Description:A WASHING MACHINE WITH DETACHABLE OR NON-DETACHABLE AUTOMATIC POWDER DETERGENT DISPENSER ASSEMBLY

TECHNICAL FIELD
[0001] The present disclosure relates generally to a washing machine and more particularly to a washing machine with a detachable or non-detachable automatic powder detergent dispenser assembly.

BACKGROUND
[0002] In today's fast-paced world, home appliances have become an integral part of our daily lives. These modern technological marvels have revolutionized the way we perform household tasks, making them more convenient, efficient, and time-saving. Home appliances encompass a wide range of electrical and mechanical devices designed to facilitate various tasks and functions within a household. Among these appliances, washing machine stands as a prime example of technological advancement that has significantly simplified the chore of doing laundry.
[0003] Washing machines typically consist of a drum or tub in which the laundry is placed, along with water, detergent, and other cleaning agents. The machine agitates the laundry to remove dirt and stains, and then rinses them to remove the detergent. There are different kinds of detergent namely, liquid detergent or powder detergent. Since the physical property of liquid detergent and powder detergent are different, the dispensers of the powder detergent and liquid detergent are different.
[0004] In the existing system, the detergent be it in liquid form or powder form is fed manually to the washing machine. Users typically estimate the amount of detergent to add based on rough approximations. Unfortunately, these approximations may affect the washing quality of the machines. For example, adding an insufficient amount of detergent may result in inadequate cleaning of the laundry, while adding an excessive amount can leave white residue marks on the laundry. Therefore, it is crucial to add an appropriate amount of detergent based on the quantity of the laundry and the specific washing requirements of the laundry.
[0005] Furthermore, constantly adding detergent powder for each washing cycle becomes an unnecessary and repetitive task. Due to this limitation, the washing machines might not be able to perform step washing technique.
[0006] The step washing technique involves dividing the washing process into multiple washing steps or stages, each with its own specific treatment. It is typically employed to ensure uniform mixing of detergent with water and prevent residue marks on laundry. Step washing allows for a more thorough and effective cleaning of laundry, ensuring that stubborn stains or dirt are properly addressed. It can be particularly useful for delicate or sensitive fabrics that require gentle handling while ensuring optimal cleanliness.
[0007] Accordingly, there is a need for a washing machine to have an automatic detergent powder dispenser assembly that is capable of storing the detergent powder and dispense accurate amount of the powder in the tub based on the requirement of a particular washing step/stage.

SUMMARY
[0008] This summary is provided to introduce concepts related to a washing machine with detachable or non-detachable automatic powder dispenser assembly. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0009] The present subject matter relates to a washing machine with a detachable automatic powder detergent dispenser assembly. The washing machine comprises a drum and a detachable powder detergent dispenser assembly. The detachable powder detergent dispenser assembly is provided in a cavity of the washing machine. The assembly is adapted to supply powder detergent to the drum. The assembly comprises a box assembly, a shaft, a driving unit and a microcontroller. The box assembly is adapted to accommodate a detergent storage box. The detergent storage box has a first compartment, a second compartment and an intermediate compartment integrally joining the first compartment and the second compartment. The shaft has a first spiral conveyor and a second spiral conveyor. The first spiral conveyor is positioned in the first compartment and the second spiral conveyor is positioned in the second compartment. The driving unit is operatively connected to the shaft to rotate the shaft at a fixed position. The microcontroller is operatively connected to the driving unit and the water inlet valve (904). The microcontroller is configured to rotate the shaft resulting in the first spiral conveyor and the second spiral conveyor starting to transfer the powder detergent stored in the detergent storage box towards a discharge port provided at the bottom of the intermediate compartment in the middle of the detergent storage box between the first spiral conveyor and the second spiral conveyor.
[0010] In an aspect, a plurality of load cells is provided in the cavity of the washing machine below the detachable powder detergent dispenser assembly for measuring amount of the detergent dispensed in single rotation.
[0011] In an aspect, the plurality of load cells is operatively connected to the microcontroller and configured to provide amount of the dispensed detergent in each rotation as a second input to the microcontroller.
[0012] In an aspect, the microcontroller is configured for metering of the detergent by actuating the driving unit based on a first input.
[0013] In an aspect, the first spiral conveyor and the second spiral conveyor has a plurality of spiral protrusions.
[0014] In an aspect, the plurality of spiral protrusions of the first spiral conveyor and the second spiral conveyor, respectively, is angularly tilted in the direction of the discharge port to facilitate movement of the powder detergent towards the discharge port.
[0015] In an aspect, the spiral protrusions of the first spiral conveyor and the second spiral conveyor, respectively, in the vicinity of the discharge port is smaller than the other spiral protrusions of the first spiral conveyor and the second spiral conveyor.
[0016] In an aspect, wherein at least one of the spiral protrusions of the first spiral conveyor and the second spiral conveyor, respectively, has sharp toothed profile to crush the powder detergent stored in the detergent storage box.
[0017] In an aspect, the spiral protrusions of the first spiral conveyor and the spiral protrusions of the second spiral conveyor maintains a gap on the shaft over the discharge port in the intermediate compartment.
[0018] In an aspect, a cover is provided to cover the intermediate compartment of the detergent storage box to prohibit free fall of the powder detergent.
[0019] In an aspect, the cover has a pointed dome shaped profile.
[0020] In an aspect, the sides of the cover have a curved shaped aperture to allow the smaller spiral protrusions of the first spiral conveyor and the second spiral conveyor to move freely inside the cover along with maintaining alignment with the discharge port and the greater spiral protrusions adjacent to the smaller spiral protrusions of the first spiral conveyor and the second spiral conveyor to come in contact with the curved shaped aperture of the cover after completing one full rotation.
[0021] In an aspect, provision to lock the cover over the intermediate compartment is provided on the cover.
[0022] In an aspect, the intermediate compartment of the detergent storage box has slots provided to removably attach the cover through the provisions.
[0023] In an aspect, the detergent storage box is tapered towards the bottom.
[0024] In an aspect, fillet is formed on vertical and horizontal edges of the detergent storage box to avoid detergent sticking on the box.
[0025] In an aspect, bottom of the detergent storage box is in round shape and in very precise offset to the outer diameter of the screw protrusions of the first screw conveyor and the second screw conveyor.
[0026] In an aspect, a cavity to accommodate one end of the shaft is provided in the first compartment and the second compartment, and the shaft is locked in the cavity using removable slides.
[0027] In an aspect, a chamfer is provided at the center of the intermediate compartment to ensure alignment of shaft with the bottom of the intermediate compartment.
[0028] In an aspect, a plurality of slots is provided at the ends of the first spiral conveyor and the second spiral conveyor to engage with the respective cavities of the first compartment and the second compartment.
[0029] In an aspect, base of the spiral protrusions of the first spiral conveyor and the second spiral conveyor has round projections to ensure no residue remains on the spiral protrusions of the shaft.
[0030] In an aspect, outer side of the intermediate compartment of the detergent storage box is provided with a plurality of depressions.
[0031] In an aspect, the box assembly comprises an outer box, a fitment plate and a bottom plate. The outer box is adapted to accommodate the detergent storage box. A plurality of screw casings and a plurality of stoppers are provided to maintain alignment of the detergent storage box inside the outer box. The fitment plate is provided at the base of the outer box with a discharge port aligned with the discharge port of the detergent storage box. The fitment plate has a plurality of columns provided to engage with the plurality of depressions provided on the intermediate compartment of the detergent storage box and a driving unit casing to fixedly accommodate the driving unit. The bottom plate is adapted to be fixedly attached to the fitment plate provided at the base of the outer box. The bottom plate is provided with a discharge port aligned with the discharge ports of the detergent storage box and the fitment plate.
[0032] In an aspect, one end of the shaft is provided with spur gears that are adapted to engage with the spur gears of the driving unit.
[0033] The present subject matter further relates to a method of operating washing machine with detachable automatic powder detergent dispenser assembly. The method comprises receiving, by a microcontroller, a first input from a user interface; actuating, by the microcontroller, the driving unit to dispense the powder detergent; measuring, by the plurality of load cells, amount of detergent dispensed in single rotation; transmitting, by the plurality of load cells, the measured amount of detergent dispensed as a second input to the microcontroller; de-actuating, by the microcontroller, the driving unit to stop dispensing the powder detergent.
[0034] In an aspect, the microcontroller initiates an indication of empty detergent storage box when the detergent storage box become empty.
[0035] The present subject matter further relates to a washing machine with a non-detachable automatic powder detergent dispenser assembly. The washing machine comprises a drum and a powder detergent dispenser assembly. The drum is configured to accommodate washing objects. At least one water inlet valve is coupled to the drum and configured to supply water to the drum. The powder detergent dispenser assembly is provided in a cavity of the washing machine. The assembly is adapted to supply powder detergent to the drum. The assembly comprises a detergent storage box, a shaft, a driving unit and a microcontroller. The detergent storage box is adapted to store powder detergent. The detergent storage box has a first compartment, a second compartment and an intermediate compartment integrally joining the first compartment and the second compartment. The shaft has a first spiral conveyor and a second spiral conveyor. The first spiral conveyor and is positioned in the first compartment and the second spiral conveyor is positioned in second compartment. The driving unit is operatively connected to the shaft to rotate the shaft at a fixed position. The microcontroller is operatively connected to the driving unit and the water inlet valve. The microcontroller is configured to rotate the shaft resulting in the first spiral conveyor and the second spiral conveyor starting to transfer the powder detergent stored in the storage box towards a discharge port provided at the bottom of the intermediate compartment through which the detergent is deposited on a sliding tray provided below the discharging port.
[0036] In an aspect, the powder detergent dispenser assembly is non-detachable from the cavity of the washing machine.
[0037] In an aspect, a fixed tray is attached to the bottom of the detergent storing box with bars adapted to accommodate whole weight of the sliding tray and facilitate the sliding operation.
[0038] In an aspect, a load cell is provided for measuring amount of the detergent dispensed on the sliding tray.
[0039] In an aspect, a water inlet is provided at the back end of the fixed tray and is aligned to avoid water entry in the detergent storage box.
[0040] In an aspect, the water inlet has a middle portion and two extended portions for delivering water into the fixed tray.
[0041] In an aspect, the middle portion and the two extended portions has orifices provided to deliver water into the fixed tray.
[0042] In an aspect, the sliding tray has holes provided to let the dispensed detergent powder and water solution seep into the tub.
[0043] In an aspect, the load cell is operatively connected to the microcontroller and configured to provide amount of the detergent dispensed as a third input to the microcontroller.
[0044] In an aspect, the microcontroller is configured for metering the detergent by actuating the driving unit based on a second input indicating the wash mode chosen on the washing machine.
[0045] The present subject matter further relates to a method of operating washing machine with non-detachable automatic powder detergent dispenser assembly. The method comprises receiving, by the microcontroller, a first input from a user interface confirming selection of automatic powder detergent mode; receiving, by the microcontroller, a second input from the user interface; actuating, by the microcontroller, the driving unit to dispense the powder detergent based on the second input; measuring, by the load cell, the amount of detergent dispensed in single rotation; transmitting, by the load cell, the measured amount of detergent dispensed as a third input to the microcontroller; de-actuating, by the microcontroller, the driving unit to stop dispensing the powder detergent.
[0046] In an aspect, the microcontroller initiates an indication of empty detergent storage box when the detergent storage box become empty.
[0047] In an aspect, the microcontroller is configured to turn on water inlet valve after powder is dispensed on the sliding tray.
[0048] In an aspect, the second input is chosen washing mode.
[0049] In an aspect, the first input is either an automatic powder detergent dispensing mode or a manual liquid detergent dispensing mode.
[0050] To further understand the characteristics and technical contents of the present subject matter, a description relating thereto will be made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit the scope of the present subject matter.
[0051] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF FIGURES
[0052] The illustrated embodiments of the present disclosure will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and processes that are consistent with the subject matter as claimed herein, wherein:
[0053] FIG. 1 illustrates isometric view of an exemplary washing machine that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0054] FIG. 2 illustrates isometric views of an exemplary detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0055] FIG. 3a illustrates isometric views of an exemplary detergent storage box that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0056] FIG. 3b illustrates side views of an exemplary detergent storage box that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0057] FIG. 3c illustrates sectional views of an exemplary detergent storage box that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0058] FIGs. 4a and 4b illustrates isometric views of an exemplary shaft of automatic powder detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0059] FIG. 5 illustrates isometric views of an exemplary shaft in assembled state with the detergent storage box in accordance with one of the embodiment of the present subject matter;
[0060] FIG. 6 illustrates isometric views of an exemplary cover in accordance with one of the embodiment of the present subject matter;
[0061] FIG. 7 illustrates exploded views of an exemplary detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0062] FIG. 8 illustrates front views of an exemplary detachable automatic detergent dispenser assembly in deployed state that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0063] FIG. 9 illustrates a block diagram of the detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0064] FIG. 10 illustrates a flow chart of a method of operating washing machine with detachable automatic powder detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0065] FIG. 11 illustrates isometric views of an exemplary non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0066] FIG. 12a illustrates exploded views of an exemplary non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0067] FIG. 12b illustrates isometric view of an exemplary detergent storage box that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0068] FIG. 12c illustrates isometric view of an exemplary water inlet in assembled state that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0069] FIG. 12d illustrates isometric view of an exemplary water inlet in non-assembled state that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0070] FIG. 12e illustrates isometric view of an exemplary sliding tray in non-assembled state that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0071] FIG. 12f illustrates rear view of an exemplary non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0072] FIG. 12g illustrates bottom view of an exemplary non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure;
[0073] FIG. 13 illustrates flow chart of a method of operating washing machine with non-detachable automatic powder detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure; and
[0074] FIG. 14 illustrates a block diagram of the non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure.
[0075] The figures depict embodiments of the present subject matter for the purposes of illustration only. A person skilled in the art will easily recognize from the following description that alternative embodiments of the structures and methods illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION
[0076] A few aspects of the present disclosure are explained in detail below with reference to the various figures. Example implementations are described to illustrate the disclosed subject matter, not to limit its scope, which is defined by the claims. Those of ordinary skill in the art will recognize a number of equivalent variations of the various features provided in the description that follows.
EXEMPLARY IMPLEMENTATIONS
[0077] While the present disclosure may be embodied in various forms, there are shown in the drawings, and will hereinafter be described, some exemplary and non-limiting embodiments, with the understanding that the present disclosure is to be considered an exemplification of the invention and is not intended to limit the invention to the specific embodiments illustrated. Not all of the depicted components described in this disclosure may be required, however, and some implementations may include additional, different, or fewer components from those expressly described in this disclosure. Variations in the arrangement and type of the components may be made without departing from the scope of the claims as set forth herein.
[0078] Washing machines in the existing art have manual detergent dispenser assembly in which the users have to manually add detergent powder in the dispenser assembly for each washing step/stage. Further, the existing detergent powder dispensing system does not have any provision to meter the amount of powder dispensed. Powder detergent dispensing in non-accurate quantity may damage the laundry.
[0079] In order to prevent damage to the laundry and avoid manual dispensing of the powder detergent, a washing machine is required with automatic detergent dispenser assembly which is capable of dispensing metered doses of powder detergent as per the requirement of each washing step/stage.
[0080] To solve the problems, a washing machine with automatic powder detergent dispenser assembly is required.
[0081] In order to achieve this goal of automatic powder detergent dispensing, a washing machine with automatic powder detergent dispenser assembly may be utilized. The powder detergent dispenser assembly may be a detachable automatic powder detergent dispenser assembly or a non-detachable powder detergent dispenser assembly.
[0082] FIG. 1 illustrates isometric view of an exemplary washing machine that can be utilized to implement one or more exemplary embodiments of the present disclosure. The present subject matter relates to a washing machine 100, particularly, a top loading washing machine. The laundry in a top-loading washing machine is loaded and unloaded from the top of the machine. Just below the top, a tub/drum 101 is provided where laundry is placed for washing. In this tub/drum 101, at least one water inlet valve is coupled and configured to supply water. In addition, an automatic detergent dispenser assembly 102 is provided at top of the washing machine 100 to dispense powder detergent. To accommodate the automatic detergent dispenser assembly 102, a cavity is provided at the top of the washing machine 100. The cavity is just above the tub/drum 101. The powder detergent dispensed from the automatic detergent dispenser assembly 102 is supplied directly to the tub/drum 101. The automatic detergent dispenser assembly 102 is ergonomically placed at the top of the washing machine 100 so that user doesn’t have to bent down to refill the automatic detergent dispenser assembly 102.
[0083] FIG. 2 illustrates isometric views of an exemplary detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. The detachable automatic powder detergent dispenser assembly 102 primarily comprises a box assembly 201, a shaft 202, a driving unit 203 and a microcontroller (not shown). The box assembly 201 is provided to accommodate a detergent storage box 204, the shaft 202 and the driving unit 203. The detergent storage box 204 is provided to store powder detergent. The detergent storage box 204 has a storage capacity that allows it to hold enough powder detergent for multiple washing cycles. In an aspect, the detergent storage box 204 can store at least 600 grams of powder.
[0084] The shaft 202 is placed in the detergent storage box 204 with one of its end rotatably engaged with the driving unit 203.
[0085] FIG. 3a illustrates isometric views of an exemplary detergent storage box that can be utilized to implement one or more exemplary embodiments of the present disclosure. The detergent storage box 204 is designed to accommodate powder detergent. The detergent storage box 204 has a first compartment 301, an intermediate compartment 303 and a second compartment 302. The intermediate compartment 303 integrally joins the first compartment 301 and the second compartment 302. The first compartment 301 and the second compartment 302 are identical in size and shape. A discharging port is provided at the bottom of the intermediate compartment 303. Width of the intermediate compartment 303 is lesser than the width of the first compartment 301 and the second compartment 302. This ensures convergence of the powder detergent in the detergent storage box 204 towards the discharge port present in the intermediate compartment 303. The detergent storage box 204 has a tapered shape towards the bottom, resulting in a rounded bottom for the detergent storage box 204. This tapered profile with round bottom ensures entire powder detergent in the detergent storage box 204 comes in contact with the shaft 202. Further, the detergent storage box 204 has tapered side walls and tapered edges. Thus, the width of the detergent storage box 204 at the top is more than the width of the detergent storage box 204 at the bottom. Fillets 304 are formed on the vertical and horizontal edges of the detergent storage box 204 to avoid detergent sticking on the storage box 204. A plurality of slots 306 are provided in the intermediate compartment 303 of the detergent storage box 204.
[0086] FIG. 3b illustrates side views of an exemplary detergent storage box that can be utilized to implement one or more exemplary embodiments of the present disclosure. Provisions are provided in the detergent storage box 204 to accommodate the shaft 202. In an aspect, a cavity 305 is provided in the first compartment 301 and the second compartment 302 to accommodate the shaft 202. The shaft 202 is locked in the cavity 305 using removable slides (shown in FIG. 7 (708)) that are adapted to slide in the cavity 305. The inclusion of removable slides makes it easier to clean and maintain the detergent storage box 204.
[0087] The rounded bottom of the detergent storage box 204 is in very precise offset to the outer diameter of the shaft 202 to ensure no detergent is left on the bottom surface of the detergent storage box 204.
[0088] FIG. 3c illustrates sectional views of an exemplary detergent storage box that can be utilized to implement one or more exemplary embodiments of the present disclosure. In the intermediate compartment 303, the center is chamfered and a fillet 304 is provided to ensure smooth convergence of the powder detergent towards discharge port. In addition, the chamfered center of the detergent storage box 204 ensures alignment of shaft 202 with the bottom of the detergent storage box 204.
[0089] FIG. 4a illustrates isometric views of an exemplary shaft of automatic powder detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. The shaft 202 primarily comprises a first spiral conveyor 401 and a second spiral conveyor 402. There is a gap between the first spiral conveyor 401 and the second spiral conveyor 402. In assembled condition, the gap between the first spiral conveyor 401 and the second spiral conveyor 402 is just above the discharge port present in the intermediate component 303 of the detergent storage box 204. The first spiral conveyor 401 and the second spiral conveyor 402 has a plurality of spiral protrusions 401a, 401b, 402a, 402b. The plurality of spiral protrusions 401a, 401b of the first spiral conveyor 401 and the second spiral conveyor 402 of the shaft 202 are angularly tilted in the direction of the discharge port. This ensures that the powder detergent present in the detergent storage box 204 is moved towards the discharge port present in the intermediate compartment 303 of the detergent storage box 204. The rounded bottom of the detergent storage box 204 is in offset to the outer diameter of the screw protrusions 401a, 401b, 402a, 402b of the first screw conveyor 401 and the second screw conveyor 402.
[0090] In an aspect, the size of plurality of spiral protrusions 401a, 401b of the first spiral conveyor 401 is not identical. Similarly, the size of plurality of spiral protrusions 402a, 402b of the second spiral conveyor 402 is not identical. Size of the spiral protrusion 401b of the first spiral conveyor 401 in the vicinity of the discharge port is smaller than the size of other spiral protrusions 401a of the first spiral conveyor 401. Similarly, size of the spiral protrusion 402b of the second spiral conveyor 402 in the vicinity of the discharge port is smaller than the size of other spiral protrusions 402a of the second spiral conveyor 402. The shaft 202 with the first spiral conveyor 401 and the second spiral conveyor 402 facilitate movement of the powder detergent in the first and second compartment 301, 302 of the storage detergent box 204 towards the discharge port in the intermediate compartment 303 of the detergent storage box 204.
[0091] In the preferred embodiment, the spiral protrusions 401a, 401b, 402a, 402b of the first spiral conveyor 401 and the second spiral conveyor 402 has round projections 403 to ensure no residue remains on the spiral protrusions 401a, 401b, 402a, 402b of the shaft 202.
[0092] A plurality of slots 404 is provided near the end of the first spiral conveyor 401 and the second spiral conveyor 402. These slots 404 are adapted to engage with the respective cavities 305 of the first compartment 301 and the second compartment 302 in a way to facilitate full rotational movement of the shaft 202 inside the detergent storage box 204.
[0093] FIG. 4b illustrates isometric views of an exemplary shaft of automatic powder detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. In one of the embodiments of the automatic powder detergent dispenser assembly 102, at least one of the spiral protrusions 401a, 402a, of the first spiral conveyor 401 and the second spiral conveyor 402 have sharp toothed profile to crush the powder detergent stored in the detergent storage box 204.
[0094] FIG. 5 illustrates isometric views of an exemplary shaft in assembled state with the detergent storage box in accordance with one of the embodiment of the present subject matter. In the assembled state, the shaft 202 is accommodated into the detergent storage box 204. The shaft 202 is introduced into the cavity 305 in the first compartment 301 and the second compartment 302 of the detergent storage box 204, in a way, that the first spiral conveyor 401 rests in the first compartment 301 of the detergent storage box 204 and the second spiral conveyor 402 rests in the second compartment 302 of the detergent storage box 204. The spiral protrusions 401b, 402b of the first spiral conveyor 401 and the second spiral conveyor 402 rests in the intermediate compartment 303 of the detergent storage box 204 beside the discharge port. To overcome the problem of free falling of the detergent through the discharge port, a cover 501 is provided over the intermediate compartment 303 of the detergent storage box 204. The cover 501 is discussed in detail with reference to Fig. 6 below.
[0095] FIG. 6 illustrates isometric views of an exemplary cover in accordance with one of the embodiment of the present subject matter. The cover 501 is provided over the intermediate compartment 303 of the detergent storage box 204 to prohibit free fall of the powder detergent. In the preferred embodiment, the cover 501 has a pointed dome shaped profile. Sides 601, 602 of the cover 501 has a curved shaped aperture 603 which faces the first compartment 301 and the second compartment 302. The side surfaces 601, 602 are tapered from the center to provide more strength to the structure of the cover 501. The curved shaped apertures 603 on corresponding sides 601, 602 of the cover 501 are adapted to let the smaller spiral protrusions 401b, 402b of the first spiral conveyor 401 and the second spiral conveyor 402 move freely inside the cover 501. The other greater spiral protrusions 401a, 402a of the first spiral conveyor 401 and the second spiral conveyor 402 moves freely in the first compartment 301 and the second compartment 302 outside the cover 501. The greater spiral protrusions 401a, 402a of the first spiral conveyor 401 and the second spiral conveyor 402 in the vicinity of the smaller spiral protrusions 401b, 402b of the first and the second spiral conveyors 401, 402 comes in contact with the curved shaped apertures 601, 602 of the cover 501 after completing one full rotation due to angular tilt of the spiral protrusions 401a, 402a.
[0096] To removably attach the cover 501 in the intermediate compartment 303 of the detergent storage box 204, provisions 604 are provided near a pointed dome of the cover 501. The provisions 604 are adopted to lock the cover 501 over the intermediate compartment 303. Fillets 605 are provided at the top surface of the cover 501 and at the intersection of the provisions 604 to ensure all detergent slides/flows into the first compartment 301 and the second compartment 302. For easy cleaning of the detergent storage box 204, the cover 501 can be removed. In an aspect, the provisions 604 of the cover 501 are adapted to lock with the slots 306 provided on the intermediate compartment 303 of the detergent storage box 204.
[0097] FIG. 7 illustrates exploded views of an exemplary detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. The box assembly comprises an outer box 701, a fitment plate 702 and a bottom plate 703. The outer box 701 is adapted to accommodate the detergent storage box 204. The outer box 701 has a plurality of screw casings 704 and a plurality of stoppers 705 to fixedly attach the detergent storage box 204 with the outer box 701.
[0098] The fitment plate 702 is provided as a base of the outer box 701. The fitment plate 702 has a discharge port 702a aligned with the discharge port of the detergent storage box 204. To restrict movement of the detergent storage box 204 inside the outer box 701, a plurality of columns 702b is provided on the fitment plate 702 around the discharge port 702a. Also, on the outer side of the intermediate compartment 303 a plurality of depressions 706 is provided. The plurality of columns 702b on the fitment plate 702 is adapted to engage with the plurality of depressions 706 on the intermediate compartment 303 of the detergent storage box 204. In addition, the fitment plate 702 is provided with a driving unit casing 707 to fixedly accommodate the driving unit 203.
[0099] The bottom plate 703 is adapted to fixedly attached to the fitment plate 702 provided as the base of the outer box 701. The bottom plate 703 is provided with a discharge port 703a aligned with the discharge ports 702a of the detergent storage box 204 and the fitment plate 702.
[00100] The shaft 202 is secured within the cavity 305 using detachable slides 708 that are designed to move within the cavity 305. To provide rotational movement to the shaft 202 inside the detergent storage box 204, one end of the shaft 202 is provided with spur gear 202a. The spur gear 202a of the shaft 202 is adapted to engage with the driving unit 203. The driving unit 203 is configured to drive the shaft 202 to dispense the detergent.
[00101] FIG. 8 illustrates front sectional views of an exemplary detachable automatic detergent dispenser assembly in deployed state that can be utilized to implement one or more exemplary embodiments of the present disclosure. As shown in FIG. 1, the automatic detergent dispenser assembly is placed in the cavity at the top of the washing machine. A plurality of load cells 801 is provided in the cavity of the washing machine below the detachable powder detergent dispenser assembly 102 for measuring amount of the detergent dispensed in single rotation. The plurality of load cells 801 is operatively connected to the microcontroller. The plurality of load cells 801 is configured to provide the amount of the dispensed detergent in each rotation as a second input to the microcontroller. The small protrusions 401b, 402b of the first spiral conveyor 401 and the second spiral conveyor 402 align with the discharge port in the intermediate compartment 303 of the detergent storage box 204. The greater spiral protrusions 401a, 402a adjacent to the smaller spiral protrusions 401b, 402b of the first spiral conveyor 401 and the second spiral conveyor 402 comes in contact with the curved shaped aperture 603 of the cover 501 after completing one full rotation. The small protrusions 401b, 402b of the first spiral conveyor 401 and the second spiral conveyor 402 align with the bottom of the intermediate compartment 303 of the detergent storage box 204.
[00102] FIG. 9 illustrates a block diagram of the detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. The microcontroller 903 is operatively connected to at least one water inlet valve 904, a user interface 901, a driving unit 203 and the plurality of load cells 801. The microcontroller 903 is configured to take input from the plurality of load cells 801. In an aspect, the microcontroller 903 receive the amount of detergent powder dispensed from the detachable automatic detergent dispenser assembly 102 from the plurality of load cell 801 as a second input. The microcontroller 903 is configured to take input from the user interface 901. In an aspect, the microcontroller 903 receives the type of wash from the user interface 901 as a first input. The microcontroller 903 is configured to dispense the powder detergent from the detachable automatic detergent dispenser assembly 102 and operate the water inlet valves 904 based on the first input and the second input. The microcontroller 903 is configured to control the rotation of the shaft 202 via the driving unit 203. The microcontroller 903 is configured to execute step wash program wherein the microcontroller 903 dispenses the detergent powder in several steps and control water inlet valve 904 several times during same wash cycle.
[00103] FIG. 10 illustrates a flow chart of a method of operating washing machine with detachable automatic powder detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. At step 1002, the microcontroller 903 receives first input from the user interface 901. The user interface 901 is adapted to provide the user with various washing modes. Different washing modes are provided in washing machines to cater to the diverse needs of various types of fabrics and soiling levels. Each fabric type and level of dirt requires different treatment to achieve optimal cleaning without causing damage. The microcontroller 903 controls the water inlet valves 904 and the driving unit 203 based on the requirement of the washing as per the chosen washing mode.
[00104] At step 1004, the microcontroller 903 actuates the driving unit 203 to dispense the powder detergent. The driving unit 203 starts rotating the shaft 202 in the detergent storage box 204. The first screw conveyor 401 and the second screw conveyor 402 start pushing the powder detergent in the detergent storage box 204 towards the dispensing port in the intermediate compartment. Consequently, the powder detergent start dispensing into the tub/drum.
[00105] At step 1006, the plurality of load cells 801 measures the amount of detergent dispensed in the single rotation. The plurality of load cells 801 measures the total weight of the automatic detergent dispensing device 102. Different brands of powder detergent have different density. Accordingly, the quantity of detergent dispensed is also different per rotation. Further, the moisture, humidity, steam and other environmental conditions make the powder detergent in the detergent storage box lumpy. Thus, the quantity of powder detergent dispensed per rotation may vary. Accordingly, the microcontroller 903 maintains the accuracy in the quantity of detergent powder dispensed.
[00106] At step 1008, the plurality of load cells 801 transmits the measured amount of detergent dispensed as second input to the microcontroller 903. The accuracy of the microcontroller 903 in the quantity of detergent powder dispensed is based on the received second input. For example, if there is 500 grams of detergent in the detergent storage box 204, and after one rotation of the shaft 202, 25 grams is dispensed. So, then 25 grams will be metered and along with this metered quantity the detergent left in the detergent storage box 204 will also be saved in the microcontroller 903. Accordingly, 475 grams will be left in the detergent storage box 204. In this way the detergent dispensed will also be measured and detergent left (emptiness) of the detergent storage box 204 can also be feed in the microcontroller 903 and when the detergent storage box 204 become empty indication is given by the microcontroller 903 by way of alarm.
[00107] At step 1010, the microcontroller 903 de-actuates the driving unit 203 to stop dispensing the powder detergent. The microcontroller 903 is configured to further repeat the steps 1004, 1006, 1008 and 1010 multiple times based on the received first input.
[00108] FIG. 11 illustrates isometric views of an exemplary non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. The non-detachable automatic powder detergent dispenser assembly 1100 is provided for automatically dispensing powder detergent and manually dispensing liquid detergent. The non-detachable automatic powder detergent dispenser assembly 1100 primarily comprises a detergent storage box 204, a shaft 202, a driving unit 1103 and a microcontroller. The detergent storage box 204 is provided to store detergent powder. The detergent storage box 204 further accommodates the shaft 202 and the driving unit 1103. The detergent storage box 204 has a storage capacity that allows it to hold enough powder detergent for multiple washing cycles.
[00109] The non-detachable automatic detergent dispenser assembly 1100 has similar detergent storage box 204, cover 501, shaft 202 as for automatic detachable detergent dispenser assembly 102. The microcontroller is operatively connected to the user interface, water inlets, load cell and the driving unit.
[00110] FIG. 12a illustrates exploded views of an exemplary non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. At the bottom of the detergent storage box 204, a fixed tray 1201 is assembled. The fixed tray 1201 has two holes through which sliding bars pass. The sliding bars facilitate the sliding tray to reciprocate. The sliding tray 1202 is provided just below the discharge port of the detergent storage box 204. The sliding tray 1202 is adapted to collect the dispensed powder detergent before falling into the washing machine tub/drum 101.
[00111] The bars of the fixed tray 1201 accommodate whole weight of the sliding tray 1202 and facilitate sliding movement of the sliding tray 1202. The sliding tray 1202 is provided to manually put liquid detergent. The sliding tray 1202 is supported by supporting bars 1203. These supporting bars 1203 are cantilever to a single screw which is directly connected to a load cell 1204. The detergent dispensed falls on the sliding tray 1202 which is supported by bars 1203. The load cell 1204 connected to the bars 1203 measures the weight of the detergent powder dispensed on the sliding tray 1202. In addition, the load cell 1204 is operatively connected to a microcontroller and configured to provide amount of the detergent dispensed as a second input to the microcontroller. The working between the microcontroller and the driving unit 1103 is same as discussed for detachable system.
[00112] A water inlet 1206 is provided at the back end of the fixed tray 1201. The water inlet 1206 is aligned with the fixed tray 1201 to avoid water entry into the detergent storage box 204. A driving unit casing 1205 is provided on the detergent storage box 204 to accommodate driving unit 1103. The driving unit 1103 is fixedly attached to the shaft 202. Further, rear casing 1207 is provided to completely cover the driving unit 1103.
[00113] FIG. 12b illustrates isometric view of an exemplary detergent storage box that can be utilized to implement one or more exemplary embodiments of the present disclosure. The detergent storage box 204 has a first compartment 301, a second compartment 302 and an intermediate compartment 303 integrally joining the first compartment 301 and the second compartment 302. The driving unit casing 1205 is integrally connected to the base of the second compartment 302. The driving unit casing 1205 is adapted to accommodate the driving unit 1103. The working of the microcontroller is different from the working of the microcontroller of detachable automatic detergent dispenser assembly.
[00114] FIG. 12c and 12d illustrates isometric view of an exemplary water inlet in assembled state and non-assembled state, respectively, that can be utilized to implement one or more exemplary embodiments of the present disclosure. The water inlet 1206 is fixedly attached to the back end of the fixed tray 1201. The water inlet 1206 has a middle portion 1206a and two extended portions 1206b for delivering water into the fixed tray 1201. The middle portion 1206a and the two extended portions 1206b has orifices 1206c provided to deliver the water. The water inlet 1206 is designed to deliver water along the width of the fixed tray 1201. This ensures that all the detergent powder dispensed on the sliding tray 1202 flows into the tub.
[00115] FIG. 12e illustrates isometric view of an exemplary sliding tray in non-assembled state that can be utilized to implement one or more exemplary embodiments of the present disclosure. The sliding tray 1202 has holes 1202a provided to let the dispensed detergent powder seep into the tub. The water inlet 1206 deliver water into the sliding tray 1202 to aid the dispensed detergent seep into the tub of the washing machine.
[00116] FIG. 12f illustrates rear view of an exemplary non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. The water inlet 1206 is fixedly attached at the back of the detergent storage box 204. In an aspect, the water inlet 1206 is fixedly attached at the back of the detergent storage box 204 using fastening means.
[00117] FIG. 12g illustrates bottom view of an exemplary non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. The fixed tray is fixedly attached at the bottom of the detergent storage box 204 using fastening means. The working is more apparent from FIG. 13 below.
[00118] FIG. 13 illustrates flow chart of a method of operating washing machine with non-detachable automatic powder detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. At step 1302, the microcontroller receives first input from the user interface. The first input clarifies the mode chosen over the user interface. The mode available for non-detachable detergent dispenser assembly 1100 includes an automatic powder detergent dispensing mode and a manual liquid detergent dispensing mode. In the manual liquid detergent mode, the detergent is manually poured on the sliding tray 1202 which is accessible to the user. In the automatic powder detergent dispensing mode, the microcontroller initiates the dispensing process as discussed in steps below.
[00119] At step 1304, the microcontroller receives second input from the user interface. The user interface is adapted to provide the user with various washing modes. Different washing modes are provided in washing machines to cater to the diverse needs of various types of fabrics and soiling levels. Each fabric type and level of dirt requires different treatment to achieve optimal cleaning without causing damage. The microcontroller controls the water inlet valves 1206 and the driving unit 1103 based on the requirement of the washing as per the chosen washing mode.
[00120] At step 1306, the microcontroller actuates the driving unit 1103 to dispense the powder detergent. The driving unit 1103 starts rotating the shaft 202 in the detergent storage box 204. The first screw conveyor 401 and the second screw conveyor 402 start pushing the powder detergent in the detergent storage box 204 towards the dispensing port in the intermediate compartment 303. Consequently, the powder detergent start dispensing onto the sliding tray 1202.
[00121] At step 1308, the load cell 1204 measures the amount of detergent dispensed in the single rotation. The load cell 1204 measures the total amount of powder detergent dispensed on the sliding tray 1202. Different brands of powder detergent have different density. Accordingly, the quantity of detergent dispensed is also different per rotation. Further, the moisture, humidity, steam and other environmental conditions make the powder detergent in the detergent storage box 204 lumpy. Thus, the quantity of powder detergent dispensed per rotation may vary. Accordingly, the microcontroller maintains the accuracy in the quantity of detergent powder dispensed.
[00122] At step 1310, the load cell 1204 transmits the measured amount of detergent dispensed as third input to the microcontroller. The accuracy of the microcontroller in the quantity of detergent powder dispensed is based on the received third input. In this case instead of measuring the whole weight of the detergent storage box 1101, only detergent dispensed weight is metered as here sliding tray 1202 is supported by cantilevered load cell. Load cell 1204 is configured to transmit the dispensed metered quantity to the microcontroller.
[00123] Now, emptiness of the detergent storage box 204 can be determined by multiple rotation of the shaft 202. For instance, let us assume the shaft 202 rotate for 10 rotations and dispensed quantity is less than the predetermined value of detergent dispensed during first rotation of the shaft 202. Then according to that indication will be given by the microcontroller to refill the detergent storage box 204.
[00124] At step 1312, the microcontroller de-activates the driving unit 1103 to stop dispensing the powder detergent. The microcontroller is configured to further repeat the steps 1306, 1308, 1310 and 1312 multiple times based on the received second input. After dispensing the powder detergent, the microcontroller turns on the water inlet valve 1206 present at the back end of the sliding tray 1202. The water from the water inlet valve 1206 flows through the sliding tray 1202 taking the liquid detergent or the powder detergent dispensed on the sliding tray 1202 into the tub.
[00125] FIG. 14 illustrates a block diagram of the non-detachable automatic detergent dispenser assembly that can be utilized to implement one or more exemplary embodiments of the present disclosure. The microcontroller 1403 is operatively connected to at least one water inlet valve 1206, 1402, a user interface 1401, a driving unit 1103 and the load cell 1204. The microcontroller 1403 is configured to take input from the load cell 1204. In an aspect, the microcontroller 1403 receive the amount of detergent powder dispensed from the detachable automatic detergent dispenser assembly 1100 from the load cell 1204 as a third input. The microcontroller 1403 is configured to take inputs from the user interface 1401. In an aspect, the microcontroller 1403 receives the detergent dispensing mode chosen by the user on the user interface 1401 as a first input. There are two detergent dispensing modes in this embodiment, namely, automatic powder detergent dispensing mode and manual liquid detergent dispensing mode. In an aspect, the microcontroller 1403 receives the washing mode chosen by the user on the user interface 1401 as a second input. The microcontroller 1403 is configured to dispense the powder detergent from the non-detachable automatic detergent dispenser assembly 1100 and operate the water inlet valves 1402, 1206 based on the first input, second input and the third input. The microcontroller 1403 is configured to control the rotation of the shaft 202 via the driving unit 1103. The microcontroller 1403 is configured to execute step wash program wherein the microcontroller 1403 dispenses the detergent powder in several steps and control water inlet valves 1206, 1402 several times during same wash cycle as per the requirement of step wash.
ADVANTAGES
The detachable and non-detachable powder detergent dispensing systems are capable of dispensing the powder detergent to the tub in accurate quantity to overcome the problem of inadequate washing of clothes or white marks on clothes. Further, the detachable and non-detachable powder detergent dispensing systems works fully automatically so user does not have to put detergent powder again and again for each washing cycle. Accordingly, with the help of detachable and non-detachable powder detergent dispenser assembly the washing machine can work in step washing mode.
[00126] The above description does not provide specific details of the manufacture or design of the various components. Those of skill in the art are familiar with such details, and unless departures from those techniques are set out, techniques, known, related art or later developed designs and materials should be employed. Those in the art are capable of choosing suitable manufacturing and design details.
[00127] Further, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. It will be appreciated that several of the above-disclosed and other features and functions, or alternatives thereof, may be combined into other systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may subsequently be made by those skilled in the art without departing from the scope of the present disclosure as encompassed by the following claims.
[00128] The claims, as originally presented and as they may be amended, encompass variations, alternatives, modifications, improvements, equivalents, and substantial equivalents of the embodiments and teachings disclosed herein, including those that are presently unforeseen or unappreciated, and that, for example, may arise from applicants/patentees and others.
[00129] It will be appreciated that variants of the above-disclosed and other features and functions, or alternatives thereof, may be combined into many other different systems or applications. Various presently unforeseen or unanticipated alternatives, modifications, variations, or improvements therein may be subsequently made by those skilled in the art which are also intended to be encompassed by the following claims.
, Claims:We Claim:
1. A washing machine (100) with a detachable automatic powder detergent dispenser assembly (102), the washing machine (100) comprises:
a drum (101) configured to accommodate washing objects, wherein at least one water inlet valve (904) is coupled to the drum (101) and configured to supply water to the drum (101);
a detachable powder detergent dispenser assembly (102), provided in a cavity of the washing machine (100), adapted to supply powder detergent to the drum (101), wherein the assembly (102) comprising:
a box assembly (201) adapted to accommodate a detergent storage box (204), wherein the detergent storage box (204) has a first compartment (301), a second compartment (302) and an intermediate compartment (303) integrally joining the first compartment (301) and the second compartment (302);
a shaft (202) having a first spiral conveyor (401) and a second spiral conveyor (402), wherein the first spiral conveyor (401) is positioned in the first compartment (301) and the second spiral conveyor (402) is position in second compartment (302);
a driving unit (203) operatively connected to the shaft (202) to rotate the shaft (202) at a fixed position; and
a microcontroller (903) operatively connected to the driving unit (203) and the water inlet valve (904), wherein the microcontroller (903) is configured to rotate the shaft (202) resulting in the first spiral conveyor (401) and the second spiral conveyor (402) starting to transfer the powder detergent stored in the detergent storage box (204) towards a discharge port provided at the bottom of the intermediate compartment (303) in the middle of the detergent storage box (204) between the first spiral conveyor (401) and the second spiral conveyor (402).
2. The washing machine (100) as claimed in claim 1, wherein a plurality of load cells (801) is provided in the cavity of the washing machine (100) below the detachable powder detergent dispenser assembly (102) for measuring amount of the detergent dispensed in single rotation.
3. The washing machine (100) as claimed in claim 2, wherein the plurality of load cells (801) is operatively connected to the microcontroller (903) and configured to provide amount of the dispensed detergent in each rotation as a second input to the microcontroller (903).
4. The washing machine (100) as claimed in claim 2, wherein the microcontroller (903) is configured for metering of the detergent by actuating the driving unit (203) based on a first input.
5. The washing machine (100) as claimed in claim 1, wherein the first spiral conveyor (401) and the second spiral conveyor (402) has a plurality of spiral protrusions (401a, 401b, 402a, 402b).
6. The washing machine (100) as claimed in claim 5, wherein the plurality of spiral protrusions (401a, 401b, 402a, 402b) of the first spiral conveyor (401) and the second spiral conveyor (402), respectively, is angularly tilted in the direction of the discharge port to facilitate movement of the powder detergent towards the discharge port.
7. The washing machine (100) as claimed in claim 5, wherein the spiral protrusions (401b, 402b) of the first spiral conveyor (401) and the second spiral conveyor (402), respectively, in the vicinity of the discharge port is smaller than the other spiral protrusions (401a, 402a) of the first spiral conveyor (401) and the second spiral conveyor (402).
8. The washing machine (100) as claimed in claim 1, wherein at least one of the spiral protrusions (401a, 401b, 402a, 402b) of the first spiral conveyor (401) and the second spiral conveyor (402), respectively, has sharp toothed profile to crush the powder detergent stored in the detergent storage box (204).
9. The washing machine (100) as claimed in claim 1, wherein the spiral protrusions (401a, 401b) of the first spiral conveyor (401) and the spiral protrusions (402a, 402b) of the second spiral conveyor (402) maintains a gap on the shaft (202) over the discharge port in the intermediate compartment (303).
10. The washing machine (100) as claimed in claim 1, wherein a cover (501) is provided to cover the intermediate compartment (303) of the detergent storage box (204) to prohibit free fall of the powder detergent.
11. The washing machine (100) as claimed in claim 10, wherein the cover (501) has a pointed dome shaped profile.
12. The washing machine (100) as claimed in claim 10, wherein the sides (601, 602) of the cover (501) has a curved shaped aperture (603) to allow the smaller spiral protrusions (401b, 402b) of the first spiral conveyor (401) and the second spiral conveyor (402) to move freely inside the cover (501) along with maintaining alignment with the discharge port and the greater spiral protrusions (401a, 402a) adjacent to the smaller spiral protrusions (401b, 402b) of the first spiral conveyor (401) and the second spiral conveyor (402) to come in contact with the curved shaped aperture (603) of the cover (501) after completing one full rotation.
13. The washing machine (100) as claimed in claim 10, wherein provision (604) to lock the cover (501) over the intermediate compartment (303) is provided on the cover (501).
14. The washing machine (100) as claimed in claim 1, wherein the intermediate compartment (303) of the detergent storage box (204) has slots (306) provided to removably attach the cover (501) through the provisions (604).
15. The washing machine (100) as claimed in claim 1, wherein the detergent storage box (204) is tapered towards the bottom.
16. The washing machine (100) as claimed in claim 1, wherein fillet (304) is formed on vertical and horizontal edges of the detergent storage box (204) to avoid detergent sticking on the box (204).
17. The washing machine (100) as claimed in claim 1, wherein bottom of the detergent storage box (204) is in round shape and in very precise offset to the outer diameter of the screw protrusions (401a, 401b, 402a, 402b) of the first screw conveyor (401) and the second screw conveyor (402).
18. The washing machine (100) as claimed in claim 1, wherein a cavity (305) to accommodate one end of the shaft (202) is provided in the first compartment (301) and the second compartment (302), and the shaft (202) is locked in the cavity (305) using removable slides (708).
19. The washing machine (100) as claimed in claim 1, wherein a chamfer is provided at the center of the intermediate compartment (303) to ensure alignment of shaft (202) with the bottom of the intermediate compartment (303).
20. The washing machine (100) as claimed in claim 1, wherein a plurality of slots (404) is provided at the ends of the first spiral conveyor (401) and the second spiral conveyor (402) to engage with the respective cavities (305) of the first compartment (301) and the second compartment (302).
21. The washing machine (100) as claimed in claim 1, wherein base of the spiral protrusions (401a, 401b, 402a, 402b) of the first spiral conveyor (401) and the second spiral conveyor (402) has round projections (403) to ensure no residue remains on the spiral protrusions (401a, 401b, 402a, 402b) of the shaft (202).
22. The washing machine (100) as claimed in claim 1, wherein outer side of the intermediate compartment (303) of the detergent storage box (204) is provided with a plurality of depressions (706).
23. The washing machine (100) as claimed in claim 1, wherein the box assembly (201) comprises:
an outer box (701) adapted to accommodate the detergent storage box (204), wherein a plurality of screw casings (704) and a plurality of stoppers (705) are provided to maintain alignment of the detergent storage box (204) inside the outer box (701);
a fitment plate (702) provided at the base of the outer box (701) with a discharge port (702a) aligned with the discharge port of the detergent storage box (204), wherein the fitment plate (702) has a plurality of columns (702b) provided to engage with the plurality of depressions (706) provided on the intermediate compartment (303) of the detergent storage box (204) and a driving unit casing (707) to fixedly accommodate the driving unit (203); and
a bottom plate (703) adapted to be fixedly attached to the fitment plate (702) provided at the base of the outer box (701), wherein the bottom plate (703) is provided with a discharge port aligned with the discharge ports of the detergent storage box (204) and the fitment plate (702).
24. The washing machine (100) as claimed in claim 1, wherein one end of the shaft (202) is provided with spur gears (202a) that are adapted to engage with the spur gears of the driving unit (203).
25. A method (1000) of operating washing machine with detachable automatic powder detergent dispenser assembly, the method (1000) comprises:
receiving (1002), by a microcontroller (903), a first input from a user interface (901);
actuating (1004), by the microcontroller (903), the driving unit (203) to dispense the powder detergent;
measuring (1006), by the plurality of load cells (801), amount of detergent dispensed in single rotation;
transmitting (1008), by the plurality of load cells (801), the measured amount of detergent dispensed as a second input to the microcontroller (903);
de-actuating (1010), by the microcontroller (903), the driving unit (203) to stop dispensing the powder detergent.
26. The method (1000) as claimed in claim 25, wherein the microcontroller (903) initiates an indication of empty detergent storage box (204) when the detergent storage box (204) become empty.
27. A washing machine (100) with a non-detachable automatic powder detergent dispenser assembly (1100), the washing machine (100) comprises:
a drum (101) configured to accommodate washing objects, wherein at least one water inlet valve (1402) is coupled to the drum (101) and configured to supply water to the drum (101);
a powder detergent dispenser assembly (1100), provided in a cavity of the washing machine (100), adapted to supply powder detergent to the drum (101), wherein the assembly (1100) comprising:
a detergent storage box (204) adapted to store powder detergent, wherein the detergent storage box (204) has a first compartment (301), a second compartment (302) and an intermediate compartment (303) integrally joining the first compartment (301) and the second compartment (302);
a shaft (202) having a first spiral conveyor (401) and a second spiral conveyor (402), wherein the first spiral conveyor (401) is positioned in the first compartment (301) and the second spiral conveyor (402) is position in second compartment (302);
a driving unit (1103) operatively connected to the shaft (202) to rotate the shaft (202) at a fixed position; and
a microcontroller (1403) operatively connected to the driving unit (1103) and the water inlet valve (1402), wherein the microcontroller is configured to rotate the shaft (202) resulting in the first spiral conveyor (401) and the second spiral conveyor (402) starting to transfer the powder detergent stored in the storage box (204) towards a discharge port provided at the bottom of the intermediate compartment (303) through which the detergent is deposited on a sliding tray (1202) provided below the discharging port.
28. The washing machine (100) as claimed in claim 27, wherein the powder detergent dispenser assembly (1100) is non-detachable from the cavity of the washing machine.
29. The washing machine (100) as claimed in claim 27, wherein a fixed tray (1201) is attached to the bottom of the detergent storing box (204) with bars (1203) adapted to accommodate whole weight of the sliding tray (1202) and facilitate the sliding operation.
30. The washing machine (100) as claimed in claim 27, wherein a load cell (1204) is provided for measuring amount of the detergent dispensed on the sliding tray (1202).
31. The washing machine (100) as claimed in claim 27, wherein a water inlet (1206) is provided at the back end of the fixed tray (1201) and is aligned to avoid water entry in the detergent storage box (204).
32. The washing machine (100) as claimed in claim 31, wherein the water inlet (1206) has a middle portion (1206a) and two extended portions (1206b) for delivering water into the fixed tray (1201).
33. The washing machine (100) as claimed in claim 32, wherein the middle portion (1206a) and the two extended portions (1206b) has orifices provided to deliver water into the fixed tray (1201).
34. The washing machine (100) as claimed in claim 27, wherein the sliding tray (1202) has holes (1202a) provided to let the dispensed detergent powder and water solution seep into the tub.
35. The washing machine (100) as claimed in claim 27, wherein the load cell (1204) is operatively connected to the microcontroller (1403) and configured to provide amount of the detergent dispensed as a third input to the microcontroller (1403).
36. The washing machine (100) as claimed in claim 27, wherein the microcontroller (1403) is configured for metering the detergent by actuating the driving unit (1103) based on a second input indicating the wash mode chosen on the washing machine (100).
37. A method (1300) of operating washing machine with non-detachable automatic powder detergent dispenser assembly, the method (1300) comprises:
receiving (1302), by the microcontroller (1403), a first input from a user interface (1401) confirming selection of automatic powder detergent mode;
receiving (1304), by the microcontroller (1403), a second input from the user interface (1401);
actuating (1306), by the microcontroller (1403), the driving unit (1103) to dispense the powder detergent based on the second input;
measuring (1308), by the load cell (1204), the amount of detergent dispensed in single rotation;
transmitting (1310), by the load cell (1204), the measured amount of detergent dispensed as a third input to the microcontroller (1403);
de-actuating (1312), by the microcontroller (1403), the driving unit (1103) to stop dispensing the powder detergent.
38. The method (1300) as claimed in claim 34, wherein the microcontroller (1403) initiates an indication of empty detergent storage box (204) when the detergent storage box (204) become empty.
39. The method (1300) as claimed in claim 34, wherein the microcontroller (1403) is configured to turn on water inlet valve (1206) after powder is dispensed on the sliding tray (1202).
40. The method (1300) as claimed in claim 34, wherein the second input is chosen washing mode.
41. The method (1300) as claimed in claim 34, wherein the first input is either an automatic powder detergent dispensing mode or a manual liquid detergent dispensing mode.