DESC:CROSS REFERENCE TO RELATED APPLICATION
This Application is based on and derives the benefit of Indian Provisional Application 202321032912 filed on 9th May 2023, the contents of which are incorporated herein by reference.
TECHNICAL FIELD
[001] The embodiments herein generally relate to washing machines and more particularly to a method and a system for cleaning a tub and a rotary drum of the washing machine such as but not limited to a fully automatic top load washing machine.
BACKGROUND
[002] Generally, a washing machine is an appliance which is used for cleaning the clothes by removing the stain/ dirt from clothes by sequentially carrying out various cycles in the order of water feeding, washing, rinsing, dehydrating and draining cycles. Typically, a tub and a rotary drum of the washing machine comes in contact with water and cleaning agents such as detergents, soap water or bleach during wash cycle of the washing machine. The dirty water infused with cleaning agents has greater density compared to clean water and the same get accumulated on the tub and the rotary drum during water drain post a wash cycle. The grime eventually dries and accumulates on the surface of the tub. The residue of soap, chemicals and minerals which accumulate on the washing machine tub traps bacteria resulting in mildew and musty odor hampering the wash quality, longevity of the unit and ultimate performance of the machine. Therefore, the tub is recommended to be cleaned on a monthly basis.
[003] The conventional methods for tub cleaning include manual cleaning process using soap or cleaning agents and water or process utilizing addition of detergent in the machine, soaking process of the water in the tub and pulsator rotation for removal of impurities. The conventional processes for tub cleaning is cumbersome and time consuming. The monthly cleaning requirement of the tub is not adequately met using the conventional method.
[004] Therefore, there exists a need for a method of cleaning the tub and the rotary drum of the washing machine without using external cleaning agents, which obviates the aforementioned drawbacks.
OBJECTS
[005] The principal object of embodiments herein is to provide a method and a system for cleaning a tub and a rotary drum of the washing machine such as but not limited to a fully automatic top load washing machine.
[006] Another object of embodiments herein is to provide the method which utilizes heated water and forced water circulation to remove contaminants (scales/ moulds/ scum) along with microbes (bacteria/ allergen) accumulated on the tub and the rotary drum of the washing machine without using detergents and disinfectants.
[007] Another object of embodiments herein is to enhance the wash quality of the clothes as well as reducing bad odour and improving basic hygiene.
[008] Another object of embodiments herein is to eliminate the manual labor required for cleaning the tub and the rotary drum of the washing machine.
[009] Another object of embodiments herein is to provide an automatic cleaning system in the washing machine for cleaning the tub and the rotary drum in less time.
[0010] Another object of embodiments herein is to provide the automatic cleaning system which is reliable and inexpensive.
[0011] Another object of embodiments herein is to provide the automatic cleaning system which provides alerts/ reminders for initiating the cleaning process of the tub and the rotary drum.
[0012] Another object of embodiments herein is to indicate the cleaning status of the tub and the rotary drum of the washing machine to the user.
[0013] Another object of embodiments herein is to initiate cleaning operation of the tub and the rotary drum via internet of things (IOT).
[0014] These and other objects of embodiments herein will be better appreciated and understood when considered in conjunction with following description and accompanying drawings. It should be understood, however, that the following descriptions, while indicating embodiments and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.
BRIEF DESCRIPTION OF DRAWINGS
[0015] The embodiments are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0016] Fig. 1 depicts a schematic diagram of the system for cleaning a tub and a rotary drum of a washing machine, according to embodiments as disclosed herein;
[0017] Fig. 2 illustrates contaminants (scale/ scum) accumulated on the tub and the rotary drum of the washing machine; and
[0018] Fig. 3 depicts a flowchart indicating steps of a method for cleaning a tub and a rotary drum of a washing machine, according to embodiments as disclosed herein.

DETAILED DESCRIPTION
[0019] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0020] The embodiments herein achieve a method and a system for cleaning a tub and a rotary drum of a washing machine. Referring now to the drawings Figs 1 through 3, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.
[0021] Fig. 1 depicts a schematic view of the system (200) for cleaning the tub (12) and the rotary drum (14), according to embodiments as disclosed herein. In an embodiment the system (200) includes an input module (201), a water supply control valve (202), a controller unit (203), a heating element (204), a motor (206), drain valve (208), a water level sensor (210) and an indicating module (212). For the purpose of this description and ease of understanding, the system (200) is explained herein with below reference to cleaning the tub (12) and the rotary drum (14) of the washing machine such as but not limited to a fully automatic top load washing machine. However, it is also within the scope of the invention to use/practice the system for cleaning the tub (12) and the rotary drum (14) of any other washing machine (10) without otherwise deterring the intended function of the system (200) as can be deduced from the description and corresponding drawings.
[0022] The input module (201) is provided in communication with the controller unit (203) and is configured to send an input signal to the controller unit (203) to initiate cleaning operation of the tub (12) and the rotary drum (14). In an embodiment, the input module (201) is one of a switch or a button or a knob which is located on a control panel of the washing machine (10), wherein the input module (201) is pressed or moved or switched ON by a user to send the input signal to the controller unit (203) to initiate the cleaning operation of the tub (12) and the rotary drum (14). In another embodiment, the input module (201) is a timer which is coupled to the controller unit (203) to automatically send input signal to the controller unit (203) on a predefined time period (monthly basis/ time period based on weeks or hours or any other time period) to initiate the cleaning operation of the tub (12) and the rotary drum (14). In another embodiment, the input module (201) is a user interface device which sends input signal to the controller unit (203) to initiate cleaning operation of the tub (12) and the rotary drum (14), wherein the user interface device is one of a smartphone or a computing device which is connected to the controller unit (203) of the washing machine via internet of things (IOT). In another embodiment, the input module (201) is a remote controller or a sensor which sends input signal to the controller unit (203) to initiate cleaning operation of the tub (12) and the rotary drum (14).
[0023] The water supply control valve (202) is provided in communication with the controller unit (203) and is adapted to control the water flow to the rotary drum (14) when the water supply control valve (202) is operated by the controller unit (203). The heating element (204) is coupled to the controller unit (203) and is configured to heat the water received by the rotary drum (14) when the heating element (204) is energized via the controller unit (203). The motor (206) is provided in communication with the controller unit (203) and is rotatably coupled to a pulsator (16) (as shown in fig. 2) and the rotary drum (14). The drain valve (208) is provided in communication with the controller unit (203) and is configured to drain the water in the rotary drum (14) when the drain valve (208) is operated by the controller unit (203). The water level sensor (210) is adapted to detect water level in the rotary drum (14) and send the measured water level to the controller unit (203).
[0024] The indicating module (212) is adapted to indicate at least one of contamination level of the tub (12) and the rotary drum (14), reminders or alerts to initiate cleaning operation of the tub (12) and the rotary drum (14), and status of cleaning operation of the tub (12) and the rotary drum (14) based on the information/ signal sent by the controller unit (203) to the indicating module (212). The indicating module (212) is one of a display module, a light module, and audio module or a combination thereof, which is provided on the washing machine (10).
[0025] In an embodiment the controller unit (203) is configured to:
receive the input signal from the input module (201) to initiate cleaning operation of the tub (12) and the rotary drum (14);
operate the water supply control valve (202) to move the water supply control valve (202) to an open position in which the water supply control valve (202) allows water flow to the rotary drum (14) until the water level in the rotary drum (14) reaches a first predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
energize the heating element (204) to heat the water in the rotary drum (14) and the tub (12) to a predefined temperature;
operate the motor (206) (as shown in fig. 2) to rotate the pulsator (16) along with the rotary drum (14) for a first predefined time period such that the heated water makes forced contact with the contaminants (C) (as shown in fig. 2) accumulated on the tub (12) and the rotary drum (14) thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14); and
operate the drain valve (208) to move the drain valve (208) to an open position in which the drain valve (208) is adapted to drain the water from the rotary drum (14) thereby performing a first water draining operation.
[0026] Further, the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) to the open position in which the water supply control valve (202) allows water flow to the rotary drum (14) until the water level in the rotary drum (14) reaches a second predefined water level;
operate the motor (206) to rotate the pulsator (16) along with the rotary drum (14) to perform a first rinse cycle with the second predefined water level for a second predefined time period thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14); and
operate the drain valve (208) to move the drain valve (208) to the open position in which the drain valve (208) is adapted to drain the water from the rotary drum (14) thereby performing a second water draining operation.
[0027] Furthermore, the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) to the open position in which the water supply control valve (202) allows water flow to the rotary drum (14) until the water level in the rotary drum (14) reaches a third predefined water level;
operate the motor (206) to rotate the pulsator (16) along with the rotary drum (14) to perform a second rinse cycle with the third predefined water level for a third predefined time period thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14); and
operate the drain valve (208) to move the drain valve (208) to the open position in which the drain valve (208) is adapted to drain the water from the rotary drum (14) thereby performing a third water draining operation.
[0028] Further, in the embodiment, controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) from the open position to a closed position in which the water supply control valve (202) restricts water flow to the rotary drum (14) when the water level in the rotary drum (14) has reached the first predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
de-energize the heating element (204) when the water in the rotary drum (14) is heated to the predefined temperature;
operate the drain valve (208) to move from the open position to a closed position after the water is drained from the rotary drum (14) during the first water draining operation; and
operate the motor (206) to rotate the rotary drum (14) to perform a first spin cycle for a fourth predefined time period thereby facilitating drying of the rotary drum (14) prior to the first rinse cycle when the motor (206) is operated by the controller unit (203),
wherein
the first predefined water level is a half water level in the rotary drum (14);
the predefined temperature at which the water is heated in the rotary drum (14) is in the range of 60° C to 70° C;
the first predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 20 to 30 minutes; and
the fourth predefined time period at which the motor (206) rotates the rotary drum (14) to perform the first spin cycle is in the range of 2 to 6 minutes.
[0029] Pulsator rotation is performed in between water heating (every 10 minutes for 20 seconds) process to evenly heat the water and when the water is heated during first time, water heating duration is dependent on initial water temperature, after the water is heated, the rotary drum (14) and pulsator (16) rotation is started to remove the scales/ contaminants. The increase or decrease in the first predefined time period is based on the number of cycles (number of times washing machine is used for washing clothes) applicable for wash cycle duration.
[0030] Further, the motor (206) is configured to rotate the pulsator (16) along with the rotary drum (14) while draining the water from the rotary drum (14) during the first water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203).
[0031] Furthermore, the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) from the open position to the closed position when the water level in the rotary drum (14) has reached the second predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
operate the drain valve (208) to move the drain valve (208) from the open position to the closed position after the water is drained from the rotary drum (14) during the second water draining operation; and
operate the motor (206) to rotate the rotary drum (14) to perform a second spin cycle for a fifth predefined time period thereby facilitating drying of the rotary drum (14) prior to the second rinse cycle when the motor (206) is operated by the controller unit (203),
wherein
the second predefined water level is a full water level in the rotary drum (14);
the second predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 3 to 30 minutes; and
the fifth predefined time period at which the motor (206) rotates the rotary drum (14) to perform the second spin cycle is in the range of 2 to 6 minutes.
[0032] Furter, the increase or decrease in the second predefined time period is based on the number of cycles (number of times washing machine is used for washing clothes) applicable for rinse cycle duration. Further, the motor (206) is configured to rotate the pulsator (16) along with the rotary drum (14) while draining the water from the rotary drum (14) during the second water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203).
[0033] Furthermore, the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) from the open position to the closed position when the water level in the rotary drum (14) has reached the third predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
operate the motor (206) to maintain rotating of the pulsator (16) and the rotary drum (14) while draining the water from the rotary drum (14) during the third water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14); and
operate the drain valve (208) to move from the open position to the closed position after the water is drained from the rotary drum (14) during the third water draining operation,
wherein
the third predefined water level is a half water level in the rotary drum (14); and
the third predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 3 to 30 minutes.
[0034] The increase or decrease in the third predefined time period is based on the number of cycles (number of times washing machine is used for washing clothes) applicable for rinse cycle duration. Further, the controller unit (203) is configured to:
send one of contamination level of the tub (12) and the rotary drum (14), reminders or alerts to initiate cleaning operation of the tub (12) and the rotary drum (14), and status of cleaning operation of the tub (12) and the rotary drum (14), to one of the indicating module (212) and the input module (201); and
initiating, by the controller unit (203), the cleaning operation of the tub (12) and the rotary drum (14) if the user skips the reminders sent by the controller unit (203) and the user has failed to send instruction to the controller unit (203) to initiate the cleaning operation of the tub (12) and the rotary drum (14).
[0035] FIG. 3 depicts a flowchart showing steps of a method (100) for cleaning the tub (12) and the rotary drum (14) of the washing machine (10), according to embodiments as disclosed herein. For the purpose of this description and ease of understanding, the method (100) is explained herein with below reference to cleaning the tub (12) and the rotary drum (14) of a fully automatic top load washing machine. However, it is also within the scope of this invention to practice/implement the entire steps of the method (100) in a same manner or in a different manner or with omission of at least one step to the method (100) or with any addition of at least one step to the method (100) for cleaning the tub (12) and the rotary drum (14) of any other washing machines without otherwise deterring the intended function of the method (100) as can be deduced from the description and corresponding drawings. At step (102), the method (100) includes, sending, by an input module (201), an input signal to a controller unit (203) of the washing machine (10) to perform cleaning operation of the tub (12) and the rotary drum (14).
[0036] At step (104), the method (100) includes allowing, by a water supply control valve (202) in an open position, water flow to the rotary drum (14) until a water level in the rotary drum (14) reaches a first predefined water level when the water supply control valve (202) is operated by the controller unit (203). At step (106), the method (100) includes heating, by a heating element (204), the water in the rotary drum (14) and the tub (12) to a predefined temperature when the heating element (204) is energized via the controller unit (203).
[0037] At step (108), the method (100) includes rotating, by a motor (206), a pulsator (16) along with the rotary drum (14) for a first predefined time period such that the heated water makes forced contact with the contaminants (C) accumulated on the tub (12) and the rotary drum (14) thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203).
[0038] At step (110A), the method (100) includes draining, by a drain valve (208) in an open position, the water from the rotary drum (14) thereby performing a first water draining operation when the drain valve (208) is operated by the controller unit (203). At step (112), the method (100) includes allowing, by the water supply control valve (202) in the open position, the water flow into the rotary drum (14) until the water level in the rotary drum (14) reaches a second predefined water level when the water supply control valve (202) is operated by the controller unit (203).
[0039] At step (114), the method (100) includes rotating, by the motor (206), the pulsator (16) along with the rotary drum (14) to perform a first rinse cycle with the second predefined water level for a second predefined time period thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203). At step (116A), the method (100) includes draining, by the drain valve (208) in the open position, the water from the rotary drum (14) thereby performing a second water draining operation when the drain valve (208) is operated by the controller unit (203).
[0040] At step (118), the method (100) includes allowing, by the water supply control valve (202) in the open position, the water flow into the rotary drum (14) until the water level in the rotary drum (14) reaches a third predefined water level when the water supply control valve (202) is operated by the controller unit (203). At step (120), the method (100) includes rotating, by the motor (206), the pulsator (16) along with the rotary drum (14) to perform a second rinse cycle with the third predefined water level for a third predefined time period thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203). At step (122A), the method (100) includes draining, by the drain valve (208) in the open position, the water from the rotary drum (14) thereby performing a third water draining operation when the drain valve (208) is operated by the controller unit (203).
[0041] Further, the method (100) includes detecting, by a water level sensor (210), the water level in the rotary drum (14); and sending, by the water level sensor (210), the measured water level to the controller unit (203).
[0042] At step (107A), the method (100) includes operating, by the controller unit (203), the water supply control valve (202) to move from the open position to a closed position in which the water supply control valve (202) restricts water flow to the rotary drum (14) when the water level in the rotary drum (14) has reached the first predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203).
[0043] At step (107B), the method (100) includes de-energizing, by the controller unit (203), the heating element (204) when the water in the rotary drum (14) is heated to the predefined temperature. At step (111A), the method (100) includes operating, by the controller unit (203), the drain valve (208) to move from the open position to a closed position after the water is drained from the rotary drum (14) during the first water draining operation. At step (111B), the method (100) includes rotating, by the motor (206), the rotary drum (14) to perform a first spin cycle for a fourth predefined time period thereby facilitating drying of the rotary drum (14) prior to the first rinse cycle when the motor (206) is operated by the controller unit (203).
[0044] At step (110B), the method (100) includes maintain rotating (108B), by the motor (206), the pulsator (16) along with the rotary drum (14) while draining the water from the rotary drum (14) during the first water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14).
[0045] At step (113), the method (100) includes operating, by the controller unit (203), the water supply control valve (202) to move from the open position to the closed position when the water level in the rotary drum (14) has reached the second predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203). At step (117A), the method (100) includes operating, by the controller unit (203), the drain valve (208) to move from the open position to the closed position after the water is drained from the rotary drum (14) during the second water draining operation. At step (117B), the method (100) includes rotating (117B), by the motor (206), the rotary drum (14) to perform a second spin cycle for a fifth predefined time period thereby facilitating drying of the rotary drum (14) prior to the second rinse cycle when the motor (206) is operated by the controller unit (203).
[0046] Further, at step (116B), the method (100) includes maintain rotating (114B), by the motor (206), the pulsator (16) along with the rotary drum (14) while draining the water from the rotary drum (14) during the second water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14).
[0047] At step (119), the method (100) includes operating, by the controller unit (203), the water supply control valve (202) to move from the open position to the closed position when the water level in the rotary drum (14) has reached the third predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203).
[0048] At step (122B), the method (100) includes maintain rotating, by the motor (206), the pulsator (16) and the rotary drum (14) while draining the water from the rotary drum (14) during the third water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14). Further, at step (124), the method (100) includes operating, by the controller unit (203), the drain valve (208) to move from the open position to the closed position after the water is drained from the rotary drum (14) during the third water draining operation.
[0049] Furthermore, the method (100) includes indicating, by an indicating module (212), contamination level of the tub (12) and the rotary drum (14), reminders or alerts to initiate cleaning operation of the tub (12) and the rotary drum (14) and status of cleaning operation of the tub (12) and the rotary drum (14) based on the information/ signal sent by the controller unit (203) to the indicating module (212).
[0050] Further, the method (100) includes sending, by the controller unit (203), contamination level of the tub (12) and the rotary drum (14), reminders or alerts to initiate cleaning operation of the tub (12) and the rotary drum (14), and status of cleaning operation of the tub (12) and the rotary drum (14), to one of the indicating module (212) and the input module (201). Furthermore, the method (100) includes initiating, by the controller unit (203), the cleaning operation of the tub (12) and the rotary drum (14) if the user skips the reminders sent by the controller unit (203) and the user has failed to send instruction to the controller unit (203) to initiate the cleaning operation of the tub (12) and the rotary drum (14).
[0051] The technical advantages of system (200) implementing the steps of the method (100) for cleaning the tub (12) and the rotary drum (14) are as follows. The method (100) utilizes heated water and forced water circulation to remove contaminants (scales/ moulds/ scum) along with microbes (bacteria/ allergen) accumulated on the tub and the rotary drum of the washing machine without using detergents and disinfectants. Enhances the wash quality of the clothes as well as reducing bad odour and improving basic hygiene. Eliminates manual labor required for cleaning the tub and the rotary drum of the washing machine. The automatic cleaning system is reliable and inexpensive. The automatic cleaning system which provides alerts/ reminders for initiating the cleaning process of the tub and the rotary drum. Indicate the cleaning status of the tub and the rotary drum of the washing machine to the user. Initiates cleaning operation of the tub and the rotary drum via internet of things (IOT).
[0052] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modifications within the spirit and scope of the embodiments as described herein.
,CLAIMS:We claim,
1. A method (100) for cleaning a tub (12) and a rotary drum (14) of a washing machine (10), the method (100) comprising:
sending (102), by an input module (201), an input signal to a controller unit (203) of the washing machine (10) to perform cleaning operation of the tub (12) and the rotary drum (14);
allowing (104), by a water supply control valve (202) in an open position, water flow to the rotary drum (14) until a water level in the rotary drum (14) reaches a first predefined water level when the water supply control valve (202) is operated by the controller unit (203);
heating (106), by a heating element (204), the water in the rotary drum (14) and the tub (12) to a predefined temperature when the heating element (204) is energized via the controller unit (203);
rotating (108), by a motor (206), a pulsator (16) along with the rotary drum (14) for a first predefined time period such that the heated water makes forced contact with the contaminants (C) accumulated on the tub (12) and the rotary drum (14) thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203); and
draining (110A), by a drain valve (208) in an open position, the water from the rotary drum (14) thereby performing a first water draining operation when the drain valve (208) is operated by the controller unit (203).
2. The method (100) as claimed in claim 1, wherein the method (100) includes:
allowing (112), by the water supply control valve (202) in the open position, the water flow into the rotary drum (14) until the water level in the rotary drum (14) reaches a second predefined water level when the water supply control valve (202) is operated by the controller unit (203);
rotating (114), by the motor (206), the pulsator (16) along with the rotary drum (14) to perform a first rinse cycle with the second predefined water level for a second predefined time period thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203); and
draining (116A), by the drain valve (208) in the open position, the water from the rotary drum (14) thereby performing a second water draining operation when the drain valve (208) is operated by the controller unit (203).
3. The method (100) as claimed in claim 2, wherein the method (100) includes:
allowing (118), by the water supply control valve (202) in the open position, the water flow into the rotary drum (14) until the water level in the rotary drum (14) reaches a third predefined water level when the water supply control valve (202) is operated by the controller unit (203);
rotating (120), by the motor (206), the pulsator (16) along with the rotary drum (14) to perform a second rinse cycle with the third predefined water level for a third predefined time period thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203); and
draining (122A), by the drain valve (208) in the open position, the water from the rotary drum (14) thereby performing a third water draining operation when the drain valve (208) is operated by the controller unit (203).
4. The method (100) as claimed in claim 3, wherein the method (100) includes:
detecting, by a water level sensor (210), the water level in the rotary drum (14); and
sending, by the water level sensor (210), the measured water level to the controller unit (203).
5. The method (100) as claimed in claim 4, wherein the method (100) includes:
operating (107A), by the controller unit (203), the water supply control valve (202) to move from the open position to a closed position in which the water supply control valve (202) restricts water flow to the rotary drum (14) when the water level in the rotary drum (14) has reached the first predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
de-energizing (107B), by the controller unit (203), the heating element (204) when the water in the rotary drum (14) is heated to the predefined temperature;
operating (111A), by the controller unit (203), the drain valve (208) to move from the open position to a closed position after the water is drained from the rotary drum (14) during the first water draining operation; and
rotating (111B), by the motor (206), the rotary drum (14) to perform a first spin cycle for a fourth predefined time period thereby facilitating drying of the rotary drum (14) prior to the first rinse cycle when the motor (206) is operated by the controller unit (203),
wherein
the first predefined water level is a half water level in the rotary drum (14);
the predefined temperature at which the water is heated in the rotary drum (14) is in the range of 60° C to 70° C;
the first predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 20 to 30 minutes; and
the fourth predefined time period at which the motor (206) rotates the rotary drum (14) to perform the first spin cycle is in the range of 2 to 6 minutes.
6. The method (100) as claimed in claim 1, wherein the method (100) includes maintain rotating (110B), by the motor (206), the pulsator (16) along with the rotary drum (14) while draining the water from the rotary drum (14) during the first water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14).
7. The method (100) as claimed in claim 4, wherein the method (100) includes:
operating (113), by the controller unit (203), the water supply control valve (202) to move from the open position to the closed position when the water level in the rotary drum (14) has reached the second predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
operating (117A), by the controller unit (203), the drain valve (208) to move from the open position to the closed position after the water is drained from the rotary drum (14) during the second water draining operation; and
rotating (117B), by the motor (206), the rotary drum (14) to perform a second spin cycle for a fifth predefined time period thereby facilitating drying of the rotary drum (14) prior to the second rinse cycle when the motor (206) is operated by the controller unit (203),
wherein
the second predefined water level is a full water level in the rotary drum (14);
the second predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 3 to 30 minutes; and
the fifth predefined time period at which the motor (206) rotates the rotary drum (14) to perform the second spin cycle is in the range of 2 to 6 minutes.
8. The method (100) as claimed in claim 4, wherein the method (100) includes maintain rotating (116B), by the motor (206), the pulsator (16) along with the rotary drum (14) while draining the water from the rotary drum (14) during the second water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14).
9. The method (100) as claimed in claim 4, wherein the method (100) includes:
operating (119), by the controller unit (203), the water supply control valve (202) to move from the open position to the closed position when the water level in the rotary drum (14) has reached the third predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
maintain rotating (122B), by the motor (206), the pulsator (16) and the rotary drum (14) while draining the water from the rotary drum (14) during the third water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14); and
operating (124), by the controller unit (203), the drain valve (208) to move from the open position to the closed position after the water is drained from the rotary drum (14) during the third water draining operation,
wherein
the third predefined water level is a half water level in the rotary drum (14); and
the third predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 3 to 30 minutes.
10. The method (100) as claimed in claim 1, wherein the method (100) includes indicating, by an indicating module (212), contamination level of the tub (12) and the rotary drum (14), reminders or alerts to initiate cleaning operation of the tub (12) and the rotary drum (14) and status of cleaning operation of the tub (12) and the rotary drum (14) based on the information/ signal sent by the controller unit (203) to the indicating module (212).
11. The method (100) as claimed in claim 10, wherein the method (100) includes:
sending, by the controller unit (203), contamination level of the tub (12) and the rotary drum (14), reminders or alerts to initiate cleaning operation of the tub (12) and the rotary drum (14), and status of cleaning operation of the tub (12) and the rotary drum (14), to one of the indicating module (212) and the input module (201); and
initiating, by the controller unit (203), the cleaning operation of the tub (12) and the rotary drum (14) if the user skips the reminders sent by the controller unit (203) and the user has failed to send instruction to the controller unit (203) to initiate the cleaning operation of the tub (12) and the rotary drum (14).
12. A system (200) for cleaning a tub (12) and a rotary drum (14) of a washing machine (10), the system (200) comprising:
a controller unit (203);
a water supply control valve (202) in communication with the controller unit (203) and is adapted to control the water flow to the rotary drum (14) when the water supply control valve (202) is operated by the controller unit (203);
a water level sensor (210) adapted to detect water level in the rotary drum (14) and send the measured water level to the controller unit (203);
a heating element (204) coupled to the controller unit (203);
a motor (206) in communication with the controller unit (203) and is rotatably coupled to a pulsator (16) and the rotary drum (14); and
an input module (201) in communication with the controller unit (203) and is configured to send an input signal to the controller unit (203) to initiate cleaning operation of the tub (12) and the rotary drum (14),
wherein
the controller unit (203) is configured to:
receive the input signal from the input module (201) to initiate cleaning operation of the tub (12) and the rotary drum (14);
operate the water supply control valve (202) to move the water supply control valve (202) to an open position in which the water supply control valve (202) allows water flow to the rotary drum (14) until the water level in the rotary drum (14) reaches a first predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
energize the heating element (204) to heat the water in the rotary drum (14) and the tub (12) to a predefined temperature;
operate the motor (206) to rotate the pulsator (16) along with the rotary drum (14) for a first predefined time period such that the heated water makes forced contact with the contaminants (C) accumulated on the tub (12) and the rotary drum (14) thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14); and
operate the drain valve (208) to move the drain valve (208) to an open position in which the drain valve (208) is adapted to drain the water from the rotary drum (14) thereby performing a first water draining operation.

13. The system (200) as claimed in claim 12, wherein the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) to the open position in which the water supply control valve (202) allows water flow to the rotary drum (14) until the water level in the rotary drum (14) reaches a second predefined water level;
operate the motor (206) to rotate the pulsator (16) along with the rotary drum (14) to perform a first rinse cycle with the second predefined water level for a second predefined time period thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14); and
operate the drain valve (208) to move the drain valve (208) to the open position in which the drain valve (208) is adapted to drain the water from the rotary drum (14) thereby performing a second water draining operation.
14. The system (200) as claimed in claim 13, wherein the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) to the open position in which the water supply control valve (202) allows water flow to the rotary drum (14) until the water level in the rotary drum (14) reaches a third predefined water level;
operate the motor (206) to rotate the pulsator (16) along with the rotary drum (14) to perform a second rinse cycle with the third predefined water level for a third predefined time period thereby facilitating removal of contaminants (C) from the tub (12) and the rotary drum (14); and
operate the drain valve (208) to move the drain valve (208) to the open position in which the drain valve (208) is adapted to drain the water from the rotary drum (14) thereby performing a third water draining operation.
15. The system (200) as claimed in claim 12, wherein the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) from the open position to a closed position in which the water supply control valve (202) restricts water flow to the rotary drum (14) when the water level in the rotary drum (14) has reached the first predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
de-energize the heating element (204) when the water in the rotary drum (14) is heated to the predefined temperature;
operate the drain valve (208) to move from the open position to a closed position after the water is drained from the rotary drum (14) during the first water draining operation; and
operate the motor (206) to rotate the rotary drum (14) to perform a first spin cycle for a fourth predefined time period thereby facilitating drying of the rotary drum (14) prior to the first rinse cycle when the motor (206) is operated by the controller unit (203),
wherein
the first predefined water level is a half water level in the rotary drum (14);
the predefined temperature at which the water is heated in the rotary drum (14) is in the range of 60° C to 70° C;
the first predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 20 to 30 minutes; and
the fourth predefined time period at which the motor (206) rotates the rotary drum (14) to perform the first spin cycle is in the range of 2 to 6 minutes.
16. The system (200) as claimed in claim 12, wherein the motor (206) is configured to rotate the pulsator (16) along with the rotary drum (14) while draining the water from the rotary drum (14) during the first water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203).
17. The system (200) as claimed in claim 15, wherein the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) from the open position to the closed position when the water level in the rotary drum (14) has reached the second predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
operate the drain valve (208) to move the drain valve (208) from the open position to the closed position after the water is drained from the rotary drum (14) during the second water draining operation; and
operate the motor (206) to rotate the rotary drum (14) to perform a second spin cycle for a fifth predefined time period thereby facilitating drying of the rotary drum (14) prior to the second rinse cycle when the motor (206) is operated by the controller unit (203),
wherein
the second predefined water level is a full water level in the rotary drum (14);
the second predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 3 to 30 minutes; and
the fifth predefined time period at which the motor (206) rotates the rotary drum (14) to perform the second spin cycle is in the range of 2 to 6 minutes.
18. The system (200) as claimed in claim 15, wherein the motor (206) is configured to rotate the pulsator (16) along with the rotary drum (14) while draining the water from the rotary drum (14) during the second water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14) when the motor (206) is operated by the controller unit (203).
19. The system (200) as claimed in claim 15, wherein the controller unit (203) is configured to:
operate the water supply control valve (202) to move the water supply control valve (202) from the open position to the closed position when the water level in the rotary drum (14) has reached the third predefined water level based on the measured water level sent by the water level sensor (210) to the controller unit (203);
operate the motor (206) to maintain rotating of the pulsator (16) and the rotary drum (14) while draining the water from the rotary drum (14) during the third water draining operation thereby facilitating removal of the contaminants (C) from the tub (12) and the rotary drum (14); and
operate the drain valve (208) to move from the open position to the closed position after the water is drained from the rotary drum (14) during the third water draining operation,
wherein
the third predefined water level is a half water level in the rotary drum (14); and
the third predefined time period at which the motor (206) rotates the pulsator (16) along with the rotary drum (14) is in the range of 3 to 30 minutes.
20. The system (200) as claimed in claim 12, wherein the system (200) includes an indicating module (212) adapted to indicate at least one of contamination level of the tub (12) and the rotary drum (14), reminders or alerts to initiate cleaning operation of the tub (12) and the rotary drum (14), and status of cleaning operation of the tub (12) and the rotary drum (14) based on the information/ signal sent by the controller unit (203) to the indicating module (212),
wherein
the indicating module (212) is one of a display module, a light module, and audio module or a combination thereof, which is provided on the washing machine (10); and
the controller unit (203) is configured to:
send one of contamination level of the tub (12) and the rotary drum (14), reminders or alerts to initiate cleaning operation of the tub (12) and the rotary drum (14), and status of cleaning operation of the tub (12) and the rotary drum (14), to one of the indicating module (212) and the input module (201); and
initiating, by the controller unit (203), the cleaning operation of the tub (12) and the rotary drum (14) if the user skips the reminders sent by the controller unit (203) and the user has failed to send instruction to the controller unit (203) to initiate the cleaning operation of the tub (12) and the rotary drum (14).
21. The system (200) as claimed in claim 12, wherein the input module (201) is one of a switch or a button or a knob which is located on a control panel of the washing machine (10), wherein the input module (201) is pressed or moved or switched ON by a user to send the input signal to the controller unit (203) to initiate the cleaning operation of the tub (12) and the rotary drum (14).
22. The system (200) as claimed in claim 12, wherein the input module (201) is a timer which is coupled to the controller unit (203) to automatically send input signal to the controller unit (203) on a predefined time period to initiate the cleaning operation of the tub (12) and the rotary drum (14).
23. The system (200) as claimed in claim 20, wherein the input module (201) is a user interface device which sends input signal to the controller unit (203) to initiate cleaning operation of the tub (12) and the rotary drum (14), wherein the user interface device is one of a smartphone or a computing device which is connected to the controller unit (203) of the washing machine via internet of things (IOT).
24. The system (200) as claimed in claim 12, wherein the input module (201) is a remote controller or a sensor which sends input signal to the controller unit (203) to initiate cleaning operation of the tub (12) and the rotary drum (14).