DESC:AN AIR PURIFYING CEILING FAN
FIELD OF THE INVENTION
[001] The present subject matter described herein, relates to the technical field of ceiling fan. The present subject matter, in particularly, relates to an air purifying ceiling fan to improve air quality of a room. The air purifying ceiling fan creates a unique air circulation pattern to enhance the air quality index of the room.
BACKGROUND OF THE INVENTION
[002] Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
[003] Air is indispensable for life on earth and contains by volume ratio, about 78% nitrogen, 21% oxygen, 1.0% argon, and 0.04% carbonic gas. Also, it contains fine dust which naturally occurs. From past decade airborne pollutants continues to increase which leads to increased number of complaints of respiratory infections, burning eyes, allergies, asthma attacks and other symptoms which are directly related to air pollution. People are constantly inhaling particles of dust, smoke, pollen, molds, acids, bacteria, carbon and the like. Because of this situation, it has become necessary in many environments, such as in hospitals, laboratories, scientific research rooms and the like, to provide purifying equipment which will remove a majority of these air borne pollutants.
[004] Nowadays air purifier has gained a lot of fame in the world. Because of the technological advancement in this field they have gain popularity. But the technology is expensive which makes it out of reach of the common people. Also, the air circulation by air purifier is restricted to a small area as the filters used in the purifier slow the speed of the clean air. In order to efficiently clean air of a specific room, a ceiling fan is used in addition to the air purifier for better circulation of air.
[005] United States Patent application US20070009363A1 discloses a ceiling fan which comprises of one and or two air purification systems for filtering Particulates and or odour's from the air. Which a plurality of point of ionization sources are positioned in the proximity of the periphery of an air flow which channel's through the fan blades directional air flow of a ceiling fan. A motorized ceiling fan mounted close to the ceiling of a room which draws dust and odours in the air from an upward location into the air purification system, and is forced through several inlet's, and is discharged back into the ceiling fan through the blades primary air flow through one or more outlets. An auxiliary ceiling fan motor that has several fan blades is preferably suspended between one and or two air purification systems that produce downstream direction from the plurality of point an ionization source within the air purification system. The particulates collected on the surface of either one and or two air purification systems are electrostatic ally charged in an opposite direction with the respect's to the ground. The secondary purified air flow that is created from the ceiling fan air purification system is recirculated throughout the room to help provide cooling in the summer from the downdraft to create wind chill, as well as during the winter from the updraft to reclaim lost heat. The purified air flow that is created from the ceiling fan air purification system will help reduce smoke, dust, pollen, and other particulates, which will uniformly freshen the rooms air quality. To help stabilize the ceiling fan from wobbling due to the down rod a counter weight design can be used to add balance to three or more fan blades on rotation, to help neutralize the wobble within the centre of gravity of the ceiling fans motor housing.
[006] United States patent US5964910A disclose a combined air filter and diffuser for attachment beneath an air discharge duct discharging blown air into a room of a building. The air filter is configured to abut and be flushly mounted to the ceiling immediately below the duct. The filter has a housing including a track disposed to receive a flat air filter element so that the filter element lies horizontally proximate the ceiling. The housing has a slidably removable closure exposing the filter element for removal, which is accomplished by sliding the filter element horizontally from the housing. The housing includes a diffuser having pivotally mounted fins disposed immediately below the filter element. The housing mounts to the ceiling by receiving fasteners through small opening formed in an upper, horizontal wall of the housing.
[007] The air flow dynamics of both the ceiling fans are not capable of circulating the purified air in every corner of the room.
[008] Therefore, there is a need to develop an air purifier ceiling fan to improve air quality of a room, in a way, that can obviate the drawbacks mentioned above.
OBJECT OF THE INVENTION
[009] The principal objective of the present subject matter is to develop an air purifying ceiling fan to improve air quality of a room.
[0010] Another object of the present subject matter is to develop an air purifying ceiling fan having a unique air circulation mechanism which enhance the quality of the air purification around the room.
[0011] Another object of the present subject matter is to develop an air purifying ceiling fan wherein ceiling fan and air purifier assembly works synergistically to circulate purified air in the room.
[0012] Another object of the present subject matter is to develop an air purifying ceiling fan which can facilitate servicing of filter without dismantling whole assembly.
[0013] Another object of the present subject matter is to develop an air purifying ceiling fan which uses venturi effect to maintain a smooth flow between ceiling fan and air purifier.
[0014] Yet another object of the present subject matter is to develop an air purifying ceiling fan which measures air quality index of the room and display the same by a visual indicator to apprise the user about the air quality.
[0015] Yet another object of the present subject matter is to develop an air purifying ceiling fan which can be controlled through a remote control or through any other handheld device.
[0016] Yet another object of the present subject matter is to develop an air purifying ceiling fan which issues an alert when air purifying filter needs to be change.
SUMMARY OF THE INVENTION
[0017] One or more drawbacks of conventional air purifying ceiling fan, and additional advantages are provided through the air purifying ceiling fan as claimed in the present disclosure. Additional features and advantages are realized through the technicalities of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered to be a part of the claimed disclosure.
[0018] The present subject matter relates to an air purifying ceiling fan to improve air quality of a room. The air purifying ceiling fan comprises a ceiling fan assembly, an adjustable canopy assembly and an air purifier assembly. The ceiling fan assembly is detachably attached to lower end of a down rod. Upper end of the down rod is detachably attached to the ceiling fan of the room through a shackle assembly. The adjustable canopy assembly has a top canopy to cover the down rod and shackle assembly and a bottom canopy to cover the down rod of the ceiling fan. The top canopy is slidably mounted over the bottom canopy to completely cover varying heights of the down rod. The air purifier assembly is detachably connected to the ceiling fan assembly. The air purifier assembly purifies the contaminated air of the room drawn from the bottom and directs the purified air towards the blades of the fan to circulate the purified air across the room.
[0019] In an aspect, the purifier assembly comprises a housing case accommodating a filter door with a filter assembly provided for purifying contaminated air, an axial fan housing provided in the housing case accommodating an axial fan propeller to draw contaminated air from the surrounding and pass it through the housing case and an air duct provided at the top end of the housing case to direct the purified air, coming after passing through the housing case, towards the fan blade for proper circulation of purified air across the room.
[0020] In an aspect, the filter assembly comprises a washable pre filter, a HEPA filter and a VOC carbon filter.
[0021] In an aspect, the filter door are removable to facilitate servicing of filter and a plurality of magnet is provided as holding and locking mechanism for ease and time saving purposes.
[0022] In an aspect, filter door is coated with anti-bacterial film to make the contaminated air drawn by the axial fan propeller bacteria free.
[0023] In an aspect, the air purifier assembly is detachable connected to the ceiling fan assembly through a mounting plate using lock nut.
[0024] In an aspect, a gap (H1) is maintained between motor bottom cover and the air duct with height of gap H1 smaller than the width of air outlet part of the air purifier assembly to create low pressure at the gap H1 and increase air suction near the filter for fast air purification.
[0025] In an aspect, a gap H2 is maintained between the axial fan propeller and the air duct for optimum air flow.
[0026] In an aspect, the height of the gap H1 is smaller than width of the gap H2 to allow air turbulence at the air outlet part to settle down, to eliminate any wobbling in ceiling fan assembly due to unbalance forces.
[0027] In an aspect, a printed circuit board assembly is provided to control the functioning of the air purifier ceiling fan which comprises an array of sensors, an AC to DC converter and a microcontroller. The array of sensors includes an air quality index measuring sensor to measure the air quality of the surrounding, an infra-red sensor to receive signal from a remote control, a Wi-Fi sensor module to receive signal from any hand held device using IoT and voice command. The AC to DC controller converts main AC power to appropriate values. The microcontroller is configured to take input from the array of sensors and provide output to a fan speed controller, a visual indicator controller and an LED driver controller. The fan speed controller is configured to regulate the fan speed and the axial fan propeller speed in accordance with the operating mode selected by the user. The visual indicator controller configured to visually indicate, on the visual indicator, the air quality index of the surrounding in accordance with the air quality determined by the air quality index measuring sensor. The LED driver controller configured to operate tuneable light arrangement with temperature (CCT) at different light intensities for assisting in visibility to carry out day to day activities.
[0028] In an aspect, the visual indicator includes multi-colour indicator provided on the air purifier ceiling fan which changes colour according to the determined air quality index.
[0029] In an aspect, the ceiling fan assembly comprises a motor assembly adapted to receive operation commands from the fan speed controller to regulate the speed of the ceiling fan in accordance with the user input received on the infra-red sensor or Wi-Fi sensor module.
[0030] In an aspect, a digital display is provided on the air purifier ceiling fan to alert the user for replacement of filter of the filter assembly.
[0031] In an aspect, the digital display raise an alert when the filter has worked for a predetermined working hours.
[0032] In an aspect, the digital display raise an alert when the air quality index of the room is not reducing below 50PM in three times the time suggested.
[0033] In order to further understand the characteristics and technical contents of the present invention, a description relating thereto has been made with reference to the accompanying drawings. However, the drawings are illustrative only but not used to limit scope of the present subject matter.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
[0034] Further objects and advantages of this invention will be more apparent from the description when read in conjunction with accompanying drawings of exemplary embodiments of invention and wherein:
[0035] Figure 1a illustrates isometric view of an air purifier ceiling fan according to one of the embodiment of the present subject matter;
[0036] Figure 1b illustrates exploded view of the air purifier ceiling fan according to one of the embodiment of the present subject matter;
[0037] Figure 2 illustrates sectional view of the air purifying ceiling fan according to one of the embodiment of the present subject matter;
[0038] Figure 3 illustrates exploded view of the purifier assembly according to one of the embodiment of the present subject matter;
[0039] Figure 4 illustrates junction at which the ceiling fan assembly is connected to the air purifier assembly, according to one of the embodiment of present subject matter;
[0040] Figure 5 illustrates tunable light and visual indicator on the air purifier ceiling fan according to one of the embodiment of the present subject matter;
[0041] Figure 6 illustrates block diagram of Printed Circuit Board Assembly of the air purifier ceiling fan according to one of the embodiment of present subject matter;
[0042] Figure 7 illustrates simulation data when both ceiling fan and air purifier of the air purifying ceiling fan are ON;
[0043] Figure 8 illustrates simulation data when ceiling fan of the proposed air purifying ceiling fan is OFF and air purifier of the proposed air purifying ceiling fan is ON;
DETAILED DESCRIPTION OF THE INVENTION
[0044] The present invention discloses an air purifying ceiling fan to improve air quality of a room.
[0045] Referring to Figure 1a and 1b illustrating isometric view and exploded view of the air purifying ceiling fan 100 according to one of the embodiment of present subject matter. The air purifying ceiling fan 100 comprises a ceiling fan assembly 101, an adjustable canopy assembly 102 and an air purifier assembly 103. The ceiling fan assembly 101 is provided to circulate purified air in the entire room. The adjustable canopy assembly 102 is provided to cover the down rod and other components such as shackle assembly, capacitors etc. The air purifier assembly 103 is provided to draw unpurified air from the room and purify it.
[0046] Referring to Figure 2 illustrating sectional view of the air purifying ceiling fan 100 according to one of the embodiment of present subject matter. The ceiling fan assembly 101 is detachably attached to lower end of a down rod 201. The upper end of the down rod 201 is detachably attached to the ceiling of the room through the shackle assembly 202. The adjustable canopy assembly 102 has a top canopy 203 and a bottom canopy 204. The top canopy 203 is slidably mounted over the bottom canopy 204 to completely cover the visible portion of the down rod 201. Height of the down rod 201 varies according to the ceiling height and user’s requirement. For example, visible down rod 201 height varies when the ceiling fan is mounted on a false ceiling. The adjustable canopy assembly 102 can be adjusted to height required to completely cover the visible portion of the down rod 201.
[0047] The air purifier assembly 103 is detachably connected to the ceiling fan assembly 101. In an aspect, the air purifier assembly 103 is detachably connected to the ceiling fan assembly 101 through a mounting plate using nuts. The air purifier assembly 103 purifies the contaminated air of the room drawn from the bottom and directs the purified air towards the blades of the fan to circulate the purified air across the room.
[0048] Referring to Figure 3 illustrating exploded view of the purifier assembly 103 according to one of the embodiment of the present subject matter. The purifier assembly 103 comprises a housing case 301, an axial fan housing 302 and an air duct 303. The housing case 301 accommodates a filter door 304 with a filter assembly 305 provided for purifying contaminated air. The filter assembly 305 comprises a washable pre filter, a HEPA filter and a VOC carbon filter. The washable pre filter removes dust, hair, threads etc. from the contaminated air. The HEPA filter removes PM 10 and PM 2.5 particles from the contaminated air. The VOC carbon filter removes volatile organic compounds odour / organic compounds. The filter door 304 is provided to facilitate servicing of filters provided in the filter assembly 305. The filter doors 304 are removable. Further, a plurality of magnets 306 are provided to control the holding and locking mechanism to save time during servicing of the filter. Furthermore, the filter door 304 is coated with anti-bacterial film to make the contaminated air drawn by an axial fan propeller bacteria free.
[0049] The axial fan housing 302 is provided in the housing case 301, which accommodates the axial fan propeller 307. The axial fan propeller 307 draws contaminated air from the surrounding and pass the contaminated air through the housing case 301.
[0050] The air duct 303 is provided at the top end of the housing case to direct the purified air towards the fan blade for proper circulation of purified air across the room.
[0051] Referring to Figure 4 illustrating junction at which the ceiling fan assembly 101 is connected to the air purifier assembly 103, according to one of the embodiment of present subject matter. The figure clearly shows the unique aerodynamic outlet design. A gap H1 is maintained between motor bottom cover 401 and the air duct 303. Air outlet part 402 of the air purifier assembly 103 is designed such that height of the gap H1 is smaller than the width of the air outlet part 402 of the air purifier assembly 103. This results in formation of venturi effect as the velocity of air at gap H1 is higher than at the air outlet part 402 of the air purifier assembly 103. This creates low pressure at gap H1 and increase air suction near filters with facilitates faster air purification of the room.
[0052] A gap H2 is maintained between the axial fan propeller 307 and the air duct 303 for optimum air flow. The height of the gap H1 is kept smaller than width of the gap H2. This facilitate air turbulence at the air outlet part 402 to settle down and eliminate any wobbling in ceiling fan assembly 101 due to unbalanced forces.
[0053] Referring to Figure 5 illustrating tunable light 501 and visual indicator 502 on the air purifier ceiling fan 100 according to one of the embodiment of the present subject matter. A tuneable light arrangement 501 is provided on the motor bottom cover 401 of the ceiling fan assembly 101. The tuneable light arrangement 501 is tunable as per end user requirements. In an aspect, the tunable light arrangement 501 with temperature at different light intensities are used, preferably white/ Red green blue (RGB) ¬ with cool or warm or mix. This tunable light is provided to assist the user with visibility in carrying out day to day activity.
[0054] Further, a visual indicator 502 is provided on the motor bottom cover 401 of the ceiling fan assembly 101 around the tuneable light arrangement 501 to indicate the air quality index of the surrounding. The visual indicator 502 includes multi-colour indicator provided on the air purifier ceiling fan 100 which changes color based on the air quality index. In an aspect, red color of indicator depicts that air quality in the room is bad and blue color depicts good air quality.
[0055] Referring to Figure 6 illustrating block diagram of Printed Circuit Board Assembly 600 of the air purifier ceiling fan 100 according to one of the embodiment of present subject matter. A printed circuit board assembly 600 is provided to control the functions of the air purifying ceiling fan 100. The printed circuit board assembly 600 comprises an array of sensors, an AC to DC converter and a microcontroller. The array of sensors includes an air quality index measuring sensor 601, an infra-red sensor 602 and a Wi-Fi sensor module 603. The air quality index measuring sensor 601 measures the quality of air in the surrounding. The infra-red sensor 602 is provided to receive signal from remote control. The Wi-Fi sensor module 603 is provided to receive signal from any hand held device using IoT and voice command.
[0056] The AC to DC converter 604 is provided to convert the DC voltage from the source into AC voltages of suitable value to drive various electronic components used in the air purifying ceiling fan 100. The microcontroller 605 is configured to take input from the array of sensors and accordingly provide output to a fan speed controller 606, a visual indicator controller 607 and an LED driver controller 608. The fan speed controller 609 is configured to regulate the speed of the fan motor 610 and the speed of the axial fan propeller 307 in accordance with the operating mode selected by the user. The ceiling fan assembly 101 comprises a motor assembly adapted to receive operation command from the fan speed controller 606 to regulate the speed of the ceiling fan in accordance with the user input received on the infra-red sensor 603 or the Wi-Fi sensor module 603.
[0057] The visual indicator controller 607 is configured to visually indicate the air quality of the room on the visual indicator 502. The visual indicator controller 607 changes the color of the visual indicator 502 as per the air quality index. In an aspect, 0~50 PM value (preferred color cyan / green), 51~100 PM value (preferred color yellow/ orange) and more than 100 PM (preferred color red/ maroon) indicates safe, moderate and harmful air, respectively.
[0058] The LED driver controller 608 is configured to operate tunable light arrangement 501 with temperature at different light intensities. User can select the color of the light as per their mood or requirement.
[0059] Apart from visual indicator 502 and tunable light arrangement 501 a digital display is also provided on the lower cover of axial fan housing 302 of the ceiling fan assembly 101. The digital display is provided to alert the user for replacement of filter of the filter assembly 305. The display also display the exact air quality index of the room. The digital display raise an alert when the filter has worked for a predetermined working hours. Also, the digital display raise an alert, to change the filter, when the air quality index of the room is not reducing below 50 PM in three times the time it usually takes. In an aspect, the digital display raises an alert, to change the filter, even when one of the condition subsist.
WORKING OF THE INVENTION
WHEN BOTH CEILING FAN AND AIR PURIFIER IS ON
[0060] Referring to Figure 7 illustrating simulation data when both ceiling fan assembly 101 and air purifier assembly 103 of the air purifying ceiling fan 100 are ON. When both air purifier assembly 103 and ceiling fan assembly 101 is ON. The axial fan propeller 307 draw contaminated air inside the purifier assembly 103. The contaminated air passed through filter door 304 of the housing case 301. The filter doors 304 kills the bacteria in the contaminated air, as an anti-bacterial coating is provided on the filter door 304. The air then passes through filter assembly 305 wherein the washable pre-filter, the HEPA filter and the VOC carbon filter clean the contaminated air and push the air out from the air duct 303. The air outlet part 402 settle down the turbulence in the air and maintain optimum air flow towards blade of the ceiling fan. The ceiling fan blades force air flow in every corner of the room.
WHEN CEILING FAN IS OFF AND AIR PURIFIER IS ON
[0061] Referring to Figure 8 illustrating simulation data when ceiling fan assembly 101 of the air purifying ceiling fan 100 is OFF and air purifier assembly 103 of the air purifying ceiling fan 100 is ON. Sometimes, for example in winters, there is no need to use fan for circulating air. In this case, user can use only air purifier assembly 103 of the air purifying ceiling fan 100. When only air purifier assembly 103 is ON, the axial fan propeller 307 draw contaminated air inside the purifier assembly 103. The contaminated air passed through filter door 304 of the housing case 301. The filter doors 304 kills the bacteria in the contaminated air, as an anti-bacterial coating is provided on the filter door 304. The air then passes through filter assembly 103 wherein the washable pre-filter, the HEPA filter and the VOC carbon filter clean the contaminated air and push the air out from the air duct 303. The air outlet part 402 settle down the turbulence in the air and maintain optimum air flow outside in the room.
[0062] The proposed air purifying ceiling fan 100 has a unique air circulation mechanism which enhance the quality of the air purification around the room. The ceiling fan and air purifier assembly works synergistically/ in tandem to circulate purified air in the room. Further, the proposed air purifying ceiling fan 100 facilitate servicing of filter without dismantling whole assembly. The proposed air purifying ceiling fan 100 uses venturi effect to maintain a smooth flow between ceiling fan and air purifier. The proposed air purifying ceiling fan measures air quality index of the room and display the same on a visual indicator to apprise the user about the air quality. The proposed air purifying ceiling fan 100 can be controlled through a remote control or through any other handheld device. The air purifying ceiling fan 100 issues an alert when air purifying filter needs to be change.
[0063] It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as “open” terms (e.g., the term “including” should be interpreted as “including but not limited to,” the term “having” should be interpreted as “having at least,” the term “includes” should be interpreted as “includes but is not limited to,” etc.). It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases “at least one” and “one or more” to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles “a” or “an” limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases “one or more” or “at least one” and indefinite articles such as “a” or “an” (e.g., “a” and/or “an” should typically be interpreted to mean “at least one” or “one or more”); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of “two recitations,” without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to “at least one of A, B, or C, etc.” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B.”
[0064] It will be further appreciated that functions or structures of a plurality of components or steps may be combined into a single component or step, or the functions or structures of one-step or component may be split among plural steps or components. The present invention contemplates all of these combinations. Unless stated otherwise, dimensions and geometries of the various structures depicted herein are not intended to be restrictive of the invention, and other dimensions or geometries are possible. In addition, while a feature of the present invention may have been described in the context of only one of the illustrated embodiments, such feature may be combined with one or more other features of other embodiments, for any given application. It will also be appreciated from the above that the fabrication of the unique structures herein and the operation thereof also constitute methods in accordance with the present invention. The present invention also encompasses intermediate and end products resulting from the practice of the methods herein. The use of “comprising” or “including” also contemplates embodiments that “consist essentially of” or “consist of” the recited feature.

CLAIMS:We Claim:
1. An air purifying ceiling fan (100) to improve air quality of a room, the air purifying ceiling fan (100) comprises:
a ceiling fan assembly (101) detachably attached to lower end of a down rod (201), wherein the upper end of the down rod (201) is detachably attached to the ceiling of the room through a shackle assembly (202);
an adjustable canopy assembly (102) having a top canopy (203) to cover the down rod (201) and shackle assembly (202) and a bottom canopy (204) to cover the down rod (201) of ceiling fan, wherein the top canopy (203) is slidably mounted over the bottom canopy (204) to completely cover visible portion of the down rod (201); and
an air purifier assembly (103) detachably connected to the ceiling fan assembly (101), wherein the air purifier assembly (103) purifies the contaminated air of the room drawn from the bottom and directs the purified air towards the blades of the fan to circulate the purified air across the room.
2. The air purifying ceiling fan (101) as claimed in claim 1, wherein the purifier assembly (103) comprises:
a housing case (301) accommodating a filter door (304) with a filter assembly (305) provided for purifying contaminated air;
an axial fan housing (302) provided in the housing case (301) accommodating an axial fan propeller (307) to draw contaminated air from the surrounding and pass it through the housing case (301); and
an air duct (303) provided at the top end of the housing case (301) to direct the purified air, coming after passing through the housing case (301), towards the fan blade for proper circulation of purified air across the room.
3. The air purifying ceiling fan (100) as claimed in claim 2, wherein the filter assembly (305) comprises a washable pre filter, a HEPA filter and a VOC carbon filter.
4. The air purifier ceiling fan (100) as claimed in claim 2, wherein the filter door (304) are removable to facilitate servicing of filter and a plurality of magnets (306) are provided as holding and locking mechanism for ease and time saving purposes.
5. The air purifier ceiling fan (100) as claimed in either of claim 2 and 4, wherein filter door (304) is coated with anti-bacterial film to make the contaminated air drawn by the axial fan propeller (307) bacteria free.
6. The air purifier ceiling fan (100) as claimed in claim 1, wherein the air purifier assembly (103) is detachable connected to the ceiling fan assembly (103) through a mounting plate using lock nut.
7. The air purifier ceiling fan (100) as claimed in claim 2, wherein a gap (H1) is maintained between motor bottom cover (401) and the air duct (303) with height of gap (H1) smaller than the width of air outlet part (402) of the air purifier assembly (103) to create low pressure at gap H1 and increase air suction near the filter for fast air purification.
8. The air purifier ceiling fan (100) as claimed in claim 2, wherein a gap (H2) is maintained between the axial fan propeller (307) and the air duct (303) for optimum air flow.
9. The air purifier ceiling fan (100) as claimed in claim 7 and 8, wherein the height of the gap (H1) is smaller than width of the gap (H2) to allow air turbulence at the air outlet part (402) to settle down to eliminate any wobbling in ceiling fan assembly (101) due to unbalanced forces.
10. The air purifier ceiling fan (100) as claimed in claim 1, wherein a printed circuit board assembly (600) is provided to control the functioning of the air purifier ceiling fan (100) which comprises:
an array of sensors including an air quality index measuring sensor (601) to measure the air quality of the surrounding, an infra-red sensor (602) to receive signal from a remote control, a Wi-Fi sensor module (603) to receive signal from any hand held device using IoT and voice command;
an AC to DC converter (604) to convert main AC power to appropriate values;
a microcontroller (605) configured to take input from the array of sensors (601, 602, 603) and provide output to:
a fan speed controller (606) configured to regulate the fan speed and the axial fan propeller speed in accordance with the operating mode selected by the user;
a visual indicator controller (608) configured to visually indicate, on the visual indicator (502), the air quality index of the surrounding in accordance with the air quality determined by the air quality index measuring sensor (601);
an LED driver controller (608) configured to operate tunable light arrangement (501) with temperature (CCT) at different light intensities for assisting in visibility to carry out day to day activities.
11. The air purifier ceiling fan (100) as claimed in claim 8, wherein the visual indicator (502) includes multi-colour indicator provided on the air purifier ceiling fan (100) which changes colour according to the determined air quality index.
12. The air purifier ceiling fan (100) as claimed in claim 1, wherein the ceiling fan assembly (101) comprises a motor assembly adapted to receive operation commands from the fan speed controller (606) to regulate the speed of the ceiling fan in accordance with the user input received on the infra-red sensor (602) or Wi-Fi sensor module (603).
13. The air purifier ceiling fan (100) as claimed in claim 1, wherein a digital display is provided on the air purifier ceiling fan (100) to alert the user for replacement of filter of the filter assembly (305).
14. The air purifier ceiling fan (100) as claimed in claim 12, wherein the digital display raise an alert when the filter has worked for a predetermined working hours.
15. The air purifier ceiling fan (100) as claimed in claim 12, wherein the digital display raise an alert when the air quality index of the room is not reducing below 50PM in three times the time suggested.