DYNAMICALLY TEMPERATURE AND SHAPE CHANGING FAN WITH NATIVE AIR PURIFICATION AND ROOM STERILIZATION

Description

FIELD OF THE DISCLOSURE

The present disclosure relates to the field of electrical and electronic appliances. More particularly, the present disclosure relates to a fan(s) or fans that has dynamic variation in air attack angles and air fluid dynamics thereof based on real time changes in environmental parameters, room parameters, and user preferences to provide suction, mixing and circulation of UV and HEPA purified air within the fan's body with enhanced volume and distribution of air throw and circulation thereof through the fan's blades with assurance of complete ventilation and exhaustive air purification.

BACKGROUND

Fans including ceiling fans, wall fans, table fans, standing fans, et cetera, are well known in the art. With advancement in technologies and aim to provide comfort and pleasant experience to customers, traditional fans underwent many advancements. For Instance, conventional fans modify volume and area of airflow thereby through various exemplary methods known in the art. For example, increasing or decreasing rotation speed thereof, changing direction of rotation thereof between clockwise and anti-clockwise direction, or changing shape and size of blades thereof along with an angle of attachment thereof to a rotor housing.

Changes in rotational speed of the fan cause change in volume of air thrown thereby. When speed of the fan increases, the air throw also gets stronger thereby covering a slightly wider area of air throw. The increased air throw also results in a louder sound produced by the fan. When the speed of the fan is decreased, the air throw gets lesser thereby reducing the area of air throw. As speed of the fan reduces, noise generated by the fan also reduces. Therefore, noise generated by the fan is directly proportional to rotational speed of the fan.

Clockwise and anti-clockwise direction of rotation of the ceiling fan modifies throw direction of the ceiling fan. If a fan is rotating in an anticlockwise direction, then it throws the air downwards. This is done during warmer temperatures to bring down the room temperatures. If the fan is rotating in clockwise direction, it pulls the heavy colder air from the room's floor up towards the ceiling. During the colder months, air inside a room is prone to become stuffy, and in such times a fan rotating clockwise allows for the air to circulate and keep the room feeling fresh.

Apart from the aforementioned factors in the regular fans, one important factor is variation in angle of the fan blades. Such a variation also affects the air throw, volume and noise generated by the fan. The optimum angle of the fan blades for most efficient air throw lies between the range of 8 degrees to 22 degrees. By modifying such an angle range, volume and throw area of the fan may also be modified.

There have been many prior arts related to change in blades' angle of the fan. For instance, one prior art pertains to changing blade angles of the fan for better cooling efficiency. Angles of different blades may be adjusted at specific points only, using a knob that is placed on the fan itself. When the knob is turned around manually, the blade angles change. Such a manual effort has to be done when the fan is not operating and by reaching up to the fan making it totally impractical and labour intensive.

Another prior art also involves a manual change in the blade angles, by multiple different joineries placed around hub of the fan. The joineries are fixed at different angles. The blades need to be manually removed from one joinery and placed on the new one if one wants to change the angle of the blade. Such an effort again needs to be done when the fan is not operational, and has to be done manually while reaching up to the fan, thereby making it practically non usable.

Another prior art discloses shape of the fan blades which is configured such that when the blades interact with the air while rotating, different noises such as white noise, red noise and so on gets generated, thereby providing a pleasant sensory experience to the user while sleeping. The noise generated is modulated by the blade shape and when the noise is modulated, focus of such a prior art is not to change air throw of the blades. Shape of such blades is modulated by changing lengths of the blade from the hub of the fan, and also angle thereof.

Another prior art involves altering the blade angles to modulate the air throw of the fan. Such an adjustment depends upon user's judgement as discussed hereinabove, which is pretty subjective. Another similar prior art discloses automation in change of blade angle being done using a cam setup driven by motors inside the fan. However, such prior arts have multiple disadvantages associated therewith. The user is unable to decide and does not have the scientific and calculative capability to real time determine which blade angles of the fan may be the most suitable for optimum air throw as per the location of the user relative to the fan, the room size, room temperature, room shape, presence and working of other fans in the vicinity, et cetera. Even in doing so, the user has to do a lot of manual labour and mental calculations mostly at the height of the fan and rely on his senses while adjusting the blade angles, which might have variable impact based on the location of the user respective to the fan once the fan is turned back on. Also, if there are multiple users in the room, it becomes difficult to arrive at a unified opinion. Also, it is evident in the prior arts that the blade angles cannot be natively adjusted while the fan is rotating. In case the blades cannot be adjusted when the fan is running, and such an adjustment needs to be done when the fan is stationary, it would be difficult for the user to decide if the angle of the fan blade set is optimal or not. Thus, multiple trial and error efforts are needed in the persisting prior arts and this may irk the user to find the blade angle to get the desired result that too manually after switching off the fan while in hot temperatures, hence defeating the purpose of the existing prior arts.

In addition, the mentioned prior arts have size of the main motor hub which is very big as it has to accommodate the complex mechanism of turning the fan's blades. Consequently, the main motor hub becomes quite big, heavy and hefty for fitting into a small room with nominal ceiling heights. Such prior arts also have blade angle changing mechanism inspired from that of helicopters, which involves a tall cylindrical hub to control the blades' angle. Such a mechanism in the fans takes up a lot of space which in turn leaves comparatively less space for the motor. As the steeper blade angles require more powerful motors, the conventional mechanisms and designs become unfeasible and impractical. Moreover, the total size and length of the fan increases by a huge margin, thereby rendering such fans useless in apartments/houses/buildings with lesser ceiling heights. In case, there is an air purifier attached below the fan, the fan height increases astronomically, thereby rendering the entire system practically useless due to safety reasons. Such prior arts also lack compatibility to operate on different motors such as BLDC motors. BLDC motors can provide a huge advantage in terms of noise reduction, efficiency, and electricity consumption/cost saving, but the arrangement of the mechanical components in the current prior arts leave no room for the BLDC motors to be accommodated in the fan's hub.

Another prior art that revolves around the present disclosure is an air filter. Such a prior art includes a fan, which could be a radial fan, a co-axial fan, or any other type of fan, with its primary function being sucking air through a filter and throwing it out through an outlet vent. By running continuously for long hours, it is able to purify the air in a room and form a bubble of cleaner air around itself. However, as the air filter and fan are two different elements in such a prior art, efficient mixing of the air being circulated downward by the fans blades and the air being passed through the purifier is not achieved, thus the size of such an air bubble is determined by the size of the fan present in the air filter instead of the entire fans' blades which have a much bigger coverage area, and the air filter's efficiency and the volume of air it is able to pass through itself every minute is restricted to its size. Such air filters fail to uniformly circulate the purified air throughout the room as they operate as an addon attachment to the fan's mechanism instead of being an integrated system utilizing the fan's existing air throw and air attack angle change to ensure purified air circulation to every nook and corner of the room. Such air filters form a bubble of purified air instead of reducing AQI uniformly throughout the room. Also, as fans are mostly used in summers and air pollution spikes are observed in winters, such air purifiers don't bring any significant temperature difference in the room temperatures during the hot and cold months of the year. This makes the entire system very ineffective during peak pollution months of winters. Recent conventional arts involve unidirectional air throw, which has a significantly smaller air throw radius when compared to common ceiling fans.

There are many conventional arts which are able to increase or decrease the temperature of the room. For example, an air conditioner, a room cooler, et cetera. However, most of these inventions are able to, at best, provide a few features and lag behind in other areas. If a room cooler is able to provide cool air during summers, it remains non-operational during the winters. If an air conditioner is able to provide cool air in the summers, and hot air in the winters, along with air purification too, it will lag behind in its energy efficiency and the size of the area of air throw.

During the winter months, most of the fans remain switched off. Some which can rotate clockwise remain operational, however they function to keep the room fresh and ventilated, rather than change the room's temperature. And during summers, it's the air throw which makes the user feel less heat through body evaporation, rather than actually bringing the temperature of the room down. The temperature of the room is not changed significantly, though the user does not feel too hot due to the constant air throw.

Therefore, there exists a need to solve the aforementioned issues.

OBJECTS OF THE PRESENT DISCLOSURE

The principal objective of the present disclosure relates to a fan which dynamically and autonomously changes its shape and blade angles while in operation based on real time 2D or 3D scanning of the room thereof feeding this data into firmware logics of the fan thereby moderating the air attack angle and air flow dynamics based on real time inputs such as environmental parameters, room parameters, user location relative to the fan and other user preferences.

Another objective of the present disclosure relates to a unibody mechanism of the fan wherein the downward push of air generated by the blades of the fan is harnessed to pass the air being circulated through HEPA, Ionizer and UV filters present inside the body of the fan thereby ensuring uniform circulation of this UV and HEPA purified ionized air in an enhanced volume multiplier manner. This uniform air mixing effect is achieved through sealed air channels connecting the air purification unibody of the fan to air outlets in the blades of the fan. This mechanism ensures that the purified air being released from air outlets in the fan's blades is constantly and uniformly mixed with the air being cut and pushed downward by these blades externally. This mechanism provides distribution of air throw and circulation thereof with assurance of complete ventilation and exhaustive air purification throughout the room to its every corner without the purified air getting restricted to an air bubble. Due to the changing angles of the blades which ensure optimized circulation of external air, maximum circulation and reach of the air mixed with purified air is also achieved.

Another objective of the present disclosure is to provide the fan with blades configured to have automatic change in angles of blades by scanning the room using inbuilt sensors and running the observed room parameters through custom air flow and fluid dynamics algorithms to ensure maximum coverage thereof even when the fan is in running state or stationary state or just powered on state.

Another objective of the present disclosure is to provide the fan which is configured to automatically adjust angles of the blades thereof as per size of room in which the fan is running.

Another objective of the present disclosure is to provide the fan which is able to change air throw of the fan without changing speed thereof.

Another objective of the present disclosure is to provide the fan which provides an air channel for suction of polluted air and circulation of clean purified air to travel from top of the fan through the blades and into the room.

Another objective of the present disclosure is to provide the fan which follows a simple mechanical approach to change the blade angles, rather than involving a complex arrangement of mechanical components, thereby enabling the fan to have BLDC motor installed in its hub, which in turn allows for it to be placed in rooms with low ceiling heights.

Another objective of the present disclosure is to provide the fan with a variety of airflows such as natural breezy air flow, calm constant air flow to the user present in the room where the fan is running.

Another objective of the present disclosure is to provide the fan that communicates with other similar fans placed in the vicinity and modify air flow thereof in synchronization with the other fans to provide the most efficient air throw throughout the room and create a multi climatic zone environments inside the room. Such a fan is able to identify whether the other fan is switched on or switched off, and its speed, and thereby able to modify its shape and features accordingly.

Another objective of the present disclosure is to provide the fan that circulates clean purified air throughout the room after treating the air with HEPA, activated charcoal filter, UV, prefilter, ionizer et cetera irrespective of whether the fan is running or stationary.

Another objective of the present disclosure is to disinfect an unoccupied room with the fan by sensing that there is nobody in the room before utilizing the inbuilt sanitization mechanisms which include UV, disinfectant micro spray across the air outlets through the blades, et cetera.

Another objective of the present disclosure is to provide a single click multi-filter cassette deployment and un-deployment of the air filtration unit without affecting or disturbing the installation of the fan.

Another objective of the present disclosure is to provide differential heating and cooling mechanisms inside the fan's body to provide hot or cold air throughout the room depending on the user's preference and the room's temperature. In the winters, the fan has a capability to achieve a temperate differential of about 5 to 6 degrees by throwing warm air and, in the summers, it is able to throw slightly cooled air, thereby bringing a change of 2 to 4 degrees in the room temperature in both the seasons. Therefore, the fan is able to change the room's temperature by a delta of 10 degrees.

SUMMARY

In this respect, before explaining at least one embodiment of the present disclosure in detail, it is to be understood that the invention is not limited to in its application to the details of processing and to the arrangements of the components set forth in the following description or illustrated in the drawings. The disclosure is capable of embodiments in addition to those described and of being practised and carried out in various ways. Also, it is to be understood that the phraseology, terminology employed herein, as well as the abstract, are for the purpose of description and should not be regarded as limiting.

The present invention relates to a smart fan system (100) and method (200) for dynamic air circulation, purification, and temperature modulation within a room. More particularly, the invention pertains to a fan (100) comprising intelligent computing capabilities, sensor-based control, and mechanical assemblies to optimize air fluid dynamics and climate conditions based on real-time environmental and user-specific parameters.

According to an embodiment, the fan (100) comprises a main hub (102A) equipped with an LED display (104), a BLDC motor, multiple sensors (130A, 130B), electrical assemblies, and a compute unit (118) mounted perpendicularly to a main shaft (102B). A plurality of detachable fan blades (106) are attached to the main hub (102A), each coupled through a detachable shaft (108) and a joinery assembly (114) configured to allow angular shifting or speed variation of the fan blades (106). The joinery assembly (114) operates based on user-defined parameters or automatically via sensor data to influence air attack and fluid dynamics.

The compute unit (118) includes a memory (118A) and a plurality of subunits (118B), including an input subunit (118B1) to receive data, an analysis subunit (118B2) to evaluate required blade dynamics, an actuating subunit (118B3) to implement the adjustments through alignment of shaft (108) with the joinery assembly (114), and an air circulation subunit (118B4) for regulating the volume, temperature, and quality of air circulated.

The main hub (102A) is optionally enclosed by a canopy (120) that includes an upper portion (122A) housing an air filtration unit (126) and a lower portion (122B) comprising a temperature modulating element. The canopy (120) communicates filtered air through channels (110) present within the fan blades (106).

The sensor assembly comprises of environmental sensor array which includes a LIDAR sensor (130A) for spatial mapping, an air quality index sensor, a temperature sensor, a thermal imaging sensor or an infrared (IR) occupancy sensor for occupancy detection, a Bluetooth sensor for detecting other fans, and a UVC light emitter (130B) that activates when no occupants are detected.

Advanced adjustment mechanisms include a cam (132) having a T-shaped body (132A) with multiple indentations (132C) connected to the shaft (108), and an electromagnetic cylindrical element (134) with a pin (136) that locks into the indentations (132C). Electromagnets (140) may further control the cam (132) orientation, enabling dynamic blade angle control. The blades (106) may also include actuators such as pneumatic, hydraulic, or electromechanical types for precision alignment.

The joinery assembly (114) may include a bevel assembly (150) with a main bevel gear (152) driven by an auxiliary motor (154), optionally supported by an epicyclic gear system. The system may also be connected via duct (182) to an external compressor unit (180) to support advanced heating or cooling modes.

The invention further encompasses a method (200) involving receiving input from sensors and users, analyzing the data in real time, dynamically adjusting blade angle or speed via the shaft (108) and joinery assembly (114), and circulating filtered, temperature-modulated air for complete ventilation. UVC sanitation and fragrance emission may also be included based on occupancy and air quality feedback

BRIEF DESCRIPTION OF THE DRAWINGS

Other objects, features, and advantages of the embodiment will be apparent from the following description when read with reference to the accompanying drawings. In the drawings, wherein like reference numerals denote corresponding parts throughout the several views:

Referring to FIG. 1A, illustrates a schematic view of a fan (100), in accordance with an illustrated embodiment of a present disclosure;

Referring to FIGS. 1B, illustrates a schematic view of the fan (100) having a detachable shaft joinery (108) linking the fan's unibody with the angle shift blade(s) (106), in accordance with the illustrated embodiment of the present disclosure;

Referring to FIGS. 1C and 1D, illustrates a schematic view of an exposed canopy (120) of the fan (100), in accordance with the illustrated embodiment of the present disclosure;

Referring to FIGS. 1E and 1F, illustrate fan's internal air flow pathways and air channels (210) leading to egress and exit of processed air through the trims (220), in accordance with the illustrated embodiment of the present disclosure;

Referring to FIG. 1G, illustrates a block representation of various subunits associated with a compute unit (118) of the fan (100), in accordance with the illustrated embodiment of the present disclosure; Referring to FIGS. 1H, illustrates a schematic view of the fan (100) having a blade angle changing exemplary mechanism using exemplary electromagnets, in accordance with another illustrated embodiment of the present disclosure;

Referring to FIG. 1I, illustrates a schematic view of the fan (100) having a blade angle changing exemplary bevel gear mechanism in combination thereof with planetary gear mechanism, in accordance with another illustrated embodiment of the present disclosure;

Referring to FIG. 1J, illustrates a schematic view of communication between multiple fans, in accordance with another illustrated embodiment of the present disclosure;

Referring to FIG. 1K, illustrates another illustrated embodiment of the present disclosure;

Referring to FIG. 2, discloses a flowchart depicting various steps of a method (200) for providing suction and circulation of UV, ionized and HEPA purified air with enhanced volume;

Referring to FIG. 3, shows a graph depicting rapid speed at which the pollutants decrease in a room where the present invention is deployed;

Referring to FIG. 4, shows CFD flow analysis of the present invention at 270 rpm (10 degrees of alignment);

Referring to FIG. 5, shows CFD flow analysis of the present invention at 270 rpm (15 degrees of alignment); and

Referring to FIG. 6, shows CFD flow analysis of the present invention at 320 rpm (15 degrees of alignment).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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.

As shown in FIG. 1A, the present disclosure discloses a fan (100) that includes a main hub (102A) perpendicularly aligned to a main shaft (102B). The hub (102A) houses a number of components including such as but not limited to electrical assemblies, multiple sensors, a BLDC motor, and a compute unit (118).

The electrical assemblies are well known in the art such as wirings and circuits. Multiple sensors include such as but not limited to a LIDAR, IR, Camera or SONAR sensor (130A), a temperature sensor, AQI sensor, a Bluetooth sensor, a thermal imaging sensor, a UVC light emitter (130B), an infrared (IR) occupancy sensor among others. The LIDAR sensor (130A) is configured to scan dimensions of the room i.e. size of the room. The LiDAR sensor (130A) is placed on the face of the hub (102A) or on the fan blades (106). Powering on the fan (100) for the first time rotates the fan (100) slowly to let the LiDAR sensor (130A) to collect the 3D data of the room, number of people in the room and their respective locations. Once the LiDAR sensor (130A) finishes task of collecting the data, the collected data is sent to subunits (118B) associated with the compute unit (118) for analysis. The compute unit (118) analyses the data for room dimensions, and based on preset algorithms for maximum efficiency, highest reach, maximum air throw and least noise production, angles of the fan blades (106) are dynamically changed without any manual input or manual labour while the fan is in motion and gains speed without any of the people present in the room having to work for it.

The temperature sensor senses temperature of the room i.e. environmental temperature if summer, winter, spring, autumn and further intraseasonal variation in the environmental temperatures. The AQI sensor senses quality of air. The Bluetooth sensor senses if there is another fan (one or multiple) in vicinity of the fan (100). The thermal imaging sensor an infrared (IR) occupancy sensor senses number of living beings in the room. The LiDAR/SONAR/Camera or IR sensors sense if there is any wall in close vicinity of the fan (100) or paired fan(s) when the fan (100) is in running state or idle state. The UVC light emitter (130B) is placed on face of the hub (102A) or on the fan blades (106). The UVC light emitter (130B) is configured to sanitise the room when there are no occupants in the room. The ingressed air within the fan is UV sterilized using a separate UV light pipe (130C) apart from the outer UVC light emitter (130B) placed in the fan's hub facing downward.

In the present disclosure, the fan (100) involves mechanisms to cause either angular shift or speed variation or both of the fan blades (106) to impact air attack and air fluid dynamics of the fan (100) on the basis of either of user input parameters or data collected from the multiple sensors or both. Consequently, the fan (100) has the BLDC motor installed in the hub (102A), which in turn allows thereto be placed in rooms with low ceiling heights. The BLDC motor is attached to the main shaft (102B) such that threaded shaft thereof points downwards and parallel to that of the main shaft (102B). There is a unique metal plate such that there are vertical protrusions facing downwards that guide air flow into the fan blades and providing assistance in angular change of the blades. Number of such protrusions depend upon the number of blades of the fan (100).

The compute unit (118) is discussed hereinafter in conjunction with associated figures.

The hub (102A) has a LED display (104) on the face thereof. The LED display (104) displays various status indicators that reflect status of the fan (100) in running and idle positions. The parameters may include such as but not limited to different power modes, current angular shift value of fan blades (106), current speed value of the fan blades (106), power at which internal components such as air purifier, temperature changing modules operate, room temperature, Air Quality Index (AQI), the filter life, connectivity status, et cetera. The information seen by the user at a turn of their head gives assurance to the user about the real time difference the fan (100) is making in daily life. The LED display does not rotate along with the fan's blades thereby giving the user a fixed display output.

The hub (102A) has multiple fan blades (106) detachably attached there around radially. Each of the fan blades (106) includes a detachable shaft (108), as shown in FIG. 1B. There is a joinery assembly (114) detachably connected to the shaft (108). The joinery assembly (114) is configured to cause angular shift of the fan blades (106) to impact air attack and air fluid dynamics of the fan (100) on the basis of either of user input parameters or data collected from the multiple sensors or both through various exemplary mechanisms as discussed in detail hereinafter with conjunction of associated figures.

The joinery assembly (114) pivot on the same axis as that of the fan blades (106). The joinery assembly (114) pivot on either of the X, Y or Z axes in positive or negative coordinates, in accordance to the output received from the algorithms to optimise user's end selection. If the fan hangs from the ceiling on Y-axis, and the fan blade (106) extends out perpendicular to that of the hub (102A) towards X-axis, the joinery assembly (114) is able to rotate in both clockwise and anticlockwise directions on the X-axis. The joinery assembly (114) pivot on one plane only. The amount of rotation executed by the fan blade (106) is decided by various subunits (118B) associated with the compute unit (118).

In an embodiment as shown in FIG. 1A and exposed view in FIG. 1C, there is a canopy (120) surrounding the main shaft (102B) of the fan (100). The canopy (120) is configured to house multi-layered air filtration unit (126) along with a UVC light pipe (130C) and a temperature modulating element (128). The filter cassette would have multiple layers of filters on it such as HEPA, Carbon Filter, and so on. In an embodiment, the air filtration unit (126) may be an inbuilt filter cartridge consisting of filtration layers such as prefilter, HEPA filter, activated carbon filter et cetera through which the impure polluted air passes, gets filtered, and exits through the fan's blades. The sucked in polluted air is also subjected to an ionizer and UV sterilization inside the hub (102A) through a UVC light pipe, which is separate from a UV source being available outside the fan (100) for the room sanitisation, if there is nobody detected to be present in the room. This purified and sanitised air gets circulated throughout the room. The filtration cartridge is made of two cylindrical halves which snap onto each other, this allows for an easy and convenient replacement of the filter when it reaches the end of its life cycle, without the need to disassemble the fan. A simple pull to unsnap mechanism ensures a quick and easy filter replacement without any manual labour or extensive disassembly of the fan's canopy.

The canopy (120) is aligned such that the canopy (120) has two portions—an upper portion (122A) and lower portion (122B). The upper portion (122A) encases the air filtration unit (126) while the lower portion (122B) encases the temperature modulating element (128). The temperature modulating element (128) includes such as but not limited to heating coil, heat discs, heating ring, Peltier plate, and/or combinations thereof, and so on. Temperature sensors and Thermal imaging sensor of the temperature modulating element (128) collect data such as the room temperature, environment temperature, number of occupants in the room, and sends thereto to the compute unit (118) in real time. Depending upon the pre-set user preferences or by learning the user behaviour via implementing AI/ML, the compute unit (118) sends out signals to the heating and cooling mechanisms present inside the main hub (102A). When the temperature of the room is warm, and the user wants to lower it down, the user can switch on the cooling by inputting the commands via a remote control to the fan (100). The temperature modulating element (128) gets activated. Such a cooling mechanism is placed in the path which the air takes from the fan's air purification inlets and out from the exit trims or outlets present on the fan's blades. When the air comes into contact with the surface of the temperature modulating element (128), its temperature gets reduced. This cooler air gets circulated out into the room and results in a temperature drop of a few degrees Celsius. Similarly, if the room temperature is cold such as in winters, and the user wants a warmer temperature, they can change so by commanding the fan (100) via remote control. The compute unit (118) receives the signal from an electronic device and activates the temperature modulating element (128). In case of exemplary Peltier coil, a reverse current passes there through and thereby creating a hot surface for the air to flow over. In case of a heating coil or any such heating mechanism, the current given is modulated such that the air getting circulated out doesn't get too warm. The air enters from the air purification inlets, flows over the heating element surface, and exits through the outlets on the fan's exit outlets or trims. The air escapes into the room thereby making it slightly warmer and more comfortable for the user, all the while giving out purified clean air for breathing.

The upper portion (122A) has multiple openings (124) in the form of either slits or perforations through which surrounding air enters or egresses and gets processed through the air filtration unit (126) for filtration. The lower portion (122B) includes multiple temperature modulating elements (128) affixed on walls thereof. The temperature modulating element (128) warms up or cools the filtered air depending upon the environmental temperature and the user selected parameters defined hereinafter. The temperature modulating elements (128), for example Peltier plates are hexagonal or similar structural in shape so as to provide maximum surface area for contact for the purified air that exits from the air filtration unit (126) and move towards the lower portion (122B). The hexagonal or similar shape such as triangular, square, and so on as aforementioned allows for the least number of Peltier plates to be used to provide the maximum surface area in the given volumetric space, thereby reducing cost, weight, and maintenance of overall fan (100) and associated components and units.

In the embodiment, the canopy (120) has a distinct one-touch coupling and decoupling mechanism to ensure easy maintenance at any given time. The canopy (120) may be opened and closed back using a simple one-click mechanism. In such a mechanism, the user holds the upper portion (122A) of the canopy (120) firmly and pull thereto out. The user now is able to access the air filtration unit (126). The user is able to replace the old air filtration unit (126) by new one followed by snapping back the upper portion (122A) of the canopy (120) in place. Similarly, the user accesses the lower portion (122B) through the one-click mechanism to keep a check on the temperature modulating element (128).

In an embodiment as shown in FIG. 1D, the fan blades (106) include a channel (110) for continuous circulation of air from the canopy (120) to egress the filtered air of required temperature through the fan blades (106). The fan blades (106) further have openings therein underneath the channel (110) to egress the processed air. As shown in embodiments in FIG. 1E, each of the fan blades (106) includes respective trims (112) that may include multiple indentations/openings in the form of either slits or perforations or any type of opening to egress the filtered warm or cold air after processing through the air filtration unit (126) and the temperature modulating unit (128). The egressed air has been purified, heated or cooled by flowing through the fan's unibody, and exits the fan's enclosure through the trims (220) through the fan (100) present on each of the fan's blades (106).

In some embodiments, the fan blades (106) or the trim (112) may have a removable storage unit in the form of a capsule containing a liquid convertible into mist. Such a liquid may be sanitizing liquid or a perfume. In some embodiment, the capsule may be divided into two compartments, out of which one compartment may store the sanitizing liquid while another compartment may store the perfume. In some embodiments, the capsule may contain only the sanitizing liquid. The capsule may have perforations through which the sanitizing liquid and/or the perfume may be sprayed in the form of mist once the thermal imaging sensor an infrared (IR) occupancy sensor senses absence of the living beings in the room. Such a mist sanitizes the room along with the UVC light emitter (130B), ensuring a clean and hygiene environment for the users. Such a capsule is replaceable and detachable.

In some embodiments, the capsule may only contain the perfume, which may be released in the form of mist spreading miniscule amounts of fragrance in the requirement as per user's preference or automatically depending upon the data collected by the AQI sensor, thereby keeping the environment smelling fresh and welcoming. Such a capsule is replaceable and detachable.

As shown in FIG. 1F, the air first ingresses through the openings (124) of the upper portion (120A) and flows through the air filtration unit (126), then flows over the temperature modulating elements (128) to be processed by being heated or cooled depending upon the feedback received from the compute unit (118) with regard to environmental temperature and user input parameters. The processed air i.e. filtered and warm or cool air then egresses through either the channel (110) and the corresponding openings just beneath the channel (110) in the fan blades (106) or the openings in the trims (112) in the fan blades (106). Simultaneously, the joinery assembly (114) causes either angular shift or speed variation or both of the fan blades (106) to impact air attack and air fluid dynamics of the fan (100) on the basis of either of user input parameters or data collected from the multiple sensors or both through exemplary mechanisms as discussed in detail hereinafter.

In some embodiments, the fan (100) also has a Bluetooth Low Energy (BLE) module which makes thereto a smart IoT device and lets thereto communicate with similar fans and electronics in its vicinity. By communicating with other fans, a local mesh network is created which makes the fans work in synchronization to provide the best possible air throw and multi-climate zones throughout the room as per the user's preferences. Thus, this mesh network communication between multiple fans in the same room also allows for a regional climate control in the room as shown in FIG. 1J. In one of the embodiments, the fans in the connected network can operate smartly to modulate each other's speed and blade angles in such a way that one may provide more or less air throw than that of the other based on the inputs from the air pressure sensors to ensure that the rooms' multi climate zones are maintained as per the users' preferences. The fan (100) also has features such as modulating the airflows to mimic natural breeze or silent calm air flow or any such predefined air flow patterns.

The compute unit (118) is a microcontroller that is placed inside the hub (102A). The compute unit (118) has a memory (118A) associated therewith. The memory (118A) is a temporary repository of record of parameters as dimensioned by the multiple sensors first time of running of the fan (100) and after every event of air circulation in a time series manner. The memory (118A) is also a permanent repository of the user input parameters that are being selected by the user for every event of air circulation. The compute unit (118) accompanied with a plurality of subunits (118B), as shown in FIG. 1G. The subunits include such as but not limited to an input subunit (118B1), an analysis subunit (118B2), an actuating subunit (118B3), an air processing subunit (118B4), an air circulation subunit (118B5), and so on.

The input subunit (118B1) is configured to receive input from either the multiple sensors or the user input parameters or both. Multiple sensors have already defined hereinabove. The user input parameters include either a particular value or a particular range of room temperature, and either a particular value or a particular range of fan speed.

The analysis subunit (118B2) is configured to analyse the received input to determine either angular shift or amount of speed to vary or both of the fan blades (106), thereby impacting air attack and air fluid dynamics of the fan (100) to meet required efficiency of the fan (100). This effectively modulates power to deliver the required temperature variation for the room, to impact air attack and air fluid dynamics of the fan (100) as per either user input preferences or data collected from the multiple sensors or both, along with managing noise output. The angular shift and the speed of the fan are both determined by the analysis subunit in such a way, that by pre-fed algorithms, the fan is intelligent enough to know that in a room of this particular size, if the fan rotates at a particular speed with the blades at a particular angle, the amount of air displacing every second is a throw area, and a particular temperature difference may be brought upon in the room. And by the sensors on the fan, the analysis subunit (118B2) determines the size of the room, where the inhabitants of the room are sitting, and other data required to make an informed decision.

The actuating subunit (118B3) is configured to actuate alignment of the shaft (108) with respect to the joinery assembly (114) in such a way to cause either angular shift or speed variation or both of the fan blades (106) to impact air attack of the fan (100) and air fluid dynamics dynamically to meet the required efficiency.

The air circulation subunit (118B5) is configured for circulating volume of air of required temperature and air quality index as per the analysis by the analysis subunit (118B2).

Hence, the fan (100) is configured to gather real time data from multiple sensors including such as but not limited to dimensions of the room, room temperature, presence and working of another fan in the room, presence and relative positioning of people, placement of fan relative to the closest mounting surface behind the fan, nearest wall, et cetera. The compute unit (118) gathers the data using a LiDAR (130A) or similar single or multi-planar sensors known in the art. Once the fan is powered on, the fan rotates slowly for the first complete rotation, thereby enabling the sensors to collect the three-dimensional data of the room. Once the LiDAR and similar sensor (3) finishes collecting the data, the collected data is sent in real time to the analysis subunit (118B2) of the compute unit (118) for analysis. The received data is processed on a real-time basis on the fan's computational module or through remote cloud. The data is sent to backend servers or user's mobile device over 4G, 5G, Wifi, Bluetooth et cetera. The compute unit (118) analyses the data for room dimensions, and based on a combination of preset algorithms for maximum efficiency, maximum air throw, optimised air purification, optimal or user preferable room temperature, air production, user's selected preferences along with generation of least noise, the angles of the fan blades and the speed of air flow during purification process are set. Since the fan (100) is an IoT (Internet of Things) product, it has the ability to connect to the internet. In that case, it can process the gathered data on cloud rather than having an on-board computer unit to process the data.

Change in angles of the fan blades may be done autonomously and automatically both when the fan is powered on and running, or powered on and stationary. There are various actuating mechanisms to adjust the angles of the fan blades. The mechanism may include such as but not limited to electromagnetic, hydraulic, pneumatic, epicyclic, propellor based or electric actuator based. The fan (100) includes an actuator including such as but not limited to air-based pneumatic actuator, oil-based hydraulic, an electromechanical actuator connected to the detachable shaft (108).

In one embodiment of the electromagnetic mechanism shown in FIG. 1H, the fan blade (106) includes a cam (132) connected to the detachable shaft (108). The cam (132) includes a T-shaped body (132A) having multiple indentations (132C) on arm (132B) thereof. There is an electromagnetic cylindrical element (134) having a pin (136) protruding outwardly therefrom such that to lock the indentation (132C) as the cam (132) rotates clockwise or anti-clockwise. Each electromagnet or a pair of electromagnets (138) is placed at either side of the cam (132) to attract or repel thereto towards or away from each other respectively to cause change in the angle of the fan blades (106). The fan blades (106) are connected to the cam (132) via a connector (138). The connector (138) has a slit on one face for the fan blade (106) to insert. On the opposite face, shaft of the cam (132) is inserted into the connector (138). The cam (132) is made up of a strong and robust ferromagnetic material. One end of the cam (132) is attached to the shaft which is connected to the connector (138) linking the fan blade (106) and the cam (132). The other end of the shaft has multiple indentations (132C) which enables the cam (132) to get locked into its place by an electromagnetically powered pin (136). The electromagnetically powered pin (136) is placed such that it may retract inwards to let the cam rotate, or project outwards to keep thereto locked in its place. The indentations (132C) in the cam (132) may be at such angles which are optimal for maximum performance and efficiency. There are electromagnets (140) placed above and below the cam (132). When the angle needs to be adjusted, an electric current is passed through either of the electromagnets (140). When the electric current is passed through the electromagnet (140) placed above the cam (132), the cam (132) is attracted towards thereto, thereby resulting in rotation of the shaft. The connector (138) connected thereto also rotates, which in turn changes the angle of the fan blade (106) too, and the blade angle of the fan (100) gets adjusted. So in order to not let the fan blade (106) rattle when operating, or come back to its original position, the cam (132) gets locked into a stopper (142) and stays there, until another angle adjustment needs to be made based on either the user input parameters or the automatic algorithms of the compute unit (118) at a point where the electric current is passed through the electromagnet (140) placed below the cam (132), and the cam (132) gets pulled downwards.

In another embodiment as shown in FIG. 1I, exemplary mechanism utilizes a bevel gears setup assembly (150). A main gear (152) of the assembly (150) may be driven using an auxiliary motor (154), which is inside the hub (102A) of the fan (100). Objective of a low power consumption of the auxiliary motor (150) is to drive the main bevel gear (152). The main bevel gear (152) may be connected perpendicularly to a secondary gear (156). Shaft (158) of the secondary gear (156) is directly connected to the fan blade (106). When the auxiliary motor (154) turns the main bevel gear setup (152), it rotates in either clockwise, or anticlockwise direction. Rotation of the main bevel gear setup (152) rotates all the gears connected thereto, and thereby, changing the angle of the fan blade (106). Once the desired angle of the fan blade (106) is achieved, the auxiliary motor (154) stops rotating, and locks the gears in place thereof.

Another exemplary mechanism may utilize an epicyclic gear mechanism setup assembly. An epicyclic gear arrangement is placed inside the hub (102A) such that the fan blades (106) are in contact with the epicyclic gear arrangement via bevel gears. When the fan (100) rotates, the whole epicyclic gear mechanism setup assembly rotates as threaded shaft thereof is freely separated by a ball bearing from a stator shaft. When angles of the fan blades (106) need to be adjusted, an auxiliary motor is connected to the threaded shaft by a threaded shaft of its own. The motor when given the signal by the electronics of the fan, rotates the main sun gear of the epicyclic gear arrangement. This brings a motion in the rest of the gears as well, resulting in the motion of the bevel gear, which in turn changes the angle of the blades attached to it.

The fan (100) can also adjust the blade angles individually while compensating for the imbalance of the air resistance, thereby giving out different airflow patterns and modulate the spread of purified air or the disinfectant mist.

It is contemplated that the aforementioned exemplary mechanisms are provided for brief understanding of the present disclosure by technical persons skilled in the art and may not be considered just as limiting in the disclosure. There may be more mechanisms to achieve the objectives of the present disclosure.

The present disclosure has various advantages including such as but not limited to ability to dynamically change its shape to adapt to rooms of various sizes and user needs, dynamic variation in the air flow and air attack angle makes thereto versatile in a saturated field of ceiling fans.

As shown in flowchart in FIG. 2, the present disclosure discloses a method (200) for ensuring complete ventilation and exhaustive air purification in a room along with enhancement in volume, temperature and distribution of air throw and circulation of purified air from the top of the room. The fan (100) is configured to receive input from either the multiple sensors or the user input parameters or both. The received data is analysed to determine either angular shift or amount of speed to vary or both of the fan blades (106), thereby to impact air attack and air fluid dynamics of the fan (100) to meet required efficiency of the fan (100). Then, the shaft (108) is actuated to align with respect to joinery assembly (114) in such a way to cause either angular shift or speed variation or both of the fan blades (106) to impact air attack of the fan (100) and air fluid dynamics dynamically to meet the required efficiency. The air throw to be circulated is also processed for filtration and temperature modulation. The air and its volume is enhanced by the mixing the purified and processed air which is egressed from the fan's trims with the external unprocessed air which is being pushed downwards by the fan's blades due to their air attack angles and movements. This mixing and movement of the air processed within the fan with the external air is enhanced by the distribution of this air throw and circulation along with dynamic variation in air attack and air fluid dynamics thereof based on real time environmental parameters, room parameters, and user preferences.

In another embodiment (shown in FIG. 1K), an external compressor unit (180) such as a heating unit, cooling unit, or a similar temperature modulation unit is placed on the premises of the building. An air egression duct (182) of the unit (180) is connected to the fan's (100) canopy via an air tight leakproof insulated air channel. This allows for the fan (100) to be directly linked with the building unit's central heating or cooling systems. The temperature modulated air which the fan (100) receives from the external temperature modulation unit is circulated throughout the space in an efficient and fast manner.

In a nutshell in an exemplary for better understanding of the present disclosure, a person in New Delhi is in his bedroom during the month of March, when the temperature outside is hot enough for running a fan indoors, but still cold enough to not put on an air conditioner. It is 3 PM and the temperature outside is 30 degrees Celsius. Due to the onwards of spring season, there is a lot of pollen in the air, due to this the person cannot step outside, nor can they open the windows of their room. The person is feeling hot and uncomfortable. They switch on the fan (100). The fan (100) records the environment temperature using the inbuilt temperature sensor, the AQI sensor records the air quality data and the thermal sensor along with the LiDAR sensor locates the position of the person and creates a 3D map of the room updating the fan's location in the room. Now the compute receives the data from the sensors and the algorithms process it. Once processed, it decides upon the speed at which the fan should rotate to provide most soothing air throw at the person. The compute also signals the actuating unit to set the fan blades at a particular angle so that the air is not only soft and calming in its throw, but also aimed at the space where the person is located in the room by ensuring maximum reach if the person is seated farther from the fan. In case the person is seated near the fan, the fan's blades change their angles accordingly. The compute unit also sends out a signal to the air filtration unit to run itself at a certain level so as to circulate clean and healthy pollen-free, particulate-free air for the person. Lastly, the compute also sends out commands to the temperature modulation unit to operate at a certain temperature so that the room temperature can be brought down from an uncomfortable 30 degrees to a more comfortable 24 to 27 degrees Celsius range. By 3:05 PM the AQI of the room has improved, and the temperature has also started trickling down.

FIG. 3 shows a graph depicting rapid speed at which the pollutants decrease in a room where the present invention is deployed. The graph showcases the rapid speed at which the pollutants decrease in a room where the fan (100) is deployed. Hence,

• • Rapid Air Quality Improvement: The fan (100) effectively reduced PM 2.5 levels from 999 to 50 in 90 minutes, showcasing its powerful air purification capabilities.
  • HEPA+UV Combination: The integrated HEPA filter trapped fine particulate matter, while the UV LED neutralized airborne microbes, providing a comprehensive purification solution.
  • Dynamic Airflow: The fan's unique blade adjustment ensured optimal circulation, evenly distributing purified air throughout the room.
  • Efficient Dual Functionality: Unlike standalone air purifiers or traditional fans, the fan (100) combines air purification and cooling, making it an all-in-one solution for indoor environments. Thus, the fan (100) has practical application in Urban Settings, ideal for homes, offices, and healthcare facilities where air quality is a primary concern.
  • Energy Efficiency: Despite its robust performance, the fan (100) operates on a low-power BLDC motor, ensuring cost-effective operation.

Users may achieve improved indoor air quality without the need for additional air purification devices; Enhanced comfort through dynamic airflow and cooling capabilities; A sustainable, energy-efficient solution for healthier living spaces.

The real-world test demonstrates that the fan (100) is not just a fan but a revolutionary device that addresses air quality and comfort simultaneously. With its ability to rapidly reduce PM 2.5 levels in a short time frame, AirShifter sets a new benchmark for smart ceiling fans in the market.

FIG. 4 shows CFD flow analysis of the present invention at 270 rpm (10 degrees of alignment). FIG. 5 shows CFD flow analysis of the present invention at 270 rpm (15 degrees of alignment); and FIG. 6 shows CFD flow analysis of the present invention at 320 rpm (15 degrees of alignment).

The foregoing descriptions of exemplary embodiments of the present disclosure have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed, and obviously many modifications and variations are possible in the light of the above teachings. The exemplary embodiments were chosen and described in order to best explain the principles of the disclosure and its practical application, to thereby enable others skilled in the art to best utilize the disclosure and various embodiments with various modifications as are suited to the particular use contemplated.