Claims:1. An air filtration system for a Heating, Ventilation and Air Conditioning (HVAC) unit, the system comprising:
an air duct unit configured to facilitate flow of air between a first location and a second location, the air duct unit comprises one or more filters adapted to move between a first position and a second position, wherein the first position corresponds to a position where the one or more filters are at least partially exposed to the flow of air to facilitate filtering of one or more polluting agents from the air flowing from the first location to the second location, and the second position corresponds to a position where the one or more air filters are unexposed to the flow of air;
a first set of sensors located at the first location, the first set of sensors configured to monitor a first concentration of the one or more polluting agents present in the first location and generate a first set of signals corresponding to the first concentration of the one or more polluting agents;
a second set of sensors located at the second location, the second set of sensors configured to monitor a second concentration of the one or more polluting agents present in the second location and generate a second set of signals corresponding to the second concentration of the one or more polluting agents; and
a computing unit operatively coupled to the first set of sensors and the second set of sensors, the computing unit comprising one or more processors configured to execute one or more instructions stored in a memory of the computing unit to:
receive the first set of signals from the first set of sensors and extract the first concentration of the one or more polluting agents from the received first set of signals; and
receive the second set of signals from the second set of sensors and extract the second concentration of the one or more polluting agents from the second set of sensors;
wherein the computing unit is configured to transmit a third set of signals to the air duct unit to enable positioning of the one or more filters at the second position when the first concentration and the second concentration of the one or more polluting agents are within a first predetermined value; and
wherein the computing unit is configured to transmit a fourth set of signals to the air duct unit to enable positioning of the one or more filters at the first position when at least one of the first concentration and the second concentration of the one or more polluting agents exceeds the first predetermined value.
2. The system as claimed in claim 1, wherein the computing unit is configured to transmit the third set of signals to the air duct unit to enable positioning of the one or more filters at the second position when the second concentration of the one or more polluting agents are within the first predetermined value and there is no flow of air from the first location to the second location.
3. The system as claimed in claim 1, wherein the second position of the one or more filters corresponds to the position where the one or more filters are unexposed to the flow of air to reduce a resistance to the flow of air between the first location and the second location.
4. The system as claimed in claim 1, wherein the air duct unit comprises at least one inlet to allow inflow of air from the first location into the air duct unit, at least one outlet to allow outflow of air into the second location, and wherein the air duct unit comprises one or more ducts to fluidically couple the at least one inlet to the at least one outlet.
5. The system as claimed in claim 1, wherein the air duct unit comprises one or more air pumping means to control the flow of air between the first location and the second location, and wherein the one or more air pumping means is any or a combination of a fan, a blower and a pump.
6. The system as claimed in claim 5, wherein the system is configured to reduce air pumping speed of the one or more pumping means when the one or more filters are positioned at the second position.
7. The system as claimed in claim 1, wherein the system comprises one or more actuating means operatively coupled to the computing unit, the one or more actuating means configured to move the one or more filters between the first position and the second position.
8. The system as claimed in claim 7, wherein the one or more actuating means comprises any or a combination of a linear actuator, a DC motor, a servo motor, and a stepper motor.
9. The system as claimed in claim 1, wherein the one or more polluting agents are any or a combination of CO2, SO2, NOx, carbon monoxide (CO), volatile organic compounds, particulate matter, dust, toxic metal, and chlorofluorocarbons (CFCs), and wherein the first set of sensors and the second set of sensors are any or a combination of a CO2 sensor, a SO2 sensor, a NOx sensor, a CO sensor, a volatile organic compounds sensor, a particulate matter sensor, a dust sensor, a toxic metal sensor, and a CFCs sensor.
10. The system as claimed in claim 1, wherein the system is configured to restrict the flow of air from the first location to the second location when a difference between the first concentration and the second concentration of the one or more polluting agents exceeds a second predetermined value.
, Description:TECHNICAL FIELD
[0001] The present disclosure relates to the field of air filtration system. More particularly, the present disclosure relates to an air filtration system for a heating, ventilation and air conditioning (HVAC) unit for controlling flow of fresh air inside a location.

BACKGROUND
[0002] 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.
[0003] In present world, life of people is changing rapidly with rapid increase in population. This increase in population has increased the pollution level to a level which is very dangerous and beyond safe limits for human being and animals. Pollution is directly affecting people of every age, and air pollution is one of the major factors that are causing various health related issues in people. Air pollution is directly affecting the respiratory system of normal people as well as the people already having respiratory disorders or breathing problems.
[0004] Nowadays, modern buildings are having closed structures and better quality seals around all the inlets and outlets of the buildings. This type of construction has given rise to the concern for providing adequate ventilation and proper heating and cooling inside the indoor structures, in light of the need for a continuous supply of fresh air with comfortable temperature inside the indoor structures.
[0005] Various Heating Ventilation and Air Conditioning (HVAC) units or ventilations systems are available in the market, which allows flow of air from an outside location (environment) to the indoor structures and maintain a comfortable temperature inside the indoor structure. Adding fresh air to the indoor structures accomplishes two primary indoor air quality goals. It pressurizes the indoor structures and increases indoor air quality by diluting polluted or stale indoor air.
[0006] These HVAC units or ventilation systems include a powerful fan to facilitate flow of air from the outside location to the indoor structure through air filters disposed inside the HVAC unit or the ventilation system to purify the air. These air filters purifies the air by absorbing and retaining the air pollutants.
[0007] However, the use of air filters has a disadvantage that they add resistance to the air flowing through the HVAC units or the ventilation systems, thereby making the fan of the HVAC units or ventilation systems to draw more electrical power. The use of these air filters at the cost of increased air resistance makes sense only if the outside air has more pollutants. But, if the outside and indoor air have safe concentration of pollutants, then the use of air filters are not required. In such case, these air filters only adds resistance to the flow of air and consumes extra electrical power to run the fan, making the air filtration system of the HVAC units less energy efficient.
[0008] There is, therefore, a need in the art to develop an energy efficient air filtration system for a HVAC unit or ventilation system, which automatically controls the displacement of air filters to reduce air resistance post comparison of indoor and outdoor air qualities.

OBJECTS OF THE PRESENT DISCLOSURE
[0009] Some of the objects of the present disclosure, which at least one embodiment herein satisfies are as listed herein below.
[00010] It is an object of the present disclosure to provide an efficient air filtration system for a HVAC unit to supply fresh air to a location.
[00011] It is an object of the present disclosure to provide an air filtration system for a HVAC unit to supply fresh air from one location to another location, which monitors the air quality of the two locations.
[00012] It is an object of the present disclosure to provide an air filtration system for a HVAC unit to supply fresh air from one location to another location, which displaces the air filters to reduce resistance to the flow of air.
[00013] It is an object of the present disclosure to provide an air filtration system for a HVAC unit to supply fresh air from one location to another location, which displaces the air filters to reduce resistance to the flow of air, thereby reducing energy consumption of the unit.
[00014] It is an object of the present disclosure to provide an air filtration system for a HVAC unit to supply fresh air from one location to another location, which displaces the air filters to reduce resistance to the flow of air if the air quality at the two locations are within safe limits.
[00015] It is an object of the present disclosure to provide an air filtration system for a HVAC unit to supply fresh air from one location to another location, which restricts the flow of air between the two locations if the quality of air to be supplied is worse.
SUMMARY
[00016] The present disclosure relates to the field of air filtration system. More particularly, the present disclosure relates to an air filtration system for a heating, ventilation and air conditioning (HVAC) unit for controlling flow of fresh air inside a location.
[00017] An aspect of the present disclosure pertains to an air filtration system for a Heating, Ventilation and Air Conditioning (HVAC) unit, the system comprising: an air duct unit configured to facilitate flow of air between a first location and a second location, the air duct unit may comprise one or more filters adapted to move between a first position and a second position, wherein the first position may correspond to a position where the one or more filters may be at least partially exposed to the flow of air to facilitate filtering of one or more polluting agents from the air flowing from the first location to the second location, and the second position may correspond to a position where the one or more air filters may be unexposed to the flow of air; a first set of sensors located at the first location, the first set of sensors may be configured to monitor a first concentration of the one or more polluting agents present in the first location and generate a first set of signals corresponding to the first concentration of the one or more polluting agents; a second set of sensors located at the second location, the second set of sensors may be configured to monitor a second concentration of the one or more polluting agents present in the second location and generate a second set of signals corresponding to the second concentration of the one or more polluting agents; and a computing unit operatively coupled to the first set of sensors and the second set of sensors, the computing unit may comprising one or more processors configured to execute one or more instructions stored in a memory of the computing unit to: receive the first set of signals from the first set of sensors and extract the first concentration of the one or more polluting agents from the received first set of signals; and receive the second set of signals from the second set of sensors and extract the second concentration of the one or more polluting agents from the second set of sensors; wherein the computing unit may be configured to transmit a third set of signals to the air duct unit to enable positioning of the one or more filters at the second position when the first concentration and the second concentration of the one or more polluting agents are within a first predetermined value; and wherein the computing unit may be configured to transmit a fourth set of signals to the air duct unit to enable positioning of the one or more filters at the first position when at least one of the first concentration and the second concentration of the one or more polluting agents exceeds the first predetermined value.
[00018] In an aspect, the computing unit may be configured to transmit the third set of signals to the air duct unit to enable positioning of the one or more filters at the second position when the second concentration of the one or more polluting agents are within the first predetermined value and there is no flow of air from the first location to the second location.
[00019] In another aspect, the second position of the one or more filters may correspond to the position where the one or more filters may be unexposed to the flow of air to reduce a resistance to the flow of air between the first location and the second location.
[00020] In yet another aspect, the air duct unit may comprise at least one inlet to allow inflow of air from the first location into the air duct unit, at least one outlet to allow outflow of air into the second location, and wherein the air duct unit may comprise one or more ducts to fluidically couple the at least one inlet to the at least one outlet.
[00021] In an aspect, the air duct unit may comprise one or more air pumping means to control the flow of air between the first location and the second location, and wherein the one or more air pumping means may be any or a combination of a fan, a blower and a pump.
[00022] In another aspect, the system may be configured to reduce air pumping speed of the one or more pumping means when the one or more filters are positioned at the second position.
[00023] In yet another aspect, the system may comprise one or more actuating means operatively coupled to the computing unit, the one or more actuating means may be configured to move the one or more filters between the first position and the second position.
[00024] In an aspect, the one or more actuating means may comprise any or a combination of a linear actuator, a DC motor, a servo motor, and a stepper motor.
[00025] In another aspect, the one or more polluting agents may be any or a combination of CO2, SO2, NOx, carbon monoxide (CO), volatile organic compounds, particulate matter, dust, toxic metal, and chlorofluorocarbons (CFCs), and wherein the first set of sensors and the second set of sensors may be any or a combination of a CO2 sensor, a SO2 sensor, a NOx sensor, a CO sensor, a volatile organic compounds sensor, a particulate matter sensor, a dust sensor, a toxic metal sensor, and a CFCs sensor.
[00026] In yet another aspect, the system may be configured to restrict the flow of air from the first location to the second location when a difference between the first concentration and the second concentration of the one or more polluting agents exceeds a second predetermined value.
[00027] Various objects, features, aspects and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components
[00028] Within the scope of this application it is expressly envisaged that the various aspects, embodiments, examples and alternatives set out in the preceding paragraphs, in the claims and/or in the following description and drawings, and in particular the individual features thereof, may be taken independently or in any combination. Features described in connection with one embodiment are applicable to all embodiments, unless such features are incompatible

BRIEF DESCRIPTION OF DRAWINGS
[00029] The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. The diagrams are for illustration only, which thus is not a limitation of the present disclosure.
[00030] FIG. 1 illustrates an exemplary block diagram of the proposed air filtration system for a HVAC unit, in accordance with an embodiment of the present disclosure,
[00031] FIG. 2 illustrates an exemplary process flow diagram of the proposed system, in accordance with an embodiment of the present disclosure, to elaborate upon its working.
[00032] FIG. 3 illustrates an exemplary block diagram of an air duct unit of the proposed air filtration system for a HVAC unit, in accordance with an embodiment of the present disclosure.
[00033] FIG. 4 illustrates an exemplary system architecture of the proposed system, in accordance with an embodiment of the present disclosure, to elaborate upon its working.

DETAILED DESCRIPTION
[00034] The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[00035] In the following description, numerous specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent to one skilled in the art that embodiments of the present invention may be practiced without some of these specific details.
[00036] If the specification states a component or feature “may”, “can”, “could”, or “might” be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
[00037] As used in the description herein and throughout the claims that follow, the meaning of “a,” “an,” and “the” includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of “in” includes “in” and “on” unless the context clearly dictates otherwise.
[00038] The use of “including”, “comprising” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Further, the use of terms “first”, “second”, and “third”, and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another
[00039] Groupings of alternative elements or embodiments of the invention disclosed herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
[00040] Embodiments of the present invention may be provided as a computer program product, which may include a machine-readable storage medium tangibly embodying thereon instructions, which may be used to program a computer (or other electronic devices) to perform a process. The machine-readable medium may include, but is not limited to, fixed (hard) drives, magnetic tape, floppy diskettes, optical disks, compact disc read-only memories (CD-ROMs), and magneto-optical disks, semiconductor memories, such as ROMs, PROMs, random access memories (RAMs), programmable read-only memories (PROMs), erasable PROMs (EPROMs), electrically erasable PROMs (EEPROMs), flash memory, magnetic or optical cards, or other type of media/machine-readable medium suitable for storing electronic instructions (e.g., computer programming code, such as software or firmware).
[00041] Exemplary embodiments will now be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided so that this disclosure will be thorough and complete and will fully convey the scope of the invention to those of ordinary skill in the art. Moreover, all statements herein reciting embodiments of the invention, as well as specific examples thereof, are intended to encompass both structural and functional equivalents thereof. Additionally, it is intended that such equivalents include both currently known equivalents as well as equivalents developed in the future (i.e., any elements developed that perform the same function, regardless of structure).
[00042] The present disclosure relates to the field of air filtration system. More particularly, the present disclosure relates to an air filtration system for a heating, ventilation and air conditioning (HVAC) unit for controlling flow of fresh air inside at a location.
[00043] An aspect of the present disclosure elaborates upon an air filtration system for a Heating, Ventilation and Air Conditioning (HVAC) unit, the system including: an air duct unit configured to facilitate flow of air between a first location and a second location, the air duct unit can include one or more filters adapted to move between a first position and a second position, wherein the first position can correspond to a position where the one or more filters can be at least partially exposed to the flow of air to facilitate filtering of one or more polluting agents from the air flowing from the first location to the second location, and the second position can correspond to a position where the one or more air filters can be unexposed to the flow of air; a first set of sensors located at the first location, the first set of sensors can be configured to monitor a first concentration of the one or more polluting agents present in the first location and generate a first set of signals corresponding to the first concentration of the one or more polluting agents; a second set of sensors located at the second location, the second set of sensors can be configured to monitor a second concentration of the one or more polluting agents present in the second location and generate a second set of signals corresponding to the second concentration of the one or more polluting agents; and a computing unit operatively coupled to the first set of sensors and the second set of sensors, the computing unit including one or more processors configured to execute one or more instructions stored in a memory of the computing unit to: receive the first set of signals from the first set of sensors and extract the first concentration of the one or more polluting agents from the received first set of signals; and receive the second set of signals from the second set of sensors and extract the second concentration of the one or more polluting agents from the second set of sensors; wherein the computing unit can be configured to transmit a third set of signals to the air duct unit to enable positioning of the one or more filters at the second position when the first concentration and the second concentration of the one or more polluting agents are within a first predetermined value; and wherein the computing unit can be configured to transmit a fourth set of signals to the air duct unit to enable positioning of the one or more filters at the first position when at least one of the first concentration and the second concentration of the one or more polluting agents exceeds the first predetermined value.
[00044] In an aspect, the computing unit can be configured to transmit the third set of signals to the air duct unit to enable positioning of the one or more filters at the second position when the second concentration of the one or more polluting agents are within the first predetermined value and there is no flow of air from the first location to the second location.
[00045] In another aspect, the second position of the one or more filters can correspond to the position where the one or more filters can be unexposed to the flow of air to reduce a resistance to the flow of air between the first location and the second location.
[00046] In yet another aspect, the air duct unit can include at least one inlet to allow inflow of air from the first location into the air duct unit, at least one outlet to allow outflow of air into the second location, and wherein the air duct unit can include one or more ducts to fluidically couple the at least one inlet to the at least one outlet.
[00047] In an aspect, the air duct unit can include one or more air pumping means to control the flow of air between the first location and the second location, and wherein the one or more air pumping means can be any or a combination of a fan, a blower and a pump.
[00048] In another aspect, the system can be configured to reduce air pumping speed of the one or more pumping means when the one or more filters are positioned at the second position.
[00049] In yet another aspect, the system can include one or more actuating means operatively coupled to the computing unit, the one or more actuating means can be configured to move the one or more filters between the first position and the second position.
[00050] In an aspect, the one or more actuating means can include any or a combination of a linear actuator, a DC motor, a servo motor, and a stepper motor.
[00051] In another aspect, the one or more polluting agents can be any or a combination of CO2, SO2, NOx, carbon monoxide (CO), volatile organic compounds, particulate matter, dust, toxic metal, and chlorofluorocarbons (CFCs), and wherein the first set of sensors and the second set of sensors can be any or a combination of a CO2 sensor, a SO2 sensor, a NOx sensor, a CO sensor, a volatile organic compounds sensor, a particulate matter sensor, a dust sensor, a toxic metal sensor, and a CFCs sensor.
[00052] In yet another aspect, the system can be configured to restrict the flow of air from the first location to the second location when a difference between the first concentration and the second concentration of the one or more polluting agents exceeds a second predetermined value.
[00053] FIG. 1 illustrates an exemplary block diagram of the proposed air filtration system for a HVAC unit, in accordance with an embodiment of the present disclosure,
[00054] As illustrated, according to an aspect, the proposed air filtration system 100 can include an air duct unit 102 configured to facilitate flow of air between a first location 104 and a second location 106. The first location 104 can be a position inside a building, automobile, and elevator, but not limited to the likes. The second location 106 can be a position outside the first location 104 such as outdoor environment, but not limited to the likes. The air duct unit 102 can include one or more filters 202 (also referred to as filters 202, herein) to filter one or more polluting agents from the air flowing between the first location 104 and the second location 106.
[00055] In an embodiment, the system 100 can include a first set of sensors 108 (also referred to as first sensors 108, herein) located at the first location 104 to monitor a first concentration of the one or more polluting agents present in the first location 104 and generate a first set of signals corresponding to the first concentration of the one or more polluting agents.
[00056] In an embodiment, the system 100 can include a second set of sensors 110 (also referred to as second sensors 110, herein) located at the second location 106 to monitor a second concentration of the one or more polluting agents present in the first location 104 and generate a second set of signals corresponding to the second concentration of the one or more polluting agents.
[00057] In an embodiment, the one or more polluting agents can be any or a combination of CO2, SO2, NOx, carbon monoxide (CO), volatile organic compounds, particulate matter, dust, toxic metal, and chlorofluorocarbons (CFCs), but not limited to the likes.
[00058] In an embodiment, the first sensors 108 and the second sensors 110 can be any or a combination of a CO2 sensor, a SO2 sensor, a NOx sensor, a CO sensor, a volatile organic compounds sensor, a particulate matter sensor, a dust sensor, a toxic metal sensor, and a CFCs sensor, but not limited to the likes.
[00059] In an embodiment, the system 100 can include a computing unit 112 that can include one or more processors, which can be configured to execute one or more instructions stored in a memory of the computing unit 112. The computing unit 112 can be operatively coupled to the first sensors 108 and the second sensors 110, and can be further configured to receive the first set of signals from first sensors 108, and the second set of signals from the second sensors 110.
[00060] In an embodiment, the computing unit 112 can be configured to extract the first concentration of the one or more polluting agents from the received first set of signals. The computing unit 112 can further extract the second concentration of the one or more polluting agents from the second set of signals.
[00061] In an embodiment, the filters can be adapted to move between a first position and a second position. The first position can correspond to a position where the filters can be at least partially exposed to the flow of air to facilitate filtering of one or more polluting agents from the air flowing from the first location to the second location. The second position can correspond to a position where the one or more air filters can be unexposed to the flow of air to reduce a resistance to the flow of air between the first location and the second location
[00062] In an embodiment, the computing unit 112 can be configured to transmit a third set of signals to the air duct unit 102 to enable positioning of the filters at the second position when the first concentration and the second concentration of the one or more polluting agents are within a first predetermined value.
[00063] In another embodiment, the computing unit 112 can be configured to transmit the third set of signals to the air duct unit 102 to enable positioning of the filters at the second position when the second concentration of the one or more polluting agents are within the first predetermined value and there is no flow of air from the first location to the second location.
[00064] In an embodiment, the computing unit 112 can be configured to transmit a fourth set of signals to the air duct unit 102 to enable positioning of the filters at the first position when at least one of the first concentration and the second concentration of the one or more polluting agents exceeds the first predetermined value.
[00065] In an embodiment, the system 100 can be configured to restrict the flow of air from the first location to the second location when a difference between the first concentration and the second concentration of the one or more polluting agents exceeds a second predetermined value.
[00066] FIG. 2 illustrates an exemplary process flow diagram of the proposed system, in accordance with an embodiment of the present disclosure, to elaborate upon its working.
[00067] As illustrated, the working of the proposed air filtration system can include a step 202-1 of measuring the first concentration of the one or more polluting agents present at the first location 104 by the first sensors 108, and another step 202-2 of measuring the second concentration of the one or more polluting agents present at the second location 106 by the second sensors 110.
[00068] In an embodiment, the process can further include a step 204-1 of generating a corresponding first set of signals by the first sensors 104 based on the first concentration of the one or more polluting agents in the step 202-1, and a step 204-2 of generating a corresponding second set of signals by the second sensors 106 based on the second concentration of the one or more polluting agents in the step 202-2.
[00069] In an embodiment, the process can further include a step 206 of receiving the first set of signals and the second set of signals from the steps 204-1 and 204-2, respectively, by the computing unit 110.
[00070] In an embodiment, the process can include a step 208 of checking if the first concentration and the second concentration of the one or more polluting agents exceed a first predetermined value or not.
[00071] In an embodiment, the process can include a step 210 of transmitting a third set of signals by the computing unit 110 to the air duct unit 102, if the first concentration and the second concentration of the one or more polluting agents exceed the first predetermined value. The process can further include a step 212 of moving the filters 306 to the first position to expose the filters to the flow of air to filter the polluting agents from the air flowing from the first location to the second location.
[00072] In an embodiment, the process can include a step 210 of transmitting a fourth set of signals by the computing unit 110 to the air duct unit 102, if the first concentration and the second concentration of the one or more polluting agents are below the first predetermined value. The process can further include a step 212 of moving the filters 306 to the second position to displace the filters away from the flow of air to reduce the resistance to the flow of air inside the air duct unit 102.
[00073] In an embodiment, the process can include a step 218 of reducing the air pumping speed of the air pumping means along with the step 210 of displacing the filters to the second position, if the first concentration and the second concentration of the one or more polluting agents are below the first predetermined value, thereby reducing the electrical power consumption of the proposed system.
[00074] FIG. 3 illustrates an exemplary block diagram of an air duct unit of the proposed air filtration system for a HVAC unit, in accordance with an embodiment of the present disclosure.
[00075] As illustrated, the air duct unit 102 of the proposed system can include at least one inlet 302 (also referred to as inlets 302, herein) to allow inflow of air from the first location into the air duct unit 102, and at least one outlet 314 (also referred to as outlets 314, herein) to allow outflow of air from the air duct unit 102 into the second location 106. The air duct unit 102 can further include one or more ducts 304-1, 304-2 (collectively referred to as ducts 304, herein) to fluidically couple the first location 104 and the second location 106 through the inlets 302 and the outlets 314.
[00076] In an embodiment, the air duct unit 102 can include the filters 306 positioned at predefined positions inside the ducts 304 of the air duct unit 102. The filters 306 can be configured to move between the first position and the second position. In an embodiment, the air duct unit 102 can include one or more actuators 312 (also referred to as filter actuators 312, herein) operatively coupled to the computing unit 112. The filter actuators 312 can be configured to receive the third set of signals to move the filters 306 at the second position, unexposed to the flow of air in the ducts 304. The filter actuators 312 can be configured to receive the fourth set of signals to move the filters 306 at the first position, exposed to the flow of air in the ducts 304 to facilitate filtering of the air flowing from the first location 104 to the second location 106.
[00077] In an embodiment, the filter actuators 312 can be any or a combination of a linear actuator and electrical motors such as a DC motor, a servo motor, and a stepper motor, but not limited to the likes.
[00078] In an exemplary embodiment, the linear actuator can enable linear movement of the filters 306 such that the filters 306 can move inside and outside of the ducts. The inside movement of the filters 306 in the ducts 304 can correspond to the first position where the filters 306 can be at least partially exposed to the air flowing inside the ducts 304, and the outside movement of the filters 306 from the ducts 304 can correspond to the second position where the filters 306 can be unexposed to the air flowing inside the ducts 304
[00079] In another exemplary embodiment, the electrical motor can enable rotation of the filters 306 about an axis of rotation inside the ducts 304 such that the filters 306 can move between the first position and the second position. The electrical motor can be configured to rotate the filters 306 to the first position such that the filters 306 can be at least partially exposed to the air flowing inside the ducts 304. Further, the electrical motors can be configured to rotate the filters 306 to the second position such that the filters 306 can be unexposed to the air flowing inside the ducts 304.
[00080] In an embodiment, the air duct unit 102 can include one or more air pumping means 308 (also referred to as air pumping means 308 or pumping means 308, herein) to control the flow of air between the first location 104 and the second location 106. In an exemplary embodiment, the pumping means 308 can any or a combination of a fan, a blower and a pump, but not limited to the likes.
[00081] In an embodiment, the pumping means 308 can be positioned at a suitable position inside the air duct unit 102, which can be any or a combination of the inlets 302, the outlets 314, and inside the ducts 304, but not limited to the likes.
[00082] In an embodiment, the air duct unit 102 can include one or more air pumping means actuators 310 (also referred to as pumping actuators 310, herein) to control the air pumping speed of the pumping means 308.
[00083] In an embodiment, the air duct unit 102 can include other HVAC components 316, which can be any or a combination of a damper, a cooling unit, a heating unit, a humidifier, temperature sensors, but not limited to the likes.
[00084] FIG. 4 illustrates an exemplary system architecture of the proposed system, in accordance with an embodiment of the present disclosure, to elaborate upon its working.
[00085] As illustrated, in an embodiment, the proposed system 100 can include first sensors 108 at a first location 104 to monitor a first concentration of one or more polluting agents present at the first location 104, and second sensors 110 at a second location 106 to monitor a second concentration of the one or more polluting agents present at the second location 106. The system 100 can include a computing unit 112 operatively coupled to the first sensors 108 and the second sensors 110.
[00086] In an embodiment, the system 100 can include an air duct unit 102 to facilitate flow of air between the first location 104 and the second location 106. The air duct unit 102 can include the inlets to allow inflow of air from the first location 104 into the air duct unit 102, and the outlets to allow outflow of air into the second location 106. The air duct unit 102 can include the ducts 304 to fluidically couple the first location and the second location through the inlets and the outlets.
[00087] In an embodiment, as illustrated in FIG.4, each of the ducts 304-1, 304-2 can include a corresponding inlet and a corresponding outlet. The duct 304-1 can facilitate flow of air from the first location 104 to the second location 106, and the duct 304-2 can facilitate flow of air from the second location 106 to the first location 104.
[00088] In an embodiment, the air duct unit 102 can include the air pumping means 308 to control the flow of air between the first location 104 and the second location 106. In an embodiment, the air duct unit 102 can be configured to control the flow of air between the first location 104 and the second location 106. The air duct unit 102 can include the pumping means actuators 310 operatively coupled to the computing unit 112 and configured to control the speed of air flowing through the ducts 304 of the air duct unit 102. In another embodiment, the pumping means actuators 310 can control the pumping means 204 to restrict the flow of air from the first location 104 to the second location 106.
[00089] In an embodiment, the air duct unit 102 can include the filters 202 positioned at suitable position inside the ducts 304 to facilitate filtration of the one or more polluting agents from the air flowing between the first location 104 and the second location 106. The air duct unit 102 can include the filter actuators 312 operatively coupled to the computing unit 112. The filter actuators 312 configured to receive the corresponding third set of signals or the fourth set of signals to control the movement of the filters 306 between the first position and the second position.
[00090] In an embodiment, the air duct unit 102 can include the other HVAC components 316 operatively coupled to the computing unit 112. The other HVAC components can be any or a combination of a damper, a cooling unit, a heating unit, a humidifier, temperature sensors, but not limited to the likes, which can be positioned at suitable positions inside the air duct unit 102. In an exemplary embodiment, the other HVAC components can be positioned inside the ducts 304.
[00091] It is to be appreciated that while various embodiments of the position and number of pumping means 308 and filters 306 have been described in the present disclosure and drawings with reference to the number of filters 306 and pumping means 308 to be one and positioned inside the first duct 304-1, however, the concept of the present disclosure can be for any number of pumping means 308 and filters 306 positioned at various suitable places in the air duct unit 102, and all such embodiments are well within the scope of the present disclosure without any limitations whatsoever.
[00092] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

ADVANTAGES OF THE INVENTION
[00093] The proposed disclosure provides an efficient air filtration system for a HVAC unit to supply fresh air to a location.
[00094] The proposed disclosure provides an air filtration system for a HVAC unit to supply fresh air from one location to another location, which monitors the air quality of the two locations.
[00095] The proposed disclosure provides an air filtration system for a HVAC unit to supply fresh air from one location to another location, which displaces the air filters to reduce resistance to the flow of air.
[00096] The proposed disclosure provides an air filtration system for a HVAC unit to supply fresh air from one location to another location, which displaces the air filters to reduce resistance to the flow of air, thereby reducing energy consumption of the unit.
[00097] The proposed disclosure provides an air filtration system for a HVAC unit to supply fresh air from one location to another location, which displaces the air filters to reduce resistance to the flow of air if the air quality at the two locations are within safe limits.
[00098] The proposed disclosure provides an air filtration system for a HVAC unit to supply fresh air from one location to another location, which restricts the flow of air between the two locations if the quality of air to be supplied is worse.