DESC:FIELD
The present disclosure relates to air conditioning systems.
BACKGROUND
The background information herein below relates to the present disclosure but is not necessarily prior art.
Places such as data centres require continuous cooling and conditioning of air due to the sheer number of data servers and their sensitivity to dust and particles. Air conditioners are useful in cooling and conditioning the air circulating in server rooms of the data centres. Conventionally, air conditioners are provided as split type air conditioners or as packaged type air conditioners. The type of the air conditioner depends on the availability of space and operational requirements of the data servers, and are usually determined before installing the data servers. Once the air conditioners are installed, it becomes difficult to change them in case of variation in the configuration of the servers. Further, it has been often observed that the air conditioners tend to occupy white space of the server rooms.
There is therefore felt a need for an air conditioning unit that alleviates the aforementioned drawbacks.
OBJECTS
Some of the objects of the present disclosure, which at least one embodiment herein satisfies, are as follows:
An object of the present disclosure is to provide an air conditioner.
Another object of the present disclosure is to provide an air conditioner that can be installed as a split type air conditioning unit or as a packaged type air conditioning unit.
Yet another object of the present disclosure is to provide an air conditioner that does not occupy white space.
Other objects and advantages of the present disclosure will be more apparent from the following description, which is not intended to limit the scope of the present disclosure.
SUMMARY
The present disclosure envisages an air conditioner which comprises an indoor unit and an outdoor unit. The indoor unit comprises a having an inlet and an outlet provided on opposite operative sides of the cabinet. The cabinet is configured to draw hot air from surroundings through the inlet. A set of evaporator coils is provided in the cabinet. The evaporator coils is configured to allow a low temperature refrigerant to flow therethrough to facilitate exchange of heat between the refrigerant and the hot air to cool the hot air. A plurality of circulation fans is mounted at the outlet. The circulation fans are configured to dispel cooled air to the surroundings through the outlet.
The outdoor unit comprises a housing having an inlet and outlet. The housing is configured to receive ambient air therein through the inlet. The outdoor unit further comprises a condenser set provided in the housing. The condenser is configured to fluidly communicate with the evaporator coils to receive hot refrigerant vapours therefrom, and are further configured to cool and condense the refrigerant vapours into liquid refrigerant. A plurality of fans is mounted at the outlet. The fans are configured to dispel hot exhaust air through the outlet.
The air conditioner is configured to define a split type air conditioner is defined when the indoor unit and the outdoor unit are positioned at different location, or a packaged type air conditioner when the indoor unit and the outdoor unit are attached to each other to form an integrated unit configured to be positioned at the same location.
In an embodiment, each of the cabinet and the housing include a plurality of lifting lugs configured on an operative top surface of the cabinet and the housing. The lifting lugs are configured to facilitate positioning of the cabinet and the housing in a desired configuration of the air conditioner.
In an embodiment, the air conditioner includes at least one conduit configured to enable fluid communication of the refrigerant between the evaporator coils and the condenser coils. The length of conduit is configured to vary with respect to the desired configuration of the air conditioner.
In another embodiment, the cabinet includes a grill provided on the inlet and the outlet.
In yet another embodiment, the indoor unit includes a plurality of sensors configured to measure critical parameters selected from the group consisting of temperature, humidity, and performance of the indoor unit, and a plurality of electrical terminals, the sensors configured to generate at least one sensed signal corresponding to the critical parameters.
In still another embodiment, the air conditioner includes a controller configured to receive the sensed signal. The controller is configured to control the flow of air into the conditioner based on the sensed signals.
In another embodiment, the indoor unit includes a first duct configured to extend from the inlet. The first duct comprises a plurality of first branches configured to draw in hot air.
In yet another embodiment, the indoor unit is configured to draw in hot air at a pressure head ranging between 150 to 300 Pascals.
In still another embodiment, the indoor unit includes a second duct configured to extend from the outlet of the cabinet. The second duct has a plurality of second branches configured to receive the cooled air from the evaporator coils, and further configured to expel the cooled air.
In an embodiment, the outdoor unit includes an exhaust hot air ducting configured to extend from the outlet. The ducting is configured to expel hot exhaust air from the outdoor unit.
In another embodiment, the outdoor unit is configured to dispel hot exhaust air at a pressure head ranging between 250 to 400 Pascals.
In yet another embodiment, the fans are electronically commutated fans.
In still another embodiment, the fans are fixed speed AC fans.
In an embodiment, the condenser set includes a set of condenser coils and a compressor.
In another embodiment, the compressor is a tandem compressor selected from the group consisting of fixed scroll compressors, digital scroll compressors, and inverter compressors.
In another embodiment, the cabinet is a rigid metallic cabinet configured to withstand vibrations occurring during an operative configuration of the fans.
In yet another embodiment, the cabinet has an insulated sandwiched panel provided thereon. The panel is configured to enable thermal isolation of the cabinet with respect to the surroundings.
In still another embodiment, each of the indoor unit and the outdoor unit includes a drain unit having drain connections and a drain pump configured to drain the wastewater from the indoor unit and the outdoor unit.
In one embodiment, the indoor unit includes a filter provided on the inlet.
In another embodiment, the outdoor unit includes a filter provided on the inlet.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
An air conditioner of the present disclosure will now be described with the help of the accompanying drawing, in which:
Figure 1 illustrates an isometric view of an indoor unit of the air conditioner;
Figure 2 illustrates an isometric view of an outdoor unit of the air conditioner;
Figure 3 illustrates a schematic view of the air conditioner in a split configuration, in accordance with a first embodiment of the present disclosure;
Figure 4 illustrates an isometric view of the air conditioner in a packaged configuration, in accordance with a second embodiment of the present disclosure;
Figure 5 illustrates a schematic view of the packaged type air conditioner of Figure 4;
Figure 6 illustrates a schematic view of the air conditioner in a ducted configuration, in accordance with a third embodiment of the present disclosure; and
Figure 7A and Figure 7B illustrate isometric views of drain section of the outdoor unit and the indoor unit, respectively.
LIST OF REFERENCE NUMERALS
05 false ceiling
10 server
20 terrace
30 room
40 niche in the wall of room
100A split type air conditioner
100B packaged type air conditioner
100C duct mode air conditioner
105 indoor unit
107 inlet of indoor unit
109 outlet of indoor unit
110A indoor circulation fan
110B outdoor circulation fan
111 cabinet of indoor unit
115 outdoor unit
117 inlet of outdoor unit
119 outlet of outdoor unit
120 housing of outdoor unit
125 conduit for pipe and cables
130 lifting lug
140 condenser exhaust duct
145 hot air return duct
150A, 150B drain section
152 drain pane (indoor)
153 drain pane (outdoor)
DETAILED DESCRIPTION
Embodiments, of the present disclosure, will now be described with reference to the accompanying drawing.
Embodiments are provided so as to thoroughly and fully convey the scope of the present disclosure to the person skilled in the art. Numerous details are set forth, relating to specific components, and methods, to provide a complete understanding of embodiments of the present disclosure. It will be apparent to the person skilled in the art that the details provided in the embodiments should not be construed to limit the scope of the present disclosure. In some embodiments, well-known processes, well-known apparatus structures, and well-known techniques are not described in detail.
The terminology used, in the present disclosure, is only for the purpose of explaining a particular embodiment and such terminology shall not be considered to limit the scope of the present disclosure. As used in the present disclosure, the forms “a”, “an” and “the” may be intended to include the plural forms as well, unless the context clearly suggests otherwise. The terms “comprises”, “comprising”, “including”, “includes” and “having” are open-ended transitional phrases and therefore specify the presence of stated features, elements, modules, units and/or components, but do not forbid the presence or addition of one or more other features, elements, components, and/or groups thereof.
The present disclosure envisages a preferred embodiment of an air conditioner with reference to Figure 1 through Figure 7B.
The air conditioner (hereinafter referred to ‘the air conditioner’) includes an indoor unit (105) and an outdoor unit (115).
In an embodiment, the indoor unit (105) includes a cabinet (111) having an inlet (107) and outlet (109) provided on opposite operative sides of the cabinet (111). The cabinet (111) is configured to draw hot air from the surroundings, in this case a room (30), inside the indoor unit (105) through the inlet (107), whereas the outlet (109) is configured to dispel cool air. In another embodiment, the indoor unit (105) has a grill provided at its inlet (107) and outlet (109).
The indoor unit (105) further includes an evaporator unit having a plurality of evaporator coils and a plurality of circulation fans (110A) mounted proximal to the evaporator coils and the outlet (109) of the cabinet (111). The evaporator coils are configured to allow a low temperature refrigerant to flow therethrough. Heat is exchanged between the refrigerant and the hot ambient air to facilitate cooling of the air. The circulation fans (110A) are configured to dispel air that has been cooled and conditioned back to the room (30). On the other hand, the refrigerant after absorbing the heat from the air, is converted into hot refrigerant vapours.
In an embodiment, the number of the fans (110A) is decided based on the cooling capacity of the unit.
In another embodiment, the indoor unit (105) includes a temperature sensor and a humidity sensor for measuring critical parameters of temperature and humidity of air in real time. The sensors are configured to communicate with a controller, and transmit the measured temperature and humidity sensed values to the controller. The controller is configured to control the airflow based on the received sensed values.
In an embodiment, the indoor unit (105) further includes a plurality of indoor control sensors configured to monitor the performance of the indoor unit (105), and a plurality of electrical terminals provided in the cabin.
In an embodiment, the outdoor unit (115) includes a housing (120) having an inlet (117) and outlet (119). The inlet (117) is configured to receive ambient air, whereas the outlet (119) is configured to dispel the hot air out from condenser coil, back to the surroundings.
The outdoor unit (115) further includes a condenser unit provided with a set of condenser coils, a plurality of condenser fans (110B), a plurality of metallic filters, and a compressor. The condenser coil is configured to fluidly communicate with the evaporator coils to receive the hot refrigerant vapours. The condenser coils are configured to condense the hot vapours to liquid refrigerant by reducing its temperature. The compressor is configured to be located proximal to the condenser coils. The compressor is configured to lower the pressure of the refrigerant. The fans (110B) are configured to be disposed proximal to the condenser coils, and are configured to dispel hot exhaust air through the outlet (119) to the ambient. The compressor set is configured to deliver variable cooling capacity with part-load efficiency
In another embodiment, the outdoor unit (115) includes a plurality of outdoor control sensors, an air filter, a control panel, an exhaust duct, and a plurality of electrical terminals provided in the housing (120).
In an embodiment, the control panel is configured to contain the controller therewithin.
The indoor unit (105) and the outdoor unit (115) of the air conditioner are configured to be connected to each other in such a way that the air conditioner can be configured as a split type air conditioner (100A) in a first embodiment or as a packaged type air conditioner (100B) in a second embodiment with respect to the requirement of a user.
In an embodiment, both the cabinet (111) and the housing (120) are provided with a plurality of lifting lugs (130) configured on an operative top surface of the cabinet (111) and the housing (120). The lifting lugs (130) are configured to facilitate configuration of the air conditioner as desired, i.e., as a split type air conditioner (100A) or as a packaged type air conditioner (100B).
To enable flow fluid communication of the of a refrigerant between the indoor unit (105) and the outdoor unit (115), a conduit (125) is employed. In an embodiment, for the split type air conditioner (100A), the length of the conduit (125) is kept considerably longer, to compensate for the larger distance between the indoor unit (105) and the outdoor unit (115). In another embodiment, for the packaged type air conditioner (100A). In an embodiment, the length of the conduit (125) is kept relatively shorter because the indoor unit (105) and the outdoor unit (115) are adjoined with each other.
In accordance with a first embodiment of the present disclosure, the air conditioner is configured as a split type air conditioner (100A), wherein the indoor unit (105) and the outdoor are located at two different locations and are in fluid communication with each other. The outdoor unit (115) is therefore located in an outdoor space such as a terrace (20) or any outdoor environment, whereas the indoor unit (105) is located in an indoor space.
The working of the split type air conditioner (100A) can be described as below:
In an embodiment, low pressure and low temperature liquid refrigerant is circulated through the evaporator provided in the indoor unit (105). Hot air from the room (30) is sucked in through the inlet (107) of the indoor unit (105) to facilitate heat exchange between the hot air and the refrigerant. The air is cooled and delivered out through the outlet (119) of the outdoor unit (115). Meanwhile, as the refrigerant absorbs heat of the air, it expands and transforms into its gaseous form. The gaseous refrigerant is passed to the outdoor unit (115), wherein the refrigerant is passed through the compressor and the condenser to again become the low pressure and low temperature liquid refrigerant. The heat that was absorbed by the refrigerant is released into ambient air sucked in through the inlet (117) of the outdoor unit (115) and dispelled through the outlet (119) of the outdoor unit (115).
In accordance with the second embodiment of the present disclosure, the air conditioner is configured as a packaged type air conditioner (100B), wherein the indoor unit (105) and the outdoor unit (115) are in the same location, and are attached to each other. The indoor unit (105) is further configured to be in fluid communication with the outdoor unit (115). The outdoor unit (115) is therefore located in a niche (40) configured on a wall of a room (30) that is to be air conditioned. The outdoor unit (115) is configured to communicate with the ambient surroundings.
The working of the packaged type air conditioner (100B) can be described as below:
In an embodiment, low pressure and low temperature liquid refrigerant is circulated through the evaporator provided in the indoor unit (105). Hot air from the room (30) is sucked in through the inlet (107) of the indoor unit (105) to facilitate heat exchange between the hot air and the refrigerant. The air is cooled and delivered out through the outlet (119) of the outdoor unit (115). Meanwhile, as the refrigerant absorbs heat of the air, it expands and transforms into its gaseous form. The gaseous refrigerant is passed to the outdoor unit (115), wherein the refrigerant is passed through the compressor and the condenser to again become the low pressure and low temperature liquid refrigerant. The heat that was absorbed by the refrigerant is released into ambient air sucked in through the inlet (117) of the outdoor unit (115) and dispelled through the outlet (119) of the outdoor unit (115).
In accordance with a third embodiment of the present disclosure, the air conditioner with multiple air distribution mode can be of two modes – duct mode and free flow mode.
Duct mode air conditioner (100C):
The duct mode is achieved by providing the indoor unit (105) of the air conditioner with a plurality of mounting ducts (145). The duct of the evaporator (at the outlet (109)), which is configured to carry cold air, is configured with a plurality of branches which facilitate uniform air conditioning of the room (30). Similarly, the inlet (107) of the indoor unit (105) is also provided with a duct (at the inlet (107)) having a plurality of branches to facilitate drawing of hot air. In order to overcome pressure resistance of the duct, the indoor unit (105) is configured to deliver rated air flow with 200 Pascals of pressure head.
In an embodiment, the outdoor unit (115) is provided with exhaust hot air ducting (140) which helps in diverting or elevating hot exhaust air away from the vicinity of the unit to avoid a short cycle with fresh air entering the condenser coil. In order to overcome pressure resistance of the duct, the outdoor unit (115) is configured to deliver rated air flow with 300 Pascals of pressure head.
The duct mode of the air conditioner ensures efficient performance especially in densely populated sites.
Free flow mode:
The free flow mode is achieved by allowing the cold supply air to enter in the room (30) to be conditioned freely, while drawing in the hot air through a false ceiling (05) made in the room (30). The free-flow mode calls for a hot aisle approach. Further, both the outlet (109) and inlet (107) of the indoor unit (105) are provided with metallic grills in order to avoid safety breaching events.
The outdoor unit (115), in this mode, is configured to deliver hot exhaust air in the vicinity of the unit. The free flow mode of operation is operable when sufficient ambient air movement is available. It is necessary to cool down the hot exhaust air before re-entry in case of short cycle.
In an embodiment, for all the embodiment of the present disclosure, the fans (110A, 110B) are electronically commutated fans. In another embodiment, the fans (110A, 110B) are fixed speed AC fans.
In another embodiment, the compressor is a tandem compressor selected from the group consisting of fixed scroll compressors, digital scroll compressors, and inverter compressors.
In an embodiment, the cabinet (111) of the indoor unit (105) is a rigid metallic cabinet (111) configured to withstand vibrations occurring due to the fan (110A). In another embodiment, the cabinet (111) has an insulated sandwiched panel to enable thermal isolation of the cabinet (111) with respect to the surroundings. In yet another embodiment, the cabinet (111) has a leak-proof configuration.
In an embodiment, the drain unit is provided for both the indoor unit (105) and the outdoor unit (115). The drain unit is configured to be in fluid communication with the drain connections of both the units. In an embodiment, the drain unit (150A, 150B) includes a drain pump configured to drain the wastewater from the drain connections.
In an embodiment, a filters may be provided at the inlet (107) of the indoor unit (105) for supplying filtered conditioned air to the room (30).
In an embodiment, a metallic filters are be provided at the inlet (117) of the outdoor unit (115) for supplying filtered ambient air to the condenser coil. These metallic filters are reusable with washing in case of duct clogging.
In another embodiment, the outdoor unit (115) includes an air filter clog sensors configured to raise an alarm when the filter needs maintenance due to duct clogging.
In an embodiment, the air conditioner includes a fire and smoke detector provided on the indoor unit (105), and configured to raise an alarm on detection of fire or smoke.
In an embodiment, all the embodiments of the air conditioner of the present disclosure are configured to be employed in a data centre where at least one data server (10) is present. The unit does not occupy white space, and is easy to be installed according to the requirement of split or packaged type air conditioner without any major changes.
In another embodiment, a plurality of the air conditioners is employed to facilitate conditioning.
The foregoing description of the embodiments has been provided for purposes of illustration and not intended to limit the scope of the present disclosure. Individual components of a particular embodiment are generally not limited to that particular embodiment, but, are interchangeable. Such variations are not to be regarded as a departure from the present disclosure, and all such modifications are considered to be within the scope of the present disclosure.
TECHNICAL ADVANCEMENTS
The present disclosure described hereinabove has several technical advantages including, but not limited to, the realization of an air conditioner which:
• can be installed as a split type air conditioning unit or as a packaged type air conditioning unit; and
• does not occupy white space of a cooling region.
The foregoing disclosure has been described with reference to the accompanying embodiments which do not limit the scope and ambit of the disclosure. The description provided is purely by way of example and illustration.
The embodiments herein and the various features and advantageous details thereof are explained with reference to the non-limiting embodiments 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.
The foregoing description of the specific embodiments so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.
Any discussion of materials, devices, articles or the like that has been included in this specification is solely for the purpose of providing a context for the disclosure. It is not to be taken as an admission that any or all of these matters form a part of the prior art base or were common general knowledge in the field relevant to the disclosure as it existed anywhere before the priority date of this application.
The numerical values mentioned for the various physical parameters, dimensions or quantities are only approximations and it is envisaged that the values higher/lower than the numerical values assigned to the parameters, dimensions or quantities fall within the scope of the disclosure, unless there is a statement in the specification specific to the contrary.
While considerable emphasis has been placed herein on the components and component parts of the preferred embodiments, it will be appreciated that many embodiments can be made and that many changes can be made in the preferred embodiments without departing from the principles of the disclosure. These and other changes in the preferred embodiment as well as other embodiments of the disclosure will be apparent to those skilled in the art from the disclosure herein, whereby it is to be distinctly understood that the foregoing descriptive matter is to be interpreted merely as illustrative of the disclosure and not as a limitation. ,CLAIMS:WE CLAIM:
1. An air conditioner comprising:
• an indoor unit (105) comprising:
o a cabinet (111) having an inlet (107) and an outlet (109) provided on opposite operative sides of said cabinet (111), said cabinet (111) configured to draw hot air from surroundings through said inlet (107);
o a set of evaporator coils provided in said cabinet (111), said evaporator coils configured to allow a low temperature refrigerant to flow therethrough to facilitate exchange of heat between the refrigerant and the hot air to cool the hot air; and
o a plurality of circulation fans (110A) mounted at said outlet (109), said circulation fans (110A) configured to dispel cooled air to the surroundings through said outlet (109); and
• an outdoor unit (115) comprising:
o a housing (120) having an inlet (117) and an outlet (119), said housing (120) configured to receive ambient air therein through said inlet (117);
o a condenser set provided in said housing (120), said condenser set configured to fluidly communicate with said evaporator coils to receive hot refrigerant vapours therefrom, and further configured to cool and condense the refrigerant vapours into liquid refrigerant; and
o a plurality of fans (110B) mounted at said outlet (119), said fans (110B) configured to dispel hot exhaust air through said outlet (119);
wherein, said air conditioner is configured to define a split type air conditioner when said indoor unit (105) and said outdoor unit (115) are positioned at different locations, or a packaged type air conditioner when said indoor unit (105) and the outdoor unit (115) are attached to each other to form an integrated unit configured to be positioned at the same location.
2. The air conditioner as claimed in claim 1, wherein each of said cabinet (111) and said housing (120) include a plurality of lifting lugs configured on an operative top surface of said cabinet (111) and said housing (120), said lifting lugs being configured to facilitate positioning of said cabinet (111) and said housing (120) in a desired configuration of said air conditioner.
3. The air conditioner as claimed in claim 1, which includes at least one conduit (125) configured to enable fluid communication of the refrigerant between said evaporator coils and said condenser coils, wherein the length of said conduit (125) is configured to vary with respect to the desired configuration of said air conditioner.
4. The air conditioner as claimed in claim 1, wherein said cabinet (111) includes a grill provided on said inlet (107) and said outlet (109).
5. The air conditioner as claimed in claim 1, wherein said indoor unit (105) includes a plurality of sensors configured to measure critical parameters selected from the group consisting of temperature, humidity, and performance of the indoor unit (105), and a plurality of electrical terminals, said sensors configured to generate at least one sensed signal corresponding to said critical parameters.
6. The air conditioner as claimed in claim 5, which includes a controller configured to receive said sensed signal, said controller configured to control the flow of air into said conditioner based on said sensed signals.
7. The air conditioner as claimed in claim 1, wherein said indoor unit (105) includes a first duct configured to extend from said inlet (107), said first duct comprising a plurality of first branches configured to draw in hot air.
8. The air conditioner as claimed in claim 7, wherein said indoor unit (105) is configured to draw in hot air at a pressure head ranging between 150 to 300 Pascals.
9. The air conditioner as claimed in claim 1, wherein said indoor unit (105) includes a second duct configured to extend from said outlet (109) of said cabinet (105), said second duct (145) having a plurality of second branches configured to receive the cooled air from said evaporator coils, and further configured to expel the cooled air.
10. The air conditioner as claimed in claim 1, wherein said outdoor unit (105) includes an exhaust hot air ducting (140) configured to extend from said outlet (119), said ducting (140) being configured to expel hot exhaust air from said outdoor unit (105).
11. The air conditioner as claimed in claim 10, wherein said outdoor unit (115) is configured to dispel hot exhaust air at a pressure head ranging between 250 to 400 Pascals.
12. The air conditioner as claimed in claim 1, wherein said fans (110A, 110B) are electronically commutated fans.
13. The air conditioner as claimed in claim 1, wherein said fans (110A, 110B) are fixed speed AC fans.
14. The air conditioner as claimed in claim 1, wherein said condenser set includes a set of condenser coils and a compressor.
15. The air conditioner as claimed in claim 14, wherein said compressor is a tandem compressor selected from the group consisting of fixed scroll compressors, digital scroll compressors, and inverter compressors.
16. The air conditioner as claimed in claim 1, wherein said cabinet (111) is a rigid metallic cabinet (111) configured to withstand vibrations occurring during an operative configuration of said fans (110A).
17. The air conditioner as claimed in claim 16, wherein said cabinet (111) has an insulated sandwiched panel provided thereon, said panel being configured to enable thermal isolation of the cabinet (111) with respect to the surroundings.
18. The air conditioner as claimed in claim 1, wherein each of said indoor unit (105) and said outdoor unit (115) includes a drain unit (150A, 150B) having drain connections and a drain pump configured to drain the wastewater from said indoor unit (105) and said outdoor unit (115).
19. The air conditioner as claimed in claim 1, wherein said indoor unit includes a filter provided on said inlet (107).
20. The air conditioner as claimed in claim 1, wherein said outdoor unit includes a filter provided on said inlet (117).

Dated this 23rd day of December, 2023

_______________________________
MOHAN RAJKUMAR DEWAN, IN/PA – 25
of R.K.DEWAN & CO.
Authorized Agent of Applicant

TO,
THE CONTROLLER OF PATENTS
THE PATENT OFFICE, AT MUMBAI