DESC:FORM 2
THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENTS RULES, 2005
COMPLETE SPECIFICATION
(See section 10, rule 13)
1. TITLE OF THE INVENTION
A RECEIVER DRYER ASSEMBLY FOR AIR CONDITIONING SYSTEM
2. APPLICANT
a) Name : TATA TOYO RADIATOR LTD.
b) Nationality : An Indian Company
c) Address : Survey No 235/245, Phase 1, Hinjewadi Rajiv Gandhi Infotech Park, Hinjewadi, Pune, Maharashtra 411057, India
3. PREAMBLE OF THE DESCRIPTION
PROVISIONAL: The following specification describes the invention COMPLETE: The following specification describes the invention and the manner in which it is to be performed.

FIELD OF THE INVENTION:
The present invention relates to a motor vehicle air conditioning system and more particularly relates to a receiver dryer for a motor vehicle air conditioning system.
BACKGROUND OF THE INVENTION:
A typical vehicle air conditioning system consists of several components, including a compressor, condenser, receiver dryer, expansion valve, and evaporator. These components work together with a refrigerant or coolant, which circulates through the system and undergoes repeated phase changes from liquid to gas and back to liquid.
When the vehicle's air conditioning system is activated, pressurized liquid refrigerant flows from the receiver dryer to the expansion valve. As the refrigerant reaches a certain stage and expands, it transforms into a gas, resulting in a drop in temperature. This cool gas then enters the evaporator, where it absorbs heat from the air flowing into the vehicle's passenger compartment. This process causes the refrigerant to boil.
The low-pressure refrigerant vapor then enters the compressor, which is driven by a drive belt connected to the engine's crankshaft. The compressor compresses the refrigerant vapor and pumps it as a high-pressure gas to the condenser. Typically located in front of the vehicle's radiator, the condenser consists of numerous cooling fins surrounding parallel tubes. As the refrigerant flows through these tubes, the air passing over the condenser's fins removes heat from the refrigerant, causing it to change from a gas to a liquid state.
The liquid refrigerant then moves into the receiver dryer. The primary purpose of the receiver dryer is to separate any remaining gas from the liquid refrigerant. Furthermore, the receiver dryer plays a crucial role in removing moisture from the refrigerant. It contains a chemical desiccant that effectively eliminates water from the refrigerant to prevent freezing within the expansion section of the system.
The receiver dryer is also equipped with a filter to effectively remove dirt from the liquid refrigerant. In certain vehicle air conditioning systems, there is an additional component called the sub-cooled section, positioned between the receiver dryer and the expansion valve. This sub-cooled section serves to provide extra cooling for the condensed refrigerant, thereby enhancing system efficiency.
Given the multiple functions it performs, the structure of the receiver dryer is typically intricate and often incorporates a removable insert. This allows for the periodic replacement of the desiccant and/or the filter element. It's worth noting that traditional receiver dryers for air conditioning systems utilize thread fittings. However, these thread fittings can exert excessive pressure on O-rings, leading to potential damage. The damaged O-rings can compromise the sealing feature of the receiver dryer.
Therefore, there is a need of a fitting arrangement/design that overcomes the drawbacks of the prior art. There is also a need of a removable receiver dryer for easy replacement of desiccant bags and/or the filter element.
OBJECT OF THE INVENTION:
An object of the present invention is to provide a removable receiver dryer for air conditioning systems.
Another object of the present invention is to provide a snap ring locked snap fitted filter receiver dryer for air conditioning systems.
Yet, another object of the present invention is to increase the life of sealing means and O-Rings and provide an easy fitting arrangement for filter assembly and desiccant bag in a receiver dryer for air conditioning systems that helps in easy replacement.
Yet another object of the present invention is to provide a less complex receiver dryer for air conditioning systems with access to replace filter and desiccant bag in the field.
BRIEF DESCRIPTION OF THE DRAWINGS:
The objects and advantages of the present invention will become apparent when the disclosure is read in conjunction with the following figures, wherein
Figure 1a&1b illustrates a schematic representation of a receiver dryer assembly equipped with a snap ring locked push fitted filter, coupled to a condenser in air conditioning system in accordance with an embodiment of the present invention;
Figure 2 illustrates an exploded perspective view of a receiver dryer equipped with snap ring locked push fitted filter in accordance with an embodiment of the present invention;
Figure 3a illustrates a sectional view of the snap ring locked push fitted filter receiver dryer of Figure 2 in an assembled condition in accordance with an embodiment of the present invention;
Figure 3b&3c illustrate another sectional views of the snap ring locked push fitted filter receiver dryer of Figure 2 in an assembled condition in accordance with an embodiment of the present invention; and
Figure 4 is an enlarged fragmental sectional view of a snap ring locked push fitted filter receiver dryer of Figure 3 in an assembled condition in accordance with an embodiment of the present invention.
DETAILED DESCRIPTION OF THE INVENTION
The foregoing objects of the invention are accomplished and the problems and shortcomings associated with prior art techniques and approaches are overcome by the present invention described in the present embodiments.
The vehicle air conditioning system normally includes a condenser unit, a compressor, a receiver dryer, an expansion valve, an evaporator, a sub-cooled section, and a refrigerant/ coolant. Currently, in the air conditioning system, a condenser unit is mounted in front of a vehicle's radiator and includes a large number of cooling fins surrounding parallel tubes. Further, a receiver dryer is integrated with the condenser unit. Present invention provides an assembly of receiver dryer provided with a snap ring locked push fitted filter at the bottom thereof. In the present invention, a sub-cooled section located between a receiver dryer and an expansion valve allows flow of fluid refrigerant between the receiver dryer and the condenser unit.
In the following description, for the purpose of explanation, specific details are set forth in order to provide an understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these details. One skilled in the art will recognize that embodiments of the present invention, some of which are described below, may be incorporated into a number of systems.
Furthermore, connections between components and/or modules within the figures are not intended to be limited to direct connections. Rather, these components and modules may be modified, re-formatted or otherwise changed by intermediary components and modules. Throughout this application, with respect to all reasonable derivatives of such terms, and unless otherwise specified (and/or unless the particular context clearly dictates otherwise), each usage of:
“a” or “an” is meant to read as “at least one.”
“the” is meant to be read as “the at least one.”
References in the present invention to “one embodiment” or “an embodiment” mean that a particular feature, structure, characteristic, or function described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one of the embodiment” in various places in the specification are not necessarily all referring to the same embodiment.
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.
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.
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 invention 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).
While embodiments of the present invention have been illustrated and described, it will be clear that the invention is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the scope of the invention, as described in the claim.
The present invention is illustrated with reference to the accompanying drawings, throughout which reference numbers indicate corresponding parts in the various figures. These reference numbers are shown in the bracket in the following description and in the table below.
Table:
Component Name Component Number Component Name Component Number
Condenser unit 1 Filter 18
Condenser inlet 2 Filter housing 19
Condenser outlet 3 Circlip 20
Condenser body 7 O-ring 21
Sub-cooled/super cooled section 8 External wall in the housing 22
receiver dryer housing 9 Groove 25
First end of the housing 9a Filter plug assembly 27
Second end of the housing 9b Flange 28
First chamber in the housing 9c Upper sealing member 29a
Second chamber in the housing 9d Lower sealing member 29b
Desiccant bag 10 First plate 31
Receiver dryer inlet 11 First capping member 32
Receiver dryer outlet 12 Circular wall of second plate 33
Retaining member 13 Second plate 34
Inlet aperture of receiver dryer 14 Second capping member 35
Outlet aperture of receiver dryer 15 Inlet zone of receiver dryer housing 36
Connector 16 Receiver dryer assembly 100
Filter assembly 17 Air conditioning system 200
The present invention discloses a receiver dryer assembly (100) for an air conditioning system (200) of a motor vehicle. The preferred embodiment of the present invention, the receiver dryer assembly (100) contains a snap ring locked push fitted filter and is used with a condenser unit (1) in an air conditioning system (200) of a motor vehicle.
The condenser unit (1) has an upper condenser section and a lower cooling section. In the embodiment, the condenser unit (1) is fluidly coupled to a receiver dryer assembly (100) an air conditioning system (200). The receiver dryer assembly (100) having a snap ring locked push fitted filter at one side and is illustrated in accordance with an embodiment of the present invention.
The receiver dryer assembly (100) includes a receiver dryer housing (9) (the housing (9)” hereinafter), an inlet (11) for receiving a fluid refrigerant (“refrigerant” hereinafter) from the condenser unit (1), a filter plug assembly (27) configured to remove dirt from the liquid refrigerant received from the condenser unit (1), and a removable chemical desiccant bag (10) configured to absorb the water content in the refrigerant secured inside a receiver dryer housing (9). The housing (9) has a first end (9a), a second end (9b), and an external wall (22) that extends between the first end and the second end (9a, 9b). Inside the housing (9) is divided into two sections by a partition plate (not shown) to form a first chamber (9c) and a second chamber (9d) below the first chamber (9c). The first chamber (9c) is configured with an inlet (11) for the reception of condensed refrigerant from the condenser section of the condenser unit (1) and the second chamber (9d) is provided with an outlet (12) to allow the passage of a dried condensed refrigerant to the lower cooling section of the condenser unit (1).
Referring to figure 1, in an embodiment of the present invention, a receiver dryer assembly (100) for an air conditioning system (200) in fluid communication with a condenser unit (1) is disclosed in accordance with the present invention. The receiver dryer (100) comprises an elongated cylindrical housing (9) divided into a first chamber and a second chamber (9c, 9d), an inlet (11), an outlet (12), a filter plug assembly (27) configured with a filter (18), a desiccant bag (10) and a retaining member (13) for locking the filter plug assembly with the housing (9). The housing (9) includes a first end (9a), a second end (9b), and an external wall (22) that extends between the first end and the second end (9a,9b). The first chamber and a second chamber (9c,9d) are separated by a partition plate inside the housing (9). An inlet (11) positioned in the first chamber (9c) is configured to receive condensed refrigerant from the lower condenser section of the condenser unit (1). Further, an outlet (12) is positioned in a second chamber (9d) of the housing (9) configured to provide dried condensed refrigerant to the lower cooling section of the condenser unit (1).
In an embodiment of the present invention, inside the housing (9), the partition plate divides the first chamber (9c) from the second chamber (9d) and forms a boundary therebetween, wherein the first chamber (9c) is formed above the second chamber (9d).
In an embodiment of the present invention the first chamber (9c) is containing a desiccant bag (10) carrying desiccant material for drying the condensed refrigerant received via the inlet (11) and the second chamber (9d) is containing a filter plug assembly accommodating a filter (18) for filtering solid particles in the dried condensed refrigerant before delivered to the outlet (12).
In an embodiment of the present invention, a spacing defines the housing (9) to allow the flow of condensed refrigerant via an inlet aperture (14) which is in direct fluid communication with the first chamber (9c) for collecting dried condensed refrigerant and an outlet aperture (15) in direct fluid communication with the second chamber (9d) for conveying the dried condensed refrigerant downwards past the partition plate towards the lower section of the condenser unit (1).
In an embodiment of the present invention, the second end (9b) of the housing (9) has a removable capping member (35) for gaining access to the second chamber (9d) in order to replace the filter (18), and the partition plate is configured as a removable partition plate in the housing (9) in order to replace the desiccant. In the embodiment, the first chamber (9c) provided with a desiccant bag (10) reduces the moisture content within the condensed refrigerant received by the inlet (11). In the embodiment, the second chamber (9d) contains a filter (18) for filtering out hard particles contained in the dried condensed refrigerant flowing towards the outlet (12).
Referring to Figure 1b, a receiver dryer assembly (100) for an air conditioner according to the present invention is removably coupled to a condenser unit (1) to store a refrigerant and to remove moisture and foreign substances contained in the refrigerant.
The condenser unit (1) includes an inlet (2), an outlet (3), and a main body (7) configured with a series of interconnected tubes (7a) therein. The refrigerant enters into the condenser unit (1) through the inlet (2), passing through the series of interconnected tubes (7a) (“the tubes (7a)” hereinafter) in the main body (7) and flows out of the condenser unit (1) via the outlet (3). The tubes (7a) in the condenser unit (1) are configured to allow the passage of the refrigerant and are exposed to the flow of air around the tubes (7a). This helps to dissipate the temperature of the refrigerant by heat transfer between the tubes (7a) and the air. The condenser unit (1) further comprises a plurality of metal fins (not shown) that aid in the cooling process. Further, the liquid refrigerant flows out of the condenser unit (1) through the outlet (3) and directly into the receiver dryer (100).
In an exemplary embodiment of the present invention, the condenser unit (1) may be a multi-pass-type heat exchanger made of aluminium tube and aluminum fin construction.
The condenser unit (1) is coupled to the receiver dryer (100) separates the gas dissolved in the liquid refrigerant and also removes moisture therefrom. The water content in the refrigerant is removed by the desiccant bag (10) in the first chamber (9c) of the housing (9) therein and likewise, dirt particles from the liquid refrigerant are removed by the filter (18) in the second chamber (9d) in the housing (9). The dried and filtered, refrigerant is passed out of the receiver dryer (100) through an inlet of a sub-cooled/super-cooled section (8). The sub-cooled/super-cooled section (8) provides additional cooling for the refrigerant to improve the operation and efficiency of the air conditioning system. Further, the refrigerant is directed to flow down through the desiccant bag (10) in the receiver dryer assembly (100) via the condenser unit (1). The refrigerant directs to exit from the receiver dryer assembly (100) at/or near the bottom thereof and exit through the outlet (12).
In a preferred embodiment of the invention, the sub-cooled/super-cooled section (8) is located below the main body (7) of the condenser unit (1) of the air conditioning system (100).
Referring to Figure 2, the receiver dryer assembly (100) in accordance with an embodiment of the present invention is shown. The receiver dryer assembly (100) includes the housing (9) formed from a hollow elongated tubular member with an external wall (22) that extends from the first end (9a) to the second end (9b). In a preferred embodiment, the housing (9) has a circular multi-cross-sectional shape. The housing (9) has an inlet (11) and an outlet (12) of suitable dimension to join the condenser unit (1) thereto. The receiver dryer assembly (100) is attached to the inlet of the sub-cooled section (8) of the condenser unit (1). An outlet aperture (15) is located proximate to the lower end of the housing (9) such that the aperture (15) opens into the outlet (12).
Referring to Figure 3a-3c, a sectional view of the snap ring locked push-fitted filter receiver dryer (100) illustrated in Figure 2 in an assembled state is shown. The housing (9) of the receiver dryer (100) is divided into two sections along its length to form the first chamber (9c) and the second chamber (9d) separated by a partition plate. The first chamber (9c) includes an outlet zone or a chamber located at the upper part of the housing (9). The second chamber (9d) includes an outlet zone or chamber located at a lower end (21) of the housing (9). The outlet aperture (15) is located proximate to the lower end of the housing (9) such that the aperture (15) opens into the outlet (12).
In one of the exemplary embodiments of the present invention, the upper end of the first chamber (9c) or the first end of the housing (9a) and the lower end of the second chamber or the second end of the housing (9b), each configured with a filter plug assembly (27).
In the embodiment, the filter plug assembly (27) comprises a first capping member (32) a second capping member (35) and a filter housing (19) extending between the first (32) and second capping members (35). The first capping member (32) comprises a first plate (31) in a circular disc-shape and a flange (28). The flange (28) extends around the periphery of the first plate (31) and projects perpendicularly therefrom and the outer surface of the flange (28) is provided with an encircling groove or channel (25) that is sized to house an O-ring (21). The O-ring (21) is configured such that a part of the O-ring (21) projects from the surface of the flange (28). The O-ring (21) forms an upper sealing means for the filter plug assembly (27). The first end of the housing (9a) further comprises a second plate (34) having a circular wall (33) and projects perpendicular to the second plate (34), wherein the circular wall (33) stops the filter to go further deep into the housing in the push direction.
In the embodiment, the capping members (32) and (35) are arranged at opposing ends such that the first plate (31) and the second plate (34) lie parallel but spaced apart from each other, and the flange (28) and the wall (33) extend in opposite directions and away from each other.
Further, the filter (18) is sandwiched between the first plate (31) and the second plate (34). The filter type or construction is of general type and is commonly used in the air conditioning system. In one of the embodiments of the invention, a filter housing (19) is used to support the filter (18). The filter housing (19) is in the form of but not limited to a frame, a cage, or similar that supports and retains the filter (18) between the first and the second plates (31, 34).
In an embodiment of the present invention, the diameter of the O-rings (21), used in the housing (9) for all the places are the same.
Specifically, the outer diameter of the first capping member (32) is approximately equal to the inner diameter of the cylindrical external wall (22) of the housing (9). Thus the design and dimensions particularly the diameter of the external wall (22) and the capping member (32) help in the snap fitting of the filter plug assembly (27) into the housing (9).
In an embodiment, the filter plug assembly (27) is pushed into the second end (9b) of the housing (9), thus, the first capping member (32) is fluidly sealed against the inner surface of the external wall (22) of the housing (9) by means of an upper sealing member (29a). Similarly, a lower sealing member (29b) configured with the second capping member (35) fluidly seals against the inner surface of the external wall (22) of the housing (9).
Upon fully inserting the filter plug assembly (27) into the housing (9), the filter plug assembly (27) gets locked through a retaining member (13). The retaining member (13) is a snap ring configured on the edge of the flange (28). The snap ring (13) is outwardly biased by configuration so that it can be pushed against the inner surface of the external wall (22) of the housing (9).
In one of the embodiments, it is preferred to provide a groove or recess in the surface of the external wall (22) such that a portion of the retaining means (13) such as a snap ring locates in the groove. In use, before the filter plug assembly (27) has been inserted, the first chamber (9c) is filled with a desiccant bag (10). As the top of the first chamber (9c) is open, the desiccant bag (10) therein may at least partially cover the inlet zone (36) of the housing (9) and the desiccant bag (10) is inserted into the first chamber (9c), the filter plug assembly (27) can be inserted.
In one of the embodiments of the present invention, the receiver dryer (100) is assembled with the condenser unit (1) without the filter plug assembly (27) and desiccant bag (10) inside. This may be done during manufacturing stage, where brazing of the receiver dryer (100) with the condenser unit (1) occurred in a furnace, the desiccant bag (10) is loaded into the receiver dryer (100) in a later stage. Further, the filter plug assembly (27) made of plastic was assembled.
In one of the embodiments of the present invention, the receiver dryer (100) is assembled with the condenser unit (1) without the filter plug assembly (27) and desiccant bag (10) inside. This may be done during the manufacturing stage, where brazing of the receiver dryer (100) with the condenser unit (1) occurred in a furnace, and the desiccant bag (10) is loaded into the receiver dryer (100) in a later stage. Further, the filter plug assembly (27) made of plastic was assembled.
During the operation, the refrigerant flows from a lower portion of the condenser unit (1) into the inlet aperture (14) of the receiver dryer (100). In the next step, the refrigerant comes into contact with at least a portion of the desiccant bag (10) and the desiccant is filled therein within the first chamber (9c) via the inlet (11). The desiccant removes moisture content from the refrigerant. Further, the liquid refrigerant entered into the first chamber (9c) is forced to flow to the second chamber (9d) due to the fluid pressure. The filter (18) in the second chamber (9d) removes any debris in the refrigerant before flowing out of the housing (9) through the outlet (12) and into the sub-cooled section (8) of the condenser unit (1). The first chamber (9c) of the housing (9) holds the excess refrigerant and hence the first chamber (9c) is filled with the refrigerant in addition to the desiccant material.
In one of the exemplary embodiments of the present invention, the filter plug assembly (27) may be separable such that each of the first capping members (32), filter housing (19) and second capping members (35) can be separated. This allows the first capping member (32) and the filter housing (19) to be withdrawn from the receiver dryer housing (9) when it is necessary to replace or clean the filter (18).
In an embodiment, the housing (9) containing the first chamber (9c) is in direct fluid communication with the second chamber (9d) configured with a filter plug assembly (27) configured to cooperate with a pair of removable capping members (32, 35) allowing external access to the second chamber (9d) for the replacement of the filter (18).
The removable snap ring (13) fitted on the exterior end of the receiver dryer allows the filter assembly (27) to be removed and replaced easily during regular servicing of the air conditioning system, without detaching the receiver dryer housing (9) from the condenser unit (1).
ADVANTAGES OF THE INVENTION:
1. Snap ring locked push fitted filter for receiver dryer (100) of the present invention reduces the pressure on O-Rings and extends the life of O-Rings.
2. The receiver dryer assembly (100) of the present invention provides better sealing for long period by saving the life of the O-Rings.
3. The receiver dryer assembly (100) of the present invention allows the filter plug assembly (27) to be removed and replaced easily during regular servicing of the air conditioning system, without detaching the receiver dryer assembly from the condenser unit (1).
The foregoing descriptions of specific embodiments of the present invention have been presented for purposes of illustration and description. They are not intended to be exhaustive or to limit the present invention to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the present invention and its practical application, and to thereby enable others skilled in the art to best utilize the present invention and various embodiments with various modifications as are suited to the particular use contemplated. It is understood that various omissions and substitutions of equivalents are contemplated as circumstances may suggest or render expedient, but such omissions and substitutions are intended to cover the application or implementation without departing from the scope of the claims of the present invention.
Further, while one or more operations have been described as being performed by or otherwise related to certain components, modules, devices or entities, the operations may be performed by or otherwise related to any component, module, device or entity.
Further, the operations need not be performed in the disclosed order, although in some examples, an order may be preferred. Also, not all functions need to be performed to achieve the desired advantages of the disclosed system and method, and therefore not all functions are required.
While select examples of the disclosed mechanical assembly have been described, alterations and permutations of these examples will be apparent to those of ordinary skill in the art. Other changes, substitutions, and alterations are also possible without departing from the disclosed assembly in its broader aspects.
,CLAIMS:We claim:
1. A receiver dryer assembly (100) for an air conditioning system (200), wherein the receiver dryer assembly (100) is in fluid communication with a condenser unit (1) in the air conditioning system (200) of a motor vehicle, the receiver dryer assembly (100) comprising:
a receiver dryer housing (9), the receiver dryer housing (9) includes an external wall (22) that extends between a first end (9a), a second end (9b) thereof, and internally divided into two sections by a partition plate inside to form,
a first chamber (9c) configured with an inlet (11) for the reception of condensed refrigerant from the condenser unit (1), the first chamber (9c) is secured with a desiccant bag (10) carrying desiccant material therein for drying the condensed refrigerant received via the inlet (11), and
a second chamber (9d) configured beside the first chamber (9c), the second chamber (9d) provided with an outlet (12) to allow the passage of a dried condensed refrigerant to the cooling section of the condenser unit (1), the second chamber (9d) secured with a filter plug assembly (27) containing a filter (18) therein,
wherein the housing (9) containing the first chamber (9c) is in direct fluid communication with the second chamber (9d) configured to cooperate with a pair of removable capping members (32, 35) allowing external access to the second chamber (9d) for the replacement of the filter (18);
wherein the housing receives refrigerant from the condenser unit (1), removes moisture content therein by subjecting to contact with the desiccant bag (10), conveys the dried condensed refrigerant downwards past the partition plate to the second chamber (9d) for the removal of the foreign substances contained therein by the filter (18) and allows the refrigerant to flow towards a cooling section of the condenser unit (1).
2. The receiver dryer assembly (100) as claimed in claim 1, wherein the housing (9) containing the partition plate divides the first chamber (9c) from the second chamber (9d) and forms a boundary therebetween, wherein the first chamber (9c) is formed above the second chamber (9d).
3. The receiver dryer assembly (100) as claimed in claim 1, wherein the housing (9) has a circular multi cross-sectional shape.
4. The receiver dryer assembly (100) as claimed in claim 1, wherein the upper end of the first chamber (9c) and the lower end of the second chamber (9d) each configured with a filter plug assembly (27) comprises of a first capping member (32) a second capping member (35) and a filter housing (19) extending between the first (32) and second capping members (35).
5. The receiver dryer assembly (100) as claimed in claim 4, wherein the first capping member (32) comprises
a first plate (31) in circular disc-shape;
a flange (28) extends around the periphery of the first plate (31), wherein the flange projects perpendicularly from the first plate (31);
a retaining member (13) configured on an edge of the flange (28), wherein the retaining member (13) is outwardly biased by configuration so as to be pushed against the inner surface of the external wall (22) of the housing (9) during insertion of the filter plug assembly into the housing (9), and
an encircling groove (25) on outer surface of the flange (28), wherein the groove (25) is configured to cooperate with an O-ring (21) that a part of the O-ring (11) projects from the surface of the flange (28) and forms an upper sealing means for the filter plug assembly (27).
6. The receiver dryer assembly (100) as claimed in claim 1, wherein the first end of the housing (9a) further comprises a second plate (34) having a circular wall (33) that projects perpendicular to the second plate (34) wherein the circular wall (33) has a diameter larger than the second plate (34).
7. The receiver dryer assembly (100) as claimed in claim 4&5, wherein the first capping member (32) and the second capping member (35) are arranged at opposing ends of the housing (9) such that the first plate (31) and the second plate (34) lie parallel but spaced apart from each other, and the flange (28) and the wall (33) extend in opposite directions and away from each other.
8. The receiver dryer assembly (100) as claimed in claim 7, wherein the first plate (31) and the second plate (34) are configured to receive the filter (18) therebetween.
9. The receiver dryer assembly (100) as claimed in claim 4, wherein the first capping member (32) is approximately equal to the inner diameter of the external wall (22) of the housing (9), such that the dimension of the diameter of the external wall (22) and the capping member (32) allows snap fitting of filter plug assembly (27) into the housing (9).
10. The receiver dryer assembly (100) as claimed in claim 4, wherein the filter plug assembly (27) is pushed into the second end (9b) of the housing (9) to get locked through the retaining member (13).
11. The receiver dryer assembly (100) as claimed in claim 4, wherein the first capping member (32) is fluidly sealed against the inner surface of the external wall (22) by means of an upper sealing member (29a) and the second capping member (35) is fluidly sealed against the inner surface of the external wall (22).
12. The receiver dryer assembly (100) as claimed in claim 4, wherein the retaining member (13) is located in a groove/recess in the surface of the external wall (22) of the housing upon the filter plug assembly (27) is inserted into the housing (9).
13. The receiver dryer assembly (100) as claimed in claim 1, wherein the partition plate is configured as a removable partition plate inside the housing (9) that allows external access for replacement of the desiccant bag (10) in the first chamber (9c) without disturbing the other member of the housing (9).
Dated this on 30th day of May 2023

Ragitha. K
(Agent for Applicant)
IN-PA/2832