Receiver dryer, method of manufacturing receiver dryer and air-conditioning system

Patent metadata

Field	Value
Publication number	US-9759463-B2
Application number	US-201314380707-A
Country	US
Kind code	B2
Filing date	Feb 4, 2013
Priority date	Feb 27, 2012
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

A receiver dryer includes a first body and a second body, one end of the second body away from the first body defining first and second connecting ports. The receiver dryer includes a filter cartridge including a first mating portion, a second mating portion, and a filter part at a middle portion; the first mating portion fits with an inner wall of the second body, one space allowing refrigerant to flow is formed between the filter part and the inner wall of the second body, the second mating portion is connected to the second connecting port, the space between the filter part and the inner wall of the second body communicates with the first connecting port, an inside of the filter part communicates with the second connecting port via the second mating portion, and refrigerant is filtered at least once when flowing between the first and second connecting ports.

First claim

The invention claimed is:

1. A receiver dryer, comprising a first body and a second body, one end of the second body facing the first body forming an open structure, and another end of the second body away from the first body defining a first connecting port and a second connecting port, wherein, the receiver dryer further comprises a filter cartridge, the filter cartridge comprises a first mating portion, a second mating portion, and a filter part at a middle portion thereof; the first mating portion fits with an inner wall of the second body, one space allowing refrigerant to flow is formed between the filter part and the inner wall of the second body, another space allowing refrigerant to flow is formed between the second mating portion and a portion of the second body where the first connecting port is arranged, the second mating portion fits with an inner wall of the second connecting port, the space between the filter part and the inner wall of the second body is in communication with the first connecting port, an inside of the filter part is in communication with the second connecting port via the second mating portion, and the refrigerant is filtered at least once during a process of flowing between the first connecting port and the second connecting port; and
wherein, the first body has a barrel-shaped structure with an opening facing the second body, a desiccant bag is provided in a cavity formed by the first body and the second body, and the desiccant bag has a molecular sieve received therein; a retaining member is provided between the filter cartridge and the desiccant bag, and the retaining member is fixed by the second body or the first mating portion of the filter cartridge; and the retaining member is provided with a plurality of through holes to ensure the flow of the refrigerant.

2. The receiver dryer according to claim 1 , wherein, at least a part of the second mating portion is of a tubular shape and extends into the second connecting port, and an outer surface of the second mating portion is provided with an annular sealing protrusion at the part fitting with an inner wall of the second connecting port, and the annular sealing protrusion closely fits with the inner wall of the second connecting port to prevent the refrigerant from passing through a space between an outer portion of the second mating portion and the second connecting port.

3. The receiver dryer according to claim 2 , wherein, the filter part of the filter cartridge comprises a bracket and a screen fixedly provided on the bracket, the bracket comprises a first rib arranged in an axial direction thereof and a second rib arranged in a circumferential direction thereof, and the screen is fixed by the first rib and/or the second rib; and the screen of the filter part is a nylon screen, the bracket is made of a thermoplastic material, and the screen and the bracket are integrated by injection molding.

4. The receiver dryer according to claim 1 , wherein, at least a part of an outer wall of the first mating portion is in close fit with the inner wall of the second body, or the outer wall of the first mating portion is in close fit with the inner wall of the second body via an annular sealing member.

5. The receiver dryer according to claim 4 , wherein, the second body comprises a first inner wall part fitting with the first mating portion of the filter cartridge and a second inner wall part close to the first body, an inner diameter of the first inner wall part is smaller than an inner diameter of the second inner wall part, a smooth transition is formed between the first inner wall part and the second inner wall part, and the outer wall of the first mating portion is in an annular close fit with the first inner wall part to prevent the refrigerant from passing through a space between the outer wall of the first mating portion and the inner wall of the second body.

6. The receiver dryer according to claim 4 , wherein, the outer wall of the first mating portion is not entirely in an interference fit with the inner wall of the second body, and the first mating portion is provided with a plurality of positioning flanges in a circumferential direction thereof, the filter cartridge is fixed by an interference fit formed between the positioning flanges and the inner wall of the second body, a clearance is provided between other portions of the outer wall of the first mating portion and the inner wall of the second body, a filter cap is fixedly provided on the first mating portion of the receiver dryer, and the filter cap has a base body and a screen fixed by the base body.

7. The receiver dryer according to claim 6 , wherein, the second mating portion is also provided with a plurality of positioning flanges in a circumferential direction, and a space or a clearance allowing the refrigerant to flow is provided between other portions of an outer wall of the second mating portion and the inner wall of the second body; and a space allowing the refrigerant to flow is provided between the second mating portion and a portion of the second body where the first connecting port is arranged.

8. The receiver dryer according to claim 4 , wherein, a clearance is provided between the first mating portion of the filter cartridge and the inner wall of the second body, an elastic sealing member is provided between the first mating portion of the filter cartridge and the inner wall of the second body, the first mating portion is provided with a groove for accommodating the sealing member, and an annular elastic sealing member is provided in the groove to form a sealing between the first mating portion and the inner wall of the second body, thereby preventing the refrigerant from passing through a space between the outer wall of the first mating portion and the inner wall of the second body.

9. The receiver dryer according to claim 4 , wherein, the filter part of the filter cartridge comprises a bracket and a screen fixedly provided on the bracket, the bracket comprises a first rib arranged in an axial direction thereof and a second rib arranged in a circumferential direction thereof, and the screen is fixed by the first rib and/or the second rib; and the screen of the filter part is a nylon screen, the bracket is made of a thermoplastic material, and the screen and the bracket are integrated by injection molding.

10. The receiver dryer according to claim 1 , wherein, the filter part of the filter cartridge comprises a bracket and a screen fixedly provided on the bracket, the bracket comprises a first rib arranged in an axial direction thereof and a second rib arranged in a circumferential direction thereof, and the screen is fixed by the first rib and/or the second rib.

11. The receiver dryer according to claim 10 , wherein, the screen of the filter part is a nylon screen, the bracket is made of thermoplastic material, and the screen and the bracket are integrated by injection molding.

12. The receiver dryer according to claim 11 , wherein, the filter cartridge is made by injection molding of thermoplastic material, and the screen is fixed by plastic; the first mating portion is provided with at least one annular sealing sheet protruding outwards from a base body thereof, the annular sealing sheet is formed integrally with the filter cartridge by injection molding, and the first mating portion is further provided with a positioning portion; the annular sealing sheet is larger than other portions of the first mating portion, and the annular sealing sheet is in contact with the inner wall of the second body.

13. The receiver dryer according to claim 11 , wherein, both the second mating portion and the first mating portion of the f

Assignees

• Zhejiang Sanhua Automotive Components Co Ltd

Inventors

• Wang Lixin
• Wang Zhengwei

Classifications

• B23P15/26

  heat exchangers {or the like (making heat exchangers by methods covered by other subclasses B21D53/02)} · CPC title

• F25B2400/162

  characterised by the plug or stop · CPC title

• Y10T29/49394

  Accumulator making · CPC title

• F25B43/003 Primary

  Filters · CPC title

• B01D15/00

  Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor · CPC title