Liquid receiver assembly structure and compressor

Abstract

This utility model relates to the field of compressor technology, and more particularly to a liquid receiver assembly structure and a compressor including the liquid receiver assembly structure. In this liquid receiver assembly structure, the air inlet on the cylinder includes large and small diameter sections connected sequentially along a direction close to the cylinder center, with decreasing inner diameters. A first stepped surface is formed between the large and small diameter sections. The outlet end of the liquid receiver's outlet pipe is inserted into the air inlet through a through hole in the housing. The outlet pipe is welded to the housing. The outlet end of the outlet pipe includes large and small diameter pipe sections connected sequentially along a direction close to the outlet end of the outlet pipe, with decreasing outer diameters. A second stepped surface, spaced apart from the first stepped surface, is formed on the outer circumferential surface of the outlet pipe between the large and small diameter sections. A sealing ring is housed in the space between the second stepped surface and the first stepped surface and is clamped between the small diameter pipe section and the large diameter section. This design reduces leakage, lowers noise, reduces assembly parts, simplifies installation procedures, and improves stability.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a liquid receiver assembly structure and a compressor including the liquid receiver assembly structure. Background Technology

[0002] The compressor housing contains a cylinder, and the cylinder's air inlet is connected to the liquid receiver's outlet pipe. After the refrigerant absorbs heat and vaporizes in the evaporator, it undergoes gas-liquid separation in the liquid receiver, and then the low-temperature, low-pressure refrigerant gas is sent into the cylinder for compression through the liquid receiver's outlet pipe.

[0003] In the prior art, the compressor receiver assembly structure is as follows: Figure 1 As shown, the cylinder wall of cylinder 01 is provided with an air inlet hole 010, and the housing 02 is provided with a through hole 020 at a position corresponding to the air inlet hole 010. One end of the housing seat ring 03 is connected to the through hole 020 of the housing 02. One end of the air inlet connecting pipe 04 is inserted into the housing seat ring 03, and the other end of the air inlet connecting pipe 04 extends into the air inlet hole 010 of cylinder 01. The outlet pipe 05 of the liquid reservoir is inserted into the inner side of the air inlet connecting pipe 04. To achieve a seal, the air inlet connecting pipe 04 and the air inlet hole 010 of cylinder 01 are interference-fitted, and the two are rigidly connected. This connection method can lead to minor leaks under high pressure, affecting the overall performance of the compressor. Furthermore, the force required to press the inlet pipe 04 into the inlet port 010 of the cylinder 01 is significant, potentially causing cylinder 01 deformation and displacement, thus impacting compressor quality. Additionally, the rigid connection between the cylinder 01 and the inlet pipe 04 means that noise and vibration generated during cylinder 01 operation are directly transmitted to the receiver, increasing compressor noise. Moreover, to ensure compressor airtightness, the housing ring 03 and the through hole 020 of the housing 02 are sealed by pressure welding, while the housing ring 03, inlet pipe 04, and outlet pipe 05 are sealed by brazing. This process involves numerous components, requires multiple welding operations, is complex, and incurs high processing costs. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is to provide a liquid reservoir assembly structure that can reduce leakage, reduce noise, reduce assembly parts, simplify installation procedures, and improve stability.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model provides a liquid reservoir assembly structure, including: an air inlet on a cylinder, the air inlet comprising a large-diameter section and a small-diameter section connected sequentially along a direction close to the center of the cylinder and having decreasing inner diameters, with a first stepped surface formed between the large-diameter section and the small-diameter section; a through hole on a housing housing that accommodates the cylinder at a position corresponding to the air inlet; an air outlet pipe of the liquid reservoir, the outlet end of the air outlet pipe being inserted into the air inlet through the through hole, the air outlet pipe being welded to the housing, the outlet end of the air outlet pipe comprising a large-diameter pipe section and a small-diameter pipe section connected sequentially along a direction close to the outlet end of the air outlet pipe and having decreasing outer diameters, with a second stepped surface formed on the outer circumferential surface of the air outlet pipe between the large-diameter section and the small-diameter pipe section, spaced apart from the first stepped surface; and a sealing ring, housed in the space between the second stepped surface and the first stepped surface and clamped between the small-diameter pipe section and the large-diameter section.

[0007] Preferably, the distance between the second step surface and the first step surface is greater than the thickness of the sealing ring.

[0008] Preferably, a limiting portion protruding outward is formed on the outer peripheral surface of the vent pipe near the outlet end of the vent pipe. The limiting portion abuts against the outer side of the housing and forms a gap between the second step surface and the first step surface.

[0009] Preferably, the limiting part is welded to the shell.

[0010] Preferably, the air outlet pipe and the air inlet are fitted with a clearance.

[0011] Preferably, the distance between the sealing ring and the welding position between the vent pipe and the housing is not less than 20mm.

[0012] Preferably, the sealing ring is made of ethylene propylene rubber, hydrogenated nitrile rubber, or fluororubber.

[0013] Preferably, the sealing ring and the vent pipe are independent separate parts or integrally formed parts.

[0014] Preferably, the vent pipe is connected to the housing by high-frequency welding or laser welding.

[0015] This utility model also provides a compressor, including the liquid receiver assembly structure described above.

[0016] Compared with the prior art, this utility model has significant progress:

[0017] The liquid reservoir assembly structure of this utility model allows the outlet pipe of the liquid reservoir to be directly inserted into the inlet port of the cylinder through a through hole on the shell, and the outlet pipe to be welded to the shell. This eliminates the need for the shell seat ring and the inlet connecting pipe, reducing the number of assembly parts, welding components, and welding times, thus simplifying the assembly process and reducing processing and material costs. The outlet pipe and the inlet port are sealed with a sealing ring, which reduces leakage, improves compressor performance, and reduces compressor noise. At the same time, it avoids cylinder deformation and displacement caused by the large pressure of the interference fit seal, thus improving the quality of the compressor. In particular, the liquid reservoir assembly structure of this utility model designs the outlet ends of the inlet port and the outlet pipe as matching stepped structures, so that the sealing ring is accommodated between the stepped surfaces of the inlet port and the outlet pipe and is held by them. This method of installing the sealing ring simplifies the installation process, makes the assembly of the sealing ring easier, and helps to improve the sealing stability of the sealing ring. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of the compressor receiver assembly structure in the prior art.

[0019] Figure 2 This is a cross-sectional schematic diagram of the liquid reservoir assembly structure according to an embodiment of the present utility model.

[0020] The reference numerals in the attached figures are explained as follows:

[0021] 01 cylinder

[0022] 010 air intake

[0023] 02 Shell

[0024] 020 through hole

[0025] 03 Housing Seat Ring

[0026] 04 Intake connection pipe

[0027] 05 Exhaust pipe

[0028] 1 cylinder

[0029] 10 air intakes

[0030] 11 large diameter hole sections

[0031] 12 small diameter sections

[0032] 13 First Step Surface

[0033] 2 shells

[0034] 20 through holes

[0035] 3 exhaust pipes

[0036] 31 large diameter pipe sections

[0037] 32 small diameter pipe section

[0038] 33 Second Step Surface

[0039] 34 Limiting section

[0040] 4 sealing rings Detailed Implementation

[0041] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0042] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0045] like Figure 2 The image shows an embodiment of the liquid reservoir assembly structure provided by this utility model. The liquid reservoir assembly structure of this embodiment includes an air inlet 10 on the cylinder 1, a through hole 20 on the housing 2, an air outlet pipe 3 for the liquid reservoir, and a sealing ring 4.

[0046] The cylinder 1 is housed inside the casing 2, and a through hole 20 is located on the casing 2 at a position corresponding to the air inlet 10. The end of the outlet pipe 3 of the liquid reservoir furthest from the liquid reservoir is the outlet end. The outlet end of the outlet pipe 3 is inserted into the air inlet 10 through the through hole 20 to deliver low-temperature, low-pressure refrigerant gas into the cylinder 1 for compression. The outlet pipe 3 is welded to the casing 2 to ensure airtightness. Preferably, the outlet pipe 3 and the casing 2 are connected by high-frequency welding or laser welding.

[0047] The intake port 10 is a stepped port. The intake port 10 includes a large-diameter port section 11 and a small-diameter port section 12 connected sequentially along the direction close to the center of the cylinder 1 and with decreasing inner diameters. The inner diameter of the large-diameter port section 11 is larger than the inner diameter of the small-diameter port section 12. A first stepped surface 13 is formed between the large-diameter port section 11 and the small-diameter port section 12. The first stepped surface 13 faces away from the center of the cylinder 1 and faces the outer side of the cylinder 1.

[0048] The outlet end of the exhaust pipe 3 is stepped to match the intake port 10. The outlet end of the exhaust pipe 3 includes a large-diameter pipe section 31 and a small-diameter pipe section 32 connected sequentially along the direction close to the outlet end of the exhaust pipe 3 and with decreasing outer diameters. The outer diameter of the large-diameter pipe section 31 is larger than the outer diameter of the small-diameter pipe section 32. A second step surface 33 is formed on the outer peripheral surface of the exhaust pipe 3 between the large-diameter pipe section 31 and the small-diameter pipe section 32. The second step surface 33 faces the center of the cylinder 1 and is spaced apart from the first step surface 13.

[0049] The sealing ring 4 is housed in the space between the second step surface 33 and the first step surface 13 and is clamped between the small diameter pipe section 32 and the large diameter hole section 11. By clamping the sealing ring 4 between the small diameter pipe section 32 and the large diameter hole section 11, the air outlet pipe 3 and the air inlet 10 are sealed, and the sealing ring 4 is prevented from axial movement.

[0050] In this embodiment, the liquid reservoir assembly structure allows the outlet pipe 3 of the liquid reservoir to be directly inserted into the inlet port 10 of the cylinder 1 through the through hole 20 on the housing 2, and the outlet pipe 3 to the housing 2 is welded. This eliminates the need for the housing seat ring and the inlet connecting pipe, reducing the number of assembly parts, welding components, and welding times, thus simplifying the assembly process and reducing processing and material costs. The outlet pipe 3 and the inlet port 10 are sealed by a sealing ring 4, which reduces leakage, improves compressor performance, and reduces compressor noise. At the same time, it avoids cylinder 1 deformation and displacement caused by the large pressure of the interference fit seal, thus improving the quality of the compressor. In particular, the liquid reservoir assembly structure of this embodiment designs the outlet port 10 and the outlet end of the outlet pipe 3 as matching stepped structures, so that the sealing ring 4 is accommodated between the stepped surfaces of the inlet port 10 and the outlet pipe 3 and is held by them. This method of installing the sealing ring 4 simplifies the installation process, makes the assembly of the sealing ring 4 easier, and helps to improve the sealing stability of the sealing ring 4.

[0051] In this embodiment, preferably, the distance between the second step surface 33 and the first step surface 13 is greater than the thickness of the sealing ring 4, where the thickness of the sealing ring 4 refers to its axial dimension. Ensuring that the distance between the step surfaces of the air inlet 10 and the air outlet 3 is greater than the thickness of the sealing ring 4 prevents the sealing ring 4, which is housed between the step surfaces of the air inlet 10 and the air outlet 3, from being deformed axially, thus affecting the sealing effect.

[0052] In this embodiment, preferably, a protruding limiting portion 34 is formed on the outer peripheral surface of the air outlet pipe 3 near the outlet end of the air outlet pipe 3. The limiting portion 34 abuts against the outer side of the housing 2, creating a gap between the second step surface 33 and the first step surface 13. By limiting the abutment between the limiting portion 34 and the housing 2, the extreme position at which the air outlet pipe 3 can be inserted into the air inlet 10 can be limited, thereby limiting the minimum gap between the second step surface 33 and the first step surface 13, ensuring that the required gap is formed between the second step surface 33 and the first step surface 13. When the limiting portion 34 abuts against the housing 2, it is preferable that the gap between the second step surface 33 and the first step surface 13 is greater than the thickness of the sealing ring 4.

[0053] Furthermore, the limiting part 34 is welded to the housing 2. The vent pipe 3 is fixed to the housing 2 by welding through the limiting part 34 that abuts against the outer side of the housing 2, which facilitates the welding operation and ensures the welding sealing effect.

[0054] In this embodiment, preferably, the exhaust pipe 3 and the air inlet 10 are fitted with a clearance fit, with the clearance size preferably being 0.2mm ± 0.05mm. This clearance fit facilitates easy and smooth insertion of the exhaust pipe 3 into the air inlet 10, simplifying assembly. Since the sealing ring 4 is sandwiched between the small-diameter section 32 of the exhaust pipe 3 and the large-diameter section 11 of the air inlet 10, a seal is formed between the exhaust pipe 3 and the air inlet 10. Therefore, the clearance fit between the exhaust pipe 3 and the air inlet 10 does not affect the sealing performance.

[0055] In this embodiment, preferably, the distance between the sealing ring 4 and the welding position between the vent pipe 3 and the housing 2 is not less than 20mm. Figure 2 As shown, the distance between the welding position of the vent pipe 3 and the housing 2 and the location of the sealing ring 4 is H, where H ≥ 20 mm. This creates a safe distance, which reduces the influence of welding temperature on the sealing ring 4 during welding, ensuring that the performance of the sealing ring 4 is not affected by the welding of the vent pipe 3 and the housing 2.

[0056] In this embodiment, preferably, the material of the sealing ring 4 is ethylene propylene rubber (EPDM), hydrogenated nitrile butadiene rubber (HNBR), or fluororubber (FKM).

[0057] In this embodiment, the sealing ring 4 and the vent pipe 3 can be independent separate parts, or the sealing ring 4 and the vent pipe 3 can be integrally formed, preferably by vulcanization integral molding.

[0058] Based on the liquid receiver assembly structure of this utility model, this utility model embodiment also provides a compressor. The compressor of this embodiment includes the liquid receiver assembly structure described above.

[0059] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A liquid reservoir assembly structure, characterized in that, include: An air inlet (10) is provided on the cylinder (1). The air inlet (10) includes a large-diameter hole section (11) and a small-diameter hole section (12) that are connected sequentially along the direction close to the center of the cylinder (1) and have decreasing inner diameters. A first step surface (13) is formed between the large-diameter hole section (11) and the small-diameter hole section (12). A through hole (20) is provided on the housing (2) that houses the cylinder (1) at a position corresponding to the air inlet (10); an outlet pipe (3) of the reservoir, the outlet end of the outlet pipe (3) is inserted into the air inlet (10) through the through hole (20), the outlet pipe (3) is welded to the housing (2), the outlet end of the outlet pipe (3) includes a large-diameter pipe section (31) and a small-diameter pipe section (32) connected sequentially along the direction close to the outlet end of the outlet pipe (3) and with decreasing outer diameter, and a second step surface (33) is formed on the outer peripheral surface of the outlet pipe (3) between the large-diameter pipe section (31) and the small-diameter pipe section (32) and is spaced apart from the first step surface (13); The sealing ring (4) is housed in the space between the second step surface (33) and the first step surface (13) and is held between the small diameter pipe section (32) and the large diameter hole section (11).

2. The liquid reservoir assembly structure according to claim 1, characterized in that, The distance between the second step surface (33) and the first step surface (13) is greater than the thickness of the sealing ring (4).

3. The liquid reservoir assembly structure according to claim 1 or 2, characterized in that, A limiting part (34) protruding outward is formed on the outer peripheral surface of the air outlet pipe (3) near the outlet end of the air outlet pipe (3). The limiting part (34) abuts against the outer side of the housing (2) and forms a gap between the second step surface (33) and the first step surface (13).

4. The liquid reservoir assembly structure according to claim 3, characterized in that, The limiting part (34) is welded to the housing (2).

5. The liquid reservoir assembly structure according to claim 1, characterized in that, The air outlet (3) and the air inlet (10) are fitted with a clearance.

6. The liquid reservoir assembly structure according to claim 1, characterized in that, The distance between the sealing ring (4) and the welding position between the air outlet pipe (3) and the housing (2) is not less than 20mm.

7. The liquid reservoir assembly structure according to claim 1, characterized in that, The sealing ring (4) is made of ethylene propylene rubber, hydrogenated nitrile rubber, or fluororubber.

8. The liquid reservoir assembly structure according to claim 1, characterized in that, The sealing ring (4) and the air outlet pipe (3) are either separate parts or integral parts formed by mutual separation.

9. The liquid reservoir assembly structure according to claim 1, characterized in that, The air outlet pipe (3) and the housing (2) are connected by high-frequency welding or laser welding.

10. A compressor, characterized in that, Includes the reservoir assembly structure as described in any one of claims 1 to 9.

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