Quick-release filter screen structure of liquid accumulator of refrigeration compressor

Abstract

The utility model relates to the technical field of refrigeration equipment, and discloses a quick-release filter screen structure of a liquid storage device of a refrigeration compressor, which comprises a protective shell and a filter screen piece, the protective shell is used for fixing the filter screen piece at an inlet of the liquid storage device, an air inlet pipe is arranged on the protective shell, and the filter screen piece is used for cleaning air conveyed by the air inlet pipe. A limiting frame is fixed to the end face of the inlet, the filter screen piece is located in the limiting frame, a fastener is arranged on the end face, located outside the limiting frame, of the inlet and used for fixing the protective shell to the limiting frame, a sealing piece is arranged on the inner top face of the protective shell, and the sealing piece is used for pressing the filter screen piece into the limiting frame. The liquid storage device has the advantages that the ejector rod is pressed into the fixed cylinder through the inner side of the lower frame of the shell, then the limiting frame is sleeved with the shell, the shell is loosened, under the action of the spring, the upper frame of the shell tightly presses the limiting frame, and therefore the liquid storage device is fixed to an inlet of the liquid storage device, disassembly and assembly are rapid and convenient, and maintenance efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a quick-detachable filter screen structure of a refrigeration compressor liquid receiver. Background Art

[0002] The liquid storage tank is a key component of the compressor, serving as a storage, gas-liquid separation, filtration, silencing, and refrigerant buffer. It consists of a cylinder, an air inlet pipe, an air outlet pipe, a filter, and other components. Its working principle is as follows: The liquid storage tank is installed between the air conditioner evaporator and the compressor suction pipe. It is a protective component to prevent liquid refrigerant from flowing into the compressor and causing liquid hammer. During the operation of the air conditioning system, there is no guarantee that the refrigerant can be completely vaporized; that is, some liquid refrigerant from the evaporator will enter the liquid storage tank. Since the unvaporized liquid refrigerant is heavier than the gas, it will directly fall to the bottom of the liquid storage tank. The vaporized refrigerant enters the compressor through the liquid storage tank outlet, thus preventing the compressor from sucking in liquid refrigerant and causing liquid hammer. During operation, the liquid storage tank component is installed between the air inlet and outlet pipes of the liquid storage tank to prevent impurities in the pipeline from directly entering the compressor.

[0003] The Chinese utility model patent (authorization announcement number: CN204648773U, title: A spin-type liquid storage tank) includes a cylinder, an air inlet pipe and an air outlet pipe. The air outlet pipe is arranged at the bottom of the cylinder, and the air inlet pipe is arranged at the top of the cylinder. The air inlet pipe has a metal filter element directly connected to the air inlet pipe. This utility model solves the problems of loose, missing and over-installed traditional filter elements, while reducing the filter element structure and reducing manufacturing costs. However, its filter element is not easy to disassemble quickly, affecting maintenance efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a quick-detachable filter screen structure for a refrigeration compressor liquid accumulator, so as to overcome the shortcomings of the prior art.

[0005] 18. The air filter assembly of claim 17, wherein the filter assembly comprises a first filter element and a second filter element, the first filter element comprising a first filter element and a second filter element. The filter assembly comprises a first filter element and a second filter element. The first filter element comprises a first filter element and a second filter element. The first filter element comprises a first filter element and a second filter element. The first filter element comprises a first filter element and a second filter element.

[0006] Preferably, an oblong through hole is opened on the side wall of the fixed cylinder along its axial center line direction, a limit pin is slidably installed in the oblong through hole, the limit pin is inserted into the push rod, and the end surface of the push rod away from the limit frame is an arc surface.

[0007] Preferably, the seal includes an annular groove and a rubber body ring, the annular groove is opened on the inner top surface of the protective shell, the body ring is adapted to the annular groove, and a raised ring A is integrally formed on the inner ring or the outer ring of the body ring, the raised ring A is concentric with the body ring, the raised ring A extends to the bottom of the body ring, and the connection between the raised ring A and the side wall of the body ring is smoothly transitioned.

[0008] Preferably, a contraction groove is provided at the bottom of the body ring, and the contraction groove is circular and has the same center as the body ring.

[0009] Preferably, a B raised ring is integrally formed on the top of the body ring, the B raised ring is cocentric with the body ring, and the connection between the B raised ring and the side wall of the body ring is smoothly transitioned.

[0010] Preferably, the annular groove has a chamfered notch.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The push rod is first pressed into the fixed cylinder through the inner side of the lower frame of the shell, and then the shell is put on the limit frame. After the shell is released, under the action of the spring, the upper frame of the shell presses the limit frame to fix it at the inlet of the liquid reservoir. Disassembly and assembly are quick and convenient, which improves maintenance efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 ;

[0015] Figure 3 for Figure 1 A partial enlarged schematic diagram of point A in the middle;

[0016] Figure 4 This is a schematic diagram of the installation structure of the body ring;

[0017] In the figure, 1-protective shell, 2-filter element, 3-inlet pipe, 4-limiting frame, 5-fixed cylinder, 6-spring, 7-top rod, 8-oblong through hole, 9-limiting pin, 10-annular groove, 11-body ring, 12-A raised ring, 13-contraction groove, 14-B raised ring. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0022] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of the present invention is typically placed when in use, or are the orientations or positional relationships commonly understood by those skilled in the art. These terms are intended solely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used solely to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0023] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] like Figure 1-3 As shown, a quick-detachable filter structure for a refrigeration compressor accumulator includes a protective shell 1 and a filter element 2. The protective shell 1 is used to fix the filter element 2 at the inlet of the accumulator. An air intake pipe 3 is provided on the protective shell 1. The air intake pipe 3 is perpendicular to the end face of the inlet. The filter element 2 is used to clean the gas transported by the air intake pipe 3. A limit frame 4 is fixed on the end face of the inlet. The filter element 2 is located in the limit frame 4. A fastener is provided on the end face of the inlet outside the limit frame 4. The fastener is used to fix the protective shell 1 on the limit frame 4. The fastener includes a fixed cylinder 5, a spring 6 and a And the push rod 7, the fixed cylinder 5 is fixed on the outer wall of the limit frame 4, the spring 6 is compressed and installed in the fixed cylinder 5 through the push rod 7, the push rod 7 is pressed into the fixed cylinder 5 through the protective shell 1, and a seal is provided on the inner top surface of the protective shell 1. The seal is used to press the filter element 2 into the limit frame 4. The push rod 7 is first pressed into the fixed cylinder 5 through the inner side of the lower frame of the shell, and then the shell is put on the limit frame 4. After the shell is released, under the action of the spring 6, the upper frame of the shell presses the limit frame 4 to fix it at the inlet of the liquid reservoir. Disassembly and assembly are quick and convenient, which improves maintenance efficiency.

[0025] In this embodiment, if Figure 3As shown, an oblong through hole 8 is opened on the side wall of the fixed cylinder 5 along its axial center line direction, and a limit pin 9 is slidably installed in the oblong through hole 8. The limit pin 9 is inserted into the push rod 7. The end surface of the push rod 7 away from the limit frame 4 is an arc surface, which prevents the push rod 7 from popping out of the fixed cylinder 5 after unlocking and causing failure. At the same time, the arc surface reduces the contact area with the protective shell, reducing the risk of scratching the protective shell.

[0026] In this embodiment, if Figure 4 As shown, the seal includes an annular groove 10 and a rubber body ring 11. The annular groove 10 is provided on the inner top surface of the protective shell 1. The body ring 11 is adapted to the annular groove 10. A raised ring 12 is integrally formed on the inner ring or outer ring of the body ring 11. The raised ring 12 is concentric with the body ring 11. The raised ring 12 extends to the bottom of the body ring 11, and the connection between the raised ring 12 and the side wall of the body ring 11 is smoothly transitioned. The body ring 11 is fixed in the annular groove 10 by snapping the raised ring 12 into the accommodating cavity. The snapping of the raised ring 12 into the accommodating cavity not only increases the filling rate of the annular groove 10 by the body ring 11 and improves the sealing effect, but also the body ring 11 is snapped into the annular groove 10, making the structure of the body ring 11 more stable after installation and not easy to fall off.

[0027] In this embodiment, if Figure 4 As shown, a shrinkage groove 13 is provided at the bottom of the main body ring 11. The shrinkage groove 13 is circular and concentric with the main body ring 11. When the main body ring 11 is installed into the annular groove 10, the shrinkage groove 13 deforms and shrinks, making it easier to install the main body ring 11. After installation, the main body ring 11 is restored under the action of elastic force and is stuck in the annular groove 10. The structure is stable and not easy to fall off.

[0028] In this embodiment, if Figure 4 As shown, the top of the body ring 11 is integrally formed with a B raised ring 14, which is concentric with the body ring 11. The connection between the B raised ring 14 and the side wall of the body ring 11 is smoothly transitioned. A gap is provided between the side wall of the body ring 11 and the inner wall of the annular groove 10. The top of the B raised ring 14 is located above the notch of the annular groove 10. When the body ring 11 is not working, the body ring 11 is stuck in the annular groove 10 by the A raised ring 12 to prevent it from falling off from the annular groove 10, and to avoid being stuck in the annular groove 10 by the deformation of the body ring 11. When the main body ring 11 is working, the B raised ring 14 is pressed into the annular groove 10, and the entire main body ring 11 is deformed, thereby filling the gap between the main body ring 11 and the annular groove 10, preventing leakage while avoiding secondary deformation of the main body ring 11 (the O-shaped main body ring 11 relies on primary deformation to be stuck in the annular groove 10, and when working, it needs to seal the gap between the two workpieces, so the part protruding above the annular groove 10 will be compressed into the annular groove 10, that is, secondary deformation). The stress in the main body ring 11 is too large and damage occurs.

[0029] In this embodiment, if Figure 4 As shown, the annular groove 10 has a chamfered notch to prevent the body ring 11 from being scratched by sharp corners when it is inserted into the annular groove 10 , thereby reducing the service life of the body ring 11 .

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A quick-detachable filter structure for a refrigeration compressor accumulator, comprising a protective shell (1) and a filter element (2), wherein the protective shell (1) is used to fix the filter element (2) to the inlet of the accumulator, an air intake pipe (3) is provided on the protective shell (1), the air intake pipe (3) is perpendicular to the end face of the inlet, the filter element (2) is used to clean the gas transported by the air intake pipe (3), a limit frame (4) is fixed on the end face of the inlet, and the filter element (2) is located in the limit frame (4), characterized in that: A fastener is provided on the end face of the inlet outside the limit frame (4), and the fastener is used to fix the protective shell (1) on the limit frame (4). The fastener includes a fixed cylinder (5), a spring (6) and a push rod (7). The fixed cylinder (5) is fixed on the outer wall of the limit frame (4), and the spring (6) is compressed and installed in the fixed cylinder (5) through the push rod (7). The push rod (7) is pressed into the fixed cylinder (5) through the protective shell (1). A sealing member is provided on the inner top surface of the protective shell (1), and the sealing member is used to press the filter element (2) into the limit frame (4).

2. The quick-detachable filter structure for a refrigeration compressor liquid receiver according to claim 1, characterized in that: An oblong through hole (8) is provided on the side wall of the fixed cylinder (5) along its axial centerline direction. A limit pin (9) is slidably installed in the oblong through hole (8). The limit pin (9) is inserted into the push rod (7). The end surface of the push rod (7) away from the limit frame (4) is an arc surface.

3. The quick-detachable filter structure for a refrigeration compressor liquid accumulator according to claim 1, characterized in that: The sealing member comprises an annular groove (10) and a rubber body ring (11), wherein the annular groove (10) is provided on the inner top surface of the protective shell (1), the body ring (11) is adapted to the annular groove (10), and an A raised ring (12) is integrally formed on the inner ring or the outer ring of the body ring (11), the A raised ring (12) is cocentric with the body ring (11), the A raised ring (12) extends to the bottom of the body ring (11), and the connection between the A raised ring (12) and the side wall of the body ring (11) is smoothly transitioned.

4. The quick-detachable filter structure for a refrigeration compressor liquid accumulator according to claim 3, characterized in that: A contraction groove (13) is provided at the bottom of the body ring (11); the contraction groove (13) is circular and has the same center as the body ring (11).

5. The quick-detachable filter structure for a refrigeration compressor liquid accumulator according to claim 3, characterized in that: A B raised ring (14) is integrally formed on the top of the main body ring (11), the B raised ring (14) and the main body ring (11) are cocentric, and the connection between the B raised ring (14) and the side wall of the main body ring (11) is smoothly transitioned.

6. The quick-detachable filter structure for a refrigeration compressor liquid accumulator according to claim 3, characterized in that: The notch of the annular groove (10) is chamfered.

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