Bidirectional expansion valve with anti-blocking function

Abstract

The utility model discloses a two-way expansion valve with an anti-blocking function, which relates to the field of expansion valves and comprises a two-way expansion valve shell, one side of the two-way expansion valve shell is fixedly connected with a wet steam outlet pipe, and the other side of the two-way expansion valve shell is fixedly connected with a refrigerant inlet pipe. A threaded sleeve is movably connected to the outer wall of the refrigerant inlet pipe, a clamping groove is formed in the refrigerant inlet pipe, an inserting ring is installed in the refrigerant inlet pipe, a protruding block is fixedly connected to the outer wall of the inserting ring, a connecting pipe is fixedly connected to one side of the inserting ring, and the connecting pipe can rotate by rotating the threaded sleeve. According to the two-way expansion valve, limiting of the threaded sleeve to the connecting pipe can be relieved, the connecting pipe is pulled outwards, the clamping groove can extrude the protruding block, the protruding block deforms, limiting of the inserting ring is released, the inserting ring is driven to move out of one end of the refrigerant inlet pipe, and the effect that the two-way expansion valve can be conveniently and regularly disassembled and maintained is achieved; and the service life of the two-way expansion valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of expansion valves, in particular to a two-way expansion valve with a blockage prevention function. Background Technique

[0002] Expansion valves are widely used in various large, medium-sized or small refrigeration equipment, and are generally used more in air conditioners to throttle medium-temperature and high-pressure liquid refrigerants into low-temperature and low-pressure wet steam. The expansion valve is usually installed at the refrigerant inlet of the evaporator. The low-temperature and low-pressure wet steam generated by the expansion valve enters the evaporator and exchanges heat through the tube wall of the evaporator. The current two-way expansion valves are often installed by welding, which is inconvenient for regular cleaning and maintenance of the expansion valve, resulting in blockage inside. Therefore, a two-way expansion valve with a blockage prevention function is needed.

[0003] For the existing two-way expansion valves, during use, it is inconvenient to regularly disassemble and maintain the expansion valve, and it is also inconvenient to prevent blockage inside the expansion valve. Therefore, there is an urgent need for a two-way expansion valve with a blockage prevention function. Content of the Utility Model

[0004] Based on this, the purpose of the utility model is to provide a two-way expansion valve with a blockage prevention function to solve the problems that the existing two-way expansion valves are inconvenient for regular disassembly and maintenance and inconvenient for preventing blockage inside the expansion valve.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A two-way expansion valve with a blockage prevention function, including a two-way expansion valve housing. One side of the two-way expansion valve housing is fixedly connected with a wet steam outlet pipe, and the other side of the two-way expansion valve housing is fixedly connected with a refrigerant inlet pipe. The outer wall of the refrigerant inlet pipe is movably connected with a threaded sleeve. A clamping groove is opened inside the refrigerant inlet pipe. An insertion ring is installed inside the refrigerant inlet pipe. A convex block is fixedly connected to the outer wall of the insertion ring. A connecting pipe is fixedly connected to one side of the insertion ring.

[0006] A blocking block is fixedly connected to the inside of the refrigerant inlet pipe. A docking hole is opened inside the blocking block. A filter screen is installed inside the refrigerant inlet pipe. A docking block is fixedly connected to one side of the filter screen.

[0007] Preferably, the outer walls of the refrigerant inlet pipe and the connecting pipe are both provided with threads, and the refrigerant inlet pipe is adapted to the connecting pipe.

[0008] Preferably, the threaded sleeve is threadedly connected to the refrigerant inlet pipe and is also threadedly connected to the connecting pipe.

[0009] Preferably, the threaded sleeve is of a slotted design, and the insertion ring is snap-fitted with the refrigerant inlet pipe.

[0010] Preferably, the bump is elastically arranged, and the bump is snap-connected to the refrigerant inlet pipe through a clamping groove.

[0011] Preferably, the docking block is symmetrically arranged with respect to the central axis of the filter net, and the docking block is snap-connected to the blocking block through a docking hole.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the refrigerant inlet pipe, threaded sleeve, clamping groove, insertion ring, bump and connecting pipe provided in the present utility model, by rotating the threaded sleeve, since the threaded sleeve is threadedly connected to the refrigerant inlet pipe and the connecting pipe respectively, the threaded sleeve can be used to release the limit on the connecting pipe. By pulling the connecting pipe outwards, the clamping groove can squeeze the bump, causing the bump to deform and release the limit on the insertion ring, driving the insertion ring to move out from one end of the refrigerant inlet pipe, which facilitates the regular disassembly and maintenance of the two-way expansion valve, improves the service life of the two-way expansion valve, and thus enhances the refrigeration effect of the air conditioner;

[0014] 2. Through the refrigerant inlet pipe, insertion ring, blocking block, docking hole, filter net and docking block provided in the present utility model, by moving the filter net, making it slide and insert along one end of the refrigerant inlet pipe, driving the docking block to snap into the docking hole for limiting, so that the filter net is located between the blocking block and the insertion ring, the filter net can filter out the impurity particles in the refrigerant, which facilitates the anti-blocking treatment of the inside of the expansion valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a three-dimensional structure diagram of the present utility model;

[0016] Figure 2 is a schematic diagram of the disassembled structure of the present utility model;

[0017] Figure 3 is a three-dimensional view of the two-way expansion valve housing of the present utility model;

[0018] Figure 4 is a three-dimensional sectional view of the refrigerant inlet pipe of the present utility model.

[0019] In the figure: 1. Two-way expansion valve housing; 2. Wet steam outlet pipe; 3. Refrigerant inlet pipe; 4. Threaded sleeve; 5. Clamping groove; 6. Insertion ring; 7. Bump; 8. Connecting pipe; 9. Blocking block; 10. Docking hole; 11. Filter net; 12. Docking block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0021] The embodiments of the present utility model will be described below according to its overall structure.

[0022] Please refer to Figures 1-4 , a two-way expansion valve with an anti-blocking function, which includes a two-way expansion valve housing 1. A wet steam outlet pipe 2 is fixedly connected to one side of the two-way expansion valve housing 1. A refrigerant inlet pipe 3 is fixedly connected to the other side of the two-way expansion valve housing 1. A threaded sleeve 4 is movably connected to the outer wall of the refrigerant inlet pipe 3. A clamping groove 5 is opened inside the refrigerant inlet pipe 3. An insertion ring 6 is installed inside the refrigerant inlet pipe 3. A convex block 7 is fixedly connected to the outer wall of the insertion ring 6. A connecting pipe 8 is fixedly connected to one side of the insertion ring 6. Threads are provided on the outer walls of both the refrigerant inlet pipe 3 and the connecting pipe 8, and the refrigerant inlet pipe 3 is adapted to the connecting pipe 8. The threaded sleeve 4 is threadedly connected to the refrigerant inlet pipe 3 and is also threadedly connected to the connecting pipe 8. The threaded sleeve 4 is of a slotted design, and the insertion ring 6 is snap-fitted with the refrigerant inlet pipe 3. The convex block 7 is elastically arranged and is snap-fitted with the refrigerant inlet pipe 3 through the clamping groove 5, which can facilitate the disassembly and maintenance of the two-way expansion valve regularly.

[0023] Please refer to Figures 1-4 , a two-way expansion valve with an anti-blocking function. A stop block 9 is fixedly connected inside the refrigerant inlet pipe 3. A docking hole 10 is opened inside the stop block 9. A filter screen 11 is installed inside the refrigerant inlet pipe 3. A docking block 12 is fixedly connected to one side of the filter screen 11. The docking block 12 is symmetrically arranged with respect to the central axis of the filter screen 11, and the docking block 12 is snap-fitted with the stop block 9 through the docking hole 10, which can facilitate the anti-blocking treatment of the inside of the expansion valve.

[0024] Working principle: When in use, by rotating the threaded sleeve 4, since the threaded sleeve 4 is threadedly connected to the refrigerant inlet pipe 3 and the connecting pipe 8 respectively, the threaded sleeve 4 can be disengaged from the limit on the connecting pipe 8. By pulling the connecting pipe 8 outwards, the clamping groove 5 can squeeze the convex block 7, causing the convex block 7 to deform and release the limit on the insertion ring 6, driving the insertion ring 6 to move out from one end of the refrigerant inlet pipe 3, achieving the effect of facilitating the regular disassembly and maintenance of the two-way expansion valve. By moving the filter net 11 and sliding it into the refrigerant inlet pipe 3 along one end, the docking block 12 is driven to be clamped and inserted into the docking hole 10 for positioning. When the insertion ring 6 is installed, it can squeeze one side of the filter net 11 so that it is located between the stop block 9 and the insertion ring 6, enabling the filter net 11 to filter out impurity particles in the refrigerant, achieving the effect of facilitating the anti-blocking treatment inside the expansion valve. In this way, the use process of the device is completed. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0025] The orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only a simplified description for facilitating the description of the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the protection scope of the present invention.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A two-way expansion valve with a clogging prevention function, comprising a two-way expansion valve housing (1), characterized in that: One side of the housing (1) of the two-way expansion valve is fixedly connected to a wet steam outlet pipe (2), and the other side of the housing (1) of the two-way expansion valve is fixedly connected to a refrigerant inlet pipe (3). A threaded sleeve (4) is movably connected to the outer wall of the refrigerant inlet pipe (3). A clamping groove (5) is formed inside the refrigerant inlet pipe (3). An insertion ring (6) is installed inside the refrigerant inlet pipe (3). A convex block (7) is fixedly connected to the outer wall of the insertion ring (6). A connecting pipe (8) is fixedly connected to one side of the insertion ring (6). A stop block (9) is fixedly connected inside the refrigerant inlet pipe (3). A docking hole (10) is formed inside the stop block (9). A filter screen (11) is installed inside the refrigerant inlet pipe (3). A docking block (12) is fixedly connected to one side of the filter screen (11).

2. The two-way expansion valve with anti-blocking function according to claim 1, wherein: Threads are provided on the outer walls of both the refrigerant inlet pipe (3) and the connecting pipe (8), and the refrigerant inlet pipe (3) is adapted to the connecting pipe (8).

3. The two-way expansion valve with a clogging prevention function according to claim 1, characterized in that: The threaded sleeve (4) is threadedly connected to the refrigerant inlet pipe (3), and the threaded sleeve (4) is threadedly connected to the connecting pipe (8).

4. The two-way expansion valve with a clogging prevention function according to claim 1, characterized in that: The threaded sleeve (4) is of a slotted design, and the insertion ring (6) is snap-connected to the refrigerant inlet pipe (3).

5. The two-way expansion valve with a clogging prevention function according to claim 1, wherein: The convex block (7) is elastically arranged, and the convex block (7) is snap-connected to the refrigerant inlet pipe (3) through the clamping groove (5).

6. The two-way expansion valve with anti-blocking function according to claim 1, characterized in that: The docking block (12) is symmetrically arranged with respect to the central axis of the filter screen (11), and the docking block (12) is snap-connected to the stop block (9) through the docking hole (10).

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