Anti-backflow air conditioner one-way valve

Abstract

The utility model discloses an anti-backflow air conditioner one-way valve, belongs to the technical field of air conditioner refrigerant systems, is used for equipment such as air conditioners, refrigerators and refrigerating machines, and comprises a pipe body, a valve element, a valve seat and a guide part. According to the one-way valve, the guiding piece is designed, installed on the inner side of the pipe body and slidably connected with the valve element, so that the sliding stability of the valve element is guaranteed, and the problems of blockage, one-way valve failure and the like are solved; the guide part is designed to be of the barrel structure, so that when the valve element slides on the guide part, the valve element is not affected by the inner wall of the pipe body, parameters such as the precision, the surface roughness and the wall thickness uniformity of the inner wall of the pipe body can be properly relaxed when the pipe body is produced and manufactured, and the stability of guide movement of the valve element is not affected; therefore, the manufacturing cost of the air conditioner one-way valve can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air-conditioning refrigerant systems, and in particular to an anti-backflow air-conditioning one-way valve. Background Art

[0002] Anti-backflow check valves are used in refrigeration equipment such as air conditioners and refrigerators to prevent high-pressure backflow when the compressor in the system stops and to control the amount of refrigerant during heating to achieve the purpose of heating.

[0003] The one-way valve currently used adopts a cone (valve core) to slide directly in the copper tube. The stability of the cone sliding is affected by the inner wall of the copper tube. When producing and processing the copper tube, the quality of the inner wall of the copper tube under the through-rolling (or extrusion expansion) process is difficult to ensure, and the cost of improving the quality of the inner wall of the copper tube is high. Therefore, the utility model provides a novel anti-backflow air-conditioning one-way valve. Summary of the invention

[0004] The purpose of the present application is to provide a novel anti-backflow air-conditioning one-way valve structure, thereby reducing the production cost of the anti-backflow air-conditioning one-way valve.

[0005] In order to achieve the above objectives, the technical solution adopted in this application is:

[0006] A backflow air conditioning one-way valve, comprising:

[0007] tube body;

[0008] A valve core installed and slidable in the pipe body;

[0009] A valve seat fixedly mounted in the pipe body;

[0010] A guide member, the guide member is fixedly installed in the pipe body, and the guide member is located at an end of the valve core away from the valve seat, and the valve core is slidably connected to the guide member;

[0011] The guide member is a cylinder structure.

[0012] As a preferred embodiment, the guide member comprises:

[0013] An annular segment, the outer side of which is fixedly connected to the inner wall of the tube body;

[0014] A second strip sliding member, the second strip sliding member is arranged along the axial direction of the annular segment, and one end of the second strip sliding member is fixedly connected to the end of the annular segment, a plurality of the second strip sliding members are arranged, and the plurality of the second strip sliding members are distributed in an annular array, and a second sliding opening is formed between two adjacent second strip sliding members;

[0015] The tail of the valve core has a large diameter ring segment, and one end of the large diameter ring segment facing the guide member is fixedly connected to a plurality of first strip sliding members distributed in an annular array, and a first sliding opening is formed between two adjacent first strip sliding members;

[0016] The second strip-shaped sliding member is located at the inner side of the first sliding opening, and the first strip-shaped sliding member is located at the inner side of the second sliding opening.

[0017] As a preferred embodiment, the head of the valve core is a cone head and the valve seat is annular.

[0018] Further preferably, a small-diameter ring segment is provided between the head portion and the tail portion of the valve core, and a side hole is opened on the side surface of the small-diameter ring segment.

[0019] As another preference, the second sliding opening is an arc-shaped opening with a larger inner side and a smaller outer side.

[0020] As another preferred embodiment, a soldering opening is provided on the outer side of the annular segment.

[0021] As another preferred embodiment, the tube body comprises: a copper tube and a welding joint;

[0022] The copper tube includes an integrally formed tube section and a first joint section;

[0023] The welding joint comprises an integrally formed connecting section and a second connecting section, wherein the connecting section is fixedly connected to the inner side of the pipe section.

[0024] Compared with the prior art, the beneficial effects of this application are:

[0025] (1) The utility model designs a guide member, which is installed on the inner side of the pipe body and is slidably connected to the valve core, thereby ensuring the smooth sliding of the valve core and avoiding problems such as blockage and one-way valve failure;

[0026] (2) The utility model designs the guide member as a cylindrical structure so that when the valve core and the guide member slide, the valve core is not affected by the inner wall of the tube body. When the tube body is manufactured, the parameters such as the accuracy, surface roughness, and uniformity of the inner wall can be appropriately relaxed without affecting the smoothness of the guide movement of the valve core, thereby reducing the manufacturing cost of the air conditioning one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a three-dimensional diagram of the anti-backflow air conditioning one-way valve;

[0028] Figure 2 is a front view of the anti-backflow air conditioning one-way valve;

[0029] Figure 3 for Figure 2 Section view of the section line at AA;

[0030] Figure 4 A three-dimensional diagram of the valve core structure of the anti-backflow air conditioning one-way valve;

[0031] Figure 5 It is a schematic end view of the guide member of the anti-backflow air conditioning one-way valve;

[0032] Figure 6 for Figure 3 A partial enlarged view of point B in the middle.

[0033] In the figure: 1, copper tube; 101, pipe section; 102, first joint section; 2, welding joint; 201, second joint section; 202, connecting section; 3, valve seat; 4, valve core; 401, cone head; 402, small diameter ring section; 403, large diameter ring section; 404, first strip sliding member; 405, side hole; 406, first sliding port; 5, guide member; 501, ring section; 502, second strip sliding member; 503, second sliding port; 504, soldering port. DETAILED DESCRIPTION

[0034] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0035] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and cannot be understood as limiting the specific scope of protection of the present application.

[0036] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0037] The terms "including" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0038] like Figure 1-Figure 6 The anti-backflow air-conditioning one-way valve shown includes a pipe body, a valve core 4 , a valve seat 3 and a guide member 5 .

[0039] The valve seat 3 is fixedly welded and installed on the inner side of the tube body, and the valve core 4 is slidably arranged in the tube body. When the refrigerant flows in from the side where the valve core 4 is located, the valve core 4 will be pushed to slide, so that the valve core 4 squeezes the valve seat 3 to form a sealing structure, and the refrigerant cannot flow in this direction; conversely, when the refrigerant flows in from the side where the valve seat 3 is located, the valve core 4 will be pushed to slide, so that the valve core 4 is away from the valve seat 3, and a gap flow channel is formed between the valve core 4 and the valve seat 3 for the refrigerant to flow smoothly.

[0040] In this solution, a guide member 5 is also designed, which is fixedly welded and installed in the tube body, and the guide member 5 is located at the end of the valve core 4 away from the valve seat 3, that is, the valve core 4 is located between the guide member 5 and the valve seat 3, and the valve core 4 is slidably connected to the guide member 5 to ensure the stable sliding of the valve core 4.

[0041] Specifically, the guide member 5 is designed to be a cylindrical structure, so that when the valve core 4 and the guide member 5 slide, the valve core 4 is not affected by the inner wall of the tube body, so that when the tube body is produced, the parameters such as the accuracy, surface roughness, and wall thickness uniformity of the inner wall can be appropriately relaxed, which will not affect the smoothness of the guided movement of the valve core 4, thereby reducing the production cost of the air-conditioning one-way valve.

[0042] In one embodiment, the guide member 5 includes: an annular segment 501 and a plurality of second strip-shaped sliding members 502 .

[0043] On the other hand, the function is: since the guide member 5 is designed as a cylindrical structure and is fixedly installed on the inner side of the tube body, the outer side of the tube body has stronger pressure resistance and is not easy to deform (deformation will affect the sliding of the valve core 4), so that the backflow air-conditioning one-way valve can work in complex environments, such as car air-conditioning, mobile air-conditioning boxes, freezers, refrigerators, etc.

[0044] Among them, the outer side of the annular segment 501 is fixedly connected to the inner wall of the tube body, the second strip sliding member 502 is arranged along the axial direction of the annular segment 501, and one end of the second strip sliding member 502 is fixedly connected to the end of the annular segment 501, and a plurality of second strip sliding members 502 are arranged, and the plurality of second strip sliding members 502 are distributed in a ring array, and a second sliding opening 503 is formed between two adjacent second strip sliding members 502.

[0045] The tail of the valve core 4 has a large diameter ring section 403, and one end of the large diameter ring section 403 facing the guide member 5 is fixedly connected with a plurality of first strip sliding members 404 distributed in an annular array, and a first sliding opening 406 is formed between two adjacent first strip sliding members 404;

[0046] The second strip sliding member 502 is located on the inner side of the first sliding opening 406, and the first strip sliding member 404 is located on the inner side of the second sliding opening 503, i.e., two sliding matching parts (the second strip sliding member 502 and the first sliding opening 406, the first strip sliding member 404 and the second sliding opening 503), thereby ensuring that the valve core 4 can slide stably.

[0047] The second sliding opening 503 is designed as an arc-shaped opening with a larger inner side and a smaller outer side, so as to ensure that the valve core 4 is not prone to eccentricity after being matched with the guide member 5 (the first strip sliding member 404 is not prone to horizontal movement inside the second sliding opening 503).

[0048] In one embodiment, the head of the valve core 4 is a cone head 401 , the valve seat 3 is annular, and the cone head 401 is inserted into the inner hole of the valve seat 3 to form a sealing surface by extrusion.

[0049] In one embodiment, a small-diameter ring segment 402 is provided between the head and the tail of the valve core 4, and a side hole 405 is opened on the side of the small-diameter ring segment 402. After the refrigerant flows out from the gap between the cone head 401 and the center hole of the valve seat 3, it flows into the inner side of the small-diameter ring segment 402 through the side hole 405, and then flows out to the tube body port through the inner side of the tail of the valve core 4.

[0050] In one embodiment, a soldering opening 504 is provided on the outer side of the annular segment 501 , where soldering can be performed, and the solder is embedded in the soldering opening 504 , so that the welding between the annular segment 501 and the tube body is more stable.

[0051] In one embodiment, the tube body includes: a copper tube 1 and a welding joint.

[0052] The copper tube 1 includes an integrally formed pipe section 101 and a first joint section 102. The pipe section 101 is a large-diameter round tube, which is convenient for installing the valve core 4, the valve seat 3 and the guide 5 from the port. The first joint section 102 is a straw, which is suitable for connecting the pipeline system of the air conditioner. The welding joint 2 includes an integrally formed connecting section 202 and a second joint section 201. The connecting section 202 is fixedly connected to the inner side of the pipe section 101. The connecting section 202 is fixed to the inner side of the pipe section 101 by welding. The second joint section 201 is suitable for connecting the pipeline system of the air conditioner.

[0053] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. A backflow air conditioning one-way valve, comprising a tube body, a valve core installed in the tube body for sliding, and a valve seat fixedly installed in the tube body, characterized in that: Also includes: A guide member, the guide member is fixedly installed in the pipe body, and the guide member is located at an end of the valve core away from the valve seat, and the valve core is slidably connected to the guide member; The guide member is a cylinder structure.

2. The anti-backflow air conditioning one-way valve according to claim 1, characterized in that: The guide member comprises: An annular segment, the outer side of which is fixedly connected to the inner wall of the tube body; A second strip sliding member, the second strip sliding member is arranged along the axial direction of the annular segment, and one end of the second strip sliding member is fixedly connected to the end of the annular segment, a plurality of the second strip sliding members are arranged, and the plurality of the second strip sliding members are distributed in an annular array, and a second sliding opening is formed between two adjacent second strip sliding members; The tail of the valve core has a large diameter ring segment, and one end of the large diameter ring segment facing the guide member is fixedly connected to a plurality of first strip sliding members distributed in an annular array, and a first sliding opening is formed between two adjacent first strip sliding members; The second strip-shaped sliding member is located at the inner side of the first sliding opening, and the first strip-shaped sliding member is located at the inner side of the second sliding opening.

3. The anti-backflow air conditioning one-way valve according to claim 2, characterized in that: The head of the valve core is a cone head, and the valve seat is annular.

4. The anti-backflow air conditioning one-way valve according to claim 3, characterized in that: A small-diameter ring section is arranged between the head and the tail of the valve core, and a side hole is opened on the side surface of the small-diameter ring section.

5. The anti-backflow air conditioning one-way valve according to claim 2, characterized in that: The second sliding opening is an arc-shaped opening with a larger inner side and a smaller outer side.

6. The anti-backflow air conditioning one-way valve according to claim 2, characterized in that: A soldering opening is arranged on the outer side of the annular segment.

7. The anti-backflow air conditioning one-way valve according to claim 1, characterized in that: The tube body comprises: a copper tube and a welding joint; The copper tube includes an integrally formed tube section and a first joint section; The welding joint comprises an integrally formed connecting section and a second connecting section, wherein the connecting section is fixedly connected to the inner side of the pipe section.

Images