Reversing valve

Abstract

The utility model provides a reversing valve which is characterized in that a valve seat is provided with a first circulation pipeline and a second circulation pipeline, and the first circulation pipeline and the second circulation pipeline are arranged in a spaced mode; the driving valve disc is rotatably arranged on the valve seat, a mounting groove and a driving groove are formed in the driving valve disc, the mounting groove and the driving groove are formed in a spaced mode, and the driving groove is used for being communicated with the first circulation pipeline or the second circulation pipeline; the driven valve disc is installed in the installation groove, a driven groove with a downward opening is formed in the driven valve disc and used for being communicated with the first circulation pipeline or the second circulation pipeline, and the pressure in the driving groove is larger than that in the driven groove in the working state; the driving valve disc is further provided with a pressure applying channel, one end of the pressure applying channel is communicated with the mounting groove, and the other end of the pressure applying channel is communicated with the driving groove. By means of the technical scheme, the technical problem that in the prior art, impurities easily enter a driving cavity of a reversing valve, and consequently a product fails can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of reversing valves, and more specifically, to a reversing valve. Background Art

[0002] At present, the flow path switching valve in the prior art includes an active rotary valve disc and a driven rotary valve disc. The driven rotary valve disc is installed on the active rotary valve disc so that the active rotary valve disc drives the driven rotary valve disc to rotate, and is respectively communicated with different pipelines to realize the switching of the pipelines.

[0003] However, during the movement, there is a certain gap between the driven rotary valve disc and the valve seat, which will cause impurities in the refrigerant to enter the driving cavity through the gap, resulting in the gears in the driving cavity being stuck to each other and the product failing. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a reversing valve to solve the technical problem that impurities are likely to enter the driving cavity of the reversing valve in the prior art, resulting in product failure.

[0005] To achieve the above purpose, the utility model provides a reversing valve, including: a valve seat, on which a first flow pipeline and a second flow pipeline are arranged, and the first flow pipeline and the second flow pipeline are arranged at intervals; an active valve disc, rotatably arranged on the valve seat, with an installation groove and an active groove arranged on the active valve disc, the installation groove and the active groove are arranged at intervals, and the openings of the installation groove and the active groove both face downward, and the active groove is used to communicate with the first flow pipeline or the second flow pipeline; a driven valve disc, installed in the installation groove, with a downward-opening driven groove arranged on the driven valve disc, and the driven groove is used to communicate with the first flow pipeline or the second flow pipeline. In the working state, the pressure in the active groove is greater than the pressure in the driven groove; wherein, a pressure application passage is further arranged on the active valve disc, one end of the pressure application passage is communicated with the installation groove, and the other end of the pressure application passage is communicated with the active groove.

[0006] Further, the pressure application passage includes: a flow opening groove, the opening direction of the flow opening groove is downward, and the flow opening groove is located on the side wall between the installation groove and the active groove.

[0007] Further, there are multiple flow opening grooves, and the multiple flow opening grooves are arranged at intervals on the side wall between the installation groove and the active groove.

[0008] Further, the pressure application passage further includes: a flow hole, which penetrates the side wall between the installation groove and the active groove.

[0009] Further, there are multiple flow holes, and the multiple flow holes are arranged at intervals on the side wall between the installation groove and the active groove.

[0010] Further, a rotary mounting hole is provided on the active valve disc, and the pressure application passage is arranged at an interval from the rotary mounting hole.

[0011] Further, there are multiple pressure application passages, and the multiple pressure application passages are symmetrically arranged on both sides of the rotary mounting hole.

[0012] Further, the pressure application passage is located at the top of the side wall between the mounting groove and the active groove.

[0013] Further, a rotary mounting hole is provided on the active valve disc; the active groove has a first arc-shaped inner wall and a first top wall connected to each other. The first arc-shaped inner wall includes a first concave surface, an avoidance convex surface, and a second concave surface connected in sequence. The first concave surface, the avoidance convex surface, and the second concave surface are all close to the mounting groove. The avoidance convex surface is arranged at the periphery of the rotary mounting hole. There are multiple pressure application passages, and the inflow end of at least one pressure application passage is located on the first concave surface, and the inflow end of at least one pressure application passage is located on the second concave surface.

[0014] Further, the mounting groove is an open groove structure. The mounting groove has a second arc-shaped inner wall and a second top wall connected to each other. The second arc-shaped inner wall includes a third concave surface, an avoidance concave surface, and a fourth concave surface connected in sequence. The avoidance concave surface is arranged at the periphery of the rotary mounting hole. The avoidance concave surface is arranged opposite to the avoidance convex surface to avoid the rotary mounting hole. The third concave surface is arranged opposite to the first concave surface, and the fourth concave surface is arranged opposite to the second concave surface, so that the outflow end of the pressure application passage with the inflow end located on the first concave surface is located on the third concave surface, and the outflow end of the pressure application passage with the inflow end located on the second concave surface is located on the fourth concave surface.

[0015] Applying the technical solution of the present utility model, since a pressure application passage is provided between the active groove and the mounting groove, and the pressure in the active groove is greater than the pressure in the mounting groove, the driven valve disc can be pressed by the high-pressure fluid in the active groove, ensuring that the driven valve disc can closely adhere to the valve seat, thereby improving the sealing performance and preventing refrigerant impurities from entering the driving cavity. Therefore, through the technical solution provided by the utility model, the technical problem that impurities easily enter the driving cavity of the reversing valve in the prior art and cause product failure can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 Shows a structural schematic diagram of an active valve disc provided by an embodiment of the present utility model from an angle;

[0018] Figure 2Shows a schematic structural diagram of the active valve disc from another angle provided according to an embodiment of the present utility model;

[0019] Figure 3 Shows a schematic structural diagram of the active valve disc from another angle provided according to an embodiment of the present utility model;

[0020] Figure 4 Shows a schematic structural diagram of the driven valve disc from one angle provided according to an embodiment of the present utility model;

[0021] Figure 5 Shows a schematic structural diagram of the driven valve disc from another angle provided according to an embodiment of the present utility model;

[0022] Figure 6 Shows a schematic structural diagram of the valve seat provided according to an embodiment of the present utility model;

[0023] Figure 7 Shows a schematic structural diagram of the reversing valve provided according to an embodiment of the present utility model.

[0024] Among them, the above-mentioned drawings include the following reference numerals:

[0025] 10, valve seat; 21, first flow pipeline; 22, second flow pipeline; 30, active valve disc; 31, installation groove; 311, second arc-shaped inner wall; 3111, third concave surface; 3112, avoidance concave surface; 3113, fourth concave surface; 312, second top wall; 32, active groove; 321, first arc-shaped inner wall; 3211, first concave surface; 3212, avoidance convex surface; 3213, second concave surface; 322, first top wall; 33, pressure application passage; 34, rotary installation hole; 40, driven valve disc; 41, driven groove; 50, sleeve. Detailed implementation manners

[0026] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] Such as Figures 1 to 7As shown in the figure, an embodiment of the present utility model provides a reversing valve, which includes a valve seat 10, an active valve disc 30 and a driven valve disc 40. A first flow pipeline 21 and a second flow pipeline 22 are arranged on the valve seat 10, and the first flow pipeline 21 and the second flow pipeline 22 are arranged at intervals. The active valve disc 30 is rotatably arranged on the valve seat 10. An installation groove 31 and an active groove 32 are arranged on the active valve disc 30, and the installation groove 31 and the active groove 32 are arranged at intervals. The openings of the installation groove 31 and the active groove 32 both face downwards, and the active groove 32 is used to communicate with the first flow pipeline 21 or the second flow pipeline 22. The driven valve disc 40 is installed in the installation groove 31, and a downward-opening driven groove 41 is arranged on the driven valve disc 40. The driven groove 41 is used to communicate with the first flow pipeline 21 or the second flow pipeline 22. In the working state, the pressure in the active groove 32 is greater than the pressure in the driven groove 41. Among them, a pressure application passage 33 is further arranged on the active valve disc 30. One end of the pressure application passage 33 is communicated with the installation groove 31, and the other end of the pressure application passage 33 is communicated with the active groove 32.

[0028] By using the reversing valve provided in this embodiment, the active valve disc 30 presses on the driven valve disc 40, and the active valve disc 30 and the driven valve disc 40 are respectively butted with the first flow pipeline 21 and the second flow pipeline 22 one by one to form a flow path switching. Since a pressure application passage 33 is arranged between the active groove 32 and the installation groove 31, and the pressure in the active groove 32 is greater than the pressure in the installation groove 31, the driven valve disc 40 can be pressed by the high-pressure fluid in the active groove 32, ensuring that the driven valve disc 40 can closely adhere to the valve seat 10, thereby improving the sealing performance and preventing refrigerant impurities from entering the driving cavity. Therefore, through the reversing valve provided in this embodiment, the technical problem that impurities are likely to enter the driving cavity of the reversing valve in the prior art and cause product failure can be solved.

[0029] It should be noted that the "downward-opening driven groove 41" can be understood as the opening of the driven groove 41 facing the direction of the first flow pipeline 21 or the second flow pipeline 22; the "openings of the installation groove 31 and the active groove 32 both face downwards" can be understood as the openings of the installation groove 31 and the active groove 32 both facing the direction of the first flow pipeline 21 or the second flow pipeline 22.

[0030] Specifically, in this embodiment, both the first flow pipeline 21 and the second flow pipeline 22 are arranged below the valve seat 10, and the active valve disc 30 and the driven valve disc 40 are arranged on the side of the valve seat 10 away from the first flow pipeline 21 and the second flow pipeline 22. There may be two first flow pipelines 21, and there may also be two second flow pipelines 22. Four connecting through holes are arranged on the valve seat 10, and the two first flow pipelines 21 and the two second flow pipelines 22 are respectively installed at the four connecting through holes. During switching, the two first flow pipelines 21 can be in a flowing state, or the two second flow pipelines 22 can be in a flowing state.

[0031] Specifically, in one embodiment, the pressure application passage 33 includes a flow-through opening groove, the opening direction of the flow-through opening groove is downward, and the flow-through opening groove is located on the side wall between the installation groove 31 and the active groove 32. With such a structural arrangement, it is convenient for production and manufacturing, and the high-pressure fluid in the active groove 32 can smoothly enter the installation groove 31 and act on the driven valve disc 40.

[0032] Specifically, there may be a plurality of flow-through opening grooves, and the plurality of flow-through opening grooves are arranged at intervals on the side wall between the installation groove 31 and the active groove 32. With such a structural arrangement, it is convenient for the high-pressure liquid in the active groove 32 to smoothly enter the installation groove 31 through the plurality of flow-through opening grooves, so that the high pressure of the high-pressure fluid can stably act on the driven valve disc 40, so that the driven valve disc 40 can better adhere to the valve seat 10.

[0033] In another embodiment, the pressure application passage 33 further includes a flow-through hole, and the flow-through hole penetrates the side wall between the installation groove 31 and the active groove 32. With such a structural arrangement, the high-pressure fluid in the active groove 32 can smoothly enter the installation groove 31 and act on the driven valve disc 40.

[0034] Specifically, there are a plurality of flow-through holes, and the plurality of flow-through holes are arranged at intervals on the side wall between the installation groove 31 and the active groove 32. With such a structural arrangement, it is convenient for the high-pressure liquid in the active groove 32 to smoothly enter the installation groove 31 through the plurality of flow-through holes, so that the high pressure of the high-pressure fluid can stably act on the driven valve disc 40 to better improve the sealing performance.

[0035] In all of the above embodiments, a rotary installation hole 34 is provided on the active valve disc 30, the active valve disc 30 rotates around the rotary installation hole 34, and the pressure application passage 33 is arranged at an interval from the rotary installation hole 34. With such a structural arrangement, the pressure application passage 33 can be arranged to avoid the rotary installation hole 34, preventing the fluid (mainly refrigerant) in the pipeline from leaking.

[0036] Specifically, there may be a plurality of pressure application passages 33, and the plurality of pressure application passages 33 are symmetrically arranged on both sides of the rotary installation hole 34. With such a structural arrangement, it is convenient for the high pressure in the active groove 32 to stably act on the driven valve disc 40, improving the force uniformity of the driven valve disc 40, so that the driven valve disc 40 can more stably adhere to the valve seat 10 to better improve the sealing performance.

[0037] To facilitate better pressing the driven valve disc 40 tightly against the valve seat 10, preferably, the pressure application passage 33 is located at the top of the side wall between the mounting groove 31 and the active groove 32 to increase the downward pressing force on the valve seat 10. Specifically, the top here can be understood as "setting the pressure application passage 33 at a position close to the top end of the side wall between the mounting groove 31 and the active groove 32".

[0038] Specifically, in the above embodiment, a rotary mounting hole 34 is provided on the active valve disc 30. The active groove 32 has a first arc-shaped inner wall 321 and a first top wall 322 connected to each other. The first arc-shaped inner wall 321 includes a first concave surface 3211, an avoidance convex surface 3212, and a second concave surface 3213 connected in sequence. The first concave surface 3211, the avoidance convex surface 3212, and the second concave surface 3213 are all arranged close to the mounting groove 31. The avoidance convex surface 3212 is arranged at the periphery of the rotary mounting hole 34. There are multiple pressure application passages 33, and the inflow ends of at least one pressure application passage 33 are located on the first concave surface 3211, and the inflow ends of at least one pressure application passage 33 are located on the second concave surface 3213. With such a structural arrangement, it is convenient to optimize the positions of the inflow ends of the pressure application passages 33, so that it is convenient to better apply high pressure on the driven valve disc 40, improve the force uniformity of the driven valve disc 40, and thus enable the driven valve disc 40 to be stably pressed against the valve seat 10.

[0039] Specifically, the first arc-shaped inner wall 321 is arranged around the periphery of the first top wall 322.

[0040] Specifically, the mounting groove 31 is an open groove structure. The mounting groove 31 has a second arc-shaped inner wall 311 and a second top wall 312 connected to each other. The second arc-shaped inner wall 311 includes a third concave surface 3111, an avoidance concave surface 3112, and a fourth concave surface 3113 connected in sequence. The avoidance concave surface 3112 is arranged at the periphery of the rotary mounting hole 34, and the avoidance concave surface 3112 is arranged opposite to the avoidance convex surface 3212 to avoid the rotary mounting hole 34. The third concave surface 3111 is arranged opposite to the first concave surface 3211, and the fourth concave surface 3113 is arranged opposite to the second concave surface 3213, so that the outflow ends of the pressure application passages 33 with the inflow ends located on the first concave surface 3211 are located on the third concave surface 3111, and the outflow ends of the pressure application passages 33 with the inflow ends located on the second concave surface 3213 are located on the fourth concave surface 3113. With such a structural arrangement, it is convenient to optimize the positions of the outflow ends of the pressure application passages 33, so that it is convenient to better apply high pressure on the driven valve disc 40, improve the force uniformity of the driven valve disc 40, reduce the flow resistance of the fluid in the pressure application passages 33, and thus enable the driven valve disc 40 to be better stably pressed against the valve seat 10.

[0041] Specifically, the second arc-shaped inner wall 311 is disposed around at least a part of the periphery of the second top wall 312 to form an open groove structure. Specifically, the third concave surface 3111, the avoidance concave surface 3112, and the fourth concave surface 3113 are connected in sequence to form the second arc-shaped inner wall 311.

[0042] The reversing valve in this embodiment further includes a sleeve 50 sleeved on the valve seat 10. A driving cavity is formed between the sleeve 50 and the valve seat 10, and a driving gear structure is arranged in the driving cavity.

[0043] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: By connecting the installation groove and the active groove, the pressure in the installation groove and the pressure in the active groove can be balanced, so as to stably abut the driven valve disc against the valve seat, thereby improving the sealing performance.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0045] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present application. At the same time, it should be understood that for the sake of convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0046] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0047] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to cover different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the figure is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0048] In addition, it should be noted that using words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without further statement, the above words have no special meaning. Therefore, it should not be construed as a limitation on the protection scope of the present application.

[0049] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A reversing valve, characterized in that, Comprising: A valve seat (10) provided with a first flow passage (21) and a second flow passage (22), the first flow passage (21) and the second flow passage (22) being spaced apart. A main valve disc (30) rotatably provided on the valve seat (10), the main valve disc (30) being provided with a mounting groove (31) and a main groove (32), the mounting groove (31) and the main groove (32) being spaced apart, the openings of the mounting groove (31) and the main groove (32) both facing downward, the main groove (32) being adapted to communicate with the first flow passage (21) or the second flow passage (22). A driven valve disc (40) mounted in the mounting groove (31), the driven valve disc (40) being provided with a downwardly opening driven groove (41), the driven groove (41) being adapted to communicate with the first flow passage (21) or the second flow passage (22), and the pressure in the main groove (32) being greater than the pressure in the driven groove (41) during the working state. Wherein, a pressure application passage (33) is further provided on the main valve disc (30), one end of the pressure application passage (33) communicating with the mounting groove (31) and the other end of the pressure application passage (33) communicating with the main groove (32).

2. The reversing valve according to claim 1, characterized in that, The pressure application passage (33) includes: A flow opening groove with its opening direction downward, the flow opening groove being located on the side wall between the mounting groove (31) and the main groove (32).

3. The reversing valve according to claim 2, characterized in that, There are a plurality of the flow opening grooves, and the plurality of flow opening grooves are spaced apart on the side wall between the mounting groove (31) and the main groove (32).

4. The reversing valve according to claim 1, characterized in that, The pressure application passage (33) further includes: A flow hole penetrating the side wall between the mounting groove (31) and the main groove (32).

5. The reversing valve according to claim 4, characterized in that, There are a plurality of the flow holes, and the plurality of flow holes are spaced apart on the side wall between the mounting groove (31) and the main groove (32).

6. The directional control valve according to claim 1, wherein, A rotary mounting hole (34) is provided on the main valve disc (30), and the pressure application passage (33) is spaced apart from the rotary mounting hole (34).

7. The directional control valve according to claim 6, wherein There are a plurality of the pressure application passages (33), and the plurality of pressure application passages (33) are symmetrically arranged on both sides of the rotary mounting hole (34).

8. The reversing valve according to claim 1, characterized in that, The pressure application passage (33) is located at the top of the side wall between the mounting groove (31) and the main groove (32).

9. The reversing valve according to claim 1, characterized in that, A rotary mounting hole (34) is provided on the main valve disc (30); The active groove (32) has a first arc-shaped inner wall (321) and a first top wall (322) connected to each other. The first arc-shaped inner wall (321) includes a first concave surface (3211), an avoidance convex surface (3212), and a second concave surface (3213) connected in sequence. The first concave surface (3211), the avoidance convex surface (3212), and the second concave surface (3213) are all arranged close to the installation groove (31). The avoidance convex surface (3212) is arranged at the periphery of the rotary installation hole (34). There are multiple pressure application passages (33), and the inflow end of at least one pressure application passage (33) is located on the first concave surface (3211), and the inflow end of at least one pressure application passage (33) is located on the second concave surface (3213).

10. The reversing valve according to claim 9, characterized in that, The installation groove (31) is an open groove structure. The installation groove (31) has a second arc-shaped inner wall (311) and a second top wall (312) connected to each other. The second arc-shaped inner wall (311) includes a third concave surface (3111), an avoidance concave surface (3112), and a fourth concave surface (3113) connected in sequence. The avoidance concave surface (3112) is arranged at the periphery of the rotary installation hole (34). The avoidance concave surface (3112) is arranged opposite to the avoidance convex surface (3212) to avoid the rotary installation hole (34). The third concave surface (3111) is arranged opposite to the first concave surface (3211), and the fourth concave surface (3113) is arranged opposite to the second concave surface (3213), so that the outflow end of the pressure application passage (33) with the inflow end located on the first concave surface (3211) is located on the third concave surface (3111), and the outflow end of the pressure application passage (33) with the inflow end located on the second concave surface (3213) is located on the fourth concave surface (3113).

Images