Reversing valve

Abstract

The utility model relates to the technical field of fluid control, in particular to a reversing valve. The reversing valve comprises a valve body and a valve element, the valve body is provided with a valve cavity and a plurality of valve holes, the valve holes are distributed along the circumferential side of the valve cavity at intervals and communicated with the valve cavity, and the valve element is rotatably installed in the valve cavity and used for being communicated with the different valve holes. The reversing valve further comprises an elastic piece and a first sealing piece, the elastic piece and the first sealing piece are both installed in the valve hole, a first groove which is sunken in the direction away from the axis of the first groove is formed in the inner wall of the valve hole, one end of the elastic piece is clamped in the first groove, and the other end of the elastic piece abuts against the first sealing piece. The elastic piece can apply acting force towards the direction close to the valve element to the first sealing piece so that the first sealing piece can be tightly attached to the valve element. According to the reversing valve, the problem that the sealing performance between a valve element and a valve hole of an existing reversing valve is insufficient is solved.

Description

Technical Field

[0001] The present application relates to the technical field of fluid control, and in particular to a reversing valve. Background Art

[0002] At present, in vehicle air-conditioning systems, a rotary reversing valve is often used to adjust the flow direction of the refrigerant to achieve switching between the cooling mode and the heating mode of the air-conditioning system.

[0003] The reversing valve in the related art includes a valve body and a valve core. The valve body is provided with a valve cavity and a plurality of valve holes. The valve core is rotatably arranged in the valve cavity to connect different valve holes, thereby realizing the switching of the flow path. However, the sealing effect between the valve core and the valve hole in the existing structure is poor, and the refrigerant and other media are easy to leak from the gap between the valve core and the valve hole, thereby greatly affecting the safety of the operation of the air conditioning system. Utility Model Content

[0004] Based on this, it is necessary to provide a reversing valve to solve the problem of insufficient sealing performance between the valve core and the valve hole of the existing reversing valve.

[0005] The present application provides a reversing valve, which includes a valve body and a valve core, the valve body is provided with a valve cavity and a plurality of valve holes, the plurality of valve holes are spaced apart along the circumference of the valve cavity and are connected with the valve cavity, the valve core is rotatably installed in the valve cavity for connecting different valve holes; the reversing valve also includes an elastic member and a first sealing member, the elastic member and the first sealing member are both installed in the valve hole, wherein the inner wall of the valve hole is provided with a first groove which is recessed in a direction away from its own axis, one end of the elastic member is clamped in the first groove, and the other end is abutted against the first sealing member, and the elastic member can apply a force on the first sealing member in a direction close to the valve core so that the first sealing member fits tightly against the valve core.

[0006] In one embodiment, the elastic member includes an elastic body and a retaining ring which are separately arranged, the retaining ring is retained in the first groove, and the retaining ring at least partially protrudes from the inner wall of the valve hole, one end of the elastic body is abutted against the first sealing member, and the other end is abutted against the retaining ring.

[0007] In one of the embodiments, a notch is provided on the clamping ring, and the notch is used to provide a deformation amount for the deformation of the clamping ring.

[0008] In one embodiment, the elastic body is configured to gradually shrink from an end close to the clamping ring to an end away from the clamping ring.

[0009] In one embodiment, the elastic body is configured as a butterfly spring.

[0010] In one embodiment, the elastic member includes a main body and a connecting portion, one end of the main body is abutted against the first sealing member, and the other end is connected to the connecting portion, and the connecting portion is clamped in the first groove.

[0011] In one embodiment, the main body and the connecting portion are an integrated structure.

[0012] In one embodiment, the outer wall of the first seal is provided with a second groove which is recessed toward the axis of the first seal, and the reversing valve further includes a second seal which is installed in the second groove and seals with the inner wall of the second groove, and at least a portion of the second seal protrudes out of the second groove to seal against the inner wall of the valve hole.

[0013] In one embodiment, the outer surface of the valve core and the surface of the first sealing member close to one end of the valve core are arranged in an arc shape with the same arc.

[0014] In one embodiment, the first sealing member is provided with a flow hole, and the valve core is provided with a plurality of flow channels. As the valve core rotates, the flow hole can be connected with different flow channels; wherein the inner diameters of the flow hole and the flow channel are equal.

[0015] Compared with the prior art, the reversing valve provided by the present application can, when assembling the various components, sequentially place the first sealing member and the elastic member into the valve hole through the opening at one end of the valve hole away from the valve core, and achieve firm installation of the elastic member through the snap-fitting between the elastic member and the first groove, thereby improving the overall assembly efficiency. At the same time, the elastic member can exert a force on the first sealing member in the direction close to the valve core, so that the first sealing member fits tightly with the valve core, thereby effectively improving the sealing performance between the valve core and the valve hole, and preventing leakage. Moreover, even if the first sealing member is worn out after long-term operation, the elastic force of the elastic member can be used to compensate, further ensuring a good sealing effect with the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A cross-sectional view of a reversing valve according to an embodiment of the present application;

[0018] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0019] Figure 3 A schematic diagram of the structure of an elastic member according to an embodiment of the present application;

[0020] Figure 4 A schematic diagram of the structure of a snap ring according to an embodiment of the present application;

[0021] Figure 5 A cross-sectional view from another direction of a reversing valve according to an embodiment of the present application.

[0022] The symbols in the figure mean the following:

[0023] 100, reversing valve; 10, valve core; 101, flow channel; 101a, first flow channel; 101b, second flow channel; 20, valve body; 201, valve cavity; 2011, debris removal gap; 2012, debris containing space; 202, valve hole; 202a, first valve hole; 202b, second valve hole; 202c, third valve hole; 202d, fourth valve hole; 2021, first groove; 30, sealing assembly; 301, flow hole; 31, elastic member; 311, elastic body; 3111, upright section; 3112, abutting section; 312, retaining ring; 3121, notch; 32, first sealing member; 3201, second groove; 33, second sealing member; 40, driving mechanism; 41, motor coil; 42, motor rotor; 50, speed reduction mechanism; 51, gear set; 52, fixing plate. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0025] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0029] At present, in vehicle air-conditioning systems, a rotary reversing valve is often used to adjust the flow direction of the refrigerant to achieve switching between the cooling mode and the heating mode of the air-conditioning system.

[0030] The reversing valve in the related art includes a valve body and a valve core. The valve body is provided with a valve cavity and a plurality of valve holes. The valve core is rotatably arranged in the valve cavity to connect different valve holes, thereby realizing the switching of the flow path. However, the sealing effect between the valve core and the valve hole in the existing structure is poor, and the refrigerant and other media are easy to leak from the gap between the valve core and the valve hole, thereby greatly affecting the safety of the operation of the air conditioning system.

[0031] See also Figure 1-Figure 5 In order to solve the problem of insufficient sealing performance between the valve core and the valve hole of the existing reversing valve, the present application provides a reversing valve 100, which is mainly used in a vehicle air conditioning system. The reversing valve 100 includes a valve body 20 and a valve core 10. The valve body 20 is provided with a valve cavity 201 and a plurality of valve holes 202. The plurality of valve holes 202 are distributed at intervals along the circumference of the valve cavity 201 and communicate with the valve cavity 201. The valve core 10 is rotatably installed in the valve cavity 201 to communicate with different valve holes 202.

[0032] Specifically, the valve body 20 of the present application is provided with four valve holes 202, and the four valve holes 202 are distributed in a cross shape. A plurality of flow channels 101 can be provided in the valve core 10. The present application specifically provides two flow channels 101, and they are defined as the first flow channel 101a and the second flow channel 101b, respectively, wherein the two openings of the first flow channel 101a and the two openings of the second flow channel 101b are distributed in a cross shape to match the valve holes 202, and the first flow channel 101a and the second flow channel 101b are both basically extended in an arc shape. In this way, by rotating the valve core 10 around its own axis, the first flow channel 101a and the second flow channel 101b on the valve core 10 can connect to different valve holes 202, thereby realizing the switching between the cooling mode and the heating mode.

[0033] Please continue reading Figure 1 The reversing valve 100 provided in the present application further includes a sealing assembly 30, which includes an elastic member 31 and a first sealing member 32, and both the elastic member 31 and the first sealing member 32 are installed in the valve hole 202. The inner wall of the valve hole 202 is provided with a first groove 2021 that is recessed in a direction away from the axis of the valve hole 202, one end of the elastic member 31 is clamped in the first groove 2021, and the other end is abutted against the first sealing member 32, and the elastic member 31 can exert a force on the first sealing member 32 in a direction close to the valve core 10, so that the first sealing member 32 and the valve core 10 are closely fitted.

[0034] It is understandable that when assembling the various components of the reversing valve 100 of the present application, the first sealing member 32 and the elastic member 31 can be sequentially placed into the valve hole 202 through the opening of the valve hole 202 away from the end of the valve core 10, and the elastic member 31 can be firmly installed through the snap-fitting between the elastic member 31 and the first groove 2021, thereby improving the overall assembly efficiency. At the same time, the elastic member 31 can exert a force on the first sealing member 32 in the direction close to the valve core 10, so that the first sealing member 32 fits tightly with the valve core 10, thereby effectively improving the sealing performance between the valve core 10 and the valve hole 202, and preventing leakage. In addition, even if the first sealing member 32 is worn after long-term operation, the elastic force of the elastic member 31 can be used to compensate, further ensuring a good sealing effect with the valve core 10.

[0035] It should be noted that the first sealing member 32 is provided with a flow hole 301 for the circulation of the refrigerant. As the valve core 10 rotates, the flow hole 301 can be connected with different flow channels 101 on the valve core 10, thereby achieving smooth flow of the refrigerant. In particular, the present application preferably sets the inner diameters of the flow hole 301 and the flow channel 101 to be equal to improve the coordination effect and sealing performance of the two.

[0036] In order to further improve the sealing effect between the first sealing member 32 and the valve core 10, in one embodiment, the outer surface of the valve core 10 and the surface of the first sealing member 32 near one end of the valve core 10 are arranged in an arc shape with the same arc. In this way, the fitting seal between the valve core 10 and the first sealing member 32 is facilitated, and the rotation of the valve core 10 is also facilitated.

[0037] Furthermore, in one embodiment, the first sealing member 32 at least partially protrudes from the opening of the valve hole 202 near one end of the valve core 10, that is, the valve core 10 only cooperates with the first sealing member 32 in a movable seal, and is spaced from the inner wall of the valve cavity 201 in the radial direction of the valve core 10. In this way, not only can a good fit effect between the first sealing member 32 and the valve core 10 be further ensured, but also an impurity removal gap 2011 can be formed between the radial side wall of the valve core 10 and the inner wall of the valve cavity 201, so that when the valve core 10 rotates, impurities mixed in during the flow of the refrigerant are brought into the impurity removal gap 2011, so as to avoid the impurities from affecting the rotation of the valve core 10, thereby greatly improving the reliability of the valve core 10.

[0038] Since the reversing valve 100 provided in the present application is usually installed in the vertical direction, that is, the axial direction of the valve core 10 is parallel to the gravity direction, the surface of the valve core 10 at one axial end can be spaced apart from the inner wall of the valve cavity 201 to form an impurity accommodating space 2012. The impurity accommodating space 2012 is connected to the impurity removal gap 2011, which is conducive to the smooth storage of impurities in the impurity removal gap 2011 in the impurity accommodating space 2012, and further reduces the adverse effects of impurities on the rotation of the valve core 10.

[0039] In one embodiment, if Figure 2 As shown, the outer wall of the first sealing member 32 is provided with a second groove 3201 that is recessed toward the direction close to the axis thereof. The reversing valve 100 further includes a second sealing member 33, which is installed in the second groove 3201 and seals with the inner wall of the second groove 3201, and at least part of the second sealing member 33 protrudes from the second groove 3201 to seal against the inner wall of the valve hole 202. In this way, the second sealing member 33 can seal the gap between the first sealing member 32 and the inner wall of the valve hole 202, thereby greatly reducing the probability of refrigerant leakage from the gap.

[0040] In one embodiment, if Figure 3 and Figure 4 As shown, the elastic member 31 includes an elastic body 311 and a snap ring 312 which are separately arranged. The snap ring 312 is clamped in the first groove 2021, and the snap ring 312 at least partially protrudes from the inner wall of the valve hole 202. One end of the elastic body 311 is abutted against the first sealing member 32, and the other end is abutted against the snap ring 312. The snap ring 312 stops and limits the elastic body 311, so that the reliability of the installation of the elastic body 311 in the valve body 20 can be ensured.

[0041] Further, in one embodiment, if Figure 4 As shown, the snap ring 312 is provided with a notch 3121, which is used to provide a deformation amount for the deformation of the snap ring 312. In this way, when the snap ring 312 is inserted into the first groove 2021, the deformation of the notch 3121 can be used to reduce the difficulty of installing the snap ring 312, thereby facilitating the installation of the snap ring 312.

[0042] In order to reduce the risk of the elastic body 311 being separated from the snap ring 312, in one embodiment, the elastic body 311 is gradually contracted from one end close to the snap ring 312 to one end away from the snap ring 312. In this way, a stable contact between the elastic body 311 and the snap ring 312 can be achieved, which greatly improves the installation firmness of the elastic body 311.

[0043] In one embodiment, the elastic body 311 is configured as a butterfly spring, and the overall axial dimension of the butterfly spring is relatively small, which is beneficial to reducing the size of the valve body 20 used to install the elastic body 311, thereby reducing costs, and the force on the first seal 32 is more uniform, which can effectively improve the sealing effect between the first seal 32 and the valve core 10.

[0044] Specifically, the butterfly spring has a plurality of elastic sheets arranged at intervals along the circumferential direction. Moreover, each elastic sheet includes an upright section 3111 and an abutting section 3112, wherein the abutting section 3112 is connected to one end of the upright section 3111 and is arranged at an angle to the upright section 3111. Thus, when the abutting section 3112 abuts against the first sealing member 32, the elastic sheet can be deformed by force, and the elastic sheet can be elastically restored to apply a stable force to the first sealing member 32, thereby preventing the first sealing member 32 from generating a gap with the valve core 10 due to factors such as friction and wear.

[0045] In another embodiment, the elastic member 31 includes a main body (not shown) and a connecting portion (not shown), one end of the main body is abutted against the first sealing member 32, and the other end is connected to the connecting portion, wherein the connecting portion is clamped in the first groove 2021. In this way, the clamping fit between the elastic member 31 and the first groove 2021 can also be satisfied, thereby achieving the installation of the elastic member 31, and at the same time, further reducing the risk of the elastic member 31 and the first groove 2021 being separated. Here, the main body can adopt the same structural features as the elastic body 311 to reduce the installation size.

[0046] Specifically, in this embodiment, the main body and the connecting part are an integrated structure to improve the overall processing efficiency of the elastic member 31 and reduce the connection steps. However, it is not limited thereto. In other embodiments, the main body and the connecting part can also be fixed by welding, which can be reasonably set according to actual needs.

[0047] In one embodiment, if Figure 1As shown, the reversing valve 100 also includes a driving mechanism 40 and a reduction mechanism 50. The driving mechanism 40 includes a motor coil 41 and a motor rotor 42 magnetically matched with the motor coil 41. The motor coil 41 is detachably mounted on the outside of the valve body 20, and the motor rotor 42 is installed in the valve body 20 and can rotate under the drive of the motor coil 41.

[0048] Furthermore, the speed reduction mechanism 50 is installed in the valve body 20, and the speed reduction mechanism 50 includes a gear set 51 and a fixing plate 52, wherein the gear set 51 is installed on the fixing plate 52 and connected to the valve body 20 through the fixing plate 52. The gear set 51 is respectively connected to the output shaft of the motor rotor 42 and the valve core 10, so as to drive the valve core 10 to rotate through the meshing transmission of multiple gears on the gear set 51, and the setting of the speed reduction mechanism 50 can increase the driving torque of the valve core.

[0049] The reversing valve 100 provided in the present application is mainly used in a vehicle air-conditioning system, wherein the vehicle air-conditioning system also includes a compressor, an outdoor heat exchanger and an indoor heat exchanger. The reversing valve 100 is used to change the flow direction of the refrigerant flowing out of the compressor to switch the cooling and heating modes of the system.

[0050] For ease of description, the present application defines the four valve holes 202 distributed in the circumferential direction on the valve body 20 of the reversing valve 100 as the first valve hole 202a, the second valve hole 202b, the third valve hole 202c and the fourth valve hole 202d. Figure 5 As shown, the first valve hole 202a can be connected to the second valve hole 202b through the first flow channel 101a, and at this time, the third valve hole 202c can be connected to the fourth valve hole 202d through the second flow channel 101b. Alternatively, the first valve hole 202a is connected to the fourth valve hole 202d through the second flow channel 101b, and at this time, the third valve hole 202c can be connected to the second valve hole 202b through the first flow channel 101a.

[0051] Here, the first valve hole 202a is connected to the outlet of the compressor, the third valve hole 202c is connected to the inlet of the compressor, the second valve hole 202b is connected to the outdoor heat exchanger, and the fourth valve hole 202d is connected to the indoor heat exchanger.

[0052] When the vehicle air-conditioning system is in the cooling state, the high-pressure refrigerant discharged from the compressor outlet enters the first flow channel 101a from the first valve hole 202a on the reversing valve 100, then flows out from the second valve hole 202b and exchanges heat in the outdoor heat exchanger and the indoor heat exchanger in turn, then flows out of the reversing valve 100 through the fourth valve hole 202d, the second flow channel 101b, and the third valve hole 202c of the reversing valve 100 and enters the compressor from the compressor inlet.

[0053] When the vehicle air-conditioning system is in the heating state, the high-pressure refrigerant discharged from the compressor outlet enters the second flow channel 101b from the first valve hole 202a on the reversing valve 100, then flows out from the fourth valve hole 202d and exchanges heat in the in-vehicle heat exchanger and the out-vehicle heat exchanger in turn, then flows out of the reversing valve 100 through the second valve hole 202b, the first flow channel 101a, and the third valve hole 202c of the reversing valve 100 and enters the compressor from the compressor inlet.

[0054] The rotation of the valve core 10 is realized by the driving mechanism 40 and the speed reduction mechanism 50. Specifically, the motor coil 41 is energized to drive the motor rotor 42 to rotate clockwise or counterclockwise. At this time, the output shaft of the motor rotor 42 can drive the gear set 51 to rotate, thereby driving the valve core 10 to rotate accordingly, and realize the switching of the flow path. In addition, the position of the valve core 10 when the vehicle air-conditioning system is in the cooling state is defined as the initial position of the valve core 10. When the vehicle air-conditioning system is switched to the heating state, since the two adjacent valve holes 202 are vertically arranged, the driving mechanism 40 and the speed reduction mechanism 50 only need to drive the valve core 10 to rotate 90° to realize the switching of the flow path. When the vehicle air-conditioning system switches back to the cooling state, the driving mechanism 40 and the speed reduction mechanism 50 control the valve core 10 to rotate 90°, so as to control the valve core 10 to return to the initial position.

[0055] In order to ensure the accuracy of the rotation angle of the valve core 10, a limiting mechanism may be provided between the speed reduction mechanism 50 and the valve core 10, for example, the limiting mechanism may be achieved by the cooperation of an arc groove and a limiting column.

[0056] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. A reversing valve, comprising a valve body (20) and a valve core (10), wherein the valve body (20) is provided with a valve cavity (201) and a plurality of valve holes (202), wherein the plurality of valve holes (202) are distributed at intervals along the circumference of the valve cavity (201) and are in communication with the valve cavity (201), and the valve core (10) is rotatably mounted in the valve cavity (201) and is used to communicate with different valve holes (202); It is characterized in that The reversing valve further comprises an elastic member (31) and a first sealing member (32), wherein the elastic member (31) and the first sealing member (32) are both installed in the valve hole (202), wherein the inner wall of the valve hole (202) is provided with a first groove (2021) which is recessed in a direction away from the valve hole's axis, one end of the elastic member (31) is clamped in the first groove (2021), and the other end is abutted against the first sealing member (32), and the elastic member (31) can exert a force on the first sealing member (32) in a direction close to the valve core (10), so that the first sealing member (32) and the valve core (10) are tightly fitted.

2. The reversing valve according to claim 1, characterized in that: The elastic member (31) comprises an elastic body (311) and a snap ring (312) which are separately arranged. The snap ring (312) is clamped in the first groove (2021), and the snap ring (312) at least partially protrudes from the inner wall of the valve hole (202). One end of the elastic body (311) is abutted against the first sealing member (32), and the other end is abutted against the snap ring (312).

3. The reversing valve according to claim 2, characterized in that: The clamping ring (312) is provided with a notch (3121), and the notch (3121) is used to provide a deformation amount for the deformation of the clamping ring (312).

4. The reversing valve according to claim 2, characterized in that: The elastic body (311) is arranged to gradually shrink from an end close to the clamping ring (312) to an end away from the clamping ring (312).

5. The reversing valve according to claim 2, characterized in that: The elastic body (311) is configured as a butterfly spring.

6. The reversing valve according to claim 1, characterized in that: The elastic member (31) comprises a main body and a connecting portion, one end of the main body is abutted against the first sealing member (32), and the other end is connected to the connecting portion, and the connecting portion is clamped in the first groove (2021).

7. The reversing valve according to claim 6, characterized in that: The main body and the connecting part are an integrated structure.

8. The reversing valve according to claim 1, characterized in that: The outer wall of the first sealing member (32) is provided with a second groove (3201) which is recessed in a direction close to its own axis. The reversing valve also includes a second sealing member (33). The second sealing member (33) is installed in the second groove (3201) and is sealingly matched with the inner wall of the second groove (3201). At least part of the second sealing member (33) protrudes from the second groove (3201) so as to be sealingly abutted against the inner wall of the valve hole (202).

9. The reversing valve according to claim 1, characterized in that: The outer surface of the valve core (10) and the surface of the first sealing member (32) close to one end of the valve core (10) are arranged in an arc shape with the same arc.

10. The reversing valve according to claim 1, characterized in that: The first sealing member (32) is provided with a flow hole (301), and the valve core (10) is provided with a plurality of flow channels (101), and as the valve core (10) rotates, the flow hole (301) can be connected with different flow channels (101); Wherein, the inner diameters of the circulation hole (301) and the flow channel (101) are equal.

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