Directional valve

Abstract

The present application provides a reversing valve, comprising a valve body and a valve core. The valve body has a valve cavity and a first valve port, a second valve port, a third valve port and a fourth valve port connected to the valve cavity; the valve core is slidably installed in the valve cavity, and the valve core has a first channel group and a second channel group arranged at intervals from each other along the sliding direction of the valve core, the first channel group includes a first channel and a second channel separated from each other, and the second channel group includes a third channel and a fourth channel separated from each other; when the valve core moves to the first position, the first valve port is connected to the fourth valve port through the first channel, and the second valve port is connected to the third valve port through the second channel; when the valve core moves to the second position, the first valve port is connected to the second valve port through the third channel, and the third valve port is connected to the fourth valve port through the fourth channel. The reversing valve of the present application will not cause gas blowby, stuck, poor reversing and the like, and has the advantages of lower failure rate, reliable and fast reversing and the like.

Description

Technical Field

[0001] The present application belongs to the field of valve technology, and more specifically, relates to a reversing valve. Background Art

[0002] The four-way valve is a control valve with four valve ports. The four-way valve is an indispensable component in refrigeration equipment such as air conditioners. The working principle of the existing four-way valve is that when the solenoid valve coil is in the power-off state, the pilot slide valve moves to the left under the drive of the right compression spring, and the high-pressure gas enters the capillary tube and then enters the right-end piston chamber. On the other hand, the gas in the left-end piston chamber is discharged. Due to the pressure difference between the two ends of the piston, the piston and the main slide valve move to the left, so that the exhaust pipe is connected to the outdoor unit pipe, and the other two pipes are connected, forming a refrigeration cycle. When the solenoid valve coil is in the power-on state, the pilot slide valve overcomes the tension of the compression spring under the action of the magnetic force generated by the solenoid coil and moves to the right. The high-pressure gas enters the capillary tube and then enters the left-end piston chamber. On the other hand, the gas in the right-end piston chamber is discharged. Due to the pressure difference between the two ends of the piston, the piston and the main slide valve move to the right, so that the exhaust pipe is connected to the indoor unit pipe, and the other two pipes are connected, forming a heating cycle.

[0003] When the main slide valve is in the middle position of the refrigeration cycle and the heating cycle, the four-way valve has three connecting pipes that ventilate each other to generate an intermediate flow. Although this design can make the refrigerant in the high-pressure pipe flow directly back to the low-pressure pipe to relieve the pressure, it is precisely because of the existence of the intermediate flow that the pressure difference in the four-way valve is rapidly reduced, forming an instantaneous gas blowby state, making the pressure difference less than the friction force that pushes the piston and the main slide valve to move, causing the main slide valve to get stuck and other poor switching faults. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a reversing valve to solve the technical problems existing in the prior art such as valve core gas leakage, jamming, incomplete reversing, etc. when the reversing valve is switched.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] A reversing valve is provided, comprising:

[0007] A valve body having a valve cavity and a first valve port, a second valve port, a third valve port and a fourth valve port connected to the valve cavity;

[0008] A valve core is slidably mounted in the valve cavity, the valve core having a first channel group and a second channel group spaced apart from each other along a sliding direction of the valve core, the first channel group comprising a first channel and a second channel spaced apart from each other, the second channel group comprising a third channel and a fourth channel spaced apart from each other,

[0009] When the valve core moves to the first position, the first valve port is connected to the fourth valve port through the first channel, and the second valve port is connected to the third valve port through the second channel; when the valve core moves to the second position, the first valve port is connected to the second valve port through the third channel, and the third valve port is connected to the fourth valve port through the fourth channel.

[0010] As a further improvement of the above technical solution:

[0011] Optionally, it further includes a plurality of elastic components, each of which is mounted on the valve body corresponding to each valve port, and each of the elastic components is in elastic contact with the valve core.

[0012] Optionally, the elastic component includes an elastic member and a guide sleeve, the guide sleeve is in contact with the valve core, a first end of the elastic member is connected to the guide sleeve, and a second end of the elastic member is connected to the valve body.

[0013] Optionally, the contact between the guide sleeve and the valve core is planar contact.

[0014] Optionally, a protrusion is provided at one end of the guide sleeve, and a groove corresponding to the protrusion is provided on the valve core. When the valve core is located at the first position or the second position, the protrusion is located in the groove, and the protrusion and the groove are spaced apart from each other.

[0015] Optionally, the valve core has a stop valve core section arranged between the first channel group and the second channel group, and when the valve core moves to a third position between the first position and the second position, the first valve port, the second valve port, the third valve port and the fourth valve port are cut off from each other.

[0016] Optionally, the first valve port, the second valve port, the third valve port and the fourth valve port are sequentially arranged at intervals around the valve body.

[0017] Optionally, the valve core includes a first partition wall arranged between the first channel and the second channel, and a second partition wall arranged between the third channel and the fourth channel, the first partition wall is arranged at an angle to the axis of the first valve port and the axis of the third valve port, and the second partition wall is arranged at an angle to the axis of the first valve port and the axis of the third valve port.

[0018] Optionally, it further includes a constant pressure channel provided on the valve body, wherein the constant pressure channel passes from the first end of the valve core to the second end of the valve core along the sliding direction of the valve core.

[0019] The present application also provides a reversing valve, comprising:

[0020] A valve body having a valve cavity and a first valve port, a second valve port and a third valve port communicating with the valve cavity;

[0021] A valve core is slidably mounted in the valve cavity, wherein the valve core has a first channel and a third channel which are arranged at intervals from each other along a sliding direction of the valve core;

[0022] When the valve core moves to the first position, the first valve port is communicated with the third valve port through the first passage; when the valve core moves to the second position, the first valve port is communicated with the second valve port through the third passage.

[0023] The beneficial effects of the reversing valve provided by the present application are:

[0024] The present application provides a reversing valve, comprising a valve body and a valve core. The valve body has a valve cavity and a first valve port, a second valve port, a third valve port and a fourth valve port connected to the valve cavity; the valve core is slidably installed in the valve cavity, and the valve core has a first channel group and a second channel group arranged at intervals from each other along the sliding direction of the valve core, the first channel group includes a first channel and a second channel separated from each other, and the second channel group includes a third channel and a fourth channel separated from each other; when the valve core moves to the first position, the first valve port is connected to the fourth valve port through the first channel, and the second valve port is connected to the third valve port through the second channel; when the valve core moves to the second position, the first valve port is connected to the second valve port through the third channel, and the third valve port is connected to the fourth valve port through the fourth channel.

[0025] The valve core switches between the first position and the second position by a slidable movement. Since the first channel group and the second channel group are arranged at intervals along the sliding direction of the valve core, and each valve port has a corresponding exclusive connecting channel, when the valve core moves between the first position and the second position, there will be no mutual conduction between the channels, thereby avoiding the generation of intermediate flow and avoiding the gas blowby phenomenon between the valve ports. The movement of the valve core only needs to overcome the friction between the valve core and the valve body. Because the gas blowby phenomenon is avoided, the pressure difference or other driving force driving the valve core will not drop suddenly, ensuring the normal reversing of the valve core and avoiding the problem of the valve core being stuck. Compared with the traditional reversing valve, the reversing valve of the present application will not cause gas blowby, sticking, poor reversing and other phenomena. The reversing valve of the present application has the advantages of lower failure rate, wider application range, reliable and fast reversing, etc. when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be 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 paying creative labor.

[0027] Figure 1A schematic diagram of the main structure of the first reversing valve provided in this application;

[0028] Figure 2 A vertical cross-sectional structural schematic diagram of the first reversing valve provided in the present application;

[0029] Figure 3 A schematic diagram of the top view of the first reversing valve provided in the present application;

[0030] Figure 4 A schematic diagram of the transverse structure of the first reversing valve provided in the present application when the valve core is located in the first position;

[0031] Figure 5 A schematic diagram of the transverse structure of the first reversing valve provided in the present application when the valve core is located in the second position;

[0032] Figure 6 A schematic diagram of the three-dimensional structure of the first reversing valve provided in this application;

[0033] Figure 7 Schematic diagram of the split structure of the first reversing valve provided in this application Figure 1 ;

[0034] Figure 8 Schematic diagram of the split structure of the first reversing valve provided in this application Figure 2 ;

[0035] Fig. 9 A partial enlarged structural diagram of the first reversing valve provided in this application Figure 1 ;

[0036] Fig.10 A partial enlarged structural diagram of the first reversing valve provided in this application Figure 2 ;

[0037] Fig.11 A partial enlarged structural diagram of the first reversing valve provided in this application Figure 3 ;

[0038] Fig.12 A schematic diagram of the three-dimensional structure of the guide sleeve of the first reversing valve provided in the present application;

[0039] Fig.13 for Fig.11 Schematic diagram of the local enlarged structure in;

[0040] Fig.14 A schematic diagram of the top view of the second reversing valve provided in the present application;

[0041] Fig.15 A schematic diagram of the three-dimensional structure of the second reversing valve provided in this application;

[0042] Fig.16 A schematic diagram of the transverse structure of the second reversing valve provided in the present application when the valve core is located in the first position;

[0043] Fig.17 A schematic diagram of the transverse structure of the second reversing valve provided in the present application when the valve core is located in the second position;

[0044] Among them, the reference numerals in the figure are:

[0045] 1. Valve body; 10. Valve chamber;

[0046] 11. First valve port; 12. Second valve port;

[0047] 13. The third valve port; 14. The fourth valve port;

[0048] 2. valve core; 21. first channel;

[0049] 22. Second channel; 23. Third channel;

[0050] 24. Fourth channel; 25. Groove;

[0051] 26. First partition wall; 27. Second partition wall;

[0052] 3. Elastic component; 31. Elastic part;

[0053] 32. guide sleeve; 33. protrusion;

[0054] 4. Constant pressure channel. DETAILED DESCRIPTION

[0055] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0057] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing 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 therefore should not be understood as a limitation on the present application.

[0058] 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0059] like Figures 1 to 6 As shown, the present application provides a reversing valve, comprising a valve body 1 and a valve core 2. The valve body 1 has a valve cavity 10 and a first valve port 11, a second valve port 12, a third valve port 13 and a fourth valve port 14 connected to the valve cavity 10; the valve core 2 is slidably installed in the valve cavity 10, and the valve core 2 has a first channel group and a second channel group arranged at intervals from each other along the sliding direction of the valve core 2, the first channel group includes a first channel 21 and a second channel 22 separated from each other, and the second channel group includes a third channel 23 and a fourth channel 24 separated from each other;

[0060] When the valve core 2 moves to the first position, the first valve port 11 is connected to the fourth valve port 14 through the first channel 21, and the second valve port 12 is connected to the third valve port 13 through the second channel 22; when the valve core 2 moves to the second position, the first valve port 11 is connected to the second valve port 12 through the third channel 23, and the third valve port 13 is connected to the fourth valve port 14 through the fourth channel 24.

[0061] The valve core 2 switches between the first position and the second position by a slidable movement. Since the first channel group and the second channel group are arranged at intervals along the sliding direction of the valve core 2, and each valve port has a corresponding exclusive communication channel, when the valve core 2 moves between the first position and the second position, there will be no mutual conduction between the channels, thereby avoiding the generation of intermediate flow and avoiding the occurrence of gas blowby between the valve ports. The movement of the valve core 2 only needs to overcome the friction between the valve core 2 and the valve body 1. Because the occurrence of gas blowby is avoided, the pressure difference or other driving force driving the valve core 2 will not drop suddenly, ensuring the normal reversing of the valve core 2 and avoiding the problem of the valve core 2 being stuck. Compared with the traditional reversing valve, the reversing speed is faster.

[0062] Compared with the traditional reversing valve, the reversing valve of the present application will not cause gas blowby, jamming, poor reversing and the like. The reversing valve of the present application has the advantages of lower failure rate, wider application range, reliable and fast reversing and the like when in use.

[0063] In one embodiment, the valve core 2 has a stop valve core section arranged between the first channel group and the second channel group. When the valve core 2 moves to a third position between the first position and the second position, the first valve port 11, the second valve port 12, the third valve port 13 and the fourth valve port 14 are cut off from each other.

[0064] When the valve core 2 moves to the third position, the non-contact valve core section can block the communication between the first valve port 11, the second valve port 12, the third valve port 13 and the fourth valve port 14, preventing the generation of intermediate flow, thereby avoiding gas blowby between the valve ports.

[0065] like Figures 3 to 5 As shown, in one embodiment, the first valve port 11 , the second valve port 12 , the third valve port 13 and the fourth valve port 14 are sequentially arranged around the valve body 1 at intervals.

[0066] Specifically, the first valve port 11, the second valve port 12, the third valve port 13 and the fourth valve port 14 are sequentially arranged at 90° intervals around the valve body 1. It can be understood that in other embodiments, the interval angles can also be 30°, 45°, 60°, etc., and simple replacement of the interval angles should also fall within the protection scope of the present application.

[0067] like Figures 3 to 5 As shown, in one embodiment, the axis of the first valve port 11, the axis of the second valve port 12, the axis of the third valve port 13 and the axis of the fourth valve port 14 are all arranged in the same plane, that is, the first valve port 11, the second valve port 12, the third valve port 13 and the fourth valve port 14 are located at the same height and are arranged in four directions of front, back, left and right.

[0068] like Figure 4 and Figure 5 As shown, in one embodiment, the valve core 2 includes a first partition wall 26 arranged between the first channel 21 and the second channel 22, and a second partition wall 27 arranged between the third channel 23 and the fourth channel 24, the first partition wall is arranged at an angle to the axis of the first valve port 11 and the axis of the third valve port 13, and the second partition wall 27 is arranged at an angle to the axis of the first valve port 11 and the axis of the third valve port 13.

[0069] Specifically, the first partition wall is arranged at an angle of -45° to the axis of the first valve port 11 and the axis of the third valve port 13, and the second partition wall 27 is arranged at an angle of 45° to the axis of the first valve port 11 and the axis of the third valve port 13. It can be understood that in other embodiments, the angle can also be 30°, 60°, etc., and a simple replacement of the angle should also fall within the protection scope of this application.

[0070] like Figure 4 and Figure 5 As shown, in one embodiment, it also includes a constant pressure channel 4 provided on the valve body 1 , and the constant pressure channel 4 runs from the first end of the valve core 2 to the second end of the valve core 2 along the sliding direction of the valve core 2 .

[0071] When the valve core 2 slides from the first position to the second position, the volume of the cavity formed by the first end of the valve core 2 and the valve body 1 increases, and the volume of the cavity formed by the second end of the valve core 2 and the valve body 1 decreases. If there is no constant pressure channel 4 to connect the first end of the valve core 2 with the second end of the valve core 2, negative pressure will be formed at the first end of the valve core 2, and positive pressure will be formed at the second end of the valve core 2. This pressure difference will cause the valve core 2 to have a tendency to return from the second position to the first position, which may easily cause the valve core 2 to not slide into place or even get stuck. By connecting the first end of the valve core 2 with the second end of the valve core 2 through the constant pressure channel 4, the medium in the cavity at the first end of the valve core 2 can flow into the cavity at the second end of the valve core 2 through the constant pressure channel 4, thereby achieving pressure balance in the two cavities and avoiding the occurrence of pressure difference.

[0072] Specifically, the constant pressure channel 4 may be gaps distributed at four corners of the valve core 2 and the valve body 1 , or may be a pipe installed on the valve body 1 connecting a first end of the valve core 2 with a second end of the valve core 2 .

[0073] like Figure 7 and Figure 8 As shown, in one embodiment, a plurality of elastic components 3 are further included, each elastic component 3 is installed on the valve body 1 corresponding to the first valve port 11 , the second valve port 12 , the third valve port 13 and the fourth valve port 14 , and each elastic component 3 is in elastic contact with the valve core 2 .

[0074] Elastic contact specifically means that the elastic component 3 can exert a certain contact pressure on the valve core 2. The contact pressure can be changed according to the elasticity of the elastic component 3. Through the elastic contact between the elastic component 3 and the valve core 2, the elastic component 3 is tightly pressed on the valve core 2 to prevent the pressure medium entering the reversing valve from leaking from the gap between the elastic component 3 and the valve core 2. And by adjusting the contact pressure of the elastic component 3, the friction between the elastic component 3 and the valve core 2 can be adjusted to optimize the friction between the elastic component 3 and the valve core 2 (that is, the sealing effect between the elastic component 3 and the valve core 2 is the best and the friction is the smallest).

[0075] like Figure 4 and Figure 5 As shown, in one embodiment, a sealing ring is also installed on the elastic component 3, one end of the sealing ring is connected to the elastic component 3, and the other end of the sealing ring is against the valve core 2, thereby enhancing the sealing effect between the elastic component 3 and the valve core 2.

[0076] like Figure 5 and Figure 7 As shown, in one embodiment, the elastic component 3 includes an elastic member 31 and a guide sleeve 32, the guide sleeve 32 contacts the valve core 2, the first end of the elastic member 31 is connected to the guide sleeve 32, and the second end of the elastic member 31 is connected to the valve body 1. The guide sleeve 32 is pressed onto the valve core 2 by the elastic force of the elastic member 31, and the friction between the guide sleeve 32 and the valve core 2 is optimized by adjusting the elastic force of the elastic member 31.

[0077] The elastic member 31 may be a spring, an elastic sleeve, etc. The spring or the elastic sleeve is sleeved on the outer side of the guide sleeve 32 .

[0078] In other embodiments, the elastic component 3 may also be an integrated structure, which provides elastic pressure on the valve core 2 through its own elasticity, and adapts to the squeezing of the elastic component 3 when the valve core 2 slides through its own elastic deformation.

[0079] like Figures 9 to 11 As shown, in one embodiment, the contact between the guide sleeve 32 and the valve core 2 is a planar contact.

[0080] The guide sleeve 32 and the valve core 2 are in planar contact with each other, which can ensure that the contact pressure exerted by the guide sleeve 32 on the valve core 2 is more uniform, effectively reduce the friction resistance between the guide sleeve 32 and the valve core 2, and facilitate the relative sliding between the guide sleeve 32 and the valve core 2.

[0081] like Fig.12 and Fig.13 As shown, in one embodiment, a protrusion 33 is provided at one end of the guide sleeve 32, and a groove 25 corresponding to the protrusion 33 is provided on the valve core 2. When the valve core 2 is located at the first position or the second position, the protrusion 33 is located in the groove 25, and the protrusion 33 and the groove 25 are spaced apart from each other.

[0082] The groove 25 is used to avoid the protrusion 33. When the valve core 2 is located at the first position or the second position, the groove 25 can prevent the protrusion 33 from contacting the valve core 2, thereby preventing the protrusion 33 from interfering with the contact and cooperation between the guide sleeve 32 and the valve core 2, so that the guide sleeve 32 and the valve core 2 can fit tightly to prevent leakage.

[0083] Since the elastic member 31 exerts an elastic force on the guide sleeve 32, the guide sleeve 32 is in close contact with the valve core 2. When the valve core 2 slides, it is easy to cause wear to the guide sleeve 32 and the sealing ring installed on the guide sleeve 32. By setting the protrusion 33, when the protrusion 33 moves between the first position and the second position, the protrusion 33 disengages from the groove 25 and pushes the guide sleeve 32 away from the valve core 2, reducing the pressure on the sealing ring, thereby reducing the friction between the sealing ring and the valve core 2 and reducing the wear on the sealing ring. Optimally, the height to which the protrusion 33 pushes the guide sleeve 32 is just enough to make the sealing ring contact with the valve core 2, but the pressure between the sealing ring and the valve core 2 is 0, the sealing ring will not be worn by the valve core 2, and it is also easier for the valve core 2 to slide, which is beneficial to improve the reversing speed of the reversing valve.

[0084] In one embodiment, the reversing valve also includes a driving device (not shown) for driving the valve core 2 to slide, and the driving device is connected to the valve core 2. The reversing valve of the present application is different from the existing reversing valve. It does not require sufficient pressure difference between the two ends of the valve core 2 to push the valve core 2 to move. The reversing valve of the present application directly drives the valve core 2 through the driving device, so that the response speed of the reversing valve of the present application is faster and the reversing effect is quickly achieved. Among them, the driving device can specifically be a hydraulic / pneumatic cylinder, an electric push rod, an electromagnet, a linear motor, etc. Since the driving device can realize the driving function by adopting existing equipment, the structure and working principle of the driving device are not described in detail.

[0085] like Figures 14 to 17 As shown, the present application also provides a reversing valve, which is basically the same as the reversing valve in the above-mentioned embodiment, and the difference lies in that it includes a valve body 1 and a valve core 2, the valve body 1 has a valve cavity 10 and a first valve port 11, a second valve port 12 and a third valve port 13 connected to the valve cavity 10; the valve core 2 is slidably installed in the valve cavity 10, and the valve core 2 has a first channel 21 and a third channel 23 arranged at intervals from each other along the sliding direction of the valve core 2; when the valve core 2 moves to the first position, the first valve port 11 is connected to the third valve port 13 through the first channel 21; when the valve core 2 moves to the second position, the first valve port 11 is connected to the second valve port 12 through the third channel 23.

[0086] The reversing valve provided in this embodiment can realize the function of a two-position three-way reversing valve. Since the reversing valve is basically the same as the reversing valve in the above embodiment, it also has the advantages of the reversing valve in the above embodiment. Compared with the traditional reversing valve, the reversing valve in this embodiment will not cause gas blowby, stuck, poor reversing and the like. The reversing valve in this embodiment has the advantages of lower failure rate, wider application range, reliable and fast reversing and the like when in use.

[0087] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A reversing valve, characterized in that: include: A valve body (1) having a valve cavity (10) and a first valve port (11), a second valve port (12), a third valve port (13) and a fourth valve port (14) which are communicated with the valve cavity (10); A valve core (2) is slidably mounted in the valve cavity (10), the valve core (2) comprising a first channel group and a second channel group which are arranged in a spaced relationship from each other along a sliding direction of the valve core (2), the first channel group comprising a first channel (21) and a second channel (22) which are separated from each other, the second channel group comprising a third channel (23) and a fourth channel (24) which are separated from each other, When the valve core (2) moves to the first position, the first valve port (11) is communicated with the fourth valve port (14) through the first passage (21), and the second valve port (12) is communicated with the third valve port (13) through the second passage (22); when the valve core (2) moves to the second position, the first valve port (11) is communicated with the second valve port (12) through the third passage (23), and the third valve port (13) is communicated with the fourth valve port (14) through the fourth passage (24); It also comprises a plurality of elastic components (3), each of the elastic components (3) being mounted on the valve body (1) corresponding to each valve port, and each of the elastic components (3) being in elastic contact with the valve core (2); The elastic component (3) comprises an elastic member (31) and a guide sleeve (32), wherein the guide sleeve (32) contacts the valve core (2), a first end of the elastic member (31) is connected to the guide sleeve (32), and a second end of the elastic member (31) is connected to the valve body (1); A protrusion (33) is provided at one end of the guide sleeve (32), and a groove (25) corresponding to the protrusion (33) is provided on the valve core (2); when the valve core (2) is located at the first position or the second position, the protrusion (33) is located in the groove (25), and the protrusion (33) and the groove (25) are arranged at a distance from each other.

2. A reversing valve, characterized in that: include: A valve body (1) having a valve cavity (10) and a first valve port (11), a second valve port (12) and a third valve port (13) communicated with the valve cavity (10); A valve core (2) is slidably mounted in the valve cavity (10), wherein the valve core (2) has a first channel (21) and a third channel (23) which are arranged at intervals from each other along a sliding direction of the valve core (2); When the valve core (2) moves to a first position, the first valve port (11) is communicated with the third valve port (13) through the first passage (21); when the valve core (2) moves to a second position, the first valve port (11) is communicated with the second valve port (12) through the third passage (23); It also comprises a plurality of elastic components (3), each of the elastic components (3) being mounted on the valve body (1) corresponding to each valve port, and each of the elastic components (3) being in elastic contact with the valve core (2); The elastic component (3) comprises an elastic member (31) and a guide sleeve (32), wherein the guide sleeve (32) contacts the valve core (2), a first end of the elastic member (31) is connected to the guide sleeve (32), and a second end of the elastic member (31) is connected to the valve body (1); A protrusion (33) is provided at one end of the guide sleeve (32), and a groove (25) corresponding to the protrusion (33) is provided on the valve core (2); when the valve core (2) is located at the first position or the second position, the protrusion (33) is located in the groove (25), and the protrusion (33) and the groove (25) are arranged at a distance from each other.

3. The reversing valve according to claim 1 or 2, characterized in that: The contact between the guide sleeve (32) and the valve core (2) is planar contact.

4. The reversing valve according to claim 1, characterized in that: The valve core (2) has a stop valve core section arranged between the first channel group and the second channel group. When the valve core (2) moves to a third position between the first position and the second position, the first valve port (11), the second valve port (12), the third valve port (13) and the fourth valve port (14) are cut off from each other.

5. The reversing valve according to claim 4, characterized in that: The first valve port (11), the second valve port (12), the third valve port (13) and the fourth valve port (14) are sequentially arranged at intervals around the valve body (1).

6. The reversing valve according to claim 4, characterized in that: The valve core (2) comprises a first partition wall (26) arranged between the first channel (21) and the second channel (22), and a second partition wall (27) arranged between the third channel (23) and the fourth channel (24); the first partition wall (26) is arranged at an angle with the axis of the first valve port (11); the first partition wall (26) is arranged at an angle with the axis of the third valve port (13); the second partition wall (27) is arranged at an angle with the axis of the first valve port (11); and the second partition wall (27) is arranged at an angle with the axis of the third valve port (13).

7. The reversing valve according to claim 4, characterized in that: It also comprises a constant pressure channel (4) provided on the valve body (1), wherein the constant pressure channel (4) passes through from the first end of the valve core (2) to the second end of the valve core (2) along the sliding direction of the valve core (2).

Images