Reversing valve and refrigeration system

Abstract

The present invention relates to the field of refrigeration technology, and in particular to a reversing valve and a refrigeration system. A reversing valve comprises a valve body, a valve seat and a slider, wherein the valve seat and the slider are arranged in the valve body, a first connecting port and a plurality of connecting ports are provided on the valve body, the connecting ports pass through the valve seat, the slider is arranged on the valve seat and can slide in the valve body, the first connecting port is provided with a first connecting pipe, and the medium can enter the valve body from the first connecting pipe; the reversing valve also comprises a drainage structure, the drainage structure is arranged in the valve body and is located at the first connecting port, the drainage structure comprises a drainage part and a fixed part connected to each other, the drainage part is connected to the first connecting pipe through the fixed part, a part of the drainage part extends into the first connecting pipe, and a part of the drainage part extends into the valve body, and the medium enters the valve body through the drainage of the drainage part. The advantage of the present invention is that it can reduce the pressure on the slider, thereby reducing the friction between the slider and the valve seat.

Description

Technical Field

[0001] The present invention relates to the field of refrigeration technology, in particular to a reversing valve and a refrigeration system. Background Art

[0002] In a refrigeration system, a reversing valve is usually provided to realize the switching of different functions of the refrigeration system. The reversing valve includes a sliding valve assembly and a valve body. A valve seat is provided in the valve body. The sliding valve assembly slides in the valve body to realize the connection between different connection ports.

[0003] In the existing reversing valve, during the reversing process, the slider will slide horizontally on the valve seat. Since the first connecting port is connected to the high-pressure exhaust port of the compressor, the high-pressure medium will form a positive impact on the slider, especially the part of the slider located directly below the first connecting port, which is subjected to the greatest impact force, increasing the friction between the slider and the valve seat during the sliding process, resulting in a large noise. Summary of the Invention

[0004] Based on this, the present invention provides a reversing valve to solve the above technical problems. The technical solution is as follows:

[0005] A reversing valve comprises a valve body, a valve seat and a slider, the valve seat and the slider being arranged in the valve body, the valve body being provided with a first connecting port and a plurality of communicating ports, the communicating ports penetrating the valve seat, the slider being arranged on the valve seat and being able to slide in the valve body, the first connecting port being provided with a first connecting pipe, and the medium being able to enter the valve body from the first connecting pipe; the reversing valve further comprises a drainage structure, the drainage structure being arranged in the valve body and located at the first connecting port, the drainage structure comprising a drainage portion and a fixing portion connected to each other, the drainage portion being connected to the first connecting pipe through the fixing portion, a portion of the drainage portion extending into the first connecting pipe, and a portion of the drainage portion extending into the valve body, the medium entering the valve body through the drainage of the drainage portion.

[0006] With such a configuration, the blocking and drainage of the drainage part can change the flow direction of the medium, not only can part of the medium be drained to the outside of the slider without directly impacting the slider, but also the flow speed of the medium can be reduced, and the pressure on the part of the slider located directly below the first connecting port can be reduced, thereby reducing the friction between the slider and the valve seat during the sliding process and avoiding noise; and the flow channel of the drainage part can be extended, the drainage effect can be enhanced, and space can be saved.

[0007] In one embodiment, the drainage portion includes at least a first baffle and a second baffle connected to each other, wherein one end of the first baffle away from the second baffle extends toward a direction away from the central axis of the first connecting tube and away from the slider, and one end of the second baffle away from the first baffle extends toward a direction close to the slider and away from the central axis of the first connecting tube.

[0008] Such an arrangement enables the drainage portion to be arranged as a whole at an inclination, which can change the flow direction of the medium to a greater extent, and guide more medium to the outside of the slider without directly impacting the slider.

[0009] In one embodiment, an end of the first baffle away from the second baffle is spaced apart from the inner wall of the first connecting port, and a surface of the second baffle away from the slider is spaced apart from the inner wall of the first connecting pipe.

[0010] With such a configuration, part of the medium flows out from the first baffle away from the gap between the second baffle and the inner wall of the first connecting port, and the drainage portion forms multiple flow channels, which can disperse the flow of the medium, reduce the impact on the slider located directly below the first connecting port, and directly guide more medium to the outside of the slider without directly impacting the slider.

[0011] In one embodiment, the first baffle and the second baffle are both arc-shaped, and the outer convex surface of the first baffle is disposed away from the slider, and the inner concave surface of the second baffle is disposed away from the slider.

[0012] Such an arrangement can ensure a natural transition between the first baffle and the second baffle, avoid the formation of a recessed portion where the medium can accumulate at the connection between the first baffle and the second baffle, and allow the medium to enter the valve body smoothly.

[0013] In one embodiment, the curvature of the first baffle is 90°, the curvature of the second baffle is 90°, the first baffle has a second end face, the second baffle has a third end face that is in contact with the second end face, the line connecting the center of the second end face and the center of the first baffle is parallel to the sliding direction of the slider, and the line connecting the center of the third end face and the center of the second baffle is parallel to the sliding direction of the slider.

[0014] Such an arrangement can not only prevent the first baffle and the second baffle from generating depressions that are detrimental to the flow of the medium, but also enable the second baffle to guide the medium farther away from the slider.

[0015] In one embodiment, the first baffle and the second baffle are both arc-shaped, and the inner concave surface of the first baffle is disposed away from the slider, and the outer convex surface of the second baffle is disposed away from the slider.

[0016] Such an arrangement can ensure a natural transition between the first baffle and the second baffle, avoid the formation of a recessed portion where the medium can accumulate at the connection between the first baffle and the second baffle, and allow the medium to enter the valve body smoothly.

[0017] In one embodiment, the curvature of the first baffle is 90°, the curvature of the second baffle is 90°, the first baffle has a second end face, the second baffle has a third end face that is in contact with the second end face, the line connecting the center of the second end face and the center of the first baffle is perpendicular to the sliding direction of the slider, and the line connecting the center of the third end face and the center of the second baffle is perpendicular to the sliding direction of the slider.

[0018] Such an arrangement can not only prevent the first baffle and the second baffle from generating depressions that are detrimental to the flow of the medium, but also enable the second baffle to guide the medium farther away from the slider.

[0019] In one embodiment, the drainage portion is spaced apart from an end of the slider that is close to the slider and a surface of the slider that is close to the first connection port.

[0020] Such an arrangement enables the slider to slide smoothly.

[0021] In one embodiment, the fixing portion is annular, the inner side of the annular fixing portion is connected to the drainage portion, and the outer side of the fixing portion abuts against the inner wall of the first connecting port.

[0022] Such an arrangement can enhance the stability of the installation of the drainage structure.

[0023] The present invention also provides the following technical solutions:

[0024] A refrigeration system comprises the above-mentioned reversing valve.

[0025] Compared with the prior art, the reversing valve provided by the present invention has a drainage structure, a part of which extends into the first connecting pipe and a part of which extends into the valve body. The drainage part can not only block the medium, but also change the flow direction of the medium, and directly drain part of the medium to the outside of the slider without impacting the slider, thereby reducing the flow speed of the medium and the pressure on the slider directly below the first connecting port, thereby reducing the friction between the slider and the valve seat and avoiding noise when the slider slides. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A cross-sectional view of the reversing valve according to the first embodiment of the present invention;

[0027] Figure 2 A cross-sectional view of a reversing valve according to a second embodiment of the present invention;

[0028] Figure 3 It is a three-dimensional diagram of the reversing valve;

[0029] Figure 4 It is the right side view of the reversing valve;

[0030] Figure 5 It is a top view of the reversing valve;

[0031] Figure 6 This is a front view of the drainage structure of Example 1;

[0032] Figure 7 is a three-dimensional diagram of the drainage structure of Example 1;

[0033] Figure 8 It is a left side view of the drainage structure of Example 1;

[0034] Figure 9 A top view of the drainage structure of Example 1;

[0035] Figure 10 for Figure 2 A partial enlarged view of point A in the middle.

[0036] The symbols in the figure mean the following:

[0037] 100, reversing valve; 10, valve body; 101, connecting port; 102, first inner cavity; 103, end cap; 1031, first end cap cavity; 1032, second end cap cavity; 11, valve seat; 12, first connecting port; 13, second connecting port; 14, third connecting port; 15, fourth connecting port; 16, first connecting pipe; 17, second connecting pipe; 18, third connecting pipe; 19, fourth connecting pipe; 20, sliding valve assembly; 21, slider; 211, Groove; 212, second inner cavity; 22, connecting rod; 23, first stopper; 24, second stopper; 30, pilot valve; 31, first capillary; 32, second capillary; 33, third capillary; 34, fourth capillary; 40, drainage structure; 41, fixing portion; 42, drainage portion; 421, first baffle; 4211, first end face; 4212, second end face; 422, second baffle; 4221, third end face; 4222, fourth end face. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0039] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component. When a component is considered to be "fixed to" another component, it may be directly fixed to the other component or there may be a central component.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] See Figures 1 to 10 The present invention provides a reversing valve 100, which is used in a refrigeration system to switch between different pipelines. In this embodiment, the reversing valve 100 is a four-way reversing valve 100. In other embodiments, the reversing valve 100 can also be a five-way reversing valve, a six-way reversing valve, or other types of reversing valves.

[0042] See Figures 1 to 5 The reversing valve 100 includes a valve body 10 and a sliding valve assembly 20. A valve seat 11 is provided in the valve body 10. The sliding valve assembly 20 is partially provided on the valve seat 11. The valve body 10 has a first inner cavity 102. The sliding valve assembly 20 is provided in the first inner cavity 102. The sliding valve assembly 20 can slide in the first inner cavity 102.

[0043] Specifically, the valve body 10 is provided with a first connection port 12, which is in communication with the first inner cavity 102. It should be noted that in this embodiment, the first connection port 12 is a high-pressure port, i.e., port "D", which is connected to the exhaust port of a compressor (not shown) in the refrigeration system. In other embodiments, depending on the different uses of the reversing valve 100, the first connection port 12 can also be connected to other devices.

[0044] The valve body 10 is provided with a plurality of communication ports 101, each of which extends through the valve seat 11. The spool valve assembly 20 slides within the valve body 10 to selectively connect different communication ports 101. In this embodiment, the communication ports 101 include a second connection port 13, a third connection port 14, and a fourth connection port 15. The second connection port 13, the third connection port 14, and the fourth connection port 15 are located on the side of the valve body 10 opposite the first connection port 12. The first connection port 12 is connected to a first connecting pipe 16, the second connection port 13 is connected to a second connecting pipe 17, the third connection port 14 is connected to a third connecting pipe 18, and the fourth connection port 15 is connected to a fourth connecting pipe 19.

[0045] The second connecting pipe 17 is connected to the evaporator (not shown) in the refrigeration system, that is, the second connecting port 13 is the "E" port. The third connecting pipe 18 is connected to the suction port of the compressor, and the third connecting port 14 is the "S" port. The fourth connecting pipe 19 is connected to the condenser (not shown), that is, the fourth connecting port 15 is the "C" port. In other embodiments, the valve body 10 may further have a fifth connecting port, to which a fifth connecting pipe is connected. Depending on the different uses of the reversing valve 100, the fifth connecting pipe is connected to another heat exchanger, the first connecting pipe 16, or other locations. Other connecting ports may also be provided on the valve body 10.

[0046] The sliding valve assembly 20 includes a slider 21 and a connecting rod 22. The slider 21 is fixed on the connecting rod 22. A groove 211 is provided on the side of the slider 21 away from the first connecting port 12. The groove 211 and the valve seat 11 form a second inner cavity 212. The second inner cavity 212 can be connected to the second connecting port 13 and the third connecting port 14, or the second inner cavity 212 can be connected to the third connecting port 14 and the fourth connecting port 15. The first inner cavity 102 and the second inner cavity 212 are always separated and not connected.

[0047] The slide valve assembly 20 further includes a first stopper 23 and a second stopper 24, which are respectively fixed to both ends of the connecting rod 22 and are used to axially limit the slider 21. In the present invention, the medium refers to the refrigerant.

[0048] In this embodiment, when the refrigeration system is in cooling mode, the first stop block 23 abuts against the side wall of the inner cavity, the second connection port 13 and the second inner cavity 212 are connected to the third connection port 14, and the first connection port 12 is connected to the fourth connection port 15 through the first inner cavity 102; when the refrigeration system needs to switch to heating mode, the sliding valve assembly 20 slides, the second stop block 24 abuts against the side wall of the first inner cavity 102, the third connection port 14 and the second inner cavity 212 are connected to the fourth connection port 15, and the first connection port 12 is connected to the second connection port 13 through the first inner cavity 102.

[0049] See Figures 3 to 5The reversing valve 100 also includes a pilot valve 30, which is mounted on the valve body 10 and is used to drive the sliding valve assembly 20 to slide. End caps 103 are provided at both ends of the valve body 10. One end cap 103 and the first stopper 23 form a first end cap cavity 1031, and the other end cap 103 and the second stopper 24 form a second end cap cavity 1032. The pilot valve 30 is provided with a first capillary tube 31, a second capillary tube 32, a third capillary tube 33, and a fourth capillary tube 34. The first capillary tube 31 communicates with the first connecting tube 16, the second capillary tube 32 communicates with the first end cap cavity 1031, the third capillary tube 33 communicates with the third connecting tube 18, and the fourth capillary tube 34 communicates with the second end cap cavity 1032. When the refrigeration system is in heating mode and needs to be switched, the pilot valve 30 is reversed, so that the first capillary tube 31 is connected to the fourth capillary tube 34, and the high-pressure medium enters the fourth capillary tube 34 from the first capillary tube 31, and then enters the cavity of the second end cover 103, pushing the second stopper 24, thereby causing the sliding valve assembly 20 to slide. At this time, the fourth connecting tube 19 is connected to the first connecting tube 16, and the third connecting tube 18 is connected to the second connecting tube 17, thereby achieving reversal.

[0050] In the existing reversing valve, when the reversing valve is reversed, since the first connecting port is connected to the compressor exhaust port and the pressure is relatively high, the slider is subjected to the pressure of the high-pressure airflow during its sliding process. In particular, the part of the slider located directly below the first connecting port is subjected to the greatest pressure, which increases the friction between the slider and the valve seat, thereby generating noise.

[0051] See Figures 6 to 10 The present invention provides a drainage structure 40 in the valve body 10 and at the first connecting port 12. The drainage structure 40 includes a mutually connected fixing portion 41 and a drainage portion 42. The fixing portion 41 is connected to the inner wall of the first connecting port 12. A portion of the drainage portion 42 extends into the first connecting pipe 16, and the other portion extends into the valve body 10. Due to the obstruction of the drainage portion 42, the flow velocity of the medium can be reduced, and the impact force of the medium on the slider 21 can be reduced. The drainage portion 42 guides the high-pressure medium flowing in from the first connecting pipe 16, changes the flow direction of the medium, and reduces the positive impact force of the medium on the slider 21. At the same time, the drainage portion 42 can directly guide part of the medium into the valve body 10, and part of the medium does not directly impact the slider 21, which can further reduce the pressure on the slider 21, thereby reducing the friction between the slider 21 and the valve seat 11. At the same time, extending part of the drainage portion 42 into the first connecting pipe 16 can extend the drainage flow path of the drainage portion 42 and save space.

[0052] The fixing portion 41 is annular in shape, and the drainage portion 42 is fixed to the inner sidewall of the annular fixing portion 41. The outer sidewall of the annular fixing portion 41 abuts the inner wall of the first connecting port 12. The side of the fixing portion 41 away from the slider 21 abuts the end surface of the first connecting tube 16 to limit the position of the drainage structure 40. The annular fixing portion 41 is adapted to the shape of the first connecting port 12, which can enhance the stability of the fixation. The annular fixing portion 41 prevents the drainage portion 42 from tilting due to the impact of the high-pressure medium.

[0053] An end of the drainage portion 42 close to the slider 21 is spaced apart from a surface of the slider 21 close to the first connecting pipe 16 , so that the slider 21 can slide smoothly without being blocked.

[0054] The drainage portion 42 includes at least a first baffle 421 and a second baffle 422. The first baffle 421 and the second baffle 422 are connected to each other. The end of the first baffle 421 away from the second baffle 422 extends in a direction away from the central axis of the first connecting tube 16 and extends into the first connecting tube 16. The end of the second baffle 422 away from the first baffle 421 extends in a direction away from the first baffle 421 and in a direction away from the central axis of the first connecting tube 16 and extends into the first inner cavity 102. In other words, the axis of the drainage portion 42 is inclined relative to the central axis of the first connecting tube 16. With this arrangement, the medium is drained from the first baffle 421 to the second baffle 422 and then flows into the first inner cavity 102. At the same time, the first baffle 421 extends into the first connecting tube 16, which can save space. Here, the axis of the drainage portion 42 refers to Figure 10 The b in.

[0055] Furthermore, the first baffle 421 is spaced apart from the inner wall of the first connecting tube 16 at one end away from the second baffle 422, and the second baffle 422 is spaced apart from the inner wall of the first connecting tube 16 at the surface away from the slider 21. This arrangement allows the medium to smoothly enter the first inner cavity 102, and the medium can flow into the first inner cavity 102 from the gap between the first baffle 421 away from the second baffle 422 and the inner wall of the first connecting tube 16, that is, the first baffle 421 can divert the medium into multiple streams to disperse the medium, thereby reducing the pressure, so that more medium is diverted to the circumference of the slider 21 without directly impacting the slider 21.

[0056] The first baffle 421 and the second baffle 422 are both arc-shaped, which can enable the medium to flow smoothly along the first baffle 421 and the second baffle 422 .

[0057] The arc-shaped first baffle 421 and the second baffle 422 are formed by bending, and the process is simple.

[0058] Example 1

[0059] See Figure 1 and Figure 6 The concave surface of the first baffle 421 is positioned away from the slider 21, and the convex surface of the second baffle 422 is positioned away from the slider 21. That is, the first baffle 421 and the second baffle 422 form an "S" shape or a mirrored "S" shape. The convex surface of the first baffle 421 and the concave surface of the second baffle 422 can form a natural transition, allowing the medium to flow smoothly. In this embodiment, the drainage portion 42 includes the first baffle 421 and the second baffle 422. In other embodiments, the drainage portion 42 may further include a third baffle, which may be an inclined surface or an arcuate surface, or the drainage portion 42 may further include a third baffle and a fourth baffle, both of which are arcuate. The concave surface of the third baffle is positioned away from the slider 21, and the convex surface of the fourth baffle is positioned away from the slider 21, or the convex surface of the third baffle is positioned away from the slider 21, and the concave surface of the fourth baffle is positioned away from the slider 21.

[0060] The first baffle 421 has a 90° arc, and the second baffle 422 also has a 90° arc. The first baffle 421 has a first end surface 4211 and a second end surface 4212 that are disposed opposite each other, while the second baffle 422 has a third end surface 4221 and a fourth end surface 4222 that are disposed opposite each other. The second end surface 4212 is aligned with the third end surface 4221. The line connecting the center of the second end surface 4212 and the center of the first baffle 421 is perpendicular to the sliding direction of the slider 21, while the line connecting the center of the third end surface 4221 and the center of the second baffle 422 is perpendicular to the sliding direction of the slider 21. This arrangement not only prevents the formation of depressions on the first and second baffles 421 and 422 that would hinder the flow of the medium, but also enables the second baffle 422 to direct the medium further away from the slider 21.

[0061] Example 2

[0062] See Figure 2 and Figure 10 The structure of the reversing valve 100 of this embodiment is basically the same as that of the first embodiment, and the similarities are not repeated here. The differences are:

[0063] The convex surface of the first baffle 421 is positioned away from the slider 21, and the concave surface of the second baffle 422 is positioned away from the slider 21. That is, the first baffle 421 and the second baffle 422 form an "S" shape or a mirrored "S" shape. The concave surface of the first baffle 421 and the convex surface of the second baffle 422 can form a natural transition, allowing the medium to flow smoothly. In this embodiment, the drainage portion 42 includes the first baffle 421 and the second baffle 422. In other embodiments, the drainage portion 42 may further include a third baffle, which may be an inclined surface or an arcuate surface, or the drainage portion 42 may further include a third baffle and a fourth baffle, both of which are arcuate, with the concave surface of the third baffle positioned away from the slider 21 and the convex surface of the fourth baffle positioned away from the slider 21, or the convex surface of the third baffle positioned away from the slider 21 and the concave surface of the fourth baffle positioned away from the slider 21.

[0064] The first baffle 421 has a 90° arc, and the second baffle 422 also has a 90° arc. The line connecting the center of the second end surface 4212 and the center of the first baffle 421 is parallel to the sliding direction of the slider 21, and the line connecting the center of the third end surface 4221 and the center of the second baffle 422 is parallel to the sliding direction of the slider 21. This arrangement not only prevents the formation of depressions on the first and second baffles 421, 422 that would hinder the flow of the medium, but also enables the second baffle 422 to direct the medium further away from the slider 21.

[0065] The present invention also provides a refrigeration system, which includes a compressor and the above-mentioned reversing valve 100. The first connecting pipe 16 and the third connecting pipe 18 of the reversing valve 100 are respectively connected to the exhaust port and the intake port of the compressor. The refrigeration system includes a cooling mode and a heating mode. The reversing valve 100 is used to realize the switching between the cooling mode and the heating mode.

[0066] During operation, when the refrigeration system needs to switch modes, the sliding valve assembly 20 slides, and the high-pressure medium from the compressor exhaust port enters from the first connecting pipe 16. After being blocked and drained by the drainage portion 42, it can not only reduce the flow rate of the medium and reduce the impact force on the slider 21, but also change the flow direction of the medium, drain part of the medium, and reduce the medium falling on the slider 21, thereby reducing the pressure on the slider 21, reducing the friction between the slider 21 and the valve seat 11 when sliding, and eliminating noise.

[0067] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0068] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A reversing valve, comprising a valve body (10), a valve seat (11) and a slider (21), wherein the valve seat (11) and the slider (21) are arranged in the valve body (10), the valve body (10) is provided with a first connecting port (12) and a plurality of communication ports (101), the communication ports (101) pass through the valve seat (11), the slider (21) is arranged on the valve seat (11) and can slide in the valve body (10), the first connecting port (12) is provided with a first connecting pipe (16), and a medium can enter the valve body (10) through the first connecting pipe (16); It is characterized in that The reversing valve further comprises a drainage structure (40), the drainage structure (40) being arranged in the valve body (10) and located at the first connecting port (12), the drainage structure (40) comprising a drainage portion (42) and a fixing portion (41) connected to each other, the drainage portion (42) being connected to the first connecting port (12) via the fixing portion (41), a portion of the drainage portion (42) extending into the first connecting pipe (16), and a portion of the drainage portion (42) extending into the valve body (10), and the medium entering the valve body (10) through the drainage of the drainage portion (42); The drainage portion (42) includes a first baffle (421) and a second baffle (422). Along the axial direction of the first connecting tube (16), the first baffle (421) and the second baffle (422) are located on both sides of the fixed portion (41). An end of the first baffle (421) away from the second baffle (422) extends in a direction away from the central axis of the first connecting tube (16) and away from the slider (21). The first baffle (421) is located in the first connecting tube (16). An end of the second baffle (422) away from the first baffle (421) extends in a direction close to the slider (21) and away from the central axis of the first connecting tube (16). The second baffle (421) is located in the valve body (10).

2. The reversing valve according to claim 1, characterized in that: An end of the first baffle (421) away from the second baffle (422) is spaced apart from the inner wall of the first connecting pipe (16), and a surface of the second baffle (422) away from the slider (21) is spaced apart from the inner wall of the first connecting port (12).

3. The reversing valve according to claim 1, characterized in that: The first baffle (421) and the second baffle (422) are both arc-shaped, and the outer convex surface of the first baffle (421) is arranged away from the slider (21), and the inner concave surface of the second baffle (422) is arranged away from the slider (21).

4. The reversing valve according to claim 3, characterized in that: The first baffle (421) has an arc of 90°, the second baffle (422) has an arc of 90°, the first baffle (421) has a second end face (4212), the second baffle (422) has a third end face (4221) in contact with the second end face (4212), a line connecting the center of the second end face (4212) and the center of the first baffle (421) is parallel to the sliding direction of the slider (21), and a line connecting the center of the third end face (4221) and the center of the second baffle (422) is parallel to the sliding direction of the slider (21).

5. The reversing valve according to claim 1, characterized in that: The first baffle (421) and the second baffle (422) are both arc-shaped, and the inner concave surface of the first baffle (421) is arranged away from the slider (21), and the outer convex surface of the second baffle (422) is arranged away from the slider (21).

6. The reversing valve according to claim 5, characterized in that: The first baffle (421) has an arc of 90°, the second baffle (422) has an arc of 90°, the first baffle (421) has a second end face (4212), the second baffle (422) has a third end face (4221) in contact with the second end face (4212), a line connecting the center of the second end face (4212) and the center of the first baffle (421) is perpendicular to the sliding direction of the slider (21), and a line connecting the center of the third end face (4221) and the center of the second baffle (422) is perpendicular to the sliding direction of the slider (21).

7. The reversing valve according to claim 1, characterized in that: The drainage portion (42) is spaced apart between an end of the slider (21) and a surface of the slider (21) that is close to the first connection port (12).

8. The reversing valve according to claim 1, characterized in that: The fixing portion (41) is annular, the inner side of the annular fixing portion (41) is connected to the drainage portion (42), and the outer side of the fixing portion (41) abuts against the inner wall of the first connecting port (12).

9. A refrigeration system, characterized in that: It comprises the reversing valve according to any one of claims 1 to 8.

Images