Switching valve
By using a seal in the switching valve to set the valve between the valve core and the valve body, the fluid leakage problem when the flow port and the interface are connected is solved, and better sealing and stable fluid flow are achieved.
Patent Information
- Application Number
- CN202311212428.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-19
- Publication Date
- 2025-03-21
AI Technical Summary
The existing switching valves have fluid leakage problems when the flow ports and interfaces are connected, which affects the flow rate of the refrigerant.
A switching valve is designed, and a seal is used to arrange between the valve core and the valve body. The through holes are used to connect the flow port and the interface. The gap is reduced by extruding the seal and preventing fluid leakage.
It effectively improves the sealing between the valve core and the valve body, prevents fluid leakage, and ensures stable fluid flow.
Smart Images
Figure CN119664948A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of valve technology, and in particular to a switching valve. Background Art
[0002] As an indispensable component in a refrigeration system, the switching valve is mainly connected to the compressor. Depending on the cooling and heating modes, the compressor outlet is connected to the outdoor unit or the indoor unit. After the refrigerant circulates, it can flow back to the compressor through the switching valve.
[0003] In the related art, the switching valve includes a valve core and a valve body. The valve core has multiple flow ports, and the valve body is provided with an interface. By rotating the valve core, the flow ports can be connected to the corresponding interfaces, thereby realizing the selection of the refrigerant at the compressor outlet to be input into the indoor unit or the outdoor unit. However, during the process of connecting the flow ports and the interfaces, there is a situation of fluid leakage, which affects the flow rate of the refrigerant. Summary of the invention
[0004] Based on this, it is necessary to provide a switching valve to enhance the sealing performance when the valve core is connected to the valve body to prevent fluid leakage.
[0005] A switching valve, the switching valve comprises a valve body, a valve core and a sealing member; the valve core is provided with a flow port; the valve body is provided with a valve cavity, the valve core is installed in the valve cavity, the valve body is also provided with an interface connected to the valve cavity, and the interface is used to communicate with the flow port; the sealing member is provided between the valve core and the valve body, the sealing member is provided with a through hole, and the through hole is used to connect the flow port and the interface.
[0006] It can be understood that the valve body is provided with a valve cavity to provide a space for accommodating the valve core, and the valve core is connected to the interface through the flow port to realize the transmission of the fluid. When the flow port and the interface are connected, the setting of the sealing member squeezed between the valve core and the valve body can reduce the gap between the valve core and the valve body, prevent the fluid from leaking from the gap, and allow the fluid to fully flow from the flow port into the interface, thereby improving the sealing between the valve core and the valve body.
[0007] In one of the embodiments, a pressure gap is formed between the sealing member and the valve core on one side thereof facing the valve core, and the pressure gap is communicated with the valve cavity and is arranged away from the flow port and the through hole.
[0008] It is understandable that fluid can flow into the pressure gap. When the flow port, the through hole and the interface are connected, the fluid in the pressure gap generates an extrusion force on the seal toward the valve body, so that the seal and the valve body fit more closely, thereby promoting the sealing between the seal and the valve body.
[0009] In one embodiment, the valve body is provided with an input port, the valve core is provided with a notch, the notch is spaced apart from the flow port, the notch is used to communicate with a corresponding one of the interfaces, and the input port, the valve cavity, the notch and the corresponding interface form a fluid channel.
[0010] It can be understood that while achieving fluid delivery, the pressure of the fluid is used to promote the seal between the sealing element and the valve body.
[0011] In one of the embodiments, a pressure groove is provided on the side of the seal facing the valve core, the pressure groove penetrates the peripheral wall of the seal and communicates with the valve cavity, and the groove wall of the pressure groove and the valve core are arranged to form the pressure gap.
[0012] It can be understood that the arrangement of the pressure groove has a simple structure and is easy to form a pressure gap with the valve core.
[0013] In one embodiment, the number of the pressure grooves is multiple, and the multiple pressure grooves are arranged at intervals, so as to increase the pressure gap and allow more fluid to penetrate, thereby improving the sealing performance.
[0014] In one embodiment, the sealing member is provided with a mounting boss, the mounting boss extends from the edge of the through hole toward the valve core, the mounting boss extends into the flow port, and the outer wall of the mounting boss is interference fit with the inner wall of the valve core.
[0015] It can be understood that the mounting boss is provided to facilitate sealing between the sealing member and the valve core.
[0016] In one of the embodiments, the valve core is provided with the flow ports on both sides along the second direction, and the flow ports on both sides are arranged alternately along the third direction, and the sealing member is installed at the flow ports on each side; the valve core can rotate around its own axis to switch the connection between the flow ports on both sides and the corresponding interfaces.
[0017] It can be understood that such an arrangement enables the flow opening on one side of the valve core that is connected to the valve body to be sealed after the valve core is switched.
[0018] In one of the embodiments, two flow ports are provided on each side of the valve core along the second direction, and the two flow ports are arranged at intervals along the third direction and connected to form a flow channel; and each flow port is correspondingly connected to one through hole and one interface; or, one flow port is provided on each side of the valve core along the second direction, and the flow ports on each side are correspondingly connected to one through hole and any two adjacent interfaces.
[0019] It is understandable that this configuration is used to enable the sealing member to be compatible with different flow openings.
[0020] In one of the embodiments, two flow ports are arranged on each side of the valve core along the second direction, and one flow port corresponds to a central axis; the central axes of the two flow ports on one side are the first central axis and the second central axis, and the central axes of the two flow ports on the other side are the third central axis and the fourth central axis; along the second direction, the first central axis and the third central axis coincide or tend to coincide, and along the third direction, the second central axis and the fourth central axis are separated by the first central axis and / or the third central axis, and the distance between the second central axis and the first central axis is equal to the distance between the third central axis and the fourth central axis.
[0021] It is understandable that such an arrangement facilitates the positioning of the flow opening during processing.
[0022] In one of the embodiments, the valve core is provided with a flow port on each side along the second direction, and one flow port corresponds to two center axes arranged at intervals; the center axes of the flow port on one side are the first center axis and the second center axis, and the center axes of the flow port on the other side are the third center axis and the fourth center axis; along the second direction, the first center axis and the third center axis coincide or tend to coincide, and along the third direction, the second center axis and the fourth center axis are spaced apart by the first center axis and / or the third center axis, and the distance between the second center axis and the first center axis is equal to the distance between the third center axis and the fourth center axis.
[0023] It is understandable that such an arrangement facilitates the positioning of the flow opening during processing. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] 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.
[0025] Figure 1 A partial cross-sectional view of the switching valve provided in the present application;
[0026] Figure 2 A schematic diagram of the structure of a valve core and a sealing member in an embodiment of a switching valve provided in the present application;
[0027] Figure 3A schematic diagram of the structure of a sealing member in an embodiment of a switching valve provided in the present application;
[0028] Figure 4 for Figure 3 A partial enlarged view of the middle A;
[0029] Figure 5 A side view of a sealing member in an embodiment of a switching valve provided in the present application;
[0030] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;
[0031] Figure 7 A cross-sectional view of a valve core in an embodiment of a switching valve provided in the present application;
[0032] Figure 8 A schematic diagram of the structure of a valve core in another embodiment of a switching valve provided in the present application;
[0033] Fig. 9 A schematic structural diagram of a sealing member in another embodiment of a switching valve provided in the present application;
[0034] Fig.10 A cross-sectional view of a valve core in another embodiment of a switching valve provided in the present application.
[0035] Figure numerals: 100, switching valve; 10, valve core; 101, flow port; 102, notch; 20, valve body; 201, valve chamber; 202, interface; 2021, first interface; 2022, second interface; 2023, third interface; 203, input port; 30, sealing element; 301, through hole; 31, pressure groove; 32, mounting boss. DETAILED DESCRIPTION
[0036] 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.
[0037] 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.
[0038] 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.
[0039] 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 indirectly in contact 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.
[0040] 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.
[0041] See also Figures 1 to 10 The present application provides a switching valve 100, which includes a valve body 20, a valve core 10 and a sealing member 30; the valve core 10 is provided with a flow port 101; the valve body 20 is provided with a valve cavity 201, the valve core 10 is installed in the valve cavity 201, and the valve body 20 is also provided with an interface 202 connected to the valve cavity 201, and the interface 202 is used to communicate with the flow port 101; the sealing member 30 can be pressed between the valve core 10 and the valve body 20, and the sealing member 30 is provided with a through hole 301, and the through hole 301 is used to connect the flow port 101 and the interface 202.
[0042] In this way, the valve core 10 is connected to the interface 202 of the valve body 20 through the circulation port 101 to facilitate fluid circulation. By setting the seal 30 at the circulation port 101, the sealing performance when the circulation port 101 and the interface 202 are connected can be ensured. Correspondingly, the seal 30 is provided with a through hole 301 to avoid interfering with the communication state of the circulation port 101 and the interface 202. The valve core 10 and the valve body 20 jointly extrude the seal 30 to reduce or even eliminate the gap between the valve core 10 and the seal 30, and between the valve body 20 and the seal 30, thereby achieving sealing, preventing fluid leakage from the gap, and ensuring stable fluid flow. In some embodiments, the switching valve 100 can be set as a three-way valve, a four-way valve, etc.
[0043] For the sake of convenience of explanation, this application takes the valve core 10 as a rectangular parallelepiped as an example, defines the first direction as the height direction of the valve core 10, defines the second direction as the width direction of the valve core 10, and defines the third direction as the rotation axis direction of the valve core 10, that is, the length direction of the valve core 10, and describes it with the second direction as the x-axis, the third direction as the y-axis, and the first direction as the z-axis.
[0044] In an optional embodiment, a pressure gap is formed between the sealing member 30 and the valve core 10 on one side facing the valve core 10, and the pressure gap is connected to the valve cavity 201 and is arranged to avoid the flow port 101 and the through hole 301. In other words, the pressure gap is not connected to the flow port 101, nor is it connected to the through hole 301. In this way, fluid can be input into the pressure gap, thereby generating fluid pressure toward the valve body 20. Under the action of the fluid pressure, the sealing member 30 is tightly fitted with the valve body 20, which is conducive to improving the sealing effect.
[0045] like Figure 1 As shown, in a further embodiment, the valve body 20 is provided with an input port 203, and the valve core 10 is provided with a notch 102, the notch 102 is arranged at an interval with the flow port 101, and the notch 102 is used to communicate with a corresponding interface 202, and the input port 203, the valve cavity 201, the notch 102 and the corresponding interface 202 form a fluid channel, and the fluid channel is connected to the pressure gap.
[0046] In this way, the fluid can flow from the input port 203 into the valve cavity 201, communicate with the interface 202 through the notch 102, and flow out of the valve body 20 from the interface 202 to realize the process of fluid delivery. The structure is simple and easy to implement. In the process of fluid delivery, the delivered fluid flows into the pressure gap to generate a force on the seal 30 to enhance the extrusion force, which has the effect of making the best use of the fluid.
[0047] It should be noted that the fluid flowing into the input port 203 is a high-pressure fluid, that is, the valve chamber 201 is under high pressure; the fluid flowing between the interface 202 and the flow port 101 is a low-pressure fluid, so when the fluid flows between the interface 202, the through hole 301 and the flow port 101, the high-pressure fluid in the pressure gap generates an extrusion force on the seal 30 toward the valve body 20.
[0048] like Figure 3 , Figure 4 and Fig. 9 As shown, in an optional embodiment, a pressure groove 31 is provided on the side of the seal 30 facing the valve core 10, the pressure groove 31 penetrates the peripheral wall of the seal 30 and communicates with the valve cavity 201, and the groove wall of the pressure groove 31 and the valve core 10 are surrounded to form a pressure gap. In this way, by providing the pressure groove 31, the space between the seal 30 and the valve core 10 is increased, thereby forming the above-mentioned pressure gap, and the fluid exerts a force on the groove wall of the pressure groove 31 along the second direction, thereby squeezing the entire seal 30 toward the valve body 20 to reduce the gap between the two and achieve sealing.
[0049] In a further embodiment, the seal 30 is provided with pressure grooves 31 on both sides along the first direction, the pressure grooves 31 are formed from the side of the seal 30 facing the valve core 10 and are recessed away from the valve core 10 along the second direction, and the pressure grooves 31 are provided through the seal 30 at both ends along the third direction. In this way, along the first direction, both sides of the seal 30 can be affected by the fluid pressure, and the force is more uniform, which is conducive to uniform fit with the valve body 20 and ensures tightness. At the same time, along the third direction, the fluid can pass through the entire seal 30, further promoting the uniform force of the seal 30 along the third direction, and making the seal 30 evenly fit to the valve body 20 along the third direction.
[0050] like Figure 3 , Figure 4 and Fig. 9 As shown, in a further embodiment, the number of pressure grooves 31 is multiple, and the multiple pressure grooves 31 are arranged at intervals. In this way, the provision of multiple pressure grooves 31 increases the space of the pressure gap, increases the amount of fluid that penetrates into the pressure gap, and then increases the fluid pressure that squeezes the seal 30, further promoting the close fit between the seal 30 and the valve body 20.
[0051] like Figure 5 and Figure 6 As shown, in a further embodiment, the projection of each pressure groove 31 along the third direction is set to be tooth-shaped, which has a simple structure and is easy to process. In other embodiments, it can also be set to be square or arc-shaped.
[0052] like Figure 2 , Figure 3 and Fig. 9As shown, in an optional embodiment, the sealing member 30 is provided with a mounting boss 32, the mounting boss 32 extends from the edge of the through hole 301 toward the valve core 10, the mounting boss 32 extends into the flow port 101, and the outer wall of the mounting boss 32 is interference fit with the inner wall of the valve core 10. In this way, the interference fit setting makes the mounting boss 32 and the inner wall of the valve core 10 fit closely to reduce the gap, so that the fluid is not easy to leak, and the sealing between the sealing member 30 and the valve core 10 is achieved.
[0053] Since the structure of the flow port 101 of the valve core 10 is different, the setting of the corresponding mounting boss 32 is also changed accordingly. Next, the setting of the flow port 101 of the valve core 10 is explained.
[0054] like Figure 2 , Figure 7 , Figure 8 and Fig.10 As shown, in an optional embodiment, the valve core 10 is provided with flow ports 101 on both sides along the second direction, and the flow ports 101 on both sides are arranged alternately along the third direction, and a seal 30 is installed at the flow ports 101 on each side; the valve core 10 can rotate around its own axis to switch the connection between the flow ports 101 on both sides and the interface 202.
[0055] In this way, the valve core 10 can switch the flow ports 101 on both sides by rotating. The flow ports 101 on both sides are staggered along the third direction to achieve the connection between the flow ports 101 on both sides and different interfaces 202 respectively, so as to transport the fluid to different pipelines. A seal 30 is installed at the flow port 101 on each side to prevent internal leakage and promote sealing.
[0056] like Figure 2 and Figure 7 As shown, in a specific embodiment, two flow ports 101 are provided on each side of the valve core 10 along the second direction, and the two flow ports 101 are arranged at intervals along the third direction and connected to form a flow channel; and each flow port 101 is correspondingly connected to a through hole 301 and an interface 202. In this way, two through holes 301 need to be provided for one sealing member 30, and a corresponding mounting boss 32 is constructed at each through hole 301, so that each flow port 101 can be sealed.
[0057] like Figure 7As shown, in a further embodiment, two flow ports 101 are provided on each side of the valve core 10 along the second direction, and one flow port 101 corresponds to a central axis; the central axes of the two flow ports 101 on one side are the first central axis P1 and the second central axis P2, and the central axes of the two flow ports 101 on the other side are the third central axis P3 and the fourth central axis P4; along the second direction, the first central axis P1 and the third central axis P3 coincide or tend to coincide, and along the third direction, the second central axis P2 and the fourth central axis P4 are separated by the first central axis P1 and / or the third central axis P3, and the distance between the second central axis and the first central axis is L1, and the distance between the third central axis and the fourth central axis is L2, and L1=L2.
[0058] Such a configuration facilitates the determination of the position of each flow port 101, and during processing, accurate positioning can be achieved, thereby improving production efficiency. At the same time, when the values of L1 and L2 are minimized while ensuring structural strength, the size of the valve core 10 along the third direction can be minimized, which is conducive to reducing the size of the valve core 10, reducing material loss, and reducing production costs.
[0059] like Figure 7 As shown, in a further embodiment, the valve core 10 is provided with notches 102 on both sides along the second direction, and the notches 102 on each side are arranged at intervals from the flow ports 101 along the third direction, wherein the central axis of one of the notches 102 coincides with or tends to coincide with the second central axis, and the central axis of the other notch 102 coincides with or tends to coincide with the fourth central axis. In this way, it is also convenient to determine the processing position of the notch 102 during processing, so that the interface 202 of the valve body 20 can be connected to different flow ports 101 and notches 102 to achieve reversing.
[0060] like Figure 1 As shown, specifically, the side wall of the valve body 20 along one side of the second direction is provided with three interfaces 202 arranged at intervals along the third direction, which are divided into a first interface 2021, a second interface 2022 and a third interface 2023. The valve core 10 has a first position and a second position. In the first position, the first interface 2021 and the second interface 2022 of the valve body 20 are respectively connected to the flow port 101 on one side of the valve core 10, and the third interface 2023 of the valve body 20 is connected to the notch 102 on the side. In the second position, the second interface 2022 and the third interface 2023 of the valve body 20 are respectively connected to the flow port 101 on the other side of the valve core 10, and the first interface 2021 is connected to the notch 102 on the other side of the valve core 10, thereby realizing the connection of different pipelines.
[0061] like Figure 8 and Fig. 9As shown, in another specific embodiment, a flow port 101 is provided on each side of the valve core 10 along the second direction, and each flow port 101 on each side corresponds to connecting a through hole 301 and any two adjacent interfaces 202. In this way, a seal 30 is provided with a through hole 301 and a mounting protrusion, and the seal 30 and the valve core 10 only need to be drilled once, respectively, which is easy to operate. At the same time, the valve core 10 is connected with the two interfaces 202 through a flow port 101, and the inside of the flow port 101 is in the shape of a groove that is opened, that is, the flow port 101 is formed by the surface of the valve core 10 being recessed inward along the second direction. The fluid flows in from one interface 202, passes through the flow channel in the flow port 101, and flows out from the other interface 202. It has a small turning radius and a small flow resistance, which is conducive to reducing pressure loss and promoting fluid flow.
[0062] like Fig.10 As shown, in a further embodiment, the valve core 10 is provided with a flow port 101 on each side along the second direction, and one flow port 101 corresponds to two center axes arranged at intervals; the center axes of the flow port 101 on one side are the first center axis P1 and the second center axis P2, and the center axes of the flow port 101 on the other side are the third center axis P3 and the fourth center axis P4; along the second direction, the first center axis P1 and the third center axis P3 coincide or tend to coincide, and along the third direction, the second center axis P2 and the fourth center axis P4 are separated by the first center axis P1 and / or the third center axis P3, and the distance between the second center axis P2 and the first center axis P1 is equal to the distance between the third center axis P3 and the fourth center axis P4. In this way, it is convenient to determine the position and size of the flow port 101, and the corresponding effects, the setting of the notch 102, the matching of the valve core 10 and the valve body 20 are similar to the above-mentioned valve core 10 having two flow ports 101 on each side and the embodiment, which can be referred to and will not be repeated here.
[0063] 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.
[0064] 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 switching valve, characterized in that: The switching valve comprises: The valve core (10) is provided with a flow port (101); A valve body (20) is provided with a valve cavity (201), the valve core (10) is installed in the valve cavity (201), and the valve body (20) is also provided with an interface (202) connected to the valve cavity (201), and the interface (202) is used to communicate with the flow port (101); A sealing member (30) is disposed between the valve core (10) and the valve body (20), and the sealing member (30) is provided with a through hole (301), and the through hole (301) is used to connect the flow port (101) and the interface (202).
2. The switching valve according to claim 1, characterized in that: A pressure gap is formed between the sealing member (30) and the valve core (10) on one side thereof facing the valve core (10); the pressure gap is communicated with the valve cavity (201) and is arranged away from the flow port (101) and the through hole (301).
3. The switching valve according to claim 2, characterized in that: The valve body (20) is provided with an input port (203), the valve core (10) is provided with a notch (102), the notch (102) is arranged at an interval with the flow port (101), the notch (102) is used to communicate with a corresponding interface (202), and the input port (203), the valve cavity (201), the notch (102) and the corresponding interface (202) form a fluid channel.
4. The switching valve according to claim 3, characterized in that: A pressure groove (31) is provided on the side of the sealing member (30) facing the valve core (10); the pressure groove (31) penetrates the peripheral wall of the sealing member (30) and communicates with the valve cavity (201); the groove wall of the pressure groove (31) and the valve core (10) are arranged to form the pressure gap.
5. The switching valve according to claim 4, characterized in that: The pressure grooves (31) are provided in a plurality, and the plurality of pressure grooves (31) are arranged at intervals.
6. The switching valve according to claim 1, characterized in that: The sealing member (30) is provided with a mounting boss (32), wherein the mounting boss (32) extends from the edge of the through hole (301) toward the valve core (10), the mounting boss (32) extends into the flow port (101), and the outer wall of the mounting boss (32) is interference fit with the inner wall of the valve core (10).
7. The switching valve according to any one of claims 1 to 6, characterized in that: The valve core (10) is provided with the flow openings (101) on both sides along the second direction, respectively; along the third direction, the flow openings (101) on both sides are arranged alternately, and the flow openings (101) on each side are installed with the sealing member (30); the valve core (10) can rotate around its own axis to switch the communication between the flow openings (101) on both sides and the interface (202).
8. The switching valve according to claim 7, characterized in that: The valve core (10) is provided with two flow openings (101) on each side along the second direction, and the two flow openings (101) are arranged at intervals along the third direction and connected to form a flow channel; each flow opening (101) is connected to a corresponding through hole (301) and a port (202); or, The valve core (10) is provided with a flow port (101) on each side along the second direction, and the flow port (101) on each side is correspondingly connected to one through hole (301) and any two adjacent interfaces (202).
9. The switching valve according to claim 8, characterized in that: The valve core (10) is provided with two flow ports (101) on each side along the second direction, and each flow port (101) has a corresponding central axis; the central axes of the two flow ports (101) on one side are the first central axis and the second central axis, and the central axes of the two flow ports (101) on the other side are the third central axis and the fourth central axis; Along the second direction, the first central axis and the third central axis coincide or tend to coincide, and along the third direction, the second central axis and the fourth central axis are separated by the first central axis and / or the third central axis, and the distance between the second central axis and the first central axis is equal to the distance between the third central axis and the fourth central axis.
10. The switching valve according to claim 8, characterized in that: The valve core (10) is provided with a flow port (101) on each side along the second direction, and each flow port (101) corresponds to two center axes arranged at intervals; the center axis of the flow port (101) on one side is the first center axis and the second center axis, and the center axis of the flow port (101) on the other side is the third center axis and the fourth center axis; Along the second direction, the first central axis and the third central axis coincide or tend to coincide, and along the third direction, the second central axis and the fourth central axis are separated by the first central axis and / or the third central axis, and the distance between the second central axis and the first central axis is equal to the distance between the third central axis and the fourth central axis.