Directional control valve

Abstract

A directional control valve provided with a plurality of external flow channel ports for fluid entry and exit. A flow channel switching assembly is further arranged inside the directional control valve and configured to provide different internal flow channels in different switching positions, so as to connect different external flow channel ports. The flow channel switching assembly comprises: a movable valve member (121), which is provided with a plurality of movable valve member flow channels (1211), wherein at least one movable valve member flow channel penetrates the body of the movable valve member and connects different external flow channel ports located on two sides of the movable valve member; and a fixed valve member (122), which is provided with a plurality of fixed valve member flow channels, wherein the movable valve member abuts against the fixed valve member; the movable valve member can be driven to rotate around a first axis to switch positions; and in the different switching positions, different movable valve member flow channels and fixed valve member flow channels form different internal flow channels so as to connect different external flow channel ports.

Description

reversing valve Technical Field

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

[0002] Multi-way directional valves are mainly used in piping systems as a reversing component.

[0003] In air conditioning systems, the energized solenoid coil activates the pilot valve, changing the pressure differential within it. This in turn drives the slide rod of the main valve, changing the direction of refrigerant flow and switching between cooling and heating systems. In new energy vehicles, multi-way reversing valves are often used to control the flow of heating or cooling fluids between battery packs, motors, and other systems to achieve various control and operational needs.

[0004] The valve cores in the above-mentioned reversing valves are mostly direct-acting. The reversing valves with this structure have large valve core and valve body structures, which are not conducive to the miniaturization of the system, and there is a problem of increased wear leading to seal failure. Utility Model Content

[0005] The present application provides a reversing valve, which is provided with multiple external flow passages for fluid inflow and outflow, and a flow passage switching assembly is also provided inside the reversing valve, which is used to provide different internal flow passages to connect different external flow passages at different switching positions. The flow passage switching assembly includes: a movable valve member, the movable valve member is provided with multiple movable valve member flow passages, at least one of which passes through the body of the movable valve member and connects different external flow passages located on both sides of the movable valve member; a fixed valve member, the fixed valve member is provided with multiple fixed valve member flow passages; wherein, the movable valve member abuts against the fixed valve member, and the movable valve member can be driven to rotate around a first axis to achieve a switching position, and, at different switching positions, different movable valve member flow passages and fixed valve member flow passages form different internal flow passages to connect different external flow passages.

[0006] Optionally, the multiple movable valve member flow channels include a first flow channel, which is a first through hole, and the first through hole has openings on both end faces of the movable valve member along the direction of the first axis; the external flow channel opening includes a first flow channel opening, which is arranged on a side of the movable valve member away from the fixed valve member, and the medium entering the interior of the reversing valve from the first flow channel opening enters one of the multiple fixed valve member flow channels through the first flow channel.

[0007] Optionally, the external flow port also includes a second flow port, a third flow port and a fourth flow port; the different switching positions include a first position and a second position; when the movable valve member is located at the first position, the first flow port is connected to the second flow port, and the third flow port is connected to the fourth flow port; when the movable valve member is located at the second position, the first flow port is connected to the third flow port, and the second flow port is connected to the fourth flow port.

[0008] Optionally, the multiple movable valve member flow channels also include a reversing flow channel, the reversing flow channel is a groove or a second through hole, the opening of the groove or the two end openings of the second through hole are both located on the end surface of the movable valve member close to one end of the fixed valve member; the fixed valve member is provided with a second flow channel connected to the second flow channel opening, a third flow channel connected to the third flow channel opening, and a fourth flow channel connected to the fourth flow channel opening; when the movable valve member is located in the first position, the first flow channel is connected to the second flow channel, and the third flow channel is connected to the fourth flow channel through the reversing flow channel; when the movable valve member is located in the second position, the first flow channel is connected to the fourth flow channel, and the second flow channel is connected to the third flow channel through the reversing flow channel.

[0009] Optionally, the reversing valve also includes a valve body, which has a cylindrical valve cavity, the flow channel switching assembly is arranged in the valve cavity, the external flow channel opening is arranged on the valve body, and the valve body also includes a first annular groove, a second annular groove and a third annular groove arranged in the valve cavity and arranged in sequence along the direction of the first axis; the first flow channel opening is arranged along the radial direction of the valve cavity and is connected to the first annular groove; the second flow channel opening is arranged along the radial direction and is connected to the second annular groove; the third flow channel opening is arranged along the radial direction and is connected to the third annular groove; the fourth flow channel opening is arranged at one end of the valve body close to the fixed valve member and is connected to the valve cavity.

[0010] Optionally, the second flow channel includes a second liquid flow groove and a second liquid flow hole, the second liquid flow groove is correspondingly arranged with the second annular groove and is connected with the second annular groove, and the second liquid flow hole extends from the upper surface of the fixed valve member along the direction of the first axis and is connected with the second liquid flow groove; the third flow channel includes a third liquid flow groove and a third liquid flow hole, the third liquid flow groove is correspondingly arranged with the third annular groove and is connected with the third annular groove, and the third liquid flow hole extends from the upper surface of the fixed valve member along the direction of the first axis and is connected with the third liquid flow groove; wherein, the upper surface of the fixed valve member is the side of the fixed valve member close to the movable valve member; the fourth flow channel includes a fourth liquid flow hole that passes through the fixed valve member along the direction of the first axis.

[0011] Optionally, the reversing valve further includes a driving unit for driving the movable valve member to rotate relative to the fixed valve member to switch between the first position and the second position; when the movable valve member is located in the first position, the first through hole is connected to the second liquid hole, and the third liquid hole and the fourth liquid hole are connected through the reversing flow channel; when the movable valve member is located in the second position, the first through hole is connected to the fourth liquid hole, and the third liquid hole and the second liquid hole are connected through the reversing flow channel.

[0012] Optionally, the drive unit is connected to the valve body by a threaded connection, and the reversing valve further includes: a connecting seat, which is arranged in the valve cavity, and when the drive unit and the valve body are tightened, one end of the connecting seat abuts against the drive assembly, and the other end of the connecting seat abuts against the fixed valve member, and an accommodating space is formed between the connecting seat and the fixed valve member, and the movable valve member is arranged in the accommodating space; a valve core shaft assembly, which is passed through the connecting seat and is connected to the drive unit and the movable valve member, and is used to drive the movable valve member to move under the drive of the drive unit, and to limit the rotation range of the movable valve member.

[0013] Optionally, at least one communicating hole is provided on a side wall of the connecting seat, and the at least one communicating hole is used to connect the first flow channel opening and the first through hole.

[0014] Optionally, the valve core shaft assembly includes: a drive shaft, a first end of which is connected to the movable valve member, and a second end of which is connected to the drive unit; a limit rod, which is sleeved on the drive shaft, and the extension direction of the limit rod is perpendicular to the drive shaft, and the limit rod abuts against the top cover of the connecting seat, for limiting the rotation range of the drive shaft; a spring, which is arranged between the limit rod and the movable valve member, for providing thrust so that the lower surface of the movable valve member is attached to the upper surface of the fixed valve member.

[0015] Optionally, the fixed valve member also includes a first sealing groove, a second sealing groove and a third sealing groove arranged in sequence along the direction of the first axis; the first sealing groove is arranged between the upper surface of the fixed valve member and the second liquid flow groove, the second sealing groove is arranged between the second liquid flow groove and the third liquid flow groove, and the third sealing groove is arranged between the third liquid flow groove and the lower surface of the fixed valve member; the reversing valve also includes: an annular sealing ring arranged in the first sealing groove, the second sealing groove and the third sealing groove, for sealing the gap between the fixed valve member and the valve seat.

[0016] According to the reversing valve provided in the embodiment of the present application, a movable valve component and a fixed valve component that can rotate relative to each other are arranged in the valve body. By adjusting the matching relationship between the movable valve component and the fixed valve component, different internal flow channels are formed inside the valve body, thereby realizing the switching of the connection relationship between multiple external flow channels. The reversing valve has a simple structure, a small size and fast switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] FIG1 is a schematic structural diagram of a reversing valve provided in an embodiment of the present application.

[0018] FIG. 2 is a cross-sectional view of FIG. 1 .

[0019] FIG3 is a schematic diagram of a partial structure of a movable valve member.

[0020] FIG4 is a schematic diagram of the partial structure of the fixed valve member.

[0021] FIG5 is a schematic diagram showing the communication status of multiple flow passages when the movable valve member is located at the first position.

[0022] FIG6 is a schematic diagram showing the communication status of multiple flow passages when the movable valve member is located at the first position.

[0023] FIG7 is a schematic diagram showing the communication status of multiple flow passages when the movable valve member is located at the second position.

[0024] FIG8 is a schematic diagram showing the communication status of multiple flow passages when the movable valve member is located at the second position. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0026] It should be noted that the terms "including," "having," and any variations thereof in the embodiments and drawings of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to the process, method, product, or apparatus.

[0027] The terms "first," "second," "third," and "fourth," etc., in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, rather than to describe a specific order. In addition, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements, but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0028] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] In order to solve the above problems, an embodiment of the present application provides a reversing valve. The technical solution provided by the embodiment of the present application will be described in detail below in conjunction with the accompanying drawings.

[0030] FIG1 is a schematic structural diagram of a reversing valve provided in an embodiment of the present application, and FIG2 is a cross-sectional view of FIG1 .

[0031] As shown in Figures 1 and 2, the reversing valve 100 is provided with multiple external flow channel openings, which are used to allow fluid to flow in or out; the multiple external flow channels can be, for example, the first flow channel opening 111, the second flow channel opening 112, the third flow channel opening 113 and the fourth flow channel opening 114 shown in Figure 1, and the multiple flow channels are formed on the valve body 110 of the reversing valve 100; it should be noted here that the four flow channel openings shown in Figure 1 are only examples, and at this time the reversing valve is a four-way reversing valve. The number of external flow channel openings in the reversing valve in the embodiment of the present application is not limited to four, for example, it can also be three, five or any number.

[0032] A flow channel switching assembly 120 is also provided inside the reversing valve 100, which is used to provide different internal flow channels to connect different external flow channel openings at different switching positions; the flow channel switching assembly 120 in Figure 1 includes a movable valve component 121 and a fixed valve component 122.

[0033] The movable valve member 121 is provided with multiple movable valve flow channels, at least one of which extends through the movable valve body and connects to different external flow channel openings on either side of the movable valve member. The fixed valve member 122 is provided with multiple fixed valve flow channels. The movable valve member 121 abuts the fixed valve member 122; furthermore, the movable valve member 121 can be driven to rotate about a first axis to achieve a switching position. In different switching positions, different movable valve flow channels and fixed valve flow channels form different internal flow channels to connect to different external interfaces.

[0034] Still taking the reversing valve 100 shown in Figure 1 as an example, the movable valve member 121 can be driven to switch between a first position and a second position around a first axis; when the movable valve member 121 is in the first position, the first flow channel opening 111 and the second flow channel opening 112 are connected, and the third flow channel opening 113 and the fourth flow channel opening 114 are connected; when the movable valve member 121 is in the second position, the first flow channel opening 111 and the third flow channel opening 113 are connected, and the second flow channel opening 112 and the fourth flow channel opening 114 are connected.

[0035] According to the reversing valve provided in the embodiment of the present application, a movable valve component and a fixed valve component that can rotate relative to each other are arranged in the valve body. By adjusting the matching relationship between the movable valve component and the fixed valve component, different internal flow channels are formed inside the valve body, thereby realizing the switching of the connection relationship between multiple external flow channels. The reversing valve has a simple structure, a small size and fast switching.

[0036] Figure 3 is a schematic diagram of the partial structure of the movable valve member 121 in Figure 1. In combination with Figures 1 to 3, the multiple movable valve member flow channels on the movable valve member 121 include a first flow channel, which is a first through hole 1211. The first through hole 1211 has openings on both end faces of the movable valve member 121 along the direction of the first axis; that is, the first through hole 1211 passes through the movable valve member 121 along the direction of the first axis.

[0037] The aforementioned first flow channel opening 111 is arranged on the side of the movable valve component 121 away from the fixed valve component 122. The medium flowing into the reversing valve from the first flow channel opening 111 enters one of the multiple fixed valve component flow channels through the first flow channel; in other words, the medium flowing in from the first flow channel opening 111 flows in from the top of the movable valve component 121 and then flows downward along the direction of the first axis. Since the flowing medium has a certain pressure, it can apply a downward force along the first axis to the movable valve component 121 during its flow process, so that the lower surface of the movable valve component 121 can fit tightly with the upper surface of the fixed valve component 122, thereby having a better sealing effect.

[0038] In some embodiments, referring to FIG3 , the multiple movable valve member flow channels on the movable valve member 121 further include a reversing flow channel, which may be the groove 1212 shown in FIG3 , and the openings of the groove 1212 are all located on the end surface of the movable valve member 121 close to one end of the fixed valve member 122 .

[0039] Alternatively, as an implementation manner, the reversing flow channel may be a second through hole, and both end openings of the second through hole are located on an end surface of the movable valve component close to one end of the fixed valve component.

[0040] Figure 4 shows a schematic diagram of the partial structure of the fixed valve component 122. As shown in Figure 4, the fixed valve component 122 is provided with a second flow channel 1222 connected to the second flow channel opening 112, a third flow channel 1223 connected to the third flow channel opening 113, and a fourth flow channel 1224 connected to the fourth flow channel opening 114.

[0041] When the movable valve member is in the first position, as shown in Figures 5 and 6, the first flow channel 1211 is connected to the second flow channel 1222, and the third flow channel 1223 is connected to the fourth flow channel 1224 through the reversing flow channel 1212, so that the first flow channel port 111 and the second flow channel port 112 of the reversing valve are connected, and the third flow channel port 113 and the fourth flow channel port 114 are connected.

[0042] When the movable valve member is in the second position, as shown in Figures 7 and 8, the first flow channel 1211 is connected to the third flow channel 1223, and the second flow channel 1222 is connected to the fourth flow channel 1224 through the reversing flow channel 1212, so that the first flow channel port 111 and the third flow channel port 113 of the reversing valve are connected, and the second flow channel port 112 and the fourth flow channel port 114 are connected.

[0043] In some embodiments, referring to FIG. 1 and FIG. 2 , the valve body 110 includes a first annular groove 115 , a second annular groove 116 , and a third annular groove 117 disposed in the valve cavity and arranged along the direction of the first axis.

[0044] As mentioned above, multiple flow openings in the reversing valve are all formed on the valve body 110, wherein the first flow opening 111 is arranged along the radial direction of the valve cavity and is connected to the first annular groove 115; the second flow opening 112 is arranged along the radial direction and is connected to the second annular groove 116; the third flow opening 113 is arranged along the radial direction and is connected to the third annular groove 117; the fourth flow opening 114 is arranged at one end of the valve body 110 close to the fixed valve member 122 and is connected to the valve cavity.

[0045] 1, 2, and 4, the second flow channel 1222 on the fixed valve member 122 includes a second liquid-transmitting groove 1222A and a second liquid-transmitting hole 1222B. The second liquid-transmitting groove 1222A is disposed corresponding to and communicates with the second annular groove 116. The second liquid-transmitting hole 1222B extends from the upper surface of the fixed valve member 122 along the first axis and communicates with the second liquid-transmitting groove 1222A. The medium flowing into the second liquid-transmitting hole 1222B can pass through the second liquid-transmitting groove 1222A and the second annular groove 116 before exiting the second flow channel opening 112.

[0046] The third flow channel 1223 includes a third liquid flow channel 1223A and a third liquid flow hole 1223B. The third liquid flow channel 1223A is corresponding to and communicates with the third annular groove 117. The third liquid flow hole 1223B extends from the upper surface of the fixed valve member 122 along the first axis and communicates with the third liquid flow channel 1223A. The medium flowing into the third liquid flow hole 1223B can pass through the third liquid flow channel 1223A and the third annular groove 117 and then flow out of the third flow channel opening 113.

[0047] The fourth flow channel 1224 includes a fourth liquid hole 1224A that penetrates the fixed valve member 122 along the direction of the first axis. The fourth liquid hole 1224A is connected to the fourth flow channel opening 114 set at the bottom of the valve body 110. In other words, the medium flowing into the fourth liquid hole 1224A will flow out from the fourth flow channel opening 114.

[0048] In some embodiments, the reversing valve 100 further includes a driving unit, which is threadedly connected to the valve body and is used to drive the movable valve member 121 to rotate relative to the fixed valve member 122 to switch between the first position and the second position.

[0049] 5 to 8 , when the movable valve member 121 is in the first position, the first through hole 1211 is connected to the second liquid passage hole 1222B, and the third liquid passage hole 1223B is connected to the fourth liquid passage hole 1224A via the reversing channel 1212. More specifically, the medium flowing in from the first channel opening 111 enters the first annular groove 115, passes through the first through hole 1211, flows into the second liquid passage hole 1222B, passes through the second liquid passage groove 1222A, flows into the second annular groove 116, and then flows out of the second channel opening 112 through the second annular groove 116. The medium flowing in from the third channel opening 113 first passes through the third annular groove 117, flows into the third liquid passage groove 1223A, and then flows into the reversing channel 1212 through the third liquid passage hole 1223B. The medium flowing out of the reversing channel 1212 passes through the fourth liquid passage hole 1224A and flows out of the fourth channel opening 114.

[0050] When the movable valve member 121 is located in the second position, the first through hole 1211 is connected to the fourth liquid passage hole 1224A, and the third liquid passage hole 1223B is connected to the second liquid passage hole 1222B through the reversing channel 1212; more specifically, the medium flowing in from the first channel opening 111 flows into the fourth liquid passage hole 1224B through the first through hole 1211, and then flows out from the fourth channel opening 114; the medium flowing in from the third channel opening 113 flows into the third liquid passage groove 1223A after passing through the third annular groove 117, and then flows into the reversing channel 1212 after passing through the third liquid passage hole; the medium flowing out of the reversing channel 1212 flows into the second annular groove 116 after passing through the second liquid passage hole 1212B, and then flows out from the second channel opening 112.

[0051] In some embodiments, referring to Figures 1 and 2 , the reversing valve further includes a connecting seat 140 and a valve core shaft assembly 150. The connecting seat 140 is disposed in the valve cavity. When the drive unit is screwed onto the valve body via threads, one end of the connecting seat 140 abuts against the drive assembly, while the other end abuts against the fixed valve member 121. An accommodating space is formed between the connecting seat 140 and the fixed valve member 121, and the movable valve member 122 is disposed in the accommodating space.

[0052] The valve core shaft assembly 150 is disposed in the connecting seat 140 and is connected to the driving unit and the movable valve member 122 . It is used to drive the movable valve member 122 to move under the drive of the driving unit 140 and limit the rotation range of the movable valve member 122 .

[0053] In some embodiments, at least one connection hole 141 is provided on the side wall of the connection base 140, and the at least one connection hole is used to connect the first flow channel opening 111 and the first through hole 1211. The embodiment of the present application does not limit the number of connection holes 141 on the connection base 140, and the number of the at least one connection hole 141 can be, for example, three as shown in the figure.

[0054] In some embodiments, the valve core shaft assembly 150 includes a drive shaft 151 , a limiting rod 152 , a spring 153 , and a limiting member 154 . Among them, the first end of the drive shaft 151 is connected to the dynamic valve member 121, and the second end is connected to the drive unit; the limit rod 152 is sleeved on the drive shaft, and its extension direction is perpendicular to the drive shaft 151. The limit rod 152 abuts against the top cover of the connecting seat 140 to limit the rotation range of the drive shaft 151; the spring 153 is arranged between the limit rod 152 and the dynamic valve member 121 to provide thrust so that the lower surface of the dynamic valve member 121 is in contact with the upper surface of the fixed valve member 122; the limit member 154 can be fixed on the connecting seat 140, and more specifically, the limit member 154 extends downward from the top surface of the inner side of the connecting seat 140. When the drive shaft 151 and the limit rod 152 rotate to a certain angle under the drive of the drive unit, the end of the limit rod 152 contacts the limit member 154. The limit member 154 will prevent the movement of the limit rod 152, thereby restricting the rotation range of the drive shaft 151 and the dynamic valve member 122. The limiting member 154 may be a limiting pin or a limiting boss, and the specific structure of the limiting member is not limited herein. In addition, the limiting member 154 may be integrally formed with the connecting seat 140, or may be divided into two separate pieces and installed in a fixed connection manner.

[0055] In some embodiments, as shown in Figures 2 and 4, the fixed valve member 122 further includes a first sealing groove 1225, a second sealing groove 1226, and a third sealing groove 1227 arranged in sequence along the first axis. The first sealing groove 1225 is disposed between the upper surface of the fixed valve member 122 and the second liquid flow groove 1222A, the second sealing groove 1226 is disposed between the second liquid flow groove 1222A and the third liquid flow groove 1223A, and the third sealing groove 1227 is disposed between the third liquid flow groove 1223A and the lower surface of the fixed valve member 122.

[0056] The reversing valve provided in the embodiment of the present application further includes a plurality of sealing rings 160 , which are respectively arranged in the first sealing groove 1225 , the second sealing groove 1226 and the third sealing groove 1227 to seal the gap between the fixed valve member 122 and the valve seat 110 .

[0057] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying 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] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0059] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0060] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0062] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A reversing valve is provided with multiple external flow channels for fluid inlet and outlet, and a flow channel switching assembly is further provided inside the reversing valve for providing different internal flow channels to connect different external flow channels when in different switching positions, characterized in that: The flow channel switching component includes: A movable valve member, wherein the movable valve member is provided with a plurality of movable valve member flow channels, wherein at least one of the movable valve member flow channels penetrates the body of the movable valve member and communicates with different external flow channel openings located on both sides of the movable valve member; A fixed valve member, wherein the fixed valve member is provided with a plurality of fixed valve member flow channels; In which, the movable valve member abuts against the fixed valve member, and the movable valve member can be driven to rotate around a first axis to achieve a switching position, and, at different switching positions, different movable valve member flow channels and fixed valve member flow channels form different internal flow channels to connect different external flow channel openings.

2. The reversing valve according to claim 1, characterized in that: The plurality of movable valve member flow channels include a first flow channel, the first flow channel being a first through hole, the first through hole having openings on both end surfaces of the movable valve member in the direction along the first axis; The external flow channel includes a first flow channel, which is arranged on a side of the movable valve component away from the fixed valve component. The medium entering the reversing valve from the first flow channel enters one of the multiple fixed valve component flow channels through the first flow channel.

3. The reversing valve according to claim 2, characterized in that: The external flow channel openings further include a second flow channel opening, a third flow channel opening and a fourth flow channel opening; The different switching positions include a first position and a second position; When the movable valve member is located at the first position, the first flow channel is connected to the second flow channel, and the third flow channel is connected to the fourth flow channel; When the movable valve member is located at the second position, the first flow channel opening is communicated with the third flow channel opening, and the second flow channel opening is communicated with the fourth flow channel opening.

4. The reversing valve according to claim 3, characterized in that: The plurality of movable valve member flow channels further include a reversing flow channel, the reversing flow channel being a groove or a second through hole, the opening of the groove or the openings at both ends of the second through hole being located on an end surface of the movable valve member close to one end of the fixed valve member; The fixed valve member is provided with a second flow channel communicating with the second flow channel opening, a third flow channel communicating with the third flow channel opening, and a fourth flow channel communicating with the fourth flow channel opening; When the movable valve member is located at the first position, the first flow channel is connected to the second flow channel, and the third flow channel is connected to the fourth flow channel through the reversing flow channel; When the movable valve member is located at the second position, the first flow channel is communicated with the fourth flow channel, and the second flow channel is communicated with the third flow channel through the reversing flow channel.

5. The reversing valve according to claim 4, characterized in that: The reversing valve further includes a valve body having a cylindrical valve cavity, the flow channel switching assembly being disposed in the valve cavity, the external flow channel opening being disposed on the valve body, and the valve body further including a first annular groove, a second annular groove, and a third annular groove disposed in the valve cavity and sequentially arranged along the direction of the first axis; The first flow channel opening is arranged along the radial direction of the valve cavity and is communicated with the first annular groove; The second flow channel opening is arranged along the radial direction and communicates with the second annular groove; The third flow channel opening is arranged along the radial direction and communicates with the third annular groove; The fourth flow channel is arranged at one end of the valve body close to the fixed valve member and is communicated with the valve cavity.

6. The reversing valve according to claim 5, characterized in that: The second flow channel includes a second liquid passage groove and a second liquid passage hole, the second liquid passage groove is arranged corresponding to the second annular groove and is communicated with the second annular groove, and the second liquid passage hole extends from the upper surface of the fixed valve member along the direction of the first axis and is communicated with the second liquid passage groove; The third flow channel includes a third liquid passage groove and a third liquid passage hole, the third liquid passage groove is correspondingly arranged and communicated with the third annular groove, and the third liquid passage hole extends from the upper surface of the fixed valve member along the direction of the first axis and communicates with the third liquid passage groove; Wherein, the upper surface of the fixed valve member is a surface of the fixed valve member close to the movable valve member; The fourth flow channel includes a fourth liquid hole penetrating the fixed valve member along the direction of the first axis.

7. The reversing valve according to claim 6, characterized in that: The reversing valve further includes a driving unit for driving the movable valve member to rotate relative to the fixed valve member to switch between the first position and the second position; When the movable valve member is located at the first position, the first through hole is connected to the second liquid hole, and the third liquid hole is connected to the fourth liquid hole through the reversing flow channel; When the movable valve member is located at the second position, the first through hole is communicated with the fourth liquid passage hole, and the third liquid passage hole is communicated with the second liquid passage hole through the reversing flow channel.

8. The reversing valve according to claim 7, characterized in that: The driving unit is connected to the valve body via threads, and the reversing valve further comprises: a connecting seat disposed in the valve cavity, wherein when the driving unit is screwed onto the valve body, one end of the connecting seat abuts against the driving assembly, and the other end of the connecting seat abuts against the fixed valve member, forming an accommodating space between the connecting seat and the fixed valve member, and the movable valve member is disposed in the accommodating space; The valve core shaft assembly is inserted into the connecting seat and connected to the driving unit and the movable valve member. The valve core shaft assembly is used to drive the movable valve member to move under the drive of the driving unit and to limit the rotation range of the movable valve member.

9. The reversing valve according to claim 8, characterized in that: At least one communicating hole is provided on the side wall of the connecting seat, and the at least one communicating hole is used to connect the first flow channel opening and the first through hole.

10. The reversing valve according to claim 9, characterized in that: The valve core shaft assembly includes: a drive shaft, a first end of which is connected to the movable valve member, and a second end of which is connected to the drive unit; a limit rod, sleeved on the drive shaft, the extension direction of the limit rod being perpendicular to the drive shaft, the limit rod abutting against the top cover of the connecting seat, and being used to limit the rotation range of the drive shaft; A spring is provided between the limiting rod and the movable valve member and is used for providing a thrust so that the lower surface of the movable valve member is in contact with the upper surface of the fixed valve member.

11. The reversing valve according to any one of claims 5 to 10, characterized in that: The fixed valve member further includes a first sealing groove, a second sealing groove and a third sealing groove which are sequentially arranged along the direction of the first axis; The first sealing groove is provided between the upper surface of the fixed valve member and the second liquid passage groove, the second sealing groove is provided between the second liquid passage groove and the third liquid passage groove, and the third sealing groove is provided between the third liquid passage groove and the lower surface of the fixed valve member; The reversing valve further includes an annular sealing ring provided in the first sealing groove, the second sealing groove and the third sealing groove, for sealing the gap between the fixed valve member and the valve seat.

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