Reversing valve

Abstract

The utility model provides a reversing valve which is provided with a plurality of external flow channel openings for fluid to flow in and out, a flow channel switching assembly is further arranged in the reversing valve and used for providing different internal flow channels to communicate with the different external flow channel openings when the reversing valve is at different switching positions, and the flow channel switching assembly comprises a movable valve part and a movable valve part, the movable valve part is provided with a plurality of movable valve part flow channels, and at least one movable valve part flow channel penetrates through a body of the movable valve part and communicates with different external flow channel openings located in the two sides of the movable valve part. The fixed valve piece is provided with a plurality of fixed valve piece runners; wherein the movable valve part is connected with the fixed valve part in an abutting mode, the movable valve part can be driven to rotate around a first axis to achieve position switching, and in different switching positions, different movable valve part flow channels and fixed valve part flow channels form different internal flow channels so as to be communicated with different external flow channel openings.

Description

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 the air conditioning system, the pilot valve is activated by the electromagnetic coil, and the pressure difference in the pilot valve is changed, which in turn drives the slide bar of the main valve body to slide, thereby changing the flow direction of the refrigerant and switching between the cooling and heating systems. In the field of 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 different controls and operations.

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

[0005] The present application provides a reversing valve, which is provided with a plurality of external flow passages for fluid inlet and outlet. A flow passage switching assembly is also provided inside the reversing valve for providing different internal flow passages to connect different external flow passages at different switching positions. The flow passage switching assembly comprises: a movable valve member, wherein the movable valve member is provided with a plurality of movable valve member flow passages, wherein at least one of the movable valve member flow passages runs 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, wherein the fixed valve member is provided with a plurality of 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 component 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 component along the direction of the first axis; the external flow channel opening includes a first flow channel opening, and the first flow channel opening is arranged on a side of the movable valve component away from the fixed valve component, and the medium entering the interior of the reversing valve from the first flow channel opening enters one of the multiple fixed valve component flow channels through the first flow channel.

[0007] Optionally, the external flow channel opening also includes 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 opening is connected to the second flow channel opening, and the third flow channel opening is connected to the fourth flow channel opening; when the movable valve member is located at the second position, the first flow channel opening is connected to the third flow channel opening, and the second flow channel opening is connected to the fourth flow channel opening.

[0008] Optionally, the multiple movable valve member flow channels also include a reversing flow channel, which is a groove or a second through hole, and 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, the valve body 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, 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 passage groove and a second liquid passage hole, the second liquid passage groove is arranged corresponding to the second annular groove and is connected to 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 connected to 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 arranged corresponding to the third annular groove and is connected to 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 is connected to the third liquid passage groove; wherein the upper surface of the fixed valve member is a side of the fixed valve member close to the movable valve member; the fourth flow channel includes a fourth liquid passage hole that penetrates the fixed valve member along the direction of the first axis.

[0011] Optionally, the reversing valve also 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 and the fourth liquid hole are connected through the reversing flow channel; when the movable valve member is located at the second position, the first through hole is connected to the fourth liquid hole, and the third liquid hole is connected to the second liquid hole through the reversing flow channel.

[0012] Optionally, the drive unit is connected to the valve body by threads, and the reversing valve also 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 driving shaft, a first end of which is connected to the movable valve member, and a second end of which is connected to the driving unit; a limiting rod, which is sleeved on the driving shaft, and an extending direction of the limiting rod is perpendicular to the driving shaft, and the limiting rod abuts against a top cover of the connecting seat to limit the rotation range of the driving shaft; a spring, which is arranged between the limiting rod and the movable valve member to provide a thrust so that the lower surface of the movable valve member is in contact with 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 which are 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 passage groove, the second sealing groove is arranged between the second liquid passage groove and the third liquid passage groove, and the third sealing groove is arranged between the third liquid passage 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] Figure 1 It is a schematic structural diagram of the reversing valve provided in an embodiment of the present application.

[0018] Figure 2 yes Figure 1 sectional view of .

[0019] Figure 3 It is a schematic diagram of the local structure of the moving valve.

[0020] Figure 4 It is a schematic diagram of the local structure of the fixed valve component.

[0021] Figure 5 It is a schematic diagram of the communication status of multiple flow channel openings when the movable valve member is located at the first position.

[0022] Figure 6 It is a schematic diagram of the communication status of multiple flow channel openings when the movable valve member is located at the first position.

[0023] Figure 7 It is a schematic diagram of the communication status of multiple flow channel openings when the movable valve member is located at the second position.

[0024] Figure 8 It is a schematic diagram of the communication status of multiple flow channel openings 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 solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0026] It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present application and the accompanying drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device including 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 these processes, methods, products or devices.

[0027] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0028] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood 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] Figure 1 is a schematic structural diagram of a reversing valve provided in an embodiment of the present application, Figure 2 yes Figure 1 sectional view of .

[0031] like Figure 1 and Figure 2 As shown, the reversing valve 100 is provided with a plurality of external flow passages, and the plurality of external flow passages are used to allow fluid to flow in or out; the plurality of external flow passages may be, for example, Figure 1 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 are shown in the figure, and the plurality of flow channel openings are formed on the valve body 110 of the reversing valve 100; it should be noted here that, Figure 1 The four flow channel openings shown in are only examples. In this case, 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, and the flow channel switching assembly is used to provide different internal flow channels to connect different external flow channel ports when in different switching positions; Figure 1 The flow channel switching assembly 120 includes a movable valve component 121 and a fixed valve component 122 .

[0033] The movable valve member 121 is provided with a plurality of movable valve member flow channels, at least one of which penetrates the body of the movable valve member and connects to different external flow channel openings on both sides of the movable valve member. The fixed valve member 122 is provided with a plurality of fixed valve member flow channels. The movable valve member 121 abuts against the fixed valve member 122; and the movable valve member 121 can be driven to rotate around the first axis to achieve a switching position. In different switching positions, different movable valve member flow channels and fixed valve member flow channels form different internal flow channels to connect to different external interfaces.

[0034] Still Figure 1 Taking the reversing valve 100 shown in the figure 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 yes Figure 1 The local structural diagram of the movable valve member 121 in FIG. Figure 1-Figure 3 The multiple movable valve 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 penetrates the movable valve member 121 along the direction of the first axis.

[0037] The aforementioned first flow channel opening 111 is arranged on a side of the movable valve member 121 away from the fixed valve member 122, and the medium flowing into the interior of the reversing valve from the first flow channel opening 111 enters one of the multiple fixed valve member 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 member 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 member 121 during its flow process, so that the lower surface of the movable valve member 121 can fit tightly with the upper surface of the fixed valve member 122, thereby having a better sealing effect.

[0038] In some embodiments, continue to refer to Figure 3The plurality of moving valve member flow channels on the moving valve member 121 also include a reversing flow channel, which can be Figure 3 The groove 1212 shown in the figure has its openings located on the end surface of the movable valve member 121 close to the fixed valve member 122.

[0039] Alternatively, as an implementation, 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 The partial structural diagram of the fixed valve member 122 is shown in FIG. Figure 4 As shown, the fixed valve member 122 is provided with a second flow channel 1222 communicating with the second flow channel opening 112 , a third flow channel 1223 communicating with the third flow channel opening 113 , and a fourth flow channel 1224 communicating with the fourth flow channel opening 114 .

[0041] When the movable valve member is in the first position, Figure 5 and Figure 6 As shown, 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 opening 111 and the second flow channel opening 112 of the reversing valve are connected, and the third flow channel opening 113 and the fourth flow channel opening 114 are connected.

[0042] When the movable valve member is in the second position, Figure 7 and Figure 8 As shown, 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 of the reversing valve is connected to the third flow channel port 113, and the second flow channel port 112 is connected to the fourth flow channel port 114.

[0043] In some embodiments, see Figure 1 and Figure 2 The valve body 110 includes a first annular groove 115, a second annular groove 116 and a third annular groove 117 which are arranged in the valve cavity and arranged along the direction of the first axis.

[0044] As mentioned above, multiple flow channel openings in the reversing valve are all formed on the valve body 110, wherein the first flow channel opening 111 is arranged along the radial direction of the valve cavity and is connected to the first annular groove 115; the second flow channel opening 112 is arranged along the radial direction and is connected to the second annular groove 116; the third flow channel opening 113 is arranged along the radial direction and is connected to the third annular groove 117; the fourth flow channel 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] See also Figure 1 , Figure 2 as well as Figure 4 The second flow channel 1222 on the fixed valve member 122 includes a second liquid passage groove 1222A and a second liquid passage hole 1222B. The second liquid passage groove 1222A is arranged corresponding to the second annular groove 116 and is in communication with the second annular groove 116. The second liquid passage hole 1222B extends from the upper surface of the fixed valve member 122 along the direction of the first axis and is in communication with the second liquid passage groove 1222A. The medium flowing into the second liquid passage hole 1222B can flow out from the second flow channel opening 112 through the second liquid passage groove 1222A and the second annular groove 116.

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

[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] Re-read Figure 5-Figure 8 When the movable valve member 121 is located at the first position, the first through hole 1211 is connected with the second liquid hole 1222B, and the third liquid hole 1223B and the fourth liquid hole 1224A are connected through the reversing channel 1212; more specifically, the medium flowing in from the first channel opening 111 enters the first annular groove 115, flows into the second liquid hole 1222B after passing through the first through hole 1211, flows into the second annular groove 116 after passing through the second liquid groove 1222A, 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 flows into the third liquid groove 1223A after passing through the third annular groove 117, and then flows into the reversing channel 1212 through the third liquid hole 1223B, and the medium flowing out of the reversing channel 1212 flows out of the fourth channel opening 114 after passing through the fourth liquid hole 1224A.

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

[0051] In some embodiments, continue to refer to Figure 1 and Figure 2 The reversing valve further includes a connecting seat 140 and a valve core shaft assembly 150. The connecting seat 140 is arranged in the valve cavity. When the driving unit is screwed to the valve body through threads, one end of the connecting seat 140 abuts against the driving assembly, and 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 moving valve member 122 is arranged in the accommodating space.

[0052] The valve core shaft assembly 150 is inserted into the connection seat 140 and connected to the driving unit and the movable valve member 122 , so as 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 seat 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 seat 140, and the number of the at least one connection hole 141 can be, for example, 3 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 driving shaft 151 is connected to the movable valve member 121, and the second end is connected to the driving unit; the limiting rod 152 is sleeved on the driving shaft, and its extension direction is perpendicular to the driving shaft 151. The limiting rod 152 abuts against the top cover of the connecting seat 140 to limit the rotation range of the driving shaft 151; the spring 153 is arranged between the limiting rod 152 and the movable valve member 121 to provide thrust so that the lower surface of the movable valve member 121 fits against the upper surface of the fixed valve member 122; the limiting member 154 can be fixed on the connecting seat 140, and more specifically, the limiting member 154 extends downward from the top surface of the inner side of the connecting seat 140. When the driving shaft 151 and the limiting rod 152 rotate to a certain angle under the drive of the driving unit, the end of the limiting rod 152 contacts the limiting member 154, and the limiting member 154 prevents the movement of the limiting rod 152, thereby constraining the rotation range of the driving shaft 151 and the movable 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 here. 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, Figure 2 and Figure 4 As shown, the fixed valve member 122 further includes a first sealing groove 1225, a second sealing groove 1226 and a third sealing groove 1227 which are sequentially arranged along the direction of the first axis. The first sealing groove 1225 is arranged between the upper surface of the fixed valve member 122 and the second liquid-passing groove 1222A, the second sealing groove 1226 is arranged between the second liquid-passing groove 1222A and the third liquid-passing groove 1223A, and the third sealing groove 1227 is arranged between the third liquid-passing groove 1223A and the bottom 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 disposed in the first sealing groove 1225 , the second sealing groove 1226 and the third sealing groove 1227 for sealing 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0058] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. 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.

[0059] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] 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 and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “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”, and “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.

[0061] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the 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 a plurality of external flow passages for fluid inlet and outlet, and a flow passage switching assembly is also provided inside the reversing valve for providing different internal flow passages to connect different external flow passages at different switching positions, characterized in that: The flow channel switching component comprises: 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; 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, in 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 is a first through hole, and the first through hole has openings on both end surfaces of the movable valve member in the direction along the first axis; The external flow channel opening includes a first flow channel opening, 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 opening enters one of the plurality of 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 also 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 opening is communicated with the second flow channel opening, and the third flow channel opening is communicated with the fourth flow channel opening; 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 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 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 comprises a valve body, the valve body having a cylindrical valve cavity, the flow channel switching assembly being arranged in the valve cavity, the external flow channel opening being arranged on the valve body, and the valve body further comprising a first annular groove, a second annular groove and a third annular groove being 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 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 opening 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 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 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 with the third annular groove 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 side of the fixed valve member close to the movable valve member; The fourth flow channel includes a fourth liquid passage 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 through threads, and the reversing valve further includes: A connecting seat is arranged in the valve cavity, when the driving unit is screwed to 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, and an accommodation space is formed between the connecting seat and the fixed valve member, and the movable valve member is arranged in the accommodation space; The valve core shaft assembly is inserted into the connection seat and connected to the driving unit and the movable valve member, and 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 comprises: A driving shaft, a first end of which is connected to the movable valve member, and a second end of which is connected to the driving unit; A limit rod, sleeved on the driving shaft, the extension direction of the limit rod is perpendicular to the driving shaft, the limit rod abuts against the top cover of the connecting seat, and is used to limit the rotation range of the driving shaft; The spring is arranged 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 attached to the upper surface of the fixed valve member.

11. The reversing valve according to any one of claims 6 to 10, characterized in that: The fixed valve member further comprises a first sealing groove, a second sealing groove and a third sealing groove which are 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 passage groove, the second sealing groove is arranged between the second liquid passage groove and the third liquid passage groove, and the third sealing groove is arranged between the third liquid passage groove and the lower surface of the fixed valve member; The reversing valve further comprises: an annular sealing ring disposed in the first sealing groove, the second sealing groove and the third sealing groove, and used for sealing the gap between the fixed valve member and the valve seat.

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