Reversing valve and fluid circulation system

Abstract

The utility model provides a reversing valve. The reversing valve comprises a valve element and a valve body arranged outside the valve element in a sleeving mode. According to the reversing valve, fluid circulation is achieved through the first channel set and the second channel set in the valve element and the connector on the valve body, and the structure is simple. And the valve element and the valve body rotate relatively in the circumferential direction to achieve switching control over the fluid direction, and the switching difficulty is low. And the valve element and the valve body rotate in the circumferential direction for multiple times, flow direction switching can be conducted for multiple times, and switching efficiency is high. Due to the fact that the valve element and the valve body move relatively in the circumferential direction, the influence of translation changes of the valve element and the valve body on water inlet and outlet of an external fluid supply device and a working device is avoided. The utility model further provides a fluid circulation system which has the beneficial effects.

Description

Technical Field

[0001] The present application relates to the technical field of fluid control, and more specifically, to a reversing valve and a fluid circulation system. Background Art

[0002] In the battery thermal management system, the performance of the battery is sensitive to temperature, and the cooling medium needs to be able to achieve bidirectional flow in both forward and reverse directions to avoid the single-direction cooling medium from having too large a difference in the temperature of the nearby batteries at the inlet and outlet.

[0003] At present, it is still relatively complicated and difficult to switch the forward and reverse flow of fluid in the fluid circulation system. The reversing valve in the related art uses the axial movement of the valve core relative to the valve body to make the reversing valve connected or disconnected, and the structure is complicated. During the relative axial movement of the valve core and the valve body, the water inlet and outlet of the fluid supply device and the working device connected to the reversing valve are affected due to the translational change of the valve core and the valve body. In addition, the friction resistance and fluid resistance of the relative axial movement of the valve core and the valve body are large, and only one direction switch can be completed in each round trip cycle, which increases the difficulty of switching the reversing valve and affects the switching frequency of the reversing valve. Utility Model Content

[0004] The purpose of the embodiment of the present application is to provide a reversing valve with a simple structure. The flow direction is switched by relative circumferential rotation of the valve core and the valve body. The switching is convenient and efficient, and the problem of the influence of translation changes on the inlet and outlet water of an external fluid providing device and a working device in the related technology can be solved.

[0005] In a first aspect, an embodiment of the present application provides a reversing valve, comprising:

[0006] A valve core, wherein the valve core is provided with a first channel group and a second channel group that penetrate axially and are independent of each other;

[0007] A valve body is sleeved outside the valve core, and a plurality of interfaces are provided on the valve body; and

[0008] The control assembly is used to drive the valve core to rotate in the circumferential direction so that the first channel group and / or the second channel group are connected to or disconnected from the corresponding interface on the valve body.

[0009] In one embodiment, the reversing valve has a first communication state and a second communication state, and the control component drives the valve core to rotate in a circumferential direction to switch between the first communication state and the second communication state;

[0010] The first channel group includes at least a first channel and a second channel, and the second channel group includes at least a third channel and a fourth channel;

[0011] The plurality of interfaces include a first interface, a second interface, a third interface and a fourth interface, the first interface and the second interface are located on a first end surface of the valve body, and the third interface and the fourth interface are located on a second end surface of the valve body;

[0012] In the first connection state, the second channel group is disconnected from the interface, one of the first channel and the second channel is connected to the first interface and the third interface, and the other of the first channel and the second channel is connected to the second interface and the fourth interface;

[0013] In the second connection state, the first channel group is disconnected from the interface, one of the third channel and the fourth channel connects the first interface and the fourth interface, and the other of the third channel and the fourth channel connects the second interface and the third interface.

[0014] In one embodiment, the valve core has a first surface and a second surface opposite to each other in the axial direction, the through hole of the first channel on the first surface and the through hole of the first channel on the second surface are arranged correspondingly in the axial direction, and the through hole of the second channel on the first surface and the through hole of the second channel on the second surface are arranged correspondingly in the axial direction;

[0015] The through hole of the third channel on the first surface is axially corresponding to the through hole of the fourth channel on the second surface, and the through hole of the fourth channel on the first surface is axially corresponding to the through hole of the third channel on the second surface.

[0016] In one embodiment, the first channel includes a first curved segment, the first curved segment is bent to form a first avoidance zone, and the second channel includes a second curved segment, the second curved segment is bent to form a second avoidance zone;

[0017] The third channel includes a third curved segment extending through the first avoidance zone, and the fourth channel includes a fourth curved segment extending through the second avoidance zone.

[0018] In one embodiment, the first curved segment is bent toward the axis of the valve core, and the second curved segment is bent toward the axis of the valve core.

[0019] In one embodiment, the third curved line extends along a first spiral line, and a radius of the first spiral line is less than or equal to a distance from a through hole of the third channel on the first surface to a center of the first surface;

[0020] The fourth curved line extends along a second spiral line, and a radius of the second spiral line is less than or equal to a distance from a through hole of the fourth channel on the first surface to a center of the first surface.

[0021] In one embodiment, the first channel is a straight line segment extending axially, the second channel is a straight line segment extending axially, the third channel is a curved segment, the third channel is arranged around a side of the first channel away from the second channel, and the fourth channel is a curved segment, the fourth channel is arranged around a side of the second channel away from the first channel.

[0022] In one embodiment, the reversing valve also has a closed state, and the control component drives the valve core to rotate circumferentially to switch between the first connected state, the second connected state and the closed state;

[0023] In the closed state, the first channel group is disconnected from the interface, and the second channel group is disconnected from the interface.

[0024] In one embodiment, the reversing valve further comprises a retaining member, the valve body is provided with a avoidance hole, the retaining member is movably arranged in the avoidance hole, and the valve core is provided with a plurality of retaining grooves corresponding to the avoidance hole;

[0025] When the control assembly drives the valve core to rotate, the blocking member is spaced apart from the valve core, and after the valve core stops rotating, the blocking member extends along the avoidance hole to one of the blocking grooves.

[0026] In a second aspect, an embodiment of the present application provides a fluid circulation system, comprising the above-mentioned reversing valve, and also comprising a fluid providing device and a cooling device;

[0027] The outlet of the fluid supply device, the inlet of the fluid supply device, the first cooling interface of the cooling device, and the second cooling interface of the cooling device are respectively connected to the reversing valve.

[0028] The beneficial effect of the reversing valve provided in the embodiment of the present application is that: compared with the related art, the reversing valve of the present application realizes the circulation of fluid through the first channel group, the second channel group in the valve core and the interface on the valve body, and has a simple structure. In addition, the valve core and the valve body rotate circumferentially relative to each other to realize the switching control of the fluid direction, and the switching difficulty is small. The valve core and the valve body rotate circumferentially multiple times to switch the flow direction multiple times, and the switching efficiency is high. Due to the relative circumferential movement of the valve core and the valve body, the influence of the translational changes of the valve core and the valve body on the inlet and outlet water of the external fluid providing device and the working device is avoided. The embodiment of the present application also provides a fluid circulation system with the above-mentioned beneficial effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A schematic diagram of the three-dimensional structure of a reversing valve provided in one embodiment of the present application;

[0031] Figure 2 A schematic diagram of the cross-sectional structure of a reversing valve provided in one embodiment of the present application;

[0032] Figure 3 A schematic diagram of the fluid flow direction of a reversing valve in a first connected state provided by an embodiment of the present application;

[0033] Figure 4 A schematic diagram of the fluid flow direction of the reversing valve in a second connected state provided by an embodiment of the present application;

[0034] Figure 5 A schematic diagram of the three-dimensional structure of a valve core in a reversing valve provided in an embodiment of the present application;

[0035] Figure 6 A schematic diagram of a top view of a valve core in a reversing valve provided in an embodiment of the present application;

[0036] Figure 7 A schematic diagram of the structure of a first channel group and a second channel group in a reversing valve provided in an embodiment of the present application;

[0037] Figure 8 A schematic cross-sectional structure diagram of a reversing valve provided in another embodiment of the present application;

[0038] Fig. 9 A schematic structural diagram of a fluid circulation system provided in yet another embodiment of the present application;

[0039] Among them, the reference numerals in the figure are:

[0040] 100. Fluid circulation system; 10. Reversing valve; 20. Fluid supply device; 30. Cooling device;

[0041] 11. valve core; 12. valve body; 13. control assembly; 14. positioning member; Z, axial direction; Q, circumferential direction; J1, first radial direction; J2, second radial direction; upper valve body 12A; lower valve body 12B;

[0042] P1, first surface; P2, second surface; TA, first channel group; TB, second channel group; T1, first channel; T2, second channel; T3, third channel; T4, fourth channel; T11, first connecting section; T12, first curved section; T13, second connecting section; T21, third connecting section; T22, second curved section; T23, fourth connecting section; T31, fifth connecting section; T32, third curved section; T33, sixth connecting section; T41, seventh connecting section; T42, fourth curved section; T43, eighth connecting section; B1, first avoidance area; B2, second avoidance area; C, positioning slot;

[0043] S1, first end surface; S2, second end surface; K, interface; K1, first interface; K2, second interface; K3, third interface; K4, fourth interface; H, avoidance hole;

[0044] I, rotating rod; M, control part; E, connecting part;

[0045] 21. Outlet of the fluid providing device; 22. Inlet of the fluid providing device; 31. First cooling interface; 32. Second cooling interface. DETAILED DESCRIPTION

[0046] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0047] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0048] It should be understood that the orientation or position relationship indicated by terms such as "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0049] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0050] Please also read Figures 1 to 7 The reversing valve 10 provided in one embodiment of the present application is now described. The reversing valve 10 includes a valve core 11, a valve body 12 sleeved outside the valve core 11, and a control component 13. Figure 1 and Figure 2 As shown. The valve core 11 is provided with a first channel group TA and a second channel group TB that penetrate in the axial direction Z and are independent of each other. The valve body 12 is provided with a plurality of interfaces K. The control component 13 is used to drive the valve core 11 to rotate along the circumferential direction Q so that the first channel group TA and / or the second channel group TB are connected or disconnected with the corresponding interfaces K on the valve body 12.

[0051] The reversing valve 10 of the present application realizes the circulation of fluid through the first channel group TA, the second channel group TB in the valve core 11 and the interface K on the valve body 12, and has a simple structure. In addition, the valve core 11 and the valve body 12 rotate relative to the circumferential direction Q to realize the switching control of the fluid direction, and the switching difficulty is small. The valve core 11 and the valve body 12 rotate in the circumferential direction Q multiple times to switch the flow direction multiple times, and the switching efficiency is high. Since the valve core 11 and the valve body 12 move relative to the circumferential direction Q, the translation change of the valve core 11 and the valve body 12 is avoided to affect the inlet and outlet water of the external fluid providing device and the working device.

[0052] Specifically, the reversing valve 10 has a first communication state and a second communication state. The control component 13 drives the valve core 11 to rotate along the circumferential direction Q to switch between the first communication state and the second communication state.

[0053] The first channel group TA includes at least a first channel T1 and a second channel T2. The second channel group TB includes at least a third channel T3 and a fourth channel T4. Figure 2 As shown. Inside the valve core 11, the first channel T1, the second channel T2, the third channel T3 and the fourth channel T4 are independently arranged and not connected to each other. The multiple interfaces K include the first interface K1, the second interface K2, the third interface K3 and the fourth interface K4. The valve body 12 has a first end face S1 and a second end face S2 opposite to each other. The first interface K1 and the second interface K2 are located on the first end face S1 of the valve body 12, and the third interface K3 and the fourth interface K4 are located on the second end face S2 of the valve body 12.

[0054] In this embodiment, when the reversing valve 10 is initially in the second connection state, the valve core 11 rotates an odd number of 90 degrees along the circumferential direction Q to switch to the first connection state; the valve core 11 rotates an even number of 90 degrees along the circumferential direction Q to switch to the second connection state. Optionally, the valve core 11 rotates in the clockwise circumferential direction Q or in the counterclockwise circumferential direction Q. In this embodiment, the clockwise circumferential direction Q rotation is taken as an example for description.

[0055] In the first connection state, the second channel group TB is disconnected from the interface K; one of the first channel T1 and the second channel T2 of the first channel group TA connects the first interface K1 and the third interface K3, and the other of the first channel T1 and the second channel T2 connects the second interface K2 and the fourth interface K4.

[0056] In the second connection state, the first channel group TA is disconnected from the interface K; one of the third channel T3 and the fourth channel T4 of the first channel group TA connects the first interface K1 and the fourth interface K4, and the other of the third channel T3 and the fourth channel T4 connects the second interface K2 and the third interface K3.

[0057] like Figure 3 As shown, in the first connected state, the flow direction of the fluid is explained by taking the first channel T1 connecting the first interface K1 and the third interface K3, and the second channel T2 connecting the second interface K2 and the fourth interface K4 as an example. The external fluid supply device provides a fluid medium, and the fluid medium flows out from the outlet of the fluid supply device, and is connected to the reversing valve 10 from the first interface K1. The fluid medium flows through the first channel T1 and flows out of the reversing valve 10 from the third interface K3, and is connected to the external cooling device from the first cooling interface connected to the third interface K3. After the fluid medium completes the flow inside the cooling device, it flows out from the second cooling interface, and is connected to the reversing valve 10 from the fourth interface K4 connected to the second cooling interface. The fluid medium flows through the second channel T2 and flows out of the reversing valve 10 from the second interface K2, and then returns to the fluid supply device from the inlet of the fluid supply device, completing a positive cycle.

[0058] like Figure 4As shown, in the second connected state, the flow direction of the fluid is explained by taking the third channel T3 connecting the first interface K1 and the fourth interface K4, and the fourth channel T4 connecting the second interface K2 and the third interface K3 as an example. The external fluid supply device provides a fluid medium, and the fluid medium flows out from the outlet of the fluid supply device, and is connected to the reversing valve 10 from the first interface K1. The fluid medium flows through the third channel T3 and flows out of the reversing valve 10 from the fourth interface K4, and is connected to the external cooling device from the second cooling interface connected to the fourth interface K4. After the fluid medium completes the flow inside the cooling device, it flows out from the first cooling interface, and is connected to the reversing valve 10 from the third interface K3 connected to the first cooling interface. The fluid medium flows through the fourth channel T4 and flows out of the reversing valve 10 from the second interface K2, and then returns to the fluid supply device from the inlet of the fluid supply device, completing a reverse cycle.

[0059] In the first connected state, the fluid medium in the external cooling device flows in from the first cooling interface and flows out from the second cooling interface. In the second connected state, the fluid medium in the external cooling device flows in from the second cooling interface and flows out from the first cooling interface. It can be seen that the flow direction of the fluid medium in the external cooling device is opposite in the first connected state and the second connected state. By switching the flow direction of the fluid medium by the reversing valve 10, the cooling of the external cooling device is more uniform.

[0060] Optionally, in some other embodiments, the first channel group TA may also include 3, 4 or 5 channels, etc. As long as at least one channel in the first channel group TA is connected to the first interface K1 and the third interface K3, and at least another channel is connected to the second interface K2 and the fourth interface K4 in the first connected state. For example, the first channel group TA includes 4 channels, 1 channel is connected to the first interface K1 and the third interface K3, and the other 3 channels are connected to the second interface K2 and the fourth interface K4. Alternatively, 2 channels are connected to the first interface K1 and the third interface K3, and the other 2 channels are connected to the second interface K2 and the fourth interface K4. Similarly, the second channel group TB may also include 3, 4 or 5 channels, etc. As long as the flow direction of the fluid medium of the external cooling device is opposite in the first connected state and the second connected state.

[0061] In this embodiment, on the valve body 12 , the first port K1 and the second port K2 are arranged along the radial direction of the first end surface S1 , and the third port K3 and the fourth port K4 are arranged along the radial direction of the second end surface S2 .

[0062] Please also read Figures 5 to 7 The valve core 11 has a first surface P1 and a second surface P2 that are opposite to each other in the axial direction Z.

[0063] It should be noted that the shapes of the first end surface S1, the second end surface S2, the first surface P1 and the second surface P2 are all circular. The center of the first end surface S1 is the center of the circle of the first end surface S1, and the center of the second end surface S2 is the center of the circle of the second end surface S2. The center of the first surface P1 is the center of the circle of the first surface P1, and the center of the second surface P2 is the center of the circle of the second surface P2.

[0064] like Figure 5 and Figure 6 As shown, the through holes of the first channel T1 and the second channel T2 on the first plane P1 are arranged radially along the first plane P1. The through holes of the third channel T3 and the fourth channel T4 on the first plane P1 are arranged radially along the first plane P1.

[0065] The distance from the first interface K1 to the center of the first end surface S1, the distance from the second interface K2 to the center of the first end surface S1, the distance from the through hole of the first channel T1 on the first surface P1 to the center of the first surface P1, the distance from the through hole of the second channel T2 on the first surface P1 to the center of the first surface P1, the distance from the through hole of the third channel T3 on the first surface P1 to the center of the first surface P1, and the distance from the through hole of the fourth channel T4 on the first surface P1 to the center of the first surface P1 are all equal.

[0066] The through holes of the first channel T1 and the second channel T2 on the second plane P2 are arranged radially of the second plane P2. The through holes of the third channel T3 and the fourth channel T4 on the second plane P2 are arranged radially of the second plane P2.

[0067] The distance from the third interface K3 to the center of the second end surface S2, the distance from the fourth interface K4 to the center of the second end surface S2, the distance from the through hole of the first channel T1 on the second surface P2 to the center of the second surface P2, the distance from the through hole of the second channel T2 on the second surface P2 to the center of the second surface P2, the distance from the through hole of the third channel T3 on the second surface P2 to the center of the second surface P2, and the distance from the through hole of the fourth channel T4 on the second surface P2 to the center of the second surface P2 are all equal.

[0068] Optionally, the shape of each interface is circular, square or other shapes. The through holes of each channel on the first surface P1 and the second surface P2 are circular, square or other shapes. As long as the shapes of the through holes of each interface and each channel are consistent, it is convenient for the fluid to be connected and taken out when the interface and the through hole are opposite. In this embodiment, the shapes of the through holes of each interface and each channel are circular.

[0069] It should be noted that the distance from the first interface K1 to the center of the first end surface S1 refers to the distance from the center of the first interface K1 to the center of the first end surface S1. The distance from the through hole of the first channel T1 on the first surface P1 to the center of the first surface P1 refers to the distance from the center of the through hole of the first channel T1 on the first surface P1 to the center of the first surface P1. The through holes of other interfaces or other channels are similar and will not be described here.

[0070] In the present application, the valve body 12 is sleeved outside the valve core 11, and the axis of the valve body 12 is consistent with the axis of the valve core 11. The first end face S1 is located on the side of the first face P1 away from the second face P2, and the second end face S2 is located on the side of the second face P2 away from the first face P1. By setting the distance from the first interface K1 to the center of the first end face S1 to be equal to the distance from the through hole of the first channel T1 on the first face P1 to the center of the first face P1, the first interface K1 and the through hole of the first channel T1 on the first face P1 can be relatively connected, thereby realizing the connection between the first interface K1 and the first channel T1. The interface on the first end face S1 and the through holes of each channel on the first face P1 are also similarly connected, which will not be repeated here.

[0071] Since the first interface K1 and the second interface K2 are arranged radially along the first end surface S1, and the through hole of the first channel T1 and the through hole of the second channel T2 on the first surface P1 are arranged radially along the first surface P1, the interface of the first end surface S1 and the through hole of the first surface P1 are connected when the valve core 11 and the valve body 12 rotate in the circumferential direction Q, thereby realizing the switching between the first connection state and the second connection state. The interface of the second end surface S2 and the through hole of the second surface P2 are the same, which will not be described here.

[0072] In this embodiment, the radial direction of the through hole of the first channel T1 and the through hole of the first surface P1 of the second channel T2 is called the first radial direction J1, and the radial direction of the through hole of the third channel T3 and the through hole of the first surface P1 of the fourth channel T4 is called the second radial direction J2. Figure 6 As shown, the first radial direction J1 is perpendicular to the second radial direction J2, so the reversing valve 10 can be switched from the first connecting state to the second connecting state by rotating the valve core 11 by 90° along the circumferential direction Q.

[0073] Optionally, in some other embodiments, the angle formed by the first radial direction J1 and the second radial direction J2 is 25° to 65°, specifically 30°, 45° or 60°, etc. Accordingly, the reversing valve 10 switches from the first connection state to the second connection state by rotating the valve core 11 along the circumferential direction Q by 30°, 45° or 60°.

[0074] In this embodiment, when the initial state is in the second connection state, the valve core 11 rotates the first 90° along the circumferential direction Q, the reversing valve 10 switches to the first connection state, the first channel T1 connects the first interface K1 and the third interface K3, and the second channel T2 connects the second interface K2 and the fourth interface K4. The valve core 11 continues to rotate the second 90° along the circumferential direction Q, the reversing valve 10 switches to the second connection state, the third channel T3 connects the first interface K1 and the fourth interface K4, and the fourth channel T4 connects the second interface K2 and the third interface K3. The valve core 11 continues to rotate the third 90° along the axial direction Z, the reversing valve 10 switches to the first connection state, the second channel T2 connects the first interface K1 and the third interface K3, and the first channel T1 connects the second interface K2 and the fourth interface K4. The valve core 11 continues to rotate the fourth 90° along the circumferential direction Q, the reversing valve 10 switches to the second connection state, the fourth channel T4 connects the first interface K1 and the fourth interface K4, the third channel T3 connects the second interface K2 and the third interface K3... and so on.

[0075] Optionally, the reversing valve 10 also has a closed state. The control component 13 drives the valve core 11 to rotate along the circumferential direction Q until the first interface K1 and the third interface K3 are blocked, and the second interface K2 and the fourth interface K4 are blocked, and the reversing valve 10 is closed. In the closed state, the valve core 11 blocks the first interface K1 and the third interface K3, and the valve core 11 blocks the second interface K2 and the fourth interface K4. That is, the first channel group TA is disconnected from the interface K, and the second channel group TB is disconnected from the interface K. In this embodiment, when the initial state is in the second connected state, the valve core 11 rotates 30° to 60° along the circumferential direction Q, and the reversing valve 10 switches to the closed state. When the initial state is in the first connected state, the valve core 11 rotates 30° to 60° along the circumferential direction Q, and the reversing valve 10 switches to the closed state. Optionally, the valve core 11 rotates 30°, 40°, 45°, 50° or 60° along the axial direction Z.

[0076] The through holes of the first channel T1 on the first plane P1 and the through holes of the first channel T1 on the second plane P2 are arranged correspondingly in the axial direction Z, and the through holes of the second channel T2 on the first plane P1 and the through holes of the second channel T2 on the second plane P2 are arranged correspondingly in the axial direction Z.

[0077] The through hole of the third channel T3 on the first plane P1 and the through hole of the fourth channel T4 on the second plane P2 are arranged correspondingly in the axial direction Z, and the through hole of the fourth channel T4 on the first plane P1 and the through hole of the third channel T3 on the second plane P2 are arranged correspondingly in the axial direction Z.

[0078] Since the through-hole positions of the first channel T1 and the second channel T2 on the first surface P1 correspond to the through-hole positions of the first channel T1 and the second channel T2 on the second surface P2, respectively, the through-hole positions of the third channel T3 and the fourth channel T4 on the first surface P1 and the through-hole positions of the third channel T3 and the fourth channel T4 on the second surface P2 are arranged alternately, the external working device of the reversing valve 10 can achieve reverse flow of fluid in the first connected state and the second connected state, such as Figure 5 shown.

[0079] Specifically, in this embodiment, the through hole of the first channel T1 on the first plane P1 overlaps with the through hole of the first channel T1 on the second plane P2 in the axial direction Z, and the through hole of the second channel T2 on the first plane P1 overlaps with the through hole of the second channel T2 on the second plane P2 in the axial direction Z.

[0080] The through hole of the third channel T3 on the first plane P1 overlaps with the through hole of the fourth channel T4 on the second plane P2 in the axial direction Z, and the through hole of the fourth channel T4 on the first plane P1 overlaps with the through hole of the third channel T3 on the second plane P2 in the axial direction Z.

[0081] like Figure 5 and Figure 7 As shown, the first channel T1 includes a first connecting segment T11, a first curved segment T12 and a second connecting segment T13 connected in sequence. The first connecting segment T11 forms a through hole on the first surface P1, and the second connecting segment T13 forms a through hole on the second surface P2.

[0082] The second channel T2 includes a third connecting segment T21, a second curved segment T22 and a fourth connecting segment T23. The third connecting segment T21 forms a through hole on the first surface P1, and the fourth connecting segment T23 forms a through hole on the second surface P2.

[0083] The third channel T3 includes a fifth connecting segment T31, a third curved segment T32 and a sixth connecting segment T33 connected in sequence. The fifth connecting segment T31 forms a through hole on the first plane P1, and the sixth connecting segment T33 forms a through hole on the second plane P2.

[0084] The fourth channel T4 includes a seventh connecting segment T41, a third curved segment T32 and an eighth connecting segment T43 which are connected in sequence. The seventh connecting segment T41 forms a through hole on the first plane P1, and the eighth connecting segment T43 forms a through hole on the second plane P2.

[0085] Optionally, the connection points of the first connection section T11, the first curved section T12, and the second connection section T13 are all rounded, so that the flow resistance of the fluid is small and the flow is smoother. The connection points of the second channel T2, the third channel T3, and the fourth channel T4 are also rounded.

[0086] Among them, Figure 7As shown, the first curved segment T12 is bent to form a first avoidance zone B1. The third curved segment T32 extends and passes through the first avoidance zone B1. The second curved segment T22 is bent to form a second avoidance zone B2. The fourth curved segment T42 extends and passes through the second avoidance zone B2.

[0087] Since the third channel T3 and the fourth channel T4 are arranged crosswise inside the valve core 11, the first curved segment T12 of the first channel T1 is bent to form a first avoidance area B1 to avoid the third channel T3, and the second curved segment T22 of the second channel T2 is bent to form a second avoidance area B2 to avoid the fourth channel T4, the space inside the valve core 11 can be fully utilized to avoid the third channel T3 and the first channel T1 from intersecting, and avoid the fourth channel T4 and the second channel T2 from intersecting. It should be noted that in Figure 7 The fifth connecting segment T31 is blocked by the seventh connecting segment T41 and is not displayed, and the eighth connecting segment T43 is blocked by the sixth connecting segment T33 and is not displayed.

[0088] Optionally, the first curved segment T12 bends toward the axis of the valve core 11, and the second curved segment T22 bends toward the axis of the valve core 11, so that the first channel T1 and the second channel T2 can fully utilize the space inside the valve core 11, so that the first channel T1, the second channel T2, the third channel T3 and the fourth channel T4 are arranged compactly, thereby reducing the total volume of the reversing valve 10.

[0089] In this embodiment, if Figure 7 , the first connecting segment T11, the second connecting segment T13, the third connecting segment T21, the fourth connecting segment T23, the fifth connecting segment T31, the sixth connecting segment T33, the seventh connecting segment T41, and the eighth connecting segment T43 are all straight line segments. The first curved segment T12 and the second curved segment T22 are semicircular arc segments. The radius of the first curved segment T12 is smaller than the distance from the center of the through hole of the first channel T1 on the first surface P1 to the center of the first surface P1. The radius of the second curved segment T22 is smaller than the distance from the center of the through hole of the second channel T2 on the first surface P1 to the center of the first surface P1. Therefore, the protruding direction of the first curved segment T12 and the protruding direction of the second curved segment T22 are opposite to each other and will not be connected.

[0090] Optionally, in some other embodiments, the first curved segment T12 bends along the axis of the valve core 11 toward the circumference of the valve core 11, and the second curved segment T22 bends along the axis of the valve core 11 toward the circumference of the valve core 11, so that the first curved segment T12 avoids the third curved segment T32, and the second curved segment T22 avoids the fourth curved segment T42. The protruding direction of the first curved segment T12 is opposite to and divergent from the protruding direction of the second curved segment T22.

[0091] Optionally, the maximum distance between the third curved segment T32 and the central axis of the valve core 11 is less than or equal to the distance between the through hole of the third channel T3 on the first surface P1 and the center of the first surface P1. The maximum distance between the fourth curved segment T42 and the central axis of the valve core 11 is less than or equal to the distance between the through hole of the fourth channel T4 on the first surface P1 and the center of the first surface P1.

[0092] Further, the third curve segment T32 extends along the first spiral line, that is, the central axis of the third curve segment T32 is the first spiral line. The radius of the first spiral line is less than or equal to the distance from the center of the through hole of the third channel T3 on the first surface P1 to the center of the first surface P1.

[0093] The fourth curve segment T42 extends along the second helix, that is, the central axis of the fourth curve segment T42 is the second helix. The radius of the second helix is ​​less than or equal to the distance from the center of the through hole of the fourth channel T4 on the first plane P1 to the center of the first plane P1.

[0094] Furthermore, since the first curved segment T12 and the second curved segment T22 are curved segments convexly bent toward the axis, the space inside the valve core 11 is fully utilized, and the first channel T1, the second channel T2, the third channel T3 and the fourth channel T4 are compactly arranged. The radius of the valve core 11 only needs to be larger than the sum of the radius of the fourth channel T4 and the distance from the through hole of the fourth channel T4 on the first surface P1 to the center of the first surface P1, and the volume of the reversing valve 10 can be set to be smaller.

[0095] In the present embodiment, the reversing valve 10 is used to convert the flow direction of the coolant in the liquid cooling device in the battery pack. The battery pack is installed in the vehicle for use. In order to adapt to the size of the vehicle, the diameter of the valve core 11 is 2 to 10 centimeters (cm) and the height is 2 to 10 cm. Optionally, the diameter of the valve core 11 is 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm or 10 cm, etc. The height of the valve core 11 is 2 cm, 3 cm, 4 cm, 5 cm, 6 cm, 7 cm, 8 cm or 10 cm, etc. Specifically, the diameter of the valve core 11 of the present embodiment is 10 cm and the height is 8 cm. That is, the radius of the valve core 11 is 5 cm.

[0096] It is understandable that the larger the diameters of the first channel T1, the second channel T2, the third channel T3 and the fourth channel T4, the larger the volume of the channel, and the smaller the flow resistance of the fluid. At the same time, the more compact the arrangement inside the valve core 11, the more the internal space is fully utilized, and the total weight of the reversing valve 10 is reduced. However, the larger the diameters of the first channel T1, the second channel T2, the third channel T3 and the fourth channel T4, the thinner the channel wall inside the valve core 11, which is easily damaged by the fluid impact force, and the structural stability decreases. Optionally, the diameters of the first channel T1, the second channel T2, the third channel T3 and the fourth channel T4 are 1 / 10 of the diameter of the valve core 11, which is 1 cm in this embodiment.

[0097] like Figure 6 and Figure 7 As shown, the projections of the first channel T1, the second channel T2, the third channel T3 and the fourth channel T4 on the first surface P1 are within the range of a circular ring. The through hole of the first channel T1 on the first surface P1, the through hole of the second channel T2 on the first surface P1, the through hole of the third channel T3 on the first surface P1 and the through hole of the fourth channel T4 on the first surface P1 are also within the range of a circular ring. The through hole of the first channel T1 on the second surface P2, the through hole of the second channel T2 on the second surface P2, the through hole of the third channel T3 on the second surface P2 and the through hole of the fourth channel T4 on the second surface P2 are also within the range of a circular ring. In this embodiment, the through hole of the first channel T1 on the first surface P1, the through hole of the second channel T2 on the first surface P1, the through hole of the third channel T3 on the first surface P1 and the through hole of the fourth channel T4 on the first surface P1 are all tangent to the inner circle and the outer circle of the circular ring. The radius of the first spiral line is equal to the distance from the center of the through hole of the third channel T3 on the first surface P1 to the center of the first surface P1. The radius of the second helix is ​​equal to the distance from the center of the through hole of the fourth channel T4 on the first surface P1 to the center of the first surface P1. The distance from the center of each through hole to the center of the first surface P1, the radius of the first helix, and the radius of the second helix are all R1, and R1 is 3.5 cm. The radius of the first curve segment T12 and the radius of the second curve segment T22 are R2, and R2 is 2 cm. The small radius r1 of the ring is 3 cm, and the large radius r2 is 4 cm.

[0098] Since the radius of the valve core 11 is 5 cm, the channel wall of the third curved segment T32 and the fourth curved segment T42 is at least 1 cm thick. The interval between the first curved segment T12 and the third curved segment T32 is at least 1 cm, and the channel wall between the second curved segment T22 and the fourth curved segment T42 is also at least 1 cm thick, thereby ensuring the structural stability of the valve core 11 while fully utilizing the internal space of the valve core 11.

[0099] The valve core 11 is integrally formed by a casting process. Specifically, the raw material for preparing the valve core 11 is cast into a mold and cooled to form. Optionally, the raw material of the valve core 11 can be one of ceramics, alloys or plastics.

[0100] Optionally, the reversing valve 10 further includes a control component 13, such as Figure 2 . The control component 13 includes a rotating rod I and a control part M. The control part M is arranged outside the valve body 12, and is connected to the valve core 11 through the rotating rod I. An opening is opened on the valve body 12 to avoid the rotating rod I, and the rotating rod I is arranged in the opening. In this embodiment, the control part M is a motor. When the initial state is in the second connected state or the first connected state, the valve core 11 is driven by the motor to rotate 45° along the circumferential direction Q, and the reversing valve 10 is switched to a closed state. Optionally, in some other embodiments, the control component 13 may also be other electronic control devices. By setting an electronically controlled control component 13, the valve core 11 can be accurately driven to rotate 45°, 90°, 135° or 180°, etc.

[0101] See also Figure 8 , Figure 8 FIG. 1 is a schematic diagram of the structure of a reversing valve 10 provided in another embodiment of the present application. Figure 1 The structures of the embodiments are roughly the same. Figure 1 The differences between the embodiments are: the shapes of the first channel T1 , the second channel T2 , the third channel T3 and the fourth channel T4 and the arrangement of the blocking member 14 .

[0102] like Figure 8 As shown, in this embodiment, the first channel T1 is a straight line segment extending along the axial direction Z, and the second channel T2 is a straight line segment extending along the axial direction Z. The third channel T3 is a curved line segment, and the third channel T3 is arranged around the side of the first channel T1 away from the second channel T2. The fourth channel T4 is a curved line segment, and the fourth channel T4 is arranged around the side of the second channel T2 away from the first channel T1.

[0103] The first channel T1 and the second channel T2 are both straight segments, which are easier to manufacture. On this basis, the third channel T3 and the fourth channel T4 are arranged in a winding manner to achieve a cross arrangement.

[0104] Optionally, in some other embodiments, the third channel T3 is disposed between the first channel T1 and the second channel T2, and the fourth channel T4 is disposed between the third channel T3 and the second channel T2.

[0105] like Figure 8 As shown, the reversing valve 10 further includes a retaining member 14. The valve body 12 is provided with an avoidance hole H, and the retaining member 14 is movably disposed in the avoidance hole H. The valve core 11 is provided with a plurality of retaining grooves C corresponding to the avoidance hole H. Optionally, the avoidance hole H is provided on the second end surface S2, and a plurality of retaining grooves C are provided on the second surface P2.

[0106] When the control assembly 13 drives the valve core 11 to rotate, the blocking member 14 is spaced apart from the second surface P2 of the valve core 11 ; after the valve core 11 stops rotating, the blocking member 14 extends along the avoidance hole H to the blocking groove C.

[0107] It can be understood that after the reversing valve 10 is switched, the valve body 12 and the valve core 11 are fixed by the locking member 14 to prevent the valve body 12 and the valve core 11 from rotating relative to each other during the flow of the fluid and thus blocking the channel and affecting the flow of the fluid.

[0108] Optionally, the avoidance hole H can be provided on the first end surface S1 , and the retaining groove C can be provided on the first surface P1 . The avoidance hole H can be provided on the circumference of the valve body 12 , and the retaining groove C can be provided on the circumference of the valve core 11 .

[0109] Optionally, in the present embodiment, the valve body 12 includes an upper valve body 12A and a lower valve body 12B. The upper valve body 12A and the lower valve body 12B form a receiving cavity, and the valve core 11 is located in the receiving cavity. Lubricants such as vaseline and lubricating oil are coated in the receiving cavity, which can play a sealing role on the one hand, and a lubricating role on the other hand, so that the relative rotation of the valve core 11 and the valve body 12 is smoother. Connecting holes are provided on the upper valve body 12A and the lower valve body 12B, and a connecting member E is arranged in the connecting hole to fix the upper valve body 12A and the lower valve body 12B. In the present embodiment, the connecting member E is a screw.

[0110] Optionally, in some other embodiments, the upper valve body 12A and the lower valve body 12B are welded to be fixed.

[0111] Optionally, connectors are provided at the first interface K1 , the second interface K2 , the third interface K3 and the fourth interface K4 , so as to facilitate the connection of the valve body 12 with an external fluid supply device and a cooling device.

[0112] See also Fig. 9 , the embodiment of the present application also provides a fluid circulation system 100. The fluid circulation system 100 includes the above-mentioned reversing valve 10 and a fluid supply device 20 and a cooling device 30. The outlet 21 of the fluid supply device 20, the inlet 22 of the fluid supply device 20, the first cooling interface 31 of the cooling device 30, and the second cooling interface 32 of the cooling device 30 are respectively connected to the reversing valve 10. Specifically, the outlet 21 of the fluid supply device 20 is connected to the first interface K1, and the inlet is connected to the second interface K2. The first cooling interface 31 of the cooling device 30 is connected to the third interface K3, and the second cooling interface 32 is connected to the fourth interface K4.

[0113] In the first connected state, the flow direction of the fluid is explained by taking the first channel T1 connecting the first interface K1 and the third interface K3, and the second channel T2 connecting the second interface K2 and the fourth interface K4 as an example. The fluid providing device 20 provides a fluid medium, the fluid medium flows out from the outlet 21 of the fluid providing device 20, and is connected to the reversing valve 10 from the first interface K1. The fluid medium flows through the first channel T1 and flows out of the reversing valve 10 from the third interface K3, and is connected to the external cooling device 30 from the first cooling interface 31 connected to the third interface K3. After the fluid medium completes the flow inside the cooling device 30, it flows out from the second cooling interface 32, and is connected to the reversing valve 10 from the fourth interface K4 connected to the second cooling interface 32. The fluid medium flows through the second channel T2 and flows out of the reversing valve 10 from the second interface K2, and then returns to the fluid providing device 20 from the inlet 22 of the fluid providing device 20, completing a positive cycle.

[0114] In the second connection state, the flow direction of the fluid is explained by taking the third channel T3 connecting the first interface K1 and the fourth interface K4, and the fourth channel T4 connecting the second interface K2 and the third interface K3 as an example. The fluid providing device 20 provides a fluid medium, the fluid medium flows out from the outlet 21 of the fluid providing device 20, and is connected to the reversing valve 10 from the first interface K1. The fluid medium flows through the third channel T3 and flows out of the reversing valve 10 from the fourth interface K4, and is connected to the external cooling device 30 from the second cooling interface 32 connected to the fourth interface K4. After the fluid medium completes the flow inside the cooling device 30, it flows out from the first cooling interface 31, and is connected to the reversing valve 10 from the third interface K3 connected to the first cooling interface 31. The fluid medium flows through the fourth channel T4 and flows out of the reversing valve 10 from the second interface K2, and then returns to the fluid providing device 20 from the inlet 22 of the fluid providing device 20, completing a reverse cycle.

[0115] It can be seen that the flow direction of the fluid medium of the cooling device 30 is opposite in the first connection state and the second connection state. By switching the flow direction of the fluid medium through the reversing valve 10, the cooling of the cooling device 30 is more uniform.

[0116] In the present application, the cooling device 30 is a liquid cooling device in the battery pack. The liquid cooling device cools the batteries in the battery pack to prevent problems such as explosion due to excessive battery temperature. The liquid cooling device is electrically connected to the battery thermal management system (BMS) in the battery pack. The BMS controls the switching of the reversing valve 10 according to the received temperature signal, changes the flow direction of the cooling medium in the cooling device 30, so that the battery cooling conditions near the first cooling interface 31 and the second cooling interface 32 are close, and the temperature difference is not too large.

[0117] Optionally, in some other embodiments, the cooling device 30 of the fluid circulation system 100 is replaced by other heat exchange systems, such as a heating device, etc. Optionally, the fluid circulation system 100 is a fluid circulation system 100 of a central air conditioner, and the cooling device 30 is replaced by a gas circulation device.

[0118] The above is a description of the reversing valve 10 and the fluid circulation system 100 provided in the embodiment of the present application.

[0119] The reversing valve provided in the embodiment of the present application realizes the circulation of fluid through the first channel group, the second channel group in the valve core and the interface on the valve body, and has a simple structure. In addition, the valve core and the valve body rotate relative to each other in the circumferential direction to realize the switching control of the fluid direction, and the switching difficulty is small. The valve core and the valve body rotate circumferentially multiple times to switch the flow direction multiple times, and the switching efficiency is high. Due to the relative circumferential movement of the valve core and the valve body, the translational changes of the valve core and the valve body are prevented from affecting the inlet and outlet water of the external fluid providing device and the working device. The present application also provides a fluid circulation system with the above-mentioned beneficial effects.

[0120] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A reversing valve, characterized in that: include: A valve core, wherein the valve core is provided with a first channel group and a second channel group that penetrate axially and are independent of each other; A valve body is sleeved outside the valve core, and a plurality of interfaces are opened on the valve body; as well as The control assembly is used to drive the valve core to rotate in the circumferential direction so that the first channel group and / or the second channel group are connected to or disconnected from the corresponding interface on the valve body.

2. The reversing valve according to claim 1, characterized in that: The reversing valve has a first communication state and a second communication state, and the control component drives the valve core to rotate in the circumferential direction to switch between the first communication state and the second communication state; The first channel group includes at least a first channel and a second channel, and the second channel group includes at least a third channel and a fourth channel; The plurality of interfaces include a first interface, a second interface, a third interface and a fourth interface, the first interface and the second interface are located on a first end surface of the valve body, and the third interface and the fourth interface are located on a second end surface of the valve body; In the first connection state, the second channel group is disconnected from the interface, one of the first channel and the second channel is connected to the first interface and the third interface, and the other of the first channel and the second channel is connected to the second interface and the fourth interface; In the second connection state, the first channel group is disconnected from the interface, one of the third channel and the fourth channel connects the first interface and the fourth interface, and the other of the third channel and the fourth channel connects the second interface and the third interface.

3. The reversing valve according to claim 2, characterized in that: The valve core has a first surface and a second surface opposite to each other in the axial direction; The through hole of the first channel on the first surface is arranged correspondingly to the through hole of the first channel on the second surface in the axial direction, and the through hole of the second channel on the first surface is arranged correspondingly to the through hole of the second channel on the second surface in the axial direction; The through hole of the third channel on the first surface is axially corresponding to the through hole of the fourth channel on the second surface, and the through hole of the fourth channel on the first surface is axially corresponding to the through hole of the third channel on the second surface.

4. The reversing valve according to claim 3, characterized in that: The first channel includes a first curved segment, the first curved segment is bent to form a first avoidance zone, and the second channel includes a second curved segment, the second curved segment is bent to form a second avoidance zone; The third channel includes a third curved segment extending through the first avoidance zone, and the fourth channel includes a fourth curved segment extending through the second avoidance zone.

5. The reversing valve according to claim 4, characterized in that: The first curved segment is bent toward the axis of the valve core, and the second curved segment is bent toward the axis of the valve core.

6. The reversing valve according to claim 5, characterized in that: The third curved line extends along a first spiral line, and the radius of the first spiral line is less than or equal to the distance from the center of the through hole of the third channel on the first surface to the center of the first surface; The fourth curved line extends along a second spiral line, and a radius of the second spiral line is less than or equal to a distance from a center of a through hole of the fourth channel on the first surface to a center of the first surface.

7. The reversing valve according to claim 3, characterized in that: The first channel is a straight segment extending axially, the second channel is a straight segment extending axially, the third channel is a curved segment, and the third channel is arranged around a side of the first channel away from the second channel, and the fourth channel is a curved segment, and the fourth channel is arranged around a side of the second channel away from the first channel.

8. The reversing valve according to any one of claims 2 to 7, characterized in that: The reversing valve also has a closed state, and the control component drives the valve core to rotate in the circumferential direction to switch between the first connected state, the second connected state and the closed state; In the closed state, the first channel group is disconnected from the interface, and the second channel group is disconnected from the interface.

9. The reversing valve according to any one of claims 2 to 7, characterized in that: The reversing valve further comprises a retaining member, the valve body is provided with an avoidance hole, the retaining member is movably arranged in the avoidance hole, and the valve core is provided with a plurality of retaining grooves corresponding to the avoidance hole; When the control assembly drives the valve core to rotate, the blocking member is spaced apart from the valve core, and after the valve core stops rotating, the blocking member extends along the avoidance hole to one of the blocking grooves.

10. A fluid circulation system, characterized in that: The reversing valve comprises the reversing valve as claimed in any one of claims 1 to 9, and further comprises a fluid supply device and a cooling device; The outlet of the fluid supply device, the inlet of the fluid supply device, the first cooling interface of the cooling device, and the second cooling interface of the cooling device are respectively connected to the reversing valve.

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