Valve device

Abstract

A valve device comprises a valve body assembly and a valve element assembly, and the valve element assembly can rotate relative to the valve body assembly. The valve element assembly comprises a shaft part and a main body part, the shaft part is fixedly connected with the main body part, and at least part of the shaft part is located on one side of the main body part in the axial direction of the valve device; the valve element is provided with a first channel and a second channel which are spaced by a certain distance, the shaft component is provided with a third channel, the first channel is communicated with the third channel, and the shaft component is spaced by a certain distance from the second channel. A reference plane is defined, the axial direction of the valve device is perpendicular to the reference plane, in the axial direction of the valve device, at least part of the orthographic projection of the first channel on the reference plane is located in the orthographic projection of the shaft component on the reference plane, and at least part of the orthographic projection of the second channel on the reference plane is located in the orthographic projection of the shaft component on the reference plane. The first channel and the second channel in the main body component can be closer to each other in the radial direction of the valve device, so that the radial size of the main body component is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of fluid control, in particular to a valve device. Background Art

[0002] The valve device can be used in a thermal management system to control the opening or closing or reversing of a fluid channel, etc. The valve device includes a valve body, a valve core and a solid shaft. The solid shaft can penetrate the valve core axially to achieve the fixed axis of the valve core, but the solid shaft needs to occupy a part of the internal space of the valve core, especially the radial space. In order not to affect the flow rate and sealing performance of the valve core, the size of the valve core, especially the radial size, needs to be increased. Utility Model Content

[0003] An object of the present application is to provide a valve device capable of reducing the radial dimension of a valve core.

[0004] One embodiment of the present application provides a valve device, including a valve body assembly, the valve core assembly including a shaft component and a main body component, the shaft component is fixedly connected to the main body component, and along the axial direction of the valve device, at least part of the shaft component is located on one side of the main body component; the valve core has a first channel and a second channel, the first channel is separated from the second channel by a distance, the shaft component has a third channel, the first channel and the third channel are connected, and the shaft component is separated from the second channel by a distance; a reference plane is defined, the axial direction of the valve device is perpendicular to the reference plane, and along the axial direction of the valve device, the orthographic projection of the first channel on the reference plane is at least partially located within the orthographic projection of the shaft component on the reference plane, and the orthographic projection of the second channel on the reference plane is at least partially located within the orthographic projection of the shaft component on the reference plane.

[0005] In the valve device provided in the embodiment of the present application, at least a portion of the shaft component is located on one side of the main body component, the orthographic projection of the first channel on the reference plane is at least partially located within the orthographic projection of the shaft component on the reference plane, and the orthographic projection of the second channel on the reference plane is at least partially located within the orthographic projection of the shaft component on the reference plane, so that the first channel and the second channel in the main body component can be closer in the radial direction of the valve device, thereby reducing the radial size of the main body component. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] Figure 1 A schematic diagram of a three-dimensional structure of an embodiment of a valve device of the present application is shown;

[0007] Figure 2 Shows Figure 1 The valve device shown is a schematic structural diagram at an angle;

[0008] Figure 3 Shows Figure 3The cross-sectional structure diagram of the valve device shown along line AA;

[0009] Figure 4 Shows Figure 3 A schematic cross-sectional view of the valve core assembly of the valve device shown;

[0010] Figure 5 Shows Figure 4 The exploded structural diagram of the valve core assembly is shown;

[0011] Figure 6 Shows Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a valve body of the valve body assembly shown;

[0012] Figure 7 Shows Figure 2 The cross-sectional structure diagram of the valve device shown along line BB;

[0013] Figure 8 Shows Figure 7 A schematic cross-sectional view of the valve device in another working mode;

[0014] Fig. 9 Shows Figure 5 A schematic structural diagram of the main part of the valve core assembly shown in FIG. 1 is a schematic structural diagram of the main part of the valve core assembly shown in FIG. 1 from another angle;

[0015] Fig.10 A cross-sectional structural schematic diagram of another embodiment of the valve device of the present application is shown.

[0016] Reference numerals:

[0017] 100, valve device; 1, valve body assembly; 10, accommodating chamber; 101, sandwich chamber; 11, valve body; 12, first cover; 13, second cover; 14, first interface; 15, second interface; 16, third interface; 17, fourth interface; 18, fifth interface; 19, third cover; 20, valve core assembly; 2, main body; 21, peripheral part; 22, first channel; 221, channel; 23, second channel; 24, First opening; 27, groove; 28, first end; 201, second end; 29, third opening; 25, fourth opening; 26, fifth opening; 4, shaft member; 41, insertion portion; 42, base; 43, step portion; 44, third passage; 45, through hole; 46, second opening; 47, inclined wall; 48, sliding surface; 49, end face portion; 401, connecting port; 5, valve seat assembly; 6, drive assembly; 61, valve stem. DETAILED DESCRIPTION

[0018] The embodiments are described in detail below with reference to the accompanying drawings.

[0019] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. In this article, relational terms such as "first" and "second" are only used to distinguish one component with the same name from another, and do not necessarily require or imply that there is any such actual relationship or order between these components. It should be noted that the "limited connection" in this application includes snap-on connection, hinged connection, etc., and the "fixed connection" in this application includes threaded connection, welding, bonding, vulcanization fixation, riveting, insert injection molding, interference fit, etc.

[0020] like Figures 1 to 6 As shown, the valve device 100 includes a valve body assembly 1 and a valve core assembly 20. The valve body assembly 1 has a receiving cavity 10. At least part of the valve core assembly 20 is located in the receiving cavity 10. The valve core assembly 20 can rotate relative to the valve body assembly 1. Figures 3 to 6 As shown, the valve core assembly 20 includes a shaft component 4 and a main body component 2, the shaft component 4 is fixedly connected to the main body component 2, and along the axial direction of the valve device 100, at least part of the shaft component 4 is located on one side of the main body component 2; the main body component 2 has a first channel 22 and a second channel 23, the first channel 22 and the second channel 23 are separated by a distance, the shaft component 4 has a third channel 44, the first channel 22 is connected to the third channel 44, and the shaft component 4 is separated by a distance from the second channel 23. Define a reference plane, the axial direction of the valve device 100 is perpendicular to the reference plane, along the axial direction of the valve device 100, the orthographic projection of the first channel 22 on the reference plane is at least partially located within the orthographic projection of the shaft component 4 on the reference plane, and the orthographic projection of the second channel 23 on the reference plane is at least partially located within the orthographic projection of the shaft component 4 on the reference plane. Figure 4 An implementation of the reference plane is shown in FIG. Compared with the solution in which the shaft component 4 axially penetrates the main body component 2, the solution of the present application can make the first channel 22 and the second channel 23 in the main body component 2 closer in the radial direction of the valve device 100, thereby reducing the radial size of the main body component 2. In addition, the shaft component 4 and the main body component 2 are split structures, and the shaft component 4 is fixedly connected to one end of the main body component 2. Compared with the solution in which the shaft component 4 and the main body component 2 are integrated, it is convenient to process complex channels in the main body component 2.

[0021] Define the central axis of the valve core assembly 20. The central axis of the valve core assembly 20 is Figure 3 As shown by C1, the valve core assembly 20 can rotate around the central axis. The axial direction of the valve device 100 is defined as follows: the axial direction of the valve device 100 is parallel to the extension direction of the central axis of the valve core assembly 20. Figure 3 Indicated by H in the figure.

[0022] like Figures 3 to 6As shown, the shaft component 4 and the main body component 2 are separate structures, the main body component 2 includes a first end 28, and the main body component 2 has a groove 27. Along the axial direction of the valve device 100, the groove 27 is recessed in the first end 28 of the main body component 2 and extends to the second end 201 included in the main body component 2. The shaft component 4 includes an insertion portion 41, and the insertion portion 41 is located in the groove 27. In this embodiment, the side wall forming the groove 27 extends along the axial direction of the valve device 100, and the outer periphery of the insertion portion 41 is tightly matched with the side wall forming the groove 27, so that the main body component 2 and the shaft component 4 can be fixed more firmly. The shaft component 4 is welded and fixed to the first end 28 of the main body component 2, and the weld formed between the shaft component 4 and the main body component 2 surrounds the shaft component 4, so that the main body component 2 and the shaft component 4 are fixed more firmly. In other embodiments, the shaft component 4 is welded and fixed to the first end 28 of the main body component 2, and the outer periphery of the insertion portion 41 is tightly matched with the side wall forming the groove 27. Either one of them can be applied to the fixed connection between the shaft component 4 and the main body component 2.

[0023] like Figures 3 to 6 As shown, the first channel 22 has a first opening 24 at the bottom wall where the groove 27 is formed, and the first opening 24 is connected to the third channel 44. The shaft member 4 includes an end surface portion 49, and along the axial direction of the valve device 100, the end surface portion 49 faces the bottom wall, and the third channel 44 has a second opening 46 at the end surface portion 49, and the first opening 24 is opposite to at least a part of the second opening 46. The first channel 22 includes a hole 221, and the hole 221 is adjacent to the first opening 24. The extended surface of the hole wall forming the hole 221 passes through the second opening 46 and does not interfere with the second opening 46, as shown in FIG. Figure 4 The dotted line portion in the figure shows the extended surface of the hole wall forming the hole channel 221, so that the fluid flowing out of the first opening 24 can enter the second opening 46 more smoothly, thereby reducing the flow resistance at the connection between the third channel 44 and the first channel 22, and further reducing the flow resistance of the valve device 100.

[0024] like Figure 4As shown, the third channel 44 extends along the axial direction of the valve device 100 as a whole, the shaft component 4 is cylindrical, and the wall forming the third channel 44 includes an inclined wall 47, which is adjacent to the second opening 46. The orthographic projection of the inclined wall 47 on the reference plane is annular, and the radial dimension of the inclined wall 47 increases in the direction toward the second opening 46. The extended surface of the hole wall forming the channel 221 does not interfere with the inclined wall 47, so that the fluid flowing out of the first opening 24 can enter the third channel 44 more smoothly, thereby reducing the flow resistance at the connection between the third channel 44 and the first channel 22. In addition, the provision of the inclined wall 47 can reduce the radial thickness of the shaft component 4 and reduce the weight. The shaft component 4 includes a step portion 43, which is located at the radial outer periphery of the insertion portion 41. Along the axial direction of the valve device 100, the step portion 43 is away from the second opening 46 relative to the insertion portion 41, and the step portion 43 faces the first end portion 28. The step portion 43 is welded and fixed or in contact with the first end portion 28. When the valve core assembly 20 is assembled, the step portion 43 can limit the depth of the shaft component 4 inserted into the groove 27 and determine the relative position of the shaft component 4 and the main body component 2 .

[0025] like Figure 4 , Figure 5 As shown, the shaft component 4 has a through hole 45, one end of the through hole 45 is connected to the third channel 44, and the other end of the through hole 45 has a communication port 401 on the outer peripheral side of the shaft component 4. The shaft component 4 and the valve body assembly 1 are slidably matched, and the part of the shaft component 4 and the valve body assembly 1 that are slidably matched is defined as the sliding surface 48. Along the axial direction of the valve device 100, at least part of the communication port 401 is located between the main body component 2 and the sliding surface 48. It should be noted that the accommodating chamber 10 includes an interlayer chamber 101, and the interlayer chamber 101 is defined as being surrounded by the outer peripheral portion 21 of the valve core assembly 20 and the wall forming the accommodating chamber 10. Through the through hole 45, the third channel 44 can be connected to the interlayer chamber 101, so that when the fluid pressure in the third channel 44 is greater than that in the interlayer chamber 101, the fluid pressures of the third channel 44 and the interlayer chamber 101 can be balanced more quickly, thereby reducing the occurrence of "pressure holding". For example, the pressure in the third channel 44 is greater than the pressure in the interlayer cavity 101. If the through hole 45 is not provided, the valve core assembly 20 will be pushed toward the driving assembly 6 by the fluid pressure, and the shaft component 4 will also expand in the radial direction of the valve device 100, thereby increasing the friction between the shaft component 4 and the valve body assembly 1. Specifically, the through hole 45 extends in the radial direction of the valve device 100, and the shaft component 4 has a plurality of through holes 45.

[0026] like Figure 4 , Figure 5 , Fig. 9As shown, along the axial direction of the valve device 100, the orthographic projection of the first channel 22 on the reference plane and the orthographic projection of the second channel 23 on the reference plane at least partially overlap, so that the radial dimension of the main body part 2 can be further reduced while ensuring the diameters of the first channel 22 and the second channel 23, thereby reducing the volume of the main body part 2. The distance from the axial direction of the valve device 100 to the reference plane is defined as the height, and at least part of the first channel 22 and the second channel 23 are located at the same height, so that the axial dimension of the main body part 2 can be reduced while ensuring the diameters of the first channel 22 and the second channel 23, thereby reducing the volume of the main body part 2.

[0027] In this embodiment, the outer periphery 21 of the main body part 2 is spherical, and the first end 28 is a part of the outer periphery 21 of the main body part 2. In this way, when manufacturing the valve core assembly 20, the main body part 2 can be first formed into a solid whole sphere, which is convenient for grinding the surface of the main body part 2, and then the main body part 2 is cut. In other embodiments, the first end 28 is located in the complete sphere where the outer periphery 21 is located. In other words, the structures of the main body part 2 are all recessed in the spherical outer periphery 21, which is convenient for processing the main body part 2.

[0028] The first channel 22 has a third opening 29 on the outer peripheral portion 21 of the main body part 2, and the second channel 23 has a fourth opening 25 and a fifth opening 26 on the outer peripheral portion 21 of the main body part 2. The third opening 29, the fourth opening 25 and the fifth opening 26 are sequentially spaced along the circumference of the valve device 100, and the centers of the third opening 29, the fourth opening 25 and the fifth opening 26 are all located at the same height or substantially at the same height as the center of the spherical surface where the outer peripheral portion 21 is located.

[0029] The valve body assembly 1 has at least four interfaces, such as Figures 3 to 8 As shown, in one embodiment of the valve device 100, the valve body assembly 1 has a first interface 14, a second interface 15, a third interface 16, and a fourth interface 17. Along the axial direction of the valve device 100, the first interface 14 is located at one side of the main body, the first interface 14 is far away from the main body 2 relative to the shaft component 4, and the first interface 14 is connected to the third channel 44. The valve body assembly 1 includes a valve body 11 and a first cover 12. The first cover 12 and the valve body 11 are separated structures. The first cover 12 is fixedly connected to the valve body 11. The first interface 14 is located at the first cover 12. Along the axial direction of the valve device 100, the first cover 12 is located at one side of the main body 2. The outer peripheral side of the shaft component 4 is slidably matched with the first cover 12, so that the first cover 12 radially limits the shaft component 4 to improve the coaxiality. The first cover 12 and the valve body 11 are separated structures, which facilitates the valve core assembly 20 to be installed into the accommodating cavity 10 along the axial direction, and then the first cover 12 is fixed to the valve body 11.

[0030] like Figures 3 to 8As shown, along the radial direction of the valve device 100, the second interface 15, the third interface 16 and the fourth interface 17 are all located outside the main body part 2, and the second interface 15, the third interface 16 and the fourth interface 17 are sequentially spaced along the circumference of the valve device 100. By controlling the rotation of the valve core assembly 20, the third opening 29 can be connected to at least one of the second interface 15, the third interface 16 and the fourth interface 17. The valve device 100 can achieve at least two communication modes. Specifically, the valve device 100 includes at least a first working mode and a second working mode. When the valve device 100 is in the first working mode, as shown in FIG. Figure 7 As shown, the third opening 29 is in communication with the fourth interface 17, the second channel 23 is in communication with the second interface 15, and the second channel 23 is in communication with the third interface 16. At this time, the valve device 100 can make the first interface 14 in communication with the fourth interface 17, and the second interface 15 in communication with the third interface 16. When the valve device 100 is in the second working mode, as shown in FIG. Figure 8 As shown, the second channel 23 is in communication with the third interface 16, the second channel 23 is in communication with the fourth interface 17, the valve body assembly 1 closes the third opening 29, and the second interface 15 is closed. At this time, the valve device 100 makes the first interface 14 not in communication with other interfaces, the second interface 15 not in communication with other interfaces, and the fourth interface 17 is in communication with the third interface 16. When the valve device 100 is connected to a thermal management system, the valve device 100 including only one valve core assembly 20 can replace a solution consisting of three two-way switch valves, or a solution consisting of one three-way switching valve and one two-way switch valve, thereby reducing the complexity of the control system, reducing the failure rate of the system, and reducing the occupied volume.

[0031] like Figure 3 , Figure 7 , Figure 8As shown, the valve body assembly 1 includes at least one second cover 13, which is a separate structure from the valve body 11. The second cover 13 is fixedly connected or limitedly connected to the valve body 11, and one of the second interface 15, the third interface 16, and the fourth interface 17 is located at the second cover 13. The valve body assembly 1 includes a valve seat assembly 5. Along the radial direction of the valve device 100, one side of the valve seat assembly 5 abuts against the second cover 13, and the other side of the valve seat assembly 5 abuts against the main body component 2. The second cover 13 is used to facilitate the installation of the valve seat assembly 5. The valve body assembly 1 includes a third sealing cover 19, which is fixedly connected or limitedly connected to the valve body 11, and the third sealing cover 19 is solidly arranged inside. The valve body assembly 1 includes a valve seat assembly 5. Along the radial direction of the valve device 100, one side of a valve seat assembly 5 abuts against the third sealing cover 19 and the other side abuts against the main body component 2. When one of the third opening 29, the fourth opening 25 and the fifth opening 26 is opposite to the third sealing cover 19, and the contact surface between the valve seat assembly 5 and the outer peripheral portion 21 surrounds the opening, the opening is closed. For example, when the valve device 100 is in the second working mode, the third opening 29 is opposite to the third sealing cover 19, and the contact surface between the valve seat assembly 5 and the outer peripheral portion 21 surrounds the third opening 29, and the third opening 29 is closed by the valve body assembly 1. The third sealing cover 19 has the same structure for fixing to the valve body 11 as the second sealing cover 13, so different valve body assembly 1 structures can be realized by only replacing the sealing cover, so that the valve body assembly 1 has strong versatility. In this embodiment, the centers of the second interface 15, the third interface 16, and the fourth interface 17 are spaced 90° apart relative to the central axis of the main part 2, and the centers of the second opening 46, the third opening 29, and the fourth opening 25 are spaced 90° apart relative to the central axis of the main part 2.

[0032] like Fig.10As shown, in another embodiment of the valve device 100, the valve body assembly 1 has five interfaces, the valve body assembly 1 has a first interface 14, a second interface 15, a third interface 16, a fourth interface 17, and a fifth interface 18. Along the axial direction of the valve device 100, the first interface 14 is located at one side of the main body component 2, the first interface 14 is far away from the main body component 2 relative to the shaft component 4, and the first interface 14 is connected to the third channel 44. The second interface 15, the third interface 16, the fourth interface 17, and the fifth interface 18 are all located radially outside the main body component 2, and the second interface 15, the third interface 16, the fourth interface 17, and the fifth interface 18 are sequentially distributed along the circumference of the valve device 100. By controlling the rotation of the valve core assembly 20, the third opening 29 can be connected to at least one of the second interface 15, the third interface 16, the fourth interface 17, and the fifth interface 18. Compared with the valve device 100 in the previous embodiment, in this embodiment, the third cover 19 in the previous embodiment is replaced by a second cover 13, and the fifth interface 18 is located in the second cover 13. When the valve device 100 is in the first working mode, the third opening 29 is connected to the fourth interface 17, and the second channel 23 is connected to the second interface 15 and the third interface 16. When the valve device 100 is in the second working mode, the third opening 29 is connected to the second interface 15, and the second channel 23 is connected to the third interface 16 and the fourth interface 17. The valve device 100 may also have other working modes, which will not be described here.

[0033] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that those skilled in the art can still modify or make equivalent substitutions to the present invention, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A valve device (100), characterized in that: The valve core assembly (20) comprises a shaft component (4) and a main body component (2), wherein the shaft component (4) is fixedly connected to the main body component (2), and along the axial direction of the valve device (100), at least part of the shaft component (4) is located on one side of the main body component (2); the valve core has a first channel (22) and a second channel (23), the first channel (22) and the second channel (23) are separated by a distance, the shaft component (4) has a third channel (44), the first channel (22) and the third channel (44) are connected, and the shaft component (4) and the second channel (23) are separated by a distance; A reference plane is defined, the axial direction of the valve device (100) is perpendicular to the reference plane, along the axial direction of the valve device (100), the orthographic projection of the first channel (22) on the reference plane is at least partially located within the orthographic projection of the shaft component (4) on the reference plane, and the orthographic projection of the second channel (23) on the reference plane is at least partially located within the orthographic projection of the shaft component (4) on the reference plane.

2. The valve device according to claim 1, characterized in that Along the axial direction of the valve device (100), the orthographic projection of the first channel (22) on the reference plane and the orthographic projection of the second channel (23) on the reference plane at least partially overlap; the distance from the axial direction of the valve device (100) to the reference plane is defined as the height, and at least part of the first channel (22) and the second channel (23) are located at the same height.

3. The valve device according to claim 1 or 2, characterized in that: The main body component (2) comprises a first end portion (28), the main body component (2) has a groove (27), along the axial direction of the valve device (100), the groove (27) is recessed in the first end portion (28) of the main body component (2) and extends toward a second end portion (201) included in the main body component (2), the shaft component (4) comprises an extending portion (41), and the extending portion (41) is located in the groove (27); The side wall forming the groove (27) extends along the axial direction of the valve device (100), and the outer periphery of the protruding portion (41) is tightly matched with the side wall forming the groove (27); And / or, the shaft component (4) is fixed to the first end portion (28) of the main body component (2) by welding, and the weld formed between the shaft component (4) and the main body component (2) surrounds the shaft component (4).

4. The valve device according to claim 3, characterized in that The first channel (22) has a first opening (24) on the bottom wall forming the groove (27), and the first opening (24) is connected to the third channel (44); the shaft component (4) includes an end surface portion (49), and along the axial direction of the valve device (100), the end surface portion (49) faces the bottom wall of the groove (27), and the third channel (44) has a second opening (46) on the end surface portion (49), and the first opening (24) is opposite to at least a part of the second opening (46); the first channel (22) includes a hole channel (221), and the hole channel (221) is adjacent to the first opening (24), and the extension surface of the hole wall forming the hole channel (221) passes through the second opening (46) and does not interfere with the second opening (46).

5. The valve device according to claim 4, characterized in that The third channel (44) extends as a whole along the axial direction of the valve device (100), and the wall forming the third channel (44) includes an inclined wall (47), and the inclined wall (47) is adjacent to the second opening (46). The radial dimension of the inclined wall (47) increases in the direction toward the second opening (46), and the extended surface of the hole wall forming the channel (221) does not interfere with the inclined wall (47).

6. The valve device according to claim 5, characterized in that The shaft component (4) includes a step portion (43), which is located at the radial outer periphery of the insertion portion (41). Along the axial direction of the valve device (100), the step portion (43) is away from the second opening (46) relative to the insertion portion (41), and the step portion (43) faces the first end portion (28). The step portion (43) is welded and fixed to or in contact with the first end portion (28).

7. The valve device according to claim 5, characterized in that The shaft component (4) has a through hole (45), one end of which is connected to the third channel (44), and the other end of which is connected to the third channel (44). The valve device (100) includes a valve body assembly (1), and the outer peripheral side of the shaft component (4) is slidably matched with the valve body assembly (1). The portion of the shaft component (4) that is slidably matched with the valve body assembly (1) is defined as a sliding surface (48). Along the axial direction of the valve device (100), at least part of the connecting port (401) is located between the main body component (2) and the sliding surface (48).

8. The valve device according to claim 3, characterized in that The outer periphery (21) of the main body component (2) is spherical, and the first end (28) is a part of the outer periphery (21) of the main body component (2), or the first end (28) is located within the complete spherical surface where the outer periphery (21) is located.

9. The valve device according to any one of claims 1, 2, 4 to 8, characterized in that: The first channel (22) has a third opening (29) at the outer peripheral portion (21) of the main body component (2), and the second channel (23) has a fourth opening (25) and a fifth opening (26) at the outer peripheral portion (21) of the main body component (2), and the third opening (29), the fourth opening (25) and the fifth opening (26) are sequentially spaced along the circumference of the valve device (100); The valve device (100) comprises a valve body assembly (1), the valve core assembly (20) is rotatable relative to the valve body assembly (1), the valve body assembly (1) has a receiving cavity (10), at least part of the valve core assembly (20) is located in the receiving cavity (10), the valve body assembly (1) has a first interface (14), a second interface (15), a third interface (16), and a fourth interface (17), along the axial direction of the valve device (100), the first interface (14) is located on one side of the main body component (2), and the first interface (14) is away from the shaft component (4) relative to the shaft component (4). The main body component (2), the first interface (14) is communicated with the third channel (44); along the radial direction of the valve device (100), the second interface (15), the third interface (16) and the fourth interface (17) are all located on the outside of the main body component (2), the second interface (15), the third interface (16) and the fourth interface (17) are sequentially spaced along the circumference of the valve device (100), and the third opening (29) can be communicated with at least one of the second interface (15), the third interface (16) and the fourth interface (17); The valve device (100) comprises at least a first working mode and a second working mode. When the valve device (100) is in the first working mode, the third opening (29) is in communication with the fourth interface (17), the second channel (23) is in communication with the second interface (15), and the second channel (23) is in communication with the third interface (16), so that the second interface (15) is in communication with the third interface (16); When the valve device (100) is in the second working mode, the second channel (23) is connected to the third interface (16), and the second channel (23) is connected to the fourth interface (17), so that the third interface (16) is connected to the fourth interface (17).

10. The valve device according to claim 3, characterized in that The first channel (22) has a third opening (29) at the outer peripheral portion (21) of the main body component (2), and the second channel (23) has a fourth opening (25) and a fifth opening (26) at the outer peripheral portion (21) of the main body component (2), and the third opening (29), the fourth opening (25) and the fifth opening (26) are sequentially spaced along the circumference of the valve device (100); The valve device (100) comprises a valve body assembly (1), the valve core assembly (20) is rotatable relative to the valve body assembly (1), the valve body assembly (1) has a receiving cavity (10), at least part of the valve core assembly (20) is located in the receiving cavity (10), the valve body assembly (1) has a first interface (14), a second interface (15), a third interface (16), and a fourth interface (17), along the axial direction of the valve device (100), the first interface (14) is located on one side of the main body component (2), and the first interface (14) is away from the shaft component (4) relative to the shaft component (4). The main body component (2), the first interface (14) is communicated with the third channel (44); along the radial direction of the valve device (100), the second interface (15), the third interface (16) and the fourth interface (17) are all located on the outside of the main body component (2), the second interface (15), the third interface (16) and the fourth interface (17) are sequentially spaced along the circumference of the valve device (100), and the third opening (29) can be communicated with at least one of the second interface (15), the third interface (16) and the fourth interface (17); The valve device (100) comprises at least a first working mode and a second working mode. When the valve device (100) is in the first working mode, the third opening (29) is in communication with the fourth interface (17), the second channel (23) is in communication with the second interface (15), and the second channel (23) is in communication with the third interface (16), so that the second interface (15) is in communication with the third interface (16); When the valve device (100) is in the second working mode, the second channel (23) is connected to the third interface (16), and the second channel (23) is connected to the fourth interface (17), so that the third interface (16) is connected to the fourth interface (17).

11. The valve device according to claim 9, characterized in that When the valve device (100) is in the second working mode, the valve body assembly (1) closes the third opening (29), and the second interface (15) is closed.

12. The valve device according to claim 10, characterized in that When the valve device (100) is in the second working mode, the valve body assembly (1) closes the third opening (29), and the second interface (15) is closed.

13. The valve device according to claim 9, characterized in that The valve body assembly (1) has a fifth interface (18), and along the radial direction of the valve device (100), the fifth interface (18) is located on the outside of the main body component (2), and the second interface (15), the third interface (16), the fourth interface (17) and the fifth interface (18) are sequentially spaced along the circumference of the valve device (100). By controlling the rotation of the valve core assembly (20), the third opening (29) can be connected to at least one of the second interface (15), the third interface (16), the fourth interface (17) and the fifth interface (18).

14. The valve device according to claim 10, characterized in that The valve body assembly (1) has a fifth interface (18), and along the radial direction of the valve device (100), the fifth interface (18) is located on the outside of the main body component (2), and the second interface (15), the third interface (16), the fourth interface (17) and the fifth interface (18) are sequentially spaced along the circumference of the valve device (100). By controlling the rotation of the valve core assembly (20), the third opening (29) can be connected to at least one of the second interface (15), the third interface (16), the fourth interface (17) and the fifth interface (18).

15. The valve device according to claim 9, characterized in that The valve body assembly (1) comprises a valve body (11) and a first sealing cover (12); the first sealing cover (12) and the valve body (11) are separate structures; the first sealing cover (12) and the valve body (11) are fixedly connected or position-limitedly connected; the first interface (14) is located on the first sealing cover (12); along the axial direction of the valve device (100), the first sealing cover (12) is located on one side of the main body component (2); and the outer peripheral side of the shaft component (4) is slidably matched with the first sealing cover (12); The valve body assembly (1) comprises at least one second cover (13), the second cover (13) and the valve body (11) are separate structures, the second cover (13) and the valve body (11) are fixedly connected or limit-connected, one of the second interface (15), the third interface (16) and the fourth interface (17) is located on the second cover (13), and the valve body assembly (1) comprises a valve seat assembly (5), along the radial direction of the valve device (100), one side of the valve seat assembly (5) is in contact with the second cover (13), and the other side of the valve seat assembly (5) is in contact with the main body component (2); And / or, the valve body assembly (1) includes a third sealing cover (19), the third sealing cover (19) is fixedly connected or limit-connected to the valve body (11), the third sealing cover (19) is solidly arranged inside, the valve body assembly (1) includes a valve seat assembly (5), along the radial direction of the valve device (100), one side of the valve seat assembly (5) abuts against the third sealing cover (19) and the other side abuts against the main body component (2), and the third sealing cover (19) and the second sealing cover (13) have the same structure for fixing to the valve body (11).

16. The valve device according to any one of claims 10 to 14, characterized in that: The valve body assembly (1) comprises a valve body (11) and a first sealing cover (12); the first sealing cover (12) and the valve body (11) are separate structures; the first sealing cover (12) and the valve body (11) are fixedly connected or position-limitedly connected; the first interface (14) is located on the first sealing cover (12); along the axial direction of the valve device (100), the first sealing cover (12) is located on one side of the main body component (2); and the outer peripheral side of the shaft component (4) is slidably matched with the first sealing cover (12); The valve body assembly (1) comprises at least one second cover (13), the second cover (13) and the valve body (11) are separate structures, the second cover (13) and the valve body (11) are fixedly connected or limit-connected, one of the second interface (15), the third interface (16) and the fourth interface (17) is located on the second cover (13), and the valve body assembly (1) comprises a valve seat assembly (5), along the radial direction of the valve device (100), one side of the valve seat assembly (5) is in contact with the second cover (13), and the other side of the valve seat assembly (5) is in contact with the main body component (2); And / or, the valve body assembly (1) includes a third sealing cover (19), the third sealing cover (19) is fixedly connected or limit-connected to the valve body (11), the third sealing cover (19) is solidly arranged inside, the valve body assembly (1) includes a valve seat assembly (5), along the radial direction of the valve device (100), one side of the valve seat assembly (5) abuts against the third sealing cover (19) and the other side abuts against the main body component (2), and the third sealing cover (19) and the second sealing cover (13) have the same structure for fixing to the valve body (11).

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