Valve device and thermal management assembly

Abstract

The invention discloses a valve device and a heat management assembly, the valve device is provided with a valve cavity, the valve device comprises a valve core assembly, a valve body assembly and a first sealing assembly, the valve body assembly comprises a bottom wall part, the bottom wall part limits a partial wall part of the valve cavity, the bottom wall part is provided with at least two communicating hole channels, and the first sealing assembly is provided with channel ports correspondingly communicating with the communicating hole channels; the first sealing assembly comprises an abutting part, the valve element assembly comprises a first end part adjacent to the bottom wall part, the abutting part can abut against the first end part, the abutting part limits channel openings and is projected in the axial direction of the valve device, part of the projection of the abutting part is located on the radial outer side of the projection of the first end part, and part of the channel openings communicate with the valve cavity; in this way, the stress of the valve element assembly is improved, and the movement stability of the valve element assembly is improved.

Description

Technical Field

[0001] The present invention relates to the field of fluid control, and in particular to a valve device and a thermal management component. Background Art

[0002] Typically, a valve core assembly in a valve device rotates under the drive of a driver to achieve fluid control of multiple flow paths. During operation, the fluid can easily exert an axial force on the valve core assembly, affecting its rotation and even causing it to become blocked. Summary of the Invention

[0003] The object of the present invention is to provide a valve device and a thermal management component, which are conducive to improving the force of the valve core component and enhancing the movement stability of the valve core component.

[0004] In one aspect, an embodiment of the present invention provides a valve device having a valve cavity, comprising a valve core assembly, a valve body assembly, and a first sealing assembly. The valve body assembly includes a bottom wall portion, the bottom wall portion defining a portion of a wall portion of the valve cavity, the bottom wall portion having at least two communication channels, the first sealing assembly having a channel opening corresponding to the communication channels, and at least a portion of the valve core assembly and the first sealing assembly being located in the valve cavity.

[0005] The first sealing assembly includes an abutment portion, and the valve core assembly includes a first end portion adjacent to the bottom wall portion. The abutment portion is capable of abutting against the first end portion, and the abutment portion defines the channel opening. Along the axial projection of the valve device, a portion of the projection of the abutment portion is located radially outside the projection of the first end portion, and a part of the channel openings are connected to the valve cavity.

[0006] According to the valve device provided in an embodiment of the present invention, the first sealing assembly includes an abutment portion. Projected along the axial direction of the valve device, the projected portion of the abutment portion is located radially outside the projection of the first end portion. A part of the channel openings is connected to the valve cavity, which facilitates the fluid to enter the valve cavity through a part of the channel openings, thereby improving the force applied to the valve core assembly and enhancing the movement stability of the valve core assembly.

[0007] On the other hand, an embodiment of the present invention further provides a thermal management component, which includes a fluid branch and the above-mentioned valve device, and the fluid branch is correspondingly connected to the communication channel.

[0008] According to the thermal management component provided by an embodiment of the present invention, along the axial projection of the valve device, the projected part of the abutment portion is located radially outside the projection of the first end portion, and a part of the channel openings are connected to the valve cavity, which facilitates the fluid to enter the valve cavity through a part of the channel openings, is beneficial to improving the force of the valve core assembly, and improves the movement stability of the valve core assembly, which is beneficial to improving the force of the valve core assembly and improves the movement stability of the valve core assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the exploded structure of a fluid control assembly provided by one embodiment of the present invention;

[0010] Figure 2 yes Figure 1 A schematic diagram of the three-dimensional structure of the fluid control component shown in FIG;

[0011] Figure 3 yes Figure 2 A schematic cross-sectional view of a fluid control assembly at one position is shown in FIG;

[0012] Figure 4 This is a schematic diagram of the three-dimensional structure of a valve device provided by an embodiment of the present invention;

[0013] Figure 5 yes Figure 3 FIG. 1 is a schematic diagram of an enlarged structure of a fluid control component at Q1;

[0014] Figure 6 yes Figure 2 A schematic cross-sectional view of a fluid control assembly at another position is shown;

[0015] Figure 7 yes Figure 4 A schematic structural diagram of a drive chamber, a valve chamber, and a conducting channel of a valve device is shown in FIG;

[0016] Figure 8 yes Figure 2 A schematic front view of a fluid control assembly is shown in FIG;

[0017] Figure 9 yes Figure 8 A schematic diagram of the cross-sectional structure of a fluid control component along the AA direction is shown in FIG;

[0018] Figure 10 This is a schematic diagram of the three-dimensional structure of a valve core assembly provided by an embodiment of the present invention;

[0019] Figure 11 yes Figure 10 A schematic cross-sectional view of a valve core assembly is shown in FIG;

[0020] Figure 12 is a schematic diagram of the cross-sectional structure of a connecting shaft provided by an embodiment of the present invention;

[0021] Figure 13 It is a schematic diagram of the cross-sectional structure of a shell provided by an embodiment of the present invention. Description of the drawings:

[0023] 1. Valve device; 101. Valve chamber; 102. Drive chamber; 103. Accommodating chamber; 104. Valve port; 10. Valve body assembly; 11. Bottom wall; 111. Communication channel; 112. Stopper; P1. First channel; P2. Second channel; P3. Third channel; 12. Connecting cover; 121. Top wall; 122. First mounting hole; 13. Side wall; 20. Valve core assembly; 201. Second end portion; 202. First end portion; 203. Conducting channel; 21. Conducting chamber; 22. Conducting channel; 23. Connecting shaft; 24. Main body; 25. First flange; 26. Second flange; 27. Second mounting hole; 28. Transmission connecting hole; 30. Transmission assembly; 31. Planetary gear assembly; 40. Pressure regulating assembly; 41 , limit block; 42, elastic adjustment member; 43, valve needle; 50, bearing assembly; 51, first gasket; 52, thrust bearing; 60, second sealing assembly; 61, second sealing block; 62, second elastic member; 63, second gasket; 70, first sealing assembly; 701, channel opening; 71, first sealing block; 711, abutment portion; 72, first elastic member; P4, first port; P5, second port; P6, third port; 80, drive assembly; 81, motor housing; 82, support plate; 83, stator assembly; 831, coil assembly; 84, isolation sleeve; 85, rotor assembly; 86, second connecting member; 2, fluid control assembly; 91, housing; 911, flow channel; 92, sealing gasket; 921, flow channel; 93, first connecting member. DETAILED DESCRIPTION

[0024] The features and exemplary embodiments of various aspects of the present invention are described below. To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below with reference to the accompanying drawings and specific embodiments. In this document, relational terms such as "first" and "second" are used merely to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0025] like Figures 1 to 5 As shown, an embodiment of the present invention provides a fluid control assembly 2 that can be used in a vehicle thermal management system or air conditioning system, and in particular, in a vehicle refrigerant circulation circuit. Specifically, the fluid control assembly 2 can be used to control the flow path in the refrigerant circulation circuit and / or adjust the refrigerant flow rate. The refrigerant can include, but is not limited to, one or a combination of carbon dioxide, YF refrigerant, or R134a refrigerant.

[0026] The fluid control assembly 2 provided in the embodiment of the present invention includes a valve device 1, a housing 91 and a sealing gasket 92. The valve device 1 includes a valve body assembly 10. The housing 91 and the valve body assembly 10 are arranged opposite to each other. Figures 2 to 4 As shown, the valve body assembly 10 has a mounting surface facing the housing 91, the housing 91 has a mating surface facing the valve body assembly 10, the sealing gasket 92 is located between the mounting surface and the mating surface, the valve body assembly 10 has a first mounting hole 122, the first connecting member 93 is disposed in the first mounting hole 122, and the first connecting member 93 connects the valve body assembly 10 and the housing 91, and the housing 91 and the valve body assembly 10 achieve sealing performance through the sealing gasket 92. The valve device 1 has at least two communicating channels 111, as shown in FIG. Figure 13 As shown, the housing 91 has at least two flow channels 911 corresponding to the communication channels 111. The flow channels 911 communicate with the corresponding communication channels 111, facilitating fluid flow between the housing 91 and the valve device 1. The housing 91 herein may be a standalone housing structure, or it may be a flow channel plate structure having multiple flow channels and / or mounting cavities. The number of communication channels 111 in the valve device 1 may be two, three, four, or more. This description assumes that there are three communication channels 111.

[0027] To achieve the fluid control function of a fluid control assembly 2, an embodiment of the present invention provides a valve device 1. The valve device 1 has a valve cavity 101, and includes a valve body assembly 10 and a valve core assembly 20. The valve body assembly 10 defines at least a portion of the wall of the valve cavity 101. The valve core assembly 20 is at least partially located in the valve cavity 101. The valve core assembly 20 has a conductive passage 203. Through the rotation of the valve core assembly 20, the conductive passage 203 connects at least two communication channels 111. In this embodiment of the present invention, the valve body assembly 10 includes a bottom wall portion 11, which defines a portion of the wall of the valve cavity 101. The at least two communication channels 111 are both located in the bottom wall portion 11. The conductive passage 203 is capable of connecting the at least two communication channels 111. When high-pressure fluid or low-pressure fluid flows into the valve device 1 from the communication channel 111, the fluid enters the conductive passage 203, generating an axial force on the valve core assembly 20, which affects the rotational stability of the valve core assembly 20. In the embodiment of the present invention, the conducting channel 203 includes a conducting cavity 21 and a conducting hole 22 that are interconnected. The conducting hole 22 can be arranged opposite to the communicating hole 111 .

[0028] To improve the above issues, please refer to Figures 2 to 5 The valve device 1 of the embodiment of the present invention further comprises a drive chamber 102 and a receiving chamber 103. Along the axial direction of the valve device 1, part of the valve chamber 101 and at least part of the drive chamber 102 are located on one side of the conducting channel 203, and at least part of the communicating channels 111 are located on the other side of the conducting channel 203. Figure 3As shown, along the axial direction of the valve device 1, a portion of the valve cavity 101 and at least a portion of the drive cavity 102 are located on the top side of the conductive channel 203, and at least a portion of the communication channels 111 are located on the bottom side of the conductive channel 203. The drive cavity 102, the valve cavity 101, and the conductive channel 203 are sealed.

[0029] Furthermore, the valve device 1 also includes a transmission assembly 30 and at least one pressure regulating assembly 40. At least a portion of the valve core assembly 20 is located in the valve chamber 101, and at least a portion of the transmission assembly 30 is located in the drive chamber 102. The transmission assembly 30 is in transmission connection with the valve core assembly 20, and at least a portion of the pressure regulating assembly 40 is located in the accommodating chamber 103. The at least one pressure regulating assembly 40 is capable of connecting and / or disconnecting at least one of the drive chamber 102 and the valve chamber 101 from the conducting channel 203. Through the above arrangement, at least one of the pressure in the drive chamber 102 and the pressure in the valve chamber 101 can be adjusted to the pressure in the conducting channel 203, which is beneficial for improving the force applied to the valve core assembly 20, enhancing the movement stability of the valve core assembly 20, and reducing or preventing the valve core assembly 20 from stalling due to excessive axial force on the valve core assembly 20.

[0030] In some embodiments, the valve device 1 includes a bottom wall portion 11 and a side wall portion 13. The bottom wall portion 11 defines a portion of the wall of the valve chamber 101. All communication channels 111 are located in the bottom wall portion 11. The bottom wall portion 11 is connected to the housing 91 via a first connector 93. The fluid control assembly also includes a sealing gasket 92 having a flow channel 921 that communicates with a corresponding communication channel 111.

[0031] Optionally, the bottom wall portion 11 and the side wall portion 13 extend in perpendicular directions, and at least two communication channels 111 are located in the bottom wall portion 11. For example, in some embodiments of the present invention, Figures 3 to 7 As shown, the bottom wall portion 11 has three communication channels 111. Optionally, the bottom wall portion 11 may have two, four, five or more communication channels 111. In other embodiments, the side wall portion 13 may also have a communication channel.

[0032] In order to further reduce the movement resistance of the valve core assembly 20, in some embodiments, the valve device 1 also includes a bearing assembly 50, and the valve body assembly 10 also includes a connecting cover 12, the connecting cover includes a top wall portion 121, and the top wall portion 121 and the bottom wall portion 11 are arranged along the axial direction of the valve device 1. Optionally, the side wall portion 13 can be an integral structure with one of the bottom wall portion 11 and the top wall portion 121, and the side wall portion 13 can be sealed with the other of the bottom wall portion 11 and the top wall portion 121.

[0033] Please see further Figures 1 to 11The top wall portion 121 defines a portion of the wall of the valve cavity 101. The valve core assembly 20 includes a second end portion 201 facing the top wall portion 121. The bearing assembly 50 is located between the second end portion 201 and the top wall portion 121 along the axial direction of the valve core assembly 20. Because the bearing assembly 50 can withstand axial forces, when the bearing assembly 50 abuts the valve core assembly 20, rotational friction is generated between the bearing assembly 50 and the valve core assembly 20. Compared to the sliding friction generated when the valve core assembly 20 abuts against a fixed component, the bearing assembly 50 in this embodiment of the present invention can reduce the resistance to the rotation of the valve core assembly 20.

[0034] In a specific implementation, the bearing assembly 50 may include a first gasket 51 and a thrust bearing 52. Along the axial direction of the valve device 1, the first gasket 51 is disposed in abutment between the thrust bearing 52 and the top wall portion 121. The thrust bearing 52 may directly abut the second end portion 201 of the valve core assembly 20, or a spacer may be provided between the thrust bearing 52 and the valve core assembly 20. The thrust bearing 52 can effectively withstand axial forces, and its small size facilitates the miniaturization of the valve device 1. Alternatively, the valve core assembly 20 may be an integral structure to simplify assembly.

[0035] In other embodiments, a bearing assembly may be disposed between the bottom wall 11 and the valve core assembly 20 to reduce the rotational resistance of the valve core assembly 20 during rotation. To rationally arrange the communication channel 111 of the valve device, reduce the space occupied by the valve device 1, and reduce costs, this document uses the example of disposing the bearing assembly 50 between the top wall 121 and the valve core assembly 20.

[0036] When the bearing assembly 50 is disposed between the top wall portion 121 and the valve core assembly 20, if the axial force on the valve core assembly 20 is upward and toward the bearing assembly 50, it is convenient to reduce the resistance encountered by the valve core assembly 20 during movement. Based on this, in some embodiments, the pressure regulating assembly 40 is configured as follows: when the pressure of the drive chamber 102 is greater than the pressure of the conducting channel 203, the pressure regulating assembly 40 connects the conducting channel 203 and the drive chamber 102, so that the pressure of the drive chamber 102 is released to the conducting channel 203, thereby improving the valve core assembly 20 from being subjected to a large force away from the bearing assembly 50 caused by the excessive pressure in the drive chamber 102, causing the valve core assembly 20 to be blocked. Figure 6 and Figure 7As shown, the above arrangement facilitates the application of a force toward the bearing assembly 50 to the valve core assembly 20, that is, the application of an axial upward force to the valve core assembly 20, thereby facilitating the reduction of the movement resistance of the valve core assembly 20 via the bearing assembly 50. When the pressure in the drive chamber 102 is less than or equal to the pressure in the conducting channel 203, the pressure regulating assembly 40 isolates the fluid in the conducting channel 203 from the fluid in the drive chamber 102. The above arrangement facilitates the reduction of fluid leakage in the valve device 1, thereby ensuring that the valve core assembly 20 is subjected to an axial force toward the bearing assembly 50.

[0037] In a specific implementation, the pressure regulating assembly 40 has a unidirectional conduction function. The valve device 1 can have a pressure regulating assembly 40, which can unidirectionally connect the drive chamber 102 and the conduction channel 203, or the pressure regulating assembly can unidirectionally connect the valve chamber 101 and the conduction channel 203. In other embodiments, the valve device 1 can include at least two pressure regulating assemblies 40, one of which can unidirectionally connect the drive chamber 102 and the conduction channel 203, and the other pressure regulating assembly 40 can unidirectionally connect the valve chamber 101 and the conduction channel 203, so that the valve core assembly 20 is subjected to an axial force toward the bearing assembly 50. Optionally, the pressure regulating assembly 40 can also be located between the valve chamber 101 and the drive chamber 102 to facilitate adjusting the fluid pressure between the valve chamber 101 and the drive chamber 102, thereby adjusting the force applied to the valve core assembly 20.

[0038] Specifically, the pressure regulating assembly 40 may include a stopper 41, an elastic regulating member 42, and a valve needle 43. At least a portion of the stopper 41, the elastic regulating member 42, and the valve needle 43 are located in the accommodating chamber 103. Along the axial direction of the valve device 1, at least a portion of the elastic regulating member 42 is located between the stopper 41 and the valve needle 43. The stopper 41 is fixed relative to the wall defining the accommodating chamber 103, for example, by interference fit, welding, or bonding. The valve device 1 further includes a valve port 104. The elastic regulating member 42 has an elastic deformation that enables the valve needle 43 to move toward or away from the valve port 104. At least one of the drive chamber 102 and the valve chamber 101 communicates with the conducting channel 203 via the valve port 104. When the pressure regulating assembly 40 is capable of unidirectionally connecting the driving chamber 102 and the conducting channel 203 , the valve port 104 is disposed close to the driving chamber 102 , and the limiting block 41 is disposed close to the conducting channel 203 .

[0039] In some embodiments, the valve device 1 further includes a first sealing assembly 70 and a second sealing assembly 60. The first sealing assembly 70 is disposed between the bottom wall portion 11 and the valve core assembly 20. The second sealing assembly is disposed between the top wall portion 121 and the valve core assembly 20, thereby improving the sealing performance of the valve device 1.

[0040] The valve device 1 also includes a connecting shaft 23, which forms an interference fit with the valve core assembly 20. The connecting shaft 23 provides a transmission connection between the transmission assembly 30 and the valve core assembly 20. To provide a seal between the valve chamber 101 and the drive chamber 102, the valve device 1 also includes a second sealing assembly 60. The second sealing assembly 60 is sleeved around the outer periphery of the connecting shaft 23. Along the axial direction of the valve device 1, the second sealing assembly 60 is sealingly disposed between the second end portion 201 and the top wall portion 121. The second sealing assembly 60 and the bearing assembly 50 are sleeved within each other, thereby separating the valve chamber 101 and the drive chamber 102 through the second sealing assembly 60.

[0041] In a specific implementation, the valve core assembly 20 has a second mounting hole 27, a portion of the connecting shaft 23 is located in the second mounting hole 27, and the connecting shaft 23 is fixedly connected to the wall portion defining the second mounting hole 27, for example, the connecting shaft 23 and the wall portion defining the mounting cavity are interference fit or bonded or welded, etc., and the accommodating cavity 103 can be located on the connecting shaft 23. Figure 12 As shown, the connecting shaft 23 may further include a transmission connection hole 28 , and the output shaft of the planetary gear assembly 31 may be located in the transmission connection hole 28 , so that the planetary gear assembly 31 drives the valve core assembly 20 to rotate.

[0042] like Figure 5 As shown, the second sealing assembly 60 includes a second sealing block 61 and a second elastic member 62. Along the axial direction of the valve device 1, the second sealing block 61 abuts against the valve core assembly 20, and the second elastic member 62 is located between the second sealing block 61 and the top wall portion 121. At this time, the second elastic member 62 can abut against the top wall portion 121. In some other embodiments, the second sealing assembly 60 also includes a second gasket 63. Along the axial direction of the valve device 1, the second gasket 63 abuts against the second elastic member 62 and the top wall portion 121. The above arrangement facilitates sealing between the valve cavity 101 and the drive cavity 102, reducing fluid leakage between the valve cavity 101 and the drive cavity 102. The second sealing assembly 60 can seal between the valve cavity 101 and the drive cavity 102, so that there is no fluid interaction between the valve cavity 101 and the drive cavity 102, or the fluid interaction is within a preset range.

[0043] In some embodiments, the valve device 1 further includes a first sealing assembly 70, which includes a first elastic member 72 and a first sealing block 71. Along the axial direction of the valve core assembly 20, the first elastic member 72 is located on the side of the first sealing block 71 away from the valve core assembly 20. The first elastic member 72 abuts against the bottom wall portion 11, and the first sealing block 71 abuts against the first end portion 202 of the valve core assembly 20. Figure 6 and Figure 7 As shown, Figure 7The diagram schematically illustrates the distribution of the valve cavity 101, drive cavity 102, and conducting channel 203. Because portions of the valve cavity 101 and drive cavity 102 are located on the top side of the valve core assembly 20, they are susceptible to exerting an axial downward force on the valve core assembly 20. The conducting channel 203 and the first elastic member 72 both exert an axial upward force on the valve core assembly 20. To ensure that the valve core assembly 20 is subjected to an axial upward force, the force exerted by the first elastic member 72 on the valve core assembly 20 is defined as F1, the force exerted by the portion of the valve cavity 101 on the valve core assembly 20 is defined as F2, the force exerted by the drive cavity 102 on the valve core assembly 20 is defined as F3, and the force exerted by the conducting channel 203 on the valve core assembly 20 is defined as F4, where F1+F4≥F2+F3. This arrangement facilitates directing the axial force acting on the valve core assembly 20 toward the thrust bearing 52. Because the thrust bearing 52 is well-suited to withstanding axial forces, the valve core assembly 20 abuts against the thrust bearing 52, thereby reducing the resistance to movement of the valve core assembly 20. When the valve device 1 is in operation, the fluid exerts a significant axial thrust on the valve core assembly. This, constrained and protected by the thrust bearing 52, mitigates the risk of valve core assembly 20 stalling due to compression. It should be understood that the terms "axially upward" and "axially downward" as used herein are based on examples in the accompanying drawings.

[0044] In a specific implementation, the component material of the second elastic member 62 and / or the first elastic member 72 may include ethylene propylene diene monomer (EPDM), and the component material of the second sealing block 61 and / or the first sealing block 71 may include polyether ether ketone (PEEK). The second sealing block 61 is not easily elastically deformed.

[0045] To further adjust the force on the valve core assembly 20, as shown in FIG. Figures 9 to 11As shown, in some embodiments, the valve core assembly 20 includes a main body 24, a first flange 25, and a second flange 26. The first flange 25 protrudes radially from the main body 24, while the second flange 26 protrudes radially from the main body 24. Axially, the first flange 25 is disposed at one end of the main body 24, while the second flange 26 is disposed at the other end of the main body 24. The first flange 25 is disposed adjacent to the bottom wall 11, while the second flange 26 is disposed adjacent to the top wall 121. Along the circumference of the main body 24, the first flange 25 protrudes partially from the outer circumference of the main body 24, while the second flange 26 surrounds the entire circumference of the main body 24. This arrangement allows the first and second flanges 25, 26 to be positioned relative to the valve body assembly 10, reducing the area of ​​​​positioning between the valve core assembly 20 and the valve body assembly 10, thereby facilitating a reduction in the driving force of the valve core assembly 20. At this time, the bearing assembly 50 may be located between the second flange portion 26 and the top wall portion 121 .

[0046] To achieve sealing of the valve device 1, the first sealing block 71 of the first sealing assembly 70 includes an abutment portion 711, which is capable of abutting against the valve core assembly 20. The valve core assembly 20 includes a first end 202 adjacent to the bottom wall 11 and a second end 201 adjacent to the top wall 121. The abutment portion 711 is capable of abutting against the first end 202. The abutment portion 711 defines a channel opening 701. Axially projected along the valve device 1, the projected portion of the abutment portion 711 is radially outward of the projected portion of the first end. A portion of the channel opening 701 communicates with the valve cavity 101. With this arrangement, when the valve device 1 is used in a thermal management system, fluid within the thermal management system can enter the valve cavity 101 through the channel opening 701, which helps improve the stress on the valve core assembly 20. In a specific implementation, the first sealing block 71 has a curved surface facing the valve core assembly 20, with the top of the curved surface abutting against the valve core assembly 20, thereby serving as the abutment portion 711.

[0047] The first sealing assembly 70 has a channel opening 701 corresponding to the communication channel 111. The abutment portion 711 defines the channel opening 701, allowing fluid to flow through the channel opening 701. Along the radial direction of the valve core assembly 20 and the valve device 1, the outer edge of the main body 24 is closer to the axis of the valve core assembly 20 than some of the abutment portions 711, while the outer edge of the first flange portion 25 is further away from the axis of the valve core assembly 20 than the abutment portions 711. This arrangement facilitates communication between a portion of the channel openings 701 and the valve cavity 101.

[0048] Specifically, the communication channel 111 includes a first channel P1, a second channel P2, and a third channel P3. The channel opening 701 includes a first port P4 communicating with the first channel P1, a second port P5 communicating with the second channel P2, and a third port P6 communicating with the third channel P3. In at least one operating mode of the valve device 1, the communication channel 203 connects the first channel P1, the first port P4, the second channel P2, and the fifth port P5, while the third port P6 is closed. The first end portion 202 is in sealing contact with both the abutment portion 711 defining the first port P4 and the abutment portion 711 defining the second port P5. A radial gap is provided between the main body 24 and the abutment portion 711 defining the third port P6. The third channel P3 and the third port P6 are in communication with the valve chamber 101. The combined structure formed by the first flange portion 25 and the main body 24 is sealed against both the wall defining the first port P4 and the wall defining the second port P5. With the above arrangement, when the valve device 1 is used in the fluid control assembly 2, fluid in the fluid branch connected to the third port P3 can enter the valve chamber 101 through the third port P3, thereby improving the stress on the valve core assembly 20. In this context, "the third port P6 is closed" means that, in the valve device 1, the third port P6 is not connected to either the first port P4 or the second port P5.

[0049] Combine Figure 7 and Figure 9 As shown, when the valve device 1 is used in a fluid control assembly 2 and a thermal management system, the first channel P1, the second channel P2, and the third channel P3 can all communicate with the fluid branch in the thermal management system. In a specific implementation, in one operating mode of the valve device 1, the conductive channel 203 connects the first channel P1 and the second channel P2, and the first channel P1 and the second channel P2 are both fluidically isolated from the third channel P3. This description uses the first channel P1 as the inlet and the second channel P2 as the outlet as an example.

[0050] Specifically, from the force analysis of the valve core assembly 20, it can be seen that for the upper end surface of the valve core assembly 20 close to the drive chamber 102, the fluid in the valve chamber 101 generates an axial downward pressure σ1 on the valve core assembly 20, and the effective area of ​​the pressure σ1 is defined as S1. A part of the fluid entering the valve chamber 101 may leak into the drive chamber 102, or the drive chamber 102 is an atmospheric pressure chamber. At this time, the drive chamber 102 generates an axial downward pressure σ2 on the valve core assembly 20, and the effective area of ​​the pressure σ2 is defined as S2. With respect to the lower end surface of the valve core assembly 20 near the bottom wall portion 11, the fluid in the valve chamber 101 generates an axially upward pressure σ3 on the valve core assembly 20, with the effective area of ​​pressure σ3 defined as S3. The fluid in the first port P4 generates an axially upward pressure σ4 on the valve core assembly 20, with the effective area of ​​pressure σ4 defined as S4. The fluid in the second port P5 generates an axially upward pressure σ5 on the valve core assembly 20, with the effective area of ​​pressure σ5 defined as S5. The fluid in the third port P6 generates an axially upward pressure σ6 on the valve core assembly 20, with the effective area of ​​pressure σ6 defined as S6. By controlling σ3*S3+σ4*S4+σ5*S5+σ6*S6≥σ1*S1+σ1*S1, the valve core assembly 20 is easily subjected to the combined axial upward force. By controlling the force-bearing areas between each chamber and each port and the valve core assembly 20, the force applied to the valve core assembly 20 of the valve device 1 under complex working conditions can be improved.

[0051] In an embodiment of the present invention, the force direction of the valve core assembly 20 under complex working conditions is adjusted by distributing the pressure in the valve cavity 101, the conducting channel 203, and the drive cavity 102, which is beneficial for subjecting the valve core assembly 20 to an axially upward force, and then the force on the valve core assembly 20 is carried by the thrust bearing 52, thereby reducing the resistance of the valve core assembly 20 during rotation. Furthermore, the valve core assembly 20 and the valve body assembly 10 can be clearance-fitted, the bearing assembly 50 and the connecting shaft 23 can be clearance-fitted, and the second sealing assembly 60 and the connecting shaft can be clearance-fitted, thereby reducing the assembly complexity, reducing the process parameters, and improving the first-time qualified rate of assembly. Alternatively, during the operation of the valve device 1, even if the valve core assembly is subjected to an axially downward combined force, the axially downward combined force can be reduced by setting the pressure regulating assembly 40. By setting the redundant transmission force of the transmission assembly, the stability of the movement of the valve core assembly 20 can be improved, and the occurrence of stalling can be reduced or avoided.

[0052] In order to limit the rotational position of the valve core assembly 20, in some embodiments, the valve device 1 also includes a stopper 112. The stopper 112 can be a short axis structure. The stopper 112 can be fixed to the bottom wall portion 11. For example, the stopper 112 and the bottom wall portion 11 can be an integral structure, or the stopper 112 and the bottom wall portion 11 can be fixedly connected by interference fit, bonding, welding, etc. The two end surfaces of the first flange portion 25 in the circumferential direction can abut against the stopper 112 to limit the position of the valve core assembly 20.

[0053] To achieve the rotation of the valve core assembly 20, in some embodiments, the valve device 1 also includes a motor housing 81, a support plate 82, a stator assembly 83, an isolation sleeve 84, a transmission assembly 30, and a rotor assembly 85. The isolation sleeve 84 is sealed with the connection cover 12. The rotor assembly 85 is arranged on the inner periphery of the isolation sleeve 84, and the stator assembly 83 includes a coil assembly 831. The coil assembly 831 is sleeved on the outer periphery of the isolation sleeve 84. The rotor assembly 85 is located within the magnetic field range of the coil assembly 831 in the working state. The area where the coil assembly 831 is located is fluidically isolated from the area where the rotor assembly 85 is located by the isolation sleeve 84 to prevent the fluid from entering the area where the coil assembly 831 is located and causing damage to the coil assembly 831. The support plate 82 is sleeved on the outer periphery of the valve body assembly 10, and the support plate 82 is limited by the connection cover 12. The motor housing 81 and the support plate 82 are connected by fasteners such as bolts.

[0054] In this embodiment, the motor housing 81 can be fixed to the coil assembly 831 by injection molding or the coil assembly 831 can be limitedly set in the drive cavity of the motor housing 81. The control board is electrically connected to the coil assembly 831 and controls the power on or off of the coil assembly 831. When the coil assembly 831 is energized, it can generate a magnetic field. The rotor assembly 85 can rotate under the action of the magnetic field, and then can transmit power to the planetary gear assembly 31, and then drive the valve core assembly 20 to rotate through the planetary gear assembly 31.

[0055] In summary, according to the valve device 1 provided in an embodiment of the present invention, along the axial projection of the valve device 1, the projected portion of the abutment portion 711 is located radially outside the projection of the first end portion 202, and a part of the channel openings 701 are connected to the valve cavity 101, which facilitates the fluid to enter the valve cavity through a part of the channel openings 701, which is beneficial to improving the force on the valve core assembly 20 and improving the movement stability of the valve core assembly 20.

[0056] An embodiment of the present invention further provides a thermal management assembly, comprising a fluid branch and the aforementioned valve device 1, wherein the fluid branch is in communication with the communication channel 111. This arrangement allows fluid in the fluid branch to enter the valve cavity 101 through the communication channel 111, thereby improving the stress on the valve core assembly 20.

[0057] 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. For example, with respect to the directional definitions of “front”, “back”, “left”, “right”, “up” and “down”, although this specification has described the present invention with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified, combined or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A valve device (1), characterized in that: The valve device (1) has a valve cavity (101), the valve device (1) includes a valve core assembly (20), a valve body assembly (10) and a first sealing assembly (70), the valve body assembly (10) includes a bottom wall portion (11), the bottom wall portion (11) defines a portion of the wall portion of the valve cavity (101), the bottom wall portion (11) has at least two communication channels (111), the first sealing assembly (70) has a channel opening (701) corresponding to the communication channels (111), and at least part of the valve core assembly (20) and the first sealing assembly (70) are both located in the valve cavity (101); The first sealing assembly (70) includes an abutment portion (711), and the valve core assembly (20) includes a first end portion (202) adjacent to the bottom wall portion. The abutment portion (711) is capable of abutting against the first end portion (202), and the abutment portion (711) defines the channel opening (701). Along the axial projection of the valve device (1), a portion of the projection of the abutment portion (711) is located radially outside the projection of the first end portion, and a portion of the channel openings (701) are connected to the valve cavity (101).

2. The valve device (1) according to claim 1, characterized in that The valve core assembly includes a main body (24), the first end portion (202) includes a portion of the main body (24) and a first flange portion (25), the first flange portion (25) surrounds a portion of the outer circumference of the main body (24), the first flange portion (25) protrudes from the main body (24) along the radial direction of the main body (24), and along the radial direction of the valve device (1), the outer edge of the main body (24) is closer to the axis of the valve core assembly (20) than part of the abutment portion (711), and the outer edge of the first flange portion (25) is farther away from the axis of the valve core assembly (20) than the abutment portion (711).

3. The valve device (1) according to claim 2, characterized in that The valve core assembly (20) has a conducting channel (203), the communicating channel (111) includes a first channel (P1), a second channel (P2) and a third channel (P3), and the channel port (701) has a first port (P4) communicating with the first channel (P1), a second port (P5) communicating with the second channel (P2), and a third port (P6) communicating with the third channel (P3); In at least one working mode of the valve device (1), the conducting channel (203) connects the first channel (P1), the first port (P4), the second channel (P2) and the fifth port (P5), the third port (P6) is closed, the first end portion (202) is in sealed abutment with the abutment portion (711) defining the first port (P4) and the abutment portion (711) defining the second port (P5), a radial gap is provided between the main body (24) and the abutment portion (711) defining the third port (P6), and the third channel (P3), the third port (P6) and the valve cavity (101) are connected.

4. The valve device (1) according to claim 2, characterized in that The valve device (1) further includes a stopper (112), which is fixedly arranged on the bottom wall portion (11), and the stopper (112) protrudes from the bottom wall portion (11) toward the side close to the valve core assembly (20), and the stopper (112) can abut against the end face of the first flange portion (25) in the circumferential direction.

5. The valve device (1) according to any one of claims 2 to 4, characterized in that The valve core assembly (20) further includes a second flange portion (26), which protrudes from the main body portion (24) in the radial direction of the main body portion (24). Along the axial direction of the valve core assembly (20), the first flange portion (25) is arranged at one end of the main body portion (24), and the second flange portion (26) is arranged at the other end of the main body portion (24).

6. The valve device (1) according to claim 5, characterized in that The valve device (1) further includes a bearing assembly (50), and the valve body assembly (10) further includes a top wall portion (121). The top wall portion (121) and the bottom wall portion (11) are arranged along the axial direction of the valve device (1), and the top wall portion (121) defines a portion of the wall portion of the valve cavity (101). Along the axial direction of the valve core assembly (20), the bearing assembly (50) is located between the second flange portion (26) and the top wall portion (121).

7. The valve device (1) according to any one of claims 1 to 4, characterized in that The valve device (1) further comprises a drive chamber (102) and a receiving chamber (103), and further comprises a transmission assembly (30), a pressure regulating assembly (40) and a second sealing assembly (60). At least a portion of the transmission assembly (30) is located in the drive chamber (102), and the transmission assembly (30) is in transmission connection with the valve core assembly (20). At least a portion of the pressure regulating assembly (40) is located in the receiving chamber (103). The valve core assembly (20) has a conducting channel (203). The valve chamber (101) and the drive chamber (102) are separated by the second sealing assembly (60). The conducting channel (203) is capable of conducting at least two communicating channels (111). The pressure regulating assembly (40) is capable of conducting and / or blocking at least one of the drive chamber (102) and the valve chamber (101) with the conducting channel (203).

8. The valve device (1) according to claim 7, characterized in that Along the axial direction of the valve device (1), part of the valve cavity (101) and at least part of the drive cavity (102) are both located on one side of the conducting channel (203), and at least part of the communicating channels (111) are located on the other side of the conducting channel (203); The pressure regulating assembly (40) is configured to: when the pressure of the driving chamber (102) is greater than the pressure of the conducting channel (203), the pressure regulating assembly (40) connects the conducting channel (203) and the driving chamber (102); when the pressure of the driving chamber (102) is less than or equal to the pressure of the conducting channel (203), the pressure regulating assembly (40) isolates the fluids in the conducting channel (203) and the driving chamber (102).

9. The valve device (1) according to claim 7, characterized in that The pressure regulating assembly (40) comprises a limit block (41), an elastic regulating member (42) and a valve needle (43); at least a portion of the limit block (41), the elastic regulating member (42) and the valve needle (43) are all located in the accommodating cavity (103); along the axial direction of the valve device (1), at least a portion of the elastic regulating member (42) is located between the limit block (41) and the valve needle (43); the limit block (41) is fixedly arranged relative to a wall portion defining the accommodating cavity (103); The valve device (1) further comprises a valve port (104), the elastic adjusting member (42) has an elastic deformation, the valve needle (43) is capable of moving toward or away from the valve port (104), and at least one of the drive chamber (102) and the valve chamber (101) is connected to the conducting channel (203) via the valve port (104).

10. The valve device (1) according to claim 9, characterized in that The valve device (1) further includes a bearing assembly (50), the valve body assembly (10) further includes a top wall portion (121), the valve device (1) further includes a connecting shaft (23), the connecting shaft (23) transmission-connects the transmission assembly (30) and the valve core assembly (20), the second sealing assembly (60) is sleeved on the outer peripheral side of the connecting shaft (23), and along the axial direction of the valve device (1), the second sealing assembly (60) is sealingly arranged between the valve core assembly (20) and the top wall portion (121), and one of the second sealing assembly (60) and the bearing assembly (50) is sleeved inside the other.

11. A thermal management component, characterized in that The thermal management component comprises a fluid branch and a valve device (1) according to any one of claims 1 to 10, wherein the fluid branch is correspondingly connected to the communication channel (111).

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