Valve device and thermal management system

Abstract

The utility model provides a valve device and a heat management system. The valve device comprises a valve seat, a first fixed valve plate, a second fixed valve plate and a valve plate connecting piece. The valve seat is provided with a first connector and a second connector which are connected with an external flow path. The first fixed valve plate is provided with a first flow channel opening, the first flow channel opening is communicated with the first connector, the second fixed valve plate is provided with a second flow channel opening, the second flow channel opening is communicated with the second connector, and the first fixed valve plate and the second fixed valve plate are both arranged in the valve seat and are arranged in a spaced mode in the linear direction. A fluid path is formed between the first flow channel opening and the second flow channel opening; and the valve plate connecting piece is respectively connected with the first fixed valve plate and the second fixed valve plate. According to the valve device, the relative position of the first fixed valve plate and the second fixed valve plate in the valve seat can be limited through the valve plate connecting piece, then the relative position between the first flow channel opening and the second flow channel opening is limited, and the flow control precision of the valve device is improved.

Description

[0001] This application is based on and claims priority to Chinese patent application No. 202410174480.7, filed on February 7, 2024, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of valve, and particularly relates to a valve device and a thermal management system. BACKGROUND

[0003] With the rapid development of the new energy automobile industry, the technology of the thermal management system of the vehicle is also continuously improved. Under such a background, the electronic expansion valve, as a key component in the thermal management system, plays a crucial role.

[0004] At present, for the valve plate type expansion valve, the installation precision of the valve plate is low in the assembly process, and the relative positions between the accurate positioning flow channel openings are not accurate, thereby causing problems such as low flow control precision of the valve device and poor refrigeration efficiency.

[0005] Based on this, the present application provides a valve device and a thermal management system to improve the prior art. SUMMARY

[0006] The purpose of the present application is to provide a valve device and a thermal management system to solve the problem of accurately positioning the relative positions between the flow channel openings.

[0007] In a first aspect, an embodiment of the present application provides a valve device, comprising a valve seat, the valve seat having a first interface and a second interface connected to an external flow path, the valve device further comprising:

[0008] a first fixed valve plate, the first fixed valve plate being provided with a first flow channel opening, the first flow channel opening being in communication with the first interface;

[0009] a second fixed valve plate, the second fixed valve plate being provided with a second flow channel opening, the second flow channel opening being in communication with the second interface, the first fixed valve plate and the second fixed valve plate being arranged in the valve seat and being spaced apart in a straight line direction, a fluid path being formed between the first flow channel opening and the second flow channel opening;

[0010] a valve plate connecting piece, the valve plate connecting piece being connected to the first fixed valve plate and the second fixed valve plate respectively, so as to limit the relative positions between the first flow channel opening and the second flow channel opening.

[0011] In some optional embodiments, the first flow channel opening and the second flow channel opening are aligned by the valve plate connecting piece in the straight line direction and in a horizontal direction perpendicular to the straight line direction.

[0012] In some alternative embodiments, the valve plate connector has a ring-like structure, a side of the valve plate connector close to the first fixed valve plate has a shape matching the outer edge of the first fixed valve plate, and a side of the valve plate connector close to the second fixed valve plate has a shape matching the outer edge of the second fixed valve plate; the valve plate connector, the first fixed valve plate and the second fixed valve plate are fixedly connected through the positioning member to define the relative position between the first flow passage opening and the second flow passage opening.

[0013] In some alternative embodiments, the positioning member is integrally formed with the valve plate connector;

[0014] Alternatively, the positioning member is integrally formed with the first fixed valve plate and the second fixed valve plate;

[0015] Alternatively, the positioning member on one side of the valve plate connector is integrally formed with the first fixed valve plate or the second fixed valve plate, and the positioning member on the other side of the valve plate connector is integrally formed with the valve plate connector.

[0016] In some alternative embodiments, the outer edge of the first fixed valve plate connected with the valve plate connector has a first step portion for mounting the valve plate connector, and the positioning member for positioning the first fixed valve plate and the valve plate connector is fixed on the first step portion;

[0017] The outer edge of the second fixed valve plate connected with the valve plate connector has a second step portion for mounting the valve plate connector, and the positioning member for positioning the second fixed valve plate and the valve plate connector is fixed on the second step portion.

[0018] In some alternative embodiments, the valve plate connector is a valve plate positioning pin, the first fixed valve plate is provided with a first valve plate positioning hole, the second fixed valve plate is provided with a second valve plate positioning hole, and the valve plate positioning pin is connected with the first valve plate positioning hole and the second valve plate positioning hole at two ends thereof respectively;

[0019] The first fixed valve plate and the second fixed valve plate are arranged in the cavity of the valve seat and are jointly constrained by the valve seat and the valve plate positioning pin to define the relative position between the first flow passage opening and the second flow passage opening;

[0020] Alternatively, the valve device further comprises a reduction gearbox seat arranged in the valve seat, the first fixed valve plate and the second fixed valve plate are arranged in the cavity of the reduction gearbox seat and are jointly constrained by the reduction gearbox seat and the positioning member to define the relative position between the first flow passage opening and the second flow passage opening.

[0021] In some optional embodiments, the first valve plate, the second valve plate and the valve plate connector are integrally formed, and the first valve plate, the second valve plate and the valve plate connector have a projection shape of a "Fang" shape in a first projection plane which is parallel to the straight line direction.

[0022] In some optional embodiments, the first valve plate and / or the second valve plate comprises a plurality of reinforcing ribs extending substantially along the radial direction thereof.

[0023] In some optional embodiments, part of the reinforcing ribs on the first valve plate extend through the first flow passage opening in the radial direction;

[0024] and / or, part of the reinforcing ribs on the second valve plate extend through the second flow passage opening in the radial direction.

[0025] In some optional embodiments, the first valve plate comprises:

[0026] a ring-shaped side wall extending away from the second valve plate in the first valve plate, and the ring-shaped side wall is provided with a plurality of side wall through holes in the circumferential direction for connecting the inner side and the outer side space of the ring-shaped side wall to allow fluid to pass through.

[0027] To achieve one of the above-mentioned purposes, an embodiment of the present application provides a heat management system comprising the valve device as described in any one of the above.

[0028] Compared with the conventional technology, the present application has the following beneficial effects: the first valve plate and the second valve plate are connected together by the valve plate connector to limit the relative position of the two in the valve seat, and further limit the relative position between the first flow passage opening and the second flow passage opening, so as to improve the flow control accuracy of the valve device, especially suitable for use in the heat management system of a new energy vehicle, and improve the performance and reliability of the entire heat management system. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the valve device provided by an embodiment of the present application;

[0030] Figure 2 is a schematic diagram of the internal structure of the valve device provided by an embodiment of the present application;

[0031] Figure 3 is a sectional view of the valve device provided by an embodiment of the present application;

[0032] Figure 4 is a sectional view of the valve device provided by another embodiment of the present application;

[0033] Figure 5 is a sectional view of the valve device provided by yet another embodiment of the present application;

[0034] Figure 6 is a structural schematic diagram of a first valve plate provided by an embodiment of the present application.

[0035] Legend of reference signs:

[0036] 100, valve device; 110, first valve plate; 111, first flow passage opening; 112, first surface; 115, first valve plate positioning hole; 117, first step portion; 118, reinforcing rib; 119, annular side wall; 1191, side wall through hole; 120, second valve plate; 121, second flow passage opening; 122, second surface; 124, second valve plate positioning hole; 128, second step portion; 130, moving part; 131, moving valve plate; 1311, first end surface; 1312, second end surface; 141, rotating shaft; 143, speed reducer box seat; 170, valve seat; 171, first interface; 172, second interface; 180, valve plate connecting piece; 181, valve plate positioning pin; 182, positioning piece; S1, first axis. DETAILED DESCRIPTION

[0037] The present application will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the present application, and any changes in structure, method, or function made by those of ordinary skill in the art based on these embodiments are included in the protection scope of the present application.

[0038] It should be understood that the terms such as "upper", "above", "lower", "below", and the like used herein to indicate spatial relative positions are used for the purpose of convenient description to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The spatial relative position terms can be intended to include different orientations of the device in use or in operation other than the orientation shown in the drawings.

[0039] First, the principle of the valve device 100 of the present application will be briefly described.

[0040] Referring to Figure 1 , an embodiment of the present application provides a valve device 100, which comprises a first flow passage opening 111 and a second flow passage opening 121, a fluid path is formed between the first flow passage opening 111 and the second flow passage opening 121, the first flow passage opening 111 and the second flow passage opening 121 are arranged apart in a straight line direction, and the valve device 100 further comprises:

[0041] A moving element 130 is driven to move along the straight line between the first flow passage port 111 and the second flow passage port 121 to at least partially close the first flow passage port 111 and open the second flow passage port 121, or at least partially close the second flow passage port 121 and open the first flow passage port 111, and the moving element 130 is also driven to rotate around the first axis S1 to adjust the opening size of the moving element 130 closing the corresponding flow passage port by changing the rotation angle.

[0042] It is known that the function of an expansion valve is to reduce the pressure of a fluid such as refrigerant and control the rate of flow into an evaporator. This is achieved by forming a throttling orifice in the expansion valve, which allows the high-pressure refrigerant to rapidly expand and partially evaporate when passing through the orifice, thereby achieving a cooling effect.

[0043] In the present application, the moving element 130 is driven to move between the first flow passage port 111 and the second flow passage port 121 to at least partially close the first flow passage port 111 and open the second flow passage port 121, or at least partially close the second flow passage port 121 and open the first flow passage port 111, and when the moving element 130 at least partially closes the flow passage port, the throttling orifice is formed, and the fluid on the high-pressure side rapidly expands to the low-pressure side when passing through the orifice, resulting in a change in gas-liquid, thereby achieving a cooling effect.

[0044] At the same time, the size of the throttling orifice is adjusted by driving the moving element 130 to rotate, thereby controlling the flow rate through the throttling orifice, and the size of the throttling orifice is adjusted as needed to optimize the refrigeration effect.

[0045] The valve device 100 of the present application can achieve the function of an expansion valve and solve the problem of bidirectional flow of fluid, and is particularly suitable for use in a thermal management system of a new energy vehicle.

[0046] In the present embodiment, the moving element 130 includes opposite first and second end surfaces 1311 and 1312, the moving element 130 abuts against the first surface 112 through the first end surface 1311 when in the first position, and the moving element 130 abuts against the second surface 122 through the second end surface 1312 when in the second position, the first and second end surfaces 1311 and 1312, the first and second surfaces 112 and 122 are all planar and any two of them are parallel to each other.

[0047] Since the first end surface 1311 and the second end surface 1312 of the moving element 130 are planar and parallel to each other, and the first surface 112 and the second surface 122 are also planar and parallel to each other, when the moving element 130 abuts against the corresponding surface at different positions, the parallel and close contact between the end surface of the moving element 130 and the corresponding surface can help to form a better sealing effect, so that the abutment of the moving element 130 is more close, thereby preventing fluid leakage. At the same time, the planar and parallel design simplifies the machining and manufacturing process of the parts, and facilitates the later maintenance and replacement.

[0048] In the embodiment, the moving element 130 is provided with a flow-through part to provide fluid passing through the moving element 130; when the moving element 130 abuts against the first surface 112, the projection of the flow-through part on the first surface 112 at least partially coincides with the first flow passage opening 111, and the coincident area is the open cross-sectional area of the first flow passage opening 111; when the moving element 130 abuts against the second surface 122, the projection of the flow-through part on the second surface 122 at least partially coincides with the second flow passage opening 121, and the coincident area is the open cross-sectional area of the second flow passage opening 121.

[0049] The flow-through part on the moving element 130 can selectively guide the fluid to the first flow passage opening 111 or the second flow passage opening 121 according to the change of the position of the moving element 130 relative to the first surface 112 or the second surface 122. At the same time, when the moving element 130 abuts against a surface, the opening size formed by the flow-through part and the corresponding flow passage opening directly determines the flow rate of the fluid. By precisely controlling the position of the moving element 130, the coincident area of the flow-through part and the flow passage opening can be adjusted, thereby realizing the precise adjustment of the flow rate and the throttling effect.

[0050] The above is a principle description of the valve device 100 of the present application. In the valve device 100, how to limit the relative position between the first flow passage opening 111 and the second flow passage opening 121 is a technical problem necessary to be solved to improve the flow control accuracy of the valve device 100.

[0051] Referring to Figure 2 and Figure 3 , Figure 2 is a schematic view of the internal structure of the valve device 100 provided by an embodiment of the present application, Figure 3 is a sectional view of the valve device 100 provided by an embodiment of the present application;

[0052] In the embodiment, the valve device 100 comprises:

[0053] a valve seat 170, the valve seat 170 having a first interface 171 and a second interface 172 connected to the external flow path;

[0054] The first fixed valve plate 110 is provided with a first flow passage opening 111 which is communicated with the first interface 171.

[0055] The second fixed valve plate 120 is provided with a second flow passage opening 121 which is communicated with the second interface 172. The first fixed valve plate 110 and the second fixed valve plate 120 are arranged in the valve seat 170 and are apart from each other in the straight line direction. The first flow passage opening 111 and the second flow passage opening 121 form a fluid path therebetween.

[0056] The valve plate connecting member 180 connects the first fixed valve plate 110 and the second fixed valve plate 120 to define the relative position between the first flow passage opening 111 and the second flow passage opening 121.

[0057] The straight line direction is also the main flow direction of the fluid in the valve seat 170, which can be understood as the main flow direction of the fluid in the valve device 100.

[0058] The first fixed valve plate 110 and the second fixed valve plate 120 are respectively provided with the first flow passage opening 111 and the second flow passage opening 121. The flow passage openings are fixed relative to the positions of the fixed valve plates. Therefore, the relative position between the first flow passage opening 111 and the second flow passage opening 121 can be defined by fixing the relative position of the first fixed valve plate 110 and the second fixed valve plate 120. In this embodiment, the first fixed valve plate 110 and the second fixed valve plate 120 are connected together by the valve plate connecting member 180 to define the relative position therebetween, and further define the relative position between the first flow passage opening 111 and the second flow passage opening 121.

[0059] When the relative position between the first flow passage opening 111 and the second flow passage opening 121 is clear, the rotation of the moving part 130 can be accurately controlled to adjust the size of the corresponding throttle opening.

[0060] In this embodiment, the moving part 130 is a dynamic valve plate 131.

[0061] Specifically, the valve device 100 further comprises a dynamic valve plate 131 which is located between the first fixed valve plate 110 and the second fixed valve plate 120. The moving part 130 is formed by the dynamic valve plate 131. The dynamic valve plate 131 moves along the straight line direction towards the first fixed valve plate 110 or the second fixed valve plate 120 under the pressure of the fluid to abut against the first surface 112 or the second surface 122.

[0062] The end faces of the first fixed valve plate 110 and the second fixed valve plate 120 are respectively used as the first surface 112 and the second surface 122.

[0063] The movable valve plate 131 is located between the first fixed valve plate 110 and the second fixed valve plate 120 and forms the moving part 130 with them. The movable valve plate 131 can move in the linear direction under the pressure of the fluid, towards the first fixed valve plate 110 or the second fixed valve plate 120, to abut against the first surface 112 or the second surface 122, so that the movable valve plate 131 can automatically adjust its position according to the change of the fluid pressure, to realize the adjustment of the flow direction.

[0064] In the embodiment, four kinds of valve plate connecting pieces 180 are provided to connect the first fixed valve plate 110 and the second fixed valve plate 120, which can all meet the requirement of defining the relative position between the first flow port 111 and the second flow port 121.

[0065] In the first implementation, referring to Figure 2 and Figure 3 , the first flow port 111 and the second flow port 121 are aligned by the valve plate connecting piece 180 in the linear direction and the horizontal direction perpendicular to the linear direction.

[0066] The first fixed valve plate 110 and the second fixed valve plate 120 are kept in the aligned state in the linear direction and the horizontal direction by the separate valve plate connecting piece 180.

[0067] Specifically, the valve plate connecting piece 180 has a ring structure, the side close to the first fixed valve plate 110 of the valve plate connecting piece 180 has a shape matching the outer edge of the first fixed valve plate 110, and the side close to the second fixed valve plate 120 of the valve plate connecting piece 180 has a shape matching the outer edge of the second fixed valve plate 120; the valve plate connecting piece 180 and the first fixed valve plate 110 and the second fixed valve plate 120 are fixedly connected by the positioning piece 182 to define the relative position between the first flow port 111 and the second flow port 121.

[0068] The valve plate connecting piece 180 has a shape matching the outer edge of the first fixed valve plate 110 on the side close to the first fixed valve plate 110, and also has a shape matching the outer edge of the second fixed valve plate 120 on the side close to the second fixed valve plate 120, which ensures the close combination and accurate positioning of the valve plate connecting piece 180 with the first fixed valve plate 110 and the second fixed valve plate 120, and the fixed connection of the positioning piece 182 ensures the accurate positional relationship between the valve plate connecting piece 180 and the two fixed valve plates, which cooperates to accurately fix the first fixed valve plate 110 and the second fixed valve plate 120.

[0069] As an example, the valve plate connecting member 180 is designed as a groove near one side of the first fixed valve plate 110, and the shape of the groove (such as the inner edge of a circle) is completely matched with the outer edge shape of the first fixed valve plate 110. By means of the positioning member 182 (such as a pin, buckle, block, etc.), the valve plate connecting member 180 is fixedly connected with the two fixed valve plates, so as to ensure that the valve plate does not displace relatively during operation. When the valve plate connecting member 180 is in contact with and fixed to the first fixed valve plate 110, the sealing and accurate alignment between the two can be ensured. Similarly, when the valve plate connecting member 180 is in contact with and fixed to the second fixed valve plate 120, the sealing and accurate alignment between the two can be ensured, thereby accurately defining the relative position between the first flow passage opening 111 and the second flow passage opening 121.

[0070] In the embodiment, the positioning member 182 is integrally formed with the valve plate connecting member 180;

[0071] Alternatively, the positioning member 182 is integrally formed with the first fixed valve plate 110 and the second fixed valve plate 120;

[0072] Alternatively, the positioning member 182 on one side of the valve plate connecting member 180 is integrally formed with the first fixed valve plate 110 or the second fixed valve plate 120, and the positioning member 182 on the other side is integrally formed with the valve plate connecting member 180.

[0073] The positioning member 182 and the valve plate connecting member 180 have various combinations, and the integrally formed positioning member 182 can provide higher structural stability, while reducing the number of assembly steps and components required, simplifying the production and installation process.

[0074] In a preferred embodiment, the outer edge of the first fixed valve plate 110 connected with the valve plate connecting member 180 has a first step portion 117 for mounting the valve plate connecting member 180, and the positioning member 182 for positioning the first fixed valve plate 110 and the valve plate connecting member 180 is fixed to the first step portion 117;

[0075] The outer edge of the second fixed valve plate 120 connected with the valve plate connecting member 180 has a second step portion 128 for mounting the valve plate connecting member 180, and the positioning member 182 for positioning the second fixed valve plate 120 and the valve plate connecting member 180 is fixed to the second step portion 128.

[0076] Specific step portions are provided at the outer edges of the first fixed valve plate 110 and the second fixed valve plate 120, which provide a protruding part for mounting the valve plate connecting member 180. The valve plate connecting member 180 can be accurately mounted at the predetermined position of the first fixed valve plate 110 and the second fixed valve plate 120 by cooperating with the step portions.

[0077] The fixing position of the positioning member 182 is also arranged on the stepped portion. When the first fixed valve plate 110, the second fixed valve plate 120 and the valve plate connecting member 180 are fixed, the positioning member 182 is embedded into the first fixed valve plate 110, the second fixed valve plate 120 or the valve plate connecting member 180, so as to ensure the fixing and positioning between the valve plate connecting member 180 and the valve plate.

[0078] Through the accurate design of the stepped portion, the relative position between the valve plate connecting member 180 and the valve plate can be ensured to be more accurate, the assembly error is reduced, and the assembly process is simplified and the time required for assembly is reduced.

[0079] In the second implementation, the relative position between the first flow port 111 and the second flow port 121 is defined by the valve seat 170 and the valve plate positioning pin 181 or the reduction gear box seat 143 and the valve plate positioning pin 181.

[0080] Specifically, the valve plate connecting member 180 is a valve plate positioning pin 181, the first fixed valve plate 110 is provided with a first valve plate positioning hole 115, the second fixed valve plate 120 is provided with a second valve plate positioning hole 124, and the valve plate positioning pin 181 is connected to the first valve plate positioning hole 115 and the second valve plate positioning hole 124 at both ends respectively.

[0081] The first fixed valve plate 110 and the second fixed valve plate 120 are arranged in the cavity of the valve seat 170, and the relative position between the first flow port 111 and the second flow port 121 is defined by the constraint of the valve seat 170 and the valve plate positioning pin 181.

[0082] Or, the valve device 100 further comprises a reduction gear box seat 143 arranged in the valve seat 170, the first fixed valve plate 110 and the second fixed valve plate 120 are arranged in the cavity of the reduction gear box seat 143, and the relative position between the first flow port 111 and the second flow port 121 is defined by the constraint of the reduction gear box seat 143 and the positioning member 182.

[0083] Referring to Figure 4 , Figure 4 is a sectional view of the valve device 100 provided by another embodiment of the present application.

[0084] When the valve plate positioning pin 181 is used to limit the first fixed valve plate 110 and the second fixed valve plate 120, the installation position of the first fixed valve plate 110 is determined first, the first fixed valve plate 110 is installed into the reduction box seat 143, then the fixed valve plate positioning pin 181 is installed, the valve plate positioning pin 181 is aligned with the first valve plate positioning hole 115 on the first fixed valve plate 110, finally the second fixed valve plate 120 is installed, the second fixed valve plate 120 is provided with the second valve plate positioning hole 124, and is installed after being aligned with the fixed valve plate positioning pin 181, so that the relative position of the first flow channel opening 111 and the second flow channel opening 121 is fixed under the joint action of the reduction box seat 143 and the valve plate positioning pin 181. The valve plate positioning pin 181 is retained in the valve device 100 thereafter, and therefore the installation position of the valve plate positioning pin 181 needs to avoid the rotation range of the movable valve plate 131.

[0085] Similarly, when the reduction box seat 143 is not needed, the fixed valve plate can be directly installed in the valve seat 170, and the specific installation steps are not described here.

[0086] In the third implementation manner, the first fixed valve plate 110 and the second fixed valve plate 120 are directly formed in one piece.

[0087] Specifically, the first fixed valve plate 110, the second fixed valve plate 120 and the valve plate connecting piece 180 are formed in one piece, and the projection shape of the first fixed valve plate 110, the second fixed valve plate 120 and the valve plate connecting piece 180 on the first projection plane is generally "∴" shape, and the first projection plane is a plane parallel to the straight line direction.

[0088] Compared with the second implementation manner, the third implementation manner forms the fixed valve plate in one piece, and the first flow channel opening 111 and the second flow channel opening 121 are fixed in the straight line direction. Figure 5 , Figure 5 is a sectional view of the valve device 100 provided by another embodiment of the present application. In the assembly process of the valve device 100, the fixed valve plate, the movable valve plate 131 and the rotating shaft 141 are installed first, and then are installed as a whole into the valve device 100, so that the installation is simple, and because the fixed valve plate is formed in one piece, the positioning precision of the first flow channel opening 111 and the second flow channel opening 121 relative to each other is high.

[0089] In the fourth implementation manner, the first fixed valve plate 110 and the second fixed valve plate 120 are limited in the circumferential direction through a non-circular cross section, and are limited in the straight line direction through a separate valve plate connecting piece 180, or a stepped portion of the inner wall of the valve seat 170, or a stepped portion of the inner wall of the reduction box seat 143.

[0090] Specifically, the first valve plate 110 and the second valve plate 120 are arranged in the chamber of the valve seat 170, the chamber of the valve seat 170 has a non-circular cross section, and the first valve plate 110 and the second valve plate 120 have outer edges matching the chamber of the valve seat 170; or, the valve device 100 further comprises a reduction gearbox seat 143 arranged in the valve seat 170, the first valve plate 110 and the second valve plate 120 are arranged in the chamber of the reduction gearbox seat 143, the chamber of the reduction gearbox seat 143 has a non-circular cross section, and the first valve plate 110 and the second valve plate 120 have outer edges matching the chamber of the reduction gearbox seat 143.

[0091] The valve plate connecting piece 180 is arranged between the first valve plate 110 and the second valve plate 120 to separate the first valve plate 110 and the second valve plate 120 in the straight line direction; or, the first valve plate 110 and the second valve plate 120 have different cross-sectional sizes, and the projection of the mounting plane of the first valve plate 110 in the straight line direction is arranged apart from the projection of the mounting plane of the second valve plate 120 in the straight line direction.

[0092] The mounting plane refers to the plane where the mounting position of the corresponding valve plate in the reduction gearbox seat 143 or the valve seat 170 is located, and the projection of the mounting plane in the straight line direction is a point or a line segment. The first valve plate 110 and the second valve plate 120 have different cross-sectional sizes, and the projection of the mounting plane of the first valve plate 110 in the straight line direction is arranged apart from the projection of the mounting plane of the second valve plate 120 in the straight line direction, which means that the inner wall of the reduction gearbox seat 143 or the inner wall of the valve seat 170 is conical, or the mounting position of the corresponding valve plate is provided with a mounting part, so that there is a certain interval between the two in the straight line direction.

[0093] The four embodiments above provide valve plate connecting pieces 180 that can connect the first valve plate 110 and the second valve plate 120 and meet the requirement of limiting the relative position between the first flow channel port 111 and the second flow channel port 121. In addition, some simple changes based on the above structure can also meet the requirement, which will not be described here.

[0094] In the present embodiment, in order to place the first valve plate 110 and the second valve plate 120 for a long time under pressure and other reasons causing structural deformation, a reinforcing structure of the first valve plate 110 and / or the second valve plate 120 is further provided.

[0095] Specifically, the first valve plate 110 and / or the second valve plate 120 comprise a plurality of reinforcing ribs 118 extending substantially along the radial direction thereof.

[0096] The reinforcing ribs 118 are arranged on the side of the fixed valve plate away from the movable valve plate 131.

[0097] Referring to Figure 6 , Figure 6 is a structural schematic diagram of the first fixed valve plate 110 according to an embodiment of the present application.

[0098] The first fixed valve plate 110 is provided with a plurality of reinforcing ribs 118 on the side away from the movable valve plate 131. The reinforcing ribs 118 extend substantially along the radial direction of the valve plate. The use of the reinforcing ribs 118 improves the structural stability of the valve plate and reduces deformation caused by pressure during long-term operation. At the same time, the reinforcing ribs 118 help to maintain the flatness of the abutting surface of the fixed valve plate and the movable valve plate 131, which plays an important role in the sealing between the fixed valve plate and the movable valve plate 131.

[0099] In this embodiment, part of the reinforcing ribs 118 on the first fixed valve plate 110 extend through the first flow passage opening 111 in the radial direction;

[0100] And / or, part of the reinforcing ribs 118 on the second fixed valve plate 120 extend through the second flow passage opening 121 in the radial direction.

[0101] The reinforcing ribs 118 extending through the flow passage opening can significantly improve the pressure resistance of the flow passage opening and prevent deformation or damage of the flow passage opening due to stress concentration when high-pressure fluid passes through. Since the reinforcing ribs 118 can withstand more stress, they help to prolong the service life of the fixed valve plate.

[0102] The cross section of the part of the reinforcing ribs 118 extending through the flow passage opening is generally rhombus-shaped, with the two opposite vertices of the rhombus pointing in the forward and reverse directions of the flow in the flow passage, respectively. That is, the reinforcing ribs 118 at the position of the flow passage opening also serve as fluid guides. As is known, a rhombus-shaped cross section provides greater bending and torsional resistance than a circular or rectangular cross section, thus more effectively enhancing the structural strength of the flow passage opening, and the rhombus-shaped arrangement allows the reinforcing ribs 118 to guide the fluid to flow more smoothly at the flow passage opening, reducing the formation of turbulent or vortex flow.

[0103] Continuing to refer to Figure 6 In this embodiment, the first fixed valve plate 110 includes a ring-shaped side wall 119 extending in a direction away from the second fixed valve plate 120, and the ring-shaped side wall 119 is provided with a plurality of side wall through holes 1191 in the circumferential direction for connecting the inner and outer spaces of the ring-shaped side wall 119 to allow fluid to pass through.

[0104] The annular side wall structure can provide the first valve plate 110 with additional strength and stability. Meanwhile, the annular side wall 119 is uniformly provided with a plurality of circular side wall through holes 1191 in the circumferential direction, so that fluid can flow from any position of the outer side space of the annular side wall 119 into the inner side space, or from any position of the inner side space into the outer side space, realizing the communication of the fluid and smooth flow.

[0105] In addition, the utility model embodiment further provides a vehicle thermal management system, which is provided with the valve device 100 described above.

[0106] It should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the specification is described in this way only for clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

[0107] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and are not used to limit the protection scope of the present application, and equivalent embodiments or changes made without departing from the spirit of the present application should be included in the protection scope of the present application.

Claims

1. A valve device comprising a valve seat having a first interface and a second interface connecting an external flow path, characterized by, The valve device further comprises: a first fixed valve plate, which is provided with a first flow passage opening, and which is in communication with the first interface; a second fixed valve plate, which is provided with a second flow passage opening, and which is in communication with the second interface, the first fixed valve plate and the second fixed valve plate are arranged in the valve seat and are apart from each other in a straight line direction, and a fluid path is formed between the first flow passage opening and the second flow passage opening; a valve plate connecting member, which is connected to the first fixed valve plate and the second fixed valve plate respectively, so as to define the relative position between the first flow passage opening and the second flow passage opening.

2. The valve device according to claim 1, characterized in that The first flow passage opening and the second flow passage opening are aligned by the valve plate connecting member in the straight line direction and in a horizontal direction perpendicular to the straight line direction.

3. The valve device of claim 2, wherein The valve plate connecting member has a ring structure, one side of the valve plate connecting member close to the first fixed valve plate has a shape matched with the outer edge of the first fixed valve plate, and the other side of the valve plate connecting member close to the second fixed valve plate has a shape matched with the outer edge of the second fixed valve plate; the valve plate connecting member, the first fixed valve plate and the second fixed valve plate are fixedly connected by a positioning member, so as to define the relative position between the first flow passage opening and the second flow passage opening.

4. The valve device of claim 3, wherein The positioning member is integrally formed with the valve plate connecting member; alternatively, the positioning member is integrally formed with the first fixed valve plate and the second fixed valve plate; alternatively, one side of the positioning member of the valve plate connecting member is integrally formed with the first fixed valve plate or the second fixed valve plate, and the other side of the positioning member is integrally formed with the valve plate connecting member.

5. The valve device of claim 3, wherein The outer edge of the first fixed valve plate connected with the valve plate connecting member has a first step portion, which is used for mounting the valve plate connecting member, and the positioning member for positioning the first fixed valve plate and the valve plate connecting member is fixed on the first step portion; The outer edge of the second fixed valve plate connected with the valve plate connecting member has a second step portion, which is used for mounting the valve plate connecting member, and the positioning member for positioning the second fixed valve plate and the valve plate connecting member is fixed on the second step portion.

6. The valve device of claim 3, wherein The valve plate connecting member is a valve plate positioning pin, the first fixed valve plate is provided with a first valve plate positioning hole, the second fixed valve plate is provided with a second valve plate positioning hole, and the valve plate positioning pin is connected to the first valve plate positioning hole and the second valve plate positioning hole at two ends respectively; The first fixed valve plate and the second fixed valve plate are arranged in the cavity of the valve seat, and the relative position between the first flow passage opening and the second flow passage opening is defined under the constraint of the valve seat and the valve plate positioning pin; alternatively, the valve device further comprises a reduction box seat arranged in the valve seat, the first fixed valve plate and the second fixed valve plate are arranged in the cavity of the reduction box seat, and the relative position between the first flow passage opening and the second flow passage opening is defined under the constraint of the reduction box seat and the positioning member.

7. The valve device of claim 1, wherein The first fixed valve plate, the second fixed valve plate and the valve plate connecting piece are integrally formed, and the first fixed valve plate, the second fixed valve plate and the valve plate connecting piece have a projection shape of a "∴" shape on a first projection plane, the first projection plane being a plane parallel to the linear direction.

8. The valve device of claim 1, wherein The first fixed valve plate and the second fixed valve plate are arranged in a chamber of the valve seat, the chamber of the valve seat having a non-circular cross section, and the first fixed valve plate and the second fixed valve plate have outer edges matching the chamber of the valve seat; or the valve device further comprises a reduction gearbox seat arranged in the valve seat, the first fixed valve plate and the second fixed valve plate are arranged in a chamber of the reduction gearbox seat, the chamber of the reduction gearbox seat having a non-circular cross section, and the first fixed valve plate and the second fixed valve plate have outer edges matching the chamber of the reduction gearbox seat. The first fixed valve plate and the second fixed valve plate are arranged in a chamber of the valve seat, the chamber of the valve seat having a non-circular cross section, and the first fixed valve plate and the second fixed valve plate have outer edges matching the chamber of the valve seat; or the valve device further comprises a reduction gearbox seat arranged in the valve seat, the first fixed valve plate and the second fixed valve plate are arranged in a chamber of the reduction gearbox seat, the chamber of the reduction gearbox seat having a non-circular cross section, and the first fixed valve plate and the second fixed valve plate have outer edges matching the chamber of the reduction gearbox seat.

9. The valve device of claim 1, wherein The first fixed valve plate and / or the second fixed valve plate comprises a plurality of reinforcing ribs extending in a radial direction thereof.

10. The valve device of claim 9, wherein Part of the reinforcing ribs on the first fixed valve plate extend through the first flow passage opening in the radial direction; And / or part of the reinforcing ribs on the second fixed valve plate extend through the second flow passage opening in the radial direction.

11. The valve device of claim 1, wherein The first fixed valve plate comprises: A ring-shaped side wall extending away from the second fixed valve plate in the first fixed valve plate, and a plurality of side wall through holes are formed in the circumferential direction of the ring-shaped side wall, for connecting the inner side space and the outer side space of the ring-shaped side wall to allow fluid to pass through.

12. A thermal management system characterized by, The valve device as claimed in any one of claims 1-11.

Images