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 body and a valve core assembly, the valve body is provided with a plurality of external interfaces, and the valve core assembly comprises a first fixed valve plate, a second fixed valve plate and a third fixed valve plate; the second fixed valve plate is provided with a second flow channel opening, and the first fixed valve plate and the second fixed valve plate are arranged at an interval in the linear direction; the movable valve piece is arranged between the first fixed valve plate and the second fixed valve plate, the movable valve piece can be driven to abut against the first fixed valve plate or the second fixed valve plate, and the movable valve piece is provided with a circulation part; the circulation part can be matched with the first flow channel opening to form a first throttling opening or matched with the second flow channel opening to form a second throttling opening; the movable valve piece can also be driven to rotate around the first axis. According to the valve device, the flowing part of the movable valve piece is matched with the first fixed valve plate or the second fixed valve plate, the flow of fluid can be accurately controlled, and the adjusting precision and the response speed of the valve device are improved.

Description

[0001] The present application is based on the Chinese patent application No. 202410174480.7, filed on February 7, 2024, and claims the priority of the Chinese patent application No. 202410174480.7, the whole content of which is incorporated herein by reference. TECHNICAL FIELD

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

[0003] The thermal management system of a new energy vehicle is crucial to the performance and safety of the vehicle. As a key component in the thermal management system, the performance of an electronic expansion valve directly affects the efficiency and reliability of the entire thermal management system.

[0004] The conical needle type electronic expansion valve is a widely used expansion valve structure. By controlling the rotation of the stator of the stepper motor to drive the rotor in the valve body, the rotor drives the conical needle to move up and down through the gear to realize the increase or decrease of the flow control. However, the conical needle type electronic expansion valve moves up and down, which means that the moving range of the valve needle is limited, which will limit its flow regulation capacity. At the same time, since the rotor rotates to drive the conical needle to move up and down, the moving speed of the conical needle is slow, which will result in a long time to open and close the valve, and cannot meet the rapid response requirement.

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

[0006] The present application aims to provide a valve device and a thermal management system different from the conical needle type electronic expansion valve.

[0007] In a first aspect, an embodiment of the present application provides a valve device, comprising a valve body and a valve core assembly arranged in the valve body, the valve body having a plurality of external interfaces, a fluid path formed between the plurality of external interfaces and passing through the valve core assembly, the valve core assembly comprising:

[0008] a first fixed valve plate, the first fixed valve plate being provided with a first flow passage opening;

[0009] a second fixed valve plate, the second fixed valve plate being provided with a second flow passage opening, the first fixed valve plate and the second fixed valve plate being arranged apart in a straight line direction, the first flow passage opening and the second flow passage opening being located on the fluid path;

[0010] A moving valve member is arranged between the first and second valve plates and can be driven to abut against the first or second valve plate. The moving valve member is provided with a flow passage for fluid to pass through. The flow passage can cooperate with the first flow passage to form a first throttling opening or with the second flow passage to form a second throttling opening. The moving valve member can also be driven to rotate about the first axis to adjust the size of the first or second throttling opening by changing the rotation angle.

[0011] In some optional embodiments, the moving valve member comprises a first moving valve plate and a second moving valve plate arranged in a stacked manner. The first moving valve plate is closer to the first valve plate than the second moving valve plate. A limiting structure is arranged between the first and second moving valve plates to keep the first and second moving valve plates from rotating about the first axis synchronously.

[0012] In some optional embodiments, the flow passage comprises a first flow passage groove arranged on the first moving valve plate and a second flow passage groove arranged on the second moving valve plate.

[0013] The first flow passage groove is arranged on a side of the first moving valve plate away from the first valve plate.

[0014] The second flow passage groove is arranged on a side of the second moving valve plate away from the second valve plate.

[0015] The width of the first flow passage groove gradually decreases along a direction towards the first valve plate. The bottom wall of the first flow passage groove is provided with a first through opening extending through the first moving valve plate. The first through opening is in the shape of an elongated slit.

[0016] The width of the second flow passage groove gradually decreases along a direction towards the second valve plate. The bottom wall of the second flow passage groove is provided with a second through opening extending through the second moving valve plate. The second through opening is in the shape of an elongated slit.

[0017] The fluid passes through the first throttling opening formed by the first through opening and the first flow passage or the second throttling opening formed by the second through opening and the second flow passage to exit the chamber in which the moving valve member is arranged.

[0018] In some optional embodiments, the depth of the first through opening is smaller than the depth of the first flow passage groove, and the first through opening extends in the rotation direction of the moving valve member. The depth of the second through opening is smaller than the depth of the second flow passage groove, and the second through opening extends in the rotation direction of the moving valve member.

[0019] In some alternative embodiments, the first and second dynamic valve plates are substantially in the shape of a fan-shaped column, the first flow channel has a first side opening disposed on a side surface of the first dynamic valve plate, and the fluid can enter the first flow channel through the first side opening; the second flow channel has a second side opening disposed on a side surface of the second dynamic valve plate, and the fluid can enter the second flow channel through the second side opening.

[0020] In some alternative embodiments, the flow passage includes a first flow channel disposed on a side surface of the dynamic valve member close to the first static valve plate, and a second flow channel disposed on a side surface of the dynamic valve member close to the second static valve plate, and the first and second flow channels are both inclined channels; along the rotation direction of the dynamic valve member, one side of the inclined channel is open, and cooperates with the first or second static valve plate to form a flow channel inlet, and after the fluid enters the inclined channel through the flow channel inlet, the fluid exits the cavity where the dynamic valve member is located through a throttling opening corresponding to the inclined channel.

[0021] In some alternative embodiments, the first flow channel includes a first channel section and a second channel section connected to the first channel section, the channel width of the first channel section is smaller than the channel width of the second channel section, the channel width of the second channel section gradually increases away from the first channel section, and the inclination of the first channel section is smaller than the inclination of the second channel section, wherein the inclination refers to the inclination of the channel bottom wall relative to the horizontal plane.

[0022] The second flow channel includes a third channel section and a fourth channel section connected to the third channel section, the channel width of the third channel section is smaller than the channel width of the fourth channel section, the channel width of the fourth channel section gradually increases away from the third channel section, and the inclination of the third channel section is smaller than the inclination of the fourth channel section.

[0023] In some alternative embodiments, the projections of the first and second flow channels on a first projection plane coincide, and the projections of the first and second flow channel inlets on the first projection plane coincide, and the first projection plane is a plane perpendicular to the first axis.

[0024] In some alternative embodiments, the flow passage is a dynamic valve plate through hole of the dynamic valve member, the dynamic valve plate through hole is formed with a dynamic valve plate flow channel for the fluid to flow through; the positive direction of rotation of the dynamic valve plate is defined as the direction in which the projection of the flow passage on the first or second static valve plate and the coincident area of the flow channel inlet thereof increase, and the cross-sectional width of the dynamic valve plate through hole gradually decreases along the positive direction of rotation.

[0025] To achieve one of the above-mentioned purposes, an embodiment of the present application provides a heat management system comprising the valve device according to any one of the above.

[0026] Compared with the conventional technology, the present application has the following beneficial effects: by matching the flow passage of the moving valve member with the first fixed valve plate or the second fixed valve plate, the flow rate of the fluid can be accurately controlled, and the moving valve member can rotate around the first axis, and by changing the rotation angle, the opening size of the corresponding throttle port is adjusted, so that the valve device can adjust the flow rate of the fluid as needed, and the adjustment accuracy and response speed of the valve device are improved. By rotating and moving the moving valve member, the limitation of the moving range of the traditional valve needle is broken, and the ability of the valve device to adjust the flow rate is improved, and the valve device is especially suitable for use in the heat management system of a new energy vehicle. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A structural schematic diagram of the valve device provided by an embodiment of the present application is shown in the figure;

[0028] Figure 2 A structural schematic diagram of the valve device provided by an embodiment of the present application is shown in the figure; Figure 1

[0029] Figure 3 A structural schematic diagram of the flow passage provided by an embodiment of the present application is shown in the figure;

[0030] Figure 4 A structural schematic diagram of the flow passage provided by another embodiment of the present application is shown in the figure;

[0031] Figure 5 A structural schematic diagram of the flow passage provided by another embodiment of the present application is shown in the figure;

[0032] Figure 6 A sectional structural schematic diagram of the valve device provided by an embodiment of the present application is shown in the figure;

[0033] Figure 7 A sectional structural schematic diagram of the valve device provided by an embodiment of the present application is shown in the figure; Figure 6

[0034] An exploded structural schematic diagram of the valve device provided by another embodiment of the present application is shown in the figure; Figure 8

[0035] A sectional structural schematic diagram of the valve device provided by another embodiment of the present application is shown in the figure; Figure 9

[0036] A structural schematic diagram of the first moving valve plate and the second moving valve plate provided by an embodiment of the present application is shown in the figure. Figure 10 Explanation of reference signs:

[0037]

[0038] ​​10, valve device; 20, valve body; 210, external interface; 30, valve core assembly; 310, fixed valve part; 311, first fixed valve plate; 3111, first flow passage opening; 312, second fixed valve plate; 3121, second flow passage opening; 320, movable valve part; 323, protruding part; 324, guiding part; 325, movable valve plate through hole; 326, movable valve plate through slot; 321, first movable valve plate; 3211, first flow passage slot; 3212, first through opening; 32111, first side opening; 32112, first slot section; 32113, second slot section; 322, second movable valve plate; 3221, second flow passage slot; 3222, second through opening; 32211, second side opening; 330, elastic part; 40, driving assembly; 410, driving device; 420, rotating shaft; 430, speed reducer seat; S1, first axis. DETAILED DESCRIPTION

[0039] The application will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments do not limit the application, and the changes made by those skilled in the art in structure, method, or function based on these embodiments are included in the protection scope of the application.

[0040] It should be understood that the terms such as "upper", "above", "lower", "below" and the like used herein to indicate spatial relative positions are for the purpose of facilitating 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.

[0041] Referring to Figure 1 and Figure 2 , Figure 1 a structural schematic view of a valve device 10 provided by an embodiment of the application, Figure 2 is Figure 1 a sectional schematic view of the valve device 10 shown; an embodiment of the application provides a valve device 10, which comprises a valve body 20 and a valve core assembly 30 arranged in the valve body 20, the valve body 20 has a plurality of external interfaces 210, a fluid path passing through the valve core assembly 30 is formed between the plurality of external interfaces 210, and the valve core assembly 30 comprises:

[0042] a first fixed valve plate 311, the first fixed valve plate 311 is provided with a first flow passage opening 3111;

[0043] a second fixed valve plate 312, the second fixed valve plate 312 is provided with a second flow passage opening 3121, the first fixed valve plate 311 and the second fixed valve plate 312 are arranged apart in a straight line direction, and the first flow passage opening 3111 and the second flow passage opening 3121 are both located on the fluid path;

[0044] A moving valve piece 320 is arranged between the first fixed valve plate 311 and the second fixed valve plate 312, and the moving valve piece 320 can be driven to abut against the first fixed valve plate 311 or the second fixed valve plate 312. The moving valve piece 320 is provided with a flow passage for fluid to pass through. The flow passage can cooperate with the first flow passage opening 3111 to form a first throttling opening, or cooperate with the second flow passage opening 3121 to form a second throttling opening. The moving valve piece 320 can also be driven to rotate about the first axis S1 to adjust the size of the opening of the first throttling opening or the second throttling opening by changing the rotation angle.

[0045] The flow passage opening is a channel prearranged on the fixed valve plate, and has a fixed size and shape. The flow passage is a part of the moving valve piece 320, which can be aligned or misaligned with the flow passage opening. When the flow passage is aligned with the flow passage opening, a corresponding throttling opening is formed, i.e., the flow passage at least partially closes the flow passage opening to form the corresponding throttling opening.

[0046] The position of the moving valve piece 320 can be adjusted by external driving (such as a motor). When the moving valve piece 320 is driven to rotate, the alignment between the flow passage and the flow passage opening changes, thereby changing the size of the throttling opening. The increase in the size of the throttling opening increases the fluid flow, and the decrease in the size of the throttling opening reduces the fluid flow. The cooperation between the flow passage and the flow passage opening allows the valve device 10 to dynamically adjust the fluid flow under different working conditions. For example, in a thermal management system, the flow of refrigerant can be adjusted according to the change in the cooling demand of the thermal management system to maintain the efficient operation of the thermal management system.

[0047] In the present embodiment, the flow passage includes a first flow passage groove 3211 arranged on the end face of the moving valve piece 320 close to the first fixed valve plate 311, and a second flow passage groove 3221 arranged on the end face of the moving valve piece 320 close to the second fixed valve plate 312. Both the first flow passage groove 3211 and the second flow passage groove 3221 are inclined grooves. Along the rotation direction of the moving valve piece 320, one side of the inclined groove is open, and cooperates with the first fixed valve plate 311 or the second fixed valve plate 312 to form a flow passage groove inlet. After the fluid enters the inclined groove through the flow passage groove inlet, the fluid exits the chamber where the moving valve piece 320 is located from the throttling opening corresponding to the inclined groove.

[0048] Referring to Figure 3 , Figure 3A structure schematic diagram of a flow passage provided by an embodiment of the present application; the first flow passage 3211 and the second flow passage 3221 are both inclined grooves, which means that they have a certain inclination angle along the axial direction of the moving valve 320. This inclined angle helps to generate certain dynamic effects when the fluid passes through, thereby optimizing the flow characteristics of the fluid and controlling the flow rate. One side of the inclined groove is open, and cooperates with the first fixed valve plate 311 or the second fixed valve plate 312 to form a flow passage inlet, so that the fluid can enter the flow passage through the flow passage inlet, then flow along the inclined direction of the inclined groove, and finally exit the chamber where the moving valve 320 is located from the throttle port corresponding to the inclined groove.

[0049] In this embodiment, the flow passage includes a two-section structure. The inclination of the first section of the inclined groove is smaller, and the size precision requirement is higher. In order to achieve accurate control of the flow rate, the inclination of the first section of the inclined groove is larger, and mainly plays a role in guiding the flow of the fluid, and the size precision requirement is lower.

[0050] Specifically, referring to Figure 3 , the first flow passage 3211 includes a first groove section 32112 and a second groove section 32113 connected thereto. The groove width of the first groove section 32112 is smaller than that of the second groove section 32113. The groove width of the second groove section 32113 gradually increases in a direction away from the first groove section 32112. The inclination of the first groove section 32112 is smaller than that of the second groove section 32113. The inclination refers to the inclination of the groove bottom wall relative to the horizontal plane.

[0051] The second flow passage 3221 includes a third groove section and a fourth groove section connected thereto. The groove width of the third groove section is smaller than that of the fourth groove section. The groove width of the fourth groove section gradually increases in a direction away from the third groove section. The inclination of the third groove section is smaller than that of the fourth groove section.

[0052] Thus, the fluid flowing in the flow passage is subjected to different degrees of resistance, achieving accurate control of the flow rate. The first groove section 32112 has a small groove width and a small inclination, achieving accurate control of the opening degree of the throttle port. The second groove section 32113 gradually enlarges the size of the flow passage by increasing the inclination and the groove width, to guide the flow of the fluid. Similarly, the third groove section and the fourth groove section also have the same effect. By optimizing the shape and size of the flow passage, the pressure loss of the fluid passing through the moving valve 320 can be reduced.

[0053] Further, the projection of the first flow passage 3211 and the second flow passage 3221 on the first projection plane coincides, and the projection of the first flow passage port 3111 and the second flow passage port 3121 on the first projection plane coincides. The first projection plane is a plane perpendicular to the first axis S1.

[0054] In other words, the first flow channel 3211 and the second flow channel 3221 are mirror-symmetric in space, and the first flow port 3111 and the second flow port 3121 are also mirror-symmetric in space, so that the same control parameters can be used to control the rotation of the movable valve 320 when it abuts against the first fixed valve plate 311 or the second fixed valve plate 312, simplifying the design and operation of the control system. Using the same control parameters means that the control system does not need to design different control logics for different positions of the movable valve 320 (different abutting objects), which can reduce the complexity of the control system and improve its reliability and maintenance convenience. In addition, the symmetrical design helps to reduce errors in the manufacturing and assembly process, as it ensures that the flow channels and flow ports on both sides have the same size and shape, thereby ensuring the consistency of fluid flow.

[0055] Referring to Figure 4 , Figure 4 The structure of the flow passage provided by another embodiment of the application is shown in the schematic diagram. In this embodiment, the flow passage is a movable valve plate through-hole 325 that penetrates the movable valve 320, and the movable valve plate through-hole 325 forms a movable valve plate flow channel for fluid flow. The positive direction of rotation of the movable valve plate is defined as the direction in which the projection of the flow passage on the first fixed valve plate 311 or the second fixed valve plate 312 increases the overlapping area with the flow port. The cross-sectional width of the movable valve plate through-hole 325 gradually decreases along the positive direction of rotation.

[0056] The movable valve plate through-hole 325 is a variant of the flow channel inclined groove described above. Fluid can enter the movable valve plate through-hole 325 through the opening on the side that is not in contact with the fixed valve plate, and then exit through the throttle formed by the other opening and the flow port. The cross-sectional width of the movable valve plate through-hole 325 refers to the width of the cross section formed by the plane perpendicular to the positive direction of rotation and the movable valve plate through-hole 325. The cross-sectional width of the movable valve plate through-hole 325 gradually decreases along the positive direction of rotation, allowing the flow rate of the fluid to be accurately controlled by changing the rotation angle of the movable valve plate. When the movable valve plate rotates such that the cross-sectional width of the movable valve plate through-hole 325 decreases, the overlapping area of the flow port of the movable valve plate through-hole 325 decreases, and the area through which the fluid passes decreases, thereby reducing the flow rate. Conversely, when the movable valve plate rotates such that the cross-sectional width of the movable valve plate through-hole 325 increases, the overlapping area of the flow port of the movable valve plate through-hole 325 increases, and the fluid flow rate increases.

[0057] In this embodiment, the cross-sectional shape of the movable valve plate 131 through-hole is crescent-shaped.

[0058] Further, referring to Figure 5 , Figure 5A structure diagram of a flow passage provided by another embodiment of the present application is shown in the figure. In this embodiment, the flow passage is a dynamic valve plate through slot 326 that penetrates the dynamic valve member 320, and the dynamic valve plate through slot 326 is formed with a dynamic valve plate flow channel for the fluid to flow through. The positive rotation direction of the dynamic valve plate is defined as the direction in which the projection of the flow passage on the first fixed valve plate 311 or the second fixed valve plate 312 has an increased area of overlap with the flow channel opening. The cross-sectional width of the dynamic valve plate through slot 326 gradually decreases along the positive rotation direction.

[0059] It can be understood that the dynamic valve plate through slot 326 is a variant embodiment of the dynamic valve plate through hole 325. The dynamic valve plate through hole 325 is opened on one side along the thickness direction of the dynamic valve plate, so that the fluid can enter the dynamic valve plate through hole 325 from the open side, i.e., the dynamic valve plate through slot 326. The specific technical effect is the same as that of the dynamic valve plate through hole 325, which will not be described here.

[0060] In some embodiments, in order to improve the stability of the abutment between the dynamic valve member 320 and the fixed valve plate, a separate dynamic valve plate is provided for each fixed valve plate, thereby avoiding the case where a single dynamic valve member 320 is selected between two fixed valve plates.

[0061] Specifically, referring to Figure 6 and Figure 7 , Figure 6 a cross-sectional structure diagram of a valve device 10 provided by an embodiment of the present application is shown in the figure, Figure 7 is Figure 6 a partial enlarged view of the dynamic valve member 320 in the figure. The dynamic valve member 320 includes a first dynamic valve plate 321 and a second dynamic valve plate 322 stacked one above the other. The first dynamic valve plate 321 is closer to the first fixed valve plate 311 than the second dynamic valve plate 322. A limiting structure is provided between the first dynamic valve plate 321 and the second dynamic valve plate 322 to keep the first dynamic valve plate 321 and the second dynamic valve plate 322 rotating synchronously around the first axis S1.

[0062] Among them, the first dynamic valve plate 123 can also be called the first sub-valve plate, and the second dynamic valve plate 124 can also be called the second sub-valve plate.

[0063] It can be understood that the dynamic valve member 320 shown in the above Figure 3 is divided into the first dynamic valve plate 321 and the second dynamic valve plate 322 along the middle position, and a limiting structure is provided between the first dynamic valve plate 321 and the second dynamic valve plate 322 to limit the relative position of the first dynamic valve plate 321 and the second dynamic valve plate 322 in the circumferential direction, thereby achieving synchronous rotation. Since each fixed valve plate has a corresponding dynamic valve plate, the problem of abutment failure that may exist when a single dynamic valve plate switches between the first fixed valve plate 311 and the second fixed valve plate 312 can be reduced.

[0064] Referring to Figures 8-10 , Figure 8 An exploded structural schematic view of a valve device 10 according to another embodiment of the present application is provided, Figure 9 A cross-sectional structural schematic view of a valve device 10 according to another embodiment of the present application is provided, Figure 10 A structural schematic view of a first movable valve plate 321 and a second movable valve plate 322 according to an embodiment of the present application is provided. The flow passage portion includes a first flow passage groove 3211 provided on the first movable valve plate 321 and a second flow passage groove 3221 provided on the second movable valve plate 322.

[0065] The first flow passage groove 3211 is provided on a side of the first movable valve plate 321 away from the first fixed valve plate 311.

[0066] The second flow passage groove 3221 is provided on a side of the second movable valve plate 322 away from the second fixed valve plate 312.

[0067] The groove width of the first flow passage groove 3211 gradually decreases in a direction approaching the first fixed valve plate 311. The groove bottom wall of the first flow passage groove 3211 is provided with a first through-opening 3212 penetrating the first movable valve plate 321. The first through-opening 3212 is in the shape of an elongated slit.

[0068] The groove width of the second flow passage groove 3221 gradually decreases in a direction approaching the second fixed valve plate 312. The groove bottom wall of the second flow passage groove 3221 is provided with a second through-opening 3222 penetrating the second movable valve plate 322. The second through-opening 3222 is in the shape of an elongated slit.

[0069] The fluid exits the chamber in which the movable valve member 320 is located through a first throttling opening formed by the cooperation of the first through-opening 3212 and the first flow passage port 3111, or a second throttling opening formed by the cooperation of the second through-opening 3222 and the second flow passage port 3121.

[0070] The width of the flow channel (the first flow channel 3211 and the second flow channel 3221) gradually decreases in the direction close to the valve plate, that is, a V-shaped cross section is formed, which helps to guide the fluid to the through port, so that the fluid can pass through the flow channel more smoothly, reducing turbulence and pressure loss, thereby improving the efficiency of fluid flow. The first through port 3212 and the second through port 3222 are provided at the bottom of the first flow channel 3211 and the second flow channel 3221, respectively, and both of them are in the form of an elongated gap, which is to provide precise throttling effect, so that the fluid can be controlled more carefully when passing through. The gap-shaped through port (the first through port 3212 and the second through port 3222) can achieve better flow regulation and pressure drop control in fluid dynamics. The through port in the form of an elongated gap can facilitate cooperation with the flow channel port to realize the function of the throttling port, and at the same time, the width and / or length of the through port can be adjusted to achieve precise control of the fluid flow.

[0071] The first flow channel 3211 is arranged on the side of the first movable valve plate 321 away from the first valve plate 311, and the second flow channel 3221 is arranged on the side of the second movable valve plate 322 away from the second valve plate 312, which means that the fluid enters the flow channel between the first movable valve plate 321 and the second movable valve plate 322, so that the flow direction of the fluid can be controlled more concentratedly, improving the control accuracy of the valve. From the perspective of force, the fluid entering the flow channel can generate pressure on the first movable valve plate 321 or the second movable valve plate 322, which can assist in pressing the first movable valve plate 321 or the second movable valve plate 322 tightly against the corresponding valve plate, helping to form a seal at the throttling port position and improving the sealing performance.

[0072] In this embodiment, in order to ensure that the through port and the flow channel port together constitute an opening (throttling port) for precise control of the flow, the width of the through port should be consistent.

[0073] Specifically, the width of the first through port 3212 is equal in the rotation direction of the movable valve member 320, and the width of the second through port 3222 is equal in the rotation direction of the movable valve member 320.

[0074] In this embodiment, the depth of the first through port 3212 is less than the depth of the first flow channel 3211, and the first through port 3212 extends in the rotation direction of the movable valve member 320; the depth of the second through port 3222 is less than the depth of the second flow channel 3221, and the second through port 3222 extends in the rotation direction of the movable valve member 320.

[0075] The depth of the through hole is less than the depth of the flow channel to reduce the pressure loss of the fluid. In actual manufacturing, the depth of the first through hole 3212 and the second through hole 3222 is reduced as much as possible to minimize the loss of fluid pressure while ensuring the structural strength of the through hole. The first through hole 3212 and the second through hole 3222 extend in the rotation direction, the fluid remains continuous and stable when entering and leaving the flow channel, reduces the turbulence of fluid dynamics, thereby reducing the pressure loss, and can provide different flow adjustment ranges at different rotation angles.

[0076] In the embodiment, the first valve plate 321 and the second valve plate 322 are generally fan-shaped columnar structures, the first flow channel 3211 has a first side opening 32111 arranged on a side surface of the first valve plate 321, and the fluid can enter the first flow channel 3211 through the first side opening 32111; the second flow channel 3221 has a second side opening 32211 arranged on a side surface of the second valve plate 322, and the fluid can enter the second flow channel 3221 through the second side opening 32211.

[0077] The first valve plate 321 and the second valve plate 322 are generally fan-shaped columnar structures, and side openings are arranged for the first flow channel 3211 and the second flow channel 3221 respectively. The fluid can directly enter the flow channel through the side openings arranged on the side surface of the valve plate. This direct entry mode can reduce fluid disturbance and provide smoother fluid transition, thereby reducing energy loss. At the same time, the fan-shaped columnar structure of the valve plate can provide better structural stability and strength, so that the valve is more reliable when subjected to high-pressure fluid.

[0078] Further, the projections of the first flow channel 3211 and the second flow channel 3221 on the first projection plane coincide, the projections of the first through hole 3212 and the second through hole 3222 on the first projection plane coincide, and the projections of the first flow channel opening 3111 and the second flow channel opening 3121 on the first projection plane coincide. The first projection plane is a plane perpendicular to the first axis S1.

[0079] That is, the first flow channel 3211 and the second flow channel 3221 are mirror-symmetric in space, the first through hole 3212 and the second through hole 3222 are mirror-symmetric in space, and the first flow channel opening 3111 and the second flow channel opening 3121 are also mirror-symmetric in space. The technical effect of such arrangement is the same as the above-mentioned symmetrical arrangement effect, which will not be described here.

[0080] Further, an elastic member 330, such as a spring, rubber pad, or the like, is arranged between the first and second movable valve plates 321 and 322 to enhance the stability of the abutment between the movable valve plates and the fixed valve plates.

[0081] It can be understood that the elastic member 330 can exert an elastic force on the first movable valve plate 321 to move toward the first fixed valve plate 311 and on the second movable valve plate 322 to move toward the second fixed valve plate 312. When fluid enters the valve core assembly 30, the elastic member 330 can buffer the impact force on the movable valve plate on the fluid entry side, thereby avoiding the abutment failure problem caused by the rebound of the movable valve plate on the other side due to the impact.

[0082] In addition, the utility model embodiment further provides a vehicle thermal management system, which is provided with the valve device 10 described above.

[0083] 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 the sake of 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.

[0084] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present application, and they are not used to limit the protection scope of the present application, and any 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 apparatus comprising a valve body and a valve core assembly disposed within the valve body, the valve body having a plurality of external ports between which a fluid path is formed through the valve core assembly, characterised in that, The valve core assembly comprises: a first fixed valve plate provided with a first flow passage port; a second fixed valve plate provided with a second flow passage port, the first fixed valve plate and the second fixed valve plate being arranged apart in a straight line direction, the first flow passage port and the second flow passage port being located on the fluid path; a moving valve member arranged between the first fixed valve plate and the second fixed valve plate, the moving valve member being drivable to abut against the first fixed valve plate or the second fixed valve plate, the moving valve member being provided with a flow passage portion for fluid to pass through the moving valve member, the flow passage portion being capable of cooperating with the first flow passage port to form a first throttling port or cooperating with the second flow passage port to form a second throttling port, the moving valve member being further drivable to rotate about a first axis to adjust the opening size of the first throttling port or the second throttling port by changing the rotation angle.

2. The valve device according to claim 1, characterized in that The moving valve member comprises a first moving valve plate and a second moving valve plate arranged in a stack, the first moving valve plate being closer to the first fixed valve plate relative to the second moving valve plate, a limiting structure being arranged between the first moving valve plate and the second moving valve plate to keep the first moving valve plate and the second moving valve plate synchronously rotating about the first axis.

3. The valve device of claim 2, wherein The flow passage portion comprises a first flow passage groove arranged on the first moving valve plate and a second flow passage groove arranged on the second moving valve plate; The first flow passage groove is arranged on a side of the first moving valve plate away from the first fixed valve plate; The second flow passage groove is arranged on a side of the second moving valve plate away from the second fixed valve plate; The groove width of the first flow passage groove gradually decreases along a direction close to the first fixed valve plate, a groove bottom wall of the first flow passage groove is provided with a first through port penetrating through the first moving valve plate, the first through port being in the shape of an elongated slit; The groove width of the second flow passage groove gradually decreases along a direction close to the second fixed valve plate, a groove bottom wall of the second flow passage groove is provided with a second through port penetrating through the second moving valve plate, the second through port being in the shape of an elongated slit; The fluid passes through the first throttling port formed by the first through port cooperating with the first flow passage port or the second throttling port formed by the second through port cooperating with the second flow passage port to exit a cavity in which the moving valve member is located.

4. The valve device of claim 3, wherein The depth of the first through port is smaller than the groove depth of the first flow passage groove, and the first through port extends along the rotation direction of the moving valve member; the depth of the second through port is smaller than the groove depth of the second flow passage groove, and the second through port extends along the rotation direction of the moving valve member.

5. The valve device of claim 4, wherein The first moving valve plate and the second moving valve plate are generally in the shape of a fan-shaped column, the first flow passage groove has a first side opening arranged on a side cross section of the first moving valve plate, the fluid can enter the first flow passage groove through the first side opening; the second flow passage groove has a second side opening arranged on a side cross section of the second moving valve plate, the fluid can enter the second flow passage groove through the second side opening.

6. The valve device of claim 2, wherein The flow passage part includes a first flow passage groove provided on an end surface of the movable valve member close to the first fixed valve plate and a second flow passage groove provided on an end surface of the movable valve member close to the second fixed valve plate, and the first flow passage groove and the second flow passage groove are both inclined grooves; In the direction of rotation of the movable valve member, one side of the inclined groove is open, and forms a flow passage groove inlet in cooperation with the first fixed valve plate or the second fixed valve plate, and the fluid enters the inclined groove through the flow passage groove inlet and exits the cavity in which the movable valve member is located from the throttle port corresponding to the inclined groove.

7. The valve device of claim 6, wherein The first flow passage groove includes a first groove section and a second groove section connected to the first groove section, the groove width of the first groove section is smaller than the groove width of the second groove section, the groove width of the second groove section gradually increases in the direction away from the first groove section, the inclination of the first groove section is smaller than the inclination of the second groove section, and the inclination refers to the inclination of the groove bottom wall relative to the horizontal plane. The second flow passage groove includes a third groove section and a fourth groove section connected to the third groove section, the groove width of the third groove section is smaller than the groove width of the fourth groove section, the groove width of the fourth groove section gradually increases in the direction away from the third groove section, and the inclination of the third groove section is smaller than the inclination of the fourth groove section.

8. Valve device according to any of claims 3-7, characterized in that The projections of the first flow passage groove and the second flow passage groove on the first projection plane coincide, the projections of the first flow passage inlet and the second flow passage inlet on the first projection plane coincide, and the first projection plane is a plane perpendicular to the first axis.

9. Valve device according to claim 1 or 2, characterized in that The flow passage part is a movable valve plate through hole of the movable valve member, the movable valve plate through hole is formed with a movable valve plate flow passage for the fluid to flow through, and the direction in which the projection of the flow passage part on the first fixed valve plate or the second fixed valve plate coincides with the increased area of the flow passage inlet is defined as the positive direction of rotation, and the cross-sectional width of the movable valve plate through hole gradually decreases in the positive direction of rotation.

10. A thermal management system characterized by, The valve device includes the valve device according to any one of claims 1 to 9.

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