Control valves, thermal management systems and vehicles

Abstract

This invention discloses a control valve, a thermal management system, and a vehicle. The control valve includes: a valve body having an inlet, a valve seat channel, a connecting channel, and an outlet, the valve seat channel being connected to the outlet via the connecting channel; a control module for controlling the connection between the valve seat channel and the inlet; and a check assembly movable relative to the valve body, including a movable part and a sealing part disposed on the movable part, the sealing part corresponding to the outlet position. The check assembly is configured such that the sealing part opens the outlet when the pressure at the valve seat channel exceeds a predetermined value. This directly protects the valve body, reduces damage to the valve body from fluid backflow, and extends the service life of the control valve. It also ensures that the valve needle or other structures are unaffected by flow channel fluctuations, maintaining stable pressure and flow rate, thereby improving the accuracy of flow control. Furthermore, it reduces the number of valves required in the thermal management system, facilitating manufacturing and assembly.

Description

Technical Field

[0001] This invention relates to the field of control valve technology, and more specifically, to a control valve, a thermal management system, and a vehicle. Background Technology

[0002] In thermal management systems, electronic expansion valves can only regulate flow. In common flow channels, when refrigerant flows back, the absence of a check valve will cause the valve needle of the expansion valve to be pushed back by pressure. When the pressure is too high, the valve may have a reduced service life or be directly damaged. Therefore, when controlling the flow direction of fluid, a post-positioned check valve is usually used. This method is complex to assemble and has room for improvement. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of the present invention is to provide a control valve that can reduce the impact of fluid backflow and extend its service life.

[0004] The present invention also proposes a thermal management system.

[0005] The present invention also proposes a vehicle.

[0006] According to a first aspect of the present invention, a control valve includes: a valve body having an inlet, a valve seat channel, a communication channel, and an outlet, the valve seat channel communicating with the outlet through the communication channel; a control module for controlling the communication between the valve seat channel and the inlet; and a check assembly movable relative to the valve body, including a movable member and a blocking portion disposed on the movable member, the blocking portion corresponding to the outlet position, the check assembly being configured such that the blocking portion opens the outlet when the pressure in the valve seat channel exceeds a predetermined value.

[0007] According to embodiments of the present invention, the control valve, by incorporating a check valve assembly in the valve body, can directly protect the valve body, reduce damage to the valve body caused by fluid backflow, and improve the service life of the control valve. It can also ensure that the valve needle or other structures are not affected by flow channel fluctuations, maintaining stable pressure and flow rate, thereby improving the accuracy of flow control. Thus, the integrated check valve and control functions reduce the number of valves required in the thermal management system, simplify pipeline design, and minimize modifications to the structure of conventional control valves, facilitating manufacturing and assembly. Furthermore, implementing check and control through a mechanical structure enhances structural reliability.

[0008] In some embodiments, the movable member is provided with a baffle, and the check assembly further includes an elastic member located between the baffle and the blocking portion and cooperating with the baffle. The check assembly is configured such that when the pressure at the valve seat passage is less than a predetermined value, the blocking portion is adapted to block the output port under the action of the elastic member.

[0009] In some embodiments, the valve body has a mounting base located between and adjacent to the valve seat passage and the output port, and the elastic element is mounted on the mounting base and located between the mounting base and the baffle.

[0010] In some embodiments, the mounting base has a mounting groove on the side near the valve seat passage, and a portion of the elastic element is adapted to extend into the mounting groove.

[0011] In some embodiments, the check valve assembly further includes a movable member, wherein the baffle and the blocking portion are respectively connected to two ends in the extension direction of the movable member.

[0012] In some embodiments, the elastic element is a spring sleeved on the outside of the movable element.

[0013] In some embodiments, the movable member is detachably connected to the baffle and / or the blocking part, or the movable member is integrally formed with the baffle and / or the blocking part.

[0014] In some embodiments, the movable member includes a large-diameter section and a small-diameter section with different outer diameters, the small-diameter section being located on the side of the large-diameter section near the valve seat passage, and the baffle being sleeved on the small-diameter section and abutting against the large-diameter section.

[0015] In some embodiments, the outer periphery of the movable member is provided with an inwardly recessed limiting groove, the middle portion of the sealing portion defines a slot, the end of the movable member is adapted to be inserted into the slot, and the insertion port of the slot has a locking protrusion that engages with the limiting groove.

[0016] In some embodiments, the outer periphery of the sealing portion has a sealing groove for installing a sealing element, the sealing element abutting against the valve body to seal the output port.

[0017] In some embodiments, the outer periphery of the sealing portion has a mating slope that extends obliquely away from the valve seat passage and away from the centerline of the moving part.

[0018] In some embodiments, the output port forms a gradually expanding port with a gradually increasing opening size along the direction away from the valve seat channel.

[0019] In some embodiments, the valve body includes a valve seat and a check seat, the valve seat defining a valve seat passage, the check seat being detachably connected to the valve seat and defining the output port, and the check assembly being movably disposed on the check seat.

[0020] In some embodiments, the valve seat includes an outer valve sleeve and an inner valve sleeve, the inner valve sleeve defining the valve seat passage, the outer valve sleeve being disposed on the outer periphery of the inner valve sleeve and defining a receiving groove, the check seat being disposed in the receiving groove and at least a portion of the check seat being located between the outer valve sleeve and the inner valve sleeve, and the output port corresponding to the open opening of the receiving groove.

[0021] In some embodiments, the side of the baffle opposite to the blocking portion is adapted to abut against the inner valve sleeve to block the valve seat passage.

[0022] In some embodiments, the end of the check seat away from the output port has a communication port for connecting the valve seat channel and the input port.

[0023] In some embodiments, the end of the check seat away from the output port includes a plurality of baffles, with the communication port defined between two adjacent baffles.

[0024] In some embodiments, the control module includes a valve needle assembly and a drive member, the drive member being used to drive the valve needle assembly to move in a direction close to or away from the valve seat channel to adjust the opening of the control valve.

[0025] In some embodiments, the valve needle assembly includes a valve core, a screw, and a valve needle. The valve core has a through hole extending in a first direction. At least a portion of the inner wall of the through hole has an internal thread. The screw has an external thread that engages with the internal thread. The screw is rotatably engaged with the through hole. The valve needle is connected to the screw. The driving member includes a rotor, which is fixedly connected to the screw. The rotor drives the screw to rotate relative to the valve core, causing the screw to move in the first direction, thereby driving the valve needle to adjust the opening of the control valve.

[0026] A thermal management system according to a second aspect of the present invention includes a control valve according to a first aspect of the present invention.

[0027] The vehicle according to a third aspect of the invention includes a thermal management system according to a second aspect of the invention.

[0028] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0030] Figure 1 This is a schematic diagram of the structure of a control valve according to an embodiment of the present invention;

[0031] Figure 2 It is along Figure 1 Sectional view of line AA in the middle;

[0032] Figure 3 This is a partial structural schematic diagram of a control valve according to an embodiment of the present invention;

[0033] Figure 4 It is along Figure 3 Sectional view of the middle BB line;

[0034] Figure 5 This is a schematic diagram of the installation of the check valve assembly according to an embodiment of the present invention;

[0035] Figure 6 It is along Figure 5 A cross-sectional view of the CC line.

[0036] Figure label:

[0037] Control valve 100,

[0038] Valve body 10, valve seat channel 101, output port 102, connecting channel 103, valve seat 11, outer valve sleeve 111, inner valve sleeve 112, valve core seat 113, guide hole 1131, bolt ring 114, check seat 12, connecting port 121, retaining rib 122, mounting base 13, mounting groove 131, valve needle assembly 14.

[0039] Check valve assembly 20, baffle 21, sealing part 22, slot 221, locking protrusion 222, sealing groove 223, mating bevel 224, moving part 23, large diameter section 231, small diameter section 232, limiting groove 233, elastic element 24, sealing element 25. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0042] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0043] The following is for reference. Figures 1-6 A control valve 100 according to an embodiment of the present invention is described.

[0044] like Figures 1-6 As shown, a control valve 100 according to an embodiment of the present invention includes: a valve body 10, a control module, and a check valve assembly 20. The valve body 10 has an inlet (not shown in the figure), an inlet, a valve seat channel 101, a connecting channel 103, and an outlet 102. The valve seat channel 101 is connected to the outlet 102 through the connecting channel 103. The control module is used to control the connection between the valve seat channel 101 and the inlet. The check valve assembly 20 is movable relative to the valve body 10. The check valve assembly 20 includes a movable member 23 and a blocking part 22 disposed on the movable member 23. The blocking part 22 is positioned corresponding to the outlet 102. When the pressure at the valve seat channel 101 is greater than a predetermined value, the blocking part 22 opens the outlet 102, thereby allowing the fluid in the valve seat channel 101 to flow out through the outlet 102, realizing unidirectional fluid flow.

[0045] In other words, the opening and closing of the output port 102 is controlled by the movement of the movable part 23. When the valve seat channel 101 is opened, the fluid enters the valve seat channel 101 through the inlet. As the pressure in the valve seat channel 101 gradually increases, the inner pressure bearing surface of the movable part 23 located in the valve body 10 receives pressure, causing the sealing part 22 to tend to open the output port 102 until the pressure in the valve seat channel 101 reaches a predetermined value. Then, the sealing part 22 opens the output port 102 to ensure that the fluid can pass smoothly, thereby preventing the fluid from flowing backward and allowing the fluid to flow in one direction when needed.

[0046] The control valve 100 here can be used in applications requiring precise control of unidirectional fluid flow, such as in thermal management systems, where it can control the flow direction of coolant to optimize system efficiency. Additionally, it can be used in systems where backflow prevention is required, such as pump stations and hydraulic systems.

[0047] According to the embodiments of the present invention, the control valve 100, by providing a check valve assembly 20 on the valve body 10, can directly protect the valve body 10, reduce the damage to the valve body 10 caused by fluid backflow, improve the service life of the control valve 100, and also ensure that the valve needle or other structures of the control valve 100 are not affected by flow channel fluctuations, and that the pressure and flow rate are stable, thereby improving the accuracy of the control valve in controlling the flow rate. Thus, the control valve 100 integrates check valve function and control function, which can reduce the number of valves required in the thermal management system, simplify pipeline design, and at the same time reduce the modification of the structure of conventional control valves 100, making manufacturing and assembly easier. In addition, the mechanical structure for achieving check valve and control can improve the reliability of the structure.

[0048] like Figure 2 As shown, in some embodiments, the movable member 23 is provided with a baffle 21, and the check assembly 20 also includes an elastic member 24. The elastic member 24 is located between the baffle 21 and the blocking part 22, and the elastic member 24 cooperates with the baffle 21. When the pressure at the valve seat channel 101 is less than a predetermined value, the blocking part 22 blocks the output port 102.

[0049] When the valve seat passage 101 is opened, fluid enters the valve seat passage 101 through the inlet. As the pressure inside the valve seat passage 101 gradually increases, the inner pressure bearing surface of the movable member 23 located inside the valve body 10 receives pressure, causing the sealing part 22 to tend to open the outlet 102. Until the pressure inside the valve seat passage 101 reaches a predetermined value, the pressure on the inner pressure bearing surface of the movable member 23 is greater than the sum of the pressure on the outer pressure bearing surface and the elastic force of the elastic member 24. The sealing part 22 opens the outlet 102, allowing the fluid inside the valve body 10 to flow outward unidirectionally through the outlet 102.

[0050] In other words, the setting of the elastic element 24 provides a guarantee for the control valve 100, ensuring that the valve seat channel 101 and the output port 102 can be effectively controlled under different working conditions.

[0051] When the control valve 100 is working, the fluid flows through the valve seat passage 101 of the valve body 10 towards the output port 12. The moving part 23 is subjected to the force of the fluid flow and moves towards the output port 102, which drives the elastic part 24 to compress. The sealing part 22 opens the output port 102, that is, the connecting passage 103 between the valve seat passage 101 and the output port 102 is connected to the outside, so that the control valve 100 can work normally. When the control valve 100 stops working, the fluid stops flowing, the elastic part 24 resets, and drives the sealing part 22 to seal the output port 102, thereby achieving a protective function.

[0052] Therefore, the control valve 100 can quickly respond to the screening of fluid, allowing forward fluid to pass through and reverse fluid to be blocked, thus playing a filtering role, reducing the damage of fluid backflow to the valve body 10, and improving the service life of the control valve 100.

[0053] Furthermore, when the fluid begins to flow and impacts the movable part 23, the elastic part 24 can quickly deform and compress, and the baffle 21 and the sealing part 22 move under the action of the movable part 23, allowing the fluid to pass smoothly through the valve seat passage 101 and the output port 102, thereby improving the response speed and adjustment accuracy of the control valve 100.

[0054] In some embodiments, a baffle 21 is disposed on the movable member 23 and the baffle 21 corresponds to the position of the valve seat channel 101. The baffle 21 is adapted to open the valve seat channel 101 when the movable member moves. The movement of the movable member 23 is driven by fluid flow. The baffle 21 and the blocking part 22 are disposed on the movable member 23. The baffle 21 and the blocking part 22 can move synchronously to realize the synchronous opening or closing of the valve seat channel 101 and the output port 102.

[0055] In a non-flowing state, the elastic force of the elastic element 24 can be greater than zero, that is, the elastic element 24 is in a compressed state. The elastic force of the elastic element 24 acts on the baffle 21, which tightly seals the valve seat passage 101 to prevent fluid from leaking from the valve seat passage 101. At the same time, the sealing part 22 also seals the output port 102 when there is no fluid flow, ensuring that the entire control valve 100 remains in a relatively sealed state. No fluid can flow backward from the output port 102 into the control valve 100, so that the valve body 10 will not be impacted by the reverse fluid, thus protecting the control valve 100.

[0056] In some embodiments, the valve body 10 has a mounting base 13 located between the valve seat passage 101 and the output port 102, and the mounting base 13 is adjacent to the output port 102. An elastic element 24 is mounted on the mounting base 13 and is located between the mounting base 13 and the baffle 21.

[0057] The elastic element 24 is located in the space between the mounting base 13 and the baffle 21, thereby allowing the elastic element 24 to apply force to the baffle 21 so that the baffle 21 can seal the valve seat passage 101 by the elastic force of the elastic element 24 when there is no fluid flow, thus improving the sealing performance; of course, when there is no fluid flow, the elastic element 24 can also be in a free state, and the baffle 21 can block the valve seat passage 101.

[0058] When the fluid begins to flow and passes through the valve seat passage 101, the fluid acts on the movable part 23, overcoming the elastic force of the elastic part 24, and pushes the baffle 21 and the blocking part 22 to open simultaneously, thereby allowing the fluid to flow smoothly from the valve seat passage 101 to the outlet 102; after the fluid flow stops, the elastic part 24 will use its elastic force to return the baffle 21 and the blocking part 22 to the blocking position, closing the valve seat passage 101 and the outlet 102 again to prevent the fluid from flowing back.

[0059] By mounting the elastic element 24 on the mounting base 13, the assembly and maintenance process of the check valve assembly 20 is simplified. The mounting base 13 also provides stable support for the elastic element 24, ensuring reliability and durability during long-term operation.

[0060] like Figure 4 and Figure 6 As shown, in some embodiments, the mounting base 13 has a mounting groove 131 on the side near the valve seat channel 101. A portion of the elastic member 24 is adapted to extend into the mounting groove 131. The mounting groove 131 not only provides a precise positioning point for the elastic member 24, but also provides a certain degree of protection for the elastic member 24. The mounting groove 131 can also serve as a guide structure to ensure the alignment and positioning of the elastic member 24 during installation and disassembly, reduce installation errors, and improve assembly efficiency.

[0061] like Figure 4 As shown, in some embodiments, the movable member 23 is a movable rod, and the baffle 21 and the blocking part 22 are respectively connected to the two ends of the movable member 23 in the extension direction. By setting the movable member 23 as a rod-shaped structure, the structure of the check assembly 20 is simplified, making the check assembly 20 more compact, easier to install and maintain, and the linear movement of the movable rod can quickly respond to changes in fluid flow, quickly open or close the valve seat channel 101 and the outlet 102, improve the synchronicity of the action of the baffle 21 and the blocking part 22, and ensure the stability of the unidirectional flow of fluid.

[0062] like Figure 4 As shown, the center lines of the valve seat passage 101 and the output port 102 are collinear, ensuring that the fluid can flow smoothly along a straight path when passing through the control valve 100, thereby reducing fluid dynamic disturbances and pressure loss. The center line of the movable rod is collinear with the center line of the valve seat passage 101 and the center line of the output port 102. Therefore, when the movable rod 23 moves, it can accurately control the opening and closing of the baffle 21 and the sealing part 22, ensuring that the fluid flows efficiently and accurately between the valve seat passage 101 and the output port 102.

[0063] like Figure 4 As shown, in some embodiments, the elastic element 24 is a spring sleeved on the outside of the movable element 23. The spring sleeved on the outside of the movable rod makes the entire check assembly 20 more compact and reduces space occupation. The spring can quickly respond to changes in the position of the movable rod, providing instant elastic force feedback to ensure timely fluid control. The spring design can also reduce production costs, is easy to replace and maintain, and help reduce long-term operating costs.

[0064] In some embodiments, the movable part 23 is detachably connected to the baffle 21, so that the baffle 21 can be easily removed from the movable rod 23 when needed, which facilitates maintenance and replacement, improves the maintenance efficiency of the control valve 100, and also makes the assembly and disassembly process of the entire system more convenient.

[0065] In some embodiments, the movable part 23 is detachably connected to the sealing part 22, so that the sealing part 22 can be easily removed from the movable rod 23 when needed, which facilitates maintenance and replacement, improves the maintenance efficiency of the control valve 100, and also makes the assembly and disassembly process of the entire system more convenient.

[0066] In some embodiments, the movable part 23 and the baffle 21 are integrally formed. The integrated design can improve the structural strength and integrity of the control valve 100, while reducing assembly steps and improving production efficiency. It can also reduce potential failure points, reduce wear or loosening at the connection, and improve the durability and reliability of the control valve 100.

[0067] This one-piece molding can be achieved through a variety of manufacturing processes, such as precision casting, injection molding, or metal processing.

[0068] In some embodiments, the movable part 23 and the sealing part 22 are integrally formed. The integrated design can improve the structural strength and integrity of the control valve 100, while reducing assembly steps and improving production efficiency. It can also reduce potential failure points, reduce wear or loosening at the connection, and improve the durability and reliability of the control valve 100.

[0069] like Figure 6As shown, in some embodiments, the movable part 23 includes a large-diameter section 231 and a small-diameter section 232 with different outer diameters. The small-diameter section 232 is located on the side of the large-diameter section 231 near the valve seat passage 101. The baffle 21 is sleeved on the small-diameter section 232 and abuts against the large-diameter section 231, thereby providing precise positioning for the baffle 21, facilitating the installation of the baffle 21, and also improving the stability of the baffle 21 after assembly.

[0070] like Figure 6 As shown, in some embodiments, the outer periphery of the movable member 23 is provided with an inwardly recessed limiting groove 233, and the middle part of the sealing part 22 defines a slot 221. The end of the movable member 23 can be inserted into the slot 221. The insertion port of the slot 221 has a locking protrusion 222, which engages with the limiting groove 233, thereby realizing the connection between the sealing part 22 and the movable member 23. With the design of the slot 221 and the locking protrusion 222, the connection is more reliable and the probability of the sealing part 22 falling off the movable member 23 is reduced.

[0071] Of course, the protrusion 222 can also be set on the movable part 23. The outer periphery of the slot 221 of the sealing part 22 is also provided with a limiting groove 233. The end of the movable part 23 is inserted into the slot 221, and the protrusion 222 and the limiting groove 233 engage and cooperate, thereby realizing the connection between the sealing part 22 and the movable part 23.

[0072] like Figure 6 As shown, in some embodiments, the outer periphery of the sealing part 22 has a sealing groove 223 for installing a sealing element 25. The sealing part 22 abuts against the valve body 10 through the sealing element 25 to block the output port 102. This can improve the sealing effect of the output port 102, reduce the probability of fluid flowing back into the outlet 102 due to gaps when there is no fluid flow, and improve the reliability of the entire structure.

[0073] like Figure 6 As shown, in some embodiments, the outer periphery of the sealing portion 22 has a mating ramp 224, which extends obliquely away from the baffle 21 and away from the centerline of the movable member 23, such as... Figure 6 As shown, with the inclined surface 224 extending outward from top to bottom, the blocking part 22 can better block the output port 102 through the inclined surface 224, and make the blocking part 22 open the output port 102 more smoothly when the fluid flows. The inclined surface 224 can also reduce the resistance of the fluid when it passes through, optimize the flow characteristics of the fluid, and improve the overall performance and response speed of the control valve 100.

[0074] like Figure 4 and Figure 6As shown, in some embodiments, the output port 102 forms a gradually increasing flared port along the direction away from the valve seat channel 101. That is, the valve body 10 has an inclined surface at the output port 102, forming an output port 102 with a gradually increasing opening size. The flared port design helps to reduce the pressure loss and flow velocity of the fluid when it passes through, thereby reducing fluid turbulence and noise and improving the efficiency of fluid flow. In addition, the flared port design facilitates the cooperation between the inclined surface 224 and the valve body 10 when the sealing part 22 seals the output port 102, improving the reliability of the seal. When the sealing part 22 opens the output port 102, the fluid passes through the gap between the inclined surface 224 and the valve body 10 more smoothly, further reducing the generation of turbulence and eddies, reducing noise and vibration, and improving the service life and control accuracy of the control valve 100.

[0075] like Figure 1 and Figure 2 As shown, in some embodiments, the valve body 10 includes a valve seat 11 and a check seat 12. The valve seat 11 defines a valve seat passage 101. The check seat 12 is detachably connected to the valve seat 11 and defines an outlet 102. The check assembly 20 is movably disposed on the check seat 12.

[0076] In other words, the valve seat 11 can be the structure of a conventional valve body 10, and the check seat 12 and check assembly 20 can be assembled separately on the valve seat 11. This reduces the need for modifications to the structure of the conventional valve body 10 and facilitates the manufacturing and assembly of the structure. For example, the ends of the valve seat 11 and the check seat 12 are pressed together or press-fitted, and the connection is kept sealed.

[0077] like Figures 1-4 As shown, in some embodiments, the valve seat 11 includes an outer valve sleeve 111 and an inner valve sleeve 112. The inner valve sleeve 112 defines a valve seat passage 101. The outer valve sleeve 111 is disposed on the outer periphery of the inner valve sleeve 112 and defines a receiving groove. A check seat 12 is disposed in the receiving groove. At least a portion of the check seat 12 is located between the outer valve sleeve 111 and the inner valve sleeve 112. The output port 102 corresponds to the open opening of the receiving groove.

[0078] The check seat 12 is annular. The outer periphery of the end of the check seat 12 near the output port 102 is sealed to the outer valve sleeve 111, and the inner periphery of the end of the check seat 12 away from the output port 102 is sealed to the inner valve sleeve 112. Thus, there is a relatively sealed flow channel between the outer valve sleeve 111 and the inner valve sleeve 112, which reduces the probability of fluid leakage and improves the sealing performance and reliability of the control valve 100.

[0079] Mounting seat 13 is disposed inside check seat 12, and mounting seat 13 is connected to check seat 12 by multiple reinforcing ribs. There is a liquid passage between two adjacent reinforcing ribs so that the fluid in valve seat channel 101 can flow to outlet 102 through the liquid passage. Mounting seat 13, reinforcing ribs and check seat 12 can be integrally formed.

[0080] like Figure 4 As shown, in some embodiments, the side of the baffle 21 facing away from the blocking part 22 can abut against the inner valve sleeve 112, thereby blocking the valve seat channel 101. That is, the baffle 21 blocks the valve seat channel 101 by blocking one end face of the inner valve sleeve 112. The structure is simple and the control is convenient.

[0081] In some embodiments, the valve body 10 also has an inlet (not shown in the figure), such as Figure 6 As shown, the end of the check seat 12 away from the output port 102 has a communication port 121, which is used to connect the valve seat channel 101 and the input port.

[0082] For example, the inlet is located on the outer valve sleeve 111, and at least a part of the check seat 12 is spaced apart from the outer valve sleeve 111, which facilitates the disassembly and installation of the check seat 12 and the outer valve sleeve 111 and forms a first passage between them. At least a part of the check seat 12 is spaced apart from the inner valve sleeve 112, which facilitates the disassembly and installation of the check seat 12 and the inner valve sleeve 112 and forms a second passage between them. The connecting port 121 can connect the first passage and the second passage. Thus, the fluid flowing in through the inlet can flow to the valve seat channel 101 through the connecting port 121. The check seat 12, the outer valve sleeve 111, and the inner valve sleeve 112 are fitted with a seal, thereby ensuring that the fluid entering through the inlet can only flow to the valve seat channel 101 through the connecting port 121, and then drive the moving part 23 to flow to the outlet 102.

[0083] like Figure 6 As shown, in some embodiments, the end of the check seat 12 away from the output port 102 includes multiple retaining ribs 122, and a communication port 121 is defined between two adjacent retaining ribs 122. The valve seat 11 also includes a valve core seat 113 located inside the outer valve sleeve 111. The valve core seat 113 is located on the side of the inner valve sleeve 112 opposite to the output port 101. When the check seat 12 is installed inside the valve seat 11, the retaining ribs 122 can abut against the valve core seat 113, thereby limiting the installation of the check seat 12. Of course, the communication port 121 can also be directly opened on the check seat 12, or other structures can be used to form the communication port 121.

[0084] The valve core seat 113 can be connected to the outer valve sleeve 111 via a bolt ring 114. The valve core seat 113 can abut against the side of the inner valve sleeve 112 opposite to the output port 101. The valve core seat 113 has a guide hole 1131. Fluid entering the communication port 121 through the input port can flow to the valve seat channel 101 through the guide hole 1131, thereby realizing the flow of fluid.

[0085] The control valve 100 here can be an electronic expansion valve, or a normally open or normally closed valve, or other valves.

[0086] like Figure 2 As shown, in some embodiments, the control valve 100 further includes a valve needle assembly 14 and a drive member. The drive member is used to drive the valve needle assembly 14 to move in a direction close to or away from the valve seat channel 101, thereby adjusting the opening degree of the control valve 100. Specifically, the drive member can be a drive motor. The control valve 100 has a fully open state and a fully closed state. The drive member drives the valve needle assembly 14 to move in a direction away from the valve seat channel 101, thereby separating it from the valve seat channel 101. At this time, the valve needle assembly 14 fully opens the valve seat channel 101, and the control valve 100 is in the fully open state. The flow area and flow rate of fluids such as refrigerant through the valve seat channel 101 are the largest. The drive member drives the valve needle assembly 14 to move in a direction close to the valve seat channel 101 until the valve needle assembly 14 abuts against the edge of the valve seat channel 101, so that the valve needle assembly 14 completely closes the valve seat channel 101. At this time, the control valve 100 is in the fully closed state, and fluids such as refrigerant cannot flow from the valve seat channel 11.

[0087] In some embodiments, the valve needle assembly 14 includes a valve core, a screw, and a valve needle. The valve core has a through hole extending in a first direction. At least a portion of the inner wall of the through hole has an internal thread. The screw has an external thread that engages with the internal thread. The screw is rotatably engaged with the through hole. The valve needle is connected to the screw. The driving member includes a rotor. The rotor is fixedly connected to the screw. The rotor is used to drive the screw to rotate relative to the valve core, so that the screw moves in the first direction to drive the valve needle to adjust the opening of the control valve.

[0088] In other embodiments, the control module includes a stationary iron core and a moving iron core. The stationary iron core is fixed inside the valve body 10, and the moving iron core is movably disposed inside the valve body 10. The stationary iron core is an electromagnet. For example, when the electromagnet is energized, it generates a magnetic field that drives the moving iron core to move. The moving iron core is connected to the valve needle located at the valve seat channel 101. The movement of the moving iron core drives the valve needle to move, thereby realizing the connection between the valve seat channel 101 and the input port. When the electromagnet is de-energized, there is no magnetic field to drive the moving iron core to move, and the moving iron core remains stationary, realizing the disconnection between the valve seat channel 101 and the input port.

[0089] The thermal management system according to an embodiment of the present invention includes a control valve 100 according to an embodiment of the present invention. By including the control valve 100 of the present invention, all its beneficial effects are achieved, which will not be elaborated further here.

[0090] The vehicle according to a third aspect embodiment of the present invention includes a thermal management system according to a second aspect embodiment of the present invention, and has all the beneficial effects thereof, which will not be repeated here.

[0091] Other configurations and operations of the control valve 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here. The vertical, horizontal, and front-back directions are defined as shown in the figures.

[0092] In the description of this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0093] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0094] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A control valve (100), characterized in that, include: The valve body (10) has an inlet, a valve seat channel (101), a connecting channel (103) and an outlet (102), wherein the valve seat channel (101) is connected to the outlet (102) through the connecting channel (103); A control module, the control module being used to control the connection between the valve seat channel and the input port; Check assembly (20), which is movable relative to the valve body (10), includes a movable part (23) and a blocking part (22) provided on the movable part (23), the blocking part (22) being positioned corresponding to the output port (102), the check assembly (20) being configured such that when the pressure in the valve seat passage (101) is greater than a predetermined value, the blocking part (22) opens the output port (102). The valve body (10) includes a valve seat (11) and a check seat (12). The valve seat (11) defines the valve seat passage (101). The check seat (12) is detachably connected to the valve seat (11) and defines the output port (102). The check assembly (20) is movably disposed on the check seat (12). The valve seat (11) includes an outer valve sleeve (111) and an inner valve sleeve (112). The inner valve sleeve (112) defines the valve seat channel (101). The outer valve sleeve (111) is disposed on the outer periphery of the inner valve sleeve (112) and defines a receiving groove. The check seat (12) is disposed in the receiving groove and at least a portion of the check seat (12) is located between the outer valve sleeve (111) and the inner valve sleeve (112). The output port (102) corresponds to the open opening of the receiving groove.

2. The control valve (100) according to claim 1, characterized in that, The movable part (23) is provided with a baffle (21), and the check assembly (20) also includes an elastic element (24). The elastic element (24) is located between the baffle (21) and the blocking part (22) and cooperates with the baffle (21). The check assembly (20) is configured such that when the pressure at the valve seat channel (101) is less than a predetermined value, the blocking part (22) is adapted to block the output port (102) under the action of the elastic element (24).

3. The control valve (100) according to claim 2, characterized in that, The valve body (10) has a mounting base (13) located between and adjacent to the valve seat channel (101) and the output port (102), and the elastic element (24) is mounted on the mounting base (13) and located between the mounting base (13) and the baffle (21).

4. The control valve (100) according to claim 3, characterized in that, The mounting base (13) has a mounting groove (131) on the side near the valve seat channel (101), and a portion of the elastic element (24) is adapted to extend into the mounting groove (131).

5. The control valve (100) according to claim 2, characterized in that, The movable part (23) is a movable rod, and the baffle (21) and the sealing part (22) are respectively connected to the two ends of the movable part (23) in the extension direction.

6. The control valve (100) according to claim 5, characterized in that, The elastic element (24) is a spring sleeved on the outside of the movable element (23).

7. The control valve (100) according to claim 2, characterized in that, The movable part (23) is detachably connected to the baffle (21) and / or the sealing part (22), or, The movable part (23) is integrally formed with the baffle (21) and / or the sealing part (22).

8. The control valve (100) according to claim 7, characterized in that, The movable part (23) includes a large diameter section (231) and a small diameter section (232) with different outer diameters. The small diameter section (232) is located on the side of the large diameter section (231) near the valve seat channel (101). The baffle (21) is sleeved on the small diameter section (232) and abuts against the large diameter section (231).

9. The control valve (100) according to claim 7, characterized in that, The outer periphery of the movable part (23) is provided with an inwardly recessed limiting groove (233), the middle part of the sealing part (22) defines a slot (221), the end of the movable part (23) is adapted to be inserted into the slot (221), and the insertion port of the slot (221) has a locking protrusion (222) that engages with the limiting groove (233).

10. The control valve (100) according to claim 1, characterized in that, The outer periphery of the sealing part (22) has a sealing groove (223) for installing a sealing element (25). The sealing part (22) abuts against the valve body (10) through the sealing element (25) to block the output port (102).

11. The control valve (100) according to claim 1, characterized in that, The outer periphery of the sealing part (22) has a mating inclined surface (224), which extends obliquely away from the valve seat passage (101) and away from the center line of the moving part (23).

12. The control valve (100) according to claim 11, characterized in that, Along the direction away from the valve seat channel (101), the output port (102) forms a gradually expanding port with a gradually increasing opening size.

13. The control valve (100) according to claim 1, characterized in that, The check valve assembly (20) also includes a baffle (21) provided on the movable part (23), the side of the baffle (21) facing away from the blocking part (22) being adapted to abut against the inner valve sleeve (112) to block the valve seat passage (101).

14. The control valve (100) according to claim 1, characterized in that, The check valve (12) has a connecting port (121) at one end away from the output port (102), which is used to connect the valve seat channel (101) and the input port.

15. The control valve (100) according to claim 14, characterized in that, The end of the check valve (12) away from the output port (102) includes a plurality of baffles (122), and the communication port (121) is defined between two adjacent baffles (122).

16. The control valve (100) according to claim 1, characterized in that, The control module includes a valve needle assembly (14) and a drive unit, the drive unit being used to drive the valve needle assembly (14) to move in a direction close to or away from the valve seat channel (101) to adjust the opening of the control valve (100).

17. The control valve (100) according to claim 16, characterized in that, The valve needle assembly (14) includes a valve core, a screw, and a valve needle. The valve core has a through hole extending in a first direction. At least a portion of the inner wall of the through hole has an internal thread. The screw has an external thread that mates with the internal thread. The screw is rotatably engaged with the through hole. The valve needle is connected to the screw. The driving component includes a rotor, which is fixedly connected to the screw. The rotor is used to drive the screw to rotate relative to the valve core, so that the screw moves along the first direction to drive the valve needle to adjust the opening of the control valve (100).

18. A thermal management system, characterized in that, Includes the control valve (100) according to any one of claims 1-17.

19. A vehicle, characterized in that, Includes the thermal management system as described in claim 18.

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