Control valve, thermal management system and vehicle

Abstract

The invention discloses a control valve, a heat management system and a vehicle, the control valve comprises a valve body, the valve body is provided with an input port, a valve seat channel, a communicating channel and an output port, and the valve seat channel communicates with the output port through the communicating channel; the control module is used for controlling communication of the valve seat channel and the input port; the non-return assembly can move relative to the valve body and comprises a movable part and a blocking part arranged on the movable part, the blocking part corresponds to the output port in position, and the non-return assembly is constructed to enable the blocking part to open the output port when the pressure intensity at the position of the valve seat channel is larger than a preset value. Therefore, the valve body can be directly protected, damage to the valve body caused by fluid backflow is reduced, the service life of the control valve is prolonged, it can be guaranteed that a valve needle or other structures of the control valve are not affected by flow channel fluctuation, the pressure and the flow speed are stable, and therefore the flow control accuracy of the control valve is improved; the number of valves needed in the thermal management system can be reduced, and manufacturing and assembling are convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of control valves, and in particular to a control valve, a thermal management system and a vehicle. Background Art

[0002] In thermal management systems, electronic expansion valves can only regulate flow rates. In public flow channels, when refrigerant refluxes, the absence of a one-way valve will cause the valve needle of the expansion valve to be pushed back under pressure. When the pressure is too high, the valve may reduce its service life or be directly damaged. For this reason, a post-mounted one-way valve is usually used to control the flow direction of the fluid. This method is complex to assemble and has room for improvement. Summary of the invention

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

[0004] The invention also provides a thermal management system.

[0005] The present invention also provides a vehicle.

[0006] A control valve according to an embodiment of the first aspect of the present invention comprises: a valve body, the valve body having an input port, a valve seat channel, a connecting channel and an output port, the valve seat channel being connected to the output port through the connecting channel; a control module, the control module being used to control the connection between the valve seat channel and the input port; a check assembly, the check assembly being movable relative to the valve body and comprising a movable part and a blocking portion provided on the movable part, the blocking portion corresponding to the position of the output port, the check assembly being constructed so that the blocking portion opens the output port when the pressure in the valve seat channel is greater than a predetermined value.

[0007] According to the control valve of the embodiment of the present invention, by arranging a check assembly on the valve body, the valve body can be directly protected, the damage to the valve body caused by fluid backflow can be reduced, the service life of the control valve can be increased, and the control valve needle or other structures can be guaranteed not to be affected by flow channel fluctuations, the pressure and flow rate can be stable, thereby improving the accuracy of the control valve in controlling the flow rate; thus, the control valve integrates the check function and the control function, which can reduce the number of valves required in the thermal management system, simplify the pipeline design, and at the same time reduce the changes to the structure of the conventional control valve, which is convenient for manufacturing and assembly; in addition, the realization of check and control through mechanical structure can improve the reliability of the structure.

[0008] In some embodiments, a baffle is provided on the movable part, and the check assembly also includes an elastic part, which is located between the baffle and the sealing part and cooperates with the baffle. The check assembly is constructed so that when the pressure at the valve seat channel is less than a predetermined value, the sealing part is suitable for sealing the output port under the action of the elastic part.

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

[0010] In some embodiments, a side of the mounting seat close to the valve seat channel has a mounting groove, and a portion of the elastic member is suitable for extending into the mounting groove.

[0011] In some embodiments, the non-return assembly further includes a movable part, and the baffle and the blocking portion are respectively connected to two ends of the movable part in an extending direction.

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

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

[0014] In some embodiments, the movable part includes a large diameter section and a small diameter section with different outer diameters, the small diameter section is located on a side of the large diameter section close to the valve seat channel, and the baffle is sleeved on the small diameter section and abuts against the large diameter section.

[0015] In some embodiments, the outer periphery of the movable part is provided with an inwardly recessed limiting groove, the middle portion of the blocking portion is defined with a slot, the end portion of the movable part is suitable for being inserted into the slot and the insertion port of the slot has a latching protrusion that snaps into engagement with the limiting groove.

[0016] In some embodiments, the outer periphery of the blocking portion has a sealing groove for installing a sealing member, and the sealing member abuts against the valve body to block the output port.

[0017] In some embodiments, the outer periphery of the blocking portion has a matching slope, and the matching slope extends obliquely in a direction away from the valve seat channel and in a direction away from the center line of the movable part.

[0018] In some embodiments, the output port forms a gradually expanding port with an opening size gradually increasing in a 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 defines the valve seat channel, the check seat is detachably connected to the valve seat and defines the output port, and the check assembly is 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 defines the valve seat channel, the outer valve sleeve is arranged on the outer periphery of the inner valve sleeve and defines a receiving groove, the check seat is arranged in the receiving groove and at least a portion of the check seat is located between the outer valve sleeve and the inner valve sleeve, and the output port corresponds to the open port of the receiving groove.

[0021] In some embodiments, a side of the baffle facing away from the blocking portion is suitable for abutting against the inner valve sleeve to block the valve seat passage.

[0022] In some embodiments, the check seat has a communication port at one end away from the output port, and the communication port is used to connect 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 retaining ribs, and the communication port is defined between two adjacent retaining ribs.

[0024] In some embodiments, the control module includes: a valve needle assembly and a driving member, wherein the driving member is 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 is formed with a through hole extending through the valve core in a first direction. An internal thread is formed on at least a portion of the inner wall of the through hole. The screw is provided with an external thread matching the internal thread. The screw is rotatably matched 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 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.

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

[0027] A vehicle according to a third aspect of the present invention comprises a thermal management system according to the second aspect of the present invention.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0031] Figure 2 is along Figure 1 Sectional view along line AA;

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

[0033] Figure 4 is along Figure 3 Sectional view along the midline BB;

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

[0035] Figure 6 is along Figure 5 Sectional view along the CC line.

[0036] Reference numerals:

[0037] Control valve 100,

[0038] Valve body 10, valve seat channel 101, output port 102, communication 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, communication port 121, retaining rib 122, mounting seat 13, mounting groove 131, valve needle assembly 14,

[0039] The non-return assembly 20 , the baffle 21 , the blocking portion 22 , the slot 221 , the locking protrusion 222 , the sealing groove 223 , the matching inclined surface 224 , the movable part 23 , the large diameter section 231 , the small diameter section 232 , the limiting groove 233 , the elastic part 24 , and the sealing part 25 . DETAILED DESCRIPTION

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0041] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Reference below Figure 1-Figure 6 A control valve 100 according to an embodiment of the present invention is described.

[0044] like Figure 1-Figure 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 assembly 20, the valve body 10 has an input port (not shown in the figure), the valve body 10 has an input port, a valve seat channel 101, a connecting channel 103 and an output port 102, the valve seat channel 101 is connected with the output port 102 through the connecting channel 103; the control module is used to control the connection between the valve seat channel 101 and the input port, the check assembly 20 can move relative to the valve body 10, the check assembly 20 includes a movable part 23, and a blocking portion 22 arranged on the movable part 23, the blocking portion 22 corresponds to the position of the output port 102, when the pressure at the valve seat channel 101 is greater than a predetermined value, the blocking portion 22 opens the output port 102, thereby allowing the fluid in the valve seat channel 101 to flow out through the output port 102, thereby realizing unidirectional flow of the fluid.

[0045] That is to say, 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 input port. 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, so that the blocking part 22 has a tendency to open the output port 102 until the pressure in the valve seat channel 101 reaches a predetermined value. The blocking part 22 opens the output port 102 to ensure that the fluid can pass smoothly, thereby preventing the fluid from flowing in the opposite direction, and allowing the fluid to flow in one direction when necessary.

[0046] The control valve 100 herein can be used in situations where it is necessary to precisely control the unidirectional flow of a fluid, such as in a thermal management system, where it can be used to control the flow direction of a coolant to optimize system efficiency. In addition, it can also be used in systems where it is necessary to prevent the backflow of a fluid, such as a pump station, a hydraulic system, etc.

[0047] According to the control valve 100 of the embodiment of the present invention, by arranging the check assembly 20 on the valve body 10, the valve body 10 can be directly protected, the damage to the valve body 10 caused by the backflow of the fluid can be reduced, the service life of the control valve 100 can be increased, and it can also be ensured that the valve needle or other structures of the control valve 100 are not affected by the fluctuation of the flow channel, 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 the check function and the control function, which can reduce the number of valves required in the thermal management system, simplify the pipeline design, and at the same time can reduce the changes to the structure of the conventional control valve 100, which is convenient for manufacturing and assembly; in addition, the realization of check and control through mechanical structure can improve the reliability of the structure.

[0048] like Figure 2 As shown, in some embodiments, a baffle 21 is provided on the movable part 23, and the check assembly 20 also includes an elastic member 24, which is located between the baffle 21 and the blocking portion 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 portion 22 blocks the output port 102.

[0049] When the valve seat channel 101 is opened, the fluid enters the valve seat channel 101 through the input port. As the pressure in the valve seat channel 101 gradually increases, the inner pressure-bearing surface of the movable part 23 in the valve body 10 receives pressure, so that the blocking part 22 has a tendency to open the output port 102 until the pressure in the valve seat channel 101 reaches a predetermined value, and the pressure on the inner pressure-bearing surface of the movable part 23 is greater than the sum of the pressure on the outer pressure-bearing surface and the elastic force of the elastic part 24. The blocking part 22 opens the output port 102, so that the fluid inside the valve body 10 flows outward in one direction through the output port 102.

[0050] In other words, the provision of the elastic member 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, when the fluid flows toward the output port 12 through the valve seat channel 101 of the valve body 10, the movable member 23 is subjected to the force of the fluid flow and moves toward the output port 102, driving the elastic member 24 to be compressed, and the blocking portion 22 to open the output port 102, that is, the connecting channel 103 between the valve seat channel 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 member 24 returns to its original position, and drives the blocking portion 22 to block the output port 102, thereby achieving a protective effect.

[0052] Thus, the control valve 100 can respond quickly to the screening fluid, realize the forward fluid passing and the reverse fluid blocking, play a filtering role, reduce the damage of the fluid backflow to the valve body 10, and increase the service life of the control valve 100.

[0053] In addition, when the fluid begins to flow and impacts the movable part 23, the elastic part 24 can be quickly deformed and compressed, and the baffle 21 and the blocking part 22 move under the drive of the movable part 23, allowing the fluid to smoothly pass through the valve seat channel 101 and the output port 102, thereby helping to improve the response speed and adjustment accuracy of the control valve 100.

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

[0055] In a no-flow state, the elastic force of the elastic member 24 can be greater than zero, that is, the elastic member 24 is in a compressed state, and the elastic force of the elastic member 24 acts on the baffle 21 to tightly block the valve seat channel 101 to prevent fluid leakage from the valve seat channel 101. At the same time, the blocking portion 22 also blocks the output port 102 when there is no fluid flow, ensuring that the entire control valve 100 remains in a relatively sealed state, and any fluid cannot flow reversely from the output port 102 to the control valve 100, so that the valve body 10 will not be impacted by the reverse fluid, thereby protecting the control valve 100.

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

[0057] The elastic member 24 is in the space between the mounting seat 13 and the baffle 21, so that the elastic member 24 can exert force on the baffle 21, so that in the absence of fluid flow, the baffle 21 can seal the valve seat channel 101 through the elastic force of the elastic member 24, thereby improving the sealing performance; of course, in the absence of fluid flow, the elastic member 24 can also be in a free state, and the baffle 21 can block the valve seat channel 101.

[0058] When the fluid starts to flow and flows through the valve seat channel 101, the fluid acts on the movable part 23, overcomes the elastic force of the elastic part 24, and pushes the baffle 21 and the blocking part 22 to open synchronously, thereby allowing the fluid to flow smoothly from the valve seat channel 101 to the output port 102; after the fluid flow stops, the elastic part 24 will use the elastic force to return the baffle 21 and the blocking part 22 to the blocking position, and close the valve seat channel 101 and the output port 102 again to prevent the backflow of the fluid.

[0059] By installing the elastic member 24 on the mounting seat 13, the assembly and maintenance process of the non-return assembly 20 is simplified. The mounting seat 13 also provides stable support for the elastic member 24, ensuring reliability and durability in long-term operation.

[0060] like Figure 4 and Figure 6 As shown, in some embodiments, a side of the mounting seat 13 close to the valve seat channel 101 has a mounting groove 131, and a portion of the elastic member 24 is suitable for extending into the mounting groove 131. The mounting groove 131 not only provides a precise positioning point for the elastic member 24, but also can play a certain protective role for the elastic member 24. The mounting groove 131 can also serve as a guiding structure to ensure the alignment and positioning of the elastic member 24 during the installation and disassembly process, reduce installation errors, and improve assembly efficiency.

[0061] like Figure 4 As shown, in some embodiments, the movable part 23 is a movable rod, and the baffle 21 and the blocking portion 22 are respectively connected to the two ends of the movable part 23 in the extension direction. By setting the movable part 23 as a rod-shaped structure, the structure of the check assembly 20 is simplified, making the structure of the check assembly 20 more compact and convenient for installation and maintenance. The linear motion of the movable rod can quickly respond to changes in fluid flow, quickly open or close the valve seat channel 101 and the output port 102, improve the synchronization of the movement of the baffle 21 and the blocking portion 22, and ensure the stability of the unidirectional flow of the fluid.

[0062] like Figure 4 As shown, the center lines of the valve seat channel 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 dynamics disturbances and pressure losses; the center line of the movable rod is collinear with the center line of the valve seat channel 101 and the center line of the output port 102, so that the movable rod 23 can accurately control the opening and closing of the baffle 21 and the blocking portion 22 when moving, ensuring that the fluid flows efficiently and accurately between the valve seat channel 101 and the output port 102.

[0063] like Figure 4 As shown, in some embodiments, the elastic member 24 is a spring sleeved on the outside of the movable member 23, and the spring is sleeved on the outside of the movable rod, so that the entire check assembly 20 is more compact and reduces space occupancy. The spring can quickly respond to the position change of the movable rod and provide instant elastic force feedback to ensure the timeliness of fluid control. The design of the spring can also reduce production costs, is easy to replace and maintain, and helps to 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 is convenient for maintenance and replacement, thereby improving the repair and maintenance efficiency of the control valve 100, and also making 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 is convenient for maintenance and replacement, thereby improving the repair and maintenance efficiency of the control valve 100, and also making 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 the assembly steps and improving production efficiency. It can also reduce potential failure points, reduce wear or looseness at the connections, etc., thereby improving the durability and reliability of the control valve 100.

[0067] Here, 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 the assembly steps and improving production efficiency. It can also reduce potential failure points, reduce wear or looseness at the connection, etc., 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 close to the valve seat channel 101, and the baffle 21 is sleeved on the small diameter section 232, and the baffle 21 abuts against the large diameter section 231, thereby providing precise positioning of 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 part 23 is provided with an inwardly recessed limiting groove 233, and the middle part of the blocking part 22 is defined with a slot 221, and the end of the movable part 23 can be inserted into the slot 221. The insertion port of the slot 221 has a latching protrusion 222, and the latching protrusion 222 is snap-fitted with the limiting groove 233, thereby realizing the connection between the blocking part 22 and the movable part 23. With the design of the slot 221 and the latching protrusion 222, the connection is more reliable, reducing the probability of the blocking part 22 falling off the movable part 23.

[0071] Of course, the latching protrusion 222 can also be set on the movable part 23, and the outer periphery of the slot 221 of the sealing part 22 is also provided with a limiting groove 233. When the end of the movable part 23 is inserted into the slot 221, the latching protrusion 222 and the limiting groove 233 are engaged with each other, 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 portion 22 has a sealing groove 223 for installing a sealing member 25. The sealing portion 22 abuts against the valve body 10 through the sealing member 25 to seal the output port 102. This can improve the sealing effect on the output port 102, reduce the probability of a gap at the output port 102 causing a reverse inflow of fluid 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 blocking portion 22 has a matching slope 224, and the matching slope 224 extends obliquely from the direction away from the baffle 21 to the direction away from the center line of the movable member 23, such as Figure 6 As shown, the matching bevel 224 extends obliquely from top to bottom and outward, and the blocking portion 22 can better block the output port 102 through the matching bevel 224, and enable the blocking portion 22 to open the output port 102 more smoothly when the fluid flows. The matching bevel 224 can also reduce the resistance of the fluid when passing 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 expanding port with an opening size gradually increasing in a 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 an opening size gradually increasing. The gradually expanding port design helps to reduce the pressure loss and flow rate of the fluid when passing through, thereby reducing the turbulence and noise of the fluid and improving the efficiency of the fluid flow. In addition, through the gradually expanding port design, when the sealing portion 22 blocks the output port 102, it is beneficial to the matching bevel 224 and the valve body 10 to improve the reliability of the seal; when the sealing portion 22 opens the output port 102, the fluid is more stable when passing through the gap between the matching bevel 224 and the valve body 10, further reducing the generation of turbulence and eddy currents, 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 channel 101, the check seat 12 is detachably connected to the valve seat 11, and the check seat 12 defines an output port 102, and the check assembly 20 is movably disposed on the check seat 12.

[0076] That is to say, the valve seat 11 can be the structure of a conventional valve body 10, and the check seat 12 and the check assembly 20 can be assembled on the valve seat 11 separately, thereby reducing the changes to the structure of the conventional valve body 10 and facilitating the manufacture and assembly of the structure. For example, the end of the valve seat 11 and the check seat 12 are pressed or interference fit, and the connection remains sealed.

[0077] like Figure 1-Figure 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 channel 101, the outer valve sleeve 111 is arranged on the outer periphery of the inner valve sleeve 112, and the outer valve sleeve 111 defines a receiving groove, the check seat 12 is arranged 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, and the output port 102 corresponds to the open port of the receiving groove.

[0078] The check seat 12 is formed in a ring shape, and the outer periphery of the end of the check seat 12 close to the output port 102 is sealed with 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 with the inner valve sleeve 112, thereby providing a relatively sealed flow channel between the outer valve sleeve 111 and the inner valve sleeve 112, reducing the probability of fluid leakage and improving the sealing and reliability of the control valve 100.

[0079] The mounting seat 13 is arranged in the check seat 12, and the mounting seat 13 is connected to the check seat 12 through a plurality of reinforcing ribs, and a liquid port is provided between two adjacent reinforcing ribs so that the fluid in the valve seat channel 101 can flow to the output port 102 through the liquid port, and the mounting seat 13, the reinforcing ribs and the check seat 12 can be an integrally formed part.

[0080] like Figure 4 As shown, in some embodiments, the side of the baffle 21 facing away from the sealing portion 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 surface of the inner valve sleeve 112, with a simple structure and easy control.

[0081] In some embodiments, the valve body 10 further has an input port (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, and the communication port 121 is used to connect the valve seat channel 101 and the input port.

[0082] For example, the input port is located on the outer valve sleeve 111, and at least a portion of the check seat 12 is spaced apart from the outer valve sleeve 111, which is convenient for disassembly and installation of the check seat 12 and the outer valve sleeve 111, and a first passage is formed between the two. At least a portion of the check seat 12 is spaced apart from the inner valve sleeve 112, which is convenient for disassembly and installation of the check seat 12 and the inner valve sleeve 112, and a second passage is formed between the two. The connecting port 121 can connect the first passage with the second passage, so that the fluid flowing in through the input port can flow to the valve seat channel 101 through the connecting port 121, and the check seat 12 cooperates with the outer valve sleeve 111 and the inner valve sleeve 112 through a sealing member, thereby ensuring that the fluid entering the input port can only flow to the valve seat channel 101 through the connecting port 121, and then drive the movable part 23 to flow to the output port 102 when it moves.

[0083] like Figure 6 As shown, in some embodiments, the end of the check seat 12 away from the output port 102 includes a plurality of retaining ribs 12, and a communication port 121 is defined between two adjacent retaining ribs 12. The valve seat 11 also includes a valve core seat 113 located inside the outer valve sleeve 111, and the valve core seat 113 is located on the side of the inner valve sleeve 112 away from the output port 101. When the check seat 12 is installed in the valve seat 11, the retaining ribs 12 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] Among them, the valve core seat 113 can be connected to the outer valve sleeve 111 through the bolt ring 114, the valve core seat 113 can be abutted against the side of the inner valve sleeve 112 away from the output port 101, and the valve core seat 113 has a guide hole 1131. The fluid entering the connecting port 121 through the input port can flow to the valve seat channel 101 through the guide hole 1131, thereby realizing the circulation of the fluid.

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

[0086] like Figure 2 As shown, in some embodiments, the control valve 100 also includes: a valve needle assembly 14 and a driving member, the driving 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, so as to adjust the opening of the control valve 100. Specifically, the driving member can be a driving motor, and the control valve 100 has a fully open state and a fully closed state. The driving member drives the valve needle assembly 14 to move in a direction away from the valve seat channel 101 so as to separate 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 a fully open state. The flow area of ​​the refrigerant and other fluids through the valve seat channel 101 is the largest, and the flow rate is also the largest; the driving 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 a fully closed state, and the refrigerant and other fluids 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. A through hole is formed on the valve core and passes through along a first direction. An internal thread is formed on at least a portion of the inner wall of the through hole. The screw is provided with an external thread that cooperates with the internal thread. The screw rotates 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 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.

[0088] In other embodiments, the control module includes a static iron core and a moving iron core. The static iron core is fixed in the valve body 10, and the moving iron core is movably arranged in the valve body 10. The static iron core is an electromagnet. For example, when the electromagnet is energized, a magnetic field is generated to drive the moving iron core to move. The moving iron core is connected to a valve needle arranged in 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 powered off, there is no magnetic field to drive the moving iron core to move, and the moving iron core remains stationary, thereby realizing the disconnection between the valve seat channel 101 and the input port.

[0089] The thermal management system according to the embodiment of the present invention includes the control valve 100 according to the embodiment of the present invention. By including the control valve 100 according to the embodiment of the present invention, all the beneficial effects thereof are achieved, which will not be described in detail here.

[0090] The vehicle according to the third aspect of the present invention includes the thermal management system according to the second aspect of the present invention and has all the beneficial effects thereof, which will not be described in detail herein.

[0091] Other structures and operations of the control valve 100 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail herein.

[0092] In the description of the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0093] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

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

Claims

1. A control valve (100), characterized in that: include: A valve body (10), the valve body (10) having an input port, a valve seat channel (101), a communication channel (103) and an output port (102), the valve seat channel (101) being in communication with the output port (102) via the communication channel (103); A control module, the control module is used to control the communication between the valve seat channel and the input port; A check assembly (20), the check assembly (20) being movable relative to the valve body (10), and comprising a movable member (23) and a blocking portion (22) arranged on the movable member (23), the blocking portion (22) corresponding to the position of the output port (102), the check assembly (20) being configured such that when the pressure in the valve seat channel (101) is greater than a predetermined value, the blocking portion (22) opens the output port (102).

2. The control valve (100) according to claim 1, characterized in that: A baffle (21) is provided on the movable member (23), and the non-return assembly (20) further comprises an elastic member (24), wherein the elastic member (24) is located between the baffle (21) and the blocking portion (22) and cooperates with the baffle (21), and the non-return assembly (20) is constructed such that when the pressure at the valve seat channel (101) is less than a predetermined value, the blocking portion (22) is adapted to block the output port (102) under the action of the elastic member (24).

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

4. The control valve (100) according to claim 3, characterized in that: A side of the mounting seat (13) close to the valve seat channel (101) has a mounting groove (131), and a portion of the elastic member (24) is suitable for extending into the mounting groove (131).

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

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

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

8. The control valve (100) according to claim 7, characterized in that: The movable part (23) comprises a large diameter section (231) and a small diameter section (232) having different outer diameters; the small diameter section (232) is located on a side of the large diameter section (231) close to the valve seat channel (101); and 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 blocking part (22) is defined with a slot (221), the end of the movable part (23) is suitable for being inserted into the slot (221), and the insertion opening of the slot (221) has a locking protrusion (222) that is engaged with the limiting groove (233).

10. The control valve (100) according to claim 1, characterized in that: The outer periphery of the blocking portion (22) is provided with a sealing groove (223) for installing a sealing member (25); the blocking portion (22) abuts against the valve body (10) through the sealing member (25) to block the output port (102).

11. The control valve (100) according to claim 1, characterized in that: The outer periphery of the blocking portion (22) has a matching inclined surface (224), and the matching inclined surface (224) extends obliquely in a direction away from the valve seat channel (101) and in a direction away from the center line of the movable part (23).

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

13. The control valve (100) according to any one of claims 1 to 12, characterized in that: The valve body (10) comprises a valve seat (11) and a check seat (12); the valve seat (11) defines the valve seat channel (101); the check seat (12) is detachably connected to the valve seat (11) and defines the output port (102); and the check assembly (20) is movably arranged on the check seat (12).

14. The control valve (100) according to claim 13, characterized in that The valve seat (11) comprises an outer valve sleeve (111) and an inner valve sleeve (112), wherein the inner valve sleeve (112) defines the valve seat channel (101), the outer valve sleeve (111) is arranged on the outer periphery of the inner valve sleeve (112) and defines a receiving groove, the check seat (12) is arranged 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), and the output port (102) corresponds to an open port of the receiving groove.

15. The control valve (100) according to claim 14, characterized in that The check assembly (20) further comprises a baffle (21) arranged on the movable member (23), wherein a side of the baffle (21) facing away from the blocking portion (22) is suitable for abutting against the inner valve sleeve (112) to block the valve seat passage (101).

16. The control valve (100) according to claim 13, characterized in that An end of the check seat (12) away from the output port (102) has a communication port (121), and the communication port (121) is used to connect the valve seat channel (101) and the input port.

17. The control valve (100) according to claim 16, characterized in that One end of the check seat (12) away from the output port (102) comprises a plurality of retaining ribs (12), and the communication port (121) is defined between two adjacent retaining ribs (12).

18. The control valve (100) according to claim 1, characterized in that The control module comprises: a valve needle assembly (14) and a driving member, wherein the driving member is used to drive the valve needle assembly (14) to move in a direction approaching or moving away from the valve seat channel (101) to adjust the opening of the control valve (100).

19. The control valve (100) according to claim 18, characterized in that The valve needle assembly (14) comprises a valve core, a screw rod and a valve needle, the valve core is formed with a through hole penetrating in a first direction, at least part of the inner wall of the through hole is formed with an internal thread, the screw rod is provided with an external thread matching with the internal thread, the screw rod is rotatably matched with the through hole, and the valve needle is connected to the screw rod. The driving member comprises a rotor, which is fixedly connected to the screw rod. The rotor is used to drive the screw rod to rotate relative to the valve core, so that the screw rod moves along the first direction to drive the valve needle to adjust the opening of the control valve (100).

20. A thermal management system, characterized in that: The invention comprises a control valve (100) according to any one of claims 1 to 19.

21. A vehicle, characterized in that: Includes the thermal management system of claim 20.

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