Self-operated flow control valve and cooling device

Abstract

The utility model discloses a self-operated flow control valve and a cooling device. The self-operated flow control valve comprises a valve core component, a valve core component and a cooling component, the first gland part and the second gland part are arranged at the two axial ends of the valve element part respectively, the first gland part and the second gland part are suitable for being connected with the two sides of a cooling water channel in a pressing mode respectively so as to fix the valve element part, and the two sides of the cooling water channel and the side walls of the cooling water channel form a valve shell of the self-operated flow control valve. The self-operated flow control valve is embedded in the cooling water channel structure and integrated with the cooling water channel, an additional valve shell is not needed, reasonable reuse and compactness of the structure are achieved, production, assembly, maintenance and replacement are convenient, and the cooling water channel flow control scene with the strict requirement for the structural size can be met; and the flow control requirement of large flow in the cooling water channel can be met. In addition, external force driving is not needed, and automatic adjustment is achieved only by taking the pressure of the adjusted medium and the pressure change of the medium as a power source.

Description

Technical Field

[0001] The utility model relates to the technical field of control valves, in particular to a self-operated flow control valve and a cooling device. Background Art

[0002] In the related art, there are two forms of self-acting flow control valve structures, which rely on changing the size of the throttle fluid resistance to control the flow of the throttle. Among them, the first type of flow control valve is divided into a throttle valve part and a pressure reducing valve part. The throttle valve part has a throttle valve core for controlling the size of the flow; the lower part is a pressure reducing valve part for controlling the pressure difference between the inlet and outlet of the throttle valve part. When working, the output shaft of the linear stepper motor is fixed to the throttle valve core, and the displacement of the throttle valve core is adjusted to control the flow through it. The valve body has a complex structure and is difficult to embed into the cooling water channel. It can only be made into a separate self-acting flow control valve connected to the cooling water channel, which increases the structural volume and the manufacturing cost, and cannot meet the cooling water channel flow control scenario with strict requirements on the structural volume. The second type of flow control valve includes a valve housing and a valve body arranged in the valve housing, a first chamber and a second chamber are provided in the valve body, and an elastic diaphragm is provided between the two to separate them, and the valve body is provided with a first opening connected to the first chamber and a second opening connected to the second chamber. The elastic diaphragm can change the size of the first opening and / or the second opening with the pressure change. The valve body has a simple structure, but because the coolant usually flows through the valve body at a large flow rate and high flow rate, and the volume change range of the first chamber and the second chamber produced by the bending deformation of the elastic module is small, the adjustable flow range is small, and it cannot meet the flow control requirements of large flows in the cooling water channel. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a self-acting flow control valve, which is embedded in the cooling water channel structure and integrated with the cooling water channel, does not require an additional valve housing, realizes reasonable reuse of the structure, is compact and easy to produce and assemble, and can meet the flow control needs of large flows in the cooling water channel.

[0004] The utility model further proposes a cooling device.

[0005] According to the first aspect of the present invention, the self-operated flow control valve comprises: a valve core component; a first pressure cover component and a second pressure cover component, which are respectively arranged at the two axial ends of the valve core component, and the first pressure cover component and the second pressure cover component are respectively suitable for being crimped with the two sides of the cooling water channel to fix the valve core component, and the two sides of the cooling water channel and its side walls constitute the valve housing of the self-operated flow control valve.

[0006] According to the self-operated flow control valve of the embodiment of the utility model, the following effects can be achieved: First, the self-operated flow control valve is embedded in the cooling water channel structure and integrated with the cooling water channel, without the need for an additional valve shell, thus achieving reasonable reuse of the structure, simplifying the valve body structure, being compact and convenient for production, assembly, maintenance and replacement. Moreover, the structure is relatively simple, and can meet the cooling water channel flow control scenarios with stringent requirements on the structural volume. Second, the self-operated flow control valve uses the cooling water channel as a chamber, and the entire chamber is obviously larger. Under the premise that the volume of the valve core component is the same, the chamber of the self-operated flow control valve will be much larger, allowing large-flow, high-velocity liquids to flow through the valve core component. Moreover, the cross-sectional area of ​​the valve port is enlarged, which can meet the flow control requirements of large flows in the cooling water channel. That is, the adjustable flow range is large, which can meet the flow control requirements of large flows in the cooling water channel. Third, this self-operated flow control valve is a self-operated self-controlled flow regulating valve. It does not require external force to drive, but only relies on the pressure of the regulated medium itself and its medium pressure change as the power source. It automatically adjusts according to the pre-set flow setting value. The pre-set flow setting value is determined by the valve core component structure.

[0007] According to some embodiments of the utility model, the first pressure cover component includes a first pressure cover and a first bushing, the first pressure cover is provided with a boss, the outer wall of the boss is interference fit with the inner wall of the first bushing, and the side of the first pressure cover facing away from the boss is crimped with one side of the cooling water channel.

[0008] According to some embodiments of the utility model, the outer edge of the boss is provided with one of a plurality of mating keys and mating keyways evenly distributed along the circumference, and the first bushing is provided with another of a plurality of mating keys and mating keyways evenly distributed along the circumference, and the mating keys and mating keyways are radially positioned and matched.

[0009] According to some embodiments of the utility model, the outer side wall of the boss is provided with a first spline, and the inner side wall of the first bushing is provided with a second spline which is interference fit with the first spline.

[0010] According to some embodiments of the present utility model, a plurality of first openings uniformly distributed along the circumferential direction are provided on the side wall of the first bushing, and the plurality of first openings are suitable for communicating with the water outlet side of the cooling water channel.

[0011] According to some embodiments of the utility model, the second pressure cover component includes a second pressure cover and a second bushing, the second pressure cover is provided with a convex ring, the outer wall of the convex ring is interference fit with the inner wall of the second bushing, and the side of the second pressure cover facing away from the convex ring is crimped with the other side of the cooling water channel.

[0012] According to some embodiments of the utility model, the second gland is provided with a second opening spaced apart from the convex ring, and the second opening is suitable for communicating with the water inlet side of the cooling water channel.

[0013] According to some embodiments of the utility model, the valve core component includes a valve core, an elastic member and a third pressure cover, the valve core is arranged in the second pressure cover component, the third pressure cover is arranged on the side of the valve core away from the second pressure cover component, the elastic member is arranged in the third pressure cover and abuts against the first pressure cover component, and the side of the valve core away from the second pressure cover component abuts against the third pressure cover under the action of the elastic member.

[0014] According to some embodiments of the utility model, it also includes: a guide slide cover, suitable for being connected to the side wall of the cooling water channel, the guide slide cover is arranged around the outer periphery of the third pressure cover, and the guide slide cover cooperates with the outer periphery of the third pressure cover to limit the movement of the third pressure cover toward the side of the valve core.

[0015] According to some embodiments of the utility model, the inner side wall of the guide slide cover is provided with a first conical surface, and the outer side wall of the third pressure cover is provided with a second conical surface which is guided and matched with the first conical surface.

[0016] According to some embodiments of the utility model, a groove is provided on one side of the third pressure cover close to the valve core, a third conical surface is provided on the inner side wall of the groove, and a fourth conical surface is provided on one end of the valve core close to the third pressure cover to cooperate with the third conical surface for guidance.

[0017] According to some embodiments of the utility model, the valve core includes a first shaft, a second shaft and a third shaft whose radii increase successively along the axial direction, one end of the first shaft is abutted against the third pressure cover under the action of the elastic member, at least part of the second shaft and the third shaft are gap-fitted with the inner wall of the second pressure cover component, and the third shaft is limitedly fitted in the second pressure cover component to limit the moving stroke of the valve core.

[0018] According to some embodiments of the utility model, it is characterized in that the inner wall of the second pressure cover component includes at least a first inner wall surface and a second inner wall surface whose inner diameters decrease successively along the axial direction, the first inner wall surface is arranged on the side of the second inner wall surface away from the cooling water channel, the first inner wall surface is clearance-matched with the outer peripheral surface of the second shaft, and the second inner wall surface is clearance-matched with the outer peripheral surface of the third shaft.

[0019] According to some embodiments of the present utility model, the first gland component is suitable for communicating with the water outlet side of the cooling water channel, and the second gland component is suitable for communicating with the water inlet side of the cooling water channel.

[0020] According to the cooling device of the second aspect of the utility model, the cooling device includes: a cooling water channel plate, in which a receiving groove is provided; a heat sink, which is covered on the cooling water channel plate to form a receiving cavity; and the self-operated flow control valve, which is arranged in the receiving cavity, the first pressure cover component is press-fitted with the heat sink and the second pressure cover component is pressed on the bottom of the receiving groove.

[0021] According to some embodiments of the utility model, the cooling water channel plate is provided with a first cooling water channel for water outlet and a second cooling water channel for water inlet along its thickness direction, the second cooling water channel is communicated with the second pressure cover component, the first cooling water channel is communicated with the first pressure cover component, and the valve core component selectively connects the first cooling water channel and the second cooling water channel.

[0022] According to some embodiments of the utility model, a plurality of fins are provided on a plate surface on one side of the heat sink facing the accommodating groove, a portion of the fins are provided in the first cooling water channel, and another portion of the fins are provided in the accommodating groove and are arranged around the outer periphery of the first pressure cover component.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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:

[0025] Figure 1 It is an exploded schematic diagram of a self-operated flow control valve embedded in a cooling water channel according to an embodiment of the utility model;

[0026] Figure 2 It is a central longitudinal sectional view of a self-operated flow control valve embedded in a cooling water channel according to an embodiment of the utility model;

[0027] Figure 3 yes Figure 2 Step section view of step section AA;

[0028] Figure 4 yes Figure 2 An enlarged view of a part B;

[0029] Figure 5 It is a structural schematic diagram of a valve core according to an embodiment of the utility model;

[0030] Figure 6 is a schematic structural diagram of a second bushing according to an embodiment of the utility model;

[0031] Figure 7 It is a structural schematic diagram of a first bushing and a first gland according to an embodiment of the utility model;

[0032] Figure 8 is a structural schematic diagram of a first bushing and a first gland according to another embodiment of the utility model;

[0033] Fig. 9 It is a structural schematic diagram of a heat dissipation plate according to an embodiment of the utility model;

[0034] Fig.10 It is a structural schematic diagram of a heat dissipation plate according to another embodiment of the utility model.

[0035] Reference numerals:

[0036] 1. First pressure cover; 101. Boss; 102. Matching keyway; 103. First spline; 2. First bushing; 201. First opening; 3. Second pressure cover; 301. Protruding ring; 302. Second opening; 4. Second bushing; 401. First inner wall surface; 402. Second inner wall surface; 5. Valve core; 501. First shaft; 502. Second shaft; 503. Third shaft; 6. Elastic member; 7. Third pressure cover; 701. Groove; 8. Guide cover; 9. Cooling water channel plate; 901. Receiving groove; 902. First cooling water channel; 903. Second cooling water channel; 10. Heat sink; 1001. Fin; 11. Sealing member; 12. First chamber; 13. Second chamber. DETAILED DESCRIPTION

[0037] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0038] Reference below Figure 1-Figure 10 A self-operated flow control valve according to an embodiment of the utility model is described.

[0039] like Figure 1-Figure 10 As shown, the self-operated flow control valve includes: a valve core component, a first gland component and a second gland component.

[0040] The first gland component and the second gland component are respectively arranged at the two ends of the valve core component in the axial direction. The first gland component and the second gland component are respectively suitable for being crimped with the two sides of the cooling water channel to fix the valve core component. The two sides of the cooling water channel and its side walls constitute the valve shell of the self-powered flow control valve.

[0041] The valve core component is fixed by crimping the first gland component and the second gland component on the opposite sides of the cooling water channel, and the two sides of the cooling water channel and its side walls are used as the valve shell of the self-operated flow control valve, so as to achieve reasonable reuse of the structure, simplify the valve body structure, and facilitate production and assembly. In addition, the self-operated flow control valve is embedded in the cooling water channel structure and integrated with the cooling water channel, without the need for an additional valve shell, which is compact and easy to assemble and easy to repair and maintain. In addition, a steady flow of the coolant can be achieved, thereby ensuring the stable heat dissipation effect of the cooling object (such as the IGBT module in the electric control box, the busbar capacitor, etc.) during the entire cooling process, reducing the temperature fluctuation of the cooling object, and improving the reliability of the cooling object.

[0042] Compared with the first flow control valve mentioned in the prior art, the self-operated flow control valve of the utility model uses the opposite sides of the cooling water channel and its side walls as the valve shell of the self-operated flow control valve, which is integrated with the cooling water channel. It has a simple structure and can meet the cooling water channel flow control scenarios with strict requirements on structural volume.

[0043] Compared with the second flow control valve, the entire chamber of the self-operated flow control valve uses the cooling water channel as the chamber. The entire chamber is obviously larger than the chamber of the existing flow control valve. Under the premise that the volume of the valve core components is the same, the upper and lower chambers of the self-operated flow control valve will be much larger, allowing large-flow, high-velocity liquids to flow through the valve core components, that is, the adjustable flow range is larger, which can meet the flow control needs of large flows in the cooling water channel.

[0044] In addition, since the flow rate flowing through the valve body = the pressure difference between the upper and lower chambers × the cross-sectional area of ​​the valve port, if the pressure difference between the upper and lower chambers is the same, and the volume of the valve core components is the same, the self-operated flow control valve uses the upper and lower sides of the cooling water channel and its side walls as the valve housing, which makes the cross-sectional area of ​​the valve port larger. Compared with the existing second type of flow control valve, which is opened from the side perpendicular to the axial direction, the valve port of the self-operated flow control valve is set in the middle of the axial direction, and the cross-sectional area of ​​the valve port is larger, thereby meeting the flow control needs of large flows in the cooling water channel.

[0045] Moreover, this self-operated flow control valve is a self-operated automatic flow regulating valve. It does not require external force to drive it. It only relies on the pressure of the regulated medium itself and its medium pressure change as a power source. It automatically adjusts according to the pre-set flow setting value. The pre-set flow setting value can be determined by the structural design of the valve core component.

[0046] Therefore, the self-operated flow control valve of the utility model has the following advantages:

[0047] First, the self-operated flow control valve is embedded in the cooling water channel structure and integrated with the cooling water channel. No additional valve housing is required, which realizes reasonable reuse of the structure, simplifies the valve body structure, is compact and easy to produce, assemble, repair and replace. In addition, the structure is relatively simple and can meet the cooling water channel flow control scenarios with strict requirements on the structure volume.

[0048] Second, the self-operated flow control valve uses the cooling water channel as a chamber, and the entire chamber is obviously larger. Under the premise that the volume of the valve core component is the same, the chamber of the self-operated flow control valve will be much larger, allowing large-flow, high-velocity liquids to flow through the valve core component. In addition, the cross-sectional area of ​​the valve port is enlarged, which can meet the flow control requirements of large flows in the cooling water channel. That is, the adjustable flow range is large, which can meet the flow control requirements of large flows in the cooling water channel.

[0049] Third, this self-operated flow control valve is a self-operated automatic flow regulating valve. It does not require external force to drive, but only relies on the pressure of the regulated medium itself and its medium pressure change as the power source. It automatically adjusts according to the pre-set flow setting value. The pre-set flow setting value is determined by the structural design of the valve core component.

[0050] Furthermore, the first gland component includes a first gland 1 and a first bushing 2. The first gland 1 is provided with a boss 101. The outer wall of the boss 101 is interference fit with the inner wall of the first bushing 2. The side of the first gland 1 facing away from the boss 101 is crimped with one side of the cooling water channel.

[0051] like Figure 4 , Figure 7 and Figure 8 As shown, the first gland 1 is connected to the first bushing 2 by interference fit between the outer wall of the boss 101 and the inner wall of the first bushing 2, and the side of the first gland 1 facing away from the boss 101 is crimped with one side of the cooling water channel. Compared with the solution of directly setting the boss 101 on one side of the cooling water channel to connect with the first bushing 2, the utility model sets the first gland 1 separately, so that only the first gland 1 can be replaced after the boss 101 is worn, which is convenient for maintenance and effectively avoids the waste caused by the scrapping of the entire cooling water channel after the boss 101 is worn.

[0052] Furthermore, the outer edge of the boss 101 is provided with one of a plurality of mating keys and mating keyways 102 evenly distributed along the circumference, and the first bushing 2 is provided with another of a plurality of mating keys and mating keyways 102 evenly distributed along the circumference, and the mating keys and mating keyways 102 are radially positioned and matched.

[0053] like Figure 7In one embodiment shown, a plurality of mating key grooves 102 evenly distributed along the circumferential direction are provided on the outer edge of the boss 101, and a corresponding mating key (not shown in the drawings) is provided on the first bushing 2. By radially positioning and matching the mating key and the mating key groove 102, a quick connection of the first pressure cover 1 and the first bushing 2 can be achieved.

[0054] Furthermore, a first spline 103 is provided on the outer side wall of the boss 101 , and a second spline which is interference-fitted with the first spline 103 is provided on the inner side wall of the first bushing 2 .

[0055] like Figure 8 In another embodiment shown, a first spline 103 is provided on the outer wall of the boss 101, and a second spline is provided on the inner wall of the first bushing 2. The first spline 103 and the second spline are positioned and interference fit to achieve fixed connection between the first gland 1 and the first bushing 2. Figure 7 The keyway fit shown can better ensure the tightness of the assembly and ensure that the first bushing 2 can be firmly installed on the first gland 1.

[0056] The above-mentioned implementation is only an example of the present invention. The present invention does not specifically limit the matching structure of the first gland 1 and the first bushing 2, and other structures are also possible.

[0057] Furthermore, a plurality of first openings 201 evenly distributed along the circumferential direction are provided on the side wall of the first bushing 2, and the plurality of first openings 201 are suitable for communicating with the water outlet side of the cooling water channel.

[0058] like Figure 7 and Figure 8 As shown, through the multiple first openings 201, the coolant flowing through the valve core component can flow to the water outlet side of the cooling water channel more smoothly and evenly.

[0059] Furthermore, the second gland component includes a second gland 3 and a second bushing 4. The second gland 3 is provided with a convex ring 301. The outer wall of the convex ring 301 is interference fit with the inner wall of the second bushing 4. The side of the second gland 3 facing away from the convex ring 301 is crimped with the other side of the cooling water channel.

[0060] like Figure 1 and 4 As shown, the second gland 3 and the second bushing 4 are connected by interference fit between the outer wall of the convex ring 301 and the inner wall of the second bushing 4, and the side of the second gland 3 facing away from the convex ring 301 is crimped with the other side of the cooling water channel.

[0061] Similar to the design principle of the first gland 1, the second gland 3 is separately provided so that only the second gland 3 needs to be replaced after the convex ring 301 is worn, which is convenient for maintenance and effectively avoids the waste caused by the scrapping of the entire cooling water channel after the convex ring 301 is worn.

[0062] Furthermore, the second gland 3 is provided with a second opening 302 spaced apart from the convex ring 301 , and the second opening 302 is suitable for communicating with the water inlet side of the cooling water channel.

[0063] Combination Figure 1 As shown, a second opening 302 is provided on the second gland 3 and is spaced apart from the convex ring 301 so that the coolant can pass through the second opening 302 into the space formed between the second gland component and the valve core component.

[0064] Furthermore, the valve core component includes a valve core 5, an elastic member 6 and a third pressure cover 7. The valve core 5 is arranged in the second pressure cover component, the third pressure cover 7 is arranged on the side of the valve core 5 away from the second pressure cover component, the elastic member 6 is arranged in the third pressure cover 7 and abuts against the first pressure cover component, and the side of the valve core 5 away from the second pressure cover component abuts against the third pressure cover 7 under the action of the elastic member 6.

[0065] like Figure 4 As shown, with the third gland 7 as the dividing line, the side of the third gland 7 close to the valve core 5 is the second gland component and the valve core 5, and the chamber formed by the third gland 7, the second gland component and the valve core 5 is the second chamber 13; the side of the third gland 7 away from the valve core 5 is the first gland component and the elastic member 6, and the chamber formed by the third gland 7 and the first gland component is the first chamber 12. Among them, the elastic member 6 is arranged in the third gland 7, abutting against the first gland component, and under the action of the elastic member 6, the side of the valve core 5 away from the second gland component is always abutting against the third gland 7.

[0066] In addition, the third gland 7 is separated from the valve core 5 as a separate part, so that the upper and lower components can be completely separated, which is convenient for parts disassembly and replacement. Also, the elastic member 6 is arranged in the third gland 7 and connected to the boss 101 of the first gland 1 through the first bushing 2, and under the action of the elastic member 6, the first bushing 2 and the third gland 7 are clearance-fitted.

[0067] Specifically, the coolant first enters the second chamber 13 formed by the third gland 7, the second gland component and the valve core 5. Under the pressure of the coolant, the valve core 5 moves to the side close to the third gland 7, and then the third gland 7 squeezes the elastic member 6 to compress the elastic member 6, thereby opening the cooperation between the third gland 7 and the side wall of the cooling water channel to form a valve port and realize the connection of the cooling water channel. When the cooling water channel is connected, the coolant enters the first chamber 12 formed by the third gland 7, the first bushing 2 and the first gland 1. At this time, the force of the valve core 5 is: the lower side (the side away from the third gland 7) = the lower coolant pressure × the force area of ​​the valve core 5; the upper side (the side close to the third gland 7) = the thrust of the elastic member 6 + the upper coolant pressure × the force area of ​​the valve core 5. When the thrust on the lower side of the valve core 5 is greater than the thrust on the upper side, the valve core 5 moves upward to increase the valve port, and the pressure of the upper coolant increases accordingly, so that the upper and lower thrusts on the valve core 5 are balanced again; when the thrust on the upper side of the valve core 5 is greater than the thrust on the lower side, the valve core 5 moves downward to reduce the valve port, and the pressure of the upper coolant decreases accordingly, so that the upper and lower thrusts on the valve core 5 are balanced again. By maintaining the dynamic balance of the thrust on the valve core 5, the pressure difference between the upper and lower coolants is controlled to always be equal to the thrust of the elastic member 6 / the force area of ​​the valve core 5.

[0068] It should be noted that the third gland 7 is suitable for limiting the side wall of the cooling water channel to limit the movement of the third gland 7 toward the side of the valve core 5. In this way, when the third gland 7 is pushed by the valve core 5, the third gland 7 moves toward one side of the first gland component to form a valve port between the third gland 7 and the side wall of the cooling water channel, so that the coolant flows through. When the valve core 5 moves downward to close the valve port, the outer periphery of the third gland 7 is limited to the side wall of the cooling water channel to achieve the closure of the valve port.

[0069] To sum up, since the flow rate flowing through the valve body = the pressure difference between the upper and lower chambers × the cross-sectional area of ​​the valve port, if the pressure difference between the upper and lower chambers is the same, and the volume of the valve core components is the same, the side wall of the cooling water channel is used as the valve housing, so that the cross-sectional area of ​​the valve port will become larger, and the valve port is arranged in the middle position in the axial direction, the cross-sectional area of ​​the valve port is larger, which can meet the flow control needs of large flow in the cooling water channel.

[0070] In addition, the self-acting flow control valve of the present application does not need to be driven by external force, but only relies on the pressure of the regulated medium itself and the change of the medium pressure as the power source, and automatically adjusts according to the preset flow rate setting value. The preset flow rate setting value is determined by the elastic coefficient and pre-compression amount of the elastic member 6. Once the elastic member 6 is determined, the preset flow rate is also determined. The flow rate of the cooling water channel can be changed by replacing the elastic member 6.

[0071] The elastic member 6 in the embodiment of the present application is a coil spring, which is only used to demonstrate the present application and does not constitute a limitation on the protection scope of the present application. Any equivalent modification or change made by a person skilled in the art based on the disclosure of the present invention (such as the elastic member 6 adopting a butterfly spring, a wave spring, a rubber block, etc.) shall be included in the protection scope recorded in the claims.

[0072] Furthermore, the self-operated flow control valve also includes: a guide slide cover 8, which is suitable for being connected to the side wall of the cooling water channel, the guide slide cover 8 is arranged around the outer periphery of the third pressure cover 7, and the guide slide cover 8 cooperates with the outer periphery of the third pressure cover 7 to limit the movement of the third pressure cover 7 toward the side of the valve core 5.

[0073] like Figure 4 As shown, a guide slide cover 8 is provided on the side wall of the cooling water channel, so that the guide slide cover 8 and the outer periphery of the third gland 7 are limitedly matched, thereby limiting the movement of the third gland 7 toward the side of the valve core 5. In addition, when the valve core 5 moves toward the side close to the third gland 7, the third gland 7 squeezes the elastic member 6, thereby opening the cooperation between the third gland 7 and the guide slide cover 8 to form a valve port.

[0074] Compared with the above-mentioned limiting cooperation between the side wall of the cooling water channel and the outer periphery of the third pressure cover 7, the guide slide cover 8 is made into a separate component to facilitate replacement of the guide slide cover 8 after it is worn, thereby avoiding waste caused by scrapping the cooling water channel.

[0075] Furthermore, the inner side wall of the guide slide cover 8 is provided with a first conical surface, and the outer side wall of the third pressure cover 7 is provided with a second conical surface which is guided and matched with the first conical surface.

[0076] like Figure 4 As shown, through the guiding cooperation between the first cone surface and the second cone surface, the third pressure cover 7 can be moved relative to the guide slide cover 8, thereby achieving the purpose of opening the valve port, closing the valve port and adjusting the cross-sectional area of ​​the valve port.

[0077] Furthermore, a groove 701 is provided on one side of the third gland 7 close to the valve core 5 , a third conical surface is provided on the inner side wall of the groove 701 , and a fourth conical surface is provided on one end of the valve core 5 close to the third gland 7 to cooperate with the third conical surface for guidance.

[0078] like Figure 4 As shown, the movement of the valve core 5 is transmitted to the third gland 7 through the guiding cooperation of the third cone surface and the fourth cone surface, and then the movement of the third gland 7 is continuously transmitted to the elastic member 6 through the guiding cooperation of the first cone surface and the second cone surface.

[0079] Therefore, the self-operated flow control valve of the present application adopts a cone valve type valve port, the movement stroke of the valve core 5 is small, the response speed is fast, and in addition, the linear correlation between the valve core 5 and the flow is good, which is convenient for accurate flow control.

[0080] Furthermore, the valve core 5 includes a first shaft 501, a second shaft 502 and a third shaft 503 whose radii increase successively along the axial direction, one end of the first shaft 501 is abutted against the third pressure cover 7, at least part of the second shaft 502 and the third shaft 503 are gap-fitted with the inner wall of the second pressure cover component, and the third shaft 503 is limitedly fitted in the second pressure cover component to limit the moving stroke of the valve core 5.

[0081] like Figure 4-Figure 6 As shown, when the valve core 5 moves toward the third pressure cover 7, the first shaft 501 pushes the third pressure cover 7 upward to open the conical surface fit between the third pressure cover 7 and the guide slide cover 8 to produce a valve port. Since the radius of the first shaft 501 is relatively small, the cross-sectional area of ​​the valve port can be larger, thereby increasing the fluid flow rate passing therethrough.

[0082] Furthermore, at least a portion of the second shaft 502 cooperates with the inner wall clearance of the third shaft 503 and the second pressure cover component to ensure that the valve core 5 moves linearly in the axial direction, and under the limiting cooperation between the third shaft 503 with a relatively large radius and the second pressure cover component, the valve core 5 can be limited from moving excessively into the first chamber 12 and affecting the flow rate.

[0083] Furthermore, the inner wall of the second pressure cover component includes at least a first inner wall surface 401 and a second inner wall surface 402 whose inner diameters decrease successively along the axial direction. The first inner wall surface 401 is arranged on the side of the second inner wall surface 402 away from the cooling water channel. The first inner wall surface 401 is clearance-matched with the outer peripheral surface of the second shaft 502, and the second inner wall surface 402 is clearance-matched with the outer peripheral surface of the third shaft 503.

[0084] like Figure 5 and Figure 6 As shown, a limited step is formed between the first inner wall 401 and the second inner wall 402. By the clearance fit between the first inner wall 401 having a relatively large inner diameter and the outer peripheral surface of the second shaft 502, and the clearance fit between the second inner wall 402 having a relatively small inner diameter and the outer peripheral surface of the third shaft 503, the moving stroke of the valve core 5 can be limited while ensuring the linear motion of the valve core 5.

[0085] Specifically, in the embodiment of the present application, the first inner wall surface 401 and the second inner wall surface 402 are formed on the second bushing 4 , the second bushing 4 and the valve core 5 are installed and matched, and the bottom of the valve core 5 abuts against the second gland 3 .

[0086] In addition, a seal 11 is installed on the outer circumferential surface of the second shaft 502 of the valve core 5 to seal between the outer circumferential surface of the second shaft 502 of the valve core 5 and the first inner wall surface 401 of the second bushing 4 .

[0087] The first gland component, the second gland component, the valve core component and the guide slide cover 8 of the present application, except the elastic component 6, can all be made of wear-resistant metal materials to increase the service life of the self-operated flow control valve.

[0088] According to the cooling device of the second embodiment of the utility model, the cooling device comprises: a cooling water channel plate 9, a heat sink 10 and a self-acting flow control valve. A receiving groove 901 is provided in the cooling water channel plate 9, and the heat sink 10 is covered on the cooling water channel plate 9 to form a receiving cavity. The self-acting flow control valve is arranged in the receiving cavity, the first pressure cover component is pressed and matched with the heat sink 10, and the second pressure cover component is pressed at the bottom of the receiving groove 901.

[0089] refer to Figure 1-Figure 4 and Fig. 9 and Fig.10 As shown, the self-operated flow control valve is placed in the receiving groove 901, and is covered on the cooling water channel plate 9 through the heat sink 10 and fixedly connected to the cooling water channel plate 9, so that the first pressure cover component inside the receiving cavity cooperates with the heat sink 10, and the second pressure cover component cooperates with the bottom of the receiving groove 901, thereby realizing the fixation of the valve core component.

[0090] When the components of the self-operated flow control valve need to be replaced, it is only necessary to open the heat sink 10, which is easy to repair and maintain. For example, when the elastic member 6 has insufficient elasticity, the elastic member 6 can be replaced by removing the heat sink 10 and the first gland 1.

[0091] Furthermore, the cooling water channel plate 9 is provided with a first cooling water channel 902 for water outlet and a second cooling water channel 903 for water inlet along its thickness direction, the second cooling water channel 903 is communicated with the second pressure cover component, the first cooling water channel 902 is communicated with the first pressure cover component, and the valve core component selectively connects the first cooling water channel 902 and the second cooling water channel 903.

[0092] In this way, the second cooling water channel 903 is connected with the second gland component, so that the coolant flows into the second chamber 13 formed by the third gland 7, the second gland component and the valve core 5 through the second opening 302 of the second gland 3. Under the pressure of the coolant, the valve core 5 moves to the side close to the third gland 7, so that the third gland 7 squeezes the elastic member 6 to compress the elastic member 6, thereby opening the cooperation between the third gland 7 and the side wall of the cooling water channel, forming a valve port, and realizing the connection of the cooling water channel. When the cooling water channel is connected, the coolant enters the first chamber 12 formed by the third gland 7, the first bushing 2 and the first gland 1. Since the first cooling water channel 902 is connected with the first gland component, the coolant in the first chamber 12 can flow to the first cooling water channel 902 through the first opening 201 of the first bushing 2 for cooling and heat dissipation, and finally flows out of the cooling water channel plate 9.

[0093] Furthermore, a plurality of fins 1001 are provided on one side of the heat sink 10 facing the cooling water channel plate 9, a portion of the fins 1001 are provided in the first cooling water channel 902, and another portion of the fins 1001 are provided in the receiving groove 901 and are arranged around the outer periphery of the first pressure cover component.

[0094] See Fig. 9 and Fig.10 As shown, a plurality of fins 1001 are provided on the heat sink 10, a portion of the fins 1001 are provided in the first cooling water channel 902, and another portion of the fins 1001 are provided around the periphery of the first pressure cover component, so that when the coolant flows from the first chamber 12 to the first cooling water channel 902, cooling and heat dissipation can be performed, thereby improving the heat dissipation effect of the cooling device and achieving maximum space utilization.

[0095] This application Fig. 9 and Fig.10 The embodiments shown are only used to illustrate the present application and do not constitute a limitation on the protection scope of the present application. Any equivalent modifications or changes made by a person skilled in the art based on the contents disclosed in the present invention should be included in the protection scope recorded in the claims.

[0096] Therefore, the self-operated flow control valve of the utility model has the following advantages:

[0097] First, the self-operated flow control valve is embedded in the cooling water channel structure and integrated with the cooling water channel. No additional valve housing is required, which realizes reasonable reuse of the structure, simplifies the valve body structure, is compact and easy to produce, assemble, repair and replace. In addition, the structure is relatively simple and can meet the cooling water channel flow control scenarios with strict requirements on the structure volume.

[0098] Second, the self-operated flow control valve uses the cooling water channel as a chamber, and the entire chamber is obviously larger. Under the premise that the volume of the valve core component is the same, the chamber of the self-operated flow control valve will be much larger, allowing large-flow, high-velocity liquids to flow through the valve core component. In addition, the cross-sectional area of ​​the valve port is enlarged, which can meet the flow control requirements of large flows in the cooling water channel. That is, the adjustable flow range is large, which can meet the flow control requirements of large flows in the cooling water channel.

[0099] Third, this self-operated flow control valve is a self-operated automatic flow regulating valve. It does not require external force to drive, but only relies on the pressure of the regulated medium itself and its medium pressure change as the power source. It automatically adjusts according to the pre-set flow setting value. The pre-set flow setting value is determined by the structural design of the valve core component.

[0100] Fourthly, the self-operated flow control valve adopts a cone valve type valve port, the movement stroke of the valve core 5 is small, and the response speed is fast. In addition, the linear correlation between the valve core 5 and the flow is good, which is convenient for accurate flow control.

[0101] Fifth, this self-operated flow control valve is embedded in the cooling water channel structure and integrated with the cooling water channel, which can achieve a steady flow of coolant, thereby ensuring the stable heat dissipation effect of the cooling object (such as the IGBT module in the electric control box, bus capacitor, etc.) during the entire cooling process, reducing the temperature fluctuation of the cooling object and improving the reliability of the cooling object.

[0102] Sixth, all components of this self-operated flow control valve can be disassembled and replaced, making it easy to repair and maintain.

[0103] 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 orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0104] 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 utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0105] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate 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 self-operated flow control valve, characterized in that: include: Valve core parts; The first pressure cover component and the second pressure cover component are respectively arranged at the two axial ends of the valve core component. The first pressure cover component and the second pressure cover component are respectively suitable for being crimped with the two sides of the cooling water channel to fix the valve core component. The two sides of the cooling water channel and its side walls constitute the valve housing of the self-operated flow control valve.

2. The self-operated flow control valve according to claim 1, characterized in that: The first gland component includes a first gland and a first bushing. The first gland is provided with a boss. The outer wall of the boss is interference fit with the inner wall of the first bushing. The side of the first gland facing away from the boss is crimped with one side of the cooling water channel.

3. The self-operated flow control valve according to claim 2, characterized in that: The outer edge of the boss is provided with one of a plurality of mating keys and mating keyways evenly distributed along the circumference, and the first bushing is provided with another of a plurality of mating keys and mating keyways evenly distributed along the circumference, and the mating keys and mating keyways are radially positioned and matched.

4. The self-operated flow control valve according to claim 2, characterized in that: The outer side wall of the boss is provided with a first spline, and the inner side wall of the first bushing is provided with a second spline which is interference fit with the first spline.

5. The self-operated flow control valve according to claim 2, characterized in that: A plurality of first openings evenly distributed along the circumferential direction are provided on the side wall of the first bushing, and the plurality of first openings are suitable for communicating with the water outlet side of the cooling water channel.

6. The self-operated flow control valve according to claim 1, characterized in that: The second gland component includes a second gland and a second bushing. The second gland is provided with a convex ring. The outer wall of the convex ring is interference fit with the inner wall of the second bushing. The side of the second gland facing away from the convex ring is crimped with the other side of the cooling water channel.

7. The self-operated flow control valve according to claim 6, characterized in that: The second gland is provided with a second opening spaced apart from the convex ring, and the second opening is suitable for communicating with the water inlet side of the cooling water channel.

8. The self-operated flow control valve according to claim 1, characterized in that: The valve core component includes a valve core, an elastic member and a third pressure cover, the valve core is arranged in the second pressure cover component, the third pressure cover is arranged on the side of the valve core away from the second pressure cover component, the elastic member is arranged in the third pressure cover and abuts against the first pressure cover component, and the side of the valve core away from the second pressure cover component abuts against the third pressure cover under the action of the elastic member.

9. The self-operated flow control valve according to claim 8, characterized in that: Also includes: The guide slide cover is suitable for being connected to the side wall of the cooling water channel. The guide slide cover is arranged around the outer periphery of the third pressure cover, and the guide slide cover cooperates with the outer periphery of the third pressure cover to limit the movement of the third pressure cover toward the valve core.

10. The self-operated flow control valve according to claim 9, characterized in that: The inner side wall of the guide slide cover is provided with a first conical surface, and the outer side wall of the third pressure cover is provided with a second conical surface which is guided and matched with the first conical surface.

11. The self-operated flow control valve according to claim 8, characterized in that: A groove is provided on one side of the third pressure cover close to the valve core, a third conical surface is provided on the inner side wall of the groove, and a fourth conical surface is provided on one end of the valve core close to the third pressure cover to cooperate with the third conical surface for guidance.

12. The self-operated flow control valve according to claim 8, characterized in that: The valve core includes a first shaft, a second shaft and a third shaft with radii increasing successively along the axial direction, one end of the first shaft is abutted against the third pressure cover, at least part of the second shaft and the third shaft are gap-fitted with the inner wall of the second pressure cover component, and the third shaft is limitedly fitted in the second pressure cover component to limit the movement stroke of the valve core.

13. The self-operated flow control valve according to claim 12, characterized in that The inner wall of the second pressure cover component includes at least a first inner wall surface and a second inner wall surface whose inner diameters decrease successively along the axial direction. The first inner wall surface is arranged on the side of the second inner wall surface away from the cooling water channel. The first inner wall surface is loosely matched with the outer peripheral surface of the second shaft, and the second inner wall surface is loosely matched with the outer peripheral surface of the third shaft.

14. The self-operated flow control valve according to claim 1, characterized in that: The first gland component is suitable for communicating with the water outlet side of the cooling water channel, and the second gland component is suitable for communicating with the water inlet side of the cooling water channel.

15. A cooling device, characterized in that: include: A cooling water channel plate, wherein a receiving groove is provided in the cooling water channel plate; A heat dissipation plate, the heat dissipation plate is covered on the cooling water channel plate to form a receiving cavity; The self-operated flow control valve according to any one of claims 1 to 14, wherein the self-operated flow control valve is arranged in the accommodating cavity, the first pressure cover component is crimped into the heat sink and the second pressure cover component is pressed into the bottom of the accommodating groove.

16. The cooling device according to claim 15, characterized in that The cooling water channel plate is provided with a first cooling water channel for water outlet and a second cooling water channel for water inlet along its thickness direction, the second cooling water channel is communicated with the second gland component, the first cooling water channel is communicated with the first gland component, and the valve core component selectively connects the first cooling water channel and the second cooling water channel.

17. The cooling device according to claim 16, characterized in that A plurality of fins are provided on a plate surface of the heat sink facing the receiving groove, a part of the fins are provided in the first cooling water channel, and another part of the fins are provided in the receiving groove and are arranged around the outer periphery of the first gland component.

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