Control valve, temperature adjusting system and vehicle

Abstract

The utility model discloses a control valve, a temperature adjusting system and a vehicle, and the control valve comprises a valve body assembly, a temperature adjusting assembly and a control assembly, the piston assembly is movably arranged in the accommodating cavity; the driving assembly is suitable for driving the piston assembly to move in the containing cavity; and at least part of the retainer is located between the valve body assembly and the piston assembly, and the retainer is configured to limit movement of the piston assembly relative to the valve body assembly when the driving assembly stops driving. Therefore, the movement of the piston assembly can be accurately controlled, interference of other parts on the movement of the piston assembly is avoided, accurate adjustment of the fluid flow is achieved, and the operation stability of the control valve is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and in particular to a control valve, a temperature regulation system, and a vehicle. Background Technology

[0002] Heat pump systems use control valves to regulate the flow and pressure of the refrigerant. The opening and closing of these valves achieves precise temperature control, ensuring efficient and stable operation under various environmental conditions. High-quality control valves significantly improve the heating speed, cooling efficiency, and temperature stability of the heat pump system, providing users with a more comfortable experience. Furthermore, precise valve adjustment effectively extends the lifespan of the heat pump system and reduces maintenance costs.

[0003] In related technologies, control valves control valve opening by driving piston movement through a rotor, and elastic elements are set to buffer the movement of the piston. However, when the rotor stops driving, the elastic elements will continue to drive the piston movement due to deformation, resulting in unstable movement of the control valve. Utility Model Content

[0004] This application provides a control valve that effectively improves the stability of the control valve, thereby at least partially solving the above-mentioned technical problems.

[0005] To achieve the above objectives, according to a first aspect of this application, a control valve is provided, comprising:

[0006] A valve body assembly having a receiving cavity;

[0007] A piston assembly is movably disposed within the receiving cavity;

[0008] A drive assembly adapted to move the piston assembly within the receiving cavity;

[0009] A stop, at least partially located between the valve body assembly and the piston assembly, is configured to restrict the movement of the piston assembly relative to the valve body assembly when the drive assembly stops driving.

[0010] In some embodiments, the piston assembly includes a screw, the valve body assembly includes a valve core, and the screw and the valve core are rotatably connected.

[0011] In some embodiments, the screw includes a connecting portion, and a stop is disposed on the connecting portion, the stop restricting the movement of the screw relative to the valve core.

[0012] In some embodiments, the stop is interference-fitted with the connecting portion.

[0013] In some embodiments, the connecting portion is a through hole extending radially along the screw, the stop member is elongated, and the stop member includes a mounting portion that passes through the through hole.

[0014] In some embodiments, the connecting portion is a groove circumferentially disposed on the screw, and the stop member is annular and sleeved on the groove.

[0015] In some embodiments, the stop is an elastic element.

[0016] In some embodiments, the stop includes a friction portion that abuts against the receiving cavity.

[0017] In some embodiments, the valve body assembly includes a valve core, the valve core including a drive portion and a guide portion, the friction portion abutting against the guide portion.

[0018] In some embodiments, the length of the stop is greater than the inner diameter of the guide portion.

[0019] In some embodiments, the friction part is an arc surface that mates with the guide part.

[0020] In some embodiments, the piston assembly further includes an elastic element, the stop being configured to limit the elastic element from causing the piston assembly to move relative to the valve body assembly.

[0021] In some embodiments, the drive assembly includes a rotor adapted to rotate under the influence of a magnetic field to drive the piston assembly to move relative to the valve body assembly, the stop having frictional force between it and the valve body assembly, and the driving force of the rotor being greater than the frictional force.

[0022] According to a second aspect of this application, a temperature control system is provided, including the control valve described above.

[0023] According to a third aspect of this application, a vehicle is provided, including the control valve described above or the temperature regulation system described above.

[0024] The control valve of this application embodiment includes: a valve body assembly having a receiving cavity; a piston assembly movably disposed within the receiving cavity; a drive assembly adapted to drive the piston assembly to move within the receiving cavity; and a stop member, at least partially located between the valve body assembly and the piston assembly, the stop member being configured to restrict the movement of the piston assembly relative to the valve body assembly when the drive assembly stops driving. By providing the stop member, when the drive assembly stops driving, the piston assembly is restricted from continuing to move, thus preventing interference from other components and allowing for more stable control of the valve's opening and closing, and more precise flow regulation.

[0025] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0028] Figure 1 This is a cross-sectional schematic diagram of a control valve according to an embodiment of this application.

[0029] Figure 2 This is a partial cross-sectional schematic diagram of a control valve according to one embodiment of this application.

[0030] Figure 3 This is a partial cross-sectional schematic diagram of a control valve according to another embodiment of this application.

[0031] Figure 4 This is a schematic diagram of the screw structure according to an embodiment of this application.

[0032] Figure 5 This is a structural schematic diagram of the stop member according to an embodiment of this application.

[0033] Figure 6 This is a structural schematic diagram of the valve core and positioning ring according to an embodiment of this application.

[0034] Figure label:

[0035] 100. Control valve;

[0036] 10. Valve body assembly; 11. Receiving cavity; 12. Valve core; 121. Drive unit; 122. Guide unit; 13. Positioning ring; 131. Embedded part; 132. Lower positioning part; 14. Fluid inlet; 15. Fluid outlet;

[0037] 20. Driver components;

[0038] 30. Piston assembly; 31. Screw; 311. Connecting part; 312. Clamping part; 313. Pressure balancing part; 314. Drive structure; 32. Elastic element; 33. Sleeve; 34. Bearing; 35. Piston;

[0039] 40. Stop; 41. Mounting part; 42. Friction part;

[0040] 50. Stop assembly. Detailed Implementation

[0041] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0042] In the description of this application, it should be understood that the terms "upper", "lower", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] In the description of this application, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, article, or apparatus.

[0045] Control valve 100 is a valve that changes fluid flow rate through power operation. For example, the flow rate is controlled by controlling the size of the opening through the movement of a piston. Therefore, the accuracy of piston-controlled flow rate depends on the precision of the control system and the stability of the mechanical structure. In related technologies, a spring is added to buffer the piston. However, when the power stops, the spring deforms and continues to drive the piston, affecting flow rate control. For example, when the valve is closed, the screw continues to rotate downwards, further compressing the spring to provide sufficient pressure to the piston for a stable seal. Simultaneously, the screw rotation angle needs a relatively stable range to meet the precise control requirements of valve opening. However, after the screw stabilizes downwards, the increased spring force provides an upward rotational force, causing the screw to rotate back, making the original downward rotation angle unstable and failing to meet control requirements.

[0046] To address the aforementioned problems in the above-mentioned technologies, this application provides a control valve 100, in which a stop 40 is provided between the piston assembly and the valve body assembly 10. The stop 40 restricts the relative movement of the piston assembly relative to the valve body assembly 10. When the drive stops, the piston assembly stops moving and is not affected by other components such as springs, thereby increasing the stability of the mechanical mechanism and enabling more precise control.

[0047] The control valve 100, thermal management system, and vehicle provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0048] like Figures 1-3 As shown, in a first aspect, embodiments of this application provide a control valve 100, comprising: a valve body assembly 10 having a receiving cavity 11; a piston assembly movably disposed within the receiving cavity 11; a drive assembly adapted to drive the piston assembly to move within the receiving cavity 11; and a stop 40 at least partially located between the valve body assembly 10 and the piston assembly, the stop 40 being configured to restrict the movement of the piston assembly relative to the valve body assembly 10 when the drive assembly stops driving.

[0049] Specifically, the valve body assembly 10 is the main body of the valve, responsible for connecting and supporting other valve components, and forming a channel for controlling fluid flow. A receiving cavity 11 is formed on the valve body assembly 10, within which the piston assembly 30 can move, opening and closing the valve body assembly 10 to control the flow rate. The drive assembly 20 provides driving force to the piston assembly 30, causing it to move within the receiving cavity 11. When the piston assembly 30 moves away from the valve port, fluid can enter from the fluid inlet 14 and flow out through the fluid outlet 15. A stop 40 is provided between the valve body assembly 10 and the drive assembly 20. The stop 40 interacts with the valve body assembly 10 and the drive assembly 20 through forces such as friction, which restricts the movement of the piston assembly 30 and the valve body assembly 10. When the driving force of the drive assembly 20 stops, the piston assembly 30 stops moving relative to the valve body assembly 10.

[0050] It is understood that the stop 40 can be provided on the valve body assembly 10 or on the piston assembly 30. It can be sleeved on the piston assembly 30 or inserted into the piston assembly 30. The stop can be ring-shaped or strip-shaped, as long as it can restrict the movement of the piston assembly 30 relative to the valve body assembly 10. This embodiment does not impose too many restrictions.

[0051] In some embodiments, the drive component 20 may use electromagnetic force to drive the valve core 12 to move, which has the characteristics of fast response speed, high control accuracy and easy use.

[0052] According to the control valve 100 of this application embodiment, the piston assembly 30 is arranged to facilitate the opening and closing of the control valve 100. The flow rate can be adjusted by controlling the distance between the piston assembly 30 and the fluid outlet 15. The drive assembly 20 can drive the piston assembly 30 to move relative to the valve body assembly 10, thereby regulating the flow rate of the fluid flowing through the fluid outlet 15. A stop member 40 is provided between the valve body assembly 10 and the piston assembly 30. When the drive assembly 20 stops driving, the stop member 40 can restrict the movement of the piston assembly 30 relative to the valve body assembly 10, improve the stability of the movement of the piston assembly 30, and increase the adjustment accuracy of the control valve 100.

[0053] In some embodiments, the piston assembly 30 includes a screw 31, and the valve body assembly 10 includes a valve core 12, with the screw 31 and the valve core 12 rotatably connected.

[0054] The valve core 12 of the valve body assembly 10 has a through hole in the middle, and an internal thread is provided in the middle of the through hole. The piston assembly 30 includes a screw 31, which is disposed in the through hole of the valve core 12. The upper part of the screw 31 has an external thread, which engages with the internal thread of the valve core 12, so that the rotational motion of the screw 31 can be converted into the axial motion of the piston assembly 30.

[0055] In some embodiments, the valve body assembly includes a valve body and a positioning ring 13. The positioning ring 13 includes an inner portion 131 and a lower positioning portion 132. The inner portion 131 is used to be integrally injection molded with the valve core 12 and fixed inside the valve core 12, and the lower positioning portion 132 is used to abut against the valve body and limit its position.

[0056] In some embodiments, the screw 31 includes a connecting portion 311, and a stop 40 is disposed on the connecting portion 311, the stop 40 restricting the movement of the screw 31 relative to the valve core 12.

[0057] The stop 40 is located at the screw 31 of the piston assembly 30. The stop 40 at least partially abuts against the valve core 12. The stop 40 and the valve core 12 interact with each other. When the screw 31 moves relative to the valve core 12, the friction between the stop 40 and the valve core 12 restricts the movement of the screw 31 in the valve core 12. Therefore, a certain driving force is required to drive the screw 31 to move. When the external force is small, the screw 31 will not move or rotate relative to the valve core 12, thus increasing the stability of the piston assembly 30's movement.

[0058] like Figure 4 As shown, in some embodiments, the screw 31 includes a clamping part 312, a pressure balancing part 313, and a drive structure 314. The clamping part 312 is used to hold the screw 31 during the assembly process, preventing the grippers from slipping on the screw 31; the pressure balancing part 313 is a vent hole for connecting the internal space with the external space, balancing the air pressure during the operation of the screw 31, and enhancing the working stability of the control valve 100; the drive structure 314 is an external thread structure for engaging with the internal threads of the valve core 12 to rotate, enabling the screw 31 to move stably up and down.

[0059] In some embodiments, the connecting portion 311 is a through hole that extends radially along the screw 31, and the stop member 40 is elongated and includes a mounting portion 41 that passes through the through hole.

[0060] like Figure 4 and Figure 5 As shown, the connecting part 311 is a through hole that extends radially along the screw 31. The stop member 40 is elongated and includes a mounting part 41 that passes through the through hole. This facilitates the installation and removal of the stop member 40. The through hole can also limit the axial displacement of the stop member 40, allowing it to be fixed between the valve body assembly 10 and the piston assembly 30.

[0061] In some embodiments, the connecting portion 311 is a groove surrounding the screw 31, and the stop member 40 is annular and sleeved on the groove.

[0062] like Figure 3As shown, the connecting part 311 is a groove surrounding the screw 31, and the stop 40 is annular. When installed, the annular stop 40 is located at the bottom of the groove of the connecting part 311, which can prevent the stop 40 from shifting or falling off during operation, thereby ensuring the connection effect. Therefore, the connection between the stop 40 and the screw 31 is more secure.

[0063] In some embodiments, the mounting portion 41 and the connecting portion 311 are interference-fitted.

[0064] The mounting part 41 and the connecting part 311 are interference-fitted, meaning there is a certain amount of interference between the stop part 40 and the connecting part 311. This allows the actual dimensions of the two parts to fit tightly together during assembly, ensuring a secure connection between the mating parts and preventing the stop shaft from moving or falling out. The interference fit ensures a high-precision fit between the stop part 40 and the connecting part, which helps improve the performance and reliability of mechanical products.

[0065] In some embodiments, the stop 40 is an elastic element.

[0066] The elastic stop 40 utilizes its own elastic deformation to generate a fastening force, thereby preventing loosening due to vibration or external forces and enhancing the stability of the connection. Elastic materials typically possess good wear resistance and fatigue resistance, improving the smoothness of equipment operation and extending its service life. Furthermore, the elastic nature of the stop 40 simplifies its installation and removal.

[0067] In some embodiments, the stop 40 includes a friction portion 42 that abuts against the receiving cavity 11.

[0068] The stop 40 can restrict the relative movement between the piston assembly 30 and the valve body assembly 10. Therefore, there is an interaction force between the stop 40 and the valve body assembly 10. Friction parts 42 are provided at both ends of the stop 40. The friction parts 42 abut against the valve body assembly 10. When the piston assembly 30 and the valve body assembly 10 move relative to each other or attempt to move relative to each other, resistance will be generated between the friction parts 42 and the valve body.

[0069] It is understood that when the stop 40 is elongated, the friction part 42 can be provided at both ends of the stop 40, or when the stop 40 is annular, the friction part 42 can be provided on the outer periphery of the stop 40. This embodiment does not impose too many restrictions.

[0070] like Figure 6 As shown, in some embodiments, the valve body assembly 10 includes a valve core 12, which includes a drive portion 121 and a guide portion 122, with the friction portion 42 abutting against the guide portion 122.

[0071] The valve core 12 includes a drive portion 121 and a guide portion 122. The drive portion 121 has an internal thread structure and is used to cooperate with the piston assembly 30 to move the piston assembly 30 up and down within the valve core 12. The guide portion 122 controls the radial position of the piston assembly 30 within the valve core 12, reducing the risk of piston assembly 30 swaying. The friction portion 42 abuts against the guide portion 122, thus limiting the movement of the piston assembly 30 relative to the guide portion 122. The guide portion 122 can be a cylindrical structure, providing a uniform contact surface, so that the force between the friction portion 42 and the guide portion 122 remains stable during movement. This ensures that the object maintains high-precision position and speed control during movement, thereby achieving more accurate and stable motion.

[0072] In some embodiments, the length of the stop 40 is greater than the inner diameter of the guide portion 122.

[0073] The length of the stop 40 is greater than the inner diameter of the guide portion 122. Therefore, when the stop 40 is located inside the guide portion 122, the stop 40 will exert a certain force on the guide portion 122. Thus, when the piston assembly 30 moves relative to the valve core 12, the interaction between the stop 40 and the guide portion 122 will restrict the movement of the piston assembly 30.

[0074] In some embodiments, the friction part 42 is an arc surface that mates with the guide part 122.

[0075] The guide part 122 can be a cylindrical structure, and the friction part 42 is an arc surface that mates with the guide part 122. Therefore, the friction part 42 and the guide part 122 can make full contact, avoiding the influence of the external environment on the contact between the friction part 42 and the guide part 122, making the movement between the components more stable and accurate.

[0076] In some embodiments, the piston assembly 30 further includes an elastic element 32, and a stop 40 is configured to limit the movement of the piston assembly 30 relative to the valve body assembly 10 caused by the elastic element 32.

[0077] When the control valve 100 is in the closed state, the screw 31 continues to rotate downwards. At this time, the elastic element is further compressed, providing sufficient pressure to the piston to ensure a stable seal. Simultaneously, the rotation angle of the screw 31 needs to be within a relatively stable range to meet the precise control requirements for valve opening. The elastic element 32 can provide a certain buffering effect during the movement of the piston assembly 30, improving the stability of the piston assembly 30 and thus extending the service life of the control valve 100.

[0078] In some embodiments, the piston assembly further includes a sleeve 33 and a bearing 34. The sleeve 33 is used to place and position the elastic element 32, and the bearing 34 is used to support and reduce friction, which can improve the operating efficiency and service life of the control valve 100.

[0079] In some embodiments, the drive assembly 20 includes a rotor adapted to rotate under the influence of a magnetic field, driving the piston assembly 30 to move relative to the valve body assembly 10, with the stop 40 having frictional force with the valve body assembly 10, and the driving force of the rotor being greater than the frictional force.

[0080] The drive assembly 20 includes a rotor, and a stator (not shown in the figure) is disposed outside the drive assembly 20. The stator can generate a rotating magnetic field. The main body of the rotor is made of magnetic material, and the rotor rotates under the traction of the rotating magnetic field of the stator. The rotor is fixedly connected to the piston assembly 30. When the rotor rotates, it can drive the piston assembly 30 to rotate together. There is friction between the stop member 40 and the valve body assembly 10. The driving force of the rotor is greater than the friction force. Therefore, when the rotor drives the valve body assembly 10 to move, the piston assembly 30 and the valve body assembly 10 can move relative to each other.

[0081] It is understandable that the frictional force is less than the driving force so as not to affect the normal operation of the valve; at the same time, the frictional force is greater than the axial component of the frictional force between the screw 31 and the valve core 12 threads, so as to achieve the stopping effect.

[0082] In some embodiments, the control valve 100 further includes a stop assembly 50, which is fixedly connected to the valve body assembly 10. A stop lever is provided on the drive assembly 20. The stop lever cooperates with the stop assembly 50 to limit the number of rotations of the rotor. The control valve 100 also includes a shield, which, the valve body, and the stop assembly 50 are fixedly connected.

[0083] According to a second aspect of this application, a temperature control system is provided, including the control valve 100 of the above embodiment. This temperature control system possesses all the beneficial effects of the control valve 100 described above, which will not be elaborated further herein.

[0084] According to a third aspect of this application, a vehicle is provided, including the control valve 100 of the above embodiments or the temperature regulation system of the above embodiments. This vehicle possesses all the beneficial effects of the control valve 100 described above, which will not be elaborated further herein.

[0085] In the description of this specification, references to terms such as "one embodiment," "some embodiments," or "example" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0086] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A control valve, characterized in that, include: A valve body assembly having a receiving cavity; A piston assembly is movably disposed within the receiving cavity; A drive assembly adapted to move the piston assembly within the receiving cavity; A stop, at least partially located between the valve body assembly and the piston assembly, is configured to restrict the movement of the piston assembly relative to the valve body assembly when the drive assembly stops driving.

2. The control valve according to claim 1, characterized in that, The piston assembly includes a screw, and the valve body assembly includes a valve core, the screw and the valve core being rotatably connected.

3. The control valve according to claim 2, characterized in that, The screw includes a connecting portion, and the stop is disposed on the connecting portion, the stop restricting the movement of the screw relative to the valve core.

4. The control valve according to claim 3, characterized in that, The stop is interference-fitted with the connecting part.

5. The control valve according to claim 3, characterized in that, The connecting part is a through hole that extends radially along the screw, and the stop member is elongated and includes a mounting part that passes through the through hole.

6. The control valve according to claim 3, characterized in that, The connecting part is a groove surrounding the screw, and the stop is annular and sleeved on the groove.

7. The control valve according to claim 1, characterized in that, The stop is an elastic element.

8. The control valve according to claim 1, characterized in that, The stop includes a friction part that abuts against the receiving cavity.

9. The control valve according to claim 8, characterized in that, The valve body assembly includes a valve core, which includes a drive portion and a guide portion, and the friction portion abuts against the guide portion.

10. The control valve according to claim 9, characterized in that, The length of the stop is greater than the inner diameter of the guide portion.

11. The control valve according to claim 9, characterized in that, The friction part is an arc surface that mates with the guide part.

12. The control valve according to claim 1, characterized in that, The piston assembly further includes an elastic element, and the stop is configured to restrict the elastic element from causing the piston assembly to move relative to the valve body assembly.

13. The control valve according to claim 1, characterized in that, The drive assembly includes a rotor adapted to rotate under the influence of a magnetic field, driving the piston assembly to move relative to the valve body assembly. The stop member has a frictional force with the valve body assembly, and the driving force of the rotor is greater than the frictional force.

14. A temperature control system, characterized in that, Includes the control valve as described in any one of claims 1-13.

15. A vehicle, characterized in that, Includes the control valve according to any one of claims 1-13 or the temperature control system according to claim 14.

Images