Valve structure and vehicle

Abstract

This application relates to a valve structure and a vehicle. The valve structure includes a valve seat assembly, a valve body, a valve core, and a throttling section. During the valve opening process, a first channel is formed between the valve core and the valve seat assembly, and a second channel is formed between the valve core and the throttling section. Since the medium needs to pass through the second channel before flowing out from the first channel, and the flow area of ​​the second channel in this embodiment is smaller than that of the first channel, the flow rate of the medium in the valve structure is controlled by the flow area of ​​the second channel when the valve structure is open. Compared with the related technology where the flow rate of the valve structure is directly controlled by the gap size between the valve core and the valve seat, the valve structure in this application embodiment can control the flow rate of the medium through the valve core and the throttling section when the valve structure is in the open state, so as to avoid sudden changes in the flow rate of the medium through the valve structure, making the flow rate through the valve structure easier to control, thereby ensuring the adjustment accuracy of the valve structure.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a valve structure and a vehicle. Background Technology

[0002] In related technologies, during the opening process of a throttle valve, the medium flows directly out from the gap between the valve core and the valve seat. Because the flow area between the valve core and the valve seat is large after the throttle valve is opened, the flow rate of the medium passing through the throttle valve will change abruptly and is difficult to control when the throttle valve switches from the closed state to the open state, thus affecting the regulation accuracy of the throttle valve. Summary of the Invention

[0003] This application provides a valve structure and vehicle that allows the flow rate of the valve structure to gradually increase during the valve opening process and reduces the impact on the adjustment accuracy of the valve structure, thereby at least partially solving the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of this application, a valve structure is provided, the valve structure comprising:

[0005] Valve seat assembly, having a valve port;

[0006] A valve housing, connected to a valve seat assembly, and having a valve cavity;

[0007] The throttling section is located within the valve cavity and fixed relative to the valve seat assembly; and

[0008] The valve core is movably disposed in the valve cavity. The valve core has a first position and a second position. When the valve core is in the first position and the second position, the valve core separates from the valve seat assembly to open the valve port. A first channel is formed between the valve core and the valve seat assembly, and a second channel is formed between the valve core and the throttling part. The valve cavity, the second channel, the first channel and the valve port are connected in sequence.

[0009] When the valve core is in the first position, the area of ​​the first channel is equal to the flow area of ​​the second channel. During the movement of the valve core from the first position to the second position, the flow area of ​​the second channel is smaller than the flow area of ​​the first channel.

[0010] In some embodiments, the valve core also has a third position, in which the valve core abuts against the valve seat assembly to close the valve port;

[0011] During the movement of the valve core from the third position to the first position, the flow area of ​​the second channel is greater than that of the first channel.

[0012] In some embodiments, when the valve core is in the third position, the minimum distance between the throttling section and the valve core is L2; ​​wherein, L2 satisfies: 0.01mm≤L2≤1mm.

[0013] In some embodiments, during the movement of the valve core from the first position to the second position, the flow area of ​​the second channel gradually increases.

[0014] In some embodiments, the valve core moves along a first direction;

[0015] The throttling section has a first guide surface facing the valve core, and the extension direction of the first guide surface is inclined relative to the first direction.

[0016] In some embodiments, the valve structure further includes:

[0017] The flow guide is located inside the valve cavity and is connected to the end of the throttling section away from the valve core.

[0018] The size of the guide section in the first direction is larger than the size of the throttling section in the first direction.

[0019] In some embodiments, in a second direction perpendicular to the first direction, the distance between the guide portion and the valve core is greater than the distance between the throttling portion and the valve core.

[0020] In some embodiments, the guide surface has a second guide surface facing the valve core and located on the side of the first guide surface away from the first channel, and the extension direction of the second guide surface is inclined relative to the first direction.

[0021] In some embodiments, the slope of the second guide surface is less than the slope of the first guide surface.

[0022] In some embodiments, the first guide surface is connected to the second guide surface.

[0023] In some embodiments, the throttling portion is disposed around the valve core.

[0024] In some embodiments, the valve seat assembly includes:

[0025] The valve seat is connected to the valve body, and the valve port is formed on the valve seat; and

[0026] The sealing element is mounted on the valve seat;

[0027] When the valve core is in the third position, it abuts against the seal.

[0028] In some embodiments, at least a portion of the valve seat is spaced apart from at least a portion of the throttling portion;

[0029] The seal is located between the valve seat and the throttling section.

[0030] In some embodiments, at least one of the valve seat and the throttling portion is provided with at least one latching protrusion;

[0031] The protrusion abuts against the seal.

[0032] According to a second aspect of this application, a vehicle is provided, the vehicle including a valve structure.

[0033] The valve structure in this embodiment includes a valve seat assembly, a valve housing, a throttling section, and a valve core. The valve seat assembly has a valve port, and the valve housing is connected to the valve seat assembly and has a valve cavity. The throttling section is located in the valve cavity and is fixed relative to the valve seat assembly. The valve core is movably disposed in the valve cavity and has a first position and a second position. When the valve core is in the first position and the second position, the valve core separates from the valve seat assembly to open the valve port. A first channel is formed between the valve core and the valve seat assembly, and a second channel is formed between the valve core and the throttling section. The valve cavity, the second channel, the first channel, and the valve port are sequentially connected. When the valve core is in the first position, the area of ​​the first channel is equal to the area of ​​the second channel. During the movement of the valve core from the first position to the second position, the flow area of ​​the second channel is smaller than the flow area of ​​the first channel. In the embodiments of this application, during the valve opening process, a first channel is formed between the valve core and the valve seat assembly, and a second channel is formed between the valve core and the throttling part. Since the medium needs to pass through the second channel before flowing out from the first channel, the flow area of ​​the second channel can control the flow rate of the medium. Therefore, when the valve core moves from the first position to the second position, the area of ​​the second channel is smaller than the area of ​​the first channel. Compared with the related technology, where the flow rate of the valve structure is directly controlled by the gap size between the valve core and the valve seat, the valve structure in the embodiments of this application can control the flow rate of the medium through the valve core and the throttling part when the valve structure is in the open state, so as to avoid sudden changes in the flow rate of the medium through the valve structure, making the flow rate through the valve structure easier to control, thereby ensuring the adjustment accuracy of the valve structure.

[0034] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0035] 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.

[0036] 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.

[0037] Figure 1 This is a cross-sectional view of the valve structure provided in an exemplary embodiment of this application;

[0038] Figure 2 yes Figure 1 Enlarged view of point C in the middle;

[0039] Figure 3 This is a partial cross-sectional view of the valve structure provided in the exemplary embodiment of this application in the open state;

[0040] Figure 4 This is a cross-sectional structural schematic diagram of the valve core provided in an exemplary embodiment of this application;

[0041] Figure 5 This is an assembly diagram of the valve seat and valve body in an exemplary embodiment of this application;

[0042] Figure 6 This is a cross-sectional schematic diagram of the valve housing in this application;

[0043] Figure 7 This is a cross-sectional view of the valve structure provided in an exemplary embodiment of this application;

[0044] Figure 8 This is an assembly diagram of the valve seat and valve body in an exemplary embodiment of this application;

[0045] Figure 9 This is a cross-sectional schematic diagram of the valve seat in an exemplary embodiment of this application;

[0046] Figure 10 This is a cross-sectional schematic diagram of the seal in an exemplary embodiment of this application;

[0047] Figure 11 This is a partial cross-sectional view of the valve structure provided in an exemplary embodiment of this application;

[0048] Figure 12 yes Figure 11 Enlarged view of point A in the middle;

[0049] Figure 13 yes Figure 11 Enlarged diagram of point B in the middle.

[0050] Explanation of reference numerals in the attached figures:

[0051] 1. Valve core; 101. Connecting part; 101A. First outer surface; 102. Pressurizing part; 102A. Pressure bearing surface; 102B. Second outer surface; 102C. End face; 1021. Plane; 1022. Arc surface; 102D. Inner surface; 2. Groove; 3. Cavity; 4. Valve body; 41. Valve seat assembly; 411. Valve seat; 412. Seal; 5. Valve cavity; 6. Valve port; 7. Drive assembly; 71. Output part; 72. First elastic element; 73. Limiting element; 74. Mounting base; 75. Rotation Components; 76. Connecting component; 77. Second elastic component; 8. Mounting cavity; 42. Valve body; 9. Throttling part; 91. First guide surface; 10. First channel; 11. Second channel; 12. Guide part; 121. Second guide surface; 13. Locking protrusion; 14. Top surface; 15. Bottom surface; 16. Outer surface; 17. Inner surface; 18. Mounting groove; 4111. First sub-section; 4112. Second sub-section; 19. Anti-fooling part; 20. Clearance groove; 43. Valve body; 44. Valve cover; 21. Connecting ring; 22. Inlet. Detailed Implementation

[0052] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0053] This application proposes a valve structure. Figures 1 to 13 These are some embodiments of this application.

[0054] Please see Figures 1 to 3 In some embodiments of this application, the valve structure includes a valve seat assembly 41, a valve housing 42, a throttling section 9, and a valve core 1. The valve seat assembly 41 has a valve port 6. The valve housing 42 is connected to the valve seat assembly 41 and has a valve cavity 5 communicating with the valve port 6. The throttling section 9 is located in the valve cavity 5 and fixed relative to the valve seat assembly 41. The valve core 1 is movably disposed in the valve cavity 5. The valve core 1 has a first position and a second position. When the valve core 1 is in the first position and the second position, the valve core 1 is separated from the valve seat assembly 41 to open the valve port. A first channel 10 is formed between the valve core 1 and the valve seat assembly 41, and a second channel 11 is formed between the valve core 1 and the throttling section 9. The valve cavity 5, the second channel 11, the first channel 10, and the valve port 6 are sequentially connected. When the valve core 1 is in the first position, the flow area of ​​the first channel is equal to the flow area of ​​the second channel. During the movement of the valve core 1 from the first position to the second position, the flow area of ​​the second channel 11 is smaller than the flow area of ​​the first channel 10.

[0055] When the valve core is in the first and second positions, the valve structure is in the open state, and the medium can flow into the valve cavity 5 from the inlet 22 of the valve structure and then flow out of the valve structure from the valve port 6 after passing through the second channel 11 and the first channel 10 in sequence.

[0056] In the technical solution of this application, during the valve opening process, a first channel 10 is formed between the valve core 1 and the valve seat assembly 1, and a second channel is formed between the valve core 1 and the throttling part 9. Since the medium needs to pass through the second channel 11 before flowing out from the first channel 10, the flow area of ​​the second channel 11 can control the flow rate of the medium. Therefore, when the valve core 1 moves from the first position to the second position, the flow area of ​​the second channel 11 is smaller than the flow area of ​​the first channel 10. Compared with the related technology, where the flow rate of the valve structure is directly controlled by the gap size between the valve core 1 and the valve seat 411, the valve structure in this embodiment can control the flow rate of the medium through the valve core 1 and the throttling part 9 when the valve structure is in the open state, so as to avoid sudden changes in the flow rate of the medium through the valve structure, making the flow rate through the valve structure easier to control, thereby ensuring the adjustment accuracy of the valve structure.

[0057] In some embodiments of this application, the valve core 1 also has a third position. When the valve core is in the third position, the valve core 1 abuts against the valve seat assembly 41 to close the valve port 6. During the movement of the valve core 1 from the third position to the first position, the flow area of ​​the second channel 11 is greater than the flow area of ​​the first channel 10. That is, in this embodiment, when the valve structure switches from the closed state to the open state, due to the influence of the assembly gap and the internal structure size of the valve, when the opening degree of the valve core 1 is small, the flow area of ​​the second channel 11 will be greater than the flow area of ​​the first channel 10, thus making the second channel 11 unable to play the role of flow regulation. However, since the opening degree of the valve core 1 is small at this time, there will be no sudden change in flow.

[0058] It is understandable that after the valve core 1 moves from the third position to the first position, when the valve core 1 moves from the first position to the second position, it can still control the flow of the valve structure. Moreover, when the valve core 1 moves from the first position to the second position, the flow area of ​​the second channel 11 is greater than the flow area of ​​the second channel 11 when the valve core 1 moves from the third position to the first position.

[0059] In some embodiments of this application, when the valve core 1 is in the third position, the minimum distance between the throttling part 9 and the valve core 1 is L2; ​​wherein, L2 satisfies: 0.01mm≤L2≤1mm; by setting L2 to satisfy this range, the throttling part 9 can play a throttling function, thereby enabling the valve structure to play a flow regulation role.

[0060] Because there is a gap between the valve core 1 and the valve body 42, the valve core 1 may shake during operation. If L2 is less than 0.01mm, the valve core 1 may easily interfere with the throttling part 9 during operation, which may cause valve structure failure or damage to internal parts of the valve structure.

[0061] If L2 is greater than 1mm, then because the distance between the throttling part 9 and the valve core 1 is too far, during the valve structure opening process, the flow area of ​​the second channel 11 cannot be smaller than the flow area of ​​the first channel 10, thus the valve structure does not have the function of regulating flow.

[0062] The values ​​of L2 can be 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.07mm, 0.09mm, 0.11mm, 0.13mm, 0.15mm, 0.17mm, 0.19mm, 0.21mm, 0.23mm, 0.25mm, 0.27mm, 0.29mm, 0.31mm, 0.33mm, 0.35mm, 0.37mm, 0.39mm, 0.41mm, 0.43mm, 0.45mm, 0.47mm, and 0.49mm. The values ​​for L2 are: 0.51mm, 0.53mm, 0.55mm, 0.57mm, 0.59mm, 0.61mm, 0.63mm, 0.65mm, 0.67mm, 0.69mm, 0.71mm, 0.73mm, 0.75mm, 0.77mm, 0.79mm, 0.81mm, 0.83mm, 0.85mm, 0.87mm, 0.89mm, 0.91mm, 0.93mm, 0.95mm, 0.96mm, 0.97mm, 0.98mm, 0.99mm, and 1mm. The values ​​for L2 are not limited to those listed; other unlisted values ​​within this range also apply.

[0063] In some embodiments of this application, during the movement of the valve core 1 from the first position to the second position, the flow area of ​​the second channel 11 gradually increases. That is, in this embodiment, as the valve core 1 moves away from the valve seat assembly 41, the size of the flow area of ​​the first channel 10 between the valve core 1 and the valve seat assembly 41 increases, and the second flow area between the valve core 1 and the throttling part 9 also gradually increases, but is always smaller than the flow area of ​​the first channel 10. This allows the valve core 1 to correspond to different flow areas of the second channel 11 at different opening degrees, thereby making it easier to control the flow rate of the valve structure during the valve opening process and ensuring the adjustment accuracy of the valve structure.

[0064] In some embodiments of this application, the valve core 1 moves along the first direction Y; that is, when the valve core 1 moves away from the valve seat assembly 41 in the first direction Y, the medium flow rate in the valve structure increases; while when the valve core 1 moves closer to the valve seat assembly 41 in the first direction Y, the medium flow rate in the valve structure gradually decreases.

[0065] In some embodiments of this application, the throttling section 9 has a first guide surface 91 facing the valve core 1, and the extension direction of the first guide surface 91 is inclined relative to the first direction Y. With this configuration, the distance between the first guide surface 91 and the valve core 1 gradually increases in the first direction Y along the direction away from the valve seat assembly 41. As a result, when the valve core 1 moves from the first position to the second position, the flow area of ​​the second channel 11 between the valve core 1 and the first guide surface 91 gradually increases. That is, the flow rate of the valve structure during the valve opening process can be easily controlled to ensure the adjustment accuracy of the valve structure.

[0066] It is understandable that, since the first guide surface 91 is a flat surface, the flow area of ​​the second channel 11 changes gradually when the valve core 1 switches between the first and second positions, and there will be no sudden change.

[0067] Please see Figures 3 to 5 In some embodiments of this application, the valve core 1 has a circular cross-section, the throttling portion 9 is arranged around the valve core 1, the first direction Y is the axial direction of the valve core 1, and the second direction X is the radial direction of the valve core 1; the minimum radial dimension of the valve core 1 at the sealing position with the valve seat assembly 41 is L3.

[0068] When the opening degree of valve core 1 is H, the flow area of ​​the first channel 10 is S3 = 2πL3 × H.

[0069] When the valve structure is in the closed state, that is, when the valve core 1 is in the third position, the maximum radial dimension of the valve core 1 in the sealing position with the valve seat assembly 41 is L4, the minimum radial dimension of the throttling section 9 is L5, the minimum distance between the throttling section and the valve core 1 is L6 = L5 - L4; the angle between the first guide surface and the radial line of the valve core 1 is β.

[0070] When the opening degree of valve core 1 is H, the minimum distance between the throttling section 9 and valve core 1 is L7 = L6sinβ + Hcosβ; at this time, the flow area of ​​the second channel 11 is:

[0071] S4=πL7×(2×L4+(L6-L6cos2β+H×L7sin2β) / 2.

[0072] When the opening of valve core 1 is any value, S4 < S3 is always satisfied. At this time, the valve structure is subject to the action of the flow regulating part, thus having the function of flow regulation, making the flow of the valve structure easy to control, so as to ensure the regulation accuracy of the valve structure.

[0073] Please see Figure 3 , Figure 5 and Figure 6 In some embodiments of this application, the valve structure further includes a flow guide 12, which is located inside the valve body 4 and connected to the end of the throttling section 9 away from the valve core 1. The dimension of the flow guide 12 in the first direction Y is greater than the dimension of the throttling section 9 in the first direction Y. In this embodiment, since the flow guide 12 is connected to the end of the throttling section 9 away from the valve core 1, the distance between the flow guide 12 and the valve core 1 in the second direction X is greater than or equal to the distance between the throttling section 9 and the valve core 1 in the second direction X. When the valve core 1 moves along the first direction Y and is opposite to the throttling section 9 in the second direction X, the valve structure has a small flow rate regulation function. When the valve core 1 moves along the first direction Y and is opposite to the flow guide 12 in the second direction X, the flow area between the valve core 1 and the flow guide 12 is large, so the flow area between the valve core 1 and the flow guide 12 can allow a large amount of medium to pass through, thereby meeting the flow rate requirements of the valve structure under high flow rate conditions.

[0074] Furthermore, the flow guide 12 can also regulate the flow rate of the valve structure when the valve core 1 and the flow guide 12 are positioned opposite each other in the second direction X.

[0075] In some embodiments of this application, the distance between the flow guide 12 and the valve core 1 in the second direction X perpendicular to the first direction Y is greater than the distance between the throttling part 9 and the valve core 1; that is, in this embodiment, when the valve core 1 moves along the first direction Y and is opposite to the flow guide 12 in the second direction X, the flow area between the valve core 1 and the flow guide 12 is greater than the maximum value of the flow area of ​​the second channel 11, so that when the valve core 1 moves to be opposite to the flow guide 12 in the second direction X, it can meet the flow requirements of the valve structure under high flow conditions.

[0076] In some embodiments of this application, the flow guide surface has a second flow guide surface 121, which faces the valve core 1 and is located on the side of the first flow guide surface 91 away from the first channel 10. The extension direction of the second flow guide surface 121 is inclined relative to the first direction Y. This arrangement allows the distance between the second flow guide surface 121 and the valve core 1 to gradually increase when the valve core 1 moves in the first direction Y in a direction away from the valve seat assembly 41. This, in turn, gradually increases the flow area between the second flow guide surface 121 and the valve core 1, thereby enabling the valve structure to meet the high flow rate requirements under different operating conditions.

[0077] It is understandable that, since the second guide surface 121 is a flat surface, when the valve core 1 moves in the first direction Y in a direction away from the valve seat assembly 41, the flow area between the valve core 1 and the second guide surface 121 changes gradually and does not produce abrupt changes.

[0078] In some embodiments of this application, when the valve core 1 moves in the first direction Y away from the valve seat assembly 41 and is opposite to the flow guide 12 in the second direction X, the flow area between the second flow guide surface 121 and the valve core 1 is greater than or equal to the flow area of ​​the first channel 10, thereby satisfying the flow requirements of the valve structure under high flow conditions.

[0079] In some embodiments of this application, the slope of the second guide surface 121 is less than the slope of the first guide surface 91. With this configuration, based on the valve core 1 moving the same distance in the first direction Y, the change in the flow area of ​​the second channel 11 is less than the change in the flow area between the second guide surface 121 and the valve core 1, thereby enabling the configuration of the guide portion 12 to meet the flow requirements of the valve structure under high flow conditions.

[0080] In some embodiments of this application, the throttling part 9, the guide part 12 and the valve housing 42 are integrally formed to facilitate the assembly of the valve structure.

[0081] In some embodiments of this application, the throttling section 9 is arranged around the valve core 1; this arrangement ensures that the medium flows through the second flow channel when flowing from the valve cavity 5 to the valve port 6, thereby ensuring that the flow regulation of the valve structure is easily controlled, and ensuring the sealing performance between the valve core 1 and the valve seat assembly 41.

[0082] Please see Figure 9 In some embodiments of this application, the valve seat assembly 41 includes a valve seat 411 and a seal 412. The valve seat 411 is connected to the valve body 4, and the valve port 6 is formed on the valve seat 411. The seal 412 is disposed on the valve seat 411. When the valve core 1 is in the third position, the valve core 1 abuts against the seal 412. That is, in this embodiment, the sealing performance of the valve structure is ensured by providing the valve core 1 and the seal 412 to abut against each other.

[0083] In some embodiments of this application, when the valve core 1 is in the third position, the valve core 1 and the seal 412 abut against each other in the first direction Y.

[0084] In some embodiments of this application, at least a portion of the valve seat 411 is spaced apart from at least a portion of the throttling portion 9; wherein, the seal 412 is located between the valve seat 411 and the throttling portion 9; that is, in this embodiment, during valve structure assembly, the seal 412 is fixed within the valve structure by the cooperation between the throttling portion 9 and the valve seat 411.

[0085] In some embodiments of this application, the throttling part 9 and the valve seat 411 are respectively located on both sides of the seal 412 in the first direction Y; the throttling part 9 is located on one side of the valve core 1 in the second direction X, thereby avoiding interference between the throttling part 9 and the valve core 1 and the seal 412.

[0086] In some embodiments of this application, the outer surface 16 of the seal 412 is also limited by the valve seat 411.

[0087] In some embodiments of this application, the flow guide 12 is connected to the throttling part 9 and is also located on one side of the seal 412 in the first direction Y, so as to cooperate with the throttling part 9 to limit the seal 412.

[0088] In some embodiments of this application, at least one of the valve seat 411 and the throttling portion 9 is provided with at least one locking protrusion 13; wherein the locking protrusion 13 abuts against the seal 412; that is, in this embodiment, by providing the locking protrusion 13, at least a portion of the locking protrusion 13 is embedded in the seal 412 to prevent the seal 412 from coming out of the throttling portion 9 and the valve seat 411.

[0089] In some embodiments of this application, at least one latching protrusion 13 is also provided on the guide portion 12.

[0090] Please see Figures 7 to 8 In some embodiments of this application, the valve structure includes a valve body 4, a valve core 1, and a sealing element 412. The valve body 4 has a valve port 6. The valve core 1 is movably disposed within the valve body 4. The sealing element 412 is disposed on the valve body 4 and surrounds the valve port 6. The sealing element 412 has a top surface 14 facing the valve core 1, a bottom surface 15 away from the valve core 1, and an outer side surface 16 and an inner side surface 17 connecting the top surface 14 and the bottom surface 15. The top surface 14 is used to abut against the valve core 1 to close the valve port 6, and the bottom surface 15, the outer side surface 16, and the inner side surface 17 all abut against the valve body 4.

[0091] When the valve structure is in the closed state, the valve core 1 abuts against the top surface 14 of the seal 412. In addition to the top surface 14 of the seal 412 that contacts the valve core 1, the bottom surface 15, outer surface 16 and inner surface 17 of the seal 412 are all abutted by the valve body 4. That is, when the valve core 1 abuts against the top surface 14 of the seal 412, the seal 412 is not prone to creep due to the space restriction inside the valve body 4, thereby improving the service life and stability of the valve structure.

[0092] It should be further explained that, since the seal 412 is arranged around the valve port 6, when the valve core 1 and the seal 412 come into contact, the sealing performance of the valve core 1 and the seal 412 on the valve structure can be ensured.

[0093] In some embodiments of this application, the valve body 4 includes a valve seat 411, a valve port 6 is formed on the valve seat 411, and at least a portion of the valve seat 411 is opposite to the valve core 1 in the direction of movement of the valve core 1 and is provided with a mounting groove 18; wherein, the sealing element 412 is located in the mounting groove 18, and the groove wall of the mounting groove 18 abuts against the bottom surface 15, the outer side surface 16 and the inner side surface 17; that is, in this embodiment, the sealing element 412 is disposed in the mounting groove 18 on the valve seat 411, and the groove wall of the mounting groove 18 abuts against the bottom surface 15, the outer side surface 16 and the inner side surface 17 of the sealing element 412, so that when the valve core 1 abuts against the top surface 14 of the sealing element 412, the sealing element 412 is not prone to creep due to the space limitation of the mounting groove 18, thereby improving the service life and stability of the valve structure.

[0094] In some embodiments of this application, the valve body 4 includes a valve seat 411 and a valve shell 42, with a valve port 6 formed on the valve seat 411; the valve shell 42 is connected to the valve seat 411, and the valve shell 42 has a valve cavity 5, which communicates with the valve port 6. The valve core 1 is movably disposed in the valve cavity 5, and at least a portion of the valve shell 42 is opposite to the valve core 1 in the direction of movement of the valve core 1 and is provided with a mounting groove 18; wherein, the sealing element 412 is located in the mounting groove 18, and the groove wall of the mounting groove 18 abuts against the bottom surface 15, the outer side surface 16, and the inner side surface 17; that is, in this embodiment, the sealing element 412 is disposed in the mounting groove 18 on the valve shell 42, and the groove wall of the mounting groove 18 abuts against the bottom surface 15, the outer side surface 16, and the inner side surface 17 of the sealing element 412, so that when the valve core 1 abuts against the top surface 14 of the sealing element 412, the sealing element 412 is not prone to creep due to the space limitation of the mounting groove 18, thereby improving the service life and stability of the valve structure.

[0095] In some embodiments of this application, the valve body 4 includes a valve seat 411 and a valve housing 42, with a valve port 6 formed on the valve seat 411; the valve housing 42 is connected to the valve seat 411, and the valve housing 42 has a valve cavity 5, which communicates with the valve port 6, and the valve core 1 is movably disposed within the valve cavity 5; wherein at least a portion of the valve seat 411 and at least a portion of the valve housing 42 enclose a mounting groove 18, the opening of the mounting groove 18 being opposite to the valve core 1 in the direction of movement of the valve core 1; the sealing element 412 is located within the mounting groove 18, and the groove wall of the mounting groove 18 is flush with the bottom surface 15 and the outer surface 1. 6 and inner side 17 abut; that is, in this embodiment, the valve seat 411 can form an installation groove 18 when it is assembled with the valve body 42. The seal 412 is disposed in the installation groove 18 formed when the valve seat 411 and the valve body 42 are assembled. The groove wall of the installation groove 18 abuts with the bottom surface 15, outer side 16 and inner side 17 of the seal 412. Therefore, when the valve core 1 abuts with the top surface 14 of the seal 412, the seal 412 is not prone to creep due to the space limitation of the installation groove 18, thereby improving the service life and stability of the valve structure.

[0096] There are no restrictions on the form in which the valve seat 411 and the valve body 42 are combined to form the mounting groove 18.

[0097] Please see Figures 8 to 9 In some embodiments of this application, the valve seat 411 includes a first sub-segment 4111 and a second sub-segment 4112. At least a portion of the first sub-segment 4111 is located within the valve cavity 5 and connected to the valve housing 42. The second sub-segment 4112 is connected to the portion of the first sub-segment 4111 located within the valve cavity 5 and is also located within the valve cavity 5. At least a portion of the second sub-segment 4112 is spaced apart from the cavity wall of the valve cavity 5, and the first sub-segment 4111, the second sub-segment 4112, and the cavity wall of the valve cavity 5 enclose and form a mounting groove 18; that is... In this embodiment, the second segment 4112 of the valve seat 411 abuts against the inner side 17 of the seal 412, the first segment 4111 of the valve seat 411 abuts against the bottom surface 15 of the seal 412, and the outer side 16 of the valve seat 411 abuts against the valve body 42. Through the mutual cooperation of the valve seat 411 and the valve body 42, when the valve core 1 abuts against the top surface 14 of the seal 412, the seal 412 is less prone to creep due to the space limitation of the mounting groove 18, thereby improving the service life and stability of the valve structure.

[0098] In some embodiments of this application, the valve structure further includes a throttling section 9, which is connected to the valve housing 42 and abuts against the top surface 14 of the seal 412; wherein, the throttling section 9 can further reduce the exposed area of ​​the seal 412, thereby making the seal 412 less prone to creep, thereby improving the service life and stability of the valve structure.

[0099] In some embodiments of this application, the valve structure further includes a flow guide 12 connecting the throttling section 9 and the valve housing 42, and the flow guide 12 also abuts against the top surface 14 of the seal 412; wherein, the provision of the flow guide 12 can further reduce the exposed area of ​​the seal 412, thereby making the seal 412 less prone to creep, thereby improving the service life and stability of the valve structure.

[0100] In some embodiments of this application, the throttling part 9 and the flow guiding part 12 are both located on one side of the valve core 1 in the second direction X, thereby avoiding interference between the throttling part 9 and the flow guiding part 12 and the contact between the valve core 1 and the seal 412.

[0101] Please see Figures 8 to 10 In some embodiments of this application, one of the valve body 4 and the seal 412 is provided with a foolproof part 19, and the other is provided with a relief groove 20 that matches the shape of the foolproof part 19. By providing the foolproof part 19 and the relief groove 20 on the valve body 4 and the seal 412 respectively, the seal 412 can be easily assembled to the set position, avoiding the problem of the seal 412 being installed incorrectly in the valve structure.

[0102] In some embodiments of this application, the foolproof part 19 is provided on the valve housing 42, and the clearance groove 20 is formed on the seal 412.

[0103] Please see Figures 11 to 13 In some embodiments of this application, the valve core 1 is disposed within the valve structure. The valve core 1 includes a connecting portion 101 and a pressurizing portion 102 connected to each other and is configured to open or close the valve structure. At least a portion of the outer contour of the pressurizing portion 102 protrudes from the outer contour of the connecting portion 101.

[0104] It should be further explained that when the valve structure is in the open state, the medium flows from the valve cavity 5 to the valve port 6 and then flows out of the valve structure from the valve port 6. However, when the valve structure is in the closed state, the medium cannot flow from the valve cavity 5 to the valve port 6 due to the obstruction of the valve core 1. At this time, the valve cavity 5 is a high-pressure environment and the valve port 6 is a low-pressure environment. That is, the valve cavity 5 will exert a certain pressure on the valve body 4.

[0105] Since at least a portion of the outer contour of the pressure-applying part 102 of the valve core 1 protrudes beyond the outer contour of the connecting part 101, when the valve structure is in the closed state, the high pressure inside the valve structure will apply a certain pressure to the surface of the outer contour of the pressure-applying part 102 that protrudes beyond the outer contour of the connecting part 101, thereby ensuring the sealing effect of the valve core 1 when the valve structure is in the closed state and avoiding the problem of poor sealing of the valve structure caused by the movement of the valve core 1.

[0106] When the high pressure inside the valve structure applies a certain pressure to the surface of the outer contour of the pressurizing part 102 that protrudes from the outer contour of the connecting part 101, it makes it more difficult to separate the valve core 1 from the part that abuts the valve core 1, thereby ensuring the sealing performance of the valve structure in the closed state.

[0107] In some embodiments of this application, the connecting portion 101 is connected to the pressurizing portion 102 in the first direction Y; and at least a portion of the outer contour of the pressurizing portion 102 protrudes from the outer contour of the connecting portion 101 in the second direction X perpendicular to the first direction Y; that is, in this embodiment, the valve core 1 is movably disposed in the valve structure along the first direction Y, and at least a portion of the outer contour of the pressurizing portion 102 protrudes from the outer contour of the connecting portion 101 in the second direction X, so that the high pressure in the valve body 4 can apply a certain pressure to the valve body 4 in the first direction Y, thereby ensuring that the valve body 4 will not move when the valve structure is in the closed state.

[0108] In some embodiments of this application, the maximum distance between the outer contour of the connecting portion 101 and the outer contour of the pressurizing portion 102 in the second direction X perpendicular to the first direction Y is L1; wherein, L1 satisfies: 0.1mm≤L1≤0.5mm; in this embodiment, L1 is designed to satisfy this range, thereby ensuring that the valve core 1 can provide sufficient sealing effect in the valve structure when subjected to high pressure, and also avoiding the problem that the outer contour of the connecting portion 101 protrudes too much from the outer contour of the pressurizing portion 102 in the second direction X, resulting in excessive pressure applied to the valve body 4, which in turn affects the sensitivity of the valve structure during normal operation.

[0109] If L1 is less than 0.1mm, there may be a problem that the high-pressure environment inside the valve structure applies too little pressure to the valve core 1, which cannot provide a good sealing effect for the valve structure.

[0110] If L1 is greater than 0.5mm, there may be excessive pressure applied to the valve core 1 by the high-pressure area within the valve structure, which may affect the normal driving sensitivity of the valve structure.

[0111] In some embodiments of this application, at least a portion of the connecting portion 101 and the pressurizing portion 102 are cylindrical; therefore, the first direction Y is the axial direction of the valve core 1, and the second direction X is the radial direction of the valve core 1; in this embodiment, the value of L1 is also the difference between the radius of the outer contour of the pressurizing portion 102 and the radius of the outer contour of the connecting portion 101.

[0112] In some embodiments of this application, the dimension of the pressurizing part 102 in the radial plane 1021 of the valve core 1 is S1, and the dimension of the connecting part 101 in the radial plane 1021 of the valve core 1 is S2; when the pressure of the high-pressure environment inside the valve structure is P1, the pressure F2 provided by the pressurizing part 102 to the valve core 1 is P1 × (S1 - S2); in addition, when the valve structure is switched, the driving force on the valve core 1 is F1, the elastic force provided by the spring when it abuts against the valve core 1 is F3, and the maximum resistance in the first direction Y that the valve core 1 experiences when it switches from the closed state to the open state is F4; wherein, when F1 > F2 + F3 + F4 is satisfied, it is possible to ensure that the valve core 1 is sealed securely when the valve structure is in the closed state while avoiding affecting the normal driving sensitivity of the valve structure.

[0113] The value of L1 can be 0.1mm, 0.12mm, 0.14mm, 0.16mm, 0.18mm, 0.2mm, 0.22mm, 0.24mm, 0.26mm, 0.28mm, 0.3mm, 0.32mm, 0.34mm, 0.36mm, 0.38mm, 0.4mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, or 0.5mm. The value of L1 is not limited to the listed values; other unlisted values ​​within this range also apply.

[0114] In some embodiments of this application, the connecting part 101 has a first outer surface 101A, which is at least a part of the outer contour of the connecting part 101; the pressurizing part 102 has a pressure-bearing surface 102A, which is at least a part of the outer contour of the pressurizing part 102; the pressure-bearing surface 102A completely protrudes from the first outer surface 101A; wherein, according to the pressure and pressure calculation formula: F=PS, when the pressure-bearing surface 102A completely protrudes from the first outer surface 101A, the pressure value applied to the valve core 1 for sealing in the high-pressure environment is the maximum, thereby ensuring the sealing effect of the valve core 1 when the valve structure is in a sealed state.

[0115] It should be further explained that the first outer surface 101A is at least a part of the outer contour of the connecting part 101. That is, the outer contour of the connecting part 101 can be formed by the first outer surface 101A, or it can be formed by the first outer surface 101A together with other surfaces; there is no limitation here.

[0116] Similarly, the pressure-bearing surface 102A is at least a part of the outer contour of the pressure-bearing part 102. That is, the outer contour of the pressure-bearing surface 102A can be composed of the pressure-bearing surface 102A or can be composed of the pressure-bearing surface 102A and other surfaces; there is no limitation here.

[0117] In some embodiments of this application, at least a portion of the pressure-bearing surface 102A is inclined relative to the first outer surface 101A. This arrangement reduces the resistance encountered by the medium flowing in the valve structure, thereby ensuring smooth flow of the medium within the valve structure.

[0118] If the structure of the pressure-bearing surface 102A is stepped or uneven, turbulence or flow resistance is easily generated when the medium flows from inside the valve structure.

[0119] Furthermore, since at least a portion of the pressure-bearing surface 102A is inclined relative to the first outer surface 101A, the surface of the pressure-bearing surface 102A is flat and easy to process.

[0120] In some embodiments of this application, the angle of inclination of the pressure-bearing surface 102A relative to the first outer surface 101A is α, where α is an obtuse angle; that is, in this embodiment, α satisfies 90°<α<180°. Designing α to satisfy this range can ensure that the high-pressure environment provides sufficient sealing pressure to the valve core 1 in the valve closing direction while reducing the flow resistance effect of the medium flowing in the valve structure, thereby ensuring the working stability of the valve structure.

[0121] If α is less than 90°, a recessed area is formed between the pressure-bearing surface 102A and the first outer surface 101A. This recessed area will affect the smooth flow of the medium in the valve structure and is prone to turbulence or flow resistance. On the other hand, this recessed area is prone to accumulating impurities during the operation of the valve structure, which will affect the normal operation of the valve structure.

[0122] If α is greater than 180°, the high-pressure environment will apply a certain pressure to valve core 1 in the valve opening direction, thus failing to ensure the sealing effect of valve core 1.

[0123] In some embodiments of this application, the valve core 1 moves in the first direction Y and abuts or separates from the seal 412 to close or open the valve structure; if α is greater than 180°, the high-pressure environment will apply a certain pressure to the valve core 1 in the direction of the first direction Y and the direction of separation from the seal 412, thereby failing to ensure the sealing effect of the valve core 1.

[0124] The values ​​of α can be 90.1°, 90.2°, 90.3°, 90.4°, 90.5°, 92°, 94°, 96°, 98°, 100°, 102°, 104°, 106°, 108°, 110°, 102°, 104°, 106°, 108°, 120°, 122°, 124°, 126°, 128°, 130°, 132°, 133°, 134°, etc. 135°, 136°, 138°, 140°, 142°, 144°, 146°, 148°, 150°, 152°, 154°, 156°, 158°, 160°, 162°, 164°, 166°, 168°, 170°, 172°, 174°, 176°, 178°, 179.5°, 179.6°, 179.7°, 179.8°, 179.9°. The value of α is not limited to the listed values; other unlisted values ​​within this range also apply.

[0125] In some embodiments of this application, one end of the pressure-bearing surface 102A is connected to one end of the first outer surface 101A; this arrangement ensures that the pressure applied to the valve core 1 by the high-pressure environment in the valve closing direction is all located on the pressure-bearing surface 102A, thereby ensuring the sealing effect of the valve core 1.

[0126] In addition, the pressure-bearing surface 102A is also an inclined surface, which can reduce the turbulence or flow resistance of the medium flowing in the valve structure.

[0127] In some embodiments of this application, at least a portion of the end where the pressure-bearing surface 102A connects to the first outer surface 101A is an arc surface; by setting the end where the pressure-bearing surface 102A connects to the first outer surface 101A to be an arc surface, stress concentration on the valve core 1 can be reduced and the strength of the valve core 1 can be improved; at the same time, the arc surface design can also simplify the processing technology, thereby reducing the production cost of the valve core 1.

[0128] In some embodiments of this application, the connecting portion 101 has a groove 2; wherein the groove 2 extends from the first outer side surface 101A into the interior of the connecting portion 101; by providing the groove 2, the groove 2 has a groove wall facing the pressurizing portion 102, and the high pressure environment applies a certain pressure to the groove wall facing the pressurizing portion 102, thereby providing pressure to the valve core 1 in the valve closing direction, thereby improving the sealing effect of the valve core 1.

[0129] It should be noted that the valve closing direction is the direction in which the valve core 1 moves closer to the seal 412 in the first direction Y, and the valve opening direction is the direction in which the valve core 1 moves away from the seal 412 in the first direction Y.

[0130] In some embodiments of this application, the groove wall of the groove 2 is also connected to the pressure bearing surface 102A; wherein, since the materials and roughness of the connecting part 101 and the pressurizing part 102 of the valve core 1 are different, a groove 2 is provided on the side of the connecting part 101 near the pressurizing part 102 to facilitate the production and processing of the valve core 1.

[0131] In some embodiments of this application, the pressurizing part 102 has a second outer surface 102B, which is connected to the end of the pressure-bearing surface 102A away from the first outer surface 101A. By further providing the second outer surface 102B on the pressurizing part 102, it is convenient to process the valve core 1. At the same time, since the inlet 22 of the valve structure is located on one side of the valve core 1 in the second direction X and communicates with the valve cavity 5, the second outer surface 102B can also provide a certain buffering effect when the fluid enters the valve structure from the inlet 22 of the valve structure.

[0132] Furthermore, if the valve core 1 does not have a second outer surface 102B, the pressure-bearing surface 102A is located close to the seal 412 in the first direction Y. When the valve structure switches from the closed state to the open state, the pressure-bearing surface 102A is close to the valve port 6 and is used for the medium to pass through. Since the pressure-bearing surface 102A is a slope, when the medium flows from the pressure-bearing surface 102A and the gap between the valve core 1 and the seal 412 to the valve port 6, turbulence and flow resistance are easily generated, thereby affecting the working stability of the valve structure.

[0133] In some embodiments of this application, the pressurizing part 102 further has an end face 102C; wherein the end face 102C is located at the end of the pressurizing part 102 away from the connecting part 101 and is connected to the second outer surface 102B; wherein the end face 102C is used to abut against the sealing member 412, thereby causing the valve structure to be in a closed state. The end face 102C has a certain area, thereby increasing the contact area between the valve core 1 and the sealing member 412, thereby improving the sealing performance of the valve core 1.

[0134] In some embodiments of this application, end face 102C includes a plane 1021 and an arc surface 1022 connected to each other; plane 1021 is connected to second outer surface 102B through arc surface 1022; wherein, plane 1021 of end face 102C is used to abut against seal 412 to close valve structure, and plane 1021 is connected to second outer surface 102B through arc surface 1022 to facilitate deburring and other processing operations at the connection between end face 102C and second outer surface 102B.

[0135] In some embodiments of this application, the connecting part 101 and the pressurizing part 102 are connected in the first direction Y; in the second direction X perpendicular to the first direction Y, the maximum distance between the outer contour of the connecting part 101 and the outer contour of the pressurizing part 102 is L1; the radius of the circle containing the arc surface 1022 is R1; wherein, L1 and R1 satisfy: 0.03mm≤R1≤L1; in this embodiment, by setting R1 to satisfy this range, it is convenient to perform rounding between the end face 102C and the second outer surface 102B, while avoiding excessively large R1 size, which would cause excessive pressure to be applied to the valve core 1 in the valve opening direction by the high pressure environment, thus affecting the sealing performance of the valve core 1.

[0136] It is understandable that, since the arc surface 1022 is arc-shaped, at least a portion of the arc surface 1022 will be spaced from the seal 412, and the high pressure environment will apply pressure in the valve opening direction to the portion of the arc surface 1022 that is spaced from the seal 412.

[0137] If R1 is less than 0.03mm, it is not easy to perform fillet machining between end face 102C and second outer surface 102B.

[0138] If R1 is greater than L1, there is a problem that the pressure applied to the valve core 1 by the high-pressure environment in the valve opening direction is too large due to the excessive size of R1, which in turn affects the sealing performance of the valve core 1.

[0139] The pressure applied to the valve core 1 in the valve closing direction by the high-pressure environment provided by the arc surface 1022 is all located on the pressure bearing surface 102A, thereby ensuring the sealing effect of the valve core 1.

[0140] In some embodiments of this application, the pressurizing part 102 has a cavity 3; wherein the thickness of the end of the pressurizing part 102 near the connecting part 101 is greater than the thickness of the end of the pressurizing part 102 away from the connecting part 101; this arrangement reduces the weight of the valve core 1, thereby saving the manufacturing cost of the valve core 1.

[0141] Meanwhile, since the end of the pressurizing part 102 near the connecting part 101 mainly serves to connect the connecting part 101, and the end of the pressurizing part 102 away from the connecting part 101 mainly serves to seal, this arrangement can increase the contact area between the pressurizing part 102 and the connecting part 101, which provides strength to the valve core 1 and reduces the weight of the valve core 1.

[0142] In some embodiments of this application, the thickness of the pressure portion 102 gradually decreases in the direction away from the connection portion 101; this arrangement makes the thickness dimension of the valve core 1 in the pressure portion 102 in the second direction X transition smoothly in the first direction Y, which facilitates the operation of the tooling to process the valve core 1.

[0143] Similarly, this configuration can also reduce the weight of valve core 1, thereby saving the manufacturing cost of valve core 1.

[0144] In some embodiments of this application, the pressurizing part 102 has an inner surface 102D forming a cavity 3; wherein the extending direction of the inner surface 102D is inclined relative to the first direction Y; this is configured such that the cavity 3 of the pressurizing part 102 is for the insertion of an assembly tool, thereby enabling the valve core 1 to be assembled in the valve structure. By providing an inclined inner surface 102D, collision interference between the assembly tool and the valve core 1 when inserted into the cavity 3 is avoided, thereby preventing damage to the product.

[0145] In some embodiments of this application, the interior of the connecting part 101 is also hollow and communicates with the cavity 3, so as to further reduce the weight of the valve core 1 and thus save the manufacturing cost of the valve core 1.

[0146] This application also proposes a valve structure, which includes a valve body 4 and a valve core 1. The valve body 4 has a valve cavity 5 and a valve port 6 communicating with the valve cavity 5. The valve core 1 is movably disposed in the valve cavity 5 to open or close the valve port 6. As described above, since this valve structure adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0147] When valve port 6 is closed by valve core 1, valve chamber 5 is in a high-pressure environment and valve port 6 is in a low-pressure environment.

[0148] In some embodiments of this application, the valve body 4 includes a valve seat assembly 41, a valve port 6 is formed on the valve seat assembly 41, and a valve core 1 is disposed on one side of the valve seat assembly 41 in the first direction Y; wherein, the valve core 1 is movable in the first direction Y and can separate from or abut against the valve seat assembly 41 to open or close the valve port 6; that is, in this embodiment, through the cooperation between the valve core 1 and the valve seat assembly 41, the valve cavity 5 is connected to the valve port 6 or the valve cavity 5 is spaced apart from the valve port 6, thereby realizing the opening and closing of the valve structure.

[0149] The valve core 1 can abut against the valve seat assembly 41 in the first direction Y. That is, the contact position between the valve core 1 and the valve seat assembly 41 will also be affected by the abutment force of the valve core 1, thereby ensuring the reliability of the seal between the valve core 1 and the valve seat assembly 41.

[0150] In some embodiments of this application, the valve seat assembly 41 includes a valve seat 411 and a seal 412, with a valve port 6 formed on the valve seat 411; the seal 412 is disposed on the valve seat 411; wherein, the valve core 1 is disposed on one side of the valve seat 411 or the seal 412 in the first direction Y; that is, in this embodiment, the valve core 1 opens or closes the valve port 6 by separating or abutting against the valve seat 411 or the seal 412 in the first direction Y, thereby realizing the opening and closing of the valve structure.

[0151] In some embodiments of this application, the valve core 1 is disposed on one side of the valve seat 411 in the first direction Y and can abut against the valve seat 411, and the sealing member 412 is disposed on the valve seat 411 and located inside the valve core 1, thereby improving the sealing performance between the valve core 1 and the valve seat assembly 41.

[0152] In some embodiments of this application, at least one of the valve core 1 and the seal 412 is an elastic element; by providing that at least one of the valve core 1 and the seal 412 is an elastic element, when the valve core 1 and the seal 412 come into contact, at least one of the valve core 1 and the seal 412 can undergo elastic deformation, thereby increasing the contact area between the valve core 1 and the seal 412, and thus improving the sealing performance between the valve core 1 and the valve seat assembly 41.

[0153] In some embodiments of this application, the valve structure further includes a drive assembly 7, which is configured to drive the valve core 1 to move in a first direction Y so that the valve core 1 is separated from or abuts against the valve seat assembly 41; that is, in this embodiment, the valve core 1 is driven to move within the valve body 4 by providing a drive assembly 7 within the valve structure.

[0154] The form in which the drive component 7 drives the valve core 1 is not limited; it can be mechanically driven, electromagnetically driven, etc.

[0155] In some embodiments of this application, the valve core 1 has a third position and a fourth position. When the valve core 1 is in the third position, the valve core 1 abuts against the valve seat assembly 41. When the valve core 1 is in the fourth position, the valve body 4 is separated from the valve seat assembly 41. The drive assembly 7 includes an output part 71, which is movably disposed in the valve body 4 along the first direction Y and linked with the valve core 1 to drive the valve core 1 to switch between the third position and the fourth position. That is, in this embodiment, the valve core 1 can move in the first direction Y by providing the movement of the output part 71 in the first direction Y, that is, the valve core 1 can move in the first direction Y along with the output part 71.

[0156] In some embodiments of this application, the valve core 1 is connected to the output section 71 and is movable relative to the output section 71 in a first direction Y; the drive assembly 7 includes a first elastic member 72 disposed between the output section 71 and the valve core 1, the first elastic member 72 having a first compression state and a second compression state, the compression amount of the first elastic member 72 in the first compression state being less than the compression amount of the first elastic member 72 in the second compression state; wherein, when the first elastic member 72 is in the first compression state, the output section 71 and the valve core 1 are relatively fixed, and the output section 71 can drive the valve core 1 to move between a third position and a fourth position; when the valve core 1 is in the first position and the output section 71 moves relative to the valve core 1, the first elastic member 72 is in the second compression state.

[0157] It is understandable that the fourth position can be any position of the valve core 1 within the valve structure when the valve structure is in the open state, and is not limited to the first and second positions mentioned above.

[0158] In the above embodiment, the valve core 1 and the output part 71 are elastically connected by a first elastic member 72. When the external force on the first elastic member 72 is less than the minimum compressive force of the first elastic member 72 or when the first elastic member 72 is not subjected to external force, the first elastic member 72 will not be compressed. At this time, the valve core 1 and the output part 71 maintain a relatively fixed relationship. Therefore, the movement of the output part 71 in the first direction Y can synchronously drive the valve core 1 to move in the first direction Y, thereby realizing the opening and closing of the valve structure. When the valve core 1 is in the third position, if the output part 71 continues to move in the valve closing direction, the first elastic member 72 will be compressed, that is, it will switch from the first compression state to the second compression state. At this time, the position of the valve core 1 is fixed, but the valve core 1 will not interfere with the movement of the output part 71, thereby maintaining a safety margin between the valve core 1 and the output part 71, and avoiding damage to the valve structure caused by the continuous movement of the output part 71 when the valve core 1 is in the third position.

[0159] Meanwhile, in the above embodiments, if the pressure applied to the valve core 1 by the high-pressure environment is too large, causing the valve core 1 to move relative to the output part 71, the output part 71 will not be affected by the movement of the valve core 1 under the action of the first elastic member 72, thus maintaining its original position; in this way, the accuracy of valve structure adjustment is ensured.

[0160] In some embodiments of this application, the output portion 71 has a mounting cavity 8 on the side near the valve core 1, and at least a portion of the valve core 1 is located within the mounting cavity 8. The drive assembly 7 further includes a limiting member 73, which is located within the mounting cavity 8 and is movable along a first direction Y. The limiting member 73 is fixed to the valve core 1 to restrict the valve core 1 from separating from the output portion 71. A first elastic member 72 is disposed between the limiting member 73 and the cavity wall of the mounting cavity 8. In this embodiment, the valve core 1 and the limiting member 73 are riveted together to ensure a secure fixation between them. By extending a portion of the valve core 1 into the mounting cavity 8 of the output portion 71, the internal parts of the valve structure are assembled compactly, thereby effectively improving the space utilization rate within the valve structure.

[0161] It is understandable that, since the limiting member 73 can move within the mounting cavity 8, the valve core 1 connected to the limiting member 73 can move relative to the output part 71.

[0162] In some embodiments of this application, the drive assembly 7 further includes a mounting base 74 and a rotating member 75. The mounting base 74 is fixedly disposed inside the valve body 4, and the output part 71 is screwed to the mounting base 74. The rotating member 75 is rotatably disposed inside the valve body 4 and is linked with the output part 71. The output part 71 rotates with the rotating member 75 and is movable in the first direction Y. That is, in this embodiment, by driving the output part 71 to rotate, the threaded guide between the output part 71 and the mounting part allows the output part 71 to move in the first direction Y while rotating.

[0163] In one embodiment of this application, the rotating member 75 is fixed relative to the output part 71, and the rotating member 75 can move along the first direction Y while rotating.

[0164] In another embodiment of this application, the output section 71 can rotate with the rotating member 75 and can move relative to the rotating member 75 in the first direction Y.

[0165] In some embodiments of this application, the limiting member 73 includes a bearing, the inner ring of which is fixed to the valve core 1, and the outer ring of which is connected to the first elastic member 72. In this embodiment, by providing a bearing to connect the valve core 1, the performance of the valve core 1 is utilized so that the valve core 1 does not rotate with the output part 71 when it moves along the first direction Y, thereby reducing the friction between the valve core 1 and the valve body 4 and improving the service life of the valve structure.

[0166] In some embodiments of this application, the drive assembly 7 further includes a connector 76, which is fixedly connected to the limiting member 73. The connector 76 abuts against the first elastic member 72, with at least a portion of the connector 76 located inside the first elastic member 72. By providing a connection between the first elastic member 72 and the connector 76, and with at least a portion of the connector 76 located inside the first elastic member 72, the connector 76 limits the position of the first elastic member 72, preventing displacement of the first elastic member 72 within the mounting cavity 8.

[0167] In some embodiments of this application, the first elastic member 72 extends along the first direction Y and is disposed within the mounting cavity 8.

[0168] In some embodiments of this application, the drive assembly 7 further includes a second elastic member 77 disposed within the valve body 4 and abutting against the valve core 1, configured to drive the valve core 1 to move from the fourth position to the third position. In this embodiment, through the action of the second elastic member 77, when the output part 71 moves in the valve closing direction, the second elastic member 77 can simultaneously abut against the valve core 1 to move in the valve closing direction, thereby reducing the drive power consumption of the valve structure. At the same time, when the valve core 1 is in the third position, the second elastic member 77 will apply a certain pressure to the valve core 1, thereby preventing the valve core 1 from separating from the seal 412.

[0169] Furthermore, the provision of the second elastic member 77 enables the first elastic member 72 to abut against the valve core 1 when the external force applied to it exceeds its minimum compression and it has a tendency to deform, thereby preventing relative movement between the valve core 1 and the output part 71.

[0170] In some embodiments of this application, the second elastic member 77 is in a compressed state when the valve core 1 is in the third and fourth positions.

[0171] In some embodiments of this application, the types of the first elastic element 72 and the second elastic element 77 are not limited; they can be elastic pads or springs, etc.

[0172] In some embodiments of this application, both the first elastic element 72 and the second elastic element 77 are springs.

[0173] In some embodiments of this application, the rotating component 75 is a rotor assembly, which is disposed inside the valve cover 44. A stator (not shown in the figure) is disposed outside the valve cover 44. The stator can generate a rotating magnetic field. The main body of the rotor assembly is made of magnetic material. Under the traction of the rotating magnetic field of the stator, the rotor assembly rotates. The rotor assembly is fixedly connected to the output part 71. When the rotor assembly rotates, it can drive the output part 71 to rotate together.

[0174] In some embodiments of this application, the valve structure includes a stop assembly, which is fixedly connected to the valve body 4. The rotor assembly is provided with a stop lever, which cooperates with the stop assembly to limit the number of rotations of the rotor assembly.

[0175] In some embodiments of this application, the mounting base 74 is provided with an internal thread, and the output part 71 is provided with an external thread. The output part 71 is screwed onto the mounting base 74 and fixedly connected to the rotating member 75, thereby switching the rotational motion of the rotating member 75 into the linear motion of the output part 71. That is, the output part 71 can move in the first direction Y to drive the piston to move in the first direction Y, thereby switching the valve structure between the open state and the closed state.

[0176] In some embodiments of this application, the valve housing 42 is connected to the valve cover 44 via the valve body 43, and a portion of the valve core 1 is located inside the valve body 43, while another portion is located inside the valve housing 42. The valve housing 42, valve body 43, valve cover 44, and valve seat 411 constitute the main housing part of the valve structure. At the same time, splitting the valve body 4 into the valve housing 42, valve body 43, valve cover 44, and valve seat 411 also facilitates the assembly of components within the valve structure.

[0177] In some embodiments of this application, a sealing ring is also provided between the seal 412 and the valve seat 411 to prevent the medium from leaking from the gap between the seal 412 and the valve seat 411.

[0178] In some embodiments of this application, a connecting ring 21 is also fixedly sleeved on the valve body 43, and the connecting ring 21 has external threads on its circumference to facilitate the connection of the valve structure with other components.

[0179] This application also proposes a vehicle including a valve structure, as described above. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0180] The vehicle may be a gasoline-powered vehicle, a plug-in hybrid electric vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions.

[0181] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0182] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0183] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0184] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A valve structure, characterized in that, include: Valve seat assembly, having a valve port; A valve housing, connected to the valve seat assembly, and having a valve cavity; The throttling section is located within the valve cavity and fixed relative to the valve seat assembly; and A valve core is movably disposed within the valve cavity. The valve core has a first position and a second position. When the valve core is in the first position and the second position, the valve core separates from the valve seat assembly to open the valve port. A first channel is formed between the valve core and the valve seat assembly, and a second channel is formed between the valve core and the throttling part. The valve cavity, the second channel, the first channel, and the valve port are sequentially connected. When the valve core is in the first position, the flow area of ​​the first channel is equal to the flow area of ​​the second channel. During the movement of the valve core from the first position to the second position, the flow area of ​​the second channel is smaller than the flow area of ​​the first channel.

2. The valve structure according to claim 1, characterized in that, The valve core also has a third position, in which the valve core abuts against the valve seat assembly to close the valve port; During the movement of the valve core from the third position to the first position, the flow area of ​​the second channel is greater than the flow area of ​​the first channel.

3. The valve structure according to claim 2, characterized in that, When the valve core is in the third position, the minimum distance between the throttling section and the valve core is L2; ​​wherein, L2 satisfies: 0.01mm≤L2≤1mm.

4. The valve structure according to claim 1, characterized in that, During the movement of the valve core from the first position to the second position, the flow area of ​​the second channel gradually increases.

5. The valve structure according to claim 4, characterized in that, The valve core moves along a first direction; The throttling section has a first guide surface facing the valve core, and the extension direction of the first guide surface is inclined relative to the first direction.

6. The valve structure according to claim 5, characterized in that, The valve structure also includes: A flow guide is located inside the valve cavity and connected to the end of the throttling section away from the valve core; Wherein, the size of the flow guide in the first direction is greater than the size of the flow throttling part in the first direction.

7. The valve structure according to claim 6, characterized in that, In a second direction perpendicular to the first direction, the distance between the flow guide and the valve core is greater than the distance between the throttling part and the valve core.

8. The valve structure according to claim 6, characterized in that, The guide surface has a second guide surface, which faces the valve core and is located on the side of the first guide surface away from the first channel. The extension direction of the second guide surface is inclined relative to the first direction.

9. The valve structure according to claim 8, characterized in that, The slope of the second guide surface is less than the slope of the first guide surface.

10. The valve structure according to claim 8, characterized in that, The first guide surface is connected to the second guide surface.

11. The valve structure according to any one of claims 1 to 10, characterized in that, The throttling section is arranged around the valve core.

12. The valve structure according to any one of claims 1 to 10, characterized in that, The valve seat assembly includes: A valve seat, connected to the valve body, wherein the valve port is formed in the valve seat; and A sealing element is provided on the valve seat; When the valve core is in the third position, the valve core abuts against the sealing element.

13. The valve structure according to claim 12, characterized in that, At least a portion of the valve seat is spaced apart from at least a portion of the throttling section; The seal is located between the valve seat and the throttling section.

14. The valve structure according to claim 13, characterized in that, At least one of the valve seat and the throttling part is provided with at least one locking protrusion; The protrusion abuts against the seal.

15. A vehicle, characterized in that, Includes the valve structure as described in any one of claims 1 to 14.

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