Valve structure and vehicle

Abstract

The utility model relates to a valve structure and a vehicle, the valve structure comprises a valve body, a valve core and a sealing piece, and the valve body is provided with a valve port; the valve core is movably arranged in the valve body; the sealing element is arranged on the valve body and surrounds the valve port; the sealing element is provided with a top surface facing the valve core, a bottom surface deviating from the valve core, and an outer side surface and an inner side surface which are connected with the top surface and the bottom surface; wherein the top face is used for abutting against the valve element to seal the valve port, and the bottom face, the outer side face and the inner side face all abut against the valve body. In the embodiment, when the valve structure is in the closed state, the valve element abuts against the top face of the sealing piece, the bottom face, the outer side face and the inner side face of the sealing piece are all abutted against the valve body outside the top face, making contact with the valve element, of the sealing piece, and in other words, when the valve element abuts against the top face of the sealing piece, the sealing piece is not prone to creep deformation due to space limitation in the valve body, and the sealing piece is not prone to deformation. And the service life and the stability of the valve structure are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a valve structure and a vehicle. BACKGROUND

[0002] In the related art, the valve core in the throttle valve is abutted with the sealing element to realize the closure of the throttle valve. However, the sealing element is prone to creep in the process of being extruded by the valve core for a long time, thereby affecting the service life and stability of the throttle valve. CONTENT OF THE UTILITY MODEL

[0003] The valve structure and the vehicle provided by the embodiments of the present application slow down the creep speed of the sealing element and improve the service life and stability of the valve structure, so as to at least partially solve the above technical problems.

[0004] In order to achieve the above-mentioned purpose, according to a first aspect of the present application, a valve structure is provided, which comprises:

[0005] a valve body having a valve port;

[0006] a valve core movably arranged in the valve body;

[0007] a sealing element arranged on the valve body and surrounding the valve port, the sealing element having a top surface facing the valve core, a bottom surface facing away from the valve core, and an outer side surface and an inner side surface connecting the top surface and the bottom surface;

[0008] wherein the top surface is used to abut the valve core to close the valve port, and the bottom surface, the outer side surface and the inner side surface all abut the valve body.

[0009] In some embodiments, the valve body comprises:

[0010] a valve seat, the valve port being formed on the valve seat, at least part of the valve seat being opposite to the valve core in the movement direction of the valve core and being provided with a mounting groove;

[0011] wherein the sealing element is located in the mounting groove, and the groove wall of the mounting groove abuts the bottom surface, the outer side surface and the inner side surface.

[0012] In some embodiments, the valve body comprises:

[0013] a valve seat, the valve port being formed on the valve seat;

[0014] a valve shell connected with the valve seat, the valve shell having a valve cavity, the valve cavity being in communication with the valve port, the valve core being movably arranged in the valve cavity, at least part of the valve shell being opposite to the valve core in the movement direction of the valve core and being provided with a mounting groove;

[0015] wherein the sealing element is located in the mounting groove, and the groove wall of the mounting groove abuts the bottom surface, the outer side surface and the inner side surface.

[0016] In some embodiments, the valve body comprises:

[0017] a valve seat, a valve port being formed on the valve seat;

[0018] a valve housing connected with the valve seat, the valve housing having a valve cavity, the valve cavity being communicated with the valve port, and a valve core being movably arranged in the valve cavity;

[0019] wherein at least part of the valve seat and at least part of the valve housing enclose a mounting groove, an opening of the mounting groove being opposite to the valve core in a moving direction of the valve core;

[0020] a sealing member being arranged in the mounting groove, and a groove wall of the mounting groove abutting against a bottom surface, an outer side surface and an inner side surface.

[0021] In some embodiments, the valve seat comprises:

[0022] a first sub-section, at least part of the first sub-section being arranged in the valve cavity and connected with the valve housing; and

[0023] a second sub-section, the second sub-section being connected with the part of the first sub-section arranged in the valve cavity and being arranged in the valve cavity;

[0024] wherein at least part of the second sub-section is spaced apart from a cavity wall of the valve cavity, and the first sub-section, the second sub-section and the cavity wall of the valve cavity enclose the mounting groove.

[0025] In some embodiments, the valve body comprises:

[0026] a valve seat, a valve port being formed on the valve seat;

[0027] a valve housing connected with the valve seat and having a valve cavity;

[0028] a throttling portion being arranged in the valve cavity and fixed relative to the valve seat;

[0029] the valve core having a first position and a second position, when the valve core is in the first position and the second position, the valve core is separated from the sealing member to open the valve port, a first passage being formed between the valve core and the sealing member, a second passage being formed between the valve core and the throttling portion, and the valve cavity, the second passage, the first passage and the valve port being communicated in sequence;

[0030] wherein when the valve core is in the first position, an area of the first passage is equal to an area of the second passage, and in a moving stroke of the valve core from the first position to the second position, a flow area of the second passage is smaller than a flow area of the first passage.

[0031] In some embodiments, the valve core further has a third position, when the valve core is in the third position, the valve core abuts against the sealing member to close the valve port;

[0032] wherein in a moving stroke of the valve core from the third position to the first position, the flow area of the second passage is greater than the flow area of the first passage.

[0033] In some embodiments, the minimum distance between the throttling portion and the valve core when the valve core is in the third position is L2; wherein L2 satisfies: 0.01mm≤L2≤1mm.

[0034] In some embodiments, the area of the second channel gradually increases in the active stroke of the valve core from the first position to the second position.

[0035] In some embodiments, the valve core is active in the first direction;

[0036] The throttling portion has a first flow guide surface facing the valve core, and the extension direction of the first flow guide surface is inclined relative to the first direction.

[0037] In some embodiments, at least part of the throttling portion abuts against the top surface of the sealing member.

[0038] In some embodiments, one of the valve body and the sealing member is provided with a foolproof portion, and the other is provided with a relief groove matching the shape of the foolproof portion.

[0039] According to a second aspect of the present application, a vehicle is provided, which comprises the valve structure.

[0040] The valve structure in the embodiments of the present application comprises a valve body, a valve core and a sealing member, the valve body has a valve port; the valve core is active arranged in the valve body; the sealing member is arranged on the valve body and surrounds the valve port, and has a top surface facing the valve core, a bottom surface facing away from the valve core, and an outer side surface and an inner side surface connecting the top surface and the bottom surface; wherein the top surface is used to abut against the valve core to close the valve port, and the bottom surface, the outer side surface and the inner side surface all abut against the valve body; in the present embodiment, when the valve structure is in a closed state, the valve core abuts against the top surface of the sealing member, and the bottom surface, the outer side surface and the inner side surface of the sealing member outside the top surface in contact with the valve core are all abutted against by the valve body, that is, when the valve core abuts against the top surface of the sealing member, the sealing member is not easy to creep due to the space limitation in the valve body, thereby improving the service life and stability of the valve structure.

[0041] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0043] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0044] Figure 1 is a cross-sectional structure diagram of a valve structure provided in the example embodiment of the present application;

[0045] Figure 2 is an assembly diagram of a valve seat and a valve shell in the example embodiment of the present application;

[0046] Figure 3 is a cross-sectional diagram of a valve seat in the example embodiment of the present application;

[0047] Figure 4 is a cross-sectional diagram of a seal in the example embodiment of the present application.

[0048] Figure 5 is a cross-sectional structure diagram of a valve structure provided in the example embodiment of the present application;

[0049] Figure 6 is a partial cross-sectional structure diagram of a valve structure provided in the example embodiment of the present application;

[0050] Figure 7 is a cross-sectional structure diagram of a valve core provided in the example embodiment of the present application;

[0051] Figure 8 is Figure 6 is an enlarged diagram of A in FIG. 11;

[0052] Figure 9 is Figure 6 is an enlarged diagram of B in FIG. 11;

[0053] Figure 10 is Figure 5 is an enlarged diagram of C in FIG. 11;

[0054] Figure 11 is a partial cross-sectional diagram of a valve structure in an open state provided in the example embodiment of the present application;

[0055] Figure 12 is an assembly diagram of a valve seat and a valve shell in the example embodiment of the present application;

[0056] Figure 13 is a cross-sectional diagram of a valve shell in the example embodiment of the present application.

[0057] BRIEF DESCRIPTION OF THE DRAWINGS

[0058] 1, valve core; 101, connecting portion; 101A, first outer side surface; 102, pressurizing portion; 102A, pressure receiving surface; 102B, second outer side surface; 102C, end surface; 1021, flat surface; 1022, circular arc surface; 102D, inner surface; 2, groove; 3, cavity; 4, valve body; 41, valve seat assembly; 411, valve seat; 412, sealing member; 5, valve cavity; 6, valve port; 7, driving assembly; 71, output portion; 72, first elastic member; 73, limiting member; 74, mounting seat; 75, rotating member; 76, connecting member; 77, second elastic member; 8, mounting cavity; 42, valve shell; 9, throttling portion; 91, first flow guiding surface; 10, first passage; 11, second passage; 12, flow guiding portion; 121, second flow guiding surface; 13, clamping protrusion; 14, top surface; 15, bottom surface; 16, outer side surface; 17, inner side surface; 18, mounting groove; 4111, first sub-segment; 4112, second sub-segment; 19, fool-proof portion; 20, avoiding groove; 43, valve body; 44, valve cover; 21, connecting ring; 22, inlet. DETAILED DESCRIPTION

[0059] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the protection scope of the present application.

[0060] The present application provides a valve structure, Figures 1 to 13 for some embodiments of the present application.

[0061] Please refer to Figures 1 to 2 In some embodiments of the present application, the valve structure comprises a valve body 4, a valve core 1 and a sealing member 412, the valve body 4 has a valve port 6; the valve core 1 is movably arranged in the valve body 4; the sealing member 412 is arranged on the valve body 4 and surrounds the valve port 6, the sealing member 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; wherein 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.

[0062] In the technical solutions of the present application, when the valve structure is in a closed state, the valve core 1 abuts against the top surface 14 of the sealing member 412, and the bottom surface 15, the outer side surface 16 and the inner side surface 17 of the sealing member 412 outside the top surface 14 contacting the valve core 1 are all abutted against by the valve body 4, that is, when the valve core 1 abuts against the top surface 14 of the sealing member 412, the sealing member 412 is not easy to creep due to the space limitation in the valve body 4, thereby improving the service life and stability of the valve structure.

[0063] It should be noted that, since the sealing member 412 is arranged around the valve port 6, when the valve core 1 abuts against the sealing member 412, the sealing performance of the valve core 1 and the sealing member 412 to the valve structure can be ensured.

[0064] In some embodiments of the present application, the valve body 4 comprises a valve seat 411, the valve port 6 is formed on the valve seat 411, and at least part of the valve seat 411 is opposite to the valve core 1 in the movement direction of the valve core 1 and is provided with a mounting groove 18; wherein the sealing member 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 member 412 is arranged in the mounting groove 18 on the valve seat 411, 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 member 412, so that when the valve core 1 abuts against the top surface 14 of the sealing member 412, the sealing member 412 is not easy to creep due to the space limitation of the mounting groove 18, thereby improving the service life and stability of the valve structure.

[0065] In some embodiments of the present application, the valve body 4 comprises a valve seat 411 and a valve shell 42, the valve port 6 is formed on the valve seat 411; the valve shell 42 is connected with the valve seat 411, the valve shell 42 has a valve cavity 5, the valve cavity 5 communicates with the valve port 6, the valve core 1 is movably arranged in the valve cavity 5, and at least part of the valve shell 42 is opposite to the valve core 1 in the movement direction of the valve core 1 and is provided with a mounting groove 18; wherein the sealing member 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 member 412 is arranged in the mounting groove 18 on the valve shell 42, 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 member 412, so that when the valve core 1 abuts against the top surface 14 of the sealing member 412, the sealing member 412 is not easy to creep due to the space limitation of the mounting groove 18, thereby improving the service life and stability of the valve structure.

[0066] In some embodiments of the present application, the valve body 4 comprises a valve seat 411 and a valve shell 42, the valve port 6 is formed on the valve seat 411; the valve shell 42 is connected with the valve seat 411, the valve shell 42 has a valve cavity 5, the valve cavity 5 is communicated with the valve port 6, and the valve core 1 is movably arranged in the valve cavity 5; wherein at least part of the valve seat 411 and at least part of the valve shell 42 enclose to form a mounting groove 18, the groove opening of the mounting groove 18 is opposite to the valve core 1 in the moving direction of the valve core 1; 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 valve seat 411 can form the mounting groove 18 when assembled with the valve shell 42, and the sealing element 412 is arranged in the mounting groove 18 formed when the valve seat 411 is assembled with 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 easy to creep due to the space limitation of the mounting groove 18, thereby improving the service life and stability of the valve structure.

[0067] Wherein the form of the mounting groove 18 combined between the valve seat 411 and the valve shell 42 is not limited.

[0068] Please refer to Figures 2 to 3 In some embodiments of the present application, the valve seat 411 comprises a first sub-section 4111 and a second sub-section 4112, at least part of the first sub-section 4111 is located in the valve cavity 5 and connected with the valve shell 42; the second sub-section 4112 is connected with the part of the first sub-section 4111 located in the valve cavity 5 and located in the valve cavity 5; wherein at least part of the second sub-section 4112 is spaced apart from the cavity wall of the valve cavity 5, and the first sub-section 4111, the second sub-section 4112 and the cavity wall of the valve cavity 5 enclose to form the mounting groove 18; that is, in this embodiment, the second sub-section 4112 of the valve seat 411 abuts against the inner side surface 17 of the sealing element 412, the first sub-section 4111 of the valve seat 411 abuts against the bottom surface 15 of the sealing element 412, and the outer side surface 16 of the valve seat 411 abuts against the valve shell 42, and through the cooperation of the valve seat 411 and the valve shell 42, when the valve core 1 abuts against the top surface 14 of the sealing element 412, the sealing element 412 is not easy to creep due to the space limitation of the mounting groove 18, thereby improving the service life and stability of the valve structure.

[0069] In some embodiments of the present application, the valve structure further comprises a throttling portion 9, the throttling portion 9 is connected with the valve shell 42 and abuts against the top surface 14 of the sealing element 412; wherein the arrangement of the throttling portion 9 can further reduce the exposed area of the sealing element 412, so that the sealing element 412 is not easy to creep, thereby improving the service life and stability of the valve structure.

[0070] In some embodiments of the present application, the valve structure further comprises a flow guide 12 connecting the throttling portion 9 and the valve shell 42, and the flow guide 12 also abuts against the top surface 14 of the sealing member 412; wherein the flow guide 12 can further reduce the exposed area of the sealing member 412, so that the sealing member 412 is less likely to creep, thereby improving the service life and stability of the valve structure.

[0071] In some embodiments of the present application, the throttling portion 9 and the flow guide 12 are located on one side of the valve core 1 in the second direction X, so as to avoid interference of the arrangement of the throttling portion 9 and the flow guide 12 with the abutment between the valve core 1 and the sealing member 412.

[0072] Referring to Figures 2 to 4 In some embodiments of the present application, one of the valve body 4 and the sealing member 412 is provided with a foolproof portion 19, and the other is provided with a relief groove 20 matched with the shape of the foolproof portion 19; by respectively providing the valve body 4 and the sealing member 412 with the foolproof portion 19 and the relief groove 20, the sealing member 412 can be easily assembled to the designated position, and the problem of incorrect assembly of the sealing member 412 in the valve structure can be avoided.

[0073] In some embodiments of the present application, the foolproof portion 19 is arranged on the valve shell 42, and the relief groove 20 is formed on the sealing member 412.

[0074] Referring to Figures 5 to 8 In some embodiments of the present application, the valve core 1 is arranged in the valve structure, and the valve core 1 comprises a connecting portion 101 and a pressurizing portion 102 connected with each other and is configured to open or close the valve structure; wherein at least a part of the outer contour of the pressurizing portion 102 protrudes from the outer contour of the connecting portion 101.

[0075] It should be noted that when the valve structure is in the open state, the medium flows from the valve cavity 5 of the valve structure to the valve port 6 and then flows out of the valve structure; and 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 blocking 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.

[0076] Wherein, since at least a part of the outer contour of the pressurizing portion 102 of the valve core 1 protrudes from the outer contour of the connecting portion 101, when the valve structure is in the closed state, the high pressure in the valve structure will exert a certain pressure on the surface of the outer contour of the pressurizing portion 102 which protrudes from the outer contour of the connecting portion 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.

[0077] When the high pressure in the valve structure exerts a certain pressure on the surface of the outer contour of the pressurizing portion 102 that protrudes from the outer contour of the connecting portion 101, the valve core 1 and the part in abutment with the valve core 1 are more difficult to separate, thereby ensuring the sealing of the valve structure in the closed state.

[0078] In some embodiments of the present application, the connecting portion 101 and the pressurizing portion 102 are connected in the first direction Y, and at least part 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 arranged in the valve structure in the first direction Y, and at least part 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 exert a certain pressure on the valve body 4 in the first direction Y, thereby ensuring that the valve body 4 does not move when the valve structure is in the closed state.

[0079] In some embodiments of the present 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, and L1 satisfies 0.1mm≤L1≤0.5mm. In this embodiment, L1 is designed to satisfy this interval range, so as to ensure that the valve core 1 can provide sufficient sealing effect in the valve structure when subjected to high pressure, while 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 exerted on the valve body 4, thereby affecting the sensitivity of the normal driving of the valve structure.

[0080] If L1 is less than 0.1mm, there may be a problem that the high pressure environment in the valve structure exerts too small pressure on the valve core 1, and cannot provide good sealing effect for the valve structure.

[0081] If L1 is greater than 0.5mm, there may be a problem that the high pressure area in the valve structure exerts too much pressure on the valve core 1, thereby affecting the normal driving sensitivity of the valve structure.

[0082] In some embodiments of the present application, at least part of the connecting portion 101 and the pressurizing portion 102 are designed in a cylindrical shape. 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.

[0083] In some embodiments of the present application, the pressurizing portion 102 has a dimension S1 in the plane 1021 in the radial direction of the valve core 1, and the connecting portion 101 has a dimension S2 in the plane 1021 in the radial direction of the valve core 1; when the pressure of the high-pressure environment in the valve structure is P1, the pressurizing portion 102 can provide a pressure F2 = P1 x (S1-S2) to the valve core 1; in addition, the driving force of the valve core 1 when the valve structure is switched is F1, the elastic force of the spring when it abuts against the valve core 1 is F3, and the maximum resistance of the valve core 1 in the first direction Y when the valve core 1 moves from the closed state to the open state is F4; wherein F1>F2+F3+F4 is satisfied, so that the valve core 1 can be sealed reliably while ensuring the normal driving sensitivity of the valve structure.

[0084] The value of L1 can be 0.1 mm, 0.12 mm, 0.14 mm, 0.16 mm, 0.18 mm, 0.2 mm, 0.22 mm, 0.24 mm, 0.26 mm, 0.28 mm, 0.3 mm, 0.32 mm, 0.34 mm, 0.36 mm, 0.38 mm, 0.4 mm, 0.42 mm, 0.44 mm, 0.46 mm, 0.48 mm, 0.5 mm. The value of L1 is not limited to the listed values, and other values within the range are also applicable.

[0085] In some embodiments of the present application, the connecting portion 101 has a first outer side 101A, which is at least part of the outer contour of the connecting portion 101; the pressurizing portion 102 has a pressure-bearing surface 102A, which is at least part of the outer contour of the pressurizing portion 102; the pressure-bearing surface 102A is completely convex with respect to the first outer side 101A; wherein according to the pressure and pressure calculation formula: F = PS, when the pressure-bearing surface 102A is completely convex with respect to the first outer side 101A, the pressure value applied by the high-pressure environment to the valve core 1 for sealing is the maximum, thereby ensuring the sealing effect of the valve core 1 when the valve structure is in the sealed state.

[0086] It should be noted that the first outer side 101A is at least part of the outer contour of the connecting portion 101, that is, the outer contour of the connecting portion 101 can be formed by the first outer side 101A, or the first outer side 101A and other surfaces can jointly form the outer contour; this is not limited here.

[0087] Similarly, the pressure-bearing surface 102A is at least part of the outer contour of the pressurizing portion 102, that is, the outer contour of the pressure-bearing surface 102A can be formed by the pressure-bearing surface 102A, or the pressure-bearing surface 102A and other surfaces can jointly form the outer contour; this is not limited here.

[0088] In some embodiments of the present application, at least part of the pressure-bearing surface 102A is inclined relative to the first outer side surface 101A, so that the resistance received by the medium flowing in the valve structure is reduced, thereby ensuring smooth flow of the medium in the valve structure.

[0089] If the pressure-bearing surface 102A is in a stepped or uneven surface structure, turbulence or flow resistance is likely to occur when the medium flows in the valve structure.

[0090] In addition, since at least part of the pressure-bearing surface 102A is inclined relative to the first outer side surface 101A, the surface of the pressure-bearing surface 102A is flat and easy to process.

[0091] In some embodiments of the present application, the pressure-bearing surface 102A is inclined relative to the first outer side surface 101A at an angle α, and α is an obtuse angle; that is, in this embodiment, α satisfies 90° < α < 180°, and designing α to satisfy this range can ensure that the high-pressure environment provides sufficient sealing pressure for the valve core 1 in the closing direction while reducing the flow resistance of the medium flowing in the valve structure, thereby ensuring the working stability of the valve structure.

[0092] If α is less than 90°, a concave region is formed between the pressure-bearing surface 102A and the first outer side surface 101A, which on the one hand affects the smooth flow of the medium in the valve structure and is likely to form turbulence or flow resistance, and on the other hand, the concave region is easy to accumulate impurities during the working process of the valve structure, thereby affecting the normal working of the valve structure.

[0093] If α is greater than 180°, the high-pressure environment will exert a certain pressure on the valve core 1 in the opening direction, thereby failing to ensure the sealing effect of the valve core 1.

[0094] In some embodiments of the present application, the valve core 1 moves in the first direction Y and abuts against or separates from the sealing member 412 to close or open the valve structure; if α is greater than 180°, the high-pressure environment will exert a certain pressure on the valve core 1 in the direction of the first direction Y and away from the sealing member 412, thereby failing to ensure the sealing effect of the valve core 1.

[0095] The value of a 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°, 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 a is not limited to the listed values, and other values within the range are also applicable.

[0096] In some embodiments of the present application, one end of the pressure receiving surface 102A is connected to one end of the first outer side surface 101A. In this way, the pressure applied to the valve element 1 in the closing direction by the high-pressure environment is located on the pressure receiving surface 102A, thereby ensuring the sealing effect of the valve element 1.

[0097] In addition, the pressure receiving surface 102A is also a bevel surface. The bevel surface can reduce the turbulence or flow resistance of the medium flowing in the valve structure.

[0098] In some embodiments of the present application, at least part of the end of the pressure receiving surface 102A connected to the first outer side surface 101A is an arc surface. By setting the end of the pressure receiving surface 102A connected to the first outer side surface 101A as an arc surface, the stress concentration on the valve element 1 can be reduced, and the strength of the valve element 1 can be improved. At the same time, the design of the arc surface can also simplify the processing technology, thereby reducing the production cost of the valve element 1.

[0099] In some embodiments of the present application, the connecting portion 101 has a groove 2. The groove 2 extends from the first outer side surface 101A to the inside of the connecting portion 101. By setting the groove 2, the groove 2 has a groove wall facing the pressurizing portion 102. The high-pressure environment can provide pressure to the valve element 1 in the closing direction by applying a certain pressure to the groove wall of the groove 2 facing the pressurizing portion 102, thereby improving the sealing effect of the valve element 1.

[0100] It should be noted that the closing direction is the direction in which the valve element 1 moves towards the sealing member 412 in the first direction Y, and the opening direction is the direction in which the valve element 1 moves away from the sealing member 412 in the first direction Y.

[0101] In some embodiments of the present application, the groove 2 is further connected with the pressure bearing surface 102A; wherein, due to the difference in material and roughness between the connecting portion 101 and the pressurizing portion 102 of the valve core 1, the groove 2 is arranged on the side of the connecting portion 101 close to the pressurizing portion 102, so as to facilitate the production and processing of the valve core 1.

[0102] In some embodiments of the present application, the pressurizing portion 102 has a second outer side surface 102B connected with the pressure bearing surface 102A at the end away from the first outer side surface 101A; by further arranging the second outer side surface 102B on the pressurizing portion 102, the processing of the valve core 1 is facilitated, and at the same time, due to the fact that the inlet 22 of the valve structure is located on the side of the valve core 1 in the second direction X and communicates with the valve cavity 5, the second outer side surface 102B can further provide a certain buffering effect when the fluid enters the interior of the valve structure from the inlet 22 of the valve structure.

[0103] In addition, if the valve core 1 does not have the second outer side surface 102B, the pressure bearing surface 102A is arranged close to the sealing element 412 in the first direction Y, and when the valve structure is switched from the closed state to the open state, the pressure bearing surface 102A approaches the position of the valve port 6 and is used for the medium to pass through, and due to the fact that the pressure bearing surface 102A is a bevel, when the medium flows from the gap between the pressure bearing surface 102A and the sealing element 412 to the valve port 6, it is easy to generate turbulence and flow resistance, thereby affecting the working stability of the valve structure.

[0104] In some embodiments of the present application, the pressurizing portion 102 further has an end surface 102C; wherein, the end surface 102C is located at the end of the pressurizing portion 102 away from the connecting portion 101 and is connected with the second outer side surface 102B; wherein, the end surface 102C is used for abutting against the sealing element 412, so that the valve structure is in the closed state. And the end surface 102C has a certain area, so that the contact area between the valve core 1 and the sealing element 412 is increased, thereby improving the sealing performance of the valve core 1.

[0105] Please refer to Figure 9 In some embodiments of the present application, the end surface 102C includes a plane 1021 and a circular arc surface 1022 connected with each other; the plane 1021 is connected with the second outer side surface 102B through the circular arc surface 1022; wherein, the plane 1021 of the end surface 102C is used for abutting against the sealing element 412 to close the valve structure, and the plane 1021 is connected with the second outer side surface 102B through the circular arc surface 1022, so as to facilitate the deburring and other processing operations on the connection between the end surface 102C and the second outer side surface 102B.

[0106] In some embodiments of the present application, the connecting portion 101 is connected with the pressurizing portion 102 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 portion 101 and the outer contour of the pressurizing portion 102 is L1; the radius of the circle on which the circular arc surface 1022 is located is R1; wherein L1 and R1 satisfy: 0.03mm≤R1≤L1; in this embodiment, by setting R1 to satisfy this interval range, it is convenient to perform chamfering processing between the end surface 102C and the second outer side surface 102B, while avoiding the problem that R1 is too large, so that the high-pressure environment exerts too much pressure on the valve core 1 in the opening direction, thereby affecting the sealing performance of the valve core 1.

[0107] It can be understood that, since the circular arc surface 1022 is arc-shaped, at least part of the circular arc surface 1022 is spaced apart from the sealing element 412, and the high-pressure environment exerts pressure on the part of the circular arc surface 1022 spaced apart from the sealing element 412 in the opening direction.

[0108] If R1 is less than 0.03mm, it is not easy to perform chamfering processing between the end surface 102C and the second outer side surface 102B.

[0109] If R1 is greater than L1, there is a problem that R1 is too large, so that the high-pressure environment exerts too much pressure on the valve core 1 in the opening direction, thereby affecting the sealing performance of the valve core 1.

[0110] The pressure exerted by the high-pressure environment provided by the circular arc surface 1022 on the valve core 1 in the closing direction is all located on the pressure-bearing surface 102A, thereby ensuring the sealing effect of the valve core 1.

[0111] In some embodiments of the present application, the pressurizing portion 102 has a cavity 3 therein; wherein the thickness of the end of the pressurizing portion 102 close to the connecting portion 101 is greater than the thickness of the end of the pressurizing portion 102 away from the connecting portion 101; such arrangement is to reduce the weight of the valve core 1, thereby saving the manufacturing cost of the valve core 1.

[0112] At the same time, since the end of the pressurizing portion 102 close to the connecting portion 101 mainly plays a role of connecting the connecting portion 101, and the end of the pressurizing portion 102 away from the connecting portion 101 mainly plays a sealing role; such arrangement can increase the contact area of the pressurizing portion 102 and the connecting portion 101, that is, provide the strength of the valve core 1, while reducing the weight of the valve core 1.

[0113] In some embodiments of the present application, in the direction away from the connecting portion 101, the thickness of the pressurizing portion 102 gradually decreases; such arrangement makes the thickness dimension of the valve core 1 in the second direction X transition smoothly in the first direction Y, which is convenient for the operation tooling to produce and process the valve core 1.

[0114] Similarly, the arrangement can also reduce the weight of the valve core 1, thereby saving the manufacturing cost of the valve core 1.

[0115] In some embodiments of the present application, the pressurizing portion 102 has an inner surface 102D forming the cavity 3; the extension direction of the inner surface 102D is inclined relative to the first direction Y; the arrangement is because the cavity 3 of the pressurizing portion 102 is for the insertion of a fitting tool, thereby enabling the assembly of the valve core 1 in the valve structure; by arranging the inner surface 102D to be inclined, the collision interference between the fitting tool and the valve core 1 when the fitting tool is inserted into the cavity 3 can be avoided, thereby preventing the damage to the product.

[0116] In some embodiments of the present application, the inside of the connecting portion 101 is also hollow and communicates with the cavity 3, thereby further reducing the weight of the valve core 1, thereby saving the manufacturing cost of the valve core 1.

[0117] The present application also provides a valve structure, which comprises 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 arranged in the valve cavity 5 to open or close the valve port 6; the valve core 1 is as described above; since the valve structure adopts all the technical solutions of the above-mentioned embodiments, it at least has the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described herein.

[0118] When the valve port 6 is closed by the valve core 1, the valve cavity 5 is in a high-pressure environment, and the valve port 6 is in a low-pressure environment.

[0119] In some embodiments of the present application, the valve body 4 comprises a valve seat assembly 41, the valve port 6 is formed in the valve seat assembly 41, and the valve core 1 is arranged on one side of the valve seat assembly 41 in the first direction Y; the valve core 1 can move in the first direction Y and separate from or abut against the valve seat assembly 41 to open or close the valve port 6; that is, in this embodiment, the valve cavity 5 communicates with or is spaced from the valve port 6 by the cooperation between the valve core 1 and the valve seat assembly 41, thereby realizing the opening and closing of the valve structure.

[0120] 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 is also affected by the abutting force of the valve core 1, thereby ensuring the firmness of the seal between the valve core 1 and the valve seat assembly 41.

[0121] In some embodiments of the present application, the valve seat assembly 41 comprises a valve seat 411 and a sealing member 412, the valve port 6 is formed in the valve seat 411, and the sealing member 412 is arranged on the valve seat 411; the valve core 1 is arranged on one side of the valve seat 411 or the sealing member 412 in the first direction Y; that is, in this embodiment, the valve core 1 separates from or abuts against the valve seat 411 or the sealing member 412 in the first direction Y to open or close the valve port 6, thereby realizing the opening and closing of the valve structure.

[0122] In some embodiments of the present application, the valve core 1 is arranged 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 arranged on the valve seat 411 and located on the inner side of the valve core 1, thereby improving the sealing performance between the valve core 1 and the valve seat assembly 41.

[0123] In some embodiments of the present application, at least one of the valve core 1 and the sealing member 412 is an elastic member; by arranging at least one of the valve core 1 and the sealing member 412 as an elastic member, at least one of the valve core 1 and the sealing member 412 can elastically deform when the valve core 1 abuts against the sealing member 412, thereby increasing the contact area between the valve core 1 and the sealing member 412 and further improving the sealing performance between the valve core 1 and the valve seat assembly 41.

[0124] In some embodiments of the present application, the valve structure further comprises a driving assembly 7 configured to drive the valve core 1 to move in the first direction Y so as to separate or abut the valve core 1 and the valve seat assembly 41; that is, in this embodiment, the driving assembly 7 is arranged in the valve structure to drive the valve core 1 to move in the valve body 4.

[0125] Wherein, the form of the driving assembly 7 driving the valve core 1 to move is not limited, which can be mechanical driving, electromagnetic driving, etc.

[0126] In some embodiments of the present application, the valve core 1 has a third position and a fourth position, the valve core 1 abuts against the valve seat assembly 41 when the valve core 1 is in the third position, and the valve body 4 is separated from the valve seat assembly 41 when the valve core 1 is in the fourth position; the driving assembly 7 comprises an output portion 71 movably arranged in the valve body 4 in 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 output portion 71 is arranged to move in the first direction Y so as to drive the valve core 1 to move in the first direction Y, that is, the valve core 1 can move in the first direction Y together with the output portion 71.

[0127] In some embodiments of the present application, the valve core 1 is connected with the output portion 71 and can move relative to the output portion 71 in the first direction Y; the driving assembly 7 comprises a first elastic member 72 arranged between the output portion 71 and the valve core 1, the first elastic member 72 has a first compression state and a second compression state, and the compression amount of the first elastic member 72 in the first compression state is smaller 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 portion 71 is relatively fixed with the valve core 1, and the output portion 71 can drive the valve core 1 to move between the third position and the fourth position; when the valve core 1 is in the third position and the output portion 71 moves relative to the valve core 1, the first elastic member 72 is in the second compression state.

[0128] In the above embodiments, the valve core 1 and the output portion 71 are elastically connected by the first elastic member 72, when the external force acting on the first elastic member 72 is less than the minimum compression force of the first elastic member 72 or 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 portion 71 maintain a relative fixed relationship, so that the movement of the output portion 71 in the first direction Y can 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 portion 71 continues to move in the valve closing direction, the first elastic member 72 will be compressed, that is, switched 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 portion 71, so that there is a safety margin between the valve core 1 and the output portion 71, avoiding the continuous movement of the output portion 71 causing damage to the inside of the valve structure when the valve core 1 is in the third position.

[0129] At the same time, in the above embodiments, if the pressure applied to the valve core 1 by the high-pressure environment is too large, the valve core 1 will move relative to the output portion 71, and under the action of the first elastic member 72, the output portion 71 will not be affected by the movement of the valve core 1, thereby maintaining the original position; in this way, the accuracy of the valve structure adjustment is ensured.

[0130] In some embodiments of the present application, the side of the output portion 71 close to the valve core 1 has a mounting cavity 8, and at least part of the valve core 1 is located in the mounting cavity 8; the drive assembly 7 further comprises a limiting member 73, which is located in the mounting cavity 8 and can move along the first direction Y, and the limiting member 73 is fixed with the valve core 1 to limit the separation of the valve core 1 and the output portion 71; wherein the first elastic member 72 is arranged between the limiting member 73 and the cavity wall of the mounting cavity 8. In this embodiment, the valve core 1 is riveted with the limiting member 73, thereby ensuring the firm fixation between the valve core 1 and the limiting member 73; and by the fixing method of extending part of the valve core 1 into the mounting cavity 8 of the output portion 71, the parts inside the valve structure are assembled compactly, thereby effectively improving the space utilization rate inside the valve structure.

[0131] It can be understood that since the limiting member 73 can move in the mounting cavity 8, the valve core 1 connected with the limiting member 73 can move relative to the output portion 71.

[0132] In some embodiments of the present application, the driving assembly 7 further comprises a mounting seat 74 and a rotating member 75, the mounting seat 74 is fixedly arranged in the valve body 4, and the output portion 71 is screwed with the mounting seat 74; the rotating member 75 is rotationally arranged in the valve body 4 and is linked with the output portion 71; wherein the output portion 71 rotates with the rotating member 75 and can move in the first direction Y; that is, in this embodiment, by rotating the output portion 71, the output portion 71 can move in the first direction Y through the threaded guide between the output portion 71 and the mounting portion.

[0133] In an embodiment of the present application, the rotating member 75 is relatively fixed with the output portion 71, and the rotating member 75 can move in the first direction Y while rotating.

[0134] In another embodiment of the present application, the output portion 71 can rotate with the rotating member 75 and can move in the first direction Y relative to the rotating member 75.

[0135] In some embodiments of the present application, the limiting member 73 comprises a bearing, the inner ring of the bearing is fixed with the valve core 1, and the outer ring of the bearing is connected with the first elastic member 72; in this embodiment, the valve core 1 is connected with the bearing, and the performance of the valve core 1 is utilized, so that the valve core 1 does not rotate with the output portion 71 when moving in 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.

[0136] In some embodiments of the present application, the driving assembly 7 further comprises a connecting member 76, the connecting member 76 is fixedly connected with the limiting member 73; wherein the connecting member 76 abuts against the first elastic member 72, and at least part of the connecting member 76 is located inside the first elastic member 72. By connecting the first elastic member 72 with the connecting member 76, and by locating at least part of the connecting member 76 inside the first elastic member 72, the connecting member 76 limits the first elastic member 72, thereby avoiding the displacement of the first elastic member 72 at the position of the mounting cavity 8.

[0137] In some embodiments of the present application, the first elastic member 72 extends in the first direction Y and is arranged in the mounting cavity 8.

[0138] In some embodiments of the present application, the driving assembly 7 further comprises a second elastic member 77, which is arranged in the valve body 4 and abuts against the valve core 1, so as to be configured to drive the valve core 1 to move from the fourth position to the third position; in this embodiment, by the action of the second elastic member 77, when the output portion 71 moves in the closing direction, the second elastic member 77 can simultaneously abut against the valve core 1 to move in the closing direction, thereby reducing the driving power consumption of the valve structure, and 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 avoiding the separation between the valve core 1 and the sealing member 412.

[0139] In addition, the second elastic member 77 is arranged to abut against the valve core 1 when the first elastic member 72 is subjected to an external force greater than its minimum compression amount and has a tendency to deform, so as to avoid relative movement between the valve core 1 and the output portion 71.

[0140] In some embodiments of the present application, the second elastic member 77 is in a compressed state when the valve core 1 is in the third position and the fourth position.

[0141] In some embodiments of the present application, the types of the first elastic member 72 and the second elastic member 77 are not limited; they can be elastic washers or springs, etc.

[0142] In some embodiments of the present application, the first elastic member 72 and the second elastic member 77 are both springs.

[0143] Please refer to Figures 10 to 11 , the valve structure comprises a valve seat assembly 41, a valve housing 42, a throttling portion 9 and a valve core 1, the valve seat assembly 41 has a valve port 6, the valve housing 42 is connected with the valve seat assembly 41 and has a valve cavity 5 communicating with the valve port 6, the throttling portion 9 is located in the valve cavity 5 and is fixed relative to the valve seat assembly 41, the valve core 1 is movably arranged 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, a second channel 11 is formed between the valve core 1 and the throttling portion 9, the valve cavity 5, the second channel 11, the first channel 10 and the valve port 6 are sequentially communicated; wherein, 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, in the movement stroke 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.

[0144] Wherein, when the valve core is in the first position and the second position, the valve structure is in an open state, the medium can flow from the inlet 22 of the valve structure into the valve cavity 5 and then flow out of the valve structure from the valve port 6 through the second channel 11 and the first channel 10.

[0145] In the opening process of the valve structure, the first channel 10 is formed between the valve core 1 and the valve seat assembly 41, and the 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 and then flow out from the first channel 10, the flow area of the second channel 11 can control the flow 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 that of the first channel 10. Compared with the flow of the valve structure in the related art which is directly controlled by the gap size between the valve core 1 and the valve seat 411, the valve structure in the embodiment of the present application can control the flow 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 the sudden change of the flow of the medium passing through the valve structure, and make the flow passing through the valve structure easy to be controlled, thereby ensuring the adjustment accuracy of the valve structure.

[0146] In some embodiments of the present application, the valve core 1 also has a third position, and the valve core 1 abuts against the valve seat assembly 41 to close the valve port 6 when the valve core is in the third position. In the movement stroke of the valve core 1 from the third position to the first position, the flow area of the second channel 11 is greater than that of the first channel 10. That is, in this embodiment, due to the influence of the assembly gap and the size of the internal structure of the valve structure when the valve structure is switched from the closed state to the open state, the flow area of the second channel 11 is greater than that of the first channel 10 when the opening of the valve core 1 is small, thereby making the second channel 11 unable to play a role in flow regulation. However, since the opening of the valve core 1 is small at this time, the phenomenon of flow sudden change does not occur.

[0147] It can be understood that after the valve core 1 moves from the third position to the first position, the flow of the valve structure can still be controlled when the valve core 1 moves from the first position to the second position, and the flow area of the second channel 11 when the valve core 1 moves from the first position to the second position is greater than that when the valve core 1 moves from the third position to the first position.

[0148] In some embodiments of the present application, the minimum distance between the throttling part 9 and the valve core 1 is L2 when the valve core 1 is in the third position. L2 satisfies: 0.01mm≤L2≤1mm. By setting L2 to satisfy this interval range, the throttling part 9 can play a throttling function, so that the valve structure plays a flow regulating role.

[0149] Since there is a gap between the valve core 1 and the valve shell 42, the valve core 1 may shake during work. If L2 is less than 0.01mm, the valve core 1 is easy to interfere with the throttling part 9 during movement, thereby causing the valve structure to fail or the internal parts of the valve structure to be damaged.

[0150] If L2 is greater than 1mm, due to the large distance between the throttling part 9 and the valve core 1, the flow area of the second channel 11 cannot be smaller than that of the first channel 10 during the opening process of the valve structure, which makes the valve structure not have the function of regulating flow.

[0151] The value 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, 0.49mm, 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, 1mm. The value of L2 is not limited to the listed values, and other values within the range are also applicable.

[0152] In some embodiments of the present application, the flow area of the second channel 11 gradually increases during the movement of the valve core 1 from the first position to the second position. That is, in this embodiment, when the valve core 1 gradually 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 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, so that the valve core 1 corresponds to different flow areas of the second channel 11 at different opening degrees, and the flow of the valve structure during the opening process is easy to control, ensuring the regulation accuracy of the valve structure.

[0153] In some embodiments of the present application, the valve core 1 moves in 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 in the valve structure increases, and when the valve core 1 moves towards the valve seat assembly 41 in the first direction Y, the medium flow in the valve structure gradually decreases.

[0154] In some embodiments of the present application, the throttling portion 9 has a first flow guide surface 91 facing the valve core 1, and the extension direction of the first flow guide surface 91 is inclined relative to the first direction Y. In this way, the spacing between the first flow guide surface 91 and the valve core 1 gradually increases in the first direction Y in the direction away from the valve seat assembly 41, and thus the flow area of the second passage 11 between the valve core 1 and the first flow guide surface 91 gradually increases when the valve core 1 moves from the first position to the second position. That is, the flow of the valve structure during the opening process is easy to control, so as to ensure the adjustment accuracy of the valve structure.

[0155] It can be understood that, since the first flow guide surface 91 is a flat surface, the flow area of the second passage 11 gradually changes when the valve core 1 switches between the first position and the second position, and does not suddenly change.

[0156] Please refer to Figure 7 , Figure 11 and Figure 12 In some embodiments of the present application, the cross section of the valve core 1 is circular, 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.

[0157] Wherein, in the case that the opening of the valve core 1 is H, the flow area of the first passage 10 is S3 = 2πL3×H.

[0158] In the closed state of the valve structure, that is, when the valve core 1 is in the third position, the maximum radial dimension of the valve core 1 at the sealing position with the valve seat assembly 41 is L4, the minimum radial dimension of the throttling portion 9 is L5, and the minimum distance between the throttling section and the valve core 1 is L6 = L5 - L4. The included angle between the first guide surface and the straight line in the radial direction of the valve core 1 is β.

[0159] Wherein, in the case that the opening of the valve core 1 is H, the minimum distance between the throttling portion 9 and the valve core 1 is L7 = L6sinβ + Hcosβ; and the flow area of the second passage 11 is:

[0160] S4 = πL7×(2×L4 + (L6 - L6cos2β + H×L7sin2β) / 2.

[0161] In the case that the opening of the valve core 1 is any value, S4 < S3 is satisfied, which makes the valve structure subject to the action of the flow regulating portion, thereby having the function of flow regulation, so that the flow of the valve structure is easy to control, so as to ensure the adjustment accuracy of the valve structure.

[0162] Please refer to Figures 11 to 13In some embodiments of the present application, the valve structure further comprises a flow guide portion 12, which is located in the valve body 4 and connected to the throttling portion 9 away from the valve core 1; wherein the size of the flow guide portion 12 in the first direction Y is greater than the size of the throttling portion 9 in the first direction Y; in this embodiment, since the flow guide portion 12 is connected to the throttling portion 9 away from the valve core 1, the distance between the flow guide portion 12 and the valve core 1 in the second direction X will be greater than or equal to the distance between the throttling portion 9 and the valve core 1 in the second direction X; when the valve core 1 moves in the first direction Y and opposite to the throttling portion 9 in the second direction X, the valve structure has a small flow adjustment function; when the valve core 1 moves in the first direction Y and opposite to the flow guide portion 12 in the second direction X, since the gap between the valve core 1 and the flow guide portion 12 is large, the flow area between the valve core 1 and the flow guide portion 12 can allow a large amount of medium to pass through, thereby meeting the flow demand of the valve structure under large flow conditions.

[0163] In addition, the flow guide portion 12 can also play a role in adjusting the flow of the valve structure when the valve core 1 and the flow guide portion 12 are arranged opposite to each other in the second direction X.

[0164] In some embodiments of the present application, in the second direction X perpendicular to the first direction Y, the distance between the flow guide portion 12 and the valve core 1 is greater than the distance between the throttling portion 9 and the valve core 1; that is, in this embodiment, when the valve core 1 moves in the first direction Y and opposite to the flow guide portion 12 in the second direction X, the flow area between the valve core 1 and the flow guide portion 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 opposite to the flow guide portion 12 in the second direction X, it can meet the flow demand of the valve structure under large flow conditions.

[0165] In some embodiments of the present 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, and the extension direction of the second flow guide surface 121 is inclined relative to the first direction Y; in this way, when the valve core 1 moves in the first direction Y away from the valve seat assembly 41, the distance between the second flow guide surface 121 and the valve core 1 gradually increases, and the flow area between the second flow guide surface 121 and the valve core 1 gradually increases, thereby meeting the large flow demand of the valve structure under different working conditions.

[0166] It can be understood that since the second flow guide surface 121 is a flat surface, when the valve core 1 moves in the first direction Y away from the valve seat assembly 41, the flow area between the valve core 1 and the second flow guide surface 121 changes gradually and does not change abruptly.

[0167] In some embodiments of the present application, when the valve core 1 moves in the first direction Y away from the valve seat assembly 41 and 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 meeting the flow requirement of the valve structure in large flow conditions.

[0168] In some embodiments of the present application, the slope of the second flow guide surface 121 is smaller than the slope of the first flow guide surface 91; in this way, the change of the flow area of the second channel 11 is smaller than the change of the flow area between the second flow guide surface 121 and the valve core 1 based on the same distance of movement of the valve core 1 in the first direction Y, thereby enabling the flow guide 12 to meet the flow requirement of the valve structure in large flow conditions.

[0169] In some embodiments of the present application, the throttling portion 9, the flow guide 12 and the valve housing 42 are integrally formed to facilitate assembly of the valve structure.

[0170] In some embodiments of the present application, the throttling portion 9 is arranged around the valve core 1; in this way, it is ensured that the medium needs to flow through the second flow passage 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 to ensure the sealing performance between the valve core 1 and the valve seat assembly 41.

[0171] It should be noted that when the valve core is in the first position, the second position and the fourth position, the valve structure is in an open state.

[0172] Please refer to Figure 12 In some embodiments of the present application, the valve seat assembly 41 comprises a valve seat 411 and a sealing member 412, the valve seat 411 is connected with the valve body 4, and the valve port 6 is formed in the valve seat 411; the sealing member 412 is arranged on the valve seat 411; wherein, when the valve core 1 is in the third position, the valve core 1 abuts against the sealing member 412; that is, in this embodiment, the sealing performance of the valve structure is ensured by arranging the valve core 1 and the sealing member 412 to abut against each other.

[0173] In some embodiments of the present application, when the valve core 1 is in the third position, the valve core 1 and the sealing member 412 abut against each other in the first direction Y.

[0174] In some embodiments of the present application, at least part of the valve seat 411 is spaced apart from at least part of the throttling portion 9; wherein, the sealing member 412 is located between the valve seat 411 and the throttling portion 9; that is, in this embodiment, the sealing member 412 is fixed in the valve structure by cooperation between the throttling portion 9 and the valve seat 411 during assembly of the valve structure.

[0175] In some embodiments of the present application, the throttle portion 9 and the valve seat 411 are respectively located on two sides of the sealing member 412 in the first direction Y; the throttle portion 9 is located on one side of the valve core 1 in the second direction X, so as to avoid interference caused by the arrangement of the throttle portion 9 to the abutting fit of the valve core 1 and the sealing member 412.

[0176] In some embodiments of the present application, the outer side surface 16 of the sealing member 412 is also limited by the valve seat 411.

[0177] In some embodiments of the present application, the flow guide portion 12 is connected with the throttle portion 9 and also located on one side of the sealing member 412 in the first direction Y, so as to limit the sealing member 412 by the throttle portion 9.

[0178] In some embodiments of the present application, at least one clamping protrusion 13 is arranged on at least one of the valve seat 411 and the throttle portion 9; wherein the clamping protrusion 13 abuts against the sealing member 412; that is, in this embodiment, at least part of the clamping protrusion 13 is embedded into the sealing member 412, so as to avoid the sealing member 412 from being pulled out from between the throttle portion 9 and the valve seat 411.

[0179] In some embodiments of the present application, at least one clamping protrusion 13 is also arranged on the flow guide portion 12.

[0180] In some embodiments of the present application, the rotating member 75 is a rotor assembly, the rotor assembly is arranged in the valve cover 44, and a stator (not shown in the figure) is arranged outside the valve cover 44, the stator can generate a rotating magnetic field, the main body of the rotor assembly is arranged to be a magnetic material, and the rotor assembly is driven to rotate under the traction of the rotating magnetic field of the stator; the rotor assembly is fixedly connected with the output portion 71. When the rotor assembly rotates, the output portion 71 can be driven to rotate together.

[0181] In some embodiments of the present application, the valve structure comprises a stop assembly, the stop assembly is fixedly connected with the valve body 4, the rotor assembly is provided with a stop lever, the stop lever cooperates with the stop assembly, so as to limit the rotation number of the rotor assembly.

[0182] In some embodiments of the present application, the mounting seat 74 is provided with an internal thread, the output portion 71 is provided with an external thread, the output portion 71 is screwed on the mounting seat 74 and fixedly connected with the rotating member 75, so as to switch the rotating motion of the rotating member 75 into the linear motion of the output portion 71, that is, the output portion 71 can move in the first direction Y to drive the piston to move in the first direction Y, so as to switch the valve structure between the open state and the closed state.

[0183] In some embodiments of the present application, the valve shell 42 is connected with the valve cover 44 through the valve body 43, and a part of the valve core 1 is located in the valve body 43 and another part is located in the valve shell 42; wherein the valve shell 42, the valve body 43, the valve cover 44 and the valve seat 411 constitute the main shell part of the valve structure, and at the same time, the valve body 4 is divided into the valve shell 42, the valve body 43, the valve cover 44 and the valve seat 411, which is convenient for assembling the components in the valve structure.

[0184] In some embodiments of the present application, a sealing ring is further arranged between the sealing member 412 and the valve seat 411 to prevent leakage of the medium from the gap between the sealing member 412 and the valve seat 411.

[0185] In some embodiments of the present application, a connecting ring 21 is further fixedly sleeved on the valve body 43, and an outer thread is formed on the circumferential side of the connecting ring 21 to facilitate the connection of the valve structure with other components.

[0186] The present application also provides a vehicle comprising the valve structure as described above. Since the vehicle adopts all the technical solutions of the above-mentioned embodiments, it at least has the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be described here.

[0187] The vehicle can be a fuel automobile, a plug-in hybrid electric vehicle or a new energy vehicle, etc., which is not limited in the present application.

[0188] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0189] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0190] The embodiments, implementation manners and related technical features of the present application can be combined, replaced or modified without conflict.

[0191] The above is only the preferred embodiments of the present application, and does not limit the present application in any form. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the technical solution of the present application, still falls within the scope of the technical solution of the present application.

Claims

1. A valve structure, characterized by, The valve body comprises: a valve seat, the valve port being formed on the valve seat; a valve shell connected with the valve seat, the valve shell having a valve cavity, the valve cavity being communicated with the valve port, the valve core being movably arranged in the valve cavity; wherein at least part of the valve seat and at least part of the valve shell enclose the mounting groove, the groove opening of the mounting groove being opposite to the valve core in the moving direction of the valve core; the sealing member being located in the mounting groove, the groove wall of the mounting groove being in abutment with the bottom surface, the outer lateral surface and the inner lateral surface. The valve seat comprises:

2. The valve structure of claim 1, wherein a first sub-section, at least part of the first sub-section being located in the valve cavity and connected with the valve shell; and a second sub-section, the second sub-section being connected with the part of the first sub-section located in the valve cavity and being located in the valve cavity; wherein at least part of the second sub-section is spaced apart from the cavity wall of the valve cavity, the mounting groove being enclosed among the first sub-section, the second sub-section and the cavity wall of the valve cavity.

3. The valve structure of claim 1, wherein The valve body comprises: a valve seat, the valve port being formed on the valve seat; a valve shell connected with the valve seat and having a valve cavity; a throttling portion being located in the valve cavity and fixed opposite to the valve seat; 4. The valve structure of claim 1, wherein the valve core having a first position and a second position, when the valve core is in the first position and the second position, the valve core is separated from the sealing member to open the valve port, a first passage being formed between the valve core and the sealing member, a second passage being formed between the valve core and the throttling portion, the valve cavity, the second passage, the first passage and the valve port being communicated in sequence; wherein when the valve core is in the first position, the flow area of the first passage is equal to the flow area of the second passage, in the moving stroke of the valve core from the first position to the second position, the flow area of the second passage is smaller than the flow area of the first passage. ​ ​ ​ 5. The valve structure of claim 4, wherein ​ ​ ​ ​ 6. Valve structure according to any one of claims 1 to 5, characterized in that ​ ​ ​ ​ ​ ​ 7. The valve structure of claim 6, wherein The valve core further has a third position, and the valve core abuts against the sealing member to close the valve port when the valve core is in the third position; In a movement stroke 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.

8. The valve structure of claim 7, wherein When the valve core is in the third position, the minimum distance between the throttling portion and the valve core is L2; wherein the L2 satisfies: 0.01mm≤L2≤1mm.

9. The valve structure of claim 6, wherein In a movement stroke of the valve core from the first position to the second position, the flow area of the second channel gradually increases.

10. The valve structure of claim 9, wherein The valve core moves in a first direction; The throttling portion has a first flow guide surface, the first flow guide surface faces the valve core, and the extension direction of the first flow guide surface is inclined relative to the first direction.

11. The valve structure of claim 6, wherein At least part of the throttling portion abuts against the top surface of the sealing member.

12. Valve structure according to any of claims 1 to 5, characterized in that One of the valve body and the sealing member is provided with an anti-fool portion, and the other is provided with a avoiding slot matched with the shape of the anti-fool portion.

13. A vehicle characterized by comprising: The valve structure comprises the valve structure as claimed in any one of claims 1 to 12.

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