One-way valve and fluid control assembly

Abstract

The one-way valve comprises a guide part and a matching part, at least one of the guide part and the matching part is located on a valve body, at least the other of the guide part and the matching part is located on a valve element, and the guide part and the matching part can be in sliding fit in the axial direction of the valve body. The guiding device guides the action of opening and closing the valve port through the valve element, deflection of the valve element is reduced, incomplete closing of the valve port caused by deflection of the valve element is reduced, and leakage of the one-way valve is reduced. In addition, the valve body and the flow channel part are welded and fixed, and leakage of the fluid can be further reduced.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a one-way valve and a fluid control component. Background Art

[0002] In air conditioning systems, one-way valves are one of the commonly used components, installed in channels that allow one-way flow. The one-way valve is usually installed in an integrated module or a pipe in the flow path for fixation. In related technologies, the one-way valve is installed in the flow channel, and it is easy to deflect during the installation process, resulting in a gap between the valve core and the valve port wall or between the valve body and the flow channel wall after installation, resulting in leakage. How to reduce the leakage of the one-way valve is a technical problem that needs to be improved. Summary of the invention

[0003] The purpose of the present application is to provide a one-way valve and a fluid control assembly, which are helpful to reduce the leakage of the one-way valve.

[0004] To achieve the above-mentioned purpose, an embodiment of the present application adopts the following technical scheme: a one-way valve, comprising a valve body and a valve core component, the one-way valve having a valve cavity, at least a part of the valve core component being located in the valve cavity, the valve core component comprising a valve core, the one-way valve having a valve port, along the axial direction of the valve body, the valve core being able to move to open and close the valve port, the one-way valve comprising a guide portion and a matching portion, at least one of the guide portion and the matching portion being located in the valve body, at least the other of the guide portion and the matching portion being located in the valve core, along the axial direction of the valve body, the guide portion and the matching portion being able to slidably match; the valve body comprising a first welding portion, the first welding portion being able to be welded and fixed to the flow channel portion.

[0005] A fluid control component comprises a flow channel portion and the one-way valve, wherein the flow channel portion has an installation cavity, at least a portion of the one-way valve is located in the installation cavity, and the flow channel portion comprises a second welding portion, which can be welded and fixed to the first welding portion.

[0006] An embodiment of the present application discloses a one-way valve and a fluid control assembly, wherein the one-way valve comprises a guide portion and a mating portion, wherein at least one of the guide portion and the mating portion is located on the valve body, and at least the other of the guide portion and the mating portion is located on the valve core, and a first welding portion and a flow channel portion of the one-way valve are welded and fixed, and the guide portion and the mating portion can slide and fit along the axial direction of the valve body to guide the movement of the valve core to open and close the valve port, which can reduce the problem of incomplete closure of the valve port caused by the deflection of the valve core due to the welding of the one-way valve and the flow channel portion, and is beneficial to reducing leakage of the one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a three-dimensional structural schematic diagram of an implementation method of a one-way valve;

[0008] Figure 2 is a cross-sectional schematic diagram of an implementation of a one-way valve;

[0009] Figure 3 yes Figure 2 A partial enlarged schematic diagram of the welding state at A;

[0010] Figure 4 yes Figure 2 A partial enlarged schematic diagram of the unwelded state at B;

[0011] Figure 5 is a schematic cross-sectional view of one embodiment of a fluid control assembly;

[0012] Figure 6 It is a schematic diagram of an exploded structure of an implementation method of a one-way valve;

[0013] Figure 7 It is a three-dimensional structural schematic diagram of an implementation method of a valve core;

[0014] Figure 8 is a cross-sectional schematic diagram of another embodiment of a one-way valve;

[0015] Fig. 9 It is a schematic diagram of an exploded structure of another embodiment of a one-way valve;

[0016] Fig.10 is a three-dimensional structural schematic diagram of another embodiment of the valve body;

[0017] Fig.11 It is a three-dimensional structural schematic diagram of another embodiment of the valve core component;

[0018] Fig.12 is a cross-sectional schematic diagram of another embodiment of a one-way valve;

[0019] Fig.13 It is a schematic diagram of an exploded structure of another embodiment of a one-way valve;

[0020] Fig.14 is a three-dimensional structural schematic diagram of another embodiment of the valve body;

[0021] Fig.15 yes Figure 5 A partial enlarged schematic diagram of the unwelded state at C;

[0022] Fig.16 yes Figure 5 A partial enlarged schematic diagram of the welding state at position D;

[0023] Fig.17 is a schematic diagram of a three-dimensional structure of an implementation method of a fluid control component;

[0024] Fig.18 is a schematic cross-sectional view of one embodiment of a fluid control assembly;

[0025] Fig.19 is an exploded structural schematic diagram of one embodiment of a fluid control assembly;

[0026] Fig. 20 is a schematic diagram of a three-dimensional structure of another embodiment of a fluid control component;

[0027] Fig.21 is a cross-sectional schematic diagram of another embodiment of a fluid control assembly;

[0028] Fig. 22 It is a schematic diagram of an exploded structure of another embodiment of a fluid control assembly.

[0029] Component Symbols

[0030] 1. One-way valve; 10. Valve body; 10a. Outer wall; 101. First component; 1011. Third welding part; 1011a. Third welding wall; 102. Second component; 1021. Fourth welding part; 1021a. Fourth welding wall; 1022. Welding groove; 103. First welding part; 1031. Edge part; 1031a. First welding wall; 1031b. First mounting wall; 1031c. Second mounting wall; 104. Valve cavity; 104a. Cavity wall; 105. First opening; 105a. First wall; 105b. Second wall; 1051. First opening; 106. Second opening; 1061. Second opening; 20. Valve core component; 21. Valve core; 21a. Upper end wall; 21b. Peripheral wall; 22. Valve stem; 30. Elastic member; 40, valve port; 50, guide portion; 501, convex portion; 5011, guide groove; 60, matching portion; 601, first matching groove; 602, rod portion; 603, support portion; 7, fluid control component; 70, flow channel portion; 70a, upper wall; 701, mounting cavity; 702, second welding portion; 702a, second welding wall; 703, groove portion; 704, accommodating groove; 705, raised portion; 71, step portion; 711, step wall; 712, first matching portion; 7121, second matching groove; 7121a, first matching wall; 7121b, third matching wall; 72, first side wall; 721, second matching portion; 7211, third matching groove; 7211a, second matching wall; 7211b, fourth matching wall; 73, snap-in member. DETAILED DESCRIPTION

[0031] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0032] Reference Figure 1 and Figure 2A one-way valve 1 includes a valve body 10 and a valve core component 20. The one-way valve 1 has a valve cavity 104. At least part of the valve core component 20 is located in the valve cavity 104. The valve core component 20 includes a valve core 21. The one-way valve 1 has a valve port 40. Along the axial direction of the valve body 10, the valve core 21 can move to open and close the valve port 40. The valve body 10 includes a first welding portion 103, and the first welding portion 103 can be welded and fixed to the flow channel portion 70.

[0033] In some other embodiments, the valve body 10 may also be limited by the clamping member 73 and the flow channel portion 70 .

[0034] Reference Figure 2 and Figure 3 The valve body 10 includes an outer wall 10a. In the radial direction of the valve body 10, at least a portion of the first welding portion 103 protrudes relative to the outer wall 10a. On the one hand, the first welding portion 103 cooperates with the flow channel portion 70 to play a positioning role, which improves the convenience of installation. On the other hand, the first welding portion 103 protrudes relative to the outer wall 10a, which is conducive to improving the reliability of welding. The first welding portion 103 includes an edge portion 1031, a first welding wall 1031a and a first installation wall 1031b. At least a portion of the first installation wall 1031b is located at the edge portion 1031, and the first installation wall 1031b is located on the side of the edge portion 1031 that is relatively close to the flow channel portion 70. In the radial direction of the valve body 10, the edge portion 1031 is far away from the axis of the valve body 10 relative to the first welding wall 1031a. Similarly, in the radial direction of the valve body 10, the first installation wall 1031b is far away from the axis of the valve body 10 relative to the first welding wall 1031a.

[0035] Along the axial direction of the valve body 10, the first welding wall 1031a is close to / away from the valve port 40 relative to the first mounting wall 1031b, that is, along this direction, the first welding wall 1031a is protruding or recessed relative to the first mounting wall 1031b, and the flow channel portion 70 can cooperate with at least the first welding wall 1031a of the first welding portion 103. In some embodiments, when the first welding wall 1031a is protruding relative to the first mounting wall 1031b, the flow channel portion 70 may have a groove that cooperates with the protrusion, and at least part of the protrusion is located in the groove; or, when the first welding wall 1031a is recessed relative to the first mounting wall 1031b, the flow channel portion 70 may have a protrusion that cooperates with the recess; or, part of the first welding wall 1031a is protruding relative to the first mounting wall 1031b, and part of the first welding wall 1031a is recessed relative to the first mounting wall 1031b.

[0036] It should be noted that the cooperation here does not refer to the cooperation in terms of dimensional width, but refers to abutment or contact or other cooperation methods. Regardless of whether the first welding wall 1031a is convex or concave relative to the first mounting wall 1031b, at least part of the protrusion is located in the cavity formed by the concave.

[0037] The first welding portion 103 includes a plastic material. In order to improve the fixing strength of the one-way valve 1, the first welding portion 103 and the flow channel portion 70 are made of the same or similar material. Here, similar means at least having the same or similar physical properties. In this embodiment, the material of the first welding portion 103 is a thermoplastic material, which can be PP, PA66, PPS, PPA, POM, POK, PEEK, PEI, PESU, PPE, SPS, etc. In other embodiments, the first welding portion 103 can also be other materials that can be used for welding.

[0038] Reference Figure 1-Figure 5 , the first welding portion 103 and the flow channel portion 70 are fixed by welding, and the welding method can be laser welding, infrared welding, ultrasonic welding, etc. In other embodiments, other welding methods can also be used. Taking laser welding as an example, the welding adopts laser transmission welding, and the welding process is of heat conduction type, that is, the laser radiates the surface of the workpiece, and the surface heat diffuses to the inside through heat conduction. By controlling the width, energy, peak power and other parameters of the laser pulse, the workpiece is partially melted to form a specific molten pool. Optionally, the first welding portion 103 and the flow channel portion 70 are laser welded. On the one hand, laser welding realizes non-contact heating and rapid cooling during the welding process, thereby reducing the risk of heat-affected zone and thermal deformation. On the other hand, laser welding does not require additional filling materials, and can avoid the introduction of other chemicals or impurities, making the welding purer, which is conducive to improving the reliability of welding.

[0039] The first welding part 103 includes a light-transmitting material. The first welding part 103 is annular. Along the axial direction of the valve body 10, the first welding part 103 covers the connection part between the flow channel part 70 and the valve body 10. The first welding part 103 includes a light-transmitting material, and the connection part between the flow channel part 70 and the first welding part 103 includes a non-light-transmitting material. The first welding part 103 is transmissive to the laser, while the flow channel part 70 absorbs the laser. The first welding part 103 covers the part of the flow channel part 70 that needs to be welded, and the laser can pass through the first welding part 103 to the flow channel part 70. The plastic that absorbs the laser energy converts the light energy into heat energy and melts at the contact surface of the two materials. At the same time, the heat is also transferred to the surface of the plastic projected into the laser to form a melting zone. Under the action of the clamping force, the melting area produces intermolecular mixing. When the size of the melt reaches the specified requirements, the laser heat source is removed. Under the continued action of a certain pressure, a weld is formed after cooling, thereby realizing laser plastic welding. Usually, in order to improve the light transmission performance through the plastic, a material with high light transmittance is also added as needed.

[0040] It should be noted that the light-transmitting material here refers to the material through which the laser can pass, and the non-light-transmitting material refers to the material through which the laser cannot pass or has limited penetration ability.

[0041] Reference Figure 2-Figure 4 The valve body 10 includes a first component 101 and a second component 102, which are connected and fixed. In this embodiment, the first component 101 and the second component 102 are welded and fixed. Similarly, the welding method can be laser welding, infrared welding, ultrasonic welding, etc. The upper end of the second component 102 has an opening, and at least part of the first component 101 covers the opening. The wall forming the valve cavity 104 includes at least part of the lower end surface of the first component 101 and the inner wall of the second component 102. The first component 101 includes a third welding portion 1011, and the second component 102 includes a fourth welding portion 1021. Along the radial direction of the valve body 10, the third welding portion 1011 is close to the axis of the valve body 10 relative to the edge portion 1031, and the first welding portion 103 and the second welding portion 702 can be matched and welded and fixed. Along the radial direction of the valve body 10, the third welding portion 1011 is close to the axis of the valve body 10 relative to the first welding portion 103.

[0042] The third welding part 1011 includes a third welding wall 1011a, and the fourth welding part 1021 includes a fourth welding wall 1021a. At least a portion of the third welding wall 1011a can abut against the fourth welding wall 1021a and be fixed by welding. The valve body 10 includes a welding groove 1022, and the welding groove 1022 is located at the first welding part 103 and / or the second welding part 702. The wall of the welding groove 1022 can accommodate molten material, and a weld is formed at the junction of the two parts after the material cools. Specifically, this includes multiple embodiments:

[0043] When the welding groove 1022 is located in the first component 101, along the axial direction of the valve body 10, the third welding wall 1011a is away from the valve port 40 relative to the first mounting wall 1031b, that is, the welding groove 1022 is upwardly recessed relative to the first mounting wall 1031b, the second component 102 includes a second mounting wall 1031c, the fourth welding portion 1021 is upwardly protruding relative to the second mounting wall 1031c, and at least a portion of the fourth welding portion 1021 is located in the welding groove 1022;

[0044] When the welding groove 1022 is located in the second component 102, along the axial direction of the valve body 10, the fourth welding wall 1021a is close to the valve port 40 relative to the second installation wall 1031c, that is, the welding groove 1022 is recessed downward relative to the second installation wall 1031c, and the third welding portion 1011 is convex downward relative to the first installation wall 1031b, and at least a part of the third welding portion 1011 is located in the welding groove 1022;

[0045] When the welding groove 1022 is partially located in the first component 101 and partially located in the second component 102, it includes a structure in which the first two implementations coexist, which will not be described in detail here.

[0046] It should be noted that the directional terms such as upper and lower here are used to illustrate relative positions with reference to the directions shown in the accompanying drawings and do not limit the directions of the actual products.

[0047] The third welding part 1011 includes a light-transmitting material, and the fourth welding part 1021 includes a non-light-transmitting material. The third welding part 1011 is transmissive to the laser, and the fourth welding part 1021 absorbs the laser. The laser can penetrate the third welding part 1011 to the fourth welding part 1021. At least part of the fourth welding part 1021 is melted, and the welding groove 1022 is filled under the action of external pressure, and is combined and fixed with the third welding part 1011.

[0048] In this embodiment, the first component 101 and the second component 102 both include plastic material, the first component 101 is an integral structure, the second component 102 is an integral structure, and the first component 101 and the second component 102 are welded and fixed. In other embodiments, this form is included but not limited to. Therefore, the first component 101 can be made of a light-transmitting material, and the second component 102 can be made of an opaque material. On the one hand, it is suitable for the laser transmission welding process of this solution. On the other hand, the various parts of the first component 101 and the various parts of the second component 102 are made of the same material, and the bonding strength after welding is better, which is conducive to improving the welding quality.

[0049] The third welding part 1011 and the fourth welding part 1021 are both annular, and the melted fourth welding part 1021 is annular and combined with the third welding part 1011, so that the first component 101 can seal and cover the opening of the second component 102. In addition, because the welding area of ​​the third welding part 1011 and the fourth welding part 1021 has a certain width, the welding area generates molecular mixing during the welding melting process, so the welding area of ​​the third welding part 1011 and the fourth welding part 1021 has good sealing performance, can replace the sealing member, and is conducive to simplifying the structure and assembly process of the one-way valve 1.

[0050] Reference Figure 6-Figure 16The valve core component 20 includes a valve core 21 and a valve stem 22. The valve core 21 is located at at least one end of the valve stem 22, and at least a portion of the valve core 21 surrounds the valve stem 22. In this embodiment, the valve core 21 and the valve stem 22 include plastic material, and the valve core 21 and the valve stem 22 are an integral structure. The valve stem 22 is arranged in the first component 101 at one end away from the valve core 21, and along the axial direction of the valve body 10, the valve stem 22 can slide with the first component 101 to guide the movement of the valve core 21. The one-way valve 1 includes an elastic member 30, at least a portion of the elastic member 30 is sleeved on the valve stem 22, along the axial direction of the valve body 10, one end of the elastic member 30 abuts against the first component 101, and the other end of the elastic member 30 abuts against the valve core 21. Under the action of the elastic member 30, the valve core 21 can open and close the valve port 40. In this embodiment, the elastic member 30 includes a spring, and actual use includes but is not limited to the above structure.

[0051] The first welding portion 103 is located at the first component 101 and / or the second component 102 . The valve body 10 includes an outer side wall 10 a . Along the radial direction of the valve body 10 , the first welding portion 103 protrudes relative to the outer side wall 10 a . In one embodiment, the first welding portion 103 and the first component 101 are an integral structure, at least a portion of the outer side wall 10a is located in the second component 102, a surface perpendicular to the axial direction of the valve body 10 is defined as a reference surface, along the axial direction of the valve body 10, the projection of the second component 102 on the reference surface is located within the projection of the first component 101 on the reference surface, and the first welding portion 103 is used to be welded and fixed to the flow channel portion 70; in another embodiment, the first welding portion 103 and the second component 102 are an integral structure, at least a portion of the outer side wall 10a is located in the first component 101, along the axial direction of the valve body 10, the projection of the first component 101 on the reference surface is located within the projection of the second component 102 on the reference surface; in other embodiments, the first welding portion 103 may be partially located in the first component 101 and partially located in the second component 102, and the specific structure is not repeated here.

[0052] The valve body 10 includes a first opening portion 105 and a second opening portion 106. At least a portion of the first opening portion 105 is located at the side of the valve body 10. The first opening portion 105 has a first opening 1051. The first opening 1051 communicates with the valve cavity 104. Along the circumference of the valve body 10, there are two or more first openings 1051 arranged at intervals. In this embodiment, three first openings 1051 are arranged, and the first openings 1051 are evenly distributed along the circumference of the valve body 10. In other embodiments, the number and shape of the first openings 1051 can also be changed according to actual needs. At least a portion of the second opening portion 106 is located at the end of the valve body 10. At least a portion of the valve port 40 is located at the second opening portion 106. The second opening portion 106 has a second opening 1061. The one-way valve 1 includes a first state and a second state. In the first state, the valve core 21 closes the valve port 40, and the second opening 1061 is not communicated with the valve cavity 104. In the second state, the second opening 1061 communicates with the valve cavity 104. The second state here includes an open valve state.

[0053] The one-way valve 1 also includes a guide portion 50 and a matching portion 60. At least one of the guide portion 50 and the matching portion 60 is located in the valve body 10, and at least the other of the guide portion 50 and the matching portion 60 is located in the valve core 21. Along the axial direction of the valve body 10, the guide portion 50 and the matching portion 60 can slide and match, which is a guide for the action of the valve core 21 to open and close the valve port 40, which is conducive to reducing the deflection of the valve core 21. When the valve core 21 is in a deflected state, the valve port 40 is closed, and there may be a situation where the valve core 21 and the valve port 40 are not tightly fitted, resulting in part of the fluid being able to pass through the valve port 40 when the fluid enters the one-way valve 1 in the reverse direction, resulting in internal leakage. The guide portion 50 and the matching portion 60 are used to guide the action of the valve core 21, which is conducive to reducing the deflection of the valve core 21, thereby reducing the leakage of the one-way valve 1.

[0054] In one embodiment, referring to Figure 5-Figure 7 ,, the valve core 21 includes an outer peripheral wall 21b, which is the wall of the valve core 21 away from its axis side, the guide portion 50 includes at least a portion of the outer peripheral wall 21b, the wall forming the valve cavity 104 includes a cavity wall 104a, the matching portion 60 includes the cavity wall 104a, the outer peripheral wall 21b and the cavity wall 104a at least partially abut or have a gap, and along the axial direction of the valve body 10, the outer peripheral wall 21b and the cavity wall 104a can be slidably matched.

[0055] In another embodiment, referring to Figure 8-Figure 11The valve core 21 includes an outer peripheral wall 21b. Along the radial direction of the valve core 21, the guide portion 50 includes a convex portion 501. The wall forming the valve cavity 104 includes a cavity wall 104a. Along the radial direction of the valve body 10, at least a portion of the convex portion 501 protrudes relative to the outer peripheral wall 21b or protrudes relative to the cavity wall 104a. The matching portion 60 includes a first matching groove 601. The first matching groove 601 is concave relative to the cavity wall 104a or concave relative to the outer peripheral wall 21b. One of the convex portion 501 and the first matching groove 601 is located on the valve core 21, and the other of the convex portion 501 and the first matching groove 601 is located on the valve body 10. At least a portion of the first matching groove 601 extends along the axial direction of the valve body 10. At least a portion of the convex portion 501 is located in the first matching groove 601. Along the axial direction of the valve body 10, the convex portion 501 and the wall forming the first matching groove 601 can be slidably matched.

[0056] The accompanying drawings only show a structure in which the protrusion 501 is located at the valve core 21 and the first matching groove 601 is located at the valve body 10. In other embodiments, the protrusion 501 may be located at the valve body 10 and the first matching groove 601 may be located at the valve core 21; or the protrusion 501 may be located at both the valve core 21 and the valve body 10 and the first matching groove 601 may be located at both the valve core 21 and the valve body 10.

[0057] On the one hand, the guide portion 50 includes a protrusion 501, and the matching portion 60 includes a first matching groove 601. The protrusion 501 and the first matching groove 601 cooperate with each other, and can play a guiding role in the switching valve action relative to the valve core 21, which is beneficial to reduce the leakage caused by the deflection of the valve core 21, thereby reducing the leakage problem of the one-way valve 1; on the other hand, since at least part of the protrusion 501 is located in the first matching groove 601, the circumference of the valve core 21 is limited, which is beneficial to reduce the turbulence problem caused by the rotation of the valve core 21.

[0058] Furthermore, along the circumference of the valve body 10, at least parts of the guide portion 50 and the mating portion 60 are located between the two openings, the valve core 21 includes an upper end wall 21a, and the first opening portion 105 includes a first wall 105a and a second wall 105b. Along the axial direction of the valve body 10, the first wall 105a and the second wall 105b are arranged opposite to each other, and the first wall 105a is away from the valve port 40 relative to the second wall 105b; in the first state, at least part of the valve core component 20 abuts against the valve port 40. In the present embodiment, the valve core component 20 also includes a sealing member, and the valve core component 20 may abut against the valve port 40 via the sealing member, or may directly abut against the valve port 40 via the valve core 21. Along the axial direction of the valve body 10, the upper end wall 21a is flush with the first wall 105a or the upper end wall 21a is close to the valve port 40 relative to the first wall 105a. On the one hand, the protrusion 501 is located in the first matching groove 601, and the outer peripheral wall 21b of the valve core 21 does not need to slide with the cavity wall 104a. The outer peripheral wall 21b can have a gap with the cavity wall 104a. When the valve core 21 moves, even if the upper end wall 21a is flush with the first wall 105a or the upper end wall 21a is close to the valve port 40 relative to the first wall 105a, the valve core 21 will not contact the side wall of the first opening 1051, causing the valve core 21 to jam. On the other hand, the axial dimension of the valve core 21 can be reduced, which is beneficial to the miniaturization of the valve body 10.

[0059] In another embodiment, referring to Figure 12-14 The guide portion 50 includes a guide groove 5011, and the matching portion 60 includes a rod portion 602. The valve stem 22 is fixedly connected to the valve core 21 or is an integrated structure. One of the rod portion 602 and the guide groove 5011 is located on the valve stem 22, and the other of the rod portion 602 and the guide groove 5011 is located on the valve body 10. At least part of the rod portion 602 is located in the guide groove 5011. Along the axial direction of the valve body 10, the rod portion 602 can slide and cooperate with the guide groove 5011 to guide the movement of the valve core 21, which is beneficial to reduce the deflection of the valve core 21, thereby reducing the leakage of the one-way valve 1.

[0060] Furthermore, the matching portion 60 further includes a supporting portion 603, and the supporting portion 603 includes more than two supporting units, each supporting unit is spaced around the axis of the rod portion 602, one end of the supporting unit is connected to the rod portion 602, and the other end is connected to the wall of the second opening portion 106. A flow channel for fluid to pass through is formed between adjacent supporting units, and the flow channel is closer to the second opening 1061 relative to the valve port 40. In the second state, the flow channel can be connected to the valve cavity 104.

[0061] In this embodiment, the matching portion 60 and the second component 102 are an integral structure and can be integrally formed by injection molding or the like. The accompanying drawings only show a structure in which the rod portion 602 is located in the valve body 10 and the guide groove 5011 is located in the valve stem 22, which actually includes but is not limited to this structure.

[0062] In some other embodiments, when the installation method of the one-way valve 1 is a snap-fit, the one-way valve 1 includes a first fitting portion 712, and the valve body 10 includes a first side wall 72, the first side wall 72 is the outer side wall 10a of the first component 101 or the second component 102, and along the radial direction of the valve body 10, the first fitting portion 712 is raised or recessed relative to the first side wall 72, and is used for assembly and snap-fitting with the flow channel portion 70.

[0063] The working principle of the present invention is: when the fluid is introduced from the second opening 1061, a pressure difference is formed between the second opening 1061 and the valve cavity 104, the valve core 21 opens the valve port 40 under the action of the pressure difference, and the fluid is discharged from the first opening 1051; when the fluid is introduced from the first opening 1051, since the valve core 21 can only open the valve port 40 in one direction, the fluid cannot be discharged from the second opening 1061.

[0064] The assembly method of the one-way valve 1 includes: assembling the valve core component 20 and the second component 102 so that the guide part and the matching part can slide together; assembling the first component 101 and the second component 102, and welding the first welding part 103 and the flow channel part 70 with a welding device, and the welding area is melted and fixed during the welding process to complete the assembly of the one-way valve 1.

[0065] This solution also discloses a fluid control component 7, referring to Figure 5 , Fig.15 and Fig.16 , comprising a flow channel portion 70 and the one-way valve 1, the flow channel portion 70 having a mounting cavity 701, at least part of the one-way valve 1 being located in the mounting cavity 701. The flow channel portion 70 has a flow channel, at least part of the first opening 1051 of the one-way valve 1 is opposite to the flow channel, the fluid can enter the one-way valve 1 through the flow channel opposite to the second opening 1061, the valve core 21 opens the valve port 40 in one direction, and the fluid is discharged from the flow channel opposite to the first opening 1051.

[0066] The flow channel portion 70 includes a second welding portion 702, which can be welded and fixed to the first welding portion 103. Along the axial direction of the valve body 10, the first welding portion 103 covers the second welding portion 702. The first welding portion 103 includes a light-transmitting material, and the second welding portion 702 includes an opaque material. In this embodiment, the flow channel portion 70 can be a flow channel plate or other fluid devices.

[0067] The fluid control assembly 7 includes a groove 703 and a protrusion 705 , at least one of the groove 703 and the protrusion 705 is located at the first welding portion 103 , and at least the other of the groove 703 and the protrusion 705 is located at the second welding portion 702 . When the groove portion 703 is located at the first welding portion 103, the first welding wall 1031a is recessed relative to the first mounting wall 1031b, the wall of the groove portion 703 includes the first welding wall 1031a, the groove portion 703 has a receiving groove 704, the convex portion 501 is located at the second welding portion 702, the convex portion 501 is protruded relative to the upper wall 70a of the flow channel portion 70, and at least a portion of the convex portion 501 is located at the receiving groove 704; when the groove portion 703 is located at the second welding portion 702, the second welding wall 702a is recessed relative to the upper wall 70a of the flow channel portion 70, the wall of the groove portion 703 includes the second welding wall 702a, the convex portion 501 is located at the first welding portion 103, the convex portion 501 is protruded relative to the first mounting wall 1031b, and at least a portion of the convex portion 501 is located at the receiving groove 704.

[0068] The first welding portion 103 includes an edge portion 1031 and a first welding wall 1031a. Along the radial direction of the valve body 10, the edge portion 1031 is away from the axis of the valve body 10 relative to the first welding wall 1031a. The flow channel portion 70 includes an upper wall 70a, and the mounting cavity 701 is recessed relative to the upper wall 70a. When the groove portion 703 is located at the first welding portion 103, the groove portion 703 includes the first welding wall 1031a, and the edge portion 1031 protrudes toward one side of the flow channel portion 70 relative to the first welding wall 1031a; the second welding portion 702 includes a second welding wall 702a, and the second welding wall 702a can be welded and fixed to the first welding wall 1031a. When the groove portion 703 is located at the second welding portion 702, the groove portion 703 includes the second welding wall 702a, and the groove portion 703 is recessed relative to the upper wall 70a.

[0069] The laser can penetrate the first welding part 103 to the second welding part 702 of the flow channel part 70. The plastic on the surface of the second welding part 702 absorbs the laser energy and converts the light energy into heat energy, which melts at the contact surface of the two materials. At the same time, the heat is also transferred to the surface of the plastic projected into the laser, forming a melting zone. Under the action of the clamping force, the melting area produces molecular mixing, and under the continued action of a certain pressure, a weld is formed after cooling, realizing laser plastic welding.

[0070] It should be noted that when the one-way valve 1 and the flow channel portion 70 are not welded, the depth of the receiving groove 704 will be less than the height of the protrusion 705, the first installation wall 1031b and the upper surface wall of the flow channel portion 70 are not in contact, and the width of the receiving groove 704 is greater than the single-side width of the protrusion 705, where the width refers to the radial dimension of the protrusion 705 in the valve body 10. During the welding process, the side of the protrusion 705 close to the first welding wall 1031a is melted, and a force is applied to the valve body 10 or the flow channel portion 70, and the molten material is squeezed to gradually fill the side wall of the receiving groove 704. On the one hand, the weld coverage area is increased, which is conducive to improving the connection strength and sealing performance. On the other hand, this design has almost no excess material escaping into the valve cavity 104, which is conducive to reducing debris, thereby increasing the service life of the valve core 21.

[0071] The assembly method of the flow channel portion 70 and the one-way valve 1 includes: placing the assembled one-way valve 1 in the installation cavity 701; a welding device welds the first welding portion 103 of the one-way valve 1 and the second welding portion 702 of the fluid control component 7, and the welding area is melted and fixed during the welding process.

[0072] In some embodiments, reference Figure 17-Figure 22 The flow channel portion 70 and the one-way valve 1 may also be connected and fixed by a clamping member 73. In some other embodiments, the flow channel portion 70 and the one-way valve 1 may also be fixed by threads, bolts or other connection and fixing methods.

[0073] In this embodiment, refer to Figure 17-Figure 19 The flow channel portion 70 includes a step portion 71, the step portion 71 includes a step wall 711, and the wall forming the installation cavity 701 includes the step wall 711. Along the axial direction of the valve body 10, the step wall 711 is located on the side of the step portion 71 close to the opening of the installation cavity 701. At least part of the one-way valve 1 is the installation cavity 701, and the valve body 10 abuts against the step wall 711 to form a single-side axial limit.

[0074] The valve body 10 includes a first matching portion 712, which is concave relative to the first side wall 72, and has a second matching groove 7121. At least part of the clamping member 73 is located in the second matching groove 7121. The flow channel portion 70 includes a second matching portion 721, and the second matching portion 721 has a third matching groove 7211. The third matching groove 7211 has a third opening, and the third matching groove 7211 can communicate with the installation cavity 701 through the third opening. When the clamping member 73 is assembled, at least part of the clamping member 73 is located in the third opening. The first matching portion 712 includes a first matching wall 7121a. Along the axial direction of the valve body 10, the first matching wall 7121a is located on one side of the clamping member 73, and the first matching wall 7121a is close to the valve port 40 relative to the clamping member 73.

[0075] The second matching portion 721 includes a second matching wall 7211a, and along the axial direction of the valve body 10, the second matching wall 7211a is located on one side of the clamping member 73, and the first matching wall 7121a is relatively far from the valve port 40 relative to the clamping member 73, and can also be far from the bottom wall of the installation cavity 701. It should be noted that, defined along the axial direction of the valve body 10, the vertical distance between the first matching wall 7121a and the second matching wall 7211a is L1, and the axial width of the clamping member 73 is L2, L1 ≥ L2. The clamping member 73 abuts against or has a gap with the first matching wall 7121a and the second matching wall 7211a. When the clamping member 73 abuts against both, the one-way valve 1 and the flow channel portion 70 are relatively tightly assembled in the axial direction.

[0076] Along the axial direction of the valve body 10, the first matching wall 7121a and the second matching wall 7211a are located on opposite sides of the clamping member 73. When the one-way valve 1 is subjected to an upward force, the clamping member 73 presses against the second matching wall 7211a and the first matching wall 7121a to form an axial limit.

[0077] In some other embodiments, the valve body 10 may also include a third matching wall 7121b, the wall forming the first matching groove 601 includes the third matching wall 7121b, and along the axial direction of the valve body 10, the third matching wall 7121b and the first matching wall 7121a are relatively arranged; further, the flow channel portion 70 may also include a fourth matching wall 7211b, the wall forming the second matching groove 7121 includes the fourth matching wall 7211b, and along the axial direction of the valve body 10, the second matching wall 7211a and the fourth matching wall 7211b are relatively arranged.

[0078] The clamping member 73 has a fourth opening. Along the radial direction of the valve body 10, at least part of the one-way valve 1 and the flow channel portion 70 can pass through the fourth opening, so that at least part of the clamping member 73 is located in the first matching groove 601 and the second matching groove 7121. In this embodiment, the clamping member 73 can be a retaining ring or a retaining ring. Figure 20-22 When the clamping member 73 is a retaining ring, the first matching portion 712 includes the upper end surface of the valve body 10, and one side of the clamping member 73 abuts against or has a gap with the upper end surface of the valve body 10. In other embodiments, the clamping member 73 can also be other connecting components. It should be noted that the upper end surface here refers to the upper end surface of the valve body 10 portion that can be used for assembly.

[0079] The assembly method of the one-way valve 1 and the flow channel portion 70 includes: assembling the clamping member 73 and the flow channel portion 70, wherein at least part of the clamping member 73 is located at the first matching portion 712; the one-way valve 1 is installed from the opening side of the installation cavity 701, and the clamping member 73 enables the first matching portion 712 and the second matching portion 721 to be limitedly matched.

[0080] It should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although the present invention has been described in detail in this specification with reference to the above embodiments, it should be understood by those skilled in the art that the present invention can still be modified or replaced by equivalents, and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A one-way valve (1), characterized in that: The one-way valve (1) comprises a valve body (10) and a valve core component (20), wherein the one-way valve (1) has a valve cavity (104), at least a portion of the valve core component (20) is located in the valve cavity (104), the valve core component (20) comprises a valve core (21), the one-way valve (1) has a valve port (40), and along the axial direction of the valve body (10), the valve core (21) can move to open and close the valve port (40), the one-way valve (1) comprises a guide portion (50) and a matching portion (60), at least one of the guide portion (50) and the matching portion (60) is located on the valve body (10), and at least the other of the guide portion (50) and the matching portion (60) is located on the valve core (21), and along the axial direction of the valve body (10), the guide portion (50) and the matching portion (60) can be slidably matched; The valve body (10) comprises a first welding portion (103), and the first welding portion (103) is used to be welded and fixed to the flow channel portion (70).

2. The one-way valve (1) according to claim 1, characterized in that: The valve body (10) comprises an outer wall (10a); along the radial direction of the valve body (10), at least a portion of the first welding portion (103) protrudes relative to the outer wall (10a); the first welding portion (103) comprises a first welding wall (1031a) and a first mounting wall (1031b); along the radial direction of the valve body (10), the first mounting wall (1031b) is away from the axis of the valve body (10) relative to the first welding wall (1031a); the first welding wall (1031a) can be welded to the flow channel portion (70); along the axial direction of the valve body (10), the first welding wall (1031a) is protruding or recessed relative to the first mounting wall (1031b).

3. The one-way valve (1) according to claim 1 or 2, characterized in that: The valve core (21) includes an outer peripheral wall (21b), the guide portion (50) includes at least a portion of the outer peripheral wall (21b), the wall forming the valve cavity (104) includes a cavity wall (104a), the outer peripheral wall (21b) and at least a portion of the cavity wall (104a) are in abutment with each other or have a gap, and along the axial direction of the valve body (10), the outer peripheral wall (21b) and the cavity wall (104a) can be slidably matched.

4. The one-way valve (1) according to any one of claims 1 to 3, characterized in that: The valve core (21) includes an outer peripheral wall (21b); along the radial direction of the valve core (21), the guide portion (50) includes a convex portion (501); the wall forming the valve cavity (104) includes a cavity wall (104a); along the radial direction of the valve body (10), at least a portion of the convex portion (501) protrudes relative to the outer peripheral wall (21b) or protrudes relative to the cavity wall (104a); the matching portion (60) includes a first matching groove (601); when the matching portion (60) is located on the valve body (10), the first matching groove (601) is concave relative to the cavity wall (104a); The convex portion (501) protrudes relative to the outer peripheral wall (21b); when the matching portion (60) is located on the valve core (21), the first matching groove (601) is recessed relative to the outer peripheral wall (21b), and the convex portion (501) protrudes relative to the cavity wall (104a). At least part of the first matching groove (601) extends along the axial direction of the valve body (10), and at least part of the convex portion (501) is located in the first matching groove (601). Along the axial direction of the valve body (10), the convex portion (501) and the wall forming the first matching groove (601) can be slidably matched.

5. The one-way valve (1) according to claim 4, characterized in that: The valve core (21) comprises an upper end wall (21a), the valve body (10) comprises a first opening portion (105), at least a portion of the first opening portion (105) is located on a side wall of the valve body (10), the first opening portion (105) has a first opening (1051), the first opening (1051) is connected to the valve cavity (104), the first opening portion (105) comprises a first wall (105a) and a second wall (105b), along the axial direction of the valve body (10), the first wall (105a) and the second wall (105b) are arranged opposite to each other, and the first wall (105a) is farther away from the valve port (40) than the second wall (105b); The one-way valve (1) includes a first state, in which at least a portion of the valve core component (20) abuts against the valve port (40), and along the axial direction of the valve body (10), the upper end wall (21a) is flush with the first wall (105a) or the upper end wall (21a) is close to the valve port (40) relative to the first wall (105a).

6. The one-way valve (1) according to any one of claims 1 to 4, characterized in that: The guide portion (50) includes a guide groove (5011), the matching portion (60) includes a rod portion (602), and the valve core component (20) includes a valve stem (22). The valve stem (22) is connected and fixed to the valve core (21) or is an integral structure. One of the rod portion (602) and the guide groove (5011) is located on the valve stem (22), and the other of the rod portion (602) and the guide groove (5011) is located on the valve body (10). At least a portion of the rod portion (602) is located in the guide groove (5011), and along the axial direction of the valve body (10), the rod portion (602) can slide and cooperate with the guide groove (5011).

7. The one-way valve (1) according to any one of claims 3 to 6, characterized in that: The valve body (10) includes a first opening portion (105) and a second opening portion (106), wherein at least a portion of the first opening portion (105) is located on a side portion of the valve body (10), the first opening portion (105) has a first opening (1051), the first opening (1051) is connected to the valve cavity (104), and at least two of the first openings (1051) are arranged at intervals along the circumference of the valve body (10), at least a portion of the second opening portion (106) is located at an end portion of the valve body (10), at least a portion of the valve port (40) is located in the second opening portion (106), the second opening portion (106) has a second opening (1061), and the one-way valve (1) includes a second state, in which the second opening (1061) is connected to the valve cavity (104).

8. The one-way valve (1) according to claim 2, characterized in that: The valve body (10) comprises a first component (101) and a second component (102), wherein the first component (101) and the second component (102) are connected and fixed. The one-way valve (1) comprises an elastic component (30), wherein along the axial direction of the valve body (10), one end of the elastic component (30) abuts against the first component (101), and the other end of the elastic component (30) abuts against the valve core (21). Under the action of the elastic component (30), the valve core (21) can open and close the valve port (40), and the first welding portion (103) is located on the first component (101) and / or the second component (102).

9. A fluid control assembly (7), characterized in that: It comprises a flow channel portion (70) and the one-way valve (1) according to any one of claims 1 to 8, wherein the flow channel portion (70) has a mounting cavity (701), at least a portion of the one-way valve (1) is located in the mounting cavity (701), and the flow channel portion (70) comprises a second welding portion (702), and the second welding portion (702) is welded and fixed to the first welding portion (103).

10. The fluid control assembly (7) according to claim 9, characterized in that: The fluid control component (7) includes a groove portion (703), and at least a portion of the groove portion (703) is located at the first welding portion (103) and / or the second welding portion (702). When the groove portion (703) is located at the first welding portion (103), at least a portion of the second welding portion (702) is located at a receiving groove (704) of the groove portion (703); when the groove portion (703) is located at the second welding portion (702), at least a portion of the first welding portion (103) is located at the receiving groove (704) of the groove portion (703). Along the axial direction of the valve body (10), the first welding portion (103) covers the second welding portion (702), and the first welding portion (103) includes a light-transmitting material.

11. The fluid control assembly (7) according to claim 10, characterized in that: The first welding portion (103) comprises an edge portion (1031) and a first welding wall (1031a); along the radial direction of the valve body (10), the edge portion (1031) is away from the axis of the valve body (10) relative to the first welding wall (1031a); the flow channel portion (70) comprises an upper wall (70a); the mounting cavity (701) is recessed relative to the upper wall (70a); when the groove portion (703) is located at the first welding portion (103), the groove portion (703) comprises the first welding wall (1031a); 1a), the edge portion (1031) protrudes toward one side of the flow channel portion (70) relative to the first welding wall (1031a); the second welding portion (702) includes a second welding wall (702a), and the second welding wall (702a) can be welded and fixed to the first welding wall (1031a); when the groove portion (703) is located in the second welding portion (702), the groove portion (703) includes the second welding wall (702a), and the groove portion (703) is recessed relative to the upper wall (70a).

Images