Fluid control assembly and assembling method for fluid control assembly

Abstract

A fluid control assembly and an assembling method for a fluid control assembly. The fluid control assembly comprises a flow channel portion, a one-way valve, and a snap-fitting member; the flow channel portion is provided with a mounting cavity, and at least part of the one-way valve is located in the mounting cavity; the flow channel portion comprises an outer wall portion; the outer wall portion is located on the radial outer side of the mounting cavity; the flow channel portion comprises a first matching portion; at least part of the first matching portion is recessed towards the mounting cavity from the outer wall portion; the first matching portion is provided with a first matching groove, the first matching groove is provided with a first opening, the first matching groove can be communicated with the mounting cavity by means of the first opening, and at least part of the snap-fitting member is located in the first opening; and the snap-fitting member is snap-fitted and matched with at least part of the one-way valve. When the snap-fitting member is mounted, part of the snap-fitting member can be mounted into the first matching groove from the outer side of the flow channel portion, thereby simplifying the assembly of the fluid control assembly.

Description

Fluid control assembly and assembly method of fluid control assembly

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on September 18, 2023, with application number 202311206855.5 and invention name “A fluid control component and assembly method”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of valve technology, and in particular to a fluid control assembly and an assembly method of the fluid control assembly. Background Art

[0003] Check valves are a common component in air conditioning systems, installed in channels that allow one-way flow. These valves are typically attached to integrated modules or pipes within the flow path, forming a fluid control assembly. Simplifying the assembly steps of fluid control assemblies remains a technical challenge.

[0004] Summary of the Invention

[0005] The purpose of the present application is to provide a fluid control assembly and an assembly method of the fluid control assembly, which is conducive to simplifying the assembly steps of the fluid control assembly.

[0006] To achieve the above-mentioned purpose, a technical solution of the present application provides a fluid control component, including a flow channel portion, a one-way valve and a clamping member, the flow channel portion having an installation cavity, and at least a portion of the one-way valve is located in the installation cavity; the flow channel portion includes an outer wall portion, the flow channel portion includes a first matching portion, at least a portion of the first matching portion is recessed from the outer wall portion toward the installation cavity; the first matching portion has a first matching groove, the first matching groove has a first opening, the first matching groove can be connected to the installation cavity through the first opening, and at least a portion of the clamping member is located in the first opening; the clamping member is clamped and matched with at least a portion of the one-way valve.

[0007] In a fluid control assembly provided by one technical solution of the present application, at least a portion of the first mating portion is recessed from the outer wall portion into the mounting cavity; the first mating groove is connectable to the mounting cavity through a first opening; at least a portion of the clip is located in the first opening, and the clip engages with at least a portion of the one-way valve. This allows the clip to be installed by inserting a portion of the clip into the first mating groove from the outside of the flow channel portion, simplifying assembly of the fluid control assembly.

[0008] A technical solution of the present application also provides an assembly method for a fluid control component, which is the above-mentioned fluid control component. The assembly method of the fluid control component includes: assembling the clamping part and the flow channel part so that at least part of the clamping part is located in the first matching part of the flow channel part; and installing the one-way valve from the opening side of the mounting cavity of the flow channel part.

[0009] A technical solution of the present application provides a method for assembling a fluid control assembly, wherein at least a portion of a first mating portion is recessed from an outer wall portion into a mounting cavity; the first mating groove is capable of communicating with the mounting cavity through a first opening; at least a portion of a clip is located in the first opening, and the clip engages with at least a portion of a one-way valve. This allows the clip to be installed by inserting a portion of the clip into the first mating groove from the outside of the flow channel portion, thereby simplifying assembly of the fluid control assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] FIG1 is a schematic diagram of the three-dimensional structure of an embodiment of a one-way valve;

[0011] FIG2 is a cross-sectional schematic diagram of an embodiment of a one-way valve;

[0012] FIG3 is a partial enlarged schematic diagram of FIG2 in the welding state at position A;

[0013] FIG4 is a partial enlarged schematic diagram of FIG2 at B in an unwelded state;

[0014] FIG5 is a schematic cross-sectional view of an embodiment of a fluid control assembly;

[0015] FIG6 is a schematic diagram of an exploded structure of an embodiment of a one-way valve;

[0016] FIG7 is a schematic diagram of the three-dimensional structure of a valve core in one embodiment;

[0017] FIG8 is a cross-sectional schematic diagram of another embodiment of a one-way valve;

[0018] FIG9 is a schematic diagram of an exploded structure of another embodiment of a one-way valve;

[0019] FIG10 is a schematic perspective structural diagram of another embodiment of a valve body;

[0020] FIG11 is a schematic perspective structural diagram of another embodiment of a valve core component;

[0021] FIG12 is a cross-sectional schematic diagram of yet another embodiment of a one-way valve;

[0022] FIG13 is a schematic diagram of an exploded structure of another embodiment of a one-way valve;

[0023] FIG14 is a schematic perspective structural diagram of another embodiment of a valve body;

[0024] FIG15 is a partial enlarged schematic diagram of FIG5 in the unwelded state at position C;

[0025] FIG16 is a partial enlarged schematic diagram of FIG5 in the welding state at position D;

[0026] FIG17 is a schematic perspective view of a fluid control assembly according to an embodiment;

[0027] FIG18 is a schematic cross-sectional view of an embodiment of a fluid control assembly;

[0028] FIG19 is a schematic diagram of an exploded structure of an embodiment of a fluid control assembly;

[0029] FIG20 is a schematic cross-sectional view of the one-way valve in the fluid control assembly shown in FIG18;

[0030] FIG21 is a schematic perspective structural diagram of another embodiment of a fluid control assembly;

[0031] FIG22 is a cross-sectional schematic diagram of another embodiment of a fluid control assembly;

[0032] FIG. 23 is a schematic diagram of an exploded structure of another embodiment of a fluid control assembly.

[0033] 1. One-way valve; 10. Valve body; 101. First component; 1011. Third welding portion; 1011a. Third welding wall; 102. Second component; 1021. Fourth welding portion; 1021a. Fourth welding wall; 1022. Welding groove; 103. First welding portion; 1031. Edge portion; 1031a. First welding wall; 1031b. First mounting wall; 1031c. Second mounting wall; 104. Valve cavity; 104a. Cavity wall; 105. Third opening; 105a. First wall; 105b. Second wall; 1051. Third 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. Protrusion ;5011, guide groove;601, third matching groove;602, rod;603, support part;7, fluid control component;70, flow channel part;70a, upper wall;701, mounting cavity;702, second welding part;702a, second welding wall;703, groove part;704, accommodating groove;705, protrusion;71, step part;711, step wall;712, second matching part;7121, second matching groove;7121a, first matching wall;7121b, third matching wall;72, outer wall;721, first matching part;7211, first matching groove;7211a, second matching wall;7211b, fourth matching wall;73, snap-in part;731, cantilever part;732, straight section;733, limiting section;78, inclined section;79, outer wall;791, first opening. DETAILED DESCRIPTION

[0034] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0035] Herein, relational terms such as “first” and “second” are used merely to distinguish one component from another having the same name, but do not necessarily require or imply any actual relationship or order between these components.

[0036] 1 and 2 , a 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 a portion of which 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. The valve core 21 is operable to open and close the valve port 40 along the axial direction of the valve body 10. The valve body 10 includes a first welding portion 103, which can be welded to the flow channel portion 70.

[0037] In some other embodiments, the valve body 10 may also be limited by the clamping member 73 and the flow channel portion 70 .

[0038] Referring to Figures 2 and 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. This facilitates installation by cooperating with the flow channel portion 70 to provide a positioning function. Furthermore, the protrusion of the first welding portion 103 relative to the outer wall 10a improves welding reliability. The first welding portion 103 includes an edge portion 1031, a first welding wall 1031a, and a first mounting wall 1031b. At least a portion of the first mounting wall 1031b is located on the side of the edge portion 1031 that is closer to the flow channel portion 70. In the radial direction of the valve body 10, the edge portion 1031 is spaced apart 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 mounting wall 1031b is spaced apart from the axis of the valve body 10 relative to the first welding wall 1031a.

[0039] 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 convex or concave 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 convex 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 concave relative to the first mounting wall 1031b, the flow channel portion 70 may have a protrusion that cooperates with the concave; or, part of the first welding wall 1031a is convex relative to the first mounting wall 1031b, and part of the first welding wall 1031a is concave relative to the first mounting wall 1031b.

[0040] 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 convexity is located in the cavity formed by the concaveness.

[0041] The first welding portion 103 is made of plastic. To enhance the fixing strength of the one-way valve 1, the first welding portion 103 is made of the same or similar material as the flow channel portion 70. "Similar" here means having at least the same or similar physical properties. In this embodiment, the first welding portion 103 is made of a thermoplastic material, such as PP, PA66, PPS, PPA, POM, POK, PEEK, PEI, PESU, PPE, SPS, etc. In other embodiments, the first welding portion 103 may be made of other materials suitable for welding.

[0042] 1 to 5 , the first welding portion 103 and the runner portion 70 are fixed by welding, and the welding method may be laser welding, infrared welding, ultrasonic welding, etc. In other embodiments, other welding methods may also be used. Taking laser welding as an example, laser transmission welding is used for welding, and the welding process is of a heat conduction type, that is, the laser irradiates 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 locally melted to form a specific molten pool. Optionally, laser welding is used for the first welding portion 103 and the runner portion 70. 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 filler materials, which can avoid the introduction of other chemicals or impurities, making the welding purer and helping to improve the reliability of the welding.

[0043] The first weld 103 is made of a translucent material and is annular in shape. It extends axially along the valve body 10 and covers the connection between the flow channel 70 and the valve body 10. The first weld 103 is made of a translucent material, while the connection between the flow channel 70 and the first weld 103 is made of a non-translucent material. The first weld 103 is translucent to the laser beam, while the flow channel 70 absorbs the laser beam. The first weld 103 covers the portion of the flow channel 70 to be welded, allowing the laser beam to pass through the first weld 103 and reach the flow channel 70. The plastic, absorbing the laser energy, converts the light energy into heat, melting at the interface between the two materials. Simultaneously, the heat is transferred to the surface of the plastic exposed to the laser beam, forming a melt zone. Under the clamping force, molecular mixing occurs in the melt zone. When the melt reaches the specified size, the laser heat source is removed. Under continued pressure, the plastic cools and forms a weld, achieving laser plastic welding. Typically, to improve the light transmission through the plastic, highly translucent materials are added as needed.

[0044] It should be noted that the light-transmitting material here refers to a material through which the laser can pass, and the non-light-transmitting material refers to a material through which the laser cannot pass or has limited penetration ability.

[0045] Referring to Figures 2-4 , 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 together. The welding method can be laser welding, infrared welding, ultrasonic welding, or the like. The upper end of the second component 102 has an opening, and at least a portion of the first component 101 covers the opening. The wall forming the valve cavity 104 includes at least a portion 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 weld portion 1011, and the second component 102 includes a fourth weld portion 1021. In the radial direction of the valve body 10, the third weld portion 1011 is closer to the axis of the valve body 10 than the edge portion 1031. The first weld portion 103 and the second weld portion 702 are capable of mating and being welded together. In the radial direction of the valve body 10, the third weld portion 1011 is closer to the axis of the valve body 10 than the first weld portion 103.

[0046] The third welding portion 1011 includes a third welding wall 1011a, and the fourth welding portion 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 welded securely. The valve body 10 includes a welding groove 1022 located on the first welding portion 103 and / or the second welding portion 702. The wall of the welding groove 1022 can accommodate molten material. After the material cools, a weld is formed at the junction of the two components. Specifically, various embodiments are included:

[0047] 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, and the fourth welding portion 1021 is upwardly protruding relative to the second mounting wall 1031c. At least a portion of the fourth welding portion 1021 is located in the welding groove 1022.

[0048] 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 mounting wall 1031c, that is, the welding groove 1022 is recessed downward relative to the second mounting wall 1031c, and the third welding portion 1011 is convex downward relative to the first mounting wall 1031b. At least a portion of the third welding portion 1011 is located in the welding groove 1022.

[0049] 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.

[0050] 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.

[0051] The third welding part 1011 includes a translucent material, and the fourth welding part 1021 includes a non-translucent material. The third welding part 1011 is translucent relative to the laser, and the fourth welding part 1021 absorbs the laser. The laser can pass through the third welding part 1011 to the fourth welding part 1021. At least part of the fourth welding part 1021 is melted, and under the action of external pressure, the welding groove 1022 is filled and fixed to the third welding part 1011.

[0052] In this embodiment, both the first component 101 and the second component 102 are made of plastic. The first component 101 and the second component 102 are integrally formed, and the first component 101 and the second component 102 are welded together. Other embodiments include, but are not limited to, this method. Therefore, the first component 101 can be made of a light-transmitting material, while the second component 102 can be made of an opaque material. This, on the one hand, 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, which improves the bonding strength after welding and improves the welding quality.

[0053] The third weld 1011 and the fourth weld 1021 are both annular in shape. After melting, the fourth weld 1021 forms an annular shape and bonds with the third weld 1011, allowing the first component 101 to seal and cover the opening of the second component 102. Furthermore, because the weld area between the third weld 1011 and the fourth weld 1021 has a certain width, molecular mixing occurs in the weld area during the welding and melting process. Therefore, the weld area between the third weld 1011 and the fourth weld 1021 has good sealing performance and can replace sealing components, which helps simplify the structure and assembly process of the one-way valve 1.

[0054] Referring to Figures 6-16 , the 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 are made of plastic and form an integral structure. The valve stem 22 is inserted into the first component 101 at one end away from the valve core 21. 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 the first component 101, and the other end abuts 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 comprises a spring. Practical applications include, but are not limited to, the above-described structure.

[0055] The first welding portion 103 is located on the first component 101 and / or the second component 102 . The valve body 10 includes an outer sidewall 10 a . Along the radial direction of the valve body 10 , the first welding portion 103 protrudes relative to the outer sidewall 10 a . In one embodiment, the first welding portion 103 and the first component 101 are an integral structure, and at least a portion of the outer side wall 10a is located in the second component 102. The surface perpendicular to the axial direction of the valve body 10 is defined as the 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. 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, and 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. The specific structure will not be repeated here.

[0056] The valve body 10 includes a third opening 105 and a second opening 106. At least a portion of the third opening 105 is located on a side of the valve body 10. The third opening 105 has a third opening 1051 that communicates with the valve cavity 104. Two or more third openings 1051 are spaced apart along the circumference of the valve body 10. In this embodiment, three third openings 1051 are provided, evenly distributed along the circumference of the valve body 10. In other embodiments, the number and shape of the third openings 1051 may vary depending on actual needs. At least a portion of the second opening 106 is located at an end of the valve body 10. At least a portion of the valve port 40 is located in the second opening 106. The second opening 106 has a second opening 1061. The one-way valve 1 has a first state and a second state. In the first state, the valve core 21 closes the valve port 40, disconnecting the second opening 1061 from the valve cavity 104. In the second state, the second opening 1061 communicates with the valve cavity 104. The second state includes an open state.

[0057] The one-way valve 1 also includes a guide portion 50 and a mating portion 60. At least one of the guide portion 50 and the mating portion 60 is located on the valve body 10, and at least the other of the guide portion 50 and the mating portion 60 is located on the valve core 21. Along the axial direction of the valve body 10, the guide portion 50 and the mating portion 60 can slide and mate, guiding the movement of the valve core 21 to open and close the valve port 40, thereby reducing the deflection of the valve core 21. When the valve core 21 is deflected and the valve port 40 is closed, the valve core 21 and the valve port 40 may not fit tightly together, resulting in some fluid being able to pass through the valve port 40 when the fluid enters the one-way valve 1 in the reverse direction, causing internal leakage. The guide portion 50 and the mating portion 60 guide the movement of the valve core 21, thereby reducing the deflection of the valve core 21 and thus reducing the leakage of the one-way valve 1.

[0058] In one embodiment, referring to Figures 5-7, the valve core 21 includes an outer peripheral wall 21b, which is the wall of the valve core 21 away from its axis. The guide portion 50 includes at least a portion of the outer peripheral wall 21b, the wall forming the valve cavity 104 includes the cavity wall 104a, and the mating portion 60 includes the cavity wall 104a. The outer peripheral wall 21b and the cavity wall 104a are at least partially in contact with each other or have a gap. Along the axial direction of the valve body 10, the outer peripheral wall 21b and the cavity wall 104a can slide together.

[0059] In another embodiment, referring to Figures 8 to 11, the valve core 21 includes an outer peripheral wall 21b, and along the radial direction of the valve core 21, the guide portion 50 includes a protrusion 501, and 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 protrusion 501 protrudes relative to the outer peripheral wall 21b or protrudes relative to the cavity wall 104a, and the mating portion 60 includes a first mating groove 601, which is concave relative to the cavity wall 104a or concave relative to the outer peripheral wall 21b. One of the protrusion 501 and the first mating groove 601 is located on the valve core 21, and the other of the protrusion 501 and the first mating groove 601 is located on the valve body 10. At least a portion of the first mating groove 601 extends along the axial direction of the valve body 10, and at least a portion of the protrusion 501 is located in the first mating groove 601. Along the axial direction of the valve body 10, the protrusion 501 and the wall forming the first mating groove 601 can be slidably mated.

[0060] The accompanying drawings only show a structure in which the protrusion 501 is located at the valve core 21 and the third 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 third 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 third matching groove 601 may be located at both the valve core 21 and the valve body 10.

[0061] On the one hand, the guide portion 50 includes a protrusion 501, and the matching portion 60 includes a third matching groove 601. The protrusion 501 and the third matching groove 601 match 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 third 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.

[0062] Furthermore, along the circumference of the valve body 10, at least part of the guide portion 50 and the mating portion 60 is located between the two openings, the valve core 21 includes an upper end wall 21a, and the third 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 this embodiment, the valve core component 20 also includes a sealing member. The valve core component 20 can abut against the valve port 40 through the sealing member, or can directly abut against the valve port 40 through 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 third 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 third 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 conducive to the miniaturization of the valve body 10.

[0063] In another embodiment, referring to Figures 12-14, the guide portion 50 includes a guide groove 5011, the mating portion 60 includes a rod 602, the valve stem 22 is fixedly connected to the valve core 21 or is an integral structure, one of the rod 602 and the guide groove 5011 is located on the valve stem 22, and the other of the rod 602 and the guide groove 5011 is located on the valve body 10, and at least a portion of the rod 602 is located in the guide groove 5011. Along the axial direction of the valve body 10, the rod 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.

[0064] Furthermore, the mating portion 60 further includes a support portion 603, which includes two or more support units, each of which is spaced apart and surrounds the axis of the rod portion 602. One end of each support 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 support units. The flow channel is closer to the second opening 1061 than the valve port 40. In the second state, the flow channel can communicate with the valve cavity 104.

[0065] 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 other methods. The accompanying drawings only show the 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.

[0066] 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 third opening 1051; when the fluid is introduced from the third 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.

[0067] 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.

[0068] This solution also discloses a fluid control assembly 7, which, with reference to Figures 5, 15, and 16, includes a flow channel portion 70 and the aforementioned one-way valve 1. The flow channel portion 70 has a mounting cavity 701, and at least a portion of the one-way valve 1 is located in the mounting cavity 701. The flow channel portion 70 has a flow channel, and at least a portion of the third opening 1051 of the one-way valve 1 is opposite the flow channel. Fluid can enter the one-way valve 1 through the flow channel opposite the second opening 1061. The valve core 21 unidirectionally opens the valve port 40, and the fluid is discharged from the flow channel opposite the third opening 1051.

[0069] The flow channel portion 70 includes a second welded portion 702, which can be welded to the first welded portion 103. Along the axial direction of the valve body 10, the first welded portion 103 covers the second welded portion 702. The first welded portion 103 is made of a light-transmitting material, while the second welded portion 702 is made of an opaque material. In this embodiment, the flow channel portion 70 can be a flow channel plate or other fluid device.

[0070] 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 concave 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 protrusion 501 is located at the second welding portion 702, the protrusion 501 is protruded relative to the upper wall 70a of the flow channel portion 70, and at least a portion of the protrusion 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 concave 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 protrusion 501 is located at the first welding portion 103, the protrusion 501 is protruded relative to the first mounting wall 1031b, and at least a portion of the protrusion 501 is located at the receiving groove 704.

[0071] 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.

[0072] The laser can penetrate the first welding section 103 and reach the second welding section 702 of the runner section 70. The plastic on the surface of the second welding section 702 absorbs the laser energy and converts it into heat, melting at the interface between the two materials. Simultaneously, the heat is transferred to the surface of the plastic exposed to the laser, forming a molten zone. Under the action of the clamping force, the molten zone generates molecular mixing. Continued pressure causes the melt to cool, forming a weld, thus achieving laser plastic welding.

[0073] 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 is less than the height of the protrusion 705, the first mounting wall 1031b does not contact the upper surface wall of the flow channel portion 70, and the width of the receiving groove 704 is greater than the single-sided width of the protrusion 705. The width here refers to the radial dimension of the protrusion 705 in the valve body 10. During the welding process, the side of the protrusion 705 near the first welding wall 1031a is melted, exerting force on the valve body 10 or the flow channel portion 70. The molten material is squeezed until it gradually fills the sidewalls of the receiving groove 704. This increases the weld coverage area, improving the connection strength and sealing performance. Furthermore, this design prevents excess material from escaping into the valve cavity 104, reducing debris and thereby increasing the service life of the valve core 21.

[0074] 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.

[0075] In some embodiments, referring to Figures 17 to 23, the flow channel portion 70 and the one-way valve 1 can also be connected and fixed by a clamping member 73. In other embodiments, the flow channel portion 70 and the one-way valve 1 can also be fixed by threads, bolts or other connection and fixing methods.

[0076] 17-19 , the one-way valve 1 includes a second mating portion 712. The valve body 10 includes an outer wall 72. The second mating portion 712 is raised or recessed relative to the outer wall 72 in the radial direction of the valve body 10, and is configured to assemble and engage with the flow channel portion 70. The flow channel portion 70 includes a first mating portion 721. The first mating portion 721 has a first mating groove 7211. The first mating groove 7211 has a first opening 791. The first mating groove 7211 can communicate with the mounting cavity 701 through the first opening 791. When the clip 73 is assembled, at least a portion of the clip 73 is located in the first opening 791. The second mating portion 712 includes a first mating wall 7121a. The first mating wall 7121a is located on one side of the clip 73 in the axial direction of the valve body 10, and the first mating wall 7121a is closer to the valve port 40 than the clip 73.

[0077] 17-19 , the flow channel portion 70 includes a stepped portion 71, which includes a stepped wall 711. The wall forming the mounting cavity 701 includes the stepped wall 711. Along the axial direction of the valve body 10, the stepped wall 711 is located on the side of the stepped portion 71 closest to the opening of the mounting cavity 701. At least a portion of the one-way valve 1 constitutes the mounting cavity 701, and the valve body 10 abuts against the stepped wall 711, forming a single-sided axial limit.

[0078] 17 to 23 , the clip 73 is strip-shaped. The clip 73 and the flow channel portion 70 are separate structures. A gap is provided between the head and tail ends of the clip 73, or in other words, the head and tail ends of the clip 73 are not connected. This allows the clip 73 to have greater flexibility and thus be more easily expanded in the radial direction. Furthermore, when installing the clip 73, a portion of the clip 73 can be manually inserted into the first mating groove 7211 from the outside of the flow channel portion 70. Compared to the technical solution of first inserting the one-way valve 1 into the installation cavity 701 and then inserting the C-shaped retaining spring into the installation cavity 701 using a tool, no special tools are required, simplifying the assembly of the fluid control assembly 7. The clip 73 is made of steel. Specifically, the clip 73 can be formed by bending steel wire for ease of manufacture. Specifically, the clip 73 as a whole can be "U"-shaped or "C"-shaped.

[0079] Referring to Figures 17-23 , the clip 73 includes a cantilever portion 731, which includes a straight section 732 and a stopper section 733. A portion of the straight section 732 is located in the first mating groove 7211. The stopper section 733 is located radially outward of the outer wall portion 79 of the flow channel portion 70. Along the axial direction of the one-way valve 1, the axial dimension of the stopper section 733 is greater than the axial dimension of the first mating groove 7211. The stopper section 733 cooperates with the flow channel portion 70 to prevent the clip 73 from radially disengaging from the flow channel portion 70. Specifically, the clip 73 includes two cantilever portions 731. The flow channel portion 70 has at least two first mating grooves 7211, which extend circumferentially along the one-way valve 1. The straight sections 732 of the cantilever portions 731 extend substantially perpendicular to the axial direction of the one-way valve 1. Referring to Figures 17-20 , the flow channel portion 70 has four first openings 791. 21-23 , the flow channel portion 70 has two first openings 791 that are oppositely disposed, and the two straight sections 732 are substantially parallel, facilitating the transverse insertion of the clip 73 into the first mating groove 7211. The valve body 10 includes a second mating portion 712 that is recessed relative to the outer sidewall 72 and defines a second mating groove 7121. At least a portion of the clip 73 is positioned in the second mating groove 7121.

[0080] The first mating portion 721 includes a second mating wall 7211a. Along the axial direction of the valve body 10, the second mating wall 7211a is located on one side of the clip 73. The first mating wall 7121a is further away from the valve port 40 relative to the clip 73, and may also be further away from the bottom wall of the mounting cavity 701. It should be noted that, along the axial direction of the valve body 10, the vertical distance between the first mating wall 7121a and the second mating wall 7211a is defined as L1, and the axial width of the clip 73 is L2, where L1 ≥ L2. The clip 73 abuts against or has a gap with the first mating wall 7121a and the second mating wall 7211a. When the clip 73 abuts against both, the one-way valve 1 and the flow channel portion 70 are relatively tightly assembled axially.

[0081] Along the axial direction of the one-way valve 1, the clamping member 73 engages with the flow channel portion 70, and the clamping member 73 engages with at least a portion of the one-way valve 1. Along the axial direction of the valve body 10, the first mating wall 7121a and the second mating 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 abuts against the second mating wall 7211a and the first mating wall 7121a to form an axial limit.

[0082] In some other embodiments, the valve body 10 may also include a third mating wall 7121b, the wall forming the third mating groove 601 includes the third mating wall 7121b, and along the axial direction of the valve body 10, the third mating wall 7121b and the first mating wall 7121a are relatively arranged; further, the flow channel portion 70 may also include a fourth mating wall 7211b, the wall forming the second mating groove 7121 includes the fourth mating wall 7211b, and along the axial direction of the valve body 10, the second mating wall 7211a and the fourth mating wall 7211b are relatively arranged.

[0083] When the clamping member 73 is a retaining ring, the second mating 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 portion of the valve body 10 that can be used for assembly.

[0084] 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 so that at least a portion of the clamping member 73 is located in the first matching portion 721 of the flow channel portion 70; installing the one-way valve 1 from the opening side of the installation cavity 701 so that the clamping member 73 is clamped and matched with at least a portion of the one-way valve 1.

[0085] Before installing the one-way valve 1, the clamping member 73 can be pre-installed on the flow channel portion 70, and a part of the clamping member 73 is located in the first matching groove 7211. When installing the one-way valve 1, it is only necessary to insert the one-way valve 1 into the installation cavity 701. When the one-way valve 1 is inserted to a certain depth, the clamping member 73 is stretched. When the one-way valve 1 is inserted to a deeper depth, a part of the clamping member 73 rebounds and is stuck into the second matching groove 7121, so that the one-way valve 1 is installed in place. Since the clamping member 73 has been pre-installed, in the installation process of the one-way valve 1 mentioned above, it is only necessary to insert the one-way valve 1 into the installation cavity 701. Compared with the technical solution of first installing the one-way valve 1 into the installation cavity 701 and then installing the C-shaped retaining ring into the installation cavity 701, the technical solution of the present application can simplify the installation process of the one-way valve 1 and improve the installation efficiency. In addition, at least a portion of the first fitting portion 721 is recessed from the outer wall portion 79 toward the mounting cavity 701 , that is, the first fitting portion 721 has an opening in the outer wall portion 79 , so that when the one-way valve 1 is installed from the open side of the mounting cavity 701 of the flow channel portion 70 , the clamping member 73 has sufficient space to expand outward.

[0086] Referring to Figures 17-23 , the valve body 10 includes a beveled portion 78 located within the mounting cavity 701. The beveled portion 78 is located on the side of the second mating portion 712 away from the opening of the mounting cavity 701 and directly or indirectly abuts the outer periphery of the second mating portion 712. The radial dimension of the beveled portion 78 gradually decreases as it moves away from the opening of the mounting cavity 701. As the one-way valve 1 expands the clamping member 73, the beveled portion 78 can contact the clamping member 73, acting as a guide and reducing resistance to installation of the one-way valve 1. The beveled portion 78 may be tapered.

[0087] In other assembly methods of the fluid control assembly, the one-way valve 1 may be installed first from the opening side of the installation cavity 701 , and then the clamping member 73 may be installed.

[0088] 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 this specification has described the present invention in detail 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 fluid control assembly, characterized in that: It comprises a flow channel portion (70), a one-way valve (1) and a clamping member (73), wherein the flow channel portion (70) has a mounting cavity (701), and at least a portion of the one-way valve (1) is located in the mounting cavity (701); The flow channel portion (70) comprises an outer wall portion (79), and the flow channel portion (70) comprises a first matching portion (721), and at least a portion of the first matching portion (721) is recessed from the outer wall portion (79) toward the installation cavity (701); The first matching portion (721) has a first matching groove (7211), the first matching groove (7211) has a first opening (791), the first matching groove (7211) can be connected to the installation cavity (701) through the first opening (791), and at least a part of the clamping member (73) is located in the first opening (791); The clamping member (73) is clamped and matched with at least a portion of the one-way valve (1).

2. The fluid control assembly according to claim 1, characterized in that: The one-way valve (1) comprises a valve body (10), and the valve body (10) comprises a second matching portion (712); The second mating portion (712) includes a first mating wall (7121a), and the first mating portion (721) includes a second mating wall (7211a). Along the axial direction of the one-way valve (1), the first mating wall (7121a) is away from the bottom wall of the mounting cavity (701) relative to the clamping member (73), and the first mating wall (7121a) and the second mating wall (7211a) are located on opposite sides of the clamping member (73).

3. The fluid control assembly according to claim 2, characterized in that: The valve body (10) includes an outer wall (72), and the outer wall (72) is located at the outer periphery of the valve body (10). The outer wall (72) is opposite to the cavity wall of the installation cavity (701), and the second matching portion (712) is recessed relative to the outer wall (72). The second matching portion (712) has a second matching groove (7121), and at least a portion of the clamping member (73) is located in the second matching groove (7121).

4. The fluid control assembly according to any one of claims 1 to 3, characterized in that: The clamping piece (73) is strip-shaped, and gaps are provided at both ends of the clamping piece (73). The clamping piece (73) and the flow channel portion (70) are separate structures, and a portion of the clamping piece (73) is located radially outside the outer wall portion (79).

5. The fluid control assembly according to claim 4, characterized in that: The clamping member (73) includes a cantilever portion (731), and the cantilever portion (731) includes a straight section (732) and a limiting section (733), and a portion of the straight section (732) is located in the first matching groove (7211); the limiting section (733) is located radially outside the outer wall portion (79) of the flow channel portion (70), and along the axial direction of the one-way valve (1), the axial dimension of the limiting section (733) is greater than the axial dimension of the first matching groove (7211).

6. The fluid control assembly according to claim 5, characterized in that: The clamping member (73) includes two cantilever portions (731), and the flow channel portion (70) has at least two of the first matching grooves (7211), the first matching grooves (7211) extend along the circumference of the one-way valve (1), and the extension direction of the straight section (732) of the cantilever portion (731) is basically perpendicular to the axial direction of the one-way valve (1).

7. The fluid control assembly according to claim 2 or 3, characterized in that: The valve body (10) includes a sloped portion (78), and the sloped portion (78) is located in the installation cavity (701). The sloped portion (78) is away from the opening side of the installation cavity (701) relative to the second matching portion (712), and the sloped portion (78) is directly or indirectly adjacent to the outer periphery of the second matching portion (712); along the direction away from the opening side of the installation cavity (701), the radial dimension of the sloped portion (78) gradually decreases.

8. The fluid control assembly according to claim 2, characterized in that: The first matching portion (721) has a first matching groove (7211), and the wall forming the first matching groove (7211) includes a second matching wall (7211a), and the second matching portion (712) includes the upper end surface of the valve body (10), and along the axial direction of the one-way valve (1), one side of the clamping member (73) abuts against the upper end surface of the valve body (10) or has a gap, and one side of the clamping member (73) abuts against the second matching wall (7211a).

9. The fluid control assembly according to claim 2, characterized in that: It is defined that 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, and L1≥L2.

10. The fluid control assembly according to any one of claims 1 to 9, characterized in that: The flow channel portion (70) includes a step portion (71), and the step portion (71) includes a step wall (711). The wall forming the installation cavity (701) includes the step wall (711). Along the axial direction of the one-way valve (1), the step wall (711) faces the opening side of the installation cavity (701). Along the axial direction of the one-way valve (1), one side of the valve body (10) abuts against the step wall (711), and the other side of the valve body (10) abuts against the clamping member (73) or has a gap therebetween.

11. The fluid control assembly according to claim 10, characterized in that: The valve body (10) comprises a first component (101) and a second component (102), the upper end of the second component (102) having an opening, the first component (101) at least partially covering the opening, the first component (101) comprising a third welding portion (1011), the second component (102) comprising a fourth welding portion (1021), the third welding portion (1011) and the fourth welding portion (1021) being capable of matching and being fixed by welding.

12. The fluid control assembly according to claim 10, 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), wherein at least a portion of the valve core component (20) is located in the valve cavity (104), wherein the valve core component (20) comprises a valve core (21), wherein the one-way valve (1) has a valve port (40), wherein along the axial direction of the valve body (10), the valve core (21) is capable of moving to open and close the valve port (40), wherein the one-way valve (1) comprises a guide portion (50) and a matching portion (60), wherein at least one of the guide portion (50) and the matching portion (60) is located in the valve body (10), wherein at least the other of the guide portion (50) and the matching portion (60) is located in the valve core (21), wherein along the axial direction of the valve body (10), the guide portion (50) and the matching portion (60) are capable of slidingly matching.

13. A method for assembling a fluid control assembly, characterized in that: The fluid control component is a fluid control component according to any one of claims 1 to 12, and the assembly method of the fluid control component comprises: assembling the clamping member (73) and the flow channel portion (70) so that at least a portion of the clamping member (73) is located in the first matching portion (721) of the flow channel portion (70); and installing the one-way valve (1) from the opening side of the mounting cavity (701) of the flow channel portion (70).

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