One-way valve and fluid control assembly

Abstract

According to the one-way valve and the fluid control assembly, the matching part of the valve element is in sliding fit with the guiding part of the valve body, so that the guiding part can guide the action of the valve element, deflection of the valve element can be reduced, and leakage of the one-way valve is reduced; in addition, the wall part is fixedly connected with the mounting part, the guide part is in sliding fit with the matching part of the valve element, in the axial direction of the valve body, the wall part and the guide part both protrude towards one side of the valve port relative to the top wall of the first component and are concave inwards towards one side away from the valve port relative to the top wall relative to the guide part, and the guide part protruding towards one side of the valve port is close to the valve element. The length of the valve element can be shortened, the axial size of the valve body is reduced, and miniaturization is achieved; in addition, the matching part of the valve element is in sliding fit with the guiding part of the valve body, the guiding part can guide the action of the valve element, deflection of the valve element can be reduced, and therefore leakage of the one-way valve is 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, which are installed in channels that allow one-way flow. How to reduce the leakage of one-way valves is a technical problem 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 fluid control component, including a mounting portion and a one-way valve, the mounting portion having a mounting cavity, at least a portion of the one-way valve being located in the mounting cavity, the one-way valve comprising a valve body and a valve core component, the valve body having a valve cavity, at least a portion of the valve core component being located in the valve cavity, the valve core component comprising a valve core, the one-way valve comprising a valve mouth portion, along the axial direction of the valve body, the valve core can move to close the valve mouth of the valve mouth portion; the valve body comprises a wall portion, a guide portion and a top wall, the wall portion is connected and fixed to the mounting portion, the wall forming the valve cavity comprises a top wall, along the axial direction of the valve body, the wall portion and the guide portion protrude toward the valve mouth side relative to the top wall, the valve core comprises a mating portion, and the guide portion can slidably fit with the mating portion.

[0005] The present application also discloses a one-way valve, including a valve body and a valve core component, the valve body having a valve cavity, at least a portion of the valve core component being located in the valve cavity, the valve core component including a valve core, the one-way valve including a valve mouth portion, along the axial direction of the valve body, the valve core can move to close the valve mouth of the valve mouth portion; the valve body includes a wall portion, a guide portion and a top wall, the wall portion is connected and fixed to the mounting portion, the wall forming the valve cavity includes a top wall, along the axial direction of the valve body, the wall portion and the guide portion protrude toward the valve mouth side relative to the top wall, the valve core includes a mating portion, and the guide portion can slidably fit with the mating portion.

[0006] The embodiment of the present application discloses a fluid control assembly, through the sliding cooperation of the matching part of the valve core and the guide part of the valve body, the guide part can guide the movement of the valve core, which is conducive to reducing the deflection of the valve core, thereby reducing the leakage of the one-way valve; in addition, the wall part is connected and fixed to the mounting part, and the guide part and the matching part of the valve core are slidingly matched, along the axial direction of the valve body, the wall part and the guide part are both protruding toward the valve port side relative to the top wall of the first component, compared with the guide part being concave relative to the top wall away from the valve port side, the guide part protruding toward the valve port side is close to the valve core, which can shorten the length of the valve core and reduce the axial size of the valve body, which is conducive to miniaturization. The present application also discloses a one-way valve, the matching part of the valve core and the guide part of the valve body are slidingly matched, and the guide part can guide the movement of the valve core, which is conducive to reducing the deflection of the valve core, thereby reducing the leakage of the one-way valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 is a schematic diagram of the three-dimensional structure of the one-way valve in this embodiment;

[0008] Figure 2 is a schematic cross-sectional structural diagram of the one-way valve in a second state of this embodiment;

[0009] Figure 3 is a schematic diagram of the exploded structure of the one-way valve in this embodiment;

[0010] Figure 4 yes Figure 2 A local enlarged schematic diagram at point A;

[0011] Figure 5 is a schematic cross-sectional structural diagram of the first component in this embodiment;

[0012] Figure 6 is a schematic diagram of the cross-sectional structure of the valve core in this embodiment;

[0013] Figure 7 is a schematic cross-sectional structural diagram of the one-way valve in a first state of this embodiment;

[0014] Figure 8 is a schematic cross-sectional structural diagram of the fluid control assembly in this embodiment;

[0015] Fig. 9 yes Figure 8 A local enlarged schematic diagram at B;

[0016] Fig.10 Schematic diagram of the three-dimensional structure of the sealing part in this embodiment.

[0017] 1. One-way valve; 10. Valve body; 10a. Valve cavity; 101. First component; 1011. Wall; 1011a. First inner wall; 1011b. Connecting portion; 1012. Guide portion; 1012a. First wall; 1012b. Top wall; 1013. Transition portion; 102. Second component; 102a. Second inner wall; 1021. Groove portion; 1022. Matching portion; 1022a. Matching hole; 1022b. Second wall; 1023. Position limiting portion; 103. Protruding portion; 103a. Bottom wall; 20. First opening portion; 20a, first opening; 21, second opening; 21a, second opening; 22, first channel; 23, second channel; 30, valve core component; 31, valve core; 31a, third wall; 31b, shoulder; 32, elastic member; 33, sealing member; 34, balancing hole; 40, valve mouth; 40a, valve mouth; 50, fluid control component; 51, mounting portion; 51a, mounting cavity; 51b, fluid channel; 52, sealing portion; 52a, first abutting portion; 52b, second abutting portion; 53, first press-fit wall; 54, second press-fit wall. DETAILED DESCRIPTION

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

[0019] Reference Figure 1 and Figure 2 A one-way valve 1 includes a valve body 10 and a valve core component 30. The valve body 10 has a valve cavity 10a. At least part of the valve core component 30 is located in the valve cavity 10a. The valve core component 30 includes a valve core 31. The one-way valve 1 includes a valve mouth portion 40. Along the axial direction of the valve body 10, the valve core 31 can move to close the valve mouth 40a of the valve mouth portion 40.

[0020] The valve body 10 includes a first component 101 and a second component 102, and the first component 101 and the second component 102 are connected and fixed. The one-way valve 1 includes a groove portion 1021 and a limit portion 1023, one of which is located in the first component 101, and the other of which is located in the second component 102. Along the radial direction of the valve body 10, the groove portion 1021 is recessed relative to the outer side wall of the valve body 10. The first component 101 is an integral structure, and the first component 101 and the guide portion 1012 can be integrally formed by machining. In other embodiments, the first component 101 can also be formed in other ways. Furthermore, the groove portion 1021 is annular, and at least a portion of the limiting portion 1023 is located in the groove formed by the groove portion 1021. Along the radial direction of the valve body 10, at least a portion of the limiting portion 1023 and the groove portion 1021 are transitionally fitted or interference fit to improve the coaxiality of the first component 101 and the second component 102 during assembly.

[0021] Since the first component 101 and the second component 102 are transitionally fitted or interference fitted, the first component 101 and the second component 102 can be assembled by press-fitting. In order to improve reliability, the first component 101 and the second component 102 can be welded and fixed after being assembled. The first component 101 includes a metal material, and the second component 102 includes a metal material. The first component 101 and the second component 102 are made of the same material, which can improve the welding quality of the two. Optionally, the metal material can be one or a combination of aluminum alloy, stainless steel, copper, etc. In other embodiments, the first component 101 and the second component 102 include but are not limited to the above materials.

[0022] The valve body 10 includes a first opening portion 20 and a second opening portion 21. The one-way valve 1 has a fluid passage 51b. The first opening portion 20 is located on the side wall of the valve body 10. The first opening portion 20 has two or more first openings 20a. The first openings 20a are connected to the valve cavity 10a. The first openings 20a are arranged at intervals along the circumference of the valve body 10. The one-way valve 1 has a first passage 22 and a second passage 23. At least a portion of the first passage 22 is located on the side wall of the first component 101 and / or the second component 102. The first passage 22 is connected to the valve cavity 10a. The first opening 20a forms at least a portion of the first passage 22. The second opening portion 21 is located on at least one side end of the valve body 10. The second opening portion 21 has a second opening 21a. At least a portion of the second passage 23 is located on the second component 102. At least a portion of the second opening 21a is located on the second passage 23. The second passage 23 is connected to the valve cavity 10a. At least a portion of the valve port 40a is located on the second opening portion 21. The second opening 21a also forms at least a portion of the fluid passage 51b.

[0023] Reference Figure 2 and Figure 4 The valve body 10 includes a protrusion 103 and a bottom wall 103a. In this embodiment, the protrusion 103 and the bottom wall 103a are located in the second component 102. Along the axial direction of the valve body 10, the bottom wall 103a is located between the first opening 20 and the second opening 21. The wall forming the valve cavity 10a includes at least part of the bottom wall 103a. Along the axial direction of the valve body 10, the protrusion 103 protrudes toward the valve core 31 relative to the bottom wall 103a. The valve core component 30 includes a sealing member 33. Along the axial direction of the valve body 10, the sealing member 33 can abut against the protrusion 103. At least part of the valve port 40 is located on the protrusion 103. The protrusion 103 abuts against the sealing member 33 to form an end face seal, which is conducive to providing a stable sealing method. The protrusion 103 is formed on the second component 102, and the second component 102 can be formed by machining. Compared with the general sealing structure, the processing difficulty of the end face seal is lower.

[0024] Reference Figure 2 , Figure 5-Figure 7The first component 101 includes a wall portion 1011, a guide portion 1012 and a top wall 1012b. The wall portion 1011 includes a first inner wall 1011a. The wall forming the valve cavity 10a includes at least a portion of the first inner wall 1011a and at least a portion of the top wall 1012b. The first inner wall 1011a here also refers to the inner wall of the first component 101, and the top wall 1012b refers to the top wall 1012b forming the valve cavity 10a. Along the axial direction of the valve body 10, the wall portion 1011 and the guide portion 1012 protrude toward the valve port 40a side relative to the top wall 1012b. The valve core 31 includes a matching portion 1022, which is concave relative to the upper wall of the valve core 31, and has a matching hole 1022a. At least part of the guide portion 1012 is located in the matching hole 1022a. Along the axial direction of the valve body 10, the guide portion 1012 can be slidably matched with the matching portion 1022. The sliding match between the guide portion 1012 and the matching portion 1022 can guide the action of the valve core 31 to switch the valve, which is conducive to improving the stability of the action of the valve core 31, reducing the deviation of the valve core 31, and reducing the leakage caused by the deviation of the valve core 31.

[0025] In this embodiment, only the structure in which at least part of the limiting portion 1023 is located at the wall portion 1011 is shown. In other embodiments, this structure is included but not limited to. In addition, the wall portion 1011 refers to the portion extending from the top wall 1012b to the valve port 40a. In the radial direction of the valve body 10, the guide portion 1012 is close to the axis of the valve body 10 relative to the wall portion 1011. Around the axis of the valve body 10, the wall portion 1011 surrounds the guide portion 1012 in an annular shape to form a part of the first component 101.

[0026] The wall portion 1011 and the guide portion 1012 of the valve body 10 are an integral structure. The wall portion 1011 includes a connecting portion 1011b, which is connected and fixed to the mounting portion 51. The connecting portion 1011b may be a wall that is interference-fitted with the mounting portion 51, or may be a threaded portion that is threadedly connected to the mounting portion 51. In other embodiments, the mounting portion 51 may also be other structures that can be used to connect the mounting portion 51. The guide portion 1012 is slidably matched with the matching portion of the valve core 31. Along the axial direction of the valve body 1, the wall portion 1011 and the guide portion 1012 are both convex toward the valve port 40a side relative to the top wall 1012b of the first component 101. Compared with the guide portion 1012 being concave relative to the top wall 1012b away from the valve port 40a, the guide portion 1012 convex toward the valve port 40a side is close to the valve core 31, which can shorten the length of the valve core 31 and reduce the axial size of the valve body 10, which is conducive to miniaturization.

[0027] Furthermore, along the axial direction of the valve body 10, the guide portion 1012 and at least part of the connecting portion 1011b are located at the same height position. This is beneficial to reducing the axial dimension of the valve body 10, further miniaturizing the one-way valve 1 and the fluid control assembly 50. It should be noted that the height position here refers to the relative position of the guide portion 1012 and the wall portion 1011 with the axial direction of the valve body 1 as a reference, and the specific position is not limited here.

[0028] The valve core component 30 also includes an elastic member 32, and the elastic member 32 surrounds the guide portion 1012. The valve core 31 includes a shoulder 31b, and one end of the elastic member 32 abuts against the shoulder 31b of the valve core 31, and the other end of the elastic member 32 abuts against the top wall 1012b. The elastic member 32 and the valve mouth portion 40 are located on opposite sides of the valve core 31, and the elastic member 32 can provide a force for the action of the valve core 31 to assist in opening or closing the valve. In this embodiment, the elastic member 32 includes a spring, and the spring can be a compression spring. The compression spring can provide the valve core 31 with a force against the valve mouth portion 40, so that the valve core 31 can be pushed open by the fluid pressure entering from the second opening 21a to open the valve mouth 40a, and the fluid entering from the first opening 20a in the opposite direction cannot open the valve mouth 40a. In other embodiments, it can also be other elastic components.

[0029] The second component 102 includes a second inner wall 102a, and the wall forming the valve cavity 10a includes at least a portion of the second inner wall 102a. The one-way valve 1 includes a second state. In the second state, the valve core 31 is matched with the guide portion 1012, that is, at least a portion of the guide portion 1012 is still located at the matching portion 1022, and the sealing member 33 of the valve core component 30 is in contact with the valve port portion 40. In the radial direction of the valve body 10, the valve core 31 and the second inner wall 102a have a first gap. In the radial direction of the valve body 10, the guide portion 1012 is close to the axis of the first component 101 relative to the matching portion 1022, and it is defined that in the radial direction of the valve core 31, there is a second gap between the guide portion 1012 and the matching portion 1022, and the single-side width of the first gap is greater than the single-side width of the second gap.

[0030] The side of the valve core 31 does not contact the second inner wall 102a, that is, during the operation of the valve core 31 to open and close the valve port 40a, the valve core 31 and the second inner wall 102a will not contact each other. The valve core 31 is guided by the sliding fit of the guide portion 1012 and the fitting portion 1022. The contact area between the two is relatively small, and the contact surface is on the inner side of the valve core 31, which is conducive to reducing the noise during the valve switching process. In addition, within the range of motion of the one-way valve 1, the unilateral width of the first gap is greater than the unilateral width of the second gap. During the operation of the valve core 31, even if it shakes and deflects, it will not contact the inner wall of the valve body 10, which is conducive to reducing noise. It should be noted that the unilateral width of the first gap here is greater than the unilateral width of the second gap, which includes all states in the operation stroke of the valve core 31.

[0031] The guide portion 1012 includes a first wall 1012a, and the first wall 1012a is away from the top wall 1012b relative to the side wall of the guide portion 1012. The matching portion 1022 includes a second wall 1022b, and the first wall 1012a and the second wall 1022b are arranged opposite to each other along the axial direction of the valve body 10. The valve core 31 includes a third wall 31a, and at least a part of the third wall 31a is arranged opposite to the top wall 1012b along the axial direction of the valve body 10, that is, the upper end wall of the valve core 31, and the third wall 31a and the valve port 40 are located on opposite sides of the valve core 31. The one-way valve 1 includes a first state, and in the first state, the first wall 1012a and the second wall 1022b are abutted, and there is a gap between the third wall 31a and the top wall 1012b. When the pressure difference between the inlet side and the valve chamber 10a of the fluid is high, the force of the fluid on the valve core 31 increases, and the single-side wall thickness of the valve core 31 is smaller than the wall thickness of the guide portion 1012. When the valve core 31 opens the valve port 40a, if the third wall 31a contacts the first component 101 before the second wall 1022b, the side wall of the valve core 31 collides with the first component 101, which may cause its deformation. The deformation of the valve core 31 may easily cause problems such as the movement of the valve core 31 being stuck and the noise being increased. Therefore, the second wall 1022b of the valve core 31 contacts the first wall 1012a of the guide portion 1012, and there is a gap between the third wall 31a and the top wall 1012b. The thickness of the second wall 1022b is greater than the thickness of the third wall 31a, and the strength is greater. Therefore, the probability of deformation of the valve core 31 can be reduced, and the reliability of the one-way valve 1 can be improved.

[0032] The guide portion 1012 includes a transition portion 1013. The first wall 1012a is away from the top wall 1012b relative to the side wall of the guide portion 1012. The transition portion 1013 connects the side wall and the first wall 1012a. Along the axial direction of the valve body 10, the diameter of the transition portion 1013 decreases from the side wall to the first wall 1012a. In this embodiment, the transition portion 1013 can be chamfered or rounded. The matching portion 1022 has a matching hole 1022a. The guide portion 1012 can be slidably matched with the wall forming the matching hole 1022a. When assembling the one-way valve 1, the part of the guide portion 1012 that needs to be inserted into the matching hole 1022a, and the end of the guide portion 1012 enters first. Along the axial direction of the valve body 10, the size of the transition portion 1013 decreases from the side wall to the first wall 1012a.

[0033] On the one hand, the small diameter end of the transition part 1013 first enters the matching hole 1022a during the assembly process, which can facilitate assembly and improve assembly efficiency; on the other hand, the guide part 1012 and the matching part 1022 are slidably matched, and debris may exist during the operation of the two, which is easy to cause jamming. The transition part 1013 is set at the end of the guide part 1012. During the operation of the guide part 1012 and the matching part 1022, the debris will be pushed into the matching hole 1022a by the inclined surface formed by the transition part 1013 for storage. The design of the transition part 1013 reduces the jamming of the valve core 31.

[0034] In the second state, the one-way valve 1 is in a closed state, and a chamber is formed between a part of the wall of the matching part 1022 and a part of the wall of the guide part 1012. The fluid in the chamber can only be discharged through the gap between the guide part 1012 and the matching part 1022, resulting in the compression of the fluid in the chamber during the process of the valve core 31 opening the valve port 40a. After the valve core 31 moves to a certain position, the pressure in the chamber is greater than the pressure in the valve cavity 10a, so it is difficult for the valve core 31 to continue to open the valve port 40a. In order to enable the valve core 31 to smoothly open the valve port 40a, the one-way valve 1 has a balancing hole 34, which is located in the valve core 31 and / or the guide part 1012. The balancing hole 34 can connect the matching hole 1022a and the valve cavity 10a, so that the pressure in the cavity and the valve cavity 10a are consistent or tend to be consistent. This may include a variety of implementations:

[0035] When the balancing hole 34 is located at the valve core 31, one end of the balancing hole 34 has an opening at the outer wall of the valve core 31, and the other end of the balancing hole 34 has an opening at the side wall of the matching portion 1022. The opening of the balancing hole 34 at the matching portion 1022 is close to the second wall 1022b, which can reduce the pressure difference between the inside and outside of the cavity caused by the guide portion 1012 blocking the balancing hole 34 during the movement of the valve core 31.

[0036] When the balancing hole 34 is located in the guide portion 1012 , one end of the balancing hole 34 has an opening in the side wall of the guide portion 1012 , and the other end of the balancing hole 34 has an opening in the first wall 1012 a of the guide portion 1012 .

[0037] In other embodiments, the balancing hole 34 may also be located at both the valve core 31 and the guide portion 1012 , which may include but are not limited to the above structure.

[0038] The working principle of the one-way valve 1 is as follows: when the fluid is introduced from the second opening 21a, there is a pressure difference between the first opening 20a and the valve cavity 10a, and the fluid exerts pressure on the valve core 31, so that the valve core 31 opens the valve port 40a. The valve core 31 slides with the matching portion 1022 and the guide portion 1012 to guide the movement of the valve core 31, and the fluid is discharged from the first opening 20a through the valve cavity 10a; when the fluid is introduced from the first opening 20a, the direction of the force exerted by the fluid on the valve core 31 is consistent or nearly consistent with the valve closing direction of the valve core 31, and the valve core 31 cannot open the valve port 40a, thereby realizing reverse cutoff of the fluid.

[0039] The present invention also discloses a fluid control assembly 50, referring to Figure 3 , Figure 8 , Fig. 9 and Fig.10 , including a mounting portion 51 and the one-way valve 1, the mounting portion 51 has a mounting cavity 51a and a fluid channel 51b, at least part of the one-way valve 1 is located in the mounting cavity 51a, the first component 101 can be connected and fixed with the mounting portion 51, the one-way valve 1 has a first channel 22 and a second channel 23, at least part of the first opening 20a is located in the first channel 22, and at least part of the second opening 21a is located in the second channel 23. The wall portion 1011 of the first component 101 and the mounting portion 51 are threadedly connected and / or press-fitted, and the connection method of the wall portion 1011 and the mounting portion 51 can be threaded, press-fitted, or a combination of threading and press-fitting. In other embodiments, the above connection methods are included but not limited to.

[0040] At least part of the first channel 22 is located at the side of the first component 101 and / or the second component 102, wherein a part of the fluid channel 51b is communicated with the first channel 22, and at least part of the second channel 23 is located at the second component 102, and another part of the fluid channel 51b is communicated with the second channel 23. In this embodiment, the first channel 22 is located at the second component 102, the first component 101 is an integral structure, and the second component 102 is an integral structure. In other embodiments, the first channel 22 may also be located at the first component 101, or located at the first component 101 and the second component 102, which is not specifically limited here.

[0041] The fluid control assembly 50 further includes a sealing portion 52, a first press-fit wall 53 and a second press-fit wall 54. The first press-fit wall 53 is located in the first component 101. Along the radial direction of the valve body 10, the first press-fit wall 53 is away from the valve port 40a relative to the connecting portion 1011b of the wall portion 1011. The first press-fit wall 53, the top wall 1012b and the wall portion 1011 are an integral structure, and the connecting portion 1011b of the wall portion 1011 is connected and fixed to the mounting portion 51. When the first press-fit wall 53 and the wall portion 1011 are separate structures, since the sealing portion 52 is located between the first press-fit wall 53 and the second press-fit wall 54, the sealing portion 52 exerts a force on the first press-fit wall 53 of the valve body 10 away from 40a, and the wall portion 1011 is connected and fixed to the mounting portion 51, so that the force applied to the valve body 10 exerts two opposing forces on the separate structure, and the fluid is easily leaked from between the separate structures. Therefore, the first press-fit wall 53 and the wall portion 1011 are an integrated structure, which can reduce leakage.

[0042] In some embodiments, the connection portion 1011b may be a threaded portion, and the wall portion 1011 is threadedly connected to the mounting portion 51 through the threaded portion. The threads of the connection portion 1011b and the mounting portion 51 cooperate with each other, and the first component 101 can be limited in the axial direction, so that the sealing portion 52 cooperates more closely with the first press-fit wall 53 and the second press-fit wall 54. Compared with the first press-fit wall 53 and the wall portion 1011 being separate structures, the first press-fit wall 53 and the wall portion 1011 are an integrated structure, and there is no matching gap between the two, which is conducive to reducing leakage.

[0043] The wall forming the installation cavity 51a includes a second press-fit wall 54. Along the axial direction of the one-way valve 1, at least part of the sealing portion 52 is located between the first press-fit wall 53 and the second press-fit wall 54. The sealing portion 52 is away from the valve port 40a relative to the connecting portion 1011b. The sealing portion 52 is used to reduce the leakage of the fluid from the installation gap between the one-way valve 1 and the installation portion 51. The sealing portion 52 includes at least two first abutting portions 52a and at least two second abutting portions 52b. Along the axial direction of the valve body 10, the first abutting portion 52a and the second abutting portion 52b are located on opposite sides of the sealing portion 52. The first abutting portion 52a abuts against the first press-fit wall 53, and the second abutting portion 52b abuts against the second press-fit wall 54. One side of the sealing portion 52 abuts against the first press-fit wall 53 through a plurality of first abutting portions 52a, and the other side of the sealing portion 52 abuts against the second press-fit wall 54 through the second abutting portion 52b, forming a multi-point seal, which is conducive to reducing leakage. As shown in the figure, the seal can be Z-shaped or in other structures, and it only needs to achieve the effect of multi-point sealing, especially in the field of high-pressure fluid control such as CO2, with high sealing performance.

[0044] Along the axial direction of the valve body 10, the first channel 22 is far away from the sealing portion 52 relative to the connecting portion 1011b, and along the axial direction of the valve body 10, the second channel 23 is far away from the sealing portion 52 relative to the connecting portion 1011b. The connecting portion 1011b of the valve body 10 is fixed to the mounting portion 51, and the fluid leakage in the mounting cavity 51a needs to pass through the connecting portion between the connecting portion 1011b and the mounting portion 51, and then pass through the gap between the sealing portion 52 and the first press-fit wall 53 and / or the second press-fit wall 54. The connecting portion can play a role in partially reducing leakage. The first channel 22 and the second channel 23 are far away from the sealing portion 52 relative to the connecting portion 1011b, and the sealing portion 52 can further reduce the leakage of the fluid.

[0045] The sealing portion 52 includes a metal material, the mounting portion 51 includes a metal material, the first component 101 includes a metal material, and the first press-fit wall 53 of the first component 101 and the connecting portion 1011b of the first component 101 are an integral structure. The sealing portion 52 can be formed by machining. In the field of high-pressure fluid control, high-strength materials are selected to improve the sealing effect and extend the service life of the sealing portion 52.

[0046] The first component 101 of the one-way valve 1 and the mounting portion 51 are threadedly connected or press-fitted, and the sealing portion 52 is used to reduce leakage, which is conducive to the rapid assembly of the fluid control component 50. When the first component 101 and the mounting portion 51 are connected, the sealing portion 52 can be pressed tightly, which is conducive to reducing the leakage of the one-way valve 1. The drawings only show that the first press-fit wall 53 is located in the first component 101, and the actual structure includes but is not limited to this structure.

[0047] 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 fluid control assembly (50), characterized in that: The one-way valve (1) comprises a mounting portion (51) and a one-way valve (1), wherein the mounting portion (51) has a mounting cavity (51a), at least a portion of the one-way valve (1) is located in the mounting cavity (51a), the one-way valve (1) comprises a valve body (10) and a valve core component (30), the valve body (10) has a valve cavity (10a), at least a portion of the valve core component (30) is located in the valve cavity (10a), the valve core component (30) comprises a valve core (31), and the one-way valve (1) comprises a valve port portion (40), and along the axial direction of the valve body (10), the valve core (31) can move to close the valve port (40a) of the valve port portion (40); The valve body (10) includes a wall portion (1011), a guide portion (1012) and a top wall (1012b); the wall portion (1011) is fixed to the mounting portion (51); the wall forming the valve cavity (10a) includes a top wall (1012b); along the axial direction of the valve body (10), the wall portion (1011) and the guide portion (1012) protrude toward the valve port (40a) relative to the top wall (1012b); the valve core (31) includes a mating portion (1022); and the guide portion (1012) can slidably fit with the mating portion (1022).

2. The fluid control assembly (50) according to claim 1, characterized in that: The wall portion (1011) includes a connecting portion (1011b), and the connecting portion (1011b) is fixed to the mounting portion (51). Along the radial direction of the valve body (10), the connecting portion (1011b) is away from the axis of the guiding portion (1012) relative to the guiding portion (1012), and along the axial direction of the valve body (10), at least part of the guiding portion (1012) and the connecting portion (1011b) are located at the same height position.

3. The fluid control assembly (50) according to claim 2, characterized in that: The valve body comprises a first component (101) and a second component (102), the first component (101) and the second component (102) are fixed, the wall portion (1011) and the guide portion (1012) are located on the first component (101), the mounting portion (51) has a fluid channel (51b), the one-way valve (1) has a first channel (22) and a second channel (23), the first channel (22) and the second channel (23) are located on the second component (102), a portion of the fluid channel (51b) is communicated with the first channel (22), and another portion of the fluid channel (51b) is communicated with the second channel (23); The fluid control component (50) also includes a sealing portion (52), a first press-fit wall (53) and a second press-fit wall (54); the first press-fit wall (53) and the wall portion (1011) are an integral structure; the wall forming the installation cavity (51a) includes the second press-fit wall (54); along the axial direction of the one-way valve (1), at least a portion of the sealing portion (52) is located between the first press-fit wall (53) and the second press-fit wall (54); the sealing portion (52) is away from the valve port (40a) relative to the connecting portion (1011b).

4. The fluid control assembly (50) according to claim 3, characterized in that: The sealing portion (52) includes at least two first abutting portions (52a) and at least two second abutting portions (52b). Along the axial direction of the valve body (10), the first abutting portion (52a) and the second abutting portion (52b) are located on opposite sides of the sealing portion (52). The first abutting portion (52a) abuts against the first press-fit wall (53), and the second abutting portion (52b) abuts against the second press-fit wall (54).

5. The fluid control assembly (50) according to claim 3 or 4, characterized in that: At least a portion of the first channel (22) is located on a side of the second component (102); along the axial direction of the valve body (10), the first channel (22) is away from the sealing portion (52) relative to the connecting portion (1011b); along the axial direction of the valve body (10), the second channel (23) is away from the sealing portion (52) relative to the connecting portion (1011b).

6. The fluid control assembly (50) according to claim 3 or 4, characterized in that: The sealing portion (52) comprises a metal material, the mounting portion (51) comprises a metal material, the first component (101) comprises a metal material, and the first press-fit wall (53) of the first component (101) and the connecting portion (1011b) of the first component (101) are an integrated structure.

7. A one-way valve (1), characterized in that: The one-way valve (1) comprises a valve body (10) and a valve core component (30), wherein the valve body (10) has a valve cavity (10a), at least a portion of the valve core component (30) is located in the valve cavity (10a), the valve core component (30) comprises a valve core (31), and the one-way valve (1) comprises a valve port portion (40), and along the axial direction of the valve body (10), the valve core (31) can move to close the valve port (40a) of the valve port portion (40); The valve body (10) comprises a wall portion (1011), a guide portion (1012) and a top wall (1012b); the wall portion (1011) is connected and fixed to the mounting portion (51); the wall forming the valve cavity (10a) comprises a top wall (1012b); along the axial direction of the valve body (10), the wall portion (1011) and the guide portion (1012) protrude toward the valve port (40a) relative to the top wall (1012b); the valve core (31) comprises a mating portion (1022); and the guide portion (1012) is capable of slidably mating with the mating portion (1022).

8. The one-way valve (1) according to claim 7, characterized in that: The wall portion (1011) of the valve body (10), the top wall (1012b) and the guide portion (1012) are an integrated structure.

9. The one-way valve (1) according to claim 8, characterized in that: Along the radial direction of the valve body (10), the guide portion (1012) is close to the axis of the valve body (10) relative to the matching portion (1022), and it is defined that along the radial direction of the valve body (10), the valve core (31) and the inner wall of the valve body (10) have a first gap, and a second gap is provided between the guide portion (1012) and the matching portion (1022), and the single-side width of the first gap is greater than the single-side width of the second gap.

10. The one-way valve (1) according to any one of claims 7 to 9, characterized in that: Along the radial direction of the valve body (10), the guide portion (1012) is close to the axis of the valve body (10) relative to the wall portion (1011), the valve core component (30) also includes an elastic member (32), at least a portion of the elastic member (32) surrounds the guide portion (1012), the valve core (31) includes a shoulder portion (31b), one end of the elastic member (32) abuts against the shoulder portion (31b), and the other end of the elastic member (32) abuts against the top wall (1012b).

11. The one-way valve (1) according to claim 9 or 10, characterized in that: The guide portion (1012) includes a first wall (1012a), and the matching portion (1022) includes a second wall (1022b), the first wall (1012a) is away from the top wall (1012b) relative to the side wall of the guide portion (1012), and along the axial direction of the valve body (10), the first wall (1012a) and the second wall (1022b) are arranged opposite to each other, and the valve core (31) includes a third wall (31a), and along the axial direction of the valve body (10), at least a part of the third wall (31a) is arranged opposite to the top wall (1012b), and the third wall (31a) and the valve port portion (40) are located on opposite sides of the valve core (31); The one-way valve (1) includes a first state. In the first state, the first wall (1012a) and the second wall (1022b) are in abutment with each other, and a gap exists between the third wall (31a) and the top wall (1012b).

12. The one-way valve (1) according to claim 11, characterized in that: The guide portion (1012) includes a transition portion (1013), the first wall (1012a) is away from the top wall (1012b) relative to the side wall of the guide portion (1012), the transition portion (1013) connects the side wall and the first wall (1012a), and along the axial direction of the valve body (10), the size of the transition portion (1013) decreases from the side wall to the first wall (1012a).

13. The one-way valve (1) according to claim 11, characterized in that: The mating portion (1022) has a mating hole (1022a), and the guiding portion (1012) can be slidably mated with a wall forming the mating hole (1022a). The one-way valve (1) has a balancing hole (34), and the balancing hole (34) is located on the valve core (31) and / or the guiding portion (1012). The balancing hole (34) can connect the mating hole (1022a) and the valve cavity (10a).

14. The one-way valve (1) according to claim 7, characterized in that: The valve body comprises a first component (101) and a second component (102), the first component (101) and the second component (102) are connected and fixed, the wall portion (1011) and the guide portion (1012) are located in the first component (101), the one-way valve (1) has a first channel (22) and a second channel (23), the first channel (22) and the second channel (23) are located in the second component (102); The wall portion (1011) comprises a connecting portion (1011b), and the connecting portion (1011b) can be used to be connected and fixed to the mounting portion (51); along the axial direction of the valve body (10), the guide portion (1012) and at least part of the wall portion (1011) are located at the same height position; the valve body (10) comprises a metal material, and the wall portion (1011) and the guide portion (1012) are an integrated structure; Along the radial direction of the valve body (10), the guide portion (1012) is close to the axis of the first component (101) relative to the matching portion (1022), and it is defined that along the radial direction of the valve body (10), the valve core (31) and the inner wall of the valve body (10) have a first gap, the matching portion (1022) has a matching hole (1022a), the guide portion (1012) can be slidably matched with the wall forming the matching hole (1022a), and a second gap is provided between the guide portion (1012) and the matching portion (1022). The unilateral width of the first gap is greater than the unilateral width of the second gap; along the radial direction of the valve body (10), the guide portion (1012) is close to the axis of the valve body (10) relative to the wall portion (1011); the valve core component (30) further comprises an elastic member (32); at least a portion of the elastic member (32) surrounds the guide portion (1012); the valve core (31) comprises a shoulder portion (31b); one end of the elastic member (32) abuts against the shoulder portion (31b); and the other end of the elastic member (32) abuts against the top wall (1012b); The guide portion (1012) includes a first wall (1012a), and the matching portion (1022) includes a second wall (1022b). The first wall (1012a) is away from the top wall (1012b) relative to the side wall of the guide portion (1012). Along the axial direction of the valve body (10), the first wall (1012a) and the second wall (1022b) are arranged opposite to each other. The valve core (31) includes a third wall (31a). In the axial direction of the valve body (10), at least a portion of the third wall (31a) is arranged opposite to the top wall (1012b), and the third wall (31a) and the valve opening (40) are located on opposite sides of the valve core (31); the one-way valve (1) includes a first state, in which the first wall (1012a) and the second wall (1022b) are in contact, and a gap exists between the third wall (31a) and the top wall (1012b); The guide portion (1012) comprises a transition portion (1013), the first wall (1012a) is away from the top wall (1012b) relative to the side wall of the guide portion (1012), the transition portion (1013) connects the side wall and the first wall (1012a), and along the axial direction of the valve body (10), the size of the transition portion (1013) decreases from the side wall to the first wall (1012a); The one-way valve (1) has a balancing hole (34), and the balancing hole (34) is located on the valve core (31) and / or the guide portion (1012). The balancing hole (34) can communicate with the matching hole (1022a) and the valve cavity (10a).

Images