One-way valve

Abstract

The utility model provides a one-way valve which comprises a valve seat, a first valve pipe and a valve element. The valve seat comprises a first assembling part, the first assembling part is provided with a first assembling face perpendicular to the axial direction of the one-way valve, and the valve seat is provided with a valve hole penetrating in the axial direction. The first valve pipe is provided with a first valve cavity, one end of the first valve pipe is connected to the first assembling face, at least part of the valve seat is located outside the first valve pipe, and the first valve cavity is communicated with the valve hole. The valve element is movably arranged in the first valve cavity. Through the design, the first valve pipe is connected to the first assembly part of the valve seat, and the valve seat is partially located outside the first valve pipe. Accordingly, effective connection of the first valve pipe and the valve seat can be guaranteed, the stability of the connecting structure is improved, the influence of rotary carving machining on the structural strength of a product is avoided, and meanwhile the problem that the one-way valve generates internal leakage at the connecting position of the first valve pipe and the valve seat is avoided.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of valves, and in particular to a one-way valve. BACKGROUND

[0002] In the prior art, a one-way valve includes a valve body, a valve seat and a valve core. The valve body has a large inner diameter in the middle section and small inner diameters at both ends. The valve seat and the valve core are arranged in the valve body. In the prior art, an annular groove is arranged on the periphery of the valve seat. The valve body is processed by, for example, an external roller to deform the valve wall inward and embed the valve wall into the annular groove of the valve seat, so as to fix the valve body and the valve seat. However, the stability of the above-mentioned embedding and fixing mode of the valve body and the valve seat is poor. In addition, the valve wall is easily thinned or even broken during the processing of the valve body. Furthermore, the processing of the valve body is likely to cause internal leakage of the one-way valve at the gap between the valve body and the valve seat. SUMMARY

[0003] One main purpose of the present disclosure is to overcome at least one of the above-mentioned defects of the prior art, and to provide a one-way valve with good connection stability of a valve pipe and a valve seat, without affecting the thickness of the valve pipe wall and without being prone to internal leakage.

[0004] To achieve the above-mentioned purpose, the present disclosure adopts the following technical solutions:

[0005] According to one aspect of the present disclosure, a one-way valve is provided, which includes a valve seat, a first valve pipe and a valve core. The valve seat includes a first assembly part having a first assembly surface perpendicular to the axial direction of the one-way valve. The valve seat is provided with a valve hole penetrating in the axial direction. The first valve pipe has a first valve cavity. One end of the first valve pipe is connected to the first assembly surface. At least part of the valve seat is located outside the first valve pipe. The first valve cavity is in communication with the valve hole. The valve core is movably arranged in the first valve cavity.

[0006] According to one embodiment of the present disclosure, the first assembly part is provided with a first step structure having a first step surface perpendicular to the axial direction. The first step surface is annular. The first step surface is the first assembly surface.

[0007] According to one embodiment of the present disclosure, the valve seat and the first valve pipe are connected through a welding process.

[0008] According to one embodiment of the present disclosure, the material of the valve seat is carbon steel or stainless steel. The material of the first valve pipe is carbon steel or stainless steel.

[0009] According to one of the embodiments of the present disclosure, the first valve pipe is made of stainless steel; and the one-way valve further comprises a first joint connected to an end of the first valve pipe away from the valve seat.

[0010] According to one of the embodiments of the present disclosure, the first valve pipe comprises a first part and a second part connected in an axial direction; an inner diameter of the first part is larger than that of the second part, and a transition surface is formed on an inner wall of the first valve pipe at a connection between the first part and the second part; an end of the first part away from the second part is connected to the first assembly part; and the valve core moves towards or away from the valve seat in an axial direction to block or open the valve hole of the valve seat.

[0011] According to one of the embodiments of the present disclosure, the valve core comprises a body and at least two tail wings; the tail wings are connected to a periphery of the body and extend away from the valve seat in an axial direction, and the at least two tail wings are arranged at intervals in a circumferential direction of the body; and the one-way valve further comprises a limiting structure; the limiting structure is arranged in the first valve cavity and used for limiting rotation of the valve core in a circumferential direction.

[0012] According to one of the embodiments of the present disclosure, the limiting structure comprises a limiting arm fixed in the first valve cavity, and a part of the limiting arm is located in a region between two adjacent tail wings.

[0013] According to one of the embodiments of the present disclosure, the limiting arm extends in an axial direction, and one end of the limiting arm is connected to the valve seat.

[0014] According to one of the embodiments of the present disclosure, an end face of the valve seat facing the valve core is provided with an assembly hole, and one end of the limiting arm is inserted into the assembly hole.

[0015] According to one of the embodiments of the present disclosure, the other end of the limiting arm abuts against the transition surface.

[0016] According to one of the embodiments of the present disclosure, the limiting structure comprises two limiting arms, and the ends of the two limiting arms away from the valve seat are connected via a connecting arm on a side of the valve core away from the valve seat, and the connecting arm is used for limiting movement of the valve core away from the valve seat in an axial direction; and the connecting arm forms a limiting protrusion protruding towards the valve core and used for limiting a maximum stroke of the valve core in an axial direction.

[0017] According to one of the embodiments of the present disclosure, the limiting protrusion is in a shape of a rectangle, a triangle or an arc.

[0018] According to one of the embodiments of the present disclosure, the limiting structure comprises a limiting strip arranged on the inner wall of the first valve cavity in the axial direction, and a part of the limiting strip is located in the area between two adjacent tail wings to limit the rotation of the valve core in the circumferential direction; or the limiting structure comprises a limiting rib arranged on the inner wall of the first valve cavity in the axial direction, and a part of the limiting rib is located in the area between two adjacent tail wings to limit the rotation of the valve core in the circumferential direction.

[0019] According to one of the embodiments of the present disclosure, the valve core comprises at least three tail wings, and any two tail wings are arranged at intervals.

[0020] According to one of the embodiments of the present disclosure, the valve seat further comprises a second assembly part arranged in the axial direction with the first assembly part, the second assembly part has a second assembly face perpendicular to the axial direction, and the second assembly face is opposite to the first assembly face; the one-way valve further comprises a second valve pipe; the second valve pipe has a second valve cavity, one end of the second valve pipe is connected to the second assembly face, and the second valve cavity is connected to the first valve cavity through the valve hole.

[0021] According to one of the embodiments of the present disclosure, the second assembly part is provided with a second step structure having a second step face perpendicular to the axial direction, the second step face is annular, and the second step face is the second assembly face.

[0022] According to one of the embodiments of the present disclosure, the valve seat and the second valve pipe are connected through a welding process.

[0023] According to one of the embodiments of the present disclosure, the material of the second valve pipe is carbon steel or stainless steel.

[0024] According to one of the embodiments of the present disclosure, the material of the second valve pipe is stainless steel; and the one-way valve further comprises a second joint connected to the end of the second valve pipe away from the valve seat.

[0025] According to one of the embodiments of the present disclosure, the inner diameter of the second valve pipe is greater than or equal to the hole diameter of the valve hole; and / or, the first valve pipe comprises a first part and a second part connected in the axial direction; the inner diameter of the first part is greater than the inner diameter of the second part, and the inner wall of the first valve pipe is formed with a transition face at the connection between the first part and the second part; the first valve pipe is connected to the first assembly part at the end of the first part away from the second part; and the inner diameter of the second part is greater than or equal to the inner diameter of the second valve pipe.

[0026] According to one of the embodiments of the present disclosure, the valve core comprises at least three said tail wings.

[0027] From the above technical solutions, the one-way valve provided by the present disclosure has the advantages and positive effects that:

[0028] The one-way valve provided by the present disclosure comprises a valve seat, a first valve pipe and a valve core. The valve seat comprises a first assembly part, which has a first assembly surface perpendicular to the axial direction of the one-way valve. One end of the first valve pipe is connected to the first assembly surface, and at least part of the valve seat is located outside the first valve pipe. The first valve cavity is in communication with the valve hole. The valve core is movably arranged in the first valve cavity. Through the above design, the present disclosure connects the first valve pipe to the first assembly part of the valve seat, and at least part of the valve seat is located outside the first valve pipe. Accordingly, the present disclosure can ensure the effective connection of the first valve pipe and the valve seat, improve the connection stability, avoid the influence of rotary carving processing on the structural strength of the product, and at the same time avoid the internal leakage problem of the one-way valve at the connection between the first valve pipe and the valve seat. BRIEF DESCRIPTION OF DRAWINGS

[0029] The various objectives, features and advantages of the present disclosure will become more apparent from the following detailed description of the preferred embodiments of the present disclosure, taken in conjunction with the accompanying drawings. The accompanying drawings are merely exemplary illustrations of the present disclosure and are not necessarily drawn to scale. In the drawings, like reference numerals always designate the same or similar components. Among them:

[0030] Figure 1 is a perspective view of a one-way valve according to an exemplary embodiment;

[0031] Figure 2 is a perspective exploded view of Figure 1 ;

[0032] Figure 3 is an axial side sectional view of Figure 1 ;

[0033] Figure 4 and Figure 5 are perspective views of the valve seat from two different angles, respectively, as shown in Figure 2 ;

[0034] Figure 6 is a perspective view of a part of the structure of the one-way valve, as shown in Figure 1 ;

[0035] Figure 7 and Figure 8 are perspective views of the valve core from two different angles, respectively, as shown in Figure 2 ;

[0036] Figure 9 is a partial sectional view of the valve core, as shown in Figure 2 ;

[0037] Figure 10 is Figure 2 a plan view of the limiting structure of the check valve shown in the figure;

[0038] Figure 11 and Figure 12 are plan views of the limiting structure of the check valve shown according to two other exemplary embodiments, respectively;

[0039] Figure 13 is a perspective view of the check valve shown according to another exemplary embodiment;

[0040] Figure 14 is Figure 13 a perspective exploded view of the check valve shown in the figure;

[0041] Figure 15 is Figure 13 an axial sectional view of the check valve shown in the figure.

[0042] The reference signs are explained as follows:

[0043] 100. valve seat;

[0044] 101. valve hole;

[0045] 102. assembly hole;

[0046] 110. second assembly portion;

[0047] 111. second step surface;

[0048] 120. first assembly portion;

[0049] 121. first step surface;

[0050] 200. second valve tube;

[0051] 201. second valve cavity;

[0052] 300. first valve tube;

[0053] 301. first valve cavity;

[0054] 310. first portion;

[0055] 320. second portion;

[0056] 330. transition surface;

[0057] 400. valve core;

[0058] 410. body;

[0059] 411. weight-reducing hole;

[0060] 420. tail fin;

[0061] 510. second joint;

[0062] 520. first joint;

[0063] 600. limiting structure;

[0064] 610. limiting arm;

[0065] 620. connecting arm;

[0066] 621. limiting protrusion. DETAILED DESCRIPTION

[0067] Embodiments embodying the features and advantages of the present disclosure will be described in detail hereinafter. It should be understood that the present disclosure can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the disclosure to those skilled in the art.

[0068] In the following description of various example embodiments of the present disclosure, reference is made to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various example structures, systems, and steps in which aspects of the present disclosure can be practiced. It is to be understood that other specific arrangements of parts, structures, example devices, systems, and steps can be utilized and that structural and functional modifications can be made without departing from the scope of the present disclosure. Also, while the terms "over," "between," "inner," "outer," and the like can be used in the description of the various example features and elements of the present disclosure, these terms are used in the context of the specific example embodiments being discussed and are not intended to limit the scope of the present disclosure. Any use of such terms in the present description should be interpreted accordingly.

[0069] Referring to Figure 1 , a perspective view schematically shows a one-way valve according to the present disclosure. In this example embodiment, the one-way valve according to the present disclosure is described by way of example as applied to an oil separator. It will be readily understood by those skilled in the art that various modifications, additions, substitutions, deletions, or other changes can be made to the following detailed description of the present disclosure in order to apply the relevant design of the present disclosure to other application scenarios, and such changes are still within the scope of the one-way valve according to the present disclosure.

[0070] As shown in Figure 1 , in an embodiment of the present disclosure, the one-way valve according to the present disclosure includes a valve seat 100, a first valve pipe 300, and a valve core 400. For reference, see Figures 2 to 10 , Figure 2 , a perspective exploded view schematically shows Figure 1 ; and Figure 3 , a perspective view schematically showsFigure 1 a side view of the shaft of the valve seat 100; Figure 4 and Figure 5 representative perspective views of the valve seat 100 from two different angles, respectively;

[0071] Figure 6 representative perspective views of the partial structure of the one-way valve; Figure 7 and Figure 8 representative perspective views of the valve core 400 from two different angles, respectively; Figure 9 representative partial sectional view of the valve core 400; Figure 10 representative plan view of the limiting structure 600. The structure, connection mode and functional relationship of the main components of the one-way valve according to the present disclosure will be described in detail below in combination with the above-mentioned drawings.

[0072] As shown in Figures 1 to 5 , in an embodiment of the present disclosure, the valve seat 100 comprises a first assembly part 120 having a first assembly surface perpendicular to the axial direction of the one-way valve, and the valve seat 100 is provided with a valve hole 101 passing through in the axial direction. The first valve pipe 300 has a first valve cavity 301, and one end of the first valve pipe 300 is connected to the first assembly surface of the first assembly part 120, so that at least part of the valve seat 100 is located outside the first valve pipe 300. The first valve pipe 300 may, for example, adopt a straight pipe structure. The first valve cavity 301 is in communication with the valve hole 101 of the valve seat 100. The valve core 400 is movably arranged in the first valve cavity 301. The part of the valve seat 100 facing the first valve pipe 300 and located in the first valve cavity 301 can cooperate with the valve core 400 for sealing the valve core 400. Through the above design, the present disclosure connects the first valve pipe 300 to the first assembly part 120 of the valve seat 100, and part of the valve seat 100 is located outside the first valve pipe 300. Accordingly, the present disclosure can ensure the effective connection of the first valve pipe 300 and the valve seat 100, improve the stability of the connection structure, avoid the influence of rotary carving processing on the structural strength of the product, and at the same time avoid the problem of internal leakage of the one-way valve at the connection between the first valve pipe 300 and the valve seat 100.

[0073] As shown in Figure 3 and Figure 4As shown, in an embodiment of the present disclosure, the first assembly portion 120 of the valve seat 100 can be provided with a first stepped structure having a first stepped surface 121 perpendicular to the axial direction, and the first stepped surface 121 is annular, and the first stepped surface 121 can serve as the first assembly surface mentioned above, i.e., one end of the first valve pipe 300 is connected to the first stepped surface 121. Through the above design, the present disclosure can realize the planar butt joint of the first assembly portion 120 and the first valve pipe 300, and when connecting the valve seat 100 and the first valve pipe 300 by using a laser welding process for example, it is more conducive to the implementation of the laser welding process, and it is suitable to realize the assembly process of butt joint of the end of the first valve pipe 300 to the first stepped structure and then welding and fixing, which is simple in process and does not need a pre-positioning clamp.

[0074] In an embodiment of the present disclosure, the valve seat 100 and the first valve pipe 300 can be connected through a welding process, such as a fusion welding process, which can be a laser welding process, an argon arc welding process, etc.

[0075] In an embodiment of the present disclosure, the material of the valve seat 100 can be carbon steel or stainless steel. Through the above design, since the valve seat 100 is made of stainless steel or the like, the present disclosure can make the valve seat 100 suitable to realize the connection with the first valve pipe 300 through a laser welding process or the like, which is conducive to reducing the process difficulty and process cost. Furthermore, since the cost of stainless steel is lower than that of other metal materials (such as copper), the present disclosure can make the material cost of the one-way valve more affordable, further meeting the market demand.

[0076] In an embodiment of the present disclosure, the material of the first valve pipe 300 can be carbon steel or stainless steel. Through the above design, since the first valve pipe 300 is made of stainless steel or the like, the present disclosure can make the first valve pipe 300 suitable to realize the connection with the valve seat 100 through a laser welding process or the like, which is conducive to reducing the process difficulty and process cost. Furthermore, since the cost of stainless steel is lower than that of other metal materials (such as copper), the present disclosure can make the material cost of the one-way valve more affordable, further meeting the market demand.

[0077] In an embodiment of the present disclosure, the hole wall of the valve hole 101 can be provided with a first sealing surface, which can be an arc surface for example. And the periphery of the valve core 400 can be provided with a second sealing surface, which can be an inclined surface for example. Accordingly, the first sealing surface and the second sealing surface are sealingly matched. In some embodiments, the first sealing surface can also be an inclined surface, and in addition, the second sealing surface can also be an arc surface, which is not limited to the present embodiment.

[0078] In an embodiment of the present disclosure, the material of the valve core 400 can be plastic, such as nylon or PPS, etc.

[0079] Referring toFigures 13 to 15 As shown, Figure 13 The diagram shows a three-dimensional schematic representation of a one-way valve that embodies the principles of this disclosure in another exemplary embodiment. Figure 14 China representatively shows Figure 13 A three-dimensional exploded view; Figure 15 China representatively shows Figure 13 Axonometric sectional view.

[0080] like Figures 13 to 15 As shown, in one embodiment of this disclosure, the one-way valve may further include a first connector 520, which is connected to the end of the first valve tube 300 away from the valve seat 100. With the above design, the one-way valve can utilize the first connector 520 to connect the first valve tube 300 to related components.

[0081] Based on the design of the one-way valve including the first connector 520, in one embodiment of this disclosure, taking the material of the first valve pipe 300 as stainless steel as an example, the material of the first connector 520 can be copper, specifically, for example, red copper or brass. Through the above design, for application scenarios where the material of related components is copper, such as when the materials of air conditioning system components and pipes are copper, this disclosure can utilize the first connector 520 to achieve an effective connection between the first valve pipe 300 and the related components. In other embodiments of this disclosure, when the material of the related components is stainless steel, the one-way valve proposed in this disclosure may also omit the first connector 520, in which case the end of the first valve pipe 300 away from the valve seat 100 can be directly connected to the related components, and is not limited to the above embodiments.

[0082] Based on the design of the one-way valve, which also includes a first connector 520, in one embodiment of this disclosure, the first connector 520 and the first valve pipe 300 can be connected by a brazing process.

[0083] like Figures 1 to 3As shown, in an embodiment of the present disclosure, the first valve tube 300 comprises a first portion 310 and a second portion 320 connected in an axial direction. Specifically, the inner diameter of the first portion 310 is larger than that of the second portion 320. It should be understood that the above description of the inner diameter of different portions of the first valve tube 300 does not limit the appearance of the first valve tube 300 to a certain structure. For example, the appearance of the first valve tube 300 can be a structure with a large diameter on one side and a small diameter on the other side as shown in the drawings, or a structure with a uniform outer diameter, or other possible structures. The inner wall of the first valve tube 300 forms a transition surface 330 at the connection between the first portion 310 and the second portion 320. On this basis, the end of the first portion 310 away from the second portion 320 is connected to the first assembly portion 120. The spool 400 moves in an axial direction towards or away from the valve seat 100 to block or open the valve hole of the valve seat 100. For example, when the spool 400 moves in an axial direction towards the valve seat 100 to the maximum stroke, the spool 400 (e.g. the body 410 of the spool 400) abuts against the valve seat 100 and is limited to continue moving towards the valve seat 100, at which time the spool 400 blocks the valve hole.

[0084] On this basis, when the medium flows in a forward direction from the first portion 310 to the second portion 320, under the pressure of the medium, the spool 400 moves away from the valve seat 100 and is arranged spaced apart from the valve seat 100, at which time the medium entering through the valve hole 101 can flow through the flow passage between the spool 400 and the first valve tube (e.g. the flow passage between the body 410 and the inner wall of the first valve tube not occupied by the tail wing 420, the flow passage being formed by the flow space between adjacent tail wings and the inner wall of the valve tube), and further be discharged through the second portion 320. Furthermore, when the medium flows in a reverse direction from the second portion 320 to the first portion 310, under the pressure of the medium, the spool 400 moves towards the valve seat 100 and abuts against the valve seat 100, at which time the spool 400 blocks the valve hole 101, and the spool 400 can prevent the medium from flowing in a reverse direction.

[0085] As Figure 2 , Figure 3 , Figures 6 to 10As shown, in one embodiment of this disclosure, the valve core 400 includes a body 410 and at least two tail fins 420. The tail fins 420 are connected to the periphery of the body 410 and extend axially away from the valve seat 100. At least two tail fins 420 are arranged circumferentially spaced along the body 410. Based on this, the one-way valve proposed in this disclosure also includes a limiting structure 600. The limiting structure 600 is disposed in the first valve cavity 301 and can limit the circumferential rotation of the valve core 400. Through the above design, this disclosure can utilize the limiting structure 600 to limit the circumferential rotation of the valve core 400. Furthermore, by utilizing the design of at least two tail fins 420, the flow space between the valve core 400 and the first valve cavity 301 is divided into at least two flow channels, which helps to improve the stability of the valve core 400's axial movement within the first part 310 and further reduces the risk of valve core 400 deflection.

[0086] like Figure 6 and Figure 10 As shown, based on the design of the one-way valve including the limiting structure 600, in one embodiment of this disclosure, the limiting structure 600 may include a limiting arm 610. The limiting arm 610 is fixed in the first valve chamber 301, specifically located in the first valve chamber 301 of the first part 310, and a portion of the limiting arm 610 is located in the area between two adjacent tail fins 420. With the above design, when the valve core 400 rotates circumferentially by a certain angle, the tail fins 420 abut against the limiting arm 610, preventing the valve core 400 from continuing to rotate.

[0087] like Figure 3 and Figure 6 As shown, based on the design of the limiting structure 600 including the limiting arm 610, in one embodiment of this disclosure, the limiting arm 610 extends axially, and one end of the limiting arm 610 can be connected to the valve seat 100. Through the above design, this disclosure connects the limiting arm 610 to the valve seat 100, and uses the valve seat 100 to fix the limiting arm 610, resulting in a reliable connection and a simple structure.

[0088] like Figure 4 and Figure 6 As shown, based on the design of the limiting arm 610 connecting to the valve seat 100, in one embodiment of this disclosure, a mounting hole 102 can be provided on the end face of the valve seat 100 facing the valve core 400, and one end of the limiting arm 610 can be inserted into the mounting hole 102. Through the above design, this disclosure further optimizes the connection effect between the limiting arm 610 and the valve seat 100.

[0089] like Figure 3As shown in Figs. 1 1 and 12, based on the design that the limiting arm 610 is connected with the valve seat 100, in an embodiment of the present disclosure, the other end of the limiting arm 610 (i.e. the end away from the valve seat 100) can abut against the transition surface 330 of the first valve tube 300. Through the above design, the present disclosure fixes the limiting arm 610 in the first valve cavity 301 of the first part 310 by connecting one end of the limiting arm 610 with the valve seat 100 and stopping the other end of the limiting arm 610 with the transition surface 330 of the first valve tube 300, thereby further optimizing the assembly effect of the limiting arm 610 and ensuring the rotation limitation of the valve core 400.

[0090] As shown in Figs. 1 1 and 12, Figure 6 and Figure 10 As shown in Figs. 1 1 and 12, based on the design that the limiting arm 610 is connected with the valve seat 100, in an embodiment of the present disclosure, the other end of the limiting arm 610 (i.e. the end away from the valve seat 100) can abut against the transition surface 330 of the first valve tube 300. Through the above design, the present disclosure fixes the limiting arm 610 in the first valve cavity 301 of the first part 310 by connecting one end of the limiting arm 610 with the valve seat 100 and stopping the other end of the limiting arm 610 with the transition surface 330 of the first valve tube 300, thereby further optimizing the assembly effect of the limiting arm 610 and ensuring the rotation limitation of the valve core 400.

[0091] As shown in Figs. 1 1 and 12, Figure 11 and Figure 12 As shown in Figs. 1 1 and 12, Figure 11 and Figure 12 Figs. 1 1 and 12 respectively represent planar schematic views of the limiting structure 600 of the one-way valve capable of embodying the principles of the present disclosure in two other exemplary embodiments.

[0092] As shown in Figs. 1 1 and 12, Figure 11 and Figure 12 As shown in Figs. 1 1 and 12, based on the design that the limiting arm 610 is connected with the valve seat 100, in an embodiment of the present disclosure, the other end of the limiting arm 610 (i.e. the end away from the valve seat 100) can abut against the transition surface 330 of the first valve tube 300. Through the above design, the present disclosure fixes the limiting arm 610 in the first valve cavity 301 of the first part 310 by connecting one end of the limiting arm 610 with the valve seat 100 and stopping the other end of the limiting arm 610 with the transition surface 330 of the first valve tube 300, thereby further optimizing the assembly effect of the limiting arm 610 and ensuring the rotation limitation of the valve core 400.

[0093] Based on the design of forming a limiting protrusion 621 on the connecting arm 620, in one embodiment of this disclosure, the limiting protrusion 621 can be rectangular (e.g., Figure 11 As shown), triangle (as shown) Figure 12 (as shown in the figure) or an arc shape, etc. Specifically, the protrusion can be formed by bending the connecting arm 620 toward the valve seat 100 as shown in the figure. It is only necessary to form a protruding end, and there is no need to limit the specific shape.

[0094] In other embodiments not illustrated in this disclosure, the limiting structure 600 may further include a limiting strip disposed on the inner wall of the first valve cavity 301 and arranged axially. A portion of the limiting strip is located in the area between two adjacent tail fins 420 to restrict the circumferential rotation of the valve core 400. The limiting strip may be integral with the first valve tube 300, or it may be fixed to the inner wall of the first valve tube 300 using a connection process such as spot welding.

[0095] In other embodiments not illustrated in this disclosure, the limiting structure 600 may further include limiting ribs. These ribs are disposed on the inner wall of the first valve cavity 301 and arranged axially. A portion of the limiting rib is located in the area between two adjacent tail fins 420 to restrict the circumferential rotation of the valve core 400. For example, multiple dotted grooves or strip grooves can be pressed inwards from the inner wall of the first part 310 as limiting ribs. The multiple dotted grooves can be distributed axially to be disposed within the gap between any two tail fins 420. When the valve core 400 tends to rotate circumferentially, a circumferential stop is formed between the limiting rib and the tail fin 420, thereby achieving the limiting function of preventing the valve core 400 from rotating. Alternatively, the strip groove can extend axially to achieve the limiting function of preventing the valve core 400 from rotating.

[0096] like Figures 6 to 9 As shown, based on the design of the valve core 400 including the body 410 and the tail fin 420, in one embodiment of this disclosure, the valve core 400 may be provided with at least three tail fins 420, such as, but not limited to, the three tail fins 420 shown in the figures, and any two tail fins 420 are arranged at intervals. Through the above design, since the tail fins 420 can divide the flow space between the valve core 400 and the inner wall of the first valve tube 300 into multiple flow channels, this disclosure increases the number of tail fins 420, for example, three or more, which enables the flow space to be divided into more flow channels, thus improving the axial sliding stability of the valve core 400 and further reducing the risk of valve core 400 deflection.

[0097] like Figures 7 to 9 As shown, in one embodiment of this disclosure, the valve core 400 may be provided with a weight-reducing hole 411. For example, the weight-reducing hole 411 may be provided on the body 410 of the valve core 400. Through the above design, this disclosure can reduce the weight of the valve core 400 and reduce the material cost of the valve core 400.

[0098] As shown in the drawings, Figures 1 to 3 In an embodiment of the present disclosure, the valve seat 100 can further comprise a second assembly portion 110, the second assembly portion 110 is arranged along the axial direction with the first assembly portion 110, and the second assembly portion 110 has a second assembly surface perpendicular to the axial direction, and the second assembly surface is opposite to the first assembly surface in the direction. In addition, the one-way valve provided by the present disclosure further comprises a second valve pipe 200. The second valve pipe 200 has a second valve cavity 201, one end of the second valve pipe 200 is connected to the second assembly surface of the second assembly portion 110, and the second valve cavity 201 is connected to the first valve cavity 301 through the valve hole 101. The second valve pipe 200 can be, for example, a straight pipe structure.

[0099] As shown in the drawings, Figure 3 and Figure 5 Based on the design that the one-way valve comprises the second valve pipe 200, in an embodiment of the present disclosure, the second assembly portion 110 of the valve seat 100 can be provided with a second step structure, the second step structure has a second step surface 111 perpendicular to the axial direction, and the second step surface 111 is annular, and the second step surface 111 can be used as the above-mentioned second assembly surface, that is, one end of the second valve pipe 200 is connected to the second step surface 111. Through the above-mentioned design, the present disclosure can realize the planar butt joint of the second assembly portion 110 and the second valve pipe 200, and when the valve seat 100 and the second valve pipe 200 are connected by using, for example, a laser welding process, it is more conducive to the implementation of the laser welding process.

[0100] Based on the design that the one-way valve comprises the second valve pipe 200, in an embodiment of the present disclosure, the valve seat 100 and the second valve pipe 200 can be connected through a welding process, for example, a fusion welding process, which can be a laser welding process, an argon arc welding process, etc.

[0101] Based on the design that the one-way valve comprises the second valve pipe 200, in an embodiment of the present disclosure, the material of the second valve pipe 200 can be carbon steel or stainless steel. Through the above-mentioned design, since the second valve pipe 200 is made of stainless steel and the like, the present disclosure can make the second valve pipe 200 suitable for being connected to the valve seat 100 through a welding process such as laser welding, which is conducive to reducing the process difficulty and process cost. Furthermore, since the cost of stainless steel is lower than that of other metal materials (for example, copper), the present disclosure can make the material cost of the one-way valve more affordable, further meeting the market demand.

[0102] As shown in the drawings, Figures 13 to 15As shown, still taking the design of the one-way valve including the second valve pipe 200 as an example, in an embodiment of the present disclosure, the one-way valve proposed by the present disclosure can further include a second joint 510 connected to the end of the second valve pipe 200 away from the valve seat 100. Through the above design, the one-way valve can realize the connection of the second valve pipe 200 and the related components by using the second joint 510.

[0103] Based on the design of the one-way valve including the second joint 520, in an embodiment of the present disclosure, taking the material of the second valve pipe 200 as stainless steel as an example, the material of the second joint 510 can be copper, such as red copper or brass, etc. Through the above design, for the application scenarios of using copper as the material of the related components, such as the material of the parts and pipelines of the air conditioning system, the present disclosure can realize the effective connection of the second valve pipe 200 and the related components by using the second joint 510. In some other embodiments of the present disclosure, when the material of the related components is stainless steel, the one-way valve proposed by the present disclosure can also not be provided with the second joint 510, and then the end of the second valve pipe 200 away from the valve seat 100 can be directly connected to the related components, which is not limited to the above embodiment.

[0104] Based on the design of the one-way valve further including the second joint 510, in an embodiment of the present disclosure, the second joint 510 and the second valve pipe 200 can be connected by using the brazing process.

[0105] Based on the design of the one-way valve including the second valve pipe 200, in an embodiment of the present disclosure, the inner diameter of the second valve pipe 200 can be greater than or equal to the hole diameter of the valve hole 101.

[0106] Based on the design of the one-way valve including the second valve pipe 200, in an embodiment of the present disclosure, when the first valve pipe 300 includes the first part 310 and the second part 320, the inner diameter of the second part 320 can be greater than or equal to the inner diameter of the second valve pipe 200.

[0107] It should be noted that the one-way valves shown in the drawings and described in the specification are only a few examples of many one-way valves that can use the principles of the present disclosure. It should be clearly understood that the principles of the present disclosure are by no means limited to any details or any components of the one-way valves shown in the drawings or described in the specification.

[0108] In summary, the one-way valve provided by the present disclosure comprises a valve seat 100, a first valve pipe 300, and a valve core 400; the valve seat 100 comprises a first assembly part 120, which has a first assembly surface perpendicular to the axial direction of the one-way valve; one end of the first valve pipe 300 is connected to the first assembly surface, at least part of the valve seat 100 is located outside the first valve pipe 300, the first valve cavity 301 is in communication with the valve hole 101; and the valve core 400 is movably arranged in the first valve cavity 301. Through the above design, the present disclosure connects the first valve pipe 300 to the first assembly part 120 of the valve seat 100, and at least part of the valve seat 100 is located outside the first valve pipe 300. Accordingly, the present disclosure can ensure the effective connection of the first valve pipe 300 and the valve seat 100, improve the connection stability, avoid the influence of rotary carving processing on the structural strength of the product, and at the same time avoid the internal leakage problem of the one-way valve at the connection between the first valve pipe 300 and the valve seat 100.

[0109] The exemplary embodiments of the one-way valve provided by the present disclosure are described and / or illustrated in detail above. However, the embodiments of the present disclosure are not limited to the specific embodiments described herein, but rather, components and / or steps of each embodiment can be used independently and separately from other components and / or steps described herein. Each component and / or step of one embodiment can also be used in combination with other components and / or steps of other embodiments. The phraseology and terminology used herein is for the purpose of description and not of limitation. The terms "a" or "an" are used to mean one or more than one. The term "including" is used to mean "comprising" or "consisting of" and vice versa.

[0110] Although the one-way valve provided by the present disclosure has been described in accordance with various specific embodiments, it will be recognized that modifications can be made to the embodiments of the present disclosure within the spirit and scope of the claims.

Claims

1. A one-way valve, characterized in that, include: The valve seat (100) includes a first mounting portion (120) having a first mounting surface perpendicular to the axial direction of the one-way valve, and the valve seat (100) is provided with a valve hole (101) that extends through the axial direction. A first valve tube (300) having a first valve cavity (301) is connected at one end to the first mounting surface such that at least a portion of the valve seat (100) is located outside the first valve tube (300), and the first valve cavity (301) is connected to the valve hole (101). The valve core (400) is movably disposed in the first valve chamber (301).

2. The one-way valve according to claim 1, characterized in that, The first assembly part (120) is provided with a first step structure, the first step structure has a first step surface (121) perpendicular to the axial direction, the first step surface (121) is annular, and the first step surface (121) is the first assembly surface.

3. The one-way valve according to claim 1, characterized in that, The valve seat (100) is connected to the first valve tube (300) by a welding process.

4. The one-way valve according to claim 1, characterized in that: The valve seat (100) is made of carbon steel or stainless steel; and / or The first valve tube (300) is made of carbon steel or stainless steel.

5. The one-way valve according to claim 1, characterized in that, The first valve tube (300) is made of stainless steel; the one-way valve also includes a first connector (520), which is connected to the end of the first valve tube (300) away from the valve seat (100).

6. The one-way valve according to claim 1, characterized in that, The first valve tube (300) includes a first part (310) and a second part (320) connected axially; the inner diameter of the first part (310) is larger than the inner diameter of the second part (320), and the inner wall of the first valve tube (300) forms a transition surface (330) at the connection between the first part (310) and the second part (320); the end of the first part (310) away from the second part (320) is connected to the first assembly part (120); the valve core (400) moves axially toward or away from the valve seat (100) to block or open the valve hole of the valve seat (100).

7. The one-way valve according to claim 6, characterized in that, The valve core (400) includes a body (410) and at least two tail fins (420); the tail fins (420) are connected to the periphery of the body (410) and extend axially away from the valve seat (100), and the at least two tail fins (420) are arranged circumferentially around the body (410); wherein: the one-way valve further includes: A limiting structure (600) is disposed in the first valve chamber (301) to limit the circumferential rotation of the valve core (400).

8. The one-way valve according to claim 7, characterized in that, The limiting structure (600) includes a limiting arm (610) fixed in the first valve chamber (301), and a portion of the limiting arm (610) is located in the region between two adjacent tail fins (420).

9. The one-way valve according to claim 8, characterized in that, The limiting arm (610) extends axially, with one end connected to the valve seat (100).

10. The one-way valve according to claim 9, characterized in that, The valve seat (100) has an assembly hole (102) on its end face facing the valve core (400), and one end of the limiting arm (610) is inserted into the assembly hole (102).

11. The one-way valve according to claim 9, characterized in that, The other end of the limiting arm (610) abuts against the transition surface (330).

12. The one-way valve according to claim 8, characterized in that, The limiting structure (600) includes two limiting arms (610), the ends of the two limiting arms (610) away from the valve seat (100) are connected via a connecting arm (620), and the connecting arm (620) is located on the side of the valve core (400) away from the valve seat (100). The connecting arm (620) is used to limit the movement of the valve core (400) away from the valve seat (100) along the axial direction; wherein, the connecting arm (620) forms a limiting protrusion (621), the limiting protrusion (621) protrudes toward the valve core (400), and is used to limit the maximum stroke of the valve core (400) along the axial direction.

13. The one-way valve according to claim 12, characterized in that, The limiting protrusion (621) is rectangular, triangular, or arc-shaped.

14. The one-way valve according to claim 7, characterized in that: The limiting structure (600) includes a limiting strip disposed on the inner wall of the first valve cavity (301) and arranged axially. A portion of the limiting strip is located in the area between two adjacent tail fins (420) to restrict the circumferential rotation of the valve core (400); or, The limiting structure (600) includes a limiting rib, which is disposed on the inner wall of the first valve cavity (301) and arranged axially. A portion of the limiting rib is located in the area between two adjacent tail fins (420) to restrict the circumferential rotation of the valve core (400).

15. The one-way valve according to claim 7, characterized in that, The valve core (400) includes at least three tail fins (420), with any two tail fins (420) arranged at intervals.

16. The one-way valve according to claim 1, characterized in that, The valve seat (100) further includes a second assembly portion (110), which is axially arranged with the first assembly portion (120). The second assembly portion (110) has a second assembly surface perpendicular to the axial direction, and the second assembly surface is oriented opposite to the first assembly surface. The one-way valve further includes: The second valve tube (200) has a second valve cavity (201), one end of which is connected to the second mounting surface, and the second valve cavity (201) is connected to the first valve cavity (301) via the valve hole (101).

17. The one-way valve according to claim 16, characterized in that, The second assembly part (110) is provided with a second step structure, the second step structure has a second step surface (111) perpendicular to the axial direction, the second step surface (111) is annular, and the second step surface (111) is the second assembly surface.

18. The one-way valve according to claim 16, characterized in that, The valve seat (100) and the second valve tube (200) are connected by a welding process.

19. The one-way valve according to claim 16, characterized in that, The material of the second valve tube (200) is carbon steel or stainless steel.

20. The one-way valve according to claim 16, characterized in that, The second valve tube (200) is made of stainless steel; the one-way valve also includes a second connector (510), which is connected to the end of the second valve tube (200) away from the valve seat (100).

21. The one-way valve according to claim 16, characterized in that: The inner diameter of the second valve tube (200) is greater than or equal to the diameter of the valve orifice (101); and / or The first valve tube (300) includes a first part (310) and a second part (320) connected axially; the inner diameter of the first part (310) is larger than the inner diameter of the second part (320), and the inner wall of the first valve tube (300) forms a transition surface (330) at the connection between the first part (310) and the second part (320); the first valve tube (300) is connected to the first assembly part (120) at the end of the first part (310) away from the second part (320); the inner diameter of the second part (320) is greater than or equal to the inner diameter of the second valve tube (200).

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