One-way valve and air conditioner

Abstract

The utility model discloses a check valve, including valve seat, valve core and valve port seat, the valve seat has the liquid flow channel, the valve core can slideablely be arranged in the liquid flow channel, the valve port seat is located in the liquid flow channel, and the valve port seat is provided with the valve port, one end of valve core is opposite with the valve port, and the outer wall of valve core is slidably attached with the inner wall of liquid flow channel, the inner wall of liquid flow channel is formed with annular protruding, the protruding and valve core form interval, and the protruding is close to the opening of liquid flow channel relative to valve core, the check valve still includes elastic part, and the elastic part is arranged between the protruding and valve core, the protruding and the first end of elastic part all protrude from the surface of liquid flow channel and valve core slidingly attached, and are spaced apart, the utility model improves the stability and smoothness of valve core movement.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a one-way valve and an air conditioner. Background Technology

[0002] A check valve generally consists of a valve seat and a valve core. The valve core is usually slidably installed inside the valve seat. By sliding the valve core to different positions, the state of the fluid passage inside the valve seat can be switched between open and closed.

[0003] After the check valve is installed in the corresponding equipment, problems such as unstable sliding of the valve core or inability to move may occur, which will affect the check valve from performing its function. Utility Model Content

[0004] This utility model aims to solve one of the technical problems in related technologies to a certain extent. Therefore, this utility model provides a one-way valve and an air conditioner, which can improve product quality.

[0005] To achieve the above objectives, the first aspect of this utility model discloses a one-way valve, comprising a valve seat, a valve core, and a valve port seat. The valve seat has a fluid flow channel, the valve core is slidably disposed within the fluid flow channel, the valve port seat is disposed within the fluid flow channel, and a valve port is provided on the valve port seat. One end of the valve core is opposite to the valve port.

[0006] The outer wall of the valve core slides against the inner wall of the liquid flow channel;

[0007] An annular protrusion is formed on the inner wall of the liquid flow channel, the protrusion and the valve core are spaced apart, and the protrusion is closer to the opening of the liquid flow channel than the valve core.

[0008] The one-way valve also includes an elastic element disposed between the protrusion and the valve core; the first ends of the protrusion and the elastic element both protrude from the surface of the fluid flow channel and the valve core that slide against each other, and are spaced apart.

[0009] In this technical solution, the outer wall of the valve core slides directly against the inner wall of the valve seat, making the sliding of the valve core more stable during position switching, thereby improving the service life and opening / closing accuracy of the check valve. By setting a protruding structure on the inner wall of the valve seat, during the production process, when the check valve is welded to external pipe fittings, the protrusion can, on the one hand, position the external pipe fittings inside the valve seat, and on the other hand, prevent the welding liquid from flowing along the inner wall of the valve seat to the valve core, avoiding the valve core being fixed by the welding liquid and unable to move, or the welding liquid solidifying on the inner wall of the valve seat and affecting the sliding of the valve core. Moreover, the double-layer protective barrier effect of the elastic element and the protruding structure further reduces the impact of welding liquid on the movement of the valve core.

[0010] Furthermore, the valve seat includes a first tube body, a second tube body, and a tapered tube connecting the first tube body and the second tube body. The fluid flow channel is formed by passing through the inner cavities of the first tube body, the second tube body, and the tapered tube. The inner diameter of the first tube body is larger than the inner diameter of the second tube body. The valve core and the elastic element are disposed in the first tube body. The first end of the elastic element abuts against the inner wall of the tapered tube in a circumferential direction. The protrusion is formed on the inner wall of the second tube body.

[0011] Furthermore, the height of the protrusion protruding from the inner wall of the second tube is between 0.5 mm and 1.5 mm.

[0012] Furthermore, the valve core is configured as a cylindrical shape with one end open and the other end closed. A sliding cylinder is formed at one end of the valve core opening, and an opening and closing mating cylinder is formed at the other end. The opening and closing mating cylinder is opposite to the valve port, and at least one through hole communicating with the inner cavity of the valve core is formed on the side wall of the opening and closing mating cylinder.

[0013] The outer wall of the sliding cylinder slides against the inner wall of the liquid flow channel to guide the valve core to switch between the open and closed positions.

[0014] In the closed position, the outer wall of the opening and closing coupling cylinder abuts against the inner wall of the valve port to block the valve port and prevent fluid from flowing in the first direction; when the fluid flows in the second direction opposite to the first direction, the fluid pushes the valve core to the open position, compresses the elastic element, and creates a gap between the outer wall of the opening and closing coupling cylinder and the inner wall of the valve port, so that the fluid flows through the valve port in the second direction.

[0015] In one embodiment of this utility model, the opening and closing fitting cylinder includes a second end facing the valve port and a first end opposite to the second end facing the valve port. The opening and closing fitting cylinder is configured as a conical cylinder, and the outer diameter of the second end of the opening and closing fitting cylinder is smaller than the outer diameter of the first end of the opening and closing fitting cylinder. The sliding cylinder is configured as a straight cylinder, and one end of the sliding cylinder is connected to the first end of the opening and closing fitting cylinder.

[0016] Furthermore, one end of the valve port is formed with a tapered hole that mates with the tapered outer wall of the opening and closing coupling cylinder. In the closed position, the tapered outer wall of the opening and closing coupling cylinder and the inner wall of the tapered hole are in contact with each other.

[0017] Furthermore, the outer wall of the opening and closing cylinder is provided with a plurality of through holes, which are circumferentially distributed around the axis of the opening and closing cylinder.

[0018] Furthermore, when the valve core blocks the valve port, the second end of the elastic element forms a gap with the valve core.

[0019] Furthermore, the elastic element is configured as a conical spring, with the larger diameter end of the conical spring forming the first end of the elastic element, and the second end of the conical spring connected to the valve core.

[0020] Furthermore, the protrusion is formed by narrowing the valve seat.

[0021] Furthermore, the valve seat is welded and fixed inside the liquid flow channel.

[0022] The second aspect of this utility model discloses an air conditioner, which includes a first pipeline and a second pipeline. The air conditioner also includes a one-way valve of the first aspect, wherein the valve seat of the one-way valve is installed between the first pipeline and the second pipeline, and the liquid flow channel is connected to the inner cavity of the first pipeline and the inner cavity of the second pipeline.

[0023] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but this is not intended to limit the technical solution of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] Figure 1 This is a cross-sectional view of a one-way valve according to one embodiment of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a structural diagram of the valve core according to one embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the one-way valve in the open state according to one embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram showing the welding flux being blocked by a protrusion when the one-way valve of this utility model is welded to an external pipe fitting.

[0030] Figure 6 This is a schematic diagram showing the welding flux being blocked by the first end of the elastic element when the one-way valve of this utility model is welded to an external pipe fitting.

[0031] Figure 7 This is a cross-sectional view of a one-way valve according to one embodiment of the present invention (the elastic element is not connected to the valve core).

[0032] in,

[0033] 10. Valve seat; 11. First pipe body; 12. Second pipe body; 13. Tapered pipe; 14. Protrusion;

[0034] 20. Valve core; 21. Sliding cylinder; 22. Opening and closing fitting cylinder; 23. Through hole;

[0035] 30. Valve seat; 31. Valve port;

[0036] 40. Elastic element; 41. First end of the elastic element;

[0037] 50. External pipe fittings;

[0038] 60. Welding fluid. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0040] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in an embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0041] When using a check valve, it needs to be pre-assembled with some components. During the pre-assembly process, the valve core is usually welded to the external pipe. In actual operation, the assembly process of the valve seat is now generally achieved by automatic welding in a tunnel furnace. Tunnel furnace welding can ensure the uniformity of the overall temperature of the parts during the welding process, and can weld a large number of parts at once, thereby ensuring welding quality and efficiency.

[0042] In tunnel furnace welding, solder paste is pre-placed on the area to be welded, and then the workpiece is placed in the tunnel furnace for automatic heating. The solder paste melts at high temperature and evenly wets the welding area. During the welding process in the tunnel furnace, the one-way valve is generally placed in a horizontal position. After the solder paste melts, the solder flows along the inner wall of the valve seat. If the solder flows to the movable valve core position, it will cause the valve core to be fixed to the inner wall of the valve seat, making the valve core unable to move. In addition, even if the solder does not fix the valve core and only stays on the inner wall of the valve seat, it can easily affect the sliding of the valve core after it solidifies.

[0043] Based on this, one embodiment of the present invention discloses a one-way valve, see attached document. Figure 1 , 2 The valve includes a valve seat 10, a valve core 20, and a valve port seat 30. The valve seat 10 has a fluid flow channel, the valve core 20 is slidably disposed within the fluid flow channel, the valve port seat 30 is disposed within the fluid flow channel, and a valve port 31 is provided on the valve port seat 30. One end of the valve core 20 is opposite to the valve port 31.

[0044] The outer wall of the valve core 20 slides against the inner wall of the liquid flow channel;

[0045] An annular protrusion 14 is formed on the inner wall of the liquid flow channel. The protrusion 14 and the valve core 20 are spaced apart, and the protrusion 14 is closer to the opening of the liquid flow channel than the valve core 20.

[0046] The one-way valve also includes an elastic element 40, which is disposed between the protrusion 14 and the valve core 20; the first end 41 of both the protrusion 14 and the elastic element 40 protrudes from the surface of the fluid flow channel and the valve core 20, and are spaced apart.

[0047] The one-way valve in this embodiment allows fluid to flow in one direction within the fluid flow channel. During use, the valve core 20 switches between an open position and a closed position. In the closed position, one end of the valve core 20 abuts against the inner wall of the valve port 31, sealing the port and preventing fluid flow in the first direction. (See attached diagram.) Figure 1 As shown, the first direction is from right to left; the fluid flows along the second direction (the direction opposite to the first direction, i.e., ...). Figure 4 When the fluid moves from left to right, it pushes the valve core 20 to slide to the right, thereby opening the valve port 31 and realizing the unidirectional flow of fluid in the liquid flow channel.

[0048] The elastic element 40 of this application holds the valve core 20 in the closed position by storing its own force. Therefore, during production, by setting an appropriate pre-compression amount of the elastic element 40, the one-way valve can be controlled under what fluid pressure it is opened. That is, the fluid pressure needs to be greater than the pressure applied by the elastic element 40 to the valve core 20.

[0049] Of course, the main function of the elastic element 40 in this embodiment is not to control the flow pressure of the fluid, but it can also make the movement of the valve core 20 more stable.

[0050] In this embodiment, the outer wall of the valve core 20 is directly circumferentially slidably attached to the inner wall of the valve seat 10. The inner wall of the valve seat 10 limits the circumferential movement of the valve core 20. Compared with the existing connection structure that uses a thinner guide rod to achieve the sliding of the valve core 20, the movement of the valve core 20 in this embodiment is more stable, avoiding the problem of jamming and inability to slide.

[0051] However, since the outer wall of the valve core 20 is directly attached to the inner wall of the valve seat 10, the aforementioned problem of being affected by welding of other components is inevitable.

[0052] Furthermore, it should be noted that the outer wall of the valve core 20 and the inner wall of the valve seat 10 mentioned in this utility model are in contact with each other, which does not mean that they need to be completely in circumferential contact. For example, in actual installation, circumferentially spaced grooves can be provided on the outer wall of the valve core 20 or the inner wall of the valve seat 10. This can reduce the contact area between the outer wall of the valve core 20 and the inner wall of the valve seat 10, reduce the friction during the sliding process of the valve core 20, and make the sliding of the valve core 20 in the valve seat 10 smoother.

[0053] This application provides a protrusion 14 on the inner wall of the valve seat 10. When the one-way valve is welded to the external pipe 50, the protrusion 14 can, on the one hand, position the external pipe 50 inserted into the valve seat 10, and on the other hand, prevent the welding liquid 60 from flowing along the inner wall of the valve seat 10 to the valve core 20, thus avoiding the valve core 20 being fixed by the welding liquid 60 and unable to move, or the welding liquid 60 solidifying on the inner wall of the valve seat 10 and affecting the sliding of the valve core 20. Moreover, through the installation structure of the elastic element 40, it and the protrusion 14 form a two-layer protective barrier effect, further reducing the impact of the welding liquid 60 on the movement of the valve core 20.

[0054] In this embodiment, the specific structure of the protrusion 14 is not specifically limited. In actual setting, the cross-section of the protrusion 14 can be set as square, circular, triangular or other irregular structure.

[0055] This embodiment does not specifically limit the height of the protrusion 14, as long as it can block the flow of welding fluid 60. In actual installation, since the protrusion 14 can also position the external pipe 50, the height H of the protrusion 14 can generally be set between 0.5mm and 1.5mm (applicable to one-way valves with a valve seat 10 diameter of about 10mm). However, it should be noted that the height of the protrusion 14 can be adjusted according to the diameter of the valve seat 10. For example, when the valve seat 10 diameter is large, the height of the protrusion 14 can be increased accordingly (greater than 1.5mm), and when the valve seat 10 diameter is small, the height of the protrusion 14 can be decreased accordingly (less than 0.5mm).

[0056] In this embodiment, the first end 41 of the elastic element 40 abuts against the inner wall of the valve seat 10, and also forms a protruding structure on the inner wall of the valve seat 10. In actual use, the first end 41 of the annular elastic element and the protrusion 14 are spaced apart, as shown in the attached figure. Figure 6As shown, in actual use, even if the solder 60 exceeds the protrusion 14, the solder 60 will be blocked by the first end 41 of the elastic element 40. In this way, the first end 41 of the elastic element and the protrusion 14 form a multi-level blocking structure for the solder 60, which can better prevent the solder 60 from reaching the position of the valve core 20.

[0057] In this embodiment, the specific structure of the elastic element 40 is not specifically limited. In actual installation, the elastic element 40 can be set as a cylindrical spring, a conical spring, etc.

[0058] In this embodiment, the elastic element 40 can be fixed by the mutual compression between the valve core 20 and the inner wall of the valve seat 10 (by setting a certain compression amount for the elastic element 40). Alternatively, the first end 41 of the elastic element can be fixed to the inner wall of the valve seat 10 by welding. In this way, even if the welding liquid 60 flows to the position of the elastic element 40 and fixes the first end 41 of the elastic element, it will not affect the normal operation of the first end 41 of the elastic element and the valve core 20.

[0059] It should be noted that, in this embodiment, the elastic element 40 can be connected to the valve core 20 during actual installation (see Appendix). Figure 1 It can also be disconnected from valve core 20 (see appendix). Figure 7 When the elastic element 40 is not connected to the valve core 20, during the welding process, it is convenient for the valve core 20 to open the valve port (the valve core 20 can open the valve port under its own weight by simply tilting the one-way valve slightly), ensuring the air pressure balance in the valve seat 10, which is helpful for the welding process.

[0060] It should be noted that this embodiment does not specify how the protrusion 14 is formed inside the pipe. In actual installation, the protrusion 14 can be formed by welding an annular structure to the inner wall of the valve seat 10, or it can be formed from the side wall of the valve seat through a necking process.

[0061] Since the outer wall of the valve core 20 in this embodiment is slidably attached to the inner wall of the valve seat 10, a channel for fluid to pass through needs to be provided on the valve core 20. This embodiment does not specifically limit the position and form of the channel. In actual setting, it is only necessary to ensure that the fluid can pass through the valve core 20 after the valve port 31 is opened.

[0062] As attached Figure 5 As shown in the attached diagram, this embodiment illustrates the effect of the one-way valve in the production process where the welding liquid 60 is individually blocked by the protrusion 14. Figure 6 The diagram shows the solder 60 being blocked by the protrusion 14 and the first end 41 of the elastic member. It can be seen that the protrusion 14 and the first end 41 of the elastic member have a dual blocking effect on the solder 60.

[0063] As one embodiment of this utility model, see the appendix. Figure 1 The valve seat 10 includes a first tube 11, a second tube 12, and a tapered tube 13 connecting the first tube 11 and the second tube 12. The inner cavities of the first tube 11, the second tube 12, and the tapered tube 13 together form the fluid flow channel. The inner diameter of the first tube 11 is larger than the inner diameter of the second tube 12. The valve core 20 and the elastic element 40 are disposed inside the first tube 11. The first end 41 of the elastic element abuts against the inner wall of the tapered tube 13 circumferentially. The inner wall of the second tube 12 forms the protrusion 14.

[0064] In this embodiment, the valve seat 10 has a first tube 11 and a second tube 12 with different diameters, which facilitates docking with external pipes of different diameters. In this embodiment, the valve seat of the one-way valve has a tapered tube 13, which makes the installation of the elastic element 40 in the valve seat more stable.

[0065] In this embodiment, the structure of the tapered tube 13 allows the first end 41 of the elastic element 40 to better abut against the inner wall of the valve seat 10. The tapered surface structure can adaptively compensate for the structural errors of the elastic element 40 and the inner wall of the valve seat, which is more conducive to the first end 41 of the elastic element abutting against the inner wall of the valve seat in the circumferential direction, improving the stability of the installation of the elastic element 40 and better blocking the welding liquid 60 that crosses the protrusion 14.

[0066] It should be noted that in this embodiment, the first tube 11, the second tube 12, and the tapered tube 13 are integrally formed tube structures. In actual installation, the valve seat 10 can be formed into pipe sections with different diameters through processes such as narrowing or widening, which facilitates the placement of the valve core 20 and the elastic element 40 in pipes with different diameters and their connection with pipe fittings of different diameters.

[0067] It should be noted that in this embodiment, the height H of the protrusion 14 is the height between the protrusion 14 and the surface formed by the protrusion 14, not relative to the surface where the valve core 20 and the fluid flow channel meet. This is to adapt to the needs of different diameters. For example, when the protrusion 14 is formed on the inner wall of the first tube 11, the height H of the protrusion 14 is relative to the inner wall of the first tube 11. When the protrusion 14 is formed on the inner wall of the second tube 12, the height H of the protrusion 14 is relative to the inner wall of the second tube 12 (at this time, the height of the protrusion 14 protruding from the first tube 11 should be H and 1 / 2 of the difference between the two diameters).

[0068] As one embodiment of this utility model, see the appendix. Figure 1 , 3The valve core 20 is configured as a cylindrical shape with one end open and the other end closed. A sliding cylinder 21 is formed at one end of the opening of the valve core 20, and an opening and closing mating cylinder 22 is formed at the other end. The opening and closing mating cylinder 22 is opposite to the valve port 31. At least one through hole 23 communicating with the inner cavity of the valve core 20 is formed on the side wall of the opening and closing mating cylinder 22.

[0069] The outer wall of the sliding cylinder 21 slides against the inner wall of the liquid flow channel to guide the valve core 20 to switch between the open and closed positions.

[0070] In the closed position, the outer wall of the opening and closing coupling cylinder 22 abuts against the inner wall of the valve port 31 to block the valve port 31 and prevent fluid from flowing in the first direction; when the fluid flows in the second direction opposite to the first direction, the fluid pushes the valve core 20 to the open position, compresses the elastic element 40, and creates a gap between the outer wall of the opening and closing coupling cylinder 22 and the inner wall of the valve port 31, so that the fluid flows through the valve port 31 in the second direction.

[0071] Since the outer wall of the valve core 20 of this utility model is in close contact with the inner wall of the valve seat 10, if the valve core 20 is a solid structure, then the fluid will not be able to pass through the valve core 20.

[0072] In this embodiment, the valve core 20 is configured as a cylindrical structure, wherein one end of the cylindrical valve core 20 is open and the other end is a closing mechanism. For ease of description, the valve core 20 is divided into two parts according to different functions, wherein the open end is formed as a sliding cylinder 21 and the other end is formed as an opening and closing mating cylinder 22, as shown in the attached figure. Figure 3 As shown, the outer wall of the sliding cylinder 21 is slidably connected to the inner wall of the valve seat 10, and the opening and closing coupling cylinder 22 cooperates with the valve port 31 as the valve core 20 slides, so as to block or open the valve port 31.

[0073] In this embodiment, a through hole 23 is formed on the side wall of the opening and closing sleeve 22. The through hole 23 is connected to the cylindrical inner cavity of the valve core 20. In this way, after the valve core 20 opens the valve port 31, the fluid will pass through the through hole 23 and the cylindrical inner cavity of the valve core 20 to achieve flow in the liquid flow channel.

[0074] In this embodiment, the through hole 23 is formed on the side wall of the opening and closing fitting cylinder 22, as shown in the attached figure. Figure 4 As shown, after the valve core 20 opens the valve port 31, the direction of fluid flow changes as the fluid passes through the valve core 20. This slows down the fluid flow rate and reduces noise.

[0075] In addition, with the setting of the elastic element 40, when the fluid pushes the valve core 20 to slide, the spring will buffer the sliding of the valve core 20, and avoid the noise generated by the impact between the valve core 20 and the inner wall of the valve seat 10 under the impact of the fluid (without the elastic element 40, the valve core 20 may directly hit the tapered tube 13).

[0076] In this embodiment, when the elastic element 40 is connected to the valve core 20, it can be connected to the end of the sliding cylinder 21, or it can extend into the inner cavity of the valve core 20 and be connected to the inner wall of the valve core 20.

[0077] In this embodiment, the valve core 20 includes a sliding cylinder 21 and an opening and closing mating cylinder 22. In actual installation, the valve core 20 may also include other cylinder sections, such as the cylinder section connecting the sliding cylinder 21 and the opening and closing mating cylinder 22. Therefore, the overall structure of the valve core 20 can be set as a stepped cylinder structure. Generally, the outer diameter of the sliding cylinder 21 is the largest, and a gap is formed between the outer wall of the opening and closing mating cylinder 22 and the inner wall of the valve seat. This allows the fluid to pass through the through hole 23 on the opening and closing mating cylinder 22 and enter the inner cavity of the valve core 20, thereby allowing the fluid to flow through the valve core 20.

[0078] Of course, in some embodiments, the through hole 23 can also be opened on the bottom wall of the opening and closing sleeve 22. As long as the through hole 23 and the valve port 31 do not overlap in the axial direction, the valve port 31 can be blocked by the bottom wall of the valve core 20, which can also achieve the effect of allowing the fluid to flow in one direction.

[0079] As one embodiment of this utility model, see the appendix. Figure 3 The opening and closing fitting cylinder 22 includes a second end facing the valve port 31 and a first end opposite to the second end. The opening and closing fitting cylinder 22 is formed as a cone with the outer diameter of the second end being smaller than the outer diameter of the first end. The sliding cylinder 21 is configured as a straight cylinder, and one end of the sliding cylinder 21 is connected to the large diameter end of the opening and closing fitting cylinder 22.

[0080] In this embodiment, the valve core 20 is directly connected to the straight section of the sliding cylinder 21 and the conical opening and closing fitting cylinder 22. The outer wall of the conical opening and closing fitting cylinder 22 forms a gap with the inner wall of the valve seat, which facilitates the passage of fluid and makes the overall structure simpler.

[0081] In one embodiment of this utility model, one end of the valve port 31 is formed with a tapered hole that mates with the tapered outer wall of the opening and closing fitting cylinder 22. In the closed position, the tapered outer wall of the opening and closing fitting cylinder 22 and the inner wall of the tapered hole are in contact with each other.

[0082] In this embodiment, the interlocking of the conical surfaces allows for a better sealing effect of the valve core 20 on the valve port 31. Furthermore, during use, the conical mating structure also guides the movement of the valve core 20, preventing issues such as incomplete sealing that may result from increased clearance at the mating parts after prolonged use.

[0083] As one embodiment of this utility model, see the appendix. Figure 3 The outer wall of the opening and closing fitting cylinder 22 is provided with a plurality of through holes 23, which are circumferentially distributed around the axis of the opening and closing fitting cylinder 22.

[0084] In this embodiment, the through holes 23 can be set to two, three, four or more in actual settings. Multiple through holes 23 are evenly distributed around the circumference, so that when the fluid passes through, it can flow evenly around the valve core 20, making the fluid flow more stable, avoiding the occurrence of turbulence, and reducing noise.

[0085] As one embodiment of this utility model, see the appendix. Figure 1 , 4 The elastic element 40 is configured as a conical spring, with the large-diameter end of the conical spring forming the first end 41 of the elastic element, and the small-diameter end of the conical spring being connected to the valve core 20.

[0086] In this embodiment, the spring steel ring at the end of the conical spring is used as the first end 41 of the elastic element. Moreover, due to the structural characteristics of the spring itself, there is no need to set up a special part for fluid to pass through during use, making it convenient to use.

[0087] In addition, conical springs have a progressive spring constant, providing smoother cushioning and better resistance to deflection.

[0088] In one embodiment of the present invention, the protrusion 14 is formed by narrowing the valve seat 10.

[0089] The protrusion 14 structure formed by locking is an integral structure with the valve seat 10, so that the protrusion 14 and the valve seat 10 have better integrity and strength during use.

[0090] As one embodiment of this utility model, see the appendix. Figure 1 The one-way valve further includes a valve seat 30 disposed in the liquid flow channel, the valve seat 30 being welded and fixed in the liquid flow channel, and the valve port 31 being formed on the valve seat 30.

[0091] The one-way valve in this embodiment includes a cylindrical valve seat 30. The valve seat 30 is installed into the liquid flow channel by assembly. In actual production, the outer wall of the valve seat 30 and the inner wall of the valve seat 10 can be welded together by laser sealing welding.

[0092] The second aspect of this utility model discloses an air conditioner, which includes a first pipeline and a second pipeline. The air conditioner also includes a one-way valve of the first aspect. The valve seat 10 of the one-way valve is installed between the first pipeline and the second pipeline, and the liquid flow channel is connected to the inner cavity of the first pipeline and the inner cavity of the second pipeline.

[0093] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A one-way valve, comprising a valve seat (10), a valve core (20), and a valve port seat (30), wherein the valve seat (10) has a fluid flow channel, the valve core (20) is slidably disposed within the fluid flow channel, the valve port seat (30) is fixedly disposed within the fluid flow channel, and a valve port (31) is provided on the valve port seat (30), one end of the valve core (20) being opposite to the valve port (31), characterized in that, The outer wall of the valve core (20) slides against the inner wall of the liquid flow channel; An annular protrusion (14) is formed on the inner wall of the liquid flow channel. The protrusion (14) and the valve core (20) are spaced apart, and the protrusion (14) is closer to the opening of the liquid flow channel than the valve core (20). The one-way valve also includes an elastic element (40), which is disposed between the protrusion (14) and the valve core (20). The first end (41) of the elastic element (40) abuts against the inner wall of the liquid flow channel in the circumferential direction. The first end (41) of both the protrusion (14) and the elastic element (40) protrude from the surface of the liquid flow channel and the valve core (20) that slide against each other, and are spaced apart.

2. The one-way valve according to claim 1, characterized in that, The valve seat (10) includes a first tube (11), a second tube (12), and a tapered tube (13) connecting the first tube (11) and the second tube (12). The fluid flow channel passes through the first tube (11), the second tube (12), and the tapered tube (13). The inner diameter of the first tube (11) is larger than the inner diameter of the second tube (12). The valve core (20) and the elastic element (40) are disposed inside the first tube (11). The first end (41) of the elastic element (40) abuts against the inner wall of the tapered tube (13) circumferentially. The inner wall of the second tube (12) forms the protrusion (14).

3. The one-way valve according to claim 2, characterized in that, The protrusion (14) protrudes from the inner wall of the second tube (12) at a height between 0.5 mm and 1.5 mm.

4. The one-way valve according to claim 1, characterized in that, The valve core (20) is configured as a cylindrical shape with one end open and the other end closed. A sliding cylinder (21) is formed at one end of the opening of the valve core (20), and an opening and closing mating cylinder (22) is formed at the other end. The opening and closing mating cylinder (22) is opposite to the valve port (31). At least one through hole (23) communicating with the inner cavity of the valve core (20) is formed on the side wall of the opening and closing mating cylinder (22). The outer wall of the sliding cylinder (21) slides against the inner wall of the liquid flow channel to guide the valve core (20) to switch between the open and closed positions; In the closed position, the outer wall of the opening and closing coupling cylinder (22) abuts against the inner wall of the valve port (31) to block the valve port (31) and prevent the fluid from flowing in the first direction; when the fluid flows in the second direction opposite to the first direction, the fluid pushes the valve core (20) to the open position, compresses the elastic element (40), and creates a gap between the outer wall of the opening and closing coupling cylinder (22) and the inner wall of the valve port (31) so that the fluid flows through the valve port (31) in the second direction.

5. The one-way valve according to claim 4, characterized in that, The opening and closing fitting cylinder (22) includes a second end facing the valve port (31) and a first end opposite to the second end facing the valve port (31). The opening and closing fitting cylinder (22) is configured as a conical cylinder, and the outer diameter of the second end of the opening and closing fitting cylinder (22) is smaller than the outer diameter of the first end of the opening and closing fitting cylinder (22). The sliding cylinder (21) is configured as a straight cylinder, and one end of the sliding cylinder (21) is connected to the first end of the opening and closing fitting cylinder (22). A plurality of through holes (23) are provided on the outer wall of the opening and closing fitting cylinder (22), and the plurality of through holes (23) are circumferentially distributed around the axis of the opening and closing fitting cylinder (22).

6. The one-way valve according to claim 5, characterized in that, One end of the valve port (31) is formed with a tapered hole that mates with the tapered outer wall of the opening and closing fitting cylinder (22). In the closed position, the tapered outer wall of the opening and closing fitting cylinder (22) and the inner wall of the tapered hole are in contact with each other.

7. The one-way valve according to any one of claims 1 to 6, characterized in that, When the valve core (20) blocks the valve port (31), a gap is formed between the second end of the elastic element (40) and the valve core (20).

8. The one-way valve according to any one of claims 1 to 6, characterized in that, The elastic element (40) is configured as a conical spring, with the large-diameter end of the conical spring forming the first end (41) of the elastic element (40), and the second end of the conical spring being connected to the valve core (20).

9. The one-way valve according to any one of claims 1 to 6, characterized in that, The constriction of the pipe wall of the valve seat (10) forms the protrusion (14).

10. An air conditioner, the air conditioner comprising a first pipe and a second pipe, characterized in that, The air conditioner further includes a one-way valve as described in any one of claims 1 to 9, wherein the valve seat (10) of the one-way valve is installed between the first pipe and the second pipe, and the liquid flow passage is connected to the inner cavity of the first pipe and the inner cavity of the second pipe.

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