Check valve component, flow path switching assembly, heat exchanger, air conditioning system and air conditioner

Abstract

The utility model discloses a one-way valve part, flow path switching subassembly, heat exchanger, air conditioning system and air conditioner, one-way valve part includes: one-way valve, first pipe section and second pipe section. One-way valve includes first casing, second casing and valve core, and first casing and second casing are directly welded and are connected and are limited to one-way flow channel, is equipped with the export on first casing, is equipped with the import on second casing, and the valve core is located in one-way flow channel, and one-way valve is by import to export one-way conduction, first pipe section one end is connected in the export place, and first pipe section is connected with first casing through first soldering material and is welded, and second pipe section one end is connected in the import place, and second pipe section is connected with second casing through second soldering material and is welded. According to the one-way valve part of the utility model, the quality and the yield of one-way valve part are high, and production efficiency is high and cost is low.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and in particular to a one-way valve component, a flow path switching assembly, a heat exchanger, an air conditioning system, and an air conditioner. Background Technology

[0002] In related technologies, when welding check valves to pipelines, a common practice is to wrap the check valve with a damp towel or similar cooling method to prevent the internal valve seat and valve core from overheating, thus protecting them during welding. However, due to the complex and error-prone manufacturing process of check valves, the valve core still faces the risk of deformation due to high temperatures, especially when the valve core is made of non-metallic materials such as plastic, which severely impacts the yield rate of the check valve. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a one-way valve component, which features high quality and yield, high production efficiency, and low cost.

[0004] This utility model also proposes a flow path switching component, which includes the aforementioned one-way valve component.

[0005] This utility model also proposes a heat exchanger, wherein the flow path switching component includes the flow path switching component described above.

[0006] This utility model also proposes an air conditioning system, which includes the above-mentioned flow path switching component or the above-mentioned heat exchanger.

[0007] This utility model also proposes an air conditioner, which includes the above-mentioned air conditioning system.

[0008] A one-way valve component according to an embodiment of the present invention includes: a one-way valve, a first pipe section, and a second pipe section. The one-way valve includes a first housing, a second housing, and a valve core. The first housing and the second housing are directly welded together and define a one-way flow channel. The first housing has an outlet, and the second housing has an inlet. The valve core is disposed within the one-way flow channel, and the one-way valve allows unidirectional flow from the inlet to the outlet. One end of the first pipe section is connected to the outlet, and the first pipe section is welded to the first housing using a first solder. One end of the second pipe section is connected to the inlet, and the second pipe section is welded to the second housing using a second solder.

[0009] According to the embodiments of the present invention, the one-way valve component, by welding the first pipe section to the first housing with a first solder and the second pipe section to the second housing with a second solder, facilitates batch welding in a tunnel furnace, significantly improving production efficiency and reducing costs. By directly welding the first and second housings together and defining a one-way flow channel, with the valve core positioned within the channel, the one-way valve allows unidirectional flow from inlet to outlet, effectively reducing welding temperature and preventing high-temperature deformation of the valve core during welding, thereby improving the quality and yield of the one-way valve component. Furthermore, the welding process of the first and second housings eliminates the need for cooling methods such as wrapping the one-way valve with a wet towel, further improving production efficiency. It also eliminates the need to lengthen or enlarge the one-way valve for wrapping with a wet towel, effectively shortening its length and size, resulting in a more compact structure and reduced space occupation.

[0010] According to some embodiments of the present invention, the first pipe segment is inserted into the first housing or the first housing is inserted into the first pipe segment; and / or, the first solder is located on at least one of the following: the end face of the first pipe segment connected to the outlet, the end face of the first housing opposite to the second housing, between the outer peripheral surface of the first pipe segment and the inner peripheral surface of the first housing, and between the inner peripheral surface of the first pipe segment and the outer peripheral surface of the first housing.

[0011] According to some embodiments of the present invention, the second pipe segment is inserted into the second housing or the second housing is inserted into the second pipe segment; and / or, the second solder is located on at least one of the following: the end face of the second pipe segment connected to the inlet, the end face of the second housing opposite to the first housing, between the outer peripheral surface of the second pipe segment and the inner peripheral surface of the second housing, and between the inner peripheral surface of the second pipe segment and the outer peripheral surface of the second housing.

[0012] According to some embodiments of the present invention, the end face of the first housing opposite to the first pipe section and the end face of the second housing opposite to the second pipe section are directly welded together.

[0013] In some embodiments of this utility model, the diameter of the connection between the first housing and the second housing is the same as the diameter of the connection between the second housing and the first housing; and / or the outer surface of the first housing is flush with the outer surface of the second housing.

[0014] In some embodiments of this utility model, the maximum wall thickness of the valve core is T1, where T1 ≤ 1 mm; and / or the minimum wall thickness of the valve core is T2, where 0.1 mm ≤ T2 ≤ 1 mm.

[0015] In some embodiments of this utility model, the first housing and the second housing are both made of stainless steel; and / or the first pipe section is made of at least one of stainless steel, brass and copper; and / or the second pipe section is made of at least one of stainless steel, brass and copper.

[0016] In some embodiments of this utility model, the width of the weld formed between the first housing and the second housing is W, where W≤0.3mm.

[0017] In some embodiments of this utility model, the minimum distance between the first welding point of the first pipe segment and the first housing and the center of the weld is D1, where D1≥5×W or D1≥3mm; and / or the minimum distance between the second welding point of the second pipe segment and the second housing and the center of the weld is D2, where D2≥5×W or D2≥3mm.

[0018] In some embodiments of this utility model, when the one-way valve is turned on, the minimum distance between the weld and the valve core is D3, where D3≥10×W or D3≥6mm.

[0019] In some embodiments of this utility model, the welding temperature for welding the first housing and the second housing is greater than the melting point temperature of the first solder; and / or the first housing and the second housing are made of the same material, and the melting point temperature of the first housing is greater than the melting point temperature of the first solder; and / or the welding temperature for welding the first housing and the second housing is greater than the melting point temperature of the second solder; and / or the first housing and the second housing are made of the same material, and the melting point temperature of the first housing is greater than the melting point temperature of the second solder.

[0020] In some embodiments of this utility model, the minimum wall thickness at the connection between the first housing and the second housing is T3, 0.1mm≤T3≤1mm; and / or the minimum wall thickness at the connection between the second housing and the first housing is T4, 0.1mm≤T4≤1mm.

[0021] In some embodiments of this utility model, the second housing is formed with a valve port, the valve port is connected to the inlet, and the valve core includes a sealing end, which can cooperate with the valve port to seal the valve port.

[0022] In some embodiments of this utility model, a limiting portion is formed at the end of the first housing away from the sealing end, and the valve core further includes a limiting end opposite to the sealing end. The limiting end can abut against the limiting portion to restrict the movement of the valve core and open the valve port.

[0023] In some embodiments of this utility model, the valve core includes a cylindrical portion and a conical portion, the sealing end is formed in the conical portion, the limiting end is formed in the cylindrical portion, and both the cylindrical portion and the conical portion have cavities.

[0024] In some embodiments of this utility model, the maximum wall thickness of the cylindrical portion is less than or equal to 1 mm.

[0025] The flow path switching component according to an embodiment of the present invention includes: the one-way valve component described above.

[0026] According to the flow path switching assembly of this utility model embodiment, by welding the first pipe section to the first housing with a first solder and the second pipe section to the second housing with a second solder, batch welding can be easily completed in a tunnel furnace, significantly improving production efficiency and reducing costs. By directly welding the first and second housings together and defining a unidirectional flow channel, with the valve core located within the unidirectional flow channel, and the unidirectional valve flowing unidirectionally from the inlet to the outlet, the welding temperature can be effectively reduced, preventing the valve core from deforming due to high temperatures during welding, thereby effectively improving the quality and yield of the flow path switching assembly. Furthermore, the welding process of the first and second housings eliminates the need for cooling methods such as wrapping the unidirectional valve with a wet towel, contributing to improved production efficiency. It also eliminates the need to lengthen or enlarge the unidirectional valve for wrapping with a wet towel, effectively shortening the length and size of the unidirectional valve, making its structure more compact and reducing its space occupation.

[0027] In some embodiments of this utility model, the first pipe segment is a manifold of a heat exchanger, and the first pipe segment has a first connecting hole. The first connecting hole is one or a plurality of holes spaced apart along the length of the first pipe segment. The first connecting hole is used to communicate with the heat exchanger. Alternatively, the flow path switching component further includes a flow divider, which includes a manifold and at least two branch ports. One end of the first pipe segment is connected to the first housing, the first pipe segment communicates with the manifold, and the branch ports are used to communicate with the heat exchanger.

[0028] In some embodiments of this utility model, the second pipe section is the manifold of a heat exchanger, and the second pipe section has a second connecting hole. The second connecting hole is one or a plurality of holes spaced apart along the length of the second pipe section, and the second connecting hole is used to communicate with the heat exchanger.

[0029] In some embodiments of this utility model, the first housing, the second housing, the first pipe section, and the second pipe section are stainless steel components.

[0030] In some embodiments of this utility model, the inner diameter of the first pipe segment is greater than or equal to the inner diameter of the second pipe segment.

[0031] In some embodiments of this utility model, at least one first branch pipe is connected to the first connecting hole, the first branch pipe being an aluminum pipe or a copper pipe; and / or, at least one second branch pipe is connected to the second connecting hole, the second branch pipe being an aluminum pipe or a copper pipe.

[0032] In some embodiments of this utility model, the inner diameter of the second branch pipe is less than or equal to the inner diameter of the first branch pipe, and the number of the first branch pipes is greater than the number of the second branch pipes.

[0033] In some embodiments of the present invention, the first pipe segment further has a first port, with one end of the first pipe segment facing away from the first housing open to form the first port; or, the first pipe segment further has a first port, with the first port disposed on the peripheral wall of the first pipe segment; and / or, the first pipe segment further has a first port, and the flow path switching component further includes an air inlet pipe, one end of which is connected to the first port.

[0034] In some embodiments of this utility model, the one-way valve component is multiple and includes a first one-way valve component, a second one-way valve component, a third one-way valve component, and a fourth one-way valve component. The first one-way valve component, the second one-way valve component, the third one-way valve component, and the fourth one-way valve component are sequentially connected in a ring. The first one-way valve component and the second one-way valve component have a first interface, the second one-way valve component and the third one-way valve component have a second interface, the third one-way valve component and the fourth one-way valve component have a third interface, and the fourth one-way valve component and the first one-way valve component have a fourth interface. The first interface is unidirectionally connected to the fourth interface, the second interface is unidirectionally connected to the first interface, the second interface is unidirectionally connected to the third interface, and the third interface is unidirectionally connected to the fourth interface.

[0035] In some embodiments of this utility model, the second pipe segment of the first one-way valve component and the first pipe segment of the second one-way valve component are integral parts; and / or, the first pipe segment of the third one-way valve component and the second pipe segment of the fourth one-way valve component are integral parts; and / or, the first pipe segment of the first one-way valve component and the first pipe segment of the fourth one-way valve component are connected by a first tee pipe, and one interface of the first tee pipe is formed as the fourth interface; and / or, the second pipe segment of the second one-way valve component and the second pipe segment of the third one-way valve component are connected by a second tee pipe, and one interface of the second tee pipe is formed as the second interface.

[0036] In some embodiments of this utility model, the one-way valve is made of stainless steel, and the first pipe section, the second pipe section, the first tee pipe and the second tee pipe are made of copper.

[0037] The heat exchanger according to an embodiment of the present invention includes: the flow path switching component and the heat transfer tube described above, wherein the flow path switching component is connected to the heat transfer tube.

[0038] According to the heat exchanger of this utility model embodiment, by welding the first tube section to the first shell using a first solder and the second tube section to the second shell using a second solder, batch welding can be easily completed in a tunnel furnace, significantly improving production efficiency and reducing costs. By directly welding the first and second shells together and defining a unidirectional flow channel, with the valve core located within the unidirectional flow channel, and the unidirectional valve flowing unidirectionally from the inlet to the outlet, the welding temperature can be effectively reduced, preventing the valve core from deforming due to high temperatures during welding, thereby effectively improving the quality and yield of the flow path switching component. Furthermore, the welding process of the first and second shells eliminates the need for cooling methods such as wrapping the unidirectional valve with a wet towel, contributing to improved production efficiency. It also eliminates the need to lengthen or enlarge the unidirectional valve for wrapping with a wet towel, effectively shortening its length and size, making the unidirectional valve structure more compact and reducing its space occupation.

[0039] An air conditioning system according to an embodiment of the present invention includes: the flow path switching component described above or the heat exchanger described above.

[0040] According to the air conditioning system of this utility model embodiment, by welding the first pipe section to the first housing with a first solder and the second pipe section to the second housing with a second solder, batch welding can be easily completed in a tunnel furnace, which can significantly improve production efficiency and reduce costs. By directly welding the first and second housings together and defining a one-way flow channel, with the valve core located within the one-way flow channel, the one-way valve can unidirectionally flow from the inlet to the outlet, effectively reducing the welding temperature and preventing the valve core from deforming due to high temperatures during welding, thereby effectively improving the quality and yield of the flow path switching components. In addition, the welding process of the first and second housings no longer requires cooling methods such as wrapping the one-way valve with a wet towel, which helps to improve production efficiency. Furthermore, there is no need to lengthen or enlarge the one-way valve to wrap it with a wet towel, effectively shortening the length and size of the one-way valve, making its structure more compact and reducing its space occupation.

[0041] An air conditioner according to an embodiment of the present invention includes: the air conditioning system described above.

[0042] According to the embodiment of this utility model, the air conditioner connects the first pipe section to the first housing by welding with a first solder, and the second pipe section to the second housing by welding with a second solder. This facilitates batch welding in a tunnel furnace, significantly improving production efficiency and reducing costs. By directly welding the first and second housings together and defining a one-way flow channel, with the valve core located within the one-way flow channel, the one-way valve allows unidirectional flow from the inlet to the outlet, effectively reducing welding temperature and preventing high-temperature deformation of the valve core during welding. This effectively improves the quality and yield of the flow path switching components. Furthermore, the welding process of the first and second housings eliminates the need for cooling methods such as wrapping the one-way valve with a wet towel, further improving production efficiency. It also eliminates the need to lengthen or enlarge the one-way valve for wrapping with a wet towel, effectively shortening its length and size, resulting in a more compact structure and reduced space occupation.

[0043] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0044] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the flow path switching component according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the flow path switching component according to an embodiment of the present utility model, wherein the first housing and the second housing are exploded apart; Figure 3 This is an exploded view of the flow path switching component according to an embodiment of the present utility model; Figure 4 This is an exploded view of the one-way valve of the one-way valve component of the flow path switching assembly according to an embodiment of the present utility model; Figure 5 This is a cross-sectional view of a one-way valve component of a flow path switching assembly according to an embodiment of the present utility model, wherein the valve core blocks the valve port; Figure 6 This is a cross-sectional view of a one-way valve component of a flow path switching assembly according to an embodiment of the present utility model, wherein the valve core opens the valve port; Figure 7 This is a schematic diagram of the flow path switching component according to another embodiment of the present invention; Figure 8 This is a cross-sectional view of a flow path switching component according to another embodiment of the present invention; Figure 9 This is a schematic diagram of the flow path switching component according to another embodiment of the present invention, wherein the first housing and the second housing are separated.

[0045] Figure label: 100. One-way valve components; 10. Part One; 20. Part Two; 1. One-way valve; 11. First housing; 111. Outlet; 112. Limiting part; 12. Second housing; 121. Inlet; 122. Valve port; 13. Valve core; 131. Sealing end; 132. Limiting end; 133. Cylindrical part; 134. Conical part; 135. Cavity; 14. One-way flow channel; 2. First pipe section; 21. First solder; 22. First port; 23. First connecting hole; 3. Second pipe section; 31. Second solder; 32. Second connecting hole; 200. Flow path switching component; 41. First branch pipe; 42. Second branch pipe; 43. Intake pipe; 51. First check valve component; 52. Second check valve component; 53. Third check valve component; 54. Fourth check valve component; 55. First tee pipe; 56. Second tee pipe; 61. First interface; 62. Second interface; 63. Third interface; 64. Fourth interface. Detailed Implementation

[0046] 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 below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0047] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0048] The one-way valve component 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0049] like Figure 1 , Figure 2 and Figure 3 As shown, the one-way valve component 100 according to an embodiment of the present utility model includes a one-way valve 1, a first pipe section 2, and a second pipe section 3.

[0050] Specifically, such as Figures 1-4 As shown, the one-way valve 1 includes a first housing 11, a second housing 12, and a valve core 13. The first housing 11 and the second housing 12 are directly welded together, defining a one-way flow channel 14. The first housing 11 has an outlet 111, and the second housing 12 has an inlet 121. The valve core 13 is located within the one-way flow channel 14, and the one-way valve 1 allows unidirectional flow from the inlet 121 to the outlet 111. One end of the first pipe section 2 is connected to the outlet 111, and the first pipe section 2 is welded to the first housing 11 using a first solder 21. One end of the second pipe section 3 is connected to the inlet 121, and the second pipe section 3 is welded to the second housing 12 using a second solder 31.

[0051] refer to Figure 5 As shown in the example, the one-way valve 1 only allows the medium to flow from the inlet 121 to the outlet 111. When the first housing 11 is connected to the second housing 12, the valve core 13 is confined within the one-way flow channel 14. The valve core 13 is movable within the one-way flow channel 14. When the medium flows in from the inlet 121, the valve core 13 moves to a distance from the second housing 12 to open the one-way flow channel 14, thus realizing the one-way flow function of the one-way valve 1; when the medium enters from the outlet 111, the valve core 13 moves to abut against the second housing 12 to close the one-way flow channel 14, thus realizing the flow obstruction function of the one-way valve 1.

[0052] The direct welding connection of the first housing 11 and the second housing 12 can be understood as follows: the welding of the first housing 11 and the second housing 12 does not require solder. It only requires melting at least one of the junction or adjacent area between the first housing 11 and the second housing 12 and the junction or adjacent area between the second housing 11 and the first housing 11. The molten material connects the first housing 11 and the second housing 12. After cooling, the molten material directly welds the first housing 11 and the second housing 12 together, thereby achieving a direct welding connection.

[0053] In existing assembly processes for check valves and pipelines, the check valve is first assembled as a single unit, and then welded to the pipeline. During welding, a cooling method, such as wrapping the check valve with a damp towel, is typically used to prevent the internal valve seat and core from overheating, thus protecting them during welding. However, despite this, the valve core still faces the risk of deformation due to high temperatures, especially when it is made of non-metallic materials such as plastic. Furthermore, to better reduce heat conduction by wrapping it with a damp towel, the valve body needs to be relatively large or long, resulting in an excessively large valve body size.

[0054] During the assembly process of the one-way valve component 100 of this application, reference is made to... Figure 2 As shown in the example, the first pipe section 2 is first connected to the outlet 111 of the first housing 11 to form the first part 10, and the second pipe section 3 is connected to the inlet 121 of the second housing 12 to form the second part 20. Then, the first housing 11 in the first part 10 and the second housing 12 in the second part 20 are connected together, while the valve core 13 is confined in the one-way flow channel 14 between the first housing 11 and the second housing 12, thereby realizing the one-way conduction and flow obstruction functions of the one-way valve component 100.

[0055] The first pipe section 2 is welded to the first shell 11 by the first solder 21, and the second pipe section 3 is welded to the second shell 12 by the second solder 31. That is, the first part 10 composed of the first pipe section 2 and the first shell 11 and the second part 20 composed of the second pipe section 3 and the second shell 12 can be welded in the tunnel furnace. Batch welding can be achieved in the tunnel furnace. The tunnel furnace can weld multiple weld points at the same time. That is, multiple first parts 10 and multiple second parts 20 can be welded at the same time in the tunnel furnace. Moreover, the tunnel furnace can produce continuously for 24 hours, which can greatly improve production efficiency and help reduce costs.

[0056] After the first pipe segment 2 is welded to the first housing 11 to form the first part 10, and the second pipe segment 3 is welded to the second housing 12 to form the second part 20, the first housing 11 in the first part 10 and the second housing 12 in the second part 20 are then connected together, wherein the first housing 11 and the second housing 12 are directly welded together. For example, the first housing 11 and the second housing 12 can be connected by laser welding, which has higher welding precision. The tunnel furnace welding process requires the entire component or the entire welding area to be at a high temperature and to be maintained for a long time in order for the solder to completely melt. However, the direct welding connection of the first housing 11 and the second housing 12 only requires a short period of local high temperature at the connection point of the first housing 11 and the second housing 12 to directly weld together the first housing 11 and the second housing 12. It is not necessary to heat the first housing 11 and the second housing 12 to a relatively high temperature, thereby reducing the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, avoiding the valve core 13 from being deformed by high temperature during the welding process, thereby effectively improving the quality and yield of the one-way valve component 100.

[0057] Furthermore, the welding process of the first housing 11 and the second housing 12 no longer requires cooling methods such as wrapping the check valve 1 with a wet towel, which helps to improve production efficiency. It also eliminates the need to lengthen or enlarge the check valve 1 for wrapping with a wet towel, effectively shortening the length and size of the check valve 1, making its structure more compact and reducing its space occupation.

[0058] According to the embodiment of the present invention, the one-way valve component 100 is welded to the first pipe section 2 and the first housing 11 by welding with the first solder 21, and to the second pipe section 3 and the second housing 12 by welding with the second solder 31. This facilitates batch welding in a tunnel furnace, significantly improving production efficiency and reducing costs. By directly welding the first housing 11 and the second housing 12 together and defining a one-way flow channel 14, with the valve core 13 disposed within the one-way flow channel 14, the one-way valve 1 flows unidirectionally from the inlet 121 to the outlet 111. This effectively reduces the welding temperature and prevents the valve core 13 from deforming due to high temperatures during welding, thereby effectively improving the quality and yield of the one-way valve component 100. Furthermore, the welding process of the first housing 11 and the second housing 12 eliminates the need for cooling methods such as wrapping the one-way valve 1 with a wet towel, which helps improve production efficiency. It also eliminates the need to lengthen or enlarge the one-way valve 1 for wrapping with a wet towel, effectively shortening the length and size of the one-way valve 1, making its structure more compact and reducing its space occupation.

[0059] In some embodiments of this utility model, the first pipe section 2 passes through the first housing 11 or the first housing 11 passes through the first pipe section 2, such as... Figure 5As shown in the example, one end of the first pipe segment 2 passes through the first housing 11. During assembly, fitting the first pipe segment 2 onto the first housing 11 improves mechanical strength and stability, facilitates rapid preliminary alignment of the first pipe segment 2 and the first housing 11 before welding, ensures the coaxiality of the first pipe segment 2 and the first housing 11, makes assembly and welding more convenient, and also increases the weld area and welding strength, thereby enhancing the connection stability between the first pipe segment 2 and the first housing 11.

[0060] In some embodiments of this utility model, the first solder 21 is located on at least one of the following: the end face of the first pipe section 2 connected to the outlet 111; the end face of the first housing 11 facing away from the second housing 12; between the outer peripheral surface of the first pipe section 2 and the inner peripheral surface of the first housing 11; and between the inner peripheral surface of the first pipe section 2 and the outer peripheral surface of the first housing 11. Figure 5 As shown in the example, the first solder 21 is located on the end face of the first housing 11 opposite to the second housing 12, as... Figure 6 As shown in the example, the first solder 21 is located on the end face of the first pipe section 2 connected to the outlet 111. Placing the first solder 21 on the end face of the first housing 11 or the first pipe section 2 is simple and convenient, effectively reducing the difficulty of welding operations and thus improving efficiency. Alternatively, the first solder 21 can be placed between the outer circumferential surface of the first pipe section 2 and the inner circumferential surface of the first housing 11, or between the inner circumferential surface of the first pipe section 2 and the outer circumferential surface of the first housing 11. This fills the annular gap between the walls of the first housing 11 and the first pipe section 2, which helps to improve the connection strength between the first pipe section 2 and the first housing 11, while also improving the sealing performance between the first housing 11 and the first pipe section 2.

[0061] In some embodiments of this utility model, the second pipe section 3 passes through the second housing 12, or the second housing 12 passes through the second pipe section 3. For example... Figure 5 As shown in the example, one end of the second pipe segment 3 passes through the second housing 12. During assembly, fitting the second pipe segment 3 onto the second housing 12 improves mechanical strength and stability, facilitates rapid preliminary alignment of the second pipe segment 3 and the second housing 12 before welding, ensures the coaxiality of the second pipe segment 3 and the second housing 12, makes assembly and welding more convenient, and also increases the weld area and welding strength, thereby enhancing the connection stability between the second pipe segment 3 and the second housing 12.

[0062] In some embodiments of this utility model, the second solder 31 is located on at least one of the following: the end face of the second pipe section 3 connected to the inlet 121; the end face of the second housing 12 opposite to the first housing 11; between the outer peripheral surface of the second pipe section 3 and the inner peripheral surface of the second housing 12; and between the inner peripheral surface of the second pipe section 3 and the outer peripheral surface of the second housing 12. For example... Figure 5 As shown in the example, the second solder 31 is located on the end face of the second housing 12 opposite to the first housing 11, as... Figure 6 As shown in the example, the second solder 31 is located on the end face of the second pipe segment 3 connected to the outlet 111. Placing the second solder 31 on the end face of the second housing 12 or the second pipe segment 3 is relatively simple and convenient, effectively reducing the difficulty of welding operations and thus improving efficiency. Alternatively, the second solder 31 can be placed between the outer circumferential surface of the second pipe segment 3 and the inner circumferential surface of the second housing 12, or between the inner circumferential surface of the second pipe segment 3 and the outer circumferential surface of the second housing 12. This fills the annular gap between the walls of the second housing 12 and the second pipe segment 3, which helps to improve the connection strength between the second pipe segment 3 and the second housing 12, while also improving the sealing performance between the second housing 12 and the second pipe segment 3.

[0063] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the end face of the first housing 11 facing away from the first pipe segment 2 and the end face of the second housing 12 facing away from the second pipe segment 3 are directly welded together. By aligning the end faces of the first housing 11 facing away from the first pipe segment 2 and the end faces of the second housing 12 facing away from the second pipe segment 3, only a short period of localized high temperature needs to be applied to the points where the first housing 11 and the second housing 12 are close to each other to directly weld them together. Aligning the end faces of the first housing 11 and the second housing 12 that are close to each other facilitates direct welding along the joint between the first housing 11 and the second housing 12, which helps reduce welding difficulty and improve connection accuracy. For example, laser welding can be used to connect the ends of the first housing 11 and the second housing 12 that are close to each other.

[0064] The first housing 11 and the second housing 12 are directly welded together at their near-each end faces. This eliminates the need to heat both housings to high temperatures, reducing the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13. This prevents the valve core 13 from deforming due to high temperatures during welding, effectively improving the quality and yield of the one-way valve component 100. Furthermore, the welding process of the first housing 11 and the second housing 12 eliminates the need for cooling methods such as wrapping the one-way valve 1 with a wet towel, contributing to increased production efficiency. It also eliminates the need to lengthen or enlarge the one-way valve 1 for wrapping with a wet towel, effectively shortening its length and dimensions, resulting in a more compact structure and reduced space occupation.

[0065] In some embodiments of this utility model, such as Figure 1 and Figure 5As shown, the diameter of the connection between the first housing 11 and the second housing 12 is the same as the diameter of the connection between the second housing 12 and the first housing 11. When the end face of the first housing 11 facing away from the first pipe section 2 and the end face of the second housing 12 facing away from the second pipe section 3 are aligned and in contact, it is convenient to make the surfaces of the first housing 11 and the second housing 12 flush at the connection point. This facilitates direct welding connection between the first housing 11 and the second housing 12, reduces welding difficulty, and helps to improve welding quality and welding efficiency, thereby increasing the yield and production efficiency of the one-way valve component 100.

[0066] In some embodiments of this utility model, such as Figure 1 and Figure 5 As shown, the outer surface of the first housing 11 is flush with the outer surface of the second housing 12. When the first housing 11 and the second housing 12 are directly welded together, steps or misalignments can be avoided at the connection between the first housing 11 and the second housing 12. This can prevent uneven energy absorption during welding, which can lead to welding defects. It can reduce the difficulty of welding, improve welding quality and efficiency, and thus improve the yield and production efficiency of the one-way valve component 100.

[0067] In some embodiments of this utility model, the maximum wall thickness of the valve core 13 is T1, where T1 ≤ 1 mm. This means the valve core 13 has a relatively small wall thickness, which reduces its weight and facilitates its movement within the one-way flow channel 14. The relatively small wall thickness of the valve core 13 also makes it more susceptible to deformation under high temperatures. Therefore, the first housing 11 and the second housing 12 can only be connected by laser welding. This provides a short-term localized high temperature at the connection point, eliminating the need to heat both the first housing 11 and the second housing 12 to a high temperature. This reduces the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, preventing deformation of the valve core 13 during welding and effectively improving the quality and yield of the one-way valve component 100.

[0068] In some embodiments of this utility model, the minimum wall thickness of the valve core 13 is T2, where 0.1mm ≤ T2 ≤ 1mm. The relatively small wall thickness of the valve core 13 reduces its weight, facilitating its movement within the unidirectional flow channel. However, the smaller wall thickness also makes the valve core 13 more susceptible to deformation under high temperatures. Therefore, the first housing 11 and the second housing 12 can only be connected by laser welding. This provides a short-term localized high temperature at the connection point, eliminating the need to heat both the first and second housings to a high temperature. This reduces the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, preventing deformation of the valve core 13 during welding and effectively improving the quality and yield of the unidirectional valve component 100.

[0069] In some embodiments of this utility model, both the first housing 11 and the second housing 12 are made of stainless steel. Using stainless steel components facilitates direct welding between the first housing 11 and the second housing 12 for connection. Stainless steel components resist corrosion from water, various chemicals, and atmospheric conditions, exhibiting good corrosion resistance and wear resistance, as well as high strength and hardness. This extends the service life of the check valve 1 and effectively improves its economic efficiency.

[0070] In some embodiments of this utility model, the first pipe section 2 is made of at least one of stainless steel, brass, and copper. Using at least one of stainless steel, brass, and copper for the first pipe section 2 facilitates welding. Stainless steel, brass, and copper components have good corrosion resistance and wear resistance, as well as high strength and hardness, ensuring the corrosion resistance and strength of the weld, thereby extending the service life of the first pipe section 2 and improving the connection stability between the first pipe section 2 and the first housing 11.

[0071] In some embodiments of this utility model, the second pipe section 3 is made of at least one of stainless steel, brass, and copper. Using at least one of stainless steel, brass, and copper for the second pipe section 3 facilitates welding. Stainless steel, brass, and copper components have good corrosion resistance and wear resistance, as well as high strength and hardness, ensuring the corrosion resistance and strength of the weld, thereby extending the service life of the second pipe section 3 and improving the connection stability between the second pipe section 3 and the second housing 12.

[0072] In some embodiments of this utility model, the width of the weld formed between the first housing 11 and the second housing 12 is W, where W ≤ 0.3 mm. That is, by controlling the width of the weld formed between the first housing 11 and the second housing 12 to be small, the heat required for welding the first housing 11 and the second housing 12 can be reduced during laser welding, thereby reducing the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13. This further reduces the risk of the valve core 13 being deformed by high temperatures during welding, thereby effectively improving the quality and yield of the one-way valve component 100.

[0073] In some embodiments of this utility model, such as Figure 5 and Figure 6 As shown in the example, the minimum distance between the first weld point of the first pipe section 2 and the first housing 11 and the center of the weld is D1, where D1≥5×W or D1≥3mm.

[0074] It should be noted that the first pipe section 2 and the first shell 11 are welded together at the first welding point by the first solder 21, and the center of the weld is the location of the center line of the weld formed between the first shell 11 and the second shell 12 in its width direction.

[0075] By ensuring that D1≥5×W or D1≥3mm, sufficient distance can be maintained between the first welding point and the weld seam formed between the first housing 11 and the second housing 12. When the first housing 11 and the second housing 12 are welded, the welding temperature can be prevented from being transferred to the first welding point and causing the first solder 21 to melt, thus ensuring the connection stability between the first housing 11 and the first pipe section 2.

[0076] In some embodiments of this utility model, such as Figure 5 and Figure 6 As shown in the example, the minimum distance between the second welding point of the second pipe section 3 and the second housing 12 and the center of the weld is D2, where D2≥5×W or D2≥3mm.

[0077] It should be noted that the second pipe section 3 and the second shell 12 are welded together at the second welding point by the second solder 31, and the center of the weld is located at the center line of the weld formed between the first shell 11 and the second shell 12 in its width direction.

[0078] By ensuring that D2≥5×W or D2≥3mm, sufficient distance can be maintained between the second welding point and the weld seam formed between the first housing 11 and the second housing 12. When the first housing 11 and the second housing 12 are welded, the welding temperature can be prevented from being transferred to the second welding point and causing the second solder 31 to melt, thus ensuring the connection stability between the second pipe section 3 and the second housing 12.

[0079] In some embodiments of this utility model, when the one-way valve 1 is open, the minimum distance between the weld and the valve core 13 is D3, where D3 ≥ 10 × W or D3 ≥ 6 mm. By ensuring that D3 ≥ 10 × W or D3 ≥ 6 mm, sufficient distance can be maintained between the weld and the valve core 13. When the first housing 11 and the second housing 12 are welded, the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13 can be reduced, further reducing the risk of the valve core 13 being deformed by high temperature during the welding process, thereby effectively improving the quality and yield of the one-way valve component 100.

[0080] In some embodiments of this invention, the welding temperature for welding the first housing 11 and the second housing 12 is higher than the melting point temperature of the first solder 21. This allows for the rapid melting of at least one of the junction or adjacent areas between the first housing 11 and the second housing 12, and the junction or adjacent areas between the second housing 12 and the first housing 11. The molten material connects the first housing 11 and the second housing 12, and after cooling, the first housing 11 and the second housing 12 are directly welded together.

[0081] Therefore, the first housing 11 and the second housing 12 can quickly complete direct contact welding, effectively reducing the welding time. This helps to reduce the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, and prevents the valve core 13 from being deformed by high temperature during the welding process, thereby effectively improving the quality and yield of the one-way valve component 100.

[0082] In some embodiments of this utility model, the first housing 11 and the second housing 12 are made of the same material, and the melting point temperature of the first housing 11 is higher than that of the first solder 21. The first pipe section 2 and the first housing 11 can be welded in a tunnel furnace by melting and cooling the first solder 21. Since the melting point temperature of the first housing 11 is higher than that of the first solder 21, it can prevent the melting temperature of the first solder 21 from melting the first housing 11 and the second housing 12, thus avoiding damage to the first housing 11 and the second housing 12.

[0083] In some embodiments of this invention, the welding temperature for welding the first housing 11 and the second housing 12 is greater than the melting point temperature of the second solder 31. This allows for the rapid melting of at least one of the junction or adjacent areas between the first housing 11 and the second housing 12, and the junction or adjacent areas between the second housing 12 and the first housing 11. The molten material connects the first housing 11 and the second housing 12, and after cooling, the first housing 11 and the second housing 12 are directly welded together.

[0084] Therefore, the first housing 11 and the second housing 12 can quickly complete direct contact welding, effectively reducing the welding time. This helps to reduce the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, and prevents the valve core 13 from being deformed by high temperature during the welding process, thereby effectively improving the quality and yield of the one-way valve component 100.

[0085] In some embodiments of this utility model, the first housing 11 and the second housing 12 are made of the same material, and the melting point temperature of the first housing 11 is higher than the melting point temperature of the second solder 31. The second pipe section 3 and the second housing 12 can be welded in a tunnel furnace by melting the second solder 31 and then cooling it. Since the melting point temperature of the first housing 11 is higher than the melting point temperature of the second solder 31, it can prevent the melting temperature of the second solder 31 from melting the first housing 11 and the second housing 12, thus avoiding damage to the first housing 11 and the second housing 12.

[0086] In some embodiments of this utility model, the minimum wall thickness at the connection between the first housing 11 and the second housing 12 is T3, where 0.1mm ≤ T3 ≤ 1mm. This means that by controlling the wall thickness at the connection between the first housing 11 and the second housing 12 to be relatively small, when the first housing 11 and the second housing 12 are laser welded, the heat required for welding can be reduced, the welding speed can be accelerated, thereby reducing the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, further reducing the risk of high-temperature deformation of the valve core 13 during welding, thus effectively improving the quality and yield of the one-way valve component 100.

[0087] In some embodiments of this utility model, the minimum wall thickness at the connection between the second housing 12 and the first housing 11 is T4, where 0.1mm ≤ T4 ≤ 1mm. This means that by controlling the wall thickness at the connection between the second housing 12 and the first housing 11 to be relatively small, when the first housing 11 and the second housing 12 are laser welded, the heat required for welding can be reduced, the welding speed can be accelerated, thereby reducing the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, further reducing the risk of high-temperature deformation of the valve core 13 during welding, thus effectively improving the quality and yield of the one-way valve component 100.

[0088] In some embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the second housing 12 has a valve port 122, which communicates with the inlet 121. The valve core 13 includes a sealing end 131, which can cooperate with the valve port 122 to seal the valve port 122. The structure is simple and reasonable, and can realize the one-way flow function of the one-way valve 1. The valve core 13 can move within the one-way flow channel 14. When the medium flows in from the inlet 121, the valve core 13 moves to a distance from the second housing 12. At this time, the sealing end 131 is spaced apart from the valve port 122, and the medium flows from the valve port 122 into the one-way flow channel 14, thus realizing the one-way flow function of the one-way valve 1. When the medium enters from the outlet 111, the valve core 13 moves to abut against the second housing 12. At this time, the sealing end 131 blocks the valve port 122, causing the one-way flow channel 14 to be blocked, thus realizing the flow obstruction function of the one-way valve 1.

[0089] In some embodiments of this utility model, such as Figure 5 and Figure 6 As shown, a limiting portion 112 is formed at the end of the first housing 11 away from the sealing end 131. The valve core 13 also includes a limiting end 132 opposite to the sealing end 131. The limiting end 132 can abut against the limiting portion 112 to restrict the movement of the valve core 13 and open the valve port 122. The cooperation between the limiting end 132 and the limiting portion 112 can play a limiting role. When the medium flows in from the inlet 121, causing the valve core 13 to move to a position spaced apart from the second housing 12, the limiting end 132 and the limiting portion 112 can limit the position of the valve core 13 and prevent the valve core 13 from leaving the one-way flow channel 14.

[0090] like Figure 5 and Figure 6 As shown in the example, the first pipe section 2 is inserted into the first housing 11, and the end of the first pipe section 2 that extends into the first housing 11 is formed as a limiting part 112, or it can be a protrusion or other structure provided on the inner wall of the first housing 11.

[0091] In some embodiments of this utility model, such as Figure 5 and Figure 6 As shown, the valve core 13 includes a cylindrical portion 133 and a conical portion 134. A sealing end 131 is formed in the conical portion 134, and a limiting end 132 is formed in the cylindrical portion 133. Both the cylindrical portion 133 and the conical portion 134 have cavities 135. When the medium enters from the outlet 111, the valve core 13 moves to abut against the second housing 12. At this time, the conical sealing end 131 blocks the valve port 122, that is, the valve port 122 abuts against the outer peripheral wall of the sealing end 131, causing the one-way flow channel 14 to be blocked, thus realizing the flow-blocking function of the one-way valve 1.

[0092] The presence of cavities 135 within the cylindrical portion 133 and the conical portion 134 reduces the weight of the valve core 13, facilitating its movement within the one-way flow channel 14. The presence of cavities 135 within both the cylindrical portion 133 and the conical portion 134 also makes the valve core 13 more susceptible to deformation under high temperatures. Therefore, the first housing 11 and the second housing 12 can only be connected by laser welding. This provides a short-term localized high temperature at the connection point, eliminating the need to heat both the first and second housings to a significantly higher temperature. This reduces the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, preventing deformation of the valve core 13 during welding and effectively improving the quality and yield of the one-way valve component 100.

[0093] In some embodiments of this utility model, the maximum wall thickness of the cylindrical portion 133 is less than or equal to 1 mm. This further reduces the weight of the valve core 13, facilitating its movement within the one-way flow channel 14. The relatively small wall thickness of the cylindrical portion 133 also makes the valve core 13 more susceptible to deformation under high temperatures. Therefore, the first housing 11 and the second housing 12 can only be connected by laser welding. This provides a short-term localized high temperature at the connection point, eliminating the need to heat the entire first housing 11 and second housing 12 to a high temperature. This reduces the heat transferred from the first housing 11 and / or the second housing 12 to the valve core 13, preventing deformation of the valve core 13 during welding and effectively improving the quality and yield of the one-way valve component 100.

[0094] The flow path switching component 200 according to an embodiment of the present invention is described below.

[0095] The flow path switching component 200 according to an embodiment of the present utility model includes: the one-way valve component 100 described above.

[0096] According to the flow path switching assembly 200 of this utility model embodiment, by welding the first pipe segment 2 to the first housing 11 with the first solder 21, and welding the second pipe segment 3 to the second housing 12 with the second solder 31, batch welding can be easily completed in a tunnel furnace, which can significantly improve production efficiency and reduce costs. By directly welding the first housing 11 and the second housing 12 to define a one-way flow channel 14, and placing the valve core 13 in the one-way flow channel 14, the one-way valve 1 can unidirectionally flow from the inlet 121 to the outlet 111, which can effectively reduce the welding temperature and prevent the valve core 13 from deforming due to high temperature during the welding process, thereby effectively improving the quality and yield of the flow path switching assembly 200. In addition, during the welding process of the first housing 11 and the second housing 12, there is no need to use cooling methods such as wrapping the one-way valve 1 with a wet towel, which helps to improve production efficiency. There is also no need to lengthen or enlarge the one-way valve 1 for wrapping with a wet towel, which can effectively shorten the length and size of the one-way valve 1, making the structure of the one-way valve 1 more compact and reducing the space occupied.

[0097] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the first pipe section 2 is the manifold of the heat exchanger. The first pipe section 2 has a first connecting hole 23. The first connecting hole 23 is one or multiple holes spaced apart along the length of the first pipe section 2. The first connecting hole 23 is used to communicate with the heat exchanger. Alternatively, the flow path switching assembly also includes a flow divider. The flow divider includes a manifold and at least two branch ports. One end of the first pipe section 2 is connected to the first housing 11. The first pipe section 2 communicates with the manifold and the branch ports are used to communicate with the heat exchanger.

[0098] A medium flows within the one-way valve component 100, which may specifically be a refrigerant. The first pipe section 2 forms the manifold of the heat exchanger, which may specifically be a gas manifold or a liquid manifold.

[0099] When the medium flows from the second shell 12 to the first shell 11, the medium can enter the heat exchanger through multiple first connecting holes 23, or part of the medium can enter the manifold from the first pipe section 2 and then enter the heat exchanger from multiple branch ports.

[0100] Setting a first connecting hole 23 can reduce the processing difficulty of the flow path switching component 200, thereby improving the production efficiency and reducing the cost of the flow path switching component 200. Setting multiple first connecting holes 23 on the first pipe section 2 allows the medium entering the first pipe section 2 to flow into the heat exchanger through multiple first connecting holes 23, forming multiple flow channel branches, which can improve the heat exchange efficiency of the heat exchanger. When the heat exchanger is used in an air conditioning system, it can improve the cooling or heating performance of the air conditioning system and improve energy efficiency.

[0101] refer to Figure 1 and Figure 2 As shown, there are two first connecting holes 23. Of course, there can also be three, four, five or six first connecting holes 23, etc.

[0102] In some embodiments of this utility model, the second pipe section 3 is the manifold of the heat exchanger, and the second pipe section 3 has a second connecting hole 32. The second connecting hole 32 is one or multiple holes spaced apart along the length of the second pipe section 3, and the second connecting hole 32 is used to communicate with the heat exchanger. The one-way valve 1 is unidirectionally open, so the medium in the first pipe section 2 can first enter the heat exchanger, and then enter the second pipe section 3 from the heat exchanger through the second connecting hole 32.

[0103] Setting a second connecting hole 32 can reduce the processing difficulty of the flow path switching component 200, thereby improving the production efficiency of the flow path switching component 200 and reducing costs. Setting multiple second connecting holes 32 on the second pipe section 3 allows the medium to flow into or out of the second pipe section 3 through these holes. These multiple connecting holes 32 are connected to the heat exchanger, allowing the medium to enter the heat exchanger from the multiple connecting holes 32, or to enter the flow path switching component 200 from the heat exchanger through the multiple connecting holes 32. This can form multiple flow path branches, improving the heat exchange efficiency of the heat exchanger, enhancing the cooling or heating performance of the air conditioning system, and improving energy efficiency.

[0104] Specifically, the second connecting hole 32 can be one, two, three, four, five, or six, etc.

[0105] This application adds a one-way valve 1 to the flow path switching component 200. The one-way valve 1 automatically opens, closes, or cuts off the flow based on the pressure difference between the media on both sides, thereby enabling automatic flow guidance of the media and changing the flow direction of the media. When the one-way valve 1 is used in heat exchangers and air conditioning systems, it can automatically switch between different flow paths of the media in different modes of the air conditioning system, thereby improving the heat exchange efficiency of the heat exchanger, improving the cooling or heating performance of the air conditioning system, and improving energy efficiency. Furthermore, it eliminates the need for other control structures, is less susceptible to power failures, and features a simple, easy-to-implement, and low-cost structure.

[0106] In some embodiments of this utility model, the first housing 11, the second housing 12, the first pipe section 2, and the second pipe section 3 are made of stainless steel. They are resistant to corrosion from water, various chemicals, and atmospheric conditions, exhibiting good corrosion resistance and wear resistance, as well as high strength and hardness. This extends the service life of the one-way valve component 100 and the flow path switching assembly 200, and also effectively improves the economic efficiency of the one-way valve component 100 and the flow path switching assembly 200.

[0107] In some embodiments of this invention, the inner diameter of the first pipe section 2 is greater than or equal to the inner diameter of the second pipe section 3. When the medium enters the second pipe section 3, the one-way valve 1 is activated, allowing part of the medium to flow to the second connecting hole 32, while another part of the medium flows from the second pipe section 3 through the one-way valve 1 into the first pipe section 2. The fact that the inner diameter of the first pipe section 2 is greater than or equal to the inner diameter of the second pipe section 3 allows more medium to enter the first pipe section 2 through the one-way valve 1. This improves the flow distribution of the medium within the flow path switching assembly 200, achieving a better flow diversion effect and ensuring that the medium is more evenly distributed to the first connecting hole 23 and the second connecting hole 32. When the flow path switching assembly 200 is applied to a heat exchanger, it can improve the heat exchange efficiency and energy efficiency of the heat exchanger.

[0108] Furthermore, making the inner diameter of the first pipe section 2 equal to the inner diameter of the second pipe section 3 can effectively reduce the difficulty of production and processing, which is conducive to improving the production efficiency of the flow path switching component 200 and reducing costs.

[0109] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, at least one first branch pipe 41 is connected to the first connecting hole 23. The first branch pipe 41 is connected to the first pipe section 2 and communicates with the first connecting hole 23. The first branch pipe 41 can be used to indirectly connect the first pipe section 2 to the heat exchanger, which can relatively reduce the difficulty of connecting the flow path switching component 200 to the heat exchange tube, reduce the probability of medium leakage, and ensure the normal operation of the heat exchanger.

[0110] The first branch pipe 41 is made of aluminum or copper. Copper and aluminum pipes have excellent thermal conductivity, which can effectively improve heat exchange efficiency. Copper pipes have very good ductility, are easy to bend and shape, and can be easily bent and coiled into various compact shapes without cracking or breaking. Aluminum pipes are more economical. In addition, copper and aluminum pipes have strong corrosion resistance, which can improve the reliability of the first branch pipe 41 and extend the service life of the flow path switching assembly 200.

[0111] refer to Figure 1 , Figure 2 and Figure 3 As shown, there are three first branch pipes 41, and further, there are two first connecting holes 23, one of which connects to one first branch pipe 41, and the other connects to two first branch pipes 41. Of course, there can also be one, two, four, five, or six first branch pipes 41, etc., and each first connecting hole 23 can connect to one, two, three, four, five, or six first branch pipes 41, etc.

[0112] It should be noted that the welding connection between the multiple first branch pipes 41 and the first pipe section 2 can ensure the connection strength between the first branch pipes 41 and the first pipe section 2, improve the structural strength of the flow path switching component 200, and ensure the reliability and stability of the flow path switching component 200. Furthermore, during the welding process, the weld metal fills the gap between the first pipe section 2 and the first branch pipes 41, forming a dense connection layer, which can effectively prevent the leakage of the medium.

[0113] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, at least one second branch pipe 42 is connected to the second connecting hole 32. The second branch pipe 42 is connected to the second pipe section 3 and communicates with the second connecting hole 32. The second branch pipe 42 can be used to indirectly connect the second pipe section 3 to the heat exchanger, which can relatively reduce the difficulty of connecting the flow path switching component 200 to the heat exchange tube, reduce the probability of medium leakage, and ensure the normal operation of the heat exchanger.

[0114] The second branch pipe 42 is made of aluminum or copper. Both copper and aluminum pipes have excellent thermal conductivity, which can effectively improve heat exchange efficiency. Copper pipes have very good ductility, are easy to bend and shape, and can be easily bent and coiled into various compact shapes without cracking or breaking. Aluminum pipes offer better economic benefits. In addition, copper and aluminum pipes have strong corrosion resistance, which can improve the reliability of the second branch pipe 42 and extend the service life of the flow path switching assembly 200.

[0115] Specifically, the second branch pipe 42 can be one, two, three, four, five or six, etc., and each second connecting hole 32 can be connected to one, two, three, four, five or six, etc.

[0116] It should be noted that the welding connection between multiple second branch pipes 42 and second pipe section 3 can ensure the connection strength between the second branch pipes 42 and second pipe section 3, improve the structural strength of the flow path switching component 200, and ensure the reliability and stability of the flow path switching component 200. In addition, during the welding process, the weld metal fills the gap between the second pipe section 3 and the second branch pipes 42, forming a dense connection layer, which can effectively prevent the leakage of the medium.

[0117] In some embodiments of this utility model, the inner diameter of the second branch pipe 42 is less than or equal to the inner diameter of the first branch pipe 41, and the number of first branch pipes 41 is greater than the number of second branch pipes 42. When the medium enters the second pipe section 3, the one-way valve 1 is opened, and part of the medium flows to the second connecting hole 32, while the other part of the medium flows to the first connecting hole 23 after passing through the one-way valve 1.

[0118] Understandably, by making the inner diameter of the second branch pipe 42 smaller than that of the first branch pipe 41, the flow resistance of the medium flowing into the second branch pipe 42 will increase after the medium flows into the second pipe section 3. Furthermore, since the number of first branch pipes 41 is greater than the number of second branch pipes 42, more medium continues to flow towards the first connecting hole 23 after passing through the one-way valve 1, thus meeting the flow demand of the first connecting hole 23. This better achieves the flow diversion function, improves the problem of uneven flow diversion caused by the dynamic pressure of the medium, and further enhances the flow diversion effect of the flow path switching component 200. When the flow path switching component 200 is applied to heat exchangers and air conditioning systems, it can improve the heat exchange efficiency of the heat exchanger, improve the cooling or heating performance of the air conditioning system, and improve energy efficiency.

[0119] In some embodiments of this invention, the first branch pipe 41 and the second branch pipe 42 are copper pipes. Copper pipes have excellent thermal conductivity, which can effectively improve heat exchange efficiency. Copper pipes have very good ductility, are easy to bend and shape, and can be easily bent and coiled into various compact shapes without cracking or breaking. In addition, copper pipes have strong corrosion resistance, which can improve the reliability of the first branch pipe 41 and the second branch pipe 42 and extend the service life of the flow path switching assembly 200.

[0120] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 3As shown, the first pipe segment 2 also has a first port 22, with the end of the first pipe segment 2 facing away from the first housing 11 open to form the first port 22. Setting the first port 22 at one end of the length direction of the first pipe segment 2 has a simple structure, is easy to process and manufacture, and is conducive to improving production and processing efficiency and reducing costs. Moreover, the first port 22 is located at the end of the length direction of the first pipe segment 2, which also facilitates installation and assembly, thereby improving assembly efficiency.

[0121] In some embodiments of this invention, the first pipe section 2 further includes a first port 22, which is located on the peripheral wall of the first pipe section 2. The medium enters through the first port 22 located on the peripheral wall of the first pipe section 2, which can generate strong vortices, secondary flows, and turbulence within the first pipe section 2, making the medium temperature more uniform and thus improving the convective heat transfer coefficient.

[0122] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the first pipe segment 2 also has a first port 22, and the flow path switching assembly 200 also includes an intake pipe 43, one end of which is connected to the first port 22. The intake pipe 43 is connected to the first pipe segment 2 and communicates with the first port 22. The arrangement of the intake pipe 43 facilitates the indirect connection between the one-way valve component 100 and components such as a four-way valve in the air conditioning system, which can relatively reduce the difficulty of connecting the flow path switching assembly 200 with other components, and helps to reduce the probability of medium leakage and ensure the normal operation of the air conditioning system.

[0123] It should be noted that the intake pipe 43 is welded to the first pipe section 2, which can ensure the connection strength between the intake pipe 43 and the first pipe section 2, improve the structural strength of the flow path switching component 200, and ensure the reliability and stability of the flow path switching component 200. In addition, during the welding process, the weld metal fills the gap between the first pipe section 2 and the intake pipe 43, forming a dense connection layer, which can effectively prevent the leakage of the medium.

[0124] In some embodiments of this utility model, such as Figure 1 , Figure 2 and Figure 3 As shown, the inlet pipe 43 is a U-shaped or V-shaped pipe. When the medium enters through the inlet pipe 43, the U-shaped or V-shaped inlet pipe 43 can accelerate the medium under the action of centrifugal force, thereby increasing the flow power of the medium in the first pipe section 2 and preventing the medium from accumulating at the inlet pipe 43. This can improve the flow distribution of the medium in the flow path switching assembly 200. When the flow path switching assembly 200 is applied to a heat exchanger, it can improve the heat exchange efficiency of the heat exchanger and improve energy efficiency.

[0125] In some embodiments of this utility model, such as Figure 7 , Figure 8 and Figure 9 As shown, there are multiple one-way valve components 100, including a first one-way valve component 51, a second one-way valve component 52, a third one-way valve component 53, and a fourth one-way valve component 54. The first one-way valve component 51, the second one-way valve component 52, the third one-way valve component 53, and the fourth one-way valve component 54 are connected in a ring. There is a first interface 61 between the first one-way valve component 51 and the second one-way valve component 52, a second interface 62 between the second one-way valve component 52 and the third one-way valve component 53, a third interface 63 between the third one-way valve component 53 and the fourth one-way valve component 54, and a fourth interface 64 between the fourth one-way valve component 54 and the first one-way valve component 51. The first interface 61 to the fourth interface 64 are unidirectionally connected, the second interface 62 to the first interface 61 is unidirectionally connected, the second interface 62 to the third interface 63 is unidirectionally connected, and the third interface 63 to the fourth interface 64 is unidirectionally connected.

[0126] The first one-way valve component 51 controls the on / off connection between the first interface 61 and the fourth interface 64; the second one-way valve component 52 controls the on / off connection between the first interface 61 and the second interface 62; the third one-way valve component 53 controls the on / off connection between the second interface 62 and the third interface 63; and the fourth one-way valve component 54 controls the on / off connection between the third interface 63 and the fourth interface 64. By integrating multiple one-way valve components 100 into a flow path switching assembly 200, the integration of the flow path switching assembly 200 can be improved. When the flow path switching assembly 200 is applied to an air conditioning system, it can realize flow path switching during different states such as cooling and heating of the air conditioning system. It can also avoid connecting the first one-way valve component 51, the second one-way valve component 52, the third one-way valve component 53, and the fourth one-way valve component 54 through separate pipes, thereby simplifying the pipe connection structure of the air conditioning system, reducing the number of welding points between pipes, reducing assembly difficulty and improving assembly efficiency, and thus reducing costs.

[0127] In some embodiments of this utility model, such as Figure 7 , Figure 8 and Figure 9 As shown, the second pipe section 3 of the first one-way valve component 51 and the first pipe section 2 of the second one-way valve component 52 are integrally formed. Since the second pipe section 3 of the first one-way valve component 51 and the first pipe section 2 of the second one-way valve component 52 are integrally machined, there is no need to align and connect multiple pipe sections when assembling the flow path switching assembly 200. This simplifies the assembly process of the flow path switching assembly 200, improves its assembly and maintenance efficiency, and correspondingly reduces potential leakage points, thus lowering the risk of leakage in the flow path switching assembly 200.

[0128] In some embodiments of this utility model, such as Figure 7 , Figure 8 and Figure 9 As shown, the first pipe section 2 of the third check valve component 53 and the second pipe section 3 of the fourth check valve component 54 are integral parts. Since the first pipe section 2 of the third check valve component 53 and the second pipe section 3 of the fourth check valve component 54 are integrally machined, there is no need to align and connect multiple pipe sections when assembling the flow path switching assembly 200. This simplifies the assembly process of the flow path switching assembly 200, improves its assembly and maintenance efficiency, and correspondingly reduces potential leakage points, thus lowering the risk of leakage in the flow path switching assembly 200.

[0129] In some embodiments of this utility model, such as Figure 7 , Figure 8 and Figure 9 As shown, the first pipe segment 2 of the first one-way valve component 51 and the first pipe segment 2 of the fourth one-way valve component 54 are connected by a first tee pipe 55, and one interface of the first tee pipe 55 is formed as a fourth interface 64. By setting the first tee pipe 55, the first one-way valve component 51 and the fourth one-way valve component 54 can be arranged side by side, which facilitates the reasonable layout of multiple one-way valve components 100. Furthermore, a shorter flow path can be formed between the first interface 61 and the fourth interface 64, as well as between the third interface 63 and the fourth interface 64, which can effectively improve the structural compactness and reduce the space occupied by the flow path switching component 200.

[0130] In some embodiments of this utility model, such as Figure 7 , Figure 8 and Figure 9 As shown, the second pipe section 3 of the second one-way valve component 52 and the second pipe section 3 of the third one-way valve component 53 are connected by a second tee pipe 56, and one interface of the second tee pipe 56 is formed as a second interface 62. By setting the second tee pipe 56, the second one-way valve component 52 and the third one-way valve component 53 can be arranged side by side, which facilitates the reasonable layout of multiple one-way valve components 100. Moreover, a shorter flow path can be formed between the first interface 61 and the second interface 62, as well as between the second interface 62 and the third interface 63, which can effectively improve the structural compactness and reduce the space occupied by the flow path switching component 200.

[0131] In some embodiments of this utility model, the one-way valve 1 is made of stainless steel, while the first pipe section 2, the second pipe section 3, the first tee pipe 55, and the second tee pipe 56 are made of copper. Making the one-way valve 1 a stainless steel component facilitates assembly and connection via welding. Stainless steel components resist corrosion from water, various chemicals, and atmospheric conditions, exhibiting good corrosion resistance and wear resistance, as well as high strength and hardness. This extends the service life of the one-way valve 1 and the flow path switching assembly 200, and also effectively improves the economic efficiency of the one-way valve 1 and the flow path switching assembly 200.

[0132] The first pipe section 2, the second pipe section 3, the first tee pipe 55, and the second tee pipe 56 are made of copper. Copper has excellent ductility, is easy to bend and shape, and can be easily bent and coiled into various compact shapes without cracking or breaking, ensuring structural stability and reliability. In addition, copper has strong corrosion resistance. Water easily condenses on the surfaces of the first pipe section 2, the second pipe section 3, the first tee pipe 55, and the second tee pipe 56. Copper components can improve reliability and extend the service life of the flow path switching assembly 200.

[0133] The following describes a heat exchanger according to an embodiment of the present invention.

[0134] The heat exchanger according to an embodiment of the present invention includes: the flow path switching component 200 and the heat transfer tube, wherein the flow path switching component 200 is connected to the heat transfer tube.

[0135] According to the heat exchanger of this utility model embodiment, by welding the first pipe section 2 to the first shell 11 with the first solder 21, and welding the second pipe section 3 to the second shell 12 with the second solder 31, batch welding can be easily completed in a tunnel furnace, which can significantly improve production efficiency and reduce costs. By directly welding the first shell 11 and the second shell 12 to define a one-way flow channel 14, and placing the valve core 13 in the one-way flow channel 14, the one-way valve 1 can unidirectionally flow from the inlet 121 to the outlet 111, which can effectively reduce the welding temperature and prevent the valve core 13 from deforming due to high temperature during the welding process, thereby effectively improving the quality and yield of the flow path switching component 200. In addition, during the welding process of the first shell 11 and the second shell 12, there is no need to use cooling methods such as wrapping the one-way valve 1 with a wet towel, which helps to improve production efficiency. There is also no need to lengthen or enlarge the one-way valve 1 for wrapping with a wet towel, which can effectively shorten the length and size of the one-way valve 1, making the structure of the one-way valve 1 more compact and reducing the space occupied.

[0136] The following describes an air conditioning system according to an embodiment of the present invention.

[0137] An air conditioning system according to an embodiment of the present invention includes: the flow path switching component 200 described above or the heat exchanger described above.

[0138] According to the air conditioning system of this utility model embodiment, by welding the first pipe section 2 to the first housing 11 with the first solder 21, and welding the second pipe section 3 to the second housing 12 with the second solder 31, batch welding can be easily completed in a tunnel furnace, which can significantly improve production efficiency and reduce costs. By directly welding the first housing 11 and the second housing 12 to define a one-way flow channel 14, with the valve core 13 disposed within the one-way flow channel 14, and the one-way valve 1 flowing unidirectionally from the inlet 121 to the outlet 111, the welding temperature can be effectively reduced, and the valve core 13 can be prevented from deforming due to high temperature during the welding process, thereby effectively improving the quality and yield of the flow path switching component 200. In addition, during the welding process of the first housing 11 and the second housing 12, there is no need to use cooling methods such as wrapping the one-way valve 1 with a wet towel, which helps to improve production efficiency. There is also no need to lengthen or enlarge the one-way valve 1 to wrap it with a wet towel, which can effectively shorten the length and size of the one-way valve 1, making the structure of the one-way valve 1 more compact and reducing the space occupied.

[0139] The following describes an air conditioner according to an embodiment of the present invention.

[0140] An air conditioner according to an embodiment of the present invention includes: the air conditioning system described above.

[0141] According to the embodiment of the present invention, the air conditioner connects the first pipe segment 2 to the first housing 11 by welding with the first solder 21, and the second pipe segment 3 to the second housing 12 by welding with the second solder 31. This facilitates batch welding in a tunnel furnace, significantly improving production efficiency and reducing costs. By directly welding the first housing 11 and the second housing 12 together and defining a one-way flow channel 14, with the valve core 13 located within the one-way flow channel 14, and the one-way valve 1 flowing unidirectionally from the inlet 121 to the outlet 111, the welding temperature is effectively reduced, preventing the valve core 13 from deforming due to high temperatures during welding. This effectively improves the quality and yield of the flow path switching component 200. Furthermore, the welding process of the first housing 11 and the second housing 12 eliminates the need for cooling methods such as wrapping the one-way valve 1 with a wet towel, further improving production efficiency. It also eliminates the need to lengthen or enlarge the one-way valve 1 for wrapping with a wet towel, effectively shortening its length and size, making the structure of the one-way valve 1 more compact and reducing its space requirements.

[0142] Other components and operations of the heat exchanger, air conditioning system, and air conditioner according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0143] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0144] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A one-way valve component, characterized in that, include: A one-way valve includes a first housing, a second housing, and a valve core. The first housing and the second housing are directly welded together and define a one-way flow channel. The first housing has an outlet, and the second housing has an inlet. The valve core is disposed in the one-way flow channel, and the one-way valve is unidirectionally open from the inlet to the outlet. The first pipe section, one end of which is connected to the outlet, is welded to the first housing by a first solder. The second pipe section, one end of which is connected to the inlet, is welded to the second housing using a second solder.

2. The one-way valve component according to claim 1, characterized in that, The first pipe section is inserted into the first housing or the first housing is inserted into the first pipe section; And / or, the first solder is located on at least one of the following: the end face of the first pipe segment connected to the outlet; the end face of the first housing opposite to the second housing; between the outer peripheral surface of the first pipe segment and the inner peripheral surface of the first housing; and between the inner peripheral surface of the first pipe segment and the outer peripheral surface of the first housing.

3. The one-way valve component according to claim 1, characterized in that, The second pipe section is inserted into the second housing or the second housing is inserted into the second pipe section; And / or, the second solder is located on at least one of the following: the end face of the second pipe segment connected to the inlet; the end face of the second housing opposite to the first housing; between the outer peripheral surface of the second pipe segment and the inner peripheral surface of the second housing; and between the inner peripheral surface of the second pipe segment and the outer peripheral surface of the second housing.

4. The one-way valve component according to claim 1, characterized in that, The end face of the first housing opposite to the first pipe section and the end face of the second housing opposite to the second pipe section are directly welded together.

5. The one-way valve component according to claim 4, characterized in that, The diameter of the connection point between the first housing and the second housing is the same as the diameter of the connection point between the second housing and the first housing; and / or The outer surface of the first housing is flush with the outer surface of the second housing.

6. The one-way valve component according to claim 1, characterized in that, The maximum wall thickness of the valve core is T1, where T1 ≤ 1 mm; and / or The minimum wall thickness of the valve core is T2, where 0.1mm ≤ T2 ≤ 1mm.

7. The one-way valve component according to claim 1, characterized in that, Both the first housing and the second housing are made of stainless steel; and / or The first pipe section is made of at least one of stainless steel, brass, and copper; and / or The second pipe section is made of at least one of stainless steel, brass, and copper.

8. The one-way valve component according to claim 1, characterized in that, The width of the weld formed between the first housing and the second housing is W, where W ≤ 0.3 mm.

9. The one-way valve component according to claim 8, characterized in that, The minimum distance between the first weld point of the first pipe segment and the first shell and the center of the weld is D1, where D1 ≥ 5 × W or D1 ≥ 3 mm; and / or The minimum distance between the second welding point of the second pipe section and the second shell and the center of the weld is D2, where D2≥5×W or D2≥3mm.

10. The one-way valve component according to claim 8, characterized in that, When the one-way valve is turned on, the minimum distance between the weld and the valve core is D3, where D3 ≥ 10 × W or D3 ≥ 6 mm.

11. The one-way valve component according to any one of claims 8-10, characterized in that, The welding temperature for welding the first housing and the second housing is greater than the melting point temperature of the first solder; and / or The first housing and the second housing are made of the same material, and the melting point temperature of the first housing is higher than the melting point temperature of the first solder; and / or The welding temperature for welding the first housing and the second housing is greater than the melting point temperature of the second solder; and / or The first housing and the second housing are made of the same material, and the melting point temperature of the first housing is higher than that of the second solder.

12. The one-way valve component according to any one of claims 8-10, characterized in that, The minimum wall thickness at the connection between the first housing and the second housing is T3, 0.1mm≤T3≤1mm; and / or The minimum wall thickness at the connection between the second housing and the first housing is T4, where 0.1mm≤T4≤1mm.

13. The one-way valve component according to claim 1, characterized in that, The second housing has a valve port that communicates with the inlet. The valve core includes a sealing end that can cooperate with the valve port to seal the valve port.

14. The one-way valve component according to claim 13, characterized in that, The first housing has a limiting portion formed at the end away from the sealing end, and the valve core also includes a limiting end opposite to the sealing end. The limiting end can abut against the limiting portion to restrict the movement of the valve core and open the valve port.

15. The one-way valve component according to claim 14, characterized in that, The valve core includes a cylindrical portion and a conical portion, the sealing end is formed in the conical portion, the limiting end is formed in the cylindrical portion, and both the cylindrical portion and the conical portion have cavities.

16. The one-way valve component according to claim 15, characterized in that, The maximum wall thickness of the cylindrical portion is less than or equal to 1 mm.

17. A flow path switching component, characterized in that, Includes the one-way valve component according to any one of claims 1-16.

18. The flow path switching component according to claim 17, characterized in that, The first pipe section is the manifold of a heat exchanger, and the first pipe section has a first connecting hole. The first connecting hole may be one or multiple holes spaced apart along the length of the first pipe section. The first connecting hole is used to communicate with the heat exchanger; or The flow path switching component further includes a flow divider, which includes a manifold and at least two branch ports. One end of the first pipe section is connected to the first housing, the first pipe section is connected to the manifold, and the branch ports are used to connect to the heat exchanger.

19. The flow path switching component according to claim 18, characterized in that, The second pipe section is the manifold of the heat exchanger. The second pipe section has a second connecting hole. The second connecting hole is one or multiple holes spaced apart along the length of the second pipe section. The second connecting hole is used to communicate with the heat exchanger.

20. The flow path switching component according to claim 19, characterized in that, The first housing, the second housing, the first pipe section, and the second pipe section are all made of stainless steel.

21. The flow path switching component according to claim 19, characterized in that, The inner diameter of the first pipe section is greater than or equal to the inner diameter of the second pipe section.

22. The flow path switching component according to claim 19, characterized in that, At least one first branch pipe is connected to the first connecting hole, and the first branch pipe is an aluminum pipe or a copper pipe. And / or, at least one second branch pipe is connected to the second connecting hole, the second branch pipe being an aluminum pipe or a copper pipe.

23. The flow path switching component according to claim 22, characterized in that, The inner diameter of the second branch pipe is less than or equal to the inner diameter of the first branch pipe, and the number of the first branch pipes is greater than the number of the second branch pipes.

24. The flow path switching component according to claim 18, characterized in that, The first pipe segment also has a first port, with the end of the first pipe segment facing away from the first housing open to form the first port; or, the first pipe segment also has a first port, with the first port located on the peripheral wall of the first pipe segment; And / or, the first pipe segment also has a first port, and the flow path switching assembly further includes an air intake pipe, one end of which is connected to the first port.

25. The flow path switching component according to claim 17, characterized in that, The one-way valve components are multiple, including a first one-way valve component, a second one-way valve component, a third one-way valve component, and a fourth one-way valve component. The first, second, third, and fourth one-way valve components are sequentially connected in a ring. A first interface exists between the first and second one-way valve components; a second interface exists between the second and third one-way valve components; a third interface exists between the third and fourth one-way valve components; and a fourth interface exists between the fourth one-way valve component and the first one-way valve component. The first interface is unidirectionally connected to the fourth interface, the second interface is unidirectionally connected to the first interface, the second interface is unidirectionally connected to the third interface, and the third interface is unidirectionally connected to the fourth interface.

26. The flow path switching component according to claim 25, characterized in that, The second pipe section of the first check valve component and the first pipe section of the second check valve component are integral parts; And / or, the first pipe section of the third check valve component and the second pipe section of the fourth check valve component are integral parts; And / or, the first pipe segment of the first one-way valve component and the first pipe segment of the fourth one-way valve component are connected by a first tee pipe, and one interface of the first tee pipe is formed as the fourth interface; And / or, the second pipe segment of the second one-way valve component and the second pipe segment of the third one-way valve component are connected by a second tee pipe, and one interface of the second tee pipe is formed as the second interface.

27. The flow path switching component according to claim 26, characterized in that, The one-way valve is made of stainless steel, while the first pipe section, the second pipe section, the first tee pipe, and the second tee pipe are made of copper.

28. A heat exchanger, characterized in that, It includes a flow path switching component and a heat transfer tube according to any one of claims 17-27, wherein the flow path switching component is in communication with the heat transfer tube.

29. An air conditioning system, characterized in that, Includes the flow path switching component according to any one of claims 17-27 or the heat exchanger according to claim 28.

30. An air conditioner, characterized in that, Including the air conditioning system according to claim 29.

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