Valve assembly and air conditioner having the same

Abstract

The utility model discloses a valve assembly and air conditioner with it, valve assembly includes: valve structure, valve structure includes valve shell and valve core, and valve shell includes joint part, and joint part is copper spare, and valve core movably sets up in valve shell, connecting pipe, and one end of connecting pipe is connected through first soldering material with joint part, and connecting pipe is copper pipe, and refrigerant radiating pipe, and refrigerant radiating pipe includes first section and second section who arranges and is connected along the axial direction of refrigerant radiating pipe, and the outer diameter of first section is greater than the outer diameter of second section, and one end of connecting pipe is connected through second soldering material with the first section and the end of connecting pipe away from joint part, and refrigerant radiating pipe is stainless steel pipe, and refrigerant radiating pipe is used for with the heat transfer connection of electronic component of air conditioner, according to the valve assembly of the utility model, and connecting technology is mature and simple, can improve the production efficiency of valve assembly as far as possible on the basis of guaranteeing the normal connection between refrigerant radiating pipe and joint part, reduces the production and processing cost of valve assembly.

Description

Technical Field

[0001] This utility model relates to the field of air handling equipment technology, and in particular to a valve assembly and an air conditioner having the same. Background Technology

[0002] In related technologies, the refrigerant heat dissipation solution used in air conditioners involves welding copper pipes to copper throttling valves. With the continuous rise in the cost of existing copper materials, the large amount of copper used has a significant impact on the cost of air conditioners. However, directly replacing the copper refrigerant heat dissipation pipes with stainless steel refrigerant heat dissipation pipes would result in a complex welding process and poor welding efficiency between the stainless steel refrigerant heat dissipation pipes and the copper throttling valves. 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 valve assembly in which a stainless steel refrigerant heat dissipation pipe is indirectly connected to a copper connector via a copper connecting pipe. This process is mature and simple, and can improve the production efficiency and reduce the production cost of the valve assembly.

[0004] This utility model also proposes an air conditioner, which includes the valve assembly described above.

[0005] The valve assembly according to an embodiment of the present utility model includes: a valve structure, the valve structure including a valve shell and a valve core, the valve shell including a connector, the connector being a copper component, and the valve core being movably disposed within the valve shell; a connecting pipe, one end of the connecting pipe being welded to the connector by a first solder, the connecting pipe being a copper pipe; and a refrigerant heat dissipation pipe, the refrigerant heat dissipation pipe including a first section and a second section arranged and connected along the axial direction of the refrigerant heat dissipation pipe, the outer diameter of the first section being larger than the outer diameter of the second section, the first section being welded to the end of the connecting pipe opposite to the connector by a second solder, the refrigerant heat dissipation pipe being a stainless steel pipe, and the refrigerant heat dissipation pipe being used for heat transfer connection with electronic components of an air conditioner.

[0006] According to the valve assembly of this utility model embodiment, a stainless steel refrigerant heat dissipation pipe is indirectly connected to a copper connector via a copper connecting pipe. The supplier directly provides the welded connecting pipe and refrigerant heat dissipation pipe to the air conditioner manufacturer. The air conditioner manufacturer only needs to weld the copper connecting pipe to the copper connector. The process is mature and simple, requiring no change in welding equipment. This maximizes the production efficiency of the valve assembly and reduces its production and processing costs, thereby reducing the production cost of the air conditioner, while ensuring a normal connection between the refrigerant heat dissipation pipe and the connector. Furthermore, by dividing the refrigerant heat dissipation pipe into a first segment and a second segment, with the outer diameter of the first segment being larger than that of the second segment, the outer diameter of the portion of the refrigerant heat dissipation pipe connected to the connecting pipe is increased. This facilitates the connection between the first segment and the connecting pipe, avoiding situations where a large difference between the outer diameter of the first segment and the inner diameter of the connecting pipe prevents connection. This further reduces the production and processing costs of the valve assembly while ensuring a normal connection between the first segment and the connecting pipe.

[0007] In addition, the valve assembly according to this utility model may also have the following additional technical features: In some embodiments, the second segment includes a first sub-segment and a second sub-segment, the first sub-segment being connected between the first segment and the second sub-segment, and the diameter of the first sub-segment gradually decreasing in the direction from the first segment to the second segment.

[0008] In some embodiments, the first segment passes through the connecting pipe, and at least one of the outer peripheral wall of the first segment and the inner peripheral wall of the connecting pipe is provided with a plurality of grooves. The plurality of grooves extend along the axial direction of the first segment and are spaced apart in the circumferential direction of the first segment. The second solder fills the grooves.

[0009] In some embodiments, the first segment passes through the connecting pipe, the connecting pipe including a third segment and a fourth segment arranged and connected along the axial direction of the connecting pipe, the inner diameter of the third segment being smaller than the inner diameter of the fourth segment, a portion of the third segment extending into the joint portion, and the fourth segment sleeved outside the first segment and welded to the first segment.

[0010] In some embodiments, the outer diameter of the first segment remains unchanged along the axial direction of the first segment; and / or, the inner diameter of the fourth segment remains unchanged along the axial direction of the fourth segment.

[0011] In some embodiments, the single-sided gap between the outer peripheral wall of the first segment and the inner peripheral wall of the fourth segment is 0mm-0.05mm; and / or, the double-sided gap between the outer peripheral wall of the first segment and the inner peripheral wall of the fourth segment is 0mm-0.1mm; and / or, the distance difference between the outer diameter of the first segment and the inner diameter of the fourth segment is 0mm-0.1mm; and / or, the outer peripheral wall of the first segment and the inner peripheral wall of the fourth segment are interference fit or transition fit.

[0012] In some embodiments, the valve housing has a positioning protrusion on its inner peripheral wall, and the connecting pipe is located on the side of the positioning protrusion facing the refrigerant heat dissipation pipe and abuts against the positioning protrusion.

[0013] In some embodiments, the positioning protrusions are a plurality of protrusions spaced apart along the circumferential direction of the valve housing, or the positioning protrusions extend in a ring shape along the circumferential direction of the valve housing.

[0014] In some embodiments, the refrigerant heat dissipation pipe is located on the side of the connecting pipe away from the joint portion. Along the axial direction of the connecting pipe, the distance between the first segment and the joint portion is H1, and satisfies: H1≥0mm.

[0015] In some embodiments, one end of the connecting pipe passes through the joint portion, the first solder fills the space between the outer peripheral wall of the connecting pipe and the inner peripheral wall of the valve body, and the single-sided gap between the outer peripheral wall of the connecting pipe and the inner peripheral wall of the joint portion is 0.05mm-0.15mm; and / or, the double-sided gap between the outer peripheral wall of the connecting pipe and the inner peripheral wall of the joint portion is 0.1mm-0.3mm; and / or, the distance difference between the outer diameter of the connecting pipe and the inner diameter of the joint portion is 0.1mm-0.3mm.

[0016] In some embodiments, the valve housing is made of copper and is an integral structure; or, the portion of the valve housing other than the connector is made of stainless steel and is welded to the connector.

[0017] In some embodiments, the first segment passes through the connecting pipe, one end of the connecting pipe passes through the joint, and the inner diameter of the second segment is smaller than the inner diameter of the connecting pipe, and the inner diameter of the connecting pipe is smaller than the inner diameter of the joint.

[0018] In some embodiments, the melting point of the first solder is lower than that of the second solder; and / or, the minimum distance between the first solder and the valve core is less than the minimum distance between the second solder and the valve core; and / or, the minimum distance between the valve core and the first solder is greater than or equal to 15 mm, or, the minimum distance between the solder joint of the connector and the connecting pipe and the valve core is greater than or equal to 15 mm.

[0019] In some embodiments, the valve structure further includes a filter screen installed in the valve housing, the filter screen being located between the valve core and the connector, the minimum distance between the filter screen and the first solder being greater than or equal to 10 mm, or the minimum distance between the solder joint of the connector and the connecting pipe and the filter screen being greater than or equal to 10 mm.

[0020] This utility model also provides an air conditioner having the above-described embodiments.

[0021] According to the embodiments of this utility model, the air conditioner, by incorporating the aforementioned valve assembly, indirectly connects a stainless steel refrigerant heat dissipation pipe to a copper connector via a copper connecting pipe. The supplier directly provides the welded connecting pipe and refrigerant heat dissipation pipe to the air conditioner manufacturer. The air conditioner manufacturer only needs to weld the copper connecting pipe to the copper connector. The process is mature and simple, requiring no change in welding equipment. This ensures a proper connection between the refrigerant heat dissipation pipe and the connector while maximizing the production efficiency of the valve assembly and reducing its manufacturing costs, thereby lowering the overall production cost of the air conditioner. Furthermore, by dividing the refrigerant heat dissipation pipe into a first segment and a second segment, with the outer diameter of the first segment being larger than that of the second segment, the outer diameter of the portion of the refrigerant heat dissipation pipe connected to the connecting pipe is enlarged. This facilitates the connection between the first segment and the connecting pipe, preventing situations where a large difference between the outer diameter of the first segment and the inner diameter of the connecting pipe prevents connection. This further reduces the manufacturing costs of the valve assembly while ensuring a proper connection between the first segment and the connecting pipe.

[0022] 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

[0023] 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 cross-sectional schematic diagram of a valve assembly according to an embodiment of the present utility model; Figure 2 This is a partial front view of the refrigerant heat dissipation pipe of the valve assembly according to an embodiment of the present utility model; Figure 3This is a side view of the refrigerant heat dissipation pipe of the valve assembly according to an embodiment of the present utility model; Figure 4 This is a cross-sectional schematic diagram of the valve structure of the valve assembly according to an embodiment of the present utility model; Figure 5 yes Figure 4 Enlarged view of point A in the middle; Figure 6 This is a partial structural schematic diagram of an air conditioner according to an embodiment of the present utility model.

[0024] Figure label: 100. Air conditioner; 10. Valve assembly; 1. Valve structure; 11. Connector; 111. Positioning protrusion; 112. Recess; 12. Valve body; 121. First cavity; 122. Second cavity; 13. Valve seat; 131. First valve port; 132. Second valve port; 133. Third valve port; 134. Valve chamber; 14. Valve core; 141. Flow reduction orifice; 15. Filter screen; 2. Connecting pipe; 21. Third section; 211. Third sub-section; 212. Fourth sub-section; 22. Fourth section; 3. Refrigerant heat dissipation pipe; 31. First section; 311. Groove; 32. Second section; 321. First sub-segment; 322. Second sub-segment; 20. Shut-off valve; 30. High-pressure copper pipe; 40. Refrigerant heat dissipation structure. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of the 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.

[0026] 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", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] The valve assembly 10 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, the valve assembly 10 according to an embodiment of the present invention includes a valve structure 1, a connecting pipe 2, and a refrigerant heat dissipation pipe 3.

[0031] Specifically, see the attached document. Figure 1 As shown, valve structure 1 includes valve housing 12 and valve core 14. Valve housing 12 includes connector 11, which is made of copper. Valve core 14 is movably disposed within valve housing 12. One end of connecting pipe 2 is welded to connector 11 by a first solder. Connecting pipe 2 is made of copper. Refrigerant heat dissipation pipe 3 includes components along the axial direction of refrigerant heat dissipation pipe 3 (see attached diagram). Figure 1 The first segment 31 and the second segment 32 are arranged and connected in the first direction shown. The outer diameter of the first segment 31 is larger than the outer diameter of the second segment 32. The first segment 31 is welded to one end of the connecting pipe 2 away from the joint 11 by the second solder. The refrigerant heat dissipation pipe 3 is a stainless steel pipe. The refrigerant heat dissipation pipe 3 is used for heat transfer connection with the electronic components of the air conditioner 100.

[0032] It is understood that the valve assembly 10 of this utility model embodiment can be applied to the air conditioner 100, and the electronic component can be the control box. The refrigerant heat dissipation pipe 3 is heat-transfer connected to the control box, so that the refrigerant in the refrigerant heat dissipation pipe 3 can exchange heat with the control box, cool down the control box, prevent the control box from failing, and extend the service life of the air conditioner 100.

[0033] In related technologies, the refrigerant heat dissipation solution for air conditioners is a solution of welding copper pipes to a throttle valve. With the current high copper price, this greatly increases the cost of air conditioners. However, this utility model selects a relatively inexpensive stainless steel pipe as the refrigerant heat dissipation pipe 3, and indirectly connects the refrigerant heat dissipation pipe 3 to the joint 11 of the valve structure 1 through a copper connecting pipe 2. This can reduce the amount of copper used in the valve assembly 10 as much as possible while ensuring the connection strength of the valve assembly 10, effectively reducing the production cost of the valve assembly 10, and thus reducing the production cost of the air conditioner 100.

[0034] It should be noted that due to the significant difference between the outer diameter of the refrigerant heat dissipation pipe 3 and the inner diameter of the connector 11, and because the refrigerant heat dissipation pipe 3 is made of stainless steel while the connector 11 is made of steel, the air conditioner manufacturer 100 cannot directly connect the refrigerant heat dissipation pipe 3 to the connector 11. Sending the refrigerant heat dissipation pipe 3 and the connector 11 to a specialized welding factory would increase the transportation and production costs of the valve assembly 10. Therefore, by using a copper connecting pipe 2, the supplier can directly provide the welded connecting pipe 2 and the refrigerant heat dissipation pipe 3 to the air conditioner manufacturer 100. The air conditioner manufacturer 100 only needs to weld the copper connecting pipe 2 to the copper connector 11. This process is mature and simple, requiring no change in welding equipment. It can maximize the production efficiency of the valve assembly 10 and reduce its production and processing costs while ensuring a proper connection between the refrigerant heat dissipation pipe 3 and the connector 11. For example, since both the connector 11 and the connecting pipe 2 are made of copper, they can be directly welded together using a handheld welding torch.

[0035] By dividing the refrigerant heat dissipation pipe 3 into a first section 31 and a second section 32, with the outer diameter of the first section 31 being larger than that of the second section 32, the outer diameter of the part of the refrigerant heat dissipation pipe 3 that connects to the connecting pipe 2 can be increased, making it easier to connect the first section 31 to the connecting pipe 2. This avoids the situation where the connection cannot be made due to a large difference between the outer diameter of the first section 31 and the inner diameter of the connecting pipe 2. On the basis of ensuring a normal connection between the first section 31 and the connecting pipe 2, the production and processing cost of the valve assembly 10 can be further reduced.

[0036] In a specific example, see Appendix Figure 4 As shown, valve structure 1 is a throttle valve, which also includes a valve seat 13, and the valve body 12 is positioned along a first direction (e.g., Figure 4 As shown, the valve seat 13 is fixed inside the valve housing 12 to divide the space inside the valve housing 12 into a first cavity 121 and a second cavity 122 arranged in a first direction. The first cavity 121 is located on the side of the valve seat 13 facing the connecting pipe 2, and the second cavity 122 is located on the side of the valve seat 13 away from the connecting pipe 2.

[0037] The valve seat 13 has a valve cavity 134, a first valve port 131, a second valve port 132, and a third valve port 133. The first valve port 131 is located at the end of the valve cavity 134 facing the connector portion 11 and communicates with the first cavity 121. The second valve port 132 is located at the end of the valve cavity 134 away from the connector portion 11 and communicates with the second cavity 122. The third valve port 133 is located on the peripheral wall of the valve seat 13 and is used to connect the valve cavity 134 and the first cavity 121. The diameter of the projection of the space defined by the valve housing 12 in the first direction is larger than the aperture of the first valve port 131, the second valve port 132, and the third valve port 133.

[0038] The valve core 14 is located in the valve cavity 134 and is movable in the first direction. The valve core 14 has a flow reduction hole 141, which penetrates the valve core 14 in the first direction. The diameter of the flow reduction hole 141 is smaller than the diameters of the first valve port 131, the second valve port 132 and the third valve port 133.

[0039] Furthermore, the valve core 14 has a first limit position and a second limit position. In the first limit position, the valve core 14 blocks the second valve port 132 and the third valve port 133 and is spaced apart from the first valve port 131. In the second limit position, as... Figure 4 As shown, the valve core 14 blocks the first valve port 131 and is spaced apart from the second valve port 132 and the third valve port 133.

[0040] It is understandable that during the process of refrigerant flowing from the second chamber 122 to the first chamber 121, such as Figure 4 As shown, the refrigerant enters the valve chamber 134 from the second chamber 122 through the second valve port 132, and pushes the valve core 14 to the second limit position. A portion of the refrigerant in the valve chamber 134 directly enters the first chamber 121 through the third valve port 133, while the other portion of the refrigerant flows to the first chamber 121 through the flow-reducing hole 141 and the first valve port 131. Since the diameter of the second valve port 132 is smaller than the diameter of the projection of the space defined by the valve shell 12 in the first direction, the flow rate of the refrigerant flowing out from the first valve port 131 can be reduced, thus achieving the effect of throttling.

[0041] During the process of refrigerant flowing from the first cavity 121 to the second cavity 122, the refrigerant enters the valve cavity 134 from the first cavity 121 through the first valve port 131 and pushes the valve core 14 to the first limit position. At this time, the flow reduction orifice 141 is opposite to the second valve port 132. The refrigerant in the valve cavity 134 can flow from the second valve port 132 to the second cavity 122 through the flow reduction orifice 141. Since the orifice diameter of the flow reduction orifice 141 is smaller than the orifice diameter of the first valve port 131, the refrigerant flow rate flowing out from the flow reduction orifice 141 can be relatively reduced, thereby reducing the refrigerant flow rate flowing out from the second valve port 132 and further achieving throttling.

[0042] It is understandable that the valve core 14 can be moved within the valve cavity 134 by the refrigerant, so that the valve core 14 and the different inner walls of the valve cavity 134 can be abutted. There is no need to set up an additional driving device to drive the valve core 14 to move, which can relatively reduce the production cost of valve structure 1.

[0043] According to the embodiment of the present invention, the valve assembly 10 indirectly connects the stainless steel refrigerant heat dissipation pipe 3 to the copper connector 11 through the copper connecting pipe 2. The supplier directly provides the welded connecting pipe 2 and refrigerant heat dissipation pipe 3 to the air conditioner 100 manufacturer. The air conditioner 100 manufacturer only needs to weld the copper connecting pipe 2 to the copper connector 11. The process is mature and simple, and there is no need to change the welding equipment. While ensuring the normal connection between the refrigerant heat dissipation pipe 3 and the connector 11, the production efficiency of the valve assembly 10 can be improved as much as possible, the production and processing cost of the valve assembly 10 can be reduced, and the production cost of the air conditioner 100 can be reduced. By dividing the refrigerant heat dissipation pipe 3 into a first section 31 and a second section 32, with the outer diameter of the first section 31 being larger than that of the second section 32, the outer diameter of the part of the refrigerant heat dissipation pipe 3 that connects to the connecting pipe 2 can be increased, making it easier to connect the first section 31 to the connecting pipe 2. This avoids the situation where the connection cannot be made due to a large difference between the outer diameter of the first section 31 and the inner diameter of the connecting pipe 2. On the basis of ensuring a normal connection between the first section 31 and the connecting pipe 2, the production and processing cost of the valve assembly 10 can be further reduced.

[0044] In some embodiments of this utility model, reference is made to the appendix. Figure 1 As shown, the second segment 32 includes a first sub-segment 321 and a second sub-segment 322. The first sub-segment 321 is connected between the first segment 31 and the second sub-segment 322. In the direction from the first segment 31 to the second segment 32, the diameter of the first sub-segment 321 gradually decreases. It can be understood that the second sub-segment 322 is the original size of the stainless steel pipe. In order to facilitate the connection between the refrigerant heat dissipation pipe 3 and the connecting pipe 2, the outer diameter of the first segment 31 is enlarged. As the connecting segment between the first segment 31 and the second sub-segment 322, the first sub-segment 321 can gradually transition to the outer diameter of the second sub-segment 322, avoid abrupt changes in the flow direction of the refrigerant in the refrigerant heat dissipation pipe 3, reduce the impact of the refrigerant on the inner wall of the refrigerant heat dissipation pipe 3, make the inner wall of the refrigerant heat dissipation pipe 3 uniformly stressed, and ensure the service life of the refrigerant heat dissipation pipe 3.

[0045] In some embodiments of this utility model, reference is made to the appendix. Figure 2 and attached Figure 3 As shown, the first segment 31 passes through the connecting pipe 2. At least one of the outer peripheral wall of the first segment 31 and the inner peripheral wall of the connecting pipe 2 is provided with a plurality of grooves 311, all of which are along the axial direction of the first segment 31 (see attached figure). Figure 2The groove 311 extends along the circumferential direction of the first segment 31 and is spaced apart. The groove 311 penetrates the first segment 31 along the axial direction of the first segment 31. The second solder fills the groove 311, which facilitates the second solder to extend along the extension direction of the groove 311 when welding the first segment 31 and the connecting pipe 2 (see attached figure). Figure 2 The flow (in the first direction shown) makes the second solder between the outer peripheral wall of the first section 31 and the inner peripheral wall of the connecting pipe 2 more uniform, which facilitates the welding connection between the first section 31 and the connecting pipe 2 and ensures the reliability and stability of the welding connection between the refrigerant heat dissipation pipe 3 and the connecting pipe 2.

[0046] For example, multiple grooves 311 may be provided only on the outer peripheral wall of the first segment 31, or multiple grooves 311 may be provided only on the inner peripheral wall of the connecting pipe 2, or multiple grooves 311 may be provided on both the outer peripheral wall of the first segment 31 and the inner peripheral wall of the connecting pipe 2.

[0047] It should be noted that, as Figure 2 As shown, the multiple grooves 311 are created by adding a wire drawing process to the outer peripheral wall of the first section 31. On the one hand, the wire drawing process can refine the grain structure of the stainless steel surface, form a denser oxide film, and improve the resistance of the first section 31 to corrosive media. On the other hand, the wire drawing process can improve the wear resistance of the first section 31 and resist the scratches or wear of the refrigerant heat dissipation pipe 3 during transportation and installation.

[0048] In some embodiments of this utility model, reference is made to the appendix. Figure 1 As shown, the first segment 31 passes through the connecting pipe 2, and the connecting pipe 2 includes sections along the axial direction (see attached diagram). Figure 1 The third segment 21 and the fourth segment 22 (shown in the first direction) are arranged and connected. The inner diameter of the third segment 21 is smaller than that of the fourth segment 22. A portion of the third segment 21 extends into the connector 11. The fourth segment 22 is fitted over the first segment 31 and welded to the first segment 31. This can expand the outer diameter of the part of the connecting pipe 2 that connects to the refrigerant heat dissipation pipe 3, making it easier for the first segment 31 to extend into the fourth segment 22 and facilitating the connection between the connecting pipe 2 and the refrigerant heat dissipation pipe 3. Furthermore, since the inner diameter of the third segment 21 is smaller than that of the fourth segment 22, the third segment 21 can also position the first segment 31, limiting the depth of the first segment 31 inserted into the fourth segment 22, ensuring the overlap length of the first segment 31 and the fourth segment 22 in the axial direction of the connecting pipe 2, and ensuring the reliability of the welded connection between the refrigerant heat dissipation pipe 3 and the connecting pipe 2.

[0049] Further, see Appendix Figure 1As shown, the third segment 21 includes a third sub-segment 211 and a fourth sub-segment 212. The fourth sub-segment 212 connects the third sub-segment 211 and the fourth segment 22. In the direction from the third segment 21 to the fourth segment 22, the diameter of the fourth sub-segment 212 gradually increases. It can be understood that the third sub-segment 211 is the original size of the connecting pipe 2. In order to facilitate the connection between the refrigerant heat dissipation pipe 3 and the connecting pipe 2, the inner diameter of the fourth segment 22 is enlarged. As the connecting segment between the third sub-segment 211 and the fourth segment 22, the fourth sub-segment 212 allows the inner diameter of the third sub-segment 211 to gradually transition to the inner diameter of the fourth segment 22, avoiding abrupt changes in the flow direction of the refrigerant in the connecting pipe 2, reducing the impact of the refrigerant on the inner wall of the connecting pipe 2, making the inner wall of the connecting pipe 2 uniformly stressed, and ensuring the service life of the connecting pipe 2.

[0050] In a further embodiment of this utility model, reference is made to the appendix. Figure 1 As shown, along the axial direction of the first segment 31 (see attached diagram). Figure 1 (As shown in the first direction), the outer diameter of the first segment 31 remains unchanged, and / or, along the axial direction of the fourth segment 22 (see attached). Figure 1 (As shown in the first direction), the inner diameter of the fourth segment 22 remains unchanged, which facilitates the production and processing of the first segment 31 and the fourth segment 22, making the gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22 uniform, and ensuring the connection between the first segment 31 and the fourth segment 22.

[0051] In a further embodiment of this utility model, reference is made to the appendix. Figure 1 As shown, along the axial direction of the third segment 21 (see attached diagram). Figure 1 (As shown in the first direction), the outer diameter of the third segment 21 remains unchanged, and / or, along the axial direction of the joint portion 11 (see attached diagram). Figure 1 (As shown in the first direction), the inner diameter of the connector 11 remains unchanged, which facilitates the production and processing of the third section 21 and the connector 11, making the gap between the outer peripheral wall of the third section 21 and the inner peripheral wall of the connector 11 uniform, and ensuring the connection between the third section 21 and the connector 11.

[0052] In a further embodiment of this utility model, the single-sided gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22 is 0mm-0.05mm. This ensures that the first segment 31 can extend normally into the fourth segment 22 while preventing the gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22 from being too large. This prevents the second solder from flowing into the interior of the refrigerant heat dissipation pipe 3 and the connecting pipe 2, and prevents the second solder from blocking the internal space of the refrigerant heat dissipation pipe 3 and the connecting pipe 2, thus ensuring that the refrigerant can flow normally within the refrigerant heat dissipation pipe 3 and the connecting pipe 2. For example, the single-sided gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22 can be 0mm, 0.01mm, 0.02mm, 0.03mm, 0.04mm, or 0.05mm.

[0053] Furthermore, the bilateral gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22 is 0mm-0.1mm. This ensures that the first segment 31 can extend normally into the fourth segment 22 while preventing the gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22 from being too large. This prevents the second solder from flowing into the interior of the refrigerant heat dissipation pipe 3 and the connecting pipe 2, and prevents the second solder from blocking the internal space of the refrigerant heat dissipation pipe 3 and the connecting pipe 2, thus ensuring that the refrigerant can flow normally within the refrigerant heat dissipation pipe 3 and the connecting pipe 2. For example, the bilateral gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22 can be 0mm, 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, or 0.1mm.

[0054] Furthermore, the distance difference between the outer diameter of the first segment 31 and the inner diameter of the fourth segment 22 is 0mm-0.1mm. This ensures that the first segment 31 can extend normally into the fourth segment 22 while preventing excessive gaps between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22. This prevents the second solder from flowing into the interior of the refrigerant heat dissipation pipe 3 and the connecting pipe 2, and prevents the second solder from blocking the internal space of the refrigerant heat dissipation pipe 3 and the connecting pipe 2, thus ensuring normal flow of refrigerant within them. For example, the distance difference between the outer diameter of the first segment 31 and the inner diameter of the fourth segment 22 can be 0mm, 0.01mm, 0.02mm, 0.03mm, 0.04mm, 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, or 0.1mm.

[0055] Furthermore, the interference fit or transition fit between the outer peripheral wall of the first section 31 and the inner peripheral wall of the fourth section 22 can ensure the reliability of the connection between the refrigerant heat dissipation pipe 3 and the connecting pipe 2, and improve the stability and reliability of the valve assembly 10.

[0056] It should be noted that when a wire drawing process is added to the outer peripheral wall of the first segment 31, and multiple grooves 311 are provided on the outer peripheral wall of the first segment 31, the single-sided gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22, the double-sided gap between the outer peripheral wall of the first segment 31 and the inner peripheral wall of the fourth segment 22, and the distance difference between the outer diameter of the first segment 31 and the inner diameter of the fourth segment 22 are all calculated based on the position where no grooves 311 are provided on the outer peripheral wall of the first segment 31.

[0057] In some embodiments of this utility model, reference is made to the appendix. Figure 1 and attached Figure 5As shown, the valve housing 12 has a positioning protrusion 111 on its inner peripheral wall. The connecting pipe 2 is located on the side of the positioning protrusion 111 facing the refrigerant heat dissipation pipe 3 and abuts against the positioning protrusion 111. During the assembly of the valve assembly 10, the connecting pipe 2 is directly inserted into the valve housing 12. The positioning protrusion 111 can position the connecting pipe 2, limit the depth of the connecting pipe 2 inserted into the valve housing 12, ensure the overlap length between the connecting pipe 2 and the valve housing 12 in the axial direction of the valve housing 12, and ensure the reliability of the welding connection between the connecting pipe 2 and the connector 11.

[0058] It should be noted that the positioning protrusion 111 can be provided on the connector 11 or on the part of the valve body 12 other than the connector 11. No further restrictions are made here.

[0059] In a specific example, see Appendix Figure 5 As shown, in conjunction with the reference appendix Figure 4 The valve shell 12 can be further processed based on the existing valve structure 1. By applying external force to the valve shell 12, the peripheral wall of the valve shell 12 is deformed, and a recessed part 112 is generated on the outer peripheral wall of the valve shell 12 that is recessed radially inward. Correspondingly, a positioning protrusion 111 appears on the inner peripheral wall of the valve shell 12. The positioning protrusion 111 and the recessed part 112 are arranged opposite to each other in the radial direction of the valve shell 12. Thus, there is no need to redevelop a new valve structure 1, which can reduce the manufacturing difficulty of the valve structure 1, reduce the manufacturing steps of the valve assembly 10, and simplify the manufacturing process of the valve assembly 10.

[0060] In a further embodiment of this utility model, the positioning protrusions 111 are multiple protrusions spaced apart along the circumferential direction of the valve housing 12. They can position the connecting pipe 2 from multiple points along the circumferential direction, limit the depth of the connecting pipe 2 inserted into the valve housing 12, further ensure the overlap length between the connecting pipe 2 and the valve housing 12 in the axial direction of the valve housing 12, and ensure the reliability of the welded connection between the connecting pipe 2 and the valve housing 12. For example, the positioning protrusions 111 can be convex points or arc-shaped protrusions extending along the circumferential direction of the valve housing 12. The positioning protrusions 111 can be two, three, four, or five spaced apart along the circumferential direction of the valve housing 12.

[0061] Alternatively, the positioning protrusion 111 extends in a ring shape along the circumferential direction of the valve housing 12, and the surfaces of the connecting pipe 2 and the positioning protrusion 111 are in contact with each other, which can better position the connecting pipe 2, limit the depth of the connecting pipe 2 inserted into the valve housing 12, further ensure the overlap length between the connecting pipe 2 and the valve housing 12 in the axial direction of the valve housing 12, and ensure the reliability of the welded connection between the connecting pipe 2 and the valve housing 12.

[0062] In some embodiments of this utility model, reference is made to the appendix. Figure 1As shown, the refrigerant heat dissipation pipe 3 is located on the side of the connecting pipe 2 away from the joint 11. Along the axial direction of the connecting pipe 2, the distance between the first section 31 and the joint 11 is H1, and satisfies: H1≥0mm. This avoids the overlap of the three pipes: refrigerant heat dissipation pipe 3, connecting pipe 2 and joint 11. It also avoids increasing the welding difficulty between the refrigerant heat dissipation pipe 3 and the connecting pipe 2 and the joint 11 due to the different heat dissipation capacities between the pipes. This ensures normal welding between the refrigerant heat dissipation pipe 3 and the connecting pipe 2, and between the connecting pipe 2 and the joint 11.

[0063] In some embodiments of this utility model, one end of the connecting pipe 2 is inserted into the joint portion 11, and the first solder fills the space between the outer peripheral wall of the connecting pipe 2 and the inner peripheral wall of the valve housing 12.

[0064] The single-sided gap between the outer peripheral wall of the connecting pipe 2 and the inner peripheral wall of the connector 11 is 0.05mm-0.15mm. This ensures that the connecting pipe 2 can be inserted normally into the connector 11, while preventing the gap between the outer peripheral wall of the connecting pipe 2 and the inner peripheral wall of the connector 11 from being too large. This prevents the first solder from flowing into the interior of the connecting pipe 2 and the connector 11 and from blocking the internal space of the connecting pipe 2 and the connector 11, thus ensuring that the refrigerant can flow normally within the connecting pipe 2 and the connector 11. For example, the single-sided gap between the outer peripheral wall of the connecting pipe 2 and the inner peripheral wall of the connector 11 can be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, 0.11mm, 0.12mm, 0.13mm, 0.14mm, or 0.15mm.

[0065] Furthermore, the bilateral gap between the outer peripheral wall of the connecting pipe 2 and the inner peripheral wall of the connector 11 is 0.1mm-0.3mm. This ensures that the connecting pipe 2 can extend normally into the connector 11 while preventing the gap between the outer peripheral wall of the connecting pipe 2 and the inner peripheral wall of the connector 11 from being too large. This prevents the first solder from flowing into the interior of the connecting pipe 2 and the connector 11 and from blocking the internal space of the connecting pipe 2 and the connector 11, thus ensuring that the refrigerant can flow normally within the connecting pipe 2 and the connector 11. For example, the bilateral gap between the outer peripheral wall of the connecting pipe 2 and the inner peripheral wall of the connector 11 can be 0.1mm, 0.15mm, 0.2mm, 0.25mm, or 0.3mm.

[0066] Furthermore, the distance difference between the outer diameter of the connecting pipe 2 and the inner diameter of the connector 11 is 0.1mm-0.3mm. This ensures that the connecting pipe 2 can extend normally into the connector 11 while preventing excessive gaps between the outer peripheral wall of the connecting pipe 2 and the inner peripheral wall of the connector 11. This prevents the first solder from flowing into the interior of the connecting pipe 2 and the connector 11 and from blocking the internal space of the connecting pipe 2 and the connector 11, thus ensuring the normal flow of refrigerant within the connecting pipe 2 and the connector 11. For example, the distance difference between the outer diameter of the connecting pipe 2 and the inner diameter of the connector 11 can be 0.1mm, 0.15mm, 0.2mm, 0.25mm, or 0.3mm.

[0067] In some embodiments of this utility model, the valve body 12 is made of copper, and the connector 11 and the parts of the valve body 12 other than the connector 11 are made of the same material. The valve body 12 is an integral structure, which can simplify the production process of the valve body 12 and reduce the production and processing difficulty of the valve body 12.

[0068] Alternatively, the parts of the valve housing 12 other than the connector 11 may be made of stainless steel, and the parts of the valve housing 12 other than the connector 11 may be welded to the connector 11. By further reducing the amount of copper used in the valve assembly 10 and selecting relatively inexpensive stainless steel, the production cost of the valve assembly 10 can be effectively reduced, thereby reducing the production cost of the air conditioner 100.

[0069] For example, when the part of the valve body 12 other than the joint portion 11 is made of stainless steel, a plurality of second grooves can be provided on at least one of the parts of the valve body 12 other than the joint portion 11 and the wall surface of the joint portion 11 facing each other. The plurality of second grooves extend along the axial direction of the joint portion 11 and are spaced apart in the circumferential direction of the joint portion 11. When welding the parts of the valve body 12 other than the joint portion 11 and the joint portion 11, the solder can flow along the extension direction of the second grooves, making the solder between the parts of the valve body 12 other than the joint portion 11 and the joint portion 11 more uniform, which facilitates the welding connection between the parts of the valve body 12 other than the joint portion 11 and the joint portion 11, and ensures the reliability and stability of the valve body 12.

[0070] It should be noted that multiple second grooves can also be produced by a wire drawing process. On the one hand, the wire drawing process can refine the grain structure of the copper surface, form a denser oxide film, and improve the resistance of the valve body 12 to corrosive media. On the other hand, the wire drawing process can improve the wear resistance of the valve body 12 and resist scratches or wear of the valve body 12 during transportation and installation.

[0071] In some embodiments of this utility model, reference is made to the appendix. Figure 1As shown, the first section 31 is inserted into the connecting pipe 2, and one end of the connecting pipe 2 is inserted into the joint 11. The inner diameter of the second section 32 is smaller than the inner diameter of the connecting pipe 2. The inner diameter of the connecting pipe 2 is smaller than the inner diameter of the joint 11. This can reduce the diameter of the refrigerant heat dissipation pipe 3, reduce the material used in the refrigerant heat dissipation pipe 3, save the material cost of the valve assembly 10, and further reduce the production cost of the valve assembly 10.

[0072] In some embodiments of this utility model, the melting point of the first solder is lower than that of the second solder, and / or the minimum distance between the first solder and the valve core 14 is less than that between the second solder and the valve core 14. On the one hand, the first solder, with its lower melting point, can melt at a relatively low temperature, so that excessively high heating temperatures are not required when welding the connecting pipe 2 to the joint 11, thereby making the welding operation simpler, reducing the technical requirements for the welder, and improving welding efficiency. On the other hand, due to the low welding temperature, the range and time of heating of the weldment can be effectively controlled, thereby reducing the heat-affected zone and reducing the deformation of the valve core 14 caused by the high welding temperature, ensuring the normal operation of the valve structure 1.

[0073] Furthermore, the minimum distance between the valve core 14 and the first solder is greater than or equal to 15mm, or the minimum distance between the solder joint of the connector 11 and the connecting pipe 2 and the valve core 14 is greater than or equal to 15mm. This can prevent the distance between the valve core 14 and the solder joint from being too close, and prevent the valve core 14 from being deformed due to excessive temperature during the welding operation. This can ensure the reliability and stability of the valve core 14, ensure that the valve core 14 can move within the valve body 12, and extend the service life of the valve structure 1.

[0074] In some embodiments of this utility model, reference is made to the appendix. Figure 4 As shown, the valve structure 1 also includes a filter screen 15 installed in the valve housing 12. The filter screen 15 is located between the valve core 14 and the connector 11, and can filter the refrigerant to keep the refrigerant clean and prevent impurities carried by the refrigerant from clogging the first valve port 131, the second valve port 132, the third valve port 133 or the flow reduction hole 141, thus ensuring smooth refrigerant flow inside the valve structure 1.

[0075] Furthermore, the minimum distance between the filter screen 15 and the first solder is greater than or equal to 10mm, or the minimum distance between the solder joint of the connector 11 and the connecting pipe 2 and the filter screen 15 is greater than or equal to 10mm. This can prevent the distance between the filter screen 15 and the solder joint from being too close, and prevent the filter screen 15 from being deformed due to excessive temperature during the soldering operation. This can ensure the reliability and stability of the filter screen 15, extend the service life of the filter screen 15, and ensure the cleaning effect of the filter screen 15 on the refrigerant.

[0076] In a specific example, see Appendix Figure 4As shown, there are two filters 15, both of which are fixed inside the valve housing 12 and located on both sides of the valve seat 13 along the first direction. Regardless of whether the refrigerant flows from the first cavity 121 to the second cavity 122 or from the second cavity 122 to the first cavity 121 in the valve structure 1, it can ensure that the refrigerant entering the valve seat 13 is relatively clean, and prevent impurities carried by the refrigerant from clogging the first valve port 131, the second valve port 132, the third valve port 133 or the flow reduction hole 141, thus ensuring that the refrigerant flows smoothly inside the valve structure 1.

[0077] This utility model also proposes an air conditioner 100 having the valve assembly 10 of the above embodiments.

[0078] like Figure 6 As shown, the air conditioner 100 according to an embodiment of the present utility model includes the valve assembly 10, the shut-off valve 20, the high-pressure copper pipe 30, the refrigerant heat dissipation structure 40, and electronic components described above.

[0079] Specifically, see the attached document. Figure 6 As shown, the two ends of the high-pressure copper pipe 30 along its length are connected to the shut-off valve 20 and the end of the valve structure 1 that is away from the refrigerant heat dissipation pipe 3, respectively. Part of the refrigerant heat dissipation pipe 3 is fixed on the refrigerant heat dissipation structure 40. The electronic component is an electronic control box. The refrigerant heat dissipation structure 40 enables the refrigerant heat dissipation pipe 3 to contact the electronic control box, so that the refrigerant in the refrigerant heat dissipation pipe 3 can exchange heat with the electronic control box, cool down the electronic control box, prevent the electronic control box from failing, and extend the service life of the air conditioner 100.

[0080] According to the embodiment of the present invention, the air conditioner 100 is provided with the above-mentioned valve assembly 10. The stainless steel refrigerant heat dissipation pipe 3 is indirectly connected to the copper connector 11 through the copper connecting pipe 2. The supplier directly provides the welded connecting pipe 2 and refrigerant heat dissipation pipe 3 to the air conditioner 100 manufacturer. The air conditioner 100 manufacturer only needs to weld the copper connecting pipe 2 to the copper connector 11. The process is mature and simple, and there is no need to change the welding equipment. While ensuring the normal connection between the refrigerant heat dissipation pipe 3 and the connector 11, the production efficiency of the valve assembly 10 can be improved as much as possible, the production and processing cost of the valve assembly 10 can be reduced, and the production cost of the air conditioner 100 can be reduced. By dividing the refrigerant heat dissipation pipe 3 into a first section 31 and a second section 32, with the outer diameter of the first section 31 being larger than that of the second section 32, the outer diameter of the part of the refrigerant heat dissipation pipe 3 that connects to the connecting pipe 2 can be increased, making it easier to connect the first section 31 to the connecting pipe 2. This avoids the situation where the connection cannot be made due to a large difference between the outer diameter of the first section 31 and the inner diameter of the connecting pipe 2. On the basis of ensuring a normal connection between the first section 31 and the connecting pipe 2, the production and processing cost of the valve assembly 10 can be further reduced.

[0081] Other configurations and operations of the valve assembly 10 and the air conditioner 100 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0082] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0083] 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 valve assembly, characterized in that, include: A valve structure, comprising a valve housing and a valve core, wherein the valve housing includes a connector portion, the connector portion being a copper component, and the valve core being movably disposed within the valve housing; A connecting pipe, one end of which is welded to the joint by a first solder, wherein the connecting pipe is a copper pipe; The refrigerant heat dissipation pipe includes a first section and a second section arranged and connected along the axial direction of the refrigerant heat dissipation pipe. The outer diameter of the first section is larger than the outer diameter of the second section. The first section is welded to the end of the connecting pipe opposite to the joint by a second solder. The refrigerant heat dissipation pipe is a stainless steel pipe. The refrigerant heat dissipation pipe is used for heat transfer connection with the electronic components of the air conditioner.

2. The valve assembly according to claim 1, characterized in that, The second segment includes a first sub-segment and a second sub-segment, with the first sub-segment connecting the first segment and the second sub-segment. In the direction from the first segment to the second segment, the diameter of the first sub-segment gradually decreases.

3. The valve assembly according to claim 1, characterized in that, The first segment is inserted into the connecting pipe. At least one of the outer peripheral wall of the first segment and the inner peripheral wall of the connecting pipe is provided with a plurality of grooves. The plurality of grooves extend along the axial direction of the first segment and are spaced apart in the circumferential direction of the first segment. The second solder fills the grooves.

4. The valve assembly according to claim 1, characterized in that, The first section is inserted into the connecting pipe, which includes a third section and a fourth section arranged and connected along the axial direction of the connecting pipe. The inner diameter of the third section is smaller than the inner diameter of the fourth section. A portion of the third section extends into the joint portion. The fourth section is sleeved outside the first section and welded to the first section.

5. The valve assembly according to claim 4, characterized in that, Along the axial direction of the first segment, the outer diameter of the first segment remains unchanged; And / or, along the axial direction of the fourth segment, the inner diameter of the fourth segment remains unchanged.

6. The valve assembly according to claim 4, characterized in that, The single-sided gap between the outer peripheral wall of the first segment and the inner peripheral wall of the fourth segment is 0mm-0.05mm; And / or, the bilateral gap between the outer peripheral wall of the first segment and the inner peripheral wall of the fourth segment is 0mm-0.1mm; And / or, the distance difference between the outer diameter of the first segment and the inner diameter of the fourth segment is 0mm-0.1mm; And / or, the outer peripheral wall of the first segment and the inner peripheral wall of the fourth segment are either interference fit or transition fit.

7. The valve assembly according to any one of claims 1-6, characterized in that, The valve housing has a positioning protrusion on its inner peripheral wall, and the connecting pipe is located on the side of the positioning protrusion facing the refrigerant heat dissipation pipe and abuts against the positioning protrusion.

8. The valve assembly according to claim 7, characterized in that, The positioning protrusions are a plurality of those spaced apart along the circumferential direction of the valve housing, or the positioning protrusions extend in a ring shape along the circumferential direction of the valve housing.

9. The valve assembly according to any one of claims 1-6, characterized in that, The refrigerant heat dissipation pipe is located on the side of the connecting pipe away from the joint. Along the axial direction of the connecting pipe, the distance between the first segment and the joint is H1, and satisfies: H1≥0mm.

10. The valve assembly according to any one of claims 1-6, characterized in that, One end of the connecting pipe passes through the joint, and the first solder fills the space between the outer peripheral wall of the connecting pipe and the inner peripheral wall of the valve body. The single-sided gap between the outer peripheral wall of the connecting pipe and the inner peripheral wall of the joint is 0.05mm-0.15mm; And / or, the bilateral gap between the outer peripheral wall of the connecting pipe and the inner peripheral wall of the joint is 0.1mm-0.3mm; And / or, the distance difference between the outer diameter of the connecting pipe and the inner diameter of the joint is 0.1mm-0.3mm.

11. The valve assembly according to any one of claims 1-6, characterized in that, The valve housing is made of copper and is a one-piece structure; Alternatively, the portion of the valve housing other than the connector may be made of stainless steel, and the portion of the valve housing other than the connector may be welded to the connector.

12. The valve assembly according to any one of claims 1-6, characterized in that, The first section is inserted inside the connecting pipe, one end of the connecting pipe is inserted inside the joint, and the inner diameter of the second section is smaller than the inner diameter of the connecting pipe, and the inner diameter of the connecting pipe is smaller than the inner diameter of the joint.

13. The valve assembly according to any one of claims 1-6, characterized in that, The melting point of the first solder is lower than that of the second solder; And / or, the minimum distance between the first solder and the valve core is less than the minimum distance between the second solder and the valve core; And / or, the minimum distance between the valve core and the first solder is greater than or equal to 15mm, or, the minimum distance between the solder joint of the connector and the connecting pipe and the valve core is greater than or equal to 15mm.

14. The valve assembly according to any one of claims 1-6, characterized in that, The valve structure also includes a filter screen installed inside the valve housing, the filter screen being located between the valve core and the connector, the minimum distance between the filter screen and the first solder being greater than or equal to 10 mm, or the minimum distance between the solder joint of the connector and the connecting pipe and the filter screen being greater than or equal to 10 mm.

15. An air conditioner, characterized in that, Includes the valve assembly according to any one of claims 1-14.

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