Valve assembly, heat exchange device and air conditioner

Abstract

This utility model discloses a valve assembly, a heat exchange device, and an air conditioner. The valve assembly includes: a valve island, which is made of aluminum and has an opening and a flow channel communicating with the opening; and piping, which includes a connecting section and a main body section. The connecting section is made of stainless steel and is welded to the opening. According to this utility model, the piping and the valve island are firmly welded together. Compared with other connection methods, the welded connection has higher strength and sealing performance, effectively reducing the risk of leakage. Furthermore, in a vibration environment, the welded connection is more reliable and less prone to loosening, effectively reducing vibration noise. At the same time, the welded connection can reduce the number of connecting parts, simplify the valve assembly structure, and further contribute to the miniaturization design of the 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, heat exchange device and air conditioner. Background Technology

[0002] To achieve miniaturization and centralization of air conditioners, electronic expansion valves, four-way valves, and heat exchangers are typically integrated into modular components. Vibration can cause stress relaxation at the connection points of various components within the modular components, thereby inducing vibration noise and increasing the risk of leakage. 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 that effectively reduces the risk of leakage, is not easily loosened in a vibration environment, and effectively reduces vibration noise.

[0004] This utility model also proposes a heat exchange device, which includes the valve assembly described above.

[0005] This utility model also proposes an air conditioner, which includes the heat exchange device described above.

[0006] A valve assembly according to an embodiment of the present invention includes: a valve island, which is an aluminum component and has an opening and a flow channel communicating with the opening; and a piping, which includes a connecting section and a main body section, wherein the connecting section is a stainless steel component and is welded to the opening.

[0007] According to the valve assembly of this utility model embodiment, the valve island is made of aluminum and has an opening and a flow channel communicating with the opening. The piping includes a main body section and a connecting section. The connecting section is made of stainless steel and is welded to the opening to firmly connect the piping and the valve island together. Compared with other connection methods, the welded connection has higher strength and sealing performance, effectively reducing the risk of leakage. In a vibration environment, the welded connection is more reliable and less prone to loosening, effectively reducing vibration noise. At the same time, the welded connection can reduce the number of connecting parts, simplify the valve assembly structure, and further contribute to the miniaturization design of the valve assembly.

[0008] In some embodiments of this utility model, the connecting segment extends into the opening and is welded to the inner peripheral wall of the opening.

[0009] In some embodiments of this utility model, the inner peripheral wall of the opening has a mounting groove, the mounting groove extends to the outer wall surface of the valve island, the mounting groove extends along the circumferential direction of the opening, and the connecting section is located in the mounting groove and welded to the wall surface of the mounting groove opposite to the center line of the opening.

[0010] In some embodiments of this utility model, the end of the connecting segment away from the main body segment abuts against the wall surface of the mounting groove facing outward from the opening.

[0011] In some embodiments of this utility model, the connecting segment has a flange extending toward the direction away from the central axis of the connecting segment at one end opposite to the main body segment, and the flange is welded to the valve island.

[0012] In some embodiments of this utility model, the connecting section passes through the opening, and the flange is welded to the inner wall of the flow channel.

[0013] In some embodiments of this utility model, the connecting section is located outside the flow channel, and the flange is welded to the outer wall surface of the flow channel.

[0014] In some embodiments of this utility model, the main body segment is made of stainless steel, and the main body segment and the connecting segment are an integral piece.

[0015] In some embodiments of this utility model, the pipe diameter of the main body section and the pipe diameter of the connecting section are the same.

[0016] In some embodiments of this utility model, the main body segment is a copper component, and the main body segment and the connecting segment are welded together.

[0017] In some embodiments of this utility model, the connecting segment is sleeved outside the main body segment, and the inner wall surface of the connecting segment is welded to the outer wall surface of the main body segment; or, the main body segment is sleeved outside the connecting segment, and the inner wall surface of the main body segment is welded to the outer wall surface of the connecting segment.

[0018] In some embodiments of this utility model, when the connecting segment is sleeved outside the main body segment, the connecting segment includes: a first segment, which is welded to the valve island; a second segment, which is arranged along the length of the connecting segment and the first segment, the second segment being sleeved outside the main body segment, and the diameter of the second segment being larger than the diameter of the first segment; and a first transition segment, which is connected between the first segment and the second segment, the end of the main body segment near the valve island abutting against the inner wall of the first transition segment, and the main body segment being welded to the second segment and the first transition segment respectively.

[0019] In some embodiments of this utility model, when the main body segment is fitted outside the connecting segment, the main body segment includes: a third segment; a fourth segment, wherein the fourth segment and the third segment are arranged along the length direction of the main body segment, the fourth segment is fitted outside the connecting segment, and the diameter of the fourth segment is larger than the diameter of the third segment; a second transition segment, wherein the second transition segment is connected between the third segment and the fourth segment, and the end of the connecting segment facing away from the valve island abuts against the inner wall surface of the second transition segment, and the connecting segment is welded to the fourth segment and the second transition segment respectively.

[0020] In some embodiments of this utility model, the melting point of the solder used to weld the main body segment and the connecting segment is lower than the melting point of the solder used to weld the connecting segment and the valve island.

[0021] In some embodiments of this utility model, the piping is one or more.

[0022] In some embodiments of this utility model, it further includes: an electronic expansion valve, wherein the end of the main body segment opposite to the connecting segment is connected to the electronic expansion valve.

[0023] In some embodiments of this utility model, the electronic expansion valve includes a stainless steel connecting pipe, the main body section is a copper component, and the connecting pipe is soldered to the main body section; and / or, the electronic expansion valve includes a copper connecting pipe, the main body section is a copper or stainless steel component, and the connecting pipe is soldered to the main body section.

[0024] In some embodiments of this utility model, it further includes: a four-way valve, wherein the end of the main body section opposite to the connecting section is connected to the four-way valve.

[0025] In some embodiments of this utility model, the four-way valve includes a stainless steel connector pipe, the main body section is a copper component, and the connector pipe is welded to the main body section with solder; and / or, the four-way valve includes a copper connector pipe, the main body section is a copper or stainless steel component, and the connector pipe is welded to the main body section with solder.

[0026] In some embodiments of this utility model, a throttling valve cavity is formed in the flow channel, and the valve assembly further includes an electronic expansion valve. The electronic expansion valve includes a coil and a valve core. The valve core is disposed in the throttling valve cavity, and the coil is disposed outside the valve island and fixed to the valve island.

[0027] In some embodiments of this utility model, the valve island includes a body portion and a connector portion disposed on the body portion, the flow channel is formed in the body portion and the connector portion, at least one opening is formed on the connector portion and communicates with the flow channel, and the connecting section is welded to the connector portion.

[0028] In some embodiments of this utility model, the connector protrudes from the body and is formed as an annular boss, the end face of the connector is recessed downward to form a groove, the connecting segment is inserted into the groove and abuts against the bottom of the groove, and the side wall of the groove and the outer wall of the connecting segment are welded by solder; or, the connector protrudes from the body and is formed as a tube, and the connecting segment is welded to the outer or inner surface of the connector.

[0029] A heat exchange device according to an embodiment of the present invention includes: a heat exchanger; and the valve assembly described above, wherein the valve assembly is integrated into the heat exchanger.

[0030] According to the heat exchange device of this utility model embodiment, a valve assembly is provided. The valve island is made of aluminum and has an opening and a flow channel communicating with the opening. The piping includes a main body section and a connecting section. The end of the main body section opposite to the connecting section is connected to the heat exchanger. The connecting section is made of stainless steel and is welded to the opening to firmly connect the piping and the valve island together. Compared with other connection methods, the welded connection has higher strength and sealing performance, effectively reducing the risk of leakage. In a vibration environment, the welded connection is more reliable and less prone to loosening, effectively reducing vibration noise. At the same time, the welded connection can reduce the number of connecting parts, simplify the structure of the heat exchange device, and further contribute to the miniaturization design of the heat exchange device.

[0031] An air conditioner according to an embodiment of the present invention includes: a compressor; and the aforementioned heat exchange device, wherein at least one interface of the heat exchange device is connected to the compressor.

[0032] According to an embodiment of this utility model, the air conditioner is equipped with a heat exchange device. The valve island is made of aluminum and has an opening and a flow channel communicating with the opening. The piping includes a main body section and a connecting section. The end of the main body section facing away from the connecting section is connected to the heat exchanger. The connecting section is made of stainless steel and is welded to the opening to firmly connect the piping and the valve island together. Compared with other connection methods, welded connections have higher strength and sealing performance, effectively reducing the risk of leakage. Furthermore, in vibration environments, welded connections are more reliable and less prone to loosening, effectively reducing vibration noise. Simultaneously, welded connections can reduce the number of connecting parts, simplify the air conditioner structure, and further contribute to the miniaturization design of the air conditioner.

[0033] An air conditioner according to an embodiment of the present invention includes: a compressor; the valve assembly described above, wherein one end of the main body section opposite to the connecting section is connected to the connecting pipe of the air conditioner.

[0034] According to an embodiment of this utility model, an air conditioner is provided with a valve assembly. The end of the main body section facing away from the connecting section is connected to the air conditioner's connecting pipe. The valve island is made of aluminum and has an opening and a flow channel communicating with the opening. The piping includes a main body section and a connecting section. The end of the main body section facing away from the connecting section is connected to a heat exchanger. The connecting section is made of stainless steel and is welded to the opening to firmly connect the piping and the valve island. Compared to other connection methods, welded connections have higher strength and sealing performance, effectively reducing the risk of leakage. Furthermore, in environments with compressor vibration, welded connections are more reliable and less prone to loosening, effectively reducing vibration noise. Simultaneously, welded connections can reduce the number of connecting parts, simplify the air conditioner structure, and further contribute to the miniaturization design of the air conditioner.

[0035] 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

[0036] 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:

[0037] Figure 1 This is a partial cross-sectional view of the valve assembly according to the first embodiment of the present invention;

[0038] Figure 2 This is a partial cross-sectional view of the valve assembly according to the second embodiment of the present utility model;

[0039] Figure 3 This is a partial cross-sectional view of the valve assembly according to the third embodiment of the present invention;

[0040] Figure 4 This is a partial cross-sectional view of the valve assembly according to the fourth embodiment of the present utility model;

[0041] Figure 5 This is a partial cross-sectional view of the valve assembly according to the fifth embodiment of the present utility model;

[0042] Figure 6 This is a partial cross-sectional view of the valve assembly according to the sixth embodiment of the present utility model;

[0043] Figure 7 This is a partial cross-sectional view of the valve assembly according to the seventh embodiment of the present utility model;

[0044] Figure 8 This is a partial cross-sectional view of the valve assembly according to the eighth embodiment of the present utility model;

[0045] Figure 9 This is a partial cross-sectional view of the valve assembly according to the ninth embodiment of the present invention;

[0046] Figure 10 This is a structural diagram of a heat exchange device according to an embodiment of the present utility model;

[0047] Figure 11 This is a partial exploded view of the heat exchange device according to an embodiment of the present utility model;

[0048] Figure 12 This is a structural diagram of a heat exchange device according to another embodiment of the present invention;

[0049] Figure 13 This is a partial exploded view of a heat exchange device according to another embodiment of the present invention.

[0050] Figure label:

[0051] 1000. Heat exchange device;

[0052] 100. Valve assembly;

[0053] 1. Valve island; 11. Opening; 111. Mounting groove; 12. Flow channel;

[0054] 2. Piping; 21. Connecting section; 211. Flanged section; 212. First section; 213. Second section; 214. First transition section; 22. Main section; 221. Third section; 222. Fourth section; 223. Second transition section;

[0055] 3. Electronic expansion valve;

[0056] 4. Four-way valve;

[0057] 200. Heat exchanger;

[0058] 300. Gas-liquid separator. Detailed Implementation

[0059] 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.

[0060] 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.

[0061] 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.

[0062] The valve assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0063] like Figures 1-9 As shown, the valve assembly 100 according to an embodiment of the present invention includes a valve island 1 and a piping 2.

[0064] The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 connected to the opening 11. The piping 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel and is welded to the opening 11.

[0065] It is understood that valve island 1 has a flow channel 12, and piping 2 has a flow path. The flow channel 12 and the flow path are connected by welding the connecting section 21 to the opening 11, thereby enabling the medium in the flow path to be transported into the flow channel 12 or the medium in the flow channel 12 to be transported into the flow path. Specifically, one end of the main body section 22 is connected to the connecting section 21, and the other end can be connected to one of the compressor's exhaust pipe, heat exchanger 200, electronic expansion valve 3, and four-way valve 4, so that the compressor's exhaust pipe, heat exchanger 200, electronic expansion valve 3, or four-way valve 4 connected to the main body section 22 can be connected to the flow channel 12 of valve island 1 through piping 2.

[0066] The connecting section 21 is welded to the opening 11 to securely connect the piping 2 and the valve island 1. Compared to other connection methods, welded connections offer higher strength and sealing performance, effectively reducing the risk of leakage. Furthermore, the welded connection provides a smoother flow path, reducing flow resistance and improving the heat exchange efficiency of the heat exchange device 1000 using this valve assembly 100. Simultaneously, the welded connection reduces the number of connecting parts, simplifying the structure of the valve assembly 100 and further contributing to its miniaturization. Additionally, in vibration environments, welded connections are more reliable, less prone to loosening, and effectively reduce vibration noise.

[0067] Furthermore, since the potential difference between stainless steel and aluminum parts is smaller, the risk of corrosion is low and no additional protection is required. Stainless steel has high strength and resistance to deformation, making it suitable for high-stress scenarios. Therefore, by welding the connecting section 21 of the stainless steel parts to the valve island 1 of the aluminum parts, the connection between the piping 2 and the valve island 1 is further ensured to be firmly connected together.

[0068] For example, when the end of the main body section 22 away from the connecting section 21 is connected to the exhaust pipe of the compressor, the vibration of the compressor operation will be transmitted to the valve island 1 through the piping 2. The connecting section 21 is welded to the opening 11 so that the piping 2 and the valve island 1 are firmly connected together, ensuring the reliability of the connection between the two, thereby avoiding vibration noise or air leakage caused by loosening at the connection between the connecting section 21 and the valve island 1, and improving the overall reliability.

[0069] According to an embodiment of the present invention, the valve assembly 100 has an aluminum valve island 1 with an opening 11 and a flow channel 12 communicating with the opening 11. The piping 2 includes a main body section 22 and a connecting section 21, the connecting section 21 being made of stainless steel. The connecting section 21 is welded to the opening 11, so that the piping 2 and the valve island 1 are firmly connected together. Compared with other connection methods, the welded connection has higher strength and sealing performance, effectively reducing the risk of leakage. In a vibration environment, the welded connection is more reliable and less prone to loosening, effectively reducing vibration noise. At the same time, the welded connection can reduce the number of connecting parts, simplify the structure of the valve assembly 100, and further contribute to the miniaturization design of the valve assembly 100.

[0070] In some embodiments of this utility model, such as Figures 1-3 As shown, the connecting section 21 extends into the opening 11 and is welded to the inner peripheral wall of the opening 11. This arrangement increases the contact area between the connecting section 21 and the inner peripheral wall of the opening 11, thereby increasing the welded connection area and thus strengthening the connection between the piping 2 and the valve island 1, further reducing the risk of leakage.

[0071] In some embodiments of this utility model, such as Figures 1-3As shown, the inner peripheral wall of the opening 11 has a mounting groove 111, which extends to the outer wall of the valve island 1. The mounting groove 111 extends along the circumferential direction of the opening 11. The connecting section 21 is located in the mounting groove 111 and is welded to the wall of the mounting groove 111 away from the center line of the opening 11.

[0072] Therefore, during assembly, the mounting groove 111 provides a circumferential limit for the connecting section 21 along the opening 11, thereby reducing assembly difficulty and deviation. This facilitates welding of the connecting section 21 to the wall surface of the mounting groove 111 away from the center line of the opening 11, improving welding efficiency. Simultaneously, since the mounting groove 111 extends circumferentially along the opening 11, the contact area between the mounting groove 111 and the connecting section 21 is increased, further increasing the welding area between the connecting section 21 and the wall surface of the mounting groove 111 away from the center line of the opening 11, further enhancing connection strength. Furthermore, the mounting groove 111 helps disperse stress, reducing local stress concentration and improving durability. Additionally, welding the mounting groove 111 to the wall surface away from the center line of the opening 11 effectively prevents solder from penetrating into the flow channel 12 of the valve island 1, improving the reliability of the valve assembly 100.

[0073] In some embodiments of this utility model, such as Figures 1-3 As shown, the end of the connecting section 21 facing away from the main body section 22 abuts against the wall of the mounting groove 111 facing outward from the opening 11. This arrangement further prevents solder from penetrating into the flow channel 12 of the valve island 1 during the welding connection between the connecting section 21 and the wall of the mounting groove 111 facing away from the center line of the opening 11, thus preventing solder contamination of the medium in the flow channel 12 and further improving the reliability of the valve assembly 100.

[0074] In some embodiments of this utility model, such as Figures 4-9 As shown, the end of the connecting section 21 opposite to the main body section 22 has a flange 211 extending in a direction opposite to the central axis of the connecting section 21, and the flange 211 is welded to the valve island 1. Thus, by welding the flange 211 to the valve island 1, the welding connection area between the two is effectively increased, thereby improving the connection strength between the piping 2 and the valve island 1 and further reducing the risk of leakage.

[0075] In some embodiments of this utility model, such as Figures 7-9 As shown, the flange 211 is welded to the inner wall of the flow channel 12. It can be understood that the connecting section 21 passes through the opening 11 and extends into the flow channel 12. By welding the flange 211 to the inner wall of the flow channel 12, a firm connection between the piping 2 and the valve island 1 is achieved. Furthermore, because the flange 211 is welded to the inner wall of the flow channel 12, the impact of external collisions on the welding can be reduced, ensuring the welding strength.

[0076] In some embodiments of this utility model, such as Figures 4-6As shown, the connecting section 21 is located outside the flow channel 12, and the flange 211 is welded to the outer wall of the flow channel 12. Thus, while achieving a secure connection between the piping 2 and the valve island 1 through welding the flange 211 to the outer wall of the flow channel 12, the welding solder, being located outside the flow channel 12, penetrates into the flow channel 12 of the valve island 1, preventing solder contamination of the medium within the flow channel 12 and further improving the reliability of the valve assembly 100.

[0077] In some embodiments of this utility model, such as Figure 1 , Figure 4 and Figure 7 As shown, the main body section 22 is made of stainless steel, and the main body section 22 and the connecting section 21 are integrated into one piece. Therefore, by integrating the main body section 22 and the connecting section 21 into one piece, the overall structural strength of the piping 2 can be effectively improved, ensuring smoother flow of the medium within the piping 2, reducing flow resistance, and improving the heat exchange efficiency of the heat exchange device 1000 using this valve assembly 100.

[0078] In some embodiments of this utility model, such as Figure 1 , Figure 4 and Figure 7 As shown, the pipe diameter of the main body section 22 is the same as that of the connecting section 21. This arrangement further ensures the smooth flow of the medium within the piping 2, reduces flow resistance, and lowers the processing and manufacturing difficulty of the piping 2, effectively reducing the cost of the valve assembly 100.

[0079] In some embodiments of this utility model, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, the main body section 22 is made of copper, and the main body section 22 and the connecting section 21 are welded together. It is understandable that copper and aluminum components easily form brittle intermetallic compounds at high temperatures, leading to a significant reduction in the strength of the welded connection, and even cracking. Therefore, when the main body section 22 is made of copper, the connecting section 21, made of stainless steel, needs to be connected to both the copper main body section 22 and the aluminum valve island 1 to achieve an indirect connection between the copper main body section 22 and the aluminum valve island 1. This ensures the connection strength between the piping 2 and the valve island 1, further reducing the risk of leakage and improving the reliability of the valve assembly 100.

[0080] Furthermore, the main body section 22 and the valve island 1 are spaced apart. Therefore, when the main body section 22 and the connecting section 21 are welded together, or when the connecting section 21 and the valve island 1 are welded together, the spaced arrangement of the main body section 22 and the valve island 1 further ensures that the main body section 22 and the valve island 1 are not affected by the heat generated during welding, thus improving reliability.

[0081] Specifically, during the assembly of the valve assembly 100, the connecting section 21 is first welded to the valve island 1, and then the main body section 22 and the connecting section 21 are welded together.

[0082] In some embodiments of this utility model, such as Figure 2 , Figure 5 and Figure 8 As shown, the connecting section 21 is sleeved outside the main body section 22, and the inner wall surface of the connecting section 21 is welded to the outer wall surface of the main body section 22; or, as... Figure 3 , Figure 6 As shown in the figure, the main body segment 22 is fitted outside the connecting segment 21, and the inner wall surface of the main body segment 22 is welded to the outer wall surface of the connecting segment 21. Therefore, this arrangement can meet different needs and adapt to different installation scenarios. Furthermore, different connection methods can be selected based on the components connected to the end of the main body segment 22 away from the connecting segment 21, effectively improving versatility.

[0083] Meanwhile, by fitting the connecting segment 21 around the main body segment 22 and welding its inner wall surface to the outer wall surface of the main body segment 22, the welding area between the connecting segment 21 and the main body segment 22 can be effectively increased, thus enhancing their connection strength. Alternatively, by fitting the main body segment 22 around the connecting segment 21 and welding its inner wall surface to the outer wall surface of the connecting segment 21, the welding area between the connecting segment 21 and the main body segment 22 can be effectively increased, thus enhancing their connection strength.

[0084] In some embodiments of this utility model, such as Figure 2 , Figure 5 and Figure 8 As shown, when the connecting section 21 is fitted outside the main body section 22, the connecting section 21 includes a first section 212, a second section 213, and a first transition section 214. The first section 212 is welded to the valve island 1. The second section 213 and the first section 212 are arranged along the length of the connecting section 21. The second section 213 is fitted outside the main body section 22, and its diameter is larger than that of the first section 212. The first transition section 214 connects the first section 212 and the second section 213. The end of the main body section 22 closest to the valve island 1 abuts against the inner wall of the first transition section 214. The main body section 22 is welded to both the second section 213 and the first transition section 214.

[0085] Therefore, by welding the main body section 22 to the second section 213 and the first transition section 214 respectively, the welding connection between the main body section 22 and the connecting section 21 is realized. Furthermore, by having the end of the main body section 22 close to the valve island 1 abut against the inner wall of the first transition section 214, the welding solder of the welding connection is effectively prevented from penetrating into the flow channel 12 of the valve island 1, thereby avoiding the contamination of the medium in the flow channel 12 by the solder and further improving the reliability of the valve assembly 100.

[0086] In some embodiments of this utility model, such as Figure 3 , Figure 6 As shown in the figure, when the main body section 22 is fitted outside the connecting section 21, the main body section 22 includes a third section 221, a fourth section 222, and a second transition section 223. The fourth section 222 and the third section 221 are arranged along the length of the main body section 22. The fourth section 222 is fitted outside the connecting section 21, and the diameter of the fourth section 222 is larger than the diameter of the third section 221. The second transition section 223 connects the third section 221 and the fourth section 222. The end of the connecting section 21 facing away from the valve island 1 abuts against the inner wall of the second transition section 223. The connecting section 21 is welded to the fourth section 222 and the second transition section 223 respectively.

[0087] Therefore, by welding the connecting section 21 to the fourth section 222 and the second transition section 223 respectively, the main body section 22 and the connecting section 21 are welded together. Furthermore, by having the end of the connecting section 21 away from the valve island 1 abut against the inner wall of the second transition section 223, the solder of the welding connection is effectively prevented from penetrating into the flow channel 12 of the valve island 1, thereby avoiding solder contamination of the medium in the flow channel 12 and further improving the reliability of the valve assembly 100.

[0088] In some embodiments of this utility model, such as Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 8 and Figure 9 As shown, the melting point of the solder used to weld the main body section 22 and the connecting section 21 is lower than that of the solder used to weld the connecting section 21 and the valve island 1. Therefore, this arrangement effectively prevents melting at the weld joint between the connecting section 21 and the valve island 1 caused by the welding of the main body section 22 and the connecting section 21, further ensuring the reliability of the connection between the connecting section 21 and the valve island 1.

[0089] In some embodiments of this utility model, there are one or more pipes 2. It is understood that the valve island 1 can be connected to at least one of the compressor's discharge pipe, heat exchanger 200, electronic expansion valve 3, and four-way valve 4 via pipes 2, with the number of pipes 2 corresponding one-to-one with the compressor's discharge pipe, heat exchanger 200, electronic expansion valve 3, and four-way valve 4. For example, when the valve island 1 only needs to be connected to one of the compressor's discharge pipe, heat exchanger 200, electronic expansion valve 3, or four-way valve 4 via pipe 2, the number of pipes 2 is one; while when the valve island 1 needs to be connected to multiple of the compressor's discharge pipe, heat exchanger 200, electronic expansion valve 3, and four-way valve 4 via multiple corresponding pipes 2, the number of pipes 2 is multiple.

[0090] In some embodiments of this utility model, such as Figure 12 and Figure 13As shown, the valve assembly 100 also includes an electronic expansion valve 3. The end of the main body section 22 facing away from the connecting section 21 is connected to the electronic expansion valve 3. Thus, the electronic expansion valve 3 and the valve island 1 are connected via piping 2, achieving communication between the flow path of the electronic expansion valve 3 and the flow channel 12 of the valve island 1, while simultaneously integrating the electronic expansion valve 3 and the valve island 1 onto the valve assembly 100.

[0091] In some embodiments of this utility model, the electronic expansion valve 3 includes a stainless steel connecting pipe, and the main body section 22 is made of copper. The connecting pipe is welded to the main body section 22. Thus, the connection between the piping 2 and the connecting pipe is achieved through the connection of the stainless steel connecting pipe and the main body section 22, thereby enabling the flow path of the electronic expansion valve 3 to communicate with the flow channel 12 of the valve island 1. Simultaneously, the welded connection between the stainless steel connecting pipe and the copper main body section 22 ensures the strength of their connection.

[0092] In some embodiments of this utility model, the electronic expansion valve 3 includes a copper connecting pipe, and the main body section 22 is made of copper or stainless steel. The connecting pipe is welded to the main body section 22. Thus, the connection between the piping 2 and the connecting pipe is achieved through the connection of the copper connecting pipe and the main body section 22, thereby enabling the flow path of the electronic expansion valve 3 to communicate with the flow channel 12 of the valve island 1. Simultaneously, the welded connection between the copper connecting pipe and the copper main body section 22, or the welded connection between the copper connecting pipe and the stainless steel main body section 22, ensures the strength of the connection.

[0093] In some embodiments of this utility model, such as Figure 12 and Figure 13 As shown, the valve assembly 100 also includes a four-way valve 4. The end of the main body section 22 facing away from the connecting section 21 is connected to the four-way valve 4. Thus, the four-way valve 4 and the valve island 1 are connected via piping 2, achieving communication between the flow path of the four-way valve 4 and the flow channel 12 of the valve island 1, while simultaneously integrating the four-way valve 4 and the valve island 1 onto the valve assembly 100.

[0094] In some embodiments of this utility model, the four-way valve 4 includes a stainless steel connector pipe and a copper main body section 22, which are welded together. Thus, the connection between the stainless steel connector pipe and the main body section 22 enables the connection between the piping 2 and the connector pipe, thereby connecting the flow path of the four-way valve 4 with the flow channel 12 of the valve island 1. Simultaneously, the welded connection between the stainless steel connector pipe and the copper main body section 22 ensures the strength of their connection.

[0095] In some embodiments of this utility model, the four-way valve 4 includes a copper connector pipe, and the main body section 22 is made of copper or stainless steel. The connector pipe is welded to the main body section 22. Thus, the connection between the copper connector pipe and the main body section 22 is achieved, thereby connecting the piping 2 and the connector pipe, and consequently, enabling the flow path of the four-way valve 4 to communicate with the flow channel 12 of the valve island 1. Simultaneously, the copper connector pipe and the copper main body section 22 are welded together, or the copper connector pipe and the stainless steel main body section 22 are welded together, ensuring the strength of the connection.

[0096] In some embodiments of this utility model, such as Figure 12 and Figure 13 As shown, the valve assembly 100 also includes two electronic expansion valves 3 and a four-way valve 4. There are three pipes 2. The main body section 22 of the first pipe 2 is connected to one of the electronic expansion valves 3 at one end away from the connecting section 21. The main body section 22 of the second pipe 2 is connected to another electronic expansion valve 3 at one end away from the connecting section 21. The main body section 22 of the third pipe 2 is connected to the four-way valve 4 at one end away from the connecting section 21, so that the medium can flow between the valve island 1, the two electronic expansion valves 3 and the four-way valve 4.

[0097] In some embodiments, such as Figure 12 and Figure 13 As shown, the valve assembly 100 also includes a gas-liquid separator 300, further integrating the valve assembly 100.

[0098] In some embodiments of this invention, a throttling valve chamber is formed within the flow channel 12. The valve assembly 100 also includes an electronic expansion valve, which comprises a coil and a valve core. The valve core is disposed within the throttling valve chamber, and the coil is disposed outside the valve island 1 and fixed to the valve island 1. Thus, the valve core located within the throttling valve chamber can be moved by the coil to control the opening of the throttling valve chamber, thereby controlling the flow rate within the flow channel 12. Simultaneously, by disposing the coil outside the valve island 1 and fixing it to the valve island 1, installation and maintenance of the coil are facilitated, and the service life of the coil is improved.

[0099] In some embodiments of this utility model, the valve island 1 includes a body portion and a connector portion disposed on the body portion, a flow channel 12 is formed in the body portion and the connector portion, at least one opening 11 is formed on the connector portion and communicates with the flow channel 12, and a connecting section 21 is welded to the connector portion.

[0100] Therefore, the joint can extend the opening 11, thereby guiding and positioning the connecting section 21, making it easier to assemble the connecting section 21 into the opening 11. In addition, during the assembly process and normal use, it reduces the probability of radial shaking and displacement of the connecting section 21, improves the reliability and stability of the fit between the connecting section 21 and the valve island 1, and improves the structural strength of the welded connection between the two.

[0101] In some embodiments of this utility model, the connector protrudes from the body and is formed as an annular boss. The end face of the connector is recessed downward to form a groove. The connecting segment 21 is inserted into the groove and abuts against the bottom of the groove. The sidewall of the groove and the outer wall of the connecting segment 21 are welded together with solder. Therefore, by inserting the connecting segment 21 into the groove and abutting against the bottom of the groove, the probability of radial wobbling and displacement of the connecting segment 21 is further reduced, and the welding area between the sidewall of the groove and the outer wall of the connecting segment 21 is increased, further improving the connection strength and reliability.

[0102] In some embodiments of this utility model, the connector protrudes from the body and is formed into a tubular shape, and the connecting section 21 is welded to the outer or inner surface of the connector. This arrangement allows the connector to further extend the opening 11, thereby guiding and positioning the connecting section 21, reducing assembly and welding difficulties, and improving assembly efficiency.

[0103] The following is for reference. Figure 1 The valve assembly 100 of the first embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel. The main body section 22 is made of stainless steel. The main body section 22 and the connecting section 21 are integral parts. The inner peripheral wall of the opening 11 has a mounting groove 111. The mounting groove 111 extends to the outer wall surface of the valve island 1 and extends along the circumferential direction of the opening 11. The connecting section 21 is located in the mounting groove 111 and is welded to the wall surface of the mounting groove 111 away from the center line of the opening 11.

[0104] The following is for reference. Figure 2The valve assembly 100 of the second embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel and the main body section 22 is made of copper. The inner peripheral wall of the opening 11 has a mounting groove 111. The mounting groove 111 extends to the outer wall surface of the valve island 1 and extends along the circumferential direction of the opening 11. The connecting section 21 includes a first section 212, a second section 213 and a first transition section 214. The first segment 212 is located inside the mounting groove 111 and is welded to the wall of the mounting groove 111 away from the center line of the outlet 11. The second segment 213 and the first segment 212 are arranged along the length of the connecting segment 21. The second segment 213 is sleeved outside the main body segment 22. The diameter of the second segment 213 is larger than the diameter of the first segment 212. The first transition segment 214 is connected between the first segment 212 and the second segment 213. The end of the main body segment 22 near the valve island 1 abuts against the inner wall of the first transition segment 214. The main body segment 22 is welded to the second segment 213 and the first transition segment 214 respectively.

[0105] The following is for reference. Figure 3 The valve assembly 100 of the third embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel and the main body section 22 is made of copper. The inner peripheral wall of the opening 11 has a mounting groove 111. The mounting groove 111 extends to the outer wall surface of the valve island 1 and extends along the circumferential direction of the opening 11. The connecting section 21 is located in the mounting groove 111 and is welded to the wall surface of the mounting groove 111 away from the center line of the opening 11. The main body section 22 includes a third section 221, a fourth section 222 and a second transition section 223. The fourth segment 222 and the third segment 221 are arranged along the length of the main segment 22. The fourth segment 222 is fitted outside the connecting segment 21. The diameter of the fourth segment 222 is larger than that of the third segment 221. The second transition segment 223 is connected between the third segment 221 and the fourth segment 222. The end of the connecting segment 21 facing away from the valve island 1 abuts against the inner wall of the second transition segment 223. The connecting segment 21 is welded to the fourth segment 222 and the second transition segment 223 respectively.

[0106] The following is for reference. Figure 4The valve assembly 100 of the fourth embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel. The main body section 22 is made of stainless steel. The main body section 22 and the connecting section 21 are integral parts. The end of the connecting section 21 away from the main body section 22 has a flange 211 extending in a direction away from the central axis of the connecting section 21. The connecting section 21 is located outside the flow channel 12. The flange 211 is welded to the outer wall surface of the flow channel 12.

[0107] The following is for reference. Figure 5 The valve assembly 100 of the fifth embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel and the main body section 22 is made of copper. The connecting section 21 includes a first section 212, a second section 213 and a first transition section 214. The first segment 212 has a flange 211 extending toward the direction away from the central axis of the connecting segment 21 at one end away from the main segment 22. The connecting segment 21 is located outside the flow channel 12, and the flange 211 is welded to the outer wall of the flow channel 12. The second segment 213 and the first segment 212 are arranged along the length of the connecting segment 21. The second segment 213 is fitted outside the main segment 22, and the diameter of the second segment 213 is larger than the diameter of the first segment 212. The first transition segment 214 is connected between the first segment 212 and the second segment 213. The end of the main segment 22 near the valve island 1 abuts against the inner wall of the first transition segment 214. The main segment 22 is welded to the second segment 213 and the first transition segment 214 respectively.

[0108] The following is for reference. Figure 6 The valve assembly 100 of the sixth embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel and the main body section 22 is made of copper. The end of the connecting section 21 away from the main body section 22 has a flange 211 extending in a direction away from the central axis of the connecting section 21. The connecting section 21 is located outside the flow channel 12. The flange 211 is welded to the outer wall of the flow channel 12. The main body section 22 includes a third section 221, a fourth section 222 and a second transition section 223. The fourth segment 222 and the third segment 221 are arranged along the length of the main segment 22. The fourth segment 222 is fitted outside the connecting segment 21. The diameter of the fourth segment 222 is larger than that of the third segment 221. The second transition segment 223 is connected between the third segment 221 and the fourth segment 222. The end of the connecting segment 21 facing away from the valve island 1 abuts against the inner wall of the second transition segment 223. The connecting segment 21 is welded to the fourth segment 222 and the second transition segment 223 respectively.

[0109] The following is for reference. Figure 7 The valve assembly 100 of the seventh embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel. The main body section 22 is made of stainless steel. The main body section 22 and the connecting section 21 are integral parts. The end of the connecting section 21 away from the main body section 22 has a flange 211 extending in a direction away from the central axis of the connecting section 21. The flange 211 is welded to the inner wall surface of the flow channel 12.

[0110] The following is for reference. Figure 8 The valve assembly 100 of the eighth embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel and the main body section 22 is made of copper. The connecting section 21 includes a first section 212, a second section 213 and a first transition section 214. The first segment 212 has a flange 211 extending toward the direction away from the central axis of the connecting segment 21 at one end away from the main segment 22. The flange 211 is welded to the inner wall of the flow channel 12. The second segment 213 and the first segment 212 are arranged along the length of the connecting segment 21. The second segment 213 is fitted outside the main segment 22. The diameter of the second segment 213 is larger than the diameter of the first segment 212. The first transition segment 214 is connected between the first segment 212 and the second segment 213. The end of the main segment 22 near the valve island 1 abuts against the inner wall of the first transition segment 214. The main segment 22 is welded to the second segment 213 and the first transition segment 214 respectively.

[0111] It should be noted that in the valve assembly 100 of the eighth embodiment, the valve island 1 includes a first shell and a second shell. The first shell and the second shell form a flow path and are detachably connected. The first section 212, the second section 213 and the first transition section 214 have the same pipe diameter before assembly. The first section 212 has a flange 211 extending toward the direction away from the central axis of the connecting section 21 at one end away from the main body section 22. During the assembly process, the first section 212 is first inserted into the opening 11 so that the flange 211 is welded to the inner wall of the flow channel 12. Then, the pipe diameters of the first transition section 214 and the second section 213 are enlarged. Finally, the main body section 22 is placed in the second section 213 so that the end of the main body section 22 near the valve island 1 abuts against the inner wall of the first transition section 214. The main body section 22 is then welded to the second section 213 and the first transition section 214 respectively.

[0112] The following is for reference. Figure 9The valve assembly 100 of the ninth embodiment of the present invention is described in detail. The valve assembly 100 includes a valve island 1 and a pipe 2. The valve island 1 is made of aluminum and has an opening 11 and a flow channel 12 communicating with the opening 11. The pipe 2 includes a main body section 22 and a connecting section 21. The connecting section 21 is made of stainless steel and the main body section 22 is made of copper. The end of the connecting section 21 away from the main body section 22 has a flange 211 extending in a direction away from the central axis of the connecting section 21. The flange 211 is welded to the inner wall of the flow channel 12. The main body section 22 includes a third section 221, a fourth section 222 and a second transition section 223. The fourth segment 222 and the third segment 221 are arranged along the length of the main segment 22. The fourth segment 222 is fitted outside the connecting segment 21. The diameter of the fourth segment 222 is larger than that of the third segment 221. The second transition segment 223 is connected between the third segment 221 and the fourth segment 222. The end of the connecting segment 21 facing away from the valve island 1 abuts against the inner wall of the second transition segment 223. The connecting segment 21 is welded to the fourth segment 222 and the second transition segment 223 respectively.

[0113] It should be noted that in the valve assembly 100 of the ninth embodiment, the valve island 1 includes a first shell and a second shell. The first shell and the second shell form a flow path and are detachably connected. The connecting section 21 passes through the opening 11 so that the flange 211 is welded to the inner wall of the flow channel 12. Then, the fourth section 222 of the main body section 22 is sleeved on the connecting section 21 so that the end of the connecting section 21 away from the valve island 1 abuts against the inner wall of the second transition section 223. Finally, the connecting section 21 is welded to the fourth section 222 and the second transition section 223 respectively.

[0114] The heat exchange device 1000 of this utility model embodiment is described below.

[0115] According to the embodiment of the present utility model, the heat exchange device 1000, such as Figures 10-13 As shown, it includes a heat exchanger 200 and a valve assembly 100, with the valve assembly 100 integrated into the heat exchanger 200 to achieve miniaturization.

[0116] Specifically, the end of the main body section 22 facing away from the connecting section 21 is connected to the heat exchanger 200. Thus, this arrangement allows the heat exchange flow path of the heat exchanger 200 to be connected to the flow channel 12 of the valve island 1 through the piping 2, so that the medium can flow between the heat exchange flow path and the piping 2.

[0117] At the same time, such as Figures 1-9As shown, the connecting section 21 is welded to the opening 11 to firmly connect the piping 2 and the valve island 1. Compared with other connection methods, the welded connection has higher strength and sealing performance, effectively reducing the risk of leakage. Furthermore, the welded connection provides a smoother flow path, reducing flow resistance and improving the heat exchange efficiency of the heat exchange device 1000 using this valve assembly 100. Simultaneously, the welded connection reduces the number of connecting parts, simplifies the structure of the heat exchange device 1000, and further contributes to the miniaturization design of the valve assembly 100. In addition, in vibration environments, the welded connection is more reliable, less prone to loosening, and effectively reduces vibration noise.

[0118] Furthermore, since the potential difference between stainless steel and aluminum parts is smaller, the risk of corrosion is low and no additional protection is required. Stainless steel has high strength and resistance to deformation, making it suitable for high-stress scenarios. Therefore, by welding the connecting section 21 of the stainless steel parts to the valve island 1 of the aluminum parts, the connection between the piping 2 and the valve island 1 is further ensured to be firmly connected together.

[0119] When the valve assembly 100 is applied to an air conditioner, there are multiple pipes 2. One of the main body sections 22 of one pipe 2 is connected to the heat exchanger 200 at one end away from the connecting section 21, and the other pipe 2 is connected to the compressor's discharge pipe at one end away from the connecting section 21. When the air conditioner is cooling, the refrigerant is transported from the compressor's discharge pipe to the flow channel 12 of the valve island 1 through the corresponding pipe 2. The refrigerant is then transported from the flow channel 12 of the valve island 1 to the heat exchange flow path of the heat exchanger 200 through the corresponding pipe 2.

[0120] Meanwhile, the connecting section 21 is welded to the opening 11 to ensure that the piping 2 and the valve island 1 are firmly connected together, thereby ensuring the reliability of the connection and avoiding vibration, noise or air leakage caused by loosening at the connection between the connecting section 21 and the valve island 1, thus improving the overall reliability.

[0121] Optionally, the heat exchanger 200 is a plate heat exchanger 200. Specifically, the heat exchanger 200 includes a heat exchange unit, a first end plate, and a second end plate. The first end plate and the second end plate are arranged at intervals in the thickness direction. The heat exchange unit is fixed between the first end plate and the second end plate. The heat exchanger 200 has a first channel and a second channel that are spaced apart from each other. When the refrigerant flows in the first channel and the second channel, it exchanges heat with the inner walls of the first channel and the second channel, thereby realizing the heat exchange between the refrigerant in the first channel and the refrigerant in the second channel.

[0122] According to an embodiment of the present invention, the heat exchange device 1000 includes a valve assembly 100. A valve island 1, made of aluminum, has an opening 11 and a flow channel 12 communicating with the opening 11. The piping 2 includes a main body section 22 and a connecting section 21. The end of the main body section 22 facing away from the connecting section 21 is connected to the heat exchanger 200. The connecting section 21, made of stainless steel, is welded to the opening 11, thus firmly connecting the piping 2 and the valve island 1 together. Compared to other connection methods, welded connections offer higher strength and sealing performance, effectively reducing the risk of leakage. Furthermore, in vibration environments, welded connections are more reliable and less prone to loosening, effectively reducing vibration noise. Simultaneously, welded connections reduce the number of connecting components, simplifying the structure of the heat exchange device 1000 and further contributing to its miniaturization design.

[0123] The following describes an air conditioner according to an embodiment of the present invention.

[0124] The air conditioner according to the embodiments of this utility model, such as Figures 10-13 As shown, it includes a heat exchange device 1000, at least one interface of which is connected to a compressor. This allows refrigerant from the compressor to flow into the heat exchange device 1000.

[0125] Specifically, there are multiple pipes 2. The heat exchanger 200 is connected to one end of the main body section 22 of one of the pipes 2, away from the connecting section 21. The compressor's discharge pipe is also connected to one end of the main body section 22 of one of the pipes 2, away from the connecting section 21. Thus, the valve island 1 connects the compressor's discharge pipe to the heat exchanger 200's heat exchange path, allowing the refrigerant to flow within the compressor's discharge pipe and the heat exchanger 200's heat exchange path.

[0126] For example, when the air conditioner is cooling, the refrigerant is transported from the compressor's discharge pipe to the flow channel 12 of the valve island 1 through the corresponding piping 2, and then from the flow channel 12 of the valve island 1 to the heat exchange flow path of the heat exchanger 200 through the corresponding piping 2.

[0127] At the same time, such as Figures 1-9 As shown, the connecting section 21 is welded to the opening 11 to ensure that the piping 2 and the valve island 1 are firmly connected together, thereby ensuring the reliability of the connection and avoiding vibration, noise or air leakage caused by loosening at the connection between the connecting section 21 and the valve island 1, thus improving the overall reliability.

[0128] According to an embodiment of this utility model, the air conditioner includes a heat exchange device 1000. A valve island 1, made of aluminum, has an opening 11 and a flow channel 12 communicating with the opening 11. The piping 2 includes a main body section 22 and a connecting section 21. The end of the main body section 22 facing away from the connecting section 21 is connected to the heat exchanger 200. The connecting section 21, made of stainless steel, is welded to the opening 11, thus firmly connecting the piping 2 and the valve island 1 together. Compared to other connection methods, welded connections offer higher strength and sealing performance, effectively reducing the risk of leakage. Furthermore, in vibration environments, welded connections are more reliable and less prone to loosening, effectively reducing vibration noise. Simultaneously, welded connections reduce the number of connecting parts, simplifying the air conditioner structure and further contributing to the miniaturization of the air conditioner design.

[0129] The following describes an air conditioner according to an embodiment of the present invention.

[0130] The air conditioner according to this embodiment includes a compressor and a valve assembly 100, with one end of the main body section 22 facing away from the connecting section 21 connected to the connecting pipe of the air conditioner. Thus, the medium can flow through the connecting pipe of the air conditioner into the flow channel 12 of the valve island 1.

[0131] Specifically, the connecting pipes of the air conditioner can include the compressor's exhaust pipe, the compressor's suction pipe, or the connecting pipe of the electronic expansion valve. For example, there is a flow between the compressor's exhaust pipe and the flow channel 12 of the valve island 1, thereby delivering the heat to other components of the heat exchange device 1000 via the valve island 1.

[0132] like Figures 1-9 As shown, the connecting section 21 is welded to the opening 11 to ensure that the piping 2 and the valve island 1 are firmly connected together, thereby ensuring the reliability of the connection and avoiding vibration, noise or air leakage caused by loosening at the connection between the connecting section 21 and the valve island 1, thus improving the overall reliability.

[0133] Meanwhile, the connecting section 21 is welded to the opening 11 to firmly connect the piping 2 and the valve island 1. Compared with other connection methods, the welded connection has higher strength and sealing performance, effectively reducing the risk of leakage. Furthermore, the welded connection provides a smoother flow path, reducing flow resistance and improving the heat exchange efficiency of the heat exchange device 1000 using this valve assembly 100. Additionally, the welded connection reduces the number of connecting parts, simplifying the structure of the heat exchange device 1000 and further contributing to the miniaturization design of the valve assembly 100. Moreover, in vibration environments, the welded connection is more reliable, less prone to loosening, and effectively reduces vibration noise.

[0134] Furthermore, since the potential difference between stainless steel and aluminum parts is smaller, the risk of corrosion is low and no additional protection is required. Stainless steel has high strength and resistance to deformation, making it suitable for high-stress scenarios. Therefore, by welding the connecting section 21 of the stainless steel parts to the valve island 1 of the aluminum parts, the connection between the piping 2 and the valve island 1 is further ensured to be firmly connected together.

[0135] According to an embodiment of this utility model, an air conditioner includes a valve assembly 100. The main body section 22, at one end away from the connecting section 21, is connected to the air conditioner's connecting pipe. A valve island 1, made of aluminum, has an opening 11 and a flow channel 12 communicating with the opening 11. The piping 2 includes a main body section 22 and a connecting section 21. The end of the main body section 22 away from the connecting section 21 is connected to a heat exchanger 200. The connecting section 21, made of stainless steel, is welded to the opening 11, thus firmly connecting the piping 2 and the valve island 1 together. Compared to other connection methods, welded connections offer higher strength and sealing, effectively reducing the risk of leakage. Furthermore, in environments with compressor vibration, welded connections are more reliable, less prone to loosening, and effectively reduce vibration noise. Simultaneously, welded connections reduce the number of connecting parts, simplifying the air conditioner's structure and further contributing to the miniaturization of the air conditioner.

[0136] Other components of the air conditioner according to the embodiments of the present invention, such as the compressor and heat exchanger 200, as well as their operation, are known to those skilled in the art and will not be described in detail here.

[0137] 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.

[0138] 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 island, which is made of aluminum and has an opening and a flow channel communicating with the opening; The piping includes a connecting section and a main body section. The connecting section is made of stainless steel and is welded to the opening.

2. The valve assembly according to claim 1, characterized in that, The connecting section extends into the opening and is welded to the inner peripheral wall of the opening.

3. The valve assembly according to claim 2, characterized in that, The inner peripheral wall of the opening has a mounting groove that extends to the outer wall of the valve island. The mounting groove extends along the circumferential direction of the opening. The connecting section is located in the mounting groove and is welded to the wall of the mounting groove opposite to the center line of the opening.

4. The valve assembly according to claim 3, characterized in that, The end of the connecting section away from the main body section abuts against the wall surface of the mounting groove facing outward from the opening.

5. The valve assembly according to claim 1, characterized in that, The connecting section has a flange extending in a direction away from the central axis of the connecting section at one end opposite to the main body section, and the flange is welded to the valve island.

6. The valve assembly according to claim 5, characterized in that, The connecting section passes through the opening, and the flange is welded to the inner wall of the flow channel.

7. The valve assembly according to claim 5, characterized in that, The connecting section is located outside the flow channel, and the flange is welded to the outer wall of the flow channel.

8. The valve assembly according to claim 1, characterized in that, The main body section is made of stainless steel, and the main body section and the connecting section are an integral piece.

9. The valve assembly according to claim 8, characterized in that, The diameter of the main body section is the same as the diameter of the connecting section.

10. The valve assembly according to claim 1, characterized in that, The main body section is made of copper, and the main body section and the connecting section are welded together.

11. The valve assembly according to claim 10, characterized in that, The connecting segment is sleeved outside the main body segment, and the inner wall surface of the connecting segment is welded to the outer wall surface of the main body segment; or, the main body segment is sleeved outside the connecting segment, and the inner wall surface of the main body segment is welded to the outer wall surface of the connecting segment.

12. The valve assembly according to claim 11, characterized in that, When the connecting segment is fitted outside the main body segment, the connecting segment includes: The first segment is welded to the valve island; The second segment and the first segment are arranged along the length of the connecting segment. The second segment is fitted outside the main segment, and the diameter of the second segment is larger than that of the first segment. A first transition section is connected between the first section and the second section. The end of the main body section near the valve island abuts against the inner wall of the first transition section. The main body section is welded to the second section and the first transition section respectively.

13. The valve assembly according to claim 11, characterized in that, When the main body segment is fitted outside the connecting segment, the main body segment includes: Third paragraph; The fourth segment and the third segment are arranged along the length of the main body segment. The fourth segment is fitted outside the connecting segment, and the diameter of the fourth segment is larger than that of the third segment. The second transition section is connected between the third section and the fourth section. The end of the connecting section away from the valve island abuts against the inner wall of the second transition section. The connecting section is welded to the fourth section and the second transition section respectively.

14. The valve assembly according to claim 10, characterized in that, The melting point of the solder used to weld the main body section and the connecting section is lower than the melting point of the solder used to weld the connecting section and the valve island.

15. The valve assembly according to claim 1, characterized in that, The piping may be one or more.

16. The valve assembly according to claim 15, characterized in that, Also includes: An electronic expansion valve, wherein the end of the main body section opposite to the connecting section is connected to the electronic expansion valve.

17. The valve assembly according to claim 16, characterized in that, The electronic expansion valve includes a stainless steel connecting pipe, the main body section is a copper component, and the connecting pipe is welded to the main body section with solder. And / or, the electronic expansion valve includes a copper connecting pipe, the main body section is a copper or stainless steel component, and the connecting pipe is soldered to the main body section.

18. The valve assembly according to claim 15, characterized in that, Also includes: A four-way valve, wherein the end of the main body section opposite to the connecting section is connected to the four-way valve.

19. The valve assembly according to claim 18, characterized in that, The four-way valve includes a stainless steel connector pipe, the main body section is a copper component, and the connector pipe is welded to the main body section with solder. And / or, the four-way valve includes a copper connector tube, the main body section is a copper or stainless steel component, and the connector tube is welded to the main body section.

20. The valve assembly according to claim 1, characterized in that, A throttling valve cavity is formed within the flow channel. The valve assembly also includes an electronic expansion valve, which includes a coil and a valve core. The valve core is disposed within the throttling valve cavity, and the coil is disposed outside the valve island and fixed to the valve island.

21. The valve assembly according to claim 1, characterized in that, The valve island includes a body and a connector portion disposed on the body. The flow channel is formed in the body and the connector portion. At least one opening is formed on the connector portion and communicates with the flow channel. The connecting section is welded to the connector portion.

22. The valve assembly according to claim 21, characterized in that, The connector protrudes from the body and is formed as an annular boss. The end face of the connector is recessed downward to form a groove. The connecting segment is inserted into the groove and abuts against the bottom of the groove. The side wall of the groove and the outer wall of the connecting segment are welded together with solder. Alternatively, the connector protrudes from the body and is formed into a tubular shape, and the connecting section is welded to the outer or inner surface of the connector.

23. A heat exchange device, characterized in that, include: Heat exchanger; The valve assembly according to any one of claims 1-22 is integrated into the heat exchanger.

24. An air conditioner, characterized in that, include: compressor; According to claim 23, at least one interface of the heat exchange device is connected to the compressor.

25. An air conditioner, characterized in that, include: compressor; The valve assembly according to any one of claims 1-22, wherein the end of the main body section opposite to the connecting section is connected to the connecting pipe of the air conditioner.

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