Heat exchange channel module and air conditioner

Abstract

The utility model discloses a heat exchange flow path module and air conditioner, heat exchange flow path module is used for communicating with heat exchange medium flow part component to flow heat exchange medium, and heat exchange flow path module includes: valve island, valve island has connecting portion, and the refrigerant passage that communicates with connecting portion is formed in valve island, connecting pipe has first connecting section, and first connecting section links with connecting portion to make connecting pipe communicate valve island and heat exchange medium flow part component, wherein, at least the melting point of connecting portion is lower than the melting point of first connecting section, and valve island is cast to shape, and valve island is connected with connecting pipe cast. According to the heat exchange flow path module of the utility model embodiment, by making valve island and connecting pipe cast connection, can make valve island wrap first connecting section of connecting pipe, and the connecting strength between valve island and connecting pipe is high, and it is not easy to produce gap between valve island and connecting pipe even to break down in the working process, is favorable to reduce the risk of heat exchange medium leakage, and the safety is good.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and more specifically, to a heat exchange flow path module and an air conditioner. Background Technology

[0002] In an air conditioner, there are connecting pipes and valve bodies between the valve island and the compressor to achieve connection and allow the heat exchange medium to flow. However, the compressor will vibrate during operation. The vibration is transmitted to the connection of the valve island, which makes the connection of the valve island prone to cracking, causing the heat exchange medium to leak and resulting in poor safety. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a heat exchange flow path module in which the connection between the connecting pipe and the valve island is less prone to rupture, the heat exchange medium is less likely to leak, and safety is good.

[0004] Another objective of this invention is to provide an air conditioner having the aforementioned heat exchange flow path module.

[0005] A heat exchange flow path module according to an embodiment of the present invention is used to communicate with a heat exchange medium flow component to circulate a heat exchange medium. The heat exchange flow path module includes: a valve island having a connecting portion and a refrigerant channel formed therein communicating with the connecting portion; a connecting pipe having a first connecting section connected to the connecting portion to connect the valve island and the heat exchange medium flow component, wherein at least the melting point of the connecting portion is lower than the melting point of the first connecting section, the valve island is cast, and the valve island is cast and connected to the connecting pipe.

[0006] According to the heat exchange flow path module of this utility model embodiment, by casting the valve island and the connecting pipe together, the valve island can wrap the first connecting section of the connecting pipe. The connection strength between the valve island and the connecting pipe is high, and gaps or even cracks are not easily generated between the valve island and the connecting pipe during operation, which helps to reduce the risk of heat exchange medium leakage and has good safety.

[0007] In addition, the heat exchange flow path module according to the above embodiments of this utility model may also have the following additional technical features:

[0008] According to some embodiments of this utility model, the melting point of the valve island is lower than the melting point of the connecting pipe.

[0009] According to some embodiments of the present invention, one of the first connecting segment and the connecting portion has a connecting protrusion on its surface, and the connecting protrusion is embedded in the other of the connecting portion and the first connecting segment.

[0010] According to some embodiments of the present invention, the connecting protrusions are multiple protrusions arranged at intervals around the axis of the connecting pipe.

[0011] According to some embodiments of the present invention, the cross-sectional shape of the connecting protrusion in the direction parallel to the axis of the connecting pipe is rectangular or trapezoidal.

[0012] According to some embodiments of the present invention, the heat exchange flow path module further includes piping, which connects the connecting pipe and the heat exchange medium flow component.

[0013] According to some embodiments of the present invention, the connecting pipe further includes a second connecting section and a first reducing section. The first reducing section connects the first connecting section and the second connecting section in the axial direction. The inner diameter of the second connecting section is larger than the inner diameter of the first connecting section. The inner diameter of the first reducing section increases in the direction close to the second connecting section. The piping extends into the connecting pipe and the first reducing section is connected to the end of the piping. The second connecting section and at least a portion of the first reducing section are connected to the outer wall surface of the piping.

[0014] According to some embodiments of the present invention, the piping includes a small-diameter section, a second variable-diameter section and a large-diameter section connected sequentially along the axial direction. The small-diameter section is connected to the connecting pipe, and the large-diameter section is connected to the heat exchange medium flow component.

[0015] According to some embodiments of the present invention, the piping includes a small-diameter section, a second variable-diameter section, and a large-diameter section connected sequentially along the axial direction. The large-diameter section is connected to the heat exchange medium flow component. The piping extends into the connecting pipe, and the second variable-diameter section is connected to the end of the connecting pipe. The small-diameter section and at least a portion of the second variable-diameter section are connected to the inner wall surface of the connecting pipe.

[0016] According to some embodiments of the present invention, the outer wall surface of the piping is provided with a limiting protrusion, the piping extends into the connecting pipe and the limiting protrusion is connected to the end face of the connecting pipe, and the portion of the piping located inside the connecting pipe and the outer wall surface of part of the limiting protrusion are connected to the connecting pipe.

[0017] According to some embodiments of this utility model, the valve island is made of aluminum-based material; and / or, the piping is made of copper-based material; and / or, the piping is made of brass or copper; and / or, the connecting pipe is made of copper-aluminum transition material; and / or, the connecting pipe is made of stainless steel.

[0018] According to some embodiments of this utility model, the connecting pipe is a stainless steel pipe, and the connecting pipe is any one of the following: the compressor's exhaust pipe, return pipe, make-up pipe, the connector pipe of the four-way valve, the connector pipe of the electronic expansion valve, and the connecting pipe of the heat exchanger.

[0019] The air conditioner according to an embodiment of the present invention includes a heat exchange medium circulation component and a heat exchange flow path module according to an embodiment of the present invention.

[0020] 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

[0021] 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:

[0022] Figure 1 This is a structural schematic diagram of an air conditioner according to some embodiments of the present utility model;

[0023] Figure 2 This is a partial structural cross-sectional view of a heat exchange flow path module according to some embodiments of the present invention;

[0024] Figure 3 This is a partial structural cross-sectional view of a heat exchange flow path module according to some embodiments of the present utility model, wherein the first connecting section is provided with a connecting protrusion;

[0025] Figure 4 This is a schematic diagram of the structure of a connecting pipe according to some embodiments of the present utility model, wherein the first connecting section is provided with a connecting groove;

[0026] Figure 5 yes Figure 4 The center circle shows a magnified view of a portion of point A;

[0027] Figure 6 This is a partial structural cross-sectional view of a heat exchange flow path module according to some embodiments of the present utility model, wherein the connecting pipe includes a first connecting section, a second connecting section and a first variable diameter section;

[0028] Figure 7 This is a partial structural cross-sectional view of a heat exchange flow path module according to some embodiments of the present utility model, wherein the connecting pipe includes a first connecting section, a second connecting section and a first variable diameter section, and the piping includes a small diameter section, a second variable diameter section and a large diameter section;

[0029] Figure 8 This is a partial structural cross-sectional view of a heat exchange flow path module according to some embodiments of the present utility model, wherein the piping includes a small diameter section, a second variable diameter section and a large diameter section;

[0030] Figure 9 This is a partial structural cross-sectional view of a heat exchange flow path module according to some embodiments of the present utility model, wherein the outer wall surface of the piping is provided with a limiting protrusion.

[0031] Figure label:

[0032] Air conditioner 1000;

[0033] Heat exchange flow path module 100; heat exchange medium flow component 200;

[0034] Valve island 10; connecting part 11; connecting groove 111; refrigerant channel 12;

[0035] Connecting pipe 20; first connecting section 21; connecting protrusion 211; second connecting section 22; first reducing section 23;

[0036] Piping 30; Small diameter section 31; Second diameter reducing section 32; Large diameter section 33; Limiting protrusion 34; Solder 40. Detailed Implementation

[0037] 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.

[0038] 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", "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.

[0039] In the description of this utility model, "first feature" and "second feature" may include one or more of the features, "multiple" means two or more, "first feature above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them, and "first feature above", "above" and "over" the second feature may include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0040] The heat exchange flow path module 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0041] Reference Figures 1-9As shown, the heat exchange flow path module 100 according to an embodiment of the present invention is used to communicate with the heat exchange medium flow component 200 to flow the heat exchange medium, which can be a refrigerant or other media. The heat exchange flow path module 100 may include a valve island 10 and a connecting pipe 20. The valve island 10 has a refrigerant channel 12 communicating with the connecting pipe 20 for the flow of the heat exchange medium. The connecting pipe 20 connects the valve island 10 and the heat exchange medium flow component 200. The connection between the connecting pipe 20 and the heat exchange medium flow component 200 can be direct or indirect.

[0042] The heat exchange medium flow component 200 can refer to a valve body (e.g., an electronic expansion valve or a solenoid valve), a compressor, a heat exchanger, or other components used for the flow of the heat exchange medium. The heat exchange medium flow component 200 can be integrated with the valve island 10 or be a separate component from the valve island 10. For example, in some embodiments, such as... Figure 1 As shown, the air conditioner 1000 includes a heat exchange flow path module 100 and multiple heat exchange medium flow components 200. The multiple heat exchange medium flow components 200 include two electronic expansion valves and one four-way valve integrated with the valve island 10, facilitating miniaturization and centralization. The multiple heat exchange medium flow components 200 may also include other electronic expansion valves, other four-way valves, compressors, etc., not shown in the figure and separate from the valve island 10. The heat exchange flow path module 100 communicates with the heat exchange medium flow components 200 to allow heat exchange medium to flow within both the heat exchange flow path module 100 and the heat exchange medium flow components 200.

[0043] The connecting pipe 20 can be a stainless steel pipe. The connecting pipe 20 can be any one or more of the following: the exhaust pipe, return pipe, gas supply pipe of the compressor of the air conditioner 1000, the connector pipe of the four-way valve, the connector pipe of the electronic expansion valve, and the connecting pipe of the heat exchanger. That is, at least one of the following: the exhaust pipe, return pipe, gas supply pipe of the compressor of the air conditioner 1000, the connector pipe of the four-way valve, the connector pipe of the electronic expansion valve, and the connecting pipe of the heat exchanger is the connecting pipe 20 of this application, so that the connecting pipe 20 can be used to connect various heat exchange medium flow components 200 in the air conditioner 1000.

[0044] Specifically, the valve island 10 has a connecting portion 11, and a refrigerant passage communicating with the connecting portion 11 is formed within the valve island 10. The connecting pipe 20 has a first connecting section 21, which is connected to the connecting portion 11, so that the connecting pipe 20 communicates the valve island 10 and the heat exchange medium flow component 200. The connecting portion 11 may include a through hole, a boss, or other structures, such as in some embodiments, like Figure 2 As shown, the connecting part 11 is a through hole, which facilitates the first connecting section 21 to extend into the through hole and connect with the inner wall of the through hole. The contact area between the connecting part 11 and the first connecting section 21 is large, and the connecting pipe 20 is connected to the refrigerant channel 12 in the valve island 10.

[0045] In this embodiment, at least the melting point of the connecting portion 11 is lower than the melting point of the first connecting segment 21. That is, the melting point of at least the connecting portion 11 in the valve island 10 is lower than the melting point of at least the first connecting segment 21 in the connecting pipe 20. For example, the melting point of the connecting portion 11 in the valve island 10 is lower than the melting point of the first connecting segment 21 in the connecting pipe 20. Similarly, the melting point of the connecting portion 11 and other parts of the valve island 10 is lower than the melting point of the first connecting segment 21 and other parts of the connecting pipe 20. In some specific embodiments, the valve island 10 is made of aluminum alloy, and the connecting pipe 20 is made of stainless steel. The melting point of the aluminum alloy valve island 10 is lower than the melting point of the stainless steel connecting pipe 20.

[0046] Valve island 10 is cast, for example, using a casting method. Valve island 10 is cast to connecting pipe 20, that is, connecting part 11 is cast to the first connecting section 21. For example, valve island 10 and connecting pipe 20 are connected during the casting process of valve island 10, where valve island 10 encapsulates the already manufactured first connecting section 21 of connecting pipe 20. This casting connection makes valve island 10 and connecting pipe 20 a single, integral unit with high connection strength. Even if vibrations generated during compressor operation are transmitted to the connection between connecting pipe 20 and valve island 10, the high connection strength prevents gaps or even cracks from forming at the connection, thus reducing the risk of heat exchange medium leakage and ensuring good safety. No welding or other connection methods are required between valve island 10 and connecting pipe 20, simplifying operation and providing even higher connection strength.

[0047] Specifically, for example, the pre-formed connecting pipe 20 is placed in a mold and fixed, and then material is poured into the mold to prepare the valve island 10, so that the material wraps the first connecting section 21 of the pre-formed connecting pipe 20 during the preparation of the valve island 10, thereby obtaining the cast valve island 10 and the connecting pipe 20.

[0048] In some related technologies, the valve island and connecting pipe are connected by welding. However, the valve island is made of aluminum alloy, while the connecting pipe is made of stainless steel. The melting point of the valve island is lower than that of the connecting pipe, and the difference in melting points between the two is significant. During the welding process, the valve island may melt while the connecting pipe remains solid, easily leading to poor weld formation. For example, insufficient weld length may result in low weld strength. At high temperatures, iron-aluminum intermetallic compounds can easily form between the valve island and the connecting pipe, reducing the toughness and strength of the connection. This results in low shear strength and overall low connection strength at the connection. Therefore, welding the valve island and connecting pipe is difficult and results in low connection strength. When compressor vibration is transmitted to the connection, gaps or even cracks can easily form, causing heat exchange medium leakage and poor safety.

[0049] In this application, the valve island 10 is cast, and the valve island 10 and the connecting pipe 20 are cast together. The connection between the valve island 10 and the connecting pipe 20 is simple and easy to implement. The connection strength between the valve island 10 and the connecting pipe 20 is high. After the vibration of the compressor is transmitted to the connection between the valve island 10 and the connecting pipe 20, gaps or even cracks are not likely to form at the connection, the heat exchange medium is not easy to leak, and the safety is good.

[0050] According to the heat exchange flow path module 100 of this utility model embodiment, by casting the valve island 10 and the connecting pipe 20 together, the valve island 10 can wrap the first connecting section 21 of the connecting pipe 20. The connection strength between the valve island 10 and the connecting pipe 20 is high. During the operation, gaps or even cracks are not easily generated between the valve island 10 and the connecting pipe 20, which helps to reduce the risk of heat exchange medium leakage and has good safety.

[0051] In some embodiments of this utility model, the melting point of the valve island 10 is lower than that of the connecting pipe 20, so that the valve island 10 and the connecting pipe 20 can be made of the same material, making the valve island 10 and the connecting pipe 20 more robust and durable as a whole, with high practicality. The valve island 10 and the connecting pipe 20 are less likely to develop cracks that could lead to leakage of the heat exchange medium, thus ensuring good safety.

[0052] The connecting part 11 of the valve island 10 is cast to the first connecting section 21 of the connecting pipe 20. By designing the structure, shape, and size of the connecting part 11 and the first connecting section 21, the connection strength between the connecting part 11 and the first connecting section 21 can be increased. For example, in some embodiments of this utility model, such as... Figure 2 As shown, extending the dimension of the connecting part 11 connected to the first connecting section 21 in the vertical direction can increase the contact area between the connecting part 11 and the first connecting section 21, so as to achieve a more secure connection between the valve island 10 and the connecting pipe 20.

[0053] It should be noted that in this application, the descriptions of directions such as up, down, front, back, left, and right are based only on the directions marked in the attached drawings, and are not a limitation on the actual usage and installation directions of the valve island 10 and the connecting pipe 20.

[0054] In some embodiments, such as Figures 3-5 As shown, one of the first connecting segment 21 and the connecting portion 11 has a connecting protrusion 211 on its surface, and the connecting protrusion 211 is embedded in the other of the connecting portion 11 and the first connecting segment 21. For example, in some specific embodiments, such as Figure 3 As shown, the outer surface of the first connecting segment 21 is provided with a connecting protrusion 211, and the inner surface of the connecting portion 11 is provided with a connecting groove 111, with the connecting protrusion 211 embedded in the connecting groove 111. In some specific embodiments, such as... Figures 4-5As shown, the outer surface of the first connecting segment 21 is provided with a connecting groove 111, and the inner surface of the connecting part 11 is provided with a connecting protrusion 211, which is embedded in the connecting groove 111.

[0055] The connecting protrusion 211 increases the contact area between the first connecting segment 21 and the connecting part 11. The embedded design of the connecting protrusion 211 can improve the tensile, torsional and shear strength between the first connecting segment 21 and the connecting part 11, which is beneficial to improving the connection strength between the valve island 10 and the connecting pipe 20, reducing the risk of heat exchange medium leakage caused by rupture at the connection between the valve island 10 and the connecting pipe 20, and ensuring good safety.

[0056] Both the connecting protrusion 211 and the connecting groove 111 can be one or more. For example, in some embodiments, such as Figures 4-5 As shown, the connecting grooves 111 are multiple grooves spaced apart around the axis of the connecting pipe 20, which helps to increase the contact area between the valve island 10 and the connecting pipe 20, thereby improving the connection strength between the valve island 10 and the connecting pipe 20. The axis of the connecting pipe 20 can be along... Figures 3-5 As shown, the vertical direction extends, so that multiple connecting grooves 111 are arranged at intervals around the axis extending in the vertical direction.

[0057] By using multiple connecting protrusions 211, not only can the contact area between the first connecting segment 21 and the connecting part 11 be increased, but the force can also be distributed, stress concentration reduced, and the risk of deformation or even breakage of a single connecting protrusion 211 lowered, which is beneficial to improving the connection strength between the valve island 10 and the connecting pipe 20. Moreover, multiple connecting protrusions 211 are easy to manufacture and implement.

[0058] The connecting protrusion 211 can be along the axial direction of the connecting pipe 20 (e.g.) Figures 3-5 The connecting protrusion 211 can also extend around the axis of the connecting tube 20, that is, extend along the circumference of the connecting tube 20, so that the connecting protrusion 211 can be embedded in the other of the connecting part 11 and the first connecting segment 21.

[0059] In some embodiments, such as Figure 3 As shown, the cross-sectional shape of the connecting protrusion 211 in the direction parallel to the axis of the connecting pipe 20 is rectangular, which helps to improve the shear resistance at the connection between the first connecting section 21 and the connecting part 11, resulting in higher connection strength and easier processing. For example, the connecting protrusion 211 in... Figure 3 The cross-sectional shape on the vertical plane shown is rectangular.

[0060] For example, in some specific embodiments, such as Figures 4-5 As shown, the cross-sectional shape of the connecting groove 111 in the direction parallel to the axis of the connecting pipe 20 is rectangular. It can be seen that the cross-sectional shape of the connecting protrusion 211 that mates with the connecting groove 111 is also rectangular in the direction parallel to the axis of the connecting pipe 20.

[0061] In some embodiments, the connecting protrusion 211 has a trapezoidal cross-sectional shape in the direction parallel to the axis of the connecting pipe 20. The inclined sidewalls of the trapezoid can be used to distribute the load, which helps to reduce stress concentration at the connection between the first connecting segment 21 and the connecting portion 11, reduce the risk of cracking, improve the connection strength, and facilitate processing such as demolding. For example, the connecting protrusion 211 in Figure 3 The cross-sectional shape on the vertical plane shown is trapezoidal.

[0062] The connecting pipe 20 and the heat exchange medium flow component 200 can be directly or indirectly connected. For example, in some embodiments of this utility model, such as... Figure 1 , Figure 3 and Figures 6-9 As shown, the heat exchange flow path module 100 also includes piping 30, which connects the connecting pipe 20 and the heat exchange medium flow component 200, allowing the connecting pipe 20 to be indirectly connected to the heat exchange medium flow component 200 via piping 30, facilitating easy assembly and disassembly. For example... Figure 1 As shown, Figure 1 The dashed line indicates that multiple connecting pipes 20 and multiple piping 30 are connected in a one-to-one correspondence.

[0063] The connection between the piping 30 and the connecting pipe 20, and between the piping 30 and the heat exchange medium flow component 200, can be achieved by welding, riveting, bolting, or one or more other connection methods. The connection is strong, the heat exchange medium is not easily leaked, and the safety is good.

[0064] By designing the structure of the piping 30, such as its shape, length, and diameter, the spacing, relative position, and flow velocity of the heat exchange medium between the valve island 10 and the heat exchange medium flow component 200 can be adjusted, making the structural design of the heat exchange flow path module 100 more flexible and versatile. Simultaneously, it reduces the structural design requirements of the connecting pipe 20, resulting in higher structural strength of the connecting pipe 20, higher structural strength at the connection between the connecting pipe 20 and the valve island 10, a more secure connection between the connecting pipe 20 and the valve island 10, reduced leakage of the heat exchange medium, and improved safety.

[0065] In other embodiments, such as Figure 2 As shown, the heat exchange flow path module 100 does not include piping 30, allowing the connecting pipe 20 to be directly connected to the heat exchange medium flow component 200. This reduces the types and number of components included in the heat exchange flow path module 100, lowers costs, reduces the connection area between different components in the heat exchange flow path module 100, and makes the heat exchange flow path module 100 less prone to heat exchange medium leakage, thus ensuring good safety.

[0066] Of course, in some embodiments where the heat exchange flow path module 100 does not include the piping 30, the connecting pipe 20 can be directly connected to the flow path inside the heat exchange medium flow component 200, or it can be connected to the external pipe of the heat exchange medium flow component 200 to connect with the flow inside the heat exchange medium flow component 200, so that the heat exchange medium can flow between the heat exchange flow path module 100 and the heat exchange medium flow component 200.

[0067] In some embodiments, such as Figure 3 and Figure 6 As shown, the connecting pipe 20 also includes a second connecting section 22 and a first variable diameter section 23. The first variable diameter section 23 connects the first connecting section 21 and the second connecting section 22 in the axial direction of the connecting pipe 20. The inner diameter of the second connecting section 22 is larger than the inner diameter of the first connecting section 21, and the inner diameter of the first variable diameter section 23 increases in the direction close to the second connecting section 22.

[0068] Pipe 30 extends into connecting pipe 20, and the first reducing section 23 is connected to the end of pipe 30. The first reducing section 23 constrains the insertion depth of pipe 30 into connecting pipe 20, positioning the relative positions of pipe 30 and connecting pipe 20, thus making the connection between them more secure. For example, in some embodiments, such as... Figure 3 and Figure 6 As shown, the first reducing section 23 makes it less likely for the pipe 30 to fall downwards, and the connection strength between the pipe 30 and the connecting pipe 20 is higher.

[0069] The second connecting section 22 and at least part of the first reducing section 23 are both connected to the outer wall of the piping 30 (e.g., Figure 3 and Figure 6 The welding shown in the figure (solder 40) achieves a firm connection between the piping 30 and the connecting pipe 20. The insertion depth of the piping 30 into the connecting pipe 20 is adjusted by changing the inclination of the first reducing section 23, thereby adjusting the contact area between the first reducing section 23 and the outer wall of the piping 30. This allows for a greater connection between the piping 30 and the first reducing section 23 while constraining the insertion depth, maximizing the contact area between the piping 30 and the connecting pipe 20. This improves the connection strength between the piping 30 and the connecting pipe 20, making the heat exchange flow path module 100 less prone to rupture and heat exchange medium leakage, thus ensuring good safety.

[0070] In some embodiments, such as Figure 7As shown, the piping 30 includes a small-diameter section 31, a second variable-diameter section 32, and a large-diameter section 33 connected sequentially along the axial direction. The small-diameter section 31 is connected to the connecting pipe 20, and the large-diameter section 33 is connected to the heat exchange medium flow component 200. Not only can the piping 30 be positioned via the first variable-diameter section 23 of the connecting pipe 20, but the pipe diameters at both ends of the piping 30 can also be changed via the second variable-diameter section 32. This allows the piping 30 to be used to connect heat exchange medium flow components 200 and connecting pipes 20 with different pipe diameters, making the heat exchange flow path module 100 more versatile and its application range wider.

[0071] In some embodiments of this utility model, such as Figure 8 As shown, the piping 30 includes a small-diameter section 31, a second reducing section 32, and a large-diameter section 33 connected sequentially along the axial direction. The large-diameter section 33 is connected to the heat exchange medium flow component 200. The piping 30 extends into the connecting pipe 20, and the second reducing section 32 is connected to the end of the connecting pipe 20. The second reducing section 32 constrains the insertion depth of the piping 30 into the connecting pipe 20, positioning the relative positions of the piping 30 and the connecting pipe 20, thus making the connection between the piping 30 and the connecting pipe 20 more secure. For example, in some embodiments, such as... Figure 8 As shown, the second reducing section 32 makes it less likely for the pipe 30 to fall downwards, and the connection strength between the pipe 30 and the connecting pipe 20 is higher.

[0072] The smaller diameter section 31 and at least part of the second reducing section 32 are both connected to the inner wall surface of the connecting pipe 20 (e.g., Figure 8 The welding shown in the figure (solder 40) achieves a firm connection between the piping 30 and the connecting pipe 20. The insertion depth of the piping 30 into the connecting pipe 20 is adjusted by changing the inclination of the second reducing section 32, thereby adjusting the contact area between the second reducing section 32 and the inner wall of the connecting pipe 20. This allows for a greater connection between the connecting pipe 20 and the second reducing section 32 while constraining the insertion depth of the piping 30, maximizing the contact area between the piping 30 and the connecting pipe 20. This improves the connection strength between the piping 30 and the connecting pipe 20, making the heat exchange flow path module 100 less prone to rupture and leakage of the heat exchange medium, thus ensuring good safety.

[0073] In some embodiments, such as Figure 9 As shown, the outer wall of the piping 30 is provided with a limiting protrusion 34. The piping 30 extends into the connecting pipe 20, and the limiting protrusion 34 is connected to the end face of the connecting pipe 20. The limiting protrusion 34 constrains the insertion depth of the piping 30 into the connecting pipe 20, thereby positioning the relative positions of the piping 30 and the connecting pipe 20 and making the connection between the piping 30 and the connecting pipe 20 more secure. For example, in some embodiments, such as... Figure 9 As shown, the limiting protrusion 34 prevents the pipe 30 from falling downwards, and the connection strength between the pipe 30 and the connecting pipe 20 is higher.

[0074] The portion of the piping 30 located inside the connecting pipe 20 and the outer wall surface of the partial limiting protrusion 34 are connected to the connecting pipe 20 (e.g. Figure 9 The welding shown in the figure (solder 40) is used to achieve a firm connection between the piping 30 and the connecting pipe 20.

[0075] In some embodiments of this utility model, the valve island 10 is made of aluminum-based material, the piping 30 is made of copper-based material, and the connecting pipe 20 is made of copper-aluminum transition material. Aluminum-based material is a material with aluminum as its main matrix component, including pure aluminum, aluminum alloys, aluminum-based composite materials, and aluminum-based functional materials. Copper-based material is a material with copper as its main matrix component, including pure copper (red copper), copper alloys, copper-based composite materials, and copper-based functional materials. Copper-aluminum transition material is used to solve problems such as electrochemical corrosion that occur when copper and aluminum are directly connected; copper-aluminum transition material can be stainless steel, stainless iron, etc. For example, in some specific embodiments, the valve island 10 is made of aluminum alloy, the piping 30 is made of brass or red copper, and the connecting pipe 20 is made of stainless steel. That is, the piping 30 is a brass or red copper pipe, and the connecting pipe 20 is a stainless steel pipe.

[0076] The aluminum-based valve island 10 is directly welded to the copper-based piping 30. The high potential difference between the two materials can cause electrochemical corrosion, affecting the structural strength. This application addresses this by adding a copper-aluminum transition material connecting pipe 20 between the aluminum-based valve island 10 and the copper-based piping 30. This connecting pipe 20 connects the valve island 10 and the piping 30, thus preventing potential electrochemical corrosion.

[0077] Furthermore, the aluminum-based valve island 10 is cast and connected to the copper-aluminum transition material connecting pipe 20. Therefore, the heat exchange flow path module 100 of this application can firmly connect the aluminum-based valve island 10 and the copper-based piping 30 together. While solving the possible electrochemical corrosion, it ensures the connection strength of the valve island 10, connecting pipe 20 and piping 30, making the overall structural strength of the heat exchange flow path module 100 higher and less prone to gaps or even cracks. The heat exchange medium is less likely to leak, and the safety is better.

[0078] The air conditioner 1000 according to an embodiment of the present invention includes a heat exchange medium flow component 200 and a heat exchange flow path module 100 according to an embodiment of the present invention. The heat exchange medium flow component 200 can refer to a four-way valve, an electronic expansion valve, a compressor, etc. Since the heat exchange flow path module 100 according to an embodiment of the present invention has the aforementioned beneficial technical effects, the air conditioner 1000 according to an embodiment of the present invention, by casting the valve island 10 and the connecting pipe 20 together, can make the valve island 10 wrap around the first connecting section 21 of the connecting pipe 20. The connection strength between the valve island 10 and the connecting pipe 20 is high, and gaps or even cracks are less likely to occur between the valve island 10 and the connecting pipe 20 during operation, which helps to reduce the risk of heat exchange medium leakage and provides good safety.

[0079] Other configurations and operations of the heat exchange flow path module 100 and the air conditioner 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0080] 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.

[0081] In the description of this specification, the references to terms such as "embodiment," "specific embodiment," and "example" 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.

[0082] 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 heat exchange flow path module, characterized in that, For communication with heat exchange medium flow components to allow flow of heat exchange medium, including: A valve island, the valve island having a connecting portion, and a refrigerant passage communicating with the connecting portion is formed inside the valve island; A connecting pipe having a first connecting section connected to the connecting part, thereby enabling the connecting pipe to connect the valve island and the heat exchange medium flow component, wherein... At least the melting point of the connecting part is lower than the melting point of the first connecting section, the valve island is cast, and the valve island is cast and connected to the connecting pipe.

2. The heat exchange flow path module according to claim 1, characterized in that, The melting point of the valve island is lower than that of the connecting pipe.

3. The heat exchange flow path module according to claim 1, characterized in that, The surface of one of the first connecting segment and the connecting part is provided with a connecting protrusion, and the connecting protrusion is embedded in the other of the connecting part and the first connecting segment.

4. The heat exchange flow path module according to claim 3, characterized in that, The connecting protrusions are multiple protrusions arranged at intervals around the axis of the connecting pipe.

5. The heat exchange flow path module according to claim 3, characterized in that, The cross-sectional shape of the connecting protrusion in the direction parallel to the axis of the connecting pipe is rectangular or trapezoidal.

6. The heat exchange flow path module according to claim 1, characterized in that, It also includes piping that connects the connecting pipe and the heat exchange medium flow component.

7. The heat exchange flow path module according to claim 6, characterized in that, The connecting pipe further includes a second connecting section and a first reducing section. The first reducing section connects the first connecting section and the second connecting section axially. The inner diameter of the second connecting section is larger than the inner diameter of the first connecting section, and the inner diameter of the first reducing section increases in the direction closer to the second connecting section. The piping extends into the connecting pipe and the first reducing section is connected to the end of the piping. The second connecting section and at least a portion of the first reducing section are both connected to the outer wall surface of the piping.

8. The heat exchange flow path module according to claim 6 or 7, characterized in that, The piping includes a small-diameter section, a second variable-diameter section, and a large-diameter section connected sequentially along the axial direction. The small-diameter section is connected to the connecting pipe, and the large-diameter section is connected to the heat exchange medium flow component.

9. The heat exchange flow path module according to claim 6, characterized in that, The piping includes a small-diameter section, a second variable-diameter section, and a large-diameter section connected sequentially along the axial direction. The large-diameter section is connected to the heat exchange medium flow component. The piping extends into the connecting pipe, and the second variable-diameter section is connected to the end of the connecting pipe. The small-diameter section and at least a portion of the second variable-diameter section are connected to the inner wall surface of the connecting pipe.

10. The heat exchange flow path module according to claim 6, characterized in that, The outer wall of the piping is provided with a limiting protrusion. The piping extends into the connecting pipe and the limiting protrusion is connected to the end face of the connecting pipe. The portion of the piping located inside the connecting pipe and the outer wall of part of the limiting protrusion are connected to the connecting pipe.

11. The heat exchange flow path module according to any one of claims 6, 7, 9 and 10, characterized in that, The valve island is made of aluminum-based material; and / or, The piping material is copper-based; and / or, The piping is brass or copper; and / or, The connecting pipe is made of a copper-aluminum transition material; and / or, The connecting pipe is made of stainless steel.

12. The heat exchange flow path module according to any one of claims 1-7 and 9-10, characterized in that, The connecting pipe is a stainless steel pipe, and it can be any one of the following: the exhaust pipe of the air conditioner compressor, the return pipe, the make-up pipe, the connector pipe of the four-way valve, the connector pipe of the electronic expansion valve, or the connecting pipe of the heat exchanger.

13. An air conditioner, characterized in that, It includes heat exchange medium flow components and heat exchange flow path modules according to any one of claims 1-12.

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