Heat exchanger and heating and ventilation equipment

Abstract

The utility model provides a heat exchanger and heating and ventilation equipment, the heat exchanger comprises a plurality of heat exchange tube components, a connecting tube component and a connecting component, the plurality of heat exchange tube components are arranged side by side along a first direction, and each heat exchange tube component comprises a first heat exchange tube and a second heat exchange tube which are arranged side by side. The connecting pipe assembly comprises a plurality of connecting pipes arranged side by side in the first direction, and in one heat exchange pipe assembly, the same ends of the first heat exchange pipe and the second heat exchange pipe communicate through the connecting pipes. The connecting assembly is provided with at least two mounting parts which are arranged in parallel in the first direction, and the same ends of the at least two connecting pipes are connected with the at least two mounting parts correspondingly. According to the heat exchanger, the first heat exchange pipe and the second heat exchange pipe which are arranged side by side are communicated through the connecting pipe assembly, the multiple connecting pipes which are arranged side by side are fixed through the multiple installing parts of the connecting assembly, one-to-one connection of the first heat exchange pipe and the second heat exchange pipe is achieved, assembling is easy, machining efficiency is high, and the heat exchanger is suitable for large-scale popularization and application. And the problem of poor brazing can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a heat exchanger and a HVAC device. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] When the microchannel heat exchanger arranges the flat tubes into multiple rows, in order to realize the structure of separating multiple sections in the header that connects the rows of flat tubes to each other, two headers are usually connected by punching holes in the middle, and the upper and lower flat tubes are separated by a partition. Therefore, the assembly process of the header is complicated, the processing efficiency is low, and there are many welding points, which is prone to poor brazing between the partition and the header. In order to ensure the insertion space of the flat tubes, the header needs a large space, resulting in a large amount of refrigerant filling. Utility Model Content

[0004] The purpose of the utility model is to at least solve the technical problems of the existing heat exchanger assembly process being complicated and the processing efficiency being low. This purpose is achieved through the following technical solutions:

[0005] The first aspect of the utility model provides a heat exchanger, comprising:

[0006] A plurality of heat exchange tube assemblies, wherein the plurality of heat exchange tube assemblies are arranged in parallel along a first direction, and the heat exchange tube assemblies include a first heat exchange tube and a second heat exchange tube arranged in parallel;

[0007] a connecting pipe assembly, comprising a plurality of connecting pipes arranged in parallel along the first direction, wherein the positions of the connecting pipes in the first direction correspond to the heat exchange pipe assemblies, and in one of the heat exchange pipe assemblies, the same end of the first heat exchange pipe and the second heat exchange pipe are connected through the connecting pipe;

[0008] The connection assembly has at least two mounting parts arranged in parallel along the first direction, and the same ends of at least two connecting pipes are respectively connected to the at least two mounting parts.

[0009] The heat exchanger proposed in the utility model connects the first heat exchange tube and the second heat exchange tube arranged side by side through a connecting pipe assembly, and fixes the multiple connecting pipes arranged side by side through multiple mounting parts of the connecting assembly, thereby realizing a one-to-one connection between the first heat exchange tube and the second heat exchange tube. The assembly is simple, the processing efficiency is high, and the problem of poor brazing can be avoided.

[0010] In addition, the heat exchanger according to the utility model may also have the following additional technical features:

[0011] In some embodiments of the present invention, a first connecting hole and a second connecting hole are provided on the peripheral wall of the connecting tube, the first end of the first heat exchange tube is inserted into the first connecting hole, and the first end of the second heat exchange tube is inserted into the second connecting hole.

[0012] In some embodiments of the present utility model, a flow cavity is formed inside the connecting pipe, the flow cross section of the flow cavity is circular, and the diameter value of the flow cross section of the flow cavity is D;

[0013] The depth of the first heat exchange tube inserted into the flow cavity is L1, D is greater than or equal to 2L1, and / or the depth of the second heat exchange tube inserted into the flow cavity is L2, D is greater than or equal to 2L2.

[0014] In some embodiments of the present utility model, a flow cavity is formed inside the connecting pipe, the flow cross section of the flow cavity is circular, and the diameter of the flow cross section of the flow cavity is D;

[0015] Among them, the first end of the first heat exchange tube has a first necking, and along the radial direction of the first heat exchange tube, the width of the first necking is W1, and D is greater than or equal to 2W1, and / or the first end of the second heat exchange tube has a second necking, along the radial direction of the first heat exchange tube, the width of the second necking is W2, and D is greater than or equal to 2W2.

[0016] In some embodiments of the utility model, the connecting assembly includes at least two first connecting caps arranged in parallel along the first direction, the outer peripheral walls of two adjacent first connecting caps are connected to each other, the mounting portion includes a mounting groove arranged on one axial side of the first connecting cap, and the connecting pipe is inserted into the mounting groove.

[0017] In some embodiments of the utility model, the connecting assembly includes at least two second connecting caps arranged in parallel along a first direction, the outer peripheral walls of two adjacent second connecting caps are connected to each other, and the mounting portion includes a mounting protrusion arranged on one axial side of the second connecting cap, and the mounting protrusion is inserted into the connecting tube.

[0018] In some embodiments of the present invention, the length of the connecting pipe extending into the mounting groove is greater than 2 mm.

[0019] In some embodiments of the present invention, the length of the mounting protrusion extending into the connecting tube is greater than 2 mm.

[0020] In some embodiments of the present invention, the connecting tube includes a tube body and two sealing parts, the same end of the first heat exchange tube and the second heat exchange tube are connected to the interior of the tube body, and the two sealing parts are arranged at both ends of the tube body and seal the tube body.

[0021] In some embodiments of the present invention, the radial cross-section of the connecting pipe is one of rectangular, semicircular, elliptical, and triangular.

[0022] In some embodiments of the present invention, the heat exchanger further comprises a liquid collecting pipe and an air collecting pipe, and one end of all the first heat exchange tubes away from the connecting tube assembly is connected to the liquid collecting pipe, and one end of all the second heat exchange tubes away from the connecting tube assembly is connected to the air collecting pipe.

[0023] In some embodiments of the present invention, both the first heat exchange tube and the second heat exchange tube are flat tube structures.

[0024] The second aspect of the utility model provides a HVAC device, including the heat exchanger provided in the first aspect of the utility model.

[0025] The HVAC equipment proposed in the second aspect of the utility model has the same beneficial effects as the heat exchanger proposed in the first aspect of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0027] Figure 1 The schematic diagram of the structure of the heat exchanger according to the embodiment of the utility model is schematically shown;

[0028] Figure 2 A partial structural diagram of a heat exchanger according to an embodiment of the utility model is schematically shown;

[0029] Figure 3 The schematic diagram schematically shows the structure of the assembly of the connecting pipe assembly and the connecting assembly according to the embodiment of the utility model;

[0030] Figure 4 A schematic cross-sectional structural diagram of the assembly of a connecting pipe assembly and a connecting assembly according to an embodiment of the utility model is schematically shown;

[0031] Figure 5 A schematic cross-sectional structural diagram schematically shows the assembly dimension relationship between the connecting pipe assembly and the connecting assembly according to an embodiment of the utility model;

[0032] Figure 6A schematic cross-sectional structural diagram of the assembly of a connecting pipe assembly according to an embodiment of the utility model and a connecting assembly according to another embodiment is shown;

[0033] Figure 7 The structure diagram of the connecting pipe with the sealing part according to the embodiment of the utility model is schematically shown;

[0034] Figure 8 The schematic diagram of the structure of the connecting pipe according to the embodiment of the utility model is schematically shown;

[0035] Fig. 9 The schematic diagram shows the structure of the connecting tube (elliptical tube body) assembled with the first heat exchange tube according to the embodiment of the utility model;

[0036] Fig.10 The schematic diagram shows the structure of the connecting tube (rectangular tube body) assembled with the first heat exchange tube according to the embodiment of the utility model;

[0037] Fig.11 The schematic diagram shows the structure of the connecting pipe (semicircular tube body) assembled with the first heat exchange tube according to the embodiment of the utility model;

[0038] Fig.12 The schematic diagram shows the structure of the connecting tube (triangular tube body) assembled with the first heat exchange tube according to the embodiment of the utility model;

[0039] The symbols in the accompanying drawings are as follows:

[0040] 100. Heat exchanger;

[0041] 10. heat exchange tube assembly; 11. first heat exchange tube; 111. first shrinkage; 12. second heat exchange tube; 121. second shrinkage;

[0042] 20. Connecting pipe assembly; 21. Connecting pipe; 211. Pipe body; 212. Sealing portion; 22. First connecting hole; 23. Second connecting hole; 24. Flow chamber;

[0043] 30. Connecting assembly; 31. Mounting portion; 311. Mounting groove; 312. Mounting protrusion; 321. First connecting cap; 322. Second connecting cap;

[0044] 40. Liquid collecting pipe; 41. Gas collecting pipe. DETAILED DESCRIPTION

[0045] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0047] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0048] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." can include both upper and lower orientations. The device can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0049] like Figures 1 to 12 As shown, Figure 1 A in the middle represents the first direction. The first aspect of the utility model proposes a heat exchanger 100, including a plurality of heat exchange tube assemblies 10, a connecting tube assembly 20 and a connecting assembly 30. The plurality of heat exchange tube assemblies 10 are arranged in parallel along the first direction, and the heat exchange tube assembly 10 includes a first heat exchange tube 11 and a second heat exchange tube 12 arranged in parallel. The connecting tube assembly 20 includes a plurality of connecting tubes 21 arranged in parallel along the first direction. The position of the connecting tube 21 in the first direction corresponds to the heat exchange tube assembly 10. In one heat exchange tube assembly 10, the same end of the first heat exchange tube 11 and the second heat exchange tube 12 are connected through the connecting tube 21. The connecting assembly 30 has at least two mounting portions 31 arranged in parallel along the first direction, and the same ends of at least two connecting tubes 21 are respectively connected to the at least two mounting portions 31.

[0050] The heat exchanger 100 proposed in the utility model connects the first heat exchange tube 11 and the second heat exchange tube 12 arranged side by side through the connecting pipe assembly 20, and fixes the multiple connecting tubes 21 arranged side by side through the multiple mounting parts 31 of the connecting assembly 30, so as to realize a one-to-one connection between the first heat exchange tube 11 and the second heat exchange tube 12, which is simple to assemble, has high processing efficiency, and can avoid the problem of poor brazing.

[0051] In some embodiments of the present invention, a first connection hole 22 and a second connection hole 23 are provided on the peripheral wall of the connecting tube 21 , the first end of the first heat exchange tube 11 is inserted into the first connection hole 22 , and the first end of the second heat exchange tube 12 is inserted into the second connection hole 23 .

[0052] It can be understood that the shapes of the first connecting hole 22 and the second connecting hole 23 are adapted to the first heat exchange tube 11 and the second heat exchange tube 12, and can be circular or flat-mouthed, so that the first heat exchange tube 11 and the second heat exchange tube 12 can be respectively inserted into the first connecting hole 22 and the second connecting hole 23, so that the first heat exchange tube 11 and the second heat exchange tube 12 are connected to each other through the connecting tube 21.

[0053] In some embodiments of the utility model, a flow cavity 24 is formed inside the connecting tube 21, the flow cross section of the flow cavity 24 is circular, the length of the first heat exchange tube 11 inserted into the flow cavity 24 is L1, the length of the second heat exchange tube 12 inserted into the flow cavity 24 is L2, the diameter value of the flow cross section of the flow cavity 24 is D, D is greater than or equal to 2L1 and / or D is greater than or equal to 2L2.

[0054] It can be understood that one end of the first heat exchange tube 11 and the second heat exchange tube 12 are inserted into the flow chamber 24 for a certain length. Specifically, the diameter value D of the flow cross section of the flow chamber 24 can be greater than or equal to the length L1 of one end of the first heat exchange tube 11 inserted into the flow chamber 24 and the length L2 of one end of the second heat exchange tube 12 inserted into the flow chamber 24, so that the flow space of the flow chamber 24 will not be too small to cause excessive fluid pressure drop, thereby improving the heat exchange efficiency.

[0055] In some embodiments of the utility model, a flow cavity 24 is formed inside the connecting tube 21, and the flow cross section of the flow cavity 24 is circular. The first end of the first heat exchange tube 11 has a first constriction 111, and the first end of the second heat exchange tube 12 has a second constriction 121. Along the radial direction of the first heat exchange tube 11, the width of the first constriction 111 and the width of the second constriction 121 are set to W1 and W2 respectively. The diameter of the flow cross section of the flow cavity 24 is D, and D is greater than or equal to 2W1 and / or D is greater than or equal to 2W2.

[0056] It can be understood that the cross-sectional area of ​​a part of the tube section at the first end of the first heat exchange tube 11 is smaller than the cross-sectional area of ​​other parts, so that the first constriction 111 of the first heat exchange tube 11 can be inserted into the first connecting hole 22 and achieve a good sealing effect, and the second constriction 121 of the second heat exchange tube 12 also has the same beneficial effect. The width of the first constriction 111 and the width of the second constriction 121 are set to W1 and W2 respectively, and the diameter of the flow cross section of the flow chamber 24 is set to D, wherein D is greater than or equal to 2W1 and / or D is greater than or equal to 2W2, so that the flow space of the flow chamber 24 will not be too small to cause excessive fluid pressure drop, thereby improving the heat exchange efficiency.

[0057] In some embodiments of the utility model, the connecting assembly 30 includes at least two first connecting caps 321 arranged in parallel along a first direction, the outer peripheral walls of two adjacent first connecting caps 321 are connected to each other, and the mounting portion 31 includes a mounting groove 311 arranged on one axial side of the first connecting cap 321, and the connecting pipe 21 is inserted into the mounting groove 311.

[0058] It can be understood that the connecting component 30 is composed of a plurality of first connecting caps 321 connected in sequence along a first direction. The outer peripheral walls of two adjacent first connecting caps 321 can be connected by welding or integral injection molding. A circular, triangular or rectangular mounting groove 311 can be provided at one axial end of the first connecting cap 321 to facilitate the insertion of the end of the connecting tube 21. The shape of the mounting groove 311 can be adapted to the end of the connecting tube 21, and the two can be interference-connected to enhance sealing and reliability. The plurality of parallel connecting tubes 21 are fixed by a plurality of first mounting caps connected in series, which is convenient to install, avoids welding, has high processing efficiency, and has low cost.

[0059] In some embodiments of the utility model, the connecting assembly 30 includes at least two third connecting caps 322 arranged in parallel along a first direction, the outer peripheral walls of two adjacent second connecting caps 322 are connected to each other, and the mounting portion 31 includes a mounting protrusion 312 arranged on one axial side of the second connecting cap 322, and the mounting protrusion 312 is inserted into the connecting tube 21.

[0060] It can be understood that the connecting assembly 30 is composed of a plurality of second connecting caps 322 connected in sequence along a first direction. The outer peripheral walls of two adjacent second connecting caps 322 can be connected by welding or integral injection molding. A circular, triangular or rectangular mounting protrusion 312 can be provided at one axial end of the second connecting cap 322 to facilitate the end socketing of the connecting tube 21. The shape of the mounting protrusion 312 can be adapted to the end of the connecting tube 21, and the two can be interference connected to enhance sealing and reliability. The plurality of parallel connecting tubes 21 are fixed by a plurality of second mounting caps connected in series, which is convenient to install, avoids welding, has high processing efficiency, and has low cost.

[0061] In some embodiments of the present invention, the length of the installation protrusion 312 extending into the connecting tube 21 is greater than 2 mm, or the length of the connecting tube 21 extending into the installation groove 311 is greater than 2 mm.

[0062] It is understandable that in order to ensure the brazing area, it is necessary to ensure that the contact length is greater than 2 mm, that is, the length T of the mounting protrusion 312 extending into the connecting pipe 21 is greater than 2 mm, or the length T of the connecting pipe 21 extending into the mounting groove 311 is greater than 2 mm, so that the brazing is more reliable and the reliability of the installation between the connecting pipe 21 and the connecting assembly 30 and the reliability of the flow channel sealing are improved.

[0063] In some embodiments of the present invention, the connecting tube 21 includes a tube body 211 and two sealing parts 212. The same end of the first heat exchange tube 11 and the second heat exchange tube 12 are connected to the interior of the tube body 211. The two sealing parts 212 are arranged at both ends of the tube body 211 and seal the tube body 211.

[0064] It is understandable that the sealing portion 212 can be hemispherical or plate-shaped, and its shape is compatible with the end of the tube body 211. The sealing portion 212 can be connected to the end of the tube body 211 by spin sealing to improve sealing reliability.

[0065] In some embodiments of the present invention, the radial cross-section of the connecting pipe 21 is one of a rectangular, semicircular, elliptical, and triangular shape.

[0066] It is understandable that the radial cross section of the connecting pipe 21 can be set according to actual needs. Accordingly, the shapes of the mounting groove 311 and the mounting protrusion 312 are also adapted to the radial cross section of the connecting pipe 21, making the installation more convenient.

[0067] In some embodiments of the present invention, the heat exchanger 100 also includes a liquid collecting pipe 40 and an air collecting pipe 41, and the ends of all the first heat exchange tubes 11 away from the connecting pipe assembly 20 are connected to the liquid collecting pipe 40, and the ends of all the second heat exchange tubes 12 away from the connecting pipe assembly 20 are connected to the air collecting pipe 41.

[0068] It is understandable that when the heat exchanger 100 is used in the indoor unit of the air conditioning system, the refrigerant flows from the liquid collecting pipe 40 into the first heat exchange tube 11 for heat exchange and evaporation, then flows into the second heat exchange tube 12 through the connecting pipe 21 to continue heat exchange and evaporation in a gas state, and finally flows out of the heat exchanger 100 through the gas collecting pipe 41. By providing the liquid collecting pipe 40 and the gas collecting pipe 41, it is convenient to set the flow channel, distribute the refrigerant to multiple heat exchange tubes, and finally collect and concentrate the refrigerant after heat exchange and flow out of the heat exchanger 100.

[0069] In some embodiments of the present invention, the first heat exchange tube 11 and the second heat exchange tube 12 are both flat tube structures.

[0070] It can be understood that the cross-sections of the first heat exchange tube 11 and the second heat exchange tube 12 are both rectangular or waist-shaped.

[0071] The second aspect of the present invention provides a HVAC device, including the heat exchanger 100 provided in the first aspect of the present invention.

[0072] The HVAC equipment can be an air conditioner. The heat exchanger 100 provided in the first aspect of the utility model is used as the heat exchanger 100 of the indoor unit of the air conditioner. The refrigerant evaporates and absorbs heat through the heat exchanger 100, and the fan blows cold air into the room for cooling. The HVAC equipment provided in the second aspect of the utility model has the same beneficial effects as the heat exchanger 100 provided in the first aspect of the utility model.

[0073] The above are only preferred specific implementations of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model shall be based on the protection scope of the claims.

Claims

1. A heat exchanger, characterized in that: include: A plurality of heat exchange tube assemblies, wherein the plurality of heat exchange tube assemblies are arranged in parallel along a first direction, and the heat exchange tube assemblies include a first heat exchange tube and a second heat exchange tube arranged in parallel; a connecting pipe assembly, comprising a plurality of connecting pipes arranged in parallel along the first direction, wherein the positions of the connecting pipes in the first direction correspond to the heat exchange pipe assemblies, and in one of the heat exchange pipe assemblies, the same end of the first heat exchange pipe and the second heat exchange pipe are connected through the connecting pipe; The connection assembly has at least two mounting parts arranged in parallel along the first direction, and the same ends of at least two connecting pipes are respectively connected to the at least two mounting parts.

2. The heat exchanger according to claim 1, characterized in that: A first connecting hole and a second connecting hole are provided on a peripheral wall of the connecting tube. The first end of the first heat exchange tube is plugged into the first connecting hole, and the first end of the second heat exchange tube is plugged into the second connecting hole.

3. The heat exchanger according to claim 2, characterized in that: A flow cavity is formed inside the connecting pipe, the flow cross section of the flow cavity is circular, and the diameter value of the flow cross section of the flow cavity is D; The depth of the first heat exchange tube inserted into the flow cavity is L1, D is greater than or equal to 2L1, and / or the depth of the second heat exchange tube inserted into the flow cavity is L2, D is greater than or equal to 2L2.

4. The heat exchanger according to claim 2, characterized in that: A flow cavity is formed inside the connecting pipe, the flow cross section of the flow cavity is circular, and the diameter of the flow cross section of the flow cavity is D; Among them, the first end of the first heat exchange tube has a first necking, and along the radial direction of the first heat exchange tube, the width of the first necking is W1, and D is greater than or equal to 2W1, and / or the first end of the second heat exchange tube has a second necking, along the radial direction of the first heat exchange tube, the width of the second necking is W2, and D is greater than or equal to 2W2.

5. The heat exchanger according to claim 1, characterized in that: The connecting assembly includes at least two first connecting caps arranged in parallel along the first direction, the outer peripheral walls of two adjacent first connecting caps are connected to each other, the mounting portion includes a mounting groove arranged on one axial side of the first connecting cap, and the connecting pipe is inserted into the mounting groove.

6. The heat exchanger according to claim 1, characterized in that The connecting assembly includes at least two second connecting caps arranged in parallel along a first direction, the outer peripheral walls of two adjacent second connecting caps are connected to each other, and the mounting portion includes a mounting protrusion arranged on one axial side of the second connecting cap, and the mounting protrusion is inserted into the connecting tube.

7. The heat exchanger according to claim 5, characterized in that The length of the connecting pipe extending into the mounting groove is greater than 2 mm.

8. The heat exchanger according to claim 6, characterized in that The length of the mounting protrusion extending into the connecting pipe is greater than 2 mm.

9. The heat exchanger according to any one of claims 1 to 8, characterized in that: The connecting tube includes a tube body and two sealing parts. The same end of the first heat exchange tube and the second heat exchange tube is communicated with the interior of the tube body. The two sealing parts are arranged at both ends of the tube body and seal the tube body.

10. The heat exchanger according to any one of claims 1 to 8, characterized in that: The radial cross section of the connecting pipe is one of a rectangle, a semicircle, an ellipse and a triangle.

11. The heat exchanger according to any one of claims 1 to 8, characterized in that: The heat exchanger further includes a liquid collecting pipe and an air collecting pipe. One end of all the first heat exchange pipes away from the connecting pipe assembly is connected to the liquid collecting pipe, and one end of all the second heat exchange pipes away from the connecting pipe assembly is connected to the air collecting pipe.

12. The heat exchanger according to any one of claims 1 to 8, characterized in that: The first heat exchange tube and the second heat exchange tube are both flat tube structures.

13. A HVAC equipment, characterized in that: A heat exchanger comprising any one of claims 1 to 12.

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