Heat exchanger and air conditioning system

Abstract

The invention discloses a heat exchanger and an air conditioning system.The heat exchanger comprises a plurality of heat exchange units which are sequentially arranged in the first direction, every two adjacent heat exchange units are connected, each heat exchange unit is independently formed, and each heat exchange unit comprises a first collecting pipe, a second collecting pipe and at least one heat exchange single body; the first collecting pipe and the second collecting pipe are oppositely arranged in a spaced mode, the heat exchange single bodies are provided with heat exchange channels, and the heat exchange single bodies are connected between the first collecting pipe and the second collecting pipe. According to the heat exchanger provided by the embodiment of the invention, the heat exchanger comprises a plurality of heat exchange units which are sequentially arranged, each heat exchange unit is independently formed, and the heat exchange units with the corresponding number can be selected according to the size of the heat exchanger to be assembled to form the heat exchanger with the corresponding size; modularized manufacturing can be conducted according to the sizes of heat exchangers needed by different systems, the mold opening cost and the mold opening time are saved, and therefore the production cost can be reduced, and the production efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a heat exchanger and an air conditioning system. Background Art

[0002] In the related art, fin-tube heat exchangers and microchannel heat exchangers are both common types of heat exchangers. There is a contact thermal resistance between the copper tubes and fins of the fin-tube heat exchanger, which leads to low heat transfer efficiency, thereby reducing the heat exchange efficiency of the heat exchanger. Compared with the fin-tube heat exchanger, the microchannel heat exchanger has reduced contact thermal resistance and improved the heat exchange efficiency to a certain extent. However, when designing microchannel heat exchangers of different sizes to match the corresponding system according to needs, microchannel heat exchangers of different sizes need to design corresponding molds respectively. Due to the high mold opening cost and the need to increase the mold opening time, this not only increases the production cost, but also reduces the production efficiency. Therefore, there is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a heat exchanger, which includes a plurality of heat exchange units arranged in sequence and each heat exchange unit is independently formed. A corresponding number of heat exchange units can be selected according to the size of the heat exchanger for assembly to form a heat exchanger of a corresponding size. The heat exchanger can be modularly manufactured according to the size of the heat exchanger required by different systems, thereby saving mold opening costs and mold opening time, thereby reducing production costs and improving production efficiency.

[0004] The present invention also provides an air conditioning system having the heat exchanger.

[0005] According to the first aspect of the present invention, the heat exchanger comprises: a plurality of heat exchange units, the plurality of heat exchange units are arranged in sequence along a first direction, two adjacent heat exchange units are connected, each of the heat exchange units is independently formed, each of the heat exchange units comprises a first collecting tube, a second collecting tube and at least one heat exchange monomer, the first collecting tube and the second collecting tube are opposite to and spaced apart along a second direction, the second direction intersects with the first direction, the first collecting tube has a first collecting cavity, the second collecting tube has a second collecting cavity, the heat exchange monomer has a heat exchange channel, the heat exchange monomer is connected between the first collecting tube and the second collecting tube, and the heat exchange channel connects the corresponding first collecting cavity and the second collecting cavity.

[0006] According to the heat exchanger of the embodiment of the present invention, the heat exchanger includes a plurality of heat exchange units arranged in sequence and each heat exchange unit is independently molded. A corresponding number of heat exchange units can be selected according to the size of the heat exchanger for assembly to form a heat exchanger of corresponding size. The heat exchanger can be modularly manufactured according to the size of the heat exchanger required by different systems, thereby saving mold opening costs and mold opening time, thereby reducing production costs and improving production efficiency.

[0007] According to some embodiments of the present invention, two adjacent heat exchange units are connected by welding or in a detachable manner.

[0008] According to some embodiments of the present invention, at least part of the heat exchange units comprises 1 to 5 heat exchange monomers.

[0009] According to some embodiments of the present invention, when a single heat exchange unit includes a plurality of the heat exchange monomers, the plurality of the heat exchange monomers of the single heat exchange unit are arranged at intervals along the first direction.

[0010] According to some embodiments of the present invention, at least some of the heat exchange units are identical.

[0011] According to some embodiments of the present invention, a first plug hole connected to the first collecting cavity is formed on the first collecting pipe, a second plug hole connected to the second collecting cavity is formed on the second collecting pipe, one end of the heat exchange unit is inserted into the first plug hole, and the other end of the heat exchange unit is inserted into the second plug hole.

[0012] According to some embodiments of the present invention, the second direction is an up-down direction, and the heat exchange unit extends along the second direction.

[0013] According to some embodiments of the present invention, the first collecting pipes of the plurality of heat exchange units are arranged in sequence along the first direction, and two adjacent first collecting pipes are connected; the second collecting pipes of the plurality of heat exchange units are arranged in sequence along the first direction, and two adjacent second collecting pipes are connected.

[0014] According to some embodiments of the present invention, the first current collecting tube has a first mating surface, and the first mating surfaces of two adjacent first current collecting tubes are opposite and connected along the first direction; and / or, the second current collecting tube has a second mating surface, and the second mating surfaces of two adjacent second current collecting tubes are opposite and connected along the first direction.

[0015] According to some embodiments of the present invention, the first mating surfaces of two adjacent first current collectors are connected by welding; and / or the second mating surfaces of two adjacent second current collectors are connected by welding.

[0016] According to some embodiments of the present invention, the first mating surface is formed as a plane; and / or the second mating surface is formed as a plane.

[0017] According to some embodiments of the present invention, the first mating surface surrounds the outer circumference of the first manifold; and / or the second mating surface surrounds the outer circumference of the second manifold.

[0018] According to some embodiments of the present invention, the cross section of the first current collecting pipe is rectangular; and / or the cross section of the second current collecting pipe is rectangular.

[0019] According to some embodiments of the present invention, the first manifolds of at least some adjacent two first manifolds are connected.

[0020] According to some embodiments of the present invention, an air flow channel extending along a third direction is defined between two adjacent heat exchange units along the first direction, the third direction, the first direction and the second direction intersect each other, the heat exchange unit is in the shape of a plate, and the surface of the heat exchange unit in the thickness direction faces the air flow channel; the heat exchange unit has a plurality of heat exchange channels arranged at intervals along the third direction.

[0021] An air conditioning system according to an embodiment of a second aspect of the present invention comprises: a heat exchanger according to an embodiment of the first aspect of the present invention.

[0022] According to the air-conditioning system of an embodiment of the present invention, by setting the above-mentioned heat exchanger, the heat exchanger includes a plurality of heat exchange units, and the heat exchanger includes a plurality of heat exchange units arranged in sequence and each heat exchange unit is independently molded. A corresponding number of heat exchange units can be selected according to the size of the heat exchanger for assembly to form a heat exchanger of a corresponding size. Modular production can be performed according to the size of the heat exchanger required by different systems, thereby saving mold opening costs and mold opening time, thereby reducing production costs and improving production efficiency.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0025] Figure 1 is a schematic diagram of a heat exchanger according to some embodiments of the present invention;

[0026] Figure 2 yes Figure 1 A local enlarged view at point A;

[0027] Figure 3 yes Figure 1 A schematic diagram of a heat exchange unit of a heat exchanger in FIG.

[0028] Figure 4 yes Figure 3 A local enlarged view at point B;

[0029] Figure 5 yes Figure 3 A local enlarged view at C;

[0030] Figure 6 yes Figure 3 A schematic diagram of a heat exchange monomer of a heat exchange unit in FIG.

[0031] Figure 7 yes Figure 6 A schematic diagram of another perspective of the heat exchange unit in the embodiment;

[0032] Figure 8 yes Figure 3 A schematic diagram of a first header or a second header of a heat exchange unit in FIG.

[0033] Fig. 9 is a schematic diagram of an air conditioning system according to some embodiments of the present invention.

[0034] Reference numerals:

[0035] 100. Air conditioning system;

[0036] 10. heat exchanger; 11. heat exchange unit; 12. first manifold; 121. first manifold cavity; 122. first plug hole; 123. first mating surface; 13. second manifold; 131. second manifold cavity; 132. second plug hole; 133. second mating surface; 14. heat exchange unit; 141. heat exchange channel; 15. air flow channel;

[0037] 20. Outdoor heat exchanger; 201. First inlet and outlet; 202. Second inlet and outlet; 21. Indoor heat exchanger; 22. Indoor fan; 23. Throttling component; 24. First sensor; 25. Second sensor; 26. Oil separator; 27. Gas-liquid separator; 28. First control valve; 29. ​​Second control valve;

[0038] 30. Compressor; 31. Exhaust port; 32. Return air port. DETAILED DESCRIPTION

[0039] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0040] A heat exchanger 10 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0041] Reference Figure 1-Figure 8 The heat exchanger 10 according to the first embodiment of the present invention comprises a plurality of heat exchange units 11, which are arranged in sequence along a first direction (refer to the e1 direction of the accompanying drawings), and two adjacent heat exchange units 11 are connected. Each heat exchange unit 11 is independently formed, and each heat exchange unit 11 comprises a first header 12, a second header 13 and at least one heat exchange monomer 14. The heat exchanger 10 comprises a plurality of heat exchange units 11 arranged in sequence along a first direction, and adjacent heat exchange units 11 are connected to form the heat exchanger 10, so that the modular production of the heat exchanger 10 can be realized, thereby reducing production costs and improving production efficiency.

[0042] For example, the number of heat exchange units 11 can be determined according to the size of the heat exchanger 10. Different numbers of heat exchange units 11 connected in combination can form heat exchangers 10 of different sizes, thereby enabling modular production of the heat exchanger 10. There is no need to design and produce corresponding molds for heat exchangers 10 of different sizes, which greatly reduces the mold opening cost and saves mold opening time, thereby improving the production efficiency of the heat exchanger 10.

[0043] It should be noted that the term “plurality” in the present invention refers to two or more than two.

[0044] The first manifold 12 and the second manifold 13 are arranged oppositely and spaced apart along a second direction (refer to the e2 direction of the accompanying drawings), and the second direction intersects with the first direction, for example, the first direction and the second direction are perpendicular to each other. The first manifold 12 has a first manifold cavity 121, the second manifold 13 has a second manifold cavity 131, and the heat exchange monomer 14 has a heat exchange channel 141. The heat exchange monomer 14 is connected between the first manifold 12 and the second manifold 13, and the heat exchange channel 141 connects the corresponding first manifold cavity 121 and the second manifold cavity 131. The heat exchange medium (for example, the refrigerant) can flow into the heat exchange channel 141 from one of the first manifold cavity 121 or the second manifold cavity 131, and after passing through the heat exchange channel 141, it flows out from the other. For example, the refrigerant can flow into the heat exchange channel 141 from the first manifold cavity 121, and after passing through the heat exchange channel 141, it flows out from the second manifold cavity 131.

[0045] In addition, the connection between two adjacent heat exchange units 11 can be direct connection or indirect connection. For example, two adjacent heat exchange units 11 can be directly connected by welding; for another example, the heat exchanger 10 can also include a connecting bracket, and the connection between the two adjacent welding units 11 is completed by connecting the two adjacent welding units to the connecting bracket.

[0046] According to the heat exchanger 10 of the embodiment of the present invention, the heat exchanger 10 includes a plurality of heat exchange units 11 arranged in sequence and each heat exchange unit 11 is independently molded. A corresponding number of heat exchange units 11 can be selected according to the size of the heat exchanger 10 for assembly to form a heat exchanger 10 of a corresponding size. The heat exchanger 10 can be modularly manufactured according to the size required by different systems, thereby saving mold opening costs and mold opening time, thereby reducing production costs and improving production efficiency.

[0047] Reference Figure 1-Figure 5 According to some embodiments of the present invention, two adjacent heat exchange units 11 are connected by welding. Through welding, the connection between the two adjacent heat exchange units 11 is more stable and has higher strength, which can improve the overall structural strength of the heat exchanger 10 to a certain extent.

[0048] Reference Figure 1-Figure 5 According to some embodiments of the present invention, two adjacent heat exchange units 11 are detachably connected. Two adjacent heat exchange units 11 are detachably connected, and the heat exchange units 11 can be disassembled and replaced, which is more flexible. For example, if part of the heat exchange units 11 in the heat exchanger 10 is damaged, the damaged heat exchange units 11 can be disassembled and replaced to ensure that the heat exchanger 10 can operate normally without replacing the entire heat exchanger 10, which is more flexible and can save costs to a certain extent.

[0049] Reference Figure 1-Figure 5 According to some embodiments of the present invention, at least some of the heat exchange units 11 include 1 to 5 heat exchange monomers 14. That is, some of the heat exchange units 11 may include 1 to 5 heat exchange monomers 14, and another part of the heat exchange units 11 may include 6 or more heat exchange monomers 14; or each heat exchange unit 11 may include 1 to 5 heat exchange monomers 14.

[0050] The number of heat exchange monomers 14 included in at least some of the heat exchange units 11 is 1 to 5. For example, the number of heat exchange monomers 14 included in at least some of the heat exchange units 11 may be 1, 2, 3, 4, or 5. If the number of heat exchange monomers 14 included in each heat exchange unit 11 is greater than 5, the number of heat exchange monomers 14 included in each heat exchange monomer 14 will be too large. When heat exchangers 10 of different sizes are formed by different numbers of heat exchange units 11, the heat exchange units 11 containing too many heat exchange monomers 14 have low flexibility, which is not conducive to the modular design and production of the heat exchanger 10. For example, if the number of heat exchange monomers 14 included in each heat exchange unit 11 is greater than 5, some smaller heat exchangers 10 containing less than 5 heat exchange monomers 14 cannot be produced.

[0051] By setting the number of heat exchange monomers 14 included in at least part of the heat exchange units 11 to 1 to 5, the heat exchange units 11 including different numbers of heat exchange monomers 14 can form heat exchangers 10 of various sizes through various combinations, which can facilitate modular design and production of the heat exchanger 10 with high flexibility. Figure 2 Each heat exchange unit 11 includes a heat exchange monomer 14 , which can be beneficial to the modular design and production of the heat exchanger 10 .

[0052] Reference Figure 1-Figure 5 According to some embodiments of the present invention, when a single heat exchange unit 11 includes a plurality of heat exchange monomers 14, the plurality of heat exchange monomers 14 of the single heat exchange unit 11 are arranged at intervals along the first direction. The plurality of heat exchange monomers 14 are arranged at intervals, and there is a gap between two adjacent heat exchange monomers 14, so that airflow can flow in and out through the gap between the two heat exchange monomers 14, thereby ensuring the heat exchange capacity of the heat exchanger 10.

[0053] For example, the airflow is suitable for flowing through the heat exchange unit 14 along a third direction (refer to the e3 direction in the accompanying drawing), and the third direction intersects with both the first direction and the second direction. In the process of the airflow flowing through the heat exchange unit 14 along the third direction, the airflow exchanges heat with the refrigerant in the heat exchange unit 14, thereby adjusting the airflow temperature and realizing the heat exchange function.

[0054] Reference Figure 1-Figure 6 According to some embodiments of the present invention, at least some of the heat exchange units 11 are the same, that is, some of the heat exchange units 11 constituting the heat exchanger 10 may be the same, or all of the heat exchange units 11 constituting the heat exchanger 10 may be the same. The first header 12, the second header 13 and the heat exchange monomer 14 of the same heat exchange unit 11 are the same, which can facilitate the mass production of the heat exchange unit 11, reduce production costs and improve production efficiency. At the same time, it can facilitate the assembly of the heat exchanger 10, which is conducive to the modular design and production of the heat exchanger 10.

[0055] Optionally, the first header 12 and the second header 13 of the same heat exchange unit 11 may also be identical, which can avoid making corresponding molds for the first header 12 and the second header 13 respectively, further reducing mold making costs.

[0056] For example, refer to Figure 1 All the heat exchange units 11 constituting the heat exchanger 10 are the same, and the heat exchange units 11 can be mass-produced, which can reduce production costs and improve production efficiency.

[0057] Reference Figure 3 as well as Figure 8According to some embodiments of the present invention, a first plug hole 122 communicating with the first manifold 121 is formed on the first manifold 12, a second plug hole 132 communicating with the second manifold 131 is formed on the second manifold 13, one end of the heat exchange unit 14 is inserted into the first plug hole 122, and the other end of the heat exchange unit 14 is inserted into the second plug hole 132. By providing the first plug hole 122 communicating with the first manifold 121 on the first manifold 12 and providing the second plug hole 132 communicating with the second manifold 131 on the second manifold 13, the two ends of the heat exchange unit 14 can be respectively inserted into the first plug hole 122 and the second plug hole 132, which can facilitate the assembly of the heat exchange unit 11. In addition, the first socket 122 is connected to the first collecting chamber 121, and the second socket 132 is connected to the second collecting chamber 131. After the two ends of the heat exchange unit 14 are respectively inserted into the first socket 122 and the second socket 132, the heat exchange channel 141 of the heat exchange unit 14 can be connected to the first collecting chamber 121 and the second collecting chamber 131, thereby ensuring that the flow path of the refrigerant in the heat exchange unit 11 is smoother.

[0058] If the heat exchange unit 11 includes a heat exchange monomer 14, the number of the first socket 122 on the first collecting pipe 12 is one, and the number of the second socket 132 on the second collecting pipe 13 is one, the two ends of the heat exchange monomer 14 are respectively inserted into the first socket 122 and the second socket 132 to complete the assembly of the heat exchange unit 11, and the assembly process is relatively simple.

[0059] If the heat exchange unit 11 includes a plurality of heat exchange monomers 14, the number of the first plug holes 122 on the first header 12 and the number of the second plug holes 132 on the second header 13 are the same as the number of the heat exchange monomers 14, and the plurality of first plug holes 122 correspond to the plurality of second plug holes 132 one by one, and the two ends of the plurality of heat exchange monomers 14 are sequentially inserted into the corresponding first plug holes 122 and the second plug holes 132, the assembly of the heat exchange unit 11 can be completed, and the assembly process is relatively simple. For example, the heat exchange unit 11 includes five heat exchange monomers 14, the number of the first plug holes 122 on the first header 12 and the number of the second plug holes 132 on the second header 13 are both five, and the five first plug holes 122 correspond to the five second plug holes 132 one by one, and the two ends of the five heat exchange monomers 14 are sequentially inserted into the corresponding first plug holes 122 and the second plug holes 132, the assembly of the heat exchange unit 11 can be completed.

[0060] Optionally, after one end of the heat exchange unit 14 is inserted into the first plug hole 122, the connection between the heat exchange unit 14 and the first header 12 can be reinforced by welding at the position of the first plug hole 122; after the other end of the heat exchange unit 14 is inserted into the second plug hole 132, the connection between the heat exchange unit 14 and the second header 13 can be reinforced by welding at the position of the second plug hole 132 to ensure the stability of the connection between the heat exchange unit 14 and the first header 12 and the second header 13. For example, the connection between the heat exchange unit 14 and the first header 12 and the second header 13 can be reinforced by brazing.

[0061] Reference Figure 1 According to some embodiments of the present invention, the second direction is the up-down direction, and the heat exchange monomer 14 extends along the second direction. The heat exchange monomer 14 extends along the second direction and the second direction is the up-down direction. The two ends of the heat exchange monomer 14 along the up-down direction are respectively connected to the first manifold 121 and the second manifold 131. When the heat exchanger 10 is a condenser, when the outside temperature is low, it is easy to frost on the surface of the heat exchanger 10. When the surface of the heat exchanger 10 is frosted, it is necessary to defrost the surface of the heat exchanger 10. After defrosting, the frost turns into water. By setting the heat exchange monomer 14 to extend in the up-down direction, it is convenient for the defrosted water to flow down from the heat exchanger 10 under the action of gravity; when the heat exchanger 10 is an evaporator, the surface of the heat exchanger 10 is easy to generate condensed water. By setting the heat exchange monomer 14 to extend in the up-down direction, it is convenient for the condensed water to flow down from the heat exchanger 10 under the action of gravity. By setting the first direction as the up-and-down direction, the drainage performance of the heat exchanger 10 is effectively improved, and the defrosting performance of the heat exchanger 10 can be guaranteed, which is beneficial to improving the overall performance of the heat exchanger 10.

[0062] Reference Figure 1 According to some embodiments of the present invention, the first headers 12 of the plurality of heat exchange units 11 are sequentially arranged along the first direction, and two adjacent first headers 12 are connected; the second headers 13 of the plurality of heat exchange units 11 are sequentially arranged along the first direction, and two adjacent second headers 13 are connected. The connection process of two adjacent heat exchange units 11 is completed by connecting two adjacent first headers 12 and two adjacent second headers 13. The connection process is relatively simple, and both ends of the heat exchange unit 11 along the second direction are connected to the adjacent heat exchange unit 11. The connection is relatively stable, which can improve the overall structural strength of the heat exchanger 10 to a certain extent.

[0063] In addition, the first collecting pipes 12 of the multiple heat exchange units 11 are arranged in sequence, and the connection of two adjacent first collecting pipes 12 can form a long tube structure. The connection combination of the first collecting pipes 12 of different numbers of heat exchange units 11 can form long tube structures of different sizes. The number of heat exchange units 11 can be determined according to the size of the heat exchanger 10. By connecting and combining the first collecting pipes 12 of the multiple heat exchange units 11 to form a long tube structure adapted to the size of the heat exchanger 10, there is no need to design and manufacture molds of the first collecting pipes 12 of corresponding sizes for heat exchangers 10 of different sizes, thereby saving mold opening time and mold opening costs.

[0064] The second collecting pipes 13 of multiple heat exchange units 11 are arranged in sequence, and two adjacent second collecting pipes 13 are connected to form a long tube structure. The second collecting pipes 13 of different numbers of heat exchange units 11 are connected in combination to form long tube structures of different sizes. The number of heat exchange units 11 can be determined according to the size of the heat exchanger 10. By connecting and combining the second collecting pipes 13 of multiple heat exchange units 11 to form a long tube structure that matches the size of the heat exchanger 10, there is no need to design and manufacture molds of second collecting pipes 13 of corresponding sizes for heat exchangers 10 of different sizes, which saves mold opening time and mold opening cost.

[0065] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the first manifold 12 has a first mating surface 123, and the first mating surfaces 123 of two adjacent first manifolds 12 are opposite and connected along a first direction. By providing the first mating surface 123 on the first manifold 12, the two adjacent first manifolds 12 are mated through the first mating surface 123, which can provide a larger connection area for the two adjacent first manifolds 12, thereby facilitating the connection of the two adjacent first manifolds 12 and ensuring the connection effect of the two adjacent first manifolds 12.

[0066] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the second manifold 13 has a second mating surface 133, and the second mating surfaces 133 of two adjacent second manifolds 13 are opposite and connected along the first direction. By providing the second mating surface 133 on the second manifold 13, the two adjacent second manifolds 13 are mated through the second mating surface 133, which can provide a larger connection area for the two adjacent second manifolds 13, thereby facilitating the connection of the two adjacent second manifolds 13 and ensuring the connection effect of the two adjacent second manifolds 13.

[0067] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8According to some embodiments of the present invention, the first manifold 12 has a first mating surface 123, and the first mating surfaces 123 of two adjacent first manifolds 12 are opposite and connected along the first direction; the second manifold 13 has a second mating surface 133, and the second mating surfaces 133 of two adjacent second manifolds 13 are opposite and connected along the first direction. By providing the first mating surface 123 in the first manifold 12 and the second mating surface 133 in the second manifold 13, the two adjacent first manifolds 12 are connected through the first mating surface 123, and the two adjacent second manifolds 13 are connected through the second mating surface 133, which can provide a larger connection area for the two adjacent first manifolds 12 and the two adjacent second manifolds 13, thereby facilitating the connection of the two adjacent heat exchange units 11, and both ends of the heat exchange unit 11 along the second direction are connected to the adjacent heat exchange unit 11, and the connection is relatively stable.

[0068] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the first mating surfaces 123 of two adjacent first collecting tubes 12 are welded and connected, so that the two adjacent first collecting tubes 12 have better integrity and sealing after the connection is completed, and the leakage of heat exchange medium caused by the connection gap after the two adjacent first collecting tubes 12 are connected can be avoided. At the same time, the first mating surfaces 123 of the two adjacent first collecting tubes 12 are connected by welding, and the connection is relatively stable, which can improve the overall structural strength of the heat exchanger 10 to a certain extent.

[0069] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the second mating surfaces 133 of two adjacent second headers 13 are connected by welding, so that after the two adjacent second headers 13 are connected, they have good integrity and sealing, and can avoid the situation where there is a connection gap after the two adjacent second headers 13 are connected, resulting in leakage of heat exchange medium. At the same time, the second mating surfaces 133 of two adjacent second headers 13 are connected by welding, and the connection is relatively stable, which can improve the overall structural strength of the heat exchanger 10 to a certain extent.

[0070] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8According to some embodiments of the present invention, the first mating surfaces 123 of two adjacent first manifolds 12 are connected by welding, and the second mating surfaces 133 of two adjacent second manifolds 13 are connected by welding. The first mating surfaces 123 of the two first manifolds 12 of two adjacent heat exchange units 11 and the second mating surfaces 133 of the two second manifolds 13 are connected by welding, so that the two adjacent heat exchange units 11 have better integrity and sealing after the connection is completed, and the leakage of heat exchange medium caused by the connection gap after the connection of the two adjacent heat exchange units 11 can be avoided. At the same time, the first mating surfaces 123 of the two first manifolds 12 of the two adjacent heat exchange units 11 and the second mating surfaces 133 of the two second manifolds 13 are connected by welding, and the connection is relatively stable, which can improve the overall structural strength of the heat exchanger 10 to a certain extent.

[0071] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the first mating surface 123 is formed as a plane. By setting the first mating surface 123 as a plane, it is convenient to connect the first mating surfaces 123 of two adjacent first headers 12. For example, when the first mating surfaces 123 of two adjacent first headers 12 are connected by welding, the first mating surface 123 is formed as a plane, and the welding difficulty is low, which can facilitate the first mating surfaces 123 of two adjacent first headers 12 to be connected by welding.

[0072] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the second mating surface 133 is formed as a plane. By setting the second mating surface 133 as a plane, it is possible to facilitate the connection operation of the second mating surfaces 133 of two adjacent second headers 13. For example, when the second mating surfaces 133 of two adjacent second headers 13 are connected by welding, the second mating surface 133 is formed as a plane, and the welding difficulty is low, which can facilitate the welding connection of the second mating surfaces 133 of two adjacent second headers 13.

[0073] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8According to some embodiments of the present invention, the first mating surface 123 is formed as a plane, and the second mating surface 133 is formed as a plane. By setting the first mating surface 123 and the second mating surface 133 as planes, it is possible to facilitate the connection operation of the first mating surfaces 123 of two adjacent first headers 12 and the second mating surfaces 133 of two adjacent second headers 13. For example, when two adjacent heat exchange units 11 are connected by welding, the first mating surface 123 and the second mating surface 133 are both formed as planes, and the welding difficulty is relatively low, which can facilitate the welding connection of two adjacent heat exchange units 11.

[0074] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the first mating surface 123 surrounds the outer peripheral side of the first manifold 121. By setting the first mating surface 123 on the outer peripheral side of the first manifold 121, a larger connection area can be provided for the first mating surfaces 123 of two adjacent first manifolds 12, thereby facilitating the connection operation and ensuring the connection effect. At the same time, the first mating surface 123 surrounds the outer peripheral side of the first manifold 121. After the connection of the two adjacent first manifolds 12 is completed, the entire outer peripheral side of the first manifold 121 has good sealing performance, which can reduce or avoid the leakage of the heat exchange medium.

[0075] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the second mating surface 133 surrounds the outer peripheral side of the second manifold 131. By setting the second mating surface 133 on the outer peripheral side of the second manifold 131, a larger connection area can be provided for the second mating surfaces 133 of two adjacent second manifolds 13, thereby facilitating the connection operation and ensuring the connection effect. At the same time, the second mating surface 133 surrounds the outer peripheral side of the second manifold 131. After the connection of the two adjacent second manifolds 13 is completed, the entire outer peripheral side of the second manifold 131 has good sealing performance, which can reduce or avoid the leakage of the heat exchange medium.

[0076] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8According to some embodiments of the present invention, the first mating surface 123 surrounds the outer peripheral side of the first manifold 121, and the second mating surface 133 surrounds the outer peripheral side of the second manifold 131. By setting the first mating surface 123 on the outer peripheral side of the first manifold 121 and setting the second mating surface 133 on the outer peripheral side of the second manifold 131, a larger connection area can be provided for the first mating surface 123 of two adjacent first manifolds 12 and the second mating surface 133 of two adjacent second manifolds 13, thereby facilitating the connection operation and ensuring the connection effect. At the same time, after the connection of two adjacent heat exchange units 11 is completed, the entire outer peripheral side of the first manifold 121 and the second manifold 131 has good sealing performance, which can reduce or avoid the leakage of heat exchange medium.

[0077] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the cross section of the first current collecting tube 12 is rectangular. By setting the cross section of the first current collecting tube 12 to be rectangular, the shape of the first current collecting tube 12 is relatively simple, which can facilitate the processing and manufacturing of the first current collecting tube 12. At the same time, when two adjacent first current collecting tubes 12 are connected, by setting the cross section of the first current collecting tube 12 to be rectangular, the positioning of the two adjacent first current collecting tubes 12 during connection can be facilitated, so that the connection operation of the two adjacent first current collecting tubes 12 can be facilitated.

[0078] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8 According to some embodiments of the present invention, the cross section of the second current collecting tube 13 is rectangular. By setting the cross section of the second current collecting tube 13 to be rectangular, the shape of the second current collecting tube 13 is relatively simple, which can facilitate the processing and manufacturing of the second current collecting tube 13. At the same time, when two adjacent second current collecting tubes 13 are connected, by setting the cross section of the second current collecting tube 13 to be rectangular, the positioning of the two adjacent second current collecting tubes 13 during connection can be facilitated, so that the connection operation of the two adjacent second current collecting tubes 13 can be facilitated.

[0079] Reference Figure 1 , Figure 4-Figure 5 as well as Figure 8According to some embodiments of the present invention, the cross section of the first manifold 12 is rectangular, and the cross section of the second manifold 13 is rectangular. By setting the cross section of the first manifold 12 and the cross section of the second manifold 13 to be rectangular, the shapes of the first manifold 12 and the second manifold 13 are relatively simple, which can facilitate the processing and manufacturing of the first manifold 12 and the second manifold 13. At the same time, when two adjacent heat exchange units 11 are connected, by setting the cross section of the first manifold 12 and the cross section of the second manifold 13 to be rectangular, the positioning of the two adjacent heat exchange units 11 during connection can be facilitated, thereby facilitating the connection operation of the two adjacent heat exchange units 11.

[0080] Reference Figure 1-Figure 5 According to some embodiments of the present invention, at least some of the first manifolds 121 of two adjacent first manifolds 12 are connected, that is, the first manifolds 121 of two adjacent first manifolds 12 may be connected, or the first manifolds 121 of all two adjacent first manifolds 12 may be connected. At least some of the first manifolds 121 of two adjacent first manifolds 12 are connected. Through this arrangement, different flow paths of the heat exchange medium in the heat exchanger 10 can be designed according to specific usage conditions, with high flexibility.

[0081] For example, the first manifolds 121 of all two adjacent first manifolds 12 are connected, and the heat exchange medium can flow to the first manifold 121 of each heat exchange unit 11 and flow into the heat exchange channel 141 of each heat exchange unit 11 through each first manifold 121 .

[0082] Reference Figure 1-Figure 8 According to some embodiments of the present invention, an airflow channel 15 extending along a third direction is defined between two adjacent heat exchange units 14 along the first direction, the third direction, the first direction and the second direction intersect each other, the heat exchange unit 14 is in a flat plate shape, and the surface of the heat exchange unit 14 in the thickness direction faces the airflow channel 15, and the heat exchange unit 14 has a plurality of heat exchange channels 141 arranged at intervals along the third direction. By providing the airflow channel 15, when the airflow flows through the airflow channel 15 along the third direction, the airflow can exchange heat with the refrigerant in the heat exchange channel 141, thereby adjusting the airflow temperature and realizing the heat exchange function.

[0083] By providing a plurality of heat exchange channels 141 in the heat exchange unit 14, the heat exchange effect of the heat exchange unit 14 can be ensured, and the injection amount of the refrigerant can be reduced. In addition, the plurality of heat exchange channels 141 are arranged at intervals, which can ensure that the heat exchange effect of the heat exchange unit 14 is relatively uniform.

[0084] Reference Figure 7According to some embodiments of the present invention, in the third direction, the length L1 of the heat exchange monomer 14 is not greater than 7 mm. For example, the length L1 of the heat exchange monomer 14 can be 1 mm, 3 mm, 5 mm, 7 mm, etc. By setting the length of the heat exchange monomer 14 to be not greater than 7 mm, it is beneficial to improve the heat exchange capacity of the heat exchanger 10 and reduce the injection amount of the refrigerant. In addition, by setting the length of the heat exchange monomer 14 to be not greater than 7 mm, the width of the heat exchanger 10 along the third direction can be reduced, which is beneficial to the miniaturization of the heat exchanger 10.

[0085] Reference Figure 7 According to some embodiments of the present invention, the thickness L2 of the heat exchange monomer 14 is not greater than 0.8 mm. For example, the thickness L2 of the heat exchange monomer 14 may be 0.2 mm, 0.4 mm, 0.6 mm, 0.8 mm, etc. The thickness of the heat exchange monomer 14 is relatively thin. Compared with the heat exchange monomer 14 with a larger thickness, when the airflow passes through the heat exchange monomer 14, the boundary layer formed between the airflow and the surface of the heat exchange monomer 14 is relatively thin, the convective heat transfer process is more intense, and the heat transfer effect is more obvious, thereby improving the heat transfer capacity of the heat exchange monomer 14, and further improving the heat transfer capacity of the heat exchanger 10 having the heat exchange monomer 14.

[0086] In addition, when the heat exchange monomer 14 of this embodiment is applied to the heat exchanger 10, when the length of the heat exchanger 10 along the first direction is constant, the thickness L2 of the heat exchange monomer 14 is set to be no more than 0.8 mm, which can further increase the gap between two adjacent heat exchange monomers 14 along the second direction, thereby further reducing the wind resistance caused by the airflow passing through the outer surface of the heat exchange monomer 14 and the heat exchange monomer 14 when exchanging heat, thereby reducing the pressure drop caused by the airflow passing through the heat exchanger 10; and the thickness L2 of the heat exchange monomer 14 is relatively small, which is conducive to reducing the length of the heat exchanger 10 along the second direction, thereby facilitating the miniaturization of the heat exchanger 10.

[0087] Reference Figure 7 According to some embodiments of the present invention, the length L3 of the heat exchange channel 141 along the third direction is not greater than 0.6 mm. For example, the length L3 of the heat exchange channel 141 may be 0.1 mm, 0.2 mm, 0.4 mm, 0.6 mm, etc. Setting the length of the heat exchange channel 141 to be not greater than 0.6 mm facilitates the integral molding of the heat exchange channel 141 and the heat exchange monomer 14, which can improve production efficiency. Furthermore, limiting the length of the heat exchange channel 141 within the length range can limit the length range of the heat exchange monomer 14 in the flow direction of the airflow, which facilitates the design of the arrangement of the heat exchange monomer 14 in the heat exchanger 10, and is conducive to improving the heat exchange capacity of the heat exchanger 10 having the heat exchange monomer 14.

[0088] Reference Figure 7According to some embodiments of the present invention, the heat exchange unit 14 has a plurality of heat exchange channels 141 arranged at intervals along the third direction, and the spacing L4 between adjacent heat exchange channels 141 ranges from 0.2 to 0.4 mm. For example, the spacing L4 between adjacent heat exchange channels 141 may be 0.22 mm, 0.28 mm, 0.32 mm, 0.36 mm, etc. When the extension length of the heat exchange unit 14 along the flow direction of the airflow is constant and the heat exchange unit 14 has a plurality of heat exchange channels 141 arranged at intervals along the flow direction of the airflow, the spacing between adjacent heat exchange channels 141 is limited to 0.2 to 0.4 mm, so that the structural strength of the heat exchange unit 14 can be ensured.

[0089] Reference Figure 7 According to some embodiments of the present invention, the dimension L5 of the heat exchange channel 141 in the thickness direction of the heat exchange monomer 14 ranges from 0.1 to 0.4 mm. For example, the dimension L5 of the heat exchange channel 141 in the thickness direction may be 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, etc. Within this dimension range, the diameter of the heat exchange channel 141 is relatively small. Compared with the existing heat exchange channel 141 with a larger diameter, this setting can reduce the injection amount of the refrigerant and reduce the cost of the heat exchanger 10. In addition, the heat exchange channel 141 has a relatively small dimension in the thickness direction of the heat exchange monomer 14, which is conducive to reducing the thickness of the heat exchange monomer 14 and increasing the length between two adjacent heat exchange monomers 14 along the second direction, thereby increasing the heat exchange efficiency of the heat exchanger 10, reducing the wind resistance generated when the airflow flows through the outer surface of the heat exchange monomer 14 and the heat exchange monomer 14 and the pressure drop generated when the airflow flows through the heat exchanger 10.

[0090] The dimension L5 of the heat exchange channel 141 in the thickness direction of the heat exchange unit 14 is in the range of 0.1 to 0.4 mm, and accordingly, the dimension L6 of the wall thickness of the heat exchange channel 141 in the thickness direction of the heat exchange unit 14 is in the range of 0.2 to 0.35 mm. For example, the dimension L5 of the thickness direction of the heat exchange channel 141 may be 0.2 mm, 0.25 mm, 0.3 mm, 0.34 mm, etc. Within this dimension range, the pressure resistance and corrosion resistance of the heat exchange unit 14 can be guaranteed, and the service life of the heat exchange unit 14 can be extended.

[0091] Refer to the following Figure 1-Figure 8 , describing a heat exchanger 10 according to some embodiments of the present invention.

[0092] The heat exchanger 10 includes a plurality of heat exchange units 11, which are arranged in sequence along a first direction, and two adjacent heat exchange units 11 are connected. Each heat exchange unit 11 is independently formed, and each heat exchange unit 11 includes a first header 12, a second header 13 and a heat exchange monomer 14, and all heat exchange units 11 are the same.

[0093] The first manifold 12 and the second manifold 13 are arranged opposite to each other and spaced apart along the second direction, the second direction intersects with the first direction, the first manifold 12 has a first manifold cavity 121, the second manifold 13 has a second manifold cavity 131, the heat exchange monomer 14 has a heat exchange channel 141, the heat exchange monomer 14 is connected between the first manifold 12 and the second manifold 13, and the heat exchange channel 141 communicates the corresponding first manifold cavity 121 and the second manifold cavity 131. The second direction is the up and down direction.

[0094] The first collecting pipe 12 is provided with a first plug hole 122 communicating with the first collecting cavity 121 , the second collecting pipe 13 is provided with a second plug hole 132 communicating with the second collecting cavity 131 , one end of the heat exchange unit 14 is inserted into the first plug hole 122 , and the other end of the heat exchange unit 14 is inserted into the second plug hole 132 .

[0095] The first header 12 has a first mating surface 123, and the first mating surfaces 123 of two adjacent first headers 12 are opposite and connected along a first direction. The first header 12 has a second mating surface 133, and the second mating surfaces 133 of two adjacent second headers 13 are opposite and connected along the first direction. The two adjacent first mating surfaces 123 and the second mating surfaces 133 are planes and are connected by welding.

[0096] The first mating surface 123 surrounds the outer circumference of the first manifold 121 , and the second mating surface 133 surrounds the outer circumference of the second manifold 131 . The cross-sections of the first manifold 12 and the second manifold 13 are both rectangular.

[0097] An air flow channel 15 extending along the third direction is defined between two adjacent heat exchange monomers 14. The heat exchange monomer 14 is in a flat plate shape, and the surface of the heat exchange monomer 14 in the thickness direction faces the air flow channel 15. The heat exchange monomer 14 has 8 heat exchange channels 141 arranged at intervals along the third direction.

[0098] According to the heat exchanger 10 of the embodiment of the present invention, the heat exchanger 10 includes a plurality of heat exchange units 11 arranged in sequence and each heat exchange unit 11 is independently molded. A corresponding number of heat exchange units 11 can be selected according to the size of the heat exchanger 10 for assembly to form a heat exchanger 10 of a corresponding size. The heat exchanger 10 can be modularly manufactured according to the size required by different systems, thereby saving mold opening costs and mold opening time, thereby reducing production costs and improving production efficiency.

[0099] Reference Fig. 9 The air conditioning system 100 according to the second embodiment of the present invention comprises: a heat exchanger 10 according to the first embodiment of the present invention.

[0100] like Fig. 9As shown, the air conditioning system 100 may further include a compressor 30, an outdoor heat exchanger 20, a throttling component 23 and an indoor heat exchanger 21. For example, the outdoor heat exchanger 20 may be the heat exchanger 10 of the first embodiment described above. The compressor 30 and the outdoor heat exchanger 20 are usually located in the outdoor unit of the air conditioner. The outdoor unit of the air conditioner may further include an outdoor fan. The outdoor fan may blow outdoor air into the air flow channel 15, which helps the refrigerant circulating in the heat exchange unit 14 to exchange heat with the air. The outdoor heat exchanger 20 has a first inlet and outlet 201 and a second inlet and outlet 202 for the refrigerant to enter and exit. The indoor heat exchanger 21 is located in the indoor unit of the air conditioner. The indoor unit of the air conditioner may further include an indoor fan 22. The indoor fan 22 may drive the indoor air to exchange heat with the indoor heat exchanger 21 to change the indoor temperature. The throttling component 23 (such as an electronic expansion valve) may be connected between the indoor heat exchanger 21 and the outdoor heat exchanger 20. The throttling component 23 is located in the indoor unit of the air conditioner or the outdoor unit of the air conditioner.

[0101] For example, refer to Fig. 9 The compressor 30 has an exhaust port 31 and an air return port 32. The exhaust port 31 and the air return port 32 of the compressor 30 are both provided with a first sensor 24 and a second sensor 25. For example, the first sensor 24 may be a temperature sensor, and the second sensor 25 may be a pressure sensor. An oil separator 26 and a first control valve 28 are connected between the exhaust port 31 of the compressor 30 and the outdoor heat exchanger 20. The oil separator 26 can filter the oil in the compressor 30 mixed with the refrigerant, and the filtered oil can enter the compressor 30 for recycling. A gas-liquid separator 27 is connected between the first control valve 28 and the air return port 32 of the compressor 30. The gas-liquid separator 27 can reduce the content of the liquid refrigerant sucked into the air return port 32 of the compressor 30 to avoid liquid hammer in the compressor 30. A second control valve 29 is connected between the indoor heat exchanger 21 and the throttling component 23, and between the indoor heat exchanger 21 and the first control valve 28. The first control valve 28 may be a four-way valve having a first port D, a second port C, a third port E and a fourth port S.

[0102] When the air-conditioning system 100 includes the above-mentioned compressor 30, outdoor heat exchanger 20, throttling component 23 and indoor heat exchanger 21, the cooling process of the air-conditioning system 100 is as follows: the first interface D and the second interface C are connected, the third interface E and the fourth interface S are connected, the second control valve 29 is turned on, and the refrigerant compressed by the compressor 30 is discharged through the exhaust port 31, passes through the oil separator and the first interface D and the second interface C of the first control valve 28, and enters the outdoor heat exchanger 20 through the first inlet and outlet 201, and performs heat exchange with the air in the air flow channel 15 in the outdoor heat exchanger 20; the refrigerant after heat exchange flows out of the outdoor heat exchanger 20 through the second inlet and outlet 202, and enters the indoor heat exchanger 21 through the throttling component 23, and performs heat exchange with the indoor air to cool the indoor temperature; then, the refrigerant flows out of the indoor heat exchanger 21, passes through the third interface E and the fourth interface S, and flows into the gas-liquid separator 27, and finally enters the compressor 30 through the return air port 32 of the compressor 30.

[0103] When the air conditioning system 100 includes the above-mentioned compressor 30, outdoor heat exchanger 20, throttling component 23 and indoor heat exchanger 21, the heating process of the air conditioning system 100 is as follows: when the air conditioning system 100 is heating, the second control valve 29 is connected, the first interface D and the third interface E of the first control valve 28 are connected, the second interface C and the fourth interface S are connected, and the refrigerant compressed by the compressor 30 is discharged through the exhaust port 31, passes through the oil separator and the first interface D and the third interface E of the first control valve 28, and enters the indoor heat exchanger 21, and heat is exchanged indoors. The refrigerant exchanges heat with the indoor air in the heat exchanger 21 to increase the indoor temperature; after the heat exchange, the refrigerant flows out of the indoor heat exchanger 21, passes through the throttling component 23, and enters the outdoor heat exchanger 20 from the second inlet 202, and exchanges heat with the air in the air flow channel 15 in the outdoor heat exchanger 20; the refrigerant after the heat exchange flows out of the outdoor heat exchanger 20 through the first inlet 201, and the refrigerant flowing out of the outdoor heat exchanger 20 flows into the gas-liquid separator 27 after passing through the second interface C and the fourth interface S, and finally enters the compressor 30 through the return air port 32 of the compressor 30.

[0104] According to the air conditioning system 100 of the embodiment of the present invention, by setting the above-mentioned heat exchanger 10, the heat exchanger 10 includes a plurality of heat exchange units 11 arranged in sequence and each heat exchange unit 11 is independently molded. A corresponding number of heat exchange units 11 can be selected according to the size of the heat exchanger 10 for assembly to form a heat exchanger 10 of a corresponding size. The heat exchanger 10 can be modularly manufactured according to the size required by different systems, thereby saving mold opening costs and mold opening time, thereby reducing production costs and improving production efficiency.

[0105] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0106] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A heat exchanger, characterized in that: include: A plurality of heat exchange units are arranged in sequence along a first direction, two adjacent heat exchange units are connected, each of the heat exchange units is independently formed, each of the heat exchange units comprises a first collecting tube, a second collecting tube and at least one heat exchange monomer, the first collecting tube and the second collecting tube are arranged opposite to each other and spaced apart along a second direction, the second direction intersects with the first direction, the first collecting tube has a first collecting cavity, the second collecting tube has a second collecting cavity, the heat exchange monomer has a heat exchange channel, the heat exchange monomer is connected between the first collecting tube and the second collecting tube, and the heat exchange channel connects the corresponding first collecting cavity and the second collecting cavity.

2. The heat exchanger according to claim 1, characterized in that: Two adjacent heat exchange units are connected by welding or in a detachable manner.

3. The heat exchanger according to claim 1, characterized in that: At least part of the heat exchange units include 1 to 5 heat exchange monomers.

4. The heat exchanger according to claim 1, characterized in that: When a single heat exchange unit includes a plurality of the heat exchange monomers, the plurality of heat exchange monomers of the single heat exchange unit are arranged at intervals along the first direction.

5. The heat exchanger according to claim 1, characterized in that: At least some of the heat exchange units are identical.

6. The heat exchanger according to claim 1, characterized in that The first collecting pipe has a first plug hole connected to the first collecting cavity, the second collecting pipe has a second plug hole connected to the second collecting cavity, one end of the heat exchange unit is inserted into the first plug hole, and the other end of the heat exchange unit is inserted into the second plug hole.

7. The heat exchanger according to claim 1, characterized in that The second direction is a vertical direction, and the heat exchange unit extends along the second direction.

8. The heat exchanger according to any one of claims 1 to 7, characterized in that: The first headers of the plurality of heat exchange units are arranged in sequence along the first direction, and two adjacent first headers are connected; the second headers of the plurality of heat exchange units are arranged in sequence along the first direction, and two adjacent second headers are connected.

9. The heat exchanger according to claim 8, characterized in that The first current collector has a first mating surface, and the first mating surfaces of two adjacent first current collectors are opposite and connected along the first direction; and / or the second current collector has a second mating surface, and the second mating surfaces of two adjacent second current collectors are opposite and connected along the first direction.

10. The heat exchanger according to claim 9, characterized in that The first mating surfaces of two adjacent first current collectors are connected by welding; and / or the second mating surfaces of two adjacent second current collectors are connected by welding.

11. The heat exchanger according to claim 9, characterized in that The first mating surface is formed as a plane; and / or the second mating surface is formed as a plane.

12. The heat exchanger according to claim 9, characterized in that The first mating surface surrounds the outer circumference of the first manifold; and / or the second mating surface surrounds the outer circumference of the second manifold.

13. The heat exchanger according to claim 9, characterized in that The cross section of the first current collecting pipe is rectangular; and / or the cross section of the second current collecting pipe is rectangular.

14. The heat exchanger according to claim 9, characterized in that The first manifolds of at least some adjacent two first manifolds are connected.

15. The heat exchanger according to claim 8, characterized in that An air flow channel extending along a third direction is defined between two adjacent heat exchange units along the first direction, and the third direction, the first direction and the second direction intersect each other. The heat exchange unit is in the shape of a flat plate, and the surface of the heat exchange unit in the thickness direction faces the air flow channel; the heat exchange unit has a plurality of heat exchange channels arranged at intervals along the third direction.

16. An air conditioning system, characterized in that: include: A heat exchanger according to any one of claims 1 to 15.

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