Fin type heat exchanger

Abstract

The embodiment of the utility model provides a fin type heat exchanger, and relates to the technical field of air conditioners. The fin type heat exchanger comprises a distributor, a first heat exchange pipe set and a supercooling pipe set, the first heat exchange pipe set comprises a first main pipe flow path, a first branch pipe flow path and a second branch pipe flow path, one end of the first main pipe flow path communicates with the distributor, and the other end of the first main pipe flow path communicates with the first branch pipe flow path and the second branch pipe flow path at the same time; a mounting space is formed among the first main pipe flow path, the first branch pipe flow path and the second branch pipe flow path; the supercooling pipe set communicates with the distributor and is located in the installation space. The fin type heat exchanger can reduce pressure drop of a flow path of the heat exchanger, improves performance of a unit, is compact in structure and can save space.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and more specifically, to a finned heat exchanger. Background Technology

[0002] A finned heat exchanger is a device that increases heat exchange efficiency by increasing the heat exchange area. It mainly consists of components such as heat exchange tube assemblies, distributors, and subcooling tube assemblies. When the finned heat exchanger functions as an evaporator, the refrigerant passes sequentially through the subcooling tube assemblies, distributor, and heat exchange tube assemblies, thereby achieving the refrigeration function.

[0003] However, traditional finned heat exchangers have design limitations. The flow path within their heat exchange tube bundles is relatively simple, resulting in high local resistance. This leads to an increase in the overall pressure drop of the finned heat exchanger, ultimately affecting the unit's performance and causing it to perform poorly. Utility Model Content

[0004] The purpose of this invention is to provide a finned heat exchanger that can reduce the pressure drop in the heat exchanger flow path and improve the performance of the unit.

[0005] The embodiments of this utility model are implemented as follows:

[0006] An embodiment of this utility model provides a finned heat exchanger, comprising:

[0007] Distributor;

[0008] A first heat exchange tube assembly includes a first main flow path, a first branch flow path, and a second branch flow path. One end of the first main flow path is connected to the distributor, and the other end is connected to both the first branch flow path and the second branch flow path. An installation space is formed between the first main flow path, the first branch flow path, and the second branch flow path.

[0009] The subcooled pipe assembly is connected to the distributor and is located within the installation space.

[0010] In an optional embodiment, the first branch pipe flow path and the second branch pipe flow path are spaced apart along a first direction, the first main pipe flow path and the subcooled pipe group are spaced apart along the first direction, and the subcooled pipe group and the second branch pipe flow path are spaced apart along a second direction.

[0011] The first main flow path and the subcooled pipe group are located on the same side of the first branch flow path and the second branch flow path, and the first main flow path and the first branch flow path are arranged correspondingly, and the subcooled pipe group is arranged correspondingly to the second branch flow path;

[0012] Wherein, the first direction and the second direction form an angle.

[0013] In an optional embodiment, the first main flow path includes a plurality of first heat exchange tubes connected in sequence, the plurality of first heat exchange tubes being arranged sequentially along the first direction; and / or,

[0014] The first branch flow path includes a plurality of second heat exchange tubes connected in sequence, the plurality of second heat exchange tubes being arranged sequentially along the first direction; and / or,

[0015] The second branch pipe flow path includes a plurality of third heat exchange tubes connected in sequence, and the plurality of third heat exchange tubes are arranged in sequence along the first direction.

[0016] In an optional embodiment, the subcooling pipe assembly includes a first manifold, a first subcooling flow path, a second subcooling flow path, and a second manifold. The first manifold is connected to the distributor. One end of the first subcooling flow path and one end of the second subcooling flow path are both connected to the first manifold, and the other end of the first subcooling flow path and the second subcooling flow path are both connected to the second manifold.

[0017] At least a portion of both the first subcooling flow path and the second subcooling flow path are located within the installation space.

[0018] In an optional embodiment, the first main flow path, the first subcooled flow path, and the second subcooled flow path are arranged sequentially at intervals and are all located on the same side of the first branch flow path and the second branch flow path; the first subcooled flow path and the second subcooled flow path are arranged correspondingly to the second branch flow path, and the first main flow path is arranged correspondingly to the first branch flow path.

[0019] In an optional embodiment, the first subcooling flow path includes a plurality of first subcooling pipes connected in sequence, and the second subcooling flow path includes a plurality of second subcooling pipes connected in sequence, wherein the plurality of first subcooling pipes and the plurality of second subcooling pipes are arranged in sequence.

[0020] In an optional embodiment, the finned heat exchanger further includes a first capillary tube, the two ends of which are respectively connected to the distributor and the first main flow path.

[0021] In an optional embodiment, the finned heat exchanger further includes at least one second heat exchange tube group, the at least one second heat exchange tube group being located on the side of the first heat exchange tube group away from the subcooled tube group, and the at least one second heat exchange tube group being in communication with the distributor.

[0022] In an optional embodiment, the second heat exchange tube assembly includes a second main flow path, a third branch flow path, and a fourth branch flow path. One end of the second main flow path is connected to the distributor, and the other end is connected to both the third and fourth branch flow paths.

[0023] In an optional embodiment, the finned heat exchanger further includes a second capillary tube, the two ends of which are respectively connected to the distributor and the second main flow path.

[0024] The beneficial effects of this utility model embodiment include:

[0025] The finned heat exchanger includes a distributor, a first heat exchange tube group, and a subcooling tube group. The first heat exchange tube group includes a first main flow path, a first branch flow path, and a second branch flow path. One end of the first main flow path is connected to the distributor, and the other end is connected to both the first branch flow path and the second branch flow path. An installation space is formed between the first main flow path, the first branch flow path, and the second branch flow path. The subcooling tube group is connected to the distributor and is located within the installation space.

[0026] When the finned heat exchanger is used as an evaporator, the refrigerant passes sequentially through the subcooling pipe assembly and distributor before reaching the first main flow path. The refrigerant in the first main flow path is then split in two: one part flows into the first branch flow path, and the other into the second branch flow path. This reduces local resistance during refrigerant flow, resulting in an overall lower pressure drop across the heat exchanger flow paths and thus improving unit performance. Simultaneously, the arrangement of the first main flow path, the first branch flow path, and the second branch flow path creates an installation space, within which the subcooling pipe assembly is housed. This saves internal space within the heat exchanger, resulting in a compact structural layout and a reduced overall size of the finned heat exchanger. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of the structure of the finned heat exchanger provided in this embodiment of the utility model;

[0029] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0030] Figure 3A schematic diagram of the finned heat exchanger as an evaporator provided in an embodiment of this utility model;

[0031] Figure 4 A schematic diagram of the finned heat exchanger as a condenser provided in an embodiment of this utility model;

[0032] Figure 5 for Figure 1 A magnified view of a section at point B in the middle.

[0033] Icons: 100 - Finned heat exchanger; 10 - Distributor; 20 - First heat exchange tube assembly; 21 - First main flow path; 211 - First heat exchange tube; 22 - First branch flow path; 221 - Second heat exchange tube; 23 - Second branch flow path; 231 - Third heat exchange tube; 30 - Installation space; 40 - Subcooling tube assembly; 41 - First manifold; 42 - First subcooling flow path; 421 - First subcooling tube; 43 - Second subcooling flow path; 431 - Second subcooling tube; 44 - Second manifold; 50 - First capillary tube; 60 - Second heat exchange tube assembly; 61 - Second main flow path; 611 - Fourth heat exchange tube; 62 - Third branch flow path; 621 - Fifth heat exchange tube; 63 - Fourth branch flow path; 631 - Sixth heat exchange tube; 70 - Second capillary tube. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] As described in the background section, traditional finned heat exchangers have design limitations. The flow path within their heat exchange tube bundles is relatively simple, resulting in high local resistance. This leads to an increase in the overall pressure drop of the finned heat exchanger, ultimately affecting the unit's performance and causing it to perform poorly.

[0041] Based on this, please refer to Figures 1-5 The present invention provides a finned heat exchanger 100, which can effectively improve the aforementioned technical problems, namely, it can reduce the pressure drop in the heat exchanger flow path and improve the performance of the unit. The finned heat exchanger 100 will be described in detail below.

[0042] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of the finned heat exchanger 100 provided in this embodiment. Figure 2 for Figure 1 A magnified view of a section at point A, combined with Figure 1 and Figure 2The finned heat exchanger 100 includes a distributor 10, a first heat exchange tube assembly 20, and a subcooling tube assembly 40. The first heat exchange tube assembly 20 includes a first main flow path 21, a first branch flow path 22, and a second branch flow path 23. One end of the first main flow path 21 is connected to the distributor 10, and the other end is connected to both the first branch flow path 22 and the second branch flow path 23. An installation space 30 is formed between the first main flow path 21, the first branch flow path 22, and the second branch flow path 23. The subcooling tube assembly 40 is connected to the distributor 10 and is located within the installation space 30.

[0043] Please refer to Figure 3 , Figure 3 This embodiment provides a schematic diagram of the finned heat exchanger 100 as an evaporator, in conjunction with... Figures 1-3 When the finned heat exchanger 100 functions as an evaporator, the refrigerant sequentially passes through the subcooling pipe assembly 40 and the distributor 10, then reaches the first main flow path 21. The refrigerant in the first main flow path 21 is then divided into two parts: one flows to the first branch flow path 22, and the other flows to the second branch flow path 23. This reduces local resistance during refrigerant flow, lowers the overall pressure drop across the heat exchanger flow paths, and improves unit performance. Simultaneously, the arrangement of the first main flow path 21, the first branch flow path 22, and the second branch flow path 23 forms an installation space 30, within which the subcooling pipe assembly 40 is housed. This saves internal space in the heat exchanger, resulting in a compact layout and reducing the overall volume of the finned heat exchanger 100.

[0044] Please continue to combine Figure 1 and Figure 2 The first branch pipe flow path 22 and the second branch pipe flow path 23 are spaced apart along a first direction. The first main pipe flow path 21 and the subcooling pipe assembly 40 are spaced apart along the first direction. The subcooling pipe assembly 40 and the second branch pipe flow path 23 are spaced apart along a second direction. The first main pipe flow path 21 and the subcooling pipe assembly 40 are located on the same side of the first branch pipe flow path 22 and the second branch pipe flow path 23, and the first main pipe flow path 21 and the first branch pipe flow path 22 are arranged correspondingly, and the subcooling pipe assembly 40 and the second branch pipe flow path 23 are arranged correspondingly. The first direction and the second direction form an angle.

[0045] It should be noted that the first direction mentioned above refers to... Figure 1 The X direction is shown in the figure, and the second direction is... Figure 1 The Y direction is shown in the figure. Specifically, in this embodiment, the first direction is perpendicular to the second direction, that is, the angle between the two is 90°; of course, in other embodiments, the angle between the first direction and the second direction can also be an acute angle or an obtuse angle.

[0046] like Figure 2As shown, the arrangement of the first main flow path 21, the first branch flow path 22, the second branch flow path 23 and the subcooling tube group 40 makes the installation position of each structure more compact, makes full use of the space inside the heat exchanger, further reduces the overall volume of the finned heat exchanger 100, and thus reduces the production cost.

[0047] Specifically, in this embodiment, the first main flow path 21 includes a plurality of first heat exchange tubes 211 connected in sequence. The plurality of first heat exchange tubes 211 are arranged in sequence along the first direction, making the arrangement of the plurality of first heat exchange tubes 211 compact, which can reduce the overall size of the heat exchanger in the second direction, thereby saving internal space of the heat exchanger. In addition, since the refrigerant, after passing through the distributor 10, first enters the plurality of first heat exchange tubes 211 in sequence, and then splits into two to enter the first branch flow path 22 and the second branch flow path 23 respectively, the flow path of the refrigerant in the first heat exchange tube group 20 can be extended, thereby improving the heat exchange and cooling effect.

[0048] Optionally, the first branch pipe flow path 22 includes a plurality of second heat exchange tubes 221 connected in sequence, and the plurality of second heat exchange tubes 221 are arranged sequentially along the first direction. In this embodiment, the plurality of second heat exchange tubes 221 and the plurality of first heat exchange tubes 211 are arranged sequentially in the first direction, and the two are correspondingly arranged in the second direction, thereby reducing the overall size of the heat exchanger in the second direction and saving internal space of the heat exchanger.

[0049] Optionally, the second branch flow path 23 includes a plurality of third heat exchange tubes 231 connected in sequence, and the plurality of third heat exchange tubes 231 are arranged sequentially along the first direction. In this embodiment, the plurality of third heat exchange tubes 231, the plurality of second heat exchange tubes 221 and the plurality of first heat exchange tubes 211 are all arranged sequentially in the first direction, and the plurality of third heat exchange tubes 231 and the plurality of second heat exchange tubes 221 are spaced apart in the first direction, thereby reducing the overall size of the heat exchanger in the second direction and saving internal space of the heat exchanger.

[0050] It should be noted that in this embodiment, the plurality of second heat exchange tubes 221 are arranged in two groups. The plurality of second heat exchange tubes 221 in the first group, the plurality of second heat exchange tubes 221 in the second group, and the plurality of first heat exchange tubes 211 are arranged sequentially along the second direction, which makes the internal space layout of the heat exchanger more compact, saves space, and reduces the overall volume of the finned heat exchanger 100. Similarly, the plurality of third heat exchange tubes 231 are also arranged in two groups. The plurality of third heat exchange tubes 231 in the first group, the plurality of third heat exchange tubes 231 in the second group, and the subcooling tube group 40 are arranged sequentially along the second direction, which also makes the internal space layout of the heat exchanger more compact, thereby saving space and reducing the overall volume of the finned heat exchanger 100.

[0051] Please continue to combine Figure 2 Specifically, the subcooling pipe assembly 40 includes a first manifold 41, a first subcooling flow path 42, a second subcooling flow path 43, and a second manifold 44. The first manifold 41 is connected to the distributor 10. One end of the first subcooling flow path 42 and the second subcooling flow path 43 are both connected to the first manifold 41, and the other end of the first subcooling flow path 42 and the second subcooling flow path 43 are both connected to the second manifold 44. At least a portion of the first subcooling flow path 42 and the second subcooling flow path 43 are located within the installation space 30.

[0052] Please refer to Figure 4 , Figure 4 This is a schematic diagram of the finned heat exchanger 100 provided in this embodiment as a condenser, combined with... Figure 2 and Figure 4 When the finned heat exchanger 100 is used as a condenser, the refrigerant passes sequentially through the first heat exchange tube group 20 and the distributor 10, and enters the first manifold 41. The refrigerant passing through the first manifold 41 is then divided into two parts: one part flows to the first subcooling path 42, and the other part flows to the second subcooling path 43, before converging into the second manifold 44. By also configuring the subcooling tube group 40 as a bisected flow path, secondary subcooling is facilitated, improving the cooling effect and reducing the pressure drop in the heat exchanger flow path, further enhancing the unit's performance. Furthermore, when the finned heat exchanger 100 is used as a condenser, the refrigerant passing through the distributor 10 before entering the corresponding flow path facilitates defrosting, and the larger refrigerant flow rate at the bottom of the finned heat exchanger 100 at this time accelerates defrosting.

[0053] Furthermore, in this embodiment, the first main flow path 21, the first subcooling flow path 42, and the second subcooling flow path 43 are arranged sequentially at intervals, and are all located on the same side of the first branch flow path 22 and the second branch flow path 23; the first subcooling flow path 42 and the second subcooling flow path 43 are arranged correspondingly to the second branch flow path 23, and the first main flow path 21 is arranged correspondingly to the first branch flow path 22. This also allows for a compact internal space layout of the heat exchanger, reducing the overall volume of the finned heat exchanger 100 and lowering production costs.

[0054] Please continue to combine Figure 2 Specifically, the first subcooling flow path 42 includes a plurality of first subcooling pipes 421 connected in sequence, and the second subcooling flow path 43 includes a plurality of second subcooling pipes 431 connected in sequence, with the plurality of first subcooling pipes 421 and the plurality of second subcooling pipes 431 arranged in sequence. In this embodiment, the plurality of first subcooling pipes 421 and the plurality of second subcooling pipes 431 are arranged in sequence along a first direction, which can further make the internal space layout of the heat exchanger compact, reduce the volume and lower the cost.

[0055] Combination Figure 1In order to better arrange the first heat exchange tube group 20 and facilitate the connection with the distributor 10, in this embodiment, the finned heat exchanger 100 also includes a first capillary tube 50, the two ends of which are connected to the distributor 10 and the first main flow path 21, respectively.

[0056] Furthermore, to improve the cooling effect, the finned heat exchanger 100 also includes at least one second heat exchange tube group 60. The at least one second heat exchange tube group 60 is located on the side of the first heat exchange tube group 20 away from the subcooled tube group 40, and the at least one second heat exchange tube group 60 is connected to the distributor 10. It is readily understood that in this embodiment, the second heat exchange tube group 60 and the first heat exchange tube group 20 are spaced apart along a first direction, which also saves internal space in the heat exchanger, making the layout of each component more compact.

[0057] It should be noted that in this embodiment, the number of the second heat exchange tube group 60 is six. Of course, in other embodiments, the number of the second heat exchange tube group 60 can also be one, two, or three, etc.

[0058] For details, please refer to Figure 5 , Figure 5 for Figure 1 A magnified view of a section at point B, combined with... Figure 1 and Figure 5 The second heat exchange tube group 60 includes a second main flow path 61, a third branch flow path 62 and a fourth branch flow path 63. One end of the second main flow path 61 is connected to the distributor 10, and the other end is connected to both the third branch flow path 62 and the fourth branch flow path 63.

[0059] In other words, the flow path in the second heat exchanger tube group 60 is also designed to be divided into two, which can reduce the flow resistance of the refrigerant in the second heat exchanger tube group 60, thereby reducing the overall pressure drop of the heat exchanger flow path and improving the performance of the unit.

[0060] Optionally, the second main flow path 61 includes a plurality of fourth heat exchange tubes 611 connected in sequence, the plurality of fourth heat exchange tubes 611 being arranged sequentially along a first direction. The third branch flow path 62 includes a plurality of fifth heat exchange tubes 621 connected in sequence, the plurality of fifth heat exchange tubes 621 being arranged sequentially along a first direction. The fourth branch flow path 63 includes a plurality of sixth heat exchange tubes 631 connected in sequence, the plurality of sixth heat exchange tubes 631 being arranged sequentially along a first direction.

[0061] It should be noted that in this embodiment, the plurality of fifth heat exchange tubes 621 are arranged in two groups. The plurality of fifth heat exchange tubes 621 in the first group, the plurality of fifth heat exchange tubes 621 in the second group, and the plurality of fourth heat exchange tubes 611 are arranged in sequence along the second direction. Similarly, the plurality of sixth heat exchange tubes 631 are also arranged in two groups. The plurality of sixth heat exchange tubes 631 in the first group, the plurality of sixth heat exchange tubes 631 in the second group, and the plurality of fourth heat exchange tubes 611 are arranged in sequence along the second direction. This makes the internal space layout of the heat exchanger more compact, saves space, and reduces the overall volume of the finned heat exchanger 100.

[0062] In addition, in order to better arrange the second heat exchange tube group 60 and facilitate its connection with the distributor 10, in this embodiment, the finned heat exchanger 100 also includes a second capillary tube 70, the two ends of which are connected to the distributor 10 and the second main flow path 61, respectively.

[0063] In summary, the embodiments of this utility model provide a finned heat exchanger 100, which includes a distributor 10, a first heat exchange tube group 20, and a subcooling tube group 40. The first heat exchange tube group 20 includes a first main flow path 21, a first branch flow path 22, and a second branch flow path 23. One end of the first main flow path 21 is connected to the distributor 10, and the other end is connected to both the first branch flow path 22 and the second branch flow path 23. An installation space 30 is formed between the first main flow path 21, the first branch flow path 22, and the second branch flow path 23. The subcooling tube group 40 is connected to the distributor 10 and is located within the installation space 30.

[0064] As is easily understood, when the finned heat exchanger 100 functions as an evaporator, the refrigerant sequentially passes through the subcooling pipe assembly 40 and the distributor 10, then reaches the first main flow path 21. The refrigerant passing through the first main flow path 21 is then divided into two parts: one part flows to the first branch flow path 22, and the other part flows to the second branch flow path 23. This reduces local resistance during refrigerant flow, lowers the overall pressure drop across the heat exchanger flow paths, and thus improves unit performance. Simultaneously, the arrangement of the first main flow path 21, the first branch flow path 22, and the second branch flow path 23 forms an installation space 30, within which the subcooling pipe assembly 40 is housed. This saves internal space in the heat exchanger, resulting in a compact structural layout and reducing the overall volume of the finned heat exchanger 100.

[0065] The above description is merely a specific embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A finned heat exchanger, characterized in that, include: Distributor (10); A first heat exchange tube assembly (20) includes a first main flow path (21), a first branch flow path (22), and a second branch flow path (23). One end of the first main flow path (21) is connected to the distributor (10), and the other end is connected to both the first branch flow path (22) and the second branch flow path (23). An installation space (30) is formed between the first main flow path (21), the first branch flow path (22), and the second branch flow path (23). The subcooling pipe assembly (40) is connected to the distributor (10) and is located within the installation space (30).

2. The finned heat exchanger according to claim 1, characterized in that, The first branch pipe flow path (22) and the second branch pipe flow path (23) are spaced apart along a first direction, the first main flow path (21) and the subcooled pipe group (40) are spaced apart along the first direction, and the subcooled pipe group (40) and the second branch pipe flow path (23) are spaced apart along a second direction. The first main flow path (21) and the subcooled pipe group (40) are located on the same side of the first branch flow path (22) and the second branch flow path (23), and the first main flow path (21) and the first branch flow path (22) are arranged correspondingly, and the subcooled pipe group (40) and the second branch flow path (23) are arranged correspondingly. Wherein, the first direction and the second direction form an angle.

3. The finned heat exchanger according to claim 2, characterized in that, The first main flow path (21) includes a plurality of first heat exchange tubes (211) connected in sequence, the plurality of first heat exchange tubes (211) being arranged sequentially along the first direction; and / or, The first branch flow path (22) includes a plurality of second heat exchange tubes (221) connected in sequence, the plurality of second heat exchange tubes (221) being arranged in sequence along the first direction; and / or, The second branch flow path (23) includes a plurality of third heat exchange tubes (231) connected in sequence, and the plurality of third heat exchange tubes (231) are arranged in sequence along the first direction.

4. The finned heat exchanger according to claim 1, characterized in that, The subcooling pipe assembly (40) includes a first manifold (41), a first subcooling flow path (42), a second subcooling flow path (43), and a second manifold (44). The first manifold (41) is connected to the distributor (10). One end of the first subcooling flow path (42) and the second subcooling flow path (43) are both connected to the first manifold (41), and the other end of the first subcooling flow path (42) and the second subcooling flow path (43) are both connected to the second manifold (44). At least a portion of the first subcooling flow path (42) and the second subcooling flow path (43) are located within the installation space (30).

5. The finned heat exchanger according to claim 4, characterized in that, The first main flow path (21), the first subcooled flow path (42), and the second subcooled flow path (43) are arranged at intervals and are all located on the same side of the first branch flow path (22) and the second branch flow path (23); the first subcooled flow path (42) and the second subcooled flow path (43) are arranged correspondingly to the second branch flow path (23), and the first main flow path (21) is arranged correspondingly to the first branch flow path (22).

6. The finned heat exchanger according to claim 4, characterized in that, The first subcooling flow path (42) includes a plurality of first subcooling pipes (421) connected in sequence, and the second subcooling flow path (43) includes a plurality of second subcooling pipes (431) connected in sequence, wherein the plurality of first subcooling pipes (421) and the plurality of second subcooling pipes (431) are arranged in sequence.

7. The finned heat exchanger according to claim 1, characterized in that, The finned heat exchanger (100) further includes a first capillary tube (50), the two ends of which are connected to the distributor (10) and the first main flow path (21), respectively.

8. The finned heat exchanger according to claim 1, characterized in that, The finned heat exchanger (100) further includes at least one second heat exchange tube group (60), which is located on the side of the first heat exchange tube group (20) away from the subcooled tube group (40), and the at least one second heat exchange tube group (60) is in communication with the distributor (10).

9. The finned heat exchanger according to claim 8, characterized in that, The second heat exchange tube assembly (60) includes a second main flow path (61), a third branch flow path (62) and a fourth branch flow path (63). One end of the second main flow path (61) is connected to the distributor (10), and the other end is connected to both the third branch flow path (62) and the fourth branch flow path (63).

10. The finned heat exchanger according to claim 9, characterized in that, The finned heat exchanger (100) further includes a second capillary tube (70), the two ends of which are connected to the distributor (10) and the second main flow path (61), respectively.

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