Heat exchanger, outdoor unit and air conditioning system

Abstract

The utility model relates to the technical field of heat exchange, and provides a heat exchanger, an outdoor unit and an air conditioning system. The heat exchanger comprises a heat exchanger body, a plurality of flow dividing assemblies and a flow collecting assembly. The heat exchanger body is provided with a plurality of heat exchange runners, and each heat exchange runner is provided with a fluid inlet and a fluid outlet; each flow dividing assembly comprises a plurality of flow dividing branch pipes, the pipe diameters of the flow dividing branch pipes of the flow dividing assemblies are the same, and the flow dividing branch pipes of the flow dividing assemblies are connected with the heat exchange runners in a one-to-one correspondence mode; the flow collecting assembly is connected with fluid outlets of the multiple heat exchange runners. According to the utility model, a plurality of shunting assemblies are adopted, and the corresponding shunting assemblies are arranged according to the change of a wind field, so that on one hand, the plurality of shunting assemblies can adapt to the change of the wind field to independently control the flow and ensure uniform heat exchange, and on the other hand, the pipe diameters of a plurality of shunting branch pipes of the same shunting assembly do not need to be distinguished according to the change of the wind field; the production cost and the production difficulty are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange, in particular to a heat exchanger, an outdoor unit and an air conditioning system. Background Art

[0002] At present, the outdoor unit heat exchanger of the multi-split air-conditioning system does face some challenges in the design of the liquid collection and diversion structure. In order to achieve the effect of uniform heat exchange, the traditional approach is to determine the length and specifications of the diameter of each diversion capillary of the diverter through experimental debugging. It is necessary to fine-tune the specifications of the capillary according to the changes in the wind field in different areas of the heat exchanger. In the lower part of the heat exchanger, due to the relatively low wind speed, in order to ensure uniform heat exchange, it is often necessary to set the diversion capillary to a slender shape, while in the upper part of the heat exchanger, due to the relatively high wind speed, in order to ensure uniform heat exchange, it is often necessary to set the diversion capillary to a thick and short shape.

[0003] However, this approach is not ideal when the space of the diversion structure is limited. The slender capillary not only takes up more layout space, but also may affect the compactness of the overall structure. In addition, since the diameter specifications of the capillary tubes are not uniform, a variety of pipes of different specifications need to be prepared during the production process, which undoubtedly increases the production cost and difficulty. Utility Model Content

[0004] The utility model provides a heat exchanger, an outdoor unit and an air-conditioning system, which are used to solve the problem in the prior art that in order to adapt to the changes in the wind field in different areas of the heat exchanger and ensure uniform heat exchange, the outdoor unit heat exchanger of the air-conditioning system sets the flow diversion capillary of the heat exchanger to a variety of pipes with different specifications, thereby increasing production costs and production difficulties.

[0005] The utility model provides a heat exchanger, comprising:

[0006] The heat exchanger body is provided with a plurality of heat exchange channels, each of which has a fluid inlet and a fluid outlet;

[0007] A plurality of flow splitter components, each of which comprises a plurality of flow splitter branches, the plurality of flow splitter branches of the plurality of flow splitter components have the same pipe diameter and are respectively connected to the plurality of heat exchange channels in a one-to-one correspondence;

[0008] The flow collecting components are respectively connected to the fluid outlets of the plurality of heat exchange channels.

[0009] According to a heat exchanger provided by the utility model, the multiple heat exchange channels are arranged in sequence along the vertical direction, the multiple diversion components are arranged in sequence along the vertical direction, and the multiple diversion branches of each diversion component are connected to multiple adjacent heat exchange channels in a one-to-one correspondence.

[0010] According to a heat exchanger provided by the utility model, the flow splitter assembly further includes:

[0011] Diversion Supervisor;

[0012] A flow divider, wherein the inlet of the flow divider is connected to the flow divider main pipe, and the multiple outlets of the flow divider are connected to the multiple flow divider branch pipes in a one-to-one correspondence.

[0013] According to a heat exchanger provided by the utility model, the heat exchange flow channel includes a plurality of heat exchange holes, and the plurality of heat exchange holes are connected end to end, wherein the head end of one of the heat exchange holes forms the fluid inlet, and the tail end of another heat exchange hole forms the fluid outlet.

[0014] According to a heat exchanger provided by the utility model, adjacent heat exchange holes are connected end to end via a connecting pipe, and the connecting pipe is a bent pipe structure.

[0015] According to a heat exchanger provided by the utility model, adjacent heat exchange holes are connected by a connecting pipe located outside the heat exchanger body.

[0016] According to a heat exchanger provided by the utility model, the end of the connecting pipe is detachably connected to the heat exchanger body.

[0017] According to a heat exchanger provided by the utility model, the current collecting assembly includes:

[0018] A plurality of collecting branch pipes connected to the plurality of heat exchange flow channels in a one-to-one correspondence;

[0019] At least one collecting main pipe is connected to a plurality of collecting branch pipes.

[0020] The utility model also provides an outdoor unit, comprising the heat exchanger as described above.

[0021] The utility model also provides an air conditioning system, comprising the heat exchanger as described above, or comprising the outdoor unit as described above.

[0022] The heat exchanger, outdoor unit and air-conditioning system provided by the utility model adopt the form of multiple diversion components, and corresponding diversion components are set according to changes in the wind field. On the one hand, multiple diversion components can adapt to changes in the wind field and independently control the flow to ensure uniform heat exchange. On the other hand, there is no need to distinguish the pipe diameters of multiple diversion branch pipes of the same diversion component according to changes in the wind field, thereby reducing production costs and production difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of a heat exchanger provided by the utility model;

[0025] Reference numerals:

[0026] 10. Heat exchanger body; 11. Heat exchange hole; 12. Connecting pipe;

[0027] 20. shunt assembly; 21. shunt branch pipe; 22. shunt main pipe; 23. shunt device;

[0028] 30. Current collecting assembly; 31. Current collecting branch pipe; 32. Current collecting main pipe. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0030] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0032] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 utility model embodiment. In this specification, the schematic representations of the above terms do 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. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0034] Combine the following Figure 1 The heat exchanger of the embodiment of the utility model is described, including a heat exchanger body 10, a plurality of flow diversion components 20 and a flow collection component 30. The heat exchanger body 10 is provided with a plurality of heat exchange channels, and the heat exchange channels have a fluid inlet and a fluid outlet; each flow diversion component 20 includes a plurality of flow diversion branches 21, and the plurality of flow diversion branches 21 of the plurality of flow diversion components 20 are respectively connected to the plurality of heat exchange channels in a one-to-one correspondence; the flow collection component 30 is respectively connected to the fluid outlets of the plurality of heat exchange channels; wherein the heat exchanger body 10 is divided into a plurality of cooling zones based on different wind fields, and each cooling zone is correspondingly provided with at least one flow diversion component 20.

[0035] This embodiment not only solves the limitations of the traditional single diversion structure in refrigerant diversion, but also achieves remarkable results in improving heat exchange efficiency, reducing production costs and simplifying production processes.

[0036] First, the utility model realizes supplying different flow rates of refrigerant to different shunt components 20 by introducing multiple shunt components 20. In the traditional single shunt structure, due to the changes in the wind field and the different characteristics of the upper and lower areas of the heat exchanger, it is often difficult to ensure the uniform distribution of the refrigerant in the heat exchanger, thereby affecting the heat exchange efficiency. The utility model divides the overall area of ​​the heat exchanger body 10 into multiple cooling zones based on the difference in wind fields. Taking the common case that the wind speed above the heat exchanger is higher than the wind speed below as an example, the overall area of ​​the heat exchanger can be divided into an upper cooling zone and a lower cooling zone according to the level of wind speed, or the overall area of ​​the heat exchanger can be divided into an upper cooling zone, a middle cooling zone and a lower cooling zone, etc. Each cooling zone is provided with at least one shunt component 20. The coordinated work of multiple shunt components 20 can adjust the refrigerant flow rate according to the wind field conditions of the cooling zone where the shunt component 20 is located, thereby ensuring that each part of the heat exchanger can be fully supplied with refrigerant and achieve uniform heat exchange.

[0037] Secondly, another significant advantage of the utility model is that since the shunt assembly 20 is responsible for the shunt of the corresponding cooling zone and does not need to shunt other areas, the multiple shunt branches 21 of the shunt assembly 20 do not need to be designed differently. In traditional shunt structures, in order to achieve uniform shunt of the refrigerant, capillaries of different diameters are often required, which not only increases the complexity of design and production, but also increases production costs. The utility model optimizes the design of the shunt assembly 20, so that even in different shunt assemblies 20, shunt branches 21 of the same diameter can be used, thereby greatly simplifying the production process and reducing production costs.

[0038] In addition, this design is also helpful to improve production efficiency. Due to the uniformity of the diameter of the branch pipe 21, the procurement, processing, installation and other links of the pipe in the production process will become simpler and more efficient, thereby improving production efficiency.

[0039] In summary, this embodiment achieves uniform refrigerant diversion by adopting multiple diversion components 20, improves heat exchange efficiency, and reduces production costs and production difficulties. This innovative design not only meets the market demand for efficient and energy-saving air-conditioning systems, but also opens up a new path for the development of the air-conditioning industry.

[0040] In one embodiment of the utility model, a plurality of heat exchange channels are arranged in sequence along the vertical direction, a plurality of diversion components 20 are arranged in sequence along the vertical direction, and a plurality of diversion branches 21 of each diversion component 20 are connected one-to-one with a plurality of heat exchange channels at corresponding heights.

[0041] First, multiple heat exchange channels are arranged in sequence in the vertical direction. This arrangement not only optimizes space utilization and makes the overall structure of the heat exchanger more compact, but also ensures smoother flow of fluid in the channel and improves heat exchange efficiency. The vertical arrangement also makes heat exchange more uniform, avoiding heat accumulation or insufficient cooling in certain areas.

[0042] Secondly, multiple flow distribution components 20 are also arranged in sequence in the vertical direction. The function of the flow distribution component 20 is to evenly distribute the fluid to each heat exchange channel to ensure that each channel can be fully supplied with fluid, thereby achieving efficient heat exchange. The vertically arranged flow distribution components 20 correspond to the heat exchange channels to form a compact and orderly fluid distribution system.

[0043] More importantly, the multiple branch pipes 21 of each flow splitter assembly 20 are connected to multiple adjacent heat exchange channels in a one-to-one correspondence. This connection method ensures that each heat exchange channel can obtain a uniform fluid supply from the flow splitter assembly 20, avoiding a decrease in heat exchange efficiency caused by uneven fluid distribution. At the same time, the one-to-one connection method also simplifies the fluid path and reduces the energy loss of the fluid during the flow process.

[0044] This vertical arrangement of heat exchange channels and diversion components 20, and the design of the one-to-one connected diversion branches 21 and heat exchange channels, not only optimizes the spatial layout and fluid distribution of the heat exchanger, but also improves the heat exchange efficiency, making the utility model have significant advantages and effects in practical applications.

[0045] In addition, under normal circumstances, the wind speed of the heat exchanger decreases gradually from top to bottom, and the vertical arrangement of the heat exchange flow channel and the diversion component 20 can better adapt to the changes in the wind field of the heat exchanger and make the layout more reasonable.

[0046] Optionally, the diameters of the multiple branch pipes 21 of the flow splitter assembly 20 are equal, thereby reducing the difficulty of producing each flow splitter assembly 20. Since each flow splitter assembly 20 only corresponds to a corresponding cooling zone, the multiple branch pipes 21 do not need to be designed differently, and the same diameter can meet the use requirements.

[0047] Furthermore, the diameters of the shunt branches 21 are equal between multiple shunt components 20. In a heat exchanger, due to differences in wind fields, the flow rates of different cooling zones need to be differentiated to ensure uniform heat exchange. In this embodiment, since each cooling zone is provided with at least one shunt component 20, it is only necessary to control the flow rates of the shunt components 20 (each shunt component is connected to an electronic expansion valve) to ensure that the flow rates at each position correspond to the wind field distribution, and there is no need to design the shunt branches 21 separately according to the different wind fields. The difficulty of production can be further reduced by unifying the diameters of the shunt branches 21 between multiple shunt components 20.

[0048] In one embodiment of the present invention, the flow splitter assembly 20 further includes a flow splitter main pipe 22 and a flow splitter 23 , the inlet of the flow splitter 23 is connected to the flow splitter main pipe 22 , and the multiple outlets of the flow splitter 23 are connected to the multiple flow splitter branches 21 in a one-to-one correspondence.

[0049] The diverter main pipe 22 undertakes the important task of guiding the fluid to the diverter 23. The inlet of the diverter 23 is closely connected to the diverter main pipe 22, ensuring that the fluid can flow seamlessly from the main pipe into the diverter 23. At the same time, the diverter 23 is provided with multiple outlets, which are connected to multiple diverter branches 21 one by one. When the fluid enters the diverter 23, it will pass through the internal distribution mechanism, be evenly distributed to each outlet, and then flow into the corresponding diverter branch 21. Through this design, the diverter assembly 20 can effectively distribute the fluid to each heat exchange channel, ensuring that each channel can obtain sufficient fluid supply. This not only helps to improve the overall heat exchange efficiency of the heat exchanger, but also avoids local overheating or overcooling caused by uneven fluid distribution, thereby extending the service life of the heat exchanger.

[0050] Optionally, the flow dividing main pipe 22 and the flow dividing device 23 and / or the flow dividing branch pipe 21 and the flow dividing device 23 are fixed by welding, for example, by brazing. This not only ensures the stability and reliability of the connection, but also helps to improve the overall performance and life of the heat exchanger. In addition, this connection method also simplifies the production process, improves production efficiency, and reduces production costs.

[0051] In one embodiment of the present invention, the heat exchange channel includes a plurality of heat exchange holes 11, which are connected end to end, wherein the head end of one heat exchange hole 11 forms a fluid inlet, and the tail end of another heat exchange hole 11 forms a fluid outlet.

[0052] Specifically, each heat exchange hole 11 has a certain length and diameter to adapt to specific fluid flow and heat exchange requirements. Multiple heat exchange holes 11 are connected end to end, so that the fluid can flow smoothly from one heat exchange hole 11 to the next heat exchange hole 11 to form a continuous fluid flow channel. This design ensures that the flow of the fluid inside the heat exchanger is more uniform and stable, and avoids undesirable phenomena such as vortexes and backflows that may occur during the flow of the fluid. The head end of one of the heat exchange holes 11 is designed as a fluid inlet, while the end of the other heat exchange hole 11 is used as a fluid outlet. This layout allows the fluid to enter the heat exchanger smoothly and flow out from the outlet after passing through a series of heat exchange holes 11. In the process of flowing through each heat exchange hole 11, the fluid will exchange heat with the wall of the heat exchanger, thereby realizing the transfer and transfer of heat.

[0053] In general, this heat exchange flow channel design including multiple heat exchange holes 11 connected end to end not only optimizes the flow path of the fluid, but also improves the heat exchange efficiency of the heat exchanger. At the same time, its structure is simple and compact, easy to manufacture and install, and reduces production costs and maintenance difficulties. Therefore, this design has wide applicability and promotion value in practical applications.

[0054] In one embodiment of the present invention, adjacent heat exchange holes 11 are connected by connecting pipes 12 located outside the heat exchanger body 10. This design not only optimizes the structural layout of the heat exchanger, but also improves the heat exchange efficiency.

[0055] Specifically, by arranging the connecting pipe 12 outside the heat exchanger body 10, the connection between the heat exchange holes 11 is made simpler and more direct. Compared with arranging a complex connection structure inside the heat exchanger, this design reduces the resistance of the fluid during the flow process, allowing the fluid to flow through each heat exchange hole 11 more smoothly.

[0056] At the same time, the outer connecting pipe 12 is also easy to install and maintain. During the manufacturing process, each heat exchange hole 11 can be processed first, and then connected through the connecting pipe 12 to form a complete heat exchange flow channel. This modular design reduces the complexity and difficulty of manufacturing and improves production efficiency. During maintenance, if a connecting pipe 12 has a problem, it can also be easily replaced or repaired without disassembling the entire heat exchanger.

[0057] In addition, the outer connecting pipe 12 also helps to improve the heat exchange efficiency of the heat exchanger. Since the connecting pipe 12 is located outside the heat exchanger body 10, the external space can be better utilized for heat dissipation or heat absorption, thereby enhancing the overall heat exchange performance of the heat exchanger.

[0058] In summary, by adopting the design of the outer connecting pipe 12, the utility model further optimizes the structural layout and heat exchange performance of the heat exchanger, making the heat exchanger more efficient and reliable in practical applications.

[0059] In one embodiment of the utility model, the connecting pipe 12 is a bent pipe structure. The connecting pipe 12 of the bent pipe structure can flexibly connect adjacent heat exchange holes 11, so that the layout of the heat exchange flow channel in the heat exchanger body 10 is more reasonable. This design can adapt to various complex installation environments and space limitations, and enhance the applicability and flexibility of the heat exchanger. In addition, the bent pipe structure also helps to reduce the resistance of the fluid during the flow process. Compared with a straight pipe, a bent pipe can change the flow direction of the fluid to a certain extent, so that the fluid can be more evenly distributed when flowing through the heat exchange hole 11, thereby improving the heat exchange efficiency.

[0060] At the same time, the connecting pipe 12 of the elbow structure can also play a role in buffering and shock absorption. During the flow of fluid, due to the changes in flow velocity and flow direction, certain impact forces and vibrations may be generated. The elbow structure can effectively absorb and disperse these impact forces and vibrations, and protect the stability and safety of the heat exchanger body 10.

[0061] In summary, by adopting the connecting pipe 12 with a bent pipe structure, the utility model further optimizes the structural design and performance of the heat exchanger, making it more efficient, reliable and stable in practical applications.

[0062] In one embodiment of the present invention, the end of the connecting pipe 12 is detachably connected to the heat exchanger body 10. This design brings many conveniences and advantages.

[0063] First, the detachable connection makes the installation and removal of the connecting pipe 12 simpler and more convenient. During the manufacturing or maintenance process, the staff can easily connect or separate the connecting pipe 12 from the heat exchanger body 10 without using complicated tools or techniques. This greatly saves installation and maintenance time and improves work efficiency.

[0064] Secondly, the detachable connection provides greater convenience for the maintenance and care of the heat exchanger. When the heat exchanger needs to be cleaned, inspected or parts replaced, the connecting pipe 12 can be easily removed so that each part inside the heat exchanger can be fully cleaned and inspected. This helps to ensure the normal operation of the heat exchanger and extend its service life.

[0065] In addition, the detachable connection also helps to improve the flexibility and scalability of the heat exchanger. When it is necessary to adjust the structure of the heat exchanger or increase the heat exchange area, it can be achieved by removing and reinstalling the connecting pipe 12. This design enables the heat exchanger to adapt to different working conditions and requirements, improving its applicability and reliability.

[0066] In summary, by connecting the end of the connecting pipe 12 and the heat exchanger body 10 in a detachable manner, the utility model not only simplifies the installation and maintenance process and improves work efficiency, but also facilitates the maintenance and care of the heat exchanger and enhances its flexibility and scalability.

[0067] In one embodiment of the present invention, the current collecting assembly 30 includes a plurality of current collecting branches 31 and at least one current collecting main pipe 32. The plurality of current collecting branches 31 are connected to the plurality of heat exchange channels in a one-to-one correspondence, and the current collecting main pipe 32 connects the plurality of current collecting branches 31. It should be noted that only one current collecting main pipe 32 may be provided, or a plurality of current collecting main pipes 32 may be provided. When a single current collecting main pipe 32 is provided, all the current collecting branches 31 may be connected to the current collecting main pipe 32. When a plurality of current collecting main pipes 32 are provided, the plurality of current collecting main pipes 32 may be connected to the plurality of current collecting branches 31 respectively.

[0068] The embodiment of the utility model also provides an outdoor unit, including the above-mentioned heat exchanger. Since the heat exchanger has excellent heat exchange efficiency and stability, the outdoor unit can show higher performance and longer service life during operation. Optionally, the outdoor unit may also combine other advanced technologies and features, such as intelligent control, low-noise operation, etc., to provide users with a better use experience.

[0069] The embodiment of the utility model also provides an air conditioning system, including the above-mentioned heat exchanger, or, including the above-mentioned outdoor unit. The air conditioning system can significantly improve energy utilization efficiency and reduce production and operation costs while ensuring comfort, which is of great significance for promoting green development and energy conservation and emission reduction in the air conditioning industry.

[0070] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A heat exchanger, characterized in that: include: A heat exchanger body (10) is provided with a plurality of heat exchange channels, each of which has a fluid inlet and a fluid outlet; A plurality of flow splitter assemblies (20), each of the flow splitter assemblies (20) comprising a plurality of flow splitter branch pipes (21), and the plurality of flow splitter branch pipes (21) of the plurality of flow splitter assemblies (20) are respectively connected to the plurality of heat exchange channels in a one-to-one correspondence; A flow collecting assembly (30) connected to the fluid outlets of the plurality of heat exchange channels respectively; The heat exchanger body (10) is divided into a plurality of cooling zones based on different wind fields, and each cooling zone is correspondingly provided with at least one flow diversion component (20).

2. The heat exchanger according to claim 1, characterized in that: The plurality of heat exchange channels are arranged in sequence along the vertical direction, the plurality of flow diversion components (20) are arranged in sequence along the vertical direction, and the plurality of flow diversion branches (21) of each of the flow diversion components (20) are connected one-to-one with the plurality of heat exchange channels at corresponding heights.

3. The heat exchanger according to claim 1 or 2, characterized in that: The diameters of the plurality of flow branch pipes (21) of the flow branch assembly (20) are equal.

4. The heat exchanger according to claim 3, characterized in that: The diameters of the flow branch pipes (21) are the same among the plurality of flow branch components (20).

5. The heat exchanger according to claim 1 or 2, characterized in that: The flow dividing component (20) further comprises: Diversion Supervisor (22); A flow divider (23), wherein the inlet of the flow divider (23) is connected to the flow divider main pipe (22), and the plurality of outlets of the flow divider (23) are connected to the plurality of flow divider branch pipes (21) in a one-to-one correspondence.

6. The heat exchanger according to claim 1, characterized in that: The heat exchange flow channel comprises a plurality of heat exchange holes (11), wherein the plurality of heat exchange holes (11) are connected end to end, wherein the head end of one of the heat exchange holes (11) forms the fluid inlet, and the tail end of another of the heat exchange holes (11) forms the fluid outlet.

7. The heat exchanger according to claim 6, characterized in that Adjacent heat exchange holes (11) are connected end to end via a connecting pipe (12), and the connecting pipe (12) is a bent pipe structure.

8. The heat exchanger according to claim 7, characterized in that Adjacent heat exchange holes (11) are connected via a connecting pipe (12) located outside the heat exchanger body (10).

9. The heat exchanger according to claim 7 or 8, characterized in that: The end of the connecting pipe (12) is detachably connected to the heat exchanger body (10).

10. The heat exchanger according to claim 1, characterized in that The current collecting assembly (30) comprises: A plurality of collecting branch pipes (31) connected to the plurality of heat exchange flow channels in a one-to-one correspondence; At least one collecting main pipe (32) is connected to the plurality of collecting branch pipes (31).

11. An outdoor unit, characterized in that: Comprising the heat exchanger according to any one of claims 1 to 10.

12. An air conditioning system, characterized in that: It comprises the heat exchanger according to any one of claims 1 to 10, or it comprises the outdoor unit according to claim 11.

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