Heat exchanger and heat exchange system

Abstract

The invention provides a heat exchanger and a heat exchange system, the heat exchanger comprises a first collecting plate, a second collecting plate and a plurality of heat exchange modules, the first collecting plate and the second collecting plate are oppositely arranged, and the heat exchange modules are arranged between the first collecting plate and the second collecting plate at intervals; each heat exchange module comprises at least one cooling pipe and heat exchange fins arranged on the outer surface of the cooling pipe, and at least two heat exchange modules in the multiple heat exchange modules comprise different heat exchange fins. The first collecting plate comprises at least two first collecting cavities, and the second collecting plate comprises at least one second collecting cavity. Any two adjacent first collecting cavities are isolated from each other and communicate with the same second collecting cavity through the cooling pipe included in the first heat exchange module and the cooling pipe included in the second heat exchange module. The heat exchanger is formed by combining the multiple heat exchange modules and can be adjusted according to different application scenes, the better heat exchange effect is achieved, the application scenes are wide, and the manufacturing cost is low.

Description

Technical Field

[0001] The present application relates to the technical field of heat dissipation, and particularly relates to a heat exchanger and a heat exchange system. Background Art

[0002] A heat exchanger is a key device in a heat exchange system. The heat transfer medium in the heat exchange system can exchange heat with the external environment through the heat exchanger. The heat exchanger can be regarded as the main outlet of the heat of the heat exchange system, and the heat dissipation performance of the heat exchanger directly affects the operating efficiency of the heat exchange system.

[0003] In traditional technology, a heat exchanger generally includes a flat tube with heat exchange fins on its outer surface. The flat tube is used for flowing the heat transfer medium, and the heat transfer medium can exchange heat with the external environment through the heat exchange fins. The heat transfer medium will undergo a phase change during the heat exchange process. The phase change of the heat transfer medium is related to the heat transfer coefficient and also affects the heat exchange efficiency of the heat exchanger. At present, the structural form of the heat exchanger is fixed and cannot adapt to multiple application scenarios, and the production cost is high. Summary of the Invention

[0004] The present application provides a heat exchanger and a heat exchange system to improve the development and manufacturing efficiency and reduce the production cost.

[0005] In a first aspect, a heat exchanger is provided. The heat exchanger can be applied to an air-cooled heat exchange scenario. The heat exchanger includes a first collecting plate, a second collecting plate, and a plurality of heat exchange modules. The first collecting plate and the second collecting plate are arranged opposite to each other, and the plurality of heat exchange modules are arranged at intervals between the first collecting plate and the second collecting plate. Each heat exchange module includes at least one cooling tube and heat exchange fins arranged on the outer surface of the cooling tube. The two ends of the cooling tube are respectively communicated with the first collecting plate and the second collecting plate. The heat transfer medium can flow between the first collecting plate and the second collecting plate through the cooling tube. The heat exchange fins are used for heat exchange with the ambient air to realize the cooling or heating of the heat transfer medium. At least two of the plurality of heat exchange modules include different heat exchange fins, and heat exchange modules including different heat exchange fins can be selected according to needs. The first collecting plate includes at least two first collecting cavities, and the second collecting plate includes at least one second collecting cavity. The first collecting cavities and the second collecting cavity are both used for accommodating and flowing the heat transfer medium. Among them, any two adjacent first collecting cavities are isolated from each other and are respectively communicated with the same second collecting cavity through the cooling tube included in the first heat exchange module and the cooling tube included in the second heat exchange module. The heat transfer medium in one of the first collecting cavities can flow to the second collecting cavity through the cooling tube included in the first heat exchange module and flow to another first collecting cavity through the cooling tube included in the second heat exchange module, realizing the turning of the flow direction of the heat transfer medium, and enabling the heat transfer medium to achieve at least two processes.

[0006] The heat exchange modules in this heat exchanger can be manufactured as the smallest unit structures, and can be designed and assembled according to different application scenarios of the heat exchanger, improving the development and manufacturing efficiency and reducing the manufacturing cost. In a specific implementation, different heat exchange modules can be combined between two collecting plates to form a heat exchanger for the heat exchange working medium to achieve at least two processes. The cooling tubes and heat exchange fins of different heat exchange modules can adopt different specifications to adapt to the heat exchange characteristics of different scenarios and different processes.

[0007] In a possible implementation manner, the first collecting plate includes a housing and a partition plate arranged inside the housing. The housing has a receiving cavity, and the partition plate isolates the receiving cavity to form at least two first collecting cavities. After the heat exchange working medium enters one of the first collecting cavities, it can only flow to the second collecting plate through the cooling tubes included in the heat exchange module communicated with this first collecting cavity, and flow to another first collecting cavity through the cooling tubes included in other heat exchange modules, realizing the process switching of the heat exchange working medium. Among them, when the second collecting plate has at least two second collecting cavities, the second collecting plate can also be realized by using a partition plate to isolate the receiving cavity of the second collecting plate.

[0008] Specifically, the housing includes a bottom shell and a top cover. The bottom shell has an opening facing multiple heat exchange modules, and the top cover is fixed to the housing and covers the opening to form a receiving cavity. Among them, the top cover has a diversion hole for communicating the cooling tube with the receiving cavity. On the one hand, the diversion hole can realize the communication between the cooling tube and the receiving cavity, and on the other hand, it can be used for plugging and fixing the cooling tube.

[0009] In a possible implementation manner, multiple heat exchange modules are arranged at intervals along a set direction, and the set direction is the air inlet and outlet direction of the heat exchanger, so that the ambient air passes through multiple heat exchange modules in sequence. Along the set direction, the wind resistance of the heat exchange fins in the heat exchange module on the air inlet side of the heat exchanger is smaller than that of the heat exchange fins in the heat exchange module on the air outlet side of the heat exchanger. The air inlet side of the heat exchanger is the outflow side of the heat exchange working medium, and the air outlet side of the heat exchanger is the inflow side of the heat exchange working medium. The heat exchange working medium enters the heat exchanger from the air outlet side of the heat exchanger. The heat exchange capacity of the heat exchange working medium is relatively strong, and the heat exchange fins with high wind resistance have a stronger heat exchange rate, enabling the heat exchange working medium to fully exchange heat with the ambient air and enhancing the heat exchange effect. When the heat exchange working medium circulates in the heat exchanger to the air inlet side, the heat exchange capacity of the heat exchange working medium weakens. Selecting heat exchange fins with low wind resistance can reduce the wind resistance of the entire heat exchanger and improve the energy-saving coefficient.

[0010] In a possible implementation manner, each cooling tube includes at least one flow channel, and both ends of each flow channel are respectively communicated with the first collecting cavity and the second collecting cavity. In a specific implementation, by differentiating and designing the number and size of the flow channels of the cooling tubes included in different heat exchange modules, the flow rate and flow volume of the heat exchange working medium can be changed, and the heat exchange effect can be changed.

[0011] In a possible implementation, each heat exchange module includes a plurality of cooling tubes arranged at intervals, and heat exchange fins are provided between any two adjacent cooling tubes. The heat exchange fins located between two adjacent cooling tubes can be shared by the two cooling tubes.

[0012] In a possible implementation, each heat exchange module further includes two protective covers. The plurality of cooling tubes are located between the two protective covers. The protective covers are fixedly connected to the cooling tubes through the heat exchange fins. The protective covers can protect the cooling tubes and the heat exchange fins. When assembled and fixed to the collecting plate, the protective covers can also assist in the fixed installation.

[0013] Specifically, along the extending direction of the cooling tubes, the length of the protective cover is less than the length of the cooling tubes, so as not to affect the plug-in fixation between the cooling tubes and the collecting plate.

[0014] Wherein, at least one end of each of the two ends of the protective cover along the extending direction of the cooling tubes is provided with a bent portion bent towards the side of the cooling tubes. The bent portion can play a certain protective role for the heat exchange fins along the length direction of the cooling tubes.

[0015] In a possible implementation, at least one protective cover is shared between at least two adjacent heat exchange modules, so that an integral structure is formed between at least two adjacent heat exchange modules, which is convenient for installation.

[0016] In a possible implementation, the heat exchange fin structures included in at least two adjacent heat exchange modules are the same and connected. One heat exchange fin can correspond to the cooling tubes included in different heat exchange modules, which improves the integrity of multiple heat exchange modules and reduces the installation and manufacturing difficulty.

[0017] In a possible implementation, the first collecting plate includes a strengthening structure disposed in the first collecting cavity, and / or, the second collecting plate includes a strengthening structure disposed in the second collecting cavity. The strengthening structure can improve the structural strength of the collecting plate and enhance the structural stability of the heat exchanger.

[0018] In a second aspect, a heat exchange system is provided, including a device to be heat-exchanged and any heat exchanger provided in the first aspect above. The heat exchanger and the device to be heat-exchanged are connected through pipelines, and the pipelines are used for the heat exchange working medium to flow between the device to be heat-exchanged and the heat exchanger. This heat exchange system can change different combination modes of the heat exchanger according to different application scenarios to adapt to various heat exchange scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a heat exchange system provided by an embodiment of the present application;

[0020] Figure 2 It is a schematic structural diagram of a heat exchanger provided by an embodiment of the present application;

[0021] Figure 3a Schematic diagram of the arrangement of multiple heat exchange modules in a heat exchanger provided by an embodiment of the present application;

[0022] Figure 3b Schematic diagram of the arrangement of multiple heat exchange modules in a heat exchanger provided by an embodiment of the present application;

[0023] Figure 3c Schematic diagram of the arrangement of multiple heat exchange modules in a heat exchanger provided by an embodiment of the present application;

[0024] Figure 4 Schematic diagram of the structure of a heat exchange module in a heat exchanger provided by an embodiment of the present application;

[0025] Figure 5a Schematic diagram of the structure of a heat exchange module in a heat exchanger provided by an embodiment of the present application;

[0026] Figure 5b Schematic diagram of the structure of a heat exchange module in a heat exchanger provided by an embodiment of the present application;

[0027] Figure 6 Schematic diagram of the structure of the cooling pipe of a heat exchange module in a heat exchanger provided by an embodiment of the present application;

[0028] Figure 7a Schematic diagram of the structure of a heat exchanger provided by an embodiment of the present application;

[0029] Figure 7b For Figure 7a Detail enlarged view at location A in

[0030] Figure 8a Schematic diagram of the structure of the collecting plate of a heat exchanger provided by an embodiment of the present application;

[0031] Figure 8b Schematic diagram of the structure of the collecting plate of a heat exchanger provided by an embodiment of the present application;

[0032] Figure 9 Schematic diagram of the assembly of the heat exchange module and the collecting plate in a heat exchanger provided by an embodiment of the present application;

[0033] Figure 10a Schematic diagram of the structure of multiple heat exchange modules of a heat exchanger provided by an embodiment of the present application;

[0034] Figure 10b For Figure 10a Detail enlarged view at location B in

[0035] Figure 10c Schematic diagram of the structure of multiple heat exchange modules of a heat exchanger provided by an embodiment of the present application;

[0036] Figure 11a An exploded view of a heat exchanger provided by an embodiment of the present application;

[0037] Figure 11b An exploded view of a heat exchanger provided by an embodiment of the present application;

[0038] Figure 12a A perspective view of a first collecting plate of a heat exchanger provided by an embodiment of the present application;

[0039] Figure 12b A perspective view of a second collecting plate of a heat exchanger provided by an embodiment of the present application;

[0040] Figure 13a A schematic sectional view of a heat exchanger provided by an embodiment of the present application;

[0041] Figure 13b A schematic sectional view of a heat exchanger provided by an embodiment of the present application;

[0042] Figure 13c A schematic sectional view of a heat exchanger provided by an embodiment of the present application;

[0043] Figure 14a A schematic sectional view of a heat exchanger provided by an embodiment of the present application;

[0044] Figure 14b A schematic sectional view of a heat exchanger provided by an embodiment of the present application.

[0045] Reference numerals: 10 - heat exchanger; 20 - equipment to be heat-exchanged; 30 - pipeline; 40 - liquid storage tank; 50 - pump body; 1 - collecting plate; 1a - first collecting plate; 1b - second collecting plate; 111 - bottom shell; 1111 - strengthening structure; 1112 - partition; 112 - top cover; 1121 - diversion hole; 2 - heat exchange module; 2a - first heat exchange module; 2b - second heat exchange module; 21 - cooling pipe; 211 - flow channel; 22 - heat exchange fins; 23 - protective cover plate; 231 - bent part. Detailed implementation manners

[0046] In the air-conditioning refrigeration industry or other refrigeration industries, the heat exchange system can achieve the heat exchange between the heat exchange working medium and the external environment through a heat exchanger. The heat exchanger includes a pipeline for flowing the heat exchange working medium and fins for heat exchange with the external environment. However, the structural form of the heat exchanger is fixed. For different application scenarios, it is necessary to develop different fins and different pipeline shapes according to the product to improve the heat exchange performance. The mold opening and processing costs lead to high production costs, and there are application limitations.

[0047] Based on this, the embodiments of the present application provide a heat exchanger and a heat exchange system. The heat exchanger is composed of multiple heat exchange modules and can be adjusted according to different application scenarios to achieve better heat exchange effects.

[0048] In order to make the objectives, technical solutions, and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings.

[0049] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of the present application, the singular forms "a", "an", "the", "above", "said", "this" are also intended to include expressions such as "one or more", unless the context clearly indicates otherwise.

[0050] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, the phrases "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification are not necessarily all referring to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having", and their variants mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0051] First, the professional terms involved in the present application are explained.

[0052] Heat transfer working fluid: The gas and / or liquid flowing in the liquid cooling system, used to dissipate heat or heat the heat-generating device. The heat transfer working fluid can exchange heat with the external gas through a heat exchanger.

[0053] Dryness: When the heat transfer working fluid undergoes gas-liquid phase change during the heat exchange process, dryness refers to the ratio of the gas phase mass to the total mass of the heat transfer working fluid, and can also be used to represent the gas-liquid ratio. The greater the dryness, the greater the proportion of the gas phase and the smaller the proportion of the liquid phase. When the dryness is 1, it means that the heat transfer working fluid is a pure gas phase, and when the dryness is 0, it means that the heat transfer working fluid is a pure liquid phase.

[0054] Heat transfer coefficient: The greater the heat transfer coefficient, the stronger the heat transfer ability of the heat transfer working fluid; the heat transfer coefficient is related to the flow velocity and composition (gas-liquid composition) of the heat transfer working fluid.

[0055] Such as Figure 1As shown in the figure, an embodiment of the present application provides a heat exchange system, which can be applied in technical fields such as air-cooled air-conditioning refrigeration. Specifically, it can include the air-conditioning system of a base station or the air-conditioning system of a data center, and can also be the air-conditioning system of an automobile. Figure 1 The basic architecture of a heat exchange system is shown. The heat exchange system includes a heat exchanger 10 and a device to be heat-exchanged 20. The heat exchanger 10 and the device to be heat-exchanged 20 are connected by a pipeline 30, and the pipeline 30 is used for circulating a heat exchange working medium. When the heat exchange working medium circulates in the pipeline 30, it can always remain in a liquid state or always remain in a gaseous state, and the phase state of the heat exchange working medium can also change when it circulates in the pipeline 30. Exemplarily, the gaseous state of the heat exchange working medium is water vapor, the liquid state is water, and the dryness of the heat exchange working medium will change during the flow process. If the heat exchange working medium is water vapor, the dryness of the heat exchange working medium is 1. If the heat exchange working medium is liquid water, the dryness of the heat exchange working medium is 0. When water flows through the heat exchanger 10, the dryness of the heat exchange working medium will change.

[0056] Please continue to refer to Figure 1 , the heat exchange system may further include a liquid storage tank 40 and a pump body 50. The liquid storage tank 40 is used for storing the heat exchange working medium. The two ends of the pipeline 30 are respectively connected to the liquid outlet and the liquid inlet of the liquid storage tank 40 to form a cooling loop. The heat exchanger 10, the device to be heat-exchanged 20, and the pump body 50 are respectively arranged on the pipeline 30. The water pump 50 is used to provide driving force for the heat exchange working medium to drive the heat exchange working medium to circulate in the cooling loop. The heat exchange working medium can exchange heat with the external space or its working medium through the heat exchanger 10 at the heat exchanger 10, and cool down or heat up the device to be heat-exchanged 20. When the heat exchange system cools down the device to be heat-exchanged 20, the heat exchanger 10 is a condenser, and the heat exchange working medium will lose heat and cool down after passing through the heat exchanger 10, and the heat exchange working medium has a tendency to change from gas phase to liquid phase. The heat exchange working medium with a reduced temperature can cool down the device to be heat-exchanged 20. When the heat exchange system heats up the device to be heat-exchanged 20, the heat exchanger 10 is an evaporator, and the heat exchange working medium will absorb heat and heat up after passing through the heat exchanger 10, and the heat exchange working medium has a tendency to change from liquid phase to gas phase. The heat exchange working medium with an increased temperature can heat up and keep warm the device to be heat-exchanged 20.

[0057] As Figure 2 shown, the heat exchanger 10 includes two collecting plates 1 and a plurality of heat exchange modules 2. The two collecting plates 1 are arranged opposite to each other, and the plurality of heat exchange modules 2 are arranged at intervals between the two collecting plates 1. It is set that the arrangement direction of the two collecting plates 1 is perpendicular to the air inlet and outlet direction of the heat exchanger 10, and the air inlet and outlet direction of the heat exchanger 10 is used as the reference for the set direction. Observing the plurality of heat exchange modules 2 along the arrangement direction of the two collecting plates 1, the plurality of heat exchange modules 2 can be as Figure 3aArranged along the set direction as shown, the inlet and outlet air of the heat exchanger 10 can successively pass through multiple heat exchange modules 2. This structure is suitable for scenarios where the area in the inlet and outlet air direction is small and the depth is large. Alternatively, the multiple heat exchange modules 2 can also be arranged as Figure 3b Arranged along the direction perpendicular to the set direction as shown, the inlet and outlet air of the heat exchanger 10 simultaneously pass through multiple heat exchange modules 2. This structure is suitable for scenarios where the area in the inlet and outlet air direction is large and the depth is small. Alternatively, the multiple heat exchange modules 2 can also be arranged as Figure 3c Shown in an array distribution, this structure is equivalent to Figure 3a The structure shown and Figure 3b The combination of the structures shown, suitable for scenarios with no requirements for the layout space, and the number of rows and columns of the heat exchange modules 2 can be changed as needed. Of course, the multiple heat exchange modules 2 can also be arranged in an irregular arrangement. Among them, the shape, number, and arrangement method of the heat exchange modules 2 are only examples.

[0058] As Figure 4 Shown, the heat exchange module 2 includes at least one cooling tube 21 and heat exchange fins 22 arranged on the outer surface of the cooling tube 21. Each cooling tube 21 has at least one flow channel 211 extending along the length direction of the cooling tube 21. Here, the flow channel 211 is schematically shown by a dotted line. Each collecting plate 1 has a chamber for accommodating the heat exchange working medium, and the chambers of the two collecting plates 1 are connected through at least one flow channel 211 included in the cooling tube 21, so that the heat exchange working medium can flow between the two collecting plates 1 through the cooling tube 21. When the heat exchange working medium flows through the cooling tube 21, the heat exchange working medium can exchange heat with the external environment through the heat exchange fins 22 on the outer surface of the cooling tube 21. Specifically, for each cooling tube 21, the heat exchange fins 22 can be arranged anywhere on the outer surface of the cooling tube 21. When multiple cooling tubes 21 are arranged at intervals, the heat exchange fins 22 can be arranged between two adjacent cooling tubes 21. In Figure 4 , the multiple cooling tubes 21 are arranged at intervals along the up-and-down direction shown in the figure, heat exchange fins 22 are arranged on both the upper and lower sides of each cooling tube 21, and heat exchange fins 22 are arranged between any two cooling tubes 21.

[0059] Among them, different heat exchange modules 2 can have the same heat exchange fins 22, and different heat exchange modules 2 can also include different heat exchange fins 22. The types of heat exchange fins 22 can be continuous fins, discontinuous fins, or longitudinal vortex fins. Such as plain fins, louver fins, corrugated fins, staggered fins, convex finned fins, etc. The above structures of the heat exchange fins 22 can be deformed, such as perforated corrugated fins, staggered louver fins, split louver fins, plain convex finned fins, plain perforated fins, etc. The present application does not make specific limitations, and can be selected according to the application requirements.

[0060] As Figure 5aAs shown, the heat exchange module 2 may further include two protective covers 23. The two protective covers 23 are disposed on both sides of the plurality of cooling tubes 21, and the protective covers 23 are fixedly connected to the cooling tubes 21 through heat exchange fins 22. It can be considered that the plurality of cooling tubes 21 and the plurality of groups of heat exchange fins 22 are clamped by the two protective covers 23, and the two protective covers 23 can protect the cooling tubes 21 and the heat exchange fins 22. When assembled with the two collecting plates 1, the two ends of the cooling tubes 21 are respectively fixed to the two collecting plates 1 by plugging, and there may be a gap between the two protective covers 23 and the collecting plates 1, which can reduce the difficulty of structural assembly while playing a protective role. Specifically, the length of the cooling tube 21 is H1, and the dimension of the protective cover 23 along the length direction of the cooling tube 21 is H2, and H1 is greater than H2. And, along the length direction of the cooling tube 21, both ends of the protective cover 23 are the ends that fan out the cooling tube 21.

[0061] In some embodiments, as Figure 5b shown, the end of the protective cover 23 along the length direction of the cooling tube 21 has a bent portion 231, and the bent portion 231 is bent toward the cooling tube 21 side, so that the bent portion 231 can protect the end side of the heat exchange fin 22 along the length direction of the cooling tube 21.

[0062] As Figure 6 shown, the cooling tube 21 of the heat exchange module 2 can be a flat tube. With reference to the arrangement of the plurality of cooling tubes 21 in a certain direction, the cooling tube 21 has a smaller height and a larger width. When the heat exchange module 2 includes a plurality of cooling tubes 21, it can be Figure 6 shown that a plurality of cooling tubes 21 are arranged at intervals in the height direction. Along the height direction of the cooling tube 21, the upper and lower parts of the outer surface of the cooling tube 21 have a larger area, and the heat exchange fins 22 can be disposed on both sides of the cooling tube 21 in the height direction, so that the cooling tube 21 can have a larger contact area with the heat exchange fins 22, improving the heat dissipation effect. When the heat exchanger 10 includes a plurality of heat exchange modules 2, adjacent heat exchange modules 2 can share the protective cover 23.

[0063] Please continue to refer to Figure 6The cooling pipe 21 shown can include a plurality of flow channels 211. The plurality of flow channels 211 are isolated from each other, and both ends of each flow channel 211 communicate with the chambers of two collecting plates 1 respectively. The inner diameter dimension of the flow channel 211 is the radial dimension of the cross-section perpendicular to the extending direction of the flow channel 211. The inner diameter dimensions of the plurality of flow channels 211 can be the same or different, and different inner diameters can characterize the ability of the flow channel 211 to transport the heat exchange working medium. For the cooling pipes 21 included in different heat exchange modules 2, the inner diameter dimension of the flow channel 211 of the cooling pipe 21 can be changed, so as to change the transportation ability of different heat exchange modules 2 for the heat exchange working medium, and change the flow velocity and flow rate of the heat exchange working medium. Of course, the shape, number and arrangement mode of the flow channels 211 are not limited in the embodiments of the present application.

[0064] As Figure 7a shown, a heat exchanger 10 includes two collecting plates 1 and a plurality of heat exchange modules 2. The plurality of heat exchange modules 2 are arranged between the two collecting plates 1 along a set direction, and the plurality of heat exchange modules 2 share two protective cover plates 23. The two protective cover plates 23 are arranged in an approximately parallel manner, and each protective cover plate 23 is approximately parallel to the set direction, so that the incoming and outgoing air can pass through the plurality of heat exchange modules 2 in turn along a direction parallel to the protective cover plate 23. For each heat exchange module 2, a plurality of cooling pipes 21 are arranged at intervals along the arrangement direction of the two protective cover plates 23, and heat exchange fins 22 are arranged between any two cooling pipes 21. The protective cover plate 23 and the cooling pipe 21 are fixedly connected through the heat exchange fins 22.

[0065] Figure 7b shows Figure 7a the enlarged detail view of part A in. As Figure 7b shown, the end of each cooling pipe 21 is embedded in the collecting plate 1, so that the cooling pipe 21 can communicate with the internal cavity of the collecting plate 1. The bent portions 231 of the two protective cover plates 23 can abut against the collecting plate 1 to increase the structural stability.

[0066] Figure 8a shows the structure of the collecting plate 1. As Figure 8a shown, the collecting plate 1 includes a bottom shell 111 and a top cover 112. The bottom shell 111 has an opening facing the plurality of heat exchange modules 2, and the top cover 112 is fixed to the bottom shell 111 and covers the opening, so that an accommodation cavity R can be formed between the bottom shell 111 and the top cover 112, and this accommodation cavity R is the internal cavity for accommodating the heat exchange working medium. It can be considered that the bottom shell 111 and the top cover 112 cooperate to form the housing of the collecting plate 1, and the inner cavity of this housing is the accommodation cavity R. The top cover 112 has a plurality of diversion holes 1121, and each diversion hole 1121 penetrates through the top cover 112 along the thickness direction of the top cover 112 to communicate with the accommodation cavity R. When the end of the cooling pipe 21 is fixedly matched with the collecting plate 1, the end of the cooling pipe 21 can be matched with the diversion hole 1121, so as to realize the communication between the cooling pipe 21 and the accommodation cavity R of the collecting plate 1.

[0067] Figure 8b An exploded view of the collecting plate 1 is shown. The bottom shell 111 is in the shape of an open box, and the top cover 112 can cover the opening of the bottom shell 111. A plurality of reinforcing structures 1111 are also provided inside the bottom shell 111, and the reinforcing structures 1111 are exemplarily columnar. One end of each reinforcing structure 1111 is fixed to the bottom of the bottom shell 111 facing the top cover 112 and is perpendicular to the top cover 112. When the top cover 112 is assembled to the opening of the bottom shell 111, the end of the reinforcing structure 1111 away from the bottom shell 111 can abut against the top cover 112, playing a role in supporting and strengthening, and improving the structural stability of the heat exchanger 10. Moreover, the reinforcing structure 1111 avoids the flow guide holes 1121 and will not impede the passage of the heat exchange working medium through the flow guide holes 1121. It should be understood that the presence of the reinforcing structure 1111 will have a certain impact on the flow of the heat exchange working medium in the accommodation cavity R, and different shapes of the reinforcing structure 1111 need to be selected according to different application scenarios and structural designs. Figure 8b The columnar reinforcing structure 1111 is only an example, and its arrangement pattern is also only an example.

[0068] The assembly connection between the heat exchange module 2 and the collecting plate 1 can be fixed by welding or frame bolts. Figure 9 A partial sectional structural schematic diagram of the assembly of the heat exchange module 2 and the collecting plate 1 is shown. As Figure 9As shown, the end of the cooling tube 21 in the heat exchange module 2 passes through the guide hole 1121 on the top cover 112 and enters the accommodating cavity R of the collecting plate 1. The outer wall of the cooling tube 21 abuts against the inner wall of the guide hole 1121, so as to realize the connection between the flow channel 211 of the cooling tube 21 and the accommodating cavity R. The end of the reinforcing structure 1111 fixed to the bottom shell 111 away from the bottom shell 111 abuts against the top cover 112 to improve the structural strength of the collecting plate 1. Among them, the guide hole 1121 has an edge b bent toward the accommodating cavity R of the collecting plate 1. Since the heat exchange module 2 points to the direction of the collecting plate 1, the inner diameter of the guide hole 1121 at least partially has a tendency to decrease, so as to facilitate the alignment and installation of the cooling tube 21 and the guide hole 1121. With reference to the arrangement direction of the two collecting plates 1, for example, taking one of the guide holes 1121 as an example, the inner diameter size of a certain position close to the side of the heat exchange module 2 is w1, and the inner diameter size of another position closer to the side of the collecting plate 1 is w2, and w1 is greater than w2. When the cooling pipe 21 is installed in conjunction with the guide hole 1121, the cooling pipe 21 first passes through the position with the inner diameter size w1. The larger size of w1 can reserve a larger position adjustment space for the cooling pipe 21, which is convenient for the cooling pipe 21 to align with the guide hole 1121. The cooling pipe 21 continues to be inserted to the position where the inner diameter size is w2, and the outer wall of the cooling pipe 21 and the inner wall of the guide hole 1121 can be abutted and matched to achieve installation and fixation. In some embodiments, auxiliary installation and fixation can also be used with the help of a clamp or the like. In addition, the edge b of the guide hole 1121 continues to extend a distance to the side of the collecting plate 1 at the position where the inner diameter size is w2, increasing the contact area between the cooling pipe 21 and the guide hole 1121, and improving the installation strength and sealing.

[0069] Figure 10a The structure of multiple heat exchange modules 2 is illustrated. Figure 10a As shown, a plurality of heat exchange modules 2 are arranged in sequence along a set direction. For ease of understanding, any two adjacent heat exchange modules 2 are separated by a dotted shaded surface. Each heat exchange module 2 includes a plurality of cooling tubes 21, and the plurality of cooling tubes 21 are arranged in sequence perpendicular to the set direction. The arrangement direction of the plurality of cooling tubes 21 is the thickness direction of the cooling tubes 21. Along the thickness direction of the cooling tubes 21, heat exchange fins 22 are arranged on both sides of each cooling tube 21, so that a heat exchange fin 22 is arranged between any two cooling tubes 21.

[0070] Figure 10b for Figure 10a A detailed enlarged view of B in the figure. In each heat exchange module 2, a plurality of cooling tubes 21 are arranged at intervals along the thickness direction of the cooling tube 21, and each cooling tube 21 has a plurality of flow channels 211, and the plurality of flow channels 211 are arranged along a set direction. The heat exchange fins 22 in the plurality of heat exchange modules 2 in the dotted box are shared, that is, a heat exchange fin 22 can contact the cooling tubes 21 of the same layer in the plurality of heat exchange modules 2 at the same time.

[0071] As Figure 10c described, multiple heat exchange modules 2 are arranged in a set direction. Specifically, the number of heat exchange modules 2 is five groups. Taking Figure 10c the set direction shown as a reference, counting from top to bottom, the heat exchange fins 22 included in the upper heat exchange module 2 are separated from the heat exchange fins 22 included in the four lower heat exchange modules 2, and the heat exchange fins 22 included in the four lower heat exchange modules 2 are shared.

[0072] It can be considered that the structures of the heat exchange fins 22 in multiple heat exchange modules 2 sharing the heat exchange fins 22 are the same, and the heat exchange fins 22 between two adjacent heat exchange modules 2 along the set direction are connected to achieve sharing. In a specific application, along the set direction, different heat exchange fins 22 of different heat exchange modules 2 can be differentially selected to obtain better heat exchange effects and lower energy consumption. For the entire heat exchanger 10, compared with a single type of heat exchange fins, the combined heat exchange fins 22 with different wind resistances can reduce the overall wind resistance of the heat exchanger 10 and achieve an energy-saving effect under the same air-cooling requirements.

[0073] For the heat exchanger 10 provided in the embodiment of the present application, taking the path of the heat exchange working medium flowing from one collecting plate 1 through the cooling tube 21 of one heat exchange module 2 into another collecting plate 1 as an example, it can be considered that the heat exchange working medium has passed through one process. The heat exchanger 10 provided in the present application can provide at least two processes for the heat exchange working medium, that is, the flow direction of the heat exchange working medium at least includes flowing from one collecting plate 1 through the cooling tube 21 included in at least one heat exchange module 2 into another collecting plate 1, and then flowing from another collecting plate 1 through the cooling tube 21 included in at least one heat exchange module 2 into one collecting plate 1. It should be understood that in the two processes, the heat exchange modules 2 are different. Next, taking Figure 10a and Figure 10b the multiple heat exchange modules 2 shown as an example to illustrate this solution.

[0074] As Figure 11aExploded view of the heat exchanger 10 shown. The heat exchanger 10 includes two collecting plates 1 and a plurality of heat exchange modules 2. The two collecting plates 1 are the first collecting plate 1a and the second collecting plate 1b respectively. The plurality of heat exchange modules 2 are arranged in a set direction and share two protective covers 23. Each heat exchange module 2 includes a plurality of cooling tubes 21 and a plurality of heat exchange fins 22. Among them, the plurality of heat exchange modules 2 are divided into a part within the dashed box S1 and another part within the dashed box S2. The types of the heat exchange fins 22 included in the heat exchange modules 2 within the dashed box S1 are different from the types of the heat exchange fins 22 included in the heat exchange modules 2 within the dashed box S2. Exemplarily, the heat exchange fins 22 included in different heat exchange modules 2 within the dashed box S2 are connected along the set direction. It can be considered that the cooling tubes 21 included in different heat exchange modules 2 within the dashed box S2 share the heat exchange fins 22. When the cooling tubes 21 included in different heat exchange modules 2 share the heat exchange fins 22, these several heat exchange modules 2 can be considered to have an integral structure and can be manufactured and installed using the same specifications, reducing the manufacturing difficulty.

[0075] In Figure 11a the two collecting plates 1 are the first collecting plate 1a and the second collecting plate 1b respectively. Figure 11a From the illustrated viewing angle, it can be seen that the first collecting plate 1a includes a bottom shell 111 having a partition 1112. The partition 1112 divides the bottom shell 111 along the set direction into two spaces. Figure 11b An exploded view of another perspective of the heat exchanger 10 is shown. The spaces within the bottom shell 111 included in the second collecting plate 1b are connected. The partition 1112 can have an integral structure with the bottom shell 111. When the bottom shell 111 cooperates with the top cover 112, the partition 1112 abuts against the top cover 112.

[0076] Based on Figure 11a and Figure 11b the exploded view of the heat exchanger 10 shown, Figure 12a a perspective structure of the first collecting plate 1a is shown, Figure 12b a perspective structure of the second collecting plate 1b is shown. As Figure 12a shown, the accommodation cavity formed by the snap - fit of the bottom shell 111 and the top cover 112 included in the first collecting plate 1a is divided into two spaces by the partition 1112, such that the first collecting plate 1a includes two first collecting cavities r1 arranged along the set direction. Due to the presence of the partition 1112, the two first collecting cavities r1 are adjacent and isolated from each other along the set direction. Exemplarily, one of the first collecting cavities r1 is connected to an opening K, and the other first collecting cavity r1 is connected to another opening K. As Figure 12b shown, the accommodation cavity formed by the snap - fit of the bottom shell 111 and the top cover 112 included in the second collecting plate 1b is the second collecting cavity r2.

[0077] The heat exchanger 10 provided by the embodiment of the present application includes two collecting plates 1, and each collecting plate 1 includes at least one collecting cavity for accommodating a heat exchange working medium. One of the collecting plates includes two collecting cavities arranged adjacent to each other and isolated from each other in a set direction, and the two collecting cavities are respectively communicated with the same collecting cavity of the other collecting plate 1 through the cooling pipes 21 included in different heat exchange modules 2.

[0078] Figure 13a FIG. shows a simplified schematic diagram of the sectional structure of a heat exchanger 10. The heat exchanger 10 is an evaporator. Next, the working principle of the heat exchanger 10 will be introduced by taking the heat exchanger 10 as an evaporator as an example. For an evaporator, the heat exchange working medium may always be in a liquid phase or change from a liquid phase to a gas phase with an increasing dryness during the flow in the heat exchanger 10. There are two heat exchange modules 2 arranged between the two collecting plates 1 in a set direction. The cooling pipes 21 included in the two heat exchange modules 2 are exemplified here, and the two ends of the cooling pipes 21 are respectively communicated with the two collecting plates 1. The two heat exchange modules 2 are respectively a first heat exchange module 2a and a second heat exchange module 2b. The two collecting plates 1 are respectively shown as a first collecting plate 1a and a second collecting plate 1b. The first collecting plate 1a includes two first collecting cavities r1 arranged in a set direction, and the second collecting plate 1b includes a second collecting cavity r2. The first collecting plate 1a includes two openings K, and the two openings K are respectively communicated with the two first collecting cavities r1. The right first collecting cavity r1 is communicated with the second collecting cavity r2 through the cooling pipe 21 included in the first heat exchange module 2a, and the left first collecting cavity r1 is communicated with the second collecting cavity r2 through the cooling pipe 21 included in the second heat exchange module 2b. When the heat exchange working medium enters the right first collecting cavity r1 from the right opening K, it can flow to the second collecting cavity r2 through the cooling pipe 21 included in the first heat exchange module 2a respectively. The heat exchange working medium in the second collecting cavity r2 can flow to the left first collecting cavity r1 through the cooling pipe 21 included in the second heat exchange module 2b and finally flow out through the left opening K. In Figure 13aIn the structure shown, the two first collecting cavities r1 of the first collecting plate 1a are respectively communicated with the same second collecting cavity r2 of the second collecting plate 1b through the cooling pipes 21 included in different heat exchange modules 2, so that the heat exchange working medium flowing through the heat exchanger 10 realizes two processes. The two heat exchange modules 2 are respectively used for the heat exchange working medium to realize one process, and it can be considered that the two processes are in series. In order to achieve good heat exchange effect, the air inlet and outlet directions are opposite to the overall flow direction of the heat exchange working medium. When the heat exchange working medium enters the heat exchanger 10, the proportion of the gas phase of the heat exchange working medium is large and the heat exchange capacity is strong. At this time, selecting heat exchange fins 22 with high air resistance on the air outlet side of the heat exchanger 10 can further improve the heat exchange efficiency, so that the heat exchange working medium can fully exchange heat with the ambient air and enhance the heat exchange effect. When the heat exchange working medium flows out of the heat exchanger 10, the proportion of the liquid phase of the heat exchange working medium is large and the heat exchange capacity is weak. At this time, selecting heat exchange fins 22 with low air resistance on the air inlet side of the heat exchanger 10 can reduce the overall air resistance of the entire heat exchanger 10 and improve the energy saving coefficient. In addition, the number of heat exchange modules 2 near the air inlet side is large, so the number of processes of the heat exchange working medium is large, and the subcooling degree of the heat exchange working medium at the outlet side can be maintained.

[0079] Figure 13b The sectional structural schematic diagram of the heat exchanger 10 with multiple heat exchange modules 2 is illustrated. When the heat exchange working medium enters the first collecting cavity r1 on the right from the opening K on the right, it can flow to the second collecting cavity r2 through the cooling pipes 21 included in the two first heat exchange modules 2a on the right. The heat exchange working medium in the second collecting cavity r2 can flow to the first collecting cavity r1 on the left through the cooling pipes 21 included in the three second heat exchange modules 2b on the left, and finally flow out through the opening K on the left. In Figure 13b In the structure shown, each first collecting cavity r1 of the first collecting plate 1a is communicated with the same second collecting cavity r2 of the second collecting plate 1b through the cooling pipes 21 included in multiple heat exchange modules 2, so that the heat exchange working medium flowing through the heat exchanger 10 realizes multiple processes. Among them, the cooling pipes 21 included in the two first heat exchange modules 2a on the right are used for the heat exchange working medium to realize one process, and the cooling pipes 21 included in the three second heat exchange modules 2b on the left are used for the heat exchange working medium to realize another process, and it can be considered that the two processes are in series. It can also be considered that the cooling pipes 21 included in the cooling pipes 21 included in the two first heat exchange modules 2a respectively form two processes for the heat exchange working medium to realize, and the two processes are in a parallel relationship. The cooling pipes 21 included in the three second heat exchange modules 2b respectively form three processes for the heat exchange working medium to realize, and the three processes are in a parallel relationship. During the process of the heat exchange working medium flowing into and out of the heat exchanger 10 from the inlet and outlet, if the liquid phase of the heat exchange working medium changes to the gas phase, the volume of the heat exchange working medium has a tendency to increase. Therefore, as Figure 13b illustrated, the number of heat exchange modules 2 corresponding to the process on the inflow side of the heat exchange working medium is less than the number of heat exchange modules 2 corresponding to the process on the outflow side, ensuring the smooth flow of the heat exchange working medium.

[0080] It should be understood that the heat exchanger 10 provided in the embodiments of the present application may also be a condenser. When the heat exchanger 10 is a condenser, the heat transfer working medium may always be in a gas phase during the process of flowing through the heat exchanger 10, or may change from a gas phase to a liquid phase, with a decrease in dryness. During the process of the heat transfer working medium flowing in from the inlet of the heat exchanger 10 and flowing out from the outlet, if the heat transfer working medium changes from a gas phase to a liquid phase, the volume of the heat transfer working medium has a tendency to decrease. Without changing Figure 13b the structure of the heat exchanger 10 shown, by changing the air inlet and outlet directions and the flow direction of the heat transfer working medium, the Figure 13b heat exchanger 10 shown can be applied as a condenser.

[0081] As Figure 13c shown, the structure of the heat exchanger 10 is similar to that of Figure 13b and its working principle is applied as a condenser. The air inlet and outlet direction is from right to left, and the flow direction of the heat transfer working medium is generally from left to right. When the heat transfer working medium enters the left first collection chamber r1 from the left opening K, it can flow through the cooling pipes 21 included in the three second heat exchange modules 2b on the left to the second collection chamber r2 respectively. The heat transfer working medium in the second collection chamber r2 can flow through the cooling pipes 21 included in the two first heat exchange modules 2a on the right to the first collection chamber r1 on the right, and finally flow out through the opening K on the right. When the heat transfer working medium enters the heat exchanger 10, the proportion of the liquid phase of the heat transfer working medium is large and the heat transfer capacity is strong. At this time, selecting heat exchange fins 22 with high wind resistance on the air outlet side of the heat exchanger 10 can further improve the heat transfer efficiency, enabling the heat transfer working medium to fully exchange heat with the ambient air and enhancing the heat transfer effect. When the heat transfer working medium flows out of the heat exchanger 10, the proportion of the gas phase of the heat transfer working medium is large and the heat transfer capacity is weak. At this time, selecting heat exchange fins 22 with low wind resistance on the air inlet side of the heat exchanger 10 can reduce the overall wind resistance of the entire heat exchanger 10 and improve the energy saving coefficient. Among them, the number of heat exchange modules 2 near the air inlet side is large, so the flow path of the heat transfer working medium is long, and the temperature of the heat transfer working medium at the outlet side can be maintained.

[0082] For the heat exchanger 10 provided in the embodiments of the present application, the heat transfer working medium flows through at least two processes in the heat exchanger 10. The main heat transfer of the heat exchanger 10 is exerted on the air outlet side, which is enhanced by combining the high wind resistance heat exchange fins 22 with the heat transfer working medium having high heat transfer capacity, achieving a good heat transfer effect. On the air inlet side of the heat exchanger 10, heat exchange fins 22 with low wind resistance are selected to realize the combination of high wind resistance fins and low wind resistance fins of the heat exchanger 10, reducing the wind resistance of the entire heat exchanger 10 and also reducing power consumption to achieve energy saving.

[0083] Figure 13a The structure shown is the basic structure of the heat exchanger 10. In the structural deformation of the heat exchanger 10, Figure 13aThe heat exchanger 10 is obtained by deforming, adding, and repeating the shown structure to have more flow paths for the heat exchange working medium, so that the heat exchange working medium can flow multiple times between the first collecting plate 1a and the second collecting plate 1b, thereby improving the heat exchange efficiency. It can be considered that Figure 3b the shown heat exchanger 10 is Figure 13a a structural example of the heat exchanger 10 after adding the heat exchange module 2.

[0084] Taking Figure 13b the structure of the heat exchanger 10 exemplified as an evaporator as a reference, Figure 14a a simplified schematic diagram of the cross-sectional structure of another heat exchanger 10 is shown. As Figure 14a shown, a partition 1112 is provided in the first collecting plate 1a to divide the internal space of the first collecting plate 1a into two first collecting chambers r1 arranged along a set direction, and a partition 1112 is provided in the second collecting plate 1b to divide the internal space of the second collecting plate 1b into two second collecting chambers r2 arranged along the set direction. The first collecting plate 1a has an opening K communicating with the right-side first collecting chamber r1, and the second collecting plate 1b has an opening K communicating with the left-side second collecting chamber r2. When the heat exchange working medium enters the right-side first collecting chamber r1 from the opening K on the right side of the first collecting plate 1a, it can flow through the cooling tubes 21 included in one heat exchange module 2 on the rightmost side to the second collecting chamber r2 on the right side of the second collecting plate 1b respectively. The heat exchange working medium in the second collecting chamber r2 on the right side can flow through the cooling tubes 21 included in the second and third heat exchange modules 2 on the right side to the first collecting chamber r1 on the left side. The heat exchange working medium in the first collecting chamber r1 on the left side can flow through the cooling tubes 21 included in the two heat exchange modules 2 on the left side to the second collecting chamber r2 on the left side, and finally flow out through the opening K on the left side of the second collecting plate 1b. In this heat exchanger 10, the heat exchange working medium flows through three processes in the heat exchanger 10. Exemplarily, the flow directions of the heat exchange working medium in the cooling tubes 21 included in the three heat exchange modules 2 on the left side are the same, and it can be considered that the cooling tubes 21 included in these three heat exchange modules 2 respectively form three parallel flow channels. The flow direction of the heat exchange working medium in the cooling tubes 21 included in the three heat exchange modules 2 on the left side is opposite to the flow direction of the heat exchange working medium in the cooling tubes 21 included in the two heat exchange modules 2 on the right side, and the heat exchange working medium can turn in the second collecting chamber r2. It can be considered that the flow channels formed by the three heat exchange modules 2 on the left side are in series with the flow channels formed by the two heat exchange modules 2 on the right side, and can supply the heat exchange working medium to achieve a series process. The parallel connection mode of the cooling tubes 21 included in the three heat exchange modules 2 on the left side can supply the heat exchange working medium to achieve a parallel process.

[0085] Taking Figure 13b the structure of the heat exchanger 10 exemplified as an evaporator heat exchanger as a reference, Figure 14b a simplified schematic diagram of the cross-sectional structure of yet another heat exchanger 10 is shown. As Figure 14bAs shown, two partition plates 1112 are provided inside the first collecting plate 1a to divide the internal space of the first collecting plate 1a into three first collecting chambers r1 arranged in a set direction. A partition plate 1112 is provided inside the second collecting plate 1b to divide the internal space of the second collecting plate 1b into two second collecting chambers r2 arranged in a set direction. The first collecting plate 1a has an opening K communicating with the rightmost first collecting chamber r1 and an opening K communicating with the leftmost first collecting chamber r1. When the heat exchange working fluid enters the rightmost first collecting chamber r1 from the opening K on the right side of the first collecting plate 1a, it can flow through the cooling tube 21 included in the rightmost heat exchange module 2 to the second collecting chamber r2 on the right side of the second collecting plate 1b. The heat exchange working fluid in the second collecting chamber r2 on the right side can flow through the cooling tube 21 included in the second heat exchange module 2 on the right side to the first collecting chamber r1 in the middle of the first collecting plate 1a, and flow through the cooling tube 21 included in the third heat exchange module 2 on the right side to the second collecting chamber r2 on the left side of the second collecting plate 1b. The heat exchange working fluid in the second collecting chamber r2 on the left side of the second collecting plate 1b can flow through the cooling tubes 21 included in the two leftmost heat exchange modules 2 to the first collecting chamber r1 on the left side of the first collecting plate 1a, and finally flow out through the opening K on the left side of the first collecting plate 1a. In this heat exchanger 10, the flow channels formed by the four heat exchange modules 2 on the right side are in series, and can supply the heat exchange working fluid to achieve a series process. The parallel connection mode of the cooling tubes 21 included in the two leftmost heat exchange modules 2 can supply the heat exchange working fluid to achieve a parallel process.

[0086] Refer to together Figure 13a 、 Figure 13b and Figure 14a 、 Figure 14b The heat exchanger 10 shown in the example is used to design the structures of the two collecting plates 1 of the heat exchanger 10, so that at least one Figure 13a The connection mode shown is formed between the collecting chambers of the two collecting plates 1 and the multiple heat exchange modules 2, so that the flow passage formed by the heat exchanger 10 can supply the heat exchange working fluid to achieve at least two processes. Different processes can be in series form, parallel mode, or a mixed series-parallel mode. It should be understood that Figure 14a and Figure 14b are also the working principles of the evaporator. When Figure 14a and Figure 14b The structure shown is applied as a condenser, the flow direction of the heat exchange working fluid and the direction of the incoming and outgoing air can be referred to Figure 13c shown, and its working principle can be referred to Figure 13c shown in the embodiment, which will not be elaborated here.

[0087] In order to indicate the flow direction of the heat exchange working fluid, Figure 13a 、 Figure 13b 、 Figure 13c and Figure 14a 、 Figure 14bThe heat exchange fins 22 included in the heat exchange module 2 in the illustrated heat exchanger 10 are not shown. Specifically, the heat exchange fins 22 included in the two heat exchange modules 2 may be the same or different. Selecting heat exchange fins 22 with different air resistances can reduce the air resistance of the entire heat exchanger 10, saving energy and increasing efficiency. Exemplarily, the heat exchange module 2 near the air inlet surface of the heat exchanger 10 is selected with heat exchange fins 22 having a lower air resistance, and the heat exchange module 2 near the air outlet surface of the heat exchanger 10 is selected with heat exchange fins 22 having a higher air resistance. The air inlet surface of the heat exchanger 10 is the outflow side of the heat exchange working medium, and the air outlet surface of the heat exchanger 10 is the inflow side of the heat exchange working medium. The heat exchange working medium enters the heat exchanger 10 from the air outlet surface of the heat exchanger 10. The heat exchange working medium has a strong ability to exchange heat with the environment through the heat exchange module 2. The heat exchange fins 22 with a high air resistance can accelerate the heat exchange rate, enabling the heat exchange working medium to fully exchange heat with the ambient air and enhancing the heat exchange effect. When the heat exchange working medium flows through the heat exchanger 10 to the air inlet surface, the heat exchange working medium has a weak ability to exchange heat with the environment through the heat exchange module 2. The heat exchange fins 22 with a low air resistance can reduce the air resistance of the entire heat exchanger 10, achieving energy conservation and not affecting the heat exchange effect of the entire heat exchanger 10 at the same time. Exemplarily, the heat exchange fins 22 included in the heat exchange module 2 on the air inlet side of the heat exchanger 10 are staggered fins, and the heat exchange fins 22 included in the heat exchange module 2 on the air outlet side are louver fins. Taking an air conditioner as an example, by using the heat exchanger 10 provided in the embodiment of the present application, the fan duty ratio can be downshifted, and the coefficient of performance (COP) can be increased.

[0088] In summary, the heat exchanger 10 provided in the embodiment of the present application is a heat exchanger in a multi-module combination form. The heat exchange module 2 can be manufactured as the smallest unit structure, and then designed and assembled according to different application scenarios of the heat exchanger 10, improving the development and manufacturing efficiency and reducing the manufacturing cost. In a specific implementation, different heat exchange modules 2 can be combined between the two collecting plates 1 to form a complete heat exchanger 10. The cooling pipes 21 and the heat exchange fins 22 of different heat exchange modules 22 can adopt different specifications to adapt to the heat exchange characteristics of different scenarios and different processes.

[0089] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A heat exchanger, characterized in that, it includes: a first collecting plate, a second collecting plate, and a plurality of heat exchange modules. The first collecting plate and the second collecting plate are arranged opposite to each other, and the plurality of heat exchange modules are arranged at intervals between the first collecting plate and the second collecting plate; each heat exchange module includes at least one cooling tube and heat exchange fins arranged on the outer surface of the cooling tube, and at least two of the plurality of heat exchange modules include different heat exchange fins; the first collecting plate includes at least two first collecting cavities, and the second collecting plate includes at least one second collecting cavity; wherein, any two adjacent first collecting cavities are isolated from each other and are respectively communicated with the same second collecting cavity through the cooling tubes included in the first heat exchange module and the cooling tubes included in the second heat exchange module.

2. The heat exchanger according to claim 1, characterized in that, the first collecting plate includes a housing and a partition arranged inside the housing; the housing has a receiving cavity, and the partition isolates the receiving cavity to form at least two first collecting cavities.

3. The heat exchanger according to claim 2, characterized in that, the housing includes a bottom shell and a top cover. The bottom shell has an opening facing the plurality of heat exchange modules, and the top cover is fixed to the housing and covers the opening to form the receiving cavity; the top cover has a diversion hole for communicating the cooling tube with the receiving cavity.

4. The heat exchanger according to any one of claims 1-3, characterized in that, the plurality of heat exchange modules are arranged at intervals along a set direction, and the set direction is the air inlet and outlet direction of the heat exchanger; along the set direction, the air resistance of the heat exchange fins in the heat exchange modules on the air inlet side of the heat exchanger is less than the air resistance of the heat exchange fins in the heat exchange modules on the air outlet side of the heat exchanger.

5. The heat exchanger according to any one of claims 1-4, characterized in that, each cooling tube includes at least one flow channel, and both ends of each flow channel are respectively communicated with the first collecting cavity and the second collecting cavity.

6. The heat exchanger according to any one of claims 1-5, characterized in that, each heat exchange module includes a plurality of the cooling tubes, and the plurality of cooling tubes are arranged at intervals; heat exchange fins are arranged between any two adjacent cooling tubes.

7. The heat exchanger according to any one of claims 1-6, characterized in that, each heat exchange module further includes two protective covers. The plurality of cooling tubes are located between the two protective covers, and the protective covers are fixedly connected to the cooling tubes through the heat exchange fins.

8. The heat exchanger according to claim 7, characterized in that, along the extending direction of the cooling tube, the length of the protective cover is less than the length of the cooling tube.

9. The heat exchanger according to claim 7 or 8, characterized in that, at least one end of each of the two ends of the protective cover along the extending direction of the cooling tube is provided with a bent portion bent towards the cooling tube side.

10. The heat exchanger according to any one of claims 7-9, characterized in that, At least one of the protective cover plates is shared between two adjacent heat exchange modules.

11. The heat exchanger according to any one of claims 1-10, characterized in that the heat exchange fin structures included in at least two adjacent heat exchange modules are the same and connected.

12. The heat exchanger according to any one of claims 1-11, characterized in that the first collecting plate includes a strengthening structure disposed in the first collecting cavity; and / or, the second collecting plate includes a strengthening structure disposed in the second collecting cavity.

13. A heat exchange system, characterized in that it includes a device to be heat-exchanged and the heat exchanger according to any one of claims 1-12, the heat exchanger and the device to be heat-exchanged are connected by pipelines, and the pipelines are used for the heat exchange working medium to flow between the device to be heat-exchanged and the heat exchanger.

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