Heat exchange device for air conditioner
By designing a heat exchange device for air conditioners, the heating or cooling effects in the opposite direction of the first and second parts of the heat pipes are solved, and the problems of high energy consumption and high operating costs of central air conditioners during heat exchange requirements in different seasons are achieved, and more efficient heat exchange effects and lower energy consumption are achieved.
Patent Information
- Application Number
- CN202411983148.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-02-25
AI Technical Summary
When facing the heat exchange demand in different seasons, central air conditioners have problems of high energy consumption and high operating costs, especially in summer and winter, requiring additional heat sources for heating or cooling, which increases energy consumption.
A heat exchange device for air conditioning is designed, including a shell member, a surface cooler, a plurality of heat pipes, a first set of heat exchange fins and a second set of heat exchange fins. The first and second parts of the heat pipe are arranged upstream and downstream of the surface cooler in the direction of air flow, and use the heating or cooling effect in the opposite direction of the heat pipe to adapt to the heat exchange needs in different seasons.
By utilizing the heating or cooling effects in the opposite direction of the first and second parts of the heat pipe, the heat exchange needs in different seasons are effectively addressed, the energy consumption and operating costs of the air conditioner are reduced, and the risk of surface coolers being frozen and cracked under low temperature conditions is avoided.
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Figure CN119509029A_ABST
Abstract
Description
Technical Field
[0001] The embodiments of the present application relate to the field of heat exchange technology, and in particular to a heat exchange device for air conditioning. Background Art
[0002] This section of content merely provides background information related to the present application and does not necessarily constitute prior art.
[0003] Central air conditioners are widely used as air conditioning equipment that can adjust the temperature and humidity of indoor air. However, there are still many problems with central air conditioners when facing the heat exchange requirements of different seasons. Summary of the invention
[0004] A brief overview of the present application is provided below in order to provide a basic understanding of certain aspects of the present application. It should be understood that this overview is not an exhaustive overview of the present application. It is not intended to identify the key or important parts of the present application, nor is it intended to limit the scope of the present application. Its purpose is merely to present certain concepts in a simplified form as a prelude to a more detailed description discussed later.
[0005] To solve the above technical problems, an embodiment of the present application provides a heat exchange device for an air conditioner, which may include a shell, a surface cooler, a plurality of heat pipes, a first group of heat exchange fins and a second group of heat exchange fins. The shell forms a storage space for air circulation. The surface cooler includes a heat exchange tube for heat exchange medium flow and a plurality of cooler heat exchange fins thermally connected to the heat exchange tube, wherein the heat exchange tube is arranged in the shell, and the cooler heat exchange fin is arranged in the storage space for heat exchange with the air flowing through its surface. Each heat pipe includes a first part, a second part and a third part connecting the first part and the second part, wherein the first part and the second part are respectively arranged upstream and downstream of the surface cooler along the air flow direction. The first group of heat exchange fins and the second group of heat exchange fins are arranged in the storage space, the first group of heat exchange fins and the second group of heat exchange fins are respectively arranged upstream and downstream of the surface cooler along the air flow direction, the first part of each heat pipe is thermally connected to the first group of heat exchange fins, and the second part of each heat pipe is thermally connected to the second group of heat exchange fins.
[0006] The heat exchange device of the embodiment of the present application arranges the first part and the second part of the heat pipe upstream and downstream of the surface cooler respectively along the air flow direction. Since the working fluid in the first part of the heat pipe will flow through the second part of the heat pipe after heat exchange with the air, the first part of the heat pipe can be used to cool or heat the air before passing through the surface cooler, and the second part of the heat pipe can be used to heat or cool the air after passing through the surface cooler.
[0007] The heat exchange device of the embodiment of the present application can effectively cope with the heat exchange needs in different seasons and is helpful in reducing the energy consumption of air conditioning. Specifically, in summer, when air with a higher temperature flows through the first group of heat exchange fins, the lower temperature working medium in the first part of the heat pipe can be used to exchange heat with the high-temperature air to pre-cool the air. The working medium in the first part absorbs heat and flows to the second part of the heat pipe. At the same time, the air flows through the surface cooler and is further cooled to a dehumidification temperature. Then, when flowing through the second group of heat exchange fins, the higher temperature working medium in the second part of the heat pipe exchanges heat with the low-temperature air to reheat the low-temperature air, thereby eliminating the need to set up an additional heat source to reheat the low-temperature air, reducing energy consumption and operating costs; in winter, when air with a lower temperature flows through the first group of heat exchange fins, the higher temperature working medium in the first part of the heat pipe can be used to exchange heat with the low-temperature air to pre-heat the air. The working medium in the first part releases heat and flows to the second part of the heat pipe. At the same time, the air is further heated after flowing through the surface cooler. Then, when flowing through the second group of heat exchange fins, the lower temperature working medium in the second part of the heat pipe exchanges heat with the high-temperature air to cool the high-temperature air, thereby reducing the air temperature to a suitable supply air temperature. Since the low-temperature air is preheated by the working medium of the first part of the heat pipe before flowing through the surface cooler, it is helpful to prevent the surface cooler from being affected by the low-temperature air and being frozen and cracked.
[0008] These and other advantages of the present application will become more apparent through the following detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] In order to further illustrate the above and other advantages and features of the present application, the specific embodiments of the present application are further described in detail below in conjunction with the accompanying drawings. The accompanying drawings together with the following detailed description are included in this specification and form a part of this specification. Elements with the same function and structure are represented by the same reference numerals. It should be understood that these drawings only describe typical examples of the present application and should not be regarded as limiting the scope of the present application.
[0010] Figure 1 is a schematic diagram of a heat exchange device for an air conditioner according to an embodiment of the present application observed from one angle;
[0011] Figure 2 is a schematic diagram of a heat exchange device for an air conditioner according to an embodiment of the present application observed from another angle;
[0012] Figure 3 is a schematic diagram of a heat exchange device for air conditioning according to an embodiment of the present application from another angle;
[0013] Figure 4 is a schematic diagram of a heat exchange device for an air conditioner according to an embodiment of the present application from another angle, wherein a side plate of the shell is omitted;
[0014] Figure 5 It is a schematic diagram of the structure of a heat pipe according to an embodiment of the present application.
[0015] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.
[0016] Description of reference numerals:
[0017] 10. Shell; 101. Air inlet; 102. Air outlet; 11. Top plate; 12. Bottom plate; 13. Side plate;
[0018] 20. Surface cooler; 21. Liquid inlet and outlet pipes; 22. Heat exchange tubes; 23. Cooler heat exchange fins;
[0019] 30. heat pipe; 31. first part; 311. first pipe section; 312. second pipe section; 313. first connecting section; 32. second part; 321. third pipe section; 322. fourth pipe section; 323. second connecting section; 33. third part; 331. third connecting section; 332. fourth connecting section; 41. first heat exchange fin; 42. second heat exchange fin. DETAILED DESCRIPTION
[0020] Exemplary embodiments of the present application will be described below in conjunction with the accompanying drawings. For the sake of clarity and conciseness, not all features of the actual implementation are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the process of developing any such actual implementation in order to achieve the developer's specific goals, such as meeting those constraints related to the system and business, and these constraints may vary from implementation to implementation. In addition, it should be understood that although the development work may be very complex and time-consuming, it is only a routine task for those skilled in the art who benefit from the content of this application.
[0021] It is also necessary to explain here that, in order to avoid obscuring the present application due to unnecessary details, only the device structure and / or processing steps closely related to the scheme according to the present application are shown in the accompanying drawings, while other details that are not very relevant to the present application are omitted.
[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in this application should have the common meanings understood by persons with ordinary skills in the field to which this application belongs.
[0023] In the description of the embodiments of the present application, “plurality” means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0024] Central air conditioning is usually used to adjust the indoor temperature in summer and winter. In summer, the temperature and humidity of fresh air are relatively high. In order to achieve the required supply air temperature and humidity, a surface cooler is usually used to perform low-temperature cooling and dehumidification of the air. The dehumidified air is then heated again by an additional heat source to make the air reach the required supply air temperature and humidity, which results in high energy consumption of the air conditioner. In winter in the north, the temperature of fresh air is more than ten degrees below zero. In order to achieve the required supply air temperature, the surface cooler is used to heat the air by passing hot water into the surface cooler. The inventors of the present application have found that due to the extremely low temperature of the fresh air, the temperature difference between the heat medium and the low-temperature air is too large, which can easily lead to freezing and cracking accidents of the surface cooler.
[0025] In order to solve the above technical problems, the embodiment of the present application provides a heat exchange device for air conditioning, see Figures 1 to 4 , Figures 1 to 4 The schematic diagrams are respectively observed from different angles of a heat exchange device for air conditioning according to an embodiment of the present application, and the direction of A1 in the figure represents the direction of air flow. The heat exchange device provided in the embodiment of the present application may include a shell 10, a surface cooler 20, a plurality of heat pipes 30, a first group of heat exchange fins and a second group of heat exchange fins. The shell 10 forms a accommodating space for air circulation. The surface cooler 20 includes a heat exchange tube 22 for the flow of a heat exchange medium and a plurality of cooler heat exchange fins 23 thermally connected to the heat exchange tube 22. The heat exchange tube 22 is passed through the shell 10. The cooler heat exchange fin 23 is arranged in the accommodating space for exchanging heat with the air flowing through its surface.
[0026] Each heat pipe 30 may include a first portion 31, a second portion 32, and a third portion 33 connecting the first portion 31 and the second portion 32, wherein the first portion 31 and the second portion 32 are respectively arranged upstream and downstream of the surface cooler 20 along the air flow direction (i.e., direction A1 in the figure). A first group of heat exchange fins and a second group of heat exchange fins are arranged in the accommodation space, and the first group of heat exchange fins and the second group of heat exchange fins are respectively arranged upstream and downstream of the surface cooler 20 along the air flow direction, and the first portion 31 of each heat pipe 30 is thermally connected to the first group of heat exchange fins, and the second portion 32 of each heat pipe 30 is thermally connected to the second group of heat exchange fins.
[0027] In the heat exchange device of the embodiment of the present application, the first part 31 and the second part 32 of the heat pipe 30 are respectively arranged upstream and downstream of the surface cooler 20 along the air flow direction. Since the working fluid in the first part 31 of the heat pipe 30 will flow through the second part 32 of the heat pipe 30 after heat exchange with the air, the first part 31 of the heat pipe 30 can be used to cool or heat the air before passing through the surface cooler 20, and the second part 32 of the heat pipe 30 can be used to heat or cool the air after passing through the surface cooler 20.
[0028] In this way, the opposite heating or cooling effects of the first part 31 and the second part 32 of the heat pipe 30 can be utilized to effectively meet the heat exchange requirements of different seasons and help reduce the energy consumption of the air conditioner. Specifically, when the inlet air temperature is high in summer, the working fluid of the first part 31 of the heat pipe 30 is used to exchange heat with the high-temperature air to pre-cool the air. The working fluid of the first part 31 absorbs heat and flows to the second part 32 of the heat pipe 30. The air is further cooled after passing through the surface cooler 20, and the air temperature drops to a lower temperature. At this time, the working fluid of the second part 32 in the heat pipe 30 is used to exchange heat with the low-temperature air to increase the temperature of the air and make the air temperature reach a suitable air supply temperature without setting up an additional heat source to reheat the low-temperature air, thereby reducing energy consumption and operating costs. When the inlet air temperature is low in winter, the working fluid in the first part 31 of the heat pipe 30 is used to exchange heat with the low-temperature air to preheat the air. The working fluid in the first part 31 releases heat and flows to the second part 32 of the heat pipe 30. The air is further heated after passing through the surface cooler 20, and the air temperature rises to a higher temperature. Then, the working fluid in the second part 32 of the heat pipe 30 is used to exchange heat with the high-temperature air to cool the high-temperature air and reduce the air temperature to a suitable air supply temperature. Since the low-temperature air is preheated by the working fluid in the first part 31 of the heat pipe 30 before flowing through the surface cooler 20, it is helpful to prevent the surface cooler 20 from being affected by the low-temperature air and being frozen and cracked.
[0029] Since the process of the heat pipe 30 regulating the temperature of the air flowing before and after the surface cooler 20 is passive, the heat exchange device of the embodiment of the present application is safe and reliable and can be used in nuclear-grade air conditioners in nuclear power plants.
[0030] In some embodiments, each heat pipe 30 is disposed through the shell 10. The plurality of heat pipes 30 are stacked in a vertical direction perpendicular to the air flow direction (see direction A2 in the figure). Since each heat pipe 30 is thermally connected to the first set of heat exchange fins and the second set of heat exchange fins, the stacking of the plurality of heat pipes 30 in a vertical direction perpendicular to the air flow direction is conducive to increasing the number of heat pipes 30 while reducing the occupied space, thereby improving the heat exchange effect between the heat pipes 30 and the air.
[0031] In some embodiments, the first portion 31 and the second portion 32 of each heat pipe 30 are disposed in the shell 10, and the third portion 33 of each heat pipe 30 is connected to the first portion 31 and the second portion 32 outside the shell 10; the first group of heat exchange fins and the second group of heat exchange fins are respectively connected to the pipe sections of the first portion 31 and the second portion 32 located in the accommodation space. Providing the third portion 33 outside the shell 10 is more conducive to increasing the number of heat exchange fins arranged in the shell 10, thereby improving the heat exchange effect.
[0032] See also Figure 5 , Figure 53 is a schematic diagram of the structure of a heat pipe 30 according to an embodiment of the present application. In some embodiments, the first portion 31, the second portion 32 and the third portion 33 can form a U-shaped structure together. By forming a U-shaped structure, the first portion 31 and the second portion 32 of the heat pipe 30 can be respectively arranged upstream and downstream of the surface cooler 20 along the air flow direction, so as to effectively meet the heat exchange requirements in different seasons.
[0033] In some embodiments, the first portion 31 may include a first pipe segment 311, a second pipe segment 312, and a first connecting segment 313. The first pipe segment 311 and the second pipe segment 312 extend in a horizontal direction (see direction A3 in the figure) perpendicular to the air flow direction; the first connecting segment 313 connects the first pipe segment 311 and the second pipe segment 312 on a side opposite to the third portion 33.
[0034] The second portion 32 may include a third pipe segment 321, a fourth pipe segment 322, and a second connecting segment 323. The third pipe segment 321 and the fourth pipe segment 322 extend in a horizontal direction perpendicular to the air flow direction, and the second connecting segment 323 connects the third pipe segment 321 and the fourth pipe segment 322 on a side opposite to the third portion 33.
[0035] The third portion 33 may include a third connecting segment 331 and a fourth connecting segment 332. The third connecting segment 331 is used to connect the first pipe segment 311 and the third pipe segment 321, and the fourth connecting segment 332 is used to connect the second pipe segment 312 and the fourth pipe segment 322, so that the heat pipe 30 can form a closed loop for the circulation of the working medium in the heat supply pipe 30. This arrangement is conducive to accelerating the circulation rate of the working medium in the heat pipe 30 after absorbing or releasing heat, thereby facilitating the improvement of the heat exchange efficiency between the first portion 31 and the second portion 32 of the heat pipe 30.
[0036] In some embodiments, the first pipe segment 311, the second pipe segment 312, the third pipe segment 321, and the fourth pipe segment 322 are arranged in parallel to maximize the number of heat pipes 30 while reducing the space occupied by all heat pipes 30 in the shell 10, which is conducive to making the overall structure of the heat exchange device compact.
[0037] In some embodiments, the first pipe segment 311, the second pipe segment 312, the third pipe segment 321, and the fourth pipe segment 322 are all penetrated through the shell 10, and both ends of the first pipe segment 311, the second pipe segment 312, the third pipe segment 321, and the fourth pipe segment 322 extend to the outside of the shell 10, so that the first connecting segment 313, the second connecting segment 323, the third connecting segment 331, and the fourth connecting segment 332 are respectively arranged on the outside of the shell 10.
[0038] In some embodiments, there is a gap between the first group of heat exchange fins, the second group of heat exchange fins and the cooler heat exchange fins 23 to prevent the heat pipe 30, the first group of heat exchange fins and the second group of heat exchange fins from interfering with the surface cooler 20, while also facilitating air to flow through the first group of heat exchange fins, the cooler heat exchange fins 23 and the second group of heat exchange fins in sequence.
[0039] In some embodiments, the heat pipe 30 may include an integrated closed tube shell and a phase-changeable working medium filled in the closed tube shell. The tube shell may be welded by a first tube segment 311, a second tube segment 312, a third tube segment 321, a fourth tube segment 322, a first connecting segment 313, a second connecting segment 323, a third connecting segment 331 and a fourth connecting segment 332. When the inlet air temperature is high in summer, the liquid working medium of the first part 31 of the heat pipe 30 absorbs the heat of the air and is converted into a gaseous working medium to pre-cool the air, and the gaseous working medium of the second part 32 of the heat pipe 30 releases heat and is converted into a liquid working medium to reheat the air; when the inlet air temperature is low in winter, the gaseous working medium of the first part 31 of the heat pipe 30 releases heat and is converted into a liquid working medium to preheat the air, and the liquid working medium of the second part 32 of the heat pipe 30 absorbs heat and is converted into a gaseous working medium to cool the air, thereby facilitating the first part 31 and the second part 32 of the heat pipe 30 to achieve opposite heating or cooling effects to meet the heat exchange requirements of different seasons.
[0040] In some embodiments, the heat pipe 30 may be a gravity-type heat pipe.
[0041] In some embodiments, the second pipe segment 312 is arranged closer to the surface cooler 20 relative to the first pipe segment 311. The third pipe segment 321 is arranged closer to the surface cooler 20 relative to the fourth pipe segment 322. The heights of the first pipe segment 311, the second pipe segment 312, the third pipe segment 321 and the fourth pipe segment 322 in the vertical direction decrease in sequence. The third connecting segment 331 and the fourth connecting segment 332 extend obliquely. In the embodiment of the present application, a height difference is formed between the first pipe segment 311, the second pipe segment 312, the third pipe segment 321 and the fourth pipe segment 322, and the third connecting segment 331 and the fourth connecting segment 332 extend obliquely, which is conducive to the circulation of the working medium in the heat pipe 30.
[0042] In some embodiments, the first connecting section 313 is higher in the vertical direction than the second connecting section 323; the third connecting section 331 is above the fourth connecting section 332. With such an arrangement, after the first pipe section 311, the second pipe section 312, the third pipe section 321 and the fourth pipe section 322 exchange heat with the air, whether the working medium changes from liquid to gas (the heat pipe 30 precools the air) or from gas to liquid (the heat pipe 30 preheats the air), it is conducive to the circulation of the working medium in the heat pipe 30.
[0043] In other embodiments, the first pipe segment 311 is higher than the second pipe segment 312 in the vertical direction, the third pipe segment 321 is higher than the fourth pipe segment 322 in the vertical direction, and the fourth pipe segment 322 is higher than the first pipe segment 311 in the vertical direction; the first connecting segment 313 is lower than the second connecting segment 323 in the vertical direction; and the third connecting segment 331 is above the fourth connecting segment 332.
[0044] In other embodiments, the heights of the first pipe segment 311 , the second pipe segment 312 , the third pipe segment 321 and the fourth pipe segment 322 increase in sequence along the vertical direction; the height of the first connecting segment 313 along the vertical direction is lower than that of the second connecting segment 323 , and the third connecting segment 331 is below the fourth connecting segment 332 .
[0045] In other embodiments, the first pipe segment 311 is lower than the second pipe segment 312 in the vertical direction, the third pipe segment 321 is lower than the fourth pipe segment 322 in the vertical direction, the first pipe segment 311 is higher than the fourth pipe segment 322 in the vertical direction, the first connecting segment 313 is higher than the second connecting segment 323 in the vertical direction, and the third connecting segment 331 is below the fourth connecting segment 332.
[0046] In the above embodiments, the projections of the first pipe section 311, the second pipe section 312, the third pipe section 321 and the fourth pipe section 322 in the horizontal plane do not overlap, and the first connecting section 313, the second connecting section 323, the third connecting section 331 and the fourth connecting section 332 all extend obliquely. After the first pipe section 311, the second pipe section 312, the third pipe section 321 and the fourth pipe section 322 exchange heat with the air, whether the working medium changes from liquid to gas (the heat pipe 30 precools the air) or from gas to liquid (the heat pipe 30 preheats the air), it is conducive to the circulation of the working medium in the heat pipe 30.
[0047] In some embodiments, the first connecting section 313 and the second connecting section 323 are elbows. The elbows can change the flow direction of the working medium and reduce the flow resistance of the working medium, thereby facilitating the circulation of the working medium in the heat pipe 30.
[0048] See also Figure 1 In some embodiments, the surface cooler 20 may further include two inlet and outlet liquid pipes 21, which are disposed outside the shell 10, and the heat exchange tube 22 is connected to the two inlet and outlet liquid pipes 21. The heat exchange medium can enter the heat exchange tube 22 through one inlet and outlet liquid pipe 21 and then flow out from the other inlet and outlet liquid pipe 21. Since the two inlet and outlet liquid pipes 21 are both disposed outside the shell 10, they do not occupy the internal accommodation space of the shell 10.
[0049] In some embodiments, a hot medium may be input into the inlet and outlet liquid pipes 21 so that the air can be heated when passing through the surface cooler 20. In other embodiments, a cold medium may be input into the inlet and outlet liquid pipes 21 so that the air can be cooled when passing through the surface cooler 20.
[0050] In some embodiments, the medium may be cold water, hot water or other refrigerants (such as fluorine).
[0051] See also Figure 4 In some embodiments, the first group of heat exchange fins may include a plurality of first heat exchange fins 41 spaced apart along a horizontal direction perpendicular to the air flow direction (see direction A3 in the figure, i.e., the extension direction of the first tube segment 311 and the second tube segment 312), and each first heat exchange fin 41 is in a plane parallel to the air flow direction. The second group of heat exchange fins may include a plurality of second heat exchange fins 42 spaced apart along a horizontal direction perpendicular to the air flow direction (see direction A3 in the figure, i.e., the extension direction of the third tube segment 321 and the fourth tube segment 322), and each second heat exchange fin 42 is in a plane parallel to the air flow direction. A plurality of cooler heat exchange fins 23 are spaced apart along a horizontal direction perpendicular to the air flow direction (see direction A3 in the figure), and each cooler heat exchange fin 23 is in a plane parallel to the air flow direction. Since each heat exchange fin is in a plane parallel to the air flow direction, it is beneficial to reduce the flow resistance of air when flowing through the heat exchange fins, increase the contact area between the air and the heat exchange fins, and thus improve the heat exchange efficiency.
[0052] In some embodiments, the heat pipe 30 and the first heat exchange fin 41 and the second heat exchange fin 42 are manufactured by a mechanical expansion integrated process. The heat exchange tube 22 and the cooler heat exchange fin 23 are manufactured by a mechanical expansion integrated process. The first heat exchange fin 41, the second heat exchange fin 42, and the cooler heat exchange fin 23 are made of the same material. In this embodiment, a mechanical expansion integrated process is used to uniformly manufacture the heat pipe 30 and the heat exchange fin, and the heat exchange tube 22 and the cooler heat exchange fin 23, and use the same material, thereby avoiding the problem of separate production and installation due to different materials, thereby reducing costs and simplifying the installation process.
[0053] See also Figure 1In some embodiments, the shell 10 may include a top plate 11, a bottom plate 12 and two side plates 13. The two side plates 13 are arranged oppositely along the extension direction of the first pipe segment 311. The bottom plate 12 and the top plate 11 are arranged oppositely along the stacking direction of the multiple heat pipes 30. The two side plates 13 are respectively connected to the bottom plate 12 and the top plate 11 on both sides to jointly enclose a storage space. The two ends of the first pipe segment 311, the second pipe segment 312, the third pipe segment 321, and the fourth pipe segment 322 pass through the two side plates 13 respectively. The first connecting section 313, the second connecting section 323, the third connecting section 331 and the fourth connecting section 332 are respectively connected to the corresponding pipe segments outside the storage space. In this embodiment, the storage space enclosed by the bottom plate 12, the top plate 11 and the two side plates 13 provides a flow space for air and a space for stacking the heat pipe 30, the heat exchange fins and the heat exchange tube 22. At the same time, passing the two ends of the first pipe segment 311, the second pipe segment 312, the third pipe segment 321, and the fourth pipe segment 322 through the two side plates 13 respectively is conducive to connecting the heat pipe 30, the heat exchange fins and the shell 10 as a whole, preventing the heat pipe 30 from loosening or falling off due to airflow impact or temperature changes during operation, and is conducive to a good thermal connection between the heat pipe 30 and the heat exchange fins.
[0054] In some embodiments, the bottom plate 12, the top plate 11 and the two side plates 13 respectively form an air inlet 101 for air to flow into the accommodation space and an air outlet 102 for air to flow out of the accommodation space along the flow direction of the airflow. This arrangement is conducive to the air flowing into and out of the accommodation space evenly along the airflow direction.
[0055] In some embodiments, the bottom plate 12 , the top plate 11 , and the two side plates 13 may be made of sheet metal.
[0056] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.
[0057] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A heat exchange device for air conditioning, characterized in that: include: A shell member, wherein the shell member forms a receiving space for air circulation; A surface cooler, the surface cooler comprising a heat exchange tube for a heat exchange medium to flow and a plurality of cooler heat exchange fins thermally connected to the heat exchange tube, wherein the heat exchange tube is passed through the shell, and the cooler heat exchange fins are arranged in the accommodation space for exchanging heat with air flowing through the surface thereof; A plurality of heat pipes, each of the heat pipes comprising a first portion, a second portion and a third portion connecting the first portion and the second portion, wherein the first portion and the second portion are respectively arranged upstream and downstream of the surface cooler along the air flow direction; A first group of heat exchange fins and a second group of heat exchange fins are arranged in the accommodating space, and the first group of heat exchange fins and the second group of heat exchange fins are respectively arranged upstream and downstream of the surface cooler along the air flow direction, and the first part of each heat pipe is thermally connected to the first group of heat exchange fins, and the second part of each heat pipe is thermally connected to the second group of heat exchange fins.
2. The heat exchange device according to claim 1, characterized in that: The plurality of heat pipes are stacked along a vertical direction perpendicular to the air flow direction.
3. The heat exchange device according to claim 1, characterized in that: The first part includes: a first pipe segment, a second pipe segment and a first connecting segment, the first pipe segment and the second pipe segment extend in a horizontal direction perpendicular to the air flow direction, and the first connecting segment connects the first pipe segment and the second pipe segment on a side opposite to the third part; The second part includes: a third pipe segment, a fourth pipe segment and a second connecting segment, the third pipe segment and the fourth pipe segment extend in a horizontal direction perpendicular to the air flow direction, and the second connecting segment connects the third pipe segment and the fourth pipe segment on a side opposite to the third part; The third part includes: a third connecting section and a fourth connecting section, the third connecting section is used to connect the first pipe section and the third pipe section, and the fourth connecting section is used to connect the second pipe section and the fourth pipe section, so that the heat pipe can form a closed loop for circulating the working medium in the heat pipe.
4. The heat exchange device according to claim 3, characterized in that: The heat pipe is a gravity type heat pipe; The second pipe section is arranged closer to the surface cooler than the first pipe section; The third pipe section is arranged closer to the surface cooler than the fourth pipe section; The heights of the first pipe segment, the second pipe segment, the third pipe segment and the fourth pipe segment decrease in sequence along the vertical direction; The third connecting section and the fourth connecting section extend obliquely.
5. The heat exchange device according to claim 4, characterized in that: The first connecting section has a height in the vertical direction higher than that of the second connecting section; The third connecting section is above the fourth connecting section.
6. The heat exchange device according to claim 4, characterized in that: The first connecting section and the second connecting section are elbows.
7. The heat exchange device according to claim 1, characterized in that: The surface cooler further comprises: two inlet and outlet liquid pipes, which are arranged outside the shell, and the heat exchange tube is connected to the two inlet and outlet liquid pipes; Wherein, the heat exchange medium can enter the heat exchange tube through one of the inlet and outlet liquid pipes and then flow out from another of the inlet and outlet liquid pipes.
8. The heat exchange device according to claim 1, characterized in that: The first group of heat exchange fins includes a plurality of first heat exchange fins spaced apart in a horizontal direction perpendicular to the air flow direction, and each of the first heat exchange fins is in a plane parallel to the air flow direction; The second group of heat exchange fins includes a plurality of second heat exchange fins spaced apart in a horizontal direction perpendicular to the air flow direction, and each of the second heat exchange fins is in a plane parallel to the air flow direction; The plurality of cooler heat exchange fins are arranged at intervals along a horizontal direction perpendicular to the air flow direction, and each of the cooler heat exchange fins is located in a plane parallel to the air flow direction.
9. The heat exchange device according to claim 8, characterized in that: The heat pipe, the first heat exchange fin, and the second heat exchange fin are manufactured by a mechanical tube expansion integrated process; The heat exchange tube and the heat exchange fin of the cooler are manufactured by an integrated mechanical tube expansion process; The first heat exchange fin, the second heat exchange fin, and the cooler heat exchange fin are made of the same material.
10. The heat exchange device according to claim 5, characterized in that: The shell comprises a bottom plate, a top plate and two side plates, The two side plates are arranged opposite to each other along the extension direction of the first pipe section; The bottom plate and the top plate are arranged opposite to each other along the stacking direction of the plurality of heat pipes; The two side plates are respectively connected to the bottom plate and the top plate at two sides to jointly enclose the accommodation space; Two ends of the first pipe segment, the second pipe segment, the third pipe segment, and the fourth pipe segment pass through the two side plates respectively; The first connecting section, the second connecting section, the third connecting section and the fourth connecting section are respectively connected to corresponding pipe sections outside the accommodating space.