Heat exchange device and electrical cabinet with same

Abstract

The utility model provides a heat exchange device and an electrical cabinet with the same, the heat exchange device comprises a shell, the shell is provided with a cavity, the cavity is internally provided with an internal circulation air duct and an external circulation air duct which are oppositely arranged, the internal circulation air duct is provided with an internal circulation air inlet and an internal circulation air outlet, and the external circulation air duct is provided with an external circulation air outlet; the internal circulation air inlet and the internal circulation air outlet are used for being communicated with an electrical cabinet, the external circulation air duct is provided with an external circulation air inlet and an external circulation air outlet, and the external circulation air inlet and the external circulation air outlet are used for being communicated with the external environment; the heat exchange part is provided with a first heat exchange channel and a second heat exchange channel which are independent of each other, the first heat exchange channel communicates with the inner circulation air duct, the second heat exchange channel communicates with the outer circulation air duct, and the heat exchange part conducts heat exchange on the inner circulation air duct and the outer circulation air duct through the first heat exchange channel and the second heat exchange channel. According to the technical scheme, the problem that in the prior art, an air heat exchange device is poor in heat exchange effect can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchange equipment, and in particular, to a heat exchange device and an electrical cabinet having the same. Background Art

[0002] With the continuous development of power electronics technology, the application of products in harsh environments has gradually increased. At the product design end, the development of high-protection cabinets has become increasingly urgent. In the development of previous equipment cabinets, aluminum foil cores were mostly used. Due to their simple process and principle, they were widely used in electrical cabinet products.

[0003] However, with the continuous improvement of the product power level, the size of the cabinet is getting smaller and smaller. Due to the very complex structure and large volume of the aluminum foil core, it is not only difficult to clean, but also the cost of repairing and replacing parts is relatively high. And the heat exchange efficiency is low. Therefore, the aluminum foil core can no longer meet some high-requirement heat exchange occasions at present. Summary of the Utility Model

[0004] The utility model provides a heat exchange device and an electrical cabinet having the same to solve the problem of poor heat exchange effect of the existing air heat exchange device.

[0005] According to one aspect of the utility model, a heat exchange device is provided. The heat exchange device includes: a housing having a cavity therein, with an inner circulation air duct and an outer circulation air duct disposed opposite to each other in the cavity. The inner circulation air duct has an inner circulation air inlet and an inner circulation air outlet, and the inner circulation air inlet and the inner circulation air outlet are used for communicating with an electrical cabinet group. The outer circulation air duct has an outer circulation air inlet and an outer circulation air outlet, and the outer circulation air inlet and the outer circulation air outlet are used for communicating with the external environment; a heat exchange part having mutually independent first and second heat exchange channels. The first heat exchange channel is communicated with the inner circulation air duct, and the second heat exchange channel is communicated with the outer circulation air duct. The heat exchange part performs heat exchange between the inner circulation air duct and the outer circulation air duct through the first and second heat exchange channels; an inner circulation fan and an outer circulation fan, with the inner circulation fan disposed in the inner circulation air duct and the outer circulation fan disposed in the outer circulation air duct.

[0006] Further, the extending direction of the middle part of the inner circulation air duct is the same as that of the outer circulation air duct, and a part of the inner circulation air duct penetrates through the outer circulation air duct.

[0007] Further, one side of the inner circulation air duct close to the inner circulation air inlet penetrates through the outer circulation air duct and forms a first intersection. The heat exchange part is located at the first intersection, the first heat exchange channel is located on the inner circulation air duct, and the second heat exchange channel is located on the outer circulation air duct.

[0008] Further, one side of the inner circulation air duct close to the inner circulation air outlet penetrates through the outer circulation air duct and forms a second intersection. The inner circulation fan is located at the second intersection. The outer circulation air outlet is located at one end of the outer circulation air duct close to the inner circulation air inlet, and the outer circulation fan is located at the outer circulation air outlet.

[0009] Further, the housing includes an outer peripheral plate, a partition plate, and a cover plate. The top of the outer peripheral plate has an opening, and the cover plate is covered at the opening. The cover plate has an outer circulation air outlet. The partition plate is located inside the outer peripheral plate. The outer peripheral plate and the partition plate cooperate to form an inner circulation air duct and an outer circulation air duct. The outer circulation air duct is arranged close to the bottom of the outer peripheral plate. The outer circulation air inlet and the inner circulation air outlet are located on the same side of the outer peripheral plate. The inner circulation air inlet and the inner circulation air outlet are respectively located at the bottom of the outer peripheral plate, and the outer circulation air inlet is located on the side wall of the outer peripheral plate.

[0010] According to another aspect of the present invention, an electrical cabinet is provided. The electrical cabinet has the above heat exchange device. The electrical cabinet has a receiving cavity for placing electrical components. The inner circulation air inlet and the inner circulation air outlet of the heat exchange device are respectively communicated with the receiving cavity.

[0011] Further, the receiving cavity includes a first chamber and a second chamber. The inner circulation air outlet is communicated with the first chamber, the inner circulation air inlet is communicated with the second chamber, and the first chamber is communicated with the second chamber.

[0012] Further, the electrical mechanism includes a first cabinet body and a second cabinet body. The first cabinet body and the second cabinet body are arranged side by side. The first cabinet body has a first chamber, the second cabinet body has a second chamber. Both the first cabinet body and the second cabinet body have communication ports, and the first cabinet body and the second cabinet body are communicated through the communication ports.

[0013] Further, the electrical cabinet further includes a circulation fan, and the circulation fan is arranged at the communication port of the first cabinet body or the second cabinet body.

[0014] Further, the electrical cabinet includes a cabinet body with a receiving cavity. A baffle is arranged inside the cabinet body, and the baffle divides the receiving cavity into a first chamber and a second chamber.

[0015] Applying the technical solution of the present utility model, by arranging an internal circulation fan and an external circulation fan inside the housing, kinetic energy is provided for the air, driving the air to flow between the electrical cabinet, the heat exchange device and the outside, and forming an internal circulation air duct and an external circulation air duct in the heat exchange device to accelerate the air flow for dissipating heat from the electrical cabinet. The heat exchange part has mutually independent first and second heat exchange channels. The first heat exchange channel is communicated with the internal circulation air duct, and the second heat exchange channel is communicated with the external circulation air duct. Heat exchange is carried out between the internal circulation air duct and the external circulation air duct through the first and second heat exchange channels. In this way, the heat exchange efficiency inside the electrical cabinet can be improved, enabling full heat exchange between the external air and the internal air while avoiding the mixing of air in different heat exchange channels. Through the above settings, the heat exchange part cooperates with the internal circulation fan and the external circulation fan, and the formed internal circulation air duct and external circulation air duct can dissipate heat from the electrical cabinet. Moreover, the internal circulation air duct can also exchange heat with the external circulation air duct through independent heat exchange channels, further improving the heat dissipation efficiency of the heat exchange device while simplifying the heat exchange structure. In this way, the overall device can also be miniaturized, and it is convenient for subsequent cleaning and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The specification drawings forming a part of this application are used to provide a further understanding of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0017] Figure 1 shows an exploded view of the heat exchange device provided in Embodiment 1 of the present utility model and the top plate of the electrical cabinet;

[0018] Figure 2 shows a schematic diagram of the internal circulation air duct and the external circulation air duct provided in Embodiment 1 of the present utility model;

[0019] Figure 3 shows a schematic diagram of the internal structure of the heat exchange device provided in Embodiment 1 of the present utility model;

[0020] Figure 4 shows a schematic diagram of the internal structure of the heat exchange device from another perspective provided in Embodiment 1 of the present utility model;

[0021] Figure 5 shows an assembly schematic diagram of the heat exchange device provided in Embodiment 2 of the present utility model and the top plates of two electrical cabinets;

[0022] Figure 6 shows an assembly schematic diagram of the heat exchange device provided in Embodiment 2 of the present utility model and two electrical cabinets;

[0023] Figure 7 shows an assembly schematic diagram of the heat exchange device provided in Embodiment 3 of the present utility model and two electrical cabinets;

[0024] Figure 8 shows a schematic diagram of the heat exchange device provided in the fourth embodiment of the present utility model assembled with a single electrical cabinet;

[0025] Figure 9 shows a schematic diagram of the heat exchange device provided in the fifth embodiment of the present utility model assembled with a single electrical cabinet;

[0026] Figure 10 Figure 9 shows a schematic diagram of the heat exchange device provided in the sixth embodiment of the present utility model assembled with a single electrical cabinet.

[0027] Among them, the above-mentioned drawings include the following reference numerals:

[0028] 10. Housing; 11. Inner circulation air inlet; 12. Inner circulation air outlet; 13. Outer circulation air inlet; 14. Outer circulation air outlet;

[0029] 15. Peripheral plate; 161. Inner circulation partition; 162. Outer circulation partition; 17. Cover plate;

[0030] 20. Heat exchange part; 21. First heat exchange channel; 22. Second heat exchange channel; 23. Outer shell;

[0031] 31. Inner circulation fan; 32. Outer circulation fan;

[0032] 100. Heat exchange device;

[0033] 200. Electrical cabinet; 201. First chamber; 202. Second chamber; 210. First cabinet body; 211. First top plate; 220. Second cabinet body; 221. Second top plate;

[0034] 240. Baffle; 250. Installation table; 260. Fixed plate; 270. Circulation fan. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present utility model and its application or use. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts belong to the scope of protection of the present utility model.

[0036] Such as Figures 1 to 4As shown in the figure, Embodiment 1 of the present utility model provides a heat exchange device 100, which includes: a housing 10, a heat exchange part 20, an internal circulation fan 31 and an external circulation fan 32. Among them, the housing 10 has a cavity, and there are an internal circulation air duct and an external circulation air duct arranged oppositely in the cavity. The internal circulation air duct has an internal circulation air inlet 11 and an internal circulation air outlet 12, and the internal circulation air inlet 11 and the internal circulation air outlet 12 are used to communicate with the electrical cabinet 200. The external circulation air duct has an external circulation air inlet 13 and an external circulation air outlet 14, and the external circulation air inlet 13 and the external circulation air outlet 14 are used to communicate with the external environment. The heat exchange part 20 has mutually independent first heat exchange channels 21 and second heat exchange channels 22. The first heat exchange channels 21 are communicated with the internal circulation air duct, and the second heat exchange channels 22 are communicated with the external circulation air duct. The heat exchange part 20 exchanges heat between the internal circulation air duct and the external circulation air duct through the first heat exchange channels 21 and the second heat exchange channels 22. The internal circulation fan 31 is arranged in the internal circulation air duct, and the external circulation fan 32 is arranged in the external circulation air duct.

[0037] Applying the technical solution of the present utility model, by arranging the internal circulation fan 31 and the external circulation fan 32 inside the housing 10, kinetic energy is provided for the air, driving the air to flow among the electrical cabinet 200, the heat exchange device 100 and the outside, and forming an internal circulation air duct and an external circulation air duct in the heat exchange device 100 to accelerate the air flow for dissipating heat from the electrical cabinet 200. The heat exchange part 20 has mutually independent first heat exchange channels 21 and second heat exchange channels 22. The first heat exchange channels 21 are communicated with the internal circulation air duct, and the second heat exchange channels 22 are communicated with the external circulation air duct. Heat is exchanged between the internal circulation air duct and the external circulation air duct through the first heat exchange channels 21 and the second heat exchange channels 22. In this way, the heat exchange efficiency inside the electrical cabinet 200 can be improved, while the external air and the internal air are fully heat exchanged, and the air in different heat exchange channels is prevented from mixing with each other. Through the above settings, the heat exchange part 20 cooperates with the internal circulation fan 31 and the external circulation fan 32, and the formed internal circulation air duct and external circulation air duct can dissipate heat from the electrical cabinet 200, and the internal circulation air duct can also exchange heat with the external circulation air duct through independent heat exchange channels, further improving the heat dissipation efficiency of the heat exchange device 100 while simplifying the heat exchange structure, thereby making the overall device miniaturized and facilitating subsequent cleaning and maintenance.

[0038] In this application, the first heat exchange channel 21 is arranged in a flat tube structure, and the second heat exchange channel 22 is arranged in a fin structure. The fin structure vertically penetrates between adjacent flat tubes of the flat tube structure, so as to form mutually perpendicular and independent first heat exchange channel 21 and second heat exchange channel 22 through the cooperation of the flat tube and the fins. The fin structure can increase the contact area between the cold air and the flat tube structure, and can reduce the flow velocity of the cold air, increase the heat exchange time to fully realize the heat exchange between the two heat exchange channels, and improve the heat exchange effect of the heat exchange part 20. Through the above settings, the inner circulation air duct and the outer circulation air duct are separated at the heat exchange part 20 through a simple structure, avoiding the mixing of the inner circulation air duct and the outer circulation air duct when flowing into the interior of the heat exchange part 20 for heat exchange. In other embodiments of this application, the first heat exchange channel 21 and the second heat exchange channel 22 are arranged at an angle, and the angle is not limited, as long as the first heat exchange channel 21 and the second heat exchange channel 22 are independently arranged. Among them, the heat exchange part 20 also has a housing 23, and the housing 23 is fixedly connected to the first heat exchange channel 21 and the second heat exchange channel 22. The housing 23 is used to fix the position of the heat exchange part 20 in the housing 10.

[0039] As Figure 2 shown, the extending direction of the middle part of the inner circulation air duct is the same as that of the outer circulation air duct, and a part of the inner circulation air duct penetrates through the outer circulation air duct. Through the above settings, the layout of the inner circulation air duct and the outer circulation air duct is compact, the space utilization rate inside the cavity is improved, unnecessary space waste is reduced, and the device is further miniaturized.

[0040] Among them, one side of the inner circulation air duct close to the inner circulation air inlet 11 penetrates through the outer circulation air duct and forms a first intersection. The heat exchange part 20 is located at the first intersection. The first heat exchange channel 21 is located on the inner circulation air duct, and the second heat exchange channel 22 is located on the outer circulation air duct. By arranging the heat exchange part 20 at the first intersection of the inner circulation air duct and the outer circulation air duct, the air in the inner circulation air duct and the air in the outer circulation air duct can be instantaneously heat-exchanged when flowing in the first heat exchange channel 21 and the second heat exchange channel 22 respectively, reducing heat loss and improving the heat dissipation efficiency of the heat exchange device 100. It can also quickly cool the hot air in the electrical cabinet 200 to avoid the temperature inside the heat exchange device 100 from being too high.

[0041] Further, one side of the inner circulation air duct close to the inner circulation air outlet 12 penetrates through the outer circulation air duct and forms a second intersection. The inner circulation fan 31 is located at the second intersection. The outer circulation air outlet 14 is located at one end of the outer circulation air duct close to the inner circulation air inlet 11, and the outer circulation fan 32 is located at the outer circulation air outlet 14. In this way, the inner circulation fan 31 is arranged at the inner circulation air outlet 12, and the outer circulation fan 32 is arranged at the outer circulation air outlet 14, which can not only make the air flow faster inside the heat exchange device 100, but also extend the flow path, making the heat exchange between the inner circulation air duct and the outer circulation air duct more sufficient. The above design also makes full use of the internal space structure of the heat exchange device 100. Since the inner circulation air duct and the outer circulation air duct need to exchange heat at the heat exchange part 20, if the inner circulation fan 31 and the outer circulation fan 32 are arranged around the heat exchange part 20, it will not only shorten the path length of the two circulation air ducts, but also make the component density in the middle of the cavity of the heat exchange device 100 too large and the component density on both sides too small, resulting in very unreasonable layout and easy interference between components, which will affect the heat exchange efficiency. In the present application, the inner circulation fan 31 and the outer circulation fan 32 are respectively arranged at the inner circulation air outlet 12 and the outer circulation air outlet 14. In this way, there is no need to increase additional placement space, improving the rationality of the internal component layout of the heat exchange device 100 and the space utilization rate, avoiding interference between components during operation, making the internal component layout of the heat exchange device 100 more compact and reasonable, and making the device miniaturized. At the same time, it is convenient for disassembly, assembly and maintenance of each component, and improves the convenience of cleaning each component inside the device.

[0042] As Figure 3 and Figure 4 shown, the housing 10 includes an outer peripheral plate 15, a partition plate and a cover plate 17. The top of the outer peripheral plate 15 has an opening, and the cover plate 17 is covered at the opening. The cover plate 17 and the outer peripheral plate 15 are detachably connected, so that it is convenient to open or fasten the cover plate 17, facilitating the cleaning or replacement of the components inside the cavity. Specifically, the cover plate 17 and the outer peripheral plate 15 are in interference fit, which is convenient for disassembly and assembly. A rubber pad is arranged between the cover plate 17 and the outer peripheral plate 15 to ensure the fastening of the assembly of the cover plate 17 and the outer peripheral plate 15, preventing water vapor or dust from entering the heat exchange device 100 from the outside and damaging the internal components. In other embodiments of the present application, the cover plate 17 and the outer peripheral plate 15 can also be connected by fasteners. Among them, the bottom of the outer peripheral plate 15 is provided with a flanging, which is convenient for detachable connection with the electrical cabinet 200 through fasteners, facilitating the replacement of the components inside the heat exchange device 100 at any time.

[0043] Further, the cover plate 17 is provided with an outer circulation air outlet 14. The partition plate is located inside the peripheral plate 15 and is fixedly connected to the peripheral plate 15. In a specific embodiment, the partition plate and the cover plate 17 are riveted or brazed, and the materials of the cover plate 17 and the partition plate are not limited, and can be set to plastic or metal materials. The peripheral plate 15 and the partition plate cooperate to form an inner circulation air duct and an outer circulation air duct. Among them, the partition plate includes an inner circulation partition plate 161 and an outer circulation partition plate 162. At the same time, the outer circulation partition plate 162 is provided with an opening for placing and fixing the position of the outer circulation fan 32. At the same time, the housing 23 of the heat exchange part 20 can be lapped on the inner circulation partition plate 161 and the outer circulation partition plate 162, which is convenient for fixing and replacing the position of the heat exchange part 20. Through the mutual cooperation of the partition plate and the cover plate 17, while forming the inner and outer circulation channels, the inner circulation air duct and the outer circulation air duct are independently separated, avoiding the mixing of air in different air ducts, and further ensuring the heat dissipation efficiency of the heat exchange device 100.

[0044] Specifically, the outer circulation air duct is arranged near the bottom of the peripheral plate 15. Since the air temperature in the inner circulation air duct is higher, the molecular movement speed is fast, the density is small, and the air temperature in the outer circulation air duct is lower than that in the inner circulation air duct, and the air density in the outer circulation air duct is larger than that in the inner circulation air duct, so it is more reasonable to arrange the outer circulation air duct near the bottom of the peripheral plate 15. In this way, it is more in line with the air density distribution in the inner circulation air duct and the outer circulation air duct, and at the same time, it can also reduce the kinetic energy loss of the air flow in the two air ducts and further improve the heat exchange efficiency. The outer circulation air inlet 13 and the inner circulation air outlet 12 are located on the same side of the peripheral plate 15. The inner circulation air inlet 11 and the inner circulation air outlet 12 are respectively located at the bottom of the peripheral plate 15, and the outer circulation air inlet 13 is located on the side wall of the peripheral plate 15. In this application, the outer circulation air inlets 13 are arranged on different sides of the peripheral plate 15 close to the inner circulation fan 31, so as to increase the air intake as much as possible and improve the heat exchange efficiency of the device. And at each outer circulation air inlet 13, a filter screen is arranged to filter impurities in the outside air to avoid entering the heat exchange device 100 and causing damage or blockage to the internal components.

[0045] With the above settings, both the inner circulation air inlet 11 and the inner circulation air outlet 12 are provided at the bottom of the heat exchange device 100 and are located in the same plane, which facilitates the rapid entry and discharge of the hot air inside the electrical cabinet 200. The outer circulation air inlet 13 and the outer circulation air outlet 14 are respectively provided on opposite sides of the heat exchange device 100, extending the path travel of the outer circulation air duct and ensuring the heat exchange effect with the inner circulation air duct. Moreover, the outer circulation air inlet 13 and the outer circulation air outlet 14 are not in the same plane, thus preventing the air inside the outer circulation air duct from flowing directly out of the outer circulation air outlet 14 without passing through the heat exchange part 20 after entering from the outer circulation air inlet 13, reducing the occurrence of air flow short - circuit, ensuring the heat dissipation effect of the heat exchange device 100, and at the same time, extending the lengths of the two air ducts as much as possible to further improve the heat exchange efficiency.

[0046] As Figure 5 and Figure 6 shown, in the second embodiment of the utility model, an electrical cabinet 200 is provided. The electrical cabinet 200 has the above - mentioned heat exchange device 100. The electrical cabinet 200 has a receiving cavity for placing electrical components. The inner circulation air inlet 11 of the heat exchange device 100 and the inner circulation air outlet 12 of the heat exchange device 100 are respectively communicated with the receiving cavity. The receiving cavity has an air outlet and an air inlet. The air outlet is communicated with the inner circulation air inlet 11, and the air inlet is communicated with the inner circulation air outlet 12. In this way, the cavity inside the heat exchange device 100 is communicated with the receiving cavity inside the electrical cabinet 200, facilitating the hot air inside the receiving cavity to flow from the air outlet to the inner circulation air inlet 11 and enter the heat exchange device 100 for heat exchange, or flow from the inner circulation air outlet 12 to the air inlet and enter the electrical cabinet 200 to cool the internal electrical components. And with the above settings, the heat exchange device 100 is arranged outside the electrical cabinet 200, without occupying the internal space of the electrical cabinet 200, enabling more electrical components to be placed inside the receiving cavity, and at the same time improving the adaptability of the device, making the application range and application scenarios of the heat exchange device 100 more extensive.

[0047] Among them, the accommodation cavity includes a first chamber 201 and a second chamber 202. The ambient temperature of the first chamber 201 is higher than that of the second chamber 202. The inner circulation air outlet 12 is communicated with the first chamber 201, the inner circulation air inlet 11 is communicated with the second chamber 202, and the first chamber 201 is communicated with the second chamber 202. Through the above settings, when the heat exchange device 100 is started, the hot air inside the first chamber 201 with a higher ambient temperature can enter the heat exchange device 100 from the inner circulation air inlet 11 in time. Subsequently, when it enters the inner circulation air duct and flows through the first heat exchange channel 21, it exchanges heat with the outside cold air in the second heat exchange channel 22, and after cooling, it enters the second chamber 202 with a relatively lower ambient temperature from the inner circulation air outlet 12 to cool the electrical components inside the second chamber 202, and then enters the first chamber 201 to cool the devices inside it, so that the inner circulation air duct in the heat exchange device 100 extends to the accommodation cavity inside the electrical cabinet 200, so as to form a complete air circulation flow path between the heat exchange device 100 and the electrical cabinet 200, and realize the heat dissipation and cooling of the electrical components inside the electrical cabinet 200.

[0048] As Figure 6 shown, the electrical cabinet 200 includes a first cabinet body 210 and a second cabinet body 220. The first cabinet body 210 and the second cabinet body 220 are arranged side by side. The first cabinet body 210 has a first chamber 201, the second cabinet body 220 has a second chamber 202, both the first cabinet body 210 and the second cabinet body 220 have communication ports, and the first cabinet body 210 and the second cabinet body 220 are communicated through the communication ports. With such a setting, one heat exchange device 100 can dissipate heat from two cabinets at the same time, improving the applicability of the heat exchange device 100. In this application, the position of the communication port is not limited. In this embodiment, the communication port is arranged at the bottom of the first cabinet body 210 and the second cabinet body 220. With such a setting, the heat exchange path inside the electrical cabinet 200 is longer, so as to cover more electrical components and realize good heat dissipation and cooling for electrical components with small heat generation power and scattered distribution.

[0049] Specifically, the electrical cabinet 200 further includes a circulation fan 270, and the circulation fan 270 is arranged at the communication port of the first cabinet body 210 or the second cabinet body 220. Through the above settings, when the number of electrical components inside the electrical cabinet 200 is large or the ambient heat is large, the circulation fan 270 can accelerate the circulation speed of the air inside the electrical cabinet 200, improve the heat exchange rate of the heat exchange device 100, and ensure the normal operation of the electrical components inside the electrical cabinet 200.

[0050] As Figure 1As shown, in the present application, the first cabinet body 210 has a first top plate 211, and the air outlet is arranged on the first top plate 211. The second cabinet body 220 has a second top plate 221, and the air inlet is arranged on the second top plate 221. Among them, a fixing plate 260 is further arranged at the air inlet of the second top plate 221 for placing and fixing the internal circulation fan 31. Specifically, an installation table 250 is further arranged at the air outlet of the first top plate 211, and the installation table 250 protrudes from the first top plate 211, thus avoiding the risk of the heat exchange part 20 being flooded with water.

[0051] As Figure 7 shown, Embodiment 3 of the present utility model provides an electrical cabinet 200, which is different from Embodiment 2 in that the placement directions of the internal circulation fan 31 and the external circulation fan 32 are adjusted, and the circulation directions of the circulation heat exchange air ducts inside the heat exchange device 100 and the electrical cabinet 200 are changed to adapt to different application scenarios.

[0052] As Figure 8 shown, Embodiment 4 of the present utility model provides an electrical cabinet 200, which is different from Embodiment 2 in that the electrical cabinet 200 includes a cabinet body with an accommodation cavity, and a baffle 240 is arranged inside the cabinet body. The baffle 240 divides the accommodation cavity into a first chamber 201 and a second chamber 202. By arranging the baffle 240, the chamber can be divided by a simple structure to perform targeted cooling operations on different temperature or key areas.

[0053] As Figure 9 shown, Embodiment 5 of the present utility model provides an electrical cabinet 200, which is different from Embodiment 4 in that the heat exchange device 100 is arranged horizontally at the rear side of the electrical cabinet 200 to dissipate heat from the electrical components inside the electrical cabinet 200.

[0054] As Figure 10 shown, Embodiment 6 of the present utility model provides an electrical cabinet 200, which is different from Embodiment 4 in that the heat exchange device 100 is arranged vertically at the rear side of the electrical cabinet 200 to dissipate heat from the electrical components inside the electrical cabinet 200. In the present application, the X-axis represents the horizontal direction and the Z-axis represents the vertical direction.

[0055] In other embodiments of the present application, the heat exchange device 100 can be selectively disposed at different positions on the electrical cabinet 200, such as the front side, the rear side, and the top of the electrical cabinet 200, etc. Moreover, the heat exchange device 100 can be placed vertically, horizontally, or obliquely. And the path flow direction of the circulating heat exchange air duct inside the electrical cabinet 200 can be adjusted and changed by swapping the positions of the heat exchange device 100 or the inner circulation fan 31 and the outer circulation fan 32, so as to further improve the adaptability of the heat exchange device 100, and thus enable the heat exchange device 100 to adapt to various different usage requirements and application scenarios.

[0056] The technical solution provided by the present application has the following advantages:

[0057] 1. The heat exchange device can be placed at different positions on the electrical cabinet, and can dissipate heat from a single or two electrical cabinets at the same time, and can be applied to a variety of scenarios, greatly improving the adaptability of the heat exchange device;

[0058] 2. Through the cooperation of the fan and the heat exchange part, the heat exchange rate is high, and the internal cavity of the electrical cabinet is connected. For devices with low heat generation power and scattered placement, the heat exchange device can make the circulation path longer and the heat exchange effect better;

[0059] 3. The heat exchange device is a detachable structure, which is convenient for daily maintenance and servicing;

[0060] 4. The outer circulation air inlet and outlet are not on the same plane, avoiding the risk of air flow short circuit. The inner circulation fan is embedded on the side of the outer circulation air inlet, making full use of the structural space and realizing the miniaturization of the device.

[0061] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present utility model. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the description. In all the examples shown and discussed here, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0063] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by orientation terms such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description. Without contrary explanation, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the protection scope of the present utility model; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0064] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above-mentioned", etc. can be used here to describe the spatial positional relationship between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0065] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of differentiating the corresponding components. Without otherwise stating, the above words have no special meaning, and thus cannot be construed as a limitation on the protection scope of the present utility model.

[0066] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A heat exchange device, characterized in that: The heat exchange device comprises: A shell (10), wherein the shell (10) has a cavity, wherein the cavity has an inner circulation air duct and an outer circulation air duct arranged opposite to each other, wherein the inner circulation air duct has an inner circulation air inlet (11) and an inner circulation air outlet (12), wherein the inner circulation air inlet (11) and the inner circulation air outlet (12) are used to communicate with the electrical cabinet (200), and wherein the outer circulation air duct has an outer circulation air inlet (13) and an outer circulation air outlet (14), wherein the outer circulation air inlet (13) and the outer circulation air outlet (14) are used to communicate with the external environment; A heat exchange portion (20), the heat exchange portion (20) having a first heat exchange channel (21) and a second heat exchange channel (22) which are independent of each other, the first heat exchange channel (21) being in communication with the inner circulation air duct, the second heat exchange channel (22) being in communication with the outer circulation air duct, the heat exchange portion (20) performing heat exchange between the inner circulation air duct and the outer circulation air duct through the first heat exchange channel (21) and the second heat exchange channel (22); An internal circulation fan (31) and an external circulation fan (32), wherein the internal circulation fan (31) is arranged in the internal circulation air duct, and the external circulation fan (32) is arranged in the external circulation air duct.

2. The heat exchange device according to claim 1, characterized in that: The extension direction of the middle portion of the inner circulation air duct is the same as the extension direction of the outer circulation air duct, and the inner circulation air duct is partially arranged in the outer circulation air duct.

3. The heat exchange device according to claim 1, characterized in that: A side of the inner circulation air duct close to the inner circulation air inlet (11) is arranged on the outer circulation air duct to form a first intersection, the heat exchange part (20) is located at the first intersection, the first heat exchange channel (21) is located on the inner circulation air duct, and the second heat exchange channel (22) is located on the outer circulation air duct.

4. The heat exchange device according to claim 3, characterized in that: A side of the inner circulation air duct close to the inner circulation air outlet (12) is arranged on the outer circulation air duct to form a second intersection, the inner circulation fan (31) is located at the second intersection, the outer circulation air outlet (14) is located at one end of the outer circulation air duct close to the inner circulation air inlet (11), and the outer circulation fan (32) is located at the outer circulation air outlet (14).

5. The heat exchange device according to claim 3, characterized in that: The shell (10) comprises an outer plate (15), a partition plate and a cover plate (17); the outer plate (15) has an opening at the top; the cover plate (17) covers the opening; the cover plate (17) has the outer circulation air outlet (14); the partition plate is located inside the outer plate (15); the outer plate (15) cooperates with the partition plate to form the inner circulation air duct and the outer circulation air duct; the outer circulation air duct is arranged near the bottom of the outer plate (15); the outer circulation air inlet (13) and the inner circulation air outlet (12) are located on the same side of the outer plate (15); the inner circulation air inlet (11) and the inner circulation air outlet (12) are respectively located at the bottom of the outer plate (15); and the outer circulation air inlet (13) is located on the side wall of the outer plate (15).

6. An electrical cabinet, characterized in that: The electrical cabinet has a heat exchange device according to any one of claims 1 to 5, and the electrical cabinet has a accommodating cavity, the accommodating cavity is used to place electrical components, and the internal circulation air inlet (11) of the heat exchange device and the internal circulation air outlet (12) of the heat exchange device are respectively connected to the accommodating cavity.

7. The electrical cabinet according to claim 6, characterized in that: The accommodating chamber comprises a first chamber (201) and a second chamber (202); the internal circulation air outlet (12) is in communication with the first chamber (201); the internal circulation air inlet (11) is in communication with the second chamber (202); and the first chamber (201) is in communication with the second chamber (202).

8. The electrical cabinet according to claim 7, characterized in that: The electrical cabinet comprises a first cabinet (210) and a second cabinet (220); the first cabinet (210) and the second cabinet (220) are arranged side by side; the first cabinet (210) has a first chamber (201); the second cabinet (220) has a second chamber (202); the first cabinet (210) and the second cabinet (220) both have a communication port; the first cabinet (210) and the second cabinet (220) are connected via the communication port.

9. The electrical cabinet according to claim 8, characterized in that: The electrical cabinet further comprises a circulation fan (270), and the circulation fan (270) is arranged at a communication port of the first cabinet (210) or the second cabinet (220).

10. The electrical cabinet according to claim 7, characterized in that: The electrical cabinet comprises a cabinet body, the cabinet body has the accommodating cavity, a baffle (240) is arranged in the cabinet body, and the baffle (240) divides the accommodating cavity into the first chamber (201) and the second chamber (202).

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