A heat dissipation device for explosion-proof control cabinet

Abstract

The application relates to a heat dissipation device for an explosion-proof control cabinet. The heat dissipation device for the explosion-proof control cabinet comprises a heat-conducting bottom plate arranged in an explosion-proof control cabinet shell and provided with heat-conducting silica gel between the heat-conducting bottom plate and the explosion-proof control cabinet shell, a surface of the heat-conducting bottom plate is connected with a plurality of groups of heat-conducting fins, one end of the heat-conducting fins is inserted into a heat radiator, the heat-conducting bottom plate and the heat radiator are not on the same horizontal plane, and the inside of the heat radiator is provided with a plurality of grooves. The heat radiator of the frequency converter can absorb the heat of a power module of the frequency converter. Since the heat-conducting fins are inserted between two groups of heat radiators of the frequency converter, the heat on the heat radiators of the frequency converter can be conducted to the heat-conducting fins, and the heat is conducted to the explosion-proof control cabinet shell through the heat-conducting silica gel and the heat-conducting bottom plate. The explosion-proof control cabinet shell transmits the heat to external air. The heat dissipation device has good reliability and low manufacturing cost.

Description

Technical Field

[0001] This invention belongs to the field of automation control technology, and specifically relates to a heat dissipation device for explosion-proof control cabinets. Background Technology

[0002] Currently, the industry mainly uses the following methods to dissipate heat from explosion-proof control cabinets (containing heat-generating components of frequency converters):

[0003] By utilizing the heat sink on the inverter power module (IGBT), heat is directly transferred to the air inside the control cabinet via a fan. The heated air is then naturally dissipated into the surrounding environment through the explosion-proof control cabinet casing (metal), thereby achieving the purpose of reducing the temperature of the inverter power module (IGBT).

[0004] b. Remove the original heat sink installed on the inverter power module (IGBT), and then redesign a special heat sink according to the size of the power module and install it on the power module (IGBT). Then, transfer the heat from the heat sink to the outside of the explosion-proof control cabinet through the heat pipe heat sink (it is necessary to make holes in the explosion-proof control cabinet shell).

[0005] c. Without altering the heat sink structure on the inverter power module (IGBT), clean air or other protective gases are continuously added inside the control cabinet as a protective medium to form a positive pressure explosion-proof enclosure. The heat from the power module (IGBT) is transferred to the outside air through the clean air or other protective gases.

[0006] d. The inverter power module (IGBT) is immersed in oil to form an oil-filled explosion-proof device, and the power module is cooled by oil cooling.

[0007] Method a is only suitable for lower-power frequency converters due to the limited internal volume of the explosion-proof control cabinet. Method b, involving modification of the frequency converter and complex manufacturing process, is suitable for higher-power frequency converters. Methods c and d are unsuitable for explosion-proof control cabinet enclosures due to their complex manufacturing processes and high operating and maintenance costs. Therefore, a simple, low-cost, and reliable heat dissipation device is needed to ensure reliable operation of the frequency converter within the explosion-proof control cabinet. Current explosion-proof control cabinets typically use multiple slots for heat dissipation, leaving the heat inside the cabinet. However, this method is ineffective due to the limited internal space and poor air circulation. Summary of the Invention

[0008] The purpose of this invention is to provide a heat dissipation device for explosion-proof control cabinets that is simple in structure and reasonably designed in order to solve the above-mentioned problems.

[0009] The present invention achieves the above objectives through the following technical solution: without changing the original mechanical structure of the frequency converter, it solves the problem of the frequency converter being able to operate reliably in a space-constrained explosion-proof control cabinet.

[0010] A heat dissipation device for an explosion-proof control cabinet includes a heat-conducting base plate disposed inside the explosion-proof control cabinet housing, with heat-conducting silicone sealant placed between the heat-conducting base plate and the explosion-proof control cabinet housing. Several sets of heat-conducting fins are connected to the surface of the heat-conducting base plate, with one end of each heat-conducting fin inserted into the interior of a heat sink. The heat-conducting base plate and the heat sink are not on the same horizontal plane, and the interior of the heat sink is provided with several grooves.

[0011] As a further optimization of the present invention, the heat-conducting fins are inserted into the groove body, the heat-conducting fins include a first fin and a second fin, the first fin and the second fin are slidably connected, a first spring is provided between the first fin and the second fin, and the first fin and the second fin are in close contact with the opposite groove walls of a set of groove bodies respectively.

[0012] As a further optimization of the present invention, a support plate is provided above the heat-conducting fins, and a fixing plate is fixedly connected to the upper end of the heat-conducting fins. The fixing plate slides up and down within the support plate, and a second spring is provided between the fixing plate and the support plate. One set of grooves corresponds to two sets of heat-conducting fins. The heat dissipation device also includes a winding structure and a moving structure. When the winding structure drives one set of heat-conducting fins to move upward, the other set of heat-conducting fins moves downward. The moving structure drives several sets of heat-conducting fins to move horizontally.

[0013] As a further optimization of the present invention, the winding structure includes a roller that passes through the support plate and is rotatably connected to the support plate. A connecting strip is wound around the surface of the roller, and the other end of the connecting strip is fixedly connected to a fixing plate. The connecting strip is located inside the support plate, and the winding directions of the connecting strips in adjacent sets of support plates are opposite.

[0014] As a further optimization of the present invention, one end of the reel is provided with a linkage structure, which cooperates with the moving structure. The linkage structure drives the reel to wind up the connecting belt. The moving structure includes a threaded rod, one end of which is equipped with a motor. Two sets of threaded blocks are threadedly connected to the outer surface of the threaded rod, and the threaded blocks are located on both sides of several sets of support plates. The threaded blocks are slidably connected to the reel. The linkage structure includes a first gear, which is fixedly sleeved on the outer surface of the threaded rod. A second gear is fixedly sleeved on the outer surface of the reel, and the second gear meshes with the first gear.

[0015] As a further optimization of the present invention, when one set of the threaded blocks is in contact with the support plate, the other set of the threaded blocks is not in contact with the support plate.

[0016] As a further optimization of the present invention, the heat-conducting fins include at least four sets of No. 3 fins, with multiple sets of No. 3 fins arranged in a circular arrangement, and the heat-conducting fins are rotatable. Each time they rotate, the two side fins are in close contact with the groove wall of the groove. Multiple heat-conducting plates are detachably connected to the heat-conducting base plate, and the heat-conducting plates are arranged correspondingly to the groove wall of the groove. The heat-conducting plates are in contact with the two sets of No. 3 fins located on the side.

[0017] As a further optimization of the present invention, a rotating shaft is provided above the heat-conducting fins, rotating around its own axis. A sleeve is fitted on the outer surface of the rotating shaft, and a telescopic rod is connected to the surface of the sleeve. The sleeve is connected to the third fin through the telescopic rod. Support blocks are also uniformly fixedly installed on the outer surface of the rotating shaft. A protruding fixing block is provided at the lower end of the sleeve. A first protrusion corresponding to the third fin is fixedly installed on the outside of the rotating shaft. A second protrusion is fixedly installed on the inner surface of the third fin, and the second protrusion contacts and engages with the first protrusion.

[0018] As a further optimization of the present invention, when the rotating shaft rotates to a certain angle, the support block and the fixed block make contact and cooperate, and the second protrusion is located between two adjacent groups of first protrusions.

[0019] As a further optimization of the present invention, an adjustment structure is provided above the support plate. The adjustment structure includes a first connecting plate and a second connecting plate. The first connecting plate is rotatably installed on the upper end of the first and last support plates. The upper end of the middle support plate is rotatably connected to the center of the second connecting plate. Multiple sets of second connecting plates are connected end to end. Two sets of first connecting plates are rotatably connected to the first and last second connecting plates respectively.

[0020] The beneficial effects of this invention are as follows: The inverter heat sink of this invention can absorb the heat of the inverter power module. Since the heat-conducting fins are inserted between the two sets of inverter heat sinks, the heat on the inverter heat sink can be conducted to the heat-conducting fins, and then conducted to the explosion-proof control cabinet shell through the heat-conducting silicone and the heat-conducting base plate. The explosion-proof control cabinet shell transfers the heat to the outside air. This heat dissipation device has good reliability, low manufacturing cost (no need to modify the original inverter, and the heat dissipation device uses common materials), convenient construction (no need to open holes in the control cabinet shell), and low maintenance cost (no maintenance required). Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0023] Figure 3 This is the present invention. Figure 2Enlarged view of point A;

[0024] Figure 4 This is a schematic diagram of the structure of Embodiment 3 of the present invention;

[0025] Figure 5 This is a partial structural cross-sectional view of the present invention;

[0026] Figure 6 This is the present invention. Figure 5 Enlarged view of point B.

[0027] In the diagram: 101, thermally conductive silicone; 102, thermally conductive base plate; 2, thermally conductive fins; 201, fin number one; 202, fin number two; 203, fin number three; 301, spring number one; 401, support plate; 402, fixing plate; 501, reel; 502, connecting belt; 503, spring number two; 601, connecting plate number one; 602, connecting plate number two; 701, threaded rod; 702, threaded block; 703, motor; 801, gear number one; 802, gear number two; 901, support block; 902, fixing block; 903, protrusion number one; 904, protrusion number two; 905, telescopic rod; 906, sleeve; 907, heat-conducting plate; 908, shaft. Detailed Implementation

[0028] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content. Example 1

[0029] like Figure 1 As shown, a heat dissipation device for an explosion-proof control cabinet includes a heat-conducting base plate 102, which is disposed inside the explosion-proof control cabinet housing. A heat-conducting silicone 101 is disposed between the heat-conducting base plate 102 and the explosion-proof control cabinet housing. Several sets of heat-conducting fins 2 are connected to the surface of the heat-conducting base plate 102. One end of the heat-conducting fins 2 is inserted into the heat sink. The heat-conducting base plate 102 and the heat sink are not on the same horizontal plane. Several grooves are disposed inside the heat sink.

[0030] Remove the top cover of the inverter power module inside the inverter housing to expose the inverter heat sink to the air. Then, insert the heat-conducting fins 2 into the slots inside the inverter heat sink until they are full. The connection between the heat-conducting fins 2 and the heat-conducting base plate 102 is made by pressing with a press. The distance and other dimensions between the heat-conducting fins 2 are determined according to the dimensions of the inverter heat sink. The gap between the heat-conducting fins 2 and the inverter heat sink should be minimized as much as possible. The inverter heat sink can absorb the heat from the inverter power module. Since the heat-conducting fins 2 are inserted between the two sets of inverter heat sinks, the heat on the inverter heat sink can be conducted to the heat-conducting fins 2 and then conducted to the explosion-proof control cabinet housing through the thermally conductive silicone 101 and the heat-conducting base plate 102. The explosion-proof control cabinet housing then transfers the heat to the outside air. Example 2

[0031] like Figures 2 to 3 As shown, based on the above embodiment 1, for heat sinks with irregular shapes or thick walls, and other heat dissipation structures such as water cooling structures are provided inside the walls, the heat-conducting fins 2 are adjusted. When the heat-conducting fins 2 reach saturation, they are replaced to improve heat dissipation efficiency and enable the heat-conducting fins 2 to fit tightly against the walls of the sink.

[0032] The device includes a heat-conducting base plate 102, which is disposed inside the explosion-proof control cabinet housing. A heat-conducting silicone 101 is disposed between the heat-conducting base plate 102 and the explosion-proof control cabinet housing. Several sets of heat-conducting fins 2 are connected to the surface of the heat-conducting base plate 102. One end of the heat-conducting fins 2 is inserted into the heat sink. The heat-conducting base plate 102 and the heat sink are not on the same horizontal plane. Several grooves are disposed inside the heat sink.

[0033] The heat-conducting fin 2 is inserted into the groove. The heat-conducting fin 2 includes a first fin 201 and a second fin 202. The first fin 201 and the second fin 202 are slidably connected. A first spring 301 is provided between the first fin 201 and the second fin 202. The first fin 201 and the second fin 202 are in close contact with the opposite groove walls of a set of grooves.

[0034] A support plate 401 is provided above the heat-conducting fins 2, and a fixing plate 402 is fixedly connected to the upper end of the heat-conducting fins 2. The fixing plate 402 slides up and down within the support plate 401. A second spring 503 is provided between the fixing plate 402 and the support plate 401. The two adjacent sets of support plates 401 are the support plates 401 corresponding to the two sets of heat-conducting fins 2 of a set of grooves. One set of grooves corresponds to two sets of heat-conducting fins 2. The heat dissipation device also includes a winding structure and a moving structure. When the winding structure drives one set of heat-conducting fins 2 to move upward, the other set of heat-conducting fins 2 moves downward. The moving structure drives several sets of heat-conducting fins 2 to move horizontally.

[0035] The winding structure includes a roller 501 that passes through the support plate 401 and is rotatably connected to the support plate 401. A connecting strip 502 is wound around the surface of the roller 501. The other end of the connecting strip 502 is fixedly connected to the fixing plate 402. The connecting strip 502 is located inside the support plate 401, and the winding directions of the connecting strips 502 in two adjacent sets of support plates 401 are opposite.

[0036] One end of the reel 501 is provided with a linkage structure, which cooperates with the moving structure. The linkage structure drives the reel 501 to wind up the connecting belt 502. The moving structure includes a threaded rod 701, one end of which is equipped with a motor 703. The outer surface of the threaded rod 701 is threaded with two sets of threaded blocks 702, which are located on both sides of several sets of support plates 401. The threaded blocks 702 are slidably connected to the reel 501. The linkage structure includes a first gear 801, which is fixedly sleeved on the outer surface of the threaded rod 701. The outer surface of the reel 501 is fixedly sleeved on a second gear 802, and the second gear 802 meshes with the first gear 801.

[0037] When one set of the threaded blocks 702 is in contact with the support plate 401, the other set of the threaded blocks 702 is not in contact with the support plate 401.

[0038] An adjustment structure is provided above the support plate 401. The adjustment structure includes a first connecting plate 601 and a second connecting plate 602. The first connecting plate 601 is rotatably installed on the upper end of the first and last support plates 401. The upper end of the middle support plate 401 is rotatably connected to the center of the second connecting plate 602. Multiple sets of second connecting plates 602 are connected end to end. Two sets of first connecting plates 601 are rotatably connected to the first and last second connecting plates 602 respectively.

[0039] Remove the top cover of the inverter power module inside the inverter housing, exposing the inverter heatsink to the air. Manually pull the first and last support plates 401 to move them closer or further apart. With the cooperation of the first connecting plate 601 and the second connecting plate 602, the distance between the multiple support plates 401 remains the same during movement. This facilitates adjusting the distance between the multiple sets of heat-conducting fins 2 according to the position of the inner tank of the inverter heatsink. Adjacent heat-conducting fins 2 are not at the same height. Insert one set of heat-conducting fins 2 into the heatsink. Since a first spring 301 is installed between the first fin 201 and the second fin 202, the first fin 201 and the second fin 202 will be inserted into the inverter heatsink. Inside the inverter, under the elastic force of spring 301, spring 301 pushes fin 201 and fin 202 away from each other, making them fit more tightly against the inverter heatsink and reducing the gap between them, thus improving heat dissipation efficiency. When fins 201 and 202 are saturated, motor 703 starts, driving threaded rod 701 to rotate. Since gears 801 and 802 are meshed, the threaded rod 701 can drive the reel 501 to rotate. When the reel 501 rotates, it can dissipate heat from a set of heat-conducting components inserted into the inverter heatsink. Fin 2 is wound up, while another set of heat-conducting fins 2 located outside the inverter radiator is unwound. Since the threaded rod 701 is threadedly connected to the threaded block 702, the rotation of the threaded rod 701 drives the two sets of threaded blocks 702 to move synchronously. It should be noted that one set of threaded blocks 702 is in contact with the support plate 401, while the other set of threaded blocks 702 maintains a certain distance from the support plate 401. As the threaded rod 701 rotates, it drives the threaded block 702 that is away from the support plate 401 towards the support plate 401. The distance between the other set of threaded blocks 702 and the support plate 401 gradually increases. When the threaded block 702 contacts the support plate 401, the threaded rod 701 continues to rotate, thus enabling the threaded block 702 to push... Several sets of support plates 401 move synchronously, thereby driving several sets of heat-conducting fins 2 to move synchronously. During the movement of the heat-conducting fins 2, since the second spring 503 is located between the support plate 401 and the fixed plate 402, under the pushing action of the second spring 503, when the heat-conducting fins 2 move to the gap position in the inverter heat sink, the second spring 503 can push the fixed plate 402 and the heat-conducting fins 2 downward, thereby inserting the heat-conducting fins 2 into the interior of the inverter heat sink. Through the above structure, the heat-conducting fins 2 can be replaced, which helps to ensure the heat dissipation effect of the device and improves the heat dissipation efficiency, making the device more widely applicable. This device is suitable for heat sinks with irregularly shaped walls or thick walls.The tank walls are equipped with other heat dissipation structures, such as water-cooling structures. Example 3

[0040] like Figures 4 to 6 As shown, based on the above embodiment 1, the heat-conducting fins 2 are adjusted to address the issue of a wider tank and thinner tank walls;

[0041] The device includes a heat-conducting base plate 102, which is disposed inside the explosion-proof control cabinet housing. A heat-conducting silicone 101 is disposed between the heat-conducting base plate 102 and the explosion-proof control cabinet housing. Several sets of heat-conducting fins 2 are connected to the surface of the heat-conducting base plate 102. One end of the heat-conducting fins 2 is inserted into the heat sink. The heat-conducting base plate 102 and the heat sink are not on the same horizontal plane. Several grooves are disposed inside the heat sink.

[0042] The heat-conducting fins 2 include at least four sets of No. 3 fins 203, which are arranged in a circular pattern. The heat-conducting fins 2 are rotatable, and each time they rotate until the two side fins are in close contact with the tank wall. Multiple heat-conducting plates 907 are detachably connected to the heat-conducting base plate 102, and the heat-conducting plates 907 are arranged corresponding to the tank wall. The heat-conducting plates 907 are in contact with the two sets of No. 3 fins 203 located on the side.

[0043] A rotating shaft 908 is provided above the heat-conducting fin 2, rotating around its own axis. A sleeve 906 is fitted on the outer surface of the rotating shaft 908. A telescopic rod 905 is connected to the surface of the sleeve 906. The sleeve 906 is connected to the third fin 203 through the telescopic rod 905. Support blocks 901 are also uniformly fixedly installed on the outer surface of the rotating shaft 908. A protruding fixing block 902 is provided at the lower end of the sleeve 906. A first protrusion 903 corresponding to the third fin 203 is fixedly installed on the outside of the rotating shaft 908. A second protrusion 904 is fixedly installed on the inner surface of the third fin 203, and the second protrusion 904 contacts and engages with the first protrusion 903.

[0044] When the rotating shaft 908 rotates to a certain angle, the support block 901 and the fixing block 902 come into contact and cooperate, and the second protrusion 904 is located between two adjacent groups of first protrusions 903.

[0045] An adjustment structure is provided above the support plate 401. The adjustment structure includes a first connecting plate 601 and a second connecting plate 602. The first connecting plate 601 is rotatably installed on the upper end of the first and last support plates 401. The upper end of the middle support plate 401 is rotatably connected to the center of the second connecting plate 602. Multiple sets of second connecting plates 602 are connected end to end. Two sets of first connecting plates 601 are rotatably connected to the first and last second connecting plates 602 respectively.

[0046] The embodiments described above are merely examples of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A heat dissipating device for an explosion-proof control cabinet, characterized by: The utility model provides an anti -explosion control cabinet heat dissipation device, including heat conduction bottom plate, heat conduction bottom plate is arranged in the anti -explosion control cabinet shell, and heat conduction bottom plate is provided with heat conduction silica gel between anti -explosion control cabinet shell, the surface of heat conduction bottom plate is connected with a plurality of groups of heat conduction fin, and one end of heat conduction fin is inserted in radiator interior, heat conduction bottom plate and radiator are not in the same horizontal plane, and the inside of radiator is provided with a plurality of grooves, The heat conduction fin is inserted into the groove, the heat conduction fin includes a fin and a second fin, the first fin and the second fin are slidingly connected, a first spring is arranged between the first fin and the second fin, and the first fin and the second fin are in close contact with the opposite groove walls of a group of grooves. A support plate is arranged above the heat conduction fin, a fixed plate is fixedly connected to the upper end of the heat conduction fin, the fixed plate slides up and down in the support plate, a second spring is arranged between the fixed plate and the support plate, a group of grooves corresponds to two groups of heat conduction fins, the heat dissipation device further includes a winding structure and a moving structure, when the winding structure drives a group of heat conduction fins to move upward, another group of heat conduction fins moves downward, and the moving structure drives a plurality of groups of heat conduction fins to move horizontally. The winding structure includes a reel, the reel penetrates through the support plate and is rotatably connected to the support plate, a connecting belt is wound on the surface of the reel, the other end of the connecting belt is fixedly connected to the fixed plate, the connecting belt is located in the support plate, and the winding directions of the connecting belts in adjacent two groups of support plates are opposite. One end of the reel is provided with a linkage structure, the linkage structure cooperates with the moving structure, and the linkage structure drives the reel to wind the connecting belt, wherein the moving structure includes a threaded rod, one end of the threaded rod is provided with a motor, the outer surface of the threaded rod is threadedly connected with two groups of threaded blocks, the threaded blocks are located on both sides of a plurality of groups of support plates, the threaded blocks are slidingly connected to the reel, the linkage structure includes a first gear, the first gear is fixedly sleeved on the outer surface of the threaded rod, the outer surface of the reel is fixedly sleeved with a second gear, and the second gear and the first gear are engaged.

2. The heat dissipation device for an explosion-proof control cabinet according to claim 1, characterized in that: When one group of threaded blocks is in contact with the support plate, the other group of threaded blocks is not in contact with the support plate.

3. The heat dissipating device for an explosion-proof control cabinet according to claim 2, characterized in that: The heat conduction fin includes at least four groups of third fins, a plurality of groups of third fins are arranged around, and the heat conduction fin is rotatable, each time the heat conduction fin is rotated to the side two fins are in close contact with the groove wall, a plurality of heat conduction plates are detachably connected to the heat conduction bottom plate, and the heat conduction plates are correspondingly arranged with the groove walls of the grooves, and the heat conduction plates are in contact with the two groups of third fins located on the side.

4. The heat dissipating device for an explosion-proof control cabinet according to claim 3, characterized in that: A rotating shaft is arranged above the heat conduction fin and rotates around its own axis, a sleeve is sleeved on the outer surface of the rotating shaft, an extension rod is connected to the sleeve, the sleeve is connected to the third fin through the extension rod, a plurality of support blocks are evenly fixedly installed on the outer surface of the rotating shaft, a protruding fixed block is arranged at the lower end of the sleeve, a first protrusion corresponding to the third fin is fixedly installed on the outer surface of the rotating shaft, and a second protrusion is fixedly installed on the inner surface of the third fin and in contact with the first protrusion.

5. The heat dissipating device for an explosion-proof control cabinet according to claim 4, characterized in that: When the rotating shaft rotates to a certain angle, the supporting block is in contact with the fixed block, and the second protrusion is located between two adjacent groups of the first protrusions.

6. The heat dissipating device for an explosion-proof control cabinet according to claim 5, characterized in that: The upper portion of the supporting plate is provided with an adjusting structure, the adjusting structure comprises a first connecting plate and a second connecting plate, the upper end of the supporting plate is rotatably connected with the first connecting plate at the head and tail, the upper end of the supporting plate is rotatably connected with the center of the second connecting plate in the middle, the second connecting plates are connected in series at the head and tail, and the first connecting plates are rotatably connected with the second connecting plates at the head and tail.

Images