Heat dissipation devices and electrical cabinets

Abstract

This utility model provides a heat dissipation device and an electrical cabinet, belonging to the field of electrical equipment technology. The heat dissipation device includes a fixed guide rail and a fan assembly. The fixed guide rail is used to connect the cabinet panel of the electrical cabinet, and a horizontally extending inward folded edge structure is provided on the side of the fixed guide rail away from the cabinet panel. The fan assembly includes a fan mounting bracket and two sets of fans, with the fan mounting bracket slidably mounted on the fixed guide rail. The outgoing cable directions of the two sets of fans are opposite. The heat dissipation device provided by this utility model arranges the cables with two sets of fans exiting in opposite directions, reducing cable length, redundant cable length, and bending range, thereby reducing cable damage. This utility model improves the fan heat dissipation device in the electrical cabinet from two directions: changing the cable arrangement and improving the installation structure, effectively preventing the cables from being scratched and damaged during fan installation and maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of electrical equipment technology, and more specifically, it relates to a heat dissipation device and an electrical cabinet. Background Technology

[0002] In the design of the heat dissipation system of electrical cabinets, the installation structure of the fan rails and the cable management scheme directly affect the equipment reliability and maintenance efficiency.

[0003] Existing fan rail mounting structures mostly use external bolts or clips for fixing, and the fastening end face is usually at the same level as or even higher than the fan outlet port. When disassembling and assembling fans in the confined space inside the cabinet, the operating tools are very likely to come into rigid contact with the adjacent fan cables, scraping the wires. In addition, most existing fans use single-sided cabling, forcing the cable length to be extended to more than 1.5 meters. The excessively long cables are redundantly bent inside the cabinet, which not only occupies the cabling channel space, but also increases the probability of wire core breakage due to the periodic stress concentration caused by long-term fan vibration. Utility Model Content

[0004] The purpose of this utility model is to provide a heat dissipation device and an electrical cabinet, which aims to solve the problem that the heat dissipation device is prone to scratching the fan cables during disassembly and assembly.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a heat dissipation device, installed inside the fan mounting cavity of an electrical cabinet, comprising: A fixed guide rail is horizontally installed inside the electrical cabinet. The fan assembly includes a fan mounting frame and two sets of fans. The fan mounting frame is slidably mounted on the fixed guide rail. The two sets of fans are sequentially mounted on the fan mounting frame, and the outgoing lines of the two sets of fans are in opposite directions.

[0006] In another embodiment of this application, the fixed guide rail is provided with a horizontally inwardly extending folded edge structure on the side away from the cabinet panel; the folded edge structure is provided with an installation structure for connecting the load-bearing frame inside the electrical cabinet; The mounting structure includes: The mounting part is located on the outer edge of the folded edge structure; Fasteners that connect the mounting portion and the load-bearing frame; A shielding portion is provided on the inner edge of the folded edge structure, and the upper end of the shielding portion extends above the mounting portion to shield the mounting portion and the fastener.

[0007] In another embodiment of this application, the blocking portion includes: A longitudinal shield is provided, which is connected to the folded edge structure and extends upward, and the height of the longitudinal shield is greater than the height of the mounting part. A lateral shield is provided, which is connected to the upper end of the longitudinal shield and extends toward one side of the mounting portion until it covers the mounting portion.

[0008] In another embodiment of this application, the shielding part is provided with a clearance hole, which corresponds to the mounting part.

[0009] In another embodiment of this application, the fixed guide rail includes: The base plate, both ends of which are connected to the side panels of the electrical cabinet; Two side plates are symmetrically arranged on both sides of the base plate in the width direction; the two side plates are perpendicular to the base plate and extend upward. Ventilation holes are provided on the base plate.

[0010] In another embodiment of this application, a plurality of mounting portions are provided along the length direction of the fixed guide rail, the plurality of mounting portions are spaced apart, and the plurality of mounting portions are flush with the side plate.

[0011] In another embodiment of this application, the fan mounting bracket includes: Two movable frames are arranged at intervals along the length direction, and both movable frames are slidably engaged with the fixed guide rail; A connector that detachably connects the two movable frames; The two sets of fans are respectively installed on the two movable frames, and the fans are discharged in a direction away from the other set of fans.

[0012] The beneficial effects of the heat dissipation device provided by this utility model are as follows: Compared with the prior art, the heat dissipation device of this utility model changes the installation structure on the side of the fixed guide rail. It uses the mounting part located on the folded edge structure to fix it to the load-bearing frame inside the electrical cabinet. Compared with the traditional method of connecting the load-bearing frame to the Z-shaped folded edge and then using the second vertical folded edge, the height of the fixed structure is reduced when using the mounting part, so that the position of the mounting part and the fastener is lowered to below the height of the fan cable outlet, avoiding contact between the fan cable outlet and the mounting part and the fastener, and reducing the risk of cable damage. The shielding part is located on one side of the mounting part, which further separates the inner fan cable and the outer fastener, preventing the cable from contacting the fastener, and further protecting the cable. The cooperation between the mounting part and the shielding part effectively avoids cable damage. In addition, the reverse cable outlet of the two sets of fans on the same fan mounting frame can reduce the redundant length of the fan cable, avoiding the problem of the cable being easily damaged due to excessive redundant length extending to the fixed structure and being easily broken by the fan vibration.

[0013] An electrical cabinet is also provided, which employs the aforementioned heat dissipation device. The electrical cabinet has a load-bearing frame in its inner cavity, and the fan mounting cavity is located on one side of the load-bearing frame. The mounting part is attached to the load-bearing frame, and the fastener passes through the mounting part and is fixedly connected to the load-bearing frame.

[0014] In another embodiment of this application, one end of the fan mounting cavity has a limiting structure. The fixed end of the limiting structure is connected to the side plate of the electrical cabinet. The limiting structure extends toward the inside of the fan mounting cavity, and the free end of the limiting structure is connected to the free end of the fan mounting frame.

[0015] As another embodiment of this application, it also includes: The sealing plate assembly includes two sealing plates for sealing the two end ports of the fan mounting cavity, the sealing plates being connected to the side plate of the electrical cabinet, and either sealing plate being fixed to the traction end of the fan mounting frame.

[0016] The beneficial effects of the electrical cabinet provided by this utility model are as follows: Compared with the prior art, the electrical cabinet of this utility model adopts the above-mentioned heat dissipation device and has all the beneficial effects of the above-mentioned heat dissipation device. By changing the arrangement of the fixing structure of the fixed guide rail in the heat dissipation device, the connection height of the side mounting structure is reduced, so that the mounting part and its connected fasteners are located below the fan outlet. Under the influence of the height difference, the shielding effect of the shielding part is combined to effectively reduce the risk of cable scratches during installation and disassembly. At the same time, it saves the installation space of the fan mounting cavity and improves the space utilization rate. In addition, the cable is arranged as two sets of fan outlets in opposite directions. By reducing the length of the cable, the redundant length and bending range of the cable are reduced, thereby reducing cable damage. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram showing the connection between the fixed guide rail and the fan mounting bracket provided in this embodiment of the utility model; Figure 2 A top view of the fan mounting structure provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the structure of the fixed guide rail provided in an embodiment of the present utility model; Figure 4A schematic diagram showing the connection between the heat dissipation device and the electrical cabinet provided in this embodiment of the utility model; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 for Figure 4 Enlarged view of point B in the middle; Figure 7 A schematic diagram showing the connection between the limiting structure and the fan mounting bracket provided in this embodiment of the utility model; Figure 8 for Figure 7 Enlarged view of point C in the middle; Figure 9 A schematic diagram showing the connection between the first sealing plate and the cabinet body provided in this embodiment of the utility model; Figure 10 This is a schematic diagram showing the connection between the second sealing plate and the cabinet in an embodiment of the present utility model.

[0019] In the diagram: 10. Fixed guide rail; 11. Mounting flange; 12. Mounting part; 13. Covering part; 14. Support plate; 15. Clearance hole; 16. Fastener; 20. Movable frame; 21. Connecting parts; 22. Fixed edges; 23. Fan; 30. First sealing plate; 31. Second sealing plate; 32. Limiting structure. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] Please see Figures 1 to 10 The heat dissipation device and electrical cabinet provided by this utility model will now be described. The heat dissipation device includes a fixed guide rail 10 and a fan assembly; the fixed guide rail 10 is horizontally installed inside the electrical cabinet; the fan assembly includes a fan mounting bracket and two sets of fans 23, the fan mounting bracket is slidably mounted on the fixed guide rail 10; the two sets of fans 23 are sequentially installed on the fan mounting bracket, and the outgoing wires of the two sets of fans 23 are in opposite directions.

[0022] Two sets of fans 23 with reversed cable output are installed on the fan mounting frame. By changing the direction of their output, the length of the cables is reduced and the space for cable arrangement is reduced. This avoids the problems of cables being too long, redundantly bent, extending to the fixed structure, and being easily broken due to the vibration of the fans 23.

[0023] When the two sets of fans 23 face opposite outgoing cable directions, for ease of installation and maintenance, the outgoing cable direction of fans 23 should face both ends of the fan mounting cavity. During maintenance, after opening both ends of the fan mounting cavity, first disconnect the outgoing cables of the two sets of fans 23 from the cables inside the electrical cabinet, and then move the fan mounting bracket and fans 23 out to the traction end side. After maintenance, first move the fan mounting bracket and fans 23 back into the fan mounting cavity. After resetting, connect the connectors of the outgoing cables on both sides to the cables inside the electrical cabinet.

[0024] Compared with the prior art, the heat dissipation device provided by this utility model arranges the cables as two sets of fans 23 with reverse output. By reducing the length of the cables, the redundant length and bending range of the cables are reduced, thereby reducing cable damage. This utility model improves the fan heat dissipation device in the electrical cabinet from two directions: changing the cable arrangement and improving the installation structure. It effectively prevents the cables from being scratched and damaged during the installation and maintenance of the fans.

[0025] The fixed guide rail 10 has a horizontally extending inward folded edge structure on the side away from the cabinet panel; the folded edge structure has an installation structure for connecting the load-bearing frame inside the electrical cabinet; the installation structure includes a mounting part 12, a fastener 16, and a shielding part 13; the mounting part 12 is located on the outer edge of the folded edge structure; the fastener 16 connects the mounting part 12 and the load-bearing frame; the shielding part 13 is located on the inner edge of the folded edge structure, and the upper end of the shielding part 13 extends above the mounting part 12 to shield the mounting part 12 and the fastener 16.

[0026] The mounting structure is set on the folded edge structure; the mounting structure includes a mounting part 12, a fastener 16 and a shielding part 13. The mounting part 12 is located on the outer edge of the folded edge structure and is connected to the electrical cabinet by means of the fastener 16. The shielding part 13 is located on the inner edge of the folded edge structure and its upper end extends above the mounting part 12 to shield the mounting part 12 and the fastener 16.

[0027] The existing fan assembly is also slidably mounted on the fixed guide rail 10 using a fan mounting bracket. To install the fixed guide rail 10, a Z-shaped fold is provided at the upper end of the side of the fixed guide rail 10 away from the cabinet. Specifically, a first horizontal fold is made on one side panel of the U-shaped fixed guide rail 10, with the direction of the first horizontal fold facing the fan 23. The first horizontal fold is located at the upper end of the fan mounting bracket and is used for longitudinal positioning. Then, based on the first horizontal fold, it is folded upwards to form a first vertical fold, then folded outwards to the outside of the fixed guide rail 10, and finally folded upwards again to obtain a second vertical fold. The second vertical fold is parallel to the outer wall of the fixed guide rail 10; the second vertical fold is used to fit against the load-bearing frame inside the electrical cabinet. Holes are drilled in the second vertical fold, and bolts or other fastening structures are used to pass through these holes and connect to the load-bearing frame, completing the lateral installation of the fixed guide rail 10.

[0028] However, the existing fastening structure of the wind turbine components is located at the height of the wind turbine cable outlet, and the end of the fastening structure on the second vertical fold is exposed on the outside. When the wind turbine 23 is wired or under maintenance, the cable of the wind turbine 23 is prone to come into contact with and scrape against the fastening structure.

[0029] The proposed fixed guide rail 10 retains the existing guide rail structure. By changing the side mounting structure of the fixed guide rail 10, the problem of the fan 23 cable rubbing against the fastening structure mentioned above is avoided.

[0030] First, a folded edge structure is still provided on the fixed guide rail 10, which is the first transverse folded edge in the prior art. Then, a mounting part 12 and a shielding part 13 are arranged on the basis of the first transverse folded edge. The mounting part 12 is set on the folded edge structure by means of folding or welding, and the mounting part 12 is directly on the upper end face of the folded edge structure and is flush with the outer side wall of the fixed guide rail 10. A hole is drilled in the mounting part 12, and a fastener 16 is used to pass through the hole in the mounting part 12 to connect it to the load-bearing frame in the electrical cabinet. At this time, the mounting part 12 and the fastener 16 are both located below the conventional height of the fan 23 cable outlet. Next, a shielding part 13 is also arranged on the folded edge structure. The shielding part 13 is located on one side of the mounting part 12, and its upper end extends towards the side of the mounting part 12 until it covers the exposed ends of the mounting part 12 and the fastener 16.

[0031] It should be noted that the shielding part 13 is also a plate-like structure, which can be formed by folding or fixed to the upper end of the folded structure by welding. The shielding part 13 is spaced apart from the mounting part 12, forming a receiving space between them. This receiving space can accommodate the end of the fastener 16 exposed after passing through the hole in the mounting part 12, thus preventing the end of the fastener 16 from being exposed. In addition, the shielding part 13 is located on the inner edge of the folded structure, forming a smooth transition with the folded structure, which will not affect the installation of the fan 23.

[0032] Compared with the prior art, by directly setting the mounting part 12 of the fixed structure on the upper end face of the folded edge structure of the fixed guide rail, the connection height of the side mounting structure is reduced, so that the mounting part 12 and the fastener 16 connected to it are both located below the fan outlet. Under the influence of the height difference, the risk of cable scratching during installation and disassembly is effectively reduced. The shielding part 13 is located inside the mounting part 12 and extends to cover the mounting part 12 and the fastener 16, preventing the cable from bending redundantly and approaching the fastener 16 during movement. This further prevents the fastener 16 and the mounting part 12 from contacting the cable, reducing the risk of cable scratching.

[0033] In some possible embodiments, please refer to Figures 1 to 3The shielding part 13 includes a longitudinal shielding and a transverse shielding; the shielding is connected to the folded edge structure and extends upward, and the height of the longitudinal shielding is greater than the height of the mounting part 12; the transverse shielding is connected to the upper end of the longitudinal shielding and extends towards the mounting part 12 until it covers the mounting part 12.

[0034] The shielding part 13 is mounted on the folded edge structure and is spaced apart from the mounting part 12. The longitudinal shielding of the shielding part 13 is smoothly connected to the inner edge of the folded edge structure. The longitudinal shielding of the shielding part 13 is parallel to or at an angle to the mounting part 12.

[0035] Preferably, when the longitudinal shield is in a vertical state, it is parallel to the vertical mounting portion 12, and the transverse shield connected to the upper end of the longitudinal shield extends outward until it covers the mounting portion 12. Furthermore, the transverse shield can be connected perpendicularly or obliquely to the longitudinal shield, and the height of the transverse shield is greater than the height of the mounting portion 12.

[0036] When the longitudinal shield and the folded edge structure, as well as the longitudinal shield and the transverse shield, are all vertically connected, the folded edge structure, the longitudinal shield, and the transverse shield form a U-shaped support structure, with the mounting part 12 located at the open end of the U-shaped support structure. The end of the fastener 16 passes through the hole in the mounting part 12 and extends into the inner cavity of the U-shaped support structure.

[0037] The combination of longitudinal and lateral shielding not only covers the mounting section 12, preventing the edge of the upwardly extending mounting section 12 from directly contacting the cable of the fan 23, but also encloses a U-shaped support structure, keeping the end of the fastener 16 that passes through the mounting section 12 within the inner cavity of the U-shaped support structure, preventing the end of the fastener 16 from protruding, and further preventing the end of the fastener 16 from directly contacting the cable of the fan 23, thereby avoiding the problem of the cable rubbing during movement, and thus improving the service life and safety of the cable of the fan 23.

[0038] To facilitate the installation of the fastener 16, a clearance hole 15 is provided on the shielding part 13, located inside the mounting part 12. The clearance hole 15 can be a round hole or a square hole. The clearance hole 15 is provided on the longitudinal support or on the longitudinal support and the folded edge structure, that is, the lower end of the clearance hole 15 is located above the folded edge structure or extends to the folded edge structure, and the upper end of the clearance hole 15 is located below the transverse support, ensuring a smooth connection at the joint between the longitudinal support and the transverse support, and avoiding gaps that could scratch the cable.

[0039] It should be noted that after the fastener 16 is installed, its end must not protrude from the relief hole 15.

[0040] In some possible embodiments, please refer to Figure 3The fixed guide rail includes a base plate, two side plates, and ventilation holes; both ends of the base plate are connected to the side plates of the electrical cabinet; the two side plates are symmetrically arranged on both sides of the width direction of the base plate; the two side plates are perpendicular to the base plate and extend upward; the ventilation holes are opened on the base plate.

[0041] Both ends of the base plate are provided with downward-extending mounting flanges 11. These mounting flanges 11 can be L-shaped or U-shaped. The mounting flanges 11 are attached to the side plate of the electrical cabinet at the end of the fan mounting cavity and fixed with screws. A downward-extending support plate 14 is provided in the middle of the side of the base plate away from the load-bearing frame. The lower end of the support plate 14 is fixed to the lower end plate of the electrical cabinet with screws. The two ends of the base plate, together with the mounting part 12 and the support plate 14, form a four-way fixation, ensuring the installation stability of the fixed guide rail 10 and reducing the vibration frequency of the fixed guide rail 10.

[0042] The two side panels and the bottom panel are made of the same sheet material, with the two sides of the same sheet material forming the two side panels through folding. Furthermore, the folding is done using an upward bending method common in existing technology. The folding structure is formed by bending the two side panels inwards again.

[0043] Ventilation holes are formed on the base plate, and there can be one ventilation hole or multiple ventilation holes evenly arranged along the length. Ventilation holes not only facilitate the installation and operation of the fan 23, but also reduce the weight of the fixed guide rail 10, thereby reducing the weight of the fixed guide rail 10 and reducing the stress on each installation point.

[0044] Correspondingly, multiple flow holes are also arranged on the fan mounting bracket. The flow holes are connected to the ventilation holes to ensure the circulation of heat dissipation airflow of the fan 23.

[0045] like Figures 1 to 3 As shown, multiple mounting portions 12 are provided along the length of the fixed guide rail 10, and the multiple mounting portions 12 are spaced apart, and all of the multiple mounting portions 12 are flush with the side plate. The outer side wall of the mounting portion 12 is in contact with the outer side wall of the side plate, and the thickness of the mounting portion 12 is the same as the thickness of the outer side wall.

[0046] Optionally, the folded edge structure and the longitudinal shield are formed by folding the same plate. A U-shaped partition hole is made on the plate at the position corresponding to the folded edge structure and the longitudinal shield. The opening side of the U-shaped partition hole faces the side plate, and its end extends to the inward bend of the side plate. When the side plate folds inward to form the folded edge structure, the plate structure inside the U-shaped partition hole is retained, maintaining its upward extension and being on the same plane as the side plate. The plate structure outside the U-shaped partition hole forms the folded edge structure under the folding action and is then bent again to form the longitudinal shield. The depth of the U-shaped partition hole is less than the sum of the widths of the longitudinal shield and the folded edge structure. After bending, a clearance hole 15 is formed in the internal cavity of the U-shaped partition hole.

[0047] like Figures 1 to 2 As shown, the fan mounting bracket is movably mounted on the fixed guide rail 10 and is used to support the fan 23. The fan mounting bracket includes two movable frame bodies 20 and a connecting member 21. The two movable frame bodies 20 are spaced apart along the length direction, and both movable frame bodies 20 are slidably engaged with the fixed guide rail 10. The connecting member 21 detachably connects the two movable frame bodies 20. The two sets of fans 23 are respectively mounted on the two movable frame bodies 20, and the fans 23 exit in a direction away from the other set of fans 23.

[0048] The fan mounting frame consists of two movable frames 20, which divide the fan 23 into two groups. The two movable frames 20 are spaced apart to facilitate the individual disassembly and testing of the two groups of fans 23 and to ensure that there is sufficient space for installation and operation between the two groups of fans 23.

[0049] However, the wind turbine mounting bracket is pulled out towards the same side. Therefore, after disconnecting the cables at both ends, the two movable brackets 20 of the wind turbine mounting bracket are pulled out towards the same side. The connector 21 is used to connect the two movable brackets 20 to form a whole, avoiding interruption of the traction. The connector 21 can adopt a hinge, straight plate, or other structure.

[0050] When the connector 21 uses a hinge, the hinge's hinged structure can provide a small amount of movement space for the two movable frames 20, reducing vibration caused by errors. Furthermore, the hinge's screw fixing method makes assembly and disassembly convenient and easy to operate.

[0051] Both ends of the fan mounting bracket are connected to sealing plates. The two sealing plates are used to seal the two ends of the fan mounting cavity, and both sealing plates are connected to the side panels of the electrical cabinet. One sealing plate is fixed to the traction end of the fan mounting bracket. The other sealing plate is connected to the other end of the fan mounting bracket.

[0052] Two sets of fans 23 are respectively mounted on two movable frames 20, with the outgoing cables of the two sets of fans 23 facing the two sealing plates respectively. When removing the fans 23, first open the sealing plates on both sides, separate the cables of the fans 23 from the cables inside the electrical cabinet, and then pull out the traction end of the fan mounting bracket to test the two sets of fans 23. If replacement is required, the fans 23 can be replaced individually, or the combination of the fan sets 23 and the movable frames 20 can be replaced. When the entire combination needs to be disassembled, only the hinge connections need to be removed.

[0053] The sealing plates on both sides are divided into a first sealing plate 30 and a second sealing plate 31. The first sealing plate 30 is only connected to the side plate of the electrical cabinet and is used to seal one end of the fan mounting cavity. The second sealing plate 31 is connected to the side plate of the electrical cabinet and can also be connected to the traction end of the fan mounting frame to improve the stability of the fan mounting frame in the working state. The second sealing plate 31 can also be used to pull out the fan mounting frame.

[0054] If the second sealing plate 31 is connected to the fan mounting bracket by screws, when removing the fan 23, first remove the first sealing plate 30 and disconnect the fan 23 cable connector on one side of the first sealing plate 30; then open the limit switch on the side of the fan mounting bracket closest to the first sealing plate 30; then open the second sealing plate 31 and pull the fan mounting bracket out part of it. After removing the fan 23 cable connector on that side, completely remove the fan mounting bracket.

[0055] The limiting device on one side of the first sealing plate 30 is used to connect and position the free end of the fan mounting bracket. It can be a structure extending from the side plate of the electrical cabinet or a protrusion on the fixed guide rail 10. The limiting device and the fan mounting bracket can be fixed by screws or snap-fit.

[0056] This utility model also provides an electrical cabinet, such as Figures 4 to 10 The above-mentioned heat dissipation device is adopted. The electrical cabinet has a load-bearing frame in its inner cavity, and the fan mounting cavity is located on one side of the load-bearing frame. The mounting part 12 is attached to the load-bearing frame, and the fastener 16 passes through the mounting part 12 and is fixedly connected to the load-bearing frame.

[0057] The electrical cabinet has a crisscrossing support frame inside, with a load-bearing frame running along its length near the fan mounting cavity. This load-bearing frame can be made of strip steel plates or similar structures. Mounting holes are provided on the load-bearing frame, corresponding one-to-one with the holes on the mounting section 12. During installation, fasteners 16 pass through the mounting holes and mounting section 12 to mount the fixing rail 10 onto the load-bearing frame. Fasteners 16 can be bolts or similar structures.

[0058] Due to the structural changes of the installation section 12, the position of the load-bearing frame can be moved downwards accordingly, saving installation space in the fan installation cavity and freeing up installation space for other structures in the electrical cabinet above it, thus improving space utilization.

[0059] Compared with the prior art, the heat dissipation device provided by this utility model adopts the above-mentioned heat dissipation device. By changing the arrangement of the fixing structure of the fixed guide rail 10 in the heat dissipation device, the connection height of the side mounting structure is reduced, so that the mounting part 12 and its connected fasteners 16 are located below the fan outlet. Under the influence of the height difference, the risk of cable scratching during installation and disassembly is effectively reduced. At the same time, the installation space of the fan mounting cavity is saved, and the space utilization rate is improved. Meanwhile, the shielding part 13 prevents the cable from redundantly bending and approaching the fasteners 16 during movement, further preventing the fasteners 16 and the mounting part 12 from contacting the cable, reducing the risk of cable scratching. In addition, the cable is arranged with two sets of fans 23 exiting in opposite directions. By reducing the length of the cable, the redundant length and bending range of the cable are reduced, thereby reducing cable damage.

[0060] The bidirectional output of the cable can save on cable length, as well as cable cost and maintenance cost.

[0061] The sealing plate assembly on the electrical cabinet includes the aforementioned first sealing plate and second sealing plate, and the first and second sealing plates are respectively connected to the side panels of the electrical cabinet to seal the two end ports of the fan mounting cavity. One of the sealing plates is fixed to the traction end of the fan mounting bracket.

[0062] like Figure 7 , Figure 8 As shown, a limit structure 32 is also provided on the side of the electrical cabinet near the first sealing plate, such as... Figure 5 As shown, the limiting structure 32 and the side panel of the electrical cabinet on this side are the same plate. The end of the plate is folded and extended to position and connect the free end of the fan mounting bracket, so as to prevent it from shaking in the working state and improve the working stability.

[0063] The limiting structure 32 is an L-shaped bend, comprising a first extension section and a second extension section. The first extension section fits against the upper surface of the fixed guide rail 10, and the second extension section extends upward to abut against the free end of the fan mounting bracket. Bolt holes are provided on the second extension section, and it is fixed to the edge of the free end of the fan mounting bracket by bolts. Both ends of the corresponding fan mounting bracket in the length direction are provided with upwardly folded fixing edges 22. The fixing edge 22 at the traction end of the fan mounting bracket is used to connect the second sealing plate 31, and the fixing edge 22 at the free end of the fan mounting bracket is used to connect the aforementioned second extension section.

[0064] like Figure 5 As shown, on one side of the first sealing plate 30, the side panel of the electrical cabinet is directly attached to the mounting flange 11 of the fixed guide rail 10. The mounting flange 11 on this side is L-shaped and is located below the limiting structure 32.

[0065] like Figure 6 As shown, on one side of the second cover plate 31, the side panel of the electrical cabinet also has an inwardly extending positioning flange. This positioning flange is L-shaped, providing space for the installation of the second cover plate 31. Mounting holes are provided on the positioning flange, which is then attached to and bolted to another mounting flange 11 of the fixed guide rail 10. Bolts pass through the second cover plate 31, the positioning flange, and the mounting flange 11 in sequence, securing all three. During disassembly, the bolts must be removed to remove the second cover plate 31.

[0066] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A heat dissipating device installed in a fan mounting cavity of an electrical cabinet, characterized in that, include: A fixed guide rail (10) is horizontally installed inside the electrical cabinet; The fan assembly includes a fan mounting frame and two sets of fans (23). The fan mounting frame is slidably mounted on the fixed guide rail. The two sets of fans (23) are installed sequentially on the fan mounting frame, and the outgoing lines of the two sets of fans (23) are opposite. The fixed guide rail (10) has a horizontally extending inward folded edge structure on the side away from the cabinet panel; the folded edge structure is provided with an installation structure for connecting the load-bearing frame inside the electrical cabinet. The mounting structure includes: Mounting part (12), the mounting part (12) is provided on the outer edge of the folded structure; Fastener (16), the fastener (16) connects the mounting part (12) and the load-bearing frame; The shielding part (13) is provided on the inner edge of the folded structure, and the upper end of the shielding part (13) extends above the mounting part (12) to shield the mounting part (12) and the fastener (16).

2. The heat dissipating device of claim 1, wherein The shielding part (13) includes: The longitudinal shield is connected to the folded edge structure and extends upward, and the height of the longitudinal shield is greater than the height of the mounting part (12); A lateral shield is connected to the upper end of the longitudinal shield and extends toward the mounting portion (12) until it covers the mounting portion (12).

3. The heat dissipating device of claim 2, wherein The shielding part (13) is provided with a clearance hole (15), which corresponds to the mounting part (12).

4. The heat dissipating device of claim 1, wherein The fixed guide rail (10) includes: The base plate, both ends of which are connected to the side panels of the electrical cabinet; Two side plates are symmetrically arranged on both sides of the base plate in the width direction; the two side plates are perpendicular to the base plate and extend upward. Ventilation holes are provided on the base plate.

5. The heat dissipating device of claim 4, wherein The mounting part (12) is provided in multiple ways along the length of the fixed guide rail (10), and the multiple mounting parts (12) are spaced apart, and all of the multiple mounting parts (12) are flush with the side plate.

6. The heat dissipating device of claim 1, wherein The fan mounting bracket includes: Two movable frames (20) are arranged at intervals along the length direction, and both movable frames (20) are slidably engaged with the fixed guide rail (10); Connector (21) detachably connects the two movable frames (20); Two sets of fans (23) are respectively installed on the two movable frames (20), and the fans (23) are discharged in a direction away from the other set of fans (23).

7. An electrical cabinet, characterised in that The heat dissipation device as described in any one of claims 1-5 is adopted. The electrical cabinet has a load-bearing frame in its inner cavity, and the fan mounting cavity is located on one side of the load-bearing frame. The mounting part (12) is attached to the load-bearing frame, and the fastener (16) passes through the mounting part (12) and is fixedly connected to the load-bearing frame.

8. The electrical cabinet of claim 7, wherein, One end of the fan mounting cavity has a limiting structure (32), the fixed end of the limiting structure (32) is connected to the side plate of the electrical cabinet, the limiting structure (32) extends toward the fan mounting cavity, and the free end of the limiting structure (32) is connected to the free end of the fan mounting frame.

9. The electrical cabinet of claim 7, wherein, Also includes: The sealing plate assembly includes two sealing plates for sealing the two end ports of the fan mounting cavity, the sealing plates being connected to the side plate of the electrical cabinet, and either sealing plate being fixed to the traction end of the fan mounting frame.

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