Air duct structure of inverter

Abstract

The utility model relates to the technical field of air ducts, and discloses an air duct structure of an inverter, which comprises an inverter box body, box body cross beams arranged at two sides of the inverter box body, a top telescopic air duct arranged at the upper part in the inverter box body, a power module air duct arranged below the top telescopic air duct, and a power module air duct arranged at the bottom of the power module air duct, and the air duct guide rail supporting beam is fixed in the inverter box body. According to the utility model, through the layout design of the integral air duct structure formed by sequentially connecting the top telescopic air duct, the power module air duct, the drawer type fan air duct and the bottom connecting air duct, the air duct of a heating element can be positioned in an independent space, so that heat dissipated by other components in the case is prevented from being sucked into the air duct by a fan; and meanwhile, the inverter adopting the layout adopts a hook type connection design, so that the inverter is convenient to disassemble and assemble, the maintenance efficiency can be greatly improved, and the maintenance cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of air duct technology, and in particular to an air duct structure for an inverter. Background Technology

[0002] The inverter's cooling ducts are primarily used to cool the IGBT power modules, ensuring the proper functioning of these heat-generating electronic components. However, in everyday use, due to the internal space layout of the chassis, the airflow for these heat-generating components is not in a dedicated space. This results in heat dissipated from other components within the chassis being drawn into the cooling ducts by the turbine fans, significantly impacting the IGBT module's cooling performance. Furthermore, inverters with this layout are prone to power module damage due to overheating and damage to the cooling fan assembly due to excessive use. In such cases, the simple bolt-connected structure greatly reduces maintenance efficiency and, conversely, increases maintenance costs. Utility Model Content

[0003] The purpose of this invention is to solve the problems existing in the prior art by proposing a duct structure for an inverter.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An inverter duct structure includes an inverter housing, housing beams on both sides of the inverter housing, a top telescopic duct located above the interior of the inverter housing, a power module duct located below the top telescopic duct, a duct guide rail support beam located at the bottom of the power module duct and fixed inside the inverter housing, a drawer-type fan duct located at the bottom of the duct guide rail support beam, and a bottom connecting duct located in the drawer-type fan duct.

[0006] Preferably, the top telescopic air duct includes a top connecting air duct, a bolt-type clamp hook installed on the outside of the top connecting air duct, a top telescopic frame installed on the top of the top connecting air duct, and a tension spring disposed on the inside of the top telescopic frame.

[0007] Preferably, the power module air duct includes a radiator air duct, a radiator installed on the surface of the radiator air duct, a power module disposed on the other side of the radiator, clamp mounting plates installed at both ends of the radiator air duct, bolt-type clamps installed on the clamp mounting plates, stainless steel hump handles installed below both sides of the radiator air duct, and a track support plate installed at the bottom of the surface of the radiator air duct, wherein the bolt-type clamps are adapted to bolt-type clamp hooks.

[0008] Preferably, the air duct guide rail support beam includes a front guide rail support beam, a rear guide rail support beam, and a power module mounting rail installed on the top of the front and rear guide rail support beams. The front and rear guide rail support beams are fixedly connected to the box crossbeams by bolts, and the track plate is connected to the power module mounting rail by bolts.

[0009] Preferably, the drawer-type fan duct includes a drawer duct box, an intermediate telescopic frame installed on the top of the drawer duct box, an intermediate connecting duct set on the top of the intermediate telescopic frame, a movable drawer passing through one side of the drawer duct box, a centrifugal fan set on the movable drawer, and a bolt-type clamp hook installed on the side of the intermediate connecting duct.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention, through its integrated air duct structure design consisting of a top telescopic air duct, a power module air duct, a drawer-type fan air duct, and a bottom connecting air duct, allows the air duct for the heat-generating components to be in an independent space. This prevents heat dissipated by other components inside the chassis from being drawn into the air duct by the fan, thus avoiding significant impact on the heat dissipation effect of the power module. Furthermore, the inverter using this layout employs a hook-type connection design, facilitating disassembly and assembly, greatly improving maintenance efficiency and reducing maintenance costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the top telescopic air duct of this utility model;

[0014] Figure 3 This is a schematic diagram of the air duct structure of the power module of this utility model;

[0015] Figure 4 This is a schematic diagram of the structure of the air duct guide rail support beam of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the drawer-type fan duct of this utility model;

[0017] Figure 6 This is a schematic diagram of the bottom connecting air duct of this utility model.

[0018] In the diagram: 1. Inverter enclosure; 2. Enclosure beam; 3. Top telescopic air duct; 4. Power module air duct; 5. Air duct guide rail support beam; 6. Drawer-type fan air duct; 7. Bottom connecting air duct; 301. Top connecting air duct; 302. Door bolt type clamp hook; 303. Tension spring; 304. Top telescopic frame; 401. Power module; 402. Clamp mounting plate; 403. Door bolt type clamp; 404. Power module heatsink air duct; 405. Power module heatsink. ; 406, Stainless steel hump handle; 407, Power module radiator air duct track support plate; 501, Front guide rail support beam; 502, Rear guide rail support beam; 503, Power module mounting rail; 302, Door bolt type clamp hook; 406, Stainless steel hump handle; 601, Fan terminal block; 602, Centrifugal fan; 603, Movable drawer; 604, Drawer air duct box; 605, Middle telescopic frame; 606, Middle connecting air duct; 7, Bottom connecting air duct. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] An inverter duct structure includes an inverter housing 1, a housing beam 2, a top telescopic duct 3, a power module duct 4, a duct guide rail support beam 5, a drawer-type fan duct 6, and a bottom connecting duct 7.

[0021] See Figure 1 , Figure 2 The top telescopic air duct 3 includes a top connecting air duct 301, a latch-type clamp hook 302, a tension spring 303, and a top telescopic frame 304. The top connecting air duct 301 of the top telescopic air duct 2 is fixedly connected to the top telescopic frame 304 by bolts; the tension spring 303 is fixed by hooking onto the pre-made openings on the upper and lower plates of the top telescopic frame 304. The number and specifications of the tension springs 303 should be selected according to the required tightening force. The tension springs 303 are used to provide the force for the top telescopic frame 304 to tighten up and down; the latch-type clamp hook 302 is fixed to the front and rear sides of the top connecting air duct 301 with countersunk bolts and is used as a fastener; the entire top telescopic air duct 3 is fixed to the lower side of the upper top plate of the inverter housing 1 by bolts.

[0022] See Figures 1 to 3 The power module air duct 4 includes a power module 401, a clamp mounting plate 402, a bolt-type clamp 403, a power module radiator air duct 404, a power module radiator 405, a stainless steel hump handle 406, and a power module radiator air duct track support plate 407.

[0023] The power module heat sink duct 404 is fixedly connected to the power module heat sink 405 with bolts to form the main body of the power module heat sink 4. Thermal grease is evenly applied to the power module heat sink 405, and then the power module 401 is fastened to the power module heat sink 405 with bolts to the standard torque, ensuring that a thin layer of thermal grease is evenly overflowed around the contact surface of the power module 401 to effectively prevent excessive thermal resistance. The upper and lower parts of the left and right sides of the power module heat sink duct 404 are connected and fixed with clamp mounting plates 402 with bolts. The lower middle part of the left and right sides of the power module heat sink duct 404 is connected and fixed with stainless steel hump handles 406 with bolts. The door bolt clamp 403 is connected and fastened to the clamp mounting plate 402 that has been installed before with bolts. The power module heat sink duct track support plate 407 is fixed to the bottom of the power module heat sink duct 404 with bolts.

[0024] See Figures 1 to 4 The air duct guide rail support beam 5 includes a front guide rail support beam 501, a rear guide rail support beam 502, and a power module mounting rail 503. The front guide rail support beam 501 and the rear guide rail support beam 502 are respectively fixedly connected to the box body cross beam 2 by bolts; the power module mounting rail 503 is then fixedly connected to the front guide rail support beam 501 and the rear guide rail support beam 502 by bolts. During installation, the power module air duct 4 is placed on the electric lifting device, and the lifting device is moved to the air duct installation position of the inverter box body 1. The lifting device is slowly raised until the two folded edges of the power module radiator air duct rail support plate 407 are slightly higher than the upper edge of the power module mounting rail 503. The operator holds the stainless steel hump handle 406 on one side of the power module air duct 4 and slowly pushes the air duct in the correct direction. If necessary, an additional worker can be added on the other side to pull the stainless steel hump handle 406 in the direction of air duct insertion to assist the air duct in reaching the correct installation position. When the fixing hole on the folded edge of the power module heat sink air duct track plate 407 is concentric with the threaded hole on the power module mounting guide rail 503, the air duct has reached the correct position and is fastened with bolts. Finally, the latch-type clamps 403 on the left and right sides of the power module air duct 4 and the latch-type clamp hooks 302 on the top telescopic air duct 3 are overlapped and fastened. At this point, the upper part of this air duct structure is installed.

[0025] See Figures 1 to 6The drawer-type fan duct 6 includes a latch-type clamp hook 302, a stainless steel hump handle 406, a fan terminal block 601, a centrifugal fan 602, a movable drawer 603, a drawer duct box 604, an intermediate telescopic frame 605, and an intermediate connecting duct 606. The drawer duct box 604 and the intermediate telescopic frame 605 are fastened together by bolts; the intermediate telescopic frame 605 and the intermediate connecting duct 606 are fastened together by bolts; the front and rear sides of the intermediate connecting duct 606 are fastened together by countersunk bolts and latch-type clamp hooks 302; the stainless steel hump handle 406 and the movable drawer 603 are fastened together by bolts; four sets of centrifugal fans 602 are hoisted into the movable drawer 603 in the downward airflow direction, and the necessary connections are made using cable ties. The connected wiring is led to the fan terminal 601 and connected to the terminal according to the correct wiring method. Before officially connecting to the internal power supply of the inverter, the fan function is tested with an external power supply to ensure it is working properly. The drawer duct box 604 is bolted to the underside of the front guide rail support beam 501 and the rear guide rail support beam 502. The assembled movable drawer 603 is pushed into the equally assembled drawer duct box 604 and bolted together. The latch-type clamp hooks 302 on the front and rear sides of the middle connecting duct 606 and the latch-type clamps 403 on the left and right sides of the power module duct 4 are overlapped and fastened together. Finally, the bottom connecting duct 7 is bolted together and fastened to the drawer duct box 604 and the bottom plate of the inverter housing 1 respectively. The entire duct installation is now complete.

[0026] Compared to existing technologies, this air duct structure, through its overall air duct layout design that sequentially connects the top telescopic air duct 3, the power module air duct 4, the drawer-type fan air duct 6, and the bottom connecting air duct 7, allows the air duct of the heat-generating components to be in an independent space. This prevents heat dissipated by other components inside the chassis from being drawn into the air duct by the fan, thus avoiding a significant impact on the heat dissipation effect of the power module. At the same time, the inverter with this layout adopts a hook-type connection design, which is convenient for disassembly and assembly, greatly improving maintenance efficiency and reducing maintenance costs.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A duct structure for an inverter, characterized in that: It includes an inverter enclosure, enclosure beams on both sides of the inverter enclosure, a top telescopic air duct located above the inside of the inverter enclosure, a power module air duct located below the top telescopic air duct, an air duct guide rail support beam located at the bottom of the power module air duct and fixed inside the inverter enclosure, a drawer-type fan air duct located at the bottom of the air duct guide rail support beam, and a bottom connecting air duct located in the drawer-type fan air duct.

2. The air duct structure of an inverter according to claim 1, characterized in that: The top telescopic air duct includes a top connecting air duct, a bolt-type clamp hook installed on the outside of the top connecting air duct, a top telescopic frame installed on the top of the top connecting air duct, and a tension spring installed on the inside of the top telescopic frame.

3. The air duct structure of an inverter according to claim 2, characterized in that: The power module air duct includes a radiator air duct, a radiator installed on the surface of the radiator air duct, a power module located on the other side of the radiator, clamp mounting plates installed at both ends of the radiator air duct, bolt-type clamps installed on the clamp mounting plates, stainless steel hump handles installed below both sides of the radiator air duct, and a track support plate installed at the bottom of the radiator air duct surface. The bolt-type clamps are adapted to bolt-type clamp hooks.

4. The air duct structure of an inverter according to claim 3, characterized in that: The air duct guide rail support beam includes a front guide rail support beam, a rear guide rail support beam, and a power module mounting rail installed on the top of the front and rear guide rail support beams. The front and rear guide rail support beams are fixedly connected to the box crossbeams by bolts, and the track plate is connected to the power module mounting rail by bolts.

5. The air duct structure of an inverter according to claim 1, characterized in that: The drawer-type fan duct includes a drawer duct box, an intermediate telescopic frame installed on the top of the drawer duct box, an intermediate connecting duct set on the top of the intermediate telescopic frame, a movable drawer passing through one side of the drawer duct box, a centrifugal fan set on the movable drawer, and a bolt-type clamp hook installed on the side of the intermediate connecting duct.

Images