Variable frequency cabinet dustproof and ratproof structure
By introducing rodent-proof structures and ultrasonic rodent repellers into the frequency converter cabinet, combined with turbine fans and filter screens, the problems of rodent and dust prevention are solved, achieving safe and efficient air circulation and heat dissipation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- VOLKSWAGEN FAW ENGINE DALIAN
- Filing Date
- 2025-09-01
- Publication Date
- 2026-07-21
AI Technical Summary
Existing inverter enclosures cannot prevent rodents from entering, the dust filter area is small, affecting ventilation and heat dissipation efficiency, and safety is insufficient.
The design incorporates a rodent-proof structure, including a dustproof net and an ultrasonic rodent repeller, combined with a turbine fan and a filter panel to achieve bottom-up airflow and heat dissipation.
It effectively prevents rats from entering, increases the dustproof area, improves ventilation and heat dissipation efficiency, and ensures safe and reliable heat dissipation.
Smart Images
Figure CN224522205U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of frequency converter cabinet technology, specifically to a dustproof and rodent-proof structure for frequency converter cabinets. Background Technology
[0002] High-voltage frequency converters are widely used in a wide range of fields such as large-scale mining plants, petrochemicals, municipal water supply, metallurgy, steel, and power energy. With the development of technology, high-frequency transformers have penetrated into various fields. Due to the requirements of the working environment, the enclosure, as one of the main load-bearing hardware components of the equipment, needs to have more technical advantages.
[0003] The specification of a dustproof structure for a high-voltage frequency converter enclosure (publication number CN213816894U) mentions that "a door handle is fixedly connected to the outside of the enclosure, a dustproof layer is bolted to the upper side of the enclosure, a dustproof net is provided on the inner wall of the dustproof layer, slide rails are bolted to both sides of the inner wall of the dustproof layer, the slide rails are slidably connected to the dustproof net for easy removal and cleaning during maintenance, a fan base is bolted to the top of the dustproof layer, an air outlet is fixedly provided in the center of the fan base, a support frame is welded to the inner wall of the air outlet, an axle is fixedly connected to the center of the support frame, a fan blade is movably connected to the top of the axle, and a pipe network device is fixedly connected inside the enclosure, the pipe network device is composed of a tee fitting and a pipe." However, the frequency converter enclosure in the prior art is not rodent-proof, the area of the dustproof net is small, which affects the simultaneous ventilation and heat dissipation, making it neither safe, efficient, nor practical. Utility Model Content
[0004] To overcome the shortcomings of existing technologies, a dustproof and rodent-proof structure for frequency converter cabinets is provided to solve the problems that existing frequency converter cabinets are not rodent-proof, the dustproof mesh area is small, affecting the simultaneous ventilation and heat dissipation, and are not safe, efficient and practical.
[0005] To achieve the above objectives, a dustproof and rodent-proof structure for a frequency converter cabinet is provided, comprising a rodent-proof structure and a central fixing plate. The rodent-proof structure is installed in the base at the bottom of the cabinet, and side fixing plates are fixed at both ends of the rodent-proof structure. Screw holes are provided on the side fixing plates, and fastening bolts are installed between the screw holes and the screw holes on the side of the base. A central fixing plate is installed in the middle of the rodent-proof structure, and a central support is provided in the middle of the central fixing plate. Three sets of first turbine fans are installed in the central support.
[0006] Furthermore, the top of the cabinet is provided with a top seat, and ventilation windows are provided on the upper part of the left and right sides of the cabinet. The cabinet is provided with a cabinet cavity, and two sets of side frame openings are provided on the left and right sides of the bottom of the cabinet.
[0007] Furthermore, an electrical component mounting bracket is installed inside the cabinet cavity, and the surface of the electrical component mounting bracket is densely covered with ventilation holes, and the electrical component mounting bracket is detachably connected to the cabinet body.
[0008] Furthermore, a central recess is provided in the middle of the inner bottom of the cabinet, and side recesses are provided on both the left and right sides of the inner bottom of the cabinet.
[0009] Furthermore, the lower part of the rodent-proof structure is provided with a dustproof net, and an ultrasonic rodent repeller is installed on the lower end face of the dustproof net. Both the left and right ends of the lower end face of the dustproof net are fixed with rodent-proof nets. The rodent-proof nets are blocked at the inner port of the side frame opening, and the rodent-proof structure is detachably connected to the base.
[0010] Furthermore, a second turbine fan is provided on both the left and right sides of the central fixed plate, and a side air guide channel is provided at the upper end of the second turbine fan, while a central air guide channel is provided on the upper side of the first turbine fan.
[0011] Furthermore, a central filter plate is fixed at the upper end of the central air guide channel, the central filter plate being fitted into the central inlet, and a side filter plate is provided at the upper end of the side air guide channel, the side filter plate being fitted into the side inlet.
[0012] The beneficial effects of this utility model are as follows: 1. The electrical component mounting rack inside the cabinet cavity of this utility model is easy to move in and out, and facilitates ventilation and heat dissipation. In addition, the lower part of the left and right sides of the base is provided with side frame openings, which facilitates the dissipation of heat from bottom to top between the side recesses, central recesses and ventilation windows at the bottom of the cabinet, making it more convenient and time-saving.
[0013] 2. The rodent-proof structure in this utility model is not only easy and convenient to install, but also easy to disassemble quickly. It uses an ultrasonic rodent repeller to prevent rats from climbing up and entering, and uses a dustproof net for dust protection, making it safer and more practical.
[0014] 3. The fixed plate in this utility model is designed to use the rotation of the second turbine fan and the first turbine fan to introduce external airflow into the base. After being filtered by the dustproof net, side filter screen and middle filter screen, the airflow is transported into the cabinet, which facilitates the heat dissipation from bottom to top, making heat dissipation safe and convenient. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the interior of the cabinet according to an embodiment of the present utility model; Figure 2 This is a front view of the rodent-proof structure and the middle fixing plate installed together according to an embodiment of the present utility model; Figure 3 This is a right-side view of the rodent-proof structure and the middle fixing plate installed together according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the rodent-proof structure according to an embodiment of the present invention; Figure 5 This is a bottom view of the fixing plate in an embodiment of the present utility model.
[0016] In the diagram: 1. Cabinet body; 10. Top base; 11. Ventilation window; 12. Electrical component mounting bracket; 13. Cabinet cavity; 14. Side recess; 15. Central recess; 16. Base; 17. Side frame opening; 2. Fastening bolts; 3. Rodent-proof structure; 30. Screw holes; 31. Side fixing plate; 32. Dustproof net; 33. Ultrasonic rodent repeller; 34. Rodent-proof net; 4. Central fixing plate; 40. First turbine fan; 41. Central bracket; 42. Second turbine fan; 43. Side air guide channel; 44. Side filter plate; 45. Central air guide channel; 46. Central filter plate. Detailed Implementation
[0017] 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. The specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. Specific details such as particular system structures and technologies are provided to facilitate a more thorough understanding of the embodiments of this utility model. The described embodiments are some, but not all, of the embodiments disclosed herein. However, those skilled in the art should understand that the present utility model can also be implemented in other embodiments without these specific details. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without inventive effort are within the scope of protection of this disclosure.
[0018] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.
[0019] Figure 1 This is a schematic diagram of the interior of the cabinet according to an embodiment of the present utility model. Figure 2 This is a front view of the rodent-proof structure and the middle fixing plate installed together according to an embodiment of the present invention. Figure 3 Right view of the rodent-proof structure and the middle fixing plate installed together in this embodiment of the utility model. Figure 4 This is a schematic diagram of the rodent-proof structure according to an embodiment of the present invention. Figure 5 This is a bottom view of the fixing plate in an embodiment of the present utility model.
[0020] Reference Figures 1 to 5As shown, this utility model provides a dustproof and rodent-proof structure for a frequency converter cabinet, including a rodent-proof structure 3 and a central fixing plate 4. The rodent-proof structure 3 is installed in the base 16 at the bottom of the cabinet 1, and side fixing plates 31 are fixed at both ends of the rodent-proof structure 3. The side fixing plates 31 are provided with screw holes 30, and fastening bolts 2 are installed between the screw holes 30 and the screw holes on the side of the base 16. The central fixing plate 4 is installed in the middle of the rodent-proof structure 3, and a central support 41 is provided in the middle of the central fixing plate 4. Three sets of first turbine fans 40 are installed in the central support 41.
[0021] In this embodiment, a top seat 10 is provided on the top of the cabinet 1, and ventilation windows 11 are provided on the upper part of the left and right sides of the cabinet 1. A cabinet cavity 13 is provided inside the cabinet 1, and two sets of side frame openings 17 are provided on the left and right sides of the bottom of the cabinet 1. An electrical component mounting bracket 12 is installed in the cabinet cavity 13, and the surface of the electrical component mounting bracket 12 is densely covered with ventilation holes. The electrical component mounting bracket 12 is detachably connected to the cabinet 1. A central recess 15 is provided in the middle of the inner bottom of the cabinet 1, and side recesses 14 are provided on the left and right sides of the inner bottom of the cabinet 1.
[0022] As a preferred embodiment, the electrical component mounting bracket 12 inside the cabinet cavity 13 of this utility model is easy to move in and out, and facilitates ventilation and heat dissipation. In addition, the lower part of the left and right sides of the base 16 is provided with side frame openings 17, which facilitates the dissipation of heat from bottom to top between the side inset openings 14, the middle inset opening 15 and the ventilation window 11 provided at the bottom of the cabinet body 1, making it more convenient and time-saving.
[0023] In this embodiment, a dustproof net 32 is provided at the lower part of the rodent-proof structure 3, and an ultrasonic rodent repeller 33 is installed on the lower end face of the dustproof net 32. Rodent-proof nets 34 are fixed at both the left and right ends of the lower end face of the dustproof net 32. The rodent-proof nets 34 are blocked at the inner port of the side frame opening 17, and the rodent-proof structure 3 is detachably connected to the base 16.
[0024] As a preferred embodiment, the rodent-proof structure 3 in this utility model is not only easy and convenient to install, but also easy to disassemble quickly. It uses ultrasonic rodent repellent 33 to repel rodents safely and reliably, preventing rodents from climbing up and entering. It is also protected from dust by dustproof net 32, making it safer and more practical.
[0025] In this embodiment, a second turbine fan 42 is provided on both the left and right sides of the central fixed plate 4. A side air guide channel 43 is provided at the upper end of the second turbine fan 42, and a central air guide channel 45 is provided on the upper side of the first turbine fan 40. A central filter plate 46 is fixed at the upper end of the central air guide channel 45 and is fitted into the central recess 15. A side filter plate 44 is provided at the upper end of the side air guide channel 43 and is fitted into the side recess 14.
[0026] As a preferred embodiment, the fixed plate 4 in this utility model is designed to utilize the rotation of the second turbine fan 42 and the first turbine fan 40 to introduce external airflow into the base 16. After being filtered by the dustproof net 32, the side filter plate 44 and the middle filter plate 46, the airflow is transported into the cabinet 1, facilitating heat dissipation from bottom to top, ensuring safe and convenient heat dissipation.
[0027] This invention effectively solves the problems of existing inverter cabinets not being rodent-proof, having small dustproof nets that affect ventilation and heat dissipation, and being neither safe nor efficient. This invention uses ultrasonic rodent deterrence, which is safer, more convenient, and more reliable. It can also provide large-area dustproof ventilation and heat dissipation, helping to drive the flow of cold air from the outside to dissipate heat from the inside of the inverter cabinet, making it safer, more efficient, and more practical.
[0028] The above embodiments are used to explain and illustrate the present utility model, and not to limit the utility model. Any modifications and changes made to the present utility model within the spirit and scope of the claims should be included within the protection scope of the present utility model.
Claims
1. A dustproof and rodent-proof structure for a frequency converter cabinet, characterized in that: The system includes a rodent-proof structure (3) and a central fixing plate (4). The rodent-proof structure (3) is installed in the base (16) at the bottom of the cabinet (1). Both the left and right ends of the rodent-proof structure (3) are fixed with side fixing plates (31). The side fixing plates (31) are provided with screw holes (30), and fastening bolts (2) are installed between the screw holes (30) and the screw holes on the side of the base (16). The central fixing plate (4) is installed in the middle of the rodent-proof structure (3), and a central support (41) is provided in the middle of the central fixing plate (4). Three sets of first turbine fans (40) are installed in the central support (41).
2. The dustproof and rodent-proof structure for a frequency converter cabinet according to claim 1, characterized in that, The top of the cabinet (1) is provided with a top seat (10), and ventilation windows (11) will be provided on the upper part of the left and right sides of the cabinet (1). The cabinet (1) has a cabinet cavity (13) and two sets of side frame openings (17) are provided on the left and right sides of the bottom of the cabinet (1).
3. The dustproof and rodent-proof structure for a frequency converter cabinet according to claim 2, characterized in that, An electrical component mounting bracket (12) is installed inside the cabinet cavity (13), and the surface of the electrical component mounting bracket (12) is covered with ventilation holes. The electrical component mounting bracket (12) is detachably connected to the cabinet body (1).
4. The dustproof and rodent-proof structure for a frequency converter cabinet according to claim 1, characterized in that, The cabinet (1) has a central recess (15) at the bottom center and side recesses (14) at the bottom left and right sides.
5. The dustproof and rodent-proof structure for a frequency converter cabinet according to claim 1, characterized in that, The lower part of the rodent-proof structure (3) is provided with a dustproof net (32), and an ultrasonic rodent repeller (33) is installed on the lower end face of the dustproof net (32). Both the left and right ends of the lower end face of the dustproof net (32) are fixed with rodent-proof nets (34). The rodent-proof nets (34) are blocked at the inner port of the side frame opening (17), and the rodent-proof structure (3) and the base (16) are connected separately.
6. The dustproof and rodent-proof structure for a frequency converter cabinet according to claim 1, characterized in that, The middle fixed plate (4) is provided with a second turbine fan (42) on both the left and right sides. The upper end of the second turbine fan (42) is provided with a side air guide channel (43), and the upper side of the first turbine fan (40) is provided with a middle air guide channel (45).
7. The dustproof and rodent-proof structure for a frequency converter cabinet according to claim 6, characterized in that, The upper end of the central air guide channel (45) is fixed with a central filter plate (46), which is fitted into the central inlet (15). The upper end of the side air guide channel (43) is provided with a side filter plate (44), which is fitted into the side inlet (14).