Improved dustproof and rainproof exhaust fan
By designing protective components and heating elements on the exhaust fan, the louvers can be sealed when not in use and thawed in cold weather, solving the problem of dust and rain protection when the exhaust fan is not running and improving the safety and reliability of the equipment.
Patent Information
- Application Number
- CN202520124148.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-01-20
AI Technical Summary
When the existing exhaust fans stop operating, rain, snow, and dust can easily enter, causing indoor equipment malfunctions and affecting the safe operation of the facilities.
A protective assembly was designed, including an electric telescopic rod, a push rod, a rotating seat, and louvers. The electric telescopic rod is driven to raise the push rod, which in turn raises the rotating seat, which in turn seals the louvers to prevent dust and rainwater from entering. In cold weather, a heating element thaws the louvers, ensuring that they can be opened when needed.
It effectively prevents dust and rainwater from entering the exhaust fan, ensuring safe operation of the equipment, reducing the risk of electrical facility failure, and meeting ventilation and heat dissipation requirements.
Smart Images
Figure CN223896233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of equipment room ventilation technology, specifically an improved dustproof and rainproof exhaust fan. Background Technology
[0002] Currently, exhaust fans are used in various power plant power distribution rooms and equipment rooms, serving as crucial equipment for maintaining air circulation and freshness within these spaces. They are indispensable in the production operations of power companies. Existing exhaust fan technology utilizes axial flow fans to rotate blades, drawing air into the fan and then expelling it from the outlet to achieve ventilation.
[0003] Existing exhaust fans are generally cylindrical in shape, consisting of an outer frame, a motor, and fan blades fixed to the motor shaft. The outer frame is a drawn metal piece with a cylindrical inner ring, and the drawn metal piece is fixed to the outer frame. The motor is also fixed to the drawn metal piece. The fan blades are located inside the outer frame and are covered by a cylindrical fan blade cover that is connected and fixed to the motor shaft. Because the exhaust vent of the exhaust fan opens to the outside, rain, snow, and dust can easily enter when the exhaust fan is not running, causing indoor equipment malfunctions and seriously affecting the safe operation of indoor facilities. Utility Model Content
[0004] The purpose of this utility model is to provide an improved dustproof and rainproof exhaust fan, which solves the problem mentioned in the background art that when the exhaust fan equipment stops operating, rain, snow and dust can easily enter, causing indoor equipment failure and seriously affecting the safe operation of indoor facilities.
[0005] This application provides an improved dustproof and rainproof exhaust fan, including a fixed frame. A protective component is provided on the fixed frame. The protective component includes an electric telescopic rod. A push rod is fixedly connected to the telescopic end of the electric telescopic rod. Multiple sets of first rotating seats are fixedly connected to the outer wall of the push rod. A movable plate is rotatably connected to the first rotating seat. A second rotating seat is rotatably connected to the other end of the movable plate. A louver is fixedly connected to the outer wall of the second rotating seat. A rotating rod is fixedly connected inside the louver.
[0006] By adopting the above technical solution, when the exhaust fan body is not in use, the drive electric telescopic rod drives the push rod to rise. When in operation, the push rod drives the first rotating seat to rise, the first rotating seat drives the moving plate and the second rotating seat to rise, the moving plate rotates on the first and second rotating seats, and the second rotating seat drives the louvers to rise and seal. The louvers seal the exhaust fan body to prevent dust and rainwater from entering the exhaust fan body. When the weather is cold, the louvers freeze, and the drive heating tube heats up to thaw the louvers. When the exhaust fan body is ventilating, the louvers open.
[0007] Optionally, the rotating rod passes through the louver, and both ends of the rotating rod are rotatably connected to the fixed frame.
[0008] By adopting the above technical solution, the louvers can be rotated.
[0009] Optionally, a heating tube is fixedly connected inside the fixed frame, and an exhaust fan body is fixedly connected to the fixed frame.
[0010] By adopting the above technical solution, the louvers are heated, enhancing their overall practicality.
[0011] Optionally, a fixing rod is fixedly connected to the inner wall of the exhaust fan body, a motor is fixedly connected to the lower end of the fixing rod, a transmission rod is fixedly connected to the output end of the motor, and exhaust fan blades are fixedly connected to the outside of the transmission rod.
[0012] By adopting the above technical solution, the exhaust fan rotates.
[0013] Optionally, the number of heating tubes is multiple sets, and the left and right ends of the multiple sets of heating tubes are fixedly connected to the fixed frame.
[0014] By adopting the above technical solution, the frozen louvers can be thawed.
[0015] Optionally, the number of louvers can be multiple sets.
[0016] By adopting the above technical solution, the main body of the exhaust fan can be kept sealed.
[0017] Optionally, an exhaust vent is provided inside the fixed frame.
[0018] By adopting the above technical solution, it is easier for the exhaust fan body to exhaust air.
[0019] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:
[0020] This technical solution utilizes an electric telescopic rod to raise the exhaust fan body when it is not in use. During operation, the push rod raises the first rotating seat, which in turn raises the moving plate and the second rotating seat. The moving plate rotates on the first and second rotating seats, causing the louvers to rise and seal the exhaust fan body, preventing dust and rainwater from entering. In cold weather, the louvers freeze, and a heating element thaws them. When the exhaust fan body is ventilating, the louvers open. This design simultaneously satisfies the ventilation and heat dissipation needs of the power distribution room and the safe operation of indoor equipment. Through these improved designs, the performance and reliability of the dustproof and rainproof exhaust fan can be effectively enhanced, reducing the risk of electrical facility failures and ensuring safe equipment operation. Attached Figure Description
[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0022] Figure 1 This is a schematic diagram of the overall structure of an improved dustproof and rainproof exhaust fan according to the present invention;
[0023] Figure 2 This is a schematic diagram of the rotating rod structure of an improved dustproof and rainproof exhaust fan according to this utility model;
[0024] Figure 3 This is a schematic diagram of structure A of an improved dustproof and rainproof exhaust fan according to the present invention;
[0025] Figure 4 This is a schematic diagram of the heating tube structure of an improved dustproof and rainproof exhaust fan according to this utility model.
[0026] Figure 5 This is a schematic diagram of the main structure of an improved dustproof and rainproof exhaust fan according to the present invention;
[0027] Figure 6 This utility model relates to an improved dustproof and rainproof exhaust fan. Figure 3 Enlarged schematic diagram of the structure at point A in the middle.
[0028] In the diagram: 1. Fixed frame; 2. Protective components; 201. Electric telescopic rod; 202. Rotating rod; 203. Louver; 204. Push rod; 205. First rotating seat; 206. Moving plate; 207. Second rotating seat; 3. Exhaust fan body; 4. Fixed rod; 5. Motor; 6. Transmission rod; 7. Exhaust fan blades; 8. Heating tube. Detailed Implementation
[0029] Please see Figure 1-6 This utility model provides a technical solution: an improved dustproof and rainproof exhaust fan, including a fixed frame 1, a protective component 2 on the fixed frame 1, the protective component 2 including an electric telescopic rod 201, a push rod 204 fixedly connected to the telescopic end of the electric telescopic rod 201, multiple sets of first rotating seats 205 fixedly connected to the outer wall of the push rod 204, a movable plate 206 rotatably connected to the first rotating seat 205, a second rotating seat 207 rotatably connected to the other end of the movable plate 206, a louver 203 fixedly connected to the outer wall of the second rotating seat 207, and a rotating rod 202 fixedly connected inside the louver 203.
[0030] In the above technical solution, when the exhaust fan body 3 is not in use, the drive electric telescopic rod 201 drives the push rod 204 to rise. When in operation, the push rod 204 drives the first rotating seat 205 to rise, the first rotating seat 205 drives the moving plate 206 and the second rotating seat 207 to rise, the moving plate 206 rotates on the first rotating seat 205 and the second rotating seat 207, and the second rotating seat 207 drives the louver 203 to rise and seal. The louver 203 seals the exhaust fan body 3 to prevent dust and rainwater from entering the interior of the exhaust fan body 3. When the weather is cold, the louver 203 freezes, and the drive heating tube 8 heats it to thaw the louver 203. When the exhaust fan body 3 exhausts air, the louver 203 opens.
[0031] In the technical solution of this utility model, such as Figure 2 As shown, the rotating rod 202 passes through the louver 203, and both ends of the rotating rod 202 are rotatably connected to the fixed frame 1 to ensure that the louver 203 can rotate.
[0032] In the technical solution of this utility model, such as Figure 1 and Figure 4 As shown, a heating tube 8 is fixedly connected inside the fixed frame 1, and an exhaust fan body 3 is fixedly connected to the fixed frame 1 to heat the louvers 203 and enhance the overall practicality.
[0033] In the technical solution of this utility model, such as Figure 5 As shown, a fixing rod 4 is fixedly connected to the inner wall of the fan body 3, a motor 5 is fixedly connected to the lower end of the fixing rod 4, a transmission rod 6 is fixedly connected to the output end of the motor 5, and an exhaust fan blade 7 is fixedly connected to the outside of the transmission rod 6, so that the exhaust fan can rotate.
[0034] In the technical solution of this utility model, such as Figure 4 As shown, there are multiple sets of heating tubes 8, and the left and right ends of the multiple sets of heating tubes 8 are fixedly connected to the fixed frame 1 to thaw the frozen louvers 203.
[0035] In the technical solution of this utility model, such as Figure 2 As shown, there are multiple sets of louvers 203 to ensure continued sealing of the exhaust fan body 3.
[0036] In the technical solution of this utility model, such as Figure 1 As shown, the fixed frame 1 has an exhaust vent inside, which facilitates the exhaust fan body 3 to exhaust air.
[0037] When in use, when the exhaust fan body 3 is not in use, the electric telescopic rod 201 drives the push rod 204 to rise. The push rod 204 drives the first rotating seat 205 to rise. The first rotating seat 205 drives the moving plate 206 and the second rotating seat 207 to rise. The moving plate 206 rotates on the first rotating seat 205 and the second rotating seat 207. The second rotating seat 207 drives the louver 203 to rise and seal. The louver 203 seals the exhaust fan body 3 to prevent dust and rainwater from entering the interior of the exhaust fan body 3. When the weather is cold, the louver 203 freezes. The heating tube 8 is driven to heat and thaw the louver 203. When the exhaust fan body 3 is ventilating, the louver 203 opens.
Claims
1. An improved dustproof and rainproof exhaust fan, comprising a fixed frame (1), characterized in that: The fixed frame (1) is provided with a protective component (2), which includes an electric telescopic rod (201). The telescopic end of the electric telescopic rod (201) is fixedly connected to a push rod (204). The outer wall of the push rod (204) is fixedly connected to multiple sets of first rotating seats (205). A moving plate (206) is rotatably connected to the first rotating seat (205). The other end of the moving plate (206) is rotatably connected to a second rotating seat (207). The outer wall of the second rotating seat (207) is fixedly connected to a louver (203). A rotating rod (202) is fixedly connected inside the louver (203).
2. An improved dustproof and rainproof exhaust fan according to claim 1, characterized in that, The rotating rod (202) passes through the louver (203), and both ends of the rotating rod (202) are rotatably connected to the fixed frame (1).
3. An improved dustproof and rainproof exhaust fan according to claim 1, characterized in that, A heating tube (8) is fixedly connected inside the fixed frame (1), and an exhaust fan body (3) is fixedly connected on the fixed frame (1).
4. An improved dustproof and rainproof exhaust fan according to claim 3, characterized in that, A fixing rod (4) is fixedly connected to the inner wall of the exhaust fan body (3). A motor (5) is fixedly connected to the lower end of the fixing rod (4). A transmission rod (6) is fixedly connected to the output end of the motor (5). An exhaust fan blade (7) is fixedly connected to the outside of the transmission rod (6).
5. An improved dustproof and rainproof exhaust fan according to claim 3, characterized in that, The number of heating tubes (8) is multiple sets, and the left and right ends of the multiple sets of heating tubes (8) are fixedly connected to the fixed frame (1).
6. An improved dustproof and rainproof exhaust fan according to claim 1, characterized in that, The number of louvers (203) is multiple.
7. An improved dustproof and rainproof exhaust fan according to claim 1, characterized in that, The fixed frame (1) has an exhaust vent inside.