High-temperature-resistant smoke exhaust fire damper
By incorporating a sealing frame and sealing strip within the fire damper, the problem of poor sealing caused by blade gaps is solved, achieving a highly efficient smoke barrier effect, improved sealing performance, and high temperature resistance.
Patent Information
- Application Number
- CN202423171920.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-19
AI Technical Summary
The existing fire damper blades have gaps at the edges, resulting in poor sealing performance, smoke leakage, and reduced smoke isolation effect.
A sealing frame is installed on the inner wall of the mounting frame of the fire damper. The sealing frame has a V-shaped groove and sealing strips on both sides of the blade. These are used together to improve the sealing performance. The opening and closing of the blade is controlled by a temperature sensor and a motor.
It effectively prevents flue gas from passing through the blade gaps, improves sealing performance, ensures that flue gas does not leak out, the sealing frame design does not affect blade rotation, and the sealing strip is made of excellent material that is resistant to high temperature and flame retardant.
Smart Images
Figure CN223595115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire damper technology, specifically a high-temperature resistant smoke exhaust fire damper. Background Technology
[0002] A smoke exhaust fire damper is a fire protection component that is typically installed on the duct of a mechanical smoke exhaust system. It opens to exhaust smoke in the event of a fire and closes when the temperature of the smoke in the exhaust duct reaches 280 degrees Celsius, thus preventing the spread of fire by blocking smoke and flame.
[0003] Existing fire dampers typically open and close by rotating blades. The blades are usually made of high-temperature resistant metal. When the blades are closed, there are gaps at the edges, resulting in poor sealing performance. This allows some smoke to flow outwards, reducing the smoke barrier effect. Utility Model Content
[0004] To address the shortcomings of existing technologies, the technical problem solved by this utility model is to provide a high-temperature resistant smoke exhaust fire damper, thereby resolving the issue of poor sealing due to gaps at the edges of existing fire damper blades.
[0005] To solve the above problems, the technical solution adopted by this utility model is: a high-temperature resistant smoke exhaust fire damper, including a mounting frame, a rotating shaft, blades, and a sealing frame. The rotating shaft is rotatably installed in the mounting frame, and the blades are fixedly connected to the rotating shaft. The sealing frame is installed on the inner wall of the mounting frame. A V-shaped groove is provided on the sealing frame near the blade, and sealing strips corresponding to the V-shaped grooves are provided on both sides of the blade. The sealing frame and sealing strips work together to improve the sealing performance of the blade and effectively block smoke. The mounting frame is also provided with a control device for controlling the opening and closing of the blade.
[0006] The beneficial effects of this solution are as follows: Compared with the existing technology, this utility model sets a sealing frame on the inner wall of the installation frame of the fire damper. The sealing frame is provided with a V-shaped groove, and sealing strips corresponding to the V-shaped grooves are set on both sides of the blade. When the blade is closed, the sealing frame and sealing strips cooperate to improve the sealing performance of the blade and effectively prevent the smoke from flowing out due to gaps at the edge of the blade. Moreover, the sealing frame is set on both sides of the blade and will not affect the rotation of the blade.
[0007] Furthermore, the control device includes a temperature sensor, a motor, and a controller. The temperature sensor and the motor are connected to the controller. The temperature sensor is used to detect the temperature of the fireworks, and the motor is connected to a rotating shaft, which drives the rotating shaft to rotate and thus drives the blades to rotate, thereby opening and closing the blades.
[0008] Furthermore, there are two sealing frames, which are symmetrically installed on the inner wall of the mounting frame along the axis of rotation, located on both sides of the blade, and seal with the blade without affecting the blade rotation.
[0009] Furthermore, the bottom angle of the V-groove is 60°, and the cross-section of the sealing strip is U-shaped. When the blade is closed, the sealing strip on the blade enters the V-groove on the sealing frame. The U-shaped sealing strip and the two inclined surfaces of the V-groove cooperate to form a sealing environment, which improves the sealing performance of the blade and effectively prevents flue gas from passing through the blade.
[0010] Furthermore, the sealing strip is made of nitrile rubber, which has excellent sealing and high-temperature flame-retardant properties, and can effectively block high-temperature smoke. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0012] Figure 2 This is a schematic diagram of the blades of this utility model when they are open;
[0013] Figure 3 This is a schematic diagram of the sealing frame structure of this utility model;
[0014] Figure 4 This is a schematic diagram of the blade structure of this utility model;
[0015] Figure 5 This is a schematic diagram of the cooperation between the sealing frame and the sealing strip of this utility model;
[0016] In the diagram: 1-mounting frame, 2-rotating shaft, 3-blade, 4-sealing frame, 5-sealing strip, 6-temperature sensor, 7-motor, 8-controller, 41-V-groove. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Implementation, for example, attached Figures 1 to 5 As shown: A high-temperature resistant smoke exhaust fire damper includes a mounting frame 1, a rotating shaft 2, blades 3, and a sealing frame 4. The rotating shaft 2 is rotatably mounted inside the mounting frame 1. The blades 3 are fixedly connected to the rotating shaft 2. The sealing frame 4 is mounted on the inner wall of the mounting frame 1. A V-shaped groove 41 is provided on the sealing frame 4 near the blades 3. Sealing strips 5 corresponding to the V-shaped groove 41 are provided on both sides of the blades 3. The sealing frame 4 and the sealing strips 5 work together to improve the sealing performance of the blades 3 and effectively block smoke. The mounting frame 1 is also equipped with a control device for controlling the opening and closing of the blades 3.
[0019] The control device includes a temperature sensor 6, a motor 7, and a controller 8. The temperature sensor 6 and motor 7 are connected to the controller 8. The temperature sensor 6 is used to detect the temperature of the pyrotechnics. The motor 7 is connected to the rotating shaft 2, which drives the rotating shaft 2 to rotate, thereby driving the blade 3 to rotate and realize the opening and closing of the blade 3. There are two sealing frames 4, which are symmetrically installed on the inner wall of the mounting frame 1 along the axis of the rotating shaft 2, respectively located on both sides of the blade 3. They cooperate with the blade 3 to seal while not affecting the rotation of the blade 3. The bottom angle of the V-groove 41 is 60°. The sealing strip 5 has a U-shaped cross-section. When the blade 3 is closed, the sealing strip 5 on the blade 3 enters the V-groove 41 on the sealing frame 4. The U-shaped sealing strip 5 and the two inclined surfaces of the V-groove 41 cooperate to form a sealing environment, improve the sealing performance of the blade 3, and effectively prevent smoke from passing through the blade 3. The sealing strip 5 is made of nitrile rubber, which has excellent sealing and high-temperature flame retardant properties and can effectively block high-temperature smoke.
[0020] The specific implementation process is as follows: The high-temperature resistant smoke exhaust fire damper of this utility model has a sealing frame 4 on the inner wall of the mounting frame 1. A V-shaped groove 41 is provided on the sealing frame 4 near the blade 3. A sealing strip 5 corresponding to the V-shaped groove 41 is provided on the blade 3. The blade 3 is controlled to open and close by a control device. When the blade 3 is closed, the sealing strip 5 enters the V-shaped groove 41 and cooperates with the inclined surfaces on both sides of the V-shaped groove 41 to form a sealed environment, effectively blocking the smoke and preventing the smoke from flowing out due to gaps at the edge of the blade 3.
[0021] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A high-temperature resistant smoke exhaust fire damper, characterized in that: The device includes a mounting frame, a rotating shaft, blades, and a sealing frame. The rotating shaft is rotatably mounted inside the mounting frame, and the blades are fixedly connected to the rotating shaft. The sealing frame is mounted on the inner wall of the mounting frame. A V-shaped groove is provided on the sealing frame near the blade, and sealing strips corresponding to the V-shaped groove are provided on both sides of the blade. The mounting frame is also equipped with a control device for controlling the opening and closing of the blades.
2. The high-temperature resistant smoke exhaust fire damper according to claim 1, characterized in that: The control device includes a temperature sensor, a motor, and a controller. The temperature sensor and the motor are connected to the controller. The temperature sensor is used to detect the temperature of the fireworks, and the motor is connected to the rotating shaft.
3. The high-temperature resistant smoke exhaust fire damper according to claim 1, characterized in that: There are two sealing frames, which are symmetrically installed on the inner wall of the mounting frame along the axis of rotation, respectively located on both sides of the blade.
4. The high-temperature resistant smoke exhaust fire damper according to claim 1, characterized in that: The bottom angle of the V-groove is 60°, and the cross-section of the sealing strip is U-shaped.
5. The high-temperature resistant smoke exhaust fire damper according to claim 1, characterized in that: The sealing strip is made of nitrile rubber.