A fireproof air gate
By introducing a damper actuator and control system into the fireproof damper, and combining remote and local buttons and indicator lights, the problem of inaccurate damper status feedback is solved, and reliable monitoring and safe control of the damper status are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU JOSUN AIR CONDITIONER
- Filing Date
- 2025-05-26
- Publication Date
- 2026-07-31
AI Technical Summary
Existing fire dampers cannot effectively report their open/closed status when the actuator malfunctions, resulting in untimely and ineffective control of ventilation demand and posing a safety hazard.
The control system consists of a damper actuator, remote and local control buttons, I/O modules, a controller power supply, remote and local control boxes, and indicator lights. It uses a potentiometer or Hall sensor to detect the damper angle, enabling remote and local monitoring of the damper status and ensuring the accuracy of signal feedback.
It enables effective monitoring of the opening and closing status of the damper, improves safety performance, ensures accurate status display even when the power is off, and enhances the reliability and safety of control.
Smart Images
Figure CN224579827U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a ventilation damper, specifically a fireproof ventilation damper with real-time monitoring and feedback of its opening and closing status. Background Technology
[0002] Fire dampers are mostly used in ventilation areas with high safety requirements. Their opening and closing status needs to be stable and controllable. Existing local and / or remote control of fire dampers inputs control signals to the actuator, which then operates to close or open the damper. If the actuator malfunctions, causing the damper to not open or close completely or to stop midway, the open and close status of the damper cannot be effectively fed back. As a result, the ventilation demand of the damper cannot be controlled in a timely and effective manner, posing a safety hazard. Summary of the Invention
[0003] This utility model provides a fireproof air damper with a simple structure that can effectively monitor the opening or closing status of the air damper remotely or locally, thereby improving its safety performance.
[0004] The technical solution of this utility model is: a fireproof air damper, including an air damper actuator, a remote control button, and a local control button, characterized in that: it further includes an I / O module, a controller power supply, a remote control box, and a local control box. The positive terminal of the controller power supply is connected to the power interface of the I / O module. The I / O module control interface, which is logically complementary to the power interface, is connected to the negative terminal of the controller power supply via a normally closed switch of an on / off relay, a remote control button, and a local control button in sequence. The current signal interface of the I / O module connected to the power interface is connected via a normally open switch of a remote control, a normally open switch of a local control, and a normally open switch of an intermediate relay in parallel. The intermediate relay and the on / off relay are connected in series to the negative terminal of the controller power supply. The IO module is equipped with a shutdown module and an opening module. The input interface of the shutdown module is connected to the positive terminal of the controller power supply. The signal terminal of the shutdown module is connected to the damper actuator to receive the shutdown signal. The output interface of the shutdown module is connected to the negative terminal of the controller power supply after passing through the local shutdown indicator light and the remote shutdown indicator light connected in parallel. The input interface of the opening module is connected to the positive terminal of the controller power supply. The signal terminal of the opening module is connected to the damper actuator to receive the opening signal. The output interface of the opening module is connected to the negative terminal of the controller power supply after passing through the local opening indicator light and the remote opening indicator light connected in parallel.
[0005] When the damper actuator detects that the damper gate angle is less than 5 degrees, the damper actuator sends a closing signal to the closing module signal terminal.
[0006] When the damper actuator detects that the damper gate angle is greater than 85 degrees, the damper actuator sends an opening signal to the opening module signal terminal.
[0007] The remote control button, the remote turn-off signal light switch, and the remote turn-on signal light switch are located inside the remote control box.
[0008] The local control button, the local off signal light, and the local on signal light are located in the local control box.
[0009] The controller is powered by a DC 24V power supply.
[0010] The damper actuator is equipped with a potentiometer, Hall sensor, or optical encoder to detect the angle of the damper gate.
[0011] The damper actuator sends out a data feedback angle signal from the motor shaft; or a potentiometer, Hall sensor, or optical encoder is installed on the motor shaft inside the damper actuator.
[0012] The beneficial effects of this utility model are as follows: When the remote or local switch is not activated, the damper is in a de-energized state, the on / off relay is not energized, and the normally closed switches of the on / off relay, local normally closed switch, and remote normally closed switch remain closed. At this time, the control interface short-circuit the closing module and the opening module, and the remote and local indicator lights are not lit. After pressing the remote control or local control button, the jog button is pressed simultaneously, the intermediate relay and the on / off relay are energized, the normally open switch of the intermediate relay closes and locks the intermediate relay and the normally closed switch of the on / off relay opens, the on / off relay damper actuator operates, the damper plate rotates and its angle signal is measured and fed back to the opening module and the closing module. When the angle signal is less than 5 degrees, the damper closes. When the signal terminal of the closed module receives a closing signal, it connects the positive terminal of the controller power supply and the output interface of the closed module. The local and remote closing indicator lights in the local and remote control boxes are connected to the negative terminal of the controller power supply and illuminate, indicating that the damper is in a valid closed state. Similarly, if the angle signal is greater than 85 degrees, when the signal terminal of the open module receives an opening signal, it connects the positive terminal of the controller power supply and the output interface of the open module. The local and remote opening indicator lights in the local and remote control boxes are connected to the negative terminal of the controller power supply and illuminate, indicating that the damper is in a valid open state. Its control structure is simple and can effectively monitor the opening or closing status of the damper remotely and locally, improving the safety performance. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the control principle of this utility model.
[0014] In the diagram: 1. Air damper actuator; 2. Controller power supply; 3. Remote control button; 4. Local control button; 5. On / off relay; 6. Normally closed switch of on / off relay; 7. Intermediate relay; 8. Normally open switch of intermediate relay; 9. Normally open switch of remote control; 10. Normally open switch of local control; 11. IO module; 12. Power interface; 13. Control interface; 14. Current signal interface; 15. Shutdown module; 16. Shutdown input interface; 17. Shutdown output interface; 18. Shutdown signal terminal; 19. Shutdown input interface; 20. Shutdown output interface; 21. Shutdown signal terminal; 22. Locally shut-off signal light; 23. Locally turned-on signal light; 24. Remote shut-off signal; 25. Remotely turned-on signal light; 26. Detailed Implementation
[0015] The following description, in conjunction with the accompanying drawings and embodiments, provides further details.
[0016] Figure 1 As shown: A fireproof air damper includes an air damper actuator 1, a controller power supply 2, and an I / O module 11. The positive terminal of the controller power supply 2 is connected to the power interface 12 of the I / O module 11. The control interface 13 of the I / O module 11, which is logically complementary to the power interface 12, is connected to the negative terminal of the controller power supply 2 via a normally closed switch 6 of an on / off relay, a local control button 4, and a remote control button 3. The current signal interface 14 of the I / O module 11, which is connected to the power interface 12, is connected to the negative terminal of the controller power supply 2 via a normally open remote control switch 9, a normally open local control switch 10, and a normally open intermediate relay switch 8 connected in parallel, followed by an intermediate relay 7 and an on / off relay 5. The I / O module 11 is equipped with a closing module 15 and an opening module 19. The closing input interface 16 of group 15 is connected to the positive terminal of the controller power supply 2. The closing signal terminal 18 of the closing module 15 is connected to the damper actuator 1 to receive the closing signal. The closing output interface 17 of the closing module 15 is connected to the negative terminal of the controller power supply 2 after passing through the local closing signal light 23 and the remote closing signal light 25 in parallel. The opening input interface 20 of the opening module 19 is connected to the positive terminal of the controller power supply 2. The opening signal terminal 22 of the opening module 19 is connected to the damper actuator 1 to receive the opening signal. The opening output interface 21 of the opening module 19 is connected to the negative terminal of the controller power supply 2 after passing through the local opening signal light 24 and the remote opening signal light 26 in parallel.
[0017] In this embodiment, the controller power supply is a DC24V power supply.
[0018] In this embodiment, a potentiometer, Hall sensor, or optical encoder corresponding to the detection of the damper gate angle is installed on the damper actuator. Alternatively, a potentiometer, Hall sensor, or optical encoder is installed on the drive shaft inside the damper actuator. Or, the angle signal is transmitted via the numerical control signal of the damper actuator motor. This signal detection method is existing technology.
[0019] In this embodiment, when the damper actuator detects that the damper gate angle is less than 5 degrees, it sends a closing signal to the closing module signal terminal. When the damper actuator detects that the damper gate angle is greater than 85 degrees, it sends an opening signal to the opening module signal terminal.
[0020] In this embodiment, the remote control button, the remote turn-off signal light, and the remote turn-on signal light are located in the remote control box; the local control button, the local turn-off signal light, and the local turn-on signal light are located in the local control box.
[0021] This embodiment only provides feedback on the opening and closing status of the damper. The control of the damper's shutdown and startup can be achieved by connecting the controller's power supply positive terminal to the IO module line, or by directly adding a control switch from the IO module control interface to the controller's power supply negative terminal line. This shutdown and startup technology is existing technology.
Claims
1. A fire damper comprising a damper actuator, a remote control button and a local control button, characterised in that: It also includes an IO module, a controller power supply, a remote control box, and a local control box. The positive terminal of the controller power supply is connected to the power interface of the IO module. The IO module control interface, which is logically complementary to the power interface, is connected to the negative terminal of the controller power supply via a normally closed switch of an on / off relay, a remote control button, and a local control button. The current signal interface of the IO module connected to the power interface is connected to the negative terminal of the controller power supply via a normally open switch of a remote control, a normally open switch of a local control, and a normally open switch of an intermediate relay in parallel, and then connected in series with an intermediate relay and an on / off relay. The IO module is equipped with a shutdown module and an opening module. The input interface of the shutdown module is connected to the positive terminal of the controller power supply. The signal terminal of the shutdown module is connected to the damper actuator to receive the shutdown signal. The output interface of the shutdown module is connected to the negative terminal of the controller power supply via a parallel local shutdown indicator light and a remote shutdown indicator light. The input interface of the opening module is connected to the positive terminal of the controller power supply. The signal terminal of the opening module is connected to the damper actuator to receive the opening signal. The output interface of the opening module is connected to the negative terminal of the controller power supply via a parallel local opening indicator light and a remote opening indicator light.
2. A fire damper according to claim 1, characterised in that: When the damper actuator detects that the damper gate angle is less than 5 degrees, the damper actuator sends a closing signal to the closing module signal terminal.
3. A fire damper according to claim 1, characterised in that: When the damper actuator detects that the damper gate angle is greater than 85 degrees, the damper actuator sends an opening signal to the opening module signal terminal.
4. A fire damper according to claim 1, characterised in that: The remote control button, the remote turn-off signal light switch, and the remote turn-on signal light switch are located inside the remote control box.
5. A fireproof air damper according to claim 1, characterized in that: The local control button, the local off signal light, and the local on signal light are located inside the local control box.
6. A fire damper according to claim 1, characterised in that: The controller is powered by a DC 24V power supply.
7. A fire damper according to claim 2 or 3, characterised in that: The damper actuator is equipped with a potentiometer, Hall sensor, or optical encoder to detect the angle of the damper gate.
8. A fire damper according to claim 2 or 3, characterised in that: The damper actuator sends out the angle signal feedback data of the motor shaft inside; or a potentiometer, Hall sensor or optical encoder is installed on the motor shaft inside the damper actuator.