| 摘要 |
FIELD: fire prevention facilities.SUBSTANCE: driving device (1) for the fire damper (2) comprises an electric drive (10) holding the fire damper when current flows in the normal position, and when deenergising it is brought into the defensive position. Along with the thermal interrupter switch (2) interrupting the power supply to the drive (10) at the melting point, the driving device (1) also comprises a temperature sensor (13) for measuring the value (T) of the air temperature, a gas sensor (14) for measuring the content (G) of gases in the air, generated during the fire, and a switching unit (5) interrupting the current supply depending on the value (T) of the air temperature and the content (G) of gases in the air, generated during the fire.EFFECT: in case of fire the fire damper can be brought into the defensive position not only at high temperature in the area of the thermal interrupter switch (2), but even when smoke or gas formation caused by fire.3 cl, 5 dwg |
