| 摘要 |
<p>A motorized damper for a forced air home heating system, wherein a damper plate is mounted in a housing for 360 degree continuous rotation in one direction, to successively open and close the damper. An electric motor rotates the damper and is connected through a first two-way switch actuated by the damper plate to a wall mounted second two-way switch and thence to a power source. When an occupier enters the room and operates the wall two-way switch, the motor rotates the damper plate from closed to open position, at which time the damper plate actuates the first two-way switch to de-energize the motor. When the occupier leaves the room, he again operates the wall switch to turn on the motor and rotate the damper plate to its closed position, whereupon the damper plate actuates the first two-way switch again to shut off the motor. A number of dampers can be centrally controlled by a central processor and an override switch may be used so that when an occupant enters a room, all of the home dampers except that in such room will close for a short time to direct the entire furnace output to that room to rapidly heat the room.</p> |
