Damper blade control

Details Damper blade control Damper blade control

1979-08-30

1981-03-31

Tapolcai, Jr., William E.

Automatic temperature and humidity regulation

Ventilator type

248300, 318467, F24F 706

Patent

active

042588774

ABSTRACT:
A damper blade control for regularing the flow of conditioned air through a supply air duct and into a zone. The control comprises an electric motor for use with a source of electrical energy for moving the damper blade between a minimum air flow position and a maximum air flow position, and a thermostatic switch electrically positioned between the motor and the source of electrical energy for connecting the motor thereto to change the position of the damper blade in response to changes in the temperature of the zone. The control further comprises maximum and minimum flow switches disposed outside the supply air duct for disconnecting the motor from the source of electrical energy when the damper blade reaches, respectively, the maximum and minimum air flow positions. An indicator lever is located outside the supply air duct and supported thereby for movement in response to movement of the damper blade for indicating the position thereof, and the indicator lever actuates the maximum and minimum flow switches to disconnect the motor from the source of electrical energy when the damper blade reaches, respectively, the maximum and minimum air flow positions. Adjustable securing brackets are provided to adjustably secure the maximum and minimum flow switches to the supply air duct, the position of the maximum and minimum flow switches being adjustable to vary the maximum and minimum air flow positions of the damper blade.

REFERENCES:
patent: 1700120 (1929-01-01), Campbell
patent: 2499544 (1950-03-01), Vancil
patent: 3412232 (1968-11-01), Sanders
patent: 3818302 (1974-06-01), Rutledge
patent: 3914676 (1975-10-01), Madonian et al.
patent: 4147298 (1979-04-01), Leemhuis
Operating and Maintenance Instructions 35 B, "Modubox Variable Air Volume Systems", Form 35B-1S0, 1978, Carrier Corp.
Carrier Corp.--Installation and Startup Instructions, 35 B, "System Powered Unit and Remote Diffuser Boxes", Form 35B-551, 1978.
Trane Co.--"Varitrane Controls", Form D VAV-1 776, 1977.

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