Automatic stack damper

Details Automatic stack damper Automatic stack damper

1975-08-19

1977-08-02

Wayner, William E.

Automatic temperature and humidity regulation

Miscellaneous

Burner controls with automatic cutoff

126285B, F23N 300, F23J 1100

Patent

active

040391230

ABSTRACT:
An improvement in a system comprising a heat stack, a damper having a vane in said heat stack, actuating means for opening and closing said damper, the actuating means being electrically connected to and responsive to a thermostat in an electrical circuit containing the heating means for generating heat, the by-products from which pass through the heat stack, the improvement residing in that the actuating means comprises an electric motor which is spring biasedly connected to the vane, the electric motor being in a normally "On" position having current passing therethrough and holding said vane against the action of said spring in a closed position. Means are provided to deactivate the motor and allow the spring to return the vane so that the stack is in an open position.

REFERENCES:
patent: 2037363 (1936-04-01), Branche
patent: 3580238 (1968-06-01), Diehl

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