Temperature control for variable volume air conditioning system

Details Temperature control for variable volume air conditioning system Temperature control for variable volume air conditioning system

1979-03-22

1981-01-13

Wayner, William E.

Automatic temperature and humidity regulation

Ventilator type

236 78D, 251131, 318644, F16K 3102, F24F 700

Patent

active

042445175

ABSTRACT:
A temperature control is disclosed for a variable volume air conditioning system of the type wherein electric motor-operated air valve means are provided for varying the volume of relatively warm or relatively cool conditioned air supplied to a conditioned zone. The control includes zone thermostat means for sensing the temperature within a conditioned zone, determining the deviation between a set-point temperature and the zone temperature, and for producing an electrical error signal having a magnitude which varies in a predetermined relationship with respect to said deviation in temperature. Valve motor control circuit means receive the error signal and are operative to energize electric motor-operated air valve means in response thereto so as to vary the volume of conditioned air being supplied to said conditioned zone in a sense to restore the zone temperature to the set-point temperature. Flow limit circuit means receives the error signal and imposes limits thereon related to the minimum or maximum desired flow of conditioned air.

REFERENCES:
patent: 2832018 (1958-04-01), Laub
patent: 3719321 (1973-03-01), McNabney
patent: 3841394 (1974-10-01), Van Beclaere
patent: 4078721 (1978-03-01), Okuhara

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