Air conditioning system and control therefor

Automatic temperature and humidity regulation – Ventilator type

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Details

62186, F24F 1104

Patent

active

042981646

ABSTRACT:
A control for an air conditioning system of the type wherein a supply of air is conditioned at a central station, conditioned air is conducted through a supply air duct to a plurality of zones, and a plurality of discharge terminals discharge conditioned air from the supply air duct into the zones. The control comprises a plurality of air control valves, wherein each discharge terminal includes an air control valve for controlling the amount of conditioned air discharged into a zone by the discharge terminal; and a plurality of thermostatic adjusting devices, wherein each discharge terminal includes a thermostatic adjusting device for adjusting the air control valve to inversely vary the amount of air discharged into the zone in response to changes in the air temperature thereof. The control further comprises a primary override switch, wherein a first selected discharge terminal includes the primary override switch for overriding the thermostatic adjusting device of the first selected discharge terminal to increase the amount of air discharged into a first selected zone during a warm-up period when the temperature of the air passing through the supply air duct exceeds a predetermined value; and an auxiliary override switch, wherein a second selected discharge terminal includes the auxiliary override switch for overriding the thermostatic adjusting device of the second selected discharge terminal to substantially restrict the discharge of air into a second selected zone during the warm-up period to prevent overheating thereof.

REFERENCES:
patent: 3720258 (1973-03-01), Chandler
patent: 3753184 (1973-08-01), Holloway et al.
patent: 3824800 (1974-07-01), Church
patent: 3915376 (1975-10-01), Attridge et al.
patent: 3934797 (1976-01-01), Perlmutter
patent: 4120453 (1978-10-01), Herb et al.

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