Control system for drier

Details Control system for drier Control system for drier

1976-09-27

1978-09-12

Camby, John J.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34133, 219497, F26B 1900

Patent

active

041125894

ABSTRACT:
An air drier comprises a chamber in which articles are placed for drying, a blower for causing air to pass through the chamber, a heater for heating the air entering the chamber and a control circuit which includes sensors for detecting the ambient air temperature and that of air leaving the chamber. The control circuit is adapted to control the power supplied to the heater in dependence on the detected temperature difference. The control circuit has an economy switch which when operated causes the circuit to maintain the exhaust air temperature at a temperature only slightly above ambient, and a detector which monitors the power supplied to the heaters and interrupts the drying cycle when the power drops below a predetermined value.

REFERENCES:
patent: 3302299 (1967-02-01), Scherzinger
patent: 3401464 (1968-09-01), Fogt et al.
patent: 3526968 (1970-09-01), Triplett
patent: 3648077 (1972-03-01), Evalds
patent: 3649853 (1972-03-01), Kerchner
patent: 3700933 (1972-10-01), Harkenrider et al.
patent: 3801832 (1974-04-01), Joyce

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