Electronic control of clothes dryer

Details Electronic control of clothes dryer Electronic control of clothes dryer

1990-04-26

1994-03-08

Bennet, Henry A.

Drying and gas or vapor contact with solids

Apparatus

With means to treat gas or vapor

34 48, 34 46, 34 89, F26B 1310

Patent

active

052916677

ABSTRACT:
A control system for a clothes dryer is disclosed. A microprocessor monitors the heated inlet air temperature and the exhaust temperature. If the inlet temperature exceeds a high limit value a given number of times, an air blockage indicator is activated. Degrees of dryness are measured by the number of times the inlet temperature has dropped below a threshold value while the heater is off because the exhaust temperature has exceeded a desired value. An estimated drying time is calculated and displayed to the user based on a linear function of the inlet and exhaust temperatures measured at the beginning of the cycle and again a short time later.

REFERENCES:
patent: 4206552 (1980-06-01), Pomerantz
patent: 4372054 (1983-02-01), Pomerantz et al.
patent: 4485566 (1984-12-01), Vivares
patent: 4622759 (1986-11-01), Abe et al.
patent: 4788775 (1988-12-01), Ahmed
patent: 4827627 (1989-05-01), Cardoso

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