Control method and system for clothes dryer

Details Control method and system for clothes dryer Control method and system for clothes dryer

2006-02-14

2006-02-14

Rinehart, Kenneth (Department: 3749)

Drying and gas or vapor contact with solids

Process

Gas or vapor contact with treated material

C034S529000, C034S572000, C034S601000

Reexamination Certificate

active

06996920

ABSTRACT:
A control method and system for a belt-driven clothes dryer are disclosed. The control system includes a drum containing a load of wet clothes to be dried, a heater heating air flowing into the drum, a motor coupled to the drum by a power transmission system for rotating the drum, and a power supply supplying power to the motor and the heater during a dry operation of the dryer. The control system further includes a moisture sensor outputting a sensor signal during the dry operation, or a photo coupler outputting voltage pulses when the motor is in operation during the dry operation. Then, a microprocessor included in the control system detects a breakage of the power transmission system upon analyzing the sensor signal of the moisture sensor or the voltage pulses generated by the photo coupler. If the microprocessor detects such breakage, it interrupts the dry operation of the clothes dryer.

REFERENCES:
patent: 3890719 (1975-06-01), Braga et al.
patent: 4488363 (1984-12-01), Jackson et al.
patent: 5852881 (1998-12-01), Kuroda et al.
patent: 6637127 (2003-10-01), Reede et al.

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