Drying and gas or vapor contact with solids – Apparatus – With automatic control
Patent
1997-07-22
1998-12-29
Bennett, Henry A.
Drying and gas or vapor contact with solids
Apparatus
With automatic control
34547, 34562, 34572, F26B 1310
Patent
active
058528814
ABSTRACT:
The inventive clothes dryer is provided with a system for preventing the overheating of the clothes in the drum caused by the abnormality in the V-belt, such as the break or derailment thereof. By the system, the power supply to the motor is halted temporarily while the motor is rotated at a predetermined speed, whereafter the motor keeps rotating due to its inertia. During the inertial rotation of a predetermined period of time, the number of rotations of the motor is counted. When the V-belt is in the normal state, the motor is loaded appropriately, so that the speed of the motor falls rapidly during the inertial rotation, and the number of rotations is accordingly small. When, on the other hand, the V-belt is in an abnormal state, the number of rotations is large. Therefore, the state of the V-belt is checked by comparing the number of rotations to a predetermined value, and when the number is smaller than the predetermined value, the drying operation is stopped.
REFERENCES:
patent: 4857813 (1989-08-01), Matsumoto et al.
patent: 5006778 (1991-04-01), Bashark
patent: 5454171 (1995-10-01), Ikeda et al.
Fujikawa Kiyokazu
Fukuda Takashi
Hirose Hisanori
Hirota Tatsuya
Kawamura Tamotu
Bennett Henry A.
Gravini Steve
Sanyo Electric Co,. Ltd.
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