Automatically controlled washing machine

Details Automatically controlled washing machine Automatically controlled washing machine

1996-04-08

1997-07-15

Coe, Philip R.

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

68 1212, D06F 3302

Patent

active

056472323

ABSTRACT:
An automatically controlled washing machine includes a laundry drum and a drive motor which drives the laundry drum at a plurality of different speeds for washing, rinsing and spinning. The speed of the drive motor is adjustable with an rpm control circuit and is determinable in accordance with set-point and actual rpm values. A control circuit of the washing machine can receive a signal during a spin cycle, which is a measure for an undesired braking of the drum (for instance from suds production) and is determined by a mutual ratio of the following operating parameters of the drive motor: the set-point rpm, the actual rpm, and a load-dependent electrical variable, such as a motor current.

REFERENCES:
patent: 4410329 (1983-10-01), Blevins et al.

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