Foam sensor of drum washing machine

Details Foam sensor of drum washing machine Foam sensor of drum washing machine

2006-06-06

2010-11-16

Perrin, Joseph L (Department: 1711)

Textiles: fluid treating apparatus

Machines

Single tub and automatic sequential operation mechanism

C068S012270

Reexamination Certificate

active

07832236

ABSTRACT:
A foam sensor of a drum washing machine is constructed such that a pair of temperature electrode terminals and a foam electrode terminal are supplied with electricity by a single connector, and thus is able to sense an electrical connection by a signal change of the temperature electrode terminals, in a case where electrical connection of the foam electrode terminal is cut off, thereby preventing a false sensing of foam generation caused by electrical short-circuiting of the foam electrode terminal. Furthermore, the foam electrode terminal is provided integral with the connector, and the temperature sensor portion has a thermistor for sensing a temperature of washing water and temperature electrode terminals inserted into the connector, the thermistor and the temperature electrode terminals being connected by a cord, which makes installation easier.

REFERENCES:
patent: 5038586 (1991-08-01), Nukaga et al.
patent: 5768730 (1998-06-01), Matsumoto et al.
patent: 2005/0081308 (2005-04-01), Kim et al.
patent: 2005/0081572 (2005-04-01), Park et al.
patent: 2399432 (2000-10-01), None
patent: 1609327 (2005-04-01), None
patent: 2003-260290 (2003-09-01), None

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