Dishwasher

Details Dishwasher Dishwasher

1996-09-06

1999-09-07

Stinson, Frankie L.

Cleaning and liquid contact with solids

Apparatus

With plural means for supplying or applying different fluids...

1341031, 134201, 68 13A, 68902, B08B 302

Patent

active

059471352

ABSTRACT:
When tableware is washed and rinsed in a dishwasher using a plurality of washing steps, the tableware is washed within 10 minutes using acid ionized water having a pH value of at most 6.0 and a temperature of at least 40.degree. C. in a first washing step, whereby dirt is made to form cohesion and is prevented from being reattached to the tableware, so that a washing load in the following washing steps is reduced. Furthermore, the tableware is washed for at least 15 minutes with alkaline ionized water having a pH value of at least 8.5 and a temperature of at least 55.degree. C. in at least one of the washing steps, whereby the washing effects on fats and oils, protein and starch are improved. In addition, while the two kinds of ionized water mentioned above are being produced simultaneously, one ionized water produced is supplied to a washing vessel for use in the present washing and the other ionized water produced is supplied to and stored in a water tank for use in the next washing, so that provision of two or more water tanks is not necessary, resulting in reduction in size of dishwashers and in manufacturing cost thereof. Moreover, two kinds of ionized water produced simultaneously are used as washing water without being discarded before use, so that water saving can be achieved.

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