Process for eliminating foam in the lye container of a drum...

Details Process for eliminating foam in the lye container of a drum... Process for eliminating foam in the lye container of a drum...

2005-01-28

2008-03-11

Barr, Michael (Department: 1792)

Bleaching and dyeing; fluid treatment and chemical modification

Fluid treatment

Manipulation of liquid

C008S127000, C008S159000, C068S0030SS, C068S01700R, C068S012120, C068S012210, C068S137000, C068S207000, C068S213000

Reexamination Certificate

active

07340792

ABSTRACT:
A sensor for determining the level of the liquid in the lye container for removing foam in the lye container of a drum washing machine with a lye discharge system arranged on the floor of the lye container with a lye pump during a program step, which is provided for dehydrating the lye container. Its sensor signal P is recorded during operation of the lye pump. According to the present invention the sequence p/t of the sensor signal contains a component Δp/Δt, whereof the presence indicates the presence of foam in the measuring region. Further, in the presence of the component a foam treatment measure suiting the type of component is introduced.

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International Search Report for PCT/EP2003/006861.

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