Cleaning and liquid contact with solids – Apparatus – Automatic controls
Patent
1995-06-21
1997-08-26
Stinson, Frankie L.
Cleaning and liquid contact with solids
Apparatus
Automatic controls
134 51D, 134 58D, 134105, 134108, B08B 310
Patent
active
056601930
ABSTRACT:
The invention relates to a waste water heat recovering unit for preheating cold fresh water with already heated water, comprising a cleaning liquid tank (9) for collecting warm cleaning liquid, an intermediate tank (10) which is connected via a pipe (101) with the cleaning liquid tank (9), a pump (8) arranged in the pipe (101) which conveys at least part of the warm cleaning liquid from the cleaning liquid tank (9) into the intermediate tank (10), and a heat exchanger (4) which is connected, on the one hand, via a fresh water pipe (14) equipped with a volume controlling valve (1) to a fresh water connection for cold water and, on the other hand, to the intermediate tank (10) containing the warm cleaning liquid, a drain valve (12) being provided at the outlet of the heat exchanger (4) in the cleaning liquid guidance so that there flows through the heat exchanger (4) either substantially the same volume of cold fresh water as warm cleaning liquid from the intermediate tank (10), or only warm cleaning liquid with additional clear rinsing solution. In a second embodiment of a waste water heat recovering unit, instead of the drain valve (12), there is provided an intermittent pump (30) between the intermediate tank (10) and the heat exchanger (4) so that again there flows through the heat exchanger (4) substantially the same volume of cold fresh water as warm cleaning liquid from the intermediate tank (10), or only warm cleaning liquid with additional clear rinsing solution.
REFERENCES:
patent: 4512811 (1985-04-01), Binnig et al.
patent: 4641671 (1987-02-01), Nogi et al.
patent: 4732171 (1988-03-01), Milocco
patent: 4783223 (1988-11-01), Jenderichowski et al.
patent: 5017852 (1991-05-01), Nagata et al.
Archer John
Worter Markus
Premark FEG L.L.C.
Stinson Frankie L.
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