Liquid purification or separation – Structural installation – Closed circulating system
Patent
1979-05-17
1982-11-02
Sadowski, David R.
Liquid purification or separation
Structural installation
Closed circulating system
210171, 2101952, 210206, 2102572, 2104332, 123 4155, 422264, 422265, 222 54, B01D 3100
Patent
active
043572367
ABSTRACT:
A device for the automatic addition of a corrosion inhibitor to a cooling system, such as in an automobile engine, utilizing osmotic pressure. The device includes a container for a concentrated corrosion inhibitor solution with a semi-permeable osmotic membrane in contact with and separating the inhibitor solution from the coolant in the overflow reservoir. With properly inhibited coolant, the osmotic pressures balance, but if the level of inhibitor in the coolant drops, water passes through the membrane to force inhibitor solution through an overflow tube or opening to mix with the coolant and raise the inhibitor level therein to a predetermined value.
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patent: 3468796 (1969-09-01), Noll et al.
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patent: 3749646 (1973-07-01), Pirt
patent: 3772193 (1973-11-01), Nelli et al.
patent: 3853478 (1974-12-01), Rodgers
patent: 3979295 (1976-09-01), Markley
patent: 4077407 (1978-03-01), Theeunes et al.
Levenspiel, O. et al., "The Osmotic Pump", Science 1/18/74, vol. 183, No. 4121, pp. 157-160.
Borg-Warner Corporation
Geppert James A.
Sadowski David R.
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