Product for the cleaning of refrigeration installations,...

Details Product for the cleaning of refrigeration installations,... Product for the cleaning of refrigeration installations,...

2005-04-12

2005-04-12

Doerrler, William C. (Department: 3744)

Refrigeration

Refrigeration producer

With refrigerant treater

C134S022110, C134S022120, C134S16900A, C134S16600C

Reexamination Certificate

active

06877337

ABSTRACT:
The invention relates to a cleaning fluid for a refrigeration plant, characterized in that it comprises a cleaning oil mixed with a liquefied carrier gas with which it forms, by expansion, a cleaning foam, for example the oil is a POE or a PAG and the gas is R134a.The invention also relates to a cleaning method. This comprises the following steps: the step of creating a foam from the oil and a liquefied gas in which it is at least partly miscible; the step of making the foam circulate in the said component; and the step of extracting the foam. In particular, the plant is rinsed with the gas separated from the cleaning foam, in order to remove the oil residues.

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patent: 4623399 (1986-11-01), Frenier
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patent: 5415003 (1995-05-01), Bertva et al.
patent: 5507969 (1996-04-01), Shinohara et al.
patent: 5761912 (1998-06-01), Popp et al.

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