Product for the cleaning of refrigeration installations, method and device for purging of the same
AssigneeDehon SAS
InventorsSerge Francois, Francoise Brisset
Life of this patent
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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.
Claims18
Cleaning fluid for internal surfaces of a component of a refrigeration plant, characterized in that the cleaning fluid comprises a cleaning oil mixed with a liquefied carrier gas to form, by expansion, a cleaning foam that when introduced into the component is free of water and then entrains any water contained in the component.
Method of cleaning a component of a refrigeration plant using a cleaning oil, characterized in that the method comprises the following steps:
- the step of creating a foam from the cleaning oil and a liquefied gas in which it is a least partly miscible;
- the step of making the foam circulate in the said component;
- and the step of extracting the foam from the component.
Dependencies are inferred from the claim text.