Cleaning method and system using a solvent.

摘要

A cleaning tank (1) is closed after an article (2) to be cleaned is placed within the cleaning tank. An organic solvent, such as Freon, is supplied to the cleaning tank (1) from a solvent storage tank (3). The article is cleaned with the supplied solvent. After the cleaning, the solvent is discharged in liquid state from the cleaning tank (1) while vapor of the solvent which remains in the cleaning tank is discharged to a condenser (16) to condense the vapor. The condensed solvent is returned from the condenser (16) into the solvent storage tank (3). After the liquid solvent and vapor solvent have been discharged from the cleaning tank (1), the cleaned article is taken out of the cleaning tank. The condenser (16) is incorporated in a distiller (14). A solvent vapor supplying unit (34) is connected to the cleaning tank (1). The thus provided closed system prevents release of the organic solvent to the atmosphere.