Patent ID: 7823423

Claim:
A dry cleaning apparatus, performed by supplying a solvent for dry cleaning into a process tank for cleaning objects, collecting the solvent from the process tank as a collected solvent, and after removing dirt component in the collected solvent by a distilling device and a condensing device, recycling substantially whole volume of the collected solvent as the solvent to be supplied to the process tank, comprising: a supply tank storing the solvent to be supplied to the process tank; a solvent supplying device for supplying the solvent continuously from the supply tank to the process tank; a solvent collecting device for collecting the solvent continuously from the process tank; a rotation driver for rotating the process tank; a supply-side contamination sensor for detecting contamination level of the solvent supplied continuously from the supply tank to the process tank; a collect-side contamination sensor for detecting contamination level of the collected solvent being collected continuously from the process tank and supplied to the distilling device; and a controller for controlling the rotation driver, the solvent supplying device and the solvent collecting device, whereby the controller stops rotation of the process tank by the rotation driver, supply of the solvent from the supply tank to the process tank by the solvent supplying device, and collection of the solvent from the process tank to the distilling device by the solvent collecting device when the contamination level detected by the collect-side contamination sensor is decreased until a difference of the detected contamination levels reaches to a predetermined value while the process tank is rotated by the rotation driver.