Patent ID: 6609310
Filing Date: 2003-08-26
Classification: D06F

Abstract:
In a dry cleaning machine provided with a washing and drying drum, drying air intake and discharge ducts connected, respectively to an inlet and to an outlet of the drum, a dosed drying circuit, a solvent condenser, at least one heat exchanger for increasing air temperature before returning thereof to the drum, a drying safety control apparatus comprising:at least one temperature detector located at the discharge duct for monitoring temperature of to air-solvent mixture at the outlet of the drum; at least one control valve driven by said at least one temperature detector; an additional separator-heat exchanger with high thermal capacity for cooling the air solvent-mixture, separating solvent from said mixture and returning to the drum solvent-free cooled air; and wherein said additional separator-heat exchanger comprises an ak-solvent mixture inlet and a cooled air outlet connected, respectively, through first and a second pipe portions controlled by said at least one control valve, to the drying circuit, said at least one valve being driven by said at least one temperature detector to enable, above a preset temperature of the air-solvent mixture, conveyance of at least part of the air-solvent mixture from the drying circuit into said additional separator-heat exchanger, separation of solvent from the air-solvent mixture, cooling of the air and conveyance of cooled air, Through said outlet of the separator-heat exchanger back into to drum for lowering temperature of the air-solvent mixture under said preset temperature.