A washing machine may include a storage tank to store carbon dioxide; a tub to wash laundry using the carbon dioxide; a distillation tub to separate carbon dioxide discharged from the tub and foreign substances contained in the carbon dioxide; a compressor to compress the carbon dioxide discharged from the tub and move the carbon dioxide to the storage tank; a rotatable drum inside the tub; a driving device to drive rotation of a rotatable shaft connected to the rotatable drum to rotate the rotatable drum; a pipe configured to pass inside of the tub to exchange heat of the compressed carbon dioxide with the tub; and a blade protruding from the rotatable shaft so that the blade is rotated by rotation of the rotatable shaft to circulate air inside the tub to spread the heat of the compressed carbon dioxide emitted from the pipe.

A laundry treating apparatus includes a casing, a tub provided in the casing (10), and a rotatable drum (20) provided in the tub. The laundry treating apparatus also includes a water supply part provided in the casing to supply water to the rotatable drum and a solvent supply part supplying dry-cleaning solvent to the rotatable drum. The laundry treating apparatus further includes a condensation device that condenses a gaseous portion of the solvent into a liquid form and supplies the solvent in the liquid form to the solvent supply part.

A laundry processing device performs a control method. The laundry processing device includes a washing tub, a distillation tank that stores liquid carbon dioxide discharged from the washing tub and gaseous carbon dioxide, a storage tank that stores liquid carbon dioxide generated by cooling gaseous carbon dioxide of the distillation tank and that stores gaseous carbon dioxide evaporated from the cooled liquid carbon dioxide, a compressor that suctions and discharges at least one of the gaseous carbon dioxide of the distillation tank or the gaseous carbon dioxide of the storage tank, a cooler that cools gaseous carbon dioxide discharged from the compressor, and a controller that monitors gas pressures inside the distillation tank and the storage tank.

A washing machine is configured to perform washing using carbon dioxide. The washing machine includes a first housing that defines an opening and an inner space, a drum disposed in the inner space of the first housing and configured to receive laundry, a barrier that is coupled to the first housing and seals the opening of the first housing, and a second housing that faces a surface of the barrier and is coupled to the first housing. The barrier defines (i) a first space between the first housing and the barrier from leaking and (ii) a second space between the second housing, where the barrier is configured to block liquid carbon dioxide injected into the first space from leaking into the second space.

Carbon dioxide-based cleaning systems include a holding tank containing a supply of liquid carbon dioxide (CO.sub.2), a rotary cleaner having an internal drum arranged therein, the rotary cleaner fluidly coupled to the holding tank to receive liquid CO.sub.2 therefrom, the rotary cleaner configured to output CO.sub.2 with contaminants after a cleaning cycle, a compressor arranged to receive gaseous CO.sub.2 and increase a pressure of the gaseous CO.sub.2, and a condenser arranged to receive the increased pressure gaseous CO.sub.2 from the compressor and convert the gaseous CO.sub.2 into liquid CO.sub.2 and direct the liquid CO.sub.2 into the holding tank.

The present disclosure relates to a laundry treating apparatus including a pressure vessel for accommodating carbon dioxide therein, a storage tank for storing carbon dioxide therein to supply carbon dioxide to the pressure vessel, a distillation tank for storing carbon dioxide discharged from the pressure vessel to remove foreign substances dissolved in carbon dioxide discharged from the pressure vessel, and a gas supply pipe for connecting the distillation tank and the pressure vessel to each other to supply gaseous carbon dioxide stored in the distillation tank to the pressure vessel.

A laundry treating apparatus includes a pressure vessel configured to receive fluid and to maintain a pressure therein to be higher than an atmospheric pressure, a separator that divides the pressure vessel into a first chamber and a second chamber, a drum rotatably disposed in the first chamber and configured to accommodate laundry therein, a driver configured to rotate the drum, and a pump configured to cause the fluid to flow between the first chamber and the second chamber.