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 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.

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.

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.

A washing machine may include: a washing tub forming a sealable internal space in which carbon dioxide is receivable and configured so that, with the carbon dioxide received in the internal space and the internal space sealed, a pressure of the carbon dioxide is maintained, a rotatable drum in the internal space and configured to accommodate laundry to be washed with the received carbon dioxide, a rotatable shaft in the internal space and connected to the drum, and a drive device including: a stator outside the washing tub, and a rotor in the internal space, coupled to the shaft, and configured so that, with the carbon dioxide received in the internal space and the internal space sealed, electromagnetic interaction between the rotor and the stator causes the rotor to rotate thereby rotating the shaft and the drum to wash the laundry accommodated in the drum with the received carbon dioxide.

A washing machine may include: a washing tub forming a sealable internal space in which carbon dioxide is receivable and configured so that, with the carbon dioxide received in the internal space and the internal space sealed, a pressure of the carbon dioxide is maintained, a rotatable drum in the internal space and configured to accommodate laundry to be washed with the received carbon dioxide, a rotatable shaft in the internal space and connected to the drum, and a drive device including: a stator outside the washing tub, and a rotor in the internal space, coupled to the shaft, and configured so that, with the carbon dioxide received in the internal space and the internal space sealed, electromagnetic interaction between the rotor and the stator causes the rotor to rotate thereby rotating the shaft and the drum to wash the laundry accommodated in the drum with the received carbon dioxide.

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.