The present invention provides a method for cleaning fabric articles which comprises the steps of: washing the fabric articles with a cleaning solvent in a rotatable drum; rotating the drum at a high spin speed for a high spin period of time after the performance of said washing step; and heating the fabric articles for at least a period of time during the performance of said rotating step. During the heating step, at least some of the cleaning solvent is removed from the fabric articles in both liquid and vapor phases. Heating the fabric articles decreases attractive forces between the liquid phase cleaning solvent and the fabric articles, facilitating the separation and hence removal of additional quantities of the cleaning solvent from the fabric articles.

Provided is a compression system including a compressor configured to compress and discharge a refrigerant and comprising a refrigerant inflow port through which the refrigerant flows in and an oil recovery port for recovering oil, a plurality of oil separator configured to separate the oil which is included in the refrigerant discharged from the compressor and comprising a first oil separator into which the refrigerant discharged from the compressor flows and a second oil separator connected to the first oil separator in series along a travelling path of the refrigerant, a first recovery pipe configured to recover the oil from the first oil separator to the oil recovery port, and a second recovery pipe configured to recover the oil from the second oil separator to the refrigerant inflow port.

Provided is a compression system including a compressor configured to compress and discharge a refrigerant and comprising a refrigerant inflow port through which the refrigerant flows in and an oil recovery port for recovering oil, a plurality of oil separator configured to separate the oil which is included in the refrigerant discharged from the compressor and comprising a first oil separator into which the refrigerant discharged from the compressor flows and a second oil separator connected to the first oil separator in series along a travelling path of the refrigerant, a first recovery pipe configured to recover the oil from the first oil separator to the oil recovery port, and a second recovery pipe configured to recover the oil from the second oil separator to the refrigerant inflow port.

A laundry treating apparatus includes a 2-tank structure including a distillation tank and a washing tub. The laundry treating apparatus includes the washing tub that defines an inner space configured to receive laundry, the distillation tank configured to store liquid carbon dioxide, a compressor configured to receive gaseous carbon dioxide evaporated from the liquid carbon dioxide in the distillation tank, the compressor being configured to discharge the gaseous carbon dioxide, a cooler configured to cool the gaseous carbon dioxide discharged from the compressor and to supply the liquid carbon dioxide to the washing tub, and a controller configured to perform a control method. In some cases, a laundry treating apparatus includes a 3-tank structure including a storage tank, a washing tub, and a distillation tank.

A laundry treating apparatus includes a 2-tank structure including a distillation tank and a washing tub. The laundry treating apparatus includes the washing tub that defines an inner space configured to receive laundry, the distillation tank configured to store liquid carbon dioxide, a compressor configured to receive gaseous carbon dioxide evaporated from the liquid carbon dioxide in the distillation tank, the compressor being configured to discharge the gaseous carbon dioxide, a cooler configured to cool the gaseous carbon dioxide discharged from the compressor and to supply the liquid carbon dioxide to the washing tub, and a controller configured to perform a control method. In some cases, a laundry treating apparatus includes a 3-tank structure including a storage tank, a washing tub, and a distillation tank.

A washing machine including a washing tub to wash laundry carbon dioxide; first and second storage tanks to store carbon dioxide; a first flow path connecting a compressor and the first storage tank; a second flow path connecting the compressor and the second storage tank; a first valve to open and close the first flow path; a second valve to open and close the second flow path; and a controller configured to, upon completion of a laundry washing operation, operate the compressor to compress carbon dioxide received from the washing tub, open the first valve to move the compressed carbon dioxide from the compressor along the first flow path to the first storage tank, and, based on pressure in the washing tub, close the first valve and open the second valve to move the compressed carbon dioxide from the compressor along the second flow path to the second storage tank.

A washing machine including a washing tub to wash laundry carbon dioxide; first and second storage tanks to store carbon dioxide; a first flow path connecting a compressor and the first storage tank; a second flow path connecting the compressor and the second storage tank; a first valve to open and close the first flow path; a second valve to open and close the second flow path; and a controller configured to, upon completion of a laundry washing operation, operate the compressor to compress carbon dioxide received from the washing tub, open the first valve to move the compressed carbon dioxide from the compressor along the first flow path to the first storage tank, and, based on pressure in the washing tub, close the first valve and open the second valve to move the compressed carbon dioxide from the compressor along the second flow path to the second storage tank.

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 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.