A washing machine includes: a frame, a drum receiving laundry, a washing chamber including (i) a first housing defining an opening and a space into which the drum is inserted, (ii) a barrier surrounding the opening and coupled to the first housing, and (iii) a second housing surrounding a first surface of the barrier and coupled to the first housing, a storage tank receiving carbon dioxide to be supplied to the drum, a distillation chamber separating contaminants dissolved in liquid carbon dioxide, an electronic circuit, and a configuration unit. The configuration unit includes a pipe moving the carbon dioxide, a first compressor and a second compressor compressing the carbon dioxide discharged after washing is completed in the drum and moving the compressed carbon dioxide into the storage tank, and an oil separator separating oil from the carbon dioxide compressed in the first compressor and the second compressor.

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 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.

A laundry composition according to the present disclosure includes a solvent selected from the group consisting of solketal and derivatives thereof and a fragrance, wherein the fragrance has a log P value of −1.0 to 4.5, and a washing machine includes a washing unit configured to receive a solvent to wash accommodated fibers; a steam collector configured to condense a gaseous phase discharged from the washing unit and supply the same to a solvent collector; and the solvent collector configured to collect a liquid phase discharged from the washing unit and supply the solvent to a solvent supplier, wherein the solvent collector includes a filter unit configured to remove foreign substances from the solvent supplied from at least one of the steam collector and the washing unit; and a solvent storage configured to store the solvent supplied from the filter unit.

A washing machine includes: a frame, a drum receiving laundry, a washing chamber including (i) a first housing defining an opening and a space into which the drum is inserted, (ii) a barrier surrounding the opening and coupled to the first housing, and (iii) a second housing surrounding a first surface of the barrier and coupled to the first housing, a storage tank receiving carbon dioxide to be supplied to the drum, a distillation chamber separating contaminants dissolved in liquid carbon dioxide, an electronic unit, and a configuration unit. The configuration unit includes a pipe moving the carbon dioxide, a first compressor and a second compressor compressing the carbon dioxide discharged after washing is completed in the drum and moving the compressed carbon dioxide into the storage tank, and an oil separator separating oil from the carbon dioxide compressed in the first compressor and the second compressor.

Provided is a compression system including, in order to minimize an amount of oil mixed with a supplied refrigerant, a compressor configured to compress and discharge the refrigerant, a plurality of oil separators configured to separate the oil included in the refrigerant discharged from the compressor, and a refrigerant pipe configured to connect the compressor and the plurality of oil separators to form a travelling path of the refrigerant, and the plurality of oil separators are connected in series along the travelling path of the refrigerant.

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 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 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.