# US 11,898,299 B2 · Laundry treating apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,898,299 B2 - Document ID: US11898299B2 - Status: Granted - Kind: B2 - Application number: 17/561,179 - Filed: 2021-12-23 - Published: 2022-04-14 - Granted: 2024-02-13 - Earliest claimed: 2016-05-16 - Assignees: LG Electronics Inc. - Applicants: LG Electronics Inc. - Inventors: Wansik Nam; Donghyun Kim; Jumin Park - Web page: https://patentgrep.com/patent/US11898299B2 ## CPC - D06F 58/10: Drying cabinets or drying chambers having heating or ventilating means - A47B 61/00: Wardrobes - B65D 85/18: for wearing apparel, headwear or footwear - D06F 58/20: General details of domestic laundry dryers (D06F59/00 takes precedence) - D06F 73/02: having one or more treatment chambers - F24F 13/0604: {integrated in or forming part of furniture} - F24F 13/20: Casings or covers - F24F 13/30: Arrangement or mounting of heat-exchangers - D06F 58/206: {Heat pump arrangements} - D06F 58/30: Drying processes (controlling a series of operations in domestic laundry dryers D06F58/32) - D06F 2103/50: related to heat pumps, e.g. pressure or flow rate - D06F 2105/26: Heat pumps - F24F 2013/207: {with control knobs; Mounting controlling members or control units therein} - D06F: LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES - A47B: TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE (furniture jointing F16B) - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) ## Abstract A laundry treating apparatus is disclosed. The laundry treating apparatus includes a cabinet configured to define a receiving space for receiving laundry, the cabinet having an open surface, a door hingedly provided at the cabinet for opening and closing the open surface of the cabinet, a laundry support unit provided in the receiving space for supporting laundry, and a machinery compartment provided in the cabinet for defining a space that is separate from the receiving space, the machinery compartment being provided therein with an air supply unit for dehumidifying or heating air in the receiving space and supplying the dehumidified or heated air into the receiving space. The air supply unit dehumidifies air in a room that communicates with the receiving space in the state in which the door is open. ## Claims ### Claim 1 A laundry treating apparatus comprising: a cabinet that includes an opening at a front side of the cabinet; a door hingedly provided at the cabinet for opening and closing the opening; a first chamber located inside the cabinet for receiving laundry; a second chamber located below the first chamber inside the cabinet; an air supply unit located inside the second chamber and configured to dehumidify or heat air in the first chamber, and supply the dehumidified or heated air into the first chamber; and an opening and closing sensing unit for sensing whether the door is open or closed; wherein a temperature of the air supplied by the air supply unit when the door opens is different from a temperature of the air supplied by the air supply unit when the door closes. ### Claim 2 (depends on 1) The laundry treating apparatus according to claim 1, wherein the temperature of the supplied air is lower when the door is open than when the door is closed. ### Claim 3 (depends on 1) The laundry treating apparatus according to claim 1, wherein the air supply unit comprises: a circulation duct located in the second chamber for circulating the air in the first chamber; and a heat exchanger configured to circulate a refrigerant so as to constitute a refrigerating cycle, the heat exchanger being configured to dehumidify or heat the circulated air along the circulation duct through heat exchange. ### Claim 4 (depends on 3) The laundry treating apparatus according to claim 3, wherein the heat exchanger comprises: an evaporator located in the circulation duct for dehumidifying the air introduced into the circulation duct; a condenser located in the circulation duct for heating the air that has passed through the evaporator; and a compressor located outside the circulation duct for circulating the refrigerant through the evaporator and the condenser. ### Claim 5 (depends on 4) The laundry treating apparatus according to claim 4, wherein a driving frequency for the compressor during operation of the compressor varies based on the door's opening or closing via the opening and closing sensing unit. ### Claim 6 (depends on 5) The laundry treating apparatus according to claim 5, wherein the driving frequency is lower when the door is open than when the door is closed. ### Claim 7 (depends on 4) The laundry treating apparatus according to claim 4, wherein the compressor is an inverter type compressor that converts DC voltage into AC voltage to rotate a motor of the compressor. ### Claim 8 (depends on 4) The laundry treating apparatus according to claim 4, further comprising: a connection member configured to connect the door and the cabinet to each other such that the door selectively opens the first chamber or the door closes the first chamber, wherein the connection member supports the door such that the door is maintained with a predetermined opening angle. ### Claim 9 (depends on 8) The laundry treating apparatus according to claim 8, wherein the opening and closing sensing unit further senses the predetermined opening angle, and a controller in the cabinet detects whether the door is open with the predetermined angle or closed via the opening and closing sensing unit, and adjusts a driving frequency for the compressor. ### Claim 10 (depends on 9) The laundry treating apparatus according to claim 9, wherein the controller decreases the driving frequency for the compressor based on that the predetermined opening angle is increased. ### Claim 11 (depends on 4) The laundry treating apparatus according to claim 4, wherein the heat exchanger further comprises: an expansion valve located between the condenser and the evaporator inside the circulation duct and configured to decrease a temperature of the refrigerant passing through the condenser. ### Claim 12 (depends on 11) The laundry treating apparatus according to claim 11, wherein the expansion valve is an electronic linear expansion valve (LEV) that is configured to adjust an opening degree of the electronic LEV to change the flow rate of the refrigerant, based on the door's opening or closing via the opening and closing sensing unit. ### Claim 13 (depends on 12) The laundry treating apparatus according to claim 12, wherein the opening and closing sensing unit further senses the predetermined opening angle, and a controller in the cabinet detects whether the door is open with the predetermined angle or closed via the opening and closing sensing unit, and adjusts the opening degree of the expansion valve. ### Claim 14 (depends on 13) The laundry treating apparatus according to claim 13, wherein the controller decreases the opening degree of the expansion valve based on that the predetermined opening angle is increased. ### Claim 15 (depends on 1) The laundry treating apparatus according to claim 1, wherein the opening and closing sensing unit comprises: a magnet located in one of the door or the cabinet; and a reed switch located in the other one of the door or the cabinet and configured to detect the magnet. ### Claim 16 (depends on 1) The laundry treating apparatus according to claim 1, further comprising: a moisture supply unit for supplying moisture into the first chamber. ### Claim 17 (depends on 16) The laundry treating apparatus according to claim 16, further comprising: a controller receiving information about whether the door is open or closed from the opening and closing sensing unit and controlling an operation of the air supply unit and the moisture supply unit, wherein the controller operates the moisture supply unit when the door is closed. ### Claim 18 (depends on 1) The laundry treating apparatus according to claim 1, further comprising an air suction unit located closer to the door than a rear side of the first chamber at a bottom of the first chamber for moving the air in the first chamber into the air supply unit. ### Claim 19 (depends on 1) The laundry treating apparatus according to claim 1, further comprising: a laundry support unit provided in the first chamber for supporting laundry. ### Claim 20 (depends on 19) The laundry treating apparatus according to claim 19, wherein the laundry support unit comprises: a hanger bar located in an upper portion inside the first chamber; a driving unit configuring for reciprocating the hanger bar along a width direction of the cabinet; and a controller receiving information about whether the door is open or closed from the opening and closing sensing unit and controlling an operation of the driving unit, wherein the controlled operates the driving unit based on the door's opening or closing via the opening and closing sensing unit.