AIR CONDITIONER AND CONTROL METHOD THEREOF

• Main Authors: KIM, Munsub, YOON, Cheonseok, JUNG, Dongil, KIM, Junyeong, JUNG, Duhan, CHOI, Jaewoo, KANG, Hyunwuk, SEONG, Taeryong
• Format: Patent
• Language: English; French; Korean
• Published: 25.04.2024
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; RANGES; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; VENTILATING; WEAPONS

An air conditioner according to an embodiment comprises: an outdoor unit which includes a compressor for compressing a refrigerant; a plurality of indoor units which are supplied with the refrigerant from the outdoor unit and perform at least one of cooling and heating operations; a mode switching unit which is connected between the outdoor unit and the plurality of indoor units and switches operation modes of the plurality of indoor units; a high-pressure gas pipe which is connected to the outlet side of the compressor and the mode switching unit; a low-pressure gas pipe which is connected to the inlet side of the compressor and the mode switching unit; a hot gas valve which is provided in a hot gas pipe connecting the high-pressure gas pipe and the low-pressure gas pipe to each other; and a control unit which determines whether a mixed cooling and heating operation is possible, on the basis of indoor temperature and the cooling operation rates of the plurality of indoor units, and controls the hot gas valve on the basis of whether the mixed cooling and heating operation is possible. Un climatiseur selon un mode de réalisation comprend : une unité externe qui comprend un compresseur pour comprimer un fluide frigorigène ; une pluralité d'unités internes qui sont alimentées en fluide frigorigène à partir de l'unité externe et effectuent au moins l'une des opérations de refroidissement et de chauffage ; une unité de commutation de mode qui est connectée entre l'unité externe et la pluralité d'unités internes et commute les modes de fonctionnement de la pluralité d'unités internes ; un tuyau de gaz à haute pression qui est relié au côté de sortie du compresseur et à l'unité de commutation de mode ; un tuyau de gaz basse pression qui est relié au côté admission du compresseur et à l'unité de commutation de mode ; une soupape de gaz chaud qui est disposée dans un tuyau de gaz chaud reliant le tuyau de gaz haute pression et le tuyau de gaz basse pression l'un à l'autre ; et une unité de commande qui détermine si une opération de refroidissement et de chauffage mixte est possible, sur la base de la température intérieure et des vitesses de fonctionnement de refroidissement de la pluralité d'unités internes, et commande la soupape de gaz chaud sur la base du fait que l'opération de refroidissement et de chauffage mixte est possible. 일 실시예에 따른 공기조화기는,　냉매를 압축하는 압축기를 포함하는 실외기, 상기 실외기로부터 냉매를 공급받아 냉방 운전 및 난방 운전 중 적어도 하나의 운전을 수행하는 복수의 실내기, 상기 실외기와 상기 복수의 실내기 사이에 연결되어 상기 복수 실내기의 운전 모드를 전환하는 모드 전환 유닛, 상기 압축기의 토출측과 상기 모드 전환 유닛에 연결된 고압가스관, 상기 압축기의 흡입측과 상기 모드 전환 유닛에 연결된 저압가스관, 상기 고압가스관과 상기 저압가스관을 연결하는 핫가스관에 구비된 핫가스밸브, 실내 온도 및 상기 복수의 실내기의 냉방 운전율에 기초하여 냉난방 혼용 운전 가능 여부를 결정하고, 상기 냉난방 혼용 운전 가능 여부에 기초하여 상기 핫가스밸브를 제어하는 제어부를 포함한다.