AIR CONDITIONER

• Main Authors: OTA Takafumi, AKIYAMA Yoshiyuki, INABA Masami, TANI Kazuhiko, TOKUDI Mikihito
• Format: Patent
• Language: English; French; German
• Published: 05.08.2020
• Subjects: BLASTING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; HEATING; LIGHTING; LIQUEFACTION SOLIDIFICATION OF GASES; MANUFACTURE OR STORAGE OF ICE; MECHANICAL ENGINEERING; REFRIGERATION MACHINES, PLANTS OR SYSTEMS; REFRIGERATION OR COOLING; WEAPONS

The present invention provides an air conditioner with which it is possible to suitably adjust the amount of exchanged heat in accordance with the indoor load applied to indoor units and the required air conditioning performance, irrespective of the size and type of the indoor units, and with which it is possible to ensure comfort. A configuration is adopted such that, in an air-warming operation: the average refrigerant exit temperature, which is obtained by averaging the temperature of the refrigerant exits of indoor heat exchangers 7 in a plurality of indoor units 10, as detected by heat-exchanger-refrigerant-exit temperature probes 34 in the indoor units 10, is determined; the temperature difference between the average refrigerant exit temperature and the refrigerant exit temperatures of the indoor heat exchangers 7 of each of the indoor units 10 is determined; and the degree to which indoor expansion valves 9 of the indoor units 10 are open is controlled such that the determined temperature difference falls within a predetermined temperature difference range. This makes it possible to provide an air conditioner in which comfort is ensured because the amount of exchanged heat is suitably adjusted in accordance with the indoor load applied to the indoor units and the required air conditioning performance, irrespective of the size and type of the indoor units.