AIR CONDITIONER AND REFRIGERANT QUANTITY DETERMINATION METHOD

• Main Authors: KANEKO HIROAKI, URATA KAZUMIKI, NAITO KOJI, SETSU SHUN, TADA SHUHEI, TANI KAZUHIKO
• Format: Patent
• Language: English; Japanese
• Published: 26.10.2017
• 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

PROBLEM TO BE SOLVED: To provide an air conditioner, etc. having high reliability and low manufacturing cost.SOLUTION: An air conditioner 100 comprises: a refrigerant circuit 10 in which a compressor 11, an outdoor heat exchanger 13, an outdoor expansion valve 15, a supercooler 17, an indoor expansion valve 16, and an indoor heat exchanger 14 are sequentially connected in a circular pattern, and in which a refrigerant is circulated in a refrigeration cycle; a first temperature sensor 21 provided between the outdoor expansion valve 15 and the supercooler 17 in the refrigerant circuit 10; a second temperature sensor 22 provided between the indoor expansion valve 16 and the supercooler 17 in the refrigerant circuit 10; and a refrigerant quantity determination unit 32 that determines whether a quantity of the refrigerant enclosed in the refrigerant circuit 10 is insufficient or not on the basis of a difference between a detection value of the first temperature sensor 21 and a detection value of the second temperature sensor 22.SELECTED DRAWING: Figure 1 【課題】信頼性が高く、製造コストが安い空気調和機等を提供する。【解決手段】空気調和機１００は、圧縮機１１と、室外熱交換器１３と、室外膨張弁１５と、過冷却器１７と、室内膨張弁１６と、室内熱交換器１４と、が環状に順次接続され、冷凍サイクルで冷媒が循環する冷媒回路１０と、冷媒回路１０において室外膨張弁１５と過冷却器１７との間に設けられる第１温度センサ２１と、冷媒回路１０において室内膨張弁１６と過冷却器１７との間に設けられる第２温度センサ２２と、第１温度センサ２１の検出値と、第２温度センサ２２の検出値と、の差に基づいて、冷媒回路１０に封入されている冷媒の量が不足しているか否かを判定する冷媒量判定部３２と、を備える。【選択図】図１