AIR CONDITIONING DEVICE

• Main Authors: FUNADA KAZUYA, KONDO MASAHIRO, FUJI TOSHIYUKI
• Format: Patent
• Language: English; Japanese
• Published: 20.08.2015
• 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

PROBLEM TO BE SOLVED: To provide an air conditioning device capable of being operated at a discharge temperature lower than a compressor heatproof temperature and at a discharge temperature at which excess performance deterioration does not occur, and controlling an expansion valve capable of coping with discharge temperature change due to a load.SOLUTION: When a theoretical discharge temperature exceeds a target discharge temperature upper limit value and the difference therebetween is made large, an air conditioning device controls the opening of an expansion valve 27 so as to make it large in an opened direction, and controls the opening of the expansion valve 27 so as to make it small in the opened direction when the difference between the theoretical discharge temperature and a threshold is made small. 【課題】圧縮機耐熱温度よりも低い吐出温度で、かつ、過度な性能低下を生じさせない吐出温度で運転することができ、負荷による吐出温度変化にも対応できる膨張弁の制御を行う空気調和装置を提供する。【解決手段】そこで、理論吐出温度が目標吐出温度上限値を超えており、その、目標吐出温度上限値との差が大きいときは膨張弁２７の開度を開く方向に大きく制御し、閾値との差が小さいときは膨張弁２７の開度を開く方向に小さく制御する。【選択図】 図１