AIR CONDITIONER

• Main Authors: TOGASAKI MASAHIRO, SUZUKI MASAHIRO, GOTO SATOSHI, TAKAHASHI YOSHIAKI, TAKAO DAIKI, FUNAKI TOMOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 13.08.2020
• 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

To provide an air conditioner suppressing deterioration of reliability of a compressor in the air conditioner having an intermediate pressure receiver.SOLUTION: An air conditioner 1 includes: refrigerant circuits 10, 13 connected by refrigerant piping so that a refrigerant flows in a compressor 21, a condenser 23, a second expansion valve 28, an intermediate pressure receiver 81, a first expansion valve 24 and an evaporator 31 in this order; and control means 200 controlling the second expansion valve 28 and the first expansion valve 24. The control means 200 performs SC control for controlling an opening of the condensation side expansion valve so that an SC value that is a difference between a condensation temperature and an outlet temperature becomes a target value, and the control means changes the target value SCt in accordance with a difference Δt between the condensation temperature in the condenser and a peripheral temperature.SELECTED DRAWING: Figure 1 【課題】中圧レシーバを備える空気調和機において、圧縮機の信頼性低下を抑制した空気調和機を提供する。【解決手段】空気調和機１は、冷媒が、圧縮機２１、凝縮器２３、第２膨張弁２８、中圧レシーバ８１、第１膨張弁２４、蒸発器３１の順に流れるように冷媒配管で接続された冷媒回路１０，１３と、第２膨張弁２８及び第１膨張弁２４を制御する制御手段２００を備え、制御手段２００は、制御手段は、凝縮温度と出口温度の差であるＳＣ値が目標値となるように凝縮側膨張弁の開度を制御するＳＣ制御を行い、制御手段は、凝縮器における凝縮温度と周囲温度の差Δｔに応じて、目標値ＳＣｔを変更する。【選択図】図１