AIR CONDITIONER

• Main Author: OKA YASUHIRO
• Format: Patent
• Language: English; Japanese
• Published: 17.08.2017
• 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 conditioner capable of accurately deciding whether an indoor unit which cannot sufficiently display heating capacity during heating operation exists or not.SOLUTION: A CPU finds out a high pressure saturation temperature Ths by using inputted discharge pressure Ph, finds out a coolant supercooling degree SC of an indoor unit by using the found high pressure saturation temperature Ths and an inputted heat exchanger outlet temperature To, and finds out a maximum coolant supercooling degree SCm of the indoor unit by using the found high pressure saturation temperature Ths and an inputted suction temperature Ts. Then, the CPU decides whether a supercooling degree ratio SCr obtained by dividing the found coolant supercooling degree SC of the indoor unit by the maximum coolant supercooling degree SCm is larger than a threshold supercooling degree ratio Rsc or not. When the supercooling degree ratio SCr is larger than the threshold supercooling degree ratio Rsc, the CPU decides that heating capacity cannot be displayed in the indoor unit and executes non-heating dissolving control.SELECTED DRAWING: Figure 3 【課題】暖房運転時に暖房能力が十分に発揮できていない室内機があるか否かを精度良く判断できる空気調和装置を提供する。【解決手段】ＣＰＵは、取り込んだ吐出圧力Ｐｈを用いて高圧飽和温度Ｔｈｓを求め、求めた高圧飽和温度Ｔｈｓと取り込んだ熱交出口温度Ｔｏを用いて、室内機の冷媒過冷却度ＳＣを求めるとともに、求めた高圧飽和温度Ｔｈｓと取り込んだ吸込温度Ｔｓを用いて、室内機の最大冷媒過冷却度ＳＣｍを求める。次に、ＣＰＵは、求めた室内機の冷媒過冷却度ＳＣを最大冷媒過冷却度ＳＣｍで除した過冷却度比ＳＣｒが閾過冷却度比Ｒｓｃより大きいか否かを判断する。過冷却度比ＳＣｒが閾過冷却度比Ｒｓｃより大きければ、ＣＰＵは、当該室内機で暖房能力が発揮できていないと判断し、不暖房解消制御を実行する。【選択図】図３