CONTROL METHOD OF OUTDOOR AIR CONDITIONER

PROBLEM TO BE SOLVED: To provide a control method of an outdoor air conditioner capable of saving energy while securing comfort.SOLUTION: In a control method of an outdoor air conditioner, a plurality of refrigeration circuits formed by connecting outdoor units and indoor units are disposed, condensers have a plurality of stages of distribution flow channels connected in parallel to the corresponding refrigeration circuits, a common vaporization type humidifier is disposed at a downstream side of the condensers, and the outside air is heated by the condensers, and humidified by the vaporization type humidifier to condition the indoor air. Opening/closing operations of the indoor expansion valves of the plurality of stages of distribution flow channels are controlled on the basis of temperature difference between inlets and outlets of the condensers to control the number of stages of the condensers, the corresponding compressor is stopped when all of the indoor expansion valves of the plurality of stages of distribution flow channels are closed to control the number of outdoor units, the control of the number of stages of the condensers and the control of the number of outdoor units are interrupted on the basis of humidity difference between a humidity and an indoor target humidity, and the control of the number of stages of the condensers and the control of the number of outdoor units are implemented with priority on the basis of the humidity difference between the humidity and the indoor target humidity until the humidity reaches the indoor target humidity.SELECTED DRAWING: Figure 1 【課題】快適性を確保しつつ省エネを可能とする外調機の制御方法を提供する。【解決手段】室外機と室内機とを接続することにより形成される冷凍回路が複数設けられ、凝縮器はそれぞれ対応する冷凍回路に対して互いに並列接続された複数段の分配流路を有し、凝縮器の下流側に共通に気化式加湿器が設けられ、凝縮器により外気を加熱し気化式加湿器により外気を加湿して室内の空気を調和する外調機の制御方法であって、凝縮器の入口と出口の温度差に基づいて複数段の分配流路の室内膨張弁の開閉を制御して凝縮器の段数制御を行い、複数段の分配流路の室内膨張弁がすべて閉じられたら対応する圧縮機を停止して室外機の台数制御を行い、室内の目標湿度との湿度差に基づいて凝縮器の段数制御および室外機の台数制御に対する割り込みを行い、室内目標湿度に達するまで凝縮器の段数制御および室外機の台数制御を室内の目標湿度との湿度差に基づいて優先的に行う。【選択図】図１