PROBLEM TO BE SOLVED: To develop a novel air conditioner for a greenhouse, which avoids a situation where a heat absorber of a heat pump causes performance degradation or inactivation due to adhesion of frost in winter and is capable of efficiently air-conditioning inside the greenhouse without requiring the use of a boiler.SOLUTION: An air conditioner 1 for a greenhouse of the invention comprising a heat absorber 2 which uses air in a greenhouse R as heat source, a heat absorber 3 which uses outside air as haet source, and a heat storage device 4 in which heat storage material H is housed, is characterized by transferring a heat medium from the heat absorber 2 which uses air in the greenhouse R as heat source to the heat storage device 4 to store in the heat storage material H the heat recovered in the greenhouse R in such a case that temperature in the greenhouse R rises in the daytime and a user wants to cool or dehumidify inside the greenhouse R, as well as by transferring a heat medium from the heat absorber 3 which uses outside air as heat source to the heat storage device 4 also to store in the heat storage material H the heat recovered from outside air in the heat absorber 3.【課題】 冬季にヒートポンプの吸熱器に霜が付着し性能劣化や運転不能となる事態を回避し、またボイラーを使用する必要もなく、温室内を効率良く空気調和できるようにした新規な温室空調装置の開発を課題とする。【解決手段】 本発明の温室空調装置１は、温室Ｒ内の空気を熱源とする吸熱器２と、外気を熱源とする吸熱器３と、蓄熱材Ｈを収容した蓄熱装置４とを具えて成り、昼間温室Ｒ内の気温が上昇して温室Ｒ内を冷却や除湿したい場合に、温室Ｒ内の空気を熱源とする吸熱器２から蓄熱装置４に熱媒体を移送し、温室Ｒ内で回収した熱を蓄熱材Ｈに蓄えるものであり、また、この蓄熱装置４には、外気を熱源とする吸熱器３からも熱媒体を移送できるように構成され、当該吸熱器３において外気から回収した熱も蓄熱材Ｈに蓄えられるようにしたことを特徴とする。【選択図】図１
