| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an air conditioner intended for plastic greenhouses for horticultural farming, capable of making a uniform air conditioning for the temperature in a plastic greenhouse without reducing fanning levels in making a dehumidifying operation. <P>SOLUTION: The an air conditioner intended for plastic greenhouses for horticultural farming includes: a heat exchanger 14 for reheating use installed on the downstream side of the fanning channel of an in-greenhouse-side heat exchanger 9; a cooling medium circuit for reheating use functioning to introduce part of a gas cooling medium extruded from a compressor 4 into the heat exchanger 14 for reheating use and join the cooling medium liquefied by the heat exchanger 14 for reheating use into a cooling medium flow channel between an expansion valve 8 and the in-greenhouse-side heat exchanger 9; an expansion valve 15 for reheating use installed on the downstream side of the heat exchanger 14 for reheating use in the cooling medium circuit for reheating use and functioning to control a cooling medium level by the divergence of the heat exchanger 14 for reheating use; a temperature sensor 18 installed on the downstream side of the fanning channel of the heat exchanger 14 for reheating use and functioning to detect air temperature; and a control unit 3 functioning to variably control the divergence of the expansion valve 15 for reheating use so that the air temperature detected by the temperature sensor 18 comes to a preset target value in the case of conducting dehumidifying operation. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
