| 摘要 |
<p>PURPOSE:To enable dehumidifying operation until low humidity is obtained by providing a humidity sensor fixed to the surface of a cooler and a control means for reducing the air quantity from an air blower to the cooler side until a dew condensation signal is outputted from the humidity sensor. CONSTITUTION:Dehumidifying operation is carried out while controlling the quantity of air sent to the cooler 2 to keep the surface temp. of the cooler 2 at lower than the dew point by using the humidity sensor 21. Accordingly, the surface temp. of the cooler 2 is increased under high humidity conditions to reduce the difference in temp. from a radiator 4, and dehumidifying operation is efficiently performed. Meanwhile, the air quantity on the cooler 2 side is controlled under low humidity conditions to keep the surface temp. of the cooler 2 at the dew point, and dehumidifying operation is carried out until low humidity is obtained. When the humidity sensor 21 is provided on the upstream side of the air flowing through the cooler 2, the upstream side at the highest temp. is kept at the dew point even when a difference in temp. between the upstream side and the downstream side of the cooler 2 is produced, and the temp. on the downstream side is kept at lower than the dew point.</p> |
