JPS6485111A - Dehumidifier - Google Patents

Abstract

PURPOSE:To efficiently perform dehumidification at low temp. and even at a time of high humidity by providing an intermediate electrification state between an electrification stopping state and an electrification state and controlling a cooling element utilized with Peltier effect in a state of a plurality of stages in accordance with the temp. of the cooling side of the cooling element. CONSTITUTION:An electrification controlling circuit for controlling electrification rate of a cooling unit at three stages in accordance with the temp. of the cooling side of the cooling unit 1 is provided. For example, when the temp. of the cooling side of the cooling unit 1 is about 5 deg.C or higher 6A, current circuit 14 is connected with the cooling unit 1 by operation of an electrification controlling circuit and thereby the cooling unit is controlled so that the temp. of the cooling side is lowered. When the temp. of the cooling side reaches the temp. not higher than 5 deg.C, the cooling unit 1 is connected with 2A current circuit 15 by changing over a contact r2. Motion for lowering the temp. of the cooling side is weakened but the temp. of the cooling side is not suddenly raised. When the temp. of the cooling side is held in a state of about 3-5 deg.C and the temp. of a heat build-up side is low, a relay Ry1 for electrification stopping is driven and the contact r1 is opened to stop electrification to the cooling unit 1.