| 摘要 |
PURPOSE:To permit the storage of transporting articles in a cold storage chamber even during cold heat accumulating operation by a method wherein at least one set of a ventilating fan is operated in conjunction with a cold storage chamber temperature detector during the cold heat accumulating operation to control the amount of cold air invading into the cold storage chamber. CONSTITUTION:Cold heat accumulating operation is effected by operating a compressor 40. When cold heat accumulating agent 28 is cooled and solidified perfectly by a cooler 29 and the temperature of a cold heat accumulating temperature detector 44 gives a predetermined temperature, lower than a freezing temperature, a cold heat accumulating temperature detector 43 is operated and the operation of the compressor 40 is stopped. In this case, the inside of a cold storage chamber 36 is not cooled to a cold storage temperature and, therefore, the b-contact of a cold storage chamber temperature detector 39 is in a conducted condition and both of ventilating fans 30, 31 are operated to ventilate air. When the inside of the cold storage chamber 36 is cooled to the cold storage temperature, the b-contact of the cold storage chamber temperature detector 30 is released from the conducted condition thereof and, therefore, only the ventilating fan 31 is operated. The temperature in the cold storage chamber 36 is controlled at a set temperature by repeating above-described operation during cold heat accumulating operation whereby the temperature of transporting articles 48, carried into the cold storage chamber 36, may be controlled at a temperature within the range of set temperatures. |
