| 摘要 |
PURPOSE:To make possible the cooling of a mold by an air-cooled heat exchanger, when the temperature of cooling liquid is higher than that of a refrigerating device, and at the same time concrive to simplify the cooling device by a structure wherein the air-cooled heat exchanger is jointly provided between a change-over mechanism and branched return flow paths so as to arrange in parallel to the condenser of the refrigerating device in order to use a fan in common. CONSTITUTION:A change-over mechanism 18, which can change-over the flow path of return cooling liquid to two directions indicated with the arrows A and B. When the return cooling liquid flows to the direction indicated with the arrow B, the liquid flows in the flow path 20 of an air-cooled heat exchanger 19, which is divided from the change-over mechanism 18 and, at the same time, has branched return flow paths 14a and 14b in common, and finally flows back to a tank top chamber 7a and a tank bottom chamber 7b. A fan 6 is contrived to use in common by disposing both the air-cooled heat exchanger 19 and the condenser 2 of a refrigerating device in an array. |
