| 摘要 |
PURPOSE:To achieve temperature regulation with good response and economically, using a compact device by selecting the circulating path corresponding to set temperature range, causing the water kept at said set temperature to circulate through the object to be temperature-regulated. CONSTITUTION:The water in a tank 1 is kept at desired set temperature by controlling a heater 3 and a freezer 5 (numeral 4 is its cooling pipe) by way of temperature sensor 32, and the temperature of objects (molds in a molding machine, rolls, etc.) 28 is regulated by the circulation of said water. The circulating path of the water for temperature regulation is selected by operating electromagnetic valves 10, 13, 16, 23, 25 in the method described above. When said set temperature range is (i) the temperature of cold water (e.g. 20 deg.C) or the temperature of cold and warm water (e.g. 30 deg.C), the water is caused to circulate through the tank 1, the objects 28 and the heat exchanger 6 of the freezer 5. When the set temperature range is (ii) the temperature of warm water (e.g. 40 deg.C), the water is caused to circulate through the tank 1 and the objects 28. |
