| 摘要 |
PURPOSE:To provide a proper removal of a crystal of thermal accumulation material adhered around a heat exchanger, facilitate an aquisition of heat, improve a maintenance characteristic, a working characteristic and a reliability characteristic and reduce a consumption power by a method wherein a control circuit which can be alternately inputted to heaters of a first and a second thermal flow controlling and thermal transmitting devices is provided. CONSTITUTION:In the case that a crystal adhered to a cooling device 43 is removed and a thermal resistance is reduced, at first a heater 28 of a first thermal flow controlling transmitting device 2 is turned off. With this arrangement, a thermal transmittance from an evaporating heat exchanger 21 to a condensing heat exchanger 22 is stopped, and a cooling capability of a cooling device 43 is temporarily terminated. Then, an input is added to a heater 38 of the second thermal flow controlling and transmitting device 3. A part of heat generated at a condensor 6 to a freezer device 1 is transmitted from an evaporating heat exchanger 31 to a cooling device 43 within a thermal accumulation tank 1. With this heat, a part of crystal at an interface part of a cooling device 43 is melted and removed and then the crystal is removed from the cooling device 43. After the crystal is removed from the cooling device 43, an input of the heater 38 is terminated and an input is added to the heater 28 so as to perform a thermal accumulation within the thermal accumulation material 42. |
