| 摘要 |
<p>A device for producing clear ice lumps (17), in particular for use in association with refrigerators or deep-freezers, in which there is created in a tank (16) a water flow which flows around cooling fingers (1), and in which the cooling fingers (1) are in heat-conducting connection with a refrigerant pipe (6) fed with intensely cooled refrigerating medium, with an electric heating device for heating the cooling fingers during freeing of the clear ice lumps, is to be improved with regard to the favourable utilisation of the refrigerating medium and perfect clear ice formation. This is achieved according to the invention in that a thermal barrier (4, 5) is interposed between refrigerant pipe (6) and cooling finger (1), and in that the electric heating device (14) lies behind the thermal barrier (4, 5). An advantageous control circuit, with which a temperature, in particular above -10 DEG C, can be maintained, is constructed in such a manner that the temperature of the cooling finger (1) behind the thermal barrier (4, 5) is held at least approximately constant above a lower limit value by a regulating circuit which controls the electric heating device (14). …<IMAGE>… </p> |
