| 摘要 |
PURPOSE:To enable the hygienic maintenance of a dispenser, by using a structure to enable the cleaning and sterilization of the channel of a dispenser from the opening means to the dispensing port with hot water without recovering the liquid ice cream mix in the cooling chamber. CONSTITUTION:The ice cream freezer is furnished with the cold controlling means 121 to control the operation of the cooling means of a refrigeration system in a manner to cool the liquid ice cream mix in the cooling chamber in semi-frozen state, the heating means 122 to heat and sterilize the liquid ice cream mix in the cooling chamber, and the cold-keeping controlling means 123 to control the operation of the cooling means in a manner to cool the liquid ice cream mix in the cooling chamber to a low-temperature liquid state. When the cooling switch means 113 is operated, the hot-water supplying means starts the supply of hot water, stops, the supply after a definite period and starts the cooling of the mix by the cold controlling means. When the cold-keeping switch means 115 is operated, the cooling operation is stopped, the sterilization by the heating means is started, and the cold-keeping operation by the cold- keeping means is started after stopping the sterlization operation.
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