METHOD OF OPERATING AUTOMATIC ICE-MAKING MACHINE

PROBLEM TO BE SOLVED: To prevent generation of crack by suppressing excess cooling of ice blocks during an ice-making operation. SOLUTION: An injection type ice-making machine 10 performs an ice-making operation to produce ice blocks by supplying ice-making water to an ice-making chamber 18 cooled by a refrigerating mechanism 14. When the ice blocks are produced, the ice-making operation is completed, and a deicing operation is performed by heating the ice-making chamber 18 by a hot gas while controlling openings of a large valve 32 and a small valve 33 of the refrigerating mechanism 14. In the ice-making operation, a control means 40 opens only the small valve 33, and controls a temperature of the ice-making chamber 18 so that it does not become lower than an adjustment temperature. Further, at a stage prior to completion of ice making just before the completion of the ice making, the control means 40 opens only the small valve 33 so that the temperature of the ice-making chamber 18 does not become lower than a second lower limit temperature. COPYRIGHT: (C)2010,JPO&INPIT