| 摘要 |
An automatic ice manufacturing apparatus comprises an ice making unit for manufacturing ice in an icing operation cycle, a water tank disposed below the ice making unit for storing water to undergo phase transformation into ice on the ice making unit, a first water spray tube disposed above the ice making unit for spraying the water onto the ice making unit, a water circulating conduit interconnecting the first water spray tube and the water tank, a circulating pump mounted in the circulating conduit for circulating the water between the water tank and the ice making unit, and an overflow pipe disposed within the water tank for controlling the highest water level within the water tank. A branch pipe branched from the circulating conduit on the discharge side of the circulating pump and having an open end portion positioned above and in the vicinity of the overflow pipe so that by lowering a discharge pressure of the circulating pump at the start of a deicing operation cycle, water remaining within the water tank at the end of the icing operation cycle is discharged from the open end of the branch pipe into the overflow pipe to be thereby drained from the apparatus. A valve for opening and closing the branch pipe can be provided. Impurity concentration of water for forming ice can be prevented from increasing. Improved ice making performance and high quality of manufactured ice can be ensured.
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