| 摘要 |
PROBLEM TO BE SOLVED: To obtain fine granular ice friendly to global environment by a method wherein 100% of fine granular ice is manufactured to promote the utilization of the same in other industrial fields and double the productivity per one set so as to be extended to a fluorocarbon (refrigerant) countermeasure, in which space saving and energy saving are accomplished, since a refrigerant passage is straight and short while the sectional area of the passage is large (in the ice making device manufactured by assembling pieces in a market) in conventional technique whereby many ice blocks are mixed and the ice is utilized only for a field in the degree of cooling of fish bodies. SOLUTION: The passage of refrigerant is formed so as to be spiral. On the other hand, a water passing tube is made so as to be double-layered tube to deprive heat of the refrigerant from both surfaces. A gap between the inner wall surface as well as the outer wall surface of the refrigerant passage and a scraping device is stabilized.
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