METHOD FOR MANUFACTURING SINGLE CRYSTAL, METHOD FOR MANUFACTURING SINGLE CRYSTAL ICE, METHOD FOR CONTROLLING CRYSTAL ORIENTATION OF SINGLE CRYSTAL ICE, APPARATUS FOR MANUFACTURINGSINGLE CRYSTAL ICE, AND TECHNIQUE FOR MAKING ICE FOR A SKATE-RINK USING SINGLE CRYSTAL ICE

摘要

This invention is a single crystal ice manufacturing method formanufacturing single crystal ice by creating a temperature environment inwhichthe top section of the refrigerating temperature distribution of ahermeticallysealed refrigerating space is held to high temperature and the bottom sectionto low temperature, guiding water to the high-temperature section, anddroppingthe water to the low-temperature section.