| 摘要 |
PROBLEM TO BE SOLVED: To provide a vacuum cooling system or preventing an object to be cooled from being contaminated and for keeping the object hygienic. SOLUTION: A container 1 for accommodating the object to be cooled airtightly, and a vacuum suction means 3 for reducing the pressure in the container 1 are detachably connected, and the container 1 has a vacuum retention means 20 at a connection section 17 with the vacuum suction means 3.
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