| 摘要 |
PROBLEM TO BE SOLVED: To provide a noncondensable gas extracting unit capable of extracting gas without increasing its size, with few noises and even during the time the refrigerator is not operating. SOLUTION: A condenser B of a refrigerator body and a condenser 38 of an extraction unit are connected to each other by extraction piping 35. The condenser 38 comprises a Peltier element 40 on the outer wall thereof, condenser fins 43 therein and air-cooling fins outside, so that heat to be exchanged is transferred from the condenser fins 43 to the air-cooling fins 42, and the Peltier element 40 cools the interior of the condenser 38 by its heat transfer function to condense a refrigerant gas alone among a mixture of the refrigerant gas and a noncondensable gas, so as to separate and extract the noncondensable gas.
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