发明授权
US5605049A Exhaust system for a cryogenic freezer 失效
低温冷冻机排气系统

Exhaust system for a cryogenic freezer
摘要:
Method and apparatus for controlling removal of gaseous cryogen from a continuous tunnel type freezer wherein the cryogen and product to be frozen travel in counterflow heat exchange relation to minimize ambient atmosphere moving into the tunnel and out of the exhaust system with the exhausted gaseous cryogen.
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