| 摘要 |
A cooling unit adapted for use in an auger type ice making machine, a freezing mechanism of an ice cream making machine or the like, composed of a metallic cylindrical evaporator housing and a metallic freezing pipe helically wound around the evaporator housing through a metallic filler for thermal contact with the evaporator housing, the metallic filler being embedded in a space between the evaporator housing and the freezing pipe, wherein the entirety of the freezing pipe is covered with a metallic surface layer membrane formed thereon.
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