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冰箱由绝热的箱体和制冷循环系统构成。过去一直采用的发泡剂CFC-11（CCl3F）和致冷剂CFC－12（CCl2F2），由于会破坏臭氧层和地球环境，已于1995年底全面禁用，并转向使用替代物HCFC或HFC，并力图部分使用纯天然的HC。由于需全面更换这些物质，迫切需要重新研讨替代物与周围材
The refrigerator consists of an insulated cabinet and a refrigeration cycle. The blowing agents CFC-11 (CCl3F) and CFC-12 (CCl2F2), formerly used in the past, have been banned completely by the end of 1995 as a result of the destruction of the ozone layer and the Earth’s environment and have been diverted to the use of alternative HCFCs or HFCs Part of the use of pure natural HC. Due to the need for a complete replacement of these substances, there is an urgent need to re-examine alternatives and surrounding materials