| 摘要 |
PROBLEM TO BE SOLVED: To restrain heat transfer from a compressing mechanism to an expanding mechanism in an expander-integrated compressor. SOLUTION: This expander-integrated compressor 200A has an enclosed container 1, a compression mechanism 2, an expansion mechanism 3, a shaft 5, an oil pump 6, and a heat insulation structure 30A. The oil pump 6 is placed between the compression mechanism 2 and the expansion mechanism 3 and sucks oil which is stored in an oil reservoir 25 from an oil suction port 62q to supply the oil to the compression mechanism 2. The heat insulation structure 30A is placed between the oil pump 6 and the expansion mechanism 3 and limits the flow of the oil between an upper tank 25a where the oil suction port 62q is located, and a lower tank 25b where the expansion mechanism 3 is located. Thus heat transfer from oil filling an upper tank 25a to oil filling the lower tank 25b is restrained. COPYRIGHT: (C)2009,JPO&INPIT
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