To stably supply lubricating oil, in a fluid machinery in which rotating shafts of a plurality of rotating mechanisms are connected to each other in a straight line.
In the inside of a rotating shaft 56 of a compression mechanism 21, an oil supply passage 68 is formed. In the inside of a rotating shaft 36 of an expansion mechanism 22, an oil supply passage 38 is formed. At the lower end of the rotating shaft 56, a boss portion 81 is provided. At the upper end of the rotating shaft 36, a shaft portion 82 engaged into the boss portion 81 is provided. The surroundings of a connecting portion 80 consisting of the boss portion 81 and the shaft portion 82 is covered by an upper bearing 42 of the expansion mechanism 22. The upper bearing 42 supports both of the rotating shaft 36 and the rotating shaft 56.
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HASEGAWA HIROSHI
MATSUI MASARU
OKAICHI ATSUO
TAMURA TOMOICHIRO
WADA MASANOBU
Shigeru Kuroda