| 摘要 |
PURPOSE:To small decrease an amount of lubricating oil being delivered outside an enclosed vessel, by providing a supply oil passage, through which a lubricating oil supply port provided in the upper part of an upper end plate communicates with a supply oil pump delivery port, while a lubricating oil outlet in the bottom part of a compression element. CONSTITUTION:A lubricating oil supply port 38, provided in the upper part of an upper end part 7, communicates with a delivery port 35 of a supply oil pump P through a supply oil passage, while an oil passage 36 and an oil supply path 37, which relate to said supply oil passage, are provided. A lubricating oil outlet 48, for delivering lubricating oil supplied to the lubricating oil supply port 38, is provided in the bottom end of a rotary shaft 5 in the bottom part of a compression element C. Accordingly, an amount of the lubricating oil, delivered to the outside of an enclosed vessel, can be small decreased even in a high speed.
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