| 摘要 |
PROBLEM TO BE SOLVED: To form an oil supplying channel within the wall thickness of a casing for introducing a lubricant oil to each object portion to be supplied with the lubricant oil without forming an opening in the outer periphery of the casing. SOLUTION: The wall thickness of the rotor casing 11 incorporates a main oil supplying channel 23 penetrating through both end surfaces of a rotor casing 11, an oil supplying channel 24 for a compression acting space which defines an oil sump 27 communicating with the main oil supplying channel 23 in a joint between the rotor casing 11 and a discharge-side casing 12, and keeps one end opened in the oil sump 27 and the other end opened in a rotor chamber 113, and a discharge-side oil supplying channels 261 and 262 each keeping one end opened in the oil sump 27 and the other end communicating with a shaft seal portions 122a and 122b formed in the discharge-side casing 12. COPYRIGHT: (C)2008,JPO&INPIT
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