| 摘要 |
PROBLEM TO BE SOLVED: To provide a rotary gas compressor that supplies a lubricant to the front bearing of front-side blocks supporting the rotary shaft of a rotor without a leakage of the lubricant into a compression chamber. SOLUTION: This rotary gas compressor 10 is provided with a compression chamber 28 of which the capacity increases or decreases following the rotation of a rotor 25 in a cylinder room 24 consisting of the rotor 25 with a rotary shaft 19, a tubular cylinder body 21, a rear-side block 23 having a rear-side bearing 50 for supporting the rotary shaft 19, and a front-side block 22 having a front-side bearing 51 for supporting the rotary shaft 19. The compression mechanism 12 has a lubricant supply route 40 to supply a lubricant from its discharge chamber 33 to a rear-side bearing 50 and front-side bearing 51. The lubricant supply route 40 comprises a rear supply route part 41 formed in a rear-side block 23 and communicating with the bottom of the discharge chamber 33 and the rear-side bearing 50, and a shaft supply route part 42 formed in the rotary shaft 19 and communicating the rear supply route part 41 with the front-side bearing 51. COPYRIGHT: (C)2007,JPO&INPIT
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