| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas compressor capable of reducing friction between a vane and a wall face of a vane channel in a rotation region where the vane receives strong reaction force from the wall face of the vane channel and improving its durability. SOLUTION: A compression mechanism 14 stored in a housing 11 has a cylinder 16, a rotor 19 arranged rotatably in its cylinder chamber 17, and the vane 26 held in the vane channel 25 formed in the rotor and receiving pressure of lubricating oil guided into a back pressure chamber 27 formed in a bottom part of the vane channel as back pressure. The vane is pressed toward a peripheral wall 28 of the cylinder 16 and slides in the cylinder chamber 17. The vane 26 is provided with an oil guide passage 45 opened on at least either of a front face 26b and a rear face 26c of the vane 26 in the vane channel 25. Lubricating oil having higher pressure than pressure of lubricating oil introduced into the back pressure chamber 27 is guided into the oil guide passage 45 when the opened face of the oil guide passage 45 of the vane 26 is in the vicinity of a rotation position where it receives the strongest reaction force from a face of the vane channel. COPYRIGHT: (C)2006,JPO&NCIPI
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