| 摘要 |
PROBLEM TO BE SOLVED: To solve problems that change of oil supply quantity is large according to pressure difference under operation conditions since always pressure difference exists, excessive oil is supplied and performance may get instable if pressure difference is large, and that productivity drops because the number of components increases in a former structure causing increase of material cost and increase of assembly man-hours, although there is a method for improving lubricity of a vane sliding surface by introducing oil in a high pressure atmosphere to a suction hole in a low pressure atmosphere by using pressure difference for improving a wear state of the vane sliding surface of a hermetic compressor. SOLUTION: Oil 12 collected in a piston internal space 14 is supplied to a suction side of a compression mechanism through a groove 5a keeping communication with a groove 5 while lubricating the slide part of an end surface of a vane 4, with the groove 5 on the end surface of a lower bearing 1 as a flow path. Consequently an effect reliable and excellent in performance improvement is produced. COPYRIGHT: (C)2011,JPO&INPIT
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