| 摘要 |
PURPOSE:To improve cooling efficiency of a fixed scroll and avoid mixture of oil into compressed gas by dipping up oil stored inside a casing by an oil dipper fixed to a driving shaft so as to cool the fixed scroll through an oil feeding pass. CONSTITUTION:When a driving shaft 7 is rotated, a rotating scroll 11 makes a relative circular movement, centered on an axial line O1-O1, against a fixed scroll 4. Therefore, outside air sucked through an inlet port 5 is compressed inside a compression space 13, and is discharged through a pipe 27 out of a discharge port 6 into a tank 28. At this time, as an oil dipper 18 fixed to the driving shaft 7 dips up a lubricating oil 17, the lubricating oil lubricates bearings 9, 12 and also a bearing 8 and a sealing member 10, etc. through a pass 22. The lubricating oil is also stored in an oil receiver 19, and flows out to the side of a chamber R through a pass 20 and down along an end cover part 4A of the fixed scroll 4, consequently cooling the fixed scroll 4 satisfactorily.
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