| 摘要 |
PURPOSE:To improve self exhaust functions by installing air vent pipes at a positive pressure part within a gear case and eliminating oil mist through the utilization of changes in air pressure within the gear case owing to the rotation of gears. CONSTITUTION:When an accelerating gear 2 is revolved, centrifugal power generated on the surface of the gear 2 owing to its rotation causes negative pressure around a shaft seal part 5 and positive pressure in other parts in a gear case 1. Accordingly, the parts where air vent pipes 9a, 9b are formed come to have positive pressure, and oil mist is discharged from the pipes, while negative pressure in the gear case is maintained, so that oil mist 6 does not leak from the shaft seal part 5. Thus, self oil mist discharge functions of the compressor can be improved.
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