Transmission and compressor or vacuum pump provided with such a transmission
AssigneeAtlas Copco Airpower, Naamloze Vennootschap
InventorsLinus Van Hove, Steven De Man
Life of this patent
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Abstract
A transmission between a drive shaft and a driven shaft comprises a housing and at least a driven gearwheel that is mounted on the driven shaft and a drive gearwheel that is mounted on a drive shaft. The housing comprises two separated chambers, i.e. a first chamber that is connected to the driven shaft and a second chamber which is separate from the first chamber, whereby the first chamber is connected via a channel with the second chamber, whereby around the drive gearwheel or driven gearwheel the second chamber is formed, whereby the form of the second chamber is such that when the gearwheel in question rotates, a gas flow is created around this gearwheel which causes a negative pressure in the channel by the venturi effect.
Claims10
A transmission between drive shaft and a driven shaft, which the transmission comprising a housing and at least a driven gearwheel that is mounted on the driven shaft and a drive gearwheel that is mounted on a drive shaft and engaged with the driven gear to drive the driven gear,
- wherein the housing comprises, a first chamber and a second chamber which is separated from the first chamber by a separating wall,
- wherein the first chamber is connected via a channel with the second chamber, wherein the driven shaft is at least partially disposed within the first chamber and the drive gearwheel or driven gearwheel is disposed within the second chamber, and
- wherein the form of the second chamber is such that when the gearwheel in question rotates a gas flow is created around this gearwheel which causes a negative pressure in the channel by the venturi effect, whereby an oil-air mixture in the first chamber is drawn via the channel into the second chamber.
Dependencies are inferred from the claim text.