Method of scavenging air and oil and gear pump therefor
This patent describes a gear pump. It comprises first and second intermeshing gears capable of being rotatable driven for pumping a liquid, means for housing the first and second intermeshing gears, the housing means including and inlet means for communicating the gear pump with a source of liquid which may contain a gas, the rotation of the intermeshing gears and the resulting centrifugal force on the liquid being pumped causing separation of liquid from the gas where the liquid supplied to the gear pump through the inlet means contains a gas, wherein the housing means further includes first outlet means for discharging only liquid which has been separated from the gas when the liquid supplied to the gear pump contains a gas, and second outlet means for discharging gas and any remaining liquid, wherein the second outlet means is located in the housing means adjacent a mesh zone of the inter meshing gears on a side of the gears opposite to that of the inlet means, and wherein the first outlet means is located in the housing means intermediate the second outlet means and the inlet means such that the first outlet means is located upstream with respect to the travel direction of the gears and the liquid pumped thereby from the mesh zone of the gears and the second outlet means.
- Assignee:
- Sundstrand Corp., Rockford, IL (USA)
- Patent Number(s):
- US 5004407; A
- Application Number:
- PPN: US 7-412341
- OSTI ID:
- 5143809
- Resource Relation:
- Patent File Date: 26 Sep 1989
- Country of Publication:
- United States
- Language:
- English
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