F - Mech Eng,Light,Heat,Weapons – 04 – C
Patent
F - Mech Eng,Light,Heat,Weapons
04
C
230/118
F04C 29/02 (2006.01) F01C 21/08 (2006.01) F04C 18/00 (2006.01)
Patent
CA 1054114
ABSTRACT A rotary, sliding vane compressor is provided with means for supplying a relatively small, predetermined quantity of an incompressible fluid, such as lubricating oil, under- neath the vanes. The fluid is injected at a point while the vanes are collapsing within the vane pockets formed within the rotor and is trapped underneath the vane during its movement to the contact point thereby resisting the collapse of the vane so as to hold the vane tip in continuous engagement with the stator surface in the compression cavity. The means for supplying the fluid underneath said vanes includes a device for interrupting flow of lubricant from a sump to the interior of the compressor housing thereby controlling or metering the lubricant and also preventing reverse rotation of the compressor rotor caused by oil pressure under the vanes forcing the vane tips to follow the curvature of the cylinder wall in a backward direction. Means are also provided for relieving the suction created when the vanes move outwardly in their vane slots during startup and for draining any liquid trapped under the vanes. A relief groove is milled into the face of one of the end plates and affords communication between the vane slot and a zone of higher pressure fluid.
250331
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