Patent ID: 11965509
Assignee: GENESIS ADVANCED TECHNOLOGY INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F  H

Claim 0:
1. An internal gear pump, internal gear pump compressor, internal gear pump expander, or internal gear hydraulic motor comprising:
a housing;
an outer rotor having radially inward-facing projections, the outer rotor being mounted on a first bearing for rotation relative to the housing about a first axis defined by a first bearing;
an inner rotor having radially outward-facing projections configured to mesh with the radially inward-facing projections of the outer rotor, the inner rotor being mounted on a second bearing for rotation relative to the housing about a second axis defined by the second bearing, the second axis being parallel to and offset from the first axis;
the inward-facing projections of the outer rotor at least in part defining variable volume chambers between the inward-facing projections of the outer rotor;
the inward-facing projections of the outer rotor and the outward-facing projections of the inner rotor intermeshing at a top dead center (TDC) portion of the pump, compressor, expander or motor; and
the housing including one or more bearing flushing channels for supplying a bearing flushing fluid to at least one of the first bearing and the second bearing, in which, in the absence of the supply of the bearing flushing fluid to the at least one of the first bearing and the second bearing, a working fluid would ingress into the at least one of the first bearing and the second bearing at a default rate, and the bearing flushing fluid is supplied to the at least one of the first bearing and the second bearing at sufficient pressure to reduce ingress of the working fluid into the at least one of the first bearing and the second bearing below a threshold lower than the default rate.