US 12,258,967 B2
Energy transfer machine for corrosive fluids
James Brent Klassen, Osoyoos (CA); and Alexander Korolev, Burnaby (CA)
Assigned to Genesis Advanced Technology Inc., Surrey (CA)
Filed by Genesis Advanced Technology Inc., Surrey (CA)
Filed on Apr. 22, 2024, as Appl. No. 18/642,412.
Application 18/642,412 is a continuation of application No. 17/947,025, filed on Sep. 16, 2022, granted, now 11,965,509.
Claims priority of provisional application 63/349,024, filed on Jun. 3, 2022.
Claims priority of provisional application 63/315,082, filed on Feb. 28, 2022.
Prior Publication US 2024/0271618 A1, Aug. 15, 2024
Int. Cl. F04C 2/08 (2006.01); F04C 2/10 (2006.01); F04C 15/00 (2006.01); F04C 29/02 (2006.01); F04D 29/68 (2006.01); F04C 29/04 (2006.01)
CPC F04C 2/102 (2013.01) [F04C 2/084 (2013.01); F04C 15/0003 (2013.01); F04D 29/685 (2013.01); F04C 29/02 (2013.01); F04C 29/042 (2013.01); F04C 2210/1055 (2013.01); F04C 2210/1094 (2013.01); F04C 2220/20 (2013.01); F04C 2240/40 (2013.01); F04C 2240/50 (2013.01)] 4 Claims
OG exemplary drawing
 
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 inner outer rotor being mounted on a first bearing for rotation relative to the housing about a first axis defined by the first bearing; and
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 or motor; and
the inner rotor including at least one axially outer surface configured to seal against a corresponding axially inner surface of the outer rotor, the at least one axially outer surface of the inner rotor defining a proud portion to seal against the corresponding axially inner surface of the outer rotor;
in which the proud portion includes a ring encircling the second axis and inward of an outer rim of the inner rotor; and
in which the proud portion includes plural segments connected to the ring and oriented radially.