ELECTRIC PUMPING UNIT Russian patent published in 1999 - IPC

FIELD: thermal regulation systems for products of aviation and propulsion equipment. SUBSTANCE: electric pumping unit has electric engine with shaft extending from each end of electric engine. Flange is connected to each end of electric engine and rotor is mounted on each end of shaft. Each flange is provided with central bore for accommodating rotor and two axial bores, one in communication with inlet cavity of respective flange and other in communication with outlet cavity of respective flange. Inlet and outlet cavities of both flanges are respectively united via inlet and outlet pipelines mounted in related pairs of axial bores. Inlet pipeline is positioned within outlet pipeline. Axial bore communicated with inlet cavity of each flange makes continuation of axial bore communicated with outlet cavity of the same flange. EFFECT: reduced dimensions of pumping unit and increased outer pressurization. 1 dwg