ELECTRIC PUMP UNIT Russian patent published in 1997 - IPC

FIELD: temperature control systems in aeronautical engineering and rocketry. SUBSTANCE: electric pump unit includes electric motor with shaft projecting on either end of electric motor, impellers mounted at each end of shaft and two flanges connected to ends of electric motor. Flanges are provided with central bores for receiving the impellers whose inlets and outlets are integrated. Unit is also provided with filter and inlet and outlet pipe unions. Each flange is additionally provided with axial bores and two passages; one axial bore is connected with inlet of impeller through one passage and other bore is connected with impeller outlet through other passage. Each axial bore of one flange is connected with respective bore of other flange by means of pipe line. EFFECT: enhanced reliability. 3 cl, 1 dwg