SEALED ELECTRIC PUMPING UNIT Russian patent published in 2001 - IPC

FIELD: aircraft and rocket engineering; temperature control systems. SUBSTANCE: proposed sealed electric pumping unit has housing with outlet union made integral with sealed case and furnished with stop for electric motor flange. It has also holder with flange installed in housing bore and connected with housing by fasteners. Holder accommodates electric motor, impeller, fixed bushings enclosing the impellers and diaphragms. Holder has end face wall on which inlet union is made. Electric motor is located in holder at side opposite to end face wall. Outer diameter of electric motor flange is either less than or equal to diameter of housing bore. Diameter of seat surface of electric motor is either larger than or equal to outer diameter of bushings and diaphragms. Flange of holder is made at the same end face of holder as end face wall. EFFECT: simplified design, improved manufacturability. 1 dwg