Pumping installations or systems

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F04Liquid pumps F04DNON-POSITIVE DISPLACEMENT PUMPS

F04D25/00Pumping installations or systems

F04D25/02Units comprising pumps and their driving means F04D25/022comprising a yielding coupling F04D25/024the driving means being assisted by a power recovery turbine F04D25/026with a magnetic coupling F04D25/028the driving means being a planetary gear F04D25/04the pump being fluid-driven F04D25/045the pump wheel carrying the fluid driving means F04D25/06the pump being electrically driven F04D25/0606the electric motor being specially adapted for integration in the pump F04D25/0613the electric motor being of the inside-out type F04D25/062Details of the bearings F04D25/0626Details of the lubrication F04D25/0633Details of the magnetic circuit F04D25/064Details of the rotor F04D25/0646Details of the stator F04D25/0653the motor having a plane air gap F04D25/066Linear Motors F04D25/0666a sensor is integrated into the pump/motor design F04D25/0673Battery powered F04D25/068Mechanical details of the pump control unit F04D25/0686specially adapted for submerged use F04D25/0693Details or arrangements of the wiring F04D25/08the working fluid being air F04D25/082the unit having provision for cooling the motor F04D25/084hand fans F04D25/086hand operated F04D25/088Ceiling fans F04D25/10the unit having provisions for automatically changing direction of output air F04D25/105by changing rotor axis direction F04D25/12the unit being adapted for mounting in apertures F04D25/14and having shutters F04D25/16Combinations of two or more pumps Producing two or more separate gas flows F04D25/163driven by a common gearing arrangement F04D25/166using fans