Accession Number : ADD015783

Title :   Electro-Rheological Disk Pump.

Descriptive Note : Patent, filed 23 Dec 91, patented 16 Feb 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Iorio, Vincent M ; Loy, Luke W

Report Date : 16 Feb 1993

Pagination or Media Count : 8

Abstract : The invention is directed to a device for pumping electro-rheological fluids comprising a casing that defines an inner rotor chamber having a central inlet opening and a peripheral discharge opening. Rotatably disposed within said chamber is a rotor for imparting energy to the pumped electro-rheological fluid comprising of a plurality of non-conducting coaxial substantially parallel spaced disks. On one face of each disk are embedded one or more electrodes and on the opposing face of each disk are attached one or more conductive surfaces. By selectively applying an electric charge to the embedded electrodes, an electric field is produced between the electrodes and the conducting surfaces of adjacent disks. As a result, the viscosity of the electro-rheological fluid exposed to the applied electric field is increased thereby producing electro-rheological fluid vanes between adjacent disks. When the rotor is placed in rotation and a voltage is applied to the embedded electrodes, the electro-rheological fluid that is not exposed to the applied electric field is accelerated from the center of the rotor towards the outer periphery by the combined action of the electro-rheological fluid vanes and the friction force acting between the fluid and the rotating disks.

Descriptors :   *DISKS, *ELECTRIC FIELDS, *PATENTS, *RHEOLOGY, *PUMPS, BOUNDARIES, CHAMBERS, ELECTRIC CHARGE, ELECTRODES, ENERGY, FLUIDS, FRICTION, INLETS, OPENINGS, PUMPING, ROTATION, ROTORS, SURFACES, VISCOSITY, VOLTAGE, ELECTROCHEMISTRY, CONDUCTIVITY

Subject Categories : Fluid Mechanics
      Electricity and Magnetism
      Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE