Pumps – Electrical or getter type – Electromagnetic
Patent
1987-06-08
1989-02-28
Croyle, Carlton R.
Pumps
Electrical or getter type
Electromagnetic
310 11, E04B 1502
Patent
active
048080799
ABSTRACT:
The present invention is directed to a magnetic pump for pumping ferrofluids. The magnetic pump in its simplest form has at least two coils which are electrically connected to a multi-phase power source to produce a traveling electromagnetic field. In close proximity to the coils and substantially normal to the axis of the coils is a tube which defines the path of fluid flow. It is preferred that the coils be embedded in a stator of ferromagnetic material and that the stator be cylindrical. Preferably the tube is wound about the cylindrical stator either internal to or external to the stator. In a preferred embodiment of the present invention the tube is placed in an annular gap between cylindrical stators of different diameter and having coils energized so as to produce reinforcing traveling magentic fields.
REFERENCES:
patent: 3187672 (1965-06-01), Baker
patent: 3372644 (1968-03-01), Nilson
patent: 3505644 (1985-03-01), Meisner et al.
patent: 4050851 (1977-09-01), Haavik
Tae in Choi Thesis, University of Florida, "Ferro Fluid Motion in a Rotating Magnetic Field", 1980.
Daniel H. Braymer and A. C. Roe, "Repair Shop Diagrams and Connecting Tables for Lap-Wound Induction Motors", McGraw-Hill Book Company, 1946.
O. A. Glazov, Entrainment of a Ferromagnetic Suspension by a Traveling Magnetic Field, Magnetohydrodynamics Jul.-Sep. 1973, pp. 395-396.
O. A. Glazov Role of Higher Harmonics in Ferrosuspension Motion in a Rotating Magnetic Field, "Magnetohydrodynamics" Oct.-Dec. 1975, pp. 434-438.
O. A. Glazov, Setting a Ferromagnetic Liquid into Motion with a Running Magnetic Field, "Magnetohydrodynamics" Oct.-Dec. 1976, pp. 400-404.
Crowley Christopher J.
Stacy W. Dodd
Croyle Carlton R.
Szczecina Eugene L.
Weins Janine J.
Weins Michael J.
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