Fan with integral disc-shaped drive
AssigneeKollmorgen Technologies Corporation
InventorsFrank Arnold, Jr., Dana F. Geiger
Life of this patent
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Abstract
A unitary fan and drive assembly is formed by means of a disc-shaped plate having a set of fan blades disposed along the periphery of the plate. A compact shape is provided by forming the drive with a rotatable member that is nested within a central recess of the plate. An electric drive is conveniently implemented by an electric motor wherein the rotatable motor member has fan blades disposed along the periphery and wherein the stationary motor member includes a low-profile annular array enclosing an assembly for electrically energizing the motor.
Claims10
An integral fan and D.C. printed circuit electric motor drive assembly comprising:
- a stator assembly;
- an armature assembly having planar windings;
- mounting means for mounting said assemblies for rotating one of said assemblies in a planar path past the other of said assemblies;
- said rotating one of said assemblies including integral therewith and extending circumferentially therearound a set of fan blades;
- said fan blades forming a housing extending axially of the axis of rotation of said one of said assemblies and housing the other of said assemblies;
- said stator assembly including a magnetic circuit assembly directing a magnetic field to said planar windings of said armature in a direction normal to the plane of said armature;
- said armature assembly including a ring of magnetic tape spirally coiled and fixed to said armature and forming a flux return path for said magnetic field;
- and
- means for electrically energizing said planar windings of said armature to impart a rotary motion to said one of said assemblies past the other of said assemblies and to said fan blades integral therewith.
Dependencies are inferred from the claim text.