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US 5,982,071 AGranted
Cooling of electrical machinery
AssigneeAble Corporation
InventorStephen D. Ehrick
Life of this patent
Estimating the term…
Abstract
An electrical machine has a stator, and a rotor defining an axis of rotation, the stator including laminations located along that axis, the laminations having protrusions, the protrusions on each lamination being circularly spaced apart about the axis to define cooling air flow passages, and a fan mounted on the rotor to effect flow of cooling air into and through such passages as the rotor rotates.
Claims19
In an electrical machine having a stator, and a rotor defining an axis of rotation, the combination comprising
- a) the stator including laminations located along said axis,
- b) certain of the laminations having protrusions, the protrusions on each lamination being circularly spaced apart about said axis to define cooling air flow passages,
- c) and a fan mounted on the rotor to effect flow of cooling air into and through said passages as the rotor rotates,
- d) the protrusions on said certain laminations being angled relative to planes defined by said certain laminations.
1 more element
In an electrical machine having a stator, and a rotor defining an axis of rotation, the combination comprising
- a) the stator including laminations located along said axis,
- b) certain of the laminations having protrusions, the protrusions on each lamination being circularly spaced apart about said axis to define cooling air flow passages,
- c) and a fan mounted on the rotor to effect flow of cooling air into and through said passages as the rotor rotates,
- d) and wherein the density of the protrusions is increased in the direction of cooling air flow along the stator.
1 more element
Dependencies are inferred from the claim text.