Radiused stator core end faces
AssigneeDelco Remy International, Inc.
InventorMichael Duane Bradfield
Life of this patent
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Abstract
A method for improving the efficiency of electromagnetic devices having a ferromagnetic core containing electrical windings. The ferromagnetic core is variously configured to include intra-turn ferromagnetic protrusions which are configured to nestle between junctions of the windings, such as in the bends, to increase the amount of ferromagnetic material retained proximal the windings. The increased amount of ferromagnetic material increases electromagnetic efficiency, and reduces the probability that the wiring will be nicked on the edges of the electromagnetic core. By way of example, the intra-turn ferromagnetic projections may be formed within an integrated electromagnetic core, as unitary core extensions, or as singular protrusions attached to the electromagnetic core.
Claims14
In an electromagnetic device having a ferromagnetic core and a set of windings, the improvement comprising:
- a ferromagnetic intra-turn lamination member attached between the core and the windings, said intra-turn lamination member having radiused projections capable of filling curved spaces between turns of the windings whereby an increase in efficiency may be achieved by the inclusion of additional ferromagnetic material proximal the windings.
In an electromagnetic device having a ferromagnetic core with a set of windings, the improvement comprising:
- a plurality of radiused projections extending from the ends of said ferromagnetic core which are capable of filling spaces between the turns within said windings.
A ferromagnetic core for an electromagnetic device which is capable of receiving a winding, comprising:
- (a) a base member containing ferromagnetic material;
- (b) means for retaining a winding upon said base member;
- and
- (c) means for extending said base member into curved spaces between bends of the winding.
A ferromagnetic core for an electromagnetic device, comprising:
- (a) a base member having cutouts for receiving a winding which is bent upon exit from one cutout to then enter another cutout;
- and
- (b) a ferromagnetic extension joined to said base member and having radiused projections which are configured to nestle in the curved spaces that would otherwise exist between the bends of winding exiting said cutouts.
A core extension member capable of being joined to the ferromagnetic core of an electromagnetic device configured to receive a set of windings, comprising:
- (a) a body;
- (b) a first side of said body configured for attachment to one side of said ferromagnetic core;
- and
- (c) a second side of said body containing ferromagnetic material and configured with radiused teeth capable of nestling between the curved spaces within the set of windings, such that additional ferromagnetic material is thereby positioned proximal said windings.
A method of increasing the efficiency of an electromagnetic device utilizing a ferromagnetic core upon which a set of windings are to be engaged, comprising:
- extending the ferromagnetic core with additional ferromagnetic material that is configured with radiused intra-turn projections capable of filling a portion of the intra-turn space that would otherwise exist between the ferromagnetic core and the turns in the windings;
- and
- winding said ferromagnetic core with wiring routed proximal to the radiused intra-turn projections, such that additional ferromagnetic material is retained proximal said windings.
Dependencies are inferred from the claim text.