Magnetizing apparatus and method专利检索-浪涌电流电流电路专利检索查询-专利查询网

Magnetizing apparatus and method

阅读：681发布：2023-12-06

专利汇可以提供Magnetizing apparatus and method专利检索，专利查询，专利分析的服务。并且Apparatus and method for magnetizing a permanent magnet rotor member for a dynamoelectric machine, the rotor member including four members formed of permanent magnet material each having transversely spaced surface areas to be oppositely polarized. A magnetic stator core member is provided having a yoke portion with a plurality of radially inwardly extending teeth defining winding slots therebetween, the teeth being divided into four circumferentially spaced groups and having inner ends defining a bore for receiving the rotor member. Four windings are provided each comprising a plurality of concentric coils distributed in respective ones of the slots of one of the groups of teeth. The windings are connected in parallel and arranged when energized to excite alternate tooth groups to form opposite poles respectively aligned with the areas to be polarized. A capacitor discharge power supply is coupled to the windings for producing thereacross a momentary high voltage pulse of preselected magnitude thereby to cause a highly peaked surge of current flow in the windings. The preferred method includes establishing a short duration highly peaked magnetic field in preselected regions of space and magnetizing permanently magnetizable members previously disposed in those regions.，下面是Magnetizing apparatus and method专利的具体信息内容。

权利要求

1. Apparatus for magnetizing magnetic means for a rotor device for a dynamoelectric machine, the magnetic means including at least one member formed of permanently magnetizable material aNd having at least one pair of predetermined regions to be oppositely polarized, said apparatus comprising a magnetic stator core member having a yoke portion with a plurality of radially inwardly extending teeth defining winding slots therebetween, said teeth having inner ends defining a bore for receiving said rotor member, at least one pair of windings each comprising coil turns accommodated in selected ones of said slots, said pair of windings being connected and arranged when energized to establish a predetermined magnetic field and thereby magnetize the at least one member and form opposite magnetic poles in the member along the predetermined regions thereof, and power supply means coupled to said windings for producing thereacross a momentary high voltage pulse of preselected magnitude thereby to cause a highly peaked surge of current flow in said windings.

2. The apparatus of claim 1 wherein each of the pair of windings comprise a plurality of distributed coil turns.

3. The apparatus of claim 2 wherein the at least one pair of windings are connected in parallel.

4. The apparatus of claim 1 wherein the power supply means includes energy storage means, and includes means for sequentially coupling the energy storage means across a high voltage source thereby to store energy therein, and thereafter across said windings thereby to produce said pulse.

5. The apparatus of claim 4 wherein said coupling means includes time delay means for initially coupling said energy storage means across the high voltage source for a predetermined time interval and thereafter coupling said energy storage means with the windings.

6. The apparatus of claim 1 wherein the stator core member includes at east one pair of circumferentially spaced pole groups of teeth, each spaced pole group of teeth defining the slots in which the coils comprising a winding associated therewith are accommodated, and each forming a magnetic pole when the respective winding associated therewith is energized.

7. The apparatus of claim 1 wherein said yoke portion is longitudinally slit thereby forming facing portions which normally define a relatively narrow gap therebetween, and further comprising means for moving said facing portions toward each other thereby causing the inner ends of the teeth to engage and clamp a rotor device positioned adjacent thereto.

8. The apparatus of claim 7 wherein the windings are embedded in a mass of relatively flexible insulating material, the insulating material substantially filling the gap.

9. The apparatus of claim 7 wherein the windings each comprise coils having side turn portions respectively positioned in selected ones of the slots and end turn portions respectively extending from opposite sides of said core member, the apparatus further comprising a pair of end cap members respectively abutting said opposite sides of said core member and respectively having cavities therein for accommodating said end turn portions, at least one of said end cap members having an opening therethrough forming an extension of said bore, and means for securing said end cap members and core member in assembled relation.

10. The apparatus of claim 9 wherein said windings are embedded in a mass of relatively flexible insulating material, said insulating material substantially fills the gap and the end cap member cavities, and said securing means comprises opening defining surfaces in said end cap members which are substantially filled with said insulating material.

11. The apparatus of claim 10 further comprising a metallic ring embracing said core member, said ring having a slit in general alignment with the core member gap, said end cap members respectively abutting the opposite sides of said ring, and said moving means comprising clamping means for deforming said ring.

12. The apparatus of claim 11 wherein there are at least one pair of spaced pole groups of said teeth, each said pole group of teeth defining the preselected slots in which the coils comprising one winding Are distributed and forming a magnetic pole when the respective winding is energized, said windings being connected in parallel and having relatively low resistance, the power supply means being of the capacitor discharge type and including time delay means for initially coupling a capacitor across a high voltage direct current potential for a predetermined relatively short charging interval and thereafter coupling said capacitor across said windings thereby to produce the pulse.

13. A method of magnetizing at least two spaced apart predetermined regions of at least two magnetizable members for a dynamoelectric machine rotor device, the method comprising the steps of: positioning the rotor device within a bore formed by a stator core assembly having windings accommodated in slots formed by teeth thereof and aligning preselected regions of the magnetizable members relative to the stator core assembly; clamping the stator core against the rotor device to maintain the alignment of the rotor device and stator core assembly; establishing a highly peaked magnetic field in the preselected regions of the magnetic core by surging a highly peaked voltage through the windings thereby to magnetize the magnetizable members, and removing the rotor device from the stator core assembly.

14. The method of claim 13 wherein the step of establishing a highly peaked magnetic field includes charging energy storage means for a high potential direct current source during a relatively short charging interval, and rapidly discharging the energy storage means through the windings on the stator core assembly.

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Magnetizing apparatus and method

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