[특허]Winding restraint on wound rotor generators or motors and method for forming the same

[미국특허] Winding restraint on wound rotor generators or motors and method for forming the same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02K-009/00
출원번호	US-0053716 (2002-01-24)
발명자 / 주소	Jordan, Lawrence E. Gennari, Paul A.
출원인 / 주소	General Electric Company
대리인 / 주소	Nixon & Vanderhye P.C.
인용정보	피인용 횟수 : 4 인용 특허 : 22

초록 ▼

An electric machine and method for forming the same comprises a rotor, a rotor winding disposed on the rotor and having a body portion and end turn portions, and a non-metallic cylinder arranged around the rotor to restrain both the body portion and the end turn portions of the winding against forces resulting from a rotation of the rotor. No portion of an inner circumference of the cylinder is smaller than an outer circumference of the rotor so that the cylinder may be slid around the rotor without obstruction during construction of the electric machine. The cylinder surrounds a body portion of the rotor and extends axially beyond end faces of the rotor and has a plurality of holes defined therethrough. The rotor includes a plurality of venting passages and at least one opening formed therein to allow a balance plug to be engaged therein.

대표청구항 ▼

1. An electric machine comprising:a rotor;a rotor winding disposed on said rotor, said rotor winding having a body portion and end turn portions; anda non-metallic cylinder arranged around said rotor to restrain both said body portion and said end turn portions of said winding against forces resulting from a rotation of said rotor;wherein no portion of an inner circumference of the cylinder is smaller than an outer circumference of the rotor;the cylinder has a plurality of holes defined therethrough; andsaid plurality of holes are a plurality of balance plug holes and said rotor includes at least one opening formed therein, one of said plurality of balance plug holes being aligned with said opening to allow a balance plug to be engaged into said opening through said one of the plurality of balance plug holes. 2. The electric machine of claim 1, wherein said rotor includes a body portion which extends along a rotational axis of said rotor and two end faces which axially oppose one another, and said cylinder extends along said rotational axis of said rotor so that said cylinder surrounds said body portion of said rotor and extends axially beyond both of said end faces. 3. The electric machine of claim 1, wherein said cylinder extends axially beyond said end turn portions of said rotor winding. 4. The electric machine of claim 1, further comprising a plurality of ventilation holes defined in the cylinder and wherein said rotor includes a plurality of slots formed therein for receiving said winding, said plurality of ventilation holes being respectively positioned with respect to ventilation through-holes in said winding to form a plurality of ventilation passages. 5. The electric machine of claim 1 further comprising a fan arranged at an axial end of said cylinder. 6. The electric machine of claim 1 wherein said rotor includes a groove on its outer periphery and said cylinder includes a protrusion on its inner periphery which engages said groove of said rotor. 7. An electric machine comprising:a rotor;a rotor winding disposed on said rotor, said rotor winding having a body portion and end turn portions; anda non-metallic cylinder arranged around said rotor to restrain both said body portion and said end turn portions of said winding against forces resulting from a rotation of said rotor;wherein the cylinder has a plurality of holes defined therethrough; andsaid plurality of holes are a plurality of balance plug holes and said rotor includes at least one opening formed therein, one of said plurality of balance plug holes being aligned with said opening to allow a balance plug to be engaged into said opening through said one of the plurality of balance plug holes. 8. The electric machine of claim 7 wherein said cylinder is made of a graphite epoxy composite. 9. The electric machine of claim 8 wherein said cylinder is a single integral cylinder. 10. The electric machine of claim 7 wherein said rotor includes a body portion which extends along a rotational axis of said rotor and two end faces which axially oppose one another, and said cylinder extends along said rotational axis of said rotor so that said cylinder surrounds said body portion of said rotor and extends axially beyond both of said end faces. 11. The electric machine of claim 7, wherein said cylinder extends axially beyond said end turn portions of said rotor winding. 12. The electric machine of claim 7 further comprising a plurality of ventilation holes defined in the cylinder and wherein said rotor includes a plurality of slots formed therein for receiving said winding, said plurality of ventilation holes being respectively positioned with respect to ventilation holes in said winding to form a plurality of ventilation passages. 13. The electric machine of claim 12 further comprising a fan arranged at an axial end of said cylinder. 14. The electric machine of claim 7 wherein said rotor includes a groove on its outer periphery and said cylinder includes a protrusion on i ts inner periphery which engages said groove of said rotor.

이 특허에 인용된 특허 (22) 인용/피인용 타임라인 분석

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James ; deceased Jasper L. (late of Greeneville TN by James I. Dye ; administrator), Thermionic-thermoelectric generator system and apparatus.
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[미국특허] Winding restraint on wound rotor generators or motors and method for forming the same 원문보기

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[미국특허] Winding restraint on wound rotor generators or motors and method for forming the same 원문보기

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이 특허에 인용된 특허 (22) 인용/피인용 타임라인 분석

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