[특허]Magnetic bearing providing radial and axial load support for a shaft

Magnetic bearing providing radial and axial load support for a shaft 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H02K-007/09
출원번호	US-0136534 (1993-10-14)
발명자 / 주소	McMullen Patrick T. (Simi Valley CA) Huynh Co S. (Glendale CA)
출원인 / 주소	AVCON－Advanced Control Technology, Inc. (Agoura Hills CA 02)
인용정보	피인용 횟수 : 77 인용 특허 : 0

초록 ▼

A magnetic bearing utilizes electromagnets together with a permanent magnet to provide controlled radial and axial (thrust) load support of a shaft including a thrust disc, relative to a housing. In one form, the magnetic bearing includes an arcuate ring of high magnetic flux permeability, and a plurality of electromagnet coils circumferentially positioned about the arcuate ring which generate a radially polarized controllable electromagnetic field. A permanent magnet is spaced radially outwardly from the plurality of electromagnet coils and is linked magnetically to the shaft through both a radial air gap and an axial air gap between the housing and the shaft/thrust disc. A pair of electromagnet coils associated with the arcuate ring and circumscribing a portion of the shaft, generate an axially polarized electromagnetic field which links the shaft to the housing through the axial air gap. The magnetic bearing may include one or more arcuate rings which support electromagnetic coils for generating a radially polarized controllable electromagnetic field.

대표청구항 ▼

A magnetic bearing for supporting a rotatable member including a thrust disc with respect to a stationary member, the magnetic bearing comprising: first means associated with the stationary member for generating a magnetic field, the first magnetic field generating means including first means for generating a radially polarized magnetic field and being linked magnetically to the rotatable member through a first air gap between the rotatable member and the stationary member to provide radial magnetic flux coupling of the rotatable member to the stationary member, wherein the first radially polarized magnetic field generating means includes a first arcuate ring of high magnetic flux permeability and a plurality of controllable electromagnet coils circumferentially positioned about the first arcuate ring and radially spaced from the rotatable member, and a second arcuate ring of high magnetic flux permeability and a plurality of electromagnet coils circumferentially positioned about the second arcuate ring and radially spaced from the rotatable member; second means associated with the stationary member for generating a magnetic field, the second magnetic field generating means including second means for generating a radially polarized magnetic field and being linked magnetically to the rotatable member through the first air gap and a second air gap between the thrust disc and the stationary member, to provide both radial and axial magnetic flux coupling of the rotatable member to the stationary member; and third means associated with the stationary member for generating a magnetic field, the third magnetic field generating means including means for generating an axially polarized magnetic field and being linked magnetically to the rotatable member through the second air gap to provide axial magnetic flux coupling of the rotatable member to the stationary member.

이 특허를 인용한 특허 (77)

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Filatov, Alexei; Bowman, Josh, Homopolar permanent-magnet-biased action magnetic bearing with an integrated rotational speed sensor.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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연합인증

Magnetic bearing providing radial and axial load support for a shaft 원문보기

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이 특허를 인용한 특허 (77)

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Magnetic bearing providing radial and axial load support for a shaft 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (77)

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