KR950034989A - Thrust Magnetic Bearings - Google Patents

Thrust Magnetic Bearings Download PDF

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Publication number
KR950034989A
KR950034989A KR1019940011916A KR19940011916A KR950034989A KR 950034989 A KR950034989 A KR 950034989A KR 1019940011916 A KR1019940011916 A KR 1019940011916A KR 19940011916 A KR19940011916 A KR 19940011916A KR 950034989 A KR950034989 A KR 950034989A
Authority
KR
South Korea
Prior art keywords
pole surface
rotor
magnetic pole
stators
pair
Prior art date
Application number
KR1019940011916A
Other languages
Korean (ko)
Inventor
신명호
김용수
Original Assignee
이형도
삼성전기 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 이형도, 삼성전기 주식회사 filed Critical 이형도
Priority to KR1019940011916A priority Critical patent/KR950034989A/en
Priority to FR9500768A priority patent/FR2720457B1/en
Priority to JP7010555A priority patent/JPH07317766A/en
Priority to GB9501974A priority patent/GB2289923A/en
Publication of KR950034989A publication Critical patent/KR950034989A/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/173—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0459—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/044—Active magnetic bearings
    • F16C32/0474—Active magnetic bearings for rotary movement
    • F16C32/0476—Active magnetic bearings for rotary movement with active support of one degree of freedom, e.g. axial magnetic bearings

Abstract

측방향을 지지하기 위한 스러스트(thrust) 자기 베어링이 개시되어 있다. 이 개시된 스러스트 자기 베어링은 샤프트의 일측에 형성된 디스크형 회전자의 반경을 저감할 수 있고, 이 회전자에 통과하는 자속의 경로를 단축할 수 있도록 설계된데 그 특징이 있다.A thrust magnetic bearing for supporting the lateral direction is disclosed. The disclosed thrust magnetic bearing is designed to reduce the radius of the disk-shaped rotor formed on one side of the shaft, and to shorten the path of the magnetic flux passing through the rotor.

상기 회전자의 방경과 두께는 임의로 할 수 있는 것이 아니라 회전자를 비접촉식으로 고정하는 고정자의 자극면과 그 자극면 사이에 감긴 코일 권선부의 폭 그리고, 상기 샤프트에 걸리는 부하에 의하여 결정된다.The diameter and diameter of the rotor are not arbitrary, but are determined by the magnetic pole surface of the stator for non-contactingly fixing the rotor, the width of the coil winding wound around the magnetic pole surface, and the load on the shaft.

본 발명은 상기 고정자의 자극면중 외부에 위치하는 자극면을 내부에 위치한 자극면 방향으로 넓게 형성하도록 하고, 이 형성된 극면중 내부에 위치한 극면의 면적과 도일한 면적이 상기 회전자와 인접하도록 하므로써 상기 회전자의 길이를 저감하여도 종래의 경우와 같은 효과를 얻을 수 있도록 하였다.The present invention is to form a magnetic pole surface located outside of the magnetic pole surface of the stator in the direction of the magnetic pole surface located inside, so that the area of the pole surface and the same area of the pole surface located inside the adjacent pole surface is adjacent to the rotor. Even if the length of the rotor is reduced, the same effects as in the conventional case can be obtained.

또한 자속이 거의 통과하지 않는 회전자의 부분을 잘라내어 그 부분에 의한 와전류와 드래크 토크를 저감하여 상기 샤프트의 고속회전 성능의 향상과 대부하에도 상기 회전자가 스트레스를 덜 받도록 된 유용한 발명이다.In addition, it is a useful invention that the rotor is less stressed by cutting the portion of the rotor that little magnetic flux passes, thereby reducing the eddy current and the drag torque by the portion to improve the high-speed rotational performance of the shaft and heavy loads.

Description

스러스트(THRUST) 자기 베어링Thrust Magnetic Bearings

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제2도는 본 발명에 따른 스러스트 자기 베어링의 일 실시예를 나타낸 단면도, 제3도의 (가)(나)는 제2도의 구체적인 다른 실시예를 나타낸 단면도이고, 특히, (나)는 자속의 경로를 표시한 개략도.2 is a cross-sectional view showing an embodiment of a thrust magnetic bearing according to the present invention, Figure 3 (a) (b) is a cross-sectional view showing another specific embodiment of Figure 2, in particular, (b) is a path of the magnetic flux Indicated schematic.

Claims (8)

상호 소정 간격을 두고 면 대향하는 한쌍의 고정자와, 이 한쌍의 고정자 사이에 자기 부상되어 회전 가능하게 지지되며 일측면에 그 일측의 고장자를 여유 있게 관통하는 샤프트가 결합되는 디스크형 회전자를 포함하는 스러스트 자기 베어링에 있어서, 상기 한쌍의 고정자가 각각, 상기 회전자와 대응하는 측면부에 개구되도록 환형으로 형성된 요크부재와, 이 요크부재에 형성되어 코일이 삽입되는 코일슬롯과, 그 코일슬롯의 개구부 내외측에 형성되는 내외측 자극면을 가지며, 그 중의 외측 자극면이 반경방향으로 넓어지도록 그 코일슬롯의 개구부의 폭이 상기 코일슬롯보다 좁게 형성되어 된 것을 특징으로 하는 스러스트 자기 베어링.A pair of stators facing each other at a predetermined distance from each other, and a disk-shaped rotor coupled to the pair of stators to be magnetically floated and rotatably supported, and to which one side of the stator penetrates a faulty part freely. A thrust magnetic bearing comprising: a yoke member formed in an annular shape such that the pair of stators are opened in a side portion corresponding to the rotor, a coil slot formed in the yoke member, into which a coil is inserted, and an opening in the coil slot. A thrust magnetic bearing having an inner and outer magnetic pole surface formed on the outer side, wherein the width of the opening of the coil slot is narrower than the coil slot so that the outer magnetic pole surface is widened in the radial direction. 제1항에 있어서, 상기 코일슬롯과 상기 외측 자극면 측에 있는 그 코일슬롯의 개구부와의 사이에 경사면이 형성된 것을 특징으로 하는 스러스트 자기 베어링.The thrust magnetic bearing according to claim 1, wherein an inclined surface is formed between the coil slot and an opening of the coil slot on the outer magnetic pole surface side. 제1항에 있어서, 상기 회전자가 상기 한쌍의 고정자의 외경보다 작은 외경을 갖도록 형성되고, 그 한쌍의 고정자가 각각의 외측 자극면의 바깥쪽 모퉁이 부위를 제거하여 되는 경사부를 갖도록 형성된 것을 특징으로 하는 스러스트 자기 베어링.The method of claim 1, wherein the rotor is formed to have an outer diameter smaller than the outer diameter of the pair of stators, the pair of stators are formed so as to have an inclined portion to remove the outer corner portion of each outer pole surface Thrust magnetic bearing. 제3항에 있어서, 상기 한쌍의 고정자 각각의 경사부와 외측 자극면 사이의 경계부가 상기, 회전자의 외경과 동일한 반경으로 형성되는 것을 특징으로 하는 스러스트 자기 베어링.The thrust magnetic bearing according to claim 3, wherein a boundary portion between the inclined portion and the outer magnetic pole surface of each of the pair of stators is formed with the same radius as the outer diameter of the rotor. 제1항에 있어서, 상기 한쌍의 고정자 각각 상기 내측 자극면과 외측 자극면 사이의 자속의 누설을 차폐하도록 상기 코일슬롯의 개구부에 개재되는 자기 차폐부재를 더 구비하여 되는 것을 특징으로 하는 스러스트 자기 베어링.The thrust magnetic bearing according to claim 1, further comprising a magnetic shield member interposed in the opening of the coil slot to shield leakage of magnetic flux between the inner magnetic pole surface and the outer magnetic pole surface, respectively. . 제1항 내지 제5항중의 어느 한 항에 있어서, 상기 회전자가 그 중량이 저감 되도록 그 외주면 중앙부 위에 오목하게 형성된 요흠부를 갖는 것을 특징으로 하는 스러스트 자기 베어링.The thrust magnetic bearing according to any one of claims 1 to 5, wherein the rotor has a recess formed on the outer circumferential center of the rotor so that its weight is reduced. 제1항 내지 제5항중의 어느 한 항에 있어서, 상기 한쌍의 고정자가 각각 상기 내측 자극면과 외측 자극면을 가지며, 상호 결합되는 2개의 내외측 분할 요크 부재로 이루어지는 것을 특징으로 하는 스러스트 자기 베어링.The thrust magnetic bearing according to any one of claims 1 to 5, wherein the pair of stators have two inner and outer divided yoke members each having the inner magnetic pole face and the outer magnetic pole face and are mutually coupled. . 제6항에 있어서, 상기 한쌍의 고정자가 각각 상기 내측 자극면과 외측 자극면을 가지며, 상호 결합되는 2개의 내외측 분할 요크 부재가 이루어지는 것을 특징으로 하는 스러스트 자기 베어링.The thrust magnetic bearing according to claim 6, wherein the pair of stators each has the inner magnetic pole surface and the outer magnetic pole surface, and two inner and outer divided yoke members are coupled to each other. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019940011916A 1994-05-30 1994-05-30 Thrust Magnetic Bearings KR950034989A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019940011916A KR950034989A (en) 1994-05-30 1994-05-30 Thrust Magnetic Bearings
FR9500768A FR2720457B1 (en) 1994-05-30 1995-01-24 Magnetic thrust bearing.
JP7010555A JPH07317766A (en) 1994-05-30 1995-01-26 Magnetic thrust-bearing
GB9501974A GB2289923A (en) 1994-05-30 1995-02-01 Magnetic thrust bearing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019940011916A KR950034989A (en) 1994-05-30 1994-05-30 Thrust Magnetic Bearings

Publications (1)

Publication Number Publication Date
KR950034989A true KR950034989A (en) 1995-12-30

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ID=19384158

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019940011916A KR950034989A (en) 1994-05-30 1994-05-30 Thrust Magnetic Bearings

Country Status (4)

Country Link
JP (1) JPH07317766A (en)
KR (1) KR950034989A (en)
FR (1) FR2720457B1 (en)
GB (1) GB2289923A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5074331B2 (en) * 2008-09-16 2012-11-14 川崎重工業株式会社 Thrust magnetic bearing device
JP2016118225A (en) * 2014-12-19 2016-06-30 株式会社Ihi Magnetic bearing and rotary machine
JP6681802B2 (en) * 2016-08-01 2020-04-15 株式会社Ihi Diskless thrust magnetic bearing and 3-axis active control magnetic bearing
JP6887968B2 (en) 2018-03-28 2021-06-16 ダイキン工業株式会社 Thrust magnetic bearing and turbo compressor with it
CN113328559A (en) * 2021-07-15 2021-08-31 苏州苏磁智能科技有限公司 Magnetic suspension motor, magnetic suspension compressor and turbine motor with high effective magnetic force area

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2961117B2 (en) * 1988-10-07 1999-10-12 株式会社フェローテック Magnetic bearing device
GB8917876D0 (en) * 1989-08-04 1989-09-20 Glacier Metal Co Ltd Magnetic thrust bearing
GB2239295B (en) * 1989-08-04 1993-04-21 Glacier Metal Co Ltd Magnetic bearings
WO1991010073A1 (en) * 1989-12-21 1991-07-11 Nauchno-Proizvodstvennoe Obiedinenie 'vakuummashpribor' Magnetic suspension of high-speed shaft
GB2269862B (en) * 1992-08-22 1996-05-08 Glacier Metal Co Ltd Electromagnetic bearing arrangement

Also Published As

Publication number Publication date
FR2720457B1 (en) 1999-02-19
FR2720457A1 (en) 1995-12-01
GB9501974D0 (en) 1995-03-22
JPH07317766A (en) 1995-12-08
GB2289923A (en) 1995-12-06

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