US831625A - Ventilated armature. - Google Patents

Ventilated armature. Download PDF

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Publication number
US831625A
US831625A US25628805A US1905256288A US831625A US 831625 A US831625 A US 831625A US 25628805 A US25628805 A US 25628805A US 1905256288 A US1905256288 A US 1905256288A US 831625 A US831625 A US 831625A
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disks
disk
armature
projections
spacing
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Expired - Lifetime
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US25628805A
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James F Mcelroy
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Consolidated Car Heating Co Inc
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Consolidated Car Heating Co Inc
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12Stationary parts of the magnetic circuit
    • H02K1/20Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium

Definitions

  • This invention relates to the construction of ventilated laminated armatures in which are introduced at intervalsbetween groups of the ordinary laminae spacing-disks or lainik projections formed in them' me having lateral to provide air-channels between the groups in radial direction. 7
  • the invention consists in the mannerof construct' v the spacingdisks, arra them in re ation to the other-laminae, providing for the sup rt of end thrust from the bindin means w 'ch secures the whole core u on t earmature-shaft.
  • Eac spacing-disk is formed with a series of protuberances struck up with a spinningtoolor other convenient means and projecting from one side only of the disk, so that the opposite side has a firm bearingthrougho'ut most of its surface upon the adjacent one of the group of ordinary laminae and is pre-' vented from bending by the end thrust,while a substantially free air-channel is formed of a width equal to the amount to which the pro-v jections are offset or a width double that amount when two spacing-disks are placed with their projections in contact to give a wider channel.
  • the spacing-disk forming one side of the air-channel and the abutting disk forming the op )osite side are preferably thicker than the or( inary lamina: and of sufficient stiflness so that.
  • Figure 1v representsan axial section of an armature construction embodying my invention.
  • Fig. 2r represents afface viewof one of the spacing t
  • the saniereferenoe'characters' indicate the same" arts in both views.
  • v 1111 are the ordina laminzeformedwith teeth 12 on theiredges tween which lie the jo inductors and arranged groups or sections by side in solid gl il'oups, are located spacing-disks 13, on wine I prefer to form of several laminae lying teeth 14, similar to the teeth 12, for affording 7 lateral supportto thelatter, each spacingdisk being formed with severalspacing p'rojections 15 15, extending one side only PP d1sk.16, these pro ections be ng cup-like depressions formed with a spinning tool or in any other suitable manner and made without breaking the continuity of the disk, so that the pro ection.
  • the opposed disk Hi may lua plain disk'wilhout spacing projections, or it may lw provided with projections l5"siniilat-1o the projections 15am! abut-ting the lattor. as shown in tho louor part of Fig. l. ⁇ 'lll('ll gives an air-channel of extra width.
  • This channel is entirely unobstructed except b y the spacing projections and affords a minimum of'frie-tion to the outward passage of the air.
  • the several disks or laminae- 11 13 16 are formed with a iertures 17 near the shaft, separated from the shafthole 18 by a continuous ring of metal 19, in which the keyway or notch 20 is formed, and sep'ara t-cd from each other by connecting arms 21, of metal, whereby the strain from thekey is transmitted equally to all parts of the outer body of the disk.
  • These apertures together make lon itudinal air-channels communicating with the radial air-channels formed by the spacing-disks.
  • the edges of the notch 20 form a keying member on the margin of the shaft-hole 18.
  • spacing-washer 22 immediate adjacent the shaft 10 and of a width equal to the width of the air-channel for taking the thrust of the end nut or other locking means which holds together t-hGgWVllOlt-B armature-core and largely relieving the spacing-disks of this strain.
  • Fig. 1 shows how either a single-width .or a double-width air-channel may be formed in the same armature, if desired, with s acing-disks which are duplicates of each 0t ier.
  • the projections are symmetrically laced on opposite sides of the keyway 20 and are at the same radial distances from the center in any two disks, since'the disks are du ilicates.
  • the disks may be assembled facing in either direction and will match up their projections so as to form the double-width space as shown in the lower part of Fig. 1.
  • a ventilated armature comprising a se ries of magnetic core-sections composed of a plurality of the usual plain laminae in solid contact, and a series of spacing-disks interposed between said core-sections and formmg radial air-channels, each s acing-disk havin formed therein on one si e only a series o isolated cup-aha ed s acing pro'ections continuous with t e be y of the isk and abutting an opposite disk, said projections being sufficiently stitfto support the axial pressure, the reverse 'plane side of said spacin -dlsk seating solidly againstthe adjacent p ain lamina.
  • a ventilated armature comprising a shaft, a luralitv of core-sections each com s'ed of a multiplicity of abutting plain agnetic lamina'e,s acing-disks between said sections having sti thrust-resisting cketlar and radial ositions in successive spacmg-disks, the 0th plane and seating solidly against the coresections, together with means for keying said thereon.
  • a ventilated armature comprising coresections composed of plain laminae, andone or more air-channel spacers between ad acent sections composed of a pair of disks plane on the sides abutting the core-sections abut each other in the reposite sides whic s ective disks, said disks with their pro ect1ons being stiff and self-supporting so as to resist the axial pressure.
  • A. spacin -disk for ventilated armatures comprising a sheet-metal plate having a cen tral aperture for the armature-shaft and an adjacent marginal keying member, said disk being plane on one face and formed on;

Description

No. 831,625. PATENTED. SEPT. 25, 1906.
J. F. MQELROY. VENTILATED ARMATURE.
APPLIGATIOH FILED AIPB. 18, 1905.
lnJitqa 585 c-L I'qve 01: x1 AW 1 771 h a m P :1 M 1 9%.
' UNITED STATES PATENT OFFICE.
JAMES F. MCELRQY, OF ALBANY, NEW Y RK; assionsa ro CONSOLIDATED CAR HEATING COMPANY; OF ALBANY, 'NEW roan, A conromvnon OF WEST VIRGIN IA.-
VENTILATED ARmATun EJ- Specification ofLettex-s.l'atent..
Patented sent. as, 1906.
i nm'ion naa April 18,1005. Serial No. 266,288.
To all whom it 11mg. cortccrn:
Be it known that I, James F. MoELnor, a
citizen of the United States, residi at Al-- ban y, in the county of Albany and tateof New York, have invented certain new and useful Improvements in Ventilated Armatures, of which the followufi; specification and accompanying drawings ustrate the invention ina form which I now re ard as the best out of the various forms in which it may be embodied.
This invention relates to the construction of ventilated laminated armatures in which are introduced at intervalsbetween groups of the ordinary laminae spacing-disks or lainik projections formed in them' me having lateral to provide air-channels between the groups in radial direction. 7
The invention consists in the mannerof construct' v the spacingdisks, arra them in re ation to the other-laminae, providing for the sup rt of end thrust from the bindin means w 'ch secures the whole core u on t earmature-shaft.
Eac spacing-disk is formed with a series of protuberances struck up with a spinningtoolor other convenient means and projecting from one side only of the disk, so that the opposite side has a firm bearingthrougho'ut most of its surface upon the adjacent one of the group of ordinary laminae and is pre-' vented from bending by the end thrust,while a substantially free air-channel is formed of a width equal to the amount to which the pro-v jections are offset or a width double that amount when two spacing-disks are placed with their projections in contact to give a wider channel.- The spacing-disk forming one side of the air-channel and the abutting disk forming the op )osite side are preferably thicker than the or( inary lamina: and of sufficient stiflness so that. when the lamina are made with teeth on their edges between which the inductors lic these teeth on the spacing-disks will support themselves and the teeth of tho laminae against lateral bondin; without necessitating any special formation Uljllt teeth of the spacing-disks. lrcl' erably the sparing-disksof a set will be duplicates, and (:ltll disk is s vmnn-tru-al on op posite sides of the ke \'wa v which is formed in it. so that the disks may face in'eiiher di rection. and when two of them are uppos'ml contact. Between the .of the disk and bearing against an -o 1 their projections will always abut, thus enabling either single-width or double-width air-channels to "be formed with a 'single p at.
tern of lisks. This alsotbrin Tgs the SPHQID%- pro ections in the same angu at and radia positions insuccessive disks, so-that all the points of pressure are inline. .60 Of the accompanying drawings, Figure 1v representsan axial section of an armature construction embodying my invention. Fig. 2rrepresents afface viewof one of the spacing t The saniereferenoe'characters' indicate the same" arts in both views.
-101s the central armature-shaft; v 1111 are the ordina laminzeformedwith teeth 12 on theiredges tween which lie the jo inductors and arranged groups or sections by side in solid gl il'oups, are located spacing-disks 13, on wine I prefer to form of several laminae lying teeth 14, similar to the teeth 12, for affording 7 lateral supportto thelatter, each spacingdisk being formed with severalspacing p'rojections 15 15, extending one side only PP d1sk.16, these pro ections be ng cup-like depressions formed with a spinning tool or in any other suitable manner and made without breaking the continuity of the disk, so that the pro ection. is of maximum strength: to bear strain without collapsing. These pro-- '8.5 jections extend from one sideonly of the disk and occupy but a small portion of the total surface, so that the opposite side has a broad firm bearing against the adjacent lamina 11. There is therefore no tendency to, bend the spacing-disk between its pro ections. .The spacing-disks 13 and their abutting disks 16,
forming opposite sides of the radial air-channels, are preferably made thicker than the or-' dinary lamina ll. being of suiiicient stifl'nosstoail'ord lateral sup )ort to the teeth 1'. from tlu-lmses of the tooth H and prevent the latter from bonding without requiring any actual snpp across tho intervening space which womd obstruct the air-outletslwtwm'li too the inductors. The opposed disk Hi may lua plain disk'wilhout spacing projections, or it may lw provided with projections l5"siniilat-1o the projections 15am! abut-ting the lattor. as shown in tho louor part of Fig. l. \\'lll('ll gives an air-channel of extra width.
i This channel is entirely unobstructed except b y the spacing projections and affords a minimum of'frie-tion to the outward passage of the air.
The several disks or laminae- 11 13 16 are formed with a iertures 17 near the shaft, separated from the shafthole 18 by a continuous ring of metal 19, in which the keyway or notch 20 is formed, and sep'ara t-cd from each other by connecting arms 21, of metal, whereby the strain from thekey is transmitted equally to all parts of the outer body of the disk. These apertures together make lon itudinal air-channels communicating with the radial air-channels formed by the spacing-disks. The edges of the notch 20 form a keying member on the margin of the shaft-hole 18. Between eacli spacing disk 13 and its abutting disk 16 I ma interpose a spacing-washer 22 immediate adjacent the shaft 10 and of a width equal to the width of the air-channel for taking the thrust of the end nut or other locking means which holds together t-hGgWVllOlt-B armature-core and largely relieving the spacing-disks of this strain.
This construction of armature rovides for increased strength of s acers, wi e and-little obstructed air-channe and the necessary amount of iron and close rouping of laminae which is required for the best-magnetic ro erties of the armature and also a or s reater solidity of the whole core than has eretoforebeen attained in armatures having equal facilities for ventilation. i
Fig. 1 shows how either a single-width .or a double-width air-channel may be formed in the same armature, if desired, with s acing-disks which are duplicates of each 0t ier. As seen in Fig. 2, the projections are symmetrically laced on opposite sides of the keyway 20 and are at the same radial distances from the center in any two disks, since'the disks are du ilicates. Hence the disks may be assembled facing in either direction and will match up their projections so as to form the double-width space as shown in the lower part of Fig. 1. This of course disenses with the necessity of having a pluralitv of patterns of disk in the same armature when different widths of air-space are desired. It also brings the spacing projections in the samcangular and radial positions in successive disks whether single or double, so that all the oints of )IGSSUR are in continuous parallel lines. I' t is of advantage to make the projections of .frustal form, as shown, for the sake of stiffness and proper abutting surface in the projections.
1 am aware that various kinds of} ulcers for forming ventilated armaturcs are a ready known, including tongues of metal tur'ned edgcwise across the planes of the dis'kp disks .in sockets on the disks, 820.; but all such devices either lack the strength and solidity of my construction, are subject to greater viheat transmission, or are less simple, less easily assembled, and more expensive to build, and I am not aware of any disks ca a ble of rigidassembly on the shaft in cit ier sin le-width or double-width air-passages.
tat I claim as new, and desire to secure by Letters Patent, is
I. A ventilated armature comprising a se ries of magnetic core-sections composed of a plurality of the usual plain laminae in solid contact, and a series of spacing-disks interposed between said core-sections and formmg radial air-channels, each s acing-disk havin formed therein on one si e only a series o isolated cup-aha ed s acing pro'ections continuous with t e be y of the isk and abutting an opposite disk, said projections being sufficiently stitfto support the axial pressure, the reverse 'plane side of said spacin -dlsk seating solidly againstthe adjacent p ain lamina.
2. A ventilated armature comprising a shaft, a luralitv of core-sections each com s'ed of a multiplicity of abutting plain agnetic lamina'e,s acing-disks between said sections having sti thrust-resisting cketlar and radial ositions in successive spacmg-disks, the 0th plane and seating solidly against the coresections, together with means for keying said thereon.
3. A ventilated armature comprising coresections composed of plain laminae, andone or more air-channel spacers between ad acent sections composed of a pair of disks plane on the sides abutting the core-sections abut each other in the reposite sides whic s ective disks, said disks with their pro ect1ons being stiff and self-supporting so as to resist the axial pressure. i
4; A. spacin -disk for ventilated armatures comprising a sheet-metal plate having a cen tral aperture for the armature-shaft and an adjacent marginal keying member, said disk being plane on one face and formed on; the
other face with integral frustal projections distributed symmetrically on both sides of the diameter through said keying member and adapted to abut the projections on a duplicate opp()sitel -'-'facing dis V In testimonv whereof I have hereunto setmy hand, witnesses, the 8th day of April, 1905.
- JAMES F. MCELROY.
Witnesses:
' BEL'LAII. CARLE,
having projections facing alternately in oppo ite dn'cct ions. sepa rate spacer-blocks he d Enxi-zsr D 'J xsax.
bration, obstruction of air-currents, or faulty disks to the shaft to prevent their turning and having. integix'al projections on their opshaped projections on one side only, a utting an opposite disk and located in the same ani r sides of said disks being in the presence of two subscribing i2 5
US25628805A 1905-04-18 1905-04-18 Ventilated armature. Expired - Lifetime US831625A (en)

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844746A (en) * 1956-02-17 1958-07-22 Gen Electric Support means for rotor end windings of dynamoelectric machines
US3123747A (en) * 1964-03-03 Magnetizable core
US3207934A (en) * 1962-04-18 1965-09-21 Allis Louis Co Electric motor with improved cooling means
US3226581A (en) * 1961-06-29 1965-12-28 Motorola Inc Generating system
US4053801A (en) * 1975-10-24 1977-10-11 Allen-Bradley Company Armature structure for permanent magnet d-c motor
US4554475A (en) * 1982-02-25 1985-11-19 Century Electric, Inc. Field coil air vents for dynamoelectric machine
US4614023A (en) * 1982-02-25 1986-09-30 Century Electric, Inc. Field coil for dynamoelectric machine
US4695754A (en) * 1984-05-08 1987-09-22 Dso "Elprom" Permanent magnet rotor for an electrical machine
US5633543A (en) * 1994-12-12 1997-05-27 General Electric Co. Pressure equalizer and method for reverse flow ventilated armature in power generator
US6583526B2 (en) * 1999-10-19 2003-06-24 General Electric Company Generator stator core vent duct spacer posts
GB2419475A (en) * 2004-10-22 2006-04-26 Newage Int Ltd Laminated structure of an electric machine with cooling fluid flow paths
US20220399766A1 (en) * 2021-06-10 2022-12-15 Volvo Car Corporation Stator cooling assembly for electric machine
EP4280426A1 (en) * 2022-05-17 2023-11-22 GE Energy Power Conversion Technology Ltd Synchronous electrical machine, and associated propulsion oriented drive device, boat, and method for cooling such a machine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3123747A (en) * 1964-03-03 Magnetizable core
US2844746A (en) * 1956-02-17 1958-07-22 Gen Electric Support means for rotor end windings of dynamoelectric machines
US3226581A (en) * 1961-06-29 1965-12-28 Motorola Inc Generating system
US3207934A (en) * 1962-04-18 1965-09-21 Allis Louis Co Electric motor with improved cooling means
US4053801A (en) * 1975-10-24 1977-10-11 Allen-Bradley Company Armature structure for permanent magnet d-c motor
US4614023A (en) * 1982-02-25 1986-09-30 Century Electric, Inc. Field coil for dynamoelectric machine
US4554475A (en) * 1982-02-25 1985-11-19 Century Electric, Inc. Field coil air vents for dynamoelectric machine
US4695754A (en) * 1984-05-08 1987-09-22 Dso "Elprom" Permanent magnet rotor for an electrical machine
US5633543A (en) * 1994-12-12 1997-05-27 General Electric Co. Pressure equalizer and method for reverse flow ventilated armature in power generator
US6583526B2 (en) * 1999-10-19 2003-06-24 General Electric Company Generator stator core vent duct spacer posts
GB2419475A (en) * 2004-10-22 2006-04-26 Newage Int Ltd Laminated structure of an electric machine with cooling fluid flow paths
US20220399766A1 (en) * 2021-06-10 2022-12-15 Volvo Car Corporation Stator cooling assembly for electric machine
EP4280426A1 (en) * 2022-05-17 2023-11-22 GE Energy Power Conversion Technology Ltd Synchronous electrical machine, and associated propulsion oriented drive device, boat, and method for cooling such a machine

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