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1. WO1985000475 - LIQUID COOLED HIGH SPEED SYNCHRONOUS MACHINES

Publication Number WO/1985/000475
Publication Date 31.01.1985
International Application No. PCT/US1984/000775
International Filing Date 21.05.1984
IPC
H02K 19/38 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
19Synchronous motors or generators
16Synchronous generators
38Structural association of synchronous generators with exciting machines
H02K 5/128 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
5Casings; Enclosures; Supports
04Casings or enclosures characterised by the shape, form or construction thereof
12specially adapted for operating in liquid or gas
128using air-gap sleeves or air-gap discs
H02K 9/19 2006.01
HELECTRICITY
02GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
9Arrangements for cooling or ventilating
19for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
CPC
H02K 19/38
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
19Synchronous motors or generators
16Synchronous generators
38Structural association of synchronous generators with exciting machines
H02K 5/128
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
5Casings; Enclosures; Supports
04Casings or enclosures characterised by the shape, form or construction thereof
12specially adapted for operating in liquid or gas
128using air-gap sleeves or air-gap discs
H02K 9/19
HELECTRICITY
02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
KDYNAMO-ELECTRIC MACHINES
9Arrangements for cooling or ventilating
19for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Applicants
  • SUNDSTRAND CORPORATION [US]/[US]
Inventors
  • OLSON, Raymond, N.
Agents
  • WILLIAMSON, Harold, A.
Priority Data
513,33313.07.1983US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) LIQUID COOLED HIGH SPEED SYNCHRONOUS MACHINES
(FR) MACHINE SYNCHRONE A HAUTE VITESSE REFROIDIE PAR LIQUIDE
Abstract
(EN)
The cooling efficiency in a rotary electric machine is improved by providing direct contact between the coolant and the sources of heat while preventing high drag loss from coolant entering the air gap between the moving and stationary parts of the rotary machine. The rotary electric machine such as a brushless generator includes a housing (10), a stator (24) within the housing (10) and a rotor (22) journalled within the housing (10). A stationary element (60) is affixed to the housing (10) and extends axially into a cavity (58) in the rotor (22) and a barrier (48) is provided in the air gap (34) between the stator (24) and the rotor (22). The barrier (48) serves to isolate the flow of coolant to the stator (24) from the air gap (34) and the stationary element (60) serves as an arrangement for mounting, within the rotor (22), components of a permanent magnet generator (90) and an exciter (92) which is wholly contained within the rotor (22). The stationary element (60) is also provided with a conduit (64) for conducting coolant to the various components of the rotor (22).
(FR)
L'efficacité du refroidissement d'une machine rotative électrique est améliorée en assurant un contact direct entre le liquide de refroidissement et les sources de chaleur tout en éliminant les pertes élevées de traînance du liquide de refroidissement entrant dans l'entrefer entre les parties mobiles et stationnaires de la machine rotative. La machine rotative électrique telle qu'un générateur sans balai comprend une enceinte (10), un stator (24) logé dans l'enceinte (10) et un rotor (22) tourillonné dans l'enceinte (10). Un élément stationnaire (60) est fixé à l'enceinte (10) et s'étend axialement dans une cavité (58) du rotor (22) et une barrière (48) est prévue dans l'entrefer (34) entre le stator (24) et le rotor (22). La barrière (48) sert à isoler l'écoulement du liquide de refroidissement vers le stator (24) en provenance de l'entrefer (34) et l'élément stationnaire (60) sert de dispositif au montage dans le rotor (22) de composants d'un générateur à aimant permanent (90) et d'un excitateur (92) qui est entièrement contenu dans le rotor (22). L'élément stationnaire (60) est également pourvu d'un conduit (64) pour acheminer le fluide de refroidissement vers les divers composants du rotor (22).
Also published as
DE3490315
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