EP1941600A1 - Refroidissement de stator - Google Patents

Refroidissement de stator

Info

Publication number
EP1941600A1
EP1941600A1 EP06784242A EP06784242A EP1941600A1 EP 1941600 A1 EP1941600 A1 EP 1941600A1 EP 06784242 A EP06784242 A EP 06784242A EP 06784242 A EP06784242 A EP 06784242A EP 1941600 A1 EP1941600 A1 EP 1941600A1
Authority
EP
European Patent Office
Prior art keywords
stator
housing
cooling
volume
cooling fluid
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP06784242A
Other languages
German (de)
English (en)
Inventor
Björn Lind
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lind Gas Bearing Technology AB
Original Assignee
Lind Finance and Development AB
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 Lind Finance and Development AB filed Critical Lind Finance and Development AB
Publication of EP1941600A1 publication Critical patent/EP1941600A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D25/0606—Units comprising pumps and their driving means the pump being electrically driven the electric motor being specially adapted for integration in the pump
    • 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
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
    • H02K9/197—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator

Definitions

  • the present invention relates to cooling of an electric motor driving a shaft in an arbitrary application, for example spindles for milling, grinding, drilling and so forth.
  • Figure 1 shows diagrammatically an embodiment of the invention
  • Figure 2 shows another variation of the invention
  • Figure 3 shows a section along the line A-A in Figure 2.
  • Ia and Ib designate an essentially cylindrical housing, which has centrally the stator iron 3 of an electric motor connected to the housing Ia, and a shaft 4.
  • the shaft 4, bearing the tool or the parts it is desired to rotate, can be mounted relative to the housing by any bearing method, for example fluid bearings, magnetic bearings, ball bearings or roller bearings.
  • 7 designates the rotor of an electric motor, which rotor is fastened to the shaft 4.
  • the stator winding 2 of the electric motor is, together with its stator iron 3, received in a space 10 in the housing Ia, Ib.
  • the parts 2, 3 of the electric motor, sealing sleeves 5 and the housing Ia, Ib are cooled by a coolant which is introduced through an inlet 11 (lateral side of the housing in Fig. 1; end wall side of the housing in Fig. 2), flows through the stator winding 2 and the stator iron 3 via channels 8 (winding slots) and leaves the space 10 through an outlet 12 (lateral side of the housing in Fig. 1 ; end wall side of the housing in Fig. 2).
  • the space 10 is thus sealed completely in relation to the rotating parts, the rotor 7 and the shaft 4, with the aid of the cylindrical sealing sleeves 5 arranged between the stator winding 2 and the rotor 7 with the shaft 4, which on the one hand seal in relation to the stator iron, the winding slots 8 of which are sealed in the region 9 between the stator winding and the rotor, and on the other hand are sealed by O rings for example in relation to the housing Ia and Ib.
  • the design of the cooling system as described contributes considerably to the compact design of the unit. 15 indicates diagrammatically electric cables and other connections to the stator of the rotor.
  • the active tool which is fixed to the shaft 4, is not illustrated in the drawing, but it is to be understood that such a tool functions in a known manner.
  • the space 10 is flowed through by a coolant (inlet 11, outlet 12) which cools the stator iron, the stator winding and the housing Ia, Ib.
  • a coolant inlet 11, outlet 12
  • these must be insulated against direct contact with the coolant because the coolant can be electrically conductive or corrosive. This can suitably be effected by means of a thin, heat-conducting film made of a material which is not electrically conductive and is not affected by the coolant.
  • a machinable material 14 which tolerates the coolant has been applied firmly to the outside diameter of the stator iron before the protective film is applied, whereupon the outside diameter of the stator can be machined exactly.
  • 16 designates barriers which are arranged axially, extending from the inside of the housing end wall (on the right in Figure 3) to the stator iron 3

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne un ensemble de refroidissement d'un logement (1a, 1b) qui comprend une entrée (11) et une sortie (12), et dans le volume (10) duquel est disposé un stator qui possède un enroulement (2) de stator et un fer (3) de stator d'un moteur électrique, lequel entraîne un rotor (7) muni de son arbre (4). L'ensemble de l'invention est caractérisé en ce que le volume (10) est séparé des pièces rotatives (7, 4) de manière étanche.
EP06784242A 2005-09-15 2006-09-14 Refroidissement de stator Withdrawn EP1941600A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0502035A SE529854C2 (sv) 2005-09-15 2005-09-15 Anordning för kylning av ett hus samt förfarande
PCT/SE2006/050329 WO2007032740A1 (fr) 2005-09-15 2006-09-14 Refroidissement de stator

Publications (1)

Publication Number Publication Date
EP1941600A1 true EP1941600A1 (fr) 2008-07-09

Family

ID=37865229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06784242A Withdrawn EP1941600A1 (fr) 2005-09-15 2006-09-14 Refroidissement de stator

Country Status (5)

Country Link
EP (1) EP1941600A1 (fr)
DE (1) DE112006002417T5 (fr)
GB (1) GB2443592A (fr)
SE (1) SE529854C2 (fr)
WO (1) WO2007032740A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2500040B (en) * 2012-03-07 2018-07-04 Nidec Sr Drives Ltd Cooling of electrical machines
DE102013204047B4 (de) 2013-03-08 2018-08-30 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Elektrische Einrichtung mit einer Spule
EP3153191A1 (fr) * 2015-10-09 2017-04-12 ECP Entwicklungsgesellschaft mbH Pompe a sang
CN109194037B (zh) * 2018-10-30 2021-06-01 清华大学 一种隔离电机定子、转子所在空间的油冷电机
SE543340C2 (en) * 2019-04-16 2020-12-08 Scania Cv Ab A rotary electric machine and a vehicle provided therewith

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1053647B (de) * 1954-07-01 1959-03-26 Westinghouse Electric Corp Hermetisch gekapseltes, elektrisches Motor-Pumpen-Aggregat
DE19637671C1 (de) * 1996-09-16 1998-02-12 Clouth Gummiwerke Ag Dynamoelektrische Maschine mit einem flüssigkeitsdurchströmten Kühlmantel
DE19904148C1 (de) * 1999-02-03 2000-10-12 Pierburg Ag Elektrische Förderpumpe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007032740A1 *

Also Published As

Publication number Publication date
GB2443592A (en) 2008-05-07
WO2007032740A1 (fr) 2007-03-22
GB0804201D0 (en) 2008-04-16
SE529854C2 (sv) 2007-12-11
DE112006002417T5 (de) 2008-08-21
SE0502035L (sv) 2007-03-16

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