EP0625290A1 - Fer statorique de moteurs triphases sans boitier - Google Patents

Fer statorique de moteurs triphases sans boitier

Info

Publication number
EP0625290A1
EP0625290A1 EP93907762A EP93907762A EP0625290A1 EP 0625290 A1 EP0625290 A1 EP 0625290A1 EP 93907762 A EP93907762 A EP 93907762A EP 93907762 A EP93907762 A EP 93907762A EP 0625290 A1 EP0625290 A1 EP 0625290A1
Authority
EP
European Patent Office
Prior art keywords
cooling
cooling air
stator core
stator
ribs
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.)
Ceased
Application number
EP93907762A
Other languages
German (de)
English (en)
Inventor
Heinz-Dieter Eberhardt
Eberhard Schubert
Ralph Hahnel
Norbert Thomas
Joachim Pax
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.)
VEM-Elektroantriebe GmbH
Original Assignee
VEM-Elektroantriebe GmbH
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 VEM-Elektroantriebe GmbH filed Critical VEM-Elektroantriebe GmbH
Publication of EP0625290A1 publication Critical patent/EP0625290A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium

Definitions

  • the invention relates to a square stator core package without housing three-phase machines with axial cooling channels.
  • fins are welded onto the stator core or already provided when the individual plates are punched, and the intermediate fin channels are ventilated.
  • the predominantly square sheets are provided with individual cooling channels in the corner areas.
  • the cooling air is sucked or pressed in the cooling channels.
  • closed axial cooling channels are known both for electrical machines with a housing in accordance with DE-OS 26 23 493 and for housingless three-phase machines in accordance with DE-OS 37 35 735.
  • Individual stator plates with large cooling air openings are described, which encompass the entire electromagnetic part.
  • instead of the large cooling air Openings arranged radial cooling air recesses so that a larger surface is available for the supply of heat.
  • This solution has the disadvantage that the side length of the square stator core is much larger than the necessary diameter for the magnetic circuit.
  • the object of the invention is to further improve the cooling of caseless three-phase machines, to use the cooling air flow effectively and to make the cross section of the stator core package as small as possible.
  • the object is achieved in that, in the case of three-phase motors without a square cross section, the stator core has axial cooling channels in the corner areas, their position and dimensions being predetermined by the openings arranged in the press frame and longitudinal and transverse cooling webs () in the cooling air windows (1). 2, 3) are arranged and the cooling air openings (4) formed thereby, with the exception of the production opening (6) in the outermost corner region, are continuously provided with ribs (5) on the inside on at least three sides.
  • REPLACEMENT LEAF The arrangement of many longitudinal cooling webs (2) and transverse cooling webs (3) in the cooling air window (1) creates a large number of cooling air openings (4).
  • the cooling surface of the stator plate package that is effectively available for transferring heat to the cooling air is greatly increased.
  • the production opening can also be provided in whole or in part with ribs (5).
  • the position of the cooling air openings is generally apparent from the prior art within the boundary formed by the opening of the press frame.
  • a further enlargement of the flow cross section for cooling is possible according to claim 3, in that the cross section of the cooling air window (1) of the stator core stack formed by the outer edge is equal to or larger than the cross section of the opening of the press frame (7).
  • the figure shows the symmetrical half of a stator core according to the invention of a three-phase main drive.
  • a cooling air window (1) the outer edge of which
  • Opening of the press frame (7) is formed, several longitudinal and transverse cooling webs (2, 3) are arranged.
  • the resulting cooling air openings (4) are continuously provided with ribs (5) on the inside on at least three sides.
  • the width of the longitudinal cooling webs (2) and transverse cooling webs (3) is chosen so that the heat conduction from the adjacent areas "of the magnetic circuit remains large enough so that the cooling air absorbs maximum heat.
  • the number, the position and the dimensioning of the longitudinal and transverse cooling webs (2, 3) and the individual ribs (5) result on the one hand from the requirement to create favorable heat transfer conditions and on the other hand from technological conditions in relation to the cost-effective Production of the individual stand sheets.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Motor Or Generator Cooling System (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

Le refroidissement de moteurs triphasés sans boîtier comportant un ensemble de tôles statoriques s'effectue au moyen de canaux de refroidissement axiaux. Le processus de refroidissement doit être amélioré, le courant d'air de refroidissement étant utilisé de manière aussi rentable que possible et la section transversale de l'ensemble de tôles statoriques étant aussi réduite que possible. A cet effet, des ailettes de refroidissement longitudinales et transversales (2, 3) sont aménagées dans l'ensemble de tôles statoriques dans la zone d'une fenêtre d'air de refroidissement (1) et les orifices d'air de refroidissement (4) ainsi formées comportent intérieurement, en dehors de l'ouverture imposée par la technique de production et située dans le coin le plus extérieur, des nervures (5) sur trois côtés au moins. Cet ensemble de tôles statoriques convient particulièrement bien aux moteurs d'entraînement principaux triphasés.
EP93907762A 1992-03-28 1993-03-25 Fer statorique de moteurs triphases sans boitier Ceased EP0625290A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4210219 1992-03-28
DE4210219 1992-03-28
PCT/DE1993/000292 WO1993020609A1 (fr) 1992-03-28 1993-03-25 Fer statorique de moteurs triphases sans boitier

Publications (1)

Publication Number Publication Date
EP0625290A1 true EP0625290A1 (fr) 1994-11-23

Family

ID=6455311

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93907762A Ceased EP0625290A1 (fr) 1992-03-28 1993-03-25 Fer statorique de moteurs triphases sans boitier

Country Status (3)

Country Link
EP (1) EP0625290A1 (fr)
CZ (1) CZ71694A3 (fr)
WO (1) WO1993020609A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0849858B1 (fr) * 1996-12-17 2002-04-10 Siemens Aktiengesellschaft Machine électrique refroidie par air
FR2764133A1 (fr) * 1997-05-29 1998-12-04 Abb Ind Machine electrique synchrone pourvue d'un dispositif d'excitation
DE10222409B4 (de) * 2002-05-21 2013-02-28 Siemens Aktiengesellschaft Kühlkanalgestaltung bei kompakten Drehstrommotoren
GB201913814D0 (en) * 2019-09-25 2019-11-06 Camcon Auto Ltd Stator assembly cooling
EP3859942A1 (fr) * 2020-02-03 2021-08-04 ABB Schweiz AG Machine électrique ayant capacité de refroidissement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3339094A1 (de) * 1983-10-28 1985-05-09 Franz Kessler KG, 7952 Bad Buchau Rotierende elektrische maschine
DE3625661A1 (de) * 1986-07-29 1988-02-04 Richard Halm Elektromotor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9320609A1 *

Also Published As

Publication number Publication date
CZ71694A3 (en) 1994-11-16
WO1993020609A1 (fr) 1993-10-14

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