EP2507897A2 - Corps coulé à double paroi pour un moteur électrique refroidi par liquide - Google Patents

Corps coulé à double paroi pour un moteur électrique refroidi par liquide

Info

Publication number
EP2507897A2
EP2507897A2 EP10798259A EP10798259A EP2507897A2 EP 2507897 A2 EP2507897 A2 EP 2507897A2 EP 10798259 A EP10798259 A EP 10798259A EP 10798259 A EP10798259 A EP 10798259A EP 2507897 A2 EP2507897 A2 EP 2507897A2
Authority
EP
European Patent Office
Prior art keywords
double
cast body
coolant
walled
liquid
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Withdrawn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
EP10798259A
Other languages
German (de)
English (en)
Inventor
Franz Georg Reiners
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.)
Dietermann & Co KG GmbH
Original Assignee
Dietermann & Co KG 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 Dietermann & Co KG GmbH filed Critical Dietermann & Co KG GmbH
Publication of EP2507897A2 publication Critical patent/EP2507897A2/fr
Withdrawn legal-status Critical Current

Links

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
    • H02K5/06—Cast metal casings
    • 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

Definitions

  • the invention relates to a double-walled cast body for a
  • Liquid-cooled electric machine between whose walls the liquid coolant can be moved.
  • Electrical machines ie electric motors or generators, convert part of the electrically or mechanically introduced energy into heat.
  • the heat dissipation is one of the main influencing factors on the size and thus the weight of an electric machine, which in many cases the limiting or determining parameters of a specific
  • the housing has inner ribs which directly hold the stator core and in
  • Air pressure chambers arranged to force air circulation along the ribs.
  • these ribs can meander for example meandering or undulating.
  • Cooling liquid due to the arrangement of the usually single continuous channel, so that the temperature of the liquid increases continuously to the end of the relatively long channel, which means uneven or partial cooling.
  • JP 8-19218 A also describes a cast body which has internal cavities which serve to distribute cooling water to the surroundings of the stator. From an inner jacket ribs protrude radially outward. Some ribs connect via short sections the inner with the outer jacket to short closed channel sections. Due to the numerous changes in the flow cross section and occurring, temporally variable turbulence results in a high flow resistance, the flow rate of the
  • EP 0 942 515 A2 focuses in particular on the direction of the inlet and outlet of the channels for the coolant, while the
  • EP 1 199 786 A1 concentrates on the more specific binding of the two housing parts. In particular, this document emphasizes that
  • Friction welding are connected to each other, so that should easily result in a good sealing connection.
  • the object of the invention is to propose a double-walled cast body for a liquid-cooled electric machine, in which the coolant essentially ensures uniform, rapid and efficient cooling of the electric machine in the entire flow region of the coolant.
  • Coolant longitudinal channels parallel to the longitudinal center axis of the cast body.
  • the flow path for the coolant is divided accordingly, since in the longitudinal direction always the sum of the distance between the serving as inlet and outlet of the coolant openings must be covered.
  • the distance to be covered by the coolant in the inventive design of the casting greatly shortened. This results in an equally reduced temperature gradient and thus a more uniform and faster cooling of the electrical machine.
  • the length of the annularly arranged coolant channels is also independent of the flow direction of the coolant, ie clockwise or in the
  • these coolant longitudinal channels can be distributed differently in the context of the present invention over the circumference of the casting, in extreme cases, even be arranged directly next to each other.
  • the annularly disposed channels therebetween may correspond to the reduced distance in their direction
  • Modifications can also be achieved an intended different distribution of cooling intensity.
  • the invention is advantageously further developed according to claim 3, characterized in that the coolant longitudinal channels each have their largest cross section in the region of the opening. This measure encourages you along the whole
  • Coolant path in the casting body uniform flow velocity.
  • This very uniform flow velocity also leads to a homogeneous heat dissipation in the entire shell region of the cast body.
  • This uniform flow rate is further promoted by the fact that, as provided in claim 4 under protection, the cross-sectional change is continuous.
  • Reinforcing ribs ensure on the one hand a stabilization of the cast body, on the other hand, the enlargement of the outer surface of the cast body with the result of the additional improved heat exchange to the environment.
  • Claim 7 This material changes are avoided, which reduce the heat conduction within the casting. In addition, the risk of leaks at material transitions is avoided. A one-piece casting is also easy and inexpensive to produce and results in a stable overall
  • this one-piece casting is made by sand casting, for which it has interruptions over its length on opposite sides of the casting for the disposal of Gusskemes (claim 8). These interruptions are closed after the disposal of the casting core by means of covers.
  • Cylinder jacket formed, it can be closed by 2 lids, which are arranged at the two open ends.
  • the cast body is pot-shaped (claim 11), that is, if it already has an integrated bottom, only one lid is on the bottom
  • the cooling in the shell region of the casting according to the invention is so effective and especially in the region of greatest heat radiation of the electric machine arranged so that even by the flow through the shell by means of the coolant in most cases sufficient cooling is achieved.
  • FIG. 1 is a perspective view of the invention
  • FIG. 2 shows a front view of the cast body according to the invention
  • FIG. 3 shows the section B-B from FIG. 2,
  • FIG. 4 shows a side view of the cast body according to the invention
  • FIG. 5 shows the section A-A from FIG. 4,
  • FIG. 7 is a plan view of the cast body according to the invention.
  • the article according to the invention is a cast body 1 which has an annular shape
  • Cover interruptions of the lateral surface after removal of the casting core can be welded, for example.
  • the coolant channels 11 can be seen in cross-section, which are bounded by inner ribs 12 and an inner and an outer shell part 3 ', 3 "The cross-section of the closed coolant channels is advantageously the same over their respective length
  • the both coolant longitudinal channels 5 and 5 'in each case to the opening 6 and 6' evenly expand. This results in a uniform flow / pressure profile, which serves to equalize the flow velocity within the system.
  • the inner ribs 12 are interrupted in order to allow an unimpeded flow of the liquid in the axial direction, which additionally facilitates pressure and temperature compensation.
  • Coolant longitudinal channels 5 and 5 ' is the length of the annular coolant channels 11 regardless of the direction of flow in the clockwise direction or
  • Coolant longitudinal channels 5 and 5 ' can be adjusted so that the amount of coolant flowing along this channel is matched to the sum of the respectively underlying cross sections of the partially annular channels 11. In this way, a flow velocity which is the same everywhere is achieved, as a result of which an extraordinarily good homogeneity of the heat removal over the whole
  • the openings 6 and 6 ' can be exchanged as an inlet or outlet opening.
  • the number and design and dimensioning of the outer reinforcing ribs 4 and the cooling fins 10 can be adapted to the specific requirements of the cast body according to the invention. The same applies to the length of the part-annular channels 11, which at a deviation from the exactly opposite arrangement of the coolant longitudinal channels 5, 5 'a
  • FIGS. 4 and 5 illustrate the overall design of the cast body 1 according to the invention.
  • Covers 8 and 8 'concealed openings are dispensed with if a water-soluble core mass, such as salt, is used instead of core sand. This core mass can then be disposed of without residue.
  • a water-soluble core mass such as salt

Abstract

L'invention concerne un corps coulé à double paroi pour un moteur électrique refroidi par liquide, le liquide de refroidissement pouvant circuler entre les parois du corps coulé. L'invention vise à garantir une bonne évacuation de la chaleur, uniforme, sur l'ensemble de la surface d'enveloppe. A cet effet, la surface d'enveloppe à double paroi (3, 3', 3") du corps coulé (1) est divisée par des nervures intérieures périphériques annulaires (12) en canaux de liquide de refroidissement (11). Parallèlement à l'axe central longitudinal du corps coulé (1), deux canaux longitudinaux de liquide de refroidissement (5, 5') sont créés, dans la zone de ceux-ci, les nervures intérieures (12) sont interrompues, et les canaux longitudinaux de liquide de refroidissement (5, 5') présentent à diverses extrémités, par rapport à l'axe central longitudinal, des ouvertures (6, 6') servant d'orifices d'entrée et de sortie du liquide de refroidissement.
EP10798259A 2009-12-04 2010-12-03 Corps coulé à double paroi pour un moteur électrique refroidi par liquide Withdrawn EP2507897A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009057053 2009-12-04
PCT/EP2010/007349 WO2011066981A2 (fr) 2009-12-04 2010-12-03 Corps coulé à double paroi pour un moteur électrique refroidi par liquide

Publications (1)

Publication Number Publication Date
EP2507897A2 true EP2507897A2 (fr) 2012-10-10

Family

ID=43500021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10798259A Withdrawn EP2507897A2 (fr) 2009-12-04 2010-12-03 Corps coulé à double paroi pour un moteur électrique refroidi par liquide

Country Status (2)

Country Link
EP (1) EP2507897A2 (fr)
WO (1) WO2011066981A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150308456A1 (en) * 2014-02-19 2015-10-29 Honeywell International Inc. Electric motor-driven compressor having bi-directional liquid coolant passage
US9709068B2 (en) 2014-02-19 2017-07-18 Honeywell International Inc. Sealing arrangement for fuel cell compressor
US9537363B2 (en) 2014-04-30 2017-01-03 Honeywell International Inc. Electric motor-driven compressor having an electrical terminal block assembly
CN106160300A (zh) * 2016-03-31 2016-11-23 法乐第(北京)网络科技有限公司 电机的外壳、具有该外壳的电机以及具有该电机的车辆
CN106655631B (zh) * 2016-12-13 2018-12-21 安徽江淮汽车集团股份有限公司 一种混合动力汽车电机的冷却水套结构
EP3624312B1 (fr) * 2018-09-12 2021-08-11 Siemens Mobility GmbH Procédé de fabrication d'une enveloppe de refroidissement de fluide
DE102019211441A1 (de) * 2019-07-31 2021-02-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Gussverfahren mit einer formgebenden Kontur zur Herstellung eines Kernes, Bauteil und System zur Herstellung eines Bauteils

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0819218A (ja) 1994-06-28 1996-01-19 Honda Motor Co Ltd 回転電機の冷却構造
EP0899852B1 (fr) 1997-08-26 2002-10-30 Siemens Aktiengesellschaft Moulage coulé d'un moteur électrique
DE29722432U1 (de) 1997-12-18 1998-02-26 Siemens Ag Elektromotor
DE19809966C1 (de) 1998-03-07 1999-09-16 Daimler Chrysler Ag Flüssigkeitsgekühlter Generator
JP3877898B2 (ja) * 1999-02-23 2007-02-07 三菱電機株式会社 車両用交流発電機
LU90655B1 (en) 2000-10-17 2002-04-18 Delphi Tech Inc Method for manufacturing a double-walled metallic housing for an electric rotating machine
US7322103B2 (en) * 2004-06-04 2008-01-29 Deere & Company Method of making a motor/generator cooling jacket
ES2302621B1 (es) 2006-07-18 2009-05-21 GAMESA INNOVATION & TECHNOLOGY, S.L. Generador electrico refrigerado con tubos embebidos en su cubierta.
DE102007035271A1 (de) 2007-07-27 2009-01-29 Continental Automotive Gmbh Elektromotor
CN201194353Y (zh) * 2008-04-24 2009-02-11 奇瑞汽车股份有限公司 一种电动汽车电机水冷外壳

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011066981A2 *

Also Published As

Publication number Publication date
WO2011066981A3 (fr) 2012-02-23
WO2011066981A2 (fr) 2011-06-09

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