WO2012159790A1 - Système de refroidissement pour moteur électrique - Google Patents

Système de refroidissement pour moteur électrique Download PDF

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Publication number
WO2012159790A1
WO2012159790A1 PCT/EP2012/054868 EP2012054868W WO2012159790A1 WO 2012159790 A1 WO2012159790 A1 WO 2012159790A1 EP 2012054868 W EP2012054868 W EP 2012054868W WO 2012159790 A1 WO2012159790 A1 WO 2012159790A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling
section
arrangement according
channel
cooling channel
Prior art date
Application number
PCT/EP2012/054868
Other languages
German (de)
English (en)
Inventor
Pedro CASALS IDE
Timo Wehlen
Stephan Scharr
Karl-Hermann Ketteler
Sebastian KORNEXL
Matthias Reisch
Andreas Hoelscher
Original Assignee
Zf Friedrichshafen Ag
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 Zf Friedrichshafen Ag filed Critical Zf Friedrichshafen Ag
Publication of WO2012159790A1 publication Critical patent/WO2012159790A1/fr

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
    • H02K5/20—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 present invention relates to a cooling arrangement for an electrical machine according to the closer defined in the preamble of claim 1. Art.
  • a cooling arrangement for a motor is known. Cooling of the electrical machine is required in order to be able to dissipate the heat losses of the electrical machine resulting in operation.
  • the motor has a cylindrical motor housing section, which is surrounded by a cladding tube and forms with this a laterally closed by annular circumferential sealant cooling jacket space, which is traversed by a coolant from a coolant flow to a coolant outflow.
  • the coolant enters the cooling jacket space at one end relative to the longitudinal axis of the engine and out of the cooling jacket space at the opposite end.
  • the present invention is based on the object to propose a cooling arrangement of the type described above, which is further improved in particular with respect to the structural design and the cooling properties.
  • a cooling arrangement for example for an electric machine or the like, wherein the cooling arrangement at least one Heatsink or the like having at least one cooling channel or the like.
  • the cooling channel has at least one coolant inlet and at least one coolant outlet.
  • the cooling channel comprises at least one section or region designed as a lead or feed and at least one section or region designed as a return, so that advantageously the cooling medium inlet and the cooling medium outlet are directly adjacent, since a flow direction change between the two sections occurs. swept the cooling medium in the cooling channel.
  • the axial length of the heat sink based on the running length of the cooling channel is used almost double, since in one direction, the supply and in the other direction, the return of the cooling medium. In this way, not only the run length, but also the time for heat transfer is significantly increased.
  • Another advantage of the flow direction reversal arises from the fact that due to the directly adjacent transfer points of the cooling medium special liberties with respect to the structural design of the cooling arrangement according to the invention can be realized, whereby a possible adaptation to certain installation situations is considerably simplified.
  • a cylindrical shape or the like is provided as a heat sink, although other shapes are possible.
  • a shape of the heat sink is particularly advantageous as a hollow cylinder, in which, for example, the cooling channel is guided in the form of a helix or a helical spring on the outer circumference of the heat sink.
  • the cooling channel is guided in the form of a helix or a helical spring on the outer circumference of the heat sink.
  • the cooling arrangement according to the invention has the advantage that an electrical machine or the like to be cooled can be mounted in its cavity in the simplest manner. can be taken, wherein the outer circumference of the hollow cylinder is surrounded by a correspondingly increased or adapted housing, so that the provided on the outer circumference of the hollow cylinder cooling channel is limited to the outside through the housing and thus sealed.
  • the most direct contact between the electrical machine to be cooled and the heat sink can be realized.
  • the two sections or regions are formed by approximately two mutually parallel spirals or the like.
  • Coil-shaped courses of the adjacent sections are also conceivable.
  • the profiles of the sections can have a constant but also a variable gradient.
  • the courses of the two sections are identical or correspond, so that the supplied cooling medium is supplied through the first section, for example, over the entire axial length of the heat sink and returned through the adjoining section, for example, over the entire length of the heat sink, to realize a common transfer location for the cooling medium on the heat sink.
  • a countercurrent spiral or spiral cooling jacket for example for electrical machines, is quasi provided as the cooling body.
  • rib elements or the like elements can be provided in the course of the cooling channel, so that in addition to the already optimized run length of the cooling channel also the effective cooling surface is optimized in the cooling arrangement according to the invention.
  • the present invention claims not only separately the proposed cooling arrangement with the inventively designed cooling body, but also in addition the cooling arrangement with respect to an electric machine to be cooled and a housing surrounding the cooling arrangement or the like.
  • the present invention will be further explained with reference to the drawings, in which two possible embodiments are given by way of example. Show it:
  • Figure 1 is a schematic side view of a first possible embodiment of a cooling arrangement according to the invention.
  • Figure 2 is a schematic side view of a second possible embodiment of the cooling arrangement.
  • FIG. 1 and Figure 2 show examples of possible embodiments of a cooling arrangement according to the invention for an electrical machine. Regardless of the respective embodiments, the cooling arrangement comprises a heat sink 1.
  • the heat sink 1 is exemplified as a hollow cylinder having a cooling channel 2 at its outer periphery or on its outer jacket.
  • the cylindrically shaped heat sink 1 can accommodate the electrical machine to be cooled in its cavity or interior provided in the interior, which however is not further illustrated in the figures. In this way, there is a direct contact between the electric machine and the heat sink 1 in order to dissipate the heat generated in the electrical machine, for example in the winding or the stator, via the cooling arrangement according to the invention.
  • the heat sink 1 is surrounded by a merely indicated housing 3, so that the cooling channel 2 running on the circumference of the heat sink 1 is sealed to the outside.
  • the housing 3 is each indicated for simplicity only on a cross-sectional side.
  • the cooling channel 2 has a first section 4 as a supply line and a second section 5 as a return line, so that the cooling medium inlet not shown and also not showndemediumaustritt are immediately adjacent, as these, for example, at one end based on the longitudinal axis 6 of the heat sink 1 and the electrical machine are arranged.
  • the extending on the outer periphery of the heat sink 1 cooling channel 2 with its two sections 4, 5 is helical designed.
  • the two sections 4, 5 of the cooling channel 2 extend over the entire axial length of the heat sink 1, wherein the end 7 of the first section 4 is connected to the beginning 8 of the second section 5 and thus allows the flow reversal of the cooling medium.
  • the two sections 4 and 5 are formed as two helices running approximately parallel to one another.
  • the flow of the cooling medium contained in the first section 4 is directed against the flow of the cooling medium contained in the second section 5.
  • the flow direction reversal at the end 7 of the first section 4 or at the beginning 8 of the second section 5 is indicated by an arrow 9, wherein the flow direction of the cooling medium in the first section 4 by an arrow 10 and the flow direction of the cooling medium in the second section 5 are indicated by an arrow 1 1.
  • FIG 2 the second possible embodiment of the cooling arrangement according to the invention is shown, in which, in contrast to the first embodiment of Figure 1, a cooling rib 12 is provided over the entire length of the cooling channel 2 to increase the effective cooling surface.
  • the cooling fin 12 is provided approximately centrally with respect to the flow cross section of the cooling channel 2. In this way, the cooling channel 2 is divided in the flow direction into two flow areas, which are partially separated from each other by the cooling rib 12, so that the cooling effect is increased in the heat sink 1.
  • the downstream cooling fin 12 may have any shape.
  • the cooling fin may be provided in both sections 4, 5 of the cooling channel 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

L'invention concerne un système de refroidissement pour un moteur électrique, qui comprend au moins un dissipateur thermique (1) présentant au moins un canal de refroidissement (2), ledit canal de refroidissement (2) comportant une entrée de milieu de refroidissement et une sortie de milieu de refroidissement et ledit canal de refroidissement (2) comprenant au moins une première partie (4) se présentant sous forme de conduite d'amenée et au moins une seconde partie (5) se présentant sous forme de conduite de retour, de manière à permettre au moins une inversion du sens d'écoulement du milieu de refroidissement dans le canal de refroidissement (2).
PCT/EP2012/054868 2011-05-26 2012-03-20 Système de refroidissement pour moteur électrique WO2012159790A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011076529.8 2011-05-26
DE102011076529A DE102011076529A1 (de) 2011-05-26 2011-05-26 Kühlanordnung für eine elektrische Maschine

Publications (1)

Publication Number Publication Date
WO2012159790A1 true WO2012159790A1 (fr) 2012-11-29

Family

ID=45876750

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/054868 WO2012159790A1 (fr) 2011-05-26 2012-03-20 Système de refroidissement pour moteur électrique

Country Status (2)

Country Link
DE (1) DE102011076529A1 (fr)
WO (1) WO2012159790A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108667217A (zh) * 2018-05-11 2018-10-16 湘潭大学 一种轴向单槽双l型并流道反向流永磁同步电机冷却系统
CN110912321A (zh) * 2018-09-17 2020-03-24 舍弗勒技术股份两合公司 用于冷却装置的冷却水套及用于电机的冷却装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018200365A1 (de) * 2018-01-11 2019-01-24 Engineering Center Steyr Gmbh & Co. Kg Kühleinheit zur Kühlung einer elektrischen Maschine
DE102019132039A1 (de) * 2019-11-26 2021-05-27 Seg Automotive Germany Gmbh Kühleinheit für eine elektrische Maschine und Verfahren zum Herstellen einer Kühleinheit
DE102020107234A1 (de) 2020-03-17 2021-09-23 Seg Automotive Germany Gmbh Kühleinheit für eine elektrische Maschine und Verfahren zum Herstellen einer Kühleinheit
CN112610384B (zh) * 2020-12-23 2022-05-10 重庆隆鑫通航发动机制造有限公司 起发一体机外壳及起发一体机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159740A (en) * 1977-08-29 1979-07-03 Amf Incorporated Direct expansion jacket for horizontal dough mixers
DE19950660A1 (de) 1999-04-19 2000-10-26 Dietz Motoren Gmbh & Co Kg Kühlanordnung für einen Motor
JP2010206993A (ja) * 2009-03-04 2010-09-16 Daikin Ind Ltd 電動機
CN101924414A (zh) * 2010-08-06 2010-12-22 永济新时速电机电器有限责任公司 刀盘电机和盾构机
DE102010025650A1 (de) * 2009-07-03 2011-01-05 Fanuc Ltd. Motorkühlvorrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159740A (en) * 1977-08-29 1979-07-03 Amf Incorporated Direct expansion jacket for horizontal dough mixers
DE19950660A1 (de) 1999-04-19 2000-10-26 Dietz Motoren Gmbh & Co Kg Kühlanordnung für einen Motor
JP2010206993A (ja) * 2009-03-04 2010-09-16 Daikin Ind Ltd 電動機
DE102010025650A1 (de) * 2009-07-03 2011-01-05 Fanuc Ltd. Motorkühlvorrichtung
CN101924414A (zh) * 2010-08-06 2010-12-22 永济新时速电机电器有限责任公司 刀盘电机和盾构机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108667217A (zh) * 2018-05-11 2018-10-16 湘潭大学 一种轴向单槽双l型并流道反向流永磁同步电机冷却系统
CN110912321A (zh) * 2018-09-17 2020-03-24 舍弗勒技术股份两合公司 用于冷却装置的冷却水套及用于电机的冷却装置

Also Published As

Publication number Publication date
DE102011076529A1 (de) 2012-11-29

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