WO2017207205A1 - Agencement de conduits de fluide pour dispositif de refroidissement, en particulier pour chemise de refroidissement d'une machine électrique - Google Patents

Agencement de conduits de fluide pour dispositif de refroidissement, en particulier pour chemise de refroidissement d'une machine électrique Download PDF

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Publication number
WO2017207205A1
WO2017207205A1 PCT/EP2017/060635 EP2017060635W WO2017207205A1 WO 2017207205 A1 WO2017207205 A1 WO 2017207205A1 EP 2017060635 W EP2017060635 W EP 2017060635W WO 2017207205 A1 WO2017207205 A1 WO 2017207205A1
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WO
WIPO (PCT)
Prior art keywords
fluid
channel
flow
bridge
duct
Prior art date
Application number
PCT/EP2017/060635
Other languages
German (de)
English (en)
Inventor
Philipp NEIDHARDT
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 WO2017207205A1 publication Critical patent/WO2017207205A1/fr

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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
    • 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

  • Fluidkanalanordnunq for a cooling device, in particular for a cooling jacket of an electrical machine
  • the invention relates to a fluid channel arrangement for a cooling device, in particular for a cooling jacket of an electrical machine according to the preamble of patent claim 1, as described for example in DE 199 54 434 A1.
  • Electrical machine and other electronic components such as a power electronics for controlling an electric machine have to dissipate heat losses usually a cooling device, wherein a cooling medium flowing in a cooling channel absorbs the heat loss and transported away to a heat exchanger.
  • a cooling device wherein a cooling medium flowing in a cooling channel absorbs the heat loss and transported away to a heat exchanger.
  • it is an object to represent a spatially uniform cooling with a temperature distribution that is as homogeneous as possible over the entire circumference of a stator.
  • a short-circuit channel ie a bypass
  • the object of the invention is to present a generic fluid channel arrangement for a cooling device, in particular for a cooling jacket of an electrical machine, which allows a more uniform temperature distribution when flowing through a coolant in the distance region of the fluid connections.
  • the object of the invention is therefore initially to provide a fluid channel arrangement for a cooling device, in particular for a cooling jacket of an electrical machine with two fluid connections, which form a fluid inlet and a fluid outlet and which are spatially adjacent to one another while forming a mutual distance region.
  • a bridge channel extending at least essentially within the spacing region between the fluid connections is provided, wherein in the bridge channel a dividing wall is introduced, which prevents a flow connection between the fluid connections.
  • a main channel extends substantially outside the aforementioned distance region, which thus forms a major part of a heat exchange zone of the cooling device.
  • the entire fluid channel arrangement that is to say the distance region present between the fluid connections or the channel sections existing between a fluid connection and the dividing wall, is acted upon directly up to the dividing wall by a fluid flow of a coolant, so that fluid channel sections with "stationary cooling fluid" substantially It is also possible to avoid the formation of a bypass between the fluid connections and an undesired fluid mixing zone which occurs as a result.
  • the fluid connections can be spaced apart from one another within certain limits as hitherto by virtue of the proposed fluid channel arrangement Even further, gas accumulations and deposits in the mentioned distance region of the fluid channel arrangement can now be safely avoided.
  • the fluid guiding means may in principle be arranged in the region of the fluid inlet or also in the region of the fluid outlet.
  • the proposed solution is generally independent of a flow direction.
  • the partition wall formed in the bridge channel can be provided at any desired position, for example displaced approximately centrally or toward one of the fluid connections.
  • the dividing wall may be arranged in the bridge channel in the region of the fluid outlet. In this way, a portion of the fluid flow entering the fluid channel arrangement with a comparatively low temperature via the fluid inlet, ie, the bridge channel flow, can initially also flow through the essentially entire bridge channel and effectively cool the substantially entire distance region between the fluid connections.
  • the fluid guiding means provided in the fluid channel arrangement can in principle be represented in different ways and in the process include.
  • a channel intermediate wall drawn in the region of a fluid connection and extending at least partially in the direction of the respective other fluid connection can be provided, which ends at a distance in front of the partition wall or has a passage for diverting the flow direction of the bridge channel flow.
  • the fluid guiding means may also comprise a throttle which can be arranged in particular in connection with the abovementioned channel intermediate wall between the fluid connection and the main channel and through which the main channel partial flow can flow. Due to the throttle, the line cross section is narrowed and thus generates a local flow resistance.
  • the effect of the Fluidleitstoffs, in particular the throttle is to generate a pressure difference, by which a fluid flow is excited in the bridge channel.
  • the fluid guiding means in particular the throttle, can be effected for example by a local narrowing of the channel wall or by a corresponding shaping of the channel intermediate wall. It is possible to form the partition wall provided between the fluid connections as a fluid-conducting means and if appropriate also to form the throttle thereon.
  • a diaphragm can also be provided.
  • the fluid guiding means may also comprise, in addition to or instead of a fixed flow resistance, a variable flow resistance, such as a variable or adjustable throttle, in order to be able to set a locally desired temperature distribution even better.
  • a variable flow resistance such as a variable or adjustable throttle
  • FIG. 1 is a schematic representation of a fluid channel arrangement formed in the region of a fluid connection Fluidleitschn.
  • FIG. 1 schematically shows a fluid channel arrangement 10 for a cooling device, not illustrated in any more detail here, which can be provided in particular for a cooling jacket of an electrical machine.
  • the fluid channel arrangement 10 has two fluid connections 12 which, depending on a flow direction of a cooling fluid, form a fluid inlet 12a and a fluid outlet 12b and which are arranged spatially adjacent to one another to form a mutual distance region 14.
  • the fluid port 12 forms the fluid inlet 12a and the fluid port 12 the fluid outlet 12b, outside of the mutual distance region 14 extends a main channel 16, which forms the largest part of a cooling jacket and thus the main part of a heat exchange zone of the cooling device.
  • a fluid channel in the distance region 14 between the fluid connections 12, where it forms a bridge channel 18.
  • a partition wall 20 is provided, which prevents a flow connection between the fluid ports 12.
  • the dividing wall 20 is provided in the bridge channel 18 in the area of the fluid outlet 12b, in particular directly at the fluid outlet 12b.
  • fluid guide means 22 in the form of a channel intermediate wall 22a are provided in the region of the fluid inlet 12a, which extends from the fluid inlet 12a in the direction of the main channel 16 and also in the bridge channel 18 in the direction of the partition wall 20.
  • the channel intermediate wall 22a thus divides the bridge channel 18 into bridge channel sections 18a, b arranged in parallel but connected in series in flow.
  • the channel baffle 22a thus divides a fluid stream 24 entering through the fluid inlet 12a into a bridge channel flow 24a and into a main channel subflow 24b.
  • the flow direction of the bridge channel flow 24a within the bridge channel 18 is deflected by the partition wall 20, whereby the bridge channel flow 24a as well as the main channel partial flow 24b can flow in the direction of the main channel 16.
  • the bridge channel flow 24b is present outside the distance range 14 or outside the extension of the channel intermediate wall 22 in the main channel 16 with the Hauptkanal- Partial flow 24b again united to the fluid flow 24, which as a Hauptkanalflu- idstrom flows through the main channel 16 to the exit from the fluid outlet 12b.

Landscapes

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

Abstract

L'invention concerne un agencement de conduits de fluide (10), destiné à un dispositif de refroidissement, comprenant deux raccords de fluide (12) qui forment une entrée de fluide (12a) et une sortie de fluide (12b) et qui sont disposés spatialement de façon adjacente l'un à l'autre de sorte qu'une région d'espacement est ménagée entre eux. L'agencement de conduits de fluide (10) comprend un conduit de pontage (18) qui s'étend au moins sensiblement à l'intérieur de la région d'espacement et dans lequel est prévue une paroi de séparation qui empêche une liaison d'écoulement entre les raccords de fluide (16), et comprend en outre un conduit principal (16) qui s'étend sensiblement à l'extérieur de la région d'espacement (14). Selon l'invention, il est prévu dans la région de l'un des raccords de fluide des moyens de guidage de fluide qui divisent un flux de fluide (24), circulant à travers ce raccord de fluide (12) et le conduit principal (16), en un flux de conduit de pontage (24a) et un flux de conduit principal (24b). Le sens d'écoulement du courant de conduit de pontage (24a) à l'intérieur du conduit de pontage (18) est dévié par la paroi de séparation (20) et le flux de conduit de pontage (24a) est combiné au flux partiel de conduit principal (24b), en fonction du sens d'écoulement dans la région du raccord de fluide (12) ou dans le conduit principal (16), pour reformer le flux de fluide (24).
PCT/EP2017/060635 2016-06-02 2017-05-04 Agencement de conduits de fluide pour dispositif de refroidissement, en particulier pour chemise de refroidissement d'une machine électrique WO2017207205A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016209644.3A DE102016209644A1 (de) 2016-06-02 2016-06-02 Fluidkanalanordnung für eine Kühleinrichtung, insbesondere für einen Kühlmantel einer elektrischen Maschine
DE102016209644.3 2016-06-02

Publications (1)

Publication Number Publication Date
WO2017207205A1 true WO2017207205A1 (fr) 2017-12-07

Family

ID=58668908

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/060635 WO2017207205A1 (fr) 2016-06-02 2017-05-04 Agencement de conduits de fluide pour dispositif de refroidissement, en particulier pour chemise de refroidissement d'une machine électrique

Country Status (2)

Country Link
DE (1) DE102016209644A1 (fr)
WO (1) WO2017207205A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954434A1 (de) 1999-11-11 2001-05-17 Mannesmann Sachs Ag Elektrische Maschine mit einer Kühleinrichtung
DE102005044834A1 (de) * 2005-09-20 2007-03-22 Siemens Ag Elektrische Maschine
WO2012066069A2 (fr) * 2010-11-18 2012-05-24 Avl List Gmbh Moteur électrique
DE102013222697A1 (de) * 2013-11-08 2015-05-13 Em-Motive Gmbh Elektrische Maschine mit in ein Gehäuse integriertem Kühlkanal
DE102014204816A1 (de) * 2014-03-14 2015-09-17 Zf Friedrichshafen Ag Elektrische Maschine mit einem Kühlelement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954434A1 (de) 1999-11-11 2001-05-17 Mannesmann Sachs Ag Elektrische Maschine mit einer Kühleinrichtung
DE102005044834A1 (de) * 2005-09-20 2007-03-22 Siemens Ag Elektrische Maschine
WO2012066069A2 (fr) * 2010-11-18 2012-05-24 Avl List Gmbh Moteur électrique
DE102013222697A1 (de) * 2013-11-08 2015-05-13 Em-Motive Gmbh Elektrische Maschine mit in ein Gehäuse integriertem Kühlkanal
DE102014204816A1 (de) * 2014-03-14 2015-09-17 Zf Friedrichshafen Ag Elektrische Maschine mit einem Kühlelement

Also Published As

Publication number Publication date
DE102016209644A1 (de) 2017-12-07

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