WO2018041424A1 - Système de thermorégulation d'un fluide - Google Patents

Système de thermorégulation d'un fluide Download PDF

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Publication number
WO2018041424A1
WO2018041424A1 PCT/EP2017/061705 EP2017061705W WO2018041424A1 WO 2018041424 A1 WO2018041424 A1 WO 2018041424A1 EP 2017061705 W EP2017061705 W EP 2017061705W WO 2018041424 A1 WO2018041424 A1 WO 2018041424A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
heat exchange
exchange surface
arrangement
return
Prior art date
Application number
PCT/EP2017/061705
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
Priority to EP17724000.9A priority Critical patent/EP3507561A1/fr
Publication of WO2018041424A1 publication Critical patent/WO2018041424A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/027—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes
    • F28F9/0275—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits in the form of distribution pipes with multiple branch pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D11/00—Heat-exchange apparatus employing moving conduits
    • F28D11/02—Heat-exchange apparatus employing moving conduits the movement being rotary, e.g. performed by a drum or roller
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F5/00—Elements specially adapted for movement
    • F28F5/02—Rotary drums or rollers
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium

Definitions

  • the invention relates to an arrangement for fluid temperature control according to the preamble of patent claim 1.
  • the invention in an arrangement according to the preamble of the independent claim has the fundamental object to achieve a more effective temperature control of a heat exchange surface and thus one of these thermally associated object, in particular, a heat transfer coefficient of the arrangement should be increased.
  • the above object is achieved by means of a generic arrangement with the features specified in the independent claim.
  • a fluid temperature control arrangement which comprises first a heat exchange surface, a downcomer arrangement for supplying a flow of fluid to the heat exchange surface with a main passage and a return passage arrangement for discharging a fluid return flow from the heat exchange surface with a return passage.
  • the Hinkanalan the Hinkanalan extract several Zuleitabitese, which are in fluid communication with the Hinhauptkanal and through which the fluid flow is directed in a plurality of spatially separate fluid partial inflows at an angle to the heat exchange surface.
  • the return channel arrangement has objectively formed discharge sections in an interaction region with the heat exchange surface. These diverting sections are provided for guiding individual fluid partial outflows discharged from the heat exchange surface, which are thereby guided, in particular spatially, separately from the partial fluid inflows.
  • the invention is based on the finding that an effective heat transfer from the considered heat exchange surface to a fluid is significantly dependent on an unimpeded spread of the partial fluid inflows in the direction of the heat exchange surface.
  • the individual partial fluid inflows in their propagation in Direction of the heat exchange surface within a gap space very disturbed by a transverse to this and these individual flow paths crossing fluid flow.
  • these partial fluid inflows undergo a change in the flow direction and are thereby deflected axially in the direction of an intersecting fluid return flow and approximately parallel to the heat exchange surface.
  • the heat transfer coefficient is comparatively low.
  • the pressure loss undesirably increases due to the constant mixing of the axial return flow with the partial fluid inflows outside this boundary layer.
  • temperature is to be understood as meaning both heating and cooling, the proposed arrangement being equally suitable for both possibilities.
  • a heat exchange surface may be an immediate surface of an object to be tempered or a surface which is in contact with it at least in the heat exchange contact, for example a surface or mounting surface of a cooling or heating body acting as a heat exchange surface with which an object to be tempered may be in direct or for example can also be located on intermediate layers in indirect plant for heat exchange.
  • the heat exchange surface may be an inner or an outer surface and flat or curved in shape, in particular a cylindrical inner or outer surface.
  • the proposed arrangement is basically independent of the type and shape of the heat exchange surface.
  • the Zuleitabitese are not parallel, but at an angle to the considered Heat exchange surface out. Otherwise, the Zuleitabitese can form any arrangement and form, for example, a linear, that is cell-shaped arrangement or a two-dimensional arrangement in the form of an array or a matrix. In the case of a cylindrical arrangement, a distribution of the supply sections in the circumferential direction may additionally be present.
  • the flow direction in the return duct arrangement may correspond to the flow direction of the main duct arrangement, be opposite to it or extend in another direction.
  • fluids and gases are considered as a fluid, it being possible with advantage to use water, oil or other known agents as the medium.
  • a supply section may be assigned at least one discharge section, which adjoins the supply section in terms of flow. That is, a partial fluid flow directed toward the heat exchange surface may be conducted on its return path from the heat exchange surface in one or more diverting sections and, correspondingly, in one or more partial fluid outflows. An interaction with further partial fluid inflows does not occur. Likewise, the partial fluid outflows of a plurality of partial fluid inflows may be conducted separately at least over a certain distance.
  • the return duct arrangement can have at least one return duct, which is in fluid communication with the rear main duct or forms it and in which a plurality of discharge ducts can lead from different partial fluid outflows.
  • a return channel in which a reunification of a plurality of partial fluid inflows having flowed through different supply sections takes place with formation of a return channel flow.
  • a plurality of return channels may be provided, which together open into a fluid return flow in a return main channel.
  • a fluid guide element is proposed with an associated heat exchange surface, wherein the Zuleitabroughe the Hinkanalan extract are formed in the fluid guide.
  • the discharge sections and the at least one return channel are advantageously limited by the fluid guide element and / or by the heat exchange surface.
  • corresponding structures can be provided either on the considered heat exchange surface and / or on the fluid guide element, so that a further heat exchange with the fluid can take place when flowing through the discharge sections and the at least one return channel.
  • the fluid guide element can favorably consist of a metallic material, for example a copper material, with a high thermal conductivity and can be in abutting contact with the considered heat exchange surface at least regionally, ie with individual surface regions on which no fluid channels are provided. This can be done by means of heat conduction, a direct transition of a loss of heat in the fluid guide and from there into a fluid.
  • a metallic material for example a copper material
  • the previously explained arrangement for fluid cooling of a rotor of an electric machine can be designed with particular advantage, wherein the rotor has a hollow rotor shaft with an internal heat exchange surface to be cooled.
  • the fluid guide can be designed as a hollow cylindrical insert part, in particular as an inner shaft, wherein the Hinnchkanal is formed within and preferably centrally within the insert part and extending axially therein. As the axial extent increases, an effective flow cross-section in the direction of flow of the fluid can be designed to decrease in order to maintain the pressure conditions of the fluid inflow.
  • the supply sections can preferably be used as radial from radially inward to radially outward. be executed al commentary. Still further, at least one return channel and discharge sections can also run on the outer surface of the insert part.
  • FIG. 1 shows a schematic arrangement for fluid temperature control with a Fluidlei- telement and an associated heat exchange surface.
  • Fig. 2 is a schematic representation of fluid flows occurring on the arrangement of Fig. 1;
  • Fig. 3 is a detailed view of the Fluidleitelements of Fig. 1;
  • FIG. 4 is an axial sectional view of a rotor of an electric machine with an arrangement for internal shaft cooling
  • FIG. 6a shows a radial section of the fluid guide element of FIG. 4 with supply and discharge sections arranged thereon for a fluid
  • 6b shows a further radial section of the fluid guide element in one of
  • Fig. 5a deviating cutting position
  • FIG. 7 is a perspective view of the Fluidleitelements of Fig. 4th
  • FIG. 1 shows an arrangement 10a for fluid temperature control, which is designed overall as a tempering body 12, that is to say as a cooling and / or heating body, and which comprises a fluid-conducting element 50 with an attached cover element 14.
  • a flat surface 14a of the cover element 14 directed toward the fluid-conducting element 50 forms a heat exchange surface 16.
  • the fluid guide element 50 and in particular the cover element 14 are here made of a copper material and are at least partially in direct mutual contact.
  • the cover element 14 can be in contact with a free surface 14b with an object to be tempered and thus in heat exchange contact or even form the object to be tempered.
  • a heat flow 18 occurs in the direction of the fluid-conducting element 50 through the cover element 14 and thus through the heat exchange surface 16.
  • the fluid guiding element 50 is designed to convey a fluid, in particular a cooling fluid, introduced into the arrangement 10a to the surface 14a or the heat exchange surface 16 and to absorb a quantity of heat therefrom, thus removing the heat exchange surface 16 and a optionally with it to cool thermally connected object or to temper.
  • the assembly 10b initially includes a downcomer assembly 20 having a main passage 22 in which a fluid feed 122 is directed to the heat exchange surface 16.
  • the heat exchange surface 16 to be cooled is shown in FIG. 2 only schematically simplified as a dashed line.
  • the assembly 10b comprises a return channel arrangement 40 with a return main channel 42 for discharging a fluid return flow 142 from the heat exchange surface 16.
  • the down channel arrangement 20 has a plurality of feed sections 24, which branch off from the main channel 22 and are in fluid communication therewith and through which the fluid feed 122 is directed at a plurality of spatially separate partial fluid inflows 124 at an angle to the heat exchange surface 16 .
  • the Zuleitabitese 24 form in the scheme shown a linear, that is a cell-shaped arrangement.
  • the supply sections 24 are designed as stagnation point flow channels, wherein the partial fluid inflows 124 routed therein are directed essentially perpendicular to the heat exchange surface 16 and, ideally, also impinge perpendicular thereto.
  • the individual partial fluid inflows 124 thus form a plurality of accumulation flows, as a result of which a particularly high value for the heat transfer coefficient can be set for the removal of heat and the heat exchange surface 16 and a thermally connected object can thus be effectively cooled.
  • the return duct arrangement 40 has, in an interaction region with the heat exchange surface 16 considered here, a plurality of diverting sections 44 which are designed and arranged such that partial fluid outflows 144 discharged from the heat exchange surface 16 are conducted spatially separate from the partial fluid inflows 124 become.
  • the partial fluid outflows 144 are conducted at an angle ⁇ , ⁇ to the partial fluid inflows 124, so that these fluid flows do not intersect in their propagation and can not interfere with one another.
  • a supply section 24 is assigned exactly one discharge section 44, which adjoins the supply section 24 in terms of flow.
  • the existing there Ableitabitese 44 are arranged in two groups I, II.
  • the discharge sections 44a form a first group and open into a first return channel 46a of the return channel arrangement 40, while the discharge sections 44b form a second group and open into a second return channel 46b.
  • Both return channels 46 are in fluid communication with the return main channel 42.
  • this has the approximately cuboidal fluid-conducting element 50 shown in detail in FIG. 3, which rests in sections on the heat exchange surface 16 with a contact surface 51 and is in direct heat transfer there.
  • the main passage 22 is formed by a space region on the outside of the heat exchange surface 16 facing away from the surface or provided there.
  • the supply sections 24 of the down channel arrangement 20 are arranged here as a two-dimensional matrix in the form of an array and extend from the main channel 22 in a thickness direction through the fluid guide element 50 to emerge approximately perpendicularly from the contact surface 51 or the exit surface in the direction of the heat exchange surface 16 to be tempered ,
  • first grooves 52 are introduced in the contact surface 51, which intersect with their groove bottom in each case the outlet openings of the Zuleitabroughe 24.
  • a plurality of parallel second grooves 54 are introduced, which intersect the first grooves 52 and which are also adjacent to and arranged parallel to a row of the array of Zuleitabitese 24.
  • the first grooves 52 are thus each separated into a plurality of sections 521, wherein a Zuleitabites 24 is assigned in each case a groove portion 521, which in terms of flow two opposite Ableitabroughe 44a, b for guiding two fluid partial outlets 144a, b forms.
  • the Zuleitabroughe 24 open respectively in the second grooves 54, wherein the number of second grooves 54 is noticeably smaller than the number of Zuleitabroughe 24th
  • the second grooves 54 are made larger in cross section than the first grooves 52 and thus form individual return channels 46, the return channel flows 146 open in a in Fig. 1 only schematically illustrated return main channel 42.
  • the corresponding channel cross-sections in the forward and rearward channel arrangement 20, 40 are dimensioned such that a supplied fluid flow 122 is to be cooled from the one to be cooled.
  • the heat exchange surface 16 can be discharged again as a fluid backflow 142 without the formation of a congestion.
  • the dimensioning of the entire channel arrangement is subject to the mass flow maintenance of the fluid.
  • the discharge sections 44 and the return channels 46 are bounded on one side both by the fluid guide element 50 and by the heat exchange surface 16 to be tempered.
  • the cover member 14 may be applied to the remaining between the grooves 52, 54 ridges 53, for example by soldering, welding, bonding or the like.
  • Such a sandwich construction with a comparatively thin-walled cover element 14 in contact with an object to be tempered results in only a small heat transfer resistance between the object and the fluid, so that, despite this intermediate layer, a very effective heat exchange is possible.
  • a temperature control body 12 with a fluid guide element 50 and a cover element 14 can alternatively also be produced monolithically.
  • a basically constructed and operating according to the above-described embodiment arrangement 10c is presented for fluid cooling of a rotor of an electric machine.
  • Fig. 4 shows this designed as an asynchronous electrical machine 60 with a cylindrical stator 64 which carries a stator winding 66 and with a rotatably mounted in a central cavity about an axis A rotor 62, which carries a cage winding.
  • the rotor 62 has a hollow rotor shaft 67 with an inner surface 67a to be cooled by means of fluid, which forms the heat exchange surface 16 in this case.
  • the fluid guide element 50 is in this case according to FIGS. 5-7 designed as a hollow cylindrical insert 68, in particular as an inner shaft of a copper material and inserted into the hollow shaft 67, that this comparable to the previously discussed embodiment at least in sections on the hollow shaft 67th is applied, thereby also allowing a direct heat transfer.
  • the insert member 68 has a multi-diameter stepped central recess 70 in the form of a blind hole which forms the main passage 22 for guiding a low-temperature fluid flowing into the assembly. From this Hinnchkanal 22 go from a plurality of radially outwardly extending Zuleitabitese 24, which open at a cylindrical Au chipposf laugh the insert 68.
  • the Zuleitabitese 24 are designed as radial bores and are thus directed perpendicular to the inner peripheral surface 67a of the rotor shaft 67 to be cooled, whereby the guided in these Zuleitabitesen 24 individual fluid partial flows 124 meet as Stauddlingströme on the inner heat exchange surface 16 of the rotor shaft 67.
  • Fig. 3 shows a radial section axially outside of Zuleitabitese 24, wherein the insert member 68 abuts with portions or webs 53 directly to the hollow shaft 67 and is in heat transfer contact with this.
  • Fig. 7 shows a radial section axially outside of Zuleitabitese 24, wherein the insert member 68 abuts with portions or webs 53 directly to the hollow shaft 67 and is in heat transfer contact with this.
  • the return channel flows 146 guided in the return channels 46 in turn combine in the return main channel 42 to a fluid return flow 142 having a higher temperature compared to the fluid flow 122, which initially proceeds from the axial end region of the insert 68 in the rotor shaft 67 and then into further fluid lines (not shown here) goes to a heat exchanger.
  • the explained fluid guide element 50 in the form of the insert part 68 can be manufactured as a cylindrical solid part.
  • a flat semi-finished product which after generating the explained Channel structure is bent around and thus brought into a cylindrical shape.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

L'invention concerne un ensemble de thermorégulation, lequel comporte une surface d'échange de chaleur (16), un système de canal aller (20) destiné à amener un courant d'amenée de fluide (122) à la surface d'échange de chaleur (16) et pourvu d'un canal principal aller (22), et un système de canal retour (40) destiné à évacuer un courant de retour de fluide (142) de la surface d'échange de chaleur (16) et pourvu d'un canal principal de retour (42). Le système de canal aller (20) comprend plusieurs sections d'alimentation (24), lesquelles sont en liaison fluidique avec le canal principal aller (22) et par l'intermédiaire desquelles le courant de fluide est dirigé sur la surface d'échange de chaleur (16) à un angle en plusieurs courants d'amenée de fluide (124) séparés dans l'espace. Le système se caractérise par le fait que le système de canal de retour (40) présente, dans une zone d'interaction avec la surface d'échange de chaleur (16), des sections de déviation (44), lesquelles sont conçues et agencées pour que les courants d'évacuation partiels de fluide (144) évacués de la surface d'échange de chaleur (16) soient guidés dans lesdites sections de manière séparée dans l'espace des courants d'amenée partiels de fluide (124).
PCT/EP2017/061705 2016-08-30 2017-05-16 Système de thermorégulation d'un fluide WO2018041424A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP17724000.9A EP3507561A1 (fr) 2016-08-30 2017-05-16 Système de thermorégulation d'un fluide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016216245.4A DE102016216245A1 (de) 2016-08-30 2016-08-30 Anordnung zur Fluidtemperierung
DE102016216245.4 2016-08-30

Publications (1)

Publication Number Publication Date
WO2018041424A1 true WO2018041424A1 (fr) 2018-03-08

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PCT/EP2017/061705 WO2018041424A1 (fr) 2016-08-30 2017-05-16 Système de thermorégulation d'un fluide

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Country Link
EP (1) EP3507561A1 (fr)
DE (1) DE102016216245A1 (fr)
WO (1) WO2018041424A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113883929B (zh) * 2021-09-28 2023-10-17 浙江搏克换热科技有限公司 一种智能温度监控的换热设备
US20240093952A1 (en) * 2022-09-15 2024-03-21 Hamilton Sundstrand Corporation Crossflow heat exchanger with stacked distribution tubes

Citations (10)

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US2936158A (en) * 1958-12-24 1960-05-10 Kentile Inc Heat exchange rolls
US3629628A (en) * 1970-07-06 1971-12-21 Gen Motors Corp Cooling arrangement for a squirrel cage rotor assembly
DE2452734A1 (de) * 1973-11-08 1975-05-15 Morrison Machine Co Heizwalze fuer die gleichfoermige erwaermung von material
JPS54115708A (en) * 1978-03-01 1979-09-08 Hitachi Ltd Revolving electrical machinery
US5016090A (en) * 1990-03-21 1991-05-14 International Business Machines Corporation Cross-hatch flow distribution and applications thereof
DE10208443A1 (de) * 2002-01-11 2003-07-31 Kvaerner Eureka As Tranby Verfahren bei der Erwärmung einer Mantelarbeitsfläche auf einer rotierenden Walze und rotierbare Walze zum Erwärmen eines Bahnenmaterials
DE102011007605A1 (de) * 2010-05-20 2011-11-24 Ford Global Technologies, Llc Ein Ölversorgungssystem für einen Motor
US20120104884A1 (en) * 2010-11-01 2012-05-03 Jon Wagner Electric motor and method of cooling
EP2541737A2 (fr) 2011-06-29 2013-01-02 General Electric Company Machine électrique
US20160233744A1 (en) * 2015-02-09 2016-08-11 Toyota Jidosha Kabushiki Kaisha Rotary electric machine

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US7414843B2 (en) 2004-03-10 2008-08-19 Intel Corporation Method and apparatus for a layered thermal management arrangement
US7462962B2 (en) 2005-06-13 2008-12-09 General Electric Company Cooling system for an electrical machine with center rotor cooling dusts
DE102010006277A1 (de) 2010-01-25 2011-07-28 Joma-Polytec GmbH, 72411 Wärmetauscher, insbesondere zur Vorwärmung von Verbrennungsluft von Warmwasserheizkesseln
US8944155B2 (en) 2010-07-15 2015-02-03 Dana Canada Corporation Annular axial flow ribbed heat exchanger
US8919746B2 (en) 2011-01-13 2014-12-30 Dana Canada Corporation Humidifier for fuel cell systems
US20140231057A1 (en) 2013-02-21 2014-08-21 Vacuum Process Engineering, Inc. Heat exchanger incorporating integral flow directors
EP2860852A1 (fr) 2013-10-14 2015-04-15 Siemens Aktiengesellschaft Dispositif de déviation d'au moins une partie d'un fluide de refroidissement s'écoulant dans un espace intercalaire disposé entre un rotor et un stator d'une machine électrique rotative

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936158A (en) * 1958-12-24 1960-05-10 Kentile Inc Heat exchange rolls
US3629628A (en) * 1970-07-06 1971-12-21 Gen Motors Corp Cooling arrangement for a squirrel cage rotor assembly
DE2452734A1 (de) * 1973-11-08 1975-05-15 Morrison Machine Co Heizwalze fuer die gleichfoermige erwaermung von material
JPS54115708A (en) * 1978-03-01 1979-09-08 Hitachi Ltd Revolving electrical machinery
US5016090A (en) * 1990-03-21 1991-05-14 International Business Machines Corporation Cross-hatch flow distribution and applications thereof
DE10208443A1 (de) * 2002-01-11 2003-07-31 Kvaerner Eureka As Tranby Verfahren bei der Erwärmung einer Mantelarbeitsfläche auf einer rotierenden Walze und rotierbare Walze zum Erwärmen eines Bahnenmaterials
DE102011007605A1 (de) * 2010-05-20 2011-11-24 Ford Global Technologies, Llc Ein Ölversorgungssystem für einen Motor
US20120104884A1 (en) * 2010-11-01 2012-05-03 Jon Wagner Electric motor and method of cooling
EP2541737A2 (fr) 2011-06-29 2013-01-02 General Electric Company Machine électrique
US20160233744A1 (en) * 2015-02-09 2016-08-11 Toyota Jidosha Kabushiki Kaisha Rotary electric machine

Also Published As

Publication number Publication date
DE102016216245A1 (de) 2018-03-01
EP3507561A1 (fr) 2019-07-10

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