EP2203969A2 - Enveloppe refrigerante destinee notamment a des machines electriques et son procede de realisation - Google Patents

Enveloppe refrigerante destinee notamment a des machines electriques et son procede de realisation

Info

Publication number
EP2203969A2
EP2203969A2 EP08842055A EP08842055A EP2203969A2 EP 2203969 A2 EP2203969 A2 EP 2203969A2 EP 08842055 A EP08842055 A EP 08842055A EP 08842055 A EP08842055 A EP 08842055A EP 2203969 A2 EP2203969 A2 EP 2203969A2
Authority
EP
European Patent Office
Prior art keywords
wall
cooling jacket
heat exchanger
cooling
joints
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Withdrawn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
EP08842055A
Other languages
German (de)
English (en)
Inventor
Joachim Braun
Peter Lemke
Günther SONNAUER
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.)
Baumueller Nuernberg GmbH
Original Assignee
Baumueller Nuernberg 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 Baumueller Nuernberg GmbH filed Critical Baumueller Nuernberg GmbH
Priority to EP08842055A priority Critical patent/EP2203969A2/fr
Publication of EP2203969A2 publication Critical patent/EP2203969A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/04—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal
    • B21D53/045—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of sheet metal by inflating partially united plates
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/14—Casings; Enclosures; Supports
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making
    • Y10T29/49364—Tube joined to flat sheet longitudinally, i.e., tube sheet

Definitions

  • Cooling jacket in particular for electrical machines, and production method therefor
  • the invention relates to a cooling jacket and / or heat exchanger, which for investment in cooling objects solid shape (solid products) such.
  • solid shape solid products
  • the cooling jacket / heat exchanger has an inner and outer wall, which define a flow cavity between them. This is provided with inlet and outlet means for cooling medium and with guide means for forming and / or limiting at least one flow path for the cooling medium, wherein the flow path extends between the inner and outer walls of the inlet means to the outlet means.
  • the inner wall has a smooth or largely smoothed outside, which is associated with the solid product or object to be cooled for full investment in it.
  • the outer wall of the cooling jacket has a smooth upper or outer surface for full contact with objects to be cooled solid shape (solid products).
  • Housing for units of solid design which are interspersed by cooling coils or cooling channels can be finished only with great effort from stainless chromium-nickel steel.
  • the production of the housing is expensive, and the solid state units, such as electric motors must be shrunk into such housing.
  • Inner is included, for example, from the manufacturer "PHASE
  • Cooling channels also helical.
  • An outer housing jacket covers these cooling channels to the outside.
  • US-A-3 075 103 describes a fluid-flow cooling ring for sealed electric motors.
  • the stator is covered by a pressure vessel.
  • a structurally integrated heat exchanger is formed with parallel grooves, which are incorporated in the inner surface of the pressure vessel.
  • the open side of the grooves is covered by a steel cylinder concentric with the motor shaft.
  • At its radially inwardly facing outside are cooling copper windings, which are in thermal contact with the stator windings.
  • the radially inwardly facing surface of the cylinder inner shell is formed evenly circular cylindrical.
  • Pressure vessel an outer shell with a smooth surface.
  • US-A-30 09 072 describes fluid cooled motors which are surrounded by a cooling jacket. The aim is to produce as intense an intense thermal contact between the electric sheet of the motor and / or its housing and the cooling jacket, with a compact
  • groove channels are formed in the stator or in the motor shaft or in the rotor and / or in a surrounding, outer housing shell.
  • a sandwich arrangement with two concentric layers or layers is inserted between the stator / rotor electrical steel on the one hand and the outer housing jacket on the other hand.
  • the sandwich arrangement is like this then between the outer housing shell on the one hand and the electric sheet of the engine on the other.
  • a pressure medium is blown in between the two layers of the sandwich arrangement, whereby both sandwich layers are pressed against the respective surfaces of the motor electric sheet and the surrounding, outer casing shell.
  • the groove channels incorporated into the electrical sheet and / or the inner wall of the outer casing shell press and form onto the respective layer or layer of the sandwich arrangement. This creates passages for cooling fluid between the two layers of the now expanded sandwich assembly.
  • WO 00/54 991 describes an arrangement with a flow-through cover and an electric wheel motor within a wheel hub, which carries a tire. Through the middle of the electric wheel cooling air is passed and directed through the cover. A cover ring is connected to the wheel motor edge by means of a clamping element.
  • the invention is based on the object, in a double-walled cooling jacket of the generic type
  • the outer jacket of the outer wall extends, for example, with respect to a ground plane or a
  • the advantage is achieved to be able to cool caseless or vollgeblmü stators without producing a supporting housing or
  • the cooling jacket does not constitute a mechanically supporting component of the engine construction, a complete separation of functions between mechanical support structure and cooling is provided.
  • the wall thickness of the cooling jacket or its inner and outer walls can be selected to be very thin on the one hand which makes the use of high-quality materials such as stainless chrome-nickel steel economical. In particular, when using this material can be appropriately realize thicknesses of 0.3 -2.0 mm, for example, 0.8 mm for the inner and outer walls.
  • liquid cooling is not needed, the entire cooling system can be eliminated by simply omitting or removing the cooling jacket.
  • Pressing on a relieving of forming pressure has occurred - is specifically avoided according to the invention in that the formation or inflation of the channel structure takes place on a separate device.
  • the resulting, pillow-like structure is stretched only after relief of forming pressure on the object to be cooled or otherwise permanently pressed to this. This ensures direct contact of the wall of the channel system of the cooling jacket with the object to be cooled.
  • joints and / or sections with staples or welding or soldering can be produced.
  • the stapling or welding is advantageous insofar as can be used to welding robots, which are used for mounting the
  • Welding or stitching points can be programmed in advance accordingly. This programming can for example be made such that an arrangement of the joints and / or joining sections results, resulting in meandering flow paths of the cooling medium, possibly with turbulence result. Furthermore, results on the
  • the advantageous embodiment that the wells and / or flow guide are structurally simple realized with the joints and / or joining sections.
  • the cooling jacket with its inner wall can fit snugly against the solid object to be cooled, a shape adaptation to the solid object is necessary, which can be accomplished, for example, with a forming device.
  • Solid object to be provided on its outer surface or side with a heat transfer improving coating is provided on its outer surface or side with a heat transfer improving coating.
  • this coating consists of a viscoelastic polymer, which is applied for example to the inside of the cooling jacket and after installation of the cooling jacket small
  • Statorblech or the stator windings are used to use for the stated purpose.
  • An additional coating material for the purposes mentioned could then be omitted.
  • the potting compound for the stator or its windings or for another similar product is not fully cured, it is expedient to mount the cooling jacket within the scope of the invention. Then automatically results in a shape adaptation of the potting compound on existing bumps, clear spaces, etc. between the opposite outer sides of the cooling jacket and the product to be cooled.
  • this casting compound or the usual for electrical sheets and windings of stators impregnating resin is not yet cured, it can spread between the opposite contact surfaces of cooling jacket and product to be cooled and thus close about any existing heat transfer gaps.
  • the additional step required for the above-described invention training - applying a polymeric viscoelastic intermediate coating - can be dispensed with.
  • Unevenness on the circumference of the product to be cooled, such as electric motor and / or on the outside of the inner wall of the cooling jacket can also be filled or compensated with potting compound.
  • the cooling jacket is mounted before the above-mentioned impregnation process.
  • the impregnating resin can penetrate between the cooling object, for example the stator, and the cooling jacket.
  • the penetration can optionally be further improved by the fact that the cooling jacket in the interior of each circular weld for connecting the inner and outer metal sheet has a hole through which penetrate even on the outer surface even when soaking resin or air can escape.
  • training the elevations and depressions are curved convex or concave in the cooling jacket and / or heat exchanger.
  • training are the cooling jacket and / or heat exchanger, the joints and / or - sections (10) with stitching or welding, soldering, gluing,
  • training the joints and / or joining sections are arranged in the region of the recesses of the respective outer side of the inner or outer wall of the cooling jacket and / or heat exchanger.
  • training the recesses and / or flow-conducting means are realized with the joints and / or joining sections in the cooling jacket and / or heat exchanger.
  • cooling jacket and / or heat exchanger which has a cylindrical and / or elongated and / or rotationally symmetric basic shape - seen in alignment parallel to or according to the cylinder, longitudinal or symmetry axis - on the outer surface or side of the inner or outer wall elevations with depressions, wherein each elevation or depression on each side is limited by out-of-flight depressions or elevations.
  • training the flow-guiding means are realized with the joints and / or joining sections and / or connection points or sections between the inner and outer walls of the cooling jacket and / or heat exchanger.
  • Flow paths of the cooling medium meandering and / or over
  • cooling jacket and / or heat exchanger comprising a cylindrical and / or elongated and / or rotationally symmetrical
  • Outer wall alternately offset more towards one edge and more towards an opposite edge.
  • cooling jacket and / or heat exchanger having a cylindrical and / or elongated and / or rotationally symmetric basic shape in a circumferential direction about the cylinder, longitudinal and / or symmetry axis and / or in a direction parallel to Cylinder, longitudinal and / or
  • the joints and / or Joining sections arranged with regular structure and / or uniform distances from each other.
  • training are the cooling jacket and / or heat exchanger mounting and / or fixing means on or in the outer and / or inner wall for attachment to a
  • cooling jacket and / or heat exchanger comprising a hollow cylindrical basic shape, wherein the cylinder circumferential skirt has an axially parallel butt seam or joint, which by circumferentially opposite edges of the inner and
  • outside wall is formed, the opposite edges by spring clips, claw springs or other elastic clamping means and / or welds held together or directly opposite.
  • the outer or inner wall are formed with a smooth or largely smoothed outside for full investment in the solid state product.
  • Sheet metal sandwich was bent after its welding to a cylinder jacket, it is provided with connections, which are preferably welded in the form of threaded flanges directly to the cover plate of the cooling jacket or sheet sandwich.
  • a second sheet metal cylinder is manufactured as a cover, which can consist of normal steel sheet for cost savings.
  • This jacket is made thick-walled than the individual sheets of the cooling jacket. For example, if the individual sheets are 0.8 millimeters thick, the thickness of the top coat is 2.5 millimeters or more.
  • This cover is provided with holes or other openings through which later the inlet / outlet connection flanges or other connection elements of the cooling jacket can protrude.
  • the cover is welded to a cylinder, depending on the development of the cylinder by means of a longitudinal or by means of a spiral seam. The cover is dimensioned in its dimensions so that in the
  • the two coaxial preassembled sheaths are pushed axially onto the cylindrical motor section to be cooled. Subsequently, the two coaxial preassembled sheaths are pushed axially onto the cylindrical motor section to be cooled. Subsequently, the two coaxial preassembled sheaths are pushed axially onto the cylindrical motor section to be cooled. Subsequently, the two coaxial preassembled sheaths are pushed axially onto the cylindrical motor section to be cooled. Subsequently, the
  • the thicker sheet metal of the covering jacket is also deformed.
  • the cover In contrast to the cooling jacket, in which the channel structure is formed, the cover is stretched mainly in the circumferential direction, depending on the internal pressure elastic or elastic-plastic. When the pressure is released, the existing, very high pretension of the covering jacket leads to a large radial force component inwards.
  • the channel pattern of the cooling jacket represents a structure of relatively high spatial frequency with proportions of material in the radial direction
  • the cooling jacket is so stiff in the radial direction with two-dimensional force introduction that a large part of the bias is retained in the cover and its radial component is effective as a contact force for the cooling jacket, to press this on the engine while reducing the heat transfer resistance.
  • Invention variant be provided before assembly with a heat transfer improving coating, which then compensates even small bumps higher spatial frequency.
  • the second variant of the invention is characterized in particular by the approach to impose the cooling jacket performing structure directly on the object to be cooled, for example stator of an electric motor, using the cover, in order in this way a cross-compression composite of the cover, cooling jacket and
  • Motor or other object to be cooled (reactor, vessel, container) produce.
  • One advantage is that the pressing under the cover creates a symmetrical cushion or channel structure. As a result, the local deformation in the region of the joints or joining sections, for example, the Sch spateinbrampf, lower.
  • the method according to the second variant of the invention in this respect is similar to the method of autofrettage, in which the targeted overstretching by means of internal pressure
  • this composite possesses an order of magnitude greater durability up to fatigue strength against pulsating and / or pulsating pressure loads, as may occur in the cooling system, when the system pressure frequently changes compared with the cooling jacket, which is separately pressed in according to the first variant of the invention and tightened around the motor.
  • the two-sided Elevations with respect to a connecting the joints or joining sections center line of the flow cavity run symmetrically.
  • the cooling jacket and / or heat exchanger is covered by a cover and / or spanned.
  • the cover with steel sheet and / or with a higher wall thickness than that of the inner or
  • the cooling jacket and / or heat exchanger is characterized by a structural integration with the cover in the manner of a
  • training protrude at the cooling jacket or heat exchanger the inlet and outlet means for cooling medium projecting through passages, which are formed in the wall of the cover shell.
  • the two heat conducting plates in the flat state or just, possibly congruent, superposed and welded at their edges or otherwise connected to form the solid composite are provided.
  • individual joints or sections are formed to form the solid composite through its outer side (s) and / or outer shell, whereby opposite inner sides of the inner and outer walls are connected to one another. It is expedient to attach the individual joints or sections by means of welding through the inner or outer wall.
  • the joints or - sections are produced by means of point, circle and / or line welding on the outside of the inner or outer wall.
  • the solid composite is adapted by means of deformation to the outer contour (s) of a product to be cooled to the cooling jacket or heat exchanger with the outside of its outer or inner wall in a whopping plant as possible to be cooled To bring the product.
  • Plate composite plastically deformed by means of a forming device or a support body whose outer contour corresponds to the product to be cooled.
  • the still flat plate composite is bent to form a cylindrical shape for forming or it is bent around a core or a support body to a cylindrical shape and connected to it opposite and / or abutting edges.
  • the plate composite can be held with the outside of its outer or inner wall by means of fixing in contact with the forming device or the support body.
  • the hydroforming is carried out by introducing a pressure medium such as compressed air or water between the inner and outer walls.
  • the use of a Forming device for forming the solid plate composite assumed, to form the solid composite on its outer side (s) and / or its outer jacket individual joints or sections are attached, whereby opposite inner sides or inner flats of the inner and outer walls are connected together.
  • hold-downs are brought into abutment with the outer surface (s) or the outer shell of the outer wall in the region of the joints or sections and / or in the region of a peripheral seam or a welded peripheral edge in order to bond with the outside of its outer - or
  • Inner wall to hold in contact with the forming device.
  • the outside of the outer or inner wall with a coating of viscoelastic polymer, casting and / or impregnating resin and / or another, the
  • the cooling jacket and / or heat exchanger is used for a impregnated with casting and / or impregnating stator of a housing-less electric machine.
  • the formed plate composite is brought with its inner wall in abutment against the stator, as long as the
  • Casting and / or impregnating resin is not completely cured.
  • the stator is soaked in the region of its outer edge or outer circumference with casting and / or impregnating resin.
  • an assembly of the cooling jacket on a solid product to be cooled is carried out prior to impregnation.
  • the inner wall is alone with their protruding elevations in heat transferring contact with the outer shell or the outer wall of the stator.
  • Cooling arrangement is a coating with preferably plastic deformable heat conduction between the outside of the inner wall and the outer contour of the product to be cooled.
  • the Verguss- or Tränkmasse is also between the outer side or the concave outer shell of the inner wall and the outer shell of the Stators or stator housing.
  • electric motors and generators preferably in caseless, vollgeblechter execution, as well as cooling or heating containers or reactors are suitable applications.
  • torque motors are suitable as cooling objects for the invention.
  • Figure 2 is a plan view of a still flat cooling jacket according to the invention
  • FIG. 3 is a perspective view of the cooling jacket already partly shaped on an inner tubular core
  • FIG. 4 is a perspective view of the slightly wavy outer jacket of the cooling jacket outer wall;
  • Figure 5 shows the over a cooled stator to be cooled by an electric motor, finished cooling jacket, and
  • Figure 6 shows the basic structure of a second variant of the cooling jacket according to the invention in a figure 1 corresponding cross-sectional view.
  • the cooling jacket according to the invention has an inner wall 1 and an outer wall 2, which are arranged concentrically or coaxially to each other and connected via individual, for example, circular welds 3 selectively or at discrete locations.
  • the outer wall 2 extends wavy or with partially outwardly radially offset contour and inwardly the outer shell of the inner wall 1 in the welds 3 tangent.
  • the outer wall 2 on its outer surface in the region of the welds 3 valleys or depressions 4, where between radially outwardly offset elevations 5 extend in convexly curved shape.
  • welds 3, 3a are arranged offset to one another in both axially parallel and in the circumferential direction, so that in the view of Figure 1 located behind a (visible) survey 5 (actually not visible and therefore only dashed lines indicated) welds 3a corresponding further
  • Form recesses 4a Overall, change on the outer surface of the outer wall 2 along a common, paraxial (perpendicular to the plane) escape recesses 4 with elevations 5a preferably uniformly. Between a convexly outwardly arched elevation 5 of the outer wall 2 and the inner wall 1 passages 6 for so far axially parallel flowing cooling fluid or cooling medium remain. The latter flows axially parallel until it along the axis-parallel escape to a (rear) connection or Welding point 3a abuts, so that the cooling fluid flow divides into a part in each of the adjacent flow passages 6, which define the (rear) weld 3a between them. As a result, the partially paraxial progressions of the coolant flow at the welds 3, 3a interruptions impressed, resulting in meandering evasive courses and associated whirls, which increases the cooling efficiency.
  • two are laid to form a double-walled cooling jacket, resulting in a later manufacturing step, the inner and outer walls 1, 2 of the cooling jacket.
  • the upper and lower parts are congruent.
  • the two sheet-metal heat conducting plates 7 are welded together around.
  • a meandering flow channel structure for the cooling medium and / or an offset, localized stapling of the sheet heat conducting plates 7 are produced by the welding process.
  • Welds 3, 3a formed. These are, for example, circular or otherwise rounded and connect in places, the two superimposed heat conducting plates 7, so that at their opposite inner flat sides corresponding joints arise. These are in the finished state of the cooling jacket
  • the elongated joining portions 10 are offset in the longitudinal direction (and thus in the finished state in the circumferential direction) alternately more towards the one edge 8 and towards the opposite other edge 8a.
  • the length of the elongated joining portions 10 is dimensioned so that they transversely transversely to the plate longitudinal direction (in the finished state according to Figure 4 paraxial) two rows I, Il or IV, V in the longitudinal direction of successive welds 3, 3a transversely prevail.
  • the elongated welding sections 10 each depart from welds of a row I, V or escape, which lie closest to the two longitudinal side edges 8, 8a. They each extend between two welds 3, which follow one another directly in their respective common row II, IV, wherein the respective row or flight II, IV one of the outermost rows I, V is closest.
  • the elongated welding sections 10 end in alignment with a central row III with welds 3a.
  • fixing holes 11 are still formed, which pass through the superposed heat conducting plates. As well as the welds
  • the fixing holes 11 are arranged at regular intervals from each other, thus for the
  • the resulting sheet sandwich is then bent to a cylinder jacket for a product to be cooled 19 and fixed in accordance with Figure 3 by means of fixing screws 12 which are complementary to the Fixierbohrungen 11 on a hollow cylindrical core 13.
  • the two transverse edges 14 of the sheet-metal sandwich are fixed to the outer jacket of the metallic core 13 by means of assembly welds 15, which can be removed again in a later production step.
  • assembly welds 15 can be removed again in a later production step.
  • the outer wall 2 visible only in FIG. 2 is penetrated by a pressure line 16, for example an inflation pipe, so that a pressurized fluid, for example compressed air, flows into the flow cavity 17 (not fully formed according to FIG. 3)
  • Heat conducting plates 7 and the inner and outer walls 1, 2 have been exposed to an internal pressure of certain height, so that this area plastically expanded or expanded to the flow cavity 17 has been.
  • the meandering structure produced by means of the abovementioned welding process is widened or opened to the flow cavity 17, so that a cooling fluid can flow in snake-like fashion between the two heat-conducting plates 7 or the inner and outer walls 1, 2 and between the welds 3, 3a.
  • the holes could be maintained with a correspondingly small diameter for a better penetration of the impregnating resin.
  • the cooling jacket is attached to the Umformkern 13 such that during the hydroforming
  • Fixing screws 12 are useful support means, for example in the form of known in forming hold-downs, which the outer shell of the outer wall 2 each locally limited to the area of the welds 3, 3a and optionally also the weld sections 10 and / or the circumferential weld targeted during inflation support inside the cooling jacket.
  • This allows a particularly good heat transfer between the outside of the object to be cooled, for example, the surface of an electric motor, and the inner jacket of the cooling jacket. It when the hold-down or other support means are aligned so that the cooling jacket is pressed with its inner wall 1 as perpendicular as possible or directly to the surface of the Umformkerns is particularly advantageous.
  • the cooling jacket thus produced is provided with inlet and outlet means 18, for example connecting pieces, which are preferably welded directly to the outer wall 2 in the area of the connecting bore of the cooling jacket passing through the outer wall 2.
  • inlet and outlet means 18 for example connecting pieces, which are preferably welded directly to the outer wall 2 in the area of the connecting bore of the cooling jacket passing through the outer wall 2.
  • This is expediently carried out in an edge and / or corner region of the cylindrically bent cooling jacket sheet sandwich. Whose when bending almost abutting, close opposite transverse edges 14 (see also Figure 2) are to the cooling jacket to the
  • Stator 19 to tension with (not shown) elastic tensioning means such. Spring clips or the same held together.
  • Elevations 5,5a of the outer shell 2 which rests on this from the inside to the cylindrical cover 22.
  • elastic and / or elastic-plastic deformation of cover shell 22 also occurs. whereupon this reacts with the exertion of a radial counter-pressure inwards on the cooling jacket or its outer wall 2.
  • the cooling jacket is pressed all the more firmly against the object to be cooled, for example stator 19.
  • Deformation of the cover shell 22 is also manifested on its outer surface by alternating depressions 224 and elevations 225, which are approximately congruent with the depressions 4, 4a and elevations 5, 5a of the outer jacket of the cooling jacket.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La présente invention concerne une enveloppe réfrigérante et/ou un échangeur thermique à mettre en contact avec des produits à corps solide à refroidir, en particulier avec des machines électriques comprenant un rotor qui tourne à l'intérieur ou à l'extérieur d'un stator ou avec des réacteurs ou des contenants, l'enveloppe présentant une paroi intérieure et une paroi extérieure qui délimitent entre elles un espace creux de circulation qui est doté de moyens d'entrée et de sortie d'agent de refroidissement et de moyens directeurs destinés à matérialiser et/ou à délimiter au moins une trajectoire de circulation de l'agent de refroidissement entre la paroi intérieure et la paroi extérieure, des moyens d'entrée aux moyens de sortie. Selon l'invention, des zones planes ou sections planes individuelles mutuellement opposées de la paroi intérieure et de la paroi extérieure sont en contact mutuel entre leurs bords, des passages subsistant pour l'agent de refroidissement entre les zones planes ou sections planes adjacentes, et une ou plusieurs bosses et cavités sont présentes de façon alternée sur un ou plusieurs côtés extérieurs ou sur une enveloppe extérieure de la paroi intérieure et/ou de la paroi extérieure, les zones planes ou sections planes mutuellement opposées étant reliées de façon permanente par des zones de jonction individuelles et/ou des sections de jonction allongées.
EP08842055A 2007-10-25 2008-10-27 Enveloppe refrigerante destinee notamment a des machines electriques et son procede de realisation Withdrawn EP2203969A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08842055A EP2203969A2 (fr) 2007-10-25 2008-10-27 Enveloppe refrigerante destinee notamment a des machines electriques et son procede de realisation

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP07119335 2007-10-25
DE102007054218 2007-11-12
DE102007055910A DE102007055910A1 (de) 2007-10-25 2007-12-21 Kühlmantel insbesondere für elektrische Maschinen sowie Herstellungsverfahren dafür
PCT/EP2008/064555 WO2009053496A2 (fr) 2007-10-25 2008-10-27 Enveloppe réfrigérante destinée notamment à des machines électriques et son procédé de réalisation
EP08842055A EP2203969A2 (fr) 2007-10-25 2008-10-27 Enveloppe refrigerante destinee notamment a des machines electriques et son procede de realisation

Publications (1)

Publication Number Publication Date
EP2203969A2 true EP2203969A2 (fr) 2010-07-07

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08842055A Withdrawn EP2203969A2 (fr) 2007-10-25 2008-10-27 Enveloppe refrigerante destinee notamment a des machines electriques et son procede de realisation

Country Status (4)

Country Link
US (1) US20110083834A1 (fr)
EP (1) EP2203969A2 (fr)
DE (1) DE102007055910A1 (fr)
WO (1) WO2009053496A2 (fr)

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JP5120137B2 (ja) 2008-08-06 2013-01-16 三菱自動車工業株式会社 回転電機
DE102009001387A1 (de) * 2009-03-06 2010-09-09 Robert Bosch Gmbh Elektromaschine
US8944155B2 (en) * 2010-07-15 2015-02-03 Dana Canada Corporation Annular axial flow ribbed heat exchanger
CH703820A1 (de) * 2010-09-21 2012-03-30 Alstom Hydro France Luftgekühlter generator.
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US20110083834A1 (en) 2011-04-14
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