EP0225533B1 - Echangeur de chaleur plan - Google Patents

Echangeur de chaleur plan Download PDF

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Publication number
EP0225533B1
EP0225533B1 EP86116238A EP86116238A EP0225533B1 EP 0225533 B1 EP0225533 B1 EP 0225533B1 EP 86116238 A EP86116238 A EP 86116238A EP 86116238 A EP86116238 A EP 86116238A EP 0225533 B1 EP0225533 B1 EP 0225533B1
Authority
EP
European Patent Office
Prior art keywords
pipe
plate
heat exchanger
slots
exchanger according
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.)
Expired
Application number
EP86116238A
Other languages
German (de)
English (en)
Other versions
EP0225533A1 (fr
Inventor
Walter Kreuzer
Kurt Bubeck
Karl Heinz Dipl.-Ing. Staffa
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0225533A1 publication Critical patent/EP0225533A1/fr
Application granted granted Critical
Publication of EP0225533B1 publication Critical patent/EP0225533B1/fr
Expired legal-status Critical Current

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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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
    • 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
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • 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
    • Y10T29/49366—Sheet joined to sheet
    • Y10T29/49368—Sheet joined to sheet with inserted tubes

Definitions

  • the invention relates to a surface heat exchanger according to the preamble of claim 1.
  • the invention is therefore based on the object of designing a surface heat exchanger of this type in such a way that the manufacture does not require a welding or soldering process, but still ensures good heat transfer between the tube and the carrier plate.
  • This configuration creates continuous contact surfaces between the tube and the support plate on opposite outer sides of the tube, which ensure a heat transfer that is as good as that between the fins attached to a tube.
  • the production of the new surface heat exchanger does not require a welding, gluing or soldering process and can be carried out in a simple manner.
  • the heat transfer between the tube and plate can also be improved in that the width of the slots is selected to be somewhat smaller than the tube diameter. As a result, a certain deformation of the tubes and the slot edges occurs already when the tubes are positioned in the slots in the plate. If the pipes are provided with pinch folds, which each overlap the opposite cut edges, a stable positive connection is created in addition to the frictional connection between the pipe and the slots.
  • the new surface heat exchanger can be designed to be extremely stable and has excellent heat transfer properties.
  • the tube is formed in a serpentine shape with straight legs running parallel to one another, to keep only these legs in parallel slots within the plate, while - in addition to the connecting ends - the connecting bends of these legs also protrude cranked out of the plane of the plate and onto just rest on the plate. It has been shown that the resulting loss of heat-transfer contact surfaces is not so critical that the simplifications in production could not outweigh this. Above all, in this embodiment it is very simple to provide the pinch folds in the area of the parallel slots continuously on both sides of the plate, so that the tube in the area of its parallel legs not only on the end faces of the slot edges, but also on the slot via the pinch folds adjoining edge areas of the plate so that this significantly increases the heat transfer area here.
  • the slots can be interrupted by transverse webs, which are deformed when the tubes are inserted, or even previously in a semicircular manner, the tube then being provided with the pinch folds only on the side of the plate opposite the transverse webs.
  • Such a configuration can also be provided, for example, in the region of the connecting bends of the serpentine tube, so that it is not necessary to lead the connecting bends out of the plate plane in a cranked manner. Nevertheless, in this way, in the area of the connecting bends, there is no need to provide a pinch fold arrangement running on both sides, the manufacture of which is possible, but is not necessarily expedient in view of a later bending of the plate for adaptation to installation conditions.
  • the deformations can be applied along the tube only at points at intervals in succession, with adjacent deformations also being arranged alternately on one or the other side of the tube protruding from the plate plane.
  • This embodiment has the advantage that the tube can be fastened in this way largely independently of tolerance in the slot, even in the region of the connecting bends of serpentine tubes.
  • the slot can therefore also have a shape adapted to this snake shape.
  • a device according to the dependent claims 10 to 12 has proven to be particularly advantageous, with devices according to these features first of all positioning the pipe coil in the carrier plate and then also fastening it in a form-fitting manner.
  • Fig. 1 four parallel slots 3, 4, 5 and 6 are arranged in a plate 1, for example made of aluminum, each of which does not pass through to the edge 1a of the plate.
  • the slots 3 and 6 are formed somewhat longer than the slots 4 and 5.
  • the slots 3 and 6 each run on their left side up to the dashed line 20, from which the slots 4 and 5 also extend. On their right side, however, the slots 3 and 6 extend up to approximately the boundary line 22, while the slots 4 and 5 only extend up to the indicated boundary line 21.
  • the width b of the slots 3, 4, 5 and 6 in the illustrated embodiment is chosen to be somewhat smaller than the diameter d of the tube 2, which is only indicated in FIG. 7, so that, as shown in FIG. 2 emerges, the tube 2, which has received an oval shape before the pressing in of its straight legs into the slots 3, 4, 5 and 6, which is denoted by 2e in FIG. 2, is pressed into the slots and with its widest point is tight against the opposite slot edges 8.
  • the tube 2 is also in contact with these slot edges, which enables good heat transfer between the heat exchange medium which is later passed through the tube 2 and the adjacent plate 1.
  • the axis of the tube 2 in its position 2e runs in the central plane of the plate 1. In the following, it will be said for this arrangement that the tube lies in the plate plane.
  • the position 2e of the tube 2 is not the final shape for the form-fitting attachment of the tube 2 in the slots in the plate. Rather, in the exemplary embodiment, the pipe legs 2 ', 2 ", 2"' and 2 "" are continuously provided with deformation 7 from both sides of the plate, which in each case lead to continuous flattening on both sides of the pipe, but in the area of the slot edges 8 but pinch folds 9 generate, which engage around the slot edges 8 from both sides.
  • the tube thus squeezed sits positively and firmly in the plate 1.
  • the contact surfaces between plate 1 and tube 2 are much larger than the end faces of the slot edges 8 due to the pinch folds 9 and their contact surfaces on the plate 1, so that an excellent operation Heat transfer is possible.
  • a modified embodiment of a surface heat exchanger is shown, insofar as here, which is also possible in principle in the embodiment of FIG. 1, a single continuous slot adapted to the snake shape of the tube 2 is provided, which consists of the straight sections 3 ', 4' and the arcuate connecting these two slit parts 23.
  • the serpentine tube 2 with the exception of its connecting ends 2b, which protrude from the plane of the plate in a similar manner to FIG. 3, is inserted so that the coil lies in the plane of the plate.
  • the securing of the tube 2 in this position is carried out by transverse webs 10 which divide the slots 3 ', 23 and 4' and which are deformed semicircularly downwards before or when the tube 2 is inserted.
  • the deformation can also take place in such a way that the tube 2 reaches the region of the crosspieces 10 with a little more than half of its circumference, so that it is held firmly in this position due to the deformation occurring when it is inserted.
  • the top of the tube 2 can again be provided with deformations 7 in the form of a continuous flattening, so that the pinch folds 9 form, which rest on the plate 1 from the top.
  • connection ends 2b it is possible to fix the pipe bends 2d on the side facing away from the crosspieces 10 in that clamping tabs 24 are punched out of the plate 1 and partially placed over the circumference of the pipe in the region of the connecting bend 2d.
  • clamping tabs 24 are punched out of the plate 1 and partially placed over the circumference of the pipe in the region of the connecting bend 2d.
  • connection ends 2b A similar fixation is also conceivable for the connection ends 2b.
  • FIGS. 6 to 8 Another and extremely advantageous variant of a surface heat exchanger is shown in FIGS. 6 to 8.
  • the serpentine slot arranged within the plate 1 corresponds to the serpentine shape of the tube 2.
  • the slot is arranged exclusively within the plate and a peripheral edge 1a remains.
  • the connection ends 2b and 2c are also led out of the plate level in this embodiment, as shown in Fig. 3.
  • the connection ends 2b and 2c are secured here in the area of the edge 1a of the plate by riveted tabs 19.
  • the pipe 2 with the exception of its connecting ends 2b and 2c, which runs completely in the plate plane, is not provided in this exemplary embodiment with continuous pinches over the entire length of the tube, but only with pinches 7a provided at points, which, as shown in FIGS. 7 and 8 in individual can be seen, each arranged along the tube 2 at a distance from one another and are designed such that adjacent pinch points 7a with the resulting pinch folds 9 are each provided on opposite sides of the plate 1 on the tube 2, which thus inside with is alternately provided with constrictions protruding into the free cross section.
  • These alternating constrictions act on the flowing heat exchange medium in the manner of flow baffles, which excite the flowing medium to turbulence and therefore ensure the improvement of the heat transfer coefficient.
  • FIGS. 6 to 8 a device for producing a surface heat exchanger according to FIGS. 6 to 8 is shown schematically.
  • the device consists of two mutually movable blocks 13 and 14, between which the plate 1, previously provided with the punched-out slots, is inserted with the serpentine tube 2.
  • the serpentine tube 2 has not yet been brought into the position shown in FIG. 9.
  • the serpentine tube 2 is initially when the blocks 13 and 14 have moved apart above the plate level and only protrudes with a part of its respective circumference into the punched slots.
  • the blocks 13 and 14 each have recesses 15 at the location of the slots or at the location where the tubes 2 are pressed into the slots, which correspond to the course of the pipe coil and the course of the slots and have a cross section that is approximately corresponds to half the contour of the tube 2 to be used.
  • the recesses 15 therefore have a semicircular cross section. If the blocks 13 and 14 are therefore moved together until they abut the sheet metal 1, the round tube 2 is simultaneously pushed into the plate plane and, similarly as already described with reference to FIG. 1, between the diametrically opposite slot edges 8 jammed at its widest point.
  • holes 25 with punches 12 guided therein are provided along the recesses 15 at a corresponding distance, which can be acted upon from outside with a force in a manner not shown and can be pressed in the direction of tube 2.
  • Such stamps 12, as shown are provided both in the upper block 13, and - in a manner not shown - in the lower block 14, so that by pressing these stamps 12, as can be seen from FIGS. 6 to 8, punctiform Squeezes 7a can alternately be attached to the tube 2 on both sides.
  • the pinch points 7a are given different shapes. If, for example, a stamp 12 'with an end face 27 according to FIG.
  • pinch points 7a arise on the two tube sides, which roughly correspond to the appearance Fig. 12. If, however, a stamp 12 "is provided with a circular end face 30 which runs perpendicular to the cylindrical part 29, then pinch points 7a are formed which, viewed perpendicularly to the plate plane, have the appearance according to FIG. 13.
  • the pinch points 7a according to FIG. 13 result longer creases 9 "which can overlap the plate than in the example of FIG. 12, where the creases 9 'remain relatively short. However, the squeezing forces to be applied are lower in the example of FIG. 12. If necessary, the distance between the alternating pinch points can be chosen to be smaller than in the example according to FIG. 13 if the heat-transferring surface between the tube and the plate is to be kept as large as possible.
  • pinching instead of the type of fastening shown by pinching, a combination of such pinching and continuous pinching would of course also be possible, for example pinpointing in the area of the pipe bends and continuous pinching of the tube in the area of its straight legs.

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

Claims (12)

1. Echangeur de chaleur plan, se composant d'une plaque (1) en matériau conducteur de la chaleur et d'au moins un tube relié à celle-ci, notamment en forme de méandres et qui est parcouru par un agent d'échange de chaleur, la plaque étant pourvue de fentes (3, 4, 5, 6, 23) dont la largeur est adaptée au diamètre du tube (2) et dans lesquelles le tube est engagé, caractérisé en ce que le tube (2) est maintenu respectivement en des zones diamétralement opposées de son diamètre (d) entre des bords mutuellement opposés (8) des fentes (3,4,5,6, 23), et comporte, des deux côtés de la plaque (1), perpendiculairement à son axe longitudinal, des déformations (7) avec des plis d'écrasement (9), qui s'accrochent sur les bords (8) des fentes des deux côtés par complémentarité de formes.
2. Echangeur de chaleur plan selon la revendication 1, caractérisé en ce que la largeur (b) des fentes (3,4,5,6,23) est un peu plus petite que le diamètre (d) du tube (2).
3. Echangeur de chaleur plan selon les revendications 1 et 2, caractérisé en ce que les fentes (3, 4, 5, 6) ne s'étendent pas de façon continue jusqu'au bord (1a) de la plaque (1), et en ce que le tube (2) est recourbé à ses deux extrémités de liaison (2b, 2c) pour sortir du plan de la plaque (1).
4. Echangeur de chaleur plan selon les revendications 1 à 3, caractérisé en ce que le tube (2) est réalisé avec une forme de serpentin en comportant des branches droites (2', 2", 2"', 2"") qui sont orientées parallèlement entre elles, et en ce que seulement les branches sont maintenues dans des fentes parallèles (3,4, 5, 6) tandis que les coudes de liaison (2d) sont recourbés pour sortir du plan de la plaque (1).
5. Echangeur de chaleur plan selon les revendications 1 à 4, caractérisé en ce que les plis d'écrasement (9) sont prévus dans la zone des fentes (3,4, 5, 6) de façon continue et des deux côtés de la plaque (1).
6. Echangeur de chaleur plan selon une des revendications 1 à 3, caractérisé en ce que les fentes (3) sont interrompues par des languettes transversales (10), qui sont déformées selon un profil demi-circulaire lors de l'engagement des tubes (2), et en ce que le tube est pourvu de plis d'écrasement (9) seulement sur le côté de la plaque (1) qui est placé en regard des languettes transversales (10).
7. Echangeur de chaleur plan selon une des revendications 1 à 3, caractérisé en ce que les déformations (7) sont réalisées ponctuellement et à intervalles l'une après l'autre le long du tube (2).
8. Echangeur de chaleur plan selon la revendication 7, caractérisé en ce que des déformations adjacentes (7) sont disposées en alternance sur l'un ou l'autre côté du tube (2) sortant du plan de plaque.
9. Echangeur de chaleur plan selon les revendications 7 et 8, caractérisé en ce que le tube (2) est plié en forme de serpentin, et qu'il est prévu une fente (3, 4, 5, 6, 23) adaptée à la forme de serpentin du tube, dans laquelle sont également engagés les coudes (2d) du tube à peu près en coïncidence avec le plan de plaque.
10. Dispositif de fabrication d'un échangeur de chaleur plan selon la revendication 1, caractérisé par un support (11) pour la plaque (1), et par au moins un poinçon (12), mobile par rapport audit support, pour permettre un positionnement et une déformation du tube (2).
11. Dispositif selon la revendication 10, caractérisé en ce que le support se compose de deux blocs (13, 14), mobiles, placés en regard l'un de l'autre, et dont au moins un est pourvu d'un évidement (15) à la fois adapté à la forme du tube et place en regard du poinçon (12).
12. Dispositif selon la revendication 11, caractérisé en ce que chacun des blocs (13,14) est pourvu d'évidements (15), et en ce qu'il est prévu dans chacun des blocs, le long desdits évidements, plusieurs poinçons (12), déplaçables perpendiculairement à ceux-ci en vue d'une déformation ponctuelle du tube (2) et que, ceux des poinçons qui sont associés aux blocs mutuellement opposés sont disposés en étant décalés mutuellement dans la direction des évidements.
EP86116238A 1985-12-10 1986-11-24 Echangeur de chaleur plan Expired EP0225533B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3543541 1985-12-10
DE19853543541 DE3543541A1 (de) 1985-12-10 1985-12-10 Flaechenwaermetauscher

Publications (2)

Publication Number Publication Date
EP0225533A1 EP0225533A1 (fr) 1987-06-16
EP0225533B1 true EP0225533B1 (fr) 1988-12-14

Family

ID=6288061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86116238A Expired EP0225533B1 (fr) 1985-12-10 1986-11-24 Echangeur de chaleur plan

Country Status (4)

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US (1) US4763727A (fr)
EP (1) EP0225533B1 (fr)
DE (2) DE3543541A1 (fr)
ES (1) ES2004832B3 (fr)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
US5423498A (en) * 1993-04-27 1995-06-13 E-Systems, Inc. Modular liquid skin heat exchanger
GB9501089D0 (en) * 1995-01-20 1995-03-08 Zeneca Ltd Monoazo pigments
US7832159B1 (en) * 2006-06-06 2010-11-16 Kayhart Paul H Radiant in-floor heating system
US8104466B2 (en) * 2007-08-29 2012-01-31 Tom Kerber Solar energy collecting assembly for a solar energy converter
WO2010003938A1 (fr) * 2008-07-07 2010-01-14 Arcelik Anonim Sirketi Evaporateur
EP2184103A1 (fr) * 2008-11-11 2010-05-12 Onea Engineering Austria GmbH Réacteur modulaire
US9437903B2 (en) * 2012-01-31 2016-09-06 Johnson Controls Technology Company Method for cooling a lithium-ion battery pack
WO2014167506A1 (fr) 2013-04-10 2014-10-16 Council Of Scientific & Industrial Research Réacteur continu doté de sections tuyaux rétrécis destiné à un mélange et transfert thermique
US10694641B2 (en) 2016-04-29 2020-06-23 Intel Corporation Wickless capillary driven constrained vapor bubble heat pipes for application in electronic devices with various system platforms
JP6396533B1 (ja) * 2017-04-26 2018-09-26 レノボ・シンガポール・プライベート・リミテッド プレート型熱輸送装置、電子機器及びプレート型熱輸送装置の製造方法

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CA496027A (fr) * 1953-09-08 Beck Jozsef Appareil d'echange de temperature et elements de construction pour leur fabrication
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Also Published As

Publication number Publication date
DE3543541A1 (de) 1987-06-11
US4763727A (en) 1988-08-16
ES2004832B3 (es) 1991-08-16
DE3661442D1 (en) 1989-01-19
EP0225533A1 (fr) 1987-06-16

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