EP0633444B1 - Echangeur de chaleur avec plusieurs tubes d'échange en parallèle - Google Patents

Echangeur de chaleur avec plusieurs tubes d'échange en parallèle Download PDF

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Publication number
EP0633444B1
EP0633444B1 EP94110457A EP94110457A EP0633444B1 EP 0633444 B1 EP0633444 B1 EP 0633444B1 EP 94110457 A EP94110457 A EP 94110457A EP 94110457 A EP94110457 A EP 94110457A EP 0633444 B1 EP0633444 B1 EP 0633444B1
Authority
EP
European Patent Office
Prior art keywords
ribs
heat exchanger
cross
exchanger tube
flow
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 - Lifetime
Application number
EP94110457A
Other languages
German (de)
English (en)
Other versions
EP0633444A3 (fr
EP0633444A2 (fr
Inventor
Burkhard Trage
Harald Sassmann
Wolfgang Holten
Miroslav Podhorsky
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.)
Balcke Duerr GmbH
Babcock Borsig AG
Original Assignee
Balcke Duerr 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
Priority claimed from DE4322405A external-priority patent/DE4322405C2/de
Application filed by Balcke Duerr AG filed Critical Balcke Duerr AG
Publication of EP0633444A2 publication Critical patent/EP0633444A2/fr
Publication of EP0633444A3 publication Critical patent/EP0633444A3/fr
Application granted granted Critical
Publication of EP0633444B1 publication Critical patent/EP0633444B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F28F1/126—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 consisting of zig-zag shaped fins
    • F28F1/128—Fins with openings, e.g. louvered fins
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/08—Fins with openings, e.g. louvers

Definitions

  • the invention relates to a heat exchanger made of several parallel to each other arranged exchanger tubes, the cross section for the passage of a of the media involved in the heat exchange is large in relation to the height Has width and which to form a variety of perpendicular to Longitudinal direction of the exchanger tube extending flow channels for the other medium involved in heat exchange on both flat sides Ribs from a multiply deflected, opening and on Exchanger ribbed belt are provided.
  • a heat exchanger of this type is known from EP-A-0 546 334.
  • the one here Exchanger tubes are used in a device with the fins provided, which are formed from a ribbed band, which in front of the Fastening on the flat sides of the respective exchanger tube multiple deflections receives the required rib shape. Subsequently the ribbed belt thus shaped is attached to the respective one Flat side of the exchanger tube.
  • those made from an endless ribbed belt and one each over the Length of the flat sides with continuously formed channel-forming ribs Features in the form of lateral offsets. In this way should have an increased degree of turbulence in the medium flowing through the channels generated to increase the heat transfer.
  • a disadvantage of heat exchangers of this type is the relatively high tendency to become contaminated in the channels formed by the ribs. By the characteristics this tendency to contamination is shown in the form of individual lateral offsets still increased, because dirt particles are particularly easy in these places can fix what with progressive operation of the heat exchanger can lead to complete closure of the channel concerned. Hereby becomes an undesirable local deterioration in heat transfer behavior of the heat exchanger.
  • the invention is therefore based on the object of further developing the known heat exchanger in such a way that the influence of any contamination on the heat transfer performance of the heat exchanger is reduced.
  • the openings of the Ribs of adjacent exchanger tubes are arranged.
  • the flow exchange between the cross sections divided by the ribs is further improved in that the side surfaces of the ribs in Area of the rib base are provided with additional openings, the Opening cross sections are each smaller than the cross section of through two adjacent ribs formed flow channels.
  • the additional openings are preferably located halfway between two successive openings.
  • a particularly good connection between the ribbed belt and the respective one Exchanger tube is achieved when according to a preferred embodiment the ribbed band is folded approximately rectangular, so that the Deflection of flat surfaces for contact with the flat sides of the exchanger tube or on the appropriately designed surfaces of the ribbed belt of the neighboring exchanger tube. This also allows the improve mutual support between adjacent exchanger tubes.
  • Another embodiment of the heat exchanger is characterized by partly lowered, partly raised shapes in the side surfaces of the Ribs. These characteristics create or intensify a turbulence of the flowing medium, which increases the heat transfer performance can be increased.
  • the ribbed band is over a linear, continuous welding on the flat sides of the Exchanger tube attached. This results in a particularly good one metallic connection between the parts and thus a high heat transfer between the exchanger tube and the fins.
  • the rib band is preferably welded to the respective one Flat side of the exchanger tube by means of a capacitor discharge welding process produced.
  • This welding process enables when merging the ribbed plate and the exchanger tube Broad sides of the base body to the contour of the respective rib base Adjust without gaps.
  • the pressure required for this is two Electrodes generated, which are part of the capacitor discharge welding machine are. While one electrode in the rib foot area between two adjacent ribs, the on the other inside of the base body and forms here an abutment. In this way the is for a gapless touch connecting parts taken care of so that after unloading Capacitor discharge welding machine capacitors a linear Fastening the ribs on the base body and thus a very good heat transfer between these parts is achieved.
  • AT-A-380 104 was in the broadest sense a heat exchanger to be addressed plate radiator known in which by appropriate Forming two interconnected radiator plates a plurality of vertically extending channels for the heat-emitting medium is. The channels are in a row one behind the other. In contrast to Heat exchangers according to the invention run through a convector plate formed flow channels parallel to those formed by the radiator plate Channels for the heat-emitting medium.
  • the one from AT-A-380 104 known plate radiator differs not only in terms of Use of several exchanger tubes arranged parallel to each other in relation to the height of the very large width of the flow cross-section of the subject of the invention, but also with regard to the assignment of on the one hand from the heat emitting and on the other hand from the heat absorbing Medium flow channels. Because of these fundamental differences the plate radiator known from AT-A-380 104 has no relation to the problem underlying the present invention, namely the influence of any contamination on the heat transfer performance to reduce.
  • NL-A-89 00 293 was finally a generic heat exchanger known, but which has no openings, the cross section at least the size of the flow cross-section through two adjacent ribs of the same exchanger tube formed flow channel corresponds.
  • the known heat exchanger are narrow slots alternately over the entire area of the folded ribs formed, that is, both in Head area as well as in the side areas and in the foot area.
  • the heat exchanger shown in Fig. 1 consists of exchanger tubes 1, which are arranged parallel to each other in the manner of a package. 1 are for reasons of clarity, only two such exchanger tubes 1 shown.
  • Fig. 1 shows that the cross section of the exchanger tubes 1 for the Passage of one of the media involved in the heat exchange in proportion to the height H has a large width B.
  • the longitudinal edges of the exchanger tube thus formed 1 are rounded, so that the total cross section of a elongated oval.
  • the other medium is cross-flow over the outer flat sides 2 of the exchanger tubes 1 out.
  • the ribs 3 are made from an endless sheet by repeated bending manufactured so that, viewed in the longitudinal direction of the exchanger tube 1, the Ribs 3 line up in a meandering pattern. This is particularly good in Fig. 2 recognizable.
  • the meandering of the ribbed band 4 thus formed are, as also Fig. 2 reveals a rectangular shape, so that the exchanger tube 1 facing and the deflections 5 facing away from the exchanger tube 1 each form flat surfaces 6.
  • the surfaces 6 serve a particular purpose good connection of the rib base area with the flat side 2 of the Exchanger tube 1.
  • the material for the ribbed belt 4 is e.g. Steel sheet with a thickness of 0.1 to 0.4 mm, which on both sides with a thin aluminum layer is plated.
  • the ribs 3 consisting of the rib band 4 deflected in a meandering shape are located on both sides of the exchanger tubes 1.
  • the so designed Exchanger tubes 1 can then be assembled into any packages, the attachment and spacing of the individual exchanger tubes 1 to each other at their ends.
  • the diversions 5 at the end of the rib 3, the smallest possible distance to the opposite Deflections 5 of the adjacent exchanger tube 1 exhibit.
  • the distance must not be so small that the danger a contact between the fins 3 of the adjacent exchanger tubes 1 exists.
  • Capacitor discharge welding is a special one Type of resistance welding where the energy required during welding is not taken directly from the mains via a transformer is, but a capacitor bank that acts as an energy storage outside of Welding time is loaded.
  • the advantage of capacitor discharge welding consists in the suitability to use different materials, e.g. Steel / aluminum. You can also use this procedure also weld surface-treated materials, e.g. galvanized or aluminized sheets without causing surface damage is coming.
  • the capacitor discharge welding process uses two of them independent electrodes 7.8.
  • the upper electrode 7 available five times and consists of disc-shaped individual electrodes from a suitable electrode material, e.g. CuCrZr.
  • the lower one Electrode 8 is designed as a plate, which extends over the entire width of the Exchanger tube 1 extends and has exactly its inner profile. In this way, the lower electrode 8 also serves to guide the base body of the exchanger tube 1 during the welding process. Especially but the lower electrode 8 forms an abutment for those of the upper Electrodes 7 generated pressing forces.
  • the lower electrode 8 is more suitable for this Way with the interposition of insulation on the used Supported welding machine.
  • the alignment of the upper electrodes 7 is such that this with its narrow end faces exactly between two neighboring Ribs 3 can retract until they are located at the rib base area between them get to the inside of surface 6.
  • Spring elements 7a cause a defined pressing force, that of the abutment serving lower electrode 8 is recorded.
  • the capacitors of the welding machine are discharged, which temporarily causes high energy from the upper electrodes 7 of the lower electrode 8 flows.
  • the finished Heat exchanger parts come out of the cold after welding Machine, therefore retain their shape and show no tendency to warp or change of shape.
  • Figures 4 and 5 show exchanger tube 1 and fins 3 immediately before joining them together, the surfaces coming into contact with one another are provided with a surface structure designed in the pattern repeat.
  • the outer flat side 2 of the Exchanger tube 1 with a fine, even corrugation 8 with groove depths 0.1 to 0.3 mm.
  • the 5 the surface structure designed in the repeat at the bottom of the rib foot areas, i.e. in the area of the deflection 5. For this purpose, these are embossed in the form of humps projecting downwards or surveys 8a.
  • the rib band 4 is a continuous, meandering folded Sheet shown without further structures.
  • the ribs do not form a closed line over their entire length Channels, but they are evenly spaced with openings 9 provided, as the exact representations Fig. 1, Fig. 2, Fig. 4 and Fig. 5 show.
  • These openings 9 are in the area of the flat side 2 of the Exchanger tube 1 arranged deflections 5, i.e. in the area the end of the ribs. A mass transfer can take place via these openings 9 with which flowing through the ribs 3 of the respectively adjacent exchanger tube 1 Medium take place.
  • the flow arrows A illustrate the flow entry into the area of the ribs.
  • contamination S in one of the cross-sections it would not be possible for the flow to pass in this area a heat exchanger of the known type, the flow through this cross section be completely prevented.
  • the flow can the path of a redirection U go.
  • the flow passes through the opening in front of the obstacle 9 in that cross-section through the ribs 3 of the adjacent Exchanger tube 1 is formed.
  • part of the flow can then pass over the following Flow back opening 9 into the original cross section, so that the Flow ultimately leaves the heat exchanger evenly.
  • each of the openings 9 is at least the size of the cross-section through which it flows Q between two adjacent ribs 3.
  • the individual ribs 3 are provided with additional geometric structures, which serve the medium flowing through or flowing past to mix or create turbulence.
  • additional geometric structures which serve the medium flowing through or flowing past to mix or create turbulence.
  • the ribs 3 and others Characteristics 10 in the form of lateral bulges provided that alternate to one side and to the other side of the respective Extend rib 3. These characteristics 10 have a considerable effect Increase in turbulence of the flowing medium.
  • To achieve additional openings 11 are also provided. These are located in the side surfaces of the ribs 3 in the area of the base of the rib. Their opening cross section is significantly smaller than the opening cross section of the openings 9, in particular smaller than the size of the flow Cross section Q between two adjacent ribs 3.
  • Fig. 1 shows that the additional openings 11 are each halfway between two successive openings 9 are located.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Power Steering Mechanism (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Claims (8)

  1. Echangeur de chaleur constitué de plusieurs tubes échangeurs (1) disposés parallèlement les uns aux autres, dont la section présente, pour le passage d'un milieu participant à l'échange de chaleur, une largeur (B) grande par rapport à sa hauteur et qui sont munis, pour la formation d'une pluralité de canaux de circulation, s'étendant perpendiculairement à la direction longitudinale du tube échangeur (1) et destinés à l'autre milieu participant à l'échange de chaleur, sur leurs deux faces planes (2), d'ailettes (3) constituées par une bande d'ailettes (4) à replis multiples, présentant des ouvertures et fixée sur le tube échangeur (1),
       caractérisé en ce que
       les ouvertures (9) sont conformées, dans la zone des replis (5), parallèles à la face plane (2) des tubes échangeurs (1), des ailettes (3), avec, à chaque fois, au moins la taille de la section d'écoulement du canal de circulation, formé par deux ailettes voisines, du même tube échangeur (1).
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que les ouvertures (9) des ailettes (3) de tubes échangeurs voisins (1) sont en recouvrement.
  3. Echangeur de chaleur selon la revendication 1 ou 2, caractérisé en ce que les faces latérales des ailettes (3) sont munies, dans la zone du pied de l'ailette, d'ouvertures supplémentaires (11) dont les sections d'ouverture sont, à chaque fois, plus faibles que la section des canaux de circulation formés par deux ailettes voisines (3).
  4. Echangeur de chaleur selon la revendication 3, caractérisé en ce que les ouvertures supplémentaires (11) se trouvent, à chaque fois, à mi-longueur entre deux ouvertures (9) successives.
  5. Echangeur de chaleur selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la bande d'ailettes (4) est pliée de manière sensiblement rectangulaire de telle manière que les replis (5) forment des surfaces planes (6) destinées à venir en contact sur les faces planes (2) du tube échangeur (1) ou sur les surfaces conformées de manière correspondante de la bande d'ailettes (4) du tube échangeur voisin (1).
  6. Echangeur de chaleur selon l'une quelconque des revendications 1 à 5, caractérisé par des empreintes (10) conformées partiellement en relief et aménagées dans les surfaces latérales des ailettes (3).
  7. Echangeur de chaleur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la bande d'ailettes (4) est fixée sur les faces latérales (2) du tube échangeur (1) au moyen d'un soudage continu linéaire.
  8. Echangeur de chaleur selon la revendication 7, caractérisé en ce que le soudage de la bande d'ailettes (4) sur la face latérale respective (2) est réalisée au moyen d'un procédé de soudage à décharge à condensateurs.
EP94110457A 1993-07-06 1994-07-05 Echangeur de chaleur avec plusieurs tubes d'échange en parallèle Expired - Lifetime EP0633444B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4322405 1993-07-06
DE4322405A DE4322405C2 (de) 1993-07-06 1993-07-06 Verfahren zur Herstellung von Wärmetauscherelementen
DE9310827U 1993-07-20
DE9310827U DE9310827U1 (de) 1993-07-06 1993-07-20 Waermetauscher aus mehreren parallel zueinander angeordneten austauscherrohren

Publications (3)

Publication Number Publication Date
EP0633444A2 EP0633444A2 (fr) 1995-01-11
EP0633444A3 EP0633444A3 (fr) 1995-04-26
EP0633444B1 true EP0633444B1 (fr) 1998-05-20

Family

ID=25927414

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94110457A Expired - Lifetime EP0633444B1 (fr) 1993-07-06 1994-07-05 Echangeur de chaleur avec plusieurs tubes d'échange en parallèle

Country Status (14)

Country Link
US (1) US5429185A (fr)
EP (1) EP0633444B1 (fr)
JP (1) JPH07151481A (fr)
KR (1) KR950003781A (fr)
CN (1) CN1102475A (fr)
AT (1) ATE166450T1 (fr)
AU (1) AU6601494A (fr)
BR (1) BR9402643A (fr)
CA (1) CA2127413A1 (fr)
DE (2) DE9310827U1 (fr)
IL (1) IL110148A (fr)
IN (1) IN190153B (fr)
RU (1) RU2085822C1 (fr)
TW (1) TW247345B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009032166B3 (de) * 2009-07-08 2010-09-30 Handtmann Systemtechnik Gmbh & Co. Kg Verfahren zum Verbinden von Wärmetauscherkomponenten durch Schweißen und Löten

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US6174454B1 (en) 1999-01-29 2001-01-16 National Science Council Slurry formulation for selective CMP of organic spin-on-glass insulating layer with low dielectric constant
DE19813989A1 (de) * 1998-03-28 1999-09-30 Behr Gmbh & Co Wärmetauscher
GB2354817A (en) * 1999-09-29 2001-04-04 Ford Motor Co Fin construction
US20040173344A1 (en) * 2001-05-18 2004-09-09 David Averous Louvered fins for heat exchanger
DE10328748B4 (de) * 2003-06-25 2017-12-14 Mahle International Gmbh Wärmeübertrager, insbesondere Ladeluftkühler für Nutzfahrzeuge
US20070012430A1 (en) * 2005-07-18 2007-01-18 Duke Brian E Heat exchangers with corrugated heat exchange elements of improved strength
JP2012007778A (ja) * 2010-06-23 2012-01-12 Komatsu Ltd 熱交換器
WO2014206455A1 (fr) * 2013-06-26 2014-12-31 L&P Swiss Holding Ag Lombostat et son procédé de production
CN105484853B (zh) * 2014-09-17 2018-07-06 泰安鼎鑫冷却器有限公司 一种双波内翅片结构中冷器
KR20160071617A (ko) 2014-12-12 2016-06-22 정주옥 커버링용 스핀들 장치
KR101910229B1 (ko) 2015-06-08 2018-10-19 정주옥 스핀들 장치용 커버체
US11828545B2 (en) * 2019-01-15 2023-11-28 T.Rad Co., Ltd. Corrugated fin type heat exchanger
JP2022070491A (ja) * 2020-10-27 2022-05-13 有限会社和氣製作所 熱交換器
CN113280544A (zh) * 2021-05-14 2021-08-20 章世燕 食用冰发生器

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Publication number Priority date Publication date Assignee Title
DE102009032166B3 (de) * 2009-07-08 2010-09-30 Handtmann Systemtechnik Gmbh & Co. Kg Verfahren zum Verbinden von Wärmetauscherkomponenten durch Schweißen und Löten

Also Published As

Publication number Publication date
CN1102475A (zh) 1995-05-10
RU2085822C1 (ru) 1997-07-27
BR9402643A (pt) 1995-04-04
IL110148A (en) 1997-06-10
DE59405984D1 (de) 1998-06-25
AU6601494A (en) 1995-01-19
ATE166450T1 (de) 1998-06-15
RU94023243A (ru) 1996-05-10
TW247345B (fr) 1995-05-11
CA2127413A1 (fr) 1995-01-07
IN190153B (fr) 2003-06-21
KR950003781A (ko) 1995-02-17
JPH07151481A (ja) 1995-06-16
IL110148A0 (en) 1994-10-07
US5429185A (en) 1995-07-04
EP0633444A3 (fr) 1995-04-26
DE9310827U1 (de) 1993-09-23
EP0633444A2 (fr) 1995-01-11

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