EP1265046B1 - Ailette, tube et échangeur de chaleur - Google Patents

Ailette, tube et échangeur de chaleur Download PDF

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Publication number
EP1265046B1
EP1265046B1 EP02006435A EP02006435A EP1265046B1 EP 1265046 B1 EP1265046 B1 EP 1265046B1 EP 02006435 A EP02006435 A EP 02006435A EP 02006435 A EP02006435 A EP 02006435A EP 1265046 B1 EP1265046 B1 EP 1265046B1
Authority
EP
European Patent Office
Prior art keywords
tube
flow
indentations
fin
adjacent
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
EP02006435A
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German (de)
English (en)
Other versions
EP1265046A2 (fr
EP1265046A3 (fr
Inventor
Michael Kohl
Kurt Dr.-Ing. Molt
Gerrit Dr.-Ing. Wölk
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
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Filing date
Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1265046A2 publication Critical patent/EP1265046A2/fr
Publication of EP1265046A3 publication Critical patent/EP1265046A3/fr
Application granted granted Critical
Publication of EP1265046B1 publication Critical patent/EP1265046B1/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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/025—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being corrugated, plate-like elements

Definitions

  • the present invention relates to a rib for use in a pipe, in particular a flat tube, for a heat exchanger, in particular a capacitor.
  • the rib according to the invention is for a Tube intended for use in multi-flow capacitors.
  • flat tubes are often used as Multi-channel pipes are formed, wherein for example by the individual channels Refrigerant flows.
  • These flat tubes are usually around extruded profiles or around welded pipes in which one essentially corrugated rib is inserted. By this shaping arise discrete flow channels, which are separated from each other.
  • Heat exchangers and condensers are conventionally located between the flat tubes ribs, which enlarges the heat-transmitting Serve surface with respect to the air flowing over it and which soldered together a heat transfer network of the heat exchanger or form capacitor.
  • Such a capacitor is disclosed, for example, in EP-A-0 219 974 described.
  • the condenser has a pair of spaced headers
  • Each tube stands with each of the Manifolds in fluid communication and is elongate in cross section, wherein the smaller dimension of the cross section substantially perpendicular to the direction the air flow through the condenser is aligned.
  • Each of the Tubing also has a plurality of separate, hydraulically parallel fluid flow paths.
  • FIG 8 is a described in EP-A-1 065 466 flat tube 20 for Heat exchanger with a swirling device provided in the flat tube (Turbulator) 22 shown.
  • the swirling device 22 has a substantially planar base 24 extending in the longitudinal and transverse directions extends to the tube over a predetermined length.
  • the swirling device has 22 a plurality of laterally spaced apart and longitudinally extending grooves 26 for swirling the fluid in Flat tube on.
  • the grooves 26 have a length of about 2.5 to 7.0 mm in Flow direction.
  • the grooves 26 are laterally about 0.76 mm apart.
  • the laterally spaced apart Grooves 26 extend perpendicular to the plane of the base 24 in one alternating pattern, so that a groove 26 extends upwards and the laterally adjacent groove 26 extends downwards. Further are the individual grooves 26 alternately in the flow direction in opposite directions Directions formed so that the end faces 28 of two in Longitudinal direction of adjacent grooves 26 are completely open. This can Flow fluid through the open end faces 28.
  • this construction can be in terms of their heat transfer characteristics, but especially with regard to flow resistance, continues to be much to be desired.
  • EP 0538 849 discloses a rib with areas of reduced height.
  • the GB 1184125 discloses a heat exchanger with individual slots in a sheet.
  • the present invention is based on the object, an improved Device or rib to provide, in particular in a fluid-flow pipe, preferably a flat tube, for a heat exchanger and / or capacitor is applicable to an improved Efficiency to achieve. This task is combined with the characteristics of Claims solved.
  • the invention is based on the basic idea of the device (hereinafter also referred to as "rib") in the transverse direction corrugated, wherein in the individual troughs and / or wave crests depressions are provided.
  • the corrugation of the rib forms together with a Tube into which the rib is introduced, several substantially parallel from each other extending flow channels. Emerge through the depressions between two parallel flow channels, however are not directly adjacent, but by an intermediate Flow channel are separated from each other, cross-connections, through the a portion of the fluid is diverted. The remaining, not redirected part of the Fluids continue to flow through the respective flow channel.
  • the tube has at least one at least Sectionwise extending in the tube longitudinal rib of this kind, the rib, as already described above, in cross section in is substantially undulating, whereby in the tube several substantially be formed parallel to each other flow channels.
  • the individual ribs are recesses provided by the at least one of the flow channels with at least one other, not directly adjacent flow channel, d. H. the next but one flow channel, connected is.
  • the depressions are designed such that they not completely block individual flow channels, but the fluid can continue through each one of the flow channels.
  • the rib according to the invention thus has several depressions, which as Possibility of a transverse exchange of the fluid flowing in the pipe serve. This cross-exchange takes place via a depression, which in a Flow channel is provided and the two next to this flow channel connecting adjacent adjacent flow channels with each other.
  • the Shape of the depression, d. H. their length and depth, depending on the application vary in certain areas. Usually, the depth of the Deepening about half the height of the flow channel. For that in the Flow channels flowing fluid acts a depression in the respective Flow channel as a kind of barrier; from the respective flow channel considered represents a introduced into the groove or groove so well a survey.
  • the arrangement of the recesses along the individual Flow channels to be chosen so that before each depression or barrier in the respective flow channel a recess in at least one adjacent Flow channel is located, which has an opening or a passage forms the next flow channel.
  • the barrier in the flow channel acts as a flow resistance and directs a portion of the fluid through the adjacent depression lying in the well next well, So next to the adjacent flow channel lying flow channel around. The other part of the fluid flows across the barrier through it Flow channel continues.
  • the depressions are preferably in adjacent ones Flow channels formed alternately in opposite directions, d. H. in a flow channel, the depressions are, for example directed down and in the adjacent flow channel are the wells directed upwards. This allows the rib to be made endless become.
  • the depressions further be provided with at least one slot through which the Pressure loss of the flowing fluid in the flow channels further reduced can be.
  • the flowing offers Fluid not only the possibility of passing through the wells formed by the wells Cross connections before serving as a barrier recess in the next flow channel or across the barrier along the Flow channel to flow, but there is also the possibility that the fluid through the slot directly into the adjacent flow channel can get.
  • the rib according to the invention can thus be a material exchange between the individual flow channels of one equipped with the rib Implement tube in a particularly advantageous manner. It will be the temperature differences in the individual flow channels flowing fluid greatly reduced by improved mixing.
  • One Another advantage of the rib according to the invention is given by the fact that regardless of the direction of flow in the pipe equal internal pressure losses of the flowing fluid occur. Furthermore, there is no unilaterally directed Cross flow, d. H. no different mass flow density in the respective flow channels. From a manufacturing point of view, the Rib can be manufactured as an endless element, which makes a cost-effective Production is ensured.
  • Fig. 1 shows a preferred application of the rib of the present invention in combination with a tube 2, which is particularly suitable for a fluid-flowed heat exchanger and / or condenser.
  • the tube 2 is formed as a flat tube, in particular as a welded flat tube.
  • the tube 2 has substantially a shell 4 and a rib 6 introduced therein, which extends at least in sections, preferably completely, in the tube longitudinal direction.
  • the rib 6 is formed in cross-section substantially wave-shaped, so that together with the outer shell 4, a tube with a plurality of substantially parallel flow channels 8 is formed. Each individual wave or groove (wave trough / wave peak) of the rib 6 acts as a flow channel.
  • the rib 6 furthermore has a plurality of recesses 10, through which at least one of the flow channels 8 is connected to at least one further, not directly adjacent flow channel 8.
  • the recesses 10 are formed in the rib 6 so that they do not completely block the individual flow channels 8, but only represent flow barriers that allow further flow of the fluid in the respective flow channel.
  • the rib 6 is received in the outer jacket 4 of the tube 2 such that the individual shafts or grooves are fluid-tightly separated from each other to the Form flow channels 8.
  • the rib 6 is received in the outer jacket 4 of the tube 2 such that the individual shafts or grooves are fluid-tightly separated from each other to the Form flow channels 8.
  • Through each of the recesses 10 are two flow channels 8 connected to each other by a intervening flow channel 8 are spaced from each other. This means that a recess 10 is a cross-connection between a and the next but one, adjacent flow channel 8 provides.
  • the recesses in adjacent flow channels are preferably alternately formed in opposite directions, d. H. in channel 8-1 all recesses 10-1 are formed down, while in adjacent channel 8-2 all recesses 10-2 formed upward are.
  • the recesses 10 may be in a repeating manner Pattern be formed in the rib 6.
  • the recesses are preferably formed approximately to half the height of the flow channels. No unilaterally directed cross flow through the recesses 10 is to obtain in the illustrated preferred embodiment, the rib with recesses 10 provided in meandering sequence, with the Guranderbahn in the longitudinal direction of the rib and in the transverse direction over a plurality of flow channels 10 extends.
  • Such Switzerlandbahn is shown in Fig. 1 as dashed Line 12 drawn. This effectively prevents the Mass flow density between the individual flow channels 8 strong varied.
  • FIG. 2 shows that already described with reference to FIG inventive rib 6 again without the outer shell 4.
  • the meandering sequence of the recesses 10th clearly visible.
  • two cross sections are taken along the Lines IV-IV and V-V through the rib 6 and two longitudinal sections along the Lines VI-VI and VII-VII are characterized by the rib 6.
  • the respective ones Sectional views of the rib 6 together with the outer jacket 4 are shown in FIGS. 4 to 7 shown.
  • the tube 2 described above with the rib 6 according to the invention is in particular for installation in a heat exchanger or condenser, in particular a multi-flow capacitor, suitable.
  • Rib 6 in the tube 2 can be the efficiency of a Heat exchanger and condenser significantly improve, in particular on the improved mixing of the by the individual Flow channels of flowing fluid is due.
  • the internal pressure loss of the fluid flowing through the pipe independently from the flow direction is the same, so that the tube in both directions can be installed.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Claims (20)

  1. Ailette (6) en particulier pour un tube (2) traversé par du fluide, qui est ondulée dans le sens transversal, des creux et des sommets d'ondulation voisins les uns des autres étant formés dans le sens longitudinal de l'ailette (6), des cavités (10) étant prévues dans les différents creux et sommets d'ondulation, à chaque fois deux creux d'ondulation étant reliés entre eux par une cavité (10), lesquels sont espacés les uns des autres par un sommet d'ondulation intercalé et à chaque fois deux sommets d'ondulation étant reliés entre eux, lesquels sont espacés l'un de l'autre par un creux d'ondulation intercalé, les cavités (10) étant réalisées dans des creux et des sommets d'ondulation voisins en alternance dans des directions opposées, caractérisé en ce que les cavités (10) sont prévues dans chaque creux et chaque sommet d'ondulation et les cavités (10) sont prévues dans une succession en forme de méandre, la trajectoire du méandre étant prévue dans le sens longitudinal et s'étendant dans le sens transversal sur plusieurs creux et sommets d'ondulation, plusieurs trajectoires de méandre étant disposées les unes à côté des autres vues dans le sens transversal.
  2. Ailette (6) selon la revendication 1, les cavités (10) étant disposées dans un modèle qui se répète.
  3. Ailette (6) selon l'une quelconque des revendications 1 ou 2, les cavités (10) s'étendant sensiblement jusqu'à la mi-hauteur de l'ondulation.
  4. Ailette (6) selon l'une quelconque des revendications 1 à 3, l'une ou plusieurs des cavités (10) présentant des fentes qui forment une liaison d'écoulement entre des creux et des sommets d'ondulation voisins.
  5. Tube (2) avec une ailette selon l'une quelconque des revendications 1 à 4.
  6. Tube (2), en particulier pour un échangeur de chaleur parcouru par un fluide et/ou un condensateur, avec au moins une ailette prévue dans l'enveloppe (4) du tube (2) et agencé au moins par section dans le sens longitudinal du tube selon l'une quelconque des revendications 1 à 4, moyennant quoi :
    a) l'ailette (6) a sensiblement une forme d'ondulation vue en coupe, plusieurs conduits d'écoulement (8) agencés sensiblement parallèlement étant réalisés dans le tube (2) ;
    b) des cavités (10) sont prévues dans l'ailette (6), cavités par lesquelles au moins l'un des conduits d'écoulement (8) est relié à au moins un autre conduit d'écoulement (8) non directement voisin ; et
    c) du fluide peut s'écouler à travers chacun des conduits d'écoulement (8) indépendamment des cavités (10).
  7. Tube (2) selon la revendication 5 ou 6, qui est conçu comme un tube plat, en particulier comme un tube plat soudé.
  8. Tube (2) selon l'une quelconque des revendications 5 à 7, l'ailette (6) s'étendant sensiblement le long de toute la longueur du tube (2).
  9. Tube (2) selon l'une quelconque des revendications 5 à 7, les cavités (10) étant disposées dans des conduits d'écoulement (8) voisins de telle sorte que, dans le sens d'écoulement du fluide et avant une cavité (10-1) dans un conduit d'écoulement (8-1), il est prévu à chaque fois une cavité (10-2) dans au moins un conduit d'écoulement (8-2) voisin, la cavité (10-1) prévue dans le conduit d'écoulement (8-1) servant de barrière d'écoulement pour la déviation d'une partie du fluide s'écoulant à l'intérieur dans le conduit d'écoulement (8-3) suivant et disposé à côté du conduit d'écoulement (8-2) voisin.
  10. Echangeur de chaleur comprenant au moins un tube (2) selon l'une quelconque des revendications 5 à 9.
  11. Condensateur comprenant au moins un tube (2) selon l'une quelconque des revendications 5 à 9.
  12. Condensateur multiflot comprenant au moins un tube (2) selon l'une quelconque des revendications 5 à 9.
  13. Utilisation d'un tube (2) selon l'une quelconque des revendications 5 à 9 pour condensateurs multiflot.
  14. Procédé pour la fabrication d'une ailette selon l'une quelconque des revendications 1 à 4, en particulier pour un tube (2) traversé par du fluide, comprenant les étapes suivantes :
    a) introduction d'une ondulation dans le sens transversal d'un substrat, des creux et des sommets d'ondulation voisins les uns des autres étant réalisés dans le sens longitudinal du substrat, et
    b) introduction de cavités (10) dans les différents creux et sommets d'ondulation, afin de relier des creux et des sommets d'ondulation voisins entre eux.
  15. Procédé selon la revendication 14, les cavités (10) étant réalisées selon l'étape b) dans un modèle qui se répète.
  16. Procédé selon l'une quelconque des revendications 14 ou 15, les cavités (10) étant réalisées selon l'étape b) sensiblement jusqu'à la mi-hauteur de l'ondulation.
  17. Procédé selon l'une quelconque des revendications 14 à 16, l'une ou plusieurs des cavités (10) étant pourvues de fentes qui forment une liaison d'écoulement entre des creux et des sommets d'ondulation voisins.
  18. Procédé pour la fabrication d'un tube (2), en particulier pour un échangeur de chaleur et/ou un condensateur traversé par du fluide, comprenant les étapes suivantes :
    a) mise à disposition d'une enveloppe de tube (4) ;
    b) mise à disposition d'au moins une ailette (6) agencée au moins par section dans le sens longitudinal du tube selon l'une quelconque des revendications 14 à 18 ; et
    c) introduction de l'ailette (6) dans l'enveloppe de tube (4), plusieurs conduits d'écoulement (8) agencés sensiblement parallèlement étant réalisés à travers les creux et sommets d'ondulation dans le tube (2), au moins l'un des conduits d'écoulement (8) étant en liaison fluidique avec un autre conduit d'écoulement (8) non directement voisin par au moins l'une des cavités (10) et du fluide pouvant circuler à travers chacun des conduits d'écoulement (8) indépendamment des cavités (10).
  19. Procédé selon la revendication 18, l'ailette (6) étant introduite dans l'enveloppe de tube (4) et l'enveloppe de tube (4) étant soudée ensuite.
  20. Procédé selon l'une quelconque des revendications 18 ou 19, la réalisation des cavités (10) s'effectuant dans des conduits d'écoulement (8) voisins de telle sorte que, dans le sens d'écoulement du fluide et avant une cavité (10-1) dans un conduit d'écoulement (8-1), à chaque fois une cavité (10-2) est prévue dans au moins un conduit d'écoulement (8-2) voisin du premier, la cavité prévue dans le conduit d'écoulement (8-1) servant de barrière d'écoulement pour la déviation du fluide s'écoulant à l'intérieur dans le conduit d'écoulement (8-3) suivant et situé à côté du conduit d'écoulement (8-2) voisin.
EP02006435A 2001-06-07 2002-03-22 Ailette, tube et échangeur de chaleur Expired - Lifetime EP1265046B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10127724 2001-06-07
DE10127724 2001-06-07

Publications (3)

Publication Number Publication Date
EP1265046A2 EP1265046A2 (fr) 2002-12-11
EP1265046A3 EP1265046A3 (fr) 2003-04-02
EP1265046B1 true EP1265046B1 (fr) 2005-11-23

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Family Applications (1)

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EP02006435A Expired - Lifetime EP1265046B1 (fr) 2001-06-07 2002-03-22 Ailette, tube et échangeur de chaleur

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EP (1) EP1265046B1 (fr)
AT (1) ATE310934T1 (fr)
DE (2) DE50205000D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1505360A4 (fr) 2002-05-10 2011-10-05 Usui Kokusai Sangyo Kk Tuyau de transfert de chaleur et echangeur de chaleur incorporant ledit tuyau de transfert de chaleur
DE10342241A1 (de) * 2003-09-11 2005-04-07 Behr Gmbh & Co. Kg Wärmetauscher
DE102019211969A1 (de) * 2019-08-09 2021-02-11 Mahle International Gmbh Flachrohr und Kondensator mit Flachrohr

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR606572A (fr) * 1925-02-24 1926-06-16 Dispositif radiateur échangeur de température pour voitures automobiles et autres applications
FR1537101A (fr) * 1967-07-11 1968-08-23 Chausson Usines Sa Organe perturbateur pour conduit d'échangeur thermique
CA1317772C (fr) * 1985-10-02 1993-05-18 Leon A. Guntly Condenseur a circuit d'ecoulement de faible diametre hydraulique
DE3615300A1 (de) * 1986-05-06 1987-11-12 Norsk Hydro As Kuehlrohre, sowie verfahren und vorrichtung zu deren herstellung
DE3915208A1 (de) * 1989-05-10 1990-11-15 Behr Gmbh & Co Turbulenzeinlage
JP3405997B2 (ja) * 1991-10-23 2003-05-12 株式会社デンソー インナーフィンおよびその製造方法
DE4403144C3 (de) * 1994-02-02 2002-05-29 Laengerer & Reich Gmbh & Co Plattenwärmeaustauscher
DE4404357C2 (de) * 1994-02-11 1998-05-20 Wieland Werke Ag Wärmeaustauschrohr zum Kondensieren von Dampf
DE19548495C2 (de) * 1995-12-22 2000-04-20 Valeo Klimatech Gmbh & Co Kg Wärmetauscherblock für Wärmetauscher für Kraftfahrzeuge und Verfahren zu dessen Herstellung
DE19813989A1 (de) * 1998-03-28 1999-09-30 Behr Gmbh & Co Wärmetauscher
US6213158B1 (en) * 1999-07-01 2001-04-10 Visteon Global Technologies, Inc. Flat turbulator for a tube and method of making same

Also Published As

Publication number Publication date
EP1265046A2 (fr) 2002-12-11
ATE310934T1 (de) 2005-12-15
EP1265046A3 (fr) 2003-04-02
DE50205000D1 (de) 2005-12-29
DE10213136A1 (de) 2002-12-12

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