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EP0547309A1 - Ailette ondulée pour un échangeur de chaleur à tubes plats - Google Patents

Ailette ondulée pour un échangeur de chaleur à tubes plats Download PDF

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Publication number
EP0547309A1
EP0547309A1 EP92116971A EP92116971A EP0547309A1 EP 0547309 A1 EP0547309 A1 EP 0547309A1 EP 92116971 A EP92116971 A EP 92116971A EP 92116971 A EP92116971 A EP 92116971A EP 0547309 A1 EP0547309 A1 EP 0547309A1
Authority
EP
European Patent Office
Prior art keywords
corrugated fin
gills
gill
stiffening bead
flat tubes
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.)
Granted
Application number
EP92116971A
Other languages
German (de)
English (en)
Other versions
EP0547309B1 (fr
Inventor
Josef Kreutzer
Kurt Mauch
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6447526&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0547309(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0547309A1 publication Critical patent/EP0547309A1/fr
Application granted granted Critical
Publication of EP0547309B1 publication Critical patent/EP0547309B1/fr
Anticipated expiration legal-status Critical
Revoked 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

Definitions

  • the invention relates to a corrugated fin for a flat tube heat exchanger according to the preamble of claim 1.
  • Such corrugated fins are known, e.g. by the applicant's water / air cooler.
  • corrugated fins are arranged between the flat tubes of the cooler and are soldered to the flat tubes.
  • these corrugated fins also have a supporting function in such a way that they prevent the flat tubes from bulging when they are subjected to internal pressure. Since the corrugated fins should be made as thin as possible with a view to a high heat transfer performance and a low weight, there is a risk that these corrugated fins will buckle under the pressure of the flat tubes, which tend to "inflate". This problem was also described in the earlier application P 40 31 577 by the applicant and was solved there by other means, namely so-called support means between the flat tubes in the area of the tube sheets.
  • This object is solved by the characterizing features of claim 1, i.e. by the arrangement of a stiffening bead that runs transversely to the long sides of the flat tubes.
  • This stiffening bead achieves a significant stiffening of the corrugated fin and thus prevents the flat tube from bulging when subjected to internal pressure and thus causing the corrugated fin to buckle. Due to the favorable arrangement and design of this stiffening bead, there has been no increase in the pressure drop in the direction of ventilation flow and therefore also no loss of performance; the weight and thickness of the rib were not changed.
  • the shape or shape of the bead alone resulted in an increase in strength, i.e. an increase in kink resistance in such a way that the flat tubes could be subjected to a higher internal pressure than was possible without such a stiffening bead.
  • the stiffening bead is roof-shaped, it extends over the entire width of the corrugated fin, that is to say transversely to the air flow direction, and is arranged in the central region of the fin depth, that is to say seen in the air flow direction, where it has the greatest effect, since there the greatest stress occurs due to the bulging of the flat tubes.
  • a corrugated fin 1 is shown, which is located between dashed flat tubes 2 of a heat exchanger, not shown, which is preferably the water / air cooler for a motor vehicle driven by an internal combustion engine.
  • the flat tubes 2 are flowed through by coolant, which can be under a pressure of several bars during operation.
  • the corrugated fin 1 is acted upon by ambient air and thus dissipates the heat of the coolant to the environment.
  • the corrugated fin 1 is soldered to the outer wall of the flat tubes 2 in a manner not shown in order to ensure an improved heat transfer.
  • the corrugated fin itself is approximately zigzag or accordion-shaped and on the one hand has flat regions 3 and rounded regions 4 arranged at an angle to one another, on which the corrugated fin is soldered to the flat tubes 2.
  • Fig. 2 the arrangement of the corrugated fin 1 between the flat tubes 2 is shown schematically in another view, namely in the direction of the tube axes.
  • the two cutting planes CC and DD are also drawn in there. Accordingly, Fig. 1 is a section in the plane DD.
  • Fig. 3 shows a section in the plane CC through the corrugated fin 1, wherein it can be seen that the corrugated fin has a plurality of gills 5 seen in the air flow direction, the gills 5 'of the first half of the ribs having a gill angle ⁇ and the ribs 5''of the second rib half also have a gill angle ⁇ , which is opposite to the angle ⁇ , but the same amount.
  • the angle ⁇ is the supplementary angle to 180 °.
  • a stiffening bead 6 is provided according to the invention, which is shown in more detail in FIG. 5 and is described in more detail below.
  • the corrugated fin is turned over, as shown in detail Z, ie in FIG. 4.
  • This envelope or hem of the corrugated rib on its two edges also achieves a certain stiffening effect and stabilization of the edge.
  • FIG. 5 shows the actual invention, ie the stiffening bead 6 in more detail, only the detail X from FIG. 3 with an adjacent gill 5 ′ and 5 ′′ being shown here.
  • the air flow therefore takes place in the direction of the arrow in the drawing from left to right, but it can equally well take place from right to left, since the corrugated fin is constructed symmetrically with respect to the central axis.
  • This is shown by the gill angles ⁇ , which are opposite but the same amount, the angle ⁇ being approximately in the range of 30 °.
  • the angle ⁇ is the supplementary angle to 180 °.
  • the stiffening bead 6 is arranged, which in turn is roof-shaped, ie two roof-shaped has mutually inclined surfaces 7 and 8, which enclose an angle ⁇ , which can be in the range of approximately 180 ° -2 ⁇ .
  • ⁇ which can be in the range of approximately 180 ° -2 ⁇ .
  • this roof-shaped design practically causes no increase in pressure loss in the air flow direction.
  • the "ridge" of the roof-shaped stiffening bead 6 rises only insignificantly, ie with the amount h over the plane of the rib surface.
  • the thickness of the rib is marked with s and is approximately 0.1 mm, the rib preferably being made from an aluminum alloy.
  • the height h is approximately 1 to 2.5 times the rib thickness s.
  • the stiffening bead 6 is produced by a simple embossing process during the manufacture of the rib as it passes through the fin rollers and thus requires no special effort.
  • the mode of operation of the stiffening bead becomes particularly clear when one takes a look at FIG. 2, where the stiffening bead is located in the area of the sectional plane D-D. If, due to the application of internal pressure, the flat tubes tend to inflate in the middle area, the stiffening bead 6 opposes this deformation process with increased resistance in this area, so that inflation of the tubes and an associated buckling of the corrugated fin is avoided. With this simple measure, which has practically no disadvantages, the supporting effect of the corrugated fin can be increased and the buckling of the corrugated fin can thus be relocated to a region of higher internal pressures in the flat tubes.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP92116971A 1991-12-19 1992-10-05 Ailette ondulée pour un échangeur de chaleur à tubes plats Revoked EP0547309B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4142019A DE4142019A1 (de) 1991-12-19 1991-12-19 Wellrippe fuer flachrohrwaermetauscher
DE4142019 1991-12-19

Publications (2)

Publication Number Publication Date
EP0547309A1 true EP0547309A1 (fr) 1993-06-23
EP0547309B1 EP0547309B1 (fr) 1996-05-29

Family

ID=6447526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116971A Revoked EP0547309B1 (fr) 1991-12-19 1992-10-05 Ailette ondulée pour un échangeur de chaleur à tubes plats

Country Status (3)

Country Link
US (1) US5361829A (fr)
EP (1) EP0547309B1 (fr)
DE (2) DE4142019A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998050746A1 (fr) * 1997-05-07 1998-11-12 Valeo Klimatechnik Gmbh & Co. Kg Lamelles en zigzague servant de nervures pour echangeurs de chaleur a tubes aplatis pour vehicules a moteur
EP0898138A3 (fr) * 1997-08-22 2000-05-10 General Motors Corporation Ailette d'échangeur de chaleur comportant des fentes et résistante à la compression
EP1028303A1 (fr) 1999-02-13 2000-08-16 Nederlandse Radiateuren Fabriek B.V. Ailette pour échangeur de chaleur
DE102004060795A1 (de) * 2004-12-17 2006-06-29 Modine Manufacturing Co., Racine Wärmetauschrippe und Wärmetauscher
DE202009014599U1 (de) 2009-10-29 2010-02-18 Behr Gmbh & Co. Kg Wärmeübertrager

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2180050A1 (fr) * 1996-04-04 1997-10-05 Matthew K. Harris Ailettes encochees pour echangeur de chaleur d'automobile
US6729388B2 (en) * 2000-01-28 2004-05-04 Behr Gmbh & Co. Charge air cooler, especially for motor vehicles
FR2824895B1 (fr) * 2001-05-18 2005-12-16 Air Liquide Ailette ondulee a persiennes pour echangeur de chaleur a plaques, et echangeur a plaques muni de telles ailettes
US6702190B1 (en) 2001-07-02 2004-03-09 Arvin Technologies, Inc. Heat transfer system for a vehicle
DE10235038A1 (de) * 2002-07-31 2004-02-12 Behr Gmbh & Co. Flachrohr-Wärmeübertrager
US20050045314A1 (en) * 2004-08-26 2005-03-03 Valeo, Inc. Aluminum heat exchanger and method of making thereof
DE10343905A1 (de) * 2003-09-19 2005-06-09 Behr Gmbh & Co. Kg Gelötetes Wärmeübertragernetz
DE102004001306A1 (de) * 2004-01-07 2005-08-04 Behr Gmbh & Co. Kg Wärmeübertrager
DE102004012427A1 (de) * 2004-03-13 2005-09-29 Modine Manufacturing Co., Racine Wärmetauschernetz und Wellrippe
FR2868521B1 (fr) * 2004-03-30 2009-03-13 Valeo Thermique Moteur Sas Ailettes pour echangeur de chaleur comportant des lamelles decoupees formant deflecteur de flux
US20070039723A1 (en) * 2005-08-18 2007-02-22 Alex Latcau Header extension to retain core cover and maintain constant compression on outer fins
US20070246202A1 (en) * 2006-04-25 2007-10-25 Yu Wen F Louvered fin for heat exchanger
US7866042B2 (en) * 2007-01-12 2011-01-11 Centrum Equities Acquisition, Llc Method for producing a split louver heat exchanger fin
WO2008085279A1 (fr) 2007-01-12 2008-07-17 Proliance International, Inc. Ailette d'échangeur de chaleur
US8408283B2 (en) * 2007-06-28 2013-04-02 Centrum Equities Acquisition, Llc Heat exchanger fin with ribbed hem
FR2923002B1 (fr) * 2007-10-31 2015-12-11 Valeo Systemes Thermiques Tube pour echangeur thermique
EP3015297B2 (fr) * 2014-10-29 2022-09-14 Carl Freudenberg KG Système doté d'un élément de filtre
EP3282213B1 (fr) * 2016-08-09 2019-05-08 Linde Aktiengesellschaft Procede de determination de la resistance d'un echangeur a faisceaux tubulaires et procede de fabrication
JP2018132247A (ja) * 2017-02-15 2018-08-23 富士電機株式会社 自動販売機

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250325A (en) * 1963-02-19 1966-05-10 Ford Motor Co Heat exchange device
US3993125A (en) * 1975-11-28 1976-11-23 Ford Motor Company Heat exchange device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1868830U (de) * 1962-11-29 1963-03-14 Georg Plange Fa Heizelement fuer sockelkonvektoren.
US3265127A (en) * 1963-10-21 1966-08-09 Ford Motor Co Heat exchange element
US3298432A (en) * 1964-05-22 1967-01-17 Przyborowski Stanislaus Radiators
US4535839A (en) * 1982-12-20 1985-08-20 General Motors Corporation Heat exchanger with convoluted air center strip
US4693307A (en) * 1985-09-16 1987-09-15 General Motors Corporation Tube and fin heat exchanger with hybrid heat transfer fin arrangement
DE4031577A1 (de) * 1990-10-05 1992-04-09 Behr Gmbh & Co Waermetauscher

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250325A (en) * 1963-02-19 1966-05-10 Ford Motor Co Heat exchange device
US3993125A (en) * 1975-11-28 1976-11-23 Ford Motor Company Heat exchange device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998050746A1 (fr) * 1997-05-07 1998-11-12 Valeo Klimatechnik Gmbh & Co. Kg Lamelles en zigzague servant de nervures pour echangeurs de chaleur a tubes aplatis pour vehicules a moteur
EP0898138A3 (fr) * 1997-08-22 2000-05-10 General Motors Corporation Ailette d'échangeur de chaleur comportant des fentes et résistante à la compression
EP1028303A1 (fr) 1999-02-13 2000-08-16 Nederlandse Radiateuren Fabriek B.V. Ailette pour échangeur de chaleur
DE102004060795A1 (de) * 2004-12-17 2006-06-29 Modine Manufacturing Co., Racine Wärmetauschrippe und Wärmetauscher
DE202009014599U1 (de) 2009-10-29 2010-02-18 Behr Gmbh & Co. Kg Wärmeübertrager

Also Published As

Publication number Publication date
DE4142019A1 (de) 1993-06-24
US5361829A (en) 1994-11-08
DE59206417D1 (de) 1996-07-04
EP0547309B1 (fr) 1996-05-29

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