EP1567820B1 - Échangeur thermique - Google Patents

Échangeur thermique Download PDF

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Publication number
EP1567820B1
EP1567820B1 EP03779839A EP03779839A EP1567820B1 EP 1567820 B1 EP1567820 B1 EP 1567820B1 EP 03779839 A EP03779839 A EP 03779839A EP 03779839 A EP03779839 A EP 03779839A EP 1567820 B1 EP1567820 B1 EP 1567820B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger according
cover
flat tubes
longitudinal
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
EP03779839A
Other languages
German (de)
English (en)
Other versions
EP1567820A1 (fr
Inventor
Uwe FÖRSTER
Kurt Molt
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 EP1567820A1 publication Critical patent/EP1567820A1/fr
Application granted granted Critical
Publication of EP1567820B1 publication Critical patent/EP1567820B1/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
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0073—Gas coolers

Definitions

  • the invention relates to a heat exchanger, in particular a gas cooler for CO2 as a refrigerant, according to the preamble of claim 1.
  • Heat exchangers for air conditioners with R134a as refrigerant consist of a heat exchanger network of flat tubes as well as collector tubes of circular cross-section arranged on both sides of the grid. Such constructions were sufficient in strength for the pressures occurring in a condenser. In modern refrigerants such as CO2, however, occur significantly higher pressures that can no longer be overcome with the conventional Wäremübertragerbau und.
  • the manifold is in two parts, d: h. made of a bottom and a lid consisting of a bent sheet metal strip in the form of, for example, a W and forming with the bottom two approximately circular flow channels.
  • the lid and the bottom as well as the flat tubes inserted into the bottom are soldered together pressure-tight.
  • a longitudinal partition of the lid / bottom acts as a tie rod, since it is soldered to the bottom / lid.
  • This construction of the header tank is inexpensive, since no expensive tools for bending and folding the lid and the floor are needed.
  • the bottom or lid is formed with lobes that engage behind the lid or the bottom edge and thus cause a pre-fixing of the bottom and lid before the soldering process. So it does not require any additional soldering to solder the heat exchanger.
  • the flaps are arranged between the flat tubes.
  • the middle web or the longitudinal dividing wall has notches in the region of the flat tube ends, which allow the refrigerant to flow out of the flat tubes and an overflow of the refrigerant from one longitudinal channel into the other. This results in various possibilities for flow guidance of the refrigerant, in particular in connection with transverse dividing walls.
  • the bottom is concave and has a bulge facing outwardly from the interior of the header tank.
  • the bottom may be convex and have a bulge facing inwardly from the exterior of the header tank. It is also advantageous if on the inside of the edges of the lid or bottom a paragraph is provided as an attachment for the bottom or lid. This results in the assembly of lids and floor a defined contact surface.
  • the number of longitudinal channels of the header tank can be multiplied by having the cross-sectional shape of the cover in a WW shape or a multiple W shape. As a result, two additional longitudinal channels are created in each case, that is, if necessary, a larger volume for the refrigerant is provided. It may also be advantageous to provide two or more flat rows of tubes instead of just one row of flat tubes.
  • Fig. 1 shows a partial view of a condenser or gas cooler 1, as he can preferably find use in an operated with the refrigerant CO2 air conditioning of a motor vehicle.
  • the gas cooler 1 has - as is known - a heat exchanger network, of which only flat tubes 2 are partially shown here, which are taken with their tube ends 2a of a bottom 3 of a header 4. Between the flat tubes 2 are not shown corrugated fins to increase the air-side heat exchange surface.
  • the manifold 4 further consists of a W or. M-shaped lid 5, which engages behind the bottom 3 with lugs or tabs 6 arranged on the edge side.
  • the W- or M-shaped lid is formed such that a longitudinal partition wall is formed such that portions of the lid itself touch and soldered together. Thus, a double-walled partition is formed.
  • Fig. 2 shows a section through the gas cooler 1 according to Fig. 1 , In parallel between two flat tubes 2. It can be clearly seen in this cross section, the W- or M-shape of the bent from a sheet metal strip cover 5, the two outer edge regions 7, 8 and formed as a fold center web 9 which has a in Forming longitudinal direction of the collecting tank 4 extending longitudinal partition and thus the collection box 4 divided into two longitudinal channels 10, 11.
  • the bottom 3 is concave, ie arched outwards.
  • the central web 9 has a web 12, which rests on the entire surface of the bottom 3 and is soldered thereto to form a tie rod.
  • the bottom 3, which projects slightly beyond the narrow sides of the flat tubes 2 in each case, is engaged behind by tabs 6, 13, whereby a fixation of the cover 5 and the bottom 3 is effected.
  • Fig. 3 shows a section along the line III-III in Fig. 2 , wherein the flat tubes 2 are hatched in a simplified representation.
  • the flat tubes 2 have a multi-channel cross-section which is produced by extrusion.
  • the flat tube ends 2a are received in corresponding openings 3a of the bottom 3 and project into the interior of the longitudinal channels 10, 11.
  • the longitudinal partition wall or the central web 9 is provided with arched notches 14, so that its U-shaped gap 15 remains around the flat tube ends 2a around.
  • refrigerant can escape from the flat tubes 2 through this gap 15, and on the other hand, refrigerant can flow over from one longitudinal channel 10 into the other longitudinal channel 11 or vice versa.
  • the gaps 15 thus form overflow openings between the two longitudinal channels 10, 11.
  • Fig. 4 shows a second embodiment of a gas cooler 16 with a W-shaped lid 17 and a flat bottom 18th
  • Fig. 5 shows a longitudinal section through the gas cooler 16 according to Fig. 4
  • the lid 17 has two edges 19, 20, on the inside paragraphs 21, 22 are formed, which serve as an abutment for the bottom 18.
  • the bottom 18 of tabs 23, 24 is engaged behind, projecting from the edges 19, 20.
  • Fig. 6 and Fig. 7 show a third embodiment of a gas cooler 25 with two rows of flat tubes 26, the ends of which are received by a flat bottom 27 of a collecting tank 28.
  • the latter has a bent and folded from a metal strip cover 29, which has the shape of a double W, ie three central webs 30, which divide the collecting box 28 into four longitudinal channels 31.
  • this cover 29 has paragraphs 32 for the installation of the bottom 27, which is also fixed by tabs 33.

Landscapes

  • 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)
  • Separation By Low-Temperature Treatments (AREA)
  • Power Steering Mechanism (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Claims (13)

  1. Echangeur de chaleur (1, 16, 25) comprenant au moins un bac collecteur (4, 28) en deux parties et un réseau d'échangeurs de chaleur se composant, de préférence, de tubes plats (2, 26) et d'ailettes ondulées, où le bac collecteur (4, 28) au moins au nombre de un se compose d'un fond (3, 18, 27) et d'un couvercle (5, 17, 29), et le fond (3, 18, 27) présente des ouvertures pour le logement d'extrémités (2a) des tubes plats (2, 26), le fond (3, 18, 27) étant relié au couvercle (5, 17, 29) de façon fluidiquement étanche, où le bac collecteur (4, 28) présente au moins une paroi de séparation longitudinale (9, 30) servant à la formation d'au moins deux conduits longitudinaux (10, 11, 31), où la paroi de séparation longitudinale (9, 30), au moins au nombre de un, est brasée avec le fond (3, 18, 27), et la paroi de séparation longitudinale (9, 30), au moins au nombre de un, présente des parties évidées ou mortaisées (14) dans lesquelles des extrémités de tubes (2a) s'engagent ou pénètrent au moins partiellement ou bien dans lesquelles ne pénètre aucune extrémité de tube plat,
    caractérisé en ce que le couvercle (5, 17, 29) est configuré de manière telle, que la paroi de séparation longitudinale (9, 30), au moins au nombre de un, soit formée par deux zones du couvercle (5, 17, 29) orientées sensiblement de façon parallèle, où les deux zones orientées sensiblement de façon parallèle se touchent et sont brasées l'une à l'autre, où la paroi de séparation longitudinale (9, 30), au moins au nombre de un, est configurée comme une paroi en tôle recourbée ou pliée, et le fond (3, 18, 27) ou le couvercle (5, 17, 29) est configuré en comportant des languettes (6, 13, 23, 24, 33) qui s'engagent, au bord, dans le couvercle (5, 17, 29) ou dans le fond (3, 18, 27), les languettes (6, 13, 23, 24, 33) étant disposées entre les tubes plats (2, 26).
  2. Echangeur de chaleur selon la revendication précédente, caractérisé en ce qu'une paroi de séparation longitudinale (9, 30) est configurée comme une pliure.
  3. Echangeur de chaleur selon l'une ou l'autre des revendications précédentes, caractérisé en ce que le couvercle (5, 17, 29) présente une, deux, trois ou une pluralité de parois de séparation (9, 30).
  4. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que le fond (3) est configuré de façon concave et présente une courbure qui, en partant de l'intérieur du bac collecteur (4), pointe vers l'extérieur.
  5. Echangeur de chaleur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le fond est configuré de façon convexe et présente une courbure qui, en partant de l'extérieur du bac collecteur, pointe vers l'intérieur.
  6. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que des zones libres, comme par exemple un intervalle (15), sont laissées entre les parties mortaisées (14) et les extrémités (2a) des tubes plats.
  7. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les zones libres sont configurées comme un intervalle (15) en forme de U.
  8. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les zones libres sont configurées partiellement comme des butées pour les tubes (2, 26).
  9. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les bords (19, 20) du couvercle (17, 29) ou du fond présentent, sur le côté intérieur, des épaulements (21, 22, 32) s'étendant dans le sens longitudinal, épaulements sur lesquels s'appuie le fond (18, 27) ou le couvercle.
  10. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que le couvercle (29) présente d'autres parois de séparation longitudinales (30) servant à la formation d'autres conduits longitudinaux (31).
  11. Echangeur de chaleur selon la revendication 10, caractérisé en ce que les autres parois de séparation longitudinales ou des parois de séparation longitudinales individuelles ne présentent aucune partie évidée ou mortaisée.
  12. Echangeur de chaleur selon la revendication 10, caractérisé en ce que les autres parois de séparation longitudinales ou des parois de séparation longitudinales individuelles présentent des parties évidées ou mortaisées qui, cependant, ne servent pas de trop-plein pour un fluide.
  13. Echangeur de chaleur selon l'une quelconque des revendications précédentes, caractérisé en ce que les tubes plats (26) sont disposés sur deux ou sur plusieurs rangées.
EP03779839A 2002-11-27 2003-11-03 Échangeur thermique Expired - Lifetime EP1567820B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10255487A DE10255487A1 (de) 2002-11-27 2002-11-27 Wärmeübertrager
DE10255487 2002-11-27
PCT/EP2003/012227 WO2004048875A1 (fr) 2002-11-27 2003-11-03 Échangeur thermique

Publications (2)

Publication Number Publication Date
EP1567820A1 EP1567820A1 (fr) 2005-08-31
EP1567820B1 true EP1567820B1 (fr) 2008-04-23

Family

ID=32308795

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03779839A Expired - Lifetime EP1567820B1 (fr) 2002-11-27 2003-11-03 Échangeur thermique

Country Status (6)

Country Link
US (1) US7121332B2 (fr)
EP (1) EP1567820B1 (fr)
AT (1) ATE393369T1 (fr)
AU (1) AU2003287989A1 (fr)
DE (2) DE10255487A1 (fr)
WO (1) WO2004048875A1 (fr)

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US20080185134A1 (en) * 2007-02-07 2008-08-07 Hoehne Mark R Two-piece header/manifold construction for a heat exchanger having flattened tubes
DE102008051422A1 (de) * 2008-10-11 2010-04-15 Modine Manufacturing Co., Racine Ganz-Metall-Wärmetauscher und Verfahren
DE102009023954A1 (de) * 2009-06-04 2010-12-09 Behr Gmbh & Co. Kg Sammelrohr für einen Kondensator
DE102013208396A1 (de) 2013-05-07 2014-11-13 Behr Gmbh & Co. Kg Wärmeübertrager
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Also Published As

Publication number Publication date
EP1567820A1 (fr) 2005-08-31
DE50309713D1 (de) 2008-06-05
ATE393369T1 (de) 2008-05-15
DE10255487A1 (de) 2004-06-09
WO2004048875A1 (fr) 2004-06-10
US7121332B2 (en) 2006-10-17
AU2003287989A1 (en) 2004-06-18
US20050230093A1 (en) 2005-10-20

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