EP1613916A2 - Echangeur de chaleur - Google Patents

Echangeur de chaleur

Info

Publication number
EP1613916A2
EP1613916A2 EP04722294A EP04722294A EP1613916A2 EP 1613916 A2 EP1613916 A2 EP 1613916A2 EP 04722294 A EP04722294 A EP 04722294A EP 04722294 A EP04722294 A EP 04722294A EP 1613916 A2 EP1613916 A2 EP 1613916A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger according
cover
elevations
depressions
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
EP04722294A
Other languages
German (de)
English (en)
Other versions
EP1613916B1 (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 EP1613916A2 publication Critical patent/EP1613916A2/fr
Application granted granted Critical
Publication of EP1613916B1 publication Critical patent/EP1613916B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing

Definitions

  • the invention relates to a heat exchanger, in particular according to the preamble of claim 1.
  • Heat exchangers for air conditioning systems with R134a as the refrigerant consist of a heat exchanger network with flat tubes and corrugated fins and collecting tubes arranged on both sides of the network, preferably with a circular cross section - as known from DE-A 42 38 853 by the applicant.
  • a heat exchanger network with flat tubes and corrugated fins and collecting tubes arranged on both sides of the network, preferably with a circular cross section - as known from DE-A 42 38 853 by the applicant.
  • Extruded manifolds with increased wall thickness have therefore been proposed in WO 98/51983, a manifold consisting of four flow channels arranged next to one another with a circular cross section. The production of such an extruded manifold is expensive because of the tools required for it.
  • Another type of manifold for high internal pressures has been proposed in DE-A 199 06 289, the
  • Collector tube is composed of two or three extruded or pressed parts and has two longitudinal channels with a circular cross section.
  • this known manifold is made of extruded parts, the relatively high tool costs are disadvantageous; if the known manifold is composed of pressed parts, the appears
  • BESTATIGUNGSKOPIE Shape still imperfect, ie not adapted to the expected loads due to the high internal pressure.
  • FIG. 1 Another design for the header box of a conventional capacitor was known from US-A 5,172,761.
  • the condenser has flat tubes which are received in a slot-shaped openings by an essentially flat, but profiled tube sheet.
  • An essentially flat, but also profiled cover part is connected to the tube sheet.
  • Bottom and lid form individual chambers, which are divided by transverse walls, in which the refrigerant flows or is deflected.
  • this shape of a collecting box does not appear to be suitable for higher pressures, such as those that occur in particular in a CO2 refrigerant circuit.
  • the collection box is made from two stamped or bent sheet metal plates, ie there is no machining. This results in low manufacturing costs. Furthermore, the stamping process of the sheet results in work hardening, which increases the internal pressure resistance of the collecting container.
  • longitudinal partition walls with contact surfaces and transverse channels are formed both on the cover and on the base, the contact surfaces being arranged in each case between the tubes or the openings in the base. When joining the cover and base, the contact areas lie flat on top of each other and thus form a large number of soldering areas in the area of the longitudinal partition.
  • Bottom and lid are thus soldered on the one hand in the edge area and on the other hand in the area of the dividing wall, where the soldered contact surfaces form "tie rods" with respect to the internal pressure occurring in the collecting container.
  • the end faces of the longitudinal channels can be closed, for example, by plugs, covers or end walls and, if necessary, then soldered, or they are provided with refrigerant connections.
  • the longitudinal channels can also be sealed at the end by a corresponding deformation of the cover and / or base by soldering them to one another.
  • the flat tube ends, which protrude into the floor or collecting box, are bridged in the area of the longitudinal partition by the arch-shaped transverse channels, so that the refrigerant can escape from the flat tubes over the entire cross-sectional area or enter the flat tubes.
  • the contact surfaces on the inside of the collecting box are designed as elevations and on the outside of the collecting box as depressions or impressions, with depressions or impressions and elevations or expressions corresponding in their position. This production and formation of the elevations on the inside ensures a flat contact surface and thus a secure and firm soldering.
  • the transverse channels that is to say the connections from one longitudinal chamber to another, are designed as depressions on the inside and correspondingly as elevations on the outside.
  • the shape of the transverse channels on the inside ensures free outlet cross-sections of the flat tubes and good solderability of the flat tube ends on the inside due to the formation of a meniscus.
  • the wall thickness in the region of the longitudinal partition walls of the base and lid is approximately constant, and the elevations and depressions are preferably formed symmetrically to a central division plane, a trapezoidal contour being shown in a longitudinal section.
  • the bottom (or also the lid) has marginal ridges or rags in the edge region.
  • the cover and base are thus fixed over the strips or rags before they are soldered together with the entire heat exchanger.
  • three or more longitudinal chambers with two or more longitudinal partition walls are provided, the longitudinal partition walls being designed analogously to the single longitudinal partition wall described above.
  • the collecting container according to the invention can thus also be used for greater flat tube depths without the longitudinal channels taking on an excessively large diameter. This results in advantages in terms of installation space and the strength of the collecting container.
  • FIG. 1 is a partial perspective view of a gas cooler
  • FIG. 2 shows a side view of the gas cooler according to FIG. 1,
  • FIG. 3 shows a partial view of the gas cooler according to FIG. 1 from the front
  • FIG. 5 is an enlarged section according to FIG. 4, but without a flat tube
  • FIG. 6 shows a section along the line VI-VI in FIG. 2
  • 7 shows a cross section through the bottom of the collecting tank
  • FIG. 7a is a bottom view of the collecting box according to FIG. 7,
  • FIG. 7b is a top view of the collecting tank according to FIG. 7,
  • FIG. 8a is a bottom view of the lid of FIG. 8,
  • FIG. 8b is a top view of the lid of FIG. 8,
  • Fig. 9 shows another embodiment of the invention with a collecting box with three longitudinal channels and
  • FIG. 10 shows a cross section through the collecting tank according to FIG. 9, without a flat tube
  • Fig. 11 shows a cross section through the header box with flat tube
  • Fig. 12 shows a cross section through the collecting box with collecting box.
  • FIG. 1 shows a heat exchanger designed as a gas cooler 1 with a collecting tank 2 and flat tubes 3 opening into the latter, between which corrugated fins (not shown) can be arranged.
  • a gas cooler is used in refrigerant circuits operated with CO2 as the refrigerant for motor vehicle air conditioning systems, but can also generally be used as a pressure-resistant heat exchanger.
  • Fig. 2 shows a side view of the gas cooler 1 with the header box 2, which is composed of a bottom 4 and a cover 5.
  • Bottom 4 and lid 5 are approximately W-shaped and arranged symmetrically to a parting plane 6, the bottom 4 having edge strips 7 which grip around and fix the lid 5 laterally.
  • Floor 4 and decorative angle 5 form two longitudinal channels 8, 9, both of which essentially have a circular cross section.
  • the flat tubes 3 are picked up from the bottom 4 and project with their flat tube ends 3a into the longitudinal channels 8, 9 approximately up to the dividing plane 6.
  • Bottom 4 and lid 5 are cut out of a sheet metal plate (not shown) and shaped or embossed into the shape shown, ie produced without cutting. After the joining of the individual parts such as flat tubes 3, bottom 4 and cover 5, the entire gas cooler 1, which may also have a further collecting box, not shown, is soldered.
  • Fig. 3 shows a front view of a section of the gas cooler 1, d. H. with a view of the narrow sides of the flat tubes 3 and the continuous strip 7 of the bottom 4.
  • individual tabs (not shown) can also be provided, since these essentially only have a fixing function for the subsequent soldering process.
  • corrugated fins can be arranged between the flat tubes 3, over which ambient air flows in the direction perpendicular to the plane of the drawing.
  • Fig. 4 shows a section along the line IV-IV in Fig. 3, i. H. a cross section through the collecting box 2 with bottom 4, which receives a (not cut) flat tube 3.
  • a transverse channel 10, which forms a passage, is arranged between the two longitudinal channels 8, 9.
  • Fig. 5 shows the collecting box 2 in an enlarged view without the flat tube 3 with a slot-shaped opening 11 in the bottom 4 for receiving the flat tubes 3.
  • the collecting box 2 has a division level 6, with the exception of the bottom 4 and lid 5 the edge strips 7 and the receiving openings 11 are approximately symmetrical, in particular in the region of a longitudinal partition wall separating the two longitudinal channels, which is formed from a longitudinal partition wall region 12 of the base 4 and from a longitudinal partition wall region 13 of the cover 5, which form superimposed contact surfaces 14, 15.
  • the superimposed contact surfaces 14, 15 are each arranged between the flat tubes 3 and are therefore behind the plane of the drawing in which the Cross channel 10 and - symmetrically to this - another cross channel 16 is located. Both cross channels 10, 16 complement each other to form a common passage cross section.
  • Fig. 6 shows a section along the line VI-VI in Fig. 2, i. H. in the region of the longitudinal partition wall or the two longitudinal partition wall regions 12, 13. The latter abut one another in the region of the parting plane 6 with their contact surfaces 14, 15, which are each arranged between the flat tubes 3.
  • the contact surfaces 14, 15 in the base 4 and cover 5 are each formed as elevations or forms, each of which is opposed by a recess 17 in the cover or a recess 18 in the base.
  • the transverse channels 10 in the cover 5 are formed by depressions on the inside, which elevations 19 in the cover are opposite;
  • the transverse channels 16 in the floor 4 are opposite elevations 20 on the outside of the floor.
  • the elevations and depressions result in a trapezoidal meandering profile with an approximately constant wall thickness s for the longitudinal dividing wall regions 12, 13 of the bottom and cover. Since the elevations and depressions - as already mentioned - are produced by embossing, this results in a favorable fiber orientation and high work hardening, which is particularly advantageous for absorbing tensile forces in this area.
  • FIG. 7 shows a cross section through the base 4, FIG. 7a shows a view of the base 4 from below, and FIG. 7b shows a view of the base 4 from above.
  • the contact surfaces 14 can be seen, which are approximately rectangular. These contact surfaces 14 lie on the outside of the bottom 4 in FIG. 7a, the depressions 18. The elevations on the outside of the floor are designated 20.
  • FIG. 8 shows the cover 5 in cross section
  • FIG. 8a shows a view of the cover 5 from below
  • FIG. 8b shows a view of the cover 5 from above, ie the inside thereof.
  • the embossments 17 can be seen as rectangular surfaces, which are marked on the inside of the cover 5 (FIG. 8b)
  • Contact surfaces 15 are opposite as surveys.
  • the transverse channels 10 extend between the elevations 15.
  • the contact surfaces 14 (FIG. 7b) and the contact surfaces 15 (FIG. 8b) correspond approximately in size and position, lie on one another after the base 4 and cover 5 have been joined, and are soldered to one another in this area.
  • the sheet metal plates for base 4 and cover 5 serving as the starting material can be solder-plated on both sides.
  • the base material of the sheet metal blanks as well as the flat tubes 3 and possibly the corrugated fins is an aluminum alloy or various aluminum alloys.
  • FIG. 9 shows a further exemplary embodiment of the invention, specifically a gas cooler 21, with a collecting box 22 and a row of flat tubes 23, which are received at the ends by the collecting box 22.
  • the collecting box 22 shows the collecting box 22 in cross section without a flat tube 23.
  • the collecting box 22 has three longitudinal channels 24, 25, 26, which are formed by a base 27 and a cover 28.
  • a continuous slot 29 with the dimensions of the ends of the flat tubes 23 is introduced in the base 27, preferably by stamping.
  • the longitudinal channels 24, 25, 26 are formed by two longitudinal partition walls 30, 31, which are formed analogously to the longitudinal partition wall described above, consisting of longitudinal partition wall regions of the bottom and cover.
  • Cross channels 32 and 33 are also provided through depressions.
  • the illustration shows that the collecting box according to the invention can be designed with any number of longitudinal channels, the contact surfaces according to the invention being provided between two adjacent longitudinal channels to form tie rods.
  • FIG. 11 shows a section of a manifold of a gas cooler 100 with the manifold 102, which is also called a manifold.
  • Collection box is designed in two parts and is composed of a bottom 104 and a lid 105.
  • the lid 105 is inserted into the floor. This is done in such a way that the side arms of the base engage around the cover, so that side surfaces of the cover rest against the inner surfaces of the base.
  • Tabs 135 are advantageously attached to the bottom, which for Securing the lid in the floor are deformable before the soldering process.
  • partition walls 134 can be introduced into openings in the cover, as can be inserted. These partitions can also be secured with tabs.
  • the partitions are advantageously approximately B-shaped and lie against the contour of the floor.
  • Bottom 104 and cover 105 form at least two, possibly also 3, 4 or more longitudinal channels, both of which essentially have a circular or oval cross section.
  • the flat tubes 103 are received by the floor 104 and protrude with their flat tube ends into the longitudinal channels approximately up to a parting plane.
  • Bottom 104 and cover 105 are cut out of a sheet metal plate, not shown, and are embossed or bent into the shape shown, that is, manufactured without cutting. However, the manufacturing process can also be carried out in a different order, ie first the board is deformed and then the bottom or the cover is punched out. After joining the individual parts such as flat tubes 103, bottom 104 and cover 105, the entire gas cooler 1, which can also have a further collecting box, not shown, can be soldered.
  • FIG. 12 shows a further exemplary embodiment of the invention, the design of the base and cover being similar to that of FIG. 11, but the base and cover being interchanged in FIG. 12.
  • the lid engages around the outside of the base with its side arms and the tabs are formed on the arms of the lid. It is also advantageous here that the tabs can come to bear laterally on the tubes 103 or can be arranged between two tubes.
  • the base and lid have two approximately semicircular areas which are connected by an approximately straight section. Arms aligned approximately perpendicular to the central region are provided on the parts, such as the base or lid, which encompass the other part.

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)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

L'invention concerne un échangeur de chaleur, notamment un refroidisseur à gaz utilisant du CO2 comme réfrigérant. Cet échangeur de chaleur comprend: au moins un collecteur en deux parties, constitué d'un fond et d'un couvercle et présentant au moins deux canaux longitudinaux de section sensiblement circulaires, ainsi que des tubes plats. Ces derniers présentent des extrémités qui sont reçues dans des ouvertures du fond. Le fond, le couvercle et les tubes plats sont soudés les uns aux autres.
EP04722294A 2003-04-03 2004-03-22 Echangeur de chaleur Expired - Lifetime EP1613916B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10315371A DE10315371A1 (de) 2003-04-03 2003-04-03 Wärmeübertrager
PCT/EP2004/003016 WO2004088234A2 (fr) 2003-04-03 2004-03-22 Echangeur de chaleur

Publications (2)

Publication Number Publication Date
EP1613916A2 true EP1613916A2 (fr) 2006-01-11
EP1613916B1 EP1613916B1 (fr) 2010-11-17

Family

ID=32981038

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04722294A Expired - Lifetime EP1613916B1 (fr) 2003-04-03 2004-03-22 Echangeur de chaleur

Country Status (8)

Country Link
US (1) US7578340B2 (fr)
EP (1) EP1613916B1 (fr)
JP (1) JP2006522306A (fr)
CN (1) CN1768244A (fr)
AT (1) ATE488742T1 (fr)
BR (1) BRPI0408578A (fr)
DE (2) DE10315371A1 (fr)
WO (1) WO2004088234A2 (fr)

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US10337799B2 (en) 2013-11-25 2019-07-02 Carrier Corporation Dual duty microchannel heat exchanger
DE102014200794A1 (de) 2014-01-17 2015-07-23 Volkswagen Aktiengesellschaft Sammelrohr, Wärmeübertrager und Verfahren zur Herstellung eines Sammelrohres
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CN111256392B (zh) * 2018-11-30 2023-03-28 浙江三花汽车零部件有限公司 一种换热器
CN111256391B (zh) * 2018-11-30 2023-04-21 浙江三花汽车零部件有限公司 换热装置
EP3889537B1 (fr) 2018-11-30 2024-05-01 Zhejiang Sanhua Automotive Components Co., Ltd. Dispositif d'échange de chaleur
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WO2021234962A1 (fr) * 2020-05-22 2021-11-25 三菱電機株式会社 Échangeur de chaleur
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Also Published As

Publication number Publication date
WO2004088234A3 (fr) 2005-01-06
DE10315371A1 (de) 2004-10-14
US20060266509A1 (en) 2006-11-30
CN1768244A (zh) 2006-05-03
DE502004011898D1 (de) 2010-12-30
EP1613916B1 (fr) 2010-11-17
JP2006522306A (ja) 2006-09-28
ATE488742T1 (de) 2010-12-15
WO2004088234A2 (fr) 2004-10-14
US7578340B2 (en) 2009-08-25
BRPI0408578A (pt) 2006-03-21

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