EP1843116A2 - Échangeur de chaleur à plaques empilées - Google Patents

Échangeur de chaleur à plaques empilées Download PDF

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Publication number
EP1843116A2
EP1843116A2 EP07006914A EP07006914A EP1843116A2 EP 1843116 A2 EP1843116 A2 EP 1843116A2 EP 07006914 A EP07006914 A EP 07006914A EP 07006914 A EP07006914 A EP 07006914A EP 1843116 A2 EP1843116 A2 EP 1843116A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger according
stacked
stack
bypass channel
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.)
Withdrawn
Application number
EP07006914A
Other languages
German (de)
English (en)
Inventor
Franco Ghiani
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 EP1843116A2 publication Critical patent/EP1843116A2/fr
Withdrawn legal-status Critical Current

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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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/23—Layout, e.g. schematics
    • F02M26/25—Layout, e.g. schematics with coolers having bypasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
    • F02M26/22—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories with coolers in the recirculation passage
    • F02M26/29—Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials
    • F02M26/32—Liquid-cooled heat exchangers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
    • F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/11—Manufacture or assembly of EGR systems; Materials or coatings specially adapted for EGR systems
    • 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
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/06—Derivation channels, e.g. bypass

Definitions

  • the invention relates to a stacked plate heat exchanger according to the preamble of claim 1.
  • the stacked plate heat exchanger which is often used as an oil / coolant radiator in motor vehicles, consists of a plurality of identically formed stacking disks, ie plates with a circumferential, raised edge and cup-shaped characteristics.
  • the stacking disks are stacked into a block or stack and soldered in the area of the peripheral edges.
  • the stacking disks are soldered together in the area of the cup-shaped characteristics. This creates flow channels for two media, such as oil and a liquid coolant.
  • turbulence plates can be inserted to increase the heat transfer, in particular on the oil side, wherein the turbulence sheets are also soldered to the stacking disks and thus develop a tie rod effect.
  • the internal pressure resistance of the heat exchanger is increased.
  • the assembly of the plates formed as equal parts takes place in such a way that when stacking each of the following plate by 180 degrees about its vertical axis is turned.
  • the stack of the heat exchanger is closed at the top usually by a cover, which has a greater wall thickness than the stacking disks. While the stack disks arranged within the stack are largely pressure-balanced, this is not the case for the cover disk, which is why it is reinforced in order to withstand the increased pressure load. This reinforcement also applies to the bottom or base plate of the stack, as from the DE 197 11 258 A1 the applicant is known.
  • exhaust gas heat exchanger is, for. B. after DE 102 03 003 A1 known to associate the bypass heat exchanger with a bypass, which via an exhaust valve, which acts as a switch between the exhaust gas heat exchanger and bypass, can be controlled.
  • the bypass channel can in the entire heat exchanger, ie integrated in the housing or - as from DE 199 06 401 C1 is known - be arranged separately to the exhaust gas heat exchanger.
  • the exhaust valve can be integrated into the heat exchanger or arranged separately, in turn, an arrangement on the exhaust gas inlet or exhaust gas outlet side of the heat exchanger is possible.
  • the known exhaust gas heat exchanger with bypass channel are formed as a tube bundle heat exchanger, wherein a bundle of tubes, which are flowed through by exhaust gas, is arranged in a housing, which is flowed through by a coolant.
  • a bypass channel which is advantageously integrated in the stack, is assigned to the stack of heat exchangers consisting of stack disks. This is achieved in an advantageous manner in that an additional stacking disk, a cover disk, designed as a bypass channel and connected to the edge of the other stacking disks, d. H. is solderable.
  • a bypass valve advantageously a rotary valve is arranged in an advantageous embodiment of the invention, which can be actuated from the outside by any adjusting means.
  • bypass valve By the bypass valve, a portion of the mass flow can be passed by the heat exchanger, so that the heat exchanger is flowed through by a reduced mass flow. Also advantageous is the arrangement of a rotary valve in the relatively shallow-building bypass channel, which is designed as an additional stacking disk. For the entire heat exchanger thus results in the advantage of a compact design for a equipped with bypass duct and bypass valve heat exchanger.
  • the outer stacking disks are reinforced by reinforcing disks, which have a greater wall thickness and / or stiffening beads.
  • a reinforcing disk is provided with tie rods, which are formed as a flap of the reinforcing disk and with the additional stacking disk, which forms the bypass channel, soldered are.
  • the bypass valve may be arranged on the inflow side or also on the outflow side of the first flow medium.
  • the disks of the Stapelaminkorübertragers can be smooth or profiled formed, d. H. be provided with structural elements or with a corrugation, as is known from the prior art.
  • the stacked disk heat exchanger with bypass channel can be used as exhaust gas heat exchanger in an exhaust gas recirculation system of a motor vehicle, d. H.
  • the flow channels for the first flow medium are flowed through by the exhaust gas of the internal combustion engine - as well as the controllable by the rotary valve valve bypass channel.
  • an exhaust gas cooler is cooled by the liquid coolant of the internal combustion engine; however, air cooling is also possible.
  • a use as intercooler with a controllable charge air flow rate is possible.
  • the compact and flat design of the disc heat exchanger according to the invention is very suitable for use in motor vehicles, d. H. is very advantageous here.
  • Fig. 1 shows a stacked plate heat exchanger 1, which is preferably used as an exhaust gas heat exchanger in a motor vehicle, not shown.
  • EGR system exhaust gas recirculation system
  • the stacked plate heat exchanger 1 has for connection to the EGR system an exhaust gas inlet opening 2 and an exhaust gas outlet opening 3 and - for connection to a not shown coolant circuit of the internal combustion engine - a coolant inlet nozzle 4 and a coolant outlet pipe 5.
  • the stacked-plate heat exchanger 1 consists, on the one hand, of a stack of stacking disks 6, which form flow channels (not illustrated) for the two flow media, ie in this exemplary embodiment for the exhaust gas and the coolant.
  • This construction of a Stapelaminkorübertragers is known from the aforementioned prior art.
  • an additional stacking disk 7 is arranged as a cover disk, which in plan has the same shape as the stacking disks 6 and is soldered at the edge to the topmost stacking disk 6.
  • the additional stacking disk 7 forms a bypass channel for the exhaust gas entering into the inlet opening 2, with the consequence that the exhaust gas inlet opening 2 can be closed briefly with the exhaust gas outlet opening 3 without the exhaust gas flowing through the stacking disks 6.
  • a bypass valve in the form of a rotary valve 8 is arranged in the region of the exhaust inlet opening 2, which can be actuated via a pivot pin 9 and a pivot lever 10.
  • the rotary valve 8 acts - as is known - as a switch for the incoming exhaust gas, so that this is passed either through the exhaust gas heat exchanger consisting of the stacking disks 6, or through the bypass channel 7.
  • bypass valve in the form of the rotary valve 8, 9, 10 may also be arranged in the region of the exhaust gas outlet opening 3, ie on the "cold" side of the heat exchanger 1.
  • coolant inlet and outlet nozzles 4, 5 can be reversed, so that the exhaust gas and the coolant are either in cocurrent or countercurrent.
  • the exhaust gas heat exchanger 1 can be connected on the exhaust side via not shown screw flanges with the exhaust pipes of the EGR system, also not shown, including welded or soldered Einschraubmuttern 11, 12 are provided at the inlet and the outlet opening 2, 3 for the exhaust gas.
  • the screw-in nuts 11, 12 are fixed to the inside (not visible) of the additional disc 7.
  • Fig. 2 shows the stacked plate heat exchanger 1 enlarged in a view from the side - for the same parts like reference numerals are used.
  • the stacking disks 6 shown in FIG. 1 are shown here as two types of stacking disks, indicated by the reference numerals 6a, 6b, with different heights.
  • the stacking disks 6a have a lower height
  • the stacking disks 6b have a greater height and flow channels (not illustrated) of a larger flow cross-section, which is known from the prior art mentioned at the beginning.
  • the larger flow cross sections are traversed by the exhaust gas, the smaller of the coolant.
  • the additional disc 7 is arranged, which is also designed as a stacking disc, but has a much greater height H.
  • the cover plate 7 is thus - as a hood - over the stack, consisting of stacking discs 6a, 6b, slipped and forms a soldered block with these. From the cover plate 7 projects upwards the pivot pin 9, which is positively encompassed by a trained as a spring clip pivot lever 10.
  • the pivot pin 9 is guided in a neck 13, which is connected to the cover plate 7, in particular by soldering and / or Verstämmen.
  • Fig. 3 shows the stacked plate heat exchanger 1 in a front view, compared to the representation in Fig. 2 reduced. Again, the same reference numbers are used.
  • the stacked-plate heat exchanger 1 shows the stacked-plate heat exchanger 1 in a view from below, ie in the direction X according to FIG. 3.
  • the lowermost stacking disk 6a has the inlet and outlet openings 4, 5 for the coolant.
  • FIG. 5 shows an isometric illustration of a reinforcing disk 14 which is provided for the underside (cf., FIG. 4) of the exhaust gas heat exchanger 1 and contains the two coolant sockets 4, 5.
  • the reinforcing disk 14, which has transverse stiffening beads 15, is soldered to the lowermost stacking disk 6a, whereby at the same time the coolant connection stubs 4, 5 are fastened to the exhaust gas heat exchanger 1.
  • Fig. 6 shows in isometric view the exhaust gas heat exchanger 1 without the upper cover plate 7, which forms the bypass channel.
  • the consisting of the stacking disks 6 heat exchanger block has a stacking disks 6 perpendicular traversing distribution channel 16 for incoming exhaust gas and the stacking disks 6 vertically passing through collecting duct 17 for exiting exhaust gas.
  • the heat exchanger block has a flush with the coolant inlet port 4 inlet channel 18 and aligned with the coolant outlet port 5 outlet channel 19, which pass through the stacking disks 6 vertically.
  • exhaust gas and coolant are in countercurrent.
  • a direct current of both media is also possible by permutation of the inlet and outlet nozzle.
  • Fig. 7 shows the heat exchanger block shown in Fig. 6 with an upper reinforcing plate 20 which is soldered to the uppermost stacking disk 6, wherein at the same time the coolant channels 18, 19 shown in Fig. 6 are completed fludiddicht.
  • rows of hook-shaped tie rods 21 are cut out and formed, which also act as spacers for the cover plate to be arranged above 7.
  • the exhaust channels are 16, 17 open at the top - downwards they are closed by the reinforcing plate 14 shown in FIG.
  • a bearing bore 22 is arranged in the reinforcing plate 20, which serves to receive a pivot pin shown in Fig. 8.
  • FIG. 8 shows the heat exchanger block according to FIG. 7 with a bypass valve 23, which has the elements already mentioned in the description of FIGS. 1, 2, 3, such as rotary valve 8, pivot pin 9, pivot lever 10 and neck 13.
  • the neck 13 as a guide for the pivot pin 9 is fixedly connected to the cover plate 7 and thus serves together with the bearing bore 22 (see Fig. 7) as a pivot bearing for the pivot pin 9, which is positively connected to the rotary valve 8
  • the pivot lever 10 which is also positively connected to the pivot pin 9 verbundne, has an eccentrically arranged to the pivot axis opening 10 'on which an unillustrated actuating linkage for adjusting the rotary valve 8 engages.
  • the disk-shaped rotary valve 8 thus moves parallel to the plane of the stacking disks 6 and controls the cross section of the exhaust gas inlet channel 16. The bouncing of the gas against the disk-shaped rotary valve ensures a seal between the two channels.
  • the reinforcing disk is designed as a tie rod and / or flow straightener.
  • At least one return duct disk flange in particular as an integrated flange formed.
  • valve disc is disposed in the flow of the agent to be cooled in order to achieve a better seal.
  • the sockets are arranged on the channel plate and / or on the reinforcing disk such as fastened, soldered, welded or glued or integrally connected.
  • the actuation of the valve is effected by current bsp Elektromtor / s and / or magnetic, hydraulic and / or pneumatic.
  • the attachment to the pipe is made by a separate flange or an integral flange on the disc or by a screw connection, quick coupling, threaded nut connection or by means of bolts or a clip connection.
  • the heat exchanger can be fixed by means of the aforementioned possibilities in the vehicle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP07006914A 2006-04-03 2007-04-03 Échangeur de chaleur à plaques empilées Withdrawn EP1843116A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006015812 2006-04-03

Publications (1)

Publication Number Publication Date
EP1843116A2 true EP1843116A2 (fr) 2007-10-10

Family

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Family Applications (1)

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EP07006914A Withdrawn EP1843116A2 (fr) 2006-04-03 2007-04-03 Échangeur de chaleur à plaques empilées

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EP (1) EP1843116A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013120817A3 (fr) * 2012-02-15 2013-10-10 Mahle International Gmbh Échangeur de chaleur à plaques
DE102013206248A1 (de) 2013-04-09 2014-10-09 Behr Gmbh & Co. Kg Stapelscheiben-Wärmetauscher
CN106884747A (zh) * 2017-02-20 2017-06-23 上海理工大学 一种egr冷却器
CN111156850A (zh) * 2020-01-17 2020-05-15 陕西秦科世博航空科技有限公司 一种新型换热器及其换热方法
EP4296602A1 (fr) * 2022-06-24 2023-12-27 G20 Engineering S.r.l. Échangeur de chaleur à plaques et ensemble hydraulique comprenant un tel échangeur de chaleur

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013120817A3 (fr) * 2012-02-15 2013-10-10 Mahle International Gmbh Échangeur de chaleur à plaques
DE102013206248A1 (de) 2013-04-09 2014-10-09 Behr Gmbh & Co. Kg Stapelscheiben-Wärmetauscher
EP2789962A1 (fr) 2013-04-09 2014-10-15 Behr GmbH & Co. KG Échangeur thermique à plaques empilées
CN106884747A (zh) * 2017-02-20 2017-06-23 上海理工大学 一种egr冷却器
CN111156850A (zh) * 2020-01-17 2020-05-15 陕西秦科世博航空科技有限公司 一种新型换热器及其换热方法
CN111156850B (zh) * 2020-01-17 2021-07-20 陕西秦科世博航空科技有限公司 一种换热器及其换热方法
EP4296602A1 (fr) * 2022-06-24 2023-12-27 G20 Engineering S.r.l. Échangeur de chaleur à plaques et ensemble hydraulique comprenant un tel échangeur de chaleur

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