EP1769207B1 - Echangeur thermique a plaques - Google Patents

Echangeur thermique a plaques Download PDF

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Publication number
EP1769207B1
EP1769207B1 EP05770113A EP05770113A EP1769207B1 EP 1769207 B1 EP1769207 B1 EP 1769207B1 EP 05770113 A EP05770113 A EP 05770113A EP 05770113 A EP05770113 A EP 05770113A EP 1769207 B1 EP1769207 B1 EP 1769207B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
plate heat
plates
ducts
housing
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.)
Not-in-force
Application number
EP05770113A
Other languages
German (de)
English (en)
Other versions
EP1769207A1 (fr
Inventor
Michael Seils
Hans Weitzenbürger
Monika Koschmann
Beate Rosner
Ewald Schneider
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.)
Deutz AG
Original Assignee
Deutz AG
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 Deutz AG filed Critical Deutz AG
Publication of EP1769207A1 publication Critical patent/EP1769207A1/fr
Application granted granted Critical
Publication of EP1769207B1 publication Critical patent/EP1769207B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F28D9/0062—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 spaced plates with inserted elements
    • F28D9/0075—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 spaced plates with inserted elements the plates having openings therein for circulation of the heat-exchange medium from one conduit to another
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/0075—Supports for plates or plate assemblies

Definitions

  • the invention relates to a plate heat exchanger, in particular for reciprocating internal combustion engines, with a number of guide channels for a fluid, which are connected in parallel to each other by collecting ducts, wherein the guide channels have a pair of plates which are sealingly connected at their edges, wherein in the area the collecting channels between the plates within the guide channels spacers and outside the guide channels spacers are provided and wherein the collecting ducts are sealingly connected to fluid channels in a housing and closed at the opposite end and the plate heat exchanger by means of screws on the housing can be fastened.
  • Such a plate heat exchanger is from the EP 0 470 200 B1 known.
  • the plates in a plan view have a substantially rectangular shape, which are rounded at the narrow sides.
  • spacers and spacers are provided between the plates, which connect to the plates in the region of the collecting ducts End sheets.
  • Both the end plates and the spacers and spacers fill the arcuate narrow sides of the plates completely and have through holes for screws, with which the plate heat exchanger to an internal combustion engine or a housing of an internal combustion engine can be screwed.
  • the plate heat exchanger is arranged on the internal combustion engine or on a housing in such a way that it flows through in the longitudinal direction, then the plates with spacers and spacers filling the full width of the heat exchanger form a broad barrier for the liquid flowing in on the narrow side of the heat exchanger so that even if the lid of the housing is laterally expanded, an unfavorable flow through the plate heat exchanger is given, the heat exchanger performance is impaired.
  • the plate heat exchanger by the leading through the complete heat exchanger holes, which also lead through the guide channels forming plates firmly clamped to the housing or the engine, so that thermal stresses can occur, which then affect the life of the plate heat exchanger.
  • the object of the invention is to improve a generic plate heat exchanger to the effect that it provides a higher heat exchanger performance available, especially if it is passed longitudinally. He should continue to be sealing, but not so rigidly arranged on the housing or the internal combustion engine that stresses arise. Finally, he should also be cheaper to manufacture.
  • the object of the invention is achieved in that the plates in the direction of the collecting channels in their dimensions are tapered are formed and that in addition to the collecting channels outside the plates at least one clamping screw is provided.
  • the plate areas surrounding the collecting channels with spacers and the spacers are designed substantially narrow, so that a good flow in the longitudinal direction of the heat exchanger is possible.
  • the plate heat exchanger is pressed sufficiently firmly against the housing or the internal combustion engine, but there is no positive guidance, especially in the area of the sealing surfaces to the fluid channels, which could cause a distortion of the plate heat exchanger.
  • the yoke plate can be placed externally both during installation on the plate heat exchanger, but it can also be attached to the plate heat exchanger, in particular soldered. The distance of the screw holes in the yoke plate is so far away from the sealing surfaces between the plate heat exchanger and the housing or the internal combustion engine, that no adjustment is to be feared.
  • the yoke plate may each be provided on the housing facing the ends of the collecting channels a mounting plate and connected to the plate heat exchanger.
  • This mounting plate serves to seal and secure the heat exchanger to the housing.
  • the mounting plates also have lateral Eyelets in which short screws are arranged. Even if this causes the fastening plates to be bolted to the housing and a certain forced fastening takes place, the freely movable PJatt heat exchanger arranged above it nevertheless has sufficient possibilities for stretching and deformation.
  • the plates as seen in plan view, have substantially parallel outer edges, from which taper edges originate on both sides.
  • the angle between the parallel outer walls and the tapering edges is approximately 20 to 30 degrees, in particular 25 degrees, and the tapering edges extend to a radius of between 18 and 28 mm, preferably 23 mm, around the axis of the collecting channels.
  • the plate heat exchanger has at the housing end of the collecting ducts depending on a sealing plate when using yoke plates and long screws or a respective mounting plate, which can be brought into operative connection with at least one mounted on the housing sealing ring.
  • the sealing plates and the mounting plates are sealingly connected to the plate heat exchanger, preferably soldered to it.
  • a sealing surface is provided which permits different expansions between the plate heat exchanger and the housing.
  • the adjoining the collecting channels openings in the sealing plates are each smaller than the dimensions of the associated fluid channels in the housing, so that it does not depend on a precise alignment of the opening in the sealing plate with respect to the dimensions of the fluid channel.
  • the opening in the sealing plate is sufficiently large to ensure good flow through the plate heat exchanger.
  • the dimensions of the fluid channel are therefore oversized for the amount of fluid passing through.
  • the circular-cylindrical fluid channel has a diameter of 28 mm when a circular cylindrical opening in the sealing plate or a circular cylindrical cross section of the collecting ducts have a diameter of 20 mm.
  • a bridge is provided outside the closed ends of the collecting ducts, which is fastened by means of screws to the housing.
  • the bridge is a one-piece fastening part, which preferably rests on the upper plate of the plate heat exchanger and can be particularly easily aligned, for example by appropriate design of the bridge with centering to the plate heat exchanger.
  • this bridge is attached to the housing with four screws, but it may optionally be sufficient to provide only two diagonally opposite screws on the collecting channels.
  • the attachment of the plate heat exchanger with above the upper flap arranged yoke plates or the bridge also has the advantage that correspondingly long screws are used, which also have a corresponding large elongation. This large stretch provides high security against loosening the screws during normal operation.
  • a spring element is provided outside the closed ends of the collecting ducts, which is supported on a lid covering the plate heat exchanger and presses the plate heat exchanger against the housing.
  • This spring element can be provided centrally in the middle of the plate heat exchanger between the two collection channels.
  • two spring elements are provided which are each arranged in the region of the collecting ducts between the uppermost plate of the plate heat exchanger and the lid.
  • the one or more spring elements are preferably fixed to the plate heat exchanger or the lid by a suitable device, so that during assembly a defined position is ensured.
  • the length of the spring elements is dimensioned so that in the unloaded state, the fastening screws of the cover can be inserted straight into the corresponding threaded holes in the housing and exert complete pressure when screwing these screws into the threaded holes, the spring elements such a pressure that the plate heat exchanger firmly against the housing is pressed.
  • the screws which are necessary in the attachment with yoke plates or bridge, can basically be omitted when using the spring element, but it is provided with these screws centering on the housing, the centering cooperate laterally with the sealing plates and a defined mounting position of the Ensure plate heat exchanger.
  • a central fastening element which engages in the fluid channel can be used in each collecting channel.
  • This fastener is inserted through the collecting channel of the side facing away from the housing, in which case, of course, at this point - ie in the top plate - an opening is provided which is closed after installation with a sealing plug.
  • the fastener may be formed as a hollow screw, which on a support flange of the bottom plate rests. Alternatively, the screw may extend through the entire collection channel and be supported on the outside of the top plate. In this embodiment, the otherwise required lid can be integrated into the hollow screw. For an unobstructed flow of oil between the collecting channels and the cooling chambers of the plate heat exchanger corresponding transfer openings are embedded in the hollow screw.
  • This design also has the advantage that - as in the attachment with at least one spring element - the flow around the plate heat exchanger with cooling water is further improved because no flow disturbing screws traverse the entire cooling water space. Also in this embodiment, it is provided with the correspondingly smaller sized screws centering on the housing, the centering laterally interact with the sealing plates and ensure a defined mounting position of the plate heat exchanger. This ensures that the banjo bolts can be easily mounted.
  • guide devices are attached to the plate heat exchanger, for example in the form of catch plates, which are aligned with the flow channel from which the cooling liquid is supplied.
  • These guide devices are designed so that they cause a particularly intensive and efficient flow through the plate heat exchanger with the liquid.
  • the guide devices may be formed straight or laterally biased on the lid, so that the liquid supplied is inevitably passed through the plate heat exchanger.
  • the length of the guide devices is optimized depending on the design.
  • 1 generally designates a plate heat exchanger which has a larger number of guide channels designated 2, which are composed of plates 3a and 3b.
  • the guide channels 2 are connected to each other at the ends of the plates 3a and 3b by means of collecting channels 4a and 4b, so that the guide channels are fluidly connected in parallel with each other.
  • spacers 5 are inserted within the guide channels and spacers 6 are provided between the plates 3 a and 3 b outside the guide channels.
  • the plates 3a and 3b, the spacers 5 and the spacers 6 are connected to each other soldered, so that results in a compact plate heat exchanger.
  • the plates 3a and 3b have on the surfaces of the plates distributed nubs 7, which serve to increase the stability and the improvement of the heat transfer between the liquid flowing around the plate heat exchanger 1 and the fluid flowing through the plate heat exchanger 1.
  • a yoke plate 10 is soldered to the plate 3a, wherein on the opposite side in the region of the collecting channels 4a and 4b each a yoke plate 10 is soldered.
  • the yoke plate 10 has lateral eyelets, which project beyond the collecting channels 4a and 4b. Through the eyelets screws 11 are guided, which are screwed in a designated 12 housing of an internal combustion engine, not shown.
  • a fluid channel 13 is formed in each case, which is connected to a fluid circuit, not shown, of the internal combustion engine.
  • a fluid circuit not shown, of the internal combustion engine.
  • O-rings 14a and 14b are used around the fluid channels 13 around 12 grooves. These O-rings 14a and 14b are in operative connection with the sealing plates 9, so that in conjunction with the bias of the screws 11, a tight connection of the collecting channels 4a and 4b to the fluid channels 13 results.
  • the cross sections of the fluid channels 13 are larger than the cross sections of the collecting channels 4a and 4b or the openings in the sealing plates 9, so that mounting tolerances between the plate heat exchanger 1 and the housing 12 and different strains can be compensated for each other.
  • flow channels 15 are incorporated in the housing, through which a liquid is supplied and removed, which flows around the plate heat exchanger 1 on its outer surfaces.
  • Narrower spacers within the guide channels and narrow spacers outside the guide channels result due to the tapered edges denoted 16, which are contracted with respect to the outer edges 17 of the plates 3a and 3b to a small radius of the plates in the region of the collecting channels 4a and 4b only a relatively thin column of the liquid from the flow channels 15 opposes and a favorable flow along the plate heat exchanger 1 is given.
  • the screws 11 impede the flow only slightly, as between the screws and the spacers 6 (see Fig. 3 , left side) passages still exist.
  • the plate heat exchanger is surrounded by a cover 18 which is sealingly connected to the housing 12.
  • Fig. 5 shows the same cut as Fig. 4 , here in addition to the plate heat exchanger 1 to the outer edges 17 side and / or upper guide devices 20 are mounted, which are aligned with the feeding flow channel 15 in.
  • the guide devices 21 can - as shown - be formed straight or also create the side walls or the roof wall of the lid 18 under tension.
  • Fig. 6 shows an alternative method of attachment, wherein the plate heat exchanger 1 by a spring member 19 which is disposed between the plate heat exchanger 1 and the upper part of the lid 18, is pressed against the housing 12.

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)
  • Polishing Bodies And Polishing Tools (AREA)
  • Polarising Elements (AREA)

Claims (15)

  1. Echangeur de chaleur à plaques (1), comprenant une pluralité de canaux de guidage (2) pour un fluide, qui sont montés en parallèle les uns aux autres au moyen de canaux d'assemblage (4a, 4b), les canaux de guidage (2) présentant une paire de plaques (3a, 3b) qui sont connectées l'une à l'autre de manière hermétique au niveau de leurs bords, des éléments d'espacement (5) étant prévus dans la région des canaux d'assemblage (4a, 4b) entre les plaques (3a, 3b) à l'intérieur des canaux de guidage (2), et des dispositifs d'espacement (6) étant prévus en dehors des canaux de guidage (2), les canaux d'assemblage (4a, 4b) pouvant être raccordés hermétiquement à des canaux de fluide (13) dans un boîtier (12) et étant fermés à l'extrémité opposée, et l'échangeur de chaleur à plaques (1) pouvant être fixé au boîtier (12) au moyen de vis (11),
    caractérisé en ce que
    les plaques (3a, 3b) sont réalisées dans la direction des canaux d'assemblage (4a, 4b) avec un rétrécissement de leurs dimensions et en ce qu'au moins une vis (11) est prévue en plus des canaux d'assemblage (4a, 4b) en dehors des plaques (3a, 3b).
  2. Echangeur de chaleur à plaques (1) selon la revendication 1,
    caractérisé en ce qu'en dehors des extrémités fermées des canaux d'assemblage (4a, 4b) est prévue à chaque fois une plaque de culasse (10) qui est fixée au boîtier (12) au moyen de deux vis (11).
  3. Echangeur de chaleur à plaques (1) selon la revendication 1,
    caractérisé en ce que l'on prévoit sur l'extrémité du côté du boîtier des canaux d'assemblage (4a, 4b) une plaque de fixation respective, qui est fixée au boîtier (12) au moyen de deux vis.
  4. Echangeur de chaleur à plaques (1) selon l'une quelconque des revendications 2 ou 3,
    caractérisé en ce que les plaques de culasse (10) et les plaques de fixation sont connectées à l'échangeur de chaleur à plaques (1), de préférence par brasage.
  5. Echangeur de chaleur à plaques (1) selon la revendication 1,
    caractérisé en ce que les plaques (3a, 3b), vues de dessus, présentent des bords extérieurs (17) s'étendant essentiellement parallèlement, desquels partent de chaque côté des bords de rétrécissement (16).
  6. Echangeur de chaleur à plaques (1) selon les revendications 1 ou 5,
    caractérisé en ce que l'angle entre les bords extérieurs parallèles (17) et les bords de rétrécissement (16) vaut environ 20 à 30°, notamment 25°.
  7. Echangeur de chaleur à plaques (1) selon l'une quelconque des revendications 1, 5 ou 6,
    caractérisé en ce que les bords de rétrécissement (16) se terminent avec un rayon de 18 à 28 mm, de préférence de 23 mm, autour de l'axe des canaux d'assemblage (4a, 4b).
  8. Echangeur de chaleur à plaques (1) selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que l'échangeur de chaleur à plaques (1) présente, à l'extrémité du côté du boîtier des canaux d'assemblage (4a, 4b), une plaque d'étanchéité respective (9) qui peut être amenée en liaison fonctionnelle avec au moins une bague d'étanchéité respective (joints toriques 14a, 14b) montée sur le boîtier (12).
  9. Echangeur de chaleur à plaques (1) selon la revendication 8,
    caractérisé en ce que les plaques d'étanchéité (9) sont fixées de manière hermétique sur l'échangeur de chaleur à plaques (1), de préférence par brasage.
  10. Echangeur de chaleur à plaques (1) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que les ouvertures se raccordant aux canaux d'assemblage (4a, 4b) dans les plaques d'étanchéité (9) ou les plaques de fixation, sont à chaque fois plus petites que les dimensions des canaux de fluide (13) associés, ou inversement.
  11. Echangeur de chaleur à plaques (1) selon la revendication 10,
    caractérisé en ce que les canaux d'assemblage (4a, 4b) et/ou les ouvertures dans les plaques d'étanchéité (9) et les plaques de fixation sont réalisés sous forme cylindrique circulaire avec un diamètre d'environ 20 mm, et les canaux de fluide (13) sont formés, au moins au niveau de leurs extrémités tournées vers l'échangeur de chaleur à plaques (1), également sous forme cylindrique circulaire avec un diamètre d'environ 28 mm.
  12. Echangeur de chaleur à plaques (1) selon l'une quelconque des revendications 1 et 5 à 11,
    caractérisé en ce qu'en dehors des extrémités fermées des canaux d'assemblage (4a, 4b), on prévoit un pont qui est fixé au boîtier (12) au moyen des vis (11).
  13. Echangeur de chaleur à plaques (1) selon l'une quelconque des revendications 1 et 5 à 11,
    caractérisé en ce qu'en dehors des extrémités fermées des canaux d'assemblage (4a, 4b), au moins un élément de ressort (19) est prévu, lequel s'appuie sur un couvercle (18) recouvrant l'échangeur de chaleur à plaques, et presse l'échangeur de chaleur à plaques (1) contre le boîtier (12).
  14. Echangeur de chaleur à plaques (1) selon l'une quelconque des revendications 1 et 5 à 11,
    caractérisé en ce que dans chaque canal d'assemblage (4a, 4b) est inséré un élément de fixation central qui vient en prise à chaque fois dans le canal de fluide (13).
  15. Echangeur de chaleur à plaques (1) selon l'une quelconque des revendications précédentes,
    caractérisé en ce que l'on monte sur l'échangeur de chaleur à plaques (1) des dispositifs de conduction (20) qui sont orientés vers le canal d'écoulement (15).
EP05770113A 2004-07-22 2005-07-12 Echangeur thermique a plaques Not-in-force EP1769207B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004035448A DE102004035448A1 (de) 2004-07-22 2004-07-22 Platten-Wärmetauscher
PCT/EP2005/007509 WO2006010463A1 (fr) 2004-07-22 2005-07-12 Echangeur thermique a plaques

Publications (2)

Publication Number Publication Date
EP1769207A1 EP1769207A1 (fr) 2007-04-04
EP1769207B1 true EP1769207B1 (fr) 2009-04-29

Family

ID=35124693

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05770113A Not-in-force EP1769207B1 (fr) 2004-07-22 2005-07-12 Echangeur thermique a plaques

Country Status (4)

Country Link
EP (1) EP1769207B1 (fr)
AT (1) ATE430296T1 (fr)
DE (2) DE102004035448A1 (fr)
WO (1) WO2006010463A1 (fr)

Families Citing this family (11)

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Publication number Priority date Publication date Assignee Title
DE10359806A1 (de) 2003-12-19 2005-07-14 Modine Manufacturing Co., Racine Wärmeübertrager mit flachen Rohren und flaches Wärmeübertragerrohr
DE102005053924B4 (de) * 2005-11-11 2016-03-31 Modine Manufacturing Co. Ladeluftkühler in Plattenbauweise
US8424592B2 (en) 2007-01-23 2013-04-23 Modine Manufacturing Company Heat exchanger having convoluted fin end and method of assembling the same
SE532084C2 (sv) 2007-05-10 2009-10-20 Alfa Laval Corp Ab Plattvärmeväxlare
CN101691973B (zh) * 2009-10-20 2011-04-13 江苏宝得换热设备有限公司 一种板式换热器
DE102013014434A1 (de) * 2013-08-30 2015-03-05 Modine Manufacturing Company Gelöteter Wärmetauscher
SI2886994T1 (sl) * 2013-12-20 2016-10-28 Alfa Laval Corporate Ab Ploščni izmenjevalnik toplote z montirno prirobnico
DE102016100305A1 (de) 2016-01-11 2017-07-13 Hanon Systems Anordnung zur Ladeluftkühlung
FR3053453B1 (fr) * 2016-06-29 2019-07-05 Liebherr-Aerospace Toulouse Sas Dispositif d'echange thermique comprenant au moins un dispositif raidisseur, systeme de conditionnement d'air et vehicule
DE102017000183A1 (de) * 2017-01-12 2018-07-12 Modine Manufacturing Company Führungs-/Lenkungsvorrichtung für Wärmeübertrager durchströmende Fluidströme
CN111819403B (zh) * 2018-03-07 2022-07-08 达纳加拿大公司 带有一体式电加热元件和多个流体流动通路的热交换器

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IT1204157B (it) * 1986-02-07 1989-03-01 Fonderie E Officine San Giorgi Scambiatore di calore particolarmente adatto ad essere impiegato come recuperatore di calore da gas umidi
SE462763B (sv) * 1989-04-28 1990-08-27 Torell Ab Plattvaermevaexlare/kylare samt saett att tillverka denna
DE4403144C3 (de) * 1994-02-02 2002-05-29 Laengerer & Reich Gmbh & Co Plattenwärmeaustauscher
AU2001273879A1 (en) * 2000-09-28 2002-04-08 Dantherm Hms A/S A heat exchanger comprising plate elements with spiral ducts
US20030145979A1 (en) * 2002-02-05 2003-08-07 Beddome David Wilson Heat exchanger having variable thickness tie rods and method of fabrication thereof
SE522500C2 (sv) * 2002-09-17 2004-02-10 Valeo Engine Cooling Ab Anordning vid en plattvärmeväxlare

Also Published As

Publication number Publication date
DE102004035448A1 (de) 2006-02-16
DE502005007198D1 (de) 2009-06-10
ATE430296T1 (de) 2009-05-15
WO2006010463A1 (fr) 2006-02-02
EP1769207A1 (fr) 2007-04-04

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