EP0639258B1 - Wärmetauscher mit geschweissten platten - Google Patents

Wärmetauscher mit geschweissten platten Download PDF

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Publication number
EP0639258B1
EP0639258B1 EP93910087A EP93910087A EP0639258B1 EP 0639258 B1 EP0639258 B1 EP 0639258B1 EP 93910087 A EP93910087 A EP 93910087A EP 93910087 A EP93910087 A EP 93910087A EP 0639258 B1 EP0639258 B1 EP 0639258B1
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EP
European Patent Office
Prior art keywords
plates
heat exchanger
welded
exchanger
elementary
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
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EP93910087A
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English (en)
French (fr)
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EP0639258A1 (de
Inventor
Jean-Noel Fernandez
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Individual
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Individual
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    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F28D9/0037—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 conduits for the other heat-exchange medium also being formed by paired plates touching each other
    • 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
    • F28D9/02—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 heat-exchange media travelling at an angle to one 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
    • F28F2240/00—Spacing means

Definitions

  • the present invention relates to a heat exchanger with welded plates, comprising in a generally known manner previously stamped metal plates, assembled in pairs by welding and forming stacked modular elements, defining two independent circuits, that is to say without communication l 'with each other, respectively for a first fluid and for a second fluid having to exchange heat with each other.
  • the latter can themselves be classified into two types: a first type in which the exchange surface is produced, as for plate and joint exchangers, from seasoned plates, the multitude of contact points of a plate stacked on another arranged in the opposite direction here ensuring the mechanical strength of the assembly; and a second type in which a circuit element belonging to the first circuit is produced by the assembly by welding of two previously stamped plates, while the second circuit of the exchanger results from the assembly of two modular elements defining the first circuit , or simply intervals between these elements of the first circuit.
  • This last type of exchanger, to which the present invention relates is known for example from documents EP-A-0165179 and EP-A-0186592.
  • the heat exchange surface being either grooved or supplemented by profiled elements inserted in the channels defined between the plates, does not allow mechanical cleaning of the exchanger and does not avoid obstruction of circuits, in the case of fluids loaded with fibers or other suspended materials.
  • the document DE-B-1064907 describes a heat exchanger with stacked horizontal metal plates, forming an exchange block of rectangular section, which are assembled by welding to four parallel gutters of "U" profile arranged in correspondence with the four angles of said section rectangular.
  • the document describes two plates, the corners of which are provided with square cutouts, into which the U-shaped beams are inserted, which maintain the stack of plates with the interposition of intermediate pieces (the pieces not being shown).
  • a differential expansion between the exchange block constituted by all of the stacked plates, on the one hand, and the frame formed by the corner gutters, on the other hand, is therefore impossible and the resulting expansion constraints can to be very important.
  • the present invention aims to eliminate all these drawbacks, by providing a heat exchanger with welded plates, of the type concerned, easily mechanically cleanable in all its internal parts therefore usable for the exchange of heat between two charged and / or dirtying fluids, and eliminating all constraints of differential expansion, while being achievable in a relatively simple and economical manner without altering the original properties of the material of which the plates are made.
  • the heat exchanger with welded plates according to the invention in which the set of plates, joined together so as to form an exchange block of rectangular section, is assembled by welding to four parallel gutters arranged in correspondence with the four angles of said rectangular section, it is intended that the four corner gutters partially surround four respective uprights belonging to the frame of the exchanger, each upright being produced in one or more pieces capable of sliding in the gutter of corresponding angle.
  • the frame includes not only the four uprights, but also two end bases, to which the opposite ends of the uprights are assembled. This frame is completed on the side faces by four removable doors, which are fixed on their periphery, in particular by screwing, against the portions of the uprights not covered by the corner gutters, as well as against the edges of the two end bases.
  • the stacked modular elements of the exchange block are each made from two rectangular elementary plates each having, at each of its four angles, a rectangular cutout having a buttonhole at its internal angle, the edges of each elementary plate being folded at 90 ° alternately in one direction and in the other to form four generatrices on which are welded, respectively, the four corner gutters.
  • This advantageous precut, characterized by buttonholes allows in each corner of the exchange block the obtaining of a continuous generator in particular vertical, while respecting the maximum work hardening rates imposed by the building codes, generator on which can then be welded, by simple butt welding, the corresponding corner gutter. This minimizes the tensions associated with manufacturing (forming, welding), in addition to the constraints linked to use (differential expansion).
  • the four corner gutters are distributed in two pairs of gutters in each of which two gutters are joined to one another by a wall in which are formed parallel transverse openings, on the edges of which are welded by docking the ends of the elements of a first circuit each made up of two elementary plates assembled together by welding, while the free spaces between these circuit elements define the second circuit of the exchanger.
  • the exchange block also comprises two cruciform end plates which, in combination with the faces of the four corner gutters, delimit four lateral distribution boxes, with a first pair of opposite distribution boxes associated with the first circuit, and another pair of opposite distribution boxes associated with the second circuit of the exchanger.
  • the exchange block has superimposed channels, delimited by the plates, the channels emerging alternately in the first pair of distribution boxes and in the second pair of boxes. of distribution. These channels are free passage, and are all accessible from the four lateral faces of the exchanger, after dismantling the doors, for their mechanical cleaning.
  • the distribution boxes being made directly from the corner gutters, the invention also solves the problem posed by the welding between the exchange block and the distribution boxes, the whole “exchange block - distribution chambers "being uniform in thickness (which basically differentiates the invention from the state of the art according to the aforementioned document EP-A-0186592).
  • the heat exchanger according to the invention is, in general, an exchanger with two independent circuits, of the type consisting of superposed modular elements, produced so as to constitute sections substantially rectangular with free passage.
  • this exchanger there will be described below, alternately, two embodiments of this exchanger, so as to highlight their common points and their differences, while following the order of the manufacturing operations.
  • the modular elements are made from metal plates 1, stamped and assembled two by two in opposition ( Figures 1 to 4).
  • Each plate is a precut sheet, comprising square cutouts 2 at its four angles; each of the four cut-outs 2 itself has a buttonhole 3 at its internal angle - see Figure 1.
  • the four cutouts 2 and their buttonholes 3 allow, as illustrated in FIG. 2, the shaping of the plate 1 by stamping.
  • two parallel folds 4 are produced at 90 °, so that the opposite edges 5 adjacent to these folds 4 are turned upwards.
  • two other parallel folds 6 are produced at 90 °, so that the opposite edges 7 adjacent to these folds 6 are turned downwards.
  • the respective adjacent ends 8 and 9 of the edges 5 and 7, turned one up and the other down, are located on the same vertical generator 10.
  • Two elementary plates 1, stamped as just indicated, are arranged in opposite directions, and assembled to each other by welding to form a modular element 12 of the exchanger. As illustrated in FIG. 3, the two plates 1 are placed in opposition, so that their respective stamped bosses 11 are brought together and matched, and an electric resistance welding operation is carried out by means of opposite welding electrodes 13 and 14, for securing by their flat bottoms the two bosses 11 of each pair of bosses brought into correspondence.
  • the modular element 12 shown in FIG. 4 is obtained, of square horizontal section, the generators 10 of which are situated at the four corners contain the ends of all the folded edges 5 and 7 of the two elementary plates 1
  • the first folded edges 5 extend in opposite directions, so as to form between them two elongated rectangular openings 15, on two opposite sides of the modular element 12.
  • the other folded edges 7 extend towards each other, so as to close the modular element 12 on its two other sides.
  • the modular elements 12 as defined above are stackable, their generators 10 coming into coincidence, and vertical gutters 16 (FIGS. 8 et seq.) Are welded to these modular elements, to the four angles, along these generatrices 10.
  • the modular base elements 17 are also produced, each by two plates 18 and 19 made of sheet metal, assembled together.
  • the first plate 18, of square shape remains flat.
  • the second plate 19, generally square in shape, is deformed by stamping, so as to have two opposite edges 20 folded at a certain inclination, and a series of ribs 21, parallel to each other and to the folded edges 20.
  • the first plate 18 is applied to the second plate 19, and spot welded or to the wheel on the latter. More particularly, two opposite sides 22 of the first plate 18 are thus welded to the folded edges 20 of the second plate 19, and one face of the first plate 18 is welded to the tops of the ribs 22 of the second plate 19.
  • Basic elements 17 (FIG. 6) are thus obtained which are circuit elements, with a plurality of parallel passages 23 open at their two ends. These basic elements 17, arranged one above the other with the same orientation, are also welded to vertical gutters.
  • two vertical gutters 16 proper located at two consecutive angles of the exchanger, are joined to each other by a vertical wall 24, in which are arranged horizontal lights 25 superimposed, generally trapezoidal in shape, extending practically over the entire width of the wall 24.
  • the ends of the basic elements 17 are welded by docking on the edges of the openings 25.
  • the vertical pitch of these openings 25 determines the spacing between two basic elements 17 consecutive.
  • the set of circuit elements 17 forms a first circuit of the exchanger, and the set of free spaces between these elements 17 defines the second circuit of the exchanger.
  • the gutters 16, produced at the four angles of the exchanger, are each presented as a vertical profile, the horizontal section of which is inscribed in a square.
  • Each gutter 16 has two adjacent faces 28 and 29 corresponding to an entire side of this square, and two other faces 30 and 31, extending the previous ones and corresponding to a fraction of the side of said square - see in particular Figure 8, and also the figures 9, 12, 13 and 14.
  • the two consecutive gutters 16, belonging to the same lateral face of the exchanger, are connected to each other at their base and at their top by parts belonging to the two end plates 26, and in particular by the folded edges 27 of these plates end 26, the assembly being carried out by welding.
  • the four gutters 16 and the two end plates 26 thus delimit, on the four lateral faces of the exchanger, four distribution boxes 32, 33, 34 and 35, opposite in pairs - see FIG. 12
  • a first pair of opposite distribution boxes 32 and 33 ensures the distribution of a fluid in the first circuit of the exchanger, and its collection at the outlet of this first circuit.
  • the second pair of opposing distribution boxes 34 and 35 distributes another fluid in the second circuit of the exchanger, independent of the first, and collects it at the outlet of this second circuit. This description of the distribution boxes 32 to 35 applies to the two embodiments.
  • the structure of the exchanger further comprises four vertical uprights 36, of square horizontal section, respectively arranged at its four angles.
  • Each upright 36 is received in a vertical gutter 16, which partially surrounds it.
  • the base of each upright 36 is assembled at an angle to a lower base 37 of square shape, and the top of each upright 36 is assembled to an angle of an upper base 38 of corresponding square shape.
  • the four side faces of the exchanger are closed, respectively, by four doors 39, 40, 41 and 42, screwed on the vertical uprights 16 and on the two lower 37 and upper 38 bases - see Figures 10 to 14.
  • Some doors 39 and 40 are crossed by respective tubing 43 and 44 of fluid inlet and outlet, for the arrival in the exchanger and the departure, of fluids called to run through the two internal circuits of the exchanger.
  • the provisions necessary for sealing, in particular at the doors, are not described here but must naturally be provided, according to the usual techniques.
  • an exchanger is thus obtained composed on the one hand of a generally parallelepipedal exchange block, including in particular the circuit elements 12 or 17 joined to the gutters 16, and on the other hand of a frame formed by the uprights 36 and the lower 37 and upper 38 bases.
  • the closure of the distribution boxes 32 to 35 by respective screwed doors 39 to 42 easily removable, allows rapid maintenance, in particular for cleaning the two fluid circuits, and access to all the welds.
  • the heat exchanger according to the invention can easily receive very charged fluids or requiring mechanical cleaning of the exchange surfaces.
  • Heat exchangers according to the invention can receive gases or liquids, and they find applications in many fields: chemical industry, heating of residential or other premises, food industry, stationery, etc ... and especially in cases where the nature of the fluids requires mechanical cleaning of the exchange surfaces, for example: diffusion juice in candy, black liquors in stationery, fermentation must in distillery or brewery, ...

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  • 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)

Claims (9)

  1. Wärmetauscher mit geschweißten Platten, aufweisend metallische vorgezogene Platten (1; 18, 19), die paarweise durch Schweißen verbunden sind und gestapelte modulare Elemente (12, 17) bilden, die zwei unabhängige Kreisläufe jeweils für ein erstes Fluid und für ein zweites Fluid definieren, die Anordnung der Platten (1; 18, 19) in einer Weise verbunden ist, um einen Austauschblock mit rechtwinkligem Querschnitt zu bilden, der durch Schweißen mit vier parallelen Rinnen (16) verbunden ist, die abhängig von den vier Winkeln des besagten rechtwinkligen Querschnittes angeordnet sind,
    dadurch gekennzeichnet, daß
    die vier winkligen Rinnen (16) abschnittsweise vier Stützen (36) jeweils zugehörig zum Gestell des Tauschers umfassen, jede Stütze (36) aus einem oder mehreren Stücken ausgeführt ist, die dazu geeignet sind, in der zugehörigen winkligen Rinne (16) zu gleiten.
  2. Wärmetauscher mit geschweißten Platten gemäß Anspruch 1, dadurch gekennzeichnet, daß die gestapelten modularen Elemente (12) des Tauscherblocks jedes aus zwei rechtwinkligen Plattenelementen (1) gebildet sind, von denen jedes an jedem seiner vier Winkel einen rechtwinkligen Abschnitt aufweist, der an seinem innenliegenden Winkel eine längliche Aussparung aufweist, die Ränder (5, 7) jedes dieser Plattenelemente (1) um 90° (bei 4, 6) entweder in eine Richtung oder in die andere zur Bildung von Mantellinien (10) abgekantet sind, an denen jeweils die vier winkligen Rinnen (16) angeschweißt sind.
  3. Wärmetauscher mit geschweißten Platten gemäß Anspruch 2, dadurch gekennzeichnet, daß Buckel (11) in Form von Wannen mit flachem Boden durch Tiefziehen in dem mittleren Bereich der Plattenelemente (1) gebildet sind, die tiefgezogenen Buckel (11) jeweils von zwei Plattenelementen (1), die zur Bildung eines modularen Elementes (12) gegenüber angeordnet sind, an ihren flachen Bodenteilen durch einen Schweißvorgang aneinander befestigt sind, um die beiden Plattenelemente (1) eines an dem anderen festzulegen.
  4. Wärmetauscher mit geschweißten Platten gemäß Anspruch 1, dadurch gekennzeichnet, daß die vier winkligen Rinnen (16) sich aufteilen in zwei Paare von Rinnen, bei denen jeweils zwei Rinnen (16) jeweils miteinander durch eine Seitenwand (24) verbunden sind, in der querangeordnete parallele Öffnungen (25) ausgespart sind, an deren Rändern durch Andocken Elemente (17) eines ersten Kreislaufes angeschweißt sind, der jeweils durch zwei Plattenelemente (18, 19) gebildet ist, die aneinander durch Verschweißen festgelegt sind, wohingegen der freie Raum zwischen diesen Elementen des Kreislaufes (17) den zweiten Kreislauf des Tauschers bilden.
  5. Wärmetauscher mit geschweißten Platten gemäß Anspruch 4, dadurch gekennzeichnet, daß jedes Element des Kreislaufes (17) sich zusammensetzt aus einem ebenen Plattenelement (18) und einem zweiten Plattenelement (19), das durch Tiefziehen deformiert ist, mit zwei gegenüberliegenden abgewinkelten Rändern (20) und einer Reihe von parallelen Rippen (21) zwischen ihnen und an den abgewinkelten Rändern (20) sind die beiden Plattenelemente (18, 19) durch Schweißen im Bereich der abgewinkelten Ränder (2) und an den Scheiteln der Rippen (21) jeweils aneinander festgelegt.
  6. Wärmetauscher mit geschweißten Platten gemäß irgendeinem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Tauscherblock ebenfalls zwei Platten mit kreuzartigen Außenkanten (26, 27) enthält, die in Kombination mit den Flächen (28, 29) der vier winkligen Rinnen (16) vier seitliche Verteilerkammern (32, 33, 34, 35) begrenzen, mit einem ersten Paar gegenüberliegender Verteilerkammern (32, 33), die mit dem ersten Kreislauf verbunden sind, und einem zweiten Paar von gegenüberliegenden Verteilerkammern (34, 35), die mit dem zweiten Kreislauf des Tauschers verbunden sind.
  7. Wärmetauscher mit geschweißten Platten gemäß irgendeinem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die vier Stützen (36) seines Gestells jede einen rechteckigen Querschnitt aufweisen, und daß jede seiner winkligen Rinnen (16), sich darstellend wie ein Profil, einen Bereich zum Festhalten an dem Rechteck enthält, aufweisend zwei benachbarte Flächen (28, 29) entsprechend einer Begrenzung an diesem Rechteck, und zwei andere Flächen (30, 31), die vorhergehenden verlängernd und korrespondierend zu einem Teilbereich des Randes des besagten Rechteckes.
  8. Wärmetauscher mit geschweißten Platten gemäß irgendeinem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß sein Gestell außer den vier Stützen (36) zwei außenliegende Grundplatten (37, 38) beinhaltet, an denen die gegenüberliegenden Enden der Stützen (36) befestigt sind, dieses Gestell an seinen seitlichen Flächen durch vier Abdeckungen (39, 40, 41, 42) vervollständigt ist, die unbeweglich an seinem Umfang insbesondere durch Verschraubung an den Bereichen der Stützen (36) befestigt sind, die nicht durch die winkligen Rinnen (16) sowie die Ränder der zwei außenliegenden Grundplatten (37, 38) abgedeckt sind.
  9. Wärmetauscher mit geschweißten Platten gemäß irgendeinem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die zwei unabhängigen Kreisläufe der Fluide nach der Demontage der Abdeckungen (39, 40, 41, 42) frei zugänglich und mechanisch waschbar sind, die beiden Kreisläufe dazu geeignet sind, von dem einen oder dem anderen der gewählten Fluide durchtreten zu werden.
EP93910087A 1992-05-05 1993-05-05 Wärmetauscher mit geschweissten platten Expired - Lifetime EP0639258B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9205828 1992-05-05
FR9205828A FR2690986B1 (fr) 1992-05-05 1992-05-05 Echangeurs a plaques soudees a circuit autoresistant a la pression et nouvelles plaques permettant la realisation de tels echangeurs.
PCT/FR1993/000434 WO1993022608A1 (fr) 1992-05-05 1993-05-05 Echangeur de chaleur a plaques soudees

Publications (2)

Publication Number Publication Date
EP0639258A1 EP0639258A1 (de) 1995-02-22
EP0639258B1 true EP0639258B1 (de) 1997-04-16

Family

ID=9429763

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93910087A Expired - Lifetime EP0639258B1 (de) 1992-05-05 1993-05-05 Wärmetauscher mit geschweissten platten

Country Status (6)

Country Link
EP (1) EP0639258B1 (de)
AT (1) ATE151863T1 (de)
DE (1) DE69309921T2 (de)
ES (1) ES2102030T3 (de)
FR (1) FR2690986B1 (de)
WO (1) WO1993022608A1 (de)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
FR2901016A1 (fr) * 2006-05-12 2007-11-16 Kapp France Sa Echangeur de chaleur a plaques d'echange soudees
CN102282437A (zh) * 2008-12-15 2011-12-14 维特姆 带有焊接的板的热交换器
RU2568716C1 (ru) * 2011-11-28 2015-11-20 Альфа Лаваль Корпорейт Аб Пластинчатый теплообменник блочного типа со свойствами предотвращения образования отложений

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JP4667298B2 (ja) * 2006-04-24 2011-04-06 株式会社豊田中央研究所 熱交換器及び熱交換型改質器
EP2291878A2 (de) * 2008-05-30 2011-03-09 Corning Incorporated Festoxidbrennstoffzellensysteme
DK2508831T3 (en) 2011-04-07 2016-03-07 Alfa Laval Corp Ab PLATE HEAT EXCHANGE
EP2647941A1 (de) * 2012-04-05 2013-10-09 Alfa Laval Corporate AB Plattenwärmeaustauscher
FR3003637B1 (fr) 2013-03-21 2015-04-17 Nexson Group Plaque pour echangeur thermique et echangeur thermique incorporant une telle plaque
DE102016100182A1 (de) * 2016-01-05 2017-07-06 Deg Engineering Gmbh Reaktor oder Wärmeübertrager
ITUB20160428A1 (it) * 2016-01-20 2017-07-20 Stefano Bandini Dispositivo per il trasferimento di calore tra fluidi con assemblaggio ad incastro.
PL3418664T3 (pl) 2017-06-20 2020-07-27 Alfa Laval Corporate Ab Płytowy wymiennik ciepła
EP3418665A1 (de) 2017-06-20 2018-12-26 Alfa Laval Corporate AB Plattenwärmetauscher
PL3457066T3 (pl) 2017-09-15 2022-08-16 Alfa Laval Corporate Ab Przegroda
DK3457067T3 (da) 2017-09-15 2023-04-11 Alfa Laval Corp Ab Ledepladebærer og ledeplade
FR3108714B1 (fr) * 2020-03-26 2022-12-23 Axens Echangeur de chaleur à plaques

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2901016A1 (fr) * 2006-05-12 2007-11-16 Kapp France Sa Echangeur de chaleur a plaques d'echange soudees
WO2007132083A1 (fr) * 2006-05-12 2007-11-22 Carbone Lorraine Equipements Genie Chimique Echangeur de chaleur a plaques d'echange soudees
CN101443619B (zh) * 2006-05-12 2010-12-08 卡朋罗兰化工设备有限公司 具有焊接热交换板的热交换器
CN102282437A (zh) * 2008-12-15 2011-12-14 维特姆 带有焊接的板的热交换器
CN102282437B (zh) * 2008-12-15 2016-04-20 维特姆 带有焊接的板的热交换器
RU2568716C1 (ru) * 2011-11-28 2015-11-20 Альфа Лаваль Корпорейт Аб Пластинчатый теплообменник блочного типа со свойствами предотвращения образования отложений

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FR2690986A1 (fr) 1993-11-12
DE69309921D1 (de) 1997-05-22
DE69309921T2 (de) 1997-10-23
FR2690986B1 (fr) 1998-06-12
ATE151863T1 (de) 1997-05-15
WO1993022608A1 (fr) 1993-11-11
ES2102030T3 (es) 1997-07-16
EP0639258A1 (de) 1995-02-22

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