EP0463298B1 - Echangeur de chaleur à plaques - Google Patents

Echangeur de chaleur à plaques Download PDF

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Publication number
EP0463298B1
EP0463298B1 EP91105123A EP91105123A EP0463298B1 EP 0463298 B1 EP0463298 B1 EP 0463298B1 EP 91105123 A EP91105123 A EP 91105123A EP 91105123 A EP91105123 A EP 91105123A EP 0463298 B1 EP0463298 B1 EP 0463298B1
Authority
EP
European Patent Office
Prior art keywords
heat exchange
profiling
plate
plates
central
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91105123A
Other languages
German (de)
English (en)
Other versions
EP0463298A1 (fr
Inventor
Friedrich Dipl.-Ing. Schenker
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.)
W Schmidt Bretten GmbH
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W Schmidt Bretten GmbH
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Filing date
Publication date
Application filed by W Schmidt Bretten GmbH filed Critical W Schmidt Bretten GmbH
Publication of EP0463298A1 publication Critical patent/EP0463298A1/fr
Application granted granted Critical
Publication of EP0463298B1 publication Critical patent/EP0463298B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/08—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning
    • F28F3/083—Elements constructed for building-up into stacks, e.g. capable of being taken apart for cleaning capable of being taken apart
    • 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

Definitions

  • the invention relates to a plate heat exchanger with a plurality of substantially rectangular, aligned and provided by embossing with a profile in the form of wave crests and troughs, which are rotated alternately by 180 ° against each other with mutual sealing and with the facing profile of adjacent plates are optionally releasably tensioned to form a stack, the plates forming alternate flow spaces between themselves for a first and a substantially parallel second medium through the circumferential seal, which are aligned with one another and formed by openings arranged in the corner regions of the plates Outflow openings can be loaded with the respective medium, the plates also having a central, essentially rectangular and two adjoining them on opposite sides, containing the inflow and outflow openings, essentially d have triangular heat exchange areas, and in addition, in at least one of the plates, the profiling of the central heat exchange area is at an angle with respect to the direct flow connection between the triangular heat exchange areas, and in this plate the profiling of the middle heat exchange area by at least one in
  • adjacent plates are braced against one another via seals arranged along their circumference in the form of elastic seals, mutual welding or mutual soldering, so that the seals delimit the spaces formed between the plates.
  • elastic circumferential seals are essentially assumed, without there being any restriction as to the circumferential seals.
  • the profiling of the plates of such heat exchangers generally consists of an undulating, often sinusoidally corrugated embossing with wave crests and wave troughs of equal cross-section.
  • embossings that differ from the same cross-sectional shape are also common and are included below.
  • the course of the wave crests and wave troughs of the profiling has different angles to the direct flow connection between the triangular heat exchange areas, which is usually the vertical of the plates, depending on the area of application of the plate heat exchanger, angles below 45 ° leading to so-called soft plates, while angles above 45 ° result in so-called hard plates.
  • the hard, high turbulence plates are usually used for smaller throughputs of the media and result in a high heat exchange coefficient.
  • the soft plates with a lower heat exchange coefficient are used for the throughputs of large quantities.
  • the pressing pressure on the plates causes a tendency of the plates by supporting the superimposed profiles so that they extend transversely to the direct flow connection or the vertical axis.
  • This tendency in the area of peripheral seals relative shifts and thus problems, is relatively small in the case of the so-called hard plates, since there the profile is oriented more transversely to the vertical, that is to say it has a certain supporting effect in this direction.
  • the profiling of the soft plates under the above-mentioned pressing pressure leads to greater lateral migration.
  • the profiling of the soft plates is bent several times in a zigzag or herringbone pattern across the width of the plates seen transversely to the direct flow direction in order to give the plate the required stability in the transverse direction mentioned.
  • a plate heat exchanger of the type mentioned is known from DE-A-21 09 346.
  • the middle heat exchange area is divided into several equal sections of different profiles, the profile difference being expressed essentially at a different angle with respect to the central perpendicular of the plates. This is done by assembling corresponding embossing tool sections to produce plates whose profile is sensitive to the different heat exchange rates required. Because different sections of the embossing tool can be easily replaced, the manufacturing costs for the respective embossing tool are favorable.
  • the object of the invention is to provide a design for the soft plates of a plate heat exchanger of the type mentioned at the outset which allows the reversal points within the profiling to be reduced, on the other hand to give the plates a stability comparable to that of hard plates transversely to the direct flow connection mentioned and finally at desired points a "breaking up" of the laminar flow conditions that are formed.
  • the solution to this problem should be possible with the aid of simple tools which are customary for the production of the plates in question.
  • this object is achieved according to the invention in that the section is as short as possible and so positioned in the direction of flow that it effectively interrupts the laminar flow which forms in the central heat exchange region and that the plate profiling of the central heat exchange region unites Has an angle below 45 ° with respect to the direct flow connection between the triangular heat exchange areas and the section has an angle above 45 °. It may also be expedient here that the profiling of the section is closer to one another at the spacing of its waves than the remaining profiling of the central heat exchange region.
  • the short belts in the manner of a hard plate result in an effective disturbance of laminar flow patterns of the soft plates which form, these disturbances being able to be positioned such that the number and arrangement of the belts mentioned are appropriate they always occur when an almost laminar flow has developed on the soft plates.
  • Another advantage of the design according to the invention is that the pressure loss resulting from the belt in the manner of a harder plate embossing is fully converted into heat transfer performance.
  • the overall hardness of the flow space formed in this way, or the heat conduction that can be transferred at the same flow rate between adjacent plates, increases somewhat, which enables a smaller total area of the heat exchange area from the associated better heat transfer.
  • the production of the “soft” plates according to the invention is extremely cost-effective, since the above-mentioned hard embossing belts can be easily used within the embossing tool as sections of a tool for producing hard embossing plates. These belts can be manufactured as a tool part in the usual way, as is the case for so-called hard plates.
  • the central heat exchange area and the short section have a V-shaped profile with a reversal point on the plate center located transversely to the direct flow connection. This is due to reasons of symmetry.
  • the design according to the invention makes it possible to reduce the reversal points or deflection points of the profiling to such a point.
  • the profiling of the central heat exchange region has an angle in relation to the direct flow connection in the region of 30 ° and the profiling of the short sections in the region of 60 °.
  • Fig. 1 shows a plate 1 of a plate heat exchanger with a substantially rectangular configuration.
  • the plate has a central heat exchange region 2 and adjoining it at both ends, essentially triangular heat exchange region 3, 4, within which inlet and outlet openings 5, 6, 7, 8 are arranged in the corner regions of the plate 1.
  • the central heat exchange area has a symmetrical profile 10 with respect to the direct or main flow direction 9, which at the same time essentially coincides with the vertical central longitudinal axis of the plate 1, and which, as can be seen from the axis 9, has an angle below 45 °.
  • the soft profiling 10 corresponding to the statements made at the beginning is interrupted twice at 11 in the course of the vertical of the plate 1 by a direction of flow between the openings 5, 6 of a short section of such a plate profiling, the angle of which with respect to the vertical 9 is above 45 °.
  • This profiling is also arranged symmetrically with respect to the vertical central longitudinal axis so that the kink of the profiling lies on this vertical axis 9.
  • a peripheral seal 20 is arranged such that in the case of FIG. 1, the medium flowing there on the side of the plate facing the viewer moves between openings 5, 6 and is blocked off from openings 7, 8, while in the case of the counter plate according to Fig. 2, the corresponding seal 20 is arranged so that on the next flow gap, the other medium between the openings 7, 8 flows in a sealed off form with respect to the openings 5, 6.
  • Fig. 3 shows the exploded view of several adjacent plates according to FIGS. 1 and 2, that is plates with a "soft" embossing pattern for large mass throughputs with low heat exchange between the merged media, which in the sketched flow pattern on the one hand according to the flow line 14, 15 and on the other hand according to the Flow line 16, 17 flow in and out.
  • the hard embossing 11 arranged transversely to the vertical 9 does not come to rest on adjacent plates, but on the other hand is arranged in sufficient numbers over the height of the plates that they adhere to suitable points the soft profiles 10 of the central plate areas forming laminar flows are disturbed, on the other hand, the plates transverse to the vertical 9 have sufficient stability with respect to the pressing pressure indicated by the arrows 18, 19, by which the plates are clamped together in a manner known per se to form a package and under which they cross across the vertical line 9 seek to widen.

Claims (5)

  1. Échangeur de chaleur à plaques comportant une multiplicité de plaques sensiblement rectangulaires (1), alignées les unes sur les autres et pourvues, par gaufrage, d'un profil (10) possédant la forme de sommets et de creux d'ondulations, et qui sont serrées, éventuellement de façon amovible, pour former une pile, en étant alternativement pivotées réciproquement de 180°, et moyennant une étanchéité réciproque (20) et moyennant une application des profils (10), devant être dirigés l'un vers l'autre, de plaques voisines (1), et dans lequel les plaques (1) forment entre elles des espaces d'écoulement prévus alternativement pour un premier fluide et pour un second fluide guidé sensiblement parallèlement au précédent, et entourés par la garniture d'étanchéité circonférentielle (20), et qui peuvent être chargés par le fluide respectif, par l'intermédiaire d'ouvertures d'arrivée et de départ alignées entre elles et formées par des passages (5 à 8) ménagés dans les zones de coin des plaques, et dans lequel en outre les plaques (1) possèdent une zone centrale d'échange thermique (2) essentiellement rectangulaire, et deux zones d'échange thermique essentiellement triangulaires (3, 4), qui se raccordent sur deux côtés opposés de la première zone et contiennent les ouvertures d'arrivée et de départ, et dans lequel en outre pour au moins l'une des plaques (1), le profil de la zone centrale d'échange thermique (2) fait un angle par rapport à la liaison directe d'écoulement entre les deux zones d'échange thermique de forme triangulaire (3, 4), et dans lequel, dans le cas de cette plaque (1), le profil (10) de la zone centrale d'échange thermique (2) est interrompu par au moins une section (11), qui dans la direction de la liaison directe d'écoulement (9), s'étend transversalement à cette dernière sur toute la largeur de la plaque et dont le profil fait, par rapport à la liaison directe d'écoulement, un angle plus important que celui du reste du profil, caractérisé en ce que la section (11) est aussi courte que possible lorsqu'on regarde dans la direction d'écoulement et est positionnée de telle sorte qu'elle interrompt de façon effective l'écoulement laminaire qui se forme dans la section centrale d'échange thermique (2) et que le profil (10) de la plaque de la zone centrale d'échange thermique (2) fait un angle inférieur à 45° par rapport à la liaison directe d'écoulement entre les zones d'échange thermique de forme triangulaire (3, 4) et que la section (11) fait un angle supérieur à 45°.
  2. Échangeur de chaleur à plaques selon la revendication 1, caractérisé en ce que la distance des ondulations du profil de la section (11) sont plus rapprochées que dans le reste du profil de la zone centrale d'échange thermique.
  3. Échangeur de chaleur à plaques selon la revendication 1, caractérisé en ce que, dans le cas de plaques voisines (1), les courtes sections (11) sont disposées de telle sorte qu'elles ne possèdent aucun recouvrement réciproque.
  4. Échangeur de chaleur à plaques selon l'une des revendications précédentes, caractérisé en ce que la zone centrale d'échange thermique (2) et la courte section (11) possèdent un profil en V possédant un point de rebroussement situé sur la ligne médiane (9) de la plaque, qui est transversale à la liaison directe d'écoulement.
  5. Échangeur de chaleur à plaques selon l'une des revendications précédentes, caractérisé en ce que le profil (10) de la zone centrale d'échange thermique (2) fait un angle de l'ordre de 30° et le profil des courtes sections (11) un angle de l'ordre de 60° par rapport à la liaison directe d'écoulement.
EP91105123A 1990-06-29 1991-03-30 Echangeur de chaleur à plaques Expired - Lifetime EP0463298B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4020735A DE4020735A1 (de) 1990-06-29 1990-06-29 Plattenwaermeaustauscher
DE4020735 1990-06-29

Publications (2)

Publication Number Publication Date
EP0463298A1 EP0463298A1 (fr) 1992-01-02
EP0463298B1 true EP0463298B1 (fr) 1994-06-22

Family

ID=6409337

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91105123A Expired - Lifetime EP0463298B1 (fr) 1990-06-29 1991-03-30 Echangeur de chaleur à plaques

Country Status (5)

Country Link
EP (1) EP0463298B1 (fr)
JP (1) JP3049450B2 (fr)
AT (1) ATE107763T1 (fr)
DE (2) DE4020735A1 (fr)
DK (1) DK0463298T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106895724A (zh) * 2017-02-24 2017-06-27 江阴市亚龙换热设备有限公司 板式换热器
US11162736B2 (en) 2017-03-10 2021-11-02 Alfa Laval Corporate Ab Plate package, plate and heat exchanger device

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE505225C2 (sv) * 1993-02-19 1997-07-21 Alfa Laval Thermal Ab Plattvärmeväxlare och platta härför
DE4431413C2 (de) * 1994-08-24 2002-10-10 Rehberg Michael Plattenwärmetauscher für flüssige und gasförmige Medien
DE19510847C2 (de) * 1995-03-17 2002-11-21 Michael Rehberg Plattenwärmetauscher
DE19540271C1 (de) * 1995-10-28 1996-11-07 Gea Ecoflex Gmbh Plattenwärmetauscher
DE19948222C2 (de) * 1999-10-07 2002-11-07 Xcellsis Gmbh Plattenwärmetauscher
JP2002107084A (ja) * 2000-09-29 2002-04-10 Hisaka Works Ltd プレート式熱交換器
SE528879C2 (sv) 2005-07-04 2007-03-06 Alfa Laval Corp Ab Värmeväxlarplatta, par av två värmeväxlarplattor samt plattpaket för plattvärmeväxlare
SE534306C2 (sv) 2008-06-17 2011-07-05 Alfa Laval Corp Ab Värmeväxlarplatta och plattvärmeväxlare
JP4827905B2 (ja) * 2008-09-29 2011-11-30 三菱電機株式会社 プレート式熱交換器、及びこれを搭載した空気調和機
SE534765C2 (sv) * 2010-04-21 2011-12-13 Alfa Laval Corp Ab Plattvärmeväxlareplatta och plattvärmeväxlare
JP5710232B2 (ja) * 2010-12-09 2015-04-30 株式会社日阪製作所 プレート式熱交換器
CN102261861B (zh) * 2011-07-16 2013-07-31 山东安源水产股份有限公司 一种板式换热器及在海水养殖中的应用
CN102519281A (zh) * 2011-12-27 2012-06-27 中国科学院广州能源研究所 过冷却板式换热器
KR20160093616A (ko) * 2013-12-05 2016-08-08 스웹 인터네셔널 에이비이 변하는 피치를 가지는 열교환기 판
EP3396293A1 (fr) 2017-04-26 2018-10-31 Alfa Laval Corporate AB Plaque de transfert de chaleur et échangeur de chaleur comprenant une pluralité dedites plaques de transfert de chaleur

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE321492B (fr) * 1968-03-12 1970-03-09 Alfa Laval Ab
GB1339542A (en) * 1970-03-20 1973-12-05 Apv Co Ltd Plate heat exchangers
SE411952B (sv) * 1978-07-10 1980-02-11 Alfa Laval Ab Vermevexlare innefattande ett flertal i ett stativ inspenda vermevexlingsplattor
GB2054817B (en) * 1979-07-26 1983-09-14 Apv Co Ltd Heat exchanger plate
SE8306795D0 (sv) * 1983-12-08 1983-12-08 Alfa Laval Thermal Ab Vermevexlarplatta
SE458805B (sv) * 1985-06-06 1989-05-08 Reheat Ab Plattvaermevaexlare, vari varje platta aer uppdelad i fyra omraaden med sinsemellan olika riktning paa korrugeringarna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106895724A (zh) * 2017-02-24 2017-06-27 江阴市亚龙换热设备有限公司 板式换热器
US11162736B2 (en) 2017-03-10 2021-11-02 Alfa Laval Corporate Ab Plate package, plate and heat exchanger device

Also Published As

Publication number Publication date
JPH04227480A (ja) 1992-08-17
DE4020735C2 (fr) 1992-11-19
EP0463298A1 (fr) 1992-01-02
JP3049450B2 (ja) 2000-06-05
ATE107763T1 (de) 1994-07-15
DE4020735A1 (de) 1992-01-02
DK0463298T3 (da) 1994-08-01
DE59101987D1 (de) 1994-07-28

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