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WO1999067591A1 - Echangeur de chaleur a plaques - Google Patents

Echangeur de chaleur a plaques Download PDF

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Publication number
WO1999067591A1
WO1999067591A1 PCT/AT1999/000162 AT9900162W WO9967591A1 WO 1999067591 A1 WO1999067591 A1 WO 1999067591A1 AT 9900162 W AT9900162 W AT 9900162W WO 9967591 A1 WO9967591 A1 WO 9967591A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
heat exchange
notches
heat exchanger
flow
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.)
Ceased
Application number
PCT/AT1999/000162
Other languages
German (de)
English (en)
Inventor
Harald Fischer
Gerhard BRÖCKL
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.)
FISCHER MASCHINEN- und APPARATEBAU AG
Original Assignee
FISCHER MASCHINEN- und APPARATEBAU 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 FISCHER MASCHINEN- und APPARATEBAU AG filed Critical FISCHER MASCHINEN- und APPARATEBAU AG
Priority to AU42487/99A priority Critical patent/AU4248799A/en
Publication of WO1999067591A1 publication Critical patent/WO1999067591A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
    • F28F3/046—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element the deformations being linear, e.g. corrugations
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/10—Secondary fins, e.g. projections or recesses on main fins

Definitions

  • the invention relates to a plate heat exchanger having at least three heat exchange plates, which are pressed together from one another with the interposition of seals, and which have wave profiles in their heat-exchanging central parts which run obliquely to the plate axis, the wave profiles of adjacent heat exchange plates crossing and supporting one another, and at least two different plate shapes with regard to one another the middle part shape is available.
  • Such plate heat exchangers are used for heat exchange between mostly liquid media and they consist of at least three, but mostly of a large number of individual, removable heat exchange plates made of pressed sheet metal, the liquid-contacting middle part of which is surrounded by a seal which sits in an edge groove.
  • the individual heat exchange plates are usually held together by means of two outer, solid plates using clamping screws.
  • the efficiency of a heat exchanger is primarily determined by the design of the heat exchange profile. Ideally, this profile should generate a high level of turbulence in order to optimally design the heat transfer, but on the other hand only cause a low flow resistance in order to keep the energy requirement of the feed pumps that convey the media low.
  • Another essential requirement for the heat exchange profile is that it is designed in such a way that there is a stable support between adjacent heat exchange plates, which ensures that the plate spacing remains constant in the event of pressure differences in the individual flow channels.
  • the present invention is based on the object, starting from a plate heat exchanger, are used in the heat exchange plates of the same layer thickness with intersecting shafts that support each other on both sides, yet allow different flow cross-sections and thus different flow characteristics for the media in heat exchange.
  • the plate heat exchanger according to the invention of the type mentioned at the outset is characterized in that at least one heat exchange plate has notches on at least some of the wave profiles, which form flow passages, and between which the wave profile defines support points for the adjacent heat exchange plate.
  • flow channels with different flow characteristics are thus formed using two types of heat exchange plates, in that the plates, which are provided with numerous, oblique to the flow direction, wave-shaped expressions, the height of which is equal to the plate spacing, are additionally provided with notches.
  • the notches form additional flow passages, the flow resistance and thus the pressure loss is reduced.
  • the fact that the notches on the other hand can be arranged without problems between the support points, the shaft crossing points, in each case adjacent heat exchange plates, also maintains the high strength of the plate composite. Overall, this creates the possibility of giving the heat exchanger a significantly different flow characteristic for one medium than for the other medium, for example by alternating plates with and plates without notches. be lined up.
  • the different flow characteristics are caused by two effects:
  • the plate heat exchanger according to the invention also has the advantage that the heat exchange plates with corrugation and notches favor the efficiency, and that large and small flow channels can be obtained even with the same plate layer thickness, in which not only flow velocities of different sizes, but also turbulences of different sizes prevail.
  • Another advantage of the design of the plate heat exchanger according to the invention can be seen in the fact that the flow channels, which are large on one side, allow even large solid particles to flow through the medium without forced deflection and without the associated increased risk of relocation.
  • a decisive advantage is the constant number of support points for both flow channels as well as the simplicity and the associated low manufacturing costs of the pressing tool.
  • DE 32 44 547 A discloses a heat exchanger with heat exchange plates which are profiled in a wave-like manner, with notches being provided in the corrugation.
  • the wave crests or wave troughs here run horizontally, so that adjacent heat exchange plates with the flattened wave crests lie against one another, and without others Measures no flow for the heat exchange media would be possible.
  • the notches in the horizontal wave crests accordingly serve to provide a flow passage from top to bottom or vice versa between two adjacent heat exchange plates; it is also not intended to use the notches to provide different flow cross sections or flow resistances, rather the flow channels created should be dimensioned such that the volumes of the partial flows are of equal size.
  • a plate heat exchanger with corrugated heat exchange plates is known from AT 358 609 B, the corrugations running obliquely and thus crossing the waves from adjacent heat exchange plates as already described above; in addition, comparatively small grooves are to be superimposed on the corrugation, which, however, do not serve as a means of influencing the flow channels, but rather are intended to stiffen or increase the strength of the heat exchange plates. There is no provision for influencing the flow behavior through these fine grooves, and in particular the grooves, since they are present on all corrugations, cannot lead to different flow characteristics with different heat exchange plate pairs.
  • the notches can in each case only be provided on some specific wave profiles, but it is advantageous for a uniform influencing of the flow characteristics over the entire height of the heat exchange plates if all wave profiles of the at least one heat exchange plate are provided with notches.
  • At least one heat exchange plate has notches of different sizes on at least one wave profile.
  • At least one heat exchange plate is provided with notches of different sizes on different wave profiles, preferably the notches in the flow direction become smaller across the wave profiles.
  • the notches have a depth of 1/4 to 1/2 the height of the wave profiles.
  • the notches can be defined in terms of their size and number depending on the desired flow characteristics, with reference to the wave crossing points, i.e. the points of mutual support of the heat exchange plates must be taken into account. Accordingly, the length of the notches, measured in the direction of the wave profiles, must be determined in such a way that the desired support points are retained, which depends on the inclination of the corrugations on the one hand and on the width of the wave profiles on the other. In practice, an embodiment in which the notches have a length, measured in the direction of the wave profiles, of 6 mm to 18 mm has proven to be particularly efficient. In particular, the notches have a length of 8 mm to 11 mm. The oblique course of the waves is preferably set in an angular range of 35 ° to 15 °.
  • Fig.l is a plan view of a conventional heat exchange plate; 2 shows a schematic section through the middle part of this heat exchange plate, along the line II-II in Fig.l;
  • FIG. 3 shows a plan view of a heat exchange plate with notches, which is to be combined with the heat exchange plate according to FIG. 1, wherein plates according to FIG. 1 and those according to FIG. 3 are to be layered alternately in a package, as is usual, to the plate heat exchanger ;
  • FIG. 4 shows a schematic section through the central part of the heat exchange plate according to FIG. 3, specifically along the line IV-IV in FIG. 3;
  • FIG. 5 shows a schematic sectional view according to a wave profile, along the line V-V in Fig.l;
  • Figure 6 shows schematically a cross section along the line VI-VI in Figure 5, to illustrate the corrugation in this heat exchange plate according to Fig.l;
  • FIG. 7 shows, in a corresponding sectional view along a wave profile, along the line VII-VII in FIG. 3, the notched wave profile of the wave exchange plate according to FIG. 3;
  • Figure 8 in a cross section similar to Figure 6, along the line VIII-VIII in Figure 7, the corrugation or the notches in this heat exchange plate according to Figure 3;
  • FIGS. 9 schematically, in a sectional illustration similar to that according to FIGS. 5 and 7, a succession of the two plate types according to FIGS. 1 and 3;
  • FIG. 11 shows a schematic sectional illustration similar to that of FIG. 9, a succession of heat exchange plates, which are alternately provided with notches of different depths;
  • Figure 13 is a plan view similar to Figure 3, a modified heat exchange plate
  • FIG. 14 shows a schematic sectional illustration, along the line XIV-XIV in FIG. 13, of a stack of such heat exchange plates according to FIG. 13; which successively counter each other by 180 ° are twisted;
  • FIGS. 1 and 3 show heat exchange plates 1 and 2 according to a currently particularly preferred embodiment, the middle parts 3 that come into contact with the liquid are surrounded by a seal 4.
  • the seal 4 is located in an edge groove 5, cf. in particular also FIGS. 5 and 7.
  • Shafts 6 and 6a which run obliquely to the longitudinal axis 7 of the respective heat exchange plate 1 and 2, are arranged in each central part 3 and thus run at an angle a to the transverse axis 8, the shafts and profiles 6, 6a cross one another when the heat exchange plates run to the transverse axis 8, the shafts or profiles 6, 6a cross one another when the heat exchange plates 1, 2 are placed one above the other.
  • This is known per se, so that a further description and in particular a description of the entire structure of the plate heat exchanger can be superfluous in this regard.
  • FIGS. 7 and 8 show corresponding sections through the wave profile of the other plate type 2 according to FIG. 3. It can be seen, also in connection with FIG. 3, that the shafts 6a are interrupted by numerous notches 11 arranged on one side, so that the shafts 6a continuously reach the lower theoretical limit plane 9 in FIG. 7, but the upper one theoretical boundary plane 10 is only reached at the points required for the spacing, the support or crossing points 12.
  • the angle ⁇ here is, for example, 15 ° to 35 °.
  • flow channels 13 each form between the boundary plane 9 of one plate 1 and the notches 11 of the other plate 2, which enable the medium flowing between these plates 1, 2 to pass in a straight line.
  • FIG. 10 a cross section XX through this plate pack according to FIG. 9, formed from plates 1-2-1-2, illustrates how, according to the notches 11 of the plates 2 that are present on one side, flow channel cross sections of different sizes, namely a channel enlargement 14 and a Channel constriction 15 can be obtained.
  • FIG. 11 shows a section through four heat exchange plates 2 '-2-2' -2, all of which are provided with notches 11 and 11 'arranged on one side, but with different sizes.
  • the notches 11' are larger (deeper) than the notches 11 of plate type 2.
  • Flow channels 14 and 15 of different sizes are also achieved in this way, a straight-line flow without forced deflection being made possible for part of the medium flowing in the narrower flow channel 14 by the arrangement of the notches 11 '.
  • FIG. 13 shows a heat exchange plate 2a, in which the individual flow paths 18a to 18e have a very different length between the inlet opening 16 and the outlet opening 17, in particular with larger widths of the heat exchange plates. This would result in a different flow rate due to the different flow resistance for the individual flow channels 18a to 18e, which leads to an increased pressure loss and furthermore to poor heat transfer values.
  • Fig. 14 shows a plate pack formed from such heat exchange plates 2a, 2a 'according to Fig.3.
  • the plates 2a 1 lie in the plate pack rotated by 180 ° relative to the plates 2a.
  • the length of the wave profiles 6 and 6a measured along the section line V-V and VII-VII, was 120 mm to 300 mm, and the angle a was 25 °.
  • the notches 11 had a length of 8 mm to 11 mm and a depth of 1.2 mm to 1.6 mm; in the embodiment of Figures 11 and 12, the notches 11 'and 11 had a length of 2 mm and a depth of 1.6 mm and 0.8 mm, respectively.

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)

Abstract

L'invention concerne un échangeur de chaleur à plaques comprenant au moins trois plaques (1, 2, 2', 2a, 2a', 2b) en tôle formées par compression. Ces plaques sont juxtaposées en étant séparées par des garnitures d'étanchéité (4). Elles présentent dans leur partie centrale (3) des profilés ondulés (6, 6a) obliques par rapport à l'axe des plaques (7). Les profilés ondulés de plaques adjacentes se croisent et se servent d'appui. Au moins une plaque (2,2') présente, au moins au niveau de certains profilés ondulés (6a), d'un côté des rainures (11, 11') qui forment des passages d'écoulement, et entre lesquelles le profilé ondulé (6a) définit des points d'appui (12) pour la plaque adjacente (1).
PCT/AT1999/000162 1998-06-24 1999-06-21 Echangeur de chaleur a plaques Ceased WO1999067591A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU42487/99A AU4248799A (en) 1998-06-24 1999-06-21 Plate heat exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT109998A AT406301B (de) 1998-06-24 1998-06-24 Plattenwärmetauscher
ATA1099/98 1998-06-24

Publications (1)

Publication Number Publication Date
WO1999067591A1 true WO1999067591A1 (fr) 1999-12-29

Family

ID=3506577

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT1999/000162 Ceased WO1999067591A1 (fr) 1998-06-24 1999-06-21 Echangeur de chaleur a plaques

Country Status (3)

Country Link
AT (1) AT406301B (fr)
AU (1) AU4248799A (fr)
WO (1) WO1999067591A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001065C2 (de) * 2000-01-13 2002-11-21 Ballard Power Systems Plattenstapel-Wärmeübertrager, insbesondere zur Verwendung als Reformierungsreaktor
EP1555500A3 (fr) * 2004-01-13 2007-03-28 Econ Export + Consulting Group GmbH Echangeur de chaleur
ITPD20130187A1 (it) * 2013-07-03 2015-01-04 Zilmet S P A Scambiatore asimmetrico con canali ausiliari di collegamento fra spire
US10903537B2 (en) 2019-01-31 2021-01-26 Toyota Motor Engineering & Manufacturing North America, Inc. Optimized heat conducting member for battery cell thermal management

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10220532A1 (de) 2001-05-11 2002-11-14 Behr Gmbh & Co Wärmetauscher
DE20114850U1 (de) * 2001-09-07 2003-01-16 Behr Gmbh & Co, 70469 Stuttgart Wärmetauscher
PL73432Y1 (pl) * 2019-01-04 2024-04-22 Secespol Spolka Z Ograniczona Odpowiedzialnoscia Płyta grzewcza z powierzchnią wymiany ciepła płytowego wymiennika ciepła

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE835894C (de) * 1942-12-23 1952-04-07 Bergedorfer Eisenwerk A G Astr Plattenwaermeaustauscher
US3661203A (en) * 1969-11-21 1972-05-09 Parkson Corp Plates for directing the flow of fluids
AT343699B (de) 1976-02-12 1978-06-12 Helmut Ing Fischer Plattenwarmeaustauscher
EP0014066A1 (fr) * 1979-01-17 1980-08-06 Alfa-Laval Ab Echangeur de chaleur du type à plaques
AT358609B (de) 1977-01-14 1980-09-25 Munters Ab Carl Waermetauscher fuer ein gasfoermiges und ein fluessiges medium
DE3244547A1 (de) 1982-12-02 1984-06-07 Gea Ahlborn Gmbh & Co Kg, 3203 Sarstedt Waermeaustauscher
US4605060A (en) * 1981-11-26 1986-08-12 Alfa-Laval Ab Heat exchanger plate
EP0526679A1 (fr) 1991-07-08 1993-02-10 Apv Baker As Echangeur de chaleur avec des plaques à parois multiples
WO1993025860A1 (fr) * 1992-06-12 1993-12-23 Alfa-Laval Thermal Ab Echangeur de chaleur a plaques pour liquides circulant a debits differents

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT393162B (de) * 1987-07-13 1991-08-26 Broeckl Gerhard Ing Plattenwaermeaustauscher mit besonderem profil der waermeaustauschzone

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE835894C (de) * 1942-12-23 1952-04-07 Bergedorfer Eisenwerk A G Astr Plattenwaermeaustauscher
US3661203A (en) * 1969-11-21 1972-05-09 Parkson Corp Plates for directing the flow of fluids
AT343699B (de) 1976-02-12 1978-06-12 Helmut Ing Fischer Plattenwarmeaustauscher
AT358609B (de) 1977-01-14 1980-09-25 Munters Ab Carl Waermetauscher fuer ein gasfoermiges und ein fluessiges medium
EP0014066A1 (fr) * 1979-01-17 1980-08-06 Alfa-Laval Ab Echangeur de chaleur du type à plaques
US4605060A (en) * 1981-11-26 1986-08-12 Alfa-Laval Ab Heat exchanger plate
DE3244547A1 (de) 1982-12-02 1984-06-07 Gea Ahlborn Gmbh & Co Kg, 3203 Sarstedt Waermeaustauscher
EP0526679A1 (fr) 1991-07-08 1993-02-10 Apv Baker As Echangeur de chaleur avec des plaques à parois multiples
WO1993025860A1 (fr) * 1992-06-12 1993-12-23 Alfa-Laval Thermal Ab Echangeur de chaleur a plaques pour liquides circulant a debits differents

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10001065C2 (de) * 2000-01-13 2002-11-21 Ballard Power Systems Plattenstapel-Wärmeübertrager, insbesondere zur Verwendung als Reformierungsreaktor
EP1555500A3 (fr) * 2004-01-13 2007-03-28 Econ Export + Consulting Group GmbH Echangeur de chaleur
ITPD20130187A1 (it) * 2013-07-03 2015-01-04 Zilmet S P A Scambiatore asimmetrico con canali ausiliari di collegamento fra spire
WO2015001506A1 (fr) * 2013-07-03 2015-01-08 Zilmet Spa Echangeur asymétrique comportant des canaux auxiliaires pour relier des courbures
US10903537B2 (en) 2019-01-31 2021-01-26 Toyota Motor Engineering & Manufacturing North America, Inc. Optimized heat conducting member for battery cell thermal management

Also Published As

Publication number Publication date
ATA109998A (de) 1999-08-15
AU4248799A (en) 2000-01-10
AT406301B (de) 2000-04-25

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