EP1630510B2 - Plattenwärmetauscher - Google Patents

Plattenwärmetauscher Download PDF

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Publication number
EP1630510B2
EP1630510B2 EP04020494.3A EP04020494A EP1630510B2 EP 1630510 B2 EP1630510 B2 EP 1630510B2 EP 04020494 A EP04020494 A EP 04020494A EP 1630510 B2 EP1630510 B2 EP 1630510B2
Authority
EP
European Patent Office
Prior art keywords
plates
heat exchanger
tops
plate
ridges
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.)
Active
Application number
EP04020494.3A
Other languages
English (en)
French (fr)
Other versions
EP1630510B1 (de
EP1630510A1 (de
Inventor
Peter Nilsson
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.)
Swep International AB
Original Assignee
Swep International AB
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34926346&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1630510(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Swep International AB filed Critical Swep International AB
Priority to DK04020494T priority Critical patent/DK1630510T3/da
Priority to ES04020494.3T priority patent/ES2279267T5/es
Priority to SI200430190T priority patent/SI1630510T1/sl
Priority to PT04020494T priority patent/PT1630510E/pt
Priority to AT04020494T priority patent/ATE350639T1/de
Priority to EP04020494.3A priority patent/EP1630510B2/de
Priority to PL04020494T priority patent/PL1630510T5/pl
Priority to DE602004004114.9T priority patent/DE602004004114T3/de
Priority to CNB2005800288713A priority patent/CN100513968C/zh
Priority to AU2005279446A priority patent/AU2005279446C1/en
Priority to JP2007528635A priority patent/JP2008511811A/ja
Priority to PCT/EP2005/007329 priority patent/WO2006024340A1/en
Priority to US11/632,582 priority patent/US20080029257A1/en
Priority to KR1020077002454A priority patent/KR20070048707A/ko
Priority to TW094123481A priority patent/TWI320089B/zh
Priority to MYPI20053424A priority patent/MY136232A/en
Publication of EP1630510A1 publication Critical patent/EP1630510A1/de
Publication of EP1630510B1 publication Critical patent/EP1630510B1/de
Priority to CY20071100426T priority patent/CY1106418T1/el
Publication of EP1630510B2 publication Critical patent/EP1630510B2/de
Application granted granted Critical
Active 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
    • 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
    • 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 present invention relates to a plate heat exchanger comprising at least two separate flow paths for primary and secondary fluids to exchange heat, the said two flow paths being substantially defined by heat exchanger plates interconnected by soldering provided with a herring bone pattern of ridges and depressions and offering different pressure drops at equal mass flows of the two fluids.
  • the inlet temperature of the heating water may be e.g. 75° C, and the outlet temperature thereof may be about 60° C.
  • the inlet temperature of the tap water may be about 10° C and the outlet temperature thereof may be 55° C. This indicates that the mass flow of the heating water must be 2.5 times the mass flow of the tap water. Therefore, it is economical to make the cross section of the flow path for the heating water wider than that of the tap water, e.g. by making the tops of the herring bone pattern flat - and thus wider - while the bottoms are unaltered.
  • This known device is adapted to exchange heat between water and a cooling fluid the water flowing through the flow path having the smaller pressure drop.
  • freezing of water will not cause damage to the plate heat exchanger.
  • the areas of contact between plates will thus be relatively great and lost for the heat exchange between the fluids.
  • the small depressions in the channels guiding the water flow will cause corresponding very narrow flow channels in the flow path for the cooling fluid.
  • the areas of contact between adjacent plates are not rigidly interconnected in order to increase the elasticity of the plate heat exchanger, but the mechanical strength of the exchanger will be rather poor making the exchanger unsuitable for high pressure fluids.
  • the Japanese Patent Application No. 11281283 A also discloses a heat exchanger in which the pressure drops of two heat exchanging fluids are different in case of equal mass flows.
  • the flow paths forming a herring bone pattern comprise channels having greater cross sectional flow area provided with two small secondary depressions in the channels of greater cross section. This involves that the flow path having a total relatively high pressure drop will consist of parts causing very different pressure drops. This is an uneconomical way of using the material in the exchanger for exchanging heat. Also - as the pitch will increase with increasing numbers of the secondary depressions - the mechanical strength of the exchanger will decrease due to the smaller numbers of contact points at which the plates could be rigidly connected.
  • the object of the present invention is to design an "asymmetric" plate heat exchanger in which the material of the plates is used in a more economic way and thus in which the efficiency is improved while maintaining a high mechanical strength of the exchanger
  • a plate heat exchanger comprising at least two separate paths for primary and secondary fluids to exchange heat, the said two flow paths being substantially defined by heat exchanger plates provided with a herring bone pattern of ridges and depressions, the herring bone pattern of two plates being mirror images of each other, wherein each other plate should be turned 180 degrees in its plane relative the adjacent plates, and offering different pressure drops at equal mass flows of the two fluids, wherein the depressions in at least some pairs of plates defining the flow path having the lower pressure drop at least partly are alternatively of two different press depths ( D 1 , D 2 ) measured from the plan defined by the tops of the ridges of the herring bone pattern of the heat exchanger plate, the smaller ( D 2 ) being located between two tops of the herring bone pattern and being at least 40% of the greater ( D 1 ), is characterised in that the heat exchanger plates are interconnected by soldering and that the tops of the ridges engaging the tops of a neighbouring plate to define a flow channel having high pressure drop substantially
  • Figure 1 is a plan view of a plate 1 of a known and widely used plate heat exchanger provided with a herring bone pattern of ridges 2 and depressions 3.
  • a stack of plates of this type is formed after turning each other plate in the stack in its plane.
  • Figure 2 illustrates how the ridges and depressions then will cross each other.
  • Fig. 3 - which is a section along the line A-A in Fig. 1 - illustrates the pitch P and the press depth D both values being of importance for characterising the plate heat exchanger.
  • Fig. 4 is a section along the line B-B of Fig. 2 through four plates in a heat exchanger according to the Figures 1-3 .
  • the two flows of heat exchanging fluids limited by the plates are shown by different hatching. It will be understood that the two flow paths are offering equal pressure drops at equal mass flows.
  • Fig. 6 shows a prior art plate heat exchanger according to the Japanese Patent Application No. 11173771 which shows a plate heat exchanger of the "asymmetric" type in which the pairs of plates limiting the flow path having the greater cross sectional area are provided with depressions of less depths D 2 than the press depths D 1 of tops of the ridges of the herring bone pattern. This has been done in order to make the plate heat exchanger more resistant against damage caused by ice formations. The plan contact areas between the plates and not used for heat exchange are still existing in this embodiment.
  • Fig. 8 shows a section corresponding to the sections shown in Figs. 4-7 through two heat exchanger plates according to the present invention.
  • a primary press depth press depth - i. e. the distance between the plan defined by the tops of the ridges and the lowest plan defined by bottoms of ridges - has been indicated as D 1 .
  • a secondary press depth defined as the distance between the plan of the tops of the ridges of the herring bone pattern and a plan of the bottom of minor depressions has been designated by D 2 .
  • the pitch of the herringbone pattern has been indicated by P .
  • FIG. 9 is a section through four plates 4, 5, 6 and 7 of the types shown in Fig. 8 and corresponding to the sections C-C shown in Figs. 4-7 .
  • the three channels formed for the flows exchanging heat are shown by two different hatchings. It will be understood from Fig. 9 that the resistance for the flow limited by the plates 5 and 6 is higher than the resistance for the flow limited by the plates 4 and 5 or 6 and 7.
  • the contact areas between the plates are kept at a minimum, but the number of contacts at which the plates are interconnected by soldering is substantial and will give mechanical strength to the heat exchanger. It is essential to maintain a substantial mass flow of fluid through the cross sections designed by 8 in Fig. 9 .
  • the mass flow through the area 8 is nearly proportional to its cross sectional area and this is in turn mainly dependant on the magnitude of the press depth D 2 .
  • a small press depth D 2 - e.g. as shown in Fig. 7 - will make the areas 8 small and may almost block passage of fluid.
  • a small secondary press depth will the have nearly the same effect as the large contact areas between the ridges of the herring bone pattern shown in Fig. 5 .

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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)
  • Fuel Cell (AREA)

Claims (1)

  1. Plattenwärmetauscher, umfassend wenigstens zwei separate Strömungswege für primäre und sekundäre Fluide zum Wärmetausch, wobei die beiden Strömungswege im Wesentlichen durch Wärmetauscherplatten (4-7) definiert sind, die mit fischgrätenartig angeordneten Erhöhungen und Vertiefungen (2, 3) versehen sind, wobei die Fischgrätenstrukturen von zwei Platten (4, 5) Spiegelbilder voneinander sind und jede andere Platte um 180° in ihrer Ebene bezüglich den benachbarten Platten zu drehen ist, und unterschiedliche Druckabfälle bei gleichen Masseflüssen der beiden Fluide bereitstellen, wobei die Vertiefungen in wenigstens einigen Plattenpaaren, die den Strömungsweg mit dem geringeren Druckabfall definieren, wenigstens teilweise alternativ aus zwei unterschiedlichen Presstiefen (D1, D2) bestehen, gemessen von der Ebene, die durch die Oberseiten der Erhöhungen der Fischgrätenstruktur der Wärmetauscherplatten definiert wird, wobei sich die kleineren (D2) zwischen zwei Oberseiten der Fischgrätenstruktur befinden und wenigstens 40 % der größeren (D1) betragen, dadurch gekennzeichnet, dass die Wärmetauscherplatten (4-7) miteinander verlötet sind, und dadurch, dass die Oberseiten der Erhöhungen, welche die Oberseiten einer benachbarten Platte dergestalt in Eingriff nehmen, dass ein Strömungskanal definiert wird, der einen hohen Druckabfall aufweist, einander im Wesentlichen entlang Punkten berühren, die durch Kreuzungslinien definiert sind.
EP04020494.3A 2004-08-28 2004-08-28 Plattenwärmetauscher Active EP1630510B2 (de)

Priority Applications (17)

Application Number Priority Date Filing Date Title
DK04020494T DK1630510T3 (da) 2004-08-28 2004-08-28 Pladevarmeveksler
ES04020494.3T ES2279267T5 (es) 2004-08-28 2004-08-28 Un intercambiador de calor de placas
SI200430190T SI1630510T1 (sl) 2004-08-28 2004-08-28 Ploščnat izmenjevalnik toplote
PT04020494T PT1630510E (pt) 2004-08-28 2004-08-28 Permutador de calor de placas.
AT04020494T ATE350639T1 (de) 2004-08-28 2004-08-28 Plattenwärmetauscher
EP04020494.3A EP1630510B2 (de) 2004-08-28 2004-08-28 Plattenwärmetauscher
PL04020494T PL1630510T5 (pl) 2004-08-28 2004-08-28 Płytowy wymiennik ciepła
DE602004004114.9T DE602004004114T3 (de) 2004-08-28 2004-08-28 Plattenwärmetauscher
JP2007528635A JP2008511811A (ja) 2004-08-28 2005-07-07 プレート式熱交換器
AU2005279446A AU2005279446C1 (en) 2004-08-28 2005-07-07 A plate heat exchanger
CNB2005800288713A CN100513968C (zh) 2004-08-28 2005-07-07 板式换热器
PCT/EP2005/007329 WO2006024340A1 (en) 2004-08-28 2005-07-07 A plate heat exchanger
US11/632,582 US20080029257A1 (en) 2004-08-28 2005-07-07 Plate Heat Exchanger
KR1020077002454A KR20070048707A (ko) 2004-08-28 2005-07-07 판형 열교환기
TW094123481A TWI320089B (en) 2004-08-28 2005-07-12 A plate heat exchanger
MYPI20053424A MY136232A (en) 2004-08-28 2005-07-26 A plate heat exchanger
CY20071100426T CY1106418T1 (el) 2004-08-28 2007-03-27 Ενας μετατροπεας θepμοτητας με μορφη πλακας

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04020494.3A EP1630510B2 (de) 2004-08-28 2004-08-28 Plattenwärmetauscher

Publications (3)

Publication Number Publication Date
EP1630510A1 EP1630510A1 (de) 2006-03-01
EP1630510B1 EP1630510B1 (de) 2007-01-03
EP1630510B2 true EP1630510B2 (de) 2014-03-05

Family

ID=34926346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04020494.3A Active EP1630510B2 (de) 2004-08-28 2004-08-28 Plattenwärmetauscher

Country Status (17)

Country Link
US (1) US20080029257A1 (de)
EP (1) EP1630510B2 (de)
JP (1) JP2008511811A (de)
KR (1) KR20070048707A (de)
CN (1) CN100513968C (de)
AT (1) ATE350639T1 (de)
AU (1) AU2005279446C1 (de)
CY (1) CY1106418T1 (de)
DE (1) DE602004004114T3 (de)
DK (1) DK1630510T3 (de)
ES (1) ES2279267T5 (de)
MY (1) MY136232A (de)
PL (1) PL1630510T5 (de)
PT (1) PT1630510E (de)
SI (1) SI1630510T1 (de)
TW (1) TWI320089B (de)
WO (1) WO2006024340A1 (de)

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DE102022118344A1 (de) 2021-07-26 2023-01-26 Vacuumschmelze Gmbh & Co. Kg Hartlotfolie, Gegenstand sowie Verfahren zum Hartlöten
US12044486B2 (en) 2016-10-07 2024-07-23 Alfa Laval Corporate Ab Heat exchanging plate and heat exchanger

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EP3306253A1 (de) 2016-10-07 2018-04-11 Airec Ab Wärmetauscherplatte und wärmetauscher
US12044486B2 (en) 2016-10-07 2024-07-23 Alfa Laval Corporate Ab Heat exchanging plate and heat exchanger
EP3351886A1 (de) 2017-01-19 2018-07-25 Airec Ab Wärmetauscherplatte und wärmetauscher
WO2018133954A1 (en) 2017-01-19 2018-07-26 Airec Ab Heat exchanging plate and heat exchanger
US10989482B2 (en) 2017-01-19 2021-04-27 Alfa Laval Corporate Ab Heat exchanging plate and heat exchanger
DE102022118344A1 (de) 2021-07-26 2023-01-26 Vacuumschmelze Gmbh & Co. Kg Hartlotfolie, Gegenstand sowie Verfahren zum Hartlöten

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KR20070048707A (ko) 2007-05-09
CN101069058A (zh) 2007-11-07
JP2008511811A (ja) 2008-04-17
TW200607971A (en) 2006-03-01
EP1630510B1 (de) 2007-01-03
DE602004004114T3 (de) 2014-07-24
US20080029257A1 (en) 2008-02-07
TWI320089B (en) 2010-02-01
WO2006024340A1 (en) 2006-03-09
ES2279267T3 (es) 2007-08-16
PT1630510E (pt) 2007-04-30
ES2279267T5 (es) 2014-06-11
PL1630510T3 (pl) 2007-05-31
ATE350639T1 (de) 2007-01-15
PL1630510T5 (pl) 2014-07-31
CN100513968C (zh) 2009-07-15
SI1630510T1 (sl) 2007-06-30
DE602004004114T2 (de) 2007-07-12
DE602004004114D1 (de) 2007-02-15
DK1630510T3 (da) 2007-04-23
AU2005279446C1 (en) 2014-06-12
CY1106418T1 (el) 2011-10-12
EP1630510A1 (de) 2006-03-01
MY136232A (en) 2008-08-29
AU2005279446B2 (en) 2010-02-18

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