EP1394491B1 - Echangeur de chaleur à plaques - Google Patents

Echangeur de chaleur à plaques Download PDF

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Publication number
EP1394491B1
EP1394491B1 EP03017674A EP03017674A EP1394491B1 EP 1394491 B1 EP1394491 B1 EP 1394491B1 EP 03017674 A EP03017674 A EP 03017674A EP 03017674 A EP03017674 A EP 03017674A EP 1394491 B1 EP1394491 B1 EP 1394491B1
Authority
EP
European Patent Office
Prior art keywords
plates
heat exchanger
plate heat
uneven
ducts
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
EP03017674A
Other languages
German (de)
English (en)
Other versions
EP1394491A3 (fr
EP1394491A2 (fr
Inventor
Giuseppe Sella
Giovanni Antonio Longo
Roberto Sartori
Bruno Benetton
Giorgio Lunardi
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.)
ONDA SpA
Original Assignee
ONDA SpA
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 ONDA SpA filed Critical ONDA SpA
Publication of EP1394491A2 publication Critical patent/EP1394491A2/fr
Publication of EP1394491A3 publication Critical patent/EP1394491A3/fr
Application granted granted Critical
Publication of EP1394491B1 publication Critical patent/EP1394491B1/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
    • F28F3/02—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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • F28F13/185—Heat-exchange surfaces provided with microstructures or with porous coatings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/4935—Heat exchanger or boiler making

Definitions

  • the present invention relates to a plate heat exchanger, particularly but not exclusively useful for condensing and evaporating refrigerating fluids.
  • plate heat exchangers are devices used to transfer heat energy from one fluid to another and are constituted by a plurality of mutually facing metal plates shaped so as to form, in the spaces between two adjacent plates, a corresponding plurality of passage circuits for the fluids.
  • the plates are usually rectangular, are commonly obtained by pressing and have appropriate corrugations, substantially in the central region, and generally have four openings at their corners.
  • the corrugations are designed to stiffen the plates and to improve heat exchange, while the openings are designed to provide the ducts for the distribution and recovery of the fluids.
  • the plates are sealed at their perimeter and at their input and output ducts by means of gaskets or by welding and/or braze welding, so as to prevent the escape of the fluids from the respective ducts and from the circuits formed between the facing plates.
  • Operation of plate heat exchangers consists in producing the alternating flow, in the passage circuits, of a refrigerating fluid, which evaporates or condenses, and of a heat transfer fluid, which becomes cooler or warmer.
  • EP-1094291 discloses a plate heat exchanger having a combination of features as set forth in the pre-characterizing portion of the appended claim 1.
  • the aim of the present invention is to provide a plate heat exchanger with improved performance with respect to exchangers currently in use while maintaining a low production cost and achieving high reliability and durability.
  • the plate heat exchanger generally designated by the reference numeral 1, comprises a plurality of mutually facing plates 2 and generally at least two ducts, an input duct 3a and an output duct 3b, for a respective fluid.
  • the plates 2 are coupled hermetically to each other at a substantially peripheral portion 4 and at the ducts 3 a and 3b by braze welding.
  • Each plate 2 has, as shown more clearly in Figure 2 , a main corrugation arranged in a herringbone pattern, which is adapted to increase and facilitate the exchange of heat among passage circuits formed between two adjacent plates 2.
  • At least one of the plates 2 has at least one face that comprises at least one uneven portion 5.
  • Said portion 5 is uneven thanks to the presence of microengravings and/or microgrooves and/or microindentations.
  • each plate 2 has at least one completely uneven face.
  • the adjacent plates 2 are assembled so that their completely or partially uneven faces form at least the ducts for the refrigerating fluid.
  • the uneven portion 5 of the plates 2 is obtained by laser alteration.
  • microengravings and/or microgrooves and/or microindentations on the exchange surface in fact increases the area of the exchange surface, increases the turbulence of the fluid in contact with the exchange surface, facilitates the drainage of the liquid along the exchange surface in condensation processes and bubble nucleation the evaporation processes.
  • the materials used may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Fuel Cell (AREA)

Claims (3)

  1. Echangeur de chaleur sous forme de plaque (1) comprenant une pluralité de plaques (2) se faisant mutuellement face, qui sont hermétiquement couplées à au moins une partie sensiblement périphérique (4) et qui forment au moins deux circuits séparés, destinés à deux fluides au moins, chacune des plaques de ladite pluralité de plaques (2) comportant des orifices d'accès constituant des conduits d'entrée (3a) et des conduits de sortie (3b) pour lesdits au moins deux fluides, lesdites plaques (2) comprenant un rainurage principal permettant un échange accru de chaleur parmi lesdits circuits formés entre des plaques adjacentes (2),
    ledit rainurage principal étant disposé selon un motif à chevrons et les plaques de ladite pluralitè de plaques (2) étant assemblées l'une à l'autre par brasage au niveau de ladite partie
    périphérique (4) et au niveau des conduits (3a, 3b), caractérisé en ce que
    au moins une partie (5) d'au moins une face d'au moins une desdites plaques (2) de ladite pluralité de plaques est inégale grâce à la présence de microgravures, de microrainures et/ou de micro-indentations formées au sommet du rainurage principal par travail au laser.
  2. Echangeur de chaleur sous forme de plaque selon la revendication 1, caractérisé en ce que ladite au moins une face dotée d'au moins une partie inégale (5) forme, conjointement avec la plaque adjacente respective (2) lui faisant face, l'un desdits au moins deux circuits.
  3. Echangeur de chaleur sous forme de plaque selon au moins une des revendications précédentes, caractérisé en ce qu'au moins une face de chacune des plaques (2) de ladite pluralité de plaques est inégale,
EP03017674A 2002-08-26 2003-08-14 Echangeur de chaleur à plaques Expired - Lifetime EP1394491B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITVR20020051 2002-08-26
IT000051U ITVR20020051U1 (it) 2002-08-26 2002-08-26 Scambiatore di calore a piastre.

Publications (3)

Publication Number Publication Date
EP1394491A2 EP1394491A2 (fr) 2004-03-03
EP1394491A3 EP1394491A3 (fr) 2005-08-17
EP1394491B1 true EP1394491B1 (fr) 2009-04-08

Family

ID=31198630

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03017674A Expired - Lifetime EP1394491B1 (fr) 2002-08-26 2003-08-14 Echangeur de chaleur à plaques

Country Status (6)

Country Link
US (1) US20040226704A1 (fr)
EP (1) EP1394491B1 (fr)
AT (1) ATE428097T1 (fr)
CA (1) CA2437780A1 (fr)
DE (1) DE60327026D1 (fr)
IT (1) ITVR20020051U1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7032654B2 (en) * 2003-08-19 2006-04-25 Flatplate, Inc. Plate heat exchanger with enhanced surface features
SE527716C2 (sv) * 2004-04-08 2006-05-23 Swep Int Ab Plattvärmeväxlare
DE102005034305A1 (de) * 2005-07-22 2007-01-25 Behr Gmbh & Co. Kg Plattenelement für einen Plattenkühler
US20070261834A1 (en) * 2006-05-09 2007-11-15 Kaori Heat Treatment Co., Ltd. Heat exchanger having uneven flowing paths
US9033026B2 (en) 2008-03-13 2015-05-19 Danfoss A/S Double plate heat exchanger
PT2591303E (pt) 2010-07-08 2015-11-16 Swep Int Ab Permutador de calor de placas
WO2015112771A2 (fr) * 2014-01-22 2015-07-30 Wolverine Tube, Inc. Micro-plaque à ailettes sur les deux faces pour un échangeur thermique à plaques
EP3097374B1 (fr) 2014-01-22 2018-01-10 Provides Metalmeccanica S.r.l. Échangeur thermique
USD763804S1 (en) * 2014-02-06 2016-08-16 Kobe Steel, Ltd. Plate for heat exchanger
USD757662S1 (en) * 2014-02-06 2016-05-31 Kobe Steel, Ltd. Plate for heat exchanger
JP6219199B2 (ja) * 2014-02-27 2017-10-25 株式会社神戸製鋼所 熱交換用プレートとなる元板材、及びその元板材の製造方法
PT3467423T (pt) * 2017-10-05 2020-09-01 Alfa Laval Corp Ab Placa de transferência de calor e um bloco de placas para um permutador de calor que compreende uma pluralidade das ditas placas de transferência de calor
SE541905C2 (en) * 2017-12-05 2020-01-02 Swep Int Ab Heat exchanger and method for forming heat exchanger plates
US11412640B2 (en) 2019-07-29 2022-08-09 Pratt & Whitney Canada Corp. Plate cooler for aircraft electronic components
US11414202B2 (en) 2019-11-06 2022-08-16 Pratt & Whitney Canada Corp. Plate cooler for aircraft electronic components

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1094291A2 (fr) * 1999-10-22 2001-04-25 Ebara Corporation Echangeur de chaleur à plaques

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US2872165A (en) * 1954-09-04 1959-02-03 Separator Ab Plate type heat exchanger
US3759308A (en) * 1970-06-15 1973-09-18 Parkson Corp Plate evaporator for removing volatiles from liquids
US4182411A (en) * 1975-12-19 1980-01-08 Hisaka Works Ltd. Plate type condenser
SE423750B (sv) * 1977-01-14 1982-05-24 Munters Ab Carl Anordning vid vermevexlare for sensibel och/eller latent vermeoverforing
US4749032A (en) * 1979-10-01 1988-06-07 Rockwell International Corporation Internally manifolded unibody plate for a plate/fin-type heat exchanger
US4438809A (en) * 1980-08-01 1984-03-27 Thaddeus Papis Tapered plate annular heat exchanger
FI85060C (fi) * 1985-11-11 1992-02-25 Mitsubishi Materials Corp Vaermeoeverfoeringsmaterial och foerfarande foer framstaellning av detsamma.
US4715433A (en) * 1986-06-09 1987-12-29 Air Products And Chemicals, Inc. Reboiler-condenser with doubly-enhanced plates
GB8631006D0 (en) * 1986-12-30 1987-02-04 Apv Int Ltd Plate heat transfer apparatus
US4995451A (en) * 1989-12-29 1991-02-26 Digital Equipment Corporation Evaporator having etched fiber nucleation sites and method of fabricating same
SE9200213D0 (sv) * 1992-01-27 1992-01-27 Alfa Laval Thermal Ab Svetsad plattvaermevaexlare
SE505225C2 (sv) * 1993-02-19 1997-07-21 Alfa Laval Thermal Ab Plattvärmeväxlare och platta härför
WO1995009338A1 (fr) * 1993-09-27 1995-04-06 Eberhard Paul Echangeur de chaleur a canaux
US6919162B1 (en) * 1998-08-28 2005-07-19 Agilent Technologies, Inc. Method for producing high-structure area texturing of a substrate, substrates prepared thereby and masks for use therein
EP1122505B1 (fr) * 1998-10-15 2004-12-29 Ebara Corporation Echangeur thermique a plaques
JP2000161877A (ja) * 1998-11-24 2000-06-16 Atago Seisakusho:Kk プレ―ト式熱交換器
JP3139681B2 (ja) * 1999-05-31 2001-03-05 春男 上原 凝縮器
DE19963594C2 (de) * 1999-12-23 2002-06-27 Mannesmann Ag Vorrichtung in Mikrostrukturtechnik zum Hindurchleiten von Medien sowie Verwendung als Brennstoffzellensystem
US6357516B1 (en) * 2000-02-02 2002-03-19 York International Corporation Plate heat exchanger assembly with enhanced heat transfer characteristics

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
EP1094291A2 (fr) * 1999-10-22 2001-04-25 Ebara Corporation Echangeur de chaleur à plaques

Also Published As

Publication number Publication date
DE60327026D1 (de) 2009-05-20
ITVR20020051U1 (it) 2004-02-27
US20040226704A1 (en) 2004-11-18
EP1394491A3 (fr) 2005-08-17
EP1394491A2 (fr) 2004-03-03
ATE428097T1 (de) 2009-04-15
CA2437780A1 (fr) 2004-02-26

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