WO1999036740A1 - Echangeur thermique a plaques - Google Patents

Echangeur thermique a plaques Download PDF

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Publication number
WO1999036740A1
WO1999036740A1 PCT/SE1999/000048 SE9900048W WO9936740A1 WO 1999036740 A1 WO1999036740 A1 WO 1999036740A1 SE 9900048 W SE9900048 W SE 9900048W WO 9936740 A1 WO9936740 A1 WO 9936740A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
heat exchanging
plates
mentioned
heat exchanger
Prior art date
Application number
PCT/SE1999/000048
Other languages
English (en)
Inventor
Lennart EDSÖ
Ingvar Lindholm
Original Assignee
Alfa Laval 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
Application filed by Alfa Laval Ab filed Critical Alfa Laval Ab
Priority to KR1020007007803A priority Critical patent/KR100560031B1/ko
Priority to EP99902951A priority patent/EP1047912B1/fr
Priority to DE69906931T priority patent/DE69906931T2/de
Priority to AU23043/99A priority patent/AU2304399A/en
Publication of WO1999036740A1 publication Critical patent/WO1999036740A1/fr

Links

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
    • 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 refers to a plate heat exchanger for at least two heat exchanging fluids which heat exchanger is permanently joined and comprises at least one core of plates with a plurality of inner heat exchanging plates, at least two outer heat exchanging plates and at least two end plates, the heat exchanging plates creating plate interspaces between each other and each one of the outer heat exchanging plates being situated between the inner heat exchanging plates on one hand and one of the end plates on the other.
  • WO 88/09473 shows a permanently joined plate heat exchanger. Every heat exchanging plate in the core of plates shows four port sections. To make a smooth assembly of the core of plates possible two of these four port sections are mainly in one plane and two are mainly in another one. Thus a problem must arise in the ends of the core of plates when it comes to connecting this with planar end plates. A distance is created between an outer heat exchanging plate and an end plate around two of the port sections. The distance is overbridged with the aid of a spacer ring 20 situated in the joining area 12a and 12b respectively of the heat exchanging plate 2. The spacer ring 20 also serves as a sealing between the heat exchanging plate 2 and the end plate 4a. Such a solution for the sealing problem is expensive. Summary of the invention
  • the purpose of the invention is to create a less expensive plate heat exchanger with in other respects comparable performance in comparison with the described construction.
  • the invention comprises a plate heat exchanger for at least two heat exchanging fluids which heat exchanger is permanently joined and contains at least one core of plates with a plurality of inner heat exchanging plates, at least two outer heat exchanging plates and at least two end plates.
  • the heat exchanging plates create plate interspaces between each other and each one of the outer heat exchanging plates is situated between the inner heat exchanging plates on one hand and one of the end plates on the other hand.
  • Each one of the heat exchanging plates is equipped with one or several corrugations vertically extending within an area bounded by two at a distance from each other situated parallel first and second planes respectively, both mainly in parallel with all the heat exchanging plates as well as the end plates of the plate heat exchanger.
  • the first plane is closer to a first end plate in one end of the heat exchanger than the second plane is, and the second plane is closer to a second end plate in the second end of the plate heat exchanger than the first plane is.
  • Each one of the heat exchanging plates is further equipped with at least four port holes being parts of an inlet channel and an outlet channel through the core of plates for each one of the fluids.
  • Each port hole is surrounded by a first sealing area situated close to the periphery of the port hole, each heat exchanging plate showing at least four such first sealing areas.
  • At least one of the end plates has a plurality of port holes each one communicating with one of the inlet channels or one of the outlet channels, and the inlet channels and the outlet channels for a first and a second fluid respectively are in fluid communication with a first and a second set of plate interspaces respectively.
  • At least all except one of the mentioned first sealing areas on a first outer heat exchanging plate are situated in the mentioned first plane and bear on and seal against the mentioned first end plate extending in this plane.
  • Figure 1 shows, in a cross-section through two port channels, a part of a plate heat exchanger according to the prior art.
  • Figure 2 shows, in a cross-section through two port channels, a part of a plate heat exchanger according to the invention.
  • Figure 3 shows, in a front view, a part of an outer heat exchanging plate being a part of the plate heat exchanger according to figure 2.
  • Figure 4 shows, in a cross-section through two port channels, a plate heat exchanger according to an alternate mode of execution of the invention. Description of modes of execution
  • the heat exchanger comprising a planar end plate 1 , an outer heat exchanging plate 2a and two inner heat exchanging plates 2b and 2c where the plates 2a and 2c are identical and thus of one type and the plate 2b of another one.
  • both more heat exchanging plates and one further end plate are used.
  • From the figure are furthermore two channels 3, 4 for two heat exchanging fluids evident, whereby it is considered understood that further two channels are needed for these fluids.
  • Each one of the heat exchanging plates is pressed such that the areas closest around the port holes respectively are in different planes.
  • the area closest around the port hole being a part of the channel 3 is in a lower plane and the area closest around the port hole being a part of the channel 4 is in an upper plane.
  • a sealing washer/spacer ring 5 is used to overbridge the distance between the outer heat exchanging plate and the end plate within the channel 3.
  • the heat exchanger comprising a planar end plate 11 , an outer heat exchanging plate 12a (see also figure 3) and two inner heat exchanging plates 12b and 12c where all the plates may be of different types. Usually also here more heat exchanging plates and a further end plate are used. Two channels 13, 14 for two heat exchanging fluids are present in the figure, but further two channels through the core of plates are needed for these fluids.
  • the outer heat exchanging plate 12a shows differences in comparison with the inner heat exchanging plate 12c. For at least three of and preferably all of the port holes around and nearby the port holes situated areas for bearing and sealing between the outer heat exchanging plate 12a and the end plate 11 are in the same plane.
  • the plates are plainly formed with two concentric sealing areas in different planes around at least one and preferably every critical port hole, i.e. such port holes where the preferences regarding the plane of the sealing area vary with the use of the plate.
  • the port holes are then punched or cut up in the plates in an subsequent operation. (In fact it is possible to think of the order of the operative steps being the reversed, i.e. punching or cutting precedes the pressing of the plate.)
  • the position for the plane of the sealing areas is also varied. If one for instance cuts a hole with the diameter C in figure 2, one gets a port hole for the channel 13 in a lower plane and the plate becomes suitable for use in the position 12c (or in the position 12a together with a sealing washer or equivalent). However, if one cuts a smaller hole - of the diameter A - one gets a port hole for the channel 13 in an upper plane, which plane thus directly connects to the end plate 11 without the need for using any sealing washer or equivalent and the plate becomes directly suitable for use in the position 12a.
  • a heat exchanging plate of the type 12c or 22c with existing port holes may afterwards be converted to a heat exchanging plate of the type 12a or 22a (not demanding any sealing washer or equivalent).
  • a heat exchanging plate of the type 22b with existing port holes may afterwards be converted to a heat exchanging plate of the type 22d.
  • the conversion is created by simply edge-raising the port hole for the channel 13, 23 to the same height as the port hole for the channel 14, 24 so that the sealing areas consequently will be situated in the same plane.
  • the edge-raising may be done in any known proper way, for example in a transfer tool or the like.
  • the port holes in an outer heat exchanging plate may be of different sizes. The most common situation is probably using two heat exchanging fluids and four channels through the core of plates, whereby the port holes in an outer heat exchanging plate may be pairwise of the same size. In this case two of the port holes in every outer heat exchanging plate may still, after the joining together of the plate heat exchanger, each one be surrounded by two concentric sealing areas where consequently one of them is circumferentially situated outside the other one.
  • Each one of all the heat exchanging plates may be executed with a flange-like edge section around the whole circumference of the plate, which edge section makes an angle with the main plane of extension of the plate and which bears on the corresponding edge sections on adjacent plates in the core of plates.
  • On each other bearing surfaces in the core of plates, e.g. areas of the newly mentioned flange-like edge sections, may be fluid tightly joined for example by brazing.
  • the plates are often created of a thin steel plate, but also other materials may be used such as for example titanium.

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 thermique à plaques pour au moins deux fluides d'échange thermique. Ledit échangeur thermique est étanchéifié en permanence et comporte au moins un noyau de plaques, constitué de plusieurs plaques d'échange thermique intérieures (12b, 12c, 22b, 22c), d'au moins deux plaques d'échange thermique extérieures (12a, 22a, 22d) et d'au moins deux plaques d'extrémité (11, 21, 22). Chaque plaque d'échange thermique (12a, 12b, 12c, 22a, 22b, 22c, 22d) est dotée d'une ou plusieurs ondulations s'étendant verticalement dans une zone délimitée par des premier et second plans parallèles et espacés l'un de l'autre. Le premier plan est plus près d'une première plaque d'extrémité (11, 21) dans une extrémité de l'échangeur thermique que ne l'est le second plan. Chaque plaque d'échange thermique est de plus équipée d'au moins quatre orifices entourés chacun d'une première zone d'étanchéité, et présente ainsi au moins quatre zones d'étanchéité. Au moins toutes les premières zones d'étanchéité sauf une, d'une première plaque d'échange thermique extérieure (12a, 22a) se trouvent dans le premier plan et reposent de manière étanche contre la première plaque d'extrémité (11, 21) s'étendant dans ce plan.
PCT/SE1999/000048 1998-01-15 1999-01-15 Echangeur thermique a plaques WO1999036740A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1020007007803A KR100560031B1 (ko) 1998-01-15 1999-01-15 판형 열교환기
EP99902951A EP1047912B1 (fr) 1998-01-15 1999-01-15 Echangeur thermique a plaques
DE69906931T DE69906931T2 (de) 1998-01-15 1999-01-15 Plattenwärmetauscher
AU23043/99A AU2304399A (en) 1998-01-15 1999-01-15 Plate heat exchanger

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9800099A SE511270C2 (sv) 1998-01-15 1998-01-15 Plattvärmeväxlare då portpartiets plan i en yttre värmeväxlingsplatta möjliggör anliggning med ändplattan
SE9800099-5 1998-01-15

Publications (1)

Publication Number Publication Date
WO1999036740A1 true WO1999036740A1 (fr) 1999-07-22

Family

ID=20409878

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1999/000048 WO1999036740A1 (fr) 1998-01-15 1999-01-15 Echangeur thermique a plaques

Country Status (7)

Country Link
EP (1) EP1047912B1 (fr)
KR (1) KR100560031B1 (fr)
CN (1) CN1262811C (fr)
AU (1) AU2304399A (fr)
DE (1) DE69906931T2 (fr)
SE (1) SE511270C2 (fr)
WO (1) WO1999036740A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005098334A1 (fr) * 2004-04-08 2005-10-20 Swep International Ab Echangeur thermique a plateaux
DE102005034305A1 (de) * 2005-07-22 2007-01-25 Behr Gmbh & Co. Kg Plattenelement für einen Plattenkühler
WO2010069874A1 (fr) * 2008-12-17 2010-06-24 Swep International Ab Echangeur de chaleur renforcé
WO2011076823A3 (fr) * 2009-12-22 2011-10-13 Robert Bosch Gmbh Echangeur de chaleur à plaques doté d'emplacements de jonction améliorés et procédé de fabrication associé

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003242090A1 (en) * 2003-06-05 2005-01-04 Matsushita Ecology Systems Co., Ltd. Heat exchanger

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552335A1 (de) * 1975-11-21 1977-06-08 Impulsa Veb K Waermeuebertragungsplatten
GB2084712A (en) * 1980-09-29 1982-04-15 Apv The Co Ltd Improvements in/or relating to plate heat exchangers
WO1986005867A1 (fr) * 1985-04-01 1986-10-09 Torell Ab Echangeur thermique a plaques
WO1988009473A1 (fr) * 1987-05-29 1988-12-01 Alfa-Laval Thermal Ab Echangeur de chaleur a plaques jointes en permanence
WO1995035474A1 (fr) * 1994-06-20 1995-12-28 Flatplate, Inc. Echangeur de chaleur a plaques superposees presentant trois circuits
EP0702201A1 (fr) * 1994-09-14 1996-03-20 General Motors Corporation Noyau d'échangeur de chaleur avec conduit d'alimentation débouchant à l'intérieur
WO1997015797A1 (fr) * 1995-10-24 1997-05-01 Alfa Laval Ab Echangeur de chaleur a plaques

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2552335A1 (de) * 1975-11-21 1977-06-08 Impulsa Veb K Waermeuebertragungsplatten
GB2084712A (en) * 1980-09-29 1982-04-15 Apv The Co Ltd Improvements in/or relating to plate heat exchangers
WO1986005867A1 (fr) * 1985-04-01 1986-10-09 Torell Ab Echangeur thermique a plaques
WO1988009473A1 (fr) * 1987-05-29 1988-12-01 Alfa-Laval Thermal Ab Echangeur de chaleur a plaques jointes en permanence
WO1995035474A1 (fr) * 1994-06-20 1995-12-28 Flatplate, Inc. Echangeur de chaleur a plaques superposees presentant trois circuits
EP0702201A1 (fr) * 1994-09-14 1996-03-20 General Motors Corporation Noyau d'échangeur de chaleur avec conduit d'alimentation débouchant à l'intérieur
WO1997015797A1 (fr) * 1995-10-24 1997-05-01 Alfa Laval Ab Echangeur de chaleur a plaques

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005098334A1 (fr) * 2004-04-08 2005-10-20 Swep International Ab Echangeur thermique a plateaux
JP2007532852A (ja) * 2004-04-08 2007-11-15 スウェップ インターナショナル アクティエボラーグ プレート熱交換器
US9091494B2 (en) 2004-04-08 2015-07-28 Swep International Ab Plate heat exchanger
DE102005034305A1 (de) * 2005-07-22 2007-01-25 Behr Gmbh & Co. Kg Plattenelement für einen Plattenkühler
WO2010069874A1 (fr) * 2008-12-17 2010-06-24 Swep International Ab Echangeur de chaleur renforcé
US9341415B2 (en) 2008-12-17 2016-05-17 Swep International Ab Reinforced heat exchanger
WO2011076823A3 (fr) * 2009-12-22 2011-10-13 Robert Bosch Gmbh Echangeur de chaleur à plaques doté d'emplacements de jonction améliorés et procédé de fabrication associé

Also Published As

Publication number Publication date
EP1047912A1 (fr) 2000-11-02
KR20010052143A (ko) 2001-06-25
SE9800099L (sv) 1999-07-16
DE69906931D1 (de) 2003-05-22
EP1047912B1 (fr) 2003-04-16
DE69906931T2 (de) 2003-11-06
AU2304399A (en) 1999-08-02
CN1288512A (zh) 2001-03-21
SE511270C2 (sv) 1999-09-06
CN1262811C (zh) 2006-07-05
SE9800099D0 (sv) 1998-01-15
KR100560031B1 (ko) 2006-03-15

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