EP1062471A1 - Echangeur thermique a plateaux dote d'un element de raccordement - Google Patents

Echangeur thermique a plateaux dote d'un element de raccordement

Info

Publication number
EP1062471A1
EP1062471A1 EP99908002A EP99908002A EP1062471A1 EP 1062471 A1 EP1062471 A1 EP 1062471A1 EP 99908002 A EP99908002 A EP 99908002A EP 99908002 A EP99908002 A EP 99908002A EP 1062471 A1 EP1062471 A1 EP 1062471A1
Authority
EP
European Patent Office
Prior art keywords
plate
heat transfer
heat exchanger
connection
connection block
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.)
Withdrawn
Application number
EP99908002A
Other languages
German (de)
English (en)
Inventor
Bo Patrick LAUREN NÄSLUND
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.)
Alfa Laval AB
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
Publication of EP1062471A1 publication Critical patent/EP1062471A1/fr
Withdrawn legal-status Critical Current

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
    • 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 concerns a plate heat exchanger comprising a plate package of permanently joined heat transfer plates, between which passages for at least two heat exchange fluids are formed. Each heat transfer plate is provided with port holes, which together with corresponding port holes in the other heat transfer plates form port channels through the plate package.
  • the plate heat exchanger further comprises at least one connection member adapted for connection with a conduit through which one of said heat exchange fluids is intended to flow to or from the plate heat exchanger.
  • the connection member by means of a permanent joint, is connected with an outer heat transfer plate in the plate package or with an end plate permanently joined therewith.
  • the connection member has a through hole and is herein provided with internal threads. The hole communicates with one of said port channels through the plate package.
  • the heat transfer plates in a plate heat exchanger of this kind are usually permanently joined with each other through welding or brazing.
  • the heat exchanger mostly is provided with two end plates, which are thicker than the heat transfer plates and are brazed together with the two respective outer heat transfer plates in the plate package.
  • one of the end plates is provided with holes opposite to the port channels through the plate package, but also the other end plate can be provided with one or more holes opposite to the port channels.
  • connection members usually in the form of pipe sockets, are fastened by brazing around the respective holes of these plates.
  • Each one of the end plates does not have to be made in one piece but can be made of two or more parts.
  • the passages for heat exchange fluids between the heat transfer plates are normally connected to the port channels in a way such that every second passage will be flowed through by one of the heat exchange fluids and, accordingly, is included in a first set of passages.
  • the remaining passages form a second set of passages, which will be flowed through by the other heat exchange fluid.
  • the first heat exchange fluid flows through a first pipe socket into a first port channel, further through the first set of passages to a second port channel and out through a second pipe socket.
  • the second heat exchange fluid flows through a third pipe socket into a third port channel, further through the second set of passages to a fourth port channel and out through a fourth pipe socket.
  • Plate heat exchangers of this kind are used in many areas.
  • One such area is cooling of hydraulic oil.
  • a plate heat exchanger normally is coupled to the low pressure side.
  • the conduits for hydraulic oil on the low pressure side of a hydraulic system have a comparatively large diameter for obtainment of pressure losses as small as possible.
  • special connecting devices are used for connecting the conduits to various components included in the hydraulic system. These connecting devices are often provided with external threads.
  • a plate heat exchanger is to form part of a hydraulic system, it must be possible to screw such connecting devices with external threads into the connection members of the plate heat exchanger.
  • the connection members of a plate heat exchanger must be provided with holes having internal threads.
  • the object of the present invention is to provide a solution to the problem now discussed, which is better than solutions suggested so far.
  • connection member is in the form of a connection block and has at least one further through hole and that the connection block is connected with the said outer heat transfer plate or the said end plate such that the further through hole communicates with a second one of said port channels through the plate package, the said permanent joint extending at least around both of the through holes, thereby forming a connection between the connection block and the outer heat transfer plate or end plate, which is resistant to torsional stress.
  • a connection block of this kind has a considerably larger surface in contact with the outer heat transfer plate or end plate than a pipe socket and, thus, the joint in question can be formed so that it covers a considerably larger area than before. 4
  • the joint definitely can take up the torsional moment arising when a connecting device is screwed into the plate heat exchanger.
  • connection block it is possible to have holes with a larger diameter than was possible earlier, when the material thickness of two adjacent pipe sockets was a limiting factor for the hole diameter.
  • connection block is provided with internal threads in the said further through hole.
  • each of the heat transfer plates has a width which is less than its length and a thickness which is within the interval 0.05-1.5 mm, said connection block having an extension across essentially the hole width of the heat transfer plates but only across part of the length of the heat transfer plates, in addition to which the connection block has a thickness considerably larger than that of a heat transfer plate.
  • the connection block has to cover only a part of the outer heat transfer plate or end plate in the area for a pair of port channels. This means saving of material in comparison with an arrangement in which the connection block would cover all of the outer heat transfer plate or the end plate.
  • connection block may have two parallel sides intended to be used for holding of the connection block by means of a 5
  • connection block when a connecting device provided with external threads is to be screwed into a through hole in the connection block.
  • fig. 1 shows a previously known plate heat exchanger
  • fig. 2 shows a section along the line ll-ll of the plate heat exchanger in f ⁇ g.1 ,
  • fig. 3 shows a side view of a plate heat exchanger according to the invention
  • fig. 4 shows a front view of the plate heat exchanger in fig.3.
  • Fig. 1 shows a previously known plate heat exchanger 1 comprising a stack of heat transfer plates 2 brazed together to a plate package. End plates 3,4, which are thicker than the heat transfer plates 2, are fastened by brazing onto the outer heat transfer plates of the plate package. One of the end plates 4 is provided with four holes around which the respective pipe sockets 5, 6, 7, and 8 are fastened by brazing.
  • Fig. 2 shows a section along the line ll-ll of the plate heat exchanger in fig. 1.
  • Each heat transfer plate 2 is provided with four port holes, of which port holes 9 and 10 are shown in fig. 2.
  • the heat transfer plates 2 abut in pairs against each other around the port holes such that four port channels are formed through the plate heat exchanger 1.
  • Fig. 2 shows two port channels 11 and 12, respectively. 6
  • the heat transfer plates 2 are further provided with a press pattern of depressions and elevations 13. In this way passages 14 for heat exchange fluids are formed between the heat transfer plates 2.
  • each pipe socket 6, 7 has only a small surface 15 in contact with the end plate 4. At this surface 15 the pipe socket 6, 7 is connected with the end plate 4 by means of a brazing joint. If the pipe socket 6, 7 is provided with an internal thread and a connecting device having an external thread is to be screwed into the same, the said brazing joint must be able to take up a resulting torsional moment.
  • connection blocks 16, 17 are brazed together with the end plate 4 provided with holes.
  • Fig. 4 shows a plate heat exchanger 16 from the side of the end plate 4.
  • Each of the connection blocks 17, 18 is provided with two through holes 19, 20 and 21 , 22, respectively, opposite to the respective port channels through the plate package.
  • the connection blocks are provided with internal threads, so that connecting devices with external threads can be screwed into the holes.
  • the connection blocks 17, 18 have surfaces 23, 24, shown in fig. 3, in contact with the end plate 4, which are considerably larger than the surfaces 15 in a plate heat exchanger according to fig.1 and 2. Brazing joints covering the respective surfaces 23, 24 mean that the connection blocks 17, 18 can be subjected to the required torsional moment, when connecting devices are tightened, without the brazing joints being ruptured.
  • connection block 17, 18 has two parallel sides 25, 26 spaced from each other, such that they can constitute grip surfaces for a tool by 7
  • connection blocks 17, 18 can be firmly held, when connecting devices are screwed into the holes 19, 20, 21 , 22.
  • connection blocks are brazed onto an outer heat transfer plate in the plate package.
  • the connection blocks are formed such that they abut against the outer heat transfer plate around its port holes and, possibly, against some of the elevations 13 of the outer heat transfer plate.
  • the connection blocks and the outer heat transfer plate are brazed together in the areas where they abut against each other. It is important that no leakage occurs through the brazing joints between the connection blocks and the outer heat transfer plate.
  • the brazing of each connection block to the outer heat transfer plate around its ports results in a brazing joint, which extends over a relatively large area and which, accordingly, can take up the necessary torsional moment.
  • connection blocks may alternatively be arranged one on each of the end plates.
  • the heat transfer plates in a plate package are arranged such that at least one of the heat exchange fluids flows in several so called passes through the plate heat exchanger. Then, a need of more than two connection blocks in the plate heat exchanger may arise, e.g. two connection blocks on one of the end plates and one connection block on the other end plate. In such a case some of the connection blocks may be provided with only one through hole.

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)
  • Adhesive Tapes (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Fuel Cell (AREA)

Abstract

L'invention concerne un échangeur thermique à plateaux assemblés en permanence et dotés de trous. L'échangeur thermique à plateaux comprend au moins un élément de raccordement sous la forme d'un bloc raccord (17, 18) destiné à relier l'échangeur thermique à un conduit d'entrée ou de sortie. Le bloc raccord doté au moins de deux trous traversants, est relié à l'aide d'un raccord permanent à un plateau de transfert de chaleur externe du groupement de plateaux ou à un plateau terminal assemblé en permanence à ce groupement. Au moins un des trous du bloc raccord est doté de filetages internes. Le raccord permanent est formé de telle façon qu'il s'étend autour au moins de deux des trous traversants (19, 20, 21, 22) pour former une connexion entre le bloc raccord (17, 18) et le plateau de transfert de chaleur extérieur ou le plateau terminal, de façon résistante à la contrainte de torsion. Les dispositifs de connexion pourvus de filetages externes peuvent ainsi être vissés à l'échangeur thermique à plateaux sans rupture du raccord permanent.
EP99908002A 1998-03-10 1999-02-18 Echangeur thermique a plateaux dote d'un element de raccordement Withdrawn EP1062471A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE9800803 1998-03-10
SE9800803A SE518825C2 (sv) 1998-03-10 1998-03-10 Plattvärmeväxlare
PCT/SE1999/000225 WO1999046549A1 (fr) 1998-03-10 1999-02-18 Echangeur thermique a plateaux dote d'un element de raccordement

Publications (1)

Publication Number Publication Date
EP1062471A1 true EP1062471A1 (fr) 2000-12-27

Family

ID=20410509

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99908002A Withdrawn EP1062471A1 (fr) 1998-03-10 1999-02-18 Echangeur thermique a plateaux dote d'un element de raccordement

Country Status (8)

Country Link
EP (1) EP1062471A1 (fr)
CN (1) CN1243949C (fr)
AT (1) AT5792U1 (fr)
AU (1) AU2752599A (fr)
DE (1) DE29980179U1 (fr)
IT (1) IT246554Y1 (fr)
SE (1) SE518825C2 (fr)
WO (1) WO1999046549A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005034305A1 (de) * 2005-07-22 2007-01-25 Behr Gmbh & Co. Kg Plattenelement für einen Plattenkühler
SE537142C2 (sv) 2012-02-14 2015-02-17 Alfa Laval Corp Ab Plattvärmeväxlare med förbättrad hållfasthet i portområdet
FR3008783B1 (fr) * 2013-07-19 2018-02-23 Valeo Systemes Thermiques Echangeur de chaleur avec un bloc d'adaptation fixe sur une plaque d'extremite, et procede de fabrication associe.
CN103884215A (zh) * 2014-03-20 2014-06-25 江苏曙光压力容器有限公司 可拆卸平叠板式换热器
TWI529365B (zh) * 2015-01-19 2016-04-11 國立中央大學 熱交換模組

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE127970C1 (fr) * 1950-01-01
US884600A (en) * 1904-12-31 1908-04-14 Calor Sterilizer Co Temperature-exchanging apparatus.
US1874054A (en) * 1930-05-16 1932-08-30 Levinsen Claus Heat transmitter
US2858112A (en) * 1955-05-25 1958-10-28 Gen Motors Corp Heat exchanger
US3240268A (en) * 1962-01-02 1966-03-15 Gen Motors Corp Stacked caseless heat exchangers
GB1063098A (en) * 1964-06-03 1967-03-30 Herbert Fernyhough Maddocks Improvements in heat exchangers
US3805889A (en) * 1973-05-04 1974-04-23 United Aircraft Prod Plate type heat exchanger
IT1159723B (it) * 1978-06-14 1987-03-04 Ipra Spa Ora Ind Piemontese Ra Scambiatore di calore a piastre
US4538679A (en) * 1984-11-19 1985-09-03 John T. Hoskins Fluid coupling assembly
JPS6113178U (ja) * 1984-06-28 1986-01-25 株式会社 土屋製作所 ハウジングレス熱交換器
SE462059B (sv) * 1986-12-19 1990-04-30 Blackstone Sweden Vaermevaexlare med platta roer, vilka roer bildas av tvaa halvor med oeverlappande flaensar
CA1313182C (fr) * 1989-02-24 1993-01-26 Allan K. So Echangeur de chaleur pour reservoir d'huile
DE4308858C2 (de) * 1993-03-19 2003-04-30 Behr Gmbh & Co Scheibenwärmetauscher
US5562157A (en) * 1994-09-30 1996-10-08 Nippondenso Co., Ltd. Heat exchanger
JP3677638B2 (ja) * 1995-12-27 2005-08-03 昭和電工株式会社 積層型熱交換器およびその製造方法
DE19628561C1 (de) * 1996-07-16 1997-09-04 Laengerer & Reich Gmbh & Co Plattenwärmetauscher

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9946549A1 *

Also Published As

Publication number Publication date
DE29980179U1 (de) 2000-12-21
CN1292862A (zh) 2001-04-25
AT5792U1 (de) 2002-11-25
IT246554Y1 (it) 2002-04-09
SE518825C2 (sv) 2002-11-26
SE9800803L (sv) 1999-09-11
ITMI990116V0 (it) 1999-03-02
CN1243949C (zh) 2006-03-01
AU2752599A (en) 1999-09-27
SE9800803D0 (sv) 1998-03-10
ITMI990116U1 (it) 2000-09-02
WO1999046549A1 (fr) 1999-09-16

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