EP1593925B1 - Plate heat exchanger - Google Patents

Plate heat exchanger Download PDF

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Publication number
EP1593925B1
EP1593925B1 EP05290951A EP05290951A EP1593925B1 EP 1593925 B1 EP1593925 B1 EP 1593925B1 EP 05290951 A EP05290951 A EP 05290951A EP 05290951 A EP05290951 A EP 05290951A EP 1593925 B1 EP1593925 B1 EP 1593925B1
Authority
EP
European Patent Office
Prior art keywords
circuit
inlet
bundle
wall
fluid
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 - Fee Related
Application number
EP05290951A
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German (de)
French (fr)
Other versions
EP1593925A1 (en
Inventor
Pierre Xavier Bussonnet
Sylvain Benezech
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 Packinox SAS
Original Assignee
Packinox SA
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Filing date
Publication date
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Publication of EP1593925A1 publication Critical patent/EP1593925A1/en
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Publication of EP1593925B1 publication Critical patent/EP1593925B1/en
Expired - Fee Related 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
    • F28D9/0006—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 plate-like or laminated conduits being enclosed within a pressure vessel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/005—Other auxiliary members within casings, e.g. internal filling means or sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates
    • F28F2009/222—Particular guide plates, baffles or deflectors, e.g. having particular orientation relative to an elongated casing or conduit
    • F28F2009/224—Longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction

Definitions

  • the present invention relates to a plate heat exchanger.
  • the plate heat exchangers are generally formed by an elongate sealed enclosure and a plate bundle disposed in said sealed enclosure and forming therewith a free space.
  • the plate bundle is composed of a stack of plates parallel to each other and forming between them a dual circulation circuit of two independent fluids and generally against the current.
  • This type of heat exchanger also comprises an inlet pipe of a hot fluid connected by a connection box also called collector, directly to the input of the first circuit of the plate bundle, which circulates in one of the circuits. this beam, and an outlet pipe of the cooled fluid after passing through said plate bundle and which is connected by a junction box directly to the output of this first circuit.
  • the heat exchangers of this kind also comprise an inlet pipe for a cold fluid circulating in the other of the plate bundle circuits and which is connected directly by a connection box to the inlet of the second circuit of this plate bundle and an outlet pipe of this heated fluid after passing through said bundle of plates.
  • This outlet pipe of the heated fluid is also connected directly by a junction box to the output of the second circuit of the plate bundle.
  • the heat exchange between the hot and cold fluids along the plate bundle subjects the wall of the enclosure to temperature variations along its length. Indeed, at the inlet of the hot fluid, the wall of the chamber is subjected to a high temperature, while the temperature gradually decreases along the wall as a function of the cooling of the hot fluid in the plate bundle.
  • the enclosure is generally formed of several ferrules placed end to end and assembled together in particular by welding. Given the variations in temperature, each shell has up to now a different thickness and determined according to the temperature to which it is subjected, see for example the document WO 94/21979 .
  • the object of the invention is to propose a plate heat exchanger which avoids these drawbacks and which makes it possible to have an enclosure of constant thickness over its entire length.
  • a plate heat exchanger generally designated by the reference 1 and which comprises, on the one hand, a sealed enclosure 2 of elongate shape and arranged for example vertically and, on the other hand, a bundle of plates 3 placed in said chamber 2 and forming with it, around said beam, a free space 4.
  • the plate bundle 3 of parallelepipedal general shape consists of a stack of plates, not shown, parallel to each other and between them a dual circuit A and B circulation of two independent fluids and for example against the current.
  • the heat exchanger 1 also comprises an inlet pipe 10 for a hot fluid directly connected by a connection box 11 also called a collector at the inlet A1 of the first circuit A of the plate bundle 3 and an outlet pipe 12 of the cooled fluid after its passage in the plate bundle 3 and which is connected directly by a junction box 13 to the output A2 of said first circuit A.
  • a connection box 11 also called a collector at the inlet A1 of the first circuit A of the plate bundle 3
  • an outlet pipe 12 of the cooled fluid after its passage in the plate bundle 3 and which is connected directly by a junction box 13 to the output A2 of said first circuit A.
  • the heat exchanger 1 also comprises an inlet pipe 20 for a cold fluid which communicates with the inlet B1 of the second circuit of the plate bundle via the free space 4 formed between the bundle of plates 3 and the enclosure 2.
  • the input B1 of the second circuit B is situated opposite the input A1 of the first circuit A of the plate bundle 3.
  • the heat exchanger 1 also comprises a tube 21 for outputting the heated fluid after passing through the second circuit B of the plate bundle 3 and which is connected to the output B2 of this second circuit B via a connection box 22.
  • the cold fluid flows from bottom to top of the plate bundle 3.
  • inlet pipes 10 of the hot fluid, inlet 20 of the cold fluid and outlet 21 of the heated fluid are disposed at the same end of the enclosure 2 and, in the embodiment shown in this figure, at the upper end of this enclosure 2.
  • the plate heat exchanger 1 comprises means 25 for channeling the cold fluid along the inner wall of the chamber 2 between the inlet pipe 20 of this cold fluid and the inlet B1 of the second circuit B of the beam. plates 3.
  • these means for channeling the cold fluid comprise an inner envelope 25 which comprises a first wall 26 disposed above the input A1 of the circuit A and the output B2 of the circuit B and a second wall 27 disposed in the free space 4 between the chamber 2 and the plate bundle 3 and forming with the inner wall of the chamber 2, an annular passage 5 for the cold fluid.
  • the first wall 26 is flat.
  • This wall 26 may have other shapes, such as a hemispherical or conical shape to promote the circulation of cold fluid in the annular passage 5.
  • the cold fluid circulates in the annular passage 5 along the inner wall of the chamber 2 and thus cools this enclosure 2.
  • the wall 27 of the inner casing 25 extends over a part of the length of the plate bundle 3 so as to direct the cold fluid circulating in the annular passage 5 to the inlet B1 of the second circuit B of the plate bundle 3, as represented by the arrows F on the Fig. 1 .
  • Maintaining the inner casing 25 is ensured for example by welding the wall 26 on the inlet pipe 10 and on the outlet pipe 21.

Description

La présente invention concerne un échangeur thermique à plaques.The present invention relates to a plate heat exchanger.

Les échangeurs thermiques à plaques sont généralement formés par une enceinte étanche de forme allongée et par un faisceau de plaques disposé dans ladite enceinte étanche et ménageant avec celle-ci un espace libre. Le faisceau de plaques est composé d'un empilement de plaques parallèles les unes aux autres et ménageant entre elles un double circuit de circulation de deux fluides indépendants et généralement à contre-courant.The plate heat exchangers are generally formed by an elongate sealed enclosure and a plate bundle disposed in said sealed enclosure and forming therewith a free space. The plate bundle is composed of a stack of plates parallel to each other and forming between them a dual circulation circuit of two independent fluids and generally against the current.

Ce type d'échangeurs thermiques comprend également une tubulure d'entrée d'un fluide chaud reliée par une boîte de raccordement également appelée collecteur, directement à l'entrée du premier circuit du faisceau de plaques, qui circule dans l'un des circuits de ce faisceau, et une tubulure de sortie du fluide refroidi après son passage dans ledit faisceau de plaques et qui est reliée par une boîte de raccordement directement à la sortie de ce premier circuit.This type of heat exchanger also comprises an inlet pipe of a hot fluid connected by a connection box also called collector, directly to the input of the first circuit of the plate bundle, which circulates in one of the circuits. this beam, and an outlet pipe of the cooled fluid after passing through said plate bundle and which is connected by a junction box directly to the output of this first circuit.

Pour refroidir ce fluide chaud, les échangeurs thermiques de ce genre comprennent également une tubulure d'entrée d'un fluide froid circulant dans l'autre des circuits du faisceau de plaques et qui est reliée directement par une boîte de raccordement à l'entrée du second circuit de ce faisceau de plaques et une tubulure de sortie de ce fluide réchauffé après son passage dans ledit faisceau de plaques. Cette tubulure de sortie du fluide réchauffé est aussi reliée directement par une boîte de raccordement à la sortie du second circuit du faisceau de plaques.In order to cool this hot fluid, the heat exchangers of this kind also comprise an inlet pipe for a cold fluid circulating in the other of the plate bundle circuits and which is connected directly by a connection box to the inlet of the second circuit of this plate bundle and an outlet pipe of this heated fluid after passing through said bundle of plates. This outlet pipe of the heated fluid is also connected directly by a junction box to the output of the second circuit of the plate bundle.

Ainsi, la circulation des deux fluides dans le faisceau de plaques provoque un échange thermique entre ces fluides.Thus, the circulation of the two fluids in the plate bundle causes a heat exchange between these fluids.

L'échange thermique entre les fluides chaud et froid le long du faisceau de plaques soumet la paroi de l'enceinte à des variations de températures sur sa longueur. En effet, au niveau de l'entrée du fluide chaud, la paroi de l'enceinte est soumise à une température élevée, alors que la température diminue progressivement le long de cette paroi en fonction du refroidissement du fluide chaud dans le faisceau de plaques.The heat exchange between the hot and cold fluids along the plate bundle subjects the wall of the enclosure to temperature variations along its length. Indeed, at the inlet of the hot fluid, the wall of the chamber is subjected to a high temperature, while the temperature gradually decreases along the wall as a function of the cooling of the hot fluid in the plate bundle.

L'enceinte est généralement formée de plusieurs viroles placées bout à bout et assemblées entre elles notamment par soudage. Compte tenu des variations de températures, chaque virole a jusqu'à présent une épaisseur différente et déterminée en fonction de la température à laquelle elle est soumise, voir par exemple le document WO 94/21979 .The enclosure is generally formed of several ferrules placed end to end and assembled together in particular by welding. Given the variations in temperature, each shell has up to now a different thickness and determined according to the temperature to which it is subjected, see for example the document WO 94/21979 .

Ces différences d'épaisseur obligent donc les constructeurs à prévoir différentes viroles pour un même échangeur ce qui augmente bien évidemment le coût et compliquent l'assemblage de ces viroles entre elles.These differences in thickness therefore require manufacturers to provide different ferrules for the same exchanger which obviously increases the cost and complicate the assembly of these ferrules together.

L'invention a pour but de proposer un échangeur thermique à plaques qui évite ces inconvénients et qui permet d'avoir une enceinte d'épaisseur constante sur toute sa longueur.The object of the invention is to propose a plate heat exchanger which avoids these drawbacks and which makes it possible to have an enclosure of constant thickness over its entire length.

L'invention a donc pour objet un échangeur thermique à plaques, du type comprenant :

  • une enceinte étanche de forme allongée,
  • un faisceau de plaques disposé dans ladite enceinte étanche et ménageant avec celle-ci un espace libre, ledit faisceau étant composé d'un empilement de plaques parallèles les unes aux autres et déterminant entre elles un double circuit de circulation à contre-courant de deux fluides indépendants,
  • une tubulure d'entrée d'un fluide chaud, reliée directement à l'entrée du premier circuit du faisceau,
  • une tubulure de sortie du fluide refroidi, reliée directement à la sortie dudit premier circuit,
  • une tubulure d'entrée d'un fluide froid communiquant avec l'entrée du second circuit du faisceau, opposée à l'entrée du premier circuit, et
  • une tubulure de sortie du fluide réchauffé, reliée directement avec la sortie dudit second circuit, opposée à la sortie du premier circuit,
caractérisé en ce qu'il comporte des moyens de canalisation du fluide froid le long de la paroi interne de l'enceinte entre la tubulure d'entrée de ce fluide froid et l'entrée du second circuit du faisceau, comprenant une enveloppe interne comportant une première paroi disposée au-dessus de l'entrée du premier circuit et de la sortie du second circuit et une seconde paroi disposée dans l'espace libre et ménageant avec la paroi interne de l'enceinte un passage annulaire pour ledit fluide froid.The subject of the invention is therefore a plate heat exchanger, of the type comprising:
  • an elongated waterproof enclosure,
  • a bundle of plates disposed in said sealed chamber and forming with it a free space, said bundle being composed of a stack of plates parallel to each other and defining between them a double countercurrent flow circuit of two fluids independent,
  • an inlet pipe of a hot fluid, connected directly to the input of the first beam circuit,
  • a cooled fluid outlet pipe connected directly to the outlet of said first circuit,
  • an inlet pipe of a cold fluid communicating with the inlet of the second beam circuit, opposite to the inlet of the first circuit, and
  • an outlet pipe for the heated fluid, connected directly with the outlet of said second circuit, opposite the outlet of the first circuit,
characterized in that it comprises means for channeling the cold fluid along the inner wall of the chamber between the inlet pipe of this cold fluid and the inlet of the second beam circuit, comprising an inner casing comprising a first wall disposed above the input of the first circuit and the output of the second circuit and a second wall disposed in the free space and forming with the inner wall of the enclosure an annular passage for said cold fluid.

Selon d'autres caractéristiques de l'invention:

  • la seconde paroi de l'enveloppe interne s'étend sur une partie de la longueur du faisceau de plaques,
  • la première paroi de l'enveloppe interne est plane ou hémisphérique ou conique, et
  • les tubulures respectivement d'entrée du fluide chaud, d'entrée du fluide froid et de sortie du fluide réchauffé sont disposées au niveau de la même extrémité de l'enceinte.
According to other features of the invention:
  • the second wall of the inner envelope extends over part of the length of the plate bundle,
  • the first wall of the inner envelope is flat or hemispherical or conical, and
  • the tubing respectively inlet of the hot fluid, inlet of the cold fluid and output of the heated fluid are disposed at the same end of the enclosure.

Les caractéristiques et avantages de l'invention apparaîtront au cours de la description qui va suivre, donnée à titre d'exemple et faite en référence aux dessins annexés, sur lesquels :

  • la Fig. 1 est une vue schématique en coupe longitudinale d'un échangeur thermique à plaques conforme à l'invention, et
  • la Fig. 2 est une vue en coupe selon la ligne 2-2 de la Fig. 1.
The features and advantages of the invention will become apparent from the following description, given by way of example and with reference to the appended drawings, in which:
  • the Fig. 1 is a schematic view in longitudinal section of a plate heat exchanger according to the invention, and
  • the Fig. 2 is a sectional view along line 2-2 of the Fig. 1 .

Sur la Fig. 1, on a représenté un échangeur thermique à plaques désigné dans son ensemble par la référence 1 et qui comprend, d'une part, une enceinte étanche 2 de forme allongée et disposée par exemple verticalement et, d'autre part, un faisceau de plaques 3 placé dans ladite enceinte 2 et ménageant avec celle-ci, autour dudit faisceau, un espace libre 4.On the Fig. 1 there is shown a plate heat exchanger generally designated by the reference 1 and which comprises, on the one hand, a sealed enclosure 2 of elongate shape and arranged for example vertically and, on the other hand, a bundle of plates 3 placed in said chamber 2 and forming with it, around said beam, a free space 4.

Le faisceau de plaques 3 de forme générale parallélépipédique est constitué d'un empilement de plaques, non représentées, parallèles les unes aux autres et ménageant entre elles un double circuit A et B de circulation de deux fluides indépendants et par exemple à contre-courant.The plate bundle 3 of parallelepipedal general shape consists of a stack of plates, not shown, parallel to each other and between them a dual circuit A and B circulation of two independent fluids and for example against the current.

L'échangeur thermique 1 comprend également une tubulure 10 d'entrée d'un fluide chaud reliée directement par une boîte de raccordement 11 également appelée collecteur à l'entrée A1 du premier circuit A du faisceau de plaques 3 et une tubulure 12 de sortie du fluide refroidi après son passage dans le faisceau de plaques 3 et qui est reliée directement par une boîte de raccordement 13 à la sortie A2 dudit premier circuit A. Ainsi, dans l'exemple de réalisation représenté sur les figures, le fluide chaud circule dans le faisceau de plaques 3 de haut en bas.The heat exchanger 1 also comprises an inlet pipe 10 for a hot fluid directly connected by a connection box 11 also called a collector at the inlet A1 of the first circuit A of the plate bundle 3 and an outlet pipe 12 of the cooled fluid after its passage in the plate bundle 3 and which is connected directly by a junction box 13 to the output A2 of said first circuit A. Thus, in the embodiment shown in the figures, the hot fluid flows in the plate bundle 3 from top to bottom.

L'échangeur thermique 1 comprend aussi une tubulure 20 d'entrée d'un fluide froid qui communique avec l'entrée B1 du second circuit du faisceau de plaques par l'intermédiaire de l'espace libre 4 ménagé entre le faisceau de plaques 3 et l'enceinte 2.The heat exchanger 1 also comprises an inlet pipe 20 for a cold fluid which communicates with the inlet B1 of the second circuit of the plate bundle via the free space 4 formed between the bundle of plates 3 and the enclosure 2.

L'entrée B1 du second circuit B est située à l'opposé de l'entrée A1 du premier circuit A du faisceau de plaques 3.The input B1 of the second circuit B is situated opposite the input A1 of the first circuit A of the plate bundle 3.

Enfin, l'échangeur thermique 1 comprend aussi une tubulure 21 de sortie du fluide réchauffé après son passage dans le second circuit B du faisceau de plaques 3 et qui est reliée à la sortie B2 de ce second circuit B par une boîte de raccordement 22. Le fluide froid circule donc de bas en haut du faisceau de plaques 3.Finally, the heat exchanger 1 also comprises a tube 21 for outputting the heated fluid after passing through the second circuit B of the plate bundle 3 and which is connected to the output B2 of this second circuit B via a connection box 22. The cold fluid flows from bottom to top of the plate bundle 3.

Ainsi que montré à la Fig. 1, les tubulures respectivement d'entrée 10 du fluide chaud, d'entrée 20 du fluide froid et de sortie 21 du fluide réchauffé sont disposées au niveau de la même extrémité de l'enceinte 2 et, dans l'exemple de réalisation représenté sur cette figure, à l'extrémité supérieure de cette enceinte 2.As shown in Fig. 1 , respectively the inlet pipes 10 of the hot fluid, inlet 20 of the cold fluid and outlet 21 of the heated fluid are disposed at the same end of the enclosure 2 and, in the embodiment shown in this figure, at the upper end of this enclosure 2.

L'échangeur thermique à plaques 1 comporte des moyens 25 de canalisation du fluide froid le long de la paroi interne de l'enceinte 2 entre la tubulure d'entrée 20 de ce fluide froid et l'entrée B1 du second circuit B du faisceau de plaques 3.The plate heat exchanger 1 comprises means 25 for channeling the cold fluid along the inner wall of the chamber 2 between the inlet pipe 20 of this cold fluid and the inlet B1 of the second circuit B of the beam. plates 3.

Ainsi que montré à la Fig. 1, ces moyens de canalisation du fluide froid comprennent une enveloppe interne 25 qui comprend une première paroi 26 disposée au-dessus de l'entrée A1 du circuit A et de la sortie B2 du circuit B et une seconde paroi 27 disposée dans l'espace libre 4 entre l'enceinte 2 et le faisceau de plaques 3 et ménageant avec la paroi interne de cette enceinte 2, un passage annulaire 5 pour le fluide froid.As shown in Fig. 1 these means for channeling the cold fluid comprise an inner envelope 25 which comprises a first wall 26 disposed above the input A1 of the circuit A and the output B2 of the circuit B and a second wall 27 disposed in the free space 4 between the chamber 2 and the plate bundle 3 and forming with the inner wall of the chamber 2, an annular passage 5 for the cold fluid.

Dans l'exemple de réalisation représenté à la Fig. 1, la première paroi 26 est plane. Cette paroi 26 peut avoir d'autres formes, comme par exemple une forme hémisphérique ou conique afin de favoriser la circulation du fluide froid dans le passage annulaire 5.In the embodiment shown in Fig. 1 the first wall 26 is flat. This wall 26 may have other shapes, such as a hemispherical or conical shape to promote the circulation of cold fluid in the annular passage 5.

Du fait du positionnement de l'enveloppe interne 25 entre la tubulure d'entrée 20 du fluide froid et l'entrée B1 du second circuit B du faisceau de plaques 3, le fluide froid circule dans le passage annulaire 5 le long de la paroi interne de l'enceinte 2 et refroidit donc cette enceinte 2. La paroi 27 de l'enveloppe interne 25 s'étend sur une partie de la longueur du faisceau de plaques 3 de façon à diriger le fluide froid circulant dans le passage annulaire 5 vers l'entrée B1 du second circuit B du faisceau de plaques 3, comme représenté par les flèches F sur la Fig. 1.Due to the positioning of the inner casing 25 between the inlet pipe 20 of the cold fluid and the inlet B1 of the second circuit B of the bundle of plates 3, the cold fluid circulates in the annular passage 5 along the inner wall of the chamber 2 and thus cools this enclosure 2. The wall 27 of the inner casing 25 extends over a part of the length of the plate bundle 3 so as to direct the cold fluid circulating in the annular passage 5 to the inlet B1 of the second circuit B of the plate bundle 3, as represented by the arrows F on the Fig. 1 .

Le maintien de l'enveloppe interne 25 est assuré par exemple par le soudage de la paroi 26 sur la tubulure d'entrée 10 et sur la tubulure de sortie 21.Maintaining the inner casing 25 is ensured for example by welding the wall 26 on the inlet pipe 10 and on the outlet pipe 21.

La circulation du fluide froid le long de la paroi interne de l'enceinte 2 permet de refroidir cette enceinte 2 ce qui présente l'avantage de pouvoir réaliser cette enceinte 2 avec des viroles, non représentées, placées bout à bout et présentant chacune la même épaisseur facilitant, de ce fait, l'assemblage de ces viroles entre elles et diminuant le coût de fabrication et de réalisation de cette enceinte.The circulation of the cold fluid along the inner wall of the chamber 2 makes it possible to cool this chamber 2 which has the advantage of being able to make this chamber 2 with ferrules, not shown, placed end to end and each having the same thickness facilitating, thereby, the assembly of these ferrules together and decreasing the cost of manufacture and production of this enclosure.

Claims (4)

  1. Plate heat exchanger, of the type comprising:
    - a sealed enclosure (2) of an elongated shape,
    - a bundle of plates (3) which is disposed in said sealed enclosure (2) and provides with the latter a free space (4), said bundle (3) being made up of a stack of plates which are parallel to each other and determine between themselves a double, counter-current circulation circuit for two independent fluids,
    - an inlet connection piece (10) for a hot fluid, connected directly to the inlet of the first circuit of the plate bundle (3),
    - an outlet connection piece (12) for the cooled fluid, connected directly to the outlet of said first circuit,
    - an inlet connection piece (20) for a cold fluid, in communication with the inlet of the second circuit of the bundle (3), opposite the inlet of the first circuit,
    - an outlet connection (21) for the heated fluid, connected directly to the outlet of the second circuit of the bundle (3), opposite the outlet of the first circuit of this plate bundle (3),
    characterised in that it comprises means (25) for channelling the cold fluid along the internal wall of the enclosure (2) between the inlet connection piece (20) for the cold fluid and the inlet of the second circuit of the plate bundle (3) comprising an internal envelope (26, 27), comprising a first wall (26) which is disposed above the inlet of the first circuit and the outlet of the second circuit and a second wall (27) which is disposed in the free space (4) and provides with the internal wall of the enclosure (2) an annular passage (5) for said cold fluid.
  2. Plate heat exchanger according to claim 1, characterised in that the second wall (27) of the internal envelope (26, 27) extends over a part of the length of the plate bundle (3).
  3. Plate heat exchanger according to claim 1 or 2, characterised in that the first wall (26) of the internal envelope (26, 27) is planar or hemispherical or conical.
  4. Plate heat exchanger according to any of the claims 1 to 3, characterised in that the respective connection pieces, inlet (10) for the hot fluid, inlet (20) for the cold fluid and outlet (21) for the heated fluid are disposed at the level of the same end of the enclosure (2).
EP05290951A 2004-05-06 2005-04-29 Plate heat exchanger Expired - Fee Related EP1593925B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0404908A FR2869979B1 (en) 2004-05-06 2004-05-06 PLATE HEAT EXCHANGER
FR0404908 2004-05-06

Publications (2)

Publication Number Publication Date
EP1593925A1 EP1593925A1 (en) 2005-11-09
EP1593925B1 true EP1593925B1 (en) 2008-12-03

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EP05290951A Expired - Fee Related EP1593925B1 (en) 2004-05-06 2005-04-29 Plate heat exchanger

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US (1) US20050247441A1 (en)
EP (1) EP1593925B1 (en)
JP (1) JP4549228B2 (en)
CN (1) CN1329706C (en)
DE (1) DE602005011356D1 (en)
FR (1) FR2869979B1 (en)

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Publication number Priority date Publication date Assignee Title
JP2008286437A (en) * 2007-05-15 2008-11-27 Toshiba Corp Heat exchanger

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997021065A1 (en) * 1995-12-04 1997-06-12 Edmeston Ab Heat exchanger adapted for the production of carbon black

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EP1593925A1 (en) 2005-11-09
JP2005321189A (en) 2005-11-17
CN1329706C (en) 2007-08-01
FR2869979B1 (en) 2006-08-04
US20050247441A1 (en) 2005-11-10
JP4549228B2 (en) 2010-09-22
DE602005011356D1 (en) 2009-01-15
CN1693831A (en) 2005-11-09
FR2869979A1 (en) 2005-11-11

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