EP2865960A1 - Heat exchange device - Google Patents

Heat exchange device Download PDF

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Publication number
EP2865960A1
EP2865960A1 EP20130190168 EP13190168A EP2865960A1 EP 2865960 A1 EP2865960 A1 EP 2865960A1 EP 20130190168 EP20130190168 EP 20130190168 EP 13190168 A EP13190168 A EP 13190168A EP 2865960 A1 EP2865960 A1 EP 2865960A1
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EP
European Patent Office
Prior art keywords
heat exchange
exchange device
plates
sheets
pipe
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.)
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Application number
EP20130190168
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German (de)
French (fr)
Inventor
John Lucciarini
Jens-Petter Sletta
Alexandre David
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JTC Energie Sarl
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JTC Energie Sarl
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Publication date
Application filed by JTC Energie Sarl filed Critical JTC Energie Sarl
Priority to EP20130190168 priority Critical patent/EP2865960A1/en
Publication of EP2865960A1 publication Critical patent/EP2865960A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30—Arrangement or mounting of heat-exchangers
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/03—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits
    • F28D1/0308—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding

Definitions

  • the present invention relates to a heat exchange device, and in particular an air-fluid heat exchanger, adapted to be installed inside a ventilation duct or exhaust air.
  • the present invention also relates to a method of installing a heat exchange device inside a ventilation duct or exhaust air, and the system thus obtained.
  • the known state of the art includes several heat exchange devices which are used in a large number of industrial applications.
  • the building industry is offering more and more technical solutions to improve the thermal insulation of homes.
  • These achievements often use heat exchangers, or thermal energy storage systems, to limit the energy loss tower by ensuring an air exchange sufficient to ensure hygiene and comfort.
  • heat exchange devices are used to extract the heat contained in a flow of air that it is desired to evacuate to the outside. This is the case for example systems for recovering the residual heat of the combustion gases emitted by a chimney or boiler, or the emissions of heated air from a kitchen, or so on.
  • Thermal exchange devices are also used when it is desired to heat a stream of air, supplying heat thereto. This is the case, for example, heating or drying installations.
  • air-fluid exchange systems that operate by either heating the air in a pipe or cooling it as needed.
  • autonomous energy exchange devices comprising a chamber connected to the air evacuation duct and, inside the duct, a circuit made with tubular duct plates, at the same time. inside which a fluid is circulated in order to cool or reheat the air
  • the document FR2069950 discloses a heat exchanger device comprising a plurality of stamped plates inside a plenum in which a forced circulation of air is established. Similar solutions are also known for example from the documents FR2482266 and GB2095394 . Other, more complex systems also include liquid-vapor phase transformations of the heat-exchange fluid, also allow latent heat exchange.
  • An object of the present invention is to provide a heat exchange device and a method for installing such a device free from the limitations of known devices and methods.
  • Another object of the invention is to provide a compact heat exchange device which can be integrated into existing air circulation lines, as well as the corresponding installation method.
  • a heat exchange device for installation inside a pre-existing air circulation duct comprising: a plurality of copper foils assembled so as to give rise to a plurality of hollow plates each having two copper sheets, the edges of the sheets of each plate being welded so as to leave a gap between the sheets, the plates being interconnected by pipes, so as to achieve a coolant circuit coolant inside the plates.
  • the invention relates to a heat exchanger suitable for installation in a pipe 30 in which air is circulated.
  • the pipe 30 could be a vent pipe, or also a flue gas discharge pipe, or a suction pipe connected to a kitchen hood, or any other pipe, the invention being applicable to any which circulation system in which one wishes to exchange air or gas.
  • the pipe is, in a typical case, a tubular pipe made of sheet steel, or a synthetic polymer, with or without a layer (not shown) of thermal insulation.
  • the exchange device of the invention consists of a stack of hollow plates, each made by juxtaposition of two copper sheets 18a and 18b having a concave face and a convex face.
  • the copper foils 18a and 18b are easily made by stamping and / or stamping, from a copper sheet of suitable thickness, but they can be implemented by any suitable technique.
  • the sheets 18a and 18b are assembled in pairs, the concave faces juxtaposed, and their edges 16 are welded together, so as to leave a gap between them in which can circulate water, or a heat transfer fluid.
  • the pipes 23 connect the plates together, and put the hollow spaces in fluid communication, through openings made beforehand in the sheets 18a and 18b so as to provide a coolant circuit coolant inside the plates.
  • the figure 2 illustrates an example of heat exchange device in section, in which the circuit is visible.
  • the pipes 15 and 25 connect the heat exchange device of the invention to an external circuit, not shown, which may include circulation pumps, a heat storage system, radiators, evaporators, burners, heat pumps, or any other device for transferring heat to and from the heat transfer fluid and, via the device of the invention, to the air or gas flowing in the pipe 35.
  • the pipes 23 and the pipes 15 25 are made of copper and are soldered to the sheets 18a, 18b.
  • the hollow plates are all hydraulically connected in parallel, in the sense that the heat transfer fluid is distributed and passes through the plates at the same time.
  • the hollow plates are parallel to each other, so as to create rectilinear right channels of air circulation.
  • the inventors have found that this arrangement makes it possible to achieve optimal heat exchange while minimizing dynamic losses of air circulation. For this reason, the system of the invention does not require a consequent installation to pulsate the air inside the pipe 35 and lends itself well to systems in which the speed of the air is low, or systems based on natural circulation.
  • Another advantage of the device of the invention is that the dimensions and the number of plates is easily adaptable, and the resulting device is particularly compact.
  • The can be used as 'retrofit' in existing installations, preserving and reusing existing pipes.
  • the device can be inserted through a temporary opening made in a wall of a pipe.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Un dispositif d'échange thermique comprenant un assemblage de feuilles de cuivre embouties et soudées aux bords, de façon à obtenir un empilement de plaques creuses dans lesquelles circule de l'eau ou un fluide caloporteur. Les plaques sont reliées entre-elles par des tuyaux soudés créant ainsi un circuit de fluide caloporteur. Le dispositif est particulièrement simple et économique à fabriquer, et ses dimensions, ainsi que sa puissance calorifique, peuvent être adaptées facilement simplement en modulant les dimensions et le nombre de plaques. Une application spécifique de l'invention est l'installation de ces dispositifs d'échange thermique à l'intérieur de conduites préexistantes, par une ouverture provisoire dans une paroi latérale.A heat exchange device comprising an assembly of copper foils stamped and welded to the edges, so as to obtain a stack of hollow plates in which water circulates or a coolant. The plates are connected to each other by welded pipes thus creating a coolant circuit. The device is particularly simple and economical to manufacture, and its dimensions, as well as its heat output, can be easily adapted simply by modulating the dimensions and the number of plates. A specific application of the invention is the installation of these heat exchange devices inside pre-existing pipes, by a temporary opening in a side wall.

Description

Domaine techniqueTechnical area

La présente invention concerne un dispositif d'échange thermique, et notamment un échangeur de chaleur air-fluide, apte à être installé à l'intérieur d'une conduite de ventilation ou d'évacuation d'air.The present invention relates to a heat exchange device, and in particular an air-fluid heat exchanger, adapted to be installed inside a ventilation duct or exhaust air.

La présente invention concerne aussi un procédé d'installation d'un dispositif d'échange thermique à l'intérieur d'une conduite de ventilation ou d'évacuation d'air, ainsi que le système ainsi obtenu.The present invention also relates to a method of installing a heat exchange device inside a ventilation duct or exhaust air, and the system thus obtained.

Etat de la techniqueState of the art

L'état de la technique connue comprend plusieurs dispositifs d'échange thermique lesquels sont utilisés en un grand nombre d'applications industrielles. L'industrie du bâtiment propose de plus en plus de solutions techniques visant à améliorer l'isolation thermique des habitations. Ces réalisations ont souvent recours à des échangeurs de chaleur, ou à des systèmes de stockage d'énergie thermique, afin de limiter la déperdition énergétique tour en assurant un échange d'air suffisant pour assurer l'hygiène et le confort.The known state of the art includes several heat exchange devices which are used in a large number of industrial applications. The building industry is offering more and more technical solutions to improve the thermal insulation of homes. These achievements often use heat exchangers, or thermal energy storage systems, to limit the energy loss tower by ensuring an air exchange sufficient to ensure hygiene and comfort.

En d'autres cas, on utilise des dispositifs d'échange thermique pour extraire la chaleur contenue dans un flux d'air que l'on souhaite évacuer à l'extérieur. Tel est le cas par exemple des systèmes permettant de récupérer la chaleur résiduelle des gaz de combustion émis par une cheminée ou une chaudière, ou les émissions d'air chauffée provenant d'une cuisine, ou ainsi de suite.In other cases, heat exchange devices are used to extract the heat contained in a flow of air that it is desired to evacuate to the outside. This is the case for example systems for recovering the residual heat of the combustion gases emitted by a chimney or boiler, or the emissions of heated air from a kitchen, or so on.

On utilise aussi des dispositifs d'échange thermique lorsqu'on souhaite réchauffer un flux d'air, y apportant de la chaleur. Tel est le cas, par exemple des installations de chauffage ou séchage. On connaît aussi des systèmes d'échange air-fluide qui fonctionnent soit en chauffant l'air dans une conduite, soit en la refroidissant, selon les besoins.Thermal exchange devices are also used when it is desired to heat a stream of air, supplying heat thereto. This is the case, for example, heating or drying installations. We also know air-fluid exchange systems that operate by either heating the air in a pipe or cooling it as needed.

En ces cas on utilise souvent des dispositifs d'échange énergétique autonomes comprenant une chambre raccordée à la conduite d'évacuation de l'air et, à l'intérieur de celle-ci, un circuit réalisé avec des plaques odes conduites tubulaires, à l'intérieur duquel on fait circuler un fluide afin de refroidir ou réchauffer l'airIn these cases, it is often possible to use autonomous energy exchange devices comprising a chamber connected to the air evacuation duct and, inside the duct, a circuit made with tubular duct plates, at the same time. inside which a fluid is circulated in order to cool or reheat the air

Le document FR2069950 , par exemple, divulgue un dispositif échangeur de chaleur comprenant une pluralité de plaques étampées à l'intérieur d'un plénum dans lequel on établi une circulation forcée d'air. Des solutions similaires sont connues également par exemple par les documents FR2482266 et GB2095394 . D'autres systèmes, plus complexes, comportent aussi des transformations de phase liquide-vapeur du fluide calorifère, permettent aussi un échange de chaleur latente.The document FR2069950 , for example, discloses a heat exchanger device comprising a plurality of stamped plates inside a plenum in which a forced circulation of air is established. Similar solutions are also known for example from the documents FR2482266 and GB2095394 . Other, more complex systems also include liquid-vapor phase transformations of the heat-exchange fluid, also allow latent heat exchange.

les dispositifs divulgués par les documents ci-dessus sont toutefois relativement volumineux, ce qui rend leur emploi problématique dans des situations où l'espace à disposition est limité, ou lorsqu'ils doivent être insérés en des installations existantes.the devices disclosed by the above documents, however, are relatively bulky, which makes their use problematic in situations where the space available is limited, or when they must be inserted into existing installations.

Par ailleurs, la circulation de l'air à l'intérieur de ces dispositifs se fait selon un parcours relativement tortueux, ce qui occasionne des résistances au flux relativement importantes. Ce fait limite l'application des dispositifs d'échange thermique connu aux systèmes à circulation pulsée disposant d'une puissance de circulation suffisante.Moreover, the circulation of the air inside these devices is in a relatively tortuous path, which causes relatively large resistance to flow. This fact limits the application of known heat exchange devices to pulsed circulation systems with sufficient circulating power.

Bref résumé de l'inventionBrief summary of the invention

Un but de la présente invention est de proposer un dispositif d'échange thermique et un procédé d'installation d'un tel dispositif exempts des limitations des dispositifs et procédés connus.An object of the present invention is to provide a heat exchange device and a method for installing such a device free from the limitations of known devices and methods.

Un autre but de l'invention est de proposer un dispositif d'échange thermique compact qui peut être intégré dans des conduites de circulation d'air préexistantes, ainsi que le procédé d'installation correspondant.Another object of the invention is to provide a compact heat exchange device which can be integrated into existing air circulation lines, as well as the corresponding installation method.

Selon l'invention, ces buts sont atteints notamment au moyen de l'objet des revendications dans les catégories correspondantes, notamment par un dispositif d'échange thermique pour l'installation à l'intérieur d'une conduite de circulation d'air préexistante, comprenant : une pluralité de feuilles de cuivre assemblées de manière à donner lieu à une pluralité de plaques creuses comportant chacune deux feuilles de cuivre, les bords des feuilles de chaque plaque étant soudés de façon à laisser un espace vide entre les feuilles, les plaques étant reliées entre-elles par des tuyaux, de manière à réaliser un circuit étanche de fluide caloporteur à l'intérieur des plaques.According to the invention, these objects are attained in particular by means of the subject of the claims in the corresponding categories, in particular by a heat exchange device for installation inside a pre-existing air circulation duct, comprising: a plurality of copper foils assembled so as to give rise to a plurality of hollow plates each having two copper sheets, the edges of the sheets of each plate being welded so as to leave a gap between the sheets, the plates being interconnected by pipes, so as to achieve a coolant circuit coolant inside the plates.

Cette solution présente notamment l'avantage par rapport à l'art antérieur que le dispositif d'échange thermique est de réalisation simple et économique et ses dimensions peuvent être modifiées aisément en choisissant les dimensions, le nombre et l'espacement des feuilles de cuivre qui le composent. Par ailleurs, les inventeurs ont constaté que le dispositif de l'invention, présentant des canaux essentiellement rectilignes au passage de l'air, ajoute une faible résistance aérodynamique et, de ce fait, peut être utilisé en des installations existantes sans modifier les ventilateurs ou les moyens de pulsion déjà présents. La réalisation en cuivre et la faible épaisseur des parois assurent d'ailleurs des échanges thermiques rapides.This solution has the advantage over the prior art that the heat exchange device is simple and economical and its dimensions can be easily modified by choosing the dimensions, the number and the spacing of the copper sheets which compose it. Moreover, the inventors have found that the device of the invention, having essentially straight channels to the passage of air, adds a low aerodynamic resistance and, therefore, can be used in existing installations without modifying the fans or the means of drive already present. The copper construction and the small thickness of the walls ensure rapid heat exchange.

Brève description des figuresBrief description of the figures

Des exemples de mise en oeuvre de l'invention sont indiqués dans la description illustrée par les figures annexées dans lesquelles :

  • La figure 1 illustre en perspective un exemple de dispositif d'échange thermique selon l'invention à l'intérieur d'une conduite d'air tubulaire.
  • La figure 2 représente en section un exemple de dispositif d'échange thermique selon l'invention à l'intérieur d'une conduite d'air tubulaire.
Examples of implementation of the invention are indicated in the description illustrated by the appended figures in which:
  • The figure 1 illustrates in perspective an example of heat exchange device according to the invention inside a tubular air pipe.
  • The figure 2 represents in section an example of heat exchange device according to the invention inside a tubular air duct.

Exemple(s) de mode de réalisation de l'inventionExample (s) of embodiment of the invention

Un mode de réalisation de l'invention sera maintenant décrit avec référence aux figures 1 et 2. L'invention concerne un échangeur de chaleur apte à l'installation dans une conduite 30 dans laquelle on fait circuler de l'air. La conduite 30 pourrait être une conduite d'aération, ou aussi une conduite d'évacuation de gaz de combustion, ou une conduite d'aspiration reliée à une hotte de cuisine, ou toute autre conduite, l'invention étant applicable à n'importe quel système de circulation dans lequel on souhaite échanger l'air ou le gaz.An embodiment of the invention will now be described with reference to Figures 1 and 2 . The invention relates to a heat exchanger suitable for installation in a pipe 30 in which air is circulated. The pipe 30 could be a vent pipe, or also a flue gas discharge pipe, or a suction pipe connected to a kitchen hood, or any other pipe, the invention being applicable to any which circulation system in which one wishes to exchange air or gas.

La conduite est, dans un cas typique, une conduite tubulaire réalisée en tôle d'acier, ou en un polymère synthétique, avec ou sans une couche (non représentée) d'isolation thermique. Le dispositif d'échange de l'invention consiste en un empilement de plaques creuses, chacune réalisée par juxtaposition de deux feuilles de cuivre 18a et 18b présentant une face concave et une face convexe. Les feuilles de cuivre 18a et 18b sont facilement réalisables par étampage et/ou emboutissage, à partir d'une feuille de cuivre d'épaisseur approprié, mais ils peuvent être mis en oeuvre par n'importe quelle technique idoine.The pipe is, in a typical case, a tubular pipe made of sheet steel, or a synthetic polymer, with or without a layer (not shown) of thermal insulation. The exchange device of the invention consists of a stack of hollow plates, each made by juxtaposition of two copper sheets 18a and 18b having a concave face and a convex face. The copper foils 18a and 18b are easily made by stamping and / or stamping, from a copper sheet of suitable thickness, but they can be implemented by any suitable technique.

Les feuilles de18a et 18b sont assemblées par paires, les faces concaves juxtaposées, et leurs bords 16 sont soudés ensemble, de manière à laisser un espace vide entre-elles dans lequel peut circuler de l'eau, ou un fluide caloporteur.The sheets 18a and 18b are assembled in pairs, the concave faces juxtaposed, and their edges 16 are welded together, so as to leave a gap between them in which can circulate water, or a heat transfer fluid.

Les tuyaux 23 relient les plaques entre-elles, et mettent les espaces creux en communication fluide, par des ouvertures réalisées préalablement dans les feuilles 18a et 18b de manière à réaliser un circuit étanche de fluide caloporteur à l'intérieur des plaques. La figure 2 illustre un exemple de dispositif d'échange thermique en section, dans lequel le circuit est visible.The pipes 23 connect the plates together, and put the hollow spaces in fluid communication, through openings made beforehand in the sheets 18a and 18b so as to provide a coolant circuit coolant inside the plates. The figure 2 illustrates an example of heat exchange device in section, in which the circuit is visible.

les tubulures 15 et 25 relient le dispositif d'échange thermique de l'invention à un circuit externe, non représenté, qui peut inclure des pompes de circulations, un système de stockage de chaleur, des radiateurs, évaporateurs, brûleurs, pompes de chaleur, ou tout autre dispositif pour transférer de la chaleur du et vers le fluide caloporteur et, par l'intermédiaire du dispositif de l'invention, vers l'air ou le gaz circulant dans la conduite 35. Préférablement, les tuyaux 23 et les tubulures 15, 25 sont en cuivre et sons soudés aux feuilles 18a, 18b.the pipes 15 and 25 connect the heat exchange device of the invention to an external circuit, not shown, which may include circulation pumps, a heat storage system, radiators, evaporators, burners, heat pumps, or any other device for transferring heat to and from the heat transfer fluid and, via the device of the invention, to the air or gas flowing in the pipe 35. Preferably, the pipes 23 and the pipes 15 25 are made of copper and are soldered to the sheets 18a, 18b.

Dans l'exemple représenté, les plaques creuses sont toutes connectées hydrauliquement en parallèle, dans le sens que le fluide caloporteur se répartit et traverse les plaques en même temps. On pourrait également connecter les plaques hydrauliquement en série, de façon a ce que le fluide caloporteur le traverse successivement une après l'autre.In the example shown, the hollow plates are all hydraulically connected in parallel, in the sense that the heat transfer fluid is distributed and passes through the plates at the same time. One could also connect the plates hydraulically in series, so that the heat transfer fluid passes through it successively one after the other.

Avantageusement, les plaques creuses sont parallèles entre elles, de façon à créer des canaux rectilignes droits de circulation d'air. Les inventeurs ont constaté que cette disposition permet d'atteindre un échange thermique optimal tout en minimisant les pertes dynamiques de circulation d'air. Pour cette raison, le système de l'invention ne nécessite pas d'une installation conséquente pour pulser l'air à l'intérieur de la conduite 35 et se prête bien à des systèmes dans lesquels la vitesse de l'air est faible, ou à des systèmes se basant sur la circulation naturelle.Advantageously, the hollow plates are parallel to each other, so as to create rectilinear right channels of air circulation. The inventors have found that this arrangement makes it possible to achieve optimal heat exchange while minimizing dynamic losses of air circulation. For this reason, the system of the invention does not require a consequent installation to pulsate the air inside the pipe 35 and lends itself well to systems in which the speed of the air is low, or systems based on natural circulation.

Un autre avantage du dispositif de l'invention est que les dimensions et le nombre de plaques est facilement adaptable, et le dispositif résultant est particulièrement compact. Le peut être utilisé comme 'retrofit' dans des installations existantes, préservant et réutilisant les conduites déjà posées. On peut insérer le dispositif par une ouverture temporaire réalisée dans une paroi d'une conduite.Another advantage of the device of the invention is that the dimensions and the number of plates is easily adaptable, and the resulting device is particularly compact. The can be used as 'retrofit' in existing installations, preserving and reusing existing pipes. The device can be inserted through a temporary opening made in a wall of a pipe.

Numéros de référence employés sur les figuresReference numbers used in the figures

3030
conduite d'airair duct
1515
conduite d'entrée du fluidefluid inlet line
2525
conduite de sortie du fluidefluid outlet pipe
18a,b18a, b
plaques de cuivrecopper plates
1616
joint de soudureweld joint
2323
sections de raccordconnecting sections

Claims (7)

Dispositif d'échange thermique pour l'installation à l'intérieur d'une conduite (30) de circulation d'air préexistante, comprenant : une pluralité de feuilles de cuivre (18a, 18b) assemblées de manière à donner lieu à une pluralité de plaques creuses comportant chacune deux feuilles de cuivre, les bords des feuilles de chaque plaque étant soudés (16) de façon à laisser un espace vide entre les feuilles, les plaques étant reliées entre-elles par des tuyaux (23), de manière à réaliser un circuit étanche de fluide caloporteur à l'intérieur des plaques.A heat exchange device for installation within a pre-existing air flow duct (30), comprising: a plurality of copper foils (18a, 18b) assembled so as to give rise to a plurality of hollow plates each comprising two copper sheets, the edges of the sheets of each plate being welded (16) so as to leave a gap between the sheets, the plates being interconnected by pipes (23) so as to realize a coolant circuit fluid inside the plates. Dispositif d'échange thermique selon la revendication précédente, dans lequel lesdits tuyaux (23) sont en cuivre et sont soudés auxdites feuilles de cuivre.Heat exchange device according to the preceding claim, wherein said pipes (23) are made of copper and are welded to said copper sheets. Dispositif d'échange thermique selon l'une des revendications précédentes, dans lequel lesdites feuilles de cuivre comportent une face concave et une face convexe, les faces concaves des feuilles dans chaque plaque. étant juxtaposées.Heat exchange device according to one of the preceding claims, wherein said copper foils have a concave face and a convex face, the concave faces of the sheets in each plate. being juxtaposed. Dispositif d'échange thermique selon l'une des revendications précédentes, dans lequel lesdites plaques creuses sont reliés en série ou en parallèle.Heat exchange device according to one of the preceding claims, wherein said hollow plates are connected in series or in parallel. Dispositif d'échange thermique selon l'une des revendications précédentes, comprenant en outre une pompe de circulation pour assurer le flux du fluide caloporteur.Heat exchange device according to one of the preceding claims, further comprising a circulation pump to ensure the flow of heat transfer fluid. Dispositif d'échange thermique selon l'une des revendications précédentes, dans lequel les plaques sont parallèles entre elles, de façon à créer des canaux droits dans lesquels circule l'air.Heat exchange device according to one of the preceding claims, wherein the plates are parallel to each other, so as to create straight channels in which the air flows. Procédé d'installation d'un dispositif d'échange thermique à l'intérieur d'une conduite de circulation d'air préexistante (30), comprenant : obtenir un dispositif d'échange thermique selon l'une des revendications précédentes, réaliser une ouverture dans une paroi de la dite conduite préexistante, insérer par l'ouverture le dispositif d'échange thermique à l'intérieur de ladite conduite : fermer l'ouverture de manière à recréer l'étanchéité de la conduite (30).A method of installing a heat exchange device within a pre-existing air flow line (30), comprising: obtaining a heat exchange device according to one of the preceding claims, providing an opening in a wall of said pre-existing pipe, inserting through the opening the heat exchange device inside said pipe: closing the opening so as to recreate the tightness of the pipe (30).
EP20130190168 2013-10-24 2013-10-24 Heat exchange device Withdrawn EP2865960A1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220146210A1 (en) * 2019-03-15 2022-05-12 Phase Change Energy Solutions, Inc. Thermal energy storage systems

Citations (8)

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Publication number Priority date Publication date Assignee Title
GB361328A (en) * 1930-08-18 1931-11-18 Stuart Melvill Burton Improvements relating to radiators or liquid coolers particularly applicabie to motor vehicles
US3104701A (en) * 1956-01-18 1963-09-24 Olin Mathieson Heat exchanger
US3512238A (en) * 1965-02-26 1970-05-19 Aluminium Francais & Cie Gener Method for fabricating radiators
FR2069950A1 (en) 1969-12-12 1971-09-10 Centre Scient Tech Batiment
FR2482266A1 (en) 1980-05-07 1981-11-13 Siegenia Frank Kg DEVICE VENTILATOR-AERATOR OF PREMISES WITH TWO SEPARATE FLOW CHANNELS FOR THE INTRODUCTION AND FOR THE EXHAUST OF AIR
GB2095394A (en) 1981-03-23 1982-09-29 Siegenia Frank Kg Room ventilating device
US20050133210A1 (en) * 2003-12-18 2005-06-23 Mitsuharu Inagaki Easily assembled cooler
WO2011022738A1 (en) * 2009-08-27 2011-03-03 Gerhard Kunze Liquid-gas heat exchanger

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB361328A (en) * 1930-08-18 1931-11-18 Stuart Melvill Burton Improvements relating to radiators or liquid coolers particularly applicabie to motor vehicles
US3104701A (en) * 1956-01-18 1963-09-24 Olin Mathieson Heat exchanger
US3512238A (en) * 1965-02-26 1970-05-19 Aluminium Francais & Cie Gener Method for fabricating radiators
FR2069950A1 (en) 1969-12-12 1971-09-10 Centre Scient Tech Batiment
FR2482266A1 (en) 1980-05-07 1981-11-13 Siegenia Frank Kg DEVICE VENTILATOR-AERATOR OF PREMISES WITH TWO SEPARATE FLOW CHANNELS FOR THE INTRODUCTION AND FOR THE EXHAUST OF AIR
GB2095394A (en) 1981-03-23 1982-09-29 Siegenia Frank Kg Room ventilating device
US20050133210A1 (en) * 2003-12-18 2005-06-23 Mitsuharu Inagaki Easily assembled cooler
WO2011022738A1 (en) * 2009-08-27 2011-03-03 Gerhard Kunze Liquid-gas heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220146210A1 (en) * 2019-03-15 2022-05-12 Phase Change Energy Solutions, Inc. Thermal energy storage systems

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