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EP3215801A1 - Heat-exchange element suitable for a heat exchange between first and second fluids, an exchanger core including the heat-exchange element and a heat exchanger including the exchanger core - Google Patents

Heat-exchange element suitable for a heat exchange between first and second fluids, an exchanger core including the heat-exchange element and a heat exchanger including the exchanger core

Info

Publication number
EP3215801A1
EP3215801A1 EP15794118.8A EP15794118A EP3215801A1 EP 3215801 A1 EP3215801 A1 EP 3215801A1 EP 15794118 A EP15794118 A EP 15794118A EP 3215801 A1 EP3215801 A1 EP 3215801A1
Authority
EP
European Patent Office
Prior art keywords
heat
exchange element
heat exchange
heat exchanger
channels
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Withdrawn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
EP15794118.8A
Other languages
German (de)
French (fr)
Inventor
Jérôme MOUGNIER
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.)
Valeo Systemes Thermiques SAS
Original Assignee
Valeo Systemes Thermiques SAS
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 Valeo Systemes Thermiques SAS filed Critical Valeo Systemes Thermiques SAS
Publication of EP3215801A1 publication Critical patent/EP3215801A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00321—Heat exchangers for air-conditioning devices
    • B60H1/00342—Heat exchangers for air-conditioning devices of the liquid-liquid type
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/0041—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having parts touching each other or tubes assembled in panel form
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/005—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for only one medium being tubes having bent portions or being assembled from bent tubes or being tubes having a toroidal configuration
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
    • F28D7/1684—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • 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
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0084—Condensers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • 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
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • F28F9/0258—Arrangements for coupling connectors with flow lines of quick acting type, e.g. with snap action

Definitions

  • HEAT EXCHANGE ELEMENT ADAPTED FOR EXCHANGE OF HEAT BETWEEN A FIRST AND A SECOND FLUID, AN EXCHANGE BEAM COMPRISING THE HEAT EXCHANGE ELEMENT AND A HEAT EXCHANGER COMPRISING THE EXCHANGE BEAM
  • the present invention relates to a heat exchange element adapted to allow the exchange of heat between a first and a second fluid. More specifically, the invention relates to a heat exchange element adapted to guide, in its interior a first fluid and, outside a second fluid to allow heat exchange through the wall of the element of heat exchange.
  • a refrigerant or refrigerant used to cool the passenger compartment of said motor vehicle circulates inside a heat exchanger, such as a condenser by example, during a cooling cycle.
  • the heat exchanger comprises two separate circuits, one for the refrigerant, the other for the fluid to cool the refrigerant.
  • the prior art discloses the use of a heat exchanger comprising an exchange beam, wherein said exchange beam comprises a stack of tubes.
  • the refrigerant can circulate inside the tubes, from a first end to a second end of the tubes.
  • the fluid used to cool the refrigerant circulates against the current of the refrigerant, from the second end to the first end of the tubes, between the two adjacent tubes.
  • the tubes comprise a wall of a thickness determined to withstand the high pressure to which the refrigerant circulating inside said tubes is subjected.
  • the heat exchange between the refrigerant and the fluid is carried out through this wall.
  • this solution is expensive and complex to implement.
  • An object of the present invention relates to a heat exchange element for improving the efficiency of the heat exchange between the first fluid flowing inside the heat exchange element and a second fluid flowing through. outside said heat exchange element.
  • the invention relates to a heat exchange element for a heat exchanger for exchanging heat between a first fluid and a second fluid, said heat exchange element being adapted to guide said first fluid to the fluid. interior of said heat exchange element and said second fluid to the outside of said heat exchange element, said heat exchange element comprising at least a first channel comprising a first substantially cylindrical wall and a second channel comprising a second substantially cylindrical wall, the at least first and second channels being connected to each other by a portion of the first wall adjacent to a portion of the second wall.
  • the heat exchange element comprises a plurality of channels, the odd channels being positioned on a first level and the even channels being interconnected between the odd channels on a second level.
  • the heat exchange element extends from a first end to a second end, wherein the heat exchange element comprises at least one undulation between this first and this second end.
  • the heat exchange element the first and / or second channel are of constant thickness.
  • the exchange beam for a heat exchanger comprises at least a first and a second heat exchange element, wherein the at least first and second heat exchange elements are positioned one on the other.
  • the heat exchanger comprises the exchange beam.
  • the heat exchanger is adapted for heat exchange between a refrigerant and brine.
  • the invention relates to an air conditioning system for a motor vehicle comprising the heat exchanger.
  • FIG. 1 represents an exploded view of a heat exchanger according to the present invention, making it possible to distinguish the various components of said heat exchanger
  • FIG. 2 shows a first embodiment of a heat exchange element according to the present invention
  • FIG. 3 represents a detailed view of the heat exchange element according to FIG. 2,
  • FIG. 4 shows a second embodiment of a heat exchange element according to the present invention.
  • FIG. 5 represents a detailed view of the heat exchange element according to FIG. 4.
  • FIG. 1 represents an exploded view of a heat exchanger 1 according to the invention.
  • the heat exchanger 1 is particularly suitable for use during a cooling cycle of an air conditioning system, for example in a motor vehicle.
  • the heat exchanger 1 is adapted to receive refrigerant in the direction of the boom 20, at a relatively high temperature and pressure.
  • the heat exchanger 1 comprises a set of tubes, spaced apart and adapted to withstand the relatively high temperature and pressure of the refrigerant.
  • the refrigerant is guided inside the heat exchanger 1 from its entrance towards an outlet, in the direction of the arrow 21 in FIG. 1.
  • a coolant such as water
  • the coolant circulates against the current of the refrigerant, thus allowing a heat exchange between the refrigerant and the cooling liquid within of the heat exchanger 1.
  • the coolant is guided to an outlet in the direction of the arrow 23.
  • the heat exchanger 1 is thus adapted to facilitate the movement of the coolant within the interior of the room. space between the different tubes used for refrigerant circulation.
  • the heat exchanger 1 comprises a housing comprising an upper wall 2, a bottom wall 3 and two side walls 4, 5.
  • the heat exchanger 1 comprises a first manifold 6 forming an inlet for to the refrigerant circulation.
  • the heat exchanger 1 comprises a second manifold 7 forming an outlet for the circulation of the refrigerant.
  • the wall 4 is provided with an opening 41 for receiving a connector 8 used as an inlet for the passage of the cooling liquid.
  • the wall 5 is provided with an opening 51 for receiving a connector 9 used as an outlet for the passage of the cooling liquid. As shown in FIG.
  • the collectors 6, 7 and the connectors 8, 9 representing the different inputs and outputs of the heat exchanger 1 are positioned in such a way as to allow the countercurrent circulation of the refrigerant and the liquid. in the heat exchanger 1.
  • the heat exchanger 1 comprises, within it, an exchange beam 30 comprising a stack of the heat exchange elements or tubes 31. Two adjacent heat exchange elements 31 define a space for the circulation of the coolant.
  • the exchange bundle 30 comprises, as an illustrative example, seven heat exchange elements 31 positioned one above the other.
  • the quantity of heat exchange elements 31 for forming an exchange bundle can vary depending on the use of the heat exchanger 1.
  • FIG. 2 shows a detailed view of the heat exchange element 31 according to a first embodiment of the invention.
  • the heat exchange element 31 comprises a plurality of channels described below and allowing the circulation of the refrigerant inside said heat exchange element 31.
  • FIG. 3 shows a detailed part of the heat exchange element 31.
  • the heat exchange element 31 comprises a plurality of channels 42, 43, 44, 45.
  • the channels 42, 43, 44, 45 enable the refrigerant to be guided from one end of the heat exchange element 31 to the opposite end of the heat exchange element 31.
  • the first measurement makes it possible to increase the outer surface of the heat exchange element 31.
  • the even channels 42, 44 are positioned on a first horizontal plane while the odd channels 41, 45 are positioned on a second horizontal plane.
  • Each channel 42, 43, 44, 45 is in substantially cylindrical form so as to form a tube.
  • the different channels 42, 43, 44, 45 are positioned, each in vertical planes parallel to each other.
  • the walls of said channels 42, 43, 44, 45 are connected to each other to form the heat exchange element 31.
  • the alternation of the first and second horizontal planes of the channels 42, 43, 44, 45 makes it possible to increase the external surface of the heat exchange element 31 and thus to increase the possibilities of heat exchange through the walls of the channels 42, 43, 44, 45, between the refrigerant circulating inside the channels and the cooling liquid circulating outside said channels 42, 43, 44, 45.
  • the heat exchange element 31 is provided with several corrugations 52, 53, 54. These corrugations 52, 53, 54 make it possible to increase the length of the path followed by the refrigerant inside. different channels 42, 43, 44, 45, from the first end to the second end of the heat exchange element 31.
  • the outer surface of the heat exchange element 31 is increased.
  • the amount of heat exchanged between the coolant and the coolant is also increased.
  • FIG. 4 shows an alternative embodiment of the heat exchange element according to the invention.
  • FIG. 4 shows a heat exchange element 131 comprising a plurality of channels described below and allowing the circulation of the refrigerant inside said heat exchange element 131.
  • the heat exchanging element 131 comprises a plurality of channels 42, 43, 44, 45.
  • the channels 42, 43, 44, 45 make it possible to guide the refrigerant inside them, from a first end of the heat exchange element 131 towards the opposite end of the heat exchange element 31.
  • the heat exchange element 131 comprises channels 141, 142, 143 in substantially cylindrical shape so as to to form a tube whose inner surface is substantially flat.
  • the channels 141, 142, 143 are positioned on the same horizontal plane and in different vertical planes parallel to each other.
  • the heat exchange element 131 is provided, from its first end towards its second end, with corrugations 151, 152. It will be noted, moreover, that the elements 31 and / or 131 comprise first and / or second channels 42, 43, 44, 45, 141, 142, 143 of constant thickness.

Landscapes

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

Abstract

The present invention relates to a heat-exchange element (31, 131) for a heat exchanger (1) for exchanging heat between a first fluid and a second fluid, said heat-exchange element (31, 131) being suitable for guiding said first fluid inside said heat-exchange element (31, 131) and said second fluid outside said heat-exchange element, said heat-exchange element (31, 131) including at least one first channel (42, 43, 44, 45; 141, 142, 143) including a first wall with an essentially cylindrical shape and one second channel (42, 43, 44, 45; 141, 142, 143) including a second wall with an essentially cylindrical shape, said at least first and second channels (42, 43, 44, 45; 141, 142, 143) being connected to one another by a portion of the first wall adjacent to a portion of the second wall.

Description

ELEMENT D'ECHANGE DE CHALEUR ADAPTE POUR UN ECHANGE DE CHALEUR ENTRE UN PREMIER ET UN DEUXIEME FLUIDE, UN FAISCEAU D'ECHANGE COMPRENANT L'ELEMENT D'ECHANGE DE CHALEUR ET UN ECHANGEUR DE CHALEUR COMPRENANT LE FAISCEAU D'ECHANGE  HEAT EXCHANGE ELEMENT ADAPTED FOR EXCHANGE OF HEAT BETWEEN A FIRST AND A SECOND FLUID, AN EXCHANGE BEAM COMPRISING THE HEAT EXCHANGE ELEMENT AND A HEAT EXCHANGER COMPRISING THE EXCHANGE BEAM
Domaine de l'invention La présente invention concerne un élément d'échange de chaleur adapté pour permettre l'échange de chaleur entre un premier et un deuxième fluide. Plus précisément, l'invention concerne un élément d'échange de chaleur adapté pour guider, en son intérieur un premier fluide et, en son extérieur un deuxième fluide afin de permettre un échange de chaleur au travers de la paroi de l'élément d'échange de chaleur. Field of the Invention The present invention relates to a heat exchange element adapted to allow the exchange of heat between a first and a second fluid. More specifically, the invention relates to a heat exchange element adapted to guide, in its interior a first fluid and, outside a second fluid to allow heat exchange through the wall of the element of heat exchange.
Etat de la technique State of the art
Dans un système de climatisation, par exemple un système de climatisation destiné à un véhicule automobile, un fluide frigorigène ou réfrigérant utilisé pour refroidir l'habitacle dudit véhicule automobile circule à l'intérieur d'un échangeur de chaleur, tel qu'un condenseur par exemple, lors d'un cycle de refroidissement. In an air conditioning system, for example an air conditioning system for a motor vehicle, a refrigerant or refrigerant used to cool the passenger compartment of said motor vehicle circulates inside a heat exchanger, such as a condenser by example, during a cooling cycle.
Dans l'art antérieur, il est connu d'obtenir le refroidissement d'un réfrigérant à l'aide d'un échangeur de chaleur, ledit échangeur de chaleur étant adapté pour permettre un échange de chaleur entre le réfrigérant et un fluide, tel que de l'eau, pour refroidir ledit réfrigérant. In the prior art, it is known to obtain the cooling of a refrigerant using a heat exchanger, said heat exchanger being adapted to allow a heat exchange between the refrigerant and a fluid, such as water to cool said refrigerant.
Dans ce but, l'échangeur de chaleur, selon l'art antérieur, comprend deux circuits distincts, l'un destiné au réfrigérant, l'autre destiné au fluide pour refroidir le réfrigérant. Ainsi, l'art antérieur divulgue l'utilisation d'un échangeur de chaleur comprenant un faisceau d'échange, dans lequel ledit faisceau d'échange comprend un empilement de tubes. Le réfrigérant peut circuler à l'intérieur des tubes, d'une première extrémité vers une deuxième extrémité des tubes. Le fluide utilisé pour refroidir le réfrigérant circule à contre-courant du réfrigérant, depuis la deuxième extrémité vers la première extrémité des tubes, entre les deux tubes adjacents. For this purpose, the heat exchanger, according to the prior art, comprises two separate circuits, one for the refrigerant, the other for the fluid to cool the refrigerant. Thus, the prior art discloses the use of a heat exchanger comprising an exchange beam, wherein said exchange beam comprises a stack of tubes. The refrigerant can circulate inside the tubes, from a first end to a second end of the tubes. The fluid used to cool the refrigerant circulates against the current of the refrigerant, from the second end to the first end of the tubes, between the two adjacent tubes.
Selon l'art antérieur, les tubes comprennent une paroi d'une épaisseur déterminée pour supporter la haute pression à laquelle est soumis le réfrigérant circulant à l'intérieur desdits tubes. L'échange de chaleur entre le réfrigérant et le fluide est réalisé au travers de cette paroi. Afin d'améliorer l'efficacité de l'échange de chaleur, il est possible de fournir, sur la paroi interne des tubes, des éléments en forme de protubérances qui s'étendent vers l'intérieur des tubes afin d'augmenter la surface de contact à l'intérieur des tubes. Cependant, cette solution est coûteuse et complexe à mettre en œuvre. According to the prior art, the tubes comprise a wall of a thickness determined to withstand the high pressure to which the refrigerant circulating inside said tubes is subjected. The heat exchange between the refrigerant and the fluid is carried out through this wall. In order to improve the efficiency of the heat exchange, it is possible to provide, on the inner wall of the tubes, protuberance-shaped elements which extend towards the inside of the tubes in order to increase the surface of the tube. contact inside the tubes. However, this solution is expensive and complex to implement.
Des solutions permettant d'améliorer l'échange de chaleur entre un premier fluide circulant à l'intérieur d'un élément d'échange d'un échangeur de chaleur et un deuxième fluide circulant à l'extérieur dudit échangeur de chaleur s'avèrent nécessaires afin d'accroître l'efficacité de l'échange de chaleur. Solutions for improving the heat exchange between a first fluid flowing inside an exchange element of a heat exchanger and a second fluid flowing outside said heat exchanger are necessary to increase the efficiency of the heat exchange.
Objet de l'invention Object of the invention
Un but de la présente invention concerne un élément d'échange de chaleur visant à améliorer l'efficacité de l'échange de chaleur entre le premier fluide circulant à l'intérieur de l'élément d'échange de chaleur et un deuxième fluide circulant à l'extérieur dudit élément d'échange de chaleur. An object of the present invention relates to a heat exchange element for improving the efficiency of the heat exchange between the first fluid flowing inside the heat exchange element and a second fluid flowing through. outside said heat exchange element.
Ainsi, l'invention concerne un élément d'échange de chaleur pour un échangeur de chaleur permettant l'échange de chaleur entre un premier fluide et un deuxième fluide, ledit élément d'échange de chaleur étant adapté pour guider ledit premier fluide à l'intérieur dudit élément d'échange de chaleur et ledit deuxième fluide à l'extérieur dudit élément d'échange de chaleur, ledit élément d'échange de chaleur comprenant au moins un premier canal comprenant une première paroi de forme essentiellement cylindrique et un deuxième canal comprenant une deuxième paroi de forme essentiellement cylindrique, les au moins premier et deuxième canaux étant connectés l'un à l'autre par une portion de la première paroi adjacente à une portion de la deuxième paroi. Thus, the invention relates to a heat exchange element for a heat exchanger for exchanging heat between a first fluid and a second fluid, said heat exchange element being adapted to guide said first fluid to the fluid. interior of said heat exchange element and said second fluid to the outside of said heat exchange element, said heat exchange element comprising at least a first channel comprising a first substantially cylindrical wall and a second channel comprising a second substantially cylindrical wall, the at least first and second channels being connected to each other by a portion of the first wall adjacent to a portion of the second wall.
Selon un mode de réalisation de l'invention, l'élément d'échange de chaleur comprend une pluralité de canaux, les canaux impairs étant positionnés sur un premier niveau et les canaux pairs étant interconnectés entre les canaux impairs sur un deuxième niveau. According to one embodiment of the invention, the heat exchange element comprises a plurality of channels, the odd channels being positioned on a first level and the even channels being interconnected between the odd channels on a second level.
Selon un mode de réalisation de l'invention, l'élément d'échange de chaleur s'étend d'une première extrémité vers une deuxième extrémité, dans lequel l'élément d'échange de chaleur comprend au moins une ondulation entre cette première et cette deuxième extrémité. According to one embodiment of the invention, the heat exchange element extends from a first end to a second end, wherein the heat exchange element comprises at least one undulation between this first and this second end.
Selon un mode de réalisation de l'invention, l'élément d'échange de chaleur les premiers et/ou deuxième canaux sont d'épaisseur constante. According to one embodiment of the invention, the heat exchange element the first and / or second channel are of constant thickness.
Selon un mode de réalisation de l'invention, le faisceau d'échange pour un échangeur de chaleur comprend au moins un premier et un deuxième élément d'échange de chaleur, dans lequel les au moins premier et deuxième élément d'échange de chaleur sont positionnés l'un sur l'autre. According to one embodiment of the invention, the exchange beam for a heat exchanger comprises at least a first and a second heat exchange element, wherein the at least first and second heat exchange elements are positioned one on the other.
Selon un mode de réalisation de l'invention, l'échangeur de chaleur comprend le faisceau d'échange. According to one embodiment of the invention, the heat exchanger comprises the exchange beam.
Selon un mode de réalisation de l'invention, l'échangeur de chaleur est adapté pour un échange de chaleur entre un fluide réfrigérant et de l'eau glycolée. Selon un deuxième aspect, l'invention concerne un système de climatisation pour un véhicule automobile comprenant l'échangeur de chaleur. According to one embodiment of the invention, the heat exchanger is adapted for heat exchange between a refrigerant and brine. According to a second aspect, the invention relates to an air conditioning system for a motor vehicle comprising the heat exchanger.
Brève description des dessins Brief description of the drawings
Les but, objet et caractéristiques de la présente invention ainsi que ses avantages apparaîtront plus clairement à la lecture de la description ci-dessous des modes de réalisation préférés d'un échangeur de chaleur selon l'invention, faite en référence aux dessins dans lesquels : la figure 1 représente une vue éclatée d'un échangeur de chaleur selon la présente invention, permettant de distinguer les différents composants dudit échangeur de chaleur, The objects, objects and features of the present invention as well as its advantages will appear more clearly on reading the description below of the preferred embodiments of a heat exchanger according to the invention, with reference to the drawings in which: FIG. 1 represents an exploded view of a heat exchanger according to the present invention, making it possible to distinguish the various components of said heat exchanger,
la figure 2 montre un premier mode de réalisation d'un élément d'échange de chaleur selon la présente invention,  FIG. 2 shows a first embodiment of a heat exchange element according to the present invention,
la figure 3 représente une vue détaillée de l'élément d'échange de chaleur selon la figure 2,  FIG. 3 represents a detailed view of the heat exchange element according to FIG. 2,
la figure 4 montre un deuxième mode de réalisation d'un élément d'échange de chaleur selon la présente invention, et  FIG. 4 shows a second embodiment of a heat exchange element according to the present invention, and
- la figure 5 représente une vue détaillée de l'élément d'échange de chaleur selon la figure 4.  FIG. 5 represents a detailed view of the heat exchange element according to FIG. 4.
Description détaillée des modes de réalisation La description ci-après a pour but d'exposer l'invention de manière suffisamment claire et complète, notamment à l'aide d'exemples, mais ne doit pas être considérée comme limitant l'étendue de la protection aux modes de réalisation particuliers et aux exemples présentés ci-après. La figure 1 représente une vue éclatée d'un échangeur de chaleur 1 selon l'invention. L'échangeur de chaleur 1 est particulièrement adapté pour être utilisé au cours d'un cycle de refroidissement d'un système de climatisation, par exemple au sein d'un véhicule automobile. DETAILED DESCRIPTION OF THE EMBODIMENTS The following description is intended to explain the invention in a sufficiently clear and complete manner, in particular by means of examples, but should not be considered as limiting the scope of protection. to the particular embodiments and examples presented hereinafter. FIG. 1 represents an exploded view of a heat exchanger 1 according to the invention. The heat exchanger 1 is particularly suitable for use during a cooling cycle of an air conditioning system, for example in a motor vehicle.
Comme montré sur la figure 1, l'échangeur de chaleur 1 est adapté pour recevoir le réfrigérant selon la direction de la flèche 20, à une température et une pression relativement élevées. L'échangeur de chaleur 1 comprend un ensemble de tubes, espacés entre eux et adaptés pour résister à la température et à la pression relativement élevées du réfrigérant. Le réfrigérant est guidé à l'intérieur de l'échangeur de chaleur 1 depuis son entrée en direction d'une sortie, selon la direction de la flèche 21 sur la figure 1. Afin de refroidir le réfrigérant, un liquide de refroidissement, tel que de l'eau, est introduit dans l'échangeur de chaleur 1 selon la direction de la flèche 22, le liquide de refroidissement circule à contre-courant du réfrigérant, permettant ainsi un échange de chaleur entre le réfrigérant et le liquide de refroidissement au sein de l'échangeur de chaleur 1. Ensuite, le liquide de refroidissement est guidé vers une sortie selon la direction de la flèche 23. L'échangeur de chaleur 1 est ainsi adapté pour faciliter le déplacement du liquide de refroidissement à l'intérieur de l'espace entre les différents tubes utilisés pour la circulation du réfrigérant.  As shown in Figure 1, the heat exchanger 1 is adapted to receive refrigerant in the direction of the boom 20, at a relatively high temperature and pressure. The heat exchanger 1 comprises a set of tubes, spaced apart and adapted to withstand the relatively high temperature and pressure of the refrigerant. The refrigerant is guided inside the heat exchanger 1 from its entrance towards an outlet, in the direction of the arrow 21 in FIG. 1. In order to cool the refrigerant, a coolant, such as water, is introduced into the heat exchanger 1 in the direction of the arrow 22, the coolant circulates against the current of the refrigerant, thus allowing a heat exchange between the refrigerant and the cooling liquid within of the heat exchanger 1. Then, the coolant is guided to an outlet in the direction of the arrow 23. The heat exchanger 1 is thus adapted to facilitate the movement of the coolant within the interior of the room. space between the different tubes used for refrigerant circulation.
En effet, l'échangeur de chaleur 1 comprend un boîtier comportant une paroi supérieure 2, une paroi inférieure 3 et deux parois latérales 4, 5. A une première extrémité, l'échangeur de chaleur 1 comprend un premier collecteur 6 formant une entrée destinée à la circulation du réfrigérant. A l'extrémité opposée, l'échangeur de chaleur 1 comprend un deuxième collecteur 7 formant une sortie destinée à la circulation du réfrigérant. La paroi 4 est pourvue d'une ouverture 41 permettant de recevoir un connecteur 8 utilisé comme entrée destinée au passage du liquide de refroidissement. De façon similaire, la paroi 5 est pourvue d'une ouverture 51 permettant de recevoir un connecteur 9 utilisé comme sortie destinée au passage du liquide de refroidissement. Comme indiqué sur la figure 1, les collecteurs 6, 7 et les connecteurs 8, 9 représentant les différentes entrées et sorties de l'échangeur de chaleur 1 sont positionnés de manière à permettre la circulation, à contre-courant, du réfrigérant et du liquide de refroidissement à l'intérieur de l'échangeur de chaleur 1. L'échangeur de chaleur 1 comprend, en son sein, un faisceau d'échange 30 comportant un empilement des éléments d'échange de chaleur ou tubes 31. Deux éléments d'échange de chaleur 31 adjacents définissent un espace permettant la circulation du liquide de refroidissement. Selon la figure 1, le faisceau d'échange 30 comprend, à titre d'exemple illustratif, sept éléments d'échange de chaleur 31 positionnés les uns au-dessus des autres. La quantité d'éléments d'échange de chaleur 31 pour former un faisceau d'échange peut varier selon l'utilisation de l'échangeur de chaleur 1. Indeed, the heat exchanger 1 comprises a housing comprising an upper wall 2, a bottom wall 3 and two side walls 4, 5. At a first end, the heat exchanger 1 comprises a first manifold 6 forming an inlet for to the refrigerant circulation. At the opposite end, the heat exchanger 1 comprises a second manifold 7 forming an outlet for the circulation of the refrigerant. The wall 4 is provided with an opening 41 for receiving a connector 8 used as an inlet for the passage of the cooling liquid. Similarly, the wall 5 is provided with an opening 51 for receiving a connector 9 used as an outlet for the passage of the cooling liquid. As shown in FIG. 1, the collectors 6, 7 and the connectors 8, 9 representing the different inputs and outputs of the heat exchanger 1 are positioned in such a way as to allow the countercurrent circulation of the refrigerant and the liquid. in the heat exchanger 1. The heat exchanger 1 comprises, within it, an exchange beam 30 comprising a stack of the heat exchange elements or tubes 31. Two adjacent heat exchange elements 31 define a space for the circulation of the coolant. According to FIG. 1, the exchange bundle 30 comprises, as an illustrative example, seven heat exchange elements 31 positioned one above the other. The quantity of heat exchange elements 31 for forming an exchange bundle can vary depending on the use of the heat exchanger 1.
La figure 2 montre une vue détaillée de l'élément d'échange de chaleur 31 selon un premier mode de réalisation de l'invention. L'élément d'échange de chaleur 31 comprend une pluralité de canaux décrits ci-dessous et permettant la circulation du réfrigérant à l'intérieur dudit élément d'échange de chaleur 31. Figure 2 shows a detailed view of the heat exchange element 31 according to a first embodiment of the invention. The heat exchange element 31 comprises a plurality of channels described below and allowing the circulation of the refrigerant inside said heat exchange element 31.
La figure 3 montre une partie détaillée de l'élément d'échange de chaleur 31. Ainsi l'élément d'échange de chaleur 31 comprend une pluralité de canaux 42, 43, 44, 45. Les canaux 42, 43, 44, 45 permettent de guider, en leur intérieur, le réfrigérant, d'une première extrémité de l'élément d'échange de chaleur 31 vers l'extrémité opposée de l'élément d'échange de chaleur 31. La première mesure permet d'augmenter la surface extérieure de l'élément d'échange de chaleur 31. Les canaux pairs 42, 44 sont positionnés sur un premier plan horizontal alors que les canaux impairs 41, 45 sont positionnés sur un deuxième plan horizontal. Chaque canal 42, 43, 44, 45 se présente sous une forme essentiellement cylindrique de manière à former un tube. Les différents canaux 42, 43, 44, 45 sont positionnés, chacun selon des plans verticaux parallèles entre eux. Les parois desdits canaux 42, 43, 44, 45 sont connectées les unes aux autres pour former l'élément d'échange de chaleur 31. FIG. 3 shows a detailed part of the heat exchange element 31. Thus, the heat exchange element 31 comprises a plurality of channels 42, 43, 44, 45. The channels 42, 43, 44, 45 enable the refrigerant to be guided from one end of the heat exchange element 31 to the opposite end of the heat exchange element 31. The first measurement makes it possible to increase the outer surface of the heat exchange element 31. The even channels 42, 44 are positioned on a first horizontal plane while the odd channels 41, 45 are positioned on a second horizontal plane. Each channel 42, 43, 44, 45 is in substantially cylindrical form so as to form a tube. The different channels 42, 43, 44, 45 are positioned, each in vertical planes parallel to each other. The walls of said channels 42, 43, 44, 45 are connected to each other to form the heat exchange element 31.
L'alternance des premier et deuxième plans horizontaux des canaux 42, 43, 44, 45 permet d'augmenter la surface extérieure de l'élément d'échange de chaleur 31 et d'accroître ainsi les possibilités d'échange de chaleur au travers des parois des canaux 42, 43, 44, 45, entre le réfrigérant circulant à l'intérieur des canaux et le liquide de refroidissement circulant à l'extérieur desdits canaux 42, 43, 44, 45. Comme montré sur la figure 2, l'élément d'échange de chaleur 31 est pourvu de plusieurs ondulations 52, 53, 54. Ces ondulations 52, 53, 54 permettent d'augmenter la longueur du chemin suivi par le réfrigérant à l'intérieur des différents canaux 42, 43, 44, 45, depuis la première extrémité vers la deuxième extrémité de l'élément d'échange de chaleur 31. Ainsi, la surface extérieure de l'élément d'échange de chaleur 31 est augmentée. Par conséquent, la quantité de chaleur, échangée entre le réfrigérant et le liquide de refroidissement, est également augmentée. The alternation of the first and second horizontal planes of the channels 42, 43, 44, 45 makes it possible to increase the external surface of the heat exchange element 31 and thus to increase the possibilities of heat exchange through the walls of the channels 42, 43, 44, 45, between the refrigerant circulating inside the channels and the cooling liquid circulating outside said channels 42, 43, 44, 45. As shown in FIG. 2, the heat exchange element 31 is provided with several corrugations 52, 53, 54. These corrugations 52, 53, 54 make it possible to increase the length of the path followed by the refrigerant inside. different channels 42, 43, 44, 45, from the first end to the second end of the heat exchange element 31. Thus, the outer surface of the heat exchange element 31 is increased. As a result, the amount of heat exchanged between the coolant and the coolant is also increased.
La combinaison des caractéristiques techniques décrites ci-dessus, concernant l'alternance des plans horizontaux des différents canaux 42, 43, 44, 45 et la présence des ondulations 52, 53, 54 garantit un échange de chaleur optimal entre le réfrigérant et le liquide de refroidissement utilisés au sein de l'échangeur de chaleur 1 selon la présente invention. La figure 4 présente un mode de réalisation alternatif de l'élément d'échange de chaleur selon l'invention. Ainsi, la figure 4 montre un élément d'échange de chaleur 131 comprenant une pluralité de canaux décrits ci-dessous et permettant la circulation du réfrigérant à l'intérieur dudit élément d'échange de chaleur 131. Comme montré en détail sur la figure 5, l'élément d'échange de chaleur 131 comprend une pluralité de canaux 42, 43, 44, 45. Les canaux 42, 43, 44, 45 permettent de guider, en leur intérieur, le réfrigérant, d'une première extrémité de l'élément d'échange de chaleur 131 vers l'extrémité opposée de l'élément d'échange de chaleur 31. L'élément d'échange de chaleur 131 comprend des canaux 141, 142, 143 se présentant sous une forme essentiellement cylindrique de manière à former un tube dont la surface intérieure est essentiellement plane. Les canaux 141, 142, 143 sont positionnés sur un même plan horizontal et selon différents plans verticaux parallèles entre eux. L'élément d'échange de chaleur 131 est pourvu, depuis sa première extrémité vers sa deuxième extrémité, d'ondulations 151, 152. On remarquera, en outre, que les éléments 31 et/ou 131 comprennent des premiers et/ou deuxième canaux 42, 43, 44, 45, 141, 142, 143 d'épaisseur constante. La combinaison des caractéristiques techniques décrites ci-dessus concernant le positionnement des canaux 141, 142, 143 sur un même plan horizontal, la présence des ondulations 151, 152 et la surface intérieure, essentiellement plane, des canaux garantit un échange de chaleur optimal entre le réfrigérant et le liquide de refroidissement utilisés au sein de l'échangeur de chaleur 1 selon la présente invention. The combination of the technical characteristics described above, concerning the alternation of the horizontal planes of the different channels 42, 43, 44, 45 and the presence of the corrugations 52, 53, 54, ensures an optimal heat exchange between the refrigerant and the liquid of cooling used within the heat exchanger 1 according to the present invention. Figure 4 shows an alternative embodiment of the heat exchange element according to the invention. Thus, FIG. 4 shows a heat exchange element 131 comprising a plurality of channels described below and allowing the circulation of the refrigerant inside said heat exchange element 131. As shown in detail in FIG. 5 the heat exchanging element 131 comprises a plurality of channels 42, 43, 44, 45. The channels 42, 43, 44, 45 make it possible to guide the refrigerant inside them, from a first end of the heat exchange element 131 towards the opposite end of the heat exchange element 31. The heat exchange element 131 comprises channels 141, 142, 143 in substantially cylindrical shape so as to to form a tube whose inner surface is substantially flat. The channels 141, 142, 143 are positioned on the same horizontal plane and in different vertical planes parallel to each other. The heat exchange element 131 is provided, from its first end towards its second end, with corrugations 151, 152. It will be noted, moreover, that the elements 31 and / or 131 comprise first and / or second channels 42, 43, 44, 45, 141, 142, 143 of constant thickness. The combination of the technical characteristics described above concerning the positioning of the channels 141, 142, 143 on the same horizontal plane, the presence of the corrugations 151, 152 and the essentially flat inner surface of the channels guarantees an optimal heat exchange between the coolant and coolant used within the heat exchanger 1 according to the present invention.

Claims

Revendications claims
Elément d'échange de chaleur (31, 131) pour un échangeur de chaleur (1) permettant l'échange de chaleur entre un premier fluide et un deuxième fluide, ledit élément d'échange de chaleur (31, 131) étant adapté pour guider ledit premier fluide à l'intérieur dudit élément d'échange de chaleur (31, 131) et ledit deuxième fluide à l'extérieur dudit élément d'échange de chaleur, ledit élément d'échange de chaleur (31, 131) comprenant au moins un premier canal (42, 43, 44, 45 ; 141, 142,143) comprenant une première paroi de forme essentiellement cylindrique et un deuxième canal (42, 43, 44, 45 ; 141, 142,143) comprenant une deuxième paroi de forme essentiellement cylindrique, les au moins premier et deuxième canal (42, 43, 44, 45 ; 141, 142,143) étant connectés l'un à l'autre par une portion de la première paroi adjacente à une portion de la deuxième paroi. Heat exchange element (31, 131) for a heat exchanger (1) for exchanging heat between a first fluid and a second fluid, said heat exchange element (31, 131) being adapted to guide said first fluid within said heat exchange element (31, 131) and said second fluid outside said heat exchange element, said heat exchange element (31, 131) comprising at least a first channel (42, 43, 44, 45; 141, 142, 143) comprising a first substantially cylindrical wall and a second channel (42, 43, 44, 45; 141, 142, 143) comprising a second substantially cylindrical wall, the at least first and second channels (42, 43, 44, 45; 141, 142, 143) being connected to each other by a portion of the first wall adjacent to a portion of the second wall.
Elément d'échange de chaleur (31, 131) selon la revendication 1, dans lequel l'élément d'échange de chaleur (31, 131) comprend une pluralité de canaux (42, 43, 44, 45), les canaux impairs étant positionnés sur un premier niveau et les canaux pairs étant interconnectés entre les canaux impairs sur un deuxième niveau. A heat exchange element (31, 131) according to claim 1, wherein the heat exchange element (31, 131) comprises a plurality of channels (42, 43, 44, 45), the odd channels being positioned on a first level and the even channels being interconnected between the odd channels on a second level.
Elément d'échange de chaleur (31, 131) selon la revendication 1 ou 2, dans lequel l'élément d'échange de chaleur s'étend d'une première extrémité vers une deuxième extrémité, dans lequel l'élément d'échange de chaleur (31, 131) comprend au moins une ondulation entre cette première et cette deuxième extrémité. A heat exchange element (31, 131) according to claim 1 or 2, wherein the heat exchange element extends from a first end to a second end, wherein the heat exchange element heat (31, 131) comprises at least one undulation between this first and this second end.
4. Elément d'échange de chaleur (31, 131) selon l'une des revendications précédentes, dans lequel les premiers et/ou deuxième canaux (42, 43, 44, 45 ; 141, 142,143) sont d'épaisseur constante. 4. heat exchange element (31, 131) according to one of the preceding claims, wherein the first and / or second channel (42, 43, 44, 45; 141, 142, 143) are of constant thickness.
5. Faisceau d'échange (30) pour un échangeur de chaleur (1) comprenant au moins un premier et un deuxième éléments d'échange de chaleur (31, 131) selon l'une des revendications précédentes, dans lequel les au moins premier et deuxième éléments d'échange de chaleur (31, 131) sont positionnés l'un sur l'autre. 5. Exchange beam (30) for a heat exchanger (1) comprising at least a first and a second heat exchange element (31, 131) according to one of the preceding claims, wherein the at least first and second heat exchange elements (31, 131) are positioned one above the other.
6. Echangeur de chaleur (1) comprenant le faisceau d'échange (30) selon la revendication 5. 6. Heat exchanger (1) comprising the exchange beam (30) according to claim 5.
7. Echangeur de chaleur (1) selon la revendication 6, dans lequel l'échangeur de chaleur (1) est adapté pour un échange de chaleur entre un fluide réfrigérant et de l'eau glycolée. 7. Heat exchanger (1) according to claim 6, wherein the heat exchanger (1) is adapted for a heat exchange between a refrigerant and brine.
EP15794118.8A 2014-11-04 2015-11-04 Heat-exchange element suitable for a heat exchange between first and second fluids, an exchanger core including the heat-exchange element and a heat exchanger including the exchanger core Withdrawn EP3215801A1 (en)

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FR1460605A FR3028018B1 (en) 2014-11-04 2014-11-04 HEAT EXCHANGE ELEMENT ADAPTED FOR EXCHANGE OF HEAT BETWEEN A FIRST AND A SECOND FLUID, AN EXCHANGE BEAM COMPRISING THE HEAT EXCHANGE ELEMENT AND A HEAT EXCHANGER COMPRISING THE EXCHANGE BEAM
PCT/EP2015/075752 WO2016071419A1 (en) 2014-11-04 2015-11-04 Heat-exchange element suitable for a heat exchange between first and second fluids, an exchanger core including the heat-exchange element and a heat exchanger including the exchanger core

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