EP1308687B1 - Tube for plate-like heat exchanger - Google Patents

Tube for plate-like heat exchanger Download PDF

Info

Publication number
EP1308687B1
EP1308687B1 EP02021612A EP02021612A EP1308687B1 EP 1308687 B1 EP1308687 B1 EP 1308687B1 EP 02021612 A EP02021612 A EP 02021612A EP 02021612 A EP02021612 A EP 02021612A EP 1308687 B1 EP1308687 B1 EP 1308687B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tube
exchanger tube
section
plates
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 - Lifetime
Application number
EP02021612A
Other languages
German (de)
French (fr)
Other versions
EP1308687A1 (en
Inventor
Frédéric Bousquet
Patrick Samy
Sylvain Moreau
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 Climatisation SA
Original Assignee
Valeo Climatisation SA
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 Climatisation SA filed Critical Valeo Climatisation SA
Publication of EP1308687A1 publication Critical patent/EP1308687A1/en
Application granted granted Critical
Publication of EP1308687B1 publication Critical patent/EP1308687B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • 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
    • F28D1/0325—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 the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another
    • F28D1/0333—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 the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members
    • F28D1/0341—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 the plates having lateral openings therein for circulation of the heat-exchange medium from one conduit to another the plates having integrated connecting members with U-flow or serpentine-flow inside the conduits

Definitions

  • the technical sector of the present invention is that of heat exchangers and more particularly tubes to disruptive plates that equip them. These exchangers are used especially as an evaporator in a system of air conditioning of a motor vehicle or as radiator in the cooling circuit of such a vehicle.
  • Heat exchangers called plate heat exchangers in form of I or U, are generally constituted by the assembly of several flat tubes juxtaposing with each other others and connected to each other by an interlayer whose purpose is to promote the thermal exchange. Each of these tubes is formed by the face-to-face assembly of two plates that define thus a circulation conduit in which the fluid passes.
  • This fluid can be a coolant in the case of a evaporator or a coolant in the case of a radiator.
  • disruptors are often part of the plates forming the tube.
  • the purpose of these disrupters is to create turbulence during the passage of the fluid so, on the one hand to increase the heat exchange between the fluid and the plates and on the other hand to ensure the mechanical strength of the tube bundle of the exchanger.
  • the purpose of the present invention is therefore to solve the disadvantages described above mainly by arranging the disruptive on the plates so as to maintain a section of passage of the substantially constant fluid in the circuit while retaining the benefits of the turbulence created by these last. It is therefore a question of optimizing the reduction of load losses / favoring heat exchange.
  • the subject of the invention is therefore a heat exchanger tube traveled by a fluid, intended to promote heat exchange between an external medium and said fluid, formed by at least two plates connected together to define a conduit of circulation whose cross section is a section of passage of said fluid, said circulation duct having a fluid inlet port and a fluid outlet port, characterized in that said tube comprises an occultation means partial circulation duct intended to maintain substantially constant the passage section of said duct between the inlet port and the outlet port.
  • the tube is in general form of "U" having a base connected to two branches, said branches being separated by a rib of which the end is terminated by a junction, the passage section to keep constant being any of the ones that extends between the rib and a peripheral edge of the U-shaped tube Passing through the partial occultation means.
  • the shape of the junction is circular with a diameter greater than twice the width of the rib.
  • the peripheral edge has connection areas connecting the two branches at the base of the U-shaped tube, areas being circular in shape and radius allowing keep the passage section constant.
  • the partial occultation means is defined by the positioning of disrupters with respect to others so that their cross sections cumulative occultation are substantially constant on the the entire length of the circulation duct.
  • the crossing section is constant when the difference between a minimum passage section and a passage section determined maximum in the circulation duct does not exceed 20 percent.
  • This means of occultation is also defined by the shape of disruptive to each other in the conduit of circulation.
  • the disrupters are arranged on at least one of the plates.
  • the disturbers are arranged on at least one plates so that the direction of the axis supporting their larger dimensions is substantially parallel to the flow direction of the fluid.
  • the disrupters are present on both plates.
  • At least one disruptor of one of the plates is arranged next to at least one disruptor of the other plate.
  • the disrupters of each plate are arranged opposite facing each other, the directions of their axes supporting their larger dimensions being substantially parallel between them.
  • the Disturbants are oval or circular in shape.
  • the disruptors are in the shape of a rhombus, advantageously rounded at its angles.
  • Disrupters are pyramidal in shape, the basis of the pyramidal shape being common with one of the plates.
  • a heat exchanger comprises at least a tube defined according to any of the features preceding.
  • the heat exchanger is a radiator or an evaporator.
  • a first advantage of the device according to the invention lies in the lowering of noise nuisances of this type exchanger.
  • Another advantage lies in the optimization of the combination of performance with respect to noise.
  • Another advantage of the invention lies in the possibility to optimize the internal pressure drop of the tube.
  • Another advantage is to improve the combination of performance characteristics with respect to mechanical strength.
  • Figure 1 illustrates the use that can be made of a tube 1 according to the invention mounted here in a heat exchanger 2.
  • the latter may be an evaporator, a radiator or a condenser.
  • evaporator which consists of a multitude of tubes 1.
  • the number of tubes 1 forming the exchanger 2 is a function of a required heat exchange characteristic, this number is represented in this figure for illustrative purposes and not limiting.
  • a fin spacer 6 is installed between each tube 1 so as to optimize the heat exchange.
  • the tube 1 is generally formed by two plates 4 and 5 arranged against each other.
  • the juxtaposition of several tubes thus formed makes it possible to constitute a heat exchanger, whose purpose is to promote the heat transfer between a interior medium, preferably a fluid 3, and a medium outside 7 which may be for example air.
  • Both plates 4 and 5 are in contact with each other on their edges 8 devices so as to define, with their inner walls 9, a circulation conduit 10.
  • the latter transports the fluid 3 which may be, for example, coolant in the case of a radiator, or a refrigerant in the case of a evaporator or condenser.
  • This duct 10 is characterized by a passage section 11 which corresponds to the surface filled by the fluid at specific locations in the conduit of circulation. This section of passage 11 will be illustrated more details in the description of FIGS. 4, 5, 7, 8, 9.
  • FIG. 2 shows more precisely a plate of the tube 1 of the heat exchanger 2.
  • This tube comprises a means partial occultation 12 of the circulation duct 10 of in order to keep the passage section 11 constant at all along the circuit which extends from an inlet 13 of the fluid 3 to an outlet 14 of said fluid.
  • the plate 4 front view can highlight the positioning of disrupters 15, 16, 17, some by relationship to others and their possible forms.
  • a disruptive axis 18 illustrating the disruptive positioning on a horizontal plane and an axis 19 by disruptor illustrating its positioning on a plane vertical.
  • the judicious combination of positioning two interferers, for example 15 and 16, on a vertical plane and on a horizontal plane thus allows the partial occultation means 12 thus formed to keep the passage section 11 constant.
  • the positioning of these disrupters is such that they are in staggered, that is to say that the axes 18 of the disrupters are staggered with a constant pitch or not along a vertical axis in the flow direction of the fluid.
  • disrupters can present all appropriate forms able to limit the speed of a fluid. In particular, these may take a form oval, circular, diamond-shaped or diamond-shaped, rounded to its angles. These disrupters are manufactured, for example, by stamping and may present, inter alia, a form pyramid. The base of the pyramidal form of the disrupters is common with the plate 4 or 5, in particular according to its wall internal 9.
  • FIG 3 is a sectional view F-F of Figure 2 illustrating a tube 1 according to the invention.
  • the two plates 4 and 5 forming this tube are arranged face to face.
  • the disrupter 15, present on the plate 4 is next to another disruptor 15a present on the plate 5.
  • These two disruptors are in contact within the circulation duct 12 and can therefore participate in the mechanical relationship that connects the two plates 4 and 5. That is to say that the latter can be united to one another, for example by welding or brazing, and thus strengthen the tube structure 1.
  • Disturbators 16 and 16a shown respectively on plate 4 and 5 have a particularity with respect to in the sense that their ends do not touch each other.
  • the combination of characteristics of positioning and forms of disrupters described above and the gap that separates at least one from their ends with respect to the opposite wall is a function of the level required acoustic efficiency in the heat exchanger 2. This yield is dependent on the speed of fluid 3 inside of the tube 1, speed made substantially constant by the means Partial occultation 12.
  • FIGS 4 and 5 are illustrations of the constancy of the passage section 11 throughout the course followed by the fluid 3 in the circulation duct 10 of a tube 1 in form "I" or in the straight portions of a shaped tube of "U".
  • Constant section means a difference of the order of 20% between a mini section and a maxi performed anywhere on the tube.
  • Figure 5 shows the common elements already referenced in during the description of Figure 4.
  • performed according to B-B in Figure 2 illustrates the progressivity pyramidal disturbers 15, 15a and 17, 17a.
  • the occultation was caused by two disturbers in contact, we are here in the presence of four disturbers either of lesser depth or of pyramid.
  • occultation section of a disruptor with the concealment section of the neighboring disrupter (s) 15a, 16, 16a, 17, 17a must be substantially constant.
  • occultation section the volume encroached in the circulation duct 12 by a disrupter, limiting volume the passage of the fluid 3.
  • This sum deduced from the total section of the circulation duct 10 is then constant whatever the place where a cut is made between the inlet orifice 13 and the outlet port 14.
  • the passage section 11 of the fluid is illustrated by the hatched part.
  • Figure 6 is particular to a tube 1 in the form of "U".
  • This form has two branches 24 and 25 interconnected by a base 26.
  • a circulation duct 10 is thus formed. whose inlet port 13 and the outlet port 14 are substantially aligned.
  • the branch 24 of the "U” is separated of the branch 25 by a rib 20.
  • the circulation duct 10 is then delimited by the peripheral edge 8, the walls internal 9 of the two plates 4 and 5, the form of the disrupters and by the rib 20.
  • the latter is finished on the base side 26 by a preferably circular junction.
  • the diameter of this circular junction 21 is greater than twice the width of the rib 20.
  • the circulation duct 10 is limited by the peripheral edge 8, it presents a particular shape illustrated by two connecting zones 22 and 23 of circular and radius general shapes allowing keep a constant section. Junction 21, the disturbances and the connection zones 22 and 23 are of the partial occultation means 12. Their combinations of shapes, positioning and dimensions contribute to maintain substantially constant the passage section 11 in the part bottom of tube 1 in the shape of "U".
  • the orientation of disruptors is arranged in such a way that their sections cumulative cross-sections are constant and therefore indirectly the passage section of the circulation duct 10, despite the particularity of this area of the "U" tube. Indeed, in this case some disrupters, for example 27 and 27a, may have an axis supporting their largest non parallel dimensions with the axis of circulation of the fluid.
  • FIG. 7 is a representation showing the references common elements described in Figures 4 and 5. This figure illustrates a section C-C of FIG. substantially horizontally at the junction 21. The radius of this junction 21, the positioning and / or the shape of the or disrupters create a blocking section that will limit the fluid velocity in this part of the duct circulation 10. The passage section 11 in this part of the duct is illustrated by hatching.
  • FIG. 8 shows a passage section 11 in a cross section D-D of Figure 2. This section is obscured by the combination of characteristics dimensions of the junction 21, of the connection zone 22 and disturbers 27, 27a and 28, 28a.
  • the disrupters 27 and 27a have their ends in contact so as to create a maximum concealment section.
  • the disturbers 28 and 28a are of lower depth or pyramidal shape, the occultation section is reduced.
  • the sum of the sections of occultation of the interferers 27, 27a, 28, 28a, junctions 21 and connection areas 22 tends to maintain substantially constant the passage section 11.
  • the latter is illustrated in this figure by a hatched area.
  • Figure 9 is a variant of layout and shape of disturbers 30, 30a and 29, 29a. Indeed, in this cup Vertical according to E-E, disrupters take a shape Circular particularly suitable for this part of the duct 10. Their occultation sections added to that of the junction 21 contribute to prevent the overspeed of the fluid which is at the origin of certain noise nuisances heat exchangers.
  • the description above is in no way limited to disruptors face to face with their ends in contact. he is of course reminded that these may not be in contact, be arranged along different axes or be arranged on one or the other or both plates 4 or 5 forming the tube 1.
  • the combination of the characteristics of positioning and / or shape of the elements constituting the means of blackout 12 depends on the necessities required heat exchange and the reduction of pollution sound.
  • the occultation means 12 is of course applicable to a heat exchanger tube having a generally "U" shape, but it is easy to apply this means of occultation to I-shaped plates or other forms of conduit of circulation.
  • the tube defined above is particularly adapted to the radiators and evaporator of an installation of air conditioning of a motor vehicle.

Landscapes

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

Abstract

Two plates (4,5) are connected to each other to form a circulation duct (10) having a fluid inlet orifice and a fluid outlet orifice. A partial blocking component keeps the cross-section of the passage between the fluid inlet and outlet orifices constant.

Description

Le secteur technique de la présente invention est celui des échangeurs de chaleur et plus particulièrement des tubes à plaques à perturbateurs qui les équipent. Ces échangeurs sont utilisés notamment comme évaporateur dans un système de conditionnement d'air d'un véhicule automobile ou comme radiateur dans le circuit de refroidissement d'un tel véhicule.The technical sector of the present invention is that of heat exchangers and more particularly tubes to disruptive plates that equip them. These exchangers are used especially as an evaporator in a system of air conditioning of a motor vehicle or as radiator in the cooling circuit of such a vehicle.

Les échangeurs de chaleur appelés échangeurs à plaques, en forme de I ou de U, sont généralement constitués par l'assemblage de plusieurs tubes plats se juxtaposant les uns aux autres et reliés entre eux par un intercalaire dont le but est de favoriser l'échange thermique. Chacun de ces tubes est formé par l'assemblage en face-à-face de deux plaques qui définissent ainsi un conduit de circulation dans lequel passe le fluide. Ce fluide peut être un liquide réfrigérant dans le cas d'un évaporateur ou un liquide de refroidissement dans le cas d'un radiateur.Heat exchangers called plate heat exchangers, in form of I or U, are generally constituted by the assembly of several flat tubes juxtaposing with each other others and connected to each other by an interlayer whose purpose is to promote the thermal exchange. Each of these tubes is formed by the face-to-face assembly of two plates that define thus a circulation conduit in which the fluid passes. This fluid can be a coolant in the case of a evaporator or a coolant in the case of a radiator.

Il est connu de l'état de l'art de disposer des perturbateurs dans le conduit de circulation du fluide. Ces perturbateurs font bien souvent partie intégrante des plaques formant le tube. Le but de ces perturbateurs est de créer des turbulences lors du passage du fluide de manière, d'une part à augmenter l'échange thermique entre le fluide et les plaques et d'autre part à assurer la tenue mécanique du faisceau de tubes de l'échangeur.It is known from the state of the art to dispose of disruptors in the fluid circulation duct. These disrupters are often part of the plates forming the tube. The purpose of these disrupters is to create turbulence during the passage of the fluid so, on the one hand to increase the heat exchange between the fluid and the plates and on the other hand to ensure the mechanical strength of the tube bundle of the exchanger.

L'un des principaux inconvénients de cette configuration est la création de nuisances acoustiques par survitesse du fluide, nuisances qu'il est de plus en plus important de combattre compte tenu du niveau croissant de confort réclamé à l'intérieur d'un véhicule.One of the main disadvantages of this configuration is the creation of acoustic nuisances due to the overspeed of the fluid, nuisances that it is increasingly important to fight given the increasing level of comfort demanded inside of a vehicle.

Un autre inconvénient de ce type de montage réside dans le fait qu'il n'offre pas de bonnes performances de circulation et un rendement optimum compte tenu de la disposition sensiblement anarchique des perturbateurs dans l'art antérieur.Another disadvantage of this type of assembly lies in the does not offer good traffic performance and optimum performance considering the provision substantially anarchic disrupters in the prior art.

Le but de la présente invention est donc de résoudre les inconvénients décrits ci-dessus principalement en disposant les perturbateurs sur les plaques de manière à maintenir une section de passage du fluide sensiblement constante dans le circuit tout en conservant les avantages liés aux turbulences créées par ces derniers. Il s'agit donc d'optimiser le couple diminution des pertes de charge / favorisation de l'échange thermique.The purpose of the present invention is therefore to solve the disadvantages described above mainly by arranging the disruptive on the plates so as to maintain a section of passage of the substantially constant fluid in the circuit while retaining the benefits of the turbulence created by these last. It is therefore a question of optimizing the reduction of load losses / favoring heat exchange.

L'invention a donc pour objet un tube d'échangeur de chaleur parcouru par un fluide, destiné à favoriser l'échange thermique entre un milieu extérieur et ledit fluide, formé par au moins deux plaques reliées entre elles pour définir un conduit de circulation dont la section transversale est une section de passage dudit fluide, ledit conduit de circulation ayant un orifice d'entrée du fluide et un orifice de sortie du fluide, caractérisé en ce que ledit tube comprend un moyen d'occultation partielle du conduit de circulation destiné à maintenir sensiblement constante la section de passage dudit conduit entre l'orifice d'entrée et l'orifice de sortie.The subject of the invention is therefore a heat exchanger tube traveled by a fluid, intended to promote heat exchange between an external medium and said fluid, formed by at least two plates connected together to define a conduit of circulation whose cross section is a section of passage of said fluid, said circulation duct having a fluid inlet port and a fluid outlet port, characterized in that said tube comprises an occultation means partial circulation duct intended to maintain substantially constant the passage section of said duct between the inlet port and the outlet port.

Selon une caractéristique de l'invention, le tube est en forme générale de « U » comportant une base reliée à deux branches, lesdites branches étant séparées par une nervure dont l'extrémité est terminée par une jonction, la section de passage à maintenir constante étant l'une quelconque de celle qui s'étend entre la nervure et un bord périphérique du tube en « U » en passant par le moyen d'occultation partielle.According to one characteristic of the invention, the tube is in general form of "U" having a base connected to two branches, said branches being separated by a rib of which the end is terminated by a junction, the passage section to keep constant being any of the ones that extends between the rib and a peripheral edge of the U-shaped tube Passing through the partial occultation means.

Selon une autre caractéristique de l'invention, la forme de la jonction est circulaire d'un diamètre supérieur à deux fois la largeur de la nervure.According to another characteristic of the invention, the shape of the junction is circular with a diameter greater than twice the width of the rib.

Selon encore une autre caractéristique de l'invention, le bord périphérique présente des zones de raccordement reliant les deux branches à la base du tube en forme de « U », lesdites zones étant de forme circulaire et de rayon permettant de conserver constante la section de passage.According to yet another characteristic of the invention, the peripheral edge has connection areas connecting the two branches at the base of the U-shaped tube, areas being circular in shape and radius allowing keep the passage section constant.

Avantageusement, le moyen d'occultation partielle est défini par le positionnement de perturbateurs les uns par rapport aux autres de telle sorte que leurs sections transversales d'occultation cumulées soient sensiblement constantes sur la totalité de la longueur du conduit de circulation.Advantageously, the partial occultation means is defined by the positioning of disrupters with respect to others so that their cross sections cumulative occultation are substantially constant on the the entire length of the circulation duct.

La section de passage est constante lorsque la différence entre une section de passage minimum et une section de passage maximum déterminées dans le conduit de circulation n'excède pas 20 pour cent.The crossing section is constant when the difference between a minimum passage section and a passage section determined maximum in the circulation duct does not exceed 20 percent.

Ce moyen d'occultation est défini aussi par la forme des perturbateurs les uns par rapport aux autres dans le conduit de circulation.This means of occultation is also defined by the shape of disruptive to each other in the conduit of circulation.

Avantageusement encore, les perturbateurs sont disposés sur au moins l'une des plaques.Advantageously, the disrupters are arranged on at least one of the plates.

De même, les perturbateurs sont disposés sur au moins une des plaques de telle sorte que la direction de l'axe supportant leurs plus grandes dimensions est sensiblement parallèle à la direction de circulation du fluide.Likewise, the disturbers are arranged on at least one plates so that the direction of the axis supporting their larger dimensions is substantially parallel to the flow direction of the fluid.

Selon une variante de l'invention, les perturbateurs sont présents sur les deux plaques.According to a variant of the invention, the disrupters are present on both plates.

Selon une autre variante de l'invention, au moins un perturbateur d'une des plaques est disposé en regard d'au moins un perturbateur de l'autre plaque.According to another variant of the invention, at least one disruptor of one of the plates is arranged next to at least one disruptor of the other plate.

Les perturbateurs de chaque plaque sont disposés en regard les uns face aux autres, les directions de leurs axes supportant leurs plus grandes dimensions étant sensiblement parallèles entre elles.The disrupters of each plate are arranged opposite facing each other, the directions of their axes supporting their larger dimensions being substantially parallel between them.

Selon une caractéristique de l'invention, les plaques sont solidarisées par les perturbateurs.According to one characteristic of the invention, the plates are solidarized by the disrupters.

Selon une autre caractéristique de l'invention, les perturbateurs sont de forme ovale ou de forme circulaire.According to another characteristic of the invention, the Disturbants are oval or circular in shape.

Selon encore une autre caractéristique de l'invention, les perturbateurs sont de la forme d'un losange, avantageusement arrondi à ses angles.According to yet another characteristic of the invention, the disruptors are in the shape of a rhombus, advantageously rounded at its angles.

Les perturbateurs sont de forme pyramidale, la base de la forme pyramidale étant commune avec l'une des plaques.Disrupters are pyramidal in shape, the basis of the pyramidal shape being common with one of the plates.

Avantageusement, un échangeur de chaleur comprend au moins un tube défini selon l'une quelconques des caractéristiques précédentes.Advantageously, a heat exchanger comprises at least a tube defined according to any of the features preceding.

L'échangeur de chaleur est un radiateur ou un évaporateur.The heat exchanger is a radiator or an evaporator.

Un tout premier avantage du dispositif selon l'invention réside dans l'abaissement des nuisances sonores de ce type d'échangeur.A first advantage of the device according to the invention lies in the lowering of noise nuisances of this type exchanger.

Un autre avantage réside dans l'optimisation de la combinaison rendement par rapport aux nuisances sonores.Another advantage lies in the optimization of the combination of performance with respect to noise.

Un autre avantage de l'invention réside dans la possibilité d'optimiser la perte de charge interne du tube.Another advantage of the invention lies in the possibility to optimize the internal pressure drop of the tube.

Un autre avantage est d'améliorer la combinaison des caractéristiques de rendement par rapport à la tenue mécanique.Another advantage is to improve the combination of performance characteristics with respect to mechanical strength.

D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement à la lecture de la description donnée ci-après à titre indicatif en relation avec des dessins dans lesquels :

  • la figure 1 est une vue en perspective d'un échangeur de chaleur utilisant le tube selon l'invention,
  • la figure 2 est une vue partielle de face d'une des plaques en forme de « U » du tube d'échangeur de chaleur selon l'invention,
  • la figure 3 est une vue en coupe longitudinale selon F-F illustrant les deux plaques du tube d'échangeur de chaleur selon l'invention,
  • les figures 4, 5, 7, 8 et 9 sont des vues en coupe transversale du tube d'échangeur de chaleur respectivement selon A-A, B-B, C-C, D-D et E-E illustrant la constance des sections de passage tout au long du conduit de circulation.
  • la figure 6 est une vue de face d'une plaque mettant en valeur plus particulièrement la base de la forme en « U ».
Other characteristics, details and advantages of the invention will emerge more clearly on reading the description given below as an indication in relation to drawings in which:
  • FIG. 1 is a perspective view of a heat exchanger using the tube according to the invention,
  • FIG. 2 is a partial front view of one of the "U" -shaped plates of the heat exchanger tube according to the invention,
  • FIG. 3 is a longitudinal sectional view along FF illustrating the two plates of the heat exchanger tube according to the invention,
  • Figures 4, 5, 7, 8 and 9 are cross-sectional views of the heat exchanger tube respectively AA, BB, CC, DD and EE illustrating the constancy of the passage sections throughout the flow conduit.
  • Figure 6 is a front view of a plate highlighting more particularly the base of the "U" shape.

La figure 1 illustre l'utilisation qui peut être faite d'un tube 1 selon l'invention monté ici dans un échangeur de chaleur 2. Ce dernier peut être un évaporateur, un radiateur ou un condenseur. Dans le cas d'espèce représenté ici, il s'agit d'un évaporateur qui est constitué d'une multitude de tubes 1. Le nombre de tubes 1 formant l'échangeur 2 est fonction d'une caractéristique d'échange thermique requise, ce nombre est représenté sur cette figure à titre illustratif et non limitatif. Un intercalaire à ailettes 6 est installé entre chaque tube 1 de manière à optimiser l'échange thermique.Figure 1 illustrates the use that can be made of a tube 1 according to the invention mounted here in a heat exchanger 2. The latter may be an evaporator, a radiator or a condenser. In the case represented here, it is a question of evaporator which consists of a multitude of tubes 1. The number of tubes 1 forming the exchanger 2 is a function of a required heat exchange characteristic, this number is represented in this figure for illustrative purposes and not limiting. A fin spacer 6 is installed between each tube 1 so as to optimize the heat exchange.

Le tube 1 est formé généralement par deux plaques 4 et 5 disposées l'une contre l'autre. La juxtaposition de plusieurs tubes ainsi formés permet de constituer un échangeur de chaleur, dont le but est de favoriser le transfert calorifique entre un milieu intérieur, avantageusement un fluide 3, et un milieu extérieur 7 qui pourra être par exemple de l'air. Les deux plaques 4 et 5 sont en contact entre elles sur leurs bords périphériques 8 de manière à définir, avec leurs parois internes 9, un conduit de circulation 10. Ce dernier transporte le fluide 3 qui peut être par exemple, du liquide de refroidissement dans le cas d'un radiateur, ou un fluide frigorigène dans le cas d'un évaporateur ou d'un condenseur. Ce conduit 10 est caractérisé par une section de passage 11 qui correspond à la surface remplie par le fluide à des endroits déterminés du conduit de circulation. Cette section de passage 11 sera illustrée plus en détails au cours de la description des figures 4, 5, 7, 8, 9.The tube 1 is generally formed by two plates 4 and 5 arranged against each other. The juxtaposition of several tubes thus formed makes it possible to constitute a heat exchanger, whose purpose is to promote the heat transfer between a interior medium, preferably a fluid 3, and a medium outside 7 which may be for example air. Both plates 4 and 5 are in contact with each other on their edges 8 devices so as to define, with their inner walls 9, a circulation conduit 10. The latter transports the fluid 3 which may be, for example, coolant in the case of a radiator, or a refrigerant in the case of a evaporator or condenser. This duct 10 is characterized by a passage section 11 which corresponds to the surface filled by the fluid at specific locations in the conduit of circulation. This section of passage 11 will be illustrated more details in the description of FIGS. 4, 5, 7, 8, 9.

La figure 2 montre plus précisément une plaque du tube 1 de l'échangeur de chaleur 2. Ce tube comprend un moyen d'occultation partielle 12 du conduit de circulation 10 de manière à maintenir constante la section de passage 11 tout au long du circuit qui s'étend d'un orifice d'entrée 13 du fluide 3 jusqu'à un orifice de sortie 14 dudit fluide.FIG. 2 shows more precisely a plate of the tube 1 of the heat exchanger 2. This tube comprises a means partial occultation 12 of the circulation duct 10 of in order to keep the passage section 11 constant at all along the circuit which extends from an inlet 13 of the fluid 3 to an outlet 14 of said fluid.

Cette figure souligne la constitution du moyen d'occultation partielle 12. La plaque 4 vue de face permet de mettre en valeur le positionnement de perturbateurs 15, 16, 17 les uns par rapport aux autres ainsi que leurs formes éventuelles. On y a représenté un axe 18 par perturbateur illustrant le positionnement du perturbateur sur un plan horizontal et un axe 19 par perturbateur illustrant son positionnement sur un plan vertical. La combinaison judicieuse du positionnement de deux perturbateurs, par exemple 15 et 16, sur un plan vertical et sur un plan horizontal permet donc au moyen d'occultation partielle 12 formé ainsi de maintenir constante la section de passage 11. Le positionnement de ces perturbateurs est tel qu'ils sont en quinconce, c'est-à-dire que les axes 18 des perturbateurs sont décalés d'un pas constant ou non selon un axe vertical dans le sens de circulation du fluide. Ces perturbateurs peuvent présenter toutes formes appropriées aptes à limiter la vitesse d'un fluide. En particulier, ceux-ci pourront prendre une forme générale ovale, circulaire, losangée ou losangée arrondie à ses angles. Ces perturbateurs sont fabriqués, par exemple, par emboutissage et peuvent présenter, entre autres, une forme pyramidale. La base de la forme pyramidale des perturbateurs est commune avec la plaque 4 ou 5, en particulier selon sa paroi interne 9. This figure underlines the constitution of the means of occultation partial 12. The plate 4 front view can highlight the positioning of disrupters 15, 16, 17, some by relationship to others and their possible forms. There was represented a disruptive axis 18 illustrating the disruptive positioning on a horizontal plane and an axis 19 by disruptor illustrating its positioning on a plane vertical. The judicious combination of positioning two interferers, for example 15 and 16, on a vertical plane and on a horizontal plane thus allows the partial occultation means 12 thus formed to keep the passage section 11 constant. The positioning of these disrupters is such that they are in staggered, that is to say that the axes 18 of the disrupters are staggered with a constant pitch or not along a vertical axis in the flow direction of the fluid. These disrupters can present all appropriate forms able to limit the speed of a fluid. In particular, these may take a form oval, circular, diamond-shaped or diamond-shaped, rounded to its angles. These disrupters are manufactured, for example, by stamping and may present, inter alia, a form pyramid. The base of the pyramidal form of the disrupters is common with the plate 4 or 5, in particular according to its wall internal 9.

La figure 3 est une vue en coupe F-F de la figure 2 illustrant un tube 1 selon l'invention. Les deux plaques 4 et 5 formant ce tube sont disposées face à face. On peut voir sur cette figure que le perturbateur 15, présent sur la plaque 4, est en regard d'un autre perturbateur 15a présent sur la plaque 5. Ces deux perturbateurs sont en contact à l'intérieur du conduit de circulation 12 et peuvent donc participer à la relation mécanique qui relie les deux plaques 4 et 5. C'est-à-dire que ces derniers peuvent être solidarisés l'un à l'autre, par exemple par soudage ou brasage, et renforcer ainsi la structure du tube 1.Figure 3 is a sectional view F-F of Figure 2 illustrating a tube 1 according to the invention. The two plates 4 and 5 forming this tube are arranged face to face. We can see on this figure that the disrupter 15, present on the plate 4, is next to another disruptor 15a present on the plate 5. These two disruptors are in contact within the circulation duct 12 and can therefore participate in the mechanical relationship that connects the two plates 4 and 5. That is to say that the latter can be united to one another, for example by welding or brazing, and thus strengthen the tube structure 1.

Bien entendu, ces perturbateurs peuvent être totalement en regard l'un de l'autre de telle sorte que leurs axes 18 et 19 soient confondus, mais ils peuvent aussi n'être que partiellement en face l'un de l'autre selon l'axe 18 ou 19 ou une combinaison des deux (non représentée).Of course, these disrupters can be totally in look at each other so that their axes 18 and 19 be confused, but they can also be just partially opposite each other along axis 18 or 19 or a combination of both (not shown).

Les perturbateurs 16 et 16a représentés respectivement sur la plaque 4 et 5 présentent une particularité par rapport aux précédents en ce sens que leurs extrémités ne se touchent pas.Disturbators 16 and 16a shown respectively on plate 4 and 5 have a particularity with respect to in the sense that their ends do not touch each other.

En tout état de cause, la combinaison des caractéristiques de positionnement et de formes des perturbateurs décrit ci-dessus ainsi que l'écart qui sépare l'une au moins de leurs extrémités par rapport à la paroi opposée est fonction du niveau de rendement acoustique requis dans l'échangeur thermique 2. Ce rendement est dépendant de la vitesse du fluide 3 à l'intérieur du tube 1, vitesse rendue sensiblement constante par le moyen d'occultation partielle 12.In any case, the combination of characteristics of positioning and forms of disrupters described above and the gap that separates at least one from their ends with respect to the opposite wall is a function of the level required acoustic efficiency in the heat exchanger 2. This yield is dependent on the speed of fluid 3 inside of the tube 1, speed made substantially constant by the means Partial occultation 12.

Les figures 4 et 5 sont des illustrations de la constance de la section de passage 11 tout au long du parcours suivi par le fluide 3 dans le conduit de circulation 10 d'un tube 1 en forme générale de « I » ou dans les parties droites d'un tube en forme de « U ». On entend par section constante une différence de l'ordre de 20% entre une section mini et une section maxi effectuées à n'importe quel endroit du tube.Figures 4 and 5 are illustrations of the constancy of the passage section 11 throughout the course followed by the fluid 3 in the circulation duct 10 of a tube 1 in form "I" or in the straight portions of a shaped tube of "U". Constant section means a difference of the order of 20% between a mini section and a maxi performed anywhere on the tube.

La figure 4 est l'illustration d'une de ces sections 11 visualisable lors d'une coupe A-A faite sur la figure 2. On y a représenté les deux plaques 4 et 5 jointes selon leurs bords périphériques 8. Le conduit de circulation 10 est ici délimité par ce bord périphérique 8, les parois internes 9 des deux plaques 4 et 5, la forme des perturbateurs 15 et 15a et, dans le cas d'un tube 1 en forme de « U », par une nervure 20. Cette figure montre à titre illustratif deux perturbateurs 15 et 15a disposés face à face, leurs extrémités étant en contact. La section de passage 11 est représentée sur la figure par la partie hachurée.Figure 4 is an illustration of one of these sections 11 viewable during an A-A cut made in Figure 2. We have represented the two plates 4 and 5 joined according to their edges 8. The circulation duct 10 is delimited here by this peripheral edge 8, the inner walls 9 of the two plates 4 and 5, the shape of the disrupters 15 and 15a and, in the case of a tube 1 in the shape of a "U", by a rib 20. This figure shows for illustrative purposes two disrupters 15 and 15a arranged face to face, their ends being in contact. The passage section 11 is shown in the figure by the hatched part.

La figure 5 reprend les éléments communs déjà référencés au cours de la description de la figure 4. Par contre, la coupe effectuée selon B-B sur la figure 2 illustre la progressivité pyramidale des perturbateurs 15, 15a et 17, 17a. Alors que dans la figure 4, l'occultation était provoquée par deux perturbateurs en contact, on est ici en présence de quatre perturbateurs soit de moindre profondeur, soit de forme pyramidale.Figure 5 shows the common elements already referenced in during the description of Figure 4. On the other hand, performed according to B-B in Figure 2 illustrates the progressivity pyramidal disturbers 15, 15a and 17, 17a. Whereas in FIG. 4, the occultation was caused by two disturbers in contact, we are here in the presence of four disturbers either of lesser depth or of pyramid.

L'addition de la section d'occultation d'un perturbateur 15 avec la section d'occultation du ou des perturbateurs voisins 15a, 16, 16a, 17, 17a doit être sensiblement constante. On entend par section d'occultation le volume empiété dans le conduit de circulation 12 par un perturbateur, volume qui limite le passage du fluide 3. Cette somme déduite de la section totale du conduit de circulation 10 est alors constante quel que soit l'endroit ou l'on effectue une coupe entre l'orifice d'entrée 13 et l'orifice de sortie 14. Dans le cas représenté sur cette figure, la section de passage 11 du fluide est illustré par la partie hachurée.The addition of the occultation section of a disruptor with the concealment section of the neighboring disrupter (s) 15a, 16, 16a, 17, 17a must be substantially constant. We means by occultation section the volume encroached in the circulation duct 12 by a disrupter, limiting volume the passage of the fluid 3. This sum deduced from the total section of the circulation duct 10 is then constant whatever the place where a cut is made between the inlet orifice 13 and the outlet port 14. In the case shown on this figure, the passage section 11 of the fluid is illustrated by the hatched part.

La figure 6 est particulière à un tube 1 en forme de « U ». Cette forme présente deux branches 24 et 25 reliées entre elles par une base 26. On forme ainsi un conduit de circulation 10 dont l'orifice d'entrée 13 et l'orifice de sortie 14 sont sensiblement alignés. Ainsi la branche 24 du « U » est séparée de la branche 25 par une nervure 20. Le conduit de circulation 10 est alors délimité par le bord périphérique 8, les parois internes 9 des deux plaques 4 et 5, la forme des perturbateurs et par la nervure 20. Cette dernière est terminée du coté base 26 par une jonction avantageusement circulaire. Le diamètre de cette jonction circulaire 21 est supérieur à deux fois la largeur de la nervure 20. Au niveau de la transition entre la base 26 et les branches 24 et 25, le conduit de circulation 10 est limité par le bord périphérique 8, celui-ci présente une forme particulière illustrée par deux zones de raccordement 22 et 23 de formes générales circulaires et de rayon permettant de conserver une section constante. La jonction 21, les perturbateurs et les zones de raccordement 22 et 23 font parties du moyen d'occultation partielle 12. Leurs combinaisons de formes, positionnements et dimensions concourent à maintenir sensiblement constante la section de passage 11 dans la partie basse du tube 1 en forme de « U ». L'orientation des perturbateurs est agencée de manière à ce que leurs sections transversales cumulées soient constantes et donc, indirectement la section de passage du conduit de circulation 10, malgré la particularité de cette zone du tube en « U ». En effet, dans ce cas certains perturbateurs, par exemple 27 et 27a, peuvent avoir un axe supportant leurs plus grandes dimensions non parallèles avec l'axe de circulation du fluide.Figure 6 is particular to a tube 1 in the form of "U". This form has two branches 24 and 25 interconnected by a base 26. A circulation duct 10 is thus formed. whose inlet port 13 and the outlet port 14 are substantially aligned. Thus the branch 24 of the "U" is separated of the branch 25 by a rib 20. The circulation duct 10 is then delimited by the peripheral edge 8, the walls internal 9 of the two plates 4 and 5, the form of the disrupters and by the rib 20. The latter is finished on the base side 26 by a preferably circular junction. The diameter of this circular junction 21 is greater than twice the width of the rib 20. At the level of the transition between base 26 and the branches 24 and 25, the circulation duct 10 is limited by the peripheral edge 8, it presents a particular shape illustrated by two connecting zones 22 and 23 of circular and radius general shapes allowing keep a constant section. Junction 21, the disturbances and the connection zones 22 and 23 are of the partial occultation means 12. Their combinations of shapes, positioning and dimensions contribute to maintain substantially constant the passage section 11 in the part bottom of tube 1 in the shape of "U". The orientation of disruptors is arranged in such a way that their sections cumulative cross-sections are constant and therefore indirectly the passage section of the circulation duct 10, despite the particularity of this area of the "U" tube. Indeed, in this case some disrupters, for example 27 and 27a, may have an axis supporting their largest non parallel dimensions with the axis of circulation of the fluid.

La figure 7 est une représentation reprenant les références des éléments communs décrits dans les figures 4 et 5. Cette figure illustre une coupe C-C de la figure 2 effectuée sensiblement horizontalement à hauteur de la jonction 21. Le rayon de cette jonction 21, le positionnement et/ou la forme du ou des perturbateurs créent une section d'occultation qui limitera la vitesse du fluide dans cette partie du conduit de circulation 10. La section de passage 11 dans cette partie du conduit est illustrée par des hachures.FIG. 7 is a representation showing the references common elements described in Figures 4 and 5. This figure illustrates a section C-C of FIG. substantially horizontally at the junction 21. The radius of this junction 21, the positioning and / or the shape of the or disrupters create a blocking section that will limit the fluid velocity in this part of the duct circulation 10. The passage section 11 in this part of the duct is illustrated by hatching.

On a représenté à la figure 8 une section de passage 11 selon une coupe transversale D-D de la figure 2. Cette section est occultée par la combinaison des caractéristiques dimensionnelles de la jonction 21, de la zone de raccordement 22 et des perturbateurs 27, 27a et 28, 28a. Les perturbateurs 27 et 27a ont leurs extrémités en contact de manière à créer une section d'occultation maximum. Par contre, les perturbateurs 28 et 28a sont de profondeur plus faible ou de forme pyramidale, la section d'occultation est donc diminuée. La somme des sections d'occultation des perturbateurs 27, 27a, 28, 28a, jonctions 21 et zones de raccordement 22 tend à maintenir sensiblement constante la section de passage 11. Cette dernière est illustrée sur cette figure par une zone hachurée.FIG. 8 shows a passage section 11 in a cross section D-D of Figure 2. This section is obscured by the combination of characteristics dimensions of the junction 21, of the connection zone 22 and disturbers 27, 27a and 28, 28a. The disrupters 27 and 27a have their ends in contact so as to create a maximum concealment section. On the other hand, the disturbers 28 and 28a are of lower depth or pyramidal shape, the occultation section is reduced. The sum of the sections of occultation of the interferers 27, 27a, 28, 28a, junctions 21 and connection areas 22 tends to maintain substantially constant the passage section 11. The latter is illustrated in this figure by a hatched area.

La figure 9 est une variante de disposition et de forme des perturbateurs 30, 30a et 29, 29a. En effet, dans cette coupe verticale selon E-E, les perturbateurs prennent une forme circulaire particulièrement appropriée à cette partie du conduit de circulation 10. Leurs sections d'occultation ajoutées à celle de la jonction 21 concourent à empêcher la survitesse du fluide qui est à l'origine de certaines nuisances sonores des échangeurs thermiques.Figure 9 is a variant of layout and shape of disturbers 30, 30a and 29, 29a. Indeed, in this cup Vertical according to E-E, disrupters take a shape Circular particularly suitable for this part of the duct 10. Their occultation sections added to that of the junction 21 contribute to prevent the overspeed of the fluid which is at the origin of certain noise nuisances heat exchangers.

La description ci-dessus n'est en aucun cas limitée à des perturbateurs face à face avec leurs extrémités en contact. Il est bien entendu rappelé que ceux-ci peuvent ne pas être en contact, être disposés selon des axes différents ou n'être disposés que sur l'une, l'autre ou les deux plaques 4 ou 5 formant le tube 1. La combinaison des caractéristiques de positionnement et/ou de forme des éléments constituant le moyen d'occultation 12 dépend des nécessités requises en matière d'échange thermique et en matière d'abaissement des nuisances sonores. Le moyen d'occultation 12 est bien entendu applicable à un tube d'échangeur thermique ayant une forme générale de « U », mais il est aisé d'appliquer ce moyen d'occultation à des plaques en forme de « I » ou à toutes autres formes de conduit de circulation. Le tube défini ci-dessus est particulièrement adapté aux radiateurs et évaporateur d'une installation de climatisation d'un véhicule automobile.The description above is in no way limited to disruptors face to face with their ends in contact. he is of course reminded that these may not be in contact, be arranged along different axes or be arranged on one or the other or both plates 4 or 5 forming the tube 1. The combination of the characteristics of positioning and / or shape of the elements constituting the means of blackout 12 depends on the necessities required heat exchange and the reduction of pollution sound. The occultation means 12 is of course applicable to a heat exchanger tube having a generally "U" shape, but it is easy to apply this means of occultation to I-shaped plates or other forms of conduit of circulation. The tube defined above is particularly adapted to the radiators and evaporator of an installation of air conditioning of a motor vehicle.

Claims (21)

  1. Tube (1) for a heat exchanger (2) through which a fluid (3) flows, intended to promote heat exchange between an external medium (7) and said fluid, formed by at least two plates (4, 5) connected to each other in order to define a circulation duct (10), the cross section of which is a cross section (11) for passage of said fluid, said circulation duct having a fluid inlet orifice (13) and a fluid outlet orifice (14), characterized in that said tube comprises a means (12) for partially blocking the circulation duct (10) intended to keep the passage cross section (11) of said duct substantially constant between the inlet orifice (13) and the outlet orifice (14).
  2. Heat exchanger tube (1) according to Claim 1, characterized in that said tube has the general shape of a "U" comprising a base (26) connected to two arms (24, 25), said arms being separated by a rib (20), the end of which is terminated by a junction (21), the passage cross section (11) to be kept constant being any one of those which lie between the rib (20) and a peripheral edge (8) of the U-shaped tube and passing through the partial blocking means (12).
  3. Heat exchanger tube (1) according to Claim 2, characterized in that the shape of the junction (21) is circular with a diameter greater than twice the width of the rib (20).
  4. Heat exchanger tube (1) according to Claim 3, characterized in that the peripheral edge (8) has connection regions (22, 23) connecting the two arms (24, 25) at the base (26) of the U-shaped tube, said regions being of circular shape and of a radius enabling the passage cross section (11) to be kept constant.
  5. Heat exchanger tube (1) according to any one of the preceding claims, characterized in that the partial blocking means (12) is defined by the staggered positioning of flow disturbers (15, 15a, 16, 16a) each with respect to the others such that their cumulated blocking cross sections are substantially constant over the entire length of the circulation duct (10).
  6. Heat exchanger tube (1) according to any one of the preceding claims, characterized in that the passage cross section (11) is constant when the difference between a minimum passage cross section and a maximum passage cross section determined in the circulation duct (10) does not exceed 20 per cent.
  7. Heat exchanger tube (1) according to any one of the preceding claims, characterized in that the partial blocking means (12) is defined by the shape of flow disturbers (15, 15a, 16, 16a) each with respect to the others in the circulation duct.
  8. Heat exchanger tube (1) according to Claim 7, characterized in that the flow disturbers (15, 15a, 16, 16a) are placed on at least one of the plates (4) or (5).
  9. Heat exchanger tube (1) according to Claim 8, characterized in that the flow disturbers (15, 15a, 16, 16a) are placed on at least one of the plates (4) or (5) such that the direction of the axis (19) supporting their largest dimensions is substantially parallel to the circulation direction of the fluid.
  10. Heat exchanger tube (1) according to any one of Claims 5 to 9, characterized in that the flow disturbers are present on both plates (4, 5).
  11. Heat exchanger tube (1) according to Claim 10, characterized in that at least one flow disturber (15) of one of the plates is placed facing at least one flow disturber (15a) of the other plate.
  12. Heat exchanger tube (1) according to Claim 11, characterized in that the flow disturbers (15, 15a) of each plate are placed facing each other, the directions of their axes (18, 19) supporting their largest dimensions being substantially parallel to each other.
  13. Heat exchanger tube (1) according to one of Claims 10 to 12, characterized in that the plates (4, 5) are securely attached by the flow disturbers (15, 15a, 16, 16a).
  14. Heat exchanger tube (1) according to any one of Claims 5 to 13, characterized in that the flow disturbers (15, 15a, 16, 16a) have an oval shape.
  15. Heat exchanger tube (1) according to Claim 14, characterized in that the flow disturbers (15, 15a, 16, 16a) have a substantially circular shape.
  16. Heat exchanger tube (1) according to Claim 14, characterized in that the flow disturbers (15, 15a, 16, 16a) are diamond-shaped.
  17. Heat exchanger tube (1) according to Claim 16, characterized in that the flow disturbers (15, 15a, 16, 16a) have the shape of a diamond with rounded angles.
  18. Heat exchanger tube (1) according to any one of Claims 5 to 17, characterized in that the flow disturbers (15, 15a, 16, 16a) have a pyramid shape, the base of the pyramid shape being common with one of the plates (4, 5).
  19. Heat exchanger characterized in that it comprises at least one tube (1) defined according to any one of the preceding claims.
  20. Heat exchanger according to Claim 19, characterized in that it is a radiator.
  21. Heat exchanger according to Claim 20, characterized in that it is an evaporator.
EP02021612A 2001-10-31 2002-09-27 Tube for plate-like heat exchanger Expired - Lifetime EP1308687B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0114185A FR2831654B1 (en) 2001-10-31 2001-10-31 THERMAL EXCHANGER TUBES WITH OPTIMIZED PLATES
FR0114185 2001-10-31

Publications (2)

Publication Number Publication Date
EP1308687A1 EP1308687A1 (en) 2003-05-07
EP1308687B1 true EP1308687B1 (en) 2005-12-28

Family

ID=8869000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02021612A Expired - Lifetime EP1308687B1 (en) 2001-10-31 2002-09-27 Tube for plate-like heat exchanger

Country Status (6)

Country Link
US (1) US6786276B2 (en)
EP (1) EP1308687B1 (en)
JP (1) JP2003185374A (en)
AT (1) ATE314618T1 (en)
DE (1) DE60208307T2 (en)
FR (1) FR2831654B1 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100950714B1 (en) * 2003-05-29 2010-03-31 한라공조주식회사 Plate for heat exchanger
JP2006125767A (en) * 2004-10-29 2006-05-18 Tokyo Institute Of Technology Heat exchanger
US20070144711A1 (en) * 2004-11-19 2007-06-28 Eco Lean Research & Development A/S Heat exchanger plate and plate heat exchanger comprising such plates
HUP0700775A2 (en) * 2005-05-24 2008-09-29 Dana Canada Corp Heat exchanger
DE102006019024A1 (en) * 2006-04-25 2007-10-31 Modine Manufacturing Co., Racine Heat exchangers for motor vehicles
US7703505B2 (en) * 2006-11-24 2010-04-27 Dana Canada Corporation Multifluid two-dimensional heat exchanger
US20090239463A1 (en) * 2008-03-20 2009-09-24 Lakhi Goenka Diffuser for a heating, ventilating, and air conditioning system
WO2012110852A1 (en) * 2011-02-14 2012-08-23 Bisson Massimiliano Radiant tubolar element for industrial plants and similar
DE112012003237T5 (en) * 2011-08-05 2014-06-05 Dana Canada Corp. Side inlet connection part for heat exchangers
US8869398B2 (en) 2011-09-08 2014-10-28 Thermo-Pur Technologies, LLC System and method for manufacturing a heat exchanger
DE102013216523A1 (en) 2013-08-21 2015-02-26 Behr Gmbh & Co. Kg Plate heat exchangers
KR101586646B1 (en) * 2014-03-17 2016-01-19 주식회사 경동나비엔 A hot water heating latent heat exchanger and a condensing gas boiler comprising the same
EP3647706B1 (en) * 2018-11-02 2024-06-26 HS Marston Aerospace Limited Laminated heat exchangers

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS625096A (en) * 1985-06-28 1987-01-12 Nippon Denso Co Ltd Lamination type heat exchanger
JPH01244282A (en) * 1988-03-25 1989-09-28 Nippon Denso Co Ltd Laminate-type heat exchanger
AU604361B2 (en) * 1988-08-09 1990-12-13 Nippondenso Co. Ltd. Plate type heat exchanger
JP2737987B2 (en) * 1989-03-09 1998-04-08 アイシン精機株式会社 Stacked evaporator
US5137082A (en) * 1989-10-31 1992-08-11 Nippondenso Co., Ltd. Plate-type refrigerant evaporator
US5409056A (en) * 1992-05-11 1995-04-25 General Motors Corporation U-flow tubing for evaporators with bump arrangement for optimized forced convection heat exchange
JPH0666487A (en) * 1992-08-13 1994-03-08 Showa Alum Corp Laminated type heat exchanger
CN1109232C (en) * 1993-12-28 2003-05-21 昭和电工株式会社 Plate heat exchanger
JP3085137B2 (en) * 1995-04-21 2000-09-04 株式会社デンソー Stacked heat exchanger
JPH08291989A (en) * 1995-04-21 1996-11-05 Nippondenso Co Ltd Laminate type heat exchanger
JP3719453B2 (en) * 1995-12-20 2005-11-24 株式会社デンソー Refrigerant evaporator
AU708247B2 (en) * 1996-03-30 1999-07-29 Chart Marston Limited Plate-type heat exchanger with distribution zone
JP3747780B2 (en) * 1998-09-16 2006-02-22 株式会社日立製作所 Heat exchanger
JP2000146477A (en) * 1998-11-17 2000-05-26 Calsonic Corp Laminated heat exchanger
US6318455B1 (en) * 1999-07-14 2001-11-20 Mitsubishi Heavy Industries, Ltd. Heat exchanger

Also Published As

Publication number Publication date
DE60208307T2 (en) 2006-08-17
ATE314618T1 (en) 2006-01-15
DE60208307D1 (en) 2006-02-02
US6786276B2 (en) 2004-09-07
FR2831654B1 (en) 2004-02-13
US20030079871A1 (en) 2003-05-01
JP2003185374A (en) 2003-07-03
FR2831654A1 (en) 2003-05-02
EP1308687A1 (en) 2003-05-07

Similar Documents

Publication Publication Date Title
EP1308687B1 (en) Tube for plate-like heat exchanger
CA2747353C (en) Heat exchanger comprising tubes with grooved fins
FR2549591A1 (en) SET OF WING TUBES
FR2944590A1 (en) HEAT EXCHANGER WITH MICROCANALS
FR3007514A1 (en) PHASE CHANGE MATERIAL TANK TUBE FOR HEAT EXCHANGE BEAM, ESPECIALLY FOR A EVAPORATOR OF A VEHICLE AIR CONDITIONING CIRCUIT
EP2810009B1 (en) Cooling radiator for a vehicle, particularly a motor vehicle
EP2105693B1 (en) Heat exchanger with high cooling power
WO2005100901A1 (en) Heat exchanger tubes that promote the drainage of condensates
EP2097704A1 (en) Internal heat exchanger for cooling fluid circuit
EP0117829A1 (en) Tubular heat exchanger
EP3645184A1 (en) Tube for a heat exchanger having disturbance device
FR3073612B1 (en) HEAT EXCHANGER TUBE WITH PERTURBATION DEVICE
EP3794299A1 (en) Heat exchanger for a motor vehicle
FR3073611B1 (en) HEAT EXCHANGER TUBE WITH VARIABLE GEOMETRY DISTURB DEVICE
WO2020234056A1 (en) Plate of a heat exchanger for a vehicle
FR2924491A1 (en) WIRELESS INTERCALIARY WITH PERSIANS FOR HEAT EXCHANGER
FR2866948A1 (en) Heat exchanger e.g. heat radiator, for motor vehicle, has deviation plates of length selected such that their ends define deflector contour with convex portion complementary to concave portion of circumference of each hole of cooling fins
FR2973492A1 (en) COLLECTOR BOX FOR A HEAT EXCHANGER, IN PARTICULAR FOR A MOTOR VEHICLE, AND THERMAL EXCHANGER THEREFOR
FR3092906A1 (en) Heat exchanger
FR2980739A1 (en) COOLING RADIATOR TUBE FOR A MOTOR VEHICLE AND COOLING RADIATOR FOR A MOTOR VEHICLE COMPRISING SUCH A TUBE.
WO2023001791A1 (en) Advanced disturbance elements for improving the performance of low-temperature radiator tubes
FR3066811A1 (en) WING FOR HEAT EXCHANGER WITH INCLINED ATTACK STRIP
WO2023099315A1 (en) Advanced disturbance elements for improving pipe performance
WO2021116577A1 (en) Heat exchanger, and process for manufacturing such an exchanger
FR2989766A1 (en) Heat exchange beam for radiator for cooling engine of car, has heat exchange inserts connected to tubes, where each tube includes channel with corrugations to enhance capacity of tube to withstand internal pressure in transition zone

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20031107

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: GB

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051228

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REF Corresponds to:

Ref document number: 60208307

Country of ref document: DE

Date of ref document: 20060202

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060328

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060328

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060328

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060328

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060408

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20060529

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 20051228

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060930

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060930

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060930

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060930

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20060929

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

BERE Be: lapsed

Owner name: VALEO CLIMATISATION

Effective date: 20060930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20060927

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20051228

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20200930

Year of fee payment: 19

Ref country code: DE

Payment date: 20200910

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 60208307

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210930

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220401