WO2001027540A1 - Device for creating a microclimate around a person - Google Patents

Device for creating a microclimate around a person Download PDF

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Publication number
WO2001027540A1
WO2001027540A1 PCT/FR2000/002810 FR0002810W WO0127540A1 WO 2001027540 A1 WO2001027540 A1 WO 2001027540A1 FR 0002810 W FR0002810 W FR 0002810W WO 0127540 A1 WO0127540 A1 WO 0127540A1
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WO
WIPO (PCT)
Prior art keywords
fluid
level
flanges
circulating
module
Prior art date
Application number
PCT/FR2000/002810
Other languages
French (fr)
Inventor
François Penot
Philippe Meyer
Original Assignee
Centre National De La Recherche Scientifique (C.N.R.S.)
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 Centre National De La Recherche Scientifique (C.N.R.S.) filed Critical Centre National De La Recherche Scientifique (C.N.R.S.)
Priority to CA002387381A priority Critical patent/CA2387381A1/en
Priority to AU77969/00A priority patent/AU7796900A/en
Priority to EP00967992A priority patent/EP1221011A1/en
Publication of WO2001027540A1 publication Critical patent/WO2001027540A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • F24F2013/247—Active noise-suppression

Definitions

  • the present invention relates to an air conditioning device making it possible to create a volume of air, around a given object, and under conditions of temperature and / or humidity different from the medium surrounding the object, without having to confine the latter by walls.
  • It relates more particularly to a device capable of generating a micro-climate around an object or an individual, without having to ensure partitioning around the object or the individual, while providing a reduced optimal volume subjected to air conditioning, with the lowest possible fluid circulation speeds.
  • Known air conditioning devices are generally of two types:
  • a first family includes air conditioning of the entire volume to be treated; - a second family implements punctual air conditioning, essentially by impact of jets, particularly implemented in the automotive sector.
  • the first family requires significant installations in terms of space and installed power, due to the volume of the enclosure to be air conditioned
  • the second family whose absorbed power can be considered to be significant compared to that of the vehicle, for example, for which the air conditioning is to be ensured, often generates an air current whose circulation speed causes an unpleasant sensation in the user.
  • the present invention therefore aims to overcome the drawbacks of the solutions known from the prior art by proposing an air conditioning device making it possible to create a micro-climate around an object or an individual, without having to insure around the object. or individual partitioning, while providing an optimal reduced volume subjected to air conditioning, with the lowest possible fluid circulation speeds.
  • the device making it possible to generate a micro-climate around an object or an individual, without having to ensure a partitioning around the object or the individual according to the invention, is characterized in that '' it comprises at least one aeraulic module, formed: - on the one hand of at least two annular flanges, flat or curved, superimposed and delimiting between them a space having openings in the periphery at the level of the outer crown and in the center of this same ring, on the other hand, at least one means for circulating a fluid capable of generating a flow having an axial component at the inlet and a flow having tangential and radial components at the outlet, said aeraulic module then generating, at the outlet, a curtain of annular fluid in closed loop, within which said object or said individual can be located.
  • FIG. 1 is a schematic view of the device object of the invention
  • Figure 2 is a sectional view, in front elevation, of the device object of the invention
  • - Figure 3 is a detail view of an exchanger fitted to the device object of the invention.
  • the device which is the subject of the invention, it comprises at least one aeraulic module 1 formed:
  • a fluid for example air
  • the flanges 2, 3 are produced in particular by stamping in a metallic or non-metallic material having excellent thermal conduction properties (for example copper, aluminum, etc.) in order to allow the transmission of a heat flux originating from an element 8 for producing calories and / or frigories attached to or in relation by a thermal bridge, to at least one of the faces 9 of one of the flanges 2, 3.
  • a metallic or non-metallic material having excellent thermal conduction properties (for example copper, aluminum, etc.) in order to allow the transmission of a heat flux originating from an element 8 for producing calories and / or frigories attached to or in relation by a thermal bridge, to at least one of the faces 9 of one of the flanges 2, 3.
  • the latter is produced from at least one centrifugal fan with axial suction and radial discharge.
  • the latter is positioned between the two flanges 2, 3, the suction occurring at the through the central opening 5 made at one of the flanges, the discharge being effected by the rotation of the fluid by the centrifugal fan at the level of the space 4 between the flanges, with proportional tangential speeds the speed of rotation of the fan rotor and its radius.
  • the means 7 for circulating the fluid is not positioned in the inter-flange space, but in a column or pipe bringing or removing the fluid under circulation conditions, in terms for example speed, profile, similar to the first embodiment.
  • an exemplary embodiment of this heat exchanger 8 may consist of a plurality of fins 10 each having a large exchange surface, these fins being made of a material whose thermal conduction properties are also important, these fins can by example be developed in the form of needles (see Figure 3).
  • the deflection device 11 which makes it possible to obtain optimal operating conditions for the module must be oriented relative to the horizontal according to a value between 30 and 55 ° and preferably close to 45 °.
  • the circulation of the fluid takes place largely in closed loop.
  • the fluid is ejected over the entire periphery of the inter-flange space 4 with an inclination relative to the vertical thanks to the presence of the deflection device 11, the confinement effect of the curtain requires, in order to conserve the mass of fluid, the annular jet to bend, this bending is influenced by the slight depression prevailing at the suction 5, the fluid is then sucked by the means 7 of circulation; it is thus possible to cover an area of a height practically equal to the radius of the curtain of annular fluid.
  • a characteristic dimension in this case the diameter
  • the speed of the annular jet is in particular between 1 and 3 m / s and substantially close to 2 m / s in order to obtain a preferentially equal distribution, both at the level of the vertical component and of the radial component, in order to develop an optimal orientation of the speed vector at the output of the deflection device 11; in this configuration, the speed of the fluid at the level of the suction mouth is substantially close to 1.5 m / s.
  • the characteristic dimension of the deflection device 11 or of the blowing nozzle is between 1 and 5 cm and preferably between 2 and 4 cm.
  • This device comprises means 13 making it possible to ensure a mass transfer and / or a heat transfer at the level of the fluid, these means acting at the level of a modification in particular of the density of the fluid, thus being able to vary its rate of 'relative humidity.
  • the latter comprises, at the level of the suction 5, or more generally at the level of the aeraulic circuit, a filtration system comprising either passive filters for retaining the dust transported by the fluid, either filters active ingredients (for example activated carbon) to reduce odors.
  • a filtration system comprising either passive filters for retaining the dust transported by the fluid, either filters active ingredients (for example activated carbon) to reduce odors.
  • an anti-noise means 14 essentially consisting of electronic devices making it possible to analyze the environment and / or the ambient or surrounding noise of the subject or object for which the air conditioning is to be ensured, then, following this analysis, to generate a counter-noise whose characteristics cancel out the effects of ambient noise, so as finally to restore an overall atmosphere whose sound intensity is significantly reduced, or even canceled.
  • the invention as described above offers multiple advantages because it makes it possible, from at least one aeraulic module of very reduced dimensions, to generate a fluid confinement in closed loop, for air conditioning purposes around 'an object or a subject, while not requiring an installed power compatible with installations or environments for domestic use.
  • an installed power of 100 W is sufficient to maintain the environment close to the subject or object at a temperature of the order of 10 ° C lower than the distant environment.
  • the fields of application targeted by the invention can be very varied. They concern in particular: - air conditioning in the automotive industry,
  • the annular jet blows upwards, the central aspiration being effected by means of a more or less high central column, adapted to the size of the foodstuffs stored and positioned on a circular plate cooperating with the level of said column.
  • the annular jet ventilates the food as in a traditional refrigeration cabinet.
  • the fluid in circulation in a closed loop is recovered at the level of the central part to be cooled there at the level of an exchanger placed in a nonlimiting manner at the level of the circular plate, the size of the device being on the scale of that of the product to protect.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

A device which is used to create a microclimate around an object or a person without the need for placing a partition around said object or person. The inventive device is characterized in that it comprises at least one aeraulic module (1) formed by a) at least two annular cheeks (2, 3) which are flat or incurved, superimposed and which define a space therebetween (4) with peripheral openings (5, 6) at the outer crown and b) at least one means (7) for circulating a liquid which can generate a flow having an axial component at the input thereof and tangential and radial components at the output thereof, whereby said aeraulic module (1) subsequently generates an annular closed-loop liquid curtain at the output thereof and the person or object can be situated in the midst thereof.

Description

DISPOSITIF CREANT UN MICRO-CLIMAT AUTOUR D'UN INDIVIDU DEVICE CREATING A MICRO-CLIMATE AROUND AN INDIVIDUAL
La présente invention est relative à un dispositif de climatisation permettant de créer un volume d'air, autour d'un objet donné, et sous des conditions de température et/ou d'humidité différentes du milieu environnant l'objet, sans avoir à confiner ce dernier par des parois.The present invention relates to an air conditioning device making it possible to create a volume of air, around a given object, and under conditions of temperature and / or humidity different from the medium surrounding the object, without having to confine the latter by walls.
Elle vise plus particulièrement un dispositif apte à générer un micro-climat autour d'un objet ou d'un individu, sans avoir à assurer un cloisonnement autour de l'objet ou de l'individu, tout en fournissant un volume optimal réduit soumis à la climatisation, avec des vitesses de circulation du fluide les plus petites possibles.It relates more particularly to a device capable of generating a micro-climate around an object or an individual, without having to ensure partitioning around the object or the individual, while providing a reduced optimal volume subjected to air conditioning, with the lowest possible fluid circulation speeds.
Les dispositifs de climatisation connus sont généralement de deux types :Known air conditioning devices are generally of two types:
- une première famille comporte la climatisation de 1 ' ensemble du volume à traiter ; - une seconde famille met en oeuvre une climatisation ponctuelle, essentiellement par impacts de jets, particulièrement mise en oeuvre dans le secteur automobile.- A first family includes air conditioning of the entire volume to be treated; - a second family implements punctual air conditioning, essentially by impact of jets, particularly implemented in the automotive sector.
Ces diverses familles comportent des inconvénients majeurs qui les rendent incompatibles avec les exigences recherchées. Ainsi, la première famille nécessite des installations importantes en termes d'encombrement et de puissance installée, en raison du volume de l'enceinte à climatiser, la seconde famille, dont la puissance absorbée peut être considérée comme non négligeable rapportée à celle par exemple du véhicule dont on veut assurer le conditionnement d'air, génère souvent un courant d'air dont la vitesse de circulation provoque chez l'utilisateur une sensation désagréable.These various families have major drawbacks which make them incompatible with the requirements sought. Thus, the first family requires significant installations in terms of space and installed power, due to the volume of the enclosure to be air conditioned, the second family, whose absorbed power can be considered to be significant compared to that of the vehicle, for example, for which the air conditioning is to be ensured, often generates an air current whose circulation speed causes an unpleasant sensation in the user.
La présente invention vise donc à pallier les inconvénients des solutions connues de l'art antérieur en proposant un dispositif de climatisation permettant de créer un micro-climat autour d'un objet ou d'un individu, sans avoir à assurer autour de l'objet ou de l'individu un cloisonnement, tout en fournissant un volume optimal réduit soumis à la climatisation, avec des vitesses de circulation du fluide les plus petites possibles.The present invention therefore aims to overcome the drawbacks of the solutions known from the prior art by proposing an air conditioning device making it possible to create a micro-climate around an object or an individual, without having to insure around the object. or individual partitioning, while providing an optimal reduced volume subjected to air conditioning, with the lowest possible fluid circulation speeds.
A cet effet, le dispositif permettant de générer un micro-climat autour d'un objet ou d'un individu, sans avoir à assurer un cloisonnement autour de l'objet ou de l'individu selon l'invention, se caractérise en ce qu'il comporte au moins un module aeraulique, formé : - d'une part d'au moins deux flasques annulaires, plans ou incurvés, superposés et délimitant entre eux un espace présentant des ouvertures en périphérie au niveau de la couronne extérieure et au centre de cette même couronne, d'autre part, au moins un moyen de mise en circulation d'un fluide apte à générer un flux ayant une composante axiale en entrée et un flux ayant des composantes tangentielles et radiales en sortie, ledit module aeraulique générant ensuite, en sortie, un rideau de fluide annulaire en boucle fermée, au sein duquel peut être situé ledit objet ou ledit individu.To this end, the device making it possible to generate a micro-climate around an object or an individual, without having to ensure a partitioning around the object or the individual according to the invention, is characterized in that '' it comprises at least one aeraulic module, formed: - on the one hand of at least two annular flanges, flat or curved, superimposed and delimiting between them a space having openings in the periphery at the level of the outer crown and in the center of this same ring, on the other hand, at least one means for circulating a fluid capable of generating a flow having an axial component at the inlet and a flow having tangential and radial components at the outlet, said aeraulic module then generating, at the outlet, a curtain of annular fluid in closed loop, within which said object or said individual can be located.
D'autres caractéristiques et avantages de la présente invention ressortiront de la description faite ci-après, en référence aux dessins annexés qui en illustrent un exemple de réalisation dépourvu de tout caractère limitatif. Sur les figures : - la figure 1 est une vue schématique du dispositif objet de l'invention ; la figure 2 est une vue en coupe, en élévation frontale, du dispositif objet de l'invention ; - la figure 3 est une vue de détail d'un échangeur équipant le dispositif objet de l'invention.Other characteristics and advantages of the present invention will emerge from the description given below, with reference to the appended drawings which illustrate an embodiment thereof devoid of any limiting character. In the figures: - Figure 1 is a schematic view of the device object of the invention; Figure 2 is a sectional view, in front elevation, of the device object of the invention; - Figure 3 is a detail view of an exchanger fitted to the device object of the invention.
Selon un mode préféré de réalisation du dispositif objet de l'invention, celui-ci comporte au moins un module 1 aeraulique formé :According to a preferred embodiment of the device which is the subject of the invention, it comprises at least one aeraulic module 1 formed:
- d'une part d'au moins deux flasques 2, 3 annulaires, plans ou incurvés, superposés et délimitant entre eux un espace 4 présentant des ouvertures 5, 6 en périphérie au niveau de la couronne extérieure 6 et au centre 5 de cette même couronne, d'autre part, au moins un moyen 7 de mise en circulation d'un fluide (par exemple de l'air) apte à générer un flux ayant une composante axiale en entrée et un flux ayant des composantes tangentielles et radiales en sortie.- On the one hand at least two flanges 2, 3 annular, flat or curved, superimposed and delimiting between them a space 4 having openings 5, 6 at the periphery at the level of the outer ring 6 and at the center 5 of the same crown, on the other hand, at least one means 7 for circulating a fluid (for example air) capable of generating a flow having an axial component at the inlet and a flow having tangential and radial components at the outlet .
Préférentiellement les flasques 2, 3 sont réalisés notamment par emboutissage dans un matériau métallique ou non métallique présentant d'excellentes propriétés de conduction thermique (par exemple en cuivre, en aluminium..) afin de permettre la transmission d'un flux thermique provenant d'un organe de production 8 de calories et/ou de frigories accolé ou en relation grâce à un pont thermique, à l'une au moins des faces 9 de l'un des flasques 2, 3.Preferably the flanges 2, 3 are produced in particular by stamping in a metallic or non-metallic material having excellent thermal conduction properties (for example copper, aluminum, etc.) in order to allow the transmission of a heat flux originating from an element 8 for producing calories and / or frigories attached to or in relation by a thermal bridge, to at least one of the faces 9 of one of the flanges 2, 3.
Ainsi, selon un premier mode de réalisation du moyen 7 de mise en circulation de l'air, celui-ci est réalisé à partir d'au moins un ventilateur centrifuge à aspiration axiale et à refoulement radial. Ce dernier est positionné entre les deux flasques 2, 3, l'aspiration se produisant au travers de 1 ' ouverture centrale 5 pratiquée au niveau de l'un des flasques, le refoulement s 'effectuant grâce à la mise en rotation du fluide par le ventilateur centrifuge au niveau de l'espace 4 inter-flasques , avec des vitesses tangentielles proportionnelles à la vitesse de rotation du rotor du ventilateur et à son rayon.Thus, according to a first embodiment of the means 7 for circulating the air, the latter is produced from at least one centrifugal fan with axial suction and radial discharge. The latter is positioned between the two flanges 2, 3, the suction occurring at the through the central opening 5 made at one of the flanges, the discharge being effected by the rotation of the fluid by the centrifugal fan at the level of the space 4 between the flanges, with proportional tangential speeds the speed of rotation of the fan rotor and its radius.
Selon un autre mode de réalisation, le moyen 7 de mise en circulation du fluide n'est pas positionné dans l'espace inter-flasques , mais dans une colonne ou conduite amenant ou enlevant le fluide dans des conditions de circulation, en termes par exemple de vitesse, de profil, similaires au premier mode de réalisation.According to another embodiment, the means 7 for circulating the fluid is not positioned in the inter-flange space, but in a column or pipe bringing or removing the fluid under circulation conditions, in terms for example speed, profile, similar to the first embodiment.
Selon une autre caractéristique de l'invention, on prévoit de disposer au sein de l'espace 4 inter-flasques au moins un échangeur thermique 8 qui comporte des moyens d'échange qui présentent l'avantage : d'une part, de ne pas entraver le mouvement du fluide mis en rotation par le moyen de mise en circulation, - d'autre part, de posséder des coefficients d'échange convectif locaux importants, de l'ordre notamment de 650 /m"/°C.According to another characteristic of the invention, provision is made to have within the inter-flange space 4 at least one heat exchanger 8 which includes exchange means which have the advantage: on the one hand, of not impede the movement of the fluid rotated by the circulation means, - on the other hand, to have significant local convective exchange coefficients, of the order in particular of 650 / m " / ° C.
Ainsi, un exemple de réalisation de cet échangeur thermique 8 peut consister en une pluralité d'ailettes 10 présentant chacune une surface d'échange importante, ces ailettes étant réalisées dans un matériau dont les propriétés de conduction thermique sont également importantes, ces ailettes peuvent par exemple être élaborées sous la forme d'aiguilles (cf. figure 3).Thus, an exemplary embodiment of this heat exchanger 8 may consist of a plurality of fins 10 each having a large exchange surface, these fins being made of a material whose thermal conduction properties are also important, these fins can by example be developed in the form of needles (see Figure 3).
Selon encore une autre caractéristique de l'invention, on prévoit de disposer, en périphérie de l'un des flasques 2, 3 formant au moins un module 1, un dispositif de déflexion 11 ou de buse permettant d'orienter, par rapport à l'horizontale, l'angle de sortie de la composante radiale du fluide en circulation au sein de l'espace 4 interflasques .According to yet another characteristic of the invention, provision is made to have, at the periphery of one of the flanges 2, 3 forming at least one module 1, a deflection device 11 or nozzle making it possible to orient, with respect to horizontally, the exit angle of the radial component of the fluid in circulation within the interflange space 4.
Selon un mode préféré de réalisation le dispositif de déflexion 11 qui permet d'obtenir des conditions de fonctionnement optimal du module doit être orienté par rapport à l'horizontale selon une valeur comprise entre 30 et 55° et préférentiellement voisine de 45°.According to a preferred embodiment, the deflection device 11 which makes it possible to obtain optimal operating conditions for the module must be oriented relative to the horizontal according to a value between 30 and 55 ° and preferably close to 45 °.
On peut ainsi, grâce à la configuration d'un module 1 ainsi équipé du dispositif de déflexion 11 et du moyen 7 de mise en circulation d'un fluide, créer un rideau de fluide annulaire incliné par rapport à l'horizontale et qui est infléchi et ré-aspiré, en grande partie, dans la région centrale de l'anneau de soufflage (cf. figure 1).It is thus possible, by virtue of the configuration of a module 1 thus equipped with the deflection device 11 and the means 7 for circulating a fluid, to create a curtain of annular fluid inclined relative to the horizontal and which is bent and largely sucked back into the central region of the blowing ring (see Figure 1).
La circulation du fluide s'effectue en grande partie en boucle fermée. Le fluide est éjecté sur toute la périphérie de l'espace 4 inter-flasques avec une inclinaison par rapport à la verticale grâce à la présence du dispositif de déflexion 11, l'effet de confinement du rideau oblige, pour conserver la masse de fluide, le jet annulaire à s'infléchir, cet infléchissement est influencé par la légère dépression régnant à l'aspiration 5, le fluide est ensuite aspiré par le moyen 7 de mise en circulation ; on peut ainsi couvrir une zone d'une hauteur pratiquement égale au rayon du rideau de fluide annulaire. Ainsi, par exemple, pour climatiser une zone en disposant le dispositif à une hauteur H, il faut que celui-ci comporte une dimension caractéristique (en l'occurrence le diamètre) d'une valeur de 2H.The circulation of the fluid takes place largely in closed loop. The fluid is ejected over the entire periphery of the inter-flange space 4 with an inclination relative to the vertical thanks to the presence of the deflection device 11, the confinement effect of the curtain requires, in order to conserve the mass of fluid, the annular jet to bend, this bending is influenced by the slight depression prevailing at the suction 5, the fluid is then sucked by the means 7 of circulation; it is thus possible to cover an area of a height practically equal to the radius of the curtain of annular fluid. Thus, for example, to cool an area by placing the device at a height H, it must have a characteristic dimension (in this case the diameter) with a value of 2H.
De même, pour une zone d'extension horizontale L, il faut une boucle annulaire de dimension caractéristique de l'ordre de L et elle doit être placée à une hauteur inférieure ou égale à L/2.Likewise, for a horizontal extension zone L, an annular loop of dimension characteristic of the order of L and it must be placed at a height less than or equal to L / 2.
Quelles que soient les dimensions de la boucle annulaire, la vitesse du jet annulaire est comprise entre notamment 1 et 3 m/s et sensiblement voisine de 2 m/s afin d'obtenir une répartition préférentiellement égale, tant au niveau de la composante verticale que de la composante radiale, afin d'élaborer une orientation optimale du vecteur vitesse en sortie du dispositif de déflexion 11 ; dans cette configuration, la vitesse du fluide au niveau de la bouche d'aspiration est sensiblement voisine de 1,5 m/s.Whatever the dimensions of the annular loop, the speed of the annular jet is in particular between 1 and 3 m / s and substantially close to 2 m / s in order to obtain a preferentially equal distribution, both at the level of the vertical component and of the radial component, in order to develop an optimal orientation of the speed vector at the output of the deflection device 11; in this configuration, the speed of the fluid at the level of the suction mouth is substantially close to 1.5 m / s.
Par ailleurs, la dimension caractéristique du dispositif de déflexion 11 ou de la buse de soufflage est comprise entre 1 et 5 cm et préférentiellement comprise entre 2 et 4 cm.Furthermore, the characteristic dimension of the deflection device 11 or of the blowing nozzle is between 1 and 5 cm and preferably between 2 and 4 cm.
Selon une autre caractéristique de l'invention, on prévoit d'incorporer, au niveau d'au moins un module 1 et au niveau du circuit aeraulique, au moins un dispositif d'humidification 12 du fluide en circulation pouvant agir tant au niveau d'un assèchement que d'une humidification du fluide. Ce dispositif comporte des moyens 13 permettant d'assurer un transfert de masse et/ou un transfert de chaleur au niveau du fluide, ces moyens agissant au niveau d'une modification notamment de la masse volumique du fluide, pouvant ainsi faire varier son taux d'humidité relative.According to another characteristic of the invention, provision is made to incorporate, at the level of at least one module 1 and at the level of the aeraulic circuit, at least one device 12 for humidifying the circulating fluid which can act both at the level of drying out as humidification of the fluid. This device comprises means 13 making it possible to ensure a mass transfer and / or a heat transfer at the level of the fluid, these means acting at the level of a modification in particular of the density of the fluid, thus being able to vary its rate of 'relative humidity.
Selon encore une autre caractéristique de l'invention, celle-ci comporte, au niveau de l'aspiration 5, ou plus généralement au niveau du circuit aeraulique, un système de filtration comportant soit des filtres passifs pour retenir les poussières transportées par le fluide, soit des filtres actifs (par exemple du charbon actif) pour diminuer les odeurs .According to yet another characteristic of the invention, the latter comprises, at the level of the suction 5, or more generally at the level of the aeraulic circuit, a filtration system comprising either passive filters for retaining the dust transported by the fluid, either filters active ingredients (for example activated carbon) to reduce odors.
Selon encore une autre caractéristique de l'invention, celle-ci comporte, au niveau d'au moins un module 1 ou plus généralement au niveau d'un endroit quelconque balayé par le fluide en circulation assurant le conditionnement d'air au niveau d'un objet ou d'un sujet, un moyen anti-bruits 14 consistant essentiellement en des dispositifs électroniques permettant d'analyser le milieu et/ou le bruit ambiant ou environnant le sujet ou l'objet dont on veut assurer le conditionnement d'air, puis, à la suite de cette analyse, à générer un contre-bruit dont les caractéristiques annulent les effets du bruit ambiant, de manière finalement à restituer une ambiance globale dont l'intensité sonore est singulièrement réduite, voire annulée.According to yet another characteristic of the invention, it comprises, at the level of at least one module 1 or more generally at the level of any place swept by the circulating fluid ensuring the air conditioning at the level of an object or a subject, an anti-noise means 14 essentially consisting of electronic devices making it possible to analyze the environment and / or the ambient or surrounding noise of the subject or object for which the air conditioning is to be ensured, then, following this analysis, to generate a counter-noise whose characteristics cancel out the effects of ambient noise, so as finally to restore an overall atmosphere whose sound intensity is significantly reduced, or even canceled.
L'invention telle que décrite précédemment offre de multiples avantages car elle permet, à partir d'au moins un module aeraulique d'encombrement très réduit, de générer un confinement de fluide en boucle fermée, à des fins de conditionnement d'air autour d'un objet ou d'un sujet, tout en ne nécessitant une puissance installée compatible avec des installations ou des environnements à usage domestique. Ainsi, par exemple, une puissance installée de 100 W est suffisante pour maintenir l'environnement proche du sujet ou de l'objet à une température de l'ordre de 10°C inférieure à l'environnement lointain.The invention as described above offers multiple advantages because it makes it possible, from at least one aeraulic module of very reduced dimensions, to generate a fluid confinement in closed loop, for air conditioning purposes around 'an object or a subject, while not requiring an installed power compatible with installations or environments for domestic use. Thus, for example, an installed power of 100 W is sufficient to maintain the environment close to the subject or object at a temperature of the order of 10 ° C lower than the distant environment.
II demeure bien entendu que la présente invention n'est pas limitée aux exemples de réalisation décrits et représentés ci-dessus, mais qu'elle en englobe toutes les variantes .It remains to be understood that the present invention is not limited to the exemplary embodiments described and shown above, but that it encompasses all variants thereof.
Les domaines d'applications visés par l'invention peuvent être très variés. Ils concernent notamment : - la climatisation dans le domaine de l'industrie automobile,The fields of application targeted by the invention can be very varied. They concern in particular: - air conditioning in the automotive industry,
- la climatisation dans le domaine industriel ou dans des ambiances où les individus ne peuvent être réchauffés ou refroidis normalement ; il peut s'agir notamment d'opérateurs installés à poste fixe à l'extérieur ou dans des locaux de grandes dimensions (cabine de péage d'autoroute, opérateur sur machine outil, casque de séchage à cheveux... ) , - la climatisation et la purification de volumes spécifiques qui ne peuvent pas être confinés, pièces industrielles en cours de fabrication, salles blanches ou même blocs opératoires, la conservation ou la présentation culinaire en restauration ou domestique et/ou la protection des denrées dans les meubles frigorifiques de vente. Dans ce type d'application, le jet annulaire souffle vers le haut, l'aspiration centrale se faisant par l'intermédiaire d'une colonne centrale plus ou moins haute, adaptée à la dimension des denrées stockées et positionnées sur un plateau circulaire coopérant au niveau de ladite colonne. Le jet annulaire vient ventiler les denrées comme dans un meuble frigorifique de vente traditionnel. Le fluide en circulation en boucle fermée est récupéré au niveau de la partie centrale pour y être refroidi au niveau d'un échangeur placé de manière non limitative au niveau du plateau circulaire, la taille du dispositif étant à l'échelle de celle du produit à protéger. - air conditioning in the industrial field or in atmospheres where individuals cannot be heated or cooled normally; these may include operators installed at a fixed post outside or in large premises (motorway toll booth, operator on a machine tool, hair dryer helmet, etc.), - air conditioning and the purification of specific volumes which cannot be confined, industrial parts in the course of manufacture, clean rooms or even operating theaters, the conservation or the culinary presentation in catering or domestic and / or the protection of foodstuffs in refrigerated display cabinets . In this type of application, the annular jet blows upwards, the central aspiration being effected by means of a more or less high central column, adapted to the size of the foodstuffs stored and positioned on a circular plate cooperating with the level of said column. The annular jet ventilates the food as in a traditional refrigeration cabinet. The fluid in circulation in a closed loop is recovered at the level of the central part to be cooled there at the level of an exchanger placed in a nonlimiting manner at the level of the circular plate, the size of the device being on the scale of that of the product to protect.

Claims

REVENDICATIONS
1 - Dispositif permettant de générer un micro-climat autour d'un objet ou d'un individu, sans avoir à assurer un cloisonnement autour de l'objet ou de l'individu, caractérisé en ce qu'il comporte au moins un module (1) aeraulique, formé : d'une part d'au moins deux flasques (2,3) annulaires, plans ou incurvés, superposés et délimitant entre eux un espace (4) présentant des ouvertures (5, 6) en périphérie au niveau de la couronne extérieure et au centre de cette même couronne,1 - Device for generating a micro-climate around an object or an individual, without having to provide partitioning around the object or the individual, characterized in that it comprises at least one module ( 1) aeraulic, formed: on the one hand at least two annular flanges (2,3), flat or curved, superimposed and delimiting between them a space (4) having openings (5, 6) at the periphery at the outer crown and in the center of this same crown,
- d'autre part, au moins un moyen (7) de mise en circulation d'un fluide apte à générer un flux ayant une composante axiale en entrée et un flux ayant des composantes tangentielles et radiales en sortie ledit module (1) aeraulique générant ensuite, en sortie, un rideau de fluide annulaire en boucle fermée, au sein duquel peut être situé ledit objet ou ledit individu.- on the other hand, at least one means (7) for circulating a fluid capable of generating a flow having an axial component at the inlet and a flow having tangential and radial components at the outlet said aeraulic module (1) generating then, at the outlet, a curtain of annular fluid in closed loop, within which said object or said individual can be located.
2 - Dispositif selon la revendication 1, caractérisé en ce que les flasques (2, 3) sont réalisés notamment par emboutissage dans un matériau présentant d'excellentes propriétés de conduction thermique afin de permettre la transmission d'un flux thermique provenant d'un organe de production (8) de calories et/ou de frigories accolé ou en relation grâce à un pont thermique, à l'une au moins des faces de l'un des flasques (2, 3) .2 - Device according to claim 1, characterized in that the flanges (2, 3) are produced in particular by stamping in a material having excellent thermal conduction properties in order to allow the transmission of a heat flux from an organ production (8) of calories and / or frigories joined or related by a thermal bridge, to at least one of the faces of one of the flanges (2, 3).
3 - Dispositif selon la revendication 1, caractérisé en ce que le moyen (7) de mise en circulation du fluide est réalisé à partir d'au moins un ventilateur centrifuge à aspiration axiale et à refoulement radial, l'aspiration se produisant au travers de l'ouverture centrale (5) pratiquée au niveau de l'un des flasques (2, 3), le refoulement s 'effectuant grâce à la mise en rotation du fluide par le ventilateur centrifuge au niveau de l'espace (4) interflasques, avec des vitesses tangentielles proportionnelles à la vitesse de rotation du rotor du ventilateur et à son rayon .3 - Device according to claim 1, characterized in that the means (7) for circulating the fluid is produced from at least one centrifugal fan with axial suction and radial delivery, the suction occurring through the central opening (5) made at one of the flanges (2, 3), the discharge being effected by the rotation of the fluid by the centrifugal fan at the level of the interflange space (4), with tangential speeds proportional to the speed of rotation of the fan rotor and its radius.
4 - Dispositif selon la revendication 1, caractérisé en ce que le moyen (7) de mise en circulation du fluide est positionné dans l'espace (4) inter-flasques .4 - Device according to claim 1, characterized in that the means (7) for circulating the fluid is positioned in the space (4) inter-flanges.
5 - Dispositif selon la revendication 1, caractérisé en ce que le moyen (7) de mise en circulation du fluide est positionné dans une colonne ou conduite amenant ou enlevant le fluide.5 - Device according to claim 1, characterized in that the means (7) for circulating the fluid is positioned in a column or pipe bringing or removing the fluid.
6 - Dispositif selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'on prévoit de disposer au sein de l'espace (4) inter-flasques au moins un échangeur thermique (8) qui comporte des moyens d'échange calorifique.6 - Device according to any one of claims 1 to 5, characterized in that provision is made to have within the space (4) inter-flanges at least one heat exchanger (8) which comprises exchange means heat.
7 - Dispositif selon la revendication 6, caractérisé en ce que 1 ' échangeur thermique (8) consiste en une pluralité d'ailettes (10) présentant chacune une surface d'échange importante, ces ailettes étant réalisées dans un matériau dont les propriétés de conduction thermique sont importantes, ces ailettes (10) peuvent être élaborées sous la forme d'aiguilles.7 - Device according to claim 6, characterized in that one heat exchanger (8) consists of a plurality of fins (10) each having a large exchange surface, these fins being made of a material whose conduction properties thermal are important, these fins (10) can be developed in the form of needles.
8 - Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'on prévoit de disposer, en périphérie de l'un des flasques (2, 3) formant au moins un module (1) , un dispositif de déflexion (11) ou de buse permettant d'orienter, par rapport à l'horizontale, l'angle de sortie de la composante radiale du fluide en circulation au sein de l'espace (4) interflasques . 9 - Dispositif selon la revendication 8, caractérisé en ce que le dispositif de déflexion (11) est orienté par rapport à l'horizontale selon une valeur comprise entre 30 et 55° et préférentiellement voisine de 45°.8 - Device according to any one of the preceding claims, characterized in that provision is made to have, at the periphery of one of the flanges (2, 3) forming at least one module (1), a deflection device (11 ) or nozzle making it possible to orient, with respect to the horizontal, the exit angle of the radial component of the fluid in circulation within the interflange space (4). 9 - Device according to claim 8, characterized in that the deflection device (11) is oriented relative to the horizontal according to a value between 30 and 55 ° and preferably close to 45 °.
10 - Dispositif selon la revendication 8, caractérisé en ce que la dimension caractéristique du dispositif de déflexion (11) ou de la buse de soufflage est comprise entre 1 et 5 cm et préférentiellement comprise entre 2 et 4 cm.10 - Device according to claim 8, characterized in that the characteristic dimension of the deflection device (11) or of the blowing nozzle is between 1 and 5 cm and preferably between 2 and 4 cm.
11 - Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'on prévoit d'incorporer, au niveau d'au moins un module (1) et au niveau du circuit aeraulique, au moins un dispositif d'humidification (12) du fluide en circulation pouvant agir tant au niveau d'un assèchement que d'une humidification du fluide.11 - Device according to any one of the preceding claims, characterized in that provision is made to incorporate, at the level of at least one module (1) and at the level of the aeraulic circuit, at least one humidification device (12 ) of the circulating fluid which can act both at the level of a drying out and a humidification of the fluid.
12 - Dispositif selon la revendication 11, caractérisé en ce que le dispositif d'humidification (12) comporte des moyens (13) permettant d'assurer un transfert de masse et/ou un transfert de chaleur au niveau du fluide, ces moyens agissant au niveau d'une modification notamment de la masse volumique du fluide, pouvant ainsi faire varier son taux d'humidité relative.12 - Device according to claim 11, characterized in that the humidification device (12) comprises means (13) for ensuring mass transfer and / or heat transfer at the fluid level, these means acting at level of a modification in particular of the density of the fluid, thus being able to vary its relative humidity rate.
13 - Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte, au niveau d'au moins un module (1) ou plus généralement au niveau d'un endroit quelconque balayé par le fluide en circulation assurant le conditionnement d'air au niveau d'un objet ou d'un sujet, un moyen anti-bruits (14) consistant essentiellement en des dispositifs électroniques permettant d'analyser le milieu et/ou le bruit ambiant ou environnant le sujet ou l'objet et de générer un contre-bruit dont les caractéristiques annulent les effets du bruit ambiant, de manière finalement à restituer une ambiance globale dont l'intensité sonore est singulièrement réduite, voire annulée.13 - Device according to any one of the preceding claims, characterized in that it comprises, at the level of at least one module (1) or more generally at the level of any place swept by the circulating fluid ensuring the conditioning air at an object or subject, an anti-noise means (14) consisting essentially of electronic devices making it possible to analyze the medium and / or the ambient or surrounding noise of the subject or object and of generate a counter-noise whose characteristics cancel out the effects of ambient noise, so as finally to restore an overall atmosphere whose sound intensity is significantly reduced, or even canceled.
14 - Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte au niveau de l'aspiration (5), ou plus généralement au niveau du circuit aeraulique, un système de filtration comportant soit des filtres passifs pour retenir les poussières transportées par le fluide, soit des filtres actifs pour diminuer les odeurs. 14 - Device according to any one of the preceding claims, characterized in that it comprises at the suction level (5), or more generally at the aeraulic circuit, a filtration system comprising either passive filters for retaining the dust transported by the fluid, i.e. active filters to reduce odors.
PCT/FR2000/002810 1999-10-12 2000-10-10 Device for creating a microclimate around a person WO2001027540A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002387381A CA2387381A1 (en) 1999-10-12 2000-10-10 Device for creating a microclimate around a person
AU77969/00A AU7796900A (en) 1999-10-12 2000-10-10 Device for creating a microclimate around a person
EP00967992A EP1221011A1 (en) 1999-10-12 2000-10-10 Device for creating a microclimate around a person

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR99/12712 1999-10-12
FR9912712A FR2799534B1 (en) 1999-10-12 1999-10-12 DEVICE FOR GENERATING, WITHOUT PARTITIONING, A MICRO-CLIMATE AROUND AN OBJECT OR AN INDIVIDUAL

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WO2001027540A1 true WO2001027540A1 (en) 2001-04-19

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EP (1) EP1221011A1 (en)
AU (1) AU7796900A (en)
CA (1) CA2387381A1 (en)
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WO (1) WO2001027540A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3133429B1 (en) 2022-03-10 2024-03-29 Electricite De France Air diffuser capable of generating a comfort bubble

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2106836A5 (en) * 1970-09-25 1972-05-05 Bertin & Cie
GB2029567A (en) * 1978-08-28 1980-03-19 Kling M Fume exhauster device
EP0511576A2 (en) * 1991-04-30 1992-11-04 Mitsubishi Jukogyo Kabushiki Kaisha Fluid suction nozzle and fluid-treating apparatus
US5530766A (en) * 1994-02-19 1996-06-25 Samsung Electronics Co., Ltd. Noise reducing apparatus of a cyclo-fan
US5830058A (en) * 1993-12-06 1998-11-03 AET Arbeidsmilj.o slashed. og Energiteknikk A/S Arrangement relating to a ventilation installation mounted to a ceiling

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2106836A5 (en) * 1970-09-25 1972-05-05 Bertin & Cie
GB2029567A (en) * 1978-08-28 1980-03-19 Kling M Fume exhauster device
EP0511576A2 (en) * 1991-04-30 1992-11-04 Mitsubishi Jukogyo Kabushiki Kaisha Fluid suction nozzle and fluid-treating apparatus
US5830058A (en) * 1993-12-06 1998-11-03 AET Arbeidsmilj.o slashed. og Energiteknikk A/S Arrangement relating to a ventilation installation mounted to a ceiling
US5530766A (en) * 1994-02-19 1996-06-25 Samsung Electronics Co., Ltd. Noise reducing apparatus of a cyclo-fan

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AU7796900A (en) 2001-04-23
CA2387381A1 (en) 2001-04-19
EP1221011A1 (en) 2002-07-10
FR2799534B1 (en) 2002-01-04
FR2799534A1 (en) 2001-04-13

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