EP2195581B1 - System for the diffusion of air in a chamber - Google Patents
System for the diffusion of air in a chamber Download PDFInfo
- Publication number
- EP2195581B1 EP2195581B1 EP08805789.8A EP08805789A EP2195581B1 EP 2195581 B1 EP2195581 B1 EP 2195581B1 EP 08805789 A EP08805789 A EP 08805789A EP 2195581 B1 EP2195581 B1 EP 2195581B1
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- EP
- European Patent Office
- Prior art keywords
- zone
- flow
- primary
- tertiary
- opening
- Prior art date
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- 238000009792 diffusion process Methods 0.000 title description 43
- 230000000694 effects Effects 0.000 claims description 21
- 239000000203 mixture Substances 0.000 claims description 13
- 238000009434 installation Methods 0.000 claims description 11
- 230000033228 biological regulation Effects 0.000 claims description 9
- 238000009423 ventilation Methods 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 6
- 230000001737 promoting effect Effects 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 238000007669 thermal treatment Methods 0.000 claims 1
- 230000004907 flux Effects 0.000 description 42
- 239000003570 air Substances 0.000 description 37
- 238000010438 heat treatment Methods 0.000 description 10
- 230000007170 pathology Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 239000012080 ambient air Substances 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 235000001954 papillon Nutrition 0.000 description 1
- 244000229285 papillon Species 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
Definitions
- the present invention relates to an air diffusion system in an enclosure.
- the field of the invention is the field of air diffusion in an enclosure or a cabin and the regulation of this diffusion.
- the invention applies more particularly to the diffusion of air in enclosures, such as hospital rooms, requiring on the one hand a good air circulation for reasons of hygiene and on the other hand a regulation fine quality of the air in the enclosure and the temperature inside the enclosure.
- the SPILOTAIR system comprises a heat treatment of the air using cylindrical terminal batteries and the suction of the ambient air of the enclosure by venturi effect.
- the venturi device and the terminal batteries are directly integrated in the ducts of the ventilation network or air distribution in the enclosure.
- the SPILOTAIR system has a first air diffusion grille in the room and a second grille to suck the ambient air.
- the document FR 2 817 951 A1 also discloses an air treatment device according to the preamble of claim 1. This device remains complex, expensive, and difficult to install and maintain
- An object of the invention is to overcome the aforementioned drawbacks.
- Another objective of the invention is to propose an air diffusion system in a chamber that is less complex than current systems.
- the invention thus proposes an air diffusion system according to claim 1.
- This system comprises means for mixing the primary and secondary flows providing a so-called tertiary air flow, diffused into the enclosure through an opening, called diffusion, of the tertiary zone.
- the system according to the invention is in the form of a one-piece assembly.
- This one-piece assembly may comprise fastening means provided for fixing it to the level of the ceiling or a wall of the enclosure or on a surface located in the enclosure.
- the monoblock assembly can also be in the form of a rack or drawer to slide in a location that is fixed on a wall or ceiling.
- the system according to the invention is easier to install than state-of-the-art systems and allows a great saving in installation time.
- the installation of the system according to the invention does not require any specific knowledge, and therefore no intervention on the part of a qualified person. It can be performed by an unqualified person.
- the maintenance of the system according to the invention is also easier to achieve than the maintenance of the systems of the state of the art.
- the monobloc assembly can be removed, cleaned and replaced easily.
- the monoblock system is also convenient to move, for example in the workshop, to carry out a particular maintenance if necessary.
- the primary flow may be a stream having previously undergone any treatment by a treatment device and brought to or near the enclosure by means of a network of ducts or ducts in which it is under pressure or not. .
- the primary air stream may be an air stream, taken outside or provided by another device, and heat-treated by a heat treatment device, such as a heat pump device.
- the primary flow may be at a temperature for example between 8 and 35 ° C, which offers a wider range than in systems usually employed that use temperatures of the order of 14 to 32 °.
- Another advantage of the invention results in the implementation of reduced air flow rates and the reduction of the dimensions of ducts and air handling units.
- the inlet opening of the secondary flow is close to the diffusion opening, so that the diffusion of the tertiary flow into the enclosure creates an induction effect favoring the admission of the secondary flow in the secondary zone.
- the admission of the secondary flow into the secondary zone is facilitated by the diffusion of the tertiary flow.
- the proximity of the intake opening of the secondary flow and the diffusion opening of the tertiary flow makes it possible to produce a one-piece assembly of reduced dimensions and thus of little space and to use a single gate for opening. secondary flow admission and diffusion opening of the tertiary flow in the room.
- the mixing means comprise a wall between the primary zone and the tertiary zone, effecting a mixture of the primary and secondary flow by venturi effect under the action of the speed of the primary flow.
- the wall comprises a portion having a hollow shape traversed by the primary flow to pass from the primary zone to the tertiary zone, the section of the hollow shape gradually decreasing between an upstream end located on the side of the primary zone and a downstream end located on the side of the tertiary zone so that the passage of the primary flow by the hollow form creates a venturi effect in the tertiary zone at the downstream end of the hollow form.
- This hollow form may for example be a nozzle, a funnel, of conical or rectangular shape to create a venturi effect when traversed by a flow at a medium speed or significant.
- the wall may be substantially planar and include openings passages or holes through the wall and through which the primary flow passes from the primary zone to the tertiary zone.
- the wall may comprise through openings or through holes in addition to a non-planar shape, such as a nozzle, a funnel, a conical or rectangular shape to create a venturi effect as described above.
- the openings of passages, or holes, through can be substantially frustoconical in shape, extending from the primary zone to the tertiary zone, the largest section being on the side of the primary zone and the smaller section lying on the side of the tertiary zone.
- Such a shape of the passage openings makes it possible to reduce the noise caused by the passage of the primary flow from the primary zone to the tertiary zone.
- the secondary flow passes from the secondary zone to the tertiary zone through a passage opening located near the downstream end of the hollow form, so that the venturi effect, generated by the speed of passage from the primary flow through the primary passage opening, creates a depression favoring the passage of the secondary flow from the secondary zone to the tertiary zone.
- this passage opening "secondary passage opening”.
- the primary flow and the secondary flow pass, respectively from the primary zone and the secondary zone, to the tertiary zone through the primary and secondary passage openings.
- the primary passage opening is in the wall separating the primary zone and the zone tertiary.
- this wall also separates the primary zone and the secondary zone.
- the passage of the primary flow through the primary passage opening creates a depression at the downstream end of this opening. This depression is the result of the venturi effect obtained by the passage, at high speed, of the primary flow through the primary passage opening whose section decreases gradually along the direction of passage of this primary flow.
- the depression created at the downstream end of the primary passage opening causes the passage of the secondary flow to the tertiary zone through the secondary passage opening which is close to the downstream end of the passage opening primary.
- the passage opening from the secondary flow to the tertiary zone may be formed by an inclined wall which extends substantially parallel to one of the side walls of the primary passage opening.
- the admission means make it possible to vary the composition of the tertiary flux diffused in the chamber by varying the proportions of the primary and secondary flux that are mixed.
- the admission means make it possible to make the system according to the invention independent of the pressure of the distribution network of the primary flow.
- the system according to the invention may further comprise a fourth zone having an intake opening of a fourth flow coming from of the enclosure, and a passage opening of this fourth flow from the fourth zone to the tertiary zone to mix with the primary and secondary flow.
- the tertiary flow is composed of the primary and secondary flows, and the fourth flow.
- the system according to the invention may comprise ventilation means arranged at the passage opening of the fourth flow promoting the passage of the fourth flow from the fourth zone to the tertiary zone.
- the user has an additional control means of the composition and the temperature of the tertiary flow. It can vary the composition and temperature of the tertiary stream by adding the fourth stream to the primary and secondary streams.
- the ventilation means arranged at the passage opening of the fourth flow the user has the possibility of varying the proportion of the fourth flow mixing with the primary and secondary flow and therefore to regulate in a fine way the composition and the temperature of the tertiary flux diffused in the enclosure.
- the inlet opening of the fourth flow in the fourth zone may be close to the diffusion opening of the tertiary flow in the enclosure, so that the diffusion of the tertiary flow into the enclosure creates a cooling effect. induction promoting the admission of the fourth flow in the fourth zone.
- the fourth zone may be part of the secondary zone.
- the fourth flow is the secondary flow
- the intake opening of the fourth flow is the inlet opening of the secondary flow.
- the system according to the invention may further comprise means for treating the primary flow, more particularly heat treatment means, arranged between the intake opening of the primary flow and the mixing means, and intended to be traversed by the primary flow.
- the system according to the invention makes it possible to regulate the temperature of the primary flow and therefore indirectly of the tertiary flux diffused in the enclosure to either heat or cool the enclosure.
- the primary flow may not be heat treated in which case the system according to the invention allows for ventilation of the enclosure or a renewal of the air of the enclosure.
- the one-piece assembly may be provided with fixing means for fixing it on a surface in the enclosure, for example in a false ceiling.
- fixing means can be of type "snap”, or "rack” or “drawer” to install and uninstall the system in a practical way.
- an air diffusion installation comprising at least one air diffusion system according to the invention.
- Such an installation may comprise a heat pump supplying a heat-treated primary stream to a plurality of air diffusion systems each located in an enclosure, by means of a network of primary flow distribution ducts.
- the temperature of the primary flow supplied to the air diffusion systems can be constant, each of the systems then making it possible to independently regulate the temperature of the tertiary flux diffused in the enclosure by means of heat treatment means of the system according to the invention.
- the regulation of the temperature of air diffusion in each enclosure can be achieved through an electronic control module. This electronic control module can also make it possible to control and regulate the flow rate of the different flows in order to produce a vacuum or an overpressure in the enclosure as described above.
- Each control and regulation module can be connected to a central supervision module.
- This central supervision module can acquire the operating data of each of the broadcasting systems through communication with the control and regulation modules associated with each of the systems. It can also remotely modify the operation of each of the broadcasting systems, individually, by acting on the associated control modules.
- the figure 1 is a representation according to an isometric view of a first version of the system according to the invention.
- the outer casing of the system has been omitted voluntarily for clarity.
- the system is in a housing as shown in FIG. Figures 8 to 11 .
- the system comprises a primary zone 11 having an inlet opening 12 of a primary flow, two secondary zones 13 each having an inlet opening 14 of a secondary flow coming from the enclosure, a tertiary zone 15 having an opening of diffusion 16 of a tertiary flow in the enclosure and a fourth zone 17 having an inlet opening 18 of a fourth flow also coming from the enclosure.
- the system further comprises means 19 for admitting the primary flow to heat treatment means 20 of this primary flow.
- the primary flow is admitted by the intake means 19, comprising a piston head 191 mounted on a piston 192.
- the primary flow admitted into the primary zone is directed towards the heat treatment means 20, for example electric or water coil or air conditioning means for heating or cooling the primary flow if necessary.
- the primary stream may be heat treated by the heat treatment means 20 as it passes therethrough. As needed, the primary stream can either be heated or cooled.
- the primary flow then passes through a wall 21, separating the primary zone from the tertiary zone.
- This wall comprises a passage opening 22 of the primary flow from the primary zone 11 to the tertiary zone 15.
- the passage opening 22 is a hollow shape, in the wall 21, through which the primary flow of its upstream end 22a is located. on the side of the primary zone 11 towards its downstream end 22b on the side of the tertiary zone 15.
- the section of the through opening 22 decreases in the direction of flow of the primary flow, that is to say of the primary zone 11 to the tertiary zone 15 or from its upstream end 22a to its downstream end 22b ,.
- This passage opening 22 may for example be a nozzle , an opening of a conical or funnel-shaped shape or of any other shape making it possible to create a venturi effect at the level of the tertiary zone 15 under the effect of the speed of passage of the primary flow.
- the passage opening 22 On the side of its downstream end 22b, the passage opening 22 comprises several through holes 23 allowing the passage of the primary flow in the tertiary zone 15.
- the secondary flow is admitted into the secondary zones 13 through the intake openings 14.
- This secondary flow passes from the secondary zones 13 to the tertiary zone 15 through a passage opening 24 located near the downstream end 22a of the passage opening 22.
- the venturi effect created at the downstream end 22b of the passage opening 22 through the passage of the primary flow promotes the passage of the secondary flow from the secondary zones 13 to the tertiary zone 15.
- the passage opening 24 is formed by a wall 25 which extends from the secondary zones up to the proximity of the downstream end 22b of the through opening 22, substantially parallel to one of the side walls of the opening 22. This wall can be profiled so as to obtain the maximum yield.
- the system according to the invention further comprises a fourth zone 17 having an inlet opening 18 of a fourth flow from the workpiece.
- This fourth zone 17 furthermore comprises a passage opening 26 of the fourth flow towards the tertiary zone 15.
- the user has a means for controlling the pressure in the chamber.
- the user has the possibility of varying the proportion of the fourth flow mixing with the primary and secondary flow and thus regulate more finely the composition of the tertiary flux diffused into the enclosure.
- the primary flow may not be heat treated in which case the system according to the invention allows for ventilation of the enclosure or simply a renewal of the air enclosure.
- the inlet opening 14 of the secondary flow in the secondary zone 13 is close to the diffusion opening 16 of the tertiary flow in the enclosure.
- the inlet opening 18 of the fourth flow is between the inlet openings 14 of the secondary flow.
- the diffusion opening 16 of the tertiary flow is located above the inlet openings 14 and 18 over the entire width of the system. This arrangement allows for a system of reduced dimensions and therefore compact.
- the primary stream may have undergone any pretreatment by a treatment device before being brought into proximity or into the enclosure by means of a conduit or duct network.
- This pretreatment may be a heat treatment carried out by a heat pump.
- the temperature of the primary stream arriving at the inlet opening 12 of the system can be constant at a temperature between 8 and 35 ° C.
- the figure 7 presents a second version of the system according to the invention in a profile view.
- the wall 25 forming the passage opening of the secondary flow from the secondary zone 13 to the tertiary zone 15 is more rounded and the passage opening 22 is less elongated.
- the passage opening 26 has a position closer to the wall 25.
- the fourth zone is part of the secondary zone.
- the Figures 8 to 10 are each a representation of the system of the figure 1 in its case according to different views.
- the figure 11 is a representation of the system of the figure 1 in its case in a sectional view with respect to the axis BB shown in figure 8 .
- the housing 28 has a non-polluting thermal and acoustic envelope and approved by the fire protection standards.
- the housing includes holes 28 for easily snap into a base attached to a surface of the enclosure.
- the system further comprises a front grille 30 disposed in front of the inlet openings 14 of the secondary flow, the inlet opening 18 of the fourth flow and in front of the diffusion opening 16 of the tertiary flow.
- the inlet opening of the secondary flow, and the diffusion opening of the tertiary flow are on the same face of the system according to the invention.
- Such an arrangement facilitates the implementation of the system according to the invention, for example above a door, totally or partially recessed.
- such an arrangement of these openings makes it possible to use a single grid for the two openings.
- the venturi effect created by the diffusion of the tertiary flow in the room is optimized and the admission of the secondary flow is thus facilitated.
- system according to the invention is very hygienic because it has no dead zone where could develop germs or condensates.
- the system described above can be implemented in an air diffusion installation.
- Such an installation may comprise a heat pump supplying a heat-treated primary stream to a plurality of air diffusion systems each located in an enclosure, by means of a network of primary flow distribution ducts.
- the temperature of the primary flow supplied to the air diffusion systems can be constant, each of the systems then making it possible to independently regulate the temperature of the tertiary flux diffused in the enclosure.
- the regulation of the air diffusion temperature in each chamber can be achieved by means of an electronic control module.
- This electronic control module can also make it possible to control and regulate the flow rate of the different flows in order to produce a vacuum or an overpressure in the enclosure as described above.
- Each control and regulation module can be connected to a central supervision module.
- This central supervision module can acquire the operating data of each of the broadcasting systems through communication with the control and supervision modules associated with each of them. It can also remotely modify the operation of each of the broadcasting systems, individually, by acting on the associated control modules.
- each of the systems can be done by any means such as for example by means of computer or telecommunications, such as a Pocket PC, connected by Bluetooth connection to each control and regulation module.
- the central supervision module can be connected to a touch screen.
- the supervision can be done over a TCP / IP connection, thus making it possible to use an existing network in the enclosure.
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Description
La présente invention concerne un système de diffusion d'air dans une enceinte.The present invention relates to an air diffusion system in an enclosure.
Le domaine de l'invention est le domaine de la diffusion d'air dans une enceinte ou une cabine et la régulation de cette diffusion.The field of the invention is the field of air diffusion in an enclosure or a cabin and the regulation of this diffusion.
L'invention s'applique plus particulièrement à la diffusion d'air dans des enceintes, telles que des chambres d'hôpital, nécessitant d'une part une bonne circulation d'air pour des raisons d'hygiène et d'autre part une régulation fine de la qualité de l'air se trouvant dans l'enceinte ainsi que la température à l'intérieur de l'enceinte.The invention applies more particularly to the diffusion of air in enclosures, such as hospital rooms, requiring on the one hand a good air circulation for reasons of hygiene and on the other hand a regulation fine quality of the air in the enclosure and the temperature inside the enclosure.
Il existe actuellement de nombreux systèmes de diffusion d'air dans une enceinte. Ces systèmes requièrent le plus souvent la mise en oeuvre de débits d'air tout en associant, selon les systèmes, une distribution d'air, d'eau chaude et froide, des radiateurs statiques ou des ventilo-convecteurs et des grilles d'insufflation et d'extraction d'air.There are currently many air distribution systems in an enclosure. These systems most often require the implementation of air flows while associating, according to the systems, a distribution of air, hot and cold water, static radiators or fan coils and insufflation grids. and extracting air.
Parmi les systèmes existants on connaît notamment le système SPILOTAIR. Ce dernier comprend un traitement thermique de l'air utilisant des batteries terminales cylindriques et l'aspiration de l'air ambiant de l'enceinte par effet venturi. Le dispositif de venturi ainsi que les batteries terminales sont directement intégrés dans les gaines du réseau d'aération ou de distribution d'air dans l'enceinte. Le système SPILOTAIR présente une première grille de diffusion d'air dans la pièce et une deuxième grille pour aspirer l'air ambiante.Among the existing systems, the SPILOTAIR system is known in particular. The latter comprises a heat treatment of the air using cylindrical terminal batteries and the suction of the ambient air of the enclosure by venturi effect. The venturi device and the terminal batteries are directly integrated in the ducts of the ventilation network or air distribution in the enclosure. The SPILOTAIR system has a first air diffusion grille in the room and a second grille to suck the ambient air.
L'inconvénient majeur d'un tel système est la complexité de mise en place des différents composants de ce système. En effet, la mise en place du dispositif de venturi ainsi que des batteries terminales dans les gaines est une opération délicate et qui nécessite un temps d'installation important. De plus, ce type de systèmes présente des grilles séparées pour la diffusion d'air dans la pièce et l'aspiration de l'air ambiant de l'enceinte, ce qui nécessite la mise en place d'au moins deux grilles par enceinte et la liaison d'au moins deux grilles au réseau de distribution d'air. Ces caractéristiques impliquent, d'une part de nombreuses pièces rendant le système onéreux et un temps d'installation du système important rendant son installation peu pratique. Par ailleurs, la complexité d'un tel système rend son entretien difficile et onéreux.The major disadvantage of such a system is the complexity of setting up the various components of this system. Indeed, the establishment of the venturi device and the terminal batteries in the ducts is a delicate operation and requires a significant installation time. In addition, this type of system has separate grids for the diffusion of air into the room and the suction of the ambient air of the enclosure, which requires the establishment of at least two grids per chamber and connecting at least two grids to the air distribution network. These features imply, on the one hand many parts making the system expensive and a time of installation of the important system making its installation a little convenient. Moreover, the complexity of such a system makes maintenance difficult and expensive.
Le document
Un objectif de l'invention est de palier aux inconvénients précités.An object of the invention is to overcome the aforementioned drawbacks.
Un autre objectif de l'invention est de proposer un système de diffusion d'air dans une enceinte moins complexe que les systèmes actuels.Another objective of the invention is to propose an air diffusion system in a chamber that is less complex than current systems.
Enfin, il est aussi un objectif de l'invention de proposer un système de diffusion d'air dans une enceinte peu onéreux, facile à installer et à entretenir.Finally, it is also an object of the invention to provide an air diffusion system in an inexpensive enclosure, easy to install and maintain.
L'invention propose ainsi un système de diffusion d'air selon la revendication 1.The invention thus proposes an air diffusion system according to claim 1.
Ce système comprend des moyens de mélange des flux primaires et secondaires fournissant un flux d'air, dit tertiaire, diffusé dans l'enceinte au travers d'une ouverture, dite de diffusion, de la zone tertiaire. Le système selon l'invention se présente sous la forme d'un ensemble monobloc.This system comprises means for mixing the primary and secondary flows providing a so-called tertiary air flow, diffused into the enclosure through an opening, called diffusion, of the tertiary zone. The system according to the invention is in the form of a one-piece assembly.
Cet ensemble monobloc peut comprendre des moyens de fixation prévus pour le fixer au niveau du plafond ou un mur de l'enceinte ou sur une surface se trouvant dans l'enceinte. L'ensemble monobloc peut aussi se présenter sous la forme d'un rack ou d'un tiroir à glisser dans un emplacement qui est fixé sur un mur ou un plafond.This one-piece assembly may comprise fastening means provided for fixing it to the level of the ceiling or a wall of the enclosure or on a surface located in the enclosure. The monoblock assembly can also be in the form of a rack or drawer to slide in a location that is fixed on a wall or ceiling.
Le système selon l'invention est plus facile à installer que les systèmes de l'état de l'art et permet de réaliser une grande économie en temps d'installation.The system according to the invention is easier to install than state-of-the-art systems and allows a great saving in installation time.
De plus, l'installation du système selon l'invention ne nécessite aucune connaissance spécifique, et donc aucune intervention de la part d'une personne qualifiée. Elle peut être réalisée par une personne non qualifiée.In addition, the installation of the system according to the invention does not require any specific knowledge, and therefore no intervention on the part of a qualified person. It can be performed by an unqualified person.
Par ailleurs, l'entretien du système selon l'invention est aussi plus facile à réaliser que l'entretien des systèmes de l'état de l'art. En effet, l'ensemble monobloc peut être retiré, nettoyé et remplacé facilement. Le système monobloc est aussi pratique à déplacer, par exemple en atelier, pour procéder à un entretien particulier si cela est nécessaire.Moreover, the maintenance of the system according to the invention is also easier to achieve than the maintenance of the systems of the state of the art. Indeed, the monobloc assembly can be removed, cleaned and replaced easily. The monoblock system is also convenient to move, for example in the workshop, to carry out a particular maintenance if necessary.
Le flux primaire peut être un flux ayant subi, au préalable, un traitement quelconque par un dispositif de traitement et amené à proximité ou dans l'enceinte au moyen d'un réseau de conduits ou de gaines dans lequel il se trouve sous pression ou non.The primary flow may be a stream having previously undergone any treatment by a treatment device and brought to or near the enclosure by means of a network of ducts or ducts in which it is under pressure or not. .
Plus particulièrement, le flux d'air primaire peut être un flux d'air, prélevé à l'extérieur ou fourni par un autre dispositif, et traité thermiquement par un dispositif de traitement thermique, tel qu'un dispositif de pompe à chaleur. Le flux primaire peut être à une température comprise par exemple entre 8 et 35°C, ce qui offre une plage plus large que dans les systèmes habituellement employés qui utilisent des températures de l'ordre de 14 à 32°. Un autre avantage de l'invention a pour conséquence la mise en oeuvre de débits d'air réduits et la réduction des dimensions des gaines et des centrales de traitement d'air.More particularly, the primary air stream may be an air stream, taken outside or provided by another device, and heat-treated by a heat treatment device, such as a heat pump device. The primary flow may be at a temperature for example between 8 and 35 ° C, which offers a wider range than in systems usually employed that use temperatures of the order of 14 to 32 °. Another advantage of the invention results in the implementation of reduced air flow rates and the reduction of the dimensions of ducts and air handling units.
Avantageusement, l'ouverture d'admission du flux secondaire se trouve à proximité de l'ouverture de diffusion, de façon à ce que la diffusion du flux tertiaire dans l'enceinte crée un effet d'induction favorisant l'admission du flux secondaire dans la zone secondaire. Ainsi, l'admission du flux secondaire dans la zone secondaire est facilitée par la diffusion du flux tertiaire. De plus, la proximité de l'ouverture d'admission du flux secondaire et de l'ouverture de diffusion du flux tertiaire, permet de réaliser un ensemble monobloc de dimensions réduites et donc peu encombrant et d'utiliser une seule grille pour l'ouverture d'admission de flux secondaire et l'ouverture de diffusion du flux tertiaire dans la pièce.Advantageously, the inlet opening of the secondary flow is close to the diffusion opening, so that the diffusion of the tertiary flow into the enclosure creates an induction effect favoring the admission of the secondary flow in the secondary zone. Thus, the admission of the secondary flow into the secondary zone is facilitated by the diffusion of the tertiary flow. In addition, the proximity of the intake opening of the secondary flow and the diffusion opening of the tertiary flow makes it possible to produce a one-piece assembly of reduced dimensions and thus of little space and to use a single gate for opening. secondary flow admission and diffusion opening of the tertiary flow in the room.
Dans une version avantageuse du système selon l'invention, les moyens de mélange comprennent une paroi entre la zone primaire et la zone tertiaire, réalisant un mélange du flux primaire et secondaire par effet venturi sous l'action de la vitesse du flux primaire.In an advantageous version of the system according to the invention, the mixing means comprise a wall between the primary zone and the tertiary zone, effecting a mixture of the primary and secondary flow by venturi effect under the action of the speed of the primary flow.
Avantageusement, la paroi comprend une partie présentant une forme creuse traversée par le flux primaire pour passer de la zone primaire à la zone tertiaire, la section de la forme creuse diminuant progressivement entre une extrémité amont située du coté de la zone primaire et une extrémité aval située du coté de la zone tertiaire de manière à ce que le passage du flux primaire par la forme creuse créé un effet venturi dans la zone tertiaire au niveau de l'extrémité aval de la forme creuse. Dans la suite de la description nous désignerons cette forme creuse « ouverture de passage primaire ». Cette ouverture de passage peut par exemple être une buse, un entonnoir, de forme conique ou rectangulaire permettant de créer un effet venturi lorsqu'elle traversée par un flux à une vitesse moyenne ou importante.Advantageously, the wall comprises a portion having a hollow shape traversed by the primary flow to pass from the primary zone to the tertiary zone, the section of the hollow shape gradually decreasing between an upstream end located on the side of the primary zone and a downstream end located on the side of the tertiary zone so that the passage of the primary flow by the hollow form creates a venturi effect in the tertiary zone at the downstream end of the hollow form. In the remainder of the description, we will designate this hollow form "primary passage opening". This passage opening may for example be a nozzle, a funnel, of conical or rectangular shape to create a venturi effect when traversed by a flow at a medium speed or significant.
Dans une version simplifiée, la paroi peut être sensiblement plane et comporter des ouvertures de passages ou des trous traversant la paroi et par lesquels le flux primaire passe de la zone primaire vers la zone tertiaire. La paroi peut comporter des ouvertures de passage ou des trous traversants en plus d'une forme non plane, telle qu'une buse, un entonnoir, une forme conique ou rectangulaire permettant de créer un effet venturi tel que décrit plus haut.In a simplified version, the wall may be substantially planar and include openings passages or holes through the wall and through which the primary flow passes from the primary zone to the tertiary zone. The wall may comprise through openings or through holes in addition to a non-planar shape, such as a nozzle, a funnel, a conical or rectangular shape to create a venturi effect as described above.
Dans une version particulière, les ouvertures de passages, ou trous, traversants peuvent être de forme sensiblement tronconique, s'étendant de la zone primaire vers la zone tertiaire, la plus grande section se trouvant du côté de la zone primaire et la plus petite section se trouvant du côté de la zone tertiaire. Une telle forme des ouvertures de passage permet de diminuer le bruit provoqué par le passage du flux primaire de la zone primaire vers la zone tertiaire.In a particular version, the openings of passages, or holes, through can be substantially frustoconical in shape, extending from the primary zone to the tertiary zone, the largest section being on the side of the primary zone and the smaller section lying on the side of the tertiary zone. Such a shape of the passage openings makes it possible to reduce the noise caused by the passage of the primary flow from the primary zone to the tertiary zone.
De plus, le flux secondaire passe de la zone secondaire vers la zone tertiaire par une ouverture de passage se trouvant à proximité de l'extrémité aval de la forme creuse, de façon à ce que l'effet venturi, généré par la vitesse de passage du flux primaire par l'ouverture de passage primaire, créé une dépression favorisant le passage du flux secondaire de la zone secondaire vers la zone tertiaire. Dans la suite de la description nous désignerons cette ouverture de passage « ouverture de passage secondaire ».In addition, the secondary flow passes from the secondary zone to the tertiary zone through a passage opening located near the downstream end of the hollow form, so that the venturi effect, generated by the speed of passage from the primary flow through the primary passage opening, creates a depression favoring the passage of the secondary flow from the secondary zone to the tertiary zone. In the remainder of the description we will designate this passage opening "secondary passage opening".
Le flux primaire et le flux secondaire passent, respectivement de la zone primaire et de la zone secondaire, vers la zone tertiaire au travers des ouvertures de passage primaire et secondaire. L'ouverture de passage primaire se trouve dans la paroi séparant la zone primaire et la zone tertiaire. Avantageusement, cette paroi sépare également la zone primaire et la zone secondaire. Le passage du flux primaire par l'ouverture de passage primaire créé une dépression au niveau de l'extrémité aval de cette ouverture. Cette dépression est le résultat de l'effet venturi obtenu par le passage, à vitesse importante, du flux primaire par l'ouverture de passage primaire dont la section diminue progressivement selon le sens de passage de ce flux primaire. La dépression créée au niveau de l'extrémité aval de l'ouverture de passage primaire entraîne le passage du flux secondaire vers la zone tertiaire par l'ouverture de passage secondaire qui se trouve à proximité de l'extrémité aval de l'ouverture de passage primaire.The primary flow and the secondary flow pass, respectively from the primary zone and the secondary zone, to the tertiary zone through the primary and secondary passage openings. The primary passage opening is in the wall separating the primary zone and the zone tertiary. Advantageously, this wall also separates the primary zone and the secondary zone. The passage of the primary flow through the primary passage opening creates a depression at the downstream end of this opening. This depression is the result of the venturi effect obtained by the passage, at high speed, of the primary flow through the primary passage opening whose section decreases gradually along the direction of passage of this primary flow. The depression created at the downstream end of the primary passage opening causes the passage of the secondary flow to the tertiary zone through the secondary passage opening which is close to the downstream end of the passage opening primary.
Dans un mode de réalisation particulier, l'ouverture de passage du flux secondaire vers la zone tertiaire peut être formée par une paroi inclinée qui s'étend sensiblement parallèlement à l'une des paroi latérale de l'ouverture de passage primaire.In a particular embodiment, the passage opening from the secondary flow to the tertiary zone may be formed by an inclined wall which extends substantially parallel to one of the side walls of the primary passage opening.
Dans une version avantageuse, le système selon l'invention peut comprendre des moyens d'admission du flux primaire dans la zone primaire. Ces moyens d'admission peuvent comprendre :
- des moyens d'aspiration prévus pour aspirer le flux primaire vers les moyens de mélange. Les moyens d'aspiration peuvent comprendre au moins un ventilateur disposé au niveau de l'ouverture d'admission du flux primaire et permettant d'augmenter ou de diminuer la vitesse d'admission du flux primaire ; et/ou
- des moyens de régulation du débit d'admission du flux primaire, lorsque le flux primaire arrivant au niveau de l'ouverture d'admission de flux primaire est sous pression ou a une vitesse moyenne ou importante, tel que dans un réseau de distribution de flux primaire sous pression. Ces moyens de régulation peuvent comprendre un piston équipé d'un volet simple, d'un volet papillon, d'un clapet, d'un iris, d'un diaphragme dont la position est régulée pour faire varier le débit de flux primaire admis dans la zone primaire. Ces moyens de régulation peuvent être de type mâle ou femelle.
- suction means provided for sucking the primary flow to the mixing means. The suction means may comprise at least one fan arranged at the intake opening of the primary flow and for increasing or decreasing the admission speed of the primary flow; and or
- means for regulating the admission flow of the primary flow, when the primary flow arriving at the primary flow inlet opening is under pressure or at a medium or high speed, such as in a flow distribution network primary pressure. These control means may comprise a piston equipped with a single flap, a butterfly flap, a flap, an iris, a diaphragm whose position is regulated to vary the flow rate of primary flow admitted into the primary zone. These regulating means may be of the male or female type.
Les moyens d'admission, du flux primaire dans la zone primaire et donc vers les moyens de mélange, permettent de faire varier directement ou indirectement :
- la vitesse d'admission du flux primaire dans la zone primaire ;
- la vitesse du flux primaire arrivant vers les moyens de mélange ;
- la vitesse de passage du flux primaire par l'ouverture de passage primaire ;
- l'effet venturi créé par le passage du flux primaire par l'ouverture de passage primaire ;
- la vitesse d'admission du flux secondaire dans la zone secondaire ;
- les proportions de flux secondaire et primaire lors du mélange, et donc la composition du flux tertiaire ; et
- la diffusion du flux tertiaire dans l'enceinte.
- the rate of admission of the primary flow into the primary zone;
- the speed of the primary flow arriving towards the mixing means;
- the speed of passage of the primary flow through the primary passage opening;
- the venturi effect created by the passage of the primary flow through the primary passage opening;
- the rate of admission of the secondary flow into the secondary zone;
- the proportions of secondary and primary flux during mixing, and therefore the composition of the tertiary flux; and
- the diffusion of tertiary flux in the enclosure.
Ainsi, les moyens d'admission permettent de faire varier la composition du flux tertiaire diffusé dans l'enceinte en faisant varier les proportions du flux primaire et secondaire qui sont mélangés.Thus, the admission means make it possible to vary the composition of the tertiary flux diffused in the chamber by varying the proportions of the primary and secondary flux that are mixed.
Par ailleurs les moyens d'admission font varier le débit d'admission du flux secondaire et le débit du flux tertiaire diffusé dans l'enceinte. Ainsi, il est possible de créer soit une dépression soit une surpression dans l'enceinte. Lorsque l'enceinte est une chambre d'hôpital, le système selon l'invention permet :
- de créer et de maintenir une surpression dans la chambre pour réaliser un confinement d'un patient par rapport à l'extérieur dans le cas par exemple de pathologies immunodéficientes ; ou
- de créer et de maintenir une dépression dans la chambre pour réaliser un confinement extérieur par rapport à un patient, dans le cas par exemple de pathologies très contagieuses.
- to create and maintain an overpressure in the chamber to achieve a confinement of a patient with respect to the outside in the case for example of immunodeficient diseases; or
- to create and maintain a depression in the chamber to achieve an external confinement with respect to a patient, in the case for example of highly contagious pathologies.
Les moyens d'admission permettent de rendre le système selon l'invention indépendant de la pression du réseau de distribution du flux primaire.The admission means make it possible to make the system according to the invention independent of the pressure of the distribution network of the primary flow.
Le système selon l'invention peut comprendre en outre une quatrième zone présentant une ouverture d'admission d'un quatrième flux provenant de l'enceinte, et une ouverture de passage de ce quatrième flux de la quatrième zone vers la zone tertiaire pour se mélanger au flux primaire et secondaire. Dans ce cas le flux tertiaire est composé des flux primaire et secondaire, et du quatrième flux.The system according to the invention may further comprise a fourth zone having an intake opening of a fourth flow coming from of the enclosure, and a passage opening of this fourth flow from the fourth zone to the tertiary zone to mix with the primary and secondary flow. In this case the tertiary flow is composed of the primary and secondary flows, and the fourth flow.
Le système selon l'invention peut comprendre des moyens de ventilation disposés au niveau de l'ouverture de passage du quatrième flux favorisant le passage du quatrième flux de la quatrième zone vers la zone tertiaire.The system according to the invention may comprise ventilation means arranged at the passage opening of the fourth flow promoting the passage of the fourth flow from the fourth zone to the tertiary zone.
Ainsi, l'utilisateur dispose d'un moyen de contrôle supplémentaire de la composition et de la température du flux tertiaire. Il peut faire varier la composition et la température du flux tertiaire par ajout du quatrième flux au flux primaire et secondaire. De plus, en faisant varier le fonctionnement des moyens de ventilation disposés au niveau de l'ouverture de passage du quatrième flux, l'utilisateur a la possibilité de faire varier la proportion du quatrième flux se mélangeant au flux primaire et secondaire et donc de réguler de manière fine la composition et la température du flux tertiaire diffusé dans l'enceinte.Thus, the user has an additional control means of the composition and the temperature of the tertiary flow. It can vary the composition and temperature of the tertiary stream by adding the fourth stream to the primary and secondary streams. In addition, by varying the operation of the ventilation means arranged at the passage opening of the fourth flow, the user has the possibility of varying the proportion of the fourth flow mixing with the primary and secondary flow and therefore to regulate in a fine way the composition and the temperature of the tertiary flux diffused in the enclosure.
Avantageusement, l'ouverture d'admission du quatrième flux dans la quatrième zone peut se trouver à proximité de l'ouverture de diffusion du flux tertiaire dans l'enceinte, de façon que la diffusion du flux tertiaire dans l'enceinte créé un effet d'induction favorisant l'admission du quatrième flux dans la quatrième zone.Advantageously, the inlet opening of the fourth flow in the fourth zone may be close to the diffusion opening of the tertiary flow in the enclosure, so that the diffusion of the tertiary flow into the enclosure creates a cooling effect. induction promoting the admission of the fourth flow in the fourth zone.
Dans un mode de réalisation particulier la quatrième zone peut faire partie de la zone secondaire. Dans ce cas, le quatrième flux est le flux secondaire, l'ouverture d'admission du quatrième flux est l'ouverture d'admission du flux secondaire.In a particular embodiment, the fourth zone may be part of the secondary zone. In this case, the fourth flow is the secondary flow, the intake opening of the fourth flow is the inlet opening of the secondary flow.
Le système selon l'invention peut comprendre en outre des moyens de traitement du flux primaire, plus particulièrement des moyens de traitement thermique, disposés entre l'ouverture d'admission du flux primaire et les moyens de mélange, et prévus pour être traversés par le flux primaire. Ainsi le système selon l'invention permet de réguler la température du flux primaire et donc indirectement du flux tertiaire diffusé dans l'enceinte pour soit chauffer, soit refroidir l'enceinte.The system according to the invention may further comprise means for treating the primary flow, more particularly heat treatment means, arranged between the intake opening of the primary flow and the mixing means, and intended to be traversed by the primary flow. Thus, the system according to the invention makes it possible to regulate the temperature of the primary flow and therefore indirectly of the tertiary flux diffused in the enclosure to either heat or cool the enclosure.
Le flux primaire peut ne pas être traité thermiquement auquel cas le système selon l'invention permet de réaliser une ventilation de l'enceinte ou un renouvellement de l'air de l'enceinte.The primary flow may not be heat treated in which case the system according to the invention allows for ventilation of the enclosure or a renewal of the air of the enclosure.
La disposition des différentes zones dans l'ensemble monobloc permet d'avoir un ensemble compact, de dimension réduites et facile à manipuler. Dans une disposition particulière, les moyens de mélange séparent l'ensemble monobloc en deux parties, l'une comprenant la zone primaire, et l'autre comprenant la zone secondaire et la zone tertiaire. Les zones secondaire et tertiaire sont superposées et séparées par au moins une paroi. Dans le cas où le système selon l'invention présente une quatrième zone, telle que décrite plus haut, la quatrième zone peut se situer en dessous de la zone tertiaire, plus particulièrement au même niveau que la zone secondaire. La quatrième zone peut, par exemple, être disposée dans l'ensemble de manière à séparer la zone secondaire en deux parties. Une telle disposition des zones permet d'avoir une seule grille pour les ouvertures :
- de diffusion du flux tertiaire dans l'enceinte,
- d'admission du flux secondaire dans la zone secondaire, et
- d'admission du quatrième flux dans la quatrième zone.
- of tertiary flux diffusion in the enclosure,
- intake of the secondary flow in the secondary zone, and
- of the fourth flow into the fourth zone.
L'ensemble monobloc peut être doté de moyens de fixation permettant de le fixer sur une surface se trouvant dans l'enceinte, par exemple dans un faux plafond. Ces moyens de fixation peuvent être de type « enclipsable », ou « rack » ou encore « tiroir » permettant d'installer et de désinstaller le système de manière pratique.The one-piece assembly may be provided with fixing means for fixing it on a surface in the enclosure, for example in a false ceiling. These fixing means can be of type "snap", or "rack" or "drawer" to install and uninstall the system in a practical way.
Selon un autre aspect de l'invention il est proposé une installation de diffusion d'air comprenant au moins un système de diffusion d'air selon l'invention. Une telle installation peut comprendre une pompe à chaleur fournissant un flux primaire traité thermiquement à plusieurs systèmes de diffusion d'air se trouvant chacun dans une enceinte, au moyen d'un réseau de gaines de distribution de flux primaire. La température du flux primaire fourni aux systèmes de diffusion d'air peut être constante, chacun des systèmes permettant ensuite de réguler indépendamment la température du flux tertiaire diffusé dans l'enceinte grâce aux moyens de traitement thermique du système selon l'invention. La régulation de la température de diffusion d'air dans chaque enceinte peut être réalisée grâce à un module électronique de contrôle. Ce module électronique de contrôle peut aussi permettre de contrôler et de réguler le débit des différents flux pour réaliser une dépression ou une surpression dans l'enceinte tel que décrit plus haut.According to another aspect of the invention there is provided an air diffusion installation comprising at least one air diffusion system according to the invention. Such an installation may comprise a heat pump supplying a heat-treated primary stream to a plurality of air diffusion systems each located in an enclosure, by means of a network of primary flow distribution ducts. The temperature of the primary flow supplied to the air diffusion systems can be constant, each of the systems then making it possible to independently regulate the temperature of the tertiary flux diffused in the enclosure by means of heat treatment means of the system according to the invention. The regulation of the temperature of air diffusion in each enclosure can be achieved through an electronic control module. This electronic control module can also make it possible to control and regulate the flow rate of the different flows in order to produce a vacuum or an overpressure in the enclosure as described above.
Chaque module de contrôle et de régulation peut être relié à un module central de supervision. Ce module central de supervision peut acquérir les données de fonctionnement de chacun des systèmes de diffusion grâce à une communication avec les modules de contrôle et de régulation associé à chacun des systèmes. Il peut aussi modifier à distance le fonctionnement de chacun des systèmes de diffusion, de manière individuelle, en agissant sur les modules de contrôle associés.Each control and regulation module can be connected to a central supervision module. This central supervision module can acquire the operating data of each of the broadcasting systems through communication with the control and regulation modules associated with each of the systems. It can also remotely modify the operation of each of the broadcasting systems, individually, by acting on the associated control modules.
D'autres avantages et caractéristiques apparaîtront à l'examen de la description détaillée d'un mode de réalisation nullement limitatif, et des dessins annexés sur lesquels
- la
figure 1 est une représentation selon une vue isométrique d'une première version du système selon l'invention en faisant abstraction du boîtier dans lequel il se trouve en fonctionnement ; - la
figure 2 est une représentation selon une vue de dessus du système de lafigure 1 ; - la
figure 3 est une représentation du système de lafigure 1 selon une vue du coté de l'ouverture d'admission du flux primaire ; - la
figure 4 est une représentation du système de lafigure 1 selon une vue du côté de l'ouverture de diffusion du flux tertiaire ; - la
figure 5 est une représentation du système de lafigure 1 selon une vue de profil ; - la
figure 6 est une représentation du système de lafigure 1 selon une vue en coupe ; - la
figure 7 est une représentation d'une deuxième version du système selon l'invention en faisant abstraction du boîtier dans lequel il se trouve en fonctionnement ; - la
figure 8 est une représentation selon une vue de dessus du système de lafigure 1 avec le boîtier dans lequel il se trouve en fonctionnement ; - la
figure 9 est une représentation du système de lafigure 8 selon une vue du coté de l'ouverture d'admission du flux primaire ; - la
figure 10 est une représentation du système de lafigure 8 selon une vue du côté de l'ouverture de diffusion du flux tertiaire ; et - la
figure 11 est une représentation du système de lafigure 8 selon une vue en coupe ;
- the
figure 1 is a representation according to an isometric view of a first version of the system according to the invention by disregarding the housing in which it is in operation; - the
figure 2 is a representation according to a top view of the system of thefigure 1 ; - the
figure 3 is a representation of the system of thefigure 1 according to a view of the side of the intake opening of the primary flow; - the
figure 4 is a representation of the system of thefigure 1 in a view on the side of the diffusion opening of the tertiary flow; - the
figure 5 is a representation of the system of thefigure 1 according to a profile view; - the
figure 6 is a representation of the system of thefigure 1 in a sectional view; - the
figure 7 is a representation of a second version of the system according to the invention by disregarding the housing in which it is in operation; - the
figure 8 is a representation according to a top view of the system of thefigure 1 with the housing in which it is in operation; - the
figure 9 is a representation of the system of thefigure 8 according to a view of the side of the intake opening of the primary flow; - the
figure 10 is a representation of the system of thefigure 8 in a view on the side of the diffusion opening of the tertiary flow; and - the
figure 11 is a representation of the system of thefigure 8 in a sectional view;
La
Nous allons maintenant donner une description de cette première version du système selon l'invention en référence aux
Le système comprend une zone primaire 11 présentant une ouverture d'admission 12 d'un flux primaire, deux zones secondaires 13 présentant chacune une ouverture d'admission 14 d'un flux secondaire provenant de l'enceinte, une zone tertiaire 15 présentant une ouverture de diffusion 16 d'un flux tertiaire dans l'enceinte et une quatrième zone 17 présentant une ouverture d'admission 18 d'un quatrième flux provenant aussi de l'enceinte.The system comprises a
Le système comprend en outre des moyens d'admission 19 du flux primaire vers des moyens de traitement thermique 20 de ce flux primaire.The system further comprises means 19 for admitting the primary flow to heat treatment means 20 of this primary flow.
Le flux primaire est admis par les moyens d'admission 19, comportant une tête de piston 191 montée sur un piston 192. Le flux primaire admis dans la zone primaire se dirige vers les moyens de traitement thermique 20, par exemple des moyens de chauffage à batterie électrique ou à eau ou des moyens de climatisation permettant de chauffer ou de refroidir le flux primaire si besoin. Ainsi, le flux primaire peut être traité thermiquement par les moyens de traitement thermique 20 lorsqu'il les traverse. Selon le besoin, le flux primaire peut soit être chauffé soit être refroidi.The primary flow is admitted by the intake means 19, comprising a
Le flux primaire traverse ensuite une paroi 21, séparant la zone primaire de la zone tertiaire. Cette paroi comprend une ouverture de passage 22 du flux primaire de la zone primaire 11 vers la zone tertiaire 15. L'ouverture de passage 22 est une forme creuse, dans la paroi 21, traversée par le flux primaire de son extrémité amont 22a se trouvant du côté de la zone primaire 11 vers son extrémité aval 22b se trouvant du côté de la zone tertiaire 15. La section de l'ouverture de passage 22 diminue dans le sens de circulation du flux primaire, c'est-à-dire de la zone primaire 11 vers la zone tertiaire 15 ou encore de son extrémité amont 22a vers son extrémité aval 22b,. Le passage du flux primaire par l'ouverture de passage 22, à vitesse moyenne ou importante, créé un effet venturi à proximité de l'extrémité aval 22b de l'ouverture de passage 22. Cette ouverture de passage 22 peut par exemple être une buse, une ouverture d'une forme conique ou en forme d'entonnoir ou de toute autre forme permettant de créer un effet venturi au niveau de la zone tertiaire 15 sous l'effet de la vitesse de passage du flux primaire. Du coté de son extrémité aval 22b, l'ouverture de passage 22 comprend plusieurs trous traversants 23 permettant le passage du flux primaire dans la zone tertiaire 15.The primary flow then passes through a
Le flux secondaire est admis dans les zones secondaires 13 par les ouvertures d'admission 14. Ce flux secondaire passe des zones secondaires 13 vers la zone tertiaire 15 par une ouverture de passage 24 se trouvant à proximité de l'extrémité aval 22a de l'ouverture de passage 22. Ainsi, l'effet venturi créé au niveau de l'extrémité aval 22b de l'ouverture de passage 22 par le passage du flux primaire favorise le passage du flux secondaire des zones secondaires 13 vers la zone tertiaire 15.The secondary flow is admitted into the
L'ouverture de passage 24 est formée par une paroi 25 qui s'étend des zones secondaires jusqu'à à la proximité de l'extrémité aval 22b de l'ouverture de passage 22, sensiblement parallèlement à une des parois latérales de l'ouverture de passage 22. Cette paroi peut être profilée de manière à obtenir le rendement maximal.The
Tel que décrit plus haut, le système selon l'invention comprend en outre une quatrième zone 17 présentant une ouverture d'admission 18 d'un quatrième flux provenant de la pièce. Cette quatrième zone 17 comprend en outre une ouverture de passage 26 du quatrième flux vers la zone tertiaire 15. Le système comprend en outre des moyens d'aspiration 17, par exemple un ventilateur, disposés au niveau de l'ouverture de passage 26 et favorisant le passage du quatrième flux de la quatrième zone vers la zone tertiaire 15.As described above, the system according to the invention further comprises a
Les moyens d'admission 19 permettent à l'utilisateur de faire varier directement ou indirectement :
- la vitesse d'admission du flux primaire dans la
zone primaire 11 ; - la vitesse du flux primaire arrivant vers l'ouverture de
passage 22 ; - la vitesse de passage du flux primaire par l'ouverture de
passage 22 ; - l'effet venturi créé par le passage du flux primaire par l'ouverture de
passage 22 ; - la vitesse d'admission du flux secondaire dans
la zone secondaire 13 ; - la diffusion du flux tertiaire dans l'enceinte.
- the rate of admission of the primary flow in the
primary zone 11; - the speed of the primary flow arriving towards the
passage opening 22; - the speed of passage of the primary flow through the
passage opening 22; - the venturi effect created by the passage of the primary flow through the
passage opening 22; - the rate of admission of the secondary flow in the
secondary zone 13; - the diffusion of tertiary flux in the enclosure.
Ainsi, les moyens de d'admission 19 permettant de faire varier la composition du flux tertiaire en faisant varier les proportions du flux primaire et secondaire qui se mélange au niveau de la zone tertiaire. Ils permettent aussi de créer soit une dépression soit une surpression dans l'enceinte. Lorsque l'enceinte est une chambre d'hôpital, le système selon l'invention permet :
- de créer et maintenir une surpression dans la chambre pour réaliser un confinement d'un patient par rapport à l'extérieur dans le cas par exemple de pathologies immunodéficientes ; ou
- de créer et maintenir une dépression dans la chambre pour réaliser un confinement extérieur par rapport à un patient, dans le cas par exemple de pathologies très contagieuse.
- to create and maintain an overpressure in the chamber to achieve a confinement of a patient with respect to the outside in the case for example of immunodeficient diseases; or
- to create and maintain a depression in the chamber to achieve an external confinement with respect to a patient, in the case for example of highly contagious pathologies.
Ainsi, grâce aux moyens de d'admission 19, l'utilisateur dispose d'un moyen de contrôle de la pression dans l'enceinte.Thus, thanks to the admission means 19, the user has a means for controlling the pressure in the chamber.
Par ailleurs, en faisant varier le fonctionnement des moyens de ventilation 27 disposés au niveau de l'ouverture de passage 26 du quatrième flux, l'utilisateur a la possibilité de faire varier la proportion du quatrième flux se mélangeant au flux primaire et secondaire et donc de réguler de manière plus fine la composition du flux tertiaire diffusé dans l'enceinte.Furthermore, by varying the operation of the ventilation means 27 arranged at the passage opening 26 of the fourth flow, the user has the possibility of varying the proportion of the fourth flow mixing with the primary and secondary flow and thus regulate more finely the composition of the tertiary flux diffused into the enclosure.
En outre, les moyens de traitement thermique 20 permettent de réguler la température du flux primaire et donc du flux tertiaire diffusé dans l'enceinte, pour :
- soit chauffer l'enceinte ;
- soit refroidir l'enceinte.
- either heat the enclosure;
- to cool the enclosure.
Le flux primaire peut ne pas être traité thermiquement auquel cas le système selon l'invention permet de réaliser une ventilation de l'enceinte ou simplement un renouvellement de l'air de l'enceinte.The primary flow may not be heat treated in which case the system according to the invention allows for ventilation of the enclosure or simply a renewal of the air enclosure.
Avantageusement, l'ouverture d'admission 14 du flux secondaire dans la zone secondaire 13 se trouve à proximité de l'ouverture de diffusion 16 du flux tertiaire dans l'enceinte. L'ouverture d'admission 18 du quatrième flux se trouve entre les ouvertures d'admission 14 du flux secondaire. L'ouverture de diffusion 16 du flux tertiaire se trouve au dessus des ouvertures d'admission 14 et 18 sur toute la largeur du système. Cette disposition permet de réaliser un système de dimensions réduites et donc peu encombrant.Advantageously, the inlet opening 14 of the secondary flow in the
Le flux primaire peut avoir subi un prétraitement quelconque par un dispositif de traitement avant d'être amené à proximité ou dans l'enceinte au moyen d'un réseau de conduit ou de gaine. Ce prétraitement peut être un traitement thermique réalisé par une pompe à chaleur. La température du flux primaire arrivant à l'ouverture d'admission 12 du système peut être constante, à une température se situant entre 8 et 35°C.The primary stream may have undergone any pretreatment by a treatment device before being brought into proximity or into the enclosure by means of a conduit or duct network. This pretreatment may be a heat treatment carried out by a heat pump. The temperature of the primary stream arriving at the inlet opening 12 of the system can be constant at a temperature between 8 and 35 ° C.
Les chemins des différents flux sont montrés schématiquement par des flèches pleines sur les
La
Les
Tel que représenté sur les figures, l'ouverture d'admission du flux secondaire, et l'ouverture de diffusion du flux tertiaire se trouvent sur une même face du système selon l'invention. Une telle disposition permet de faciliter, la mise en place du système selon l'invention, par exemple au dessus d'une porte, de façon totalement ou partiellement encastrée. Par ailleurs, une telle disposition de ces ouvertures permet d'utiliser une seule grille pour les deux ouvertures. En outre, l'effet venturi créé par la diffusion du flux tertiaire dans la pièce est optimisé et l'admission du flux secondaire est ainsi facilitée.As shown in the figures, the inlet opening of the secondary flow, and the diffusion opening of the tertiary flow are on the same face of the system according to the invention. Such an arrangement facilitates the implementation of the system according to the invention, for example above a door, totally or partially recessed. Moreover, such an arrangement of these openings makes it possible to use a single grid for the two openings. In addition, the venturi effect created by the diffusion of the tertiary flow in the room is optimized and the admission of the secondary flow is thus facilitated.
Le système selon l'invention met en oeuvre une double induction interne : l'une au niveau de l'ouverture de passage 24 et l'autre au niveau de l'ouverture de passage 26. Ainsi, il permet de traiter 1 à 3 volumes d'air provenant de l'enceinte (flux secondaire et quatrième flux) pour 1 volume d'air primaire (flux primaire). De plus, en utilisant un flux primaire à basse température, autour par exemple de 8°C, et à moyenne ou haute vitesse, il permet, d'une part, une importante induction, et, d'autre part, de réduire les dimensions des gaines du réseau de distribution du flux primaire. Ce qui a pour résultat une économie d'énergie de 10 à 15 % par rapport aux systèmes de diffusion d'air actuellement existants. Tel que nous avons décrit ci-dessus, le système selon l'invention permet de gérer :
- la ventilation d'une enceinte,
- la température de l'enceinte, et
- la pression de l'enceinte
- the ventilation of an enclosure,
- the temperature of the enclosure, and
- the pressure of the speaker
De plus, le système selon l'invention est très hygiénique car il ne présente aucune zone morte où pourraient se développer des germes ou des condensats.In addition, the system according to the invention is very hygienic because it has no dead zone where could develop germs or condensates.
Par ailleurs, le système décrit ci-dessus peut être mis en oeuvre dans une installation de diffusion d'air. Une telle installation peut comprendre une pompe à chaleur fournissant un flux primaire traité thermiquement à plusieurs systèmes de diffusion d'air se trouvant chacun dans une enceinte, au moyen d'un réseau de gaines de distribution du flux primaire. La température du flux primaire fourni aux systèmes de diffusion d'air peut être constante, chacun des systèmes permettant ensuite de réguler indépendamment la température du flux tertiaire diffusé dans l'enceinte. La régulation de la température de diffusion d'air dans chaque enceinte peut être réalisée grâce à un module électronique de contrôle. Ce module électronique de contrôle peut aussi permettre de contrôler et de réguler le débit des différents flux pour réaliser une dépression ou une surpression dans l'enceinte tel que décrit plus haut.Moreover, the system described above can be implemented in an air diffusion installation. Such an installation may comprise a heat pump supplying a heat-treated primary stream to a plurality of air diffusion systems each located in an enclosure, by means of a network of primary flow distribution ducts. The temperature of the primary flow supplied to the air diffusion systems can be constant, each of the systems then making it possible to independently regulate the temperature of the tertiary flux diffused in the enclosure. The regulation of the air diffusion temperature in each chamber can be achieved by means of an electronic control module. This electronic control module can also make it possible to control and regulate the flow rate of the different flows in order to produce a vacuum or an overpressure in the enclosure as described above.
Chaque module de contrôle et de régulation peut être relié à un module central de supervision. Ce module central de supervision peut acquérir les données de fonctionnement de chacun des systèmes de diffusion grâce à une communication avec les modules de contrôle et de supervision associé à chacun d'eux. Il peut aussi modifier à distance le fonctionnement de chacun des systèmes de diffusion, de manière individuel, en agissant sur les modules de contrôle associé.Each control and regulation module can be connected to a central supervision module. This central supervision module can acquire the operating data of each of the broadcasting systems through communication with the control and supervision modules associated with each of them. It can also remotely modify the operation of each of the broadcasting systems, individually, by acting on the associated control modules.
Le paramétrage de chacun des systèmes peut se faire par tout moyen comme par exemple au moyen informatique ou de télécommunication, comme par exemple un Pocket PC, connecté par liaison Bluetooth à chaque module de contrôle et de régulation.The configuration of each of the systems can be done by any means such as for example by means of computer or telecommunications, such as a Pocket PC, connected by Bluetooth connection to each control and regulation module.
Le module central de supervision peut être connecté à un écran tactile. La supervision peut se faire par connexion TCP/IP permettant ainsi d'utiliser un réseau existant dans l'enceinte.The central supervision module can be connected to a touch screen. The supervision can be done over a TCP / IP connection, thus making it possible to use an existing network in the enclosure.
Claims (17)
- A system for the distribution of air in an enclosure, presented in the form of a monoblock assembly, said system comprising:- a zone (11), called primary zone, having an opening (12) in said primary zone (11) for the intake of an airflow, called primary airflow,- a zone (13), called secondary zone, having an opening (14), in said secondary zone (13), for the intake of an airflow, called secondary airflow, originating from said enclosure,- a zone (15), called tertiary zone, into which said primary (11) and secondary (13) zones open, and- means for mixing said primary and secondary flows, supplying an airflow, called tertiary airflow, distributed in said enclosure through an opening (16), called distribution opening, of said tertiary zone (15);characterized in that:- said opening (14) for the intake of the secondary flow is arranged below said opening (16) for the distribution of the tertiary flow, so that the distribution of the tertiary flow in the enclosure creates an induction effect promoting the intake of the secondary flow into the secondary zone (13);- said opening (12) for the intake of the primary flow is provided opposite said openings (14, 16) for the intake of the secondary flow and distribution of the tertiary flow; and- said distribution and intake openings (16, 12, 14) are oriented in such a way that the distribution of the tertiary flow in said enclosure is carried out in a direction parallel to the direction of intake of the primary airflow in said primary zone (11) and to the direction of intake of the secondary flow in said secondary zone (13).
- The system according to claim 1, characterized in that it is presented in the form of a monoblock drawer or of a monoblock rack provided in order to be inserted into a housing or a slot.
- The system according to claim 2, characterized in that the housing or the slot contains a thermal and/or acoustic cover.
- The system according to any one of claims 1 to 3, characterized in that the mixing means comprise a wall (21) between the primary zone (11) and the tertiary zone (15), through which the primary flow passes, and producing a mixture of the primary and secondary flow by the Venturi effect under the action of the passage speed of the primary flow.
- The system according to claim 4, characterized in that the wall comprises a part having a hollow shape (22), called primary passage opening, through which the primary flow passes, in order to pass from the primary zone (11) to the tertiary zone (15), the cross section of said hollow shape (22) progressively reducing between an upstream end (22a) situated on the side of the primary zone (11) and a downstream end (22b) situated on the side of the tertiary zone (15) so that the passage of said primary flow through said hollow shape (22) creates a Venturi effect in the tertiary zone (15) at the level of said downstream end (22b).
- The system according to claim 5, characterized in that the secondary flow passes from the secondary zone (13) to the tertiary zone (15) via a passage opening (24), called secondary passage opening, located close to the downstream end (22b) of the hollow shape (22), so that the Venturi effect created promotes the passage of the secondary flow from the secondary zone (13) to the tertiary zone (15).
- The system according to claim 6, characterized in that the secondary passage opening (24) is formed by a wall (25) which extends substantially parallel to one of the lateral walls of the hollow shape (22).
- The system according to any one of claims 4 to 7, characterized in that the wall contains a plurality of passage openings (23), through which the primary flow passes when said primary flow passes from the primary zone (11) to the tertiary zone (15), each of said openings having a substantially frustoconical shape, the larger cross section of said frustoconical shape being located on the side of the primary zone (11) and the smaller cross section of the frustoconical shape being located on the side of the tertiary zone (15).
- The system according to any one of the preceding claims, characterized in that it comprises a fourth zone (17) having an opening (18) for the intake of a fourth flow originating from the enclosure.
- The system according to claim 9, characterized in that it comprises an opening (26) for the passage of the fourth flow from the fourth zone (17) to the tertiary zone (15) in order to mix with the primary and secondary flows, the tertiary flow then being composed of the primary and secondary flows and the fourth flow.
- The system according to claim 10, characterized in that it comprises ventilation means (27) arranged at the level of the opening (26) for passage of the fourth flow promoting the passage of the fourth flow from the fourth zone (17) to the tertiary zone (15).
- The system according to any one of claims 9 to 11, characterized in that the opening (18) for the intake of the fourth flow is located close to the opening (16) for the distribution of the tertiary flow, so that the distribution of the tertiary flow in the enclosure creates an induction effect promoting the intake of the fourth flow into the fourth zone (17).
- The system according to any one of the preceding claims, characterized in that it comprises inlet means (19) provided for aspirating the primary flow towards the mixing means.
- The system according to claim 13, characterized in that the inlet means (19) comprise at least one aspiration means and/or a regulation means arranged at the level of the opening (12) for intake of the primary flow.
- The system according to any one of the preceding claims, characterized in that it comprises moreover means (20) for the thermal treatment of the primary flow, arranged between the opening (12) for the intake of the primary flow and the mixing means, and provided for the primary flow to pass therethrough.
- An installation for the distribution of air comprising at least one air distribution system according to any one of the preceding claims.
- The installation according to claim 16, characterized in that the primary flow is treated beforehand using a heat pump device.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0703573A FR2916261B1 (en) | 2007-05-18 | 2007-05-18 | AIR DIFFUSION SYSTEM IN AN ENCLOSURE |
PCT/FR2008/050842 WO2008142348A2 (en) | 2007-05-18 | 2008-05-16 | System for the diffusion of air in a chamber |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2195581A2 EP2195581A2 (en) | 2010-06-16 |
EP2195581B1 true EP2195581B1 (en) | 2018-11-14 |
Family
ID=38740303
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08805789.8A Active EP2195581B1 (en) | 2007-05-18 | 2008-05-16 | System for the diffusion of air in a chamber |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2195581B1 (en) |
FR (1) | FR2916261B1 (en) |
WO (1) | WO2008142348A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3056008B1 (en) * | 2016-09-14 | 2018-10-05 | Oreal | DIPPING ROOM, CLEAN OF REPRODUCING AN ENVIRONMENT, AND METHOD OF IMMERSION |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020062948A1 (en) * | 2000-11-24 | 2002-05-30 | Halton Oy | Supply air terminal device |
FR2817951A1 (en) * | 2000-12-07 | 2002-06-14 | Halton Oy | SUPPLY AIR COLLECTION DEVICE, IN PARTICULAR FOR AIR CONDITIONING FACILITIES |
DE10164733A1 (en) * | 2001-02-02 | 2002-12-19 | Ltg Ag | Ventilation equipment |
GB2384302A (en) * | 2000-11-24 | 2003-07-23 | Halton Oy | Supply air terminal device |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2262009A1 (en) * | 1972-12-19 | 1974-06-27 | Friedrich Mittlmeier | PROCEDURE AND EXECUTION ARRANGEMENT FOR AIR CONDITIONING OF A ROOM |
FR2674943B1 (en) * | 1991-04-08 | 1996-02-09 | Edmond Montaz | DEVICE FOR REGULATING THE TEMPERATURE OF A PREMISES. |
ATE310214T1 (en) * | 1999-03-11 | 2005-12-15 | Adam Bernhardt | METHOD FOR CONTROLLING THE TEMPERATURE OF A HALL AND DEVICE FOR IMPLEMENTING THE METHOD |
-
2007
- 2007-05-18 FR FR0703573A patent/FR2916261B1/en active Active
-
2008
- 2008-05-16 WO PCT/FR2008/050842 patent/WO2008142348A2/en active Application Filing
- 2008-05-16 EP EP08805789.8A patent/EP2195581B1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020062948A1 (en) * | 2000-11-24 | 2002-05-30 | Halton Oy | Supply air terminal device |
GB2384302A (en) * | 2000-11-24 | 2003-07-23 | Halton Oy | Supply air terminal device |
FR2817951A1 (en) * | 2000-12-07 | 2002-06-14 | Halton Oy | SUPPLY AIR COLLECTION DEVICE, IN PARTICULAR FOR AIR CONDITIONING FACILITIES |
DE10164733A1 (en) * | 2001-02-02 | 2002-12-19 | Ltg Ag | Ventilation equipment |
Non-Patent Citations (1)
Title |
---|
"Extrait de la brochure <Diffuseurs d'air Anemostat>", EXTRAIT DE LA BROCHURE <DIFFUSEURS D'AIR ANEMOSTAT>, SOCIÉTÉ ANEMOTHERM, FR, 25 June 1961 (1961-06-25), pages 1 - 3, XP003024390 * |
Also Published As
Publication number | Publication date |
---|---|
WO2008142348A2 (en) | 2008-11-27 |
FR2916261B1 (en) | 2010-03-12 |
FR2916261A1 (en) | 2008-11-21 |
WO2008142348A3 (en) | 2009-02-19 |
EP2195581A2 (en) | 2010-06-16 |
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