EP2933575A1 - Diffusion device with lobe inserts and fan coil comprising such a device - Google Patents

Diffusion device with lobe inserts and fan coil comprising such a device Download PDF

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Publication number
EP2933575A1
EP2933575A1 EP15163641.2A EP15163641A EP2933575A1 EP 2933575 A1 EP2933575 A1 EP 2933575A1 EP 15163641 A EP15163641 A EP 15163641A EP 2933575 A1 EP2933575 A1 EP 2933575A1
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EP
European Patent Office
Prior art keywords
air
insert
fan coil
grid
inserts
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP15163641.2A
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German (de)
French (fr)
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EP2933575B1 (en
Inventor
Pierre Jean Vialle
Eric Leroy
Amina Meslem
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Carrier Corp
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Compagnie Industrielle dApplications Thermiques SA CIAT
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Publication of EP2933575A1 publication Critical patent/EP2933575A1/en
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Publication of EP2933575B1 publication Critical patent/EP2933575B1/en
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    • 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
    • F24F13/26—Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/28—Details or features not otherwise provided for using the Coanda effect

Definitions

  • the invention relates to an air diffusion device having lobed inserts and a fan coil comprising such a device.
  • fan coil units In the field of ventilation, it is known to equip the buildings of ceiling or wall mounted fan coil units to condition and possibly renew the ambient air.
  • the fan coils are distributed throughout the building and each include at least one diffusion device, such as a grill, which distributes conditioned air in the building rooms.
  • diffusion devices such as a grill
  • Room air is drawn in and treated in the fan coil before being ejected into the room. So depending on the needs, heating or cooling, the air is either heated or cooled by the fan coil.
  • the fan coil can also receive fresh air, drawn directly outside or brought by an auxiliary ventilation system. In this case, the outside air is conditioned in the fan coil with air in the room. In cooling mode, the air blown by the fan coil is cooler than the air in the room. It tends to drop to the ground especially as the difference of its temperature with the ambient temperature is important.
  • US-B-6,004,204 discloses an air blast nozzle designed to promote this induction phenomenon.
  • This nozzle is housed in a mixing chamber of an air conditioning unit and optimizes the mixing between a fresh air stream or treated, and a stale air flow extracted from the room.
  • blowing nozzles may be distributed in the width direction of the mixing chamber or a single elongated blow nozzle may be used. This or these nozzles have the particularity of having a trailing edge having a circumference with curves, that is to say having rounded portions.
  • the lobes are arranged in a circle or rectangle.
  • Fan-convectors with a mixing chamber are not suitable for rooms with a large volume since they do not allow to debit air "mixed" sufficient room conditioning.
  • the fact of providing a mixing chamber in the fan coil reduces the compactness of the apparatus.
  • DE-A-1,579,906 discloses an air conditioning device comprising a radiant panel in the form of a corrugated sheet metal plate and two baffles disposed on either side of the plate.
  • the device comprises a plurality of nozzles arranged to distribute air in ducts defined between the radiant panel and a first deflector. Part of the air is then discharged at the longitudinal end of the panel in conduits defined between the panel and the second deflector.
  • the radiant panel allows a particular flow of air within the device, but is not configured to separate an air gap to form a particular external flow promoting mixing with the ambient air.
  • the invention intends to remedy more particularly by providing a diffusion device comprising one or more lobed inserts, which promotes induction, that is to say the mixing of the jet diffused with the air ambient, without the jet losing its reach.
  • the invention relates to a device for diffusing an air jet, comprising at least one insert, which comprises separation lobes, in two differently oriented flows, of an air flow ejected through the device. of diffusion, these lobes delimiting a thin and wavy trailing edge.
  • the device further comprises at least two deflectors disposed on either side of the insert, which define between them an orifice for passage of the air jet around the insert and which guide the jet of air in a predetermined direction.
  • the air flow expelled by the device is separated by the lobes of the insert and the contact surface between the blast air jet and the ambient air is multiplied.
  • the exchange surface between the blown jet and the ambient air is greater than for a blown air jet block.
  • the shearing of the primary fluid by the corrugated trailing edge generates additional longitudinal vortices. These two phenomena increase the mixing of the blown air with the ambient air. This mixture makes it possible to homogenise the temperature of the jet compared to that of the ambient air and the users do not feel the sensation of a cold or hot draft.
  • the baffles direct the jet of air in the predetermined direction, which allows to spread the jet along a wall and enjoy the Coanda effect. The air jet therefore retains a satisfactory range, which prevents the air "falling" too quickly towards users.
  • the invention also relates to a fan coil comprising a diffusion device as described above.
  • a diffusion device 1 which is a grid.
  • the grid 1 is shown from the inside of the room.
  • the grid 1 is adapted to be installed in the upper part of a wall, that is to say near the ceiling.
  • This grid 1 is intended to blow the treated air in a room of a building, that is to say it is a simple flow grid.
  • the grid 1 can be mounted on a fan coil housed in a wall or directly at the end of a duct connected upstream to a fan coil. In the latter case, the grid 1 is a static transmitter and the associated fan coil upstream can diffuse air through several transmitters distributed in the building.
  • the ventilation grid 1 comprises a rectangular frame 2, which is partially shown in FIG. figure 1 and a series of fins 8, which are arranged horizontally in the frame 2 one above the other.
  • the fins 8 are deflectors which direct the air blown through the ventilation grille 1 in a predetermined direction ⁇ , which is turned towards the ceiling. Indeed, as visible at the figure 1 the fins 8 have a bent shape, with a horizontal upstream portion 8a and a downstream portion 8b directed in the direction ⁇ , that is to say upwards.
  • the air blown through the ventilation grid 1 is directed towards the ceiling of the room and takes advantage of the effect "Coanda", which improves the range of the jet.
  • Inserts 10 are arranged between each pair of two adjacent fins 8.
  • the fins 8 thus define between them O10 orifices for passage of the jet of air around the inserts 10.
  • the frame 2 and the fins 8 are partially shown in length for clarity of the drawing.
  • the inserts 10 are attached to two vertical posts 4 and 6 of the frame 2.
  • the inserts 10 have the function of increasing the induction of the air jets passing between the fins 8 of the grid 1.
  • the inserts 10 are arranged slightly in upstream relative to the fins 8 in the flow path of air blown through the grid 1, so that the air blown through the grid 1 is generally directed towards the ceiling and takes advantage of the Coanda effect.
  • the insert 10 extends along a longitudinal axis X10, which is a horizontal direction when the insert is mounted in the ventilation grille 1.
  • the insert 10 comprises two hooks 100 and 102 for attachment to the bars 4 and 6 of the the gate 1.
  • the insert 10 comprises lobes 108 and 110 which are arranged alternately one after the other along the axis X10, that is to say that the lobes 108 and 110 are arranged in line right, or on a segment.
  • the lobes 108 and 110 are rounded portions of the insert 10 which are respectively disposed above and below a median plane P10 of the insert 10.
  • the lobes 108 and 110 each have a concavity turned towards the median plane P10 .
  • the lobes 108 and 110 define a regular and undulating serration along the axis X10. They delimit a trailing edge 106 which is a thin, undulating edge. We are talking about a "lobed" edge.
  • the ripples of the trailing edge 106 are identical and the trailing edge 106 has a thickness e106 constant over the entire length of the insert 10.
  • the thickness e106 is of the order of 1 mm, while the length of the insert 10, which depends on the dimensions of the grid 1, is between 40 and 100 cm.
  • the trailing edge 106 comprises rounded portions 106a and 106b which are respectively disposed above and below the median plane P10.
  • the rounded portions 106a and 106b have an identical radius of curvature and extend over approximately 180 °.
  • the radius of curvature of the portions 106a and 106b is between 1 mm and 10 mm, in particular of the order of 2 mm.
  • the portions 106a and 106b are connected successively to one another by rectilinear portions 106c, which are perpendicular to the median plane P10 and substantially vertical in the installed configuration of the insert 10 in the grid 1.
  • the insert 10 also comprises a leading edge 104, which is rectilinear and extends parallel to the longitudinal axis X10.
  • the plane P10 is a generally horizontal plane in the installed configuration of the grid 1 in the wall. This plane P10 passes through the leading edge 104 and the middle of the rectilinear portions 106c.
  • the air is routed from a ventilation unit to grid 1.
  • the flow of air from the ventilation unit and opening into the grid 1 is symbolized by two arrows F1.
  • the air blown through the grid 1 is cooled or preheated according to the type of packaging selected, that is to say, air conditioning or heating.
  • the air blown through the grid 1 has a large temperature difference with respect to the ambient air.
  • the lobes 108 and 110 each delimit a passage channel of the air flow.
  • the flow of air F1 entering the grid 1 is divided, or separated, by the lobes 108 and 110 of the insert 10.
  • F2 and F3 respectively designate the flow of air flow along the inner wall of the lobes 108 and 110.
  • the "inner" side of the lobes 106 and 108 is defined as the side facing the median plane P10.
  • the air flow F2 in the channels of the lobes 108 are directed upwards while the airflow F3 flows in the channels of the lobes 110 are directed downwards, which allows to separate in two the jet of air ejected through the grid 1.
  • the inserts 10 thus improve the induction of the jet blown through the grid 1, which reduces the temperature difference between the jet blown and the ambient air by about 20%.
  • the jet of air blown through the grid is slowed down by induction because of interactions with the surrounding air, which is why the geometry of the insert 10 actually promotes induction over a short distance, between 5 and 10 cm at the outlet of the grid 1.
  • the speed of the jet is only slightly impacted and the jet retains a satisfactory range.
  • a range of 4 to 5 m is satisfactory since it generally makes it possible to reach an opposite wall of a room in which the grid 1 is installed. In this way, in air conditioning mode, the air does not "fall" too quickly towards the floor with a temperature too cold.
  • this type of insert can also be integrated into a ceiling fan coil 3, shown in FIGS. figures 6 and 8 which is adapted to be housed in a false ceiling 5 of a room.
  • This type of apparatus is commonly referred to as a "diffusion cassette" and has a diffusion slot 30 through which air is blown in a horizontal plane near the ceiling.
  • This diffusion slot is delimited between a plate 322 of a parallelepiped box and a diffuser 34.
  • the diffuser panel 34 is disposed below the box 32.
  • the diffuser panel 34 and the plate 322 are deflectors which guide the air jet blown by the fan coil 3 in a predetermined direction ⁇ .
  • the direction ⁇ is a horizontal direction so that the air diffused by the fan coil 3 "licks" the ceiling.
  • the slot 30 forms a passage opening of the air jet around several inserts 10.
  • the inserts 10 extend along each side of the slot 30.
  • the inserts 10, the diffuser panel 34 and the plate 322 thus form together a diffusion device 1 of the fan coil 3.
  • the diffusion slot 30 is a rectangular peripheral slot.
  • the diffusion slot 30 is U-shaped.
  • figure 6 , F4 and F5 designate two directions of diffusion of an air jet.
  • the inserts 10 are fixed on the upper surface of the panel 34. They comprise fixing lugs 101, which are screwed to the panel 34.
  • the inserts 10 may comprise fastening means for securing them to one another. It is also possible to make a monobloc insert having a U-shaped or rectangular shape depending on the type of cassette used.
  • the grid 1 can be mounted on the ceiling.
  • FIG. 9 and 10 On the Figures 9 and 10 is shown an alternative construction of an insert 10 '.
  • This insert 10 ' is intended to be integrated in a ceiling fan coil as described above. It is partially represented in length on Figures 9 and 10 . It comprises three tabs 101 for fixing to the panel 34 and delimits inclined lobes 110 '. Indeed, unlike lobes 110 of the insert of Figures 1 to 8 , which extend perpendicularly to the longitudinal axis X10 of the insert 10, the lobes 110 'form with an axis Y10 normal to the axis X10 an angle A110 of between -60 ° and + 60 °, in the example equal to 20 °.
  • This angle is measured between the axis Y10 and a direction D110 along which the lobes 110 'extend.
  • the inserts 10 are then able to orient the air jets diffused on the three or on the four sides of the cassette in a mean direction inclined with respect to the directions F4 and F5 which are perpendicular to the sides of the diffuser panel 34.
  • the average direction air jets diffused on the sides of the cassette is thus oriented by the inserts 10 in the diffusion plane of the fan coil 3, which is a horizontal plane. This makes it possible to avoid frontal interaction of the air jets emitted by two cassettes disposed opposite each other and consequently the formation of a cold or hot current resulting from this interaction.
  • the insert 10 also comprises two edges 114 bevelled, that is to say cut at 45 ° with respect to the axis X10 or Y10. This allows four inserts 10 'end to end to form a rectangular frame.
  • the ceiling fan coil 3 comprises means for orienting the inserts 10 in a horizontal plane.
  • these means may comprise a movable support serving as a pivot for orienting the inserts 10 over a range of angles ranging from -60 ° to + 60 ° with respect to an axis normal to one side of the panel 34.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Air-Flow Control Members (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Dispositif de diffusion (1) d'un jet d'air, comprenant au moins un insert, qui comprend des lobes de séparation, en deux flux orientés différemment, d'un flux d'air éjecté à travers le dispositif de diffusion, ces lobes délimitant un bord de fuite mince et ondulé. Il comprend, en outre, au moins deux déflecteurs (8) disposés de part et d'autre de l'insert (10), qui définissent entre eux un orifice (O10) de passage du jet d'air autour de l'insert et qui guident le jet d'air selon une direction prédéterminée.Device for diffusing (1) an air jet, comprising at least one insert, which comprises separation lobes, in two differently oriented flows, of an air flow ejected through the diffusion device, these lobes delimiting a thin, wavy trailing edge. It further comprises at least two deflectors (8) disposed on either side of the insert (10), which define between them an orifice (O10) for passage of the air jet around the insert and which guide the jet of air in a predetermined direction.

Description

L'invention concerne un dispositif de diffusion d'air ayant des inserts lobés et un ventilo-convecteur comprenant un tel dispositif.The invention relates to an air diffusion device having lobed inserts and a fan coil comprising such a device.

Dans le domaine de la ventilation, il est connu d'équiper les bâtiments de ventilo-convecteurs plafonniers ou muraux pour conditionner et éventuellement renouveler l'air ambiant. Les ventilo-convecteurs sont répartis dans le bâtiment et incluent chacun au moins un dispositif de diffusion, tel qu'une grille, qui diffuse de l'air conditionné dans les pièces du bâtiment. Ces grilles sont en pratique fixées en partie supérieure des murs.In the field of ventilation, it is known to equip the buildings of ceiling or wall mounted fan coil units to condition and possibly renew the ambient air. The fan coils are distributed throughout the building and each include at least one diffusion device, such as a grill, which distributes conditioned air in the building rooms. These grilles are in practice fixed in the upper part of the walls.

L'air de la pièce est aspiré et traité dans le ventilo-convecteur avant d'être éjecté dans la pièce. Ainsi en fonction des besoins, de chauffage ou de rafraichissement, l'air est soit chauffé, soit refroidi par le ventilo-convecteur. En plus de l'air aspiré dans la pièce, le ventilo-convecteur peut aussi recevoir de l'air neuf, puisé directement à l'extérieur ou bien amené par un système de ventilation annexe. Dans ce cas, l'air extérieur est conditionné dans le ventilo-convecteur avec l'air repris dans la pièce. En mode rafraichissement, l'air soufflé par le ventilo-convecteur est plus froid que l'air de la pièce. Il a tendance à chuter vers le sol d'autant plus que l'écart de sa température avec la température ambiante est important.Room air is drawn in and treated in the fan coil before being ejected into the room. So depending on the needs, heating or cooling, the air is either heated or cooled by the fan coil. In addition to the air sucked into the room, the fan coil can also receive fresh air, drawn directly outside or brought by an auxiliary ventilation system. In this case, the outside air is conditioned in the fan coil with air in the room. In cooling mode, the air blown by the fan coil is cooler than the air in the room. It tends to drop to the ground especially as the difference of its temperature with the ambient temperature is important.

Il importe donc de diminuer au maximum cet écart de température pour éviter les courants d'air froid nuisibles au confort des personnes.It is therefore important to minimize this temperature difference to avoid cold drafts harmful to the comfort of people.

La publication « Lobed grilles for high mixing ventilation - An expérimental analysis in a full scale model room » de Ilinca Nastase, Amina Meslem, Jordache Vlad et lolanda Colda, publiée dans le journal « Building and Environment » (46 (2011) 547-555), édition ELSEVIER , divulgue une grille de diffusion comprenant des ailettes lobées, qui délimitent un bord de fuite mince et ondulé et favorisent le mélange de l'air soufflé avec l'air ambiant. Cependant, le jet d'air soufflé à travers la grille ne profite pas de l'effet Coanda qui tend à plaquer le jet d'air contre le plafond et augmente la portée du jet. En effet, le jet d'air diffusé par la grille n'est pas dirigé vers le plafond. Ainsi, ce jet a une faible portée et retombe rapidement vers le sol du fait de la différence de température avec l'air ambiant. Les usagers de la pièce ressentent donc un courant d'air froid.The publication Ilinca Nastase's Lobed grids for high mixing ventilation, Jordache Vlad and lolanda Colda, published in the journal Building and Environment (46 (2011) 547-555), ELSEVIER edition , discloses a diffusion grid comprising lobed vanes, which delimit a thin and wavy trailing edge and promote the mixing of the blown air with the ambient air. However, the jet of air blown through the grid does not benefit from the Coanda effect which tends to press the air jet against the ceiling and increases the range of the jet. Indeed, the jet of air diffused by the grid is not directed towards the ceiling. Thus, this jet has a short range and falls quickly to the ground because of the temperature difference with the ambient air. Users of the room therefore feel a cold draft.

Par ailleurs, US-B-6 004 204 divulgue une buse de soufflage d'air conçue pour favoriser ce phénomène d'induction. Cette buse est logée dans une chambre de mélange d'une unité de conditionnement d'air et permet d'optimiser le mélange entre un flux d'air neuf ou traité, et un flux d'air vicié extrait de la pièce. Plusieurs buses de soufflage peuvent être réparties dans le sens de la largeur de la chambre de mélange ou une seule buse de soufflage allongée peut être utilisée. Cette ou ces buses ont la particularité de comporter un bord de fuite ayant un pourtour avec des courbes, c'est-à-dire ayant des portions arrondies. Dans ce document, les lobes sont agencés en cercle ou en rectangle.Otherwise, US-B-6,004,204 discloses an air blast nozzle designed to promote this induction phenomenon. This nozzle is housed in a mixing chamber of an air conditioning unit and optimizes the mixing between a fresh air stream or treated, and a stale air flow extracted from the room. Several blowing nozzles may be distributed in the width direction of the mixing chamber or a single elongated blow nozzle may be used. This or these nozzles have the particularity of having a trailing edge having a circumference with curves, that is to say having rounded portions. In this document, the lobes are arranged in a circle or rectangle.

Les ventilo-convecteurs comportant une chambre de mélange ne sont pas adaptés aux pièces avec un grand volume puisqu'ils ne permettent pas de débiter un air « mélangé » suffisant au conditionnement de la pièce. En outre, le fait de prévoir une chambre de mélange dans le ventilo-convecteur diminue la compacité de l'appareil.Fan-convectors with a mixing chamber are not suitable for rooms with a large volume since they do not allow to debit air "mixed" sufficient room conditioning. In addition, the fact of providing a mixing chamber in the fan coil reduces the compactness of the apparatus.

Enfin, DE-A-1 579 906 divulgue un dispositif de conditionnement d'air comprenant un panneau radiant ayant la forme d'une plaque de tôle ondulée et deux déflecteurs disposés de part et d'autre de la plaque. Le dispositif comprend plusieurs buses agencées pour diffuser de l'air dans des conduits définis entre le panneau radiant et un premier déflecteur. Une partie de l'air est ensuite refoulée à l'extrémité longitudinale du panneau dans des conduits définis entre le panneau et le deuxième déflecteur. Le panneau radiant permet une circulation particulière de l'air à l'intérieur du dispositif, mais n'est pas configuré pour séparer une lame d'air afin de former un écoulement externe particulier favorisant le mélange avec l'air ambiant.Finally, DE-A-1,579,906 discloses an air conditioning device comprising a radiant panel in the form of a corrugated sheet metal plate and two baffles disposed on either side of the plate. The device comprises a plurality of nozzles arranged to distribute air in ducts defined between the radiant panel and a first deflector. Part of the air is then discharged at the longitudinal end of the panel in conduits defined between the panel and the second deflector. The radiant panel allows a particular flow of air within the device, but is not configured to separate an air gap to form a particular external flow promoting mixing with the ambient air.

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un dispositif de diffusion comprenant un ou plusieurs inserts lobés, qui favorise l'induction, c'est-à-dire le mélange du jet diffusé avec l'air ambiant, sans que le jet perde de sa portée.It is these drawbacks that the invention intends to remedy more particularly by providing a diffusion device comprising one or more lobed inserts, which promotes induction, that is to say the mixing of the jet diffused with the air ambient, without the jet losing its reach.

A cet effet l'invention concerne un dispositif de diffusion d'un jet d'air, comprenant au moins un insert, qui comprend des lobes de séparation, en deux flux orientés différemment, d'un flux d'air éjecté à travers le dispositif de diffusion, ces lobes délimitant un bord de fuite mince et ondulé. Conformément à l'invention, le dispositif comprend, en outre, au moins deux déflecteurs disposés de part et d'autre de l'insert, qui définissent entre eux un orifice de passage du jet d'air autour de l'insert et qui guident le jet d'air selon une direction prédéterminée.For this purpose, the invention relates to a device for diffusing an air jet, comprising at least one insert, which comprises separation lobes, in two differently oriented flows, of an air flow ejected through the device. of diffusion, these lobes delimiting a thin and wavy trailing edge. According to the invention, the device further comprises at least two deflectors disposed on either side of the insert, which define between them an orifice for passage of the air jet around the insert and which guide the jet of air in a predetermined direction.

Grâce à l'invention, le flux d'air expulsé par le dispositif est séparé par les lobes de l'insert et la surface de contact entre le jet d'air soufflé et l'air ambiant est démultipliée. Ainsi, la surface d'échange entre le jet soufflé et l'air ambiant est plus importante que pour un jet d'air soufflé en bloc. De plus, le cisaillement du fluide primaire par le bord de fuite ondulé génère des tourbillons longitudinaux supplémentaires. Ces deux phénomènes augmentent le mélange de l'air soufflé avec l'air ambiant. Ce mélange permet d'homogénéiser la température du jet par rapport à celle de l'air ambiant et les utilisateurs ne ressentent pas la sensation d'un courant d'air froid ou chaud. En outre, les déflecteurs orientent le jet d'air dans la direction prédéterminée, ce qui permet de diffuser le jet le long d'une paroi et de profiter de l'effet Coanda. Le jet d'air conserve donc une portée satisfaisante, ce qui permet d'éviter que l'air « chute » trop rapidement en direction des usagers.Thanks to the invention, the air flow expelled by the device is separated by the lobes of the insert and the contact surface between the blast air jet and the ambient air is multiplied. Thus, the exchange surface between the blown jet and the ambient air is greater than for a blown air jet block. In addition, the shearing of the primary fluid by the corrugated trailing edge generates additional longitudinal vortices. These two phenomena increase the mixing of the blown air with the ambient air. This mixture makes it possible to homogenise the temperature of the jet compared to that of the ambient air and the users do not feel the sensation of a cold or hot draft. In addition, the baffles direct the jet of air in the predetermined direction, which allows to spread the jet along a wall and enjoy the Coanda effect. The air jet therefore retains a satisfactory range, which prevents the air "falling" too quickly towards users.

Selon des aspects avantageux mais non obligatoires de l'invention, un dispositif de diffusion peut comporter une ou plusieurs des caractéristiques suivantes, prises dans toute combinaison techniquement admissible :

  • Le dispositif est une grille de diffusion, adaptée pour être montée sur une paroi, alors que les déflecteurs sont des ailettes appartenant à la grille.
  • Chaque insert est disposé en amont par rapport aux ailettes sur le trajet d'écoulement de jet d'air diffusé par la grille.
  • Les ailettes sont coudées et comportent une partie aval qui s'étend selon la direction prédéterminée.
  • Les inserts comprennent des moyens d'attache à deux poteaux de la grille.
  • Les deux déflecteurs sont formés par un panneau diffuseur et une plaque, adaptés pour être montés sur un ventilo-convecteur plafonnier.
  • Le panneau diffuseur et la plaque sont agencés pour diffuser le jet d'air dans trois ou quatre directions prédéterminées qui sont coplanaires.
  • Chaque insert comprend des moyens de fixation au panneau diffuseur.
  • Les moyens de fixation au panneau diffuseur sont des pattes de fixation, adaptées pour être vissées au panneau.
  • Les lobes de l'insert s'étendent chacun selon une direction inclinée par rapport à un axe normal à un axe longitudinal de l'insert.
According to advantageous but non-mandatory aspects of the invention, a broadcasting device may include one or more of the following features, taken in any technically permissible combination:
  • The device is a diffusion grid, adapted to be mounted on a wall, while the baffles are fins belonging to the grid.
  • Each insert is disposed upstream with respect to the fins in the air jet flow path diffused by the grid.
  • The fins are bent and have a downstream portion which extends in the predetermined direction.
  • The inserts comprise two-pole attachment means of the grid.
  • The two deflectors are formed by a diffuser panel and a plate, adapted to be mounted on a ceiling fan coil.
  • The diffuser panel and the plate are arranged to diffuse the jet of air in three or four predetermined directions which are coplanar.
  • Each insert comprises fastening means to the diffuser panel.
  • The fixing means to the diffuser panel are fastening lugs, adapted to be screwed to the panel.
  • The lobes of the insert each extend in a direction inclined relative to an axis normal to a longitudinal axis of the insert.

L'invention concerne également un ventilo-convecteur comprenant un dispositif de diffusion tel que décrit précédemment.The invention also relates to a fan coil comprising a diffusion device as described above.

Selon des aspects avantageux mais non obligatoires de l'invention, le ventilo-convecteur peut comporter une ou plusieurs des caractéristiques suivantes, prises dans toute combinaison techniquement admissible :

  • Le ventilo convecteur est un ventilo-convecteur plafonnier comprenant un dispositif tel que décrit précédemment et des moyens pour orienter les inserts dans un plan de diffusion horizontal du ventilo-convecteur.
  • Un angle d'orientation des inserts dans le plan horizontal est compris entre -60 et +60° par rapport à un axe normal à un côté du panneau diffuseur.
  • L'angle d'orientation des inserts dans le plan horizontal est ajustable au moyen d'un support mobile
According to advantageous but non-mandatory aspects of the invention, the fan coil may comprise one or more of the following features, taken in any technically permissible combination:
  • The fan coil is a ceiling fan coil comprising a device as described above and means for orienting the inserts in a horizontal diffusion plane of the fan coil.
  • An orientation angle of the inserts in the horizontal plane is between -60 and + 60 ° with respect to an axis normal to one side of the diffuser panel.
  • The angle of orientation of the inserts in the horizontal plane is adjustable by means of a movable support

L'invention sera mieux comprise et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre, de deux modes de réalisation d'un dispositif de diffusion conforme à son principe, donnée uniquement à titre d'exemple et faite en référence aux dessins dans lesquels :

  • la figure 1 est une vue partielle en perspective d'un dispositif de diffusion comportant plusieurs ailettes, entre lesquelles sont disposés des inserts,
  • la figure 2 est une vue en perspective et à plus grande échelle d'un insert de la grille de la figure 1,
  • la figure 3 est une vue selon la flèche III à la figure 2,
  • la figure 4 est une vue selon la flèche IV à la figure 3,
  • la figure 5 est une coupe partielle selon le plan V à la figure 1,
  • la figure 6 est une vue partielle en perspective d'un ventilo-convecteur plafonnier, comportant un dispositif de diffusion selon un deuxième mode de réalisation de l'invention,
  • la figure 7 est une vue à plus grande échelle de l'encerclé VII de la figure 6,
  • la figure 8 est une coupe selon le plan VIII de la figure 7, dans laquelle le ventilo-convecteur est schématiquement représenté en configuration installée dans un faux-plafond,
  • la figure 9 est une vue analogue à la figure 3 représentant une variante de réalisation d'un insert, adapté pour être fixé dans le ventilo-convecteur de la figure 6,
  • la figure 10 est une vue en élévation par rapport à la figure 9.
The invention will be better understood and other advantages thereof will appear more clearly in the light of the description which follows, of two embodiments of a broadcasting device according to its principle, given solely as a example and with reference to the drawings in which:
  • the figure 1 is a partial perspective view of a diffusion device comprising a plurality of fins, between which are arranged inserts,
  • the figure 2 is a perspective view and on a larger scale of an insert of the grid of the figure 1 ,
  • the figure 3 is a view according to arrow III at figure 2 ,
  • the figure 4 is a view along arrow IV at the figure 3 ,
  • the figure 5 is a partial section along plane V at the figure 1 ,
  • the figure 6 is a partial perspective view of a ceiling fan coil, comprising a diffusion device according to a second embodiment of the invention,
  • the figure 7 is a larger-scale view of circled VII from the figure 6 ,
  • the figure 8 is a section according to plan VIII of the figure 7 , in which the fan coil is schematically shown in configuration installed in a false ceiling,
  • the figure 9 is a view similar to the figure 3 representing an alternative embodiment of an insert, adapted to be fixed in the fan coil of the figure 6 ,
  • the figure 10 is an elevation view from the figure 9 .

Sur la figure 1 est représenté un dispositif de diffusion 1, qui est une grille. A la figure 1, la grille 1 est représentée vue de l'intérieur de la pièce. En pratique, la grille 1 est adaptée pour être installée dans la partie supérieure d'un mur, c'est-à-dire à proximité du plafond. Cette grille 1 est prévue pour souffler de l'air traité dans une pièce d'un bâtiment, c'est-à-dire que c'est une grille simple flux. La grille 1 peut être montée sur un ventilo-convecteur logé dans une paroi ou directement à l'extrémité d'une gaine raccordée en amont à un ventilo-convecteur. Dans ce dernier cas, la grille 1 est un émetteur statique et le ventilo-convecteur associé en amont peut diffuser de l'air à travers plusieurs émetteurs répartis dans le bâtiment.On the figure 1 is shown a diffusion device 1, which is a grid. To the figure 1 , the grid 1 is shown from the inside of the room. In practice, the grid 1 is adapted to be installed in the upper part of a wall, that is to say near the ceiling. This grid 1 is intended to blow the treated air in a room of a building, that is to say it is a simple flow grid. The grid 1 can be mounted on a fan coil housed in a wall or directly at the end of a duct connected upstream to a fan coil. In the latter case, the grid 1 is a static transmitter and the associated fan coil upstream can diffuse air through several transmitters distributed in the building.

Dans ce document, les directions « haut », « bas », « supérieure » et « inférieure » doivent être interprétées par rapport à une configuration installée de la grille 1 dans le mur.In this document, the "up", "down", "top" and "bottom" directions must be interpreted in relation to an installed grid 1 configuration in the wall.

La grille de ventilation 1 comprend un cadre rectangulaire 2, qui est représenté partiellement à la figure 1 et une série d'ailettes 8, qui sont disposées horizontalement dans le cadre 2 les unes au dessus des autres. Les ailettes 8 sont des déflecteurs qui permettent de diriger l'air soufflé à travers la grille de ventilation 1 selon une direction prédéterminée Δ, qui est tournée vers le plafond. En effet, comme visible à la figure 1, les ailettes 8 présentent une forme coudée, avec une partie amont 8a horizontale et une partie aval 8b dirigée selon la direction Δ, c'est à dire vers le haut. Ainsi, l'air soufflé à travers la grille de ventilation 1 est dirigé en direction du plafond de la pièce et profite de l'effet « Coanda », qui améliore la portée du jet.The ventilation grid 1 comprises a rectangular frame 2, which is partially shown in FIG. figure 1 and a series of fins 8, which are arranged horizontally in the frame 2 one above the other. The fins 8 are deflectors which direct the air blown through the ventilation grille 1 in a predetermined direction Δ, which is turned towards the ceiling. Indeed, as visible at the figure 1 the fins 8 have a bent shape, with a horizontal upstream portion 8a and a downstream portion 8b directed in the direction Δ, that is to say upwards. Thus, the air blown through the ventilation grid 1 is directed towards the ceiling of the room and takes advantage of the effect "Coanda", which improves the range of the jet.

Des inserts 10 sont disposés entre chaque paire de deux ailettes adjacentes 8. Les ailettes 8 définissent donc entre elles des orifices O10 de passage du jet d'air autour des inserts 10. Sur la figure 1, les inserts 10, le cadre 2 et les ailettes 8 sont représentés partiellement en longueur pour la clarté du dessin. Les inserts 10 sont attachés sur deux poteaux verticaux 4 et 6 du cadre 2. Les inserts 10 ont pour fonction d'augmenter l'induction des jets d'air passant entre les ailettes 8 de la grille 1. Les inserts 10 sont disposés légèrement en amont par rapport aux ailettes 8 sur le trajet d'écoulement d'air soufflé à travers la grille 1, de manière que l'air soufflé à travers la grille 1 est globalement dirigé vers le plafond et profite de l'effet Coanda.Inserts 10 are arranged between each pair of two adjacent fins 8. The fins 8 thus define between them O10 orifices for passage of the jet of air around the inserts 10. On the figure 1 the inserts 10, the frame 2 and the fins 8 are partially shown in length for clarity of the drawing. The inserts 10 are attached to two vertical posts 4 and 6 of the frame 2. The inserts 10 have the function of increasing the induction of the air jets passing between the fins 8 of the grid 1. The inserts 10 are arranged slightly in upstream relative to the fins 8 in the flow path of air blown through the grid 1, so that the air blown through the grid 1 is generally directed towards the ceiling and takes advantage of the Coanda effect.

Sur la figure 2 est représenté plus en détail un insert 10. Dans la suite de la description seul un insert 10 est décrit puisque les inserts 10 sont tous identiques.On the figure 2 is shown in more detail an insert 10. In the following description only an insert 10 is described since the inserts 10 are all identical.

L'insert 10 s'étend selon un axe longitudinal X10, qui est une direction horizontale lorsque l'insert est monté dans la grille de ventilation 1. L'insert 10 comprend deux crochets 100 et 102 d'attache aux barres 4 et 6 de la grille 1. L'insert 10 comporte des lobes 108 et 110 qui sont disposés alternativement les uns à la suite des autres le long de l'axe X10, c'est-à-dire que les lobes 108 et 110 sont agencés en ligne droite, ou sur un segment. Les lobes 108 et 110 sont des portions arrondies de l'insert 10 qui sont disposées respectivement au dessus et en dessous d'un plan médian P10 de l'insert 10. Les lobes 108 et 110 ont chacun une concavité tournée vers le plan médian P10.The insert 10 extends along a longitudinal axis X10, which is a horizontal direction when the insert is mounted in the ventilation grille 1. The insert 10 comprises two hooks 100 and 102 for attachment to the bars 4 and 6 of the the gate 1. The insert 10 comprises lobes 108 and 110 which are arranged alternately one after the other along the axis X10, that is to say that the lobes 108 and 110 are arranged in line right, or on a segment. The lobes 108 and 110 are rounded portions of the insert 10 which are respectively disposed above and below a median plane P10 of the insert 10. The lobes 108 and 110 each have a concavity turned towards the median plane P10 .

Les lobes 108 et 110 définissent une dentelure régulière et ondulée le long de l'axe X10. Ils délimitent un bord de fuite 106 qui est un bord mince et ondulé. On parle d'un bord « lobé ». Les ondulations du bord de fuite 106 sont identiques et le bord de fuite 106 présente une épaisseur e106 constante sur toute la longueur de l'insert 10. L'épaisseur e106 est de l'ordre de 1 mm, alors que la longueur de l'insert 10, qui dépend des dimensions de la grille 1, est comprise entre 40 et 100 cm. Le bord de fuite 106 comprend des portions arrondies 106a et 106b qui sont respectivement disposées au-dessus et en dessous du plan médian P10. Les portions arrondies 106a et 106b ont un rayon de courbure identique et s'étendent sur environ 180°. Le rayon de courbure des portions 106a et 106b est compris entre 1 mm et 10 mm, notamment de l'ordre de 2 mm. Les portions 106a et 106b sont reliées successivement entre elles par des portions rectilignes 106c, qui sont perpendiculaires au plan médian P10 et sensiblement verticales en configuration installée de l'insert 10 dans la grille 1.The lobes 108 and 110 define a regular and undulating serration along the axis X10. They delimit a trailing edge 106 which is a thin, undulating edge. We are talking about a "lobed" edge. The ripples of the trailing edge 106 are identical and the trailing edge 106 has a thickness e106 constant over the entire length of the insert 10. The thickness e106 is of the order of 1 mm, while the length of the insert 10, which depends on the dimensions of the grid 1, is between 40 and 100 cm. The trailing edge 106 comprises rounded portions 106a and 106b which are respectively disposed above and below the median plane P10. The rounded portions 106a and 106b have an identical radius of curvature and extend over approximately 180 °. The radius of curvature of the portions 106a and 106b is between 1 mm and 10 mm, in particular of the order of 2 mm. The portions 106a and 106b are connected successively to one another by rectilinear portions 106c, which are perpendicular to the median plane P10 and substantially vertical in the installed configuration of the insert 10 in the grid 1.

L'insert 10 comprend également un bord d'attaque 104, qui est rectiligne et s'étend parallèlement à l'axe longitudinal X10.The insert 10 also comprises a leading edge 104, which is rectilinear and extends parallel to the longitudinal axis X10.

Le plan P10 est un plan globalement horizontal en configuration installée de la grille 1 dans le mur. Ce plan P10 passe par le bord d'attaque 104 et par le milieu des portions rectilignes 106c.The plane P10 is a generally horizontal plane in the installed configuration of the grid 1 in the wall. This plane P10 passes through the leading edge 104 and the middle of the rectilinear portions 106c.

En fonctionnement, l'air est acheminé à partir d'une centrale de ventilation jusqu'à la grille 1. Sur la figure 2, le flux d'air provenant de la centrale de ventilation et débouchant dans la grille 1 est symbolisé par deux flèches F1. En pratique, l'air soufflé à travers la grille 1 est refroidi ou réchauffé au préalable en fonction du type de conditionnement sélectionné, c'est-à-dire climatisation ou chauffage. L'air soufflé à travers la grille 1 présente un écart de température important par rapport à l'air ambiant. Les lobes 108 et 110 délimitent chacun un canal de passage du flux d'air. Ainsi, le flux d'air F1 entrant dans la grille 1 est divisé, ou séparé, par les lobes 108 et 110 de l'insert 10.In operation, the air is routed from a ventilation unit to grid 1. On the figure 2 , the flow of air from the ventilation unit and opening into the grid 1 is symbolized by two arrows F1. In practice, the air blown through the grid 1 is cooled or preheated according to the type of packaging selected, that is to say, air conditioning or heating. The air blown through the grid 1 has a large temperature difference with respect to the ambient air. The lobes 108 and 110 each delimit a passage channel of the air flow. Thus, the flow of air F1 entering the grid 1 is divided, or separated, by the lobes 108 and 110 of the insert 10.

F2 et F3 désignent respectivement les flux de passage de l'air le long de la paroi interne des lobes 108 et 110. Ici, le côté « intérieur » des lobes 106 et 108 est défini comme le côté tourné vers le plan médian P10. Les flux F2 de passage de l'air dans les canaux des lobes 108 sont dirigés vers le haut alors que les flux F3 de passage de l'air dans les canaux des lobes 110 sont dirigés vers le bas, ce qui permet de séparer en deux le jet d'air éjecté à travers la grille 1. En divisant le flux d'air soufflé par la grille 1, la surface de contact entre le jet d'air soufflé et l'air ambiant est démultipliée et l'air sain se mélange plus facilement avec l'air ambiant. Les inserts 10 améliorent donc l'induction du jet soufflé à travers la grille 1, ce qui permet de réduire l'écart de température entre le jet soufflé et l'air ambiant d'environ 20%.F2 and F3 respectively designate the flow of air flow along the inner wall of the lobes 108 and 110. Here, the "inner" side of the lobes 106 and 108 is defined as the side facing the median plane P10. The air flow F2 in the channels of the lobes 108 are directed upwards while the airflow F3 flows in the channels of the lobes 110 are directed downwards, which allows to separate in two the jet of air ejected through the grid 1. By dividing the flow of air blown by the grid 1, the contact surface between the jet of air blown and the ambient air is multiplied and the healthy air is mixed more easily with the ambient air. The inserts 10 thus improve the induction of the jet blown through the grid 1, which reduces the temperature difference between the jet blown and the ambient air by about 20%.

Le jet d'air soufflé à travers la grille est ralenti par l'induction à cause des interactions avec l'air environnant, c'est pourquoi la géométrie de l'insert 10 favorise en réalité l'induction sur une courte distance, comprise entre 5 et 10 cm en sortie de la grille 1. Ainsi, la vitesse du jet n'est que faiblement impactée et le jet conserve une portée satisfaisante. En moyenne, une portée de 4 à 5 m est satisfaisante puisqu'elle permet généralement d'atteindre un mur opposé d'une pièce dans laquelle est installée la grille 1. De cette manière, en mode climatisation, l'air ne « chute » pas trop rapidement en direction du sol avec une température trop froide.The jet of air blown through the grid is slowed down by induction because of interactions with the surrounding air, which is why the geometry of the insert 10 actually promotes induction over a short distance, between 5 and 10 cm at the outlet of the grid 1. Thus, the speed of the jet is only slightly impacted and the jet retains a satisfactory range. On average, a range of 4 to 5 m is satisfactory since it generally makes it possible to reach an opposite wall of a room in which the grid 1 is installed. In this way, in air conditioning mode, the air does not "fall" too quickly towards the floor with a temperature too cold.

Cette portée est d'autant plus importante à atteindre dans le cas où l'air soufflé est réchauffé. En effet, dans ce cas, il est nécessaire de générer un mouvement circulatoire de l'air chaud au sein de la pièce pour éviter une stratification des couches d'air et la formation d'une nappe « chaude » à proximité du plafond. Une telle nappe entrainerait en effet le réchauffement du plafond et, par rayonnement, une sensation de « chaud » indésirable pour les usagers.This range is even more important to achieve in the case where the air is heated. Indeed, in this case, it is necessary to generate a circulatory movement of the hot air within the room to prevent stratification of the air layers and the formation of a "hot" sheet near the ceiling. Such a sheet would indeed cause the ceiling to warm up and, by radiation, a feeling of "hot" undesirable for users.

Par ailleurs, ce type d'insert peut également être intégré à un ventilo-convecteur plafonnier 3, représenté aux figures 6 et 8, qui est adapté pour être logé dans un faux-plafond 5 d'une pièce. Ce type d'appareil est couramment appelé « cassette de diffusion » et comporte une fente de diffusion 30 à travers laquelle l'air est soufflé dans un plan horizontal à proximité du plafond. Cette fente de diffusion est délimitée entre une plaque 322 d'un caisson parallélépipédique et un diffuseur 34. Le panneau diffuseur 34 est disposé en dessous du caisson 32. Le panneau diffuseur 34 et la plaque 322 sont des déflecteurs qui guident le jet d'air soufflé par le ventilo-convecteur 3 selon une direction prédéterminée Δ. La direction Δ est une direction horizontale de sorte que l'air diffusé par le ventilo-convecteur 3 « lèche » le plafond.Moreover, this type of insert can also be integrated into a ceiling fan coil 3, shown in FIGS. figures 6 and 8 which is adapted to be housed in a false ceiling 5 of a room. This type of apparatus is commonly referred to as a "diffusion cassette" and has a diffusion slot 30 through which air is blown in a horizontal plane near the ceiling. This diffusion slot is delimited between a plate 322 of a parallelepiped box and a diffuser 34. The diffuser panel 34 is disposed below the box 32. The diffuser panel 34 and the plate 322 are deflectors which guide the air jet blown by the fan coil 3 in a predetermined direction Δ. The direction Δ is a horizontal direction so that the air diffused by the fan coil 3 "licks" the ceiling.

La fente 30 forme un orifice de passage du jet d'air autour de plusieurs inserts 10. Les inserts 10 s'étendent le long de chaque côté de la fente 30. Les inserts 10, le panneau diffuseur 34 et la plaque 322 forment donc ensemble un dispositif de diffusion 1 du ventilo-convecteur 3.The slot 30 forms a passage opening of the air jet around several inserts 10. The inserts 10 extend along each side of the slot 30. The inserts 10, the diffuser panel 34 and the plate 322 thus form together a diffusion device 1 of the fan coil 3.

Certaines cassettes, dites à « quatre voies », diffusent de l'air dans quatre directions coplanaires opposées deux à deux. Dans ce cas, la fente de diffusion 30 est une fente périphérique rectangulaire. D'autres cassettes, dites à « trois voies », ne diffusent de l'air que dans trois directions coplanaires et la fente ne s'étend que sur trois côtés du caisson. Dans ce cas, la fente de diffusion 30 est en forme de U. Sur la figure 6, F4 et F5 désignent deux directions de diffusion d'un jet d'air.Some "four-way" cassettes broadcast air in four coplanar directions in pairs. In this case, the diffusion slot 30 is a rectangular peripheral slot. Other cassettes, called "three-way", only diffuse air in three coplanar directions and the slot extends only on three sides of the box. In this case, the diffusion slot 30 is U-shaped. figure 6 , F4 and F5 designate two directions of diffusion of an air jet.

Les inserts 10 sont fixés sur la surface supérieure du panneau 34. Ils comprennent des pattes de fixation 101, qui sont vissées au panneau 34. Les inserts 10 peuvent comprendre des moyens d'attache permettant de les solidariser l'un à l'autre. Il est également possible de réaliser un insert monobloc ayant une forme en U ou rectangulaire en fonction du type de cassette utilisé.The inserts 10 are fixed on the upper surface of the panel 34. They comprise fixing lugs 101, which are screwed to the panel 34. The inserts 10 may comprise fastening means for securing them to one another. It is also possible to make a monobloc insert having a U-shaped or rectangular shape depending on the type of cassette used.

En variante, la grille 1 peut être montée au plafond.Alternatively, the grid 1 can be mounted on the ceiling.

Sur les figures 9 et 10 est représentée une variante de construction d'un insert 10'. Cet insert 10' est prévu pour être intégré dans un ventilo-convecteur plafonnier tel que décrit ci-dessus. Il est représenté partiellement en longueur sur les figures 9 et 10. Il comprend trois pattes 101 de fixation au panneau 34 et délimite des lobes 110' inclinés. En effet, contrairement aux lobes 110 de l'insert des figures 1 à 8, qui s'étendent perpendiculairement à l'axe longitudinal X10 de l'insert 10, les lobes 110' forment avec un axe Y10 normal à l'axe X10 un angle A110 compris entre -60° et +60°, dans l'exemple égal à 20°. Cet angle est mesuré entre l'axe Y10 et une direction D110 selon laquelle s'étendent les lobes 110'. Les inserts 10 sont alors aptes à orienter les jets d'air diffusés sur les trois ou sur les quatre côtés de la cassette selon une direction moyenne inclinée par rapport aux directions F4 et F5 qui sont perpendiculaires aux côtés du panneau diffuseur 34. La direction moyenne des jets d'air diffusés sur les côtés de la cassette est donc orientée par les inserts 10 dans le plan de diffusion du ventilo-convecteur 3, qui est un plan horizontal. Cela permet d'éviter une interaction frontale des jets d'air émis par deux cassettes disposées en vis-à-vis et par conséquent la formation d'un courant froid ou chaud issu de cette interaction. Les usagers de la pièce ne sont donc pas gênés par des courants d'air froid ou chaud dirigés vers le sol. L'insert 10' comprend par ailleurs deux bords 114 en biseau, c'est-à-dire taillés à 45° par rapport à l'axe X10 ou Y10. Cela permet de mettre quatre inserts 10' bout à bout pour former un cadre rectangulaire. En variante non représentée, le ventilo-convecteur plafonnier 3 comprend des moyens pour orienter les inserts 10 dans un plan horizontal. Par exemple, ces moyens peuvent comprendre un support mobile servant de pivot pour orienter les inserts 10 sur une plage d'angles allant de -60° à +60° par rapport à un axe normal à un côté du panneau 34.On the Figures 9 and 10 is shown an alternative construction of an insert 10 '. This insert 10 'is intended to be integrated in a ceiling fan coil as described above. It is partially represented in length on Figures 9 and 10 . It comprises three tabs 101 for fixing to the panel 34 and delimits inclined lobes 110 '. Indeed, unlike lobes 110 of the insert of Figures 1 to 8 , which extend perpendicularly to the longitudinal axis X10 of the insert 10, the lobes 110 'form with an axis Y10 normal to the axis X10 an angle A110 of between -60 ° and + 60 °, in the example equal to 20 °. This angle is measured between the axis Y10 and a direction D110 along which the lobes 110 'extend. The inserts 10 are then able to orient the air jets diffused on the three or on the four sides of the cassette in a mean direction inclined with respect to the directions F4 and F5 which are perpendicular to the sides of the diffuser panel 34. The average direction air jets diffused on the sides of the cassette is thus oriented by the inserts 10 in the diffusion plane of the fan coil 3, which is a horizontal plane. This makes it possible to avoid frontal interaction of the air jets emitted by two cassettes disposed opposite each other and consequently the formation of a cold or hot current resulting from this interaction. The users of the room are therefore not hampered by drafts of cold or hot air directed towards the ground. The insert 10 'also comprises two edges 114 bevelled, that is to say cut at 45 ° with respect to the axis X10 or Y10. This allows four inserts 10 'end to end to form a rectangular frame. In a variant not shown, the ceiling fan coil 3 comprises means for orienting the inserts 10 in a horizontal plane. For example, these means may comprise a movable support serving as a pivot for orienting the inserts 10 over a range of angles ranging from -60 ° to + 60 ° with respect to an axis normal to one side of the panel 34.

Les caractéristiques des variantes et modes de réalisation envisagés ci-dessus peuvent être combinées entre elles pour générer de nouveaux modes de réalisation de l'invention.The characteristics of the variants and embodiments envisaged above can be combined with each other to generate new embodiments of the invention.

Claims (14)

Dispositif de diffusion (1) d'un jet d'air, comprenant: au moins un insert, qui comprend des lobes (108, 110; 110') de séparation, en deux flux (F2, F3) orientés différemment, d'un flux d'air (F1) éjecté à travers le dispositif de diffusion, ces lobes délimitant un bord de fuite (106) mince et ondulé caractérisé en ce qu'il comprend, en outre, au moins deux déflecteurs (8 ; 34, 322) disposés de part et d'autre de l'insert (10 ; 10'), qui définissent entre eux un orifice (O10 ; 30) de passage du jet d'air autour de l'insert et qui guident le jet d'air selon une direction prédéterminée (Δ).Apparatus for diffusing (1) an air jet, comprising: at least one insert, which comprises separating lobes (108, 110; 110 '), in two differently oriented flows (F2, F3) of a air flow (F1) ejected through the diffusion device, these lobes delimiting a thin and corrugated trailing edge (106), characterized in that it further comprises at least two deflectors (8; 34, 322) arranged on either side of the insert (10; 10 '), which define between them an orifice (O10; 30) for passage of the air jet around the insert and which guide the jet of air according to a predetermined direction (Δ). Dispositif selon la revendication 1, caractérisé en ce que le dispositif est une grille de diffusion (1), adaptée pour être montée sur une paroi et en ce que les déflecteurs (8) sont des ailettes appartenant à la grille.Device according to claim 1, characterized in that the device is a diffusion grid (1), adapted to be mounted on a wall and in that the deflectors (8) are fins belonging to the grid. Dispositif selon la revendication 2, caractérisé en ce que chaque insert (10) est disposé en amont par rapport aux ailettes (8) sur le trajet d'écoulement de jet d'air diffusé par la grille.Device according to claim 2, characterized in that each insert (10) is arranged upstream with respect to the fins (8) in the air jet flow path diffused by the grid. Dispositif selon l'une des revendications 2 et 3, caractérisé en ce que les ailettes (8) sont coudées et comportent une partie aval (8b) qui s'étend selon la direction prédéterminée (Δ).Device according to one of claims 2 and 3, characterized in that the fins (8) are bent and comprise a downstream portion (8b) which extends in the predetermined direction (Δ). Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que les inserts (10) comprennent des moyens (100,102) d'attache à deux tiges (4,6) de la grille (1).Device according to one of claims 2 to 4, characterized in that the inserts (10) comprise means (100,102) for attachment to two rods (4,6) of the grid (1). Dispositif selon la revendication 1, caractérisé en ce que les deux déflecteurs sont formés par un panneau diffuseur (34) et une plaque (322), adaptés pour être montés sur un ventilo-convecteur (3) plafonnier.Device according to claim 1, characterized in that the two baffles are formed by a diffuser panel (34) and a plate (322), adapted to be mounted on a ceiling fan-coil (3). Dispositif selon la revendication 6, caractérisé en ce que le panneau diffuseur (34) et la plaque (322) sont agencés pour diffuser le jet d'air dans trois ou quatre directions (F4, F5) prédéterminées qui sont coplanaires.Device according to claim 6, characterized in that the diffuser panel (34) and the plate (322) are arranged to diffuse the jet of air in three or four predetermined directions (F4, F5) which are coplanar. Dispositif selon l'une des revendications 6 et 7, caractérisé en ce que chaque insert (10) comprend des moyens de fixation au panneau diffuseur (34).Device according to one of claims 6 and 7, characterized in that each insert (10) comprises fastening means to the diffuser panel (34). Dispositif selon la revendication 8, caractérisé en ce que les moyens de fixation au panneau diffuseur (34) sont des pattes de fixation (101), adaptées pour être vissées au panneau (34).Device according to claim 8, characterized in that the fastening means to the diffuser panel (34) are fixing lugs (101), adapted to be screwed to the panel (34). Dispositif selon l'une des revendications 6 à 9, caractérisé en ce que les lobes (110') de l'insert (10') s'étendent chacun selon une direction (D110) inclinée par rapport à un axe (Y10) normal à un axe longitudinal (X10) de l'insert.Device according to one of claims 6 to 9, characterized in that the lobes (110 ') of the insert (10') each extend in a direction (D110) inclined relative to an axis (Y10) normal to a longitudinal axis (X10) of the insert. Ventilo-convecteur, caractérisé en ce qu'il comprend un dispositif de diffusion (1) selon l'une des revendications précédentes.Fan coil, characterized in that it comprises a diffusion device (1) according to one of the preceding claims. Ventilo-convecteur selon la revendication 11, caractérisé en ce que le ventilo-convecteur est un ventilo-convecteur plafonnier (3) comprenant un dispositif selon l'une des revendications 6 à 9 et des moyens pour orienter les inserts (10) dans un plan de diffusion horizontal du ventilo-convecteur.Fan coil according to claim 11, characterized in that the fan coil is a ceiling fan coil (3) comprising a device according to one of claims 6 to 9 and means for orienting the inserts (10) in a plane horizontal diffusion of the fan coil. Ventilo-convecteur selon la revendication 12, caractérisé en ce que un angle d'orientation des inserts dans le plan horizontal est compris entre -60 et +60° par rapport à un axe normal à un côté du panneau diffuseur (34).Fan coil according to claim 12, characterized in that an orientation angle of the inserts in the horizontal plane is between -60 and + 60 ° with respect to an axis normal to one side of the diffuser panel (34). Ventilo-convecteur selon la revendication 12 ou 13, caractérisé en ce que l'angle d'orientation des inserts dans le plan horizontal est ajustable au moyen d'un support mobile.Fan coil according to claim 12 or 13, characterized in that the angle of orientation of the inserts in the horizontal plane is adjustable by means of a movable support.
EP15163641.2A 2014-04-17 2015-04-15 Diffusion device with lobe inserts and fan coil comprising such a device Active EP2933575B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1453487A FR3020132B1 (en) 2014-04-17 2014-04-17 DIFFUSION DEVICE WITH LOBE INSERTS AND VENTILO-CONVECTOR COMPRISING SUCH A DEVICE

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EP2933575A1 true EP2933575A1 (en) 2015-10-21
EP2933575B1 EP2933575B1 (en) 2018-12-05

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EP15163641.2A Active EP2933575B1 (en) 2014-04-17 2015-04-15 Diffusion device with lobe inserts and fan coil comprising such a device

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EP (1) EP2933575B1 (en)
FR (1) FR3020132B1 (en)
RU (1) RU2675715C2 (en)

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Publication number Priority date Publication date Assignee Title
RU205662U1 (en) * 2021-05-21 2021-07-27 Общество с ограниченной ответственностью «СПН-Полимер» Flexible ventilation insert

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DE1579906A1 (en) 1965-07-02 1970-09-24 Haelg & Co Equipment for radiant heating or cooling
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US6004204A (en) 1995-03-10 1999-12-21 Luminis Pty Ltd. Induction nozzle and arrangement

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SU1733863A1 (en) * 1990-01-05 1992-05-15 Центральный научно-исследовательский и проектный институт "Тайфун" Ventilating device

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US2962952A (en) * 1957-03-01 1960-12-06 Carrier Corp Air conditioning unit
DE1579906A1 (en) 1965-07-02 1970-09-24 Haelg & Co Equipment for radiant heating or cooling
US5230656A (en) * 1992-08-05 1993-07-27 Carrier Corporation Mixer ejector flow distributor
US6004204A (en) 1995-03-10 1999-12-21 Luminis Pty Ltd. Induction nozzle and arrangement

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FR3020132B1 (en) 2016-05-27
RU2675715C2 (en) 2018-12-24
EP2933575B1 (en) 2018-12-05
RU2015114246A3 (en) 2018-10-25
RU2015114246A (en) 2016-11-10
FR3020132A1 (en) 2015-10-23

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