EP2927607B1 - Fan coil suitable for recessing in a false ceiling and set of at least two fan coils belonging to an air-conditioning system - Google Patents

Fan coil suitable for recessing in a false ceiling and set of at least two fan coils belonging to an air-conditioning system Download PDF

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Publication number
EP2927607B1
EP2927607B1 EP15157907.5A EP15157907A EP2927607B1 EP 2927607 B1 EP2927607 B1 EP 2927607B1 EP 15157907 A EP15157907 A EP 15157907A EP 2927607 B1 EP2927607 B1 EP 2927607B1
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EP
European Patent Office
Prior art keywords
air
fan coil
diffuser
fan
coil according
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EP15157907.5A
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German (de)
French (fr)
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EP2927607A1 (en
Inventor
Eric Leroy
Pierre Jean Vialle
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Carrier Corp
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Carrier Corp
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • F24F1/0014—Indoor units, e.g. fan coil units characterised by air outlets having two or more outlet openings
    • 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
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0047—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in the ceiling or at the ceiling
    • 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
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0616—Outlets that have intake openings

Definitions

  • fan coils which are housed in the false ceiling of the rooms.
  • These fan coils are commonly called “cassettes”. They include a rectangular box inside which is placed a motor-fan unit ensuring the suction and delivery of the air inside the room, a water coil for the heat treatment of the air and a condensate tray to collect droplets from condensation.
  • These fan coils also include a diffuser incorporating a filter and a return grille.
  • Some cassettes diffuse air in four directions, that is, on all four sides of the cabinet, while other cassettes only diffuse air on three sides of the cabinet.
  • the four-way cassettes are intended to be positioned in the center of the ceiling of a room, while the three-way cassettes are intended to be placed towards the entrance to the room or close to a wall.
  • EP-A-2 206 988 discloses a four-way cassette which aims to diffuse air as widely as possible on its periphery.
  • the cassette comprises deflectors making it possible to orient the air jets diffused around the cassette in a vertical plane. These deflectors are also shaped so that the air is distributed uniformly around the cassette.
  • the average direction of the air jets diffused on the four sides of the cassette is therefore perpendicular to the side of the cassette.
  • two successive cassettes are in practice separated by a distance ranging from 1.2 m to 1.35 m.
  • two cassettes arranged face to face emit jets of air which meet frontally.
  • cooling mode the interaction between two jets of cold air causes a cold downward flow between the two cassettes which is a source of discomfort for the users of the room. It is therefore important to minimize, or even avoid, the interaction between the jets blown by two successive cassettes.
  • certain ranges of cassettes are equipped with orientable nozzles which allow the air jets to be directed downwards in order to avoid interaction with the air jet produced by an adjacent cassette.
  • the air jets by directing the air jet downwards, the air is blown directly at the users of the room and they can feel the unpleasant sensation of a draft of cold air.
  • the orientable nozzles add bulk to the cassette and do not allow the use of a multipurpose cassette, in which only the diffuser is changed from a "three-way" configuration to a "four-way” configuration.
  • a fan coil 1 On the figure 1 is shown a fan coil 1.
  • This fan coil 1 is designed to be housed in a false ceiling of a room.
  • This type of fan coil is commonly called a "diffusion cassette”. It belongs to an air conditioning installation.
  • the fan coil 1 comprises a parallelepiped box 2 comprising four sides 22, two of which are visible in the figures, and a lower wall 2a.
  • X2 and Y2 denote two axes perpendicular to the two pairs of opposite sides 22 of the box 2.
  • the axes X2 and Y2 are orthogonal due to the rectangular section of the box 2.
  • a water coil 8 is arranged coaxially around the wheel 6.
  • This water coil 8 has a tubular geometry. It can be supplied with hot or cold water, depending on the type of heat treatment desired.
  • the water coil 8 is a heat exchanger which is partially received in a circular housing 100 of a condensate pan 10.
  • the condensate pan 10 is placed below the water coil 8. In air conditioning mode, the ventilated air by the wheel 6 is cooled and part of the air is liable to condense.
  • the condensate pan 10 makes it possible to recover, by gravity, the drops of water resulting from the condensation.
  • a diffuser 16 is disposed below the condensate pan 10. This diffuser is made of expanded polystyrene and protrudes from the lower wall 2a of the box 2, so that it defines with the box 2 a peripheral diffusion slot 20 The slot 20 extends on three sides of the fan coil 1 between the diffuser 16 and the lower wall 2a of the box 2.
  • the diffuser 16 comprises a return grille 12, which is fixed in a frame 18 assembled on the lower wall of the diffuser 16.
  • a seal 14 seals between the parts 10 and 16 on the side without the slot 20.
  • the three directions F1, F2 and F3 are included in a diffusion plane P16 which generally corresponds to the surface of the ceiling in the configuration of the cassette mounted in the false ceiling.
  • the plane P16 is parallel to the axes X2 and Y2.
  • the fan coil 1 is therefore a three-way cassette.
  • the directions F2 and F3 are parallel and in opposite directions. They are inclined with respect to the axis X2.
  • the direction F1 is oblique with respect to the directions F2 and F3.
  • the diffuser 16 has the overall shape of a rectangular frame comprising a rectangular cutout O16 for receiving a filter 176.
  • the filter 176 makes it possible to filter fine particles or other dust contained in the air, so as not to clog the fan coil 1 and to “cut down” the particulate pollution of the room.
  • the filter 176 is slightly raised to facilitate its visualization.
  • the filter 176 is held by the return grille 12 on the one hand and by a shoulder located in the inner periphery of the lower opening of the condensate tray 10. Latches 177 make it possible to hold the diffuser 16 in place while the fitter tighten fixing screws in threads arranged in the four corners of the diffuser 16.
  • Two deflectors 164 are arranged in the vicinity of two opposite corners of the diffuser 16, respectively of the corners 16A and 16C shown at the top left and at the bottom right at the bottom. figure 3 . These two deflectors 164 are disposed on the sides 160a and 160c and are integral with the diffuser 16. The deflectors 164 are disposed downstream of the surface 162 on the path of the air flow.
  • the deflector 164 comprises a rectilinear wall 170 and a convex wall 172 which extend between two edges 166 and 168.
  • the edge 166 forms a trailing edge of the deflector 164.
  • the convex wall 172 faces towards the side. outer edge 161 of the diffuser 16 and the straight wall 170 is turned towards the sloping surface 162.
  • the straight wall 170 guides the air flow F4 emerging near the corner 16A or 16C, during the operation of the fan coil 1.
  • the convex wall 172 of the deflector 164 comprises a rectilinear portion 171 which delimits the trailing edge 166.
  • This rectilinear portion 171 marks with the rectilinear wall 170 an angle A of between 10 ° and 40 °, preferably equal to 18 °.
  • the deflector 164 has a length L, calculated as the projection of the distance between the trailing edge 166 and the edge 168 on a plane P1 extending the rectilinear portion 171 of the convex wall 170. In practice, the length L is between 30 mm and 100 mm, preferably equal to 60 mm.
  • the deflector 164 has a width l, calculated as the distance from the edge 168 to the plane P1. In practice, the width l is between 5 and 85 mm, preferably equal to 19.5 mm.
  • the rectilinear portion 171 of the deflectors 164 extends parallel to the sides 160a and 160c of the diffuser 16.
  • the deflectors 164 are positioned set back by a distance d1 from the outer edge 161 of the diffuser 16. This has the advantage of limiting its sound. appearance to an outside observer in order to preserve the impression of a homogeneous slit on both sides of the machine.
  • the diffuser 16 comprises rounded reliefs 163 which are arranged in the vicinity of the corners 16A, 16B, 16C and 16D.
  • the edge 168 of each deflector 164 is arranged in practice against the adjacent rounded relief 163 so as to prevent any air leakage between the parts 163 and 164.
  • each deflector 164 has a thickness e144 which is greater than or equal to the thickness of the slot 20, so that the deflector 164 is flush with or in contact with the inner wall of the box 2. Thus, there is no air leak passing above the deflector 164 through the slot 20, that is to say between the deflector 164 and the lower wall 2a of the box 2.
  • FIG. 6 On the figure 6 are shown two diffusers 16 arranged side by side and in top view. These diffusers are separated by a distance d2 of between 1.2 m to 1.35 m, which corresponds to the distance observed in practice between two adjacent cassettes. The rest of the components of the cassettes are omitted for better visualization of the flows.
  • the ambient air in the room is sucked through the return grille 12 due to the vacuum generated by the rotation of the wheel 6 around the axis Z6.
  • the air passes through the return grille 12 and the filter 176 of the diffuser 16.
  • the air is then expelled in a centrifugal manner by the vanes of the impeller 6 and passes through the water coil 8.
  • the air passes through the water coil 8.
  • the air passing through the water coil 8 cools and is guided vertically in the direction of the diffuser 16 in the space between the internal vertical walls of the box 2 and the periphery of the coil 8.
  • the ambient air sucked in is mixed with "healthy" or hygienic air, which is injected from a ventilation unit into the fan coil 1.
  • the air flow drawn into the room is several hundred cubic meters per hour, while the healthy air flow is several tens of cubic meters per hour. Furthermore, the intake of clean air into the fan coil unit 1 is not counter-flow with the air drawn in so as not to reduce the efficiency of the motor 4. In the example, the intake of clean air is carried out at the condensate tray 10.
  • the straightened air flow F4 is diffused generally perpendicular to one side of the box 2, that is to say along the axes X2 or Y2.
  • the air flow lines emerging in the vicinity of the deflectors 164 are deviated. These flow lines run along the rectilinear wall 170 of the deflectors 164 and are directed in a direction F5 parallel to the wall 170.
  • the direction F5 is inclined by approximately 70 ° with respect to the axis X2. When the angle A is 18 °, the direction F5 is inclined by 72 ° with respect to the axis X2.
  • the deflectors 164 are mounted on a diffuser suitable for a four-way fan coil.
  • side 160d of diffuser 16 also diffuses air and a baffle 164 can be mounted on that side or on the opposite side if another cassette is opposite side 160d.

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

Description

L'invention concerne un ventilo-convecteur intégrable à un faux plafond ainsi qu'un ensemble d'au moins deux de ces ventilo-convecteurs disposés en vis-à-vis dans le faux plafond.The invention relates to a fan coil that can be integrated into a false ceiling as well as a set of at least two of these fan coils arranged opposite each other in the false ceiling.

Dans le domaine du conditionnement d'air, il est connu d'équiper les bâtiments de ventilo-convecteurs, qui sont logés dans le faux plafond des pièces. Ces ventilo-convecteurs sont couramment appelés « cassettes ». Ils comprennent un caisson rectangulaire à l'intérieur duquel est disposé un groupe moto-ventilateur assurant l'aspiration et le refoulement de l'air à l'intérieur de la pièce, une batterie à eau pour le traitement thermique de l'air et un bac à condensats pour récupérer les gouttelettes issues de la condensation. Ces ventilo-convecteurs comprennent également un diffuseur intégrant un filtre et une grille de reprise.In the field of air conditioning, it is known practice to equip buildings with fan coils, which are housed in the false ceiling of the rooms. These fan coils are commonly called "cassettes". They include a rectangular box inside which is placed a motor-fan unit ensuring the suction and delivery of the air inside the room, a water coil for the heat treatment of the air and a condensate tray to collect droplets from condensation. These fan coils also include a diffuser incorporating a filter and a return grille.

Certaines cassettes diffusent de l'air dans quatre directions, c'est-à-dire sur les quatre côtés du caisson, alors que d'autres cassettes ne diffusent de l'air que sur trois côtés du caisson. On parle de cassettes à trois ou quatre voies. En particulier, les cassettes à quatre voies sont destinées à être positionnées au centre du plafond d'un local, alors que les cassettes à trois voies sont destinées à être placées vers l'entrée du local ou proches d'un mur. EP-A-2 206 988 divulgue une cassette quatre voies qui vise à diffuser de l'air de la manière la plus large possible sur sa périphérie. La cassette comprend des déflecteurs permettant d'orienter les jets d'air diffusés autour de la cassette dans un plan vertical. Ces déflecteurs sont en outre conformés pour que l'air soit diffusé de manière homogène autour de la cassette. La direction moyenne des jets d'air diffusés sur les quatre côtés de la cassette est donc perpendiculaire au côté de la cassette. Or, deux cassettes successives sont en pratique séparées d'une distance allant de 1,2 m à 1,35 m. Dans cette configuration, deux cassettes disposées face-à-face émettent des jets d'air qui se rencontrent frontalement. En mode rafraichissement, l'interaction entre deux jets d'air froid provoque un écoulement descendant froid entre les deux cassettes qui est source d'inconfort pour les usagers de la pièce. Il importe donc de minimiser, voire éviter, l'interaction entre les jets soufflés par deux cassettes successives.Some cassettes diffuse air in four directions, that is, on all four sides of the cabinet, while other cassettes only diffuse air on three sides of the cabinet. We are talking about three- or four-way cassettes. In particular, the four-way cassettes are intended to be positioned in the center of the ceiling of a room, while the three-way cassettes are intended to be placed towards the entrance to the room or close to a wall. EP-A-2 206 988 discloses a four-way cassette which aims to diffuse air as widely as possible on its periphery. The cassette comprises deflectors making it possible to orient the air jets diffused around the cassette in a vertical plane. These deflectors are also shaped so that the air is distributed uniformly around the cassette. The average direction of the air jets diffused on the four sides of the cassette is therefore perpendicular to the side of the cassette. However, two successive cassettes are in practice separated by a distance ranging from 1.2 m to 1.35 m. In this configuration, two cassettes arranged face to face emit jets of air which meet frontally. In cooling mode, the interaction between two jets of cold air causes a cold downward flow between the two cassettes which is a source of discomfort for the users of the room. It is therefore important to minimize, or even avoid, the interaction between the jets blown by two successive cassettes.

Pour ce faire, certaines gammes de cassettes sont équipées de buses orientables qui permettent de diriger les jets d'air vers le bas afin d'éviter une interaction avec le jet d'air produit par une cassette adjacente. Cependant, en dirigeant le jet d'air vers le bas, l'air est directement pulsé sur les usagers de la pièce et ceux-ci peuvent ressentir la désagréable sensation d'un courant d'air froid. En outre, les buses orientables ajoutent de l'encombrement à la cassette et ne permettent pas d'utiliser une cassette polyvalente, dans laquelle seul le diffuseur est changé pour passer d'une configuration « trois voies » à une configuration « quatre voies ».To do this, certain ranges of cassettes are equipped with orientable nozzles which allow the air jets to be directed downwards in order to avoid interaction with the air jet produced by an adjacent cassette. However, by directing the air jet downwards, the air is blown directly at the users of the room and they can feel the unpleasant sensation of a draft of cold air. In addition, the orientable nozzles add bulk to the cassette and do not allow the use of a multipurpose cassette, in which only the diffuser is changed from a "three-way" configuration to a "four-way" configuration.

Par ailleurs, E-A-1 884 718 divulgue un ventilo-convecteur plafonnier comportant des déflecteurs agencés, à l'intérieur de la cassette, au niveau des arrêtes de coin de la cassette. Ces déflecteurs permettent de modifier l'écoulement interne de l'air, en déviant l'air soufflé en direction des arrêtes de coin vers un côté de la cassette. Cela permet de limiter les problèmes de recirculation dans les angles et d'éviter ainsi une gêne acoustique. En revanche, ces déflecteurs ne sont pas configurés pour orienter la direction moyenne des jets d'air émis sur les côtés de la cassette, ceci afin d'éviter les interactions entre les jets d'air diffusés par deux cassettes disposées face-à-face.Furthermore, E-A-1 884 718 discloses a ceiling fan coil comprising baffles arranged, inside the cassette, at the level of the corner edges of the cassette. These deflectors allow the internal air flow to be modified, by deflecting the blown air in the direction of the corner ridges towards one side of the cassette. This makes it possible to limit the problems of recirculation in the corners and thus avoid an acoustic disturbance. On the other hand, these deflectors are not configured to orient the average direction of the air jets emitted on the sides of the cassette, in order to avoid interactions between the air jets diffused by two cassettes placed face to face. .

C'est à ces inconvénients qu'entend plus particulièrement remédier l'invention en proposant un ventilo-convecteur simplifié, permettant de limiter l'interaction des jets d'air avec ceux soufflés par un ventilo-convecteur disposé en vis-à-vis.It is these drawbacks that the invention more particularly intends to remedy by proposing a simplified fan coil, making it possible to limit the interaction of the air jets with those blown by a fan coil arranged opposite.

A cet effet l'invention concerne un ventilo-convecteur intégrable à un faux-plafond, comprenant un caisson et un diffuseur, qui délimite avec le caisson une fente de diffusion, adaptée pour diffuser des jets d'air dans au moins trois directions moyennes contenues dans un plan de diffusion. Conformément à l'invention, le ventilo-convecteur comprend, en outre, au moins un déflecteur, qui est monté sur le diffuseur et qui est adapté pour diriger au moins un des jets d'air diffusés à travers la fente selon une direction moyenne inclinée par rapport à un axe perpendiculaire à un côté du caisson.To this end, the invention relates to a fan coil that can be integrated into a false ceiling, comprising a box and a diffuser, which defines with the box a diffusion slot, suitable for diffusing jets of air in at least three average directions contained. in a dissemination plan. According to the invention, the fan coil further comprises at least one deflector, which is mounted on the diffuser and which is adapted to direct at least one of the air jets diffused through the slot in an inclined mean direction. with respect to an axis perpendicular to one side of the box.

Grâce à l'invention, le ou les déflecteurs montés sur le diffuseur du ventilo-convecteur permettent de dévier le jet d'air dirigé vers une cassette adjacente. Le jet d'air du ventilo-convecteur disposé à côté est dévié de manière similaire, de sorte que les deux jets ne se rencontrent pas frontalement.Thanks to the invention, the deflector or deflectors mounted on the diffuser of the fan coil make it possible to deflect the air jet directed towards an adjacent cassette. The air jet from the adjacent fan coil unit is similarly deflected, so that the two jets do not meet frontally.

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

  • Le ou les déflecteurs sont disposés, sur le trajet d'écoulement de l'air, en aval d'une surface en pente, configurée pour redresser l'air dans une direction contenue dans le plan de diffusion.
  • Le diffuseur comprend un cadre qui délimite un bord inférieur de la fente et chaque déflecteur est disposé au voisinage d'un coin du diffuseur et comprend une surface qui s'étend parallèlement à un côté du diffuseur.
  • Chaque déflecteur comprend une paroi rectiligne et une paroi convexe qui s'étendent entre deux bords, dont un bord de fuite.
  • La paroi convexe comprend une portion rectiligne qui délimite le bord de fuite et qui marque avec la paroi rectiligne un angle compris entre 10° et 40°.
  • Chaque déflecteur présente une longueur, calculée comme la projection de la distance entre le bord de fuite et l'autre bord sur un plan prolongeant la portion rectiligne de la paroi convexe, qui est comprise entre 30 mm et 100 mm.
  • Chaque déflecteur présente une largeur, calculée comme la distance du bord opposé au bord de fuite à un plan prolongeant la portion rectiligne de la paroi convexe, qui est comprise entre 5 et 85 mm.
  • Le ou les déflecteurs sont positionnés en retrait par rapport à un bord extérieur du diffuseur, notamment à une distance de 15 mm.
  • Le ou les déflecteurs présentent une épaisseur, qui est supérieure ou égale à l'épaisseur de la fente.
According to advantageous but not mandatory aspects of the invention, a fan coil can incorporate one or more of the following characteristics, taken in any technically admissible combination:
  • The baffle or baffles are disposed, in the air flow path, downstream of a sloping surface, configured to straighten the air in a direction contained in the diffusion plane.
  • The diffuser includes a frame which defines a lower edge of the slot and each baffle is disposed adjacent a corner of the diffuser and includes a surface which extends parallel to one side of the diffuser.
  • Each deflector comprises a rectilinear wall and a convex wall which extend between two edges, including a trailing edge.
  • The convex wall comprises a rectilinear portion which delimits the trailing edge and which marks with the rectilinear wall an angle of between 10 ° and 40 °.
  • Each deflector has a length, calculated as the projection of the distance between the trailing edge and the other edge on a plane extending the rectilinear portion of the convex wall, which is between 30 mm and 100 mm.
  • Each deflector has a width, calculated as the distance from the edge opposite the trailing edge to a plane extending the rectilinear portion of the convex wall, which is between 5 and 85 mm.
  • The deflector (s) are positioned set back relative to an outer edge of the diffuser, in particular at a distance of 15 mm.
  • The deflector or deflectors have a thickness which is greater than or equal to the thickness of the slot.

L'invention concerne également un ensemble d'au moins deux ventilo-convecteurs appartenant à une installation de conditionnement d'air, ces ventilo-convecteurs étant disposés face-à-face dans un faux plafond. Les ventilo-convecteurs sont tels que décrits précédemment et sont agencés de manière que, en fonctionnement, des jets d'air provenant de deux bords en vis-à-vis des ventilo-convecteurs sont déviés selon des directions moyennes décalées l'une par rapport à l'autre et non-sécantes.The invention also relates to a set of at least two fan coils belonging to an air conditioning installation, these fan coils being placed face to face in a false ceiling. The fan coils are as described above and are arranged so that, in operation, air jets coming from two opposite edges of the fan coils are deflected in mean directions offset from one another. to the other and non-secant.

L'invention et d'autres avantages de celle-ci apparaîtront plus clairement à la lumière de la description qui va suivre d'un mode de réalisation d'un ventilo-convecteur conforme à son principe, donné uniquement à titre d'exemple et faite en référence aux dessins dans lesquels :

  • la figure 1 est une vue en perspective éclatée d'un ventilo-convecteur conforme à l'invention,
  • la figure 2 est une vue en perspective du ventilo-convecteur de la figure 1 en configuration assemblée,
  • la figure 3 est une vue en perspective et à plus grande échelle d'un diffuseur appartenant au ventilo-convecteur des figures 1 et 2,
  • la figure 4 est une vue de face et à plus grande échelle d'un déflecteur appartenant au diffuseur de la figure 3,
  • la figure 5 est une vue en perspective du déflecteur de la figure 4, et
  • la figure 6 représente une disposition schématique de deux diffuseurs appartenant à deux ventilo-convecteurs disposés face à face, au sein d'une installation de conditionnement d'air.
The invention and other advantages thereof will emerge more clearly in the light of the following description of an embodiment of a fan coil in accordance with its principle, given only by way of example and made. with reference to the drawings in which:
  • the figure 1 is an exploded perspective view of a fan coil according to the invention,
  • the figure 2 is a perspective view of the fan coil in the figure 1 in assembled configuration,
  • the figure 3 is a perspective view on a larger scale of a diffuser belonging to the fan coil of the figures 1 and 2 ,
  • the figure 4 is a front view and on a larger scale of a deflector belonging to the diffuser of the figure 3 ,
  • the figure 5 is a perspective view of the deflector of the figure 4 , and
  • the figure 6 shows a schematic arrangement of two diffusers belonging to two fan coils arranged face to face, within an air conditioning installation.

Sur la figure 1 est représenté un ventilo-convecteur 1. Ce ventilo-convecteur 1 est prévu pour être logé dans un faux plafond d'une pièce. Ce type de ventilo-convecteur est couramment appelé « cassette de diffusion». Il appartient à une installation de conditionnement d'air.On the figure 1 is shown a fan coil 1. This fan coil 1 is designed to be housed in a false ceiling of a room. This type of fan coil is commonly called a "diffusion cassette". It belongs to an air conditioning installation.

Dans ce document, les directions « haut », « bas », « supérieure » et « inférieure » doivent être interprétées par rapport à une configuration montée du ventilo-convecteur 1 dans le faux-plafond.In this document, the directions "up", "down", "upper" and "lower" must be interpreted in relation to a configuration of the fan coil 1 mounted in the false ceiling.

Le ventilo-convecteur 1 comprend un caisson parallélépipédique 2 comprenant quatre côtés 22 dont deux sont visibles sur les figures, et une paroi inférieure 2a. On note X2 et Y2 deux axes perpendiculaires aux deux paires de côtés opposés 22 du caisson 2. Les axes X2 et Y2 sont orthogonaux du fait de la section rectangulaire du caisson 2.The fan coil 1 comprises a parallelepiped box 2 comprising four sides 22, two of which are visible in the figures, and a lower wall 2a. X2 and Y2 denote two axes perpendicular to the two pairs of opposite sides 22 of the box 2. The axes X2 and Y2 are orthogonal due to the rectangular section of the box 2.

A l'intérieur du caisson 2 sont disposés des moyens M1 d'aspiration et de refoulement de l'air à l'intérieur de la pièce. Ces moyens M1 sont formés par un groupe moto-ventilateur comprenant un moteur électrique 4 et une roue 6. Le moteur électrique 4 est fixé à l'intérieur du caisson 2 par un trépied non représenté et entraine la roue 6 en rotation autour d'un axe Z6, qui est sensiblement vertical en configuration montée de la cassette dans le faux-plafond. L'axe Z6 est perpendiculaire aux axes X2 et Y2.Inside the box 2 are arranged means M1 for suction and delivery of air inside the room. These means M1 are formed by a motor-fan unit comprising an electric motor 4 and a wheel 6. The electric motor 4 is fixed inside the box 2 by a tripod (not shown) and drives the wheel 6 in rotation around a Z6 axis, which is substantially vertical when the cassette is mounted in the false ceiling. The Z6 axis is perpendicular to the X2 and Y2 axes.

Une batterie à eau 8 est disposée coaxialement autour de la roue 6. Cette batterie à eau 8 présente une géométrie tubulaire. Elle peut être alimentée avec de l'eau chaude ou de l'eau froide, en fonction du type de traitement thermique souhaité. La batterie à eau 8 est un échangeur thermique qui est partiellement reçu dans un logement circulaire 100 d'un bac à condensats 10. Le bac à condensats 10 est disposé en dessous de la batterie à eau 8. En mode climatisation, l'air ventilé par la roue 6 est refroidi et une partie de l'air est susceptible de se condenser. Le bac à condensats 10 permet de récupérer, par gravité, les gouttes d'eau issues de la condensation.A water coil 8 is arranged coaxially around the wheel 6. This water coil 8 has a tubular geometry. It can be supplied with hot or cold water, depending on the type of heat treatment desired. The water coil 8 is a heat exchanger which is partially received in a circular housing 100 of a condensate pan 10. The condensate pan 10 is placed below the water coil 8. In air conditioning mode, the ventilated air by the wheel 6 is cooled and part of the air is liable to condense. The condensate pan 10 makes it possible to recover, by gravity, the drops of water resulting from the condensation.

Un diffuseur 16 est disposé en dessous du bac à condensats 10. Ce diffuseur est réalisé en polystyrène expansé et fait saillie par rapport à la paroi inférieure 2a du caisson 2, si bien qu'il délimite avec le caisson 2 une fente périphérique de diffusion 20. La fente 20 s'étend sur trois côtés du ventilo-convecteur 1 entre le diffuseur 16 et la paroi inférieure 2a du caisson 2.A diffuser 16 is disposed below the condensate pan 10. This diffuser is made of expanded polystyrene and protrudes from the lower wall 2a of the box 2, so that it defines with the box 2 a peripheral diffusion slot 20 The slot 20 extends on three sides of the fan coil 1 between the diffuser 16 and the lower wall 2a of the box 2.

Par ailleurs, le diffuseur 16 comprend une grille de reprise 12, qui est fixée dans un cadre 18 assemblé sur la paroi inférieure du diffuseur 16. Un joint 14 assure l'étanchéité entre les pièces 10 et 16 du côté dépourvu de la fente 20.Furthermore, the diffuser 16 comprises a return grille 12, which is fixed in a frame 18 assembled on the lower wall of the diffuser 16. A seal 14 seals between the parts 10 and 16 on the side without the slot 20.

Comme visible à la figure 2, le diffuseur 16 est adapté pour diffuser de l'air globalement dans trois directions moyennes F1, F2 et F3 à travers la fente 20. Les directions moyennes F1, F2 et F3 représentent chacune la direction suivie « en moyenne » par chaque ligne de flux d'air le long d'un des trois côtés de la fente 20, c'est-à-dire la direction du jet globalement soufflé par ce côté de la fente. Ainsi, l'angle des directions F1, F2 et F3 par rapport à l'axe X2 ou Y2 est égal à la moyenne des angles mesurés par rapport à l'axe X2 ou Y2 des directions des lignes de flux d'air émis sur un côté de la fente. Les trois directions F1, F2 et F3 sont comprises dans un plan de diffusion P16 qui correspond globalement à la surface du plafond en configuration montée de la cassette dans le faux-plafond. Le plan P16 est parallèle aux axes X2 et Y2. Le ventilo-convecteur 1 est donc une cassette à trois voies. Les directions F2 et F3 sont parallèles et de sens opposé. Elles sont inclinées par rapport à l'axe X2. La direction F1 est oblique par rapport aux directions F2 et F3.As visible at the figure 2 , the diffuser 16 is adapted to diffuse air globally in three average directions F1, F2 and F3 through the slot 20. The average directions F1, F2 and F3 each represent the direction followed “on average” by each flow line air along one of the three sides of the slit 20, that is to say the direction of the jet generally blown through that side of the slit. Thus, the angle of the directions F1, F2 and F3 with respect to the axis X2 or Y2 is equal to the average of the angles measured with respect to the axis X2 or Y2 of the directions of the lines of air flow emitted on a side of the slot. The three directions F1, F2 and F3 are included in a diffusion plane P16 which generally corresponds to the surface of the ceiling in the configuration of the cassette mounted in the false ceiling. The plane P16 is parallel to the axes X2 and Y2. The fan coil 1 is therefore a three-way cassette. The directions F2 and F3 are parallel and in opposite directions. They are inclined with respect to the axis X2. The direction F1 is oblique with respect to the directions F2 and F3.

Par ailleurs, les cassettes à quatre voies diffèrent du ventilo-convecteur 1 seulement de part le diffuseur qu'elles utilisent. On parle donc de cassettes polyvalentes.In addition, four-way cassettes differ from fan coil 1 only in terms of the diffuser they use. We are therefore talking about multipurpose cassettes.

Comme mieux visible à la figure 3, le diffuseur 16 a globalement la forme d'un cadre rectangulaire comprenant une découpe rectangulaire O16 de réception d'un filtre 176. Le filtre 176 permet de filtrer les particules fines ou autres poussières contenues dans l'air, de manière à ne pas encrasser le ventilo-convecteur 1 et à « abattre » la pollution particulaire du local. A la figure 1, le filtre 176 est légèrement surélevé pour faciliter sa visualisation. Le filtre 176 est maintenu par la grille de reprise 12 d'une part et par un épaulement situé dans le pourtour intérieur de l'ouverture inférieure du bac à condensats 10. Des loquets 177 permettent de maintenir le diffuseur 16 en place pendant que le monteur serre des vis de fixation dans des taraudages disposés aux quatre coins du diffuseur 16.As best seen at the figure 3 , the diffuser 16 has the overall shape of a rectangular frame comprising a rectangular cutout O16 for receiving a filter 176. The filter 176 makes it possible to filter fine particles or other dust contained in the air, so as not to clog the fan coil 1 and to “cut down” the particulate pollution of the room. To the figure 1 , the filter 176 is slightly raised to facilitate its visualization. The filter 176 is held by the return grille 12 on the one hand and by a shoulder located in the inner periphery of the lower opening of the condensate tray 10. Latches 177 make it possible to hold the diffuser 16 in place while the fitter tighten fixing screws in threads arranged in the four corners of the diffuser 16.

Le diffuseur 16 comporte quatre côtés 160a, 160b, 160c et 160d perpendiculaires deux à deux. Les côtés 160a et 160c diffusent respectivement les jets d'air dirigés selon les directions F2 et F3, alors que le côté 160b diffuse le jet d'air dirigé selon la direction F1. Le côté 160d est plus épais que les autres côtés et son épaisseur est en pratique supérieure ou égale à l'épaisseur de la fente 20 de sorte que l'air ne peut pas être diffusé par le côté 160d. Le diffuseur 16 comprend une surface 162 en pente par rapport aux axes X2, Y2 et Z6 qui s'étend sur toute la périphérie de la découpe O16. Cette surface 162 est incurvée et permet de transformer un flux d'air vertical en un flux d'air horizontal contenu dans le plan de diffusion P16, comme représenté par les lignes de flux d'air F4. Le diffuseur 16 comprend un bord rectangulaire extérieur 161, qui est un bord inférieur de la fente 20.The diffuser 16 has four sides 160a, 160b, 160c and 160d perpendicular two by two. The sides 160a and 160c respectively diffuse the air jets directed in the directions F2 and F3, while the side 160b diffuses the air jet directed in the direction F1. The side 160d is thicker than the other sides and its thickness is in practice greater than or equal to the thickness of the slit 20 so that air cannot be diffused from the side 160d. The diffuser 16 comprises a surface 162 sloping with respect to the axes X2, Y2 and Z6 which extends over the entire periphery of the cutout O16. This surface 162 is curved and makes it possible to transform a vertical air flow into a horizontal air flow contained in the diffusion plane P16, as represented by the air flow lines F4. Diffuser 16 includes an outer rectangular edge 161, which is a lower edge of slot 20.

Deux déflecteurs 164 sont disposés au voisinage de deux coins opposés du diffuseur 16, respectivement des coins 16A et 16C représentés en haut à gauche et en bas à droite à la figure 3. Ces deux déflecteurs 164 sont disposés sur les côtés 160a et 160c et sont monoblocs avec le diffuseur 16. Les déflecteurs 164 sont disposés en aval de la surface 162 sur le trajet de l'écoulement d'air.Two deflectors 164 are arranged in the vicinity of two opposite corners of the diffuser 16, respectively of the corners 16A and 16C shown at the top left and at the bottom right at the bottom. figure 3 . These two deflectors 164 are disposed on the sides 160a and 160c and are integral with the diffuser 16. The deflectors 164 are disposed downstream of the surface 162 on the path of the air flow.

Dans la suite de la description, un seul déflecteur 164 est décrit puisque les deux déflecteurs 164 sont identiques.In the remainder of the description, only one deflector 164 is described since the two deflectors 164 are identical.

Comme mieux visible aux figures 4 et 5, le déflecteur 164 comprend une paroi rectiligne 170 et une paroi convexe 172 qui s'étendent entre deux bords 166 et 168. Dans l'exemple, le bord 166 forme un bord de fuite du déflecteur 164. La paroi convexe 172 est tournée vers le bord extérieur 161 du diffuseur 16 et la paroi rectiligne 170 est tournée vers la surface en pente 162. La paroi rectiligne 170 guide le flux d'air F4 débouchant à proximité du coin 16A ou 16C, lors du fonctionnement du ventilo-convecteur 1.As better visible to figures 4 and 5 , the deflector 164 comprises a rectilinear wall 170 and a convex wall 172 which extend between two edges 166 and 168. In the example, the edge 166 forms a trailing edge of the deflector 164. The convex wall 172 faces towards the side. outer edge 161 of the diffuser 16 and the straight wall 170 is turned towards the sloping surface 162. The straight wall 170 guides the air flow F4 emerging near the corner 16A or 16C, during the operation of the fan coil 1.

La paroi convexe 172 du déflecteur 164 comprend une portion rectiligne 171 qui délimite le bord de fuite 166. Cette portion rectiligne 171 marque avec la paroi rectiligne 170 un angle A compris entre 10° et 40°, de préférence égal à 18°. En outre, le déflecteur 164 présente une longueur L, calculée comme la projection de la distance entre le bord de fuite 166 et le bord 168 sur un plan P1 prolongeant la portion rectiligne 171 de la paroi convexe 170. En pratique, la longueur L est comprise entre 30 mm et 100 mm, de préférence égale à 60 mm. De plus, le déflecteur 164 présente une largeur ℓ, calculée comme la distance du bord 168 au plan P1. En pratique, la largeur ℓ est comprise entre 5 et 85 mm, de préférence égale à 19,5 mm.The convex wall 172 of the deflector 164 comprises a rectilinear portion 171 which delimits the trailing edge 166. This rectilinear portion 171 marks with the rectilinear wall 170 an angle A of between 10 ° and 40 °, preferably equal to 18 °. In addition, the deflector 164 has a length L, calculated as the projection of the distance between the trailing edge 166 and the edge 168 on a plane P1 extending the rectilinear portion 171 of the convex wall 170. In practice, the length L is between 30 mm and 100 mm, preferably equal to 60 mm. In addition, the deflector 164 has a width ℓ, calculated as the distance from the edge 168 to the plane P1. In practice, the width ℓ is between 5 and 85 mm, preferably equal to 19.5 mm.

Comme visible à la figure 3, la portion rectiligne 171 des déflecteurs 164 s'étend parallèlement aux côtés 160a et 160c du diffuseur 16. Les déflecteurs 164 sont positionnés en retrait d'une distance d1 par rapport au bord extérieur 161 du diffuseur 16. Cela a pour avantage de limiter son apparence pour un observateur extérieur afin de préserver l'impression d'une fente homogène des deux côtés de la machine.As visible at the figure 3 , the rectilinear portion 171 of the deflectors 164 extends parallel to the sides 160a and 160c of the diffuser 16. The deflectors 164 are positioned set back by a distance d1 from the outer edge 161 of the diffuser 16. This has the advantage of limiting its sound. appearance to an outside observer in order to preserve the impression of a homogeneous slit on both sides of the machine.

Le diffuseur 16 comprend des reliefs arrondis 163 qui sont disposés au voisinage des coins 16A, 16B, 16C et 16D. Le bord 168 de chaque déflecteur 164 est disposé en pratique contre le relief arrondi adjacent 163 de manière à éviter toute fuite d'air entre les pièce 163 et164. Par ailleurs, chaque déflecteur 164 présente une épaisseur e144 qui est supérieure ou égale à l'épaisseur de la fente 20, de sorte que le déflecteur 164 affleure ou est au contact de la paroi intérieure du caisson 2. Ainsi, il n'y a pas de fuite d'air passant au-dessus du déflecteur 164 à travers la fente 20, c'est-à-dire entre le déflecteur 164 et la paroi inférieure 2a du caisson 2.The diffuser 16 comprises rounded reliefs 163 which are arranged in the vicinity of the corners 16A, 16B, 16C and 16D. The edge 168 of each deflector 164 is arranged in practice against the adjacent rounded relief 163 so as to prevent any air leakage between the parts 163 and 164. Furthermore, each deflector 164 has a thickness e144 which is greater than or equal to the thickness of the slot 20, so that the deflector 164 is flush with or in contact with the inner wall of the box 2. Thus, there is no air leak passing above the deflector 164 through the slot 20, that is to say between the deflector 164 and the lower wall 2a of the box 2.

Sur la figure 6 sont représentés deux diffuseurs 16 disposés côte-à-côte et en vue de dessus. Ces diffuseurs sont séparés d'une distance d2 comprise entre 1,2 m à 1,35 m, qui correspond à la distance observée en pratique entre deux cassettes adjacentes. Le reste des composants des cassettes est omis pour une meilleure visualisation des flux.On the figure 6 are shown two diffusers 16 arranged side by side and in top view. These diffusers are separated by a distance d2 of between 1.2 m to 1.35 m, which corresponds to the distance observed in practice between two adjacent cassettes. The rest of the components of the cassettes are omitted for better visualization of the flows.

En fonctionnement, l'air ambiant de la pièce est aspiré à travers la grille de reprise 12 du fait de la dépression générée par la rotation de la roue 6 autour de l'axe Z6. L'air traverse la grille de reprise 12 et le filtre 176 du diffuseur 16. L'air est ensuite expulsé de manière centrifuge par les aubes de la roue 6 et traverse la batterie à eau 8. Dans le cas d'une climatisation, l'air traversant la batterie à eau 8 se refroidit et est guidé verticalement en direction du diffuseur 16 dans l'espace présent entre les parois verticales internes du caisson 2 et la périphérie de la batterie 8. En pratique, l'air ambiant aspiré est mélangé avec un air « sain » ou hygiénique, qui est injecté à partir d'une centrale de ventilation dans le ventilo-convecteur 1. Le débit d'air aspiré à l'intérieur de la pièce est de plusieurs centaines de mètres cubes par heure, alors que le débit d'air sain est de plusieurs dizaines de mètres cubes par heure. Par ailleurs, l'arrivée d'air sain dans le ventilo-convecteur 1 ne se fait pas à contre flux avec l'air aspiré pour ne pas diminuer le rendement du moteur 4. Dans l'exemple, l'arrivée d'air sain s'effectue au niveau du bac à condensats 10.In operation, the ambient air in the room is sucked through the return grille 12 due to the vacuum generated by the rotation of the wheel 6 around the axis Z6. The air passes through the return grille 12 and the filter 176 of the diffuser 16. The air is then expelled in a centrifugal manner by the vanes of the impeller 6 and passes through the water coil 8. In the case of air conditioning, the air passes through the water coil 8. the air passing through the water coil 8 cools and is guided vertically in the direction of the diffuser 16 in the space between the internal vertical walls of the box 2 and the periphery of the coil 8. In practice, the ambient air sucked in is mixed with "healthy" or hygienic air, which is injected from a ventilation unit into the fan coil 1. The air flow drawn into the room is several hundred cubic meters per hour, while the healthy air flow is several tens of cubic meters per hour. Furthermore, the intake of clean air into the fan coil unit 1 is not counter-flow with the air drawn in so as not to reduce the efficiency of the motor 4. In the example, the intake of clean air is carried out at the condensate tray 10.

La surface de la pente 162 du diffuseur 16 redresse le flux d'air ventilé par la roue 6, c'est-à-dire qu'elle transforme un jet d'air globalement vertical en un jet d'air globalement horizontal. L'air est ensuite éjecté par la fente 20 du ventilo-convecteur 1 dans les trois directions F1, F2 et F3. Le fait que le ventilo-convecteur 1 diffuse de l'air à proximité du plafond permet de profiter de l'effet « Coanda », qui se traduit par le fait que le jet d'air « lèche » le plafond et la portée du jet est augmentée.The surface of the slope 162 of the diffuser 16 straightens the air flow ventilated by the impeller 6, that is to say it transforms a generally vertical air jet into a generally horizontal air jet. The air is then ejected through the slot 20 of the fan coil 1 in the three directions F1, F2 and F3. The fact that the fan coil unit 1 diffuses air near the ceiling makes it possible to take advantage of the "Coanda" effect, which results in the fact that the air jet "licks" the ceiling and the range of the jet. is increased.

La majeure partie du flux d'air redressé F4 est diffusée globalement perpendiculairement à un côté du caisson 2, c'est-à-dire selon les axes X2 ou Y2. Cependant, les lignes de flux d'air débouchant au voisinage des déflecteurs 164 sont déviées. Ces lignes de flux longent la paroi rectiligne 170 des déflecteurs 164 et sont dirigées selon une direction F5 parallèle à la paroi 170. La direction F5 est inclinée d'environ 70° par rapport à l'axe X2. Lorsque l'angle A vaut 18°, la direction F5 est inclinée de 72° par rapport à l'axe X2. Les flux d'air issus des déflecteurs 164 percutent donc les flux d'air « droits » F4 et modifient leurs directions. Par conséquent, les jets d'air diffusés en sortie de la fente 20 sur les côtés 160a et 160c et qui résultent de la combinaison des flux d'air « droits » dirigés dans le sens des flèches F4 et des flux d'air déviés selon la direction F5, sont dirigés en moyenne selon la direction F2 ou F3 qui est inclinée par rapport à l'axe X2.Most of the straightened air flow F4 is diffused generally perpendicular to one side of the box 2, that is to say along the axes X2 or Y2. However, the air flow lines emerging in the vicinity of the deflectors 164 are deviated. These flow lines run along the rectilinear wall 170 of the deflectors 164 and are directed in a direction F5 parallel to the wall 170. The direction F5 is inclined by approximately 70 ° with respect to the axis X2. When the angle A is 18 °, the direction F5 is inclined by 72 ° with respect to the axis X2. The air flows from the deflectors 164 collide therefore the “straight” air flows F4 and modify their directions. Consequently, the air jets diffused at the outlet of the slot 20 on the sides 160a and 160c and which result from the combination of the “straight” air flows directed in the direction of the arrows F4 and of the deflected air flows according to the direction F5, are directed on average along the direction F2 or F3 which is inclined with respect to the axis X2.

Ainsi, lorsque deux ventilo-convecteurs 1 sont disposés face-à-face, les jets d'air F3 diffusés par les ventilo-convecteurs l'un envers l'autre, c'est-à-dire provenant de deux bords en vis-à-vis des deux ventilo-convecteurs, et selon les directions F2 et F3, ne se croisent pas frontalement. Ces jets sont en effet déviés selon les directions F2 et F3 qui sont décalées l'une par rapport à l'autre et non-sécantes. Autrement dit, les directions F2 et F3 sont parallèles et non-confondues. L'interaction entre les deux jets d'air est limitée et il n'y a pas, ou peu d'écoulement froid descendant qui se forme.Thus, when two fan coils 1 are placed face to face, the air jets F3 diffused by the fan coils towards each other, that is to say coming from two opposite edges. vis-à-vis the two fan coils, and in directions F2 and F3, do not cross frontally. These jets are in fact deflected in the directions F2 and F3 which are offset with respect to each other and non-intersecting. In other words, the directions F2 and F3 are parallel and not coincident. The interaction between the two air jets is limited and there is little or no downward cold flow that forms.

En variante non représentée, les déflecteurs 164 sont rapportés sur le diffuseur 16, notamment par collage ou soudage.In a variant not shown, the deflectors 164 are attached to the diffuser 16, in particular by gluing or welding.

En variante non représentée, les déflecteurs 164 sont montés sur un diffuseur approprié à un ventilo-convecteur quatre voies. Dans ce cas, le côté 160d du diffuseur 16 diffuse également de l'air et un déflecteur 164 peut être monté de ce côté ou sur le côté opposé si une autre cassette se trouve en face du côté 160d.In a variant not shown, the deflectors 164 are mounted on a diffuser suitable for a four-way fan coil. In this case, side 160d of diffuser 16 also diffuses air and a baffle 164 can be mounted on that side or on the opposite side if another cassette is opposite side 160d.

Les caractéristiques techniques 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 technical characteristics of the variants and embodiments envisaged above can be combined with one another to generate new embodiments of the invention.

Claims (10)

  1. A fan coil (1) integrable in a false ceiling, comprising:
    - a housing (2), and
    - a diffuser (16), which delimits with the housing a diffusion slot (20), adapted to diffuse air
    jets in at least three average directions (F1, F2, F3) contained within a diffusion plane (P16), characterized in that it further comprises at least one baffle (164), which is mounted on the diffuser (16) and is adapted to direct at least one of the diffused air jets through a slot (20) in an average direction (F2, F3) inclined with respect to an axis (X2) perpendicular to a side (22) of the housing (2).
  2. A fan coil according to claim 1, characterized in that the one or more baffles (164) are disposed, on the air flow path, downstream of a sloped surface (162), configured to refresh the air in a direction (F1, F2, F3) contained within the diffusion plane (P16).
  3. A fan coil according to one of the claims 1 and 2, characterized in that the diffuser (16) comprises a frame that delimits the lower edge (161) of the slot (20) and in that each baffle (164) is disposed in the vicinity of a corner (16A, 16C) of the diffuser and comprises a surface (171) that extends parallel to a side (160a, 160c) of the diffuser.
  4. A fan coil according to one of the previous claims, characterized in that each baffle (164) comprises a rectilinear wall (170) and a convex wall (172) that extend between two edges (166, 168), one of which is a trailing edge (166).
  5. A fan coil according to claim 4, characterized in that the convex wall (172) comprises a rectilinear portion (171) that delimits the trailing edge (166) and that marks with the rectilinear wall an angle (A) comprised between 10° and 40 °.
  6. A fan coil according to one of the claims 4 or 5, characterized in that each baffle (164) has a length (L), calculated as the projection of the distance between the trailing edge (166) and the other edge (168) on a plane (P1) extending the rectilinear portion (171) of the convex wall (172), which is comprised between 30 mm and 100 mm.
  7. A fan coil according to one of the claims 4 to 6, characterized in that each baffle (164) has a width (/), calculated as the distance from the edge (168) opposite the trailing edge (166) to a plane (P1) extending the rectilinear portion (171) of the convex wall (172), which is comprised between 5 and 85 mm.
  8. A fan coil according to one of the preceding claims, characterized in that the one or more baffles (164) are set back from an external edge (161) of the diffuser (16), particularly at a distance (d1) of 15 mm.
  9. A fan coil according to one of the preceding claims, characterized in that the one or more baffles (164) have a thickness (e164) that is greater than or equal to the thickness of the slot (20).
  10. An assembly of at least two fan coils (1) belonging to an air conditioning unit, those fan coils being disposed face-to-face in a false ceiling, the assembly being characterized in that the fan coils (1) are according to one of the preceding claims and are arranged in such a way that, when operating, air jets from two fan coil edges that face one another are diverted in average directions (F2, F3) that are set off from one another and are non-intersecting.
EP15157907.5A 2014-03-07 2015-03-06 Fan coil suitable for recessing in a false ceiling and set of at least two fan coils belonging to an air-conditioning system Active EP2927607B1 (en)

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FR1451872A FR3018342B1 (en) 2014-03-07 2014-03-07 FAN CEILING INTEGRAL FAN CONVECTOR AND AT LEAST TWO FAN PANS BELONGING TO AIR CONDITIONING FACILITY

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FR3018342A1 (en) 2015-09-11
RU2015107987A3 (en) 2018-09-28
EP2927607A1 (en) 2015-10-07
RU2015107987A (en) 2016-09-27
RU2672434C2 (en) 2018-11-14
FR3018342B1 (en) 2019-01-25

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