EP2927607A1 - 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 PDFInfo
- Publication number
- EP2927607A1 EP2927607A1 EP15157907.5A EP15157907A EP2927607A1 EP 2927607 A1 EP2927607 A1 EP 2927607A1 EP 15157907 A EP15157907 A EP 15157907A EP 2927607 A1 EP2927607 A1 EP 2927607A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- fan coil
- diffuser
- fan
- deflector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004378 air conditioning Methods 0.000 title claims description 8
- 238000009792 diffusion process Methods 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims description 5
- 239000003570 air Substances 0.000 description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 230000003993 interaction Effects 0.000 description 6
- 238000011084 recovery Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000012800 visualization Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- 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
- F24F1/0011—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
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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
- 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
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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
- F24F13/02—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
- the invention relates to a fan coil integrable to a false ceiling and a set of at least two of these fan coil units arranged vis-à-vis in the false ceiling.
- fan coil units which are housed in the false ceiling of the rooms.
- These fan coils are commonly called “cassettes”. They comprise a rectangular box inside which is arranged a motor-fan unit ensuring the suction and the discharge of the air inside the room, a water battery for the thermal treatment of the air and a condensate tray to recover droplets from condensation.
- These fan coil units also include a diffuser incorporating a filter and a recovery grid.
- cassettes broadcast air in four directions, that is to say on all four sides of the box, while other cassettes only diffuse air on three sides of the box.
- 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 of the room or close to a wall.
- EP-A-2,206,988 discloses a four-way cassette which aims to diffuse air in the widest possible way on its periphery.
- the cassette includes deflectors for orienting the air jets diffused around the cassette in a vertical plane. These baffles are further shaped so that air is diffused homogeneously 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 that meet frontally.
- cooling mode the interaction between two jets of cold air causes a cold downflow between the two cassettes which is a source of discomfort for the users of the room. It is therefore important to minimize or avoid the interaction between the jets blown by two successive cassettes.
- certain ranges of cassettes are equipped with adjustable nozzles that direct the air jets down to avoid interaction with the air jet produced by an adjacent cassette.
- directing the air jet downwards the air is directly pulsed on the users of the room and they can feel the unpleasant feeling of a cold draft.
- the steerable nozzles add space to the cassette and do not allow the use of a versatile cassette, in which only the diffuser is changed from a "three-way" configuration to a "four-way” configuration.
- E-A-1 884 718 discloses a ceiling fan coil comprising baffles arranged inside the cassette at the corner edges of the cassette. These baffles are used to modify the internal flow of air, by deflecting the air blown towards the corner edges to one side of the cassette. This makes it possible to limit the problems of recirculation in the angles and thus to avoid acoustic discomfort.
- 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 the interactions between the air jets diffused by two cassettes arranged face-to-face .
- the invention more particularly intends to remedy by proposing a simplified fan coil, which makes it possible to limit the interaction of the air jets with those blown by a fan coil arranged in facing relation.
- the invention relates to a fan coil integrable with a false ceiling, comprising a box and a diffuser, which delimits with the box a diffusion slot, adapted to diffuse air jets in at least three mean directions contained in a broadcast plan.
- the fan coil further comprises at least one deflector, which is mounted on the diffuser and is adapted to direct at least one of the diffused air jets through the slot in a sloping mean direction relative to an axis perpendicular to one side of the box.
- the baffle or deflectors mounted on the diffuser of the fan coil can deflect the jet of air directed to an adjacent cassette.
- the jet of air of the fan coil disposed next to it is deflected in a similar manner, so that the two jets do not meet frontally.
- the invention also relates to an assembly 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 previously described and are arranged so that, in operation, air jets coming from two edges facing the fan coils are deflected in mean directions offset relative to one another. to the other and non-secant.
- a fan coil 1 On the figure 1 is shown a fan coil 1.
- This fan coil 1 is intended to be housed in a false ceiling of a room.
- This type of fan coil is commonly called “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 bottom wall 2a.
- X2 and Y2 are two axes perpendicular to the two pairs of opposite sides 22 of the box 2.
- the axes X2 and Y2 are orthogonal because of the rectangular section of the box 2.
- means M1 suction and discharge air inside the room 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 causes the wheel 6 to rotate about a Z6 axis, which is substantially vertical mounted configuration of the cassette in the false ceiling.
- the axis Z6 is perpendicular to the axes X2 and Y2.
- a water battery 8 is arranged coaxially around the wheel 6.
- This water battery 8 has a tubular geometry. It can be fed with hot water or cold water, depending on the type of heat treatment desired.
- the water battery 8 is a heat exchanger which is partially received in a circular housing 100 of a condensate pan 10.
- the condensate tray 10 is disposed below the water battery 8. In air conditioning mode, the air is ventilated by the wheel 6 is cooled and a portion of the air is likely to condense.
- the condensate tray 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 bottom wall 2a of the box 2, so that it delimits 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 bottom wall 2a of the casing 2.
- the diffuser 16 comprises a recovery grid 12, which is fixed in a frame 18 assembled on the bottom wall of the diffuser 16.
- a seal 14 seals between the parts 10 and 16 on the side devoid of the slot 20.
- the diffuser 16 is adapted to distribute air generally in three mean 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 of air along one of the three sides of the slot 20, that is to say the direction of the jet generally blown by this side of the slot.
- 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 air flow lines emitted on a side of the slot.
- the three directions F1, F2 and F3 are included in a diffusion plane P16 which corresponds generally to the surface of the ceiling in mounted configuration of the cassette 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 opposite direction. They are inclined with respect to the axis X2.
- the F1 direction is oblique with respect to the directions F2 and F3.
- the four-way cassettes differ from the fan coil 1 only from the diffuser they use. So we are talking about versatile cassettes.
- the diffuser 16 generally has the shape of a rectangular frame comprising a rectangular cutout 016 for receiving a filter 176.
- the filter 176 makes it possible to filter the fine particles or other dust contained in the air, so as not to foul the fan coil 1 and to "cut down" the particulate pollution of the room.
- the filter 176 is slightly elevated to facilitate its visualization.
- the filter 176 is held by the return grid 12 on the one hand and by a shoulder located in the inner periphery of the bottom opening of the condensate pan 10.
- the latches 177 make it possible to hold the diffuser 16 in place while the fitter tightening fastening screws in tapped holes at the four corners of the diffuser 16.
- 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 along the directions F2 and F3, while the side 160b diffuses the jet of air directed along the direction F1.
- the 160d side is thicker than the other sides and its thickness is in practice greater than or equal to the thickness of the slot 20 so that the air can not be diffused by 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 blank 016. 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.
- the diffuser 16 includes an outer rectangular edge 161, which is a lower edge of the slot 20.
- Two deflectors 164 are disposed in the vicinity of two opposite corners of the diffuser 16, respectively 16A and 16C corners shown at the top left and at the bottom right at the figure 3 . These two baffles 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 in 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 is facing the outer edge 161 of the diffuser 16 and the rectilinear wall 170 is turned towards the sloping surface 162.
- the rectilinear wall 170 guides the flow of air F4 opening near the corner 16A or 16C, during 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 back by a distance d1 with respect to the outer edge 161 of the diffuser 16. This has the advantage of limiting its appearance for an outside observer to preserve the impression of a seamless 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 disposed 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 baffle 164 is flush with or in contact with the inner wall of the box 2. Thus, there is no air leak passing over the baffle 164 through the slot 20, that is to say between the deflector 164 and the bottom wall 2a of the box 2.
- two diffusers 16 are shown side-by-side and in plan view. These diffusers are separated by a distance d2 between 1.2 m and 1.35 m, which corresponds to the distance observed in practice between two adjacent cassettes. The rest of the cassette components are omitted for a better visualization of the flows.
- the ambient air of the part is sucked through the return grid 12 due to the depression generated by the rotation of the wheel 6 about the axis Z6.
- the air passes through the recovery grid 12 and the filter 176 of the diffuser 16.
- the air is then centrifugally expelled by the blades of the wheel 6 and passes through the water coil 8.
- the air passing through the water coil 8 cools and is guided vertically towards the diffuser 16 in the space between the internal vertical walls of the box 2 and the periphery of the battery 8.
- the ambient air sucked is mixed. with a "healthy" or hygienic air, which is injected from a ventilation plant into the fan coil 1.
- the air flow drawn into the room is several hundred cubic meters per hour, while the flow of clean air is several tens of cubic meters per hour.
- the arrival of healthy air in the fan coil 1 is not counter-flow with the air sucked to not reduce the efficiency of the engine 4.
- the arrival of clean air is carried out at the condensate tray 10.
- the surface of the slope 162 of the diffuser 16 straightens the air flow ventilated by the wheel 6, that is to say that 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 1 diffuses air near the ceiling allows to take advantage of the "Coanda” effect, which is reflected by the fact that the air jet "licks" the ceiling and the range of the jet is increased.
- the air flow lines emerging in the vicinity of the deflectors 164 are deflected. 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 at about 70 ° with respect to the axis X2. When the angle A is 18 °, the direction F5 is inclined 72 ° with respect to the axis X2.
- 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 "right" air flows directed in the direction of the arrows F4 and the deflected air flows according to the direction F5, are directed on average in the direction F2 or F3 which is inclined relative to the axis X2.
- the air jets F3 diffused by the fan convectors toward each other, that is to say coming from two edges facing each other. with respect to the two fan coils, and according to the directions F2 and F3, do not cross frontally. These jets are indeed deflected in the directions F2 and F3 which are offset relative to each other and non-intersecting. In other words, the directions F2 and F3 are parallel and not-confused. The interaction between the two air jets is limited and there is no, or little, cold descending flow that forms.
- baffles 164 are reported on the diffuser 16, in particular by gluing or welding.
- the deflectors 164 are mounted on a suitable diffuser to a four-way fan coil.
- the side 160d of the diffuser 16 also diffuses air and a deflector 164 can be mounted on that side or on the opposite side if another cassette is opposite the 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)
Abstract
Ce ventilo-convecteur est intégrable à un faux-plafond et comprend 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 (F1, F2, F3) contenues dans un plan de diffusion. Ce 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 (F2, F3) inclinée par rapport à un axe (X2) perpendiculaire à un côté du caisson.This fan coil is integrable with a false ceiling and comprises a box, and a diffuser, which delimits with the box a diffusion slot, adapted to diffuse air jets in at least three mean directions (F1, F2, F3 ) contained in a dissemination plan. This fan coil further comprises at least one deflector, which is mounted on the diffuser and is adapted to direct at least one of the air jets diffused through the slot in a mean direction (F2, F3) inclined by relative to an axis (X2) perpendicular to one side of the box.
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 integrable to a false ceiling and a set of at least two of these fan coil units arranged vis-à-vis 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 to equip the buildings of fan coil units, which are housed in the false ceiling of the rooms. These fan coils are commonly called "cassettes". They comprise a rectangular box inside which is arranged a motor-fan unit ensuring the suction and the discharge of the air inside the room, a water battery for the thermal treatment of the air and a condensate tray to recover droplets from condensation. These fan coil units also include a diffuser incorporating a filter and a recovery grid.
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.
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 adjustable nozzles that direct the air jets down to avoid interaction with the air jet produced by an adjacent cassette. However, directing the air jet downwards, the air is directly pulsed on the users of the room and they can feel the unpleasant feeling of a cold draft. In addition, the steerable nozzles add space to the cassette and do not allow the use of a versatile 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 corner edges of the cassette. These baffles are used to modify the internal flow of air, by deflecting the air blown towards the corner edges to one side of the cassette. This makes it possible to limit the problems of recirculation in the angles and thus to avoid acoustic discomfort. 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 the interactions between the air jets diffused by two cassettes arranged 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 to these drawbacks that the invention more particularly intends to remedy by proposing a simplified fan coil, which makes it possible to limit the interaction of the air jets with those blown by a fan coil arranged in facing relation.
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 integrable with a false ceiling, comprising a box and a diffuser, which delimits with the box a diffusion slot, adapted to diffuse air jets in at least three mean directions contained in a broadcast plan. According to the invention, the fan coil further comprises at least one deflector, which is mounted on the diffuser and is adapted to direct at least one of the diffused air jets through the slot in a sloping mean direction relative 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 baffle or deflectors mounted on the diffuser of the fan coil can deflect the jet of air directed to an adjacent cassette. The jet of air of the fan coil disposed next to it is deflected in a similar manner, 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.
- The at least one baffle is disposed in the air flow path downstream of a sloped surface configured to rectify air in a direction contained in the diffusion plane.
- The diffuser includes a frame that delimits a lower edge of the slot and each baffle is disposed adjacent a corner of the diffuser and includes a surface that extends parallel to a 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 baffle or baffles are positioned recessed with respect to an outer edge of the diffuser, in particular at a distance of 15 mm.
- The baffle or baffles 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 an assembly 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 previously described and are arranged so that, in operation, air jets coming from two edges facing the fan coils are deflected in mean directions offset relative to 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 lafigure 1 en configuration assemblée, - la
figure 3 est une vue en perspective et à plus grande échelle d'un diffuseur appartenant au ventilo-convecteur desfigures 1 et2 , - la
figure 4 est une vue de face et à plus grande échelle d'un déflecteur appartenant au diffuseur de lafigure 3 , - la
figure 5 est une vue en perspective du déflecteur de lafigure 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
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 of thefigure 1 in assembled configuration, - the
figure 3 is a perspective view on a larger scale of a diffuser belonging to the fan coil offigures 1 and2 , - the
figure 4 is a front view and on a larger scale of a deflector belonging to the diffuser of thefigure 3 , - the
figure 5 is a perspective view of the deflector of thefigure 4 , and - the
figure 6 represents a schematic arrangement of two diffusers belonging to two fan coils arranged face to face, in an air conditioning installation.
Sur la
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 "up", "down", "upper" and "lower" directions must be interpreted in relation to a mounted configuration of the fan coil 1 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
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
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 battery 8 is arranged coaxially around the
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
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
Comme visible à la
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, the four-way cassettes differ from the fan coil 1 only from the diffuser they use. So we are talking about versatile cassettes.
Comme mieux visible à la
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 016. 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
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
Dans la suite de la description, un seul déflecteur 164 est décrit puisque les deux déflecteurs 164 sont identiques.In the following description, a
Comme mieux visible aux
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
Comme visible à la
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
Sur la
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 of the part is sucked through the
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
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 rectified air flow F4 is diffused generally perpendicularly to one side of the
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 convectors 1 are arranged face-to-face, the air jets F3 diffused by the fan convectors toward each other, that is to say coming from two edges facing each other. with respect to the two fan coils, and according to the directions F2 and F3, do not cross frontally. These jets are indeed deflected in the directions F2 and F3 which are offset relative to each other and non-intersecting. In other words, the directions F2 and F3 are parallel and not-confused. The interaction between the two air jets is limited and there is no, or little, cold descending flow that forms.
En variante non représentée, les déflecteurs 164 sont rapportés sur le diffuseur 16, notamment par collage ou soudage.In variant not shown, the
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
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 features of the variants and embodiments envisaged above can be combined with each other to generate new embodiments of the invention.
Claims (10)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
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 |
Publications (2)
Publication Number | Publication Date |
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EP2927607A1 true EP2927607A1 (en) | 2015-10-07 |
EP2927607B1 EP2927607B1 (en) | 2021-04-28 |
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ID=50877450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP15157907.5A Active EP2927607B1 (en) | 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 |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2927607B1 (en) |
FR (1) | FR3018342B1 (en) |
RU (1) | RU2672434C2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108954698A (en) * | 2017-05-17 | 2018-12-07 | 奥克斯空调股份有限公司 | A kind of control method of air conditioner indoor unit |
FR3122095A1 (en) * | 2021-04-22 | 2022-10-28 | Philippe Roux | AIR TREATMENT AND PURIFICATION DEVICE BY PHOTOCATALYSIS |
Citations (4)
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EP1688677A1 (en) * | 2003-11-27 | 2006-08-09 | Daikin Industries, Ltd. | Air conditioner |
EP1884718A2 (en) * | 2006-08-03 | 2008-02-06 | LG Electronics Inc. | Air Conditioner |
EP2206988A1 (en) | 2007-10-25 | 2010-07-14 | Toshiba Carrier Corporation | Ceiling-embedded air conditioner |
EP2413058A1 (en) * | 2009-03-27 | 2012-02-01 | Daikin Industries, Ltd. | Air conditioner, casing, and decorative panel |
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JP2000171052A (en) * | 1998-12-04 | 2000-06-23 | Hitachi Ltd | Ceiling flush type air conditioner |
JP3612622B2 (en) * | 2000-11-06 | 2005-01-19 | 株式会社日立製作所 | Indoor unit for air conditioner |
KR100405982B1 (en) * | 2001-02-12 | 2003-11-14 | 엘지전자 주식회사 | Flow path structure for cassette typed air conditioner |
JP3972894B2 (en) * | 2003-11-27 | 2007-09-05 | ダイキン工業株式会社 | Air conditioner |
JP2006189212A (en) * | 2005-01-07 | 2006-07-20 | Shin Nippon Air Technol Co Ltd | Ceiling structure for ceiling blowout type air conditioning, and cooling/heating equipment using the same |
KR101153612B1 (en) * | 2005-02-25 | 2012-06-18 | 엘지전자 주식회사 | A ceiling embeddd air conditioner and mounting structure of the same |
SE532506C2 (en) * | 2008-03-31 | 2010-02-09 | Lindab Ab | Method and apparatus for ventilating a space |
-
2014
- 2014-03-07 FR FR1451872A patent/FR3018342B1/en active Active
-
2015
- 2015-03-06 EP EP15157907.5A patent/EP2927607B1/en active Active
- 2015-03-06 RU RU2015107987A patent/RU2672434C2/en active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP1688677A1 (en) * | 2003-11-27 | 2006-08-09 | Daikin Industries, Ltd. | Air conditioner |
EP1884718A2 (en) * | 2006-08-03 | 2008-02-06 | LG Electronics Inc. | Air Conditioner |
EP2206988A1 (en) | 2007-10-25 | 2010-07-14 | Toshiba Carrier Corporation | Ceiling-embedded air conditioner |
EP2413058A1 (en) * | 2009-03-27 | 2012-02-01 | Daikin Industries, Ltd. | Air conditioner, casing, and decorative panel |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108954698A (en) * | 2017-05-17 | 2018-12-07 | 奥克斯空调股份有限公司 | A kind of control method of air conditioner indoor unit |
FR3122095A1 (en) * | 2021-04-22 | 2022-10-28 | Philippe Roux | AIR TREATMENT AND PURIFICATION DEVICE BY PHOTOCATALYSIS |
Also Published As
Publication number | Publication date |
---|---|
FR3018342A1 (en) | 2015-09-11 |
RU2015107987A3 (en) | 2018-09-28 |
RU2015107987A (en) | 2016-09-27 |
RU2672434C2 (en) | 2018-11-14 |
EP2927607B1 (en) | 2021-04-28 |
FR3018342B1 (en) | 2019-01-25 |
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