EP2409089B1 - Dispositif d'alimentation en air - Google Patents

Dispositif d'alimentation en air Download PDF

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Publication number
EP2409089B1
EP2409089B1 EP10753774.8A EP10753774A EP2409089B1 EP 2409089 B1 EP2409089 B1 EP 2409089B1 EP 10753774 A EP10753774 A EP 10753774A EP 2409089 B1 EP2409089 B1 EP 2409089B1
Authority
EP
European Patent Office
Prior art keywords
air
casing
room
wall
supply device
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.)
Active
Application number
EP10753774.8A
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German (de)
English (en)
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EP2409089A1 (fr
EP2409089A4 (fr
Inventor
Bengt Sellö
Martin SELLÖ
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Inventiair AB
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Inventiair AB
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Publication date
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Publication of EP2409089A1 publication Critical patent/EP2409089A1/fr
Publication of EP2409089A4 publication Critical patent/EP2409089A4/fr
Application granted granted Critical
Publication of EP2409089B1 publication Critical patent/EP2409089B1/fr
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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
    • F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
    • F24F1/0067—Indoor units, e.g. fan coil units characterised by heat exchangers by the shape of the heat exchangers or of parts thereof, e.g. of their fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/46—Air flow forming a vortex

Definitions

  • the present invention relates to an air supply device for blowing air into a room, possibly provided with a heat exchanger for the supply of warm or cold air.
  • the device is of the kind being intended to be arranged adjacent to a wall, in the floor or some other structural part of a room, e.g. adjacent to a pillar.
  • the air supply device is of the kind comprising an air feed tube, a box-like casing accommodating said feed tube, and feed openings in said feed tube for feeding supply air via the interior of the casing, via a supply air opening in a casing, and thereupon into said room.
  • Devices of the kind indicated above are previously known, and are used frequently in public and private buildings. They can also be used in vehicles and vessels, such as air craft and ships.
  • Document EP 1 344 990 A2 discloses an air supply device according to the preamble of claim 1.
  • a drawback with existing apparatus is that the air being blown into the room is often too cold or too hot, since it often has to be many degrees warmer or colder than the average room temperature in the lower part of the room. Moreover, if the air velocity is too high, this will also be uncomfortable to persons staying in the room.
  • a main object of the present invention is to provide an air supply device, which will give a well controlled air flow into the room, without too high air velocity but still maintaining a steady air flow, whereby the climate in the room is kept comfortable.
  • the casing of the device has two opposite, first and second side walls and a third wall therebetween where the supply air opening is located, and two opposite, parallel, longitudinally extending pocket portions formed inside the casing on each side of the supply air opening, adjacent to the first and second side walls, respectively, and in that the feed openings in the feed tube are located and configured so as to bring the inlet air to flow into the pocket portions and cause a tornado-like air flow in each pocket portion, whereby the air circulating in the tornado-like air flow interacts with air from the room before it flows out through the supply air opening into the room.
  • the feed openings in the feed tube may comprise at least two rows of air nozzles or openings, each row extending longitudinally along the casing and the nozzles or openings being directed obliquely toward the first or the second side wall.
  • such rows of air nozzles or openings are configured to cause an air curtain striking at an oblique angle against the first or the second side wall, whereupon the air is deflected and transformed into the above-mentioned tornado-like air flow in the associated pocket portion.
  • a stable air flow can be maintained even for a relatively low air flow.
  • the rows of air nozzles or openings should be situated so as to direct the air curtains obliquely towards the respective pocket portion on each side of the supply air opening.
  • the pocket portions may be defined by straight wall portions at right angles to each other, e.g. defined by a part of the first or the second side wall, a part of the third wall, and flange walls extending along the supply air opening inwardly from the third wall into the interior of the casing.
  • each pocket portion may be defined, at least partly, by a semi-cylindrical or curved wall portion merging with the first or the second side wall of the casing.
  • heat exchangers may be arranged in one or both of the pocket portions, e.g. in the form of longitudinally extending pipes for leading through a hot or a cold fluid. This will give a particularly efficient thermal exchange, since the inlet air is circulating in the pocket and will thereby interact effectively with the hot or cold pipes.
  • the pipes may be provided with flanges or the like to make the heat exchange even more effective.
  • the box-like casing may be secured to a wall of the room, either horizontally, or standing on the floor, but preferably close to a wall. It is also possible to mount the air supply device adjacent to some other structural part of the room or at the floor, either flush with the floor or slightly underneath. In the latter case, it is advantageous to provide an extended chamber adjacent to the supply air opening and to mount an upper grid flush with the floor for passing through the inlet air into the room.
  • the air supply device 1 shown in figures 1, 2 and 3 comprises a box-like, elongated casing 2, a feed tube 3 extending inside and along the casing 2 and a supply air opening 4 in a wall of the casing.
  • the elongated casing 2 has, in this embodiment, a rectangular cross-section ( figure 3 ) with upper and lower, first and second walls 21 and 22 and a third wall 23, extending between the opposite walls 21, 22 and being provided with the above-mentioned supply air opening 4.
  • the latter extends in the longitudinal direction of the casing along a large part of the third wall 23, as is clearly seen in figure 1 .
  • the longitudinal extension of the supply air opening 4 may be shorter or longer than the one shown in figure 1 .
  • the feed tube 3 is connected to an air inlet conduit or some other source (not shown) for fresh inlet air. In the illustrated embodiment, it extends along the full length of the casing 2.
  • the air feed tube 3 is cylindrical with a circular cross-section ( figure 3 ) in this embodiment, but the cross-sectional shape is not critical.
  • an end wall At the left end of the casing, as shown in figure 1 , an end wall (not shown) will close the casing 2, and the feed pipe 3 should either be provided with a closing end wall or be connected to an extended inlet air conduit.
  • the air feed tube 3 is provided with four rows of small feed openings or nozzles 31, 32 and 33, 34, these rows being parallel to each other and extending along the length of the tube 3, at least along a length corresponding to the supply air opening 4.
  • feed openings 31-34 are constituted by relatively small circular holes, preferably with a diameter not exceeding 5 mm, in particular about 4 mm and not being smaller than 3 mm.
  • these openings may be formed by punched holes having a collar, or they may alternatively be made by a separate insert portion being formed so as to produce a well-defined air stream.
  • the air streams from the row of holes 31-34 will form an air curtain directed radially outwardly from each row of holes.
  • the feed openings in the form of rows of holes 31-34 should be arranged in such a way as to direct the air curtains C1, C2 and C3, C4 (see fig. 3 ) obliquely against the first and second side walls 21 and 22, respectively, in a direction towards the third wall 23.
  • the air curtains C1-C4 will strike at an oblique angle against the first and second side walls 21, 22 of the casing, and then they will be deflected and transformed into a tornado-like air flow in an adjacent region of the casing, to the right in figure 3 .
  • the casing portions on each side of the inlet opening 4 are formed as a pocket-like configuration serving to lead the flowing air into an elongated, circulating air flow having a tornado-like configuration. This is illustrated schematically in figure 3 by arrows T.
  • the pocket-like portions 25 of the casing are constituted by a portion of the first and second side wall 21, 22, respectively (to the right in figure 3 ), an upper or lower part of the third wall 23, and a flange wall extending along the supply air opening 4 inwardly from the third wall 23 into the interior of the casing 2.
  • These flange walls are denoted 24.
  • the supply air opening is configured like a rectangular box with open sides (see also figure 1 ).
  • the curtains C1, C2, C3, C4 or jet streams (possibly being distributed in the longitudinal direction) must have a certain velocity, typically in the interval 8-14 m/s. Also, the oblique direction of these curtains or jet streams C1, C2 and C3, C4 will facilitate the formation of the tornado-like air flows in the two pocket portions 25.
  • the holes or nozzles 31-34 may be situated in another part of the air feed tube 3, e.g. so as to create an increased air pressure in the left part of the interior of the casing ( figure 3 ), whereby air will flow to the right into the respective pocket portions 25 of the casing.
  • the cross-sectional shape of the feed tube 3 may be different from the cylindrical shape as shown, e.g. it may have a rectangular cross section, provided that the feed openings are arranged so as to bring the inlet air into the two pocket portions of the casing.
  • the pocket portions of the casing may be modified so as to facilitate the formation of tornado-like air flows.
  • An example is shown in figure 4 , where each pocket portion 25' is formed by a part of the wall 21', 22', the inwardly directed flange 24' and a semi-cylindrical or curved wall portion 23' therebetween.
  • this modified embodiment there will be no sharp corners inside the pocket portions 25', so the circular tornado-like air flow will be facilitated.
  • the embodiment of figure 4 is just like the previous embodiment, and the same reference numerals are used for the same structural parts.
  • a further aspect of the present invention is the possibility of arranging heat exchangers 5 in the interior of the casing 2, preferably in one or both of the pocket portions 25'.
  • the heat exchangers may be in the form of electrical heating elements or, preferably, in the form of pipes 51, 52 for leading through a hot or a cold fluid, such as water or water mixed with some other liquid, e.g. ethanol. Since these heat exchangers 5 are located inside the tornado-like air flow, the thermal exchange will be particularly effective.
  • the pipes 5 illustrated schematically in the drawings may be connected to non-illustrated sources for hot and/or cold fluids. Also, in such connected conduit systems, there may be control apparatus for controlling the temperature above or below the room temperature, or totally switching off the heat exchangers.
  • the pipes may also by provided with radial flanges or the like in order to further increase the thermal exchange.
  • the net air stream from the air supply device 1 has a strong momentum, although the air velocity is not very great, and the somewhat diffuse or turbulent air stream S will not be disturbing to any person being present in the immediate vicinity of the air supply device. Rather, the net air flow will be comfortable to human beings, and there will also be a mixing of the ambient room air and the inlet air inside the casing. So, in case the inlet air is colder or warmer than the room air temperature, there will be some equalization of the temperature inside the casing. In particular, in the case of supplying cool air when the room air is warm, the air stream S flowing into the room will be somewhat pre-warmed before leaving the supply air opening 4. Accordingly, the ambient room air will also participate in the thermal exchange, by way of the backward flow of air B through the supply air opening 4.
  • the main object of the invention will be achieved by the air supply device 1 described above, in particular so as to obtain a comfortable climate in the room.
  • FIGS 5, 6 and 7 some examples of arranging the air supply device are shown.
  • the second wall 22 of the casing 2 is secured to a wall W of the room, with the longitudinal direction of the casing 2 being oriented horizontally, at some distance above the floor F of the room; and the supply air opening 4 being directed downwards against the floor F.
  • the first wall 21 of the casing 2 can be secured to a wall so that the supply air opening 4 is directed downwards against the floor F.
  • the distance between the supply air opening 4 and the floor F can be approximately 100 mm for good performance of the air supply device, but other distances are possible, which is understood by the skilled person.
  • the air supply device 1 is mounted standing on the floor F adjacent to a wall W with its fourth side wall 26 secured to the wall.
  • the elongated supply air opening 4 (non visible) is oriented in the vertical direction.
  • the air supply device 1 is mounted in a chamber or channel 6 underneath the floor surface. There is an extended portion 7 of the chamber adjacent to the supply air opening 4. The supply air will be passed through the extended portion 7 of the chamber through an upper grid 8.
  • the air supply device according to the invention may be modified in many ways within the scope of the appended claims.
  • the heat exchanger or exchangers 5, if any, may be arranged differently, e.g. on the other side of the feed tube 3 (to the left in figure 3 ).
  • the feed tube 3 may be integrated with the casing, so that it will be partly defined by a casing wall, e.g. the fourth wall 26 as indicated above.
  • the feed tube may alternatively have a different cross-sectional shape.
  • the supply air opening 4, defined by flange walls portions, may be slightly inclined (upwards or downwards in figure 3 ).
  • control equipment such as control equipment, air flow regulating devices, temperature sensors, or the like.
  • the air supply device 1 As to the mounting of the air supply device 1, it can be located and positioned in any manner, as desired, e.g. at some different structural part of the room, for instance at a pillar or a partition or the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Duct Arrangements (AREA)

Claims (12)

  1. Dispositif d'apport d'air (1) pour souffler de l'air dans une pièce, comprenant un tube d'alimentation en air (3), un boîtier de type caisson (2) logeant ledit tube d'alimentation (3) et comprenant une première et une deuxième paroi latérale (21, 22) ainsi qu'une troisième paroi (23, 23') placée entre elles et dans laquelle se situe une ouverture d'air fourni (4), et des ouvertures d'alimentation (31, 32, 33, 34) aménagées dans ledit tube d'alimentation (3) destinées à alimenter en air fourni, par l'intermédiaire de l'intérieur du boîtier (2) et par l'intermédiaire de ladite ouverture d'air fourni (4), ladite pièce,
    dans lequel
    - ledit boîtier est pourvu de deux parties de poche latérale (25) s'étendant longitudinalement, parallèles et opposées qui sont formées à l'intérieur du boîtier (2) de chaque côté de ladite ouverture d'air fourni (4), respectivement à proximité desdites première et deuxième parois latérales (21, 22), et
    - lesdites ouvertures d'alimentation (31, 32, 33, 34) dans ledit tube d'alimentation (3) sont situées et conçues de façon que l'air entrant s'écoule dans lesdites parties de poche latérale (25) et qu'un écoulement d'air de type tourbillon (T) soit créé dans chaque partie de poche latérale (25), de telle sorte que l'air circulant à haute vitesse dans ledit écoulement d'air de type tourbillon interagit dans lesdites parties de poche latérale avec l'air aspiré depuis la pièce, le courant d'air net sortant par lesdites ouvertures d'alimentation étant ainsi irrégulier et turbulent, mais cependant continu avec une forte quantité de mouvement,
    dans lequel lesdites deux parties de poche latérale (25) ainsi que l'emplacement et la configuration desdites ouvertures d'alimentation (31, 32, 33, 34) ont pour objectif de faire s'écouler l'air fourni dans ledit intérieur du boîtier (2) selon un modèle circulaire et de le mélanger avec l'air de la pièce qui est aspiré par ladite ouverture d'air fourni avant de le souffler dans ladite pièce,
    caractérisé en ce que chacune desdites parties de poche latérale (25) est définie par:
    - une partie de ladite première ou deuxième paroi latérale (21, 22)
    - une partie de ladite troisième paroi (23) et
    - une partie de rebord (24) s'étendant le long de ladite ouverture d'air fourni (4) et dirigée vers l'intérieur dudit boîtier (2) à partir de ladite troisième paroi (23).
  2. Dispositif d'apport d'air selon la revendication 1, dans lequel lesdites ouvertures d'alimentation (31, 32, 33, 34) aménagées dans ledit tube d'alimentation (3) comprennent au moins deux rangées de buses d'air (31, 32, 33, 34), chaque rangée s'étendant longitudinalement le long du boîtier (2) et les buses étant dirigées obliquement vers au moins une desdites première et deuxième parois latérales (21, 22).
  3. Dispositif d'apport d'air selon la revendication 2, dans lequel lesdites au moins deux rangées de buses d'air (31, 32, 33, 34) sont conçues pour créer un rideau d'air (C1, C2, C3, C4) frappant à angle oblique lesdites première et deuxième parois latérales (21, 22) dudit boîtier (2), l'écoulement d'air étant ainsi dévié et transformé en ledit écoulement d'air de type tourbillon (T) dans ladite partie de poche latérale (25) associée.
  4. Dispositif d'apport d'air selon la revendication 2, dans lequel lesdites rangées de buses d'air (31, 32, 33, 34) comprennent, de chaque côté opposé auxdites première et deuxième parois latérales (21, 22) du boîtier (2), au moins deux rangées parallèles (31, 32 et 33, 34) de buses.
  5. Dispositif d'apport d'air selon la revendication 1, dans lequel chacune desdites parties de poche (25') est au moins partiellement définie par une partie de paroi incurvée (23') respectivement jointe à ladite première ou ladite deuxième paroi latérale (21', 22').
  6. Dispositif d'apport d'air selon la revendication 1, dans lequel un échangeur de chaleur longitudinal (5) est agencé dans au moins une desdites parties de poche latérale (25).
  7. Dispositif d'apport d'air selon la revendication 6, dans lequel ledit échangeur de chaleur longitudinal (5) comprend des tuyaux s'étendant longitudinalement (51, 52) destinés à conduire un fluide chaud ou froid.
  8. Dispositif d'apport d'air selon la revendication 1, dans lequel ledit boîtier (2) comprend une quatrième paroi (26) facilitant également le montage du dispositif d'apport d'air sur un mur (W) de ladite pièce.
  9. Dispositif d'apport d'air selon la revendication 8, dans lequel ladite ouverture d'air fourni (4) dans ledit boîtier est prévue pour, lors du montage du dispositif sur un mur (W) de ladite pièce, s'étendre sensiblement dans une direction horizontale.
  10. Dispositif d'apport d'air selon la revendication 8, dans lequel ladite ouverture d'air fourni (4) dans ledit boîtier est prévue pour, lors du montage du dispositif sur un mur (W) de ladite pièce, s'étendre sensiblement dans une direction verticale.
  11. Dispositif d'apport d'air selon la revendication 1, dans lequel ledit boîtier (2) est prévu pour, lors du montage du dispositif de telle sorte qu'une de ses parois latérales se situe légèrement en dessous ou sensiblement de niveau avec la partie de plancher (F) de ladite pièce, créer une chambre allongée (7) adjacente à ladite ouverture d'air fourni (4), ladite chambre allongée (7) étant munie d'une grille supérieure (8) permettant le passage de l'air entrant dans la pièce.
  12. Dispositif d'apport d'air selon la revendication 11, dans lequel ladite grille (8) est prévue pour, lors du montage du dispositif de telle sorte qu'une de ses parois latérales se situe légèrement en dessous ou sensiblement de niveau avec la partie de plancher (F) de ladite pièce, être agencée dans un plan qui est de niveau avec ladite partie de plancher (F) de la pièce.
EP10753774.8A 2009-03-20 2010-03-17 Dispositif d'alimentation en air Active EP2409089B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0900359A SE534160C2 (sv) 2009-03-20 2009-03-20 Tilluftsdon
PCT/SE2010/050296 WO2010107378A1 (fr) 2009-03-20 2010-03-17 Dispositif d'alimentation en air

Publications (3)

Publication Number Publication Date
EP2409089A1 EP2409089A1 (fr) 2012-01-25
EP2409089A4 EP2409089A4 (fr) 2018-03-21
EP2409089B1 true EP2409089B1 (fr) 2019-07-10

Family

ID=42739858

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10753774.8A Active EP2409089B1 (fr) 2009-03-20 2010-03-17 Dispositif d'alimentation en air

Country Status (3)

Country Link
EP (1) EP2409089B1 (fr)
SE (1) SE534160C2 (fr)
WO (1) WO2010107378A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5891752B2 (ja) * 2011-11-30 2016-03-23 株式会社富士通ゼネラル 空気調和機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE565273A (fr) * 1957-03-01
US3237686A (en) * 1964-12-22 1966-03-01 Worthington Corp Induction circulators having rotating nozzles
SE523959C2 (sv) * 2002-03-11 2004-06-08 Fresh Ab Tilluftdon och system för att införa tilluft i ett rum
FI119126B (fi) * 2004-06-18 2008-07-31 Halton Oy Tuloilmalaite

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
WO2010107378A1 (fr) 2010-09-23
EP2409089A1 (fr) 2012-01-25
SE534160C2 (sv) 2011-05-17
SE0900359A1 (sv) 2010-09-21
EP2409089A4 (fr) 2018-03-21

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