EP0389508B1 - Air distribution device - Google Patents

Air distribution device Download PDF

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Publication number
EP0389508B1
EP0389508B1 EP88909397A EP88909397A EP0389508B1 EP 0389508 B1 EP0389508 B1 EP 0389508B1 EP 88909397 A EP88909397 A EP 88909397A EP 88909397 A EP88909397 A EP 88909397A EP 0389508 B1 EP0389508 B1 EP 0389508B1
Authority
EP
European Patent Office
Prior art keywords
air
plate
guide rails
distribution
zones
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.)
Expired - Lifetime
Application number
EP88909397A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0389508A1 (en
Inventor
Stig BJÄRKVIK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABB Technology FLB AB
Original Assignee
ABB Flaekt AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ABB Flaekt AB filed Critical ABB Flaekt AB
Priority to AT88909397T priority Critical patent/ATE87082T1/de
Publication of EP0389508A1 publication Critical patent/EP0389508A1/en
Application granted granted Critical
Publication of EP0389508B1 publication Critical patent/EP0389508B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • F24F13/068—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/01—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station in which secondary air is induced by injector action of the primary air

Definitions

  • the present invention relates to an air distribution device of the kind set forth in the preamble of Claim 1.
  • the inventive air distributing device is a low impulse device and can either be built into or attached to a wall or like structure or may stand freely on a floor or like support surface.
  • the device is located close to the floor and consequently the speed of the incoming air must be low, in order not to create draughts or other disturbing phenomena.
  • FR A 2 169 131 discloses a device without induction of secondary or room air, but with not less than three different perforated walls, through the small perforations of which the air has to be fed out under high pressure and thus entailing the draw-backs as mentioned before.
  • US A 1 523 268 discloses an air distribution system for ceilings, which system also lacks induction of secondary or room air, and in which there is no confinement of the various outlets to a single and coherent device. Neither is this system designed to be used in the lower area of a room as is the present invention.
  • the object of this invention to provide an improved air distribution device in which the aforesaid drawbacks are substantially avoided, which is of simple construction, which will control the incoming air satisfactorily in both the vertical and horizontal directions, which incurs low manufacturing costs and repair and maintenance costs, and which represents a general step forward in this art.
  • the invention aims also at saving energy and costs by making it possible to use less primary or ventilation air in the first hand and lower temperature of same in the second hand compared with previously knowndevices It is also an object of the invention to provide a better spread of the ventilation air, and to avoid the necessity of regular inspection, cleaning and/or exchange of parts of the device.
  • the device according to the invention requires a relatively low speed of the through flowing-air and ensures uniform ventilation of a major range surrounding the device. Secondary air is continuously sucked into the device, mixed therein with the primary air and fed out in a mixed and conditioned state.
  • the secondary air has higher temperature than the primary air, which accordingly brings about a mixture of temperatures and allows thus lower temperatures of the primary air without a lower temperature of the distributed air mixture compared with a device without induction and other essential features according to this invention.
  • costs for the air distribution and the apparatus creating same may be kept down, as smaller dimensions and lower temperatures may be applied. Even costs of operation may be reduced, as minor fans or minor efficiency of same will be required.
  • the device operates entirely without hydraulic, pneumatic or electric means, which often are sensitive to break-downs and have a limited life time.
  • FIGS 1-4 illustrate a first embodiment of an inventive air distribution device 10 which is intended for mounting at or in a wall or like structure, e.g. a stud wall 1, indicated in chain lines in Figure 2, at a short distance above a floor surface 2.
  • the device 10 is flat and includes an inlet sleeve 12 which extends to a distribution chamber 14 bounded by a rear wall 16, side walls 18, a bottom wall 20, and an upper wall 22 which is contiguous with the inlet sleeve.
  • the distribution chamber 14 is covered on the side thereof facing the room to be ventilated with a perforated front cover plate 24 which has located centrally and inwardly thereof a distribution or screening plate 25 contributing to desired lateral diversion of a part of the outgoing air flow.
  • the rails 26 are carried by the side walls 18 or preferably, as shown, by vertical baffle and support plates 30 which are preferably inclined to the vertical so as to diverge in the direction of the outgoing air flow, and which are located on respective sides of the distribution plate 25 and have an outwardly angled part 31 at a location nearest the front plate 24.
  • the baffle and support plates 30 and preferably also the guide rails 26 are provided with slots by means of which the plates and rails can be brought into mutual locking relationship.
  • the plates 30 and/or the rails 26 may be arranged tiltable to allow modified setting.
  • an air distributing and throttling plate 32 Arranged between the inlet sleeve 12 and the distribution chamber, or box, 14 is an air distributing and throttling plate 32, which is perforated with holes 34.
  • the holes are disposed in a rear row 35 and mutually parallell rows 36 said rows enclosing intermediate imperforate induction zones 38 which open toward the front side of the device.
  • induction air is drawn by suction into the induction zones on the downstream side of the distribution plate 32, from a secondary air aperture or port 42 directed towards the front side of the device.
  • the secondary air aperture is bounded laterally by the side walls 18, upwards by the upper wall 22 and/or and upper boundary plate 44, and downwards by a lower boundary plate 46.
  • This secondary air port may be screened-off, e.g. by a displaceable co-planar or co-curved perforated plate, mesh or the like (not shown), when a reduced amount of secondary air or return air is to be taken from the ventilated room.
  • This latter plate and plate 25 may also be combined to allow simultaneous setting of both areas in any desired way.
  • the front plate 24 is located at a distance from the wall 1 such as to leave an intermediate gap or slot 48.
  • the plate 24 has at each end thereof a rearwardly bent side edge portion 50 which carries an inwardly turned flange or lip 52.
  • Both the bent side-edge portions 50 and their respective corners joining the front plate and also the lips 52 have perforations 54 similar to the front plate. This avoids the occurrence of non-uniformly directed and sharply defined air exit zones on both the front side of the device and externally of the gap or slot 48.
  • the holes 54 in the side-edge portions 50 and their respective corners assist in equilizing the gas or air flow in this region and also prevent the occurance of stagnation zones.
  • the centrally located air distribution plate 25 is effective in throttling the air flow in the central region of the front plate.
  • This air throttling effect together with the guiding effect afforded by the baffle and support plates 30, with their outwardly angled parts 31, assist in delivering air to regions which lie immediately in front of and laterally of the inventive air distribution device.
  • Air entering the device (arrow 56) from a conduit (not shown) is slowed down in the inlet sleeve 12 by the air distributing and throttling plate 32 and flows uniformly distributed down through the rear rows of holes 35, along the rear wall 16 of the distribution chamber and through the mutually parallel rows of holes 36.
  • a subpressure is generated on the underside of the plate 32 in the imperforate zones 38 and induction air is drawn into these zones in the aforedescribed manner.
  • part air-flows are successively directed forwardly by the rails 26.
  • the upwardly bent parts 28 of the rails 26 will therewith act as "splitters” and split off that part of the incoming air flow located nearest the front side of the device.
  • the rear wall 16 is inclined and hence the chamber 14 narrows downwardly, so that the air will flow at essentially the same speed throughout the whole length of the chamber and air flows of equal size will be deflected or guided outwards through the front cover plate by the guide rails.
  • a wall-mounted air distribution device constructed in accordance with the invention is typically adapted for fitting to studwork in which the vertical studs are spaced 70 mm apart.
  • the inlet sleeve is given conveniently a size of 60 x ca 500 so as to utilize all the space available between the studs.
  • the device itself has a typical width of 600 mm and a height of 300-900 mm depending on the air requirement concerned.
  • the diameter of the holes in the distribution plate 32 ranges from 8 to 16 mm, depending on the air requirement concerned.
  • the front cover plate may suitably have a hole diameter of 5 mm with a centre distance of 7.5 mm.
  • the device 10 is suitably placed at a distance of 10 cm from the floor.
  • Figures 5-8 illustrate another embodiment of the inventive device, referenced 110, which is intended to be placed freely on a floor or like support surface.
  • Components which are similar or identical to corresponding components of the Figures 1-4 embodiment have been identified with the same reference signs, although with the addition of a prefix 1 (one).
  • the exemplifying device 110 illustrated in Figures 5-8 includes an inlet sleeve 112 which extends to a distribution chamber 114 which is bounded at the bottom by a bottom plate 120 and at the top by a top cover 122.
  • the device is supported on a floor base 123 and comprises an encircling cylindrical, vertical front cover which is perforated with holes 154 for the passage of ventilation air.
  • Located within the front cover is a number of annular, horizontally oriented guide rails 126, the radially inner edge of each of which is bent upwardly around the centre hole 129 of the annulus, to form an upstanding collar 128.
  • the annular rails 126 are carried by a plurality of vertical baffle and support plates 130 which are at least three in number, preferably four or more.
  • the central hole of the annular guide rails 129 decreases in size with increasing depth and distance from the inlet sleeve 112, thereby to form a downwardly narrowing distribution chamber.
  • the guide rails 126 and/or the vertical support plates 130 also in this case include slots by means of which the rails can be attached securely and reliably kept in position.
  • the plates 130 function to support the annular guide rails 126 and also to guide the exiting ventilation air in the horizontal plane. Accordingly, when the need for such guidance is great, a large number of baffle and support plates 130 are provided. This may be the case, for instance, when the air distribution device 10 is intended to deliver ventilation only around a part of its circumference, while the remainder of the circumference is screened off by a screening plate (not shown) located in the immediate vicinity of the perforated front cover plate 124. In this case, the plates 130 are preferably located along the edges of such a screening plate.
  • the horizontal part of respective rails 126, and preferably also the collars 128 thereon, may be perforated with holes having a diameter of, e.g., 2 mm. These holes allow a certain amount of air to pass through the guide rail surfaces and guide rail collars. This prevents the occurence of subpressure zones on the underside of the guide rails and/or on the outside of the collars, in which zones back currents and turbulence may occur and therewith result in acoustic and flow disturbances in the flow exiting from the air distribution device.
  • the inlet sleeve 112 connects with an inlet box or chamber 131, the bottom of which is delimited by a distributing and throttling plate 132.
  • the plate 132 has provided therein a plurality of through-passing holes 134 which are disposed in radially extending rows with intermediate inductions zones 138 which open outwardly towards the periphery of the device.
  • a free-standing air distribution device constructed in accordance with the invention need not necessarily be cylindrical, but may have any desired configuration.
  • the device may be triangular, square, rectangular or any other polygonal and/or irregular shape.
  • an inclined rear wall 216 which prefereably is terminated by an upper inclined surface at approximately the same level as the lower boundary plate 246.
  • the guide rail 226 have preferably straight front-edges, although the front cover plate 224 preferably is arcuated.
  • the center part of the guide rails forms another straight edge abutting the distribution plates 225 and carrying same or vice versa.
  • baffle or support plates there are preferably only latteral limitations consistuted by the side walls of this device. It will be appreciated, that in this case any substantial latteral diversion of the outgoing mixed air flow is usually not necessary, as the side walls of this device are already flush with the adjacent walls of a room.
  • the embodiment shown in Figures 12-14 co-incides basically with the embodiment according to Figures 5-8.
  • the vertical baffle and support plates 330 are, however, preferably arranged to support the entire central structure.
  • two support plates 330 are preferably joined together with a guide rail 326 as shown in Figure 14, where the plates 30 are provided with centrally matching slots, meanwhile each guide rail forms around a central rectangular opening upwardly curved edges 328 leaving free recesses between one another to retain the support plates.
  • the size of the central opening of the support rails decreases from top to bottom.
  • the fifth embodiment as shown in Figures 15-17 discloses a device of elongated semi-circular shape in cross-section.
  • the interior of this device constitutes roughly a mirror-symmetrical combination of two devices according to Figures 9-11.
  • the central part of the front-edges and the latteral edges of the guide rails are preferably bent upwards or downwards to form flanges for attachment to the adjacent walls, respectively the distribution plates of the device.
  • these plates may preferably be combined with the guide rails, so that these parts may form a unit, preferably in combination with possible baffles or the like, which unit quickly and easily can be removed and installed.
  • the straight front-edges of the guide rails in combination with a curved front plate facilitate equalization of pressure of the outflowing air mixture, which thus is distributed into a room as uniformly as possible.
  • this may, of course, be replaced by guide plates of downwardly increasing size as is the case with the fully circular embodiments.
  • the guide rails also may be designed in one piece with the supporting structure, i.e. the lateral limitations, which may be support plates or baffles, namely by punching said guide rails out of a metal sheet.
  • the supporting structure may be left to extend co-planar or co-curved with the front cover or may be bent to extend at any desired angle in relation to same.
  • such a unit may also be made of plastic material, prefetably by means of injection moulding.
  • Fig.s 5 and 12 have a constant overall diameter but central openings with a diameter or dimensions which decrease from top to bottom, even if this may be difficult to see.
  • Fig.s 6 and 13, respectively do show clearly what is meant. Only with the provision of some central structure functioning like a rear wall 16 etc, the central openings may be of equal size throughout the device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
  • Nozzles (AREA)
  • Catching Or Destruction (AREA)
  • Compressor (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Ventilation (AREA)
  • Telephone Function (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP88909397A 1987-10-22 1988-10-24 Air distribution device Expired - Lifetime EP0389508B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88909397T ATE87082T1 (de) 1987-10-22 1988-10-24 Luft-verteilungsanordnung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8704133 1987-10-22
SE8704133A SE8704133L (sv) 1987-10-22 1987-10-22 Luftdistributionsdon

Publications (2)

Publication Number Publication Date
EP0389508A1 EP0389508A1 (en) 1990-10-03
EP0389508B1 true EP0389508B1 (en) 1993-03-17

Family

ID=20369986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88909397A Expired - Lifetime EP0389508B1 (en) 1987-10-22 1988-10-24 Air distribution device

Country Status (10)

Country Link
EP (1) EP0389508B1 (fi)
JP (1) JP2647478B2 (fi)
AT (1) ATE87082T1 (fi)
AU (1) AU2602788A (fi)
DE (1) DE3879507T2 (fi)
DK (1) DK95090A (fi)
FI (1) FI94670C (fi)
NO (1) NO168137C (fi)
SE (1) SE8704133L (fi)
WO (1) WO1989003961A1 (fi)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009156058A1 (de) * 2008-06-27 2009-12-30 Pluggit International B.V. Luftauslass
FR3138837A1 (fr) * 2022-08-11 2024-02-16 Synapse Concept Ensemble de diffusion d’air

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508846C2 (sv) * 1996-03-11 1998-11-09 Leif Lind Tilluftsdon med hålförsedd vägg vid vilken är anordnad dysor och slitshål
SE9801860L (sv) * 1998-05-27 1999-11-28 Stifab Farex Ab Tilluftsdon av låghastighetstyp samt sätt vid mätning av luftföden i sådana don
FI20001670A (fi) * 2000-07-14 2002-01-15 Halton Oy Tuloilmalaite ja menetelmõ ilmanvaihdossa
FI113798B (fi) * 2000-11-24 2004-06-15 Halton Oy Tuloilmalaite
SE0401477L (sv) * 2004-06-10 2005-12-11 Lindab Ab Tilluftsdon
DE102008052794B4 (de) * 2008-10-22 2014-11-20 Airbus Operations Gmbh Luftführungselement mit einem Störmungssteuerungselement
DE102008052792B4 (de) * 2008-10-22 2010-11-04 Airbus Deutschland Gmbh Luftführungselement und Luftführungselementanordnung für eine Flugzeugklimaanlage
US20140113536A1 (en) * 2012-10-23 2014-04-24 Visteon Global Technologies, Inc. Zonal airflow system for a vehicle
EP2896905B1 (en) * 2014-01-21 2018-08-15 Halton OY Air distribution device
AU2019201473B2 (en) * 2018-03-13 2020-10-29 Kimura Kohki Co., Ltd. Pneumatic radiation unit
JP2020041749A (ja) * 2018-09-11 2020-03-19 木村工機株式会社 空気式放射空調機
FR3121738A1 (fr) * 2021-04-09 2022-10-14 Romain FAUCHER Plénum de diffusion d’air unidirectionnel vertical pour cabine de tri sélectif

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US687154A (en) * 1900-12-07 1901-11-19 Adam Herig Heat-distributer.
US1523268A (en) * 1922-05-27 1925-01-13 Jay R Mccoll Ventilating system
DE662838C (de) * 1935-07-19 1938-07-22 Paul H Mueller Dr Ing Zuluftmuendung
GB765716A (en) * 1955-03-03 1957-01-09 Coleman Co Improvements in space heating apparatus
US3391629A (en) * 1966-07-18 1968-07-09 Us Register Company Reversible floor mounted register
CH491332A (de) * 1968-05-16 1970-05-31 Sulzer Ag Lochdecke
BE794498A (fr) * 1972-01-25 1973-07-25 Sulzer Ag Conduit de distribution d'air
SE7810734L (sv) * 1978-10-13 1980-04-14 Lind Leif Ingemar Flodesfordelningsdon samt tilluftskerm forsedd med sadant don
CH653117A5 (de) * 1981-11-06 1985-12-13 Sulzer Ag Verfahren und einrichtung zur individuellen kuehlung von raeumen eines gebaeudes.
NO844320L (no) * 1984-10-30 1986-05-02 Norsk Viftefabrikk As Fremgangsmaate ved ventilasjon av rom.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009156058A1 (de) * 2008-06-27 2009-12-30 Pluggit International B.V. Luftauslass
FR3138837A1 (fr) * 2022-08-11 2024-02-16 Synapse Concept Ensemble de diffusion d’air

Also Published As

Publication number Publication date
DK95090D0 (da) 1990-04-17
SE8704133D0 (sv) 1987-10-22
JPH03500678A (ja) 1991-02-14
NO901748D0 (no) 1990-04-20
FI94670B (fi) 1995-06-30
DE3879507D1 (de) 1993-04-22
NO901748L (no) 1990-04-20
FI901952A0 (fi) 1990-04-19
FI94670C (fi) 1995-10-10
DK95090A (da) 1990-04-17
EP0389508A1 (en) 1990-10-03
SE8704133L (sv) 1989-04-23
DE3879507T2 (de) 1993-09-30
WO1989003961A1 (en) 1989-05-05
NO168137C (no) 1992-01-15
JP2647478B2 (ja) 1997-08-27
ATE87082T1 (de) 1993-04-15
NO168137B (no) 1991-10-07
AU2602788A (en) 1989-05-23

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