EP2503256B1 - Dispositif diffuseur d'entrée d'air et système comprenant un plafond de bâtiment ayant un ou plusieurs dispositifs de diffuseur d'entrée d'air - Google Patents

Dispositif diffuseur d'entrée d'air et système comprenant un plafond de bâtiment ayant un ou plusieurs dispositifs de diffuseur d'entrée d'air Download PDF

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Publication number
EP2503256B1
EP2503256B1 EP12160315.3A EP12160315A EP2503256B1 EP 2503256 B1 EP2503256 B1 EP 2503256B1 EP 12160315 A EP12160315 A EP 12160315A EP 2503256 B1 EP2503256 B1 EP 2503256B1
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EP
European Patent Office
Prior art keywords
air
tubular part
free edge
air guiding
air inlet
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
EP12160315.3A
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German (de)
English (en)
Other versions
EP2503256A2 (fr
EP2503256A3 (fr
Inventor
Søren Duval Byrgesen Larsen
Kim Jørgen Heide Kronby
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.)
JS Ventilation AS
Original Assignee
JS Ventilation AS
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
Priority claimed from DKPA201100193A external-priority patent/DK177247B1/da
Application filed by JS Ventilation AS filed Critical JS Ventilation AS
Publication of EP2503256A2 publication Critical patent/EP2503256A2/fr
Publication of EP2503256A3 publication Critical patent/EP2503256A3/fr
Application granted granted Critical
Publication of EP2503256B1 publication Critical patent/EP2503256B1/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
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0227—Ducting arrangements using parts of the building, e.g. air ducts inside the floor, walls or ceiling of a building
    • 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
    • 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
    • F24F13/062—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having one or more bowls or cones diverging in the flow direction

Definitions

  • An air inlet diffuser device and a system including a building ceiling having one or more air inlet diffuser devices.
  • the present invention relates an air inlet distributor or diffuser device, and a system including a building ceiling having one or more of the air inlet diffuser devices, the building ceiling being a suspended ceiling which defines a plenum.
  • Ventilation of office buildings etc. is normally performed to ensure a desired indoor climate in summer- and wintertime.
  • Patent document US 2 190 937 discloses an air inlet diffuser device according to the preamble of claim 1. Also patent document WO 84/01 615 describes a similar air inlet diffuser device. Other examples of an air inlet diffuser device and a suspended building ceiling with such an air inlet diffuser device are disclosed in WO98/51 978 and US 3 403 614 .
  • the aforementioned problems are solved by the present invention which provides an air inlet diffuser device according to claim 1 and a system therewith according to claim 4, at the same time providing a low resistance to the air flow with a consequential reduction in noise and energy consumption.
  • the value of the air inlet diffuser device resulting from the design of the device may be in the order of 3.72, yielding a long throw length as determined by formulae l 0,2 ⁇ k r ⁇ V o ⁇ ⁇ A o ⁇ k r ⁇ ⁇ (v o ⁇ q v ) , where v o is the effective inflow velocity, A o is the effective inflow area, and q v is the volume flow.
  • Traditional air inlet diffuser devices have a k r value of less than half that.
  • the design of the device ensures that air driven through the device will flow very closely against the lower side of the ceiling to a relatively large distance from the diffuser device, before losing energy leading to a downward flow of the air.
  • Fig. 1 shows schematically a ceiling system having no installations such as ventilating air ducts or cooling or heating pipes, the ceiling system having integrated air inlet diffuser devices 1.
  • the ceiling system is normally formed as a suspended ceiling C comprised by a plurality of individual four-sided plates P, such as metal, eg. aluminium, plates, each having an upper side US and a lower side LS.
  • the size of the plates P is selected according to the builder's specifications to obtain a desired visual appearance of the ceiling C; the plates P may, by way of example, be square with dimensions in the order of 1m x 1m.
  • the suspended ceiling may be mounted in a conventional manner below a fixed ceiling forming part of a building structure, to define a plenum or space S, and a fan drives air at a given temperature into this space S.
  • the plates P are delivered in standard sizes, and the suspended ceiling is constructed as a sealed structure such that air A will primarily flow from the space S through air inlet diffuser devices 1 to be discussed in further details below.
  • the plates P of the ceiling have an integral tubular part 5 of a respective air inlet diffuser device 1, the part 5 preferably being pressed out from the metal plates by a local deformation of a peripheral edge or rim of a through-going aperture previously made in the plate.
  • the tubular part 5 extends into the space S.
  • the air inlet diffuser device 1 is formed as a component that includes the aforementioned part 5 which is inserted into the through-going aperture.
  • the number and size of air inlet diffuser devices 1 is selected in accordance with the heat load, i.e. the amount of heat energy supplied as sunlight, by machinery, computers, people or lighting equipment to the building room or inside space (R) below the suspended ceiling.
  • an amount of cooling air to be supplied to the building room can be calculated using a PC-program.
  • the arrangement, dimensions and number of the air inlet diffuser devices 1 may be calculated using this PC-program.
  • the ceiling system may be used in any type of building where ventilation is required or desired.
  • the design or configuration of the air inlet diffuser device 1 is such that is may carry through large variations in the through-flow of air while still ensuring that the air exiting the device will "stick" to the lower side LS of the ceiling C; it will be understood that it is important to ensure that the air A flows as far as possible along and close to the lower side LS of the plates after exiting the device 1.
  • the present invention it is made possible to obtain the aforementioned desirable flow without the need for any regulating devices, i.e. without the need for any movable parts for setting and varying the size of the flow passage of the air inlet diffuser device 1, in that the device provides for a minimum flow resistance and, hence, a minimum noise and energy requirement while at the same time complying with current building codes.
  • the device factor k r may be in the order of 3.72, while traditional air inlet diffuser devices have a device factor k r of less than half.
  • the air inlet diffuser device 1 will in the following be discussed in further details, with reference to an embodiment where a part 5 thereof is a raised portion of the plates P, being pressed out from the plates P by a local deformation, such as by using a punching tool, of a peripheral edge or rim of a through-going aperture previously made in the plate.
  • the air inlet diffuser device 1 comprises as shown in fig. 2-4 a) an outer cylindrical tubular part 5 having an inside surface 5' and an upper free edge 8 to be located above the upper side US of the plates P and b) an inner elongated air guiding part 20 which is symmetrical about an axis of rotation 25, i.e. which may eg. have conical shape with the axis 25 parallel with the longitudinal axis of the tubular part 5.
  • the tubular part 5 has at the lowermost extremity thereof a first circumferential flange 12 with a lower surface 12'.
  • An even or uniform transition between the inner surface 5' of the tubular part 5 and the lower surface 12' is defined by a curved transition face 7.
  • the air guiding part 20 is mounted centrally within the cylindrical tubular part 5 such that the distance d2 to the tubular part 5 measured perpendicular to the axis of rotation 25 decreases uniformly in the direction from the upper free edge 8. This forms a converging flow passage 3 between the tubular part 5 and the air guiding part 20.
  • the air guiding part 20 extends farthest from the upper free edge 8 into a second circumferential flange 22 which together with the lower surface 12' forms a circumferential and horizontal air exit passage 2 for orienting air perpendicularly to the axis of rotation 25, i.e. parallel with or essentially parallel with the lower surface LS of the plate P.
  • the air guiding part 20 is fixed to the tubular part 5 so as to be immovable during use of the device 1 in the building.
  • the apex T of the air guiding part 20 is located at a distance d4 below the edge 8 corresponding to 25%-75%, or 40% - 60%, of a distance d3 between the first circumferential flange 12 and the upper free edge 8.
  • the circumferential passage 2 has no air flow restrictions and the tubular part 5 preferably has a circular cross-section of constant diameter.
  • the air guiding part 20 is located in its entirety below the free edge 8, giving rise to a very compact construction, while at the same time the tubular part 5 projects by a distance d3 into the space S above the upper side US of the plates P, to provide for a "bathtub-effect" where cold air at the upper side US of the plates P is heated, thereby rising upwards, after which this heated air passes through the air inlet diffuser device 1, as shown by the arrows in fig. 1 .
  • Figs. 2-4 show different designs of a transition area 20" between the air guiding part 20 and the circumferential flange 22, and of the air guiding part 20 as such.
  • the system preferably drives - essentially without any installations in the space or plenum S - the desired heating or cooling air to the room R.
  • the sub-cooled air having a temperature of eg. 13°C is - due to the temperature gradient - distributed across the upper side US of the plates P, and thereby brings about a cooling of the lower side LS of the plates P to a temperature of eg. 17°C, generating cooling radiation towards the room R.
  • the air inlet diffuser devices 1 of the invention establish a through flow of the sub-cooled air, the air flowing horizontally along the lower side LS of the plates, contributing to a further cooling of the room R.
  • the total cooling effect may eg. reach 100 W/m 2 floor area, which cannot be obtained with the devices currently on the market. A high level of comfort in the room R is maintained.
  • the ceiling system may be used in all types of buildings with a need for ventilation.
  • the shown solution where the part 5 is integral with the plates 5 is highly compact, allowing for the air to exit and flow very closely to the lower side LS of the plates 5; an alternative embodiment may be envisaged where the device 1 is designed with the aforementioned circumferential flange 12 configured to be secured to the plates P, the plates P in this embodiment being provided only with the aforementioned aperture with or without the raised portion discussed above.
  • the apertures formed in the plates 5 may have a diameter configured such that the diameter of the tubular part 5 is 160 mm when the raised portions are formed.
  • the plates 5 may be 0.5 mm aluminium plates, and distance d3 and d4 may be 200 mm and 80 mm, respectively.
  • a desired increased length d4 of the tubular part 5 may be obtained by placing a extension collar on top of the raised portion, the collar then defining the upper free edge of the tubular part 5.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Duct Arrangements (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Claims (7)

  1. Dispositif de diffuseur d'admission d'air (1) comprenant a) une partie tubulaire cylindrique extérieure (5) ayant une surface intérieure (5') et un bord libre supérieur (8) et b) une partie de guidage d'air allongée intérieure (20) qui est symétrique sur un axe de rotation (25), dans lequel la partie tubulaire (5) a à l'extrémité la plus basse de celle-ci une première bride circonférentielle (12) avec une surface inférieure (12'), une transition plane ou uniforme entre la surface intérieure (5') de la partie tubulaire (5) et ladite surface inférieure (12') étant définie par une face de transition incurvée (7), ladite partie de guidage d'air (20) étant montée de manière centrale à l'intérieur de ladite partie tubulaire (5) cylindrique de telle sorte que la distance (d2) à ladite partie tubulaire (5) mesurée perpendiculaire audit axe de rotation (25) décroît uniformément dans la direction dudit bord libre supérieur (8) pour former un passage d'écoulement convergeant (3) entre ladite partie tubulaire (5) et ladite partie de guidage d'air (20), et en ce que ladite partie de guidage d'air (20) la plus loin dudit bord libre supérieur (8) s'étend jusque dans une seconde bride circonférentielle (22) qui conjointement avec ladite surface inférieure (12') forme un passage de sortie d'air (2) circonférentiel et de préférence horizontal pour orienter l'air perpendiculairement audit axe de rotation (25), caractérisé en ce que ladite partie de guidage d'air (20) est en utilisation fixée de manière immobile à ladite partie tubulaire (5), l'apex (T) de ladite partie de guidage d'air (20) étant situé à une distance (d4) en-dessous dudit bord libre (8) correspondant à 25 %-75 % d'une distance (d3) entre ladite première bride circonférentielle (12) et ledit bord libre supérieur (8).
  2. Dispositif de diffuseur d'admission d'air selon la revendication 1, ladite partie tubulaire (5) ayant une section transversale circulaire ou carrée.
  3. Dispositif de diffuseur d'admission d'air selon l'une quelconque de revendications précédentes, caractérisé en ce que la partie de guidage d'air (20) est située dans son intégralité en-dessous dudit bord libre supérieur (8).
  4. Système pour faire avancer de l'air de chauffage ou de refroidissement vers un espace intérieur de bâtiment (R), comprenant un plafond suspendu (C) défini par une pluralité de plaques de plafond (P) ayant un côté supérieur (US) et un côté inférieur (LS), dans lequel de l'air (A) est entraîné vers un plénum (S) au-dessus du plafond suspendu (C) et depuis ce plénum (S), est dirigé sur ledit côté inférieur (LS) desdites plaques de plafond (P) par des dispositifs de diffuseur d'admission d'air (1), caractérisé en ce que le système comprend a) une partie tubulaire cylindrique extérieure (5) ayant une surface intérieure (5') et un bord libre supérieur (8) situés dans ledit plénum (S) et b) une partie de guidage d'air allongée intérieure (20) qui est symétrique sur un axe de rotation (25), dans lequel la partie tubulaire (5) a à l'extrémité la plus basse de celle-ci une première bride circonférentielle (12) avec une surface inférieure (12') faisant face audit espace (R) , une transition plane ou uniforme entre la surface intérieure (5') de la partie tubulaire (5) et ladite surface inférieure (12') étant définie par une face de transition incurvée (7), ladite partie de guidage d'air (20) est en utilisation montée fixement de manière immobile et de manière centrale à l'intérieur de ladite partie tubulaire (5) cylindrique de telle sorte que la distance (d2) à ladite partie tubulaire (5) mesurée perpendiculaire audit axe de rotation (25) décroît uniformément dans la direction dudit bord libre supérieur (8) pour former un passage d'écoulement convergeant (3) entre ladite partie tubulaire (5) et ladite partie de guidage d'air (20), l'apex (T) de ladite partie de guidage d'air (20) étant situé à une distance (d4) en-dessous dudit bord libre (8) correspondant à 25 %-75 % d'une distance (d3) entre ladite première bride circonférentielle (12) et ledit bord libre supérieur (8), et en ce que ladite partie de guidage d'air (20) la plus loin dudit bord libre supérieur (8) s'étend jusque dans une seconde bride circonférentielle (22) qui conjointement avec ladite surface inférieure (12') forme un passage de sortie d'air (2) circonférentiel et horizontal pour orienter l'air perpendiculairement audit axe de rotation (25).
  5. Système selon la revendication 4, lesdites plaques de plafond (P) étant des plaques de plafond métalliques (P), ladite partie tubulaire (5) étant pressée hors des plaques de plafond (P), ce par quoi ladite surface inférieure (12') fait partie intégrante dudit côté inférieur (LS) desdites plaques de plafond (P).
  6. Système selon l'une quelconque des revendications 4 ou 5, ladite partie tubulaire (5) ayant une section transversale circulaire ou carrée.
  7. Système selon l'une quelconque de revendications 4-6, caractérisé en ce que ladite partie de guidage d'air (20) est située dans son intégralité en-dessous dudit bord libre supérieur (8).
EP12160315.3A 2011-03-21 2012-03-20 Dispositif diffuseur d'entrée d'air et système comprenant un plafond de bâtiment ayant un ou plusieurs dispositifs de diffuseur d'entrée d'air Active EP2503256B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201100193A DK177247B1 (da) 2011-03-21 2011-03-21 Installationsløst teknikloft med integreret indblæsningsarmatur til luftkonditionering af indeklima i bygninger
DK201100841A DK177703B1 (da) 2011-03-21 2011-10-31 Et luftindblæsningsarmatur, samt et loftsystem med luftindblæsningsarmaturet

Publications (3)

Publication Number Publication Date
EP2503256A2 EP2503256A2 (fr) 2012-09-26
EP2503256A3 EP2503256A3 (fr) 2014-08-20
EP2503256B1 true EP2503256B1 (fr) 2020-08-12

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EP12160315.3A Active EP2503256B1 (fr) 2011-03-21 2012-03-20 Dispositif diffuseur d'entrée d'air et système comprenant un plafond de bâtiment ayant un ou plusieurs dispositifs de diffuseur d'entrée d'air
EP12160313.8A Active EP2503255B1 (fr) 2011-03-21 2012-03-20 Système comprenant un plafond de bâtiment ayant un ou plusieurs dispositifs de diffuseur d'entrée d'air intégré et plaque métallique pour plafond suspendu

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Application Number Title Priority Date Filing Date
EP12160313.8A Active EP2503255B1 (fr) 2011-03-21 2012-03-20 Système comprenant un plafond de bâtiment ayant un ou plusieurs dispositifs de diffuseur d'entrée d'air intégré et plaque métallique pour plafond suspendu

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EP (2) EP2503256B1 (fr)
DK (1) DK177703B1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE541076C2 (sv) 2014-02-11 2019-03-26 Lindab Ab Ventilationsdon med ljuddämpning.
CN107588520A (zh) * 2017-09-28 2018-01-16 衡阳泰豪通信车辆有限公司 一种兼具分流和消音功能的风道分流器
KR20220081614A (ko) * 2020-12-09 2022-06-16 엘지전자 주식회사 공기조화기

Citations (1)

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Publication number Priority date Publication date Assignee Title
WO1996039808A1 (fr) * 1995-06-07 1996-12-19 Osborne Industries, Inc. Procede et moyen permettant une ventilation au plafond amelioree

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US3303771A (en) * 1965-02-11 1967-02-14 Robert J Sigel Inc Ventilated ceiling construction
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US7000634B2 (en) * 2000-10-26 2006-02-21 Lindinvent Ab Adjustable valve for variable flows and a method for reducing flow through a valve
EP1334317B1 (fr) * 2000-10-26 2006-06-07 Lindinvent AB Clapet reglable destine a des ecoulements variables et procede de reduction d'un ecoulement par l'intermediaire d'un clapet
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Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
WO1996039808A1 (fr) * 1995-06-07 1996-12-19 Osborne Industries, Inc. Procede et moyen permettant une ventilation au plafond amelioree

Also Published As

Publication number Publication date
DK177703B1 (da) 2014-03-24
EP2503255A2 (fr) 2012-09-26
EP2503255B1 (fr) 2021-05-12
DK201100841A (da) 2012-09-22
EP2503256A2 (fr) 2012-09-26
EP2503256A3 (fr) 2014-08-20
EP2503255A3 (fr) 2014-07-30

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