EP2503256A2 - Lufteinlassverteilervorrichtung und System mit einer Gebäudedecke mit einer oder mehreren integrierten Lufteinlassverteilervorrichtungen - Google Patents

Lufteinlassverteilervorrichtung und System mit einer Gebäudedecke mit einer oder mehreren integrierten Lufteinlassverteilervorrichtungen Download PDF

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Publication number
EP2503256A2
EP2503256A2 EP12160315A EP12160315A EP2503256A2 EP 2503256 A2 EP2503256 A2 EP 2503256A2 EP 12160315 A EP12160315 A EP 12160315A EP 12160315 A EP12160315 A EP 12160315A EP 2503256 A2 EP2503256 A2 EP 2503256A2
Authority
EP
European Patent Office
Prior art keywords
air
tubular part
free edge
air inlet
air guiding
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
Application number
EP12160315A
Other languages
English (en)
French (fr)
Other versions
EP2503256B1 (de
EP2503256A3 (de
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/de
Publication of EP2503256A3 publication Critical patent/EP2503256A3/de
Application granted granted Critical
Publication of EP2503256B1 publication Critical patent/EP2503256B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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

  • 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.
  • the aforementioned problems are solved by the present invention, at the same time providing a low resistance to the air flow with a consequential reduction in noise and energy consumption.
  • the k r 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.

Landscapes

  • 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)
EP12160315.3A 2011-03-21 2012-03-20 Lufteinlassverteilervorrichtung und System mit einer Gebäudedecke mit einer oder mehreren integrierten Lufteinlassverteilervorrichtungen Active EP2503256B1 (de)

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 true EP2503256A2 (de) 2012-09-26
EP2503256A3 EP2503256A3 (de) 2014-08-20
EP2503256B1 EP2503256B1 (de) 2020-08-12

Family

ID=45930579

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12160315.3A Active EP2503256B1 (de) 2011-03-21 2012-03-20 Lufteinlassverteilervorrichtung und System mit einer Gebäudedecke mit einer oder mehreren integrierten Lufteinlassverteilervorrichtungen
EP12160313.8A Active EP2503255B1 (de) 2011-03-21 2012-03-20 System mit einer Gebäudedecke mit einer oder mehreren integrierten Lufteinlassverteilervorrichtungen und Metalldeckenplatten für eine Hängedecke

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP12160313.8A Active EP2503255B1 (de) 2011-03-21 2012-03-20 System mit einer Gebäudedecke mit einer oder mehreren integrierten Lufteinlassverteilervorrichtungen und Metalldeckenplatten für eine Hängedecke

Country Status (2)

Country Link
EP (2) EP2503256B1 (de)
DK (1) DK177703B1 (de)

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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403614A (en) 1967-04-28 1968-10-01 Bendix Corp Environmental enclosure with ceiling air plenum
WO1998051978A2 (en) 1997-05-16 1998-11-19 Work Smart Energy Enterprises, Inc. High-efficiency air-conditioning system with high-volume air distribution

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2190937A (en) * 1938-06-08 1940-02-20 Demuth Charles Air conditioning register
GB553283A (en) * 1942-01-23 1943-05-14 Eugene Chaudoir Air diffuser and regulator
US3303771A (en) * 1965-02-11 1967-02-14 Robert J Sigel Inc Ventilated ceiling construction
DE2105077A1 (de) * 1971-02-04 1972-08-10 Herbst D Vorrichtung zum gleichmäßigen Verteilen von Luft innerhalb von an Luftverteilkanäle einer Klimaanlage angeschlossenen Räumen
SE7810734L (sv) * 1978-10-13 1980-04-14 Lind Leif Ingemar Flodesfordelningsdon samt tilluftskerm forsedd med sadant don
DK457382A (da) * 1982-10-15 1984-04-16 Staehr Turbovent Ventilationsanlaeg med sprededyser, navnlig til staldbygninger
JPH029713U (de) * 1988-06-29 1990-01-22
EP0959670A1 (de) * 1995-06-07 1999-12-01 Osborne Industries, Inc. Verfahren und vorrichtung zur verbesserten deckenbelüftung
DE19730180C2 (de) * 1997-07-15 2000-11-30 Wilhelmi Werke Ag Verfahren zur Raumklimatisierung und Klimadecke für ein solches Verfahren
DK1334317T3 (da) * 2000-10-26 2006-08-14 Lindinvent Ab Justerbar ventil til variable strömme og en fremgangsmåde til reducering af en ström gennem en ventil
US7000634B2 (en) * 2000-10-26 2006-02-21 Lindinvent Ab Adjustable valve for variable flows and a method for reducing flow through a valve
US6945866B2 (en) * 2002-05-17 2005-09-20 Airfixture L.L.C. Method and apparatus for delivering conditioned air using pulse modulation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3403614A (en) 1967-04-28 1968-10-01 Bendix Corp Environmental enclosure with ceiling air plenum
WO1998051978A2 (en) 1997-05-16 1998-11-19 Work Smart Energy Enterprises, Inc. High-efficiency air-conditioning system with high-volume air distribution

Also Published As

Publication number Publication date
EP2503256B1 (de) 2020-08-12
DK177703B1 (da) 2014-03-24
EP2503255A2 (de) 2012-09-26
EP2503256A3 (de) 2014-08-20
EP2503255B1 (de) 2021-05-12
EP2503255A3 (de) 2014-07-30
DK201100841A (da) 2012-09-22

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