EP1637815B1 - Belüftungsvorrichtung - Google Patents

Belüftungsvorrichtung Download PDF

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Publication number
EP1637815B1
EP1637815B1 EP05104844A EP05104844A EP1637815B1 EP 1637815 B1 EP1637815 B1 EP 1637815B1 EP 05104844 A EP05104844 A EP 05104844A EP 05104844 A EP05104844 A EP 05104844A EP 1637815 B1 EP1637815 B1 EP 1637815B1
Authority
EP
European Patent Office
Prior art keywords
air
supply device
air supply
airflow guide
diffuser element
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
EP05104844A
Other languages
English (en)
French (fr)
Other versions
EP1637815A1 (de
Inventor
Jörgen Seeberg
Fredrik Engdahl
Göran Hultmark
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.)
Lindab AB
Original Assignee
Lindab 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 Lindab AB filed Critical Lindab AB
Publication of EP1637815A1 publication Critical patent/EP1637815A1/de
Application granted granted Critical
Publication of EP1637815B1 publication Critical patent/EP1637815B1/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
    • 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
    • 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
    • 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
    • F24F1/00075—Indoor units, e.g. fan coil units receiving 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
    • F24F1/01—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
    • 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
    • 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
    • F24F2221/14—Details or features not otherwise provided for mounted on the ceiling

Definitions

  • the present invention relates to an air supply device comprising an inlet and an outlet and a chamber arranged therebetween.
  • EP 0 967 443 relating to a room cooling arrangement having an inner chamber, which is arranged within a larger chamber.
  • the object of the present invention therefore is to provide an air supply device that solves the above-described problems.
  • the inventive air supply device comprises an inlet and an outlet and, arranged therebetween, a chamber. It further comprises a diffuser element, an airflow guide and, arranged therebetween, a chamber, the diffuser element and the airflow guide being arranged in said first chamber, the device further comprising an air distributor arranged downstream of the airflow guide.
  • air first flows to the diffuser element which decreases the air velocity and ensures that the air is evenly distributed over the diffuser element.
  • the air flows through the diffuser element and into the intermediate chamber and is there distributed over the airflow guide which directs the airflow on to the air distributor.
  • the diffuser element is preferably a perforated plate.
  • the perforations should have an area corresponding to that of circular holes where the diameter is greater than or equal to 2 mm and smaller than or equal to 5 mm. If the holes of the perforations are too small, problems may arise by, for instance, filter fibres clogging the perforations and thus causing a lower airflow rate. If instead the perforations are too large, there is a risk that the equalising effect of the air velocity along the plate does not occur.
  • the airflow guide comprises nozzles, which preferably are distributed on a plate.
  • nozzles is meant anything from openings and holes to nozzles through which air can flow and which more or less can affect the direction of the air when passing and the flow direction out of the nozzles.
  • the advantage of nozzles thus is that the air direction can be affected, and by distributing the nozzles on a plate, a uniform velocity distribution along the entire plate is achieved.
  • small groups of nozzles can be arranged on the airflow guide, for instance, in the centre of the airflow guide.
  • the airflow guide and the diffuser element are preferably removably arranged. This is a great advantage when the duct is to be cleaned for instance. Also elements can be removed for cleaning in, for instance, a dishwasher. As a rule, a damper is arranged upstream of the air supply device, which must be removed for good access to the duct.
  • the present invention renders easy access to the duct possible by the airflow guide and the diffuser element being dismounted.
  • the airflow guide is arranged in operation to direct air flowing therein at right angles to the plane of the outlet, an air distributor being arranged at the outlet.
  • the air distributor is arranged at a distance from the airflow guide and arranged to deflect the airflow.
  • the air supply devices are often arranged in the suspended ceilings and then the air supply ducts extend in most cases horizontally along the ceiling. Air supply devices are normally arranged with the opening directed downwards. To make the airflow to the outlet as uniform as possible, the airflow guide should therefore in a preferred embodiment be arranged to direct the air to the outlet. To prevent the air from flowing straight out of the outlet and cause draught, i.e.
  • an air distributor should be arranged at the outlet to distribute the air over a larger surface.
  • the air distributor should therefore be arranged at a distance from the airflow guide.
  • the air distributor preferably deflects the air so as to prevent high air velocities and, thus, draught. Without the air being deflected, there is a risk that the air is concentrated into a concentrated flow with high velocity due to the induction effect.
  • the air supply device is designed as a module in a suspended ceiling, i.e. designed so that it may replace one of the plates in a suspended ceiling.
  • the air distributor is then arranged flush with the suspended ceiling so that the air is directed away from the air supply device along the suspended ceiling while at the same time, in terms of appearance, it does not project from the rest of the suspended ceiling.
  • the diffuser element is arranged at an angle to the airflow guide, which angle is smaller than 90°.
  • the airflow guide requires "quiet” surroundings, which means that it is better to have an inwardly angled diffuser element which owing to an angle deviating from 90° has a larger surface, said inwards angling besides implying that the diffuser element will extend further into the pressure chamber, i.e. into the chamber between the diffuser element and the airflow guide, thus resulting in better distribution of air in the pressure chamber.
  • a cooling-coil battery is arranged adjacent to the air supply device to be able to cool air flowing through the cooling-coil battery, and is most preferably arranged in such a manner that indoor air is drawn through the cooling-coil battery by induction.
  • the induction effect arises in consequence of the static pressure being lower as air flows out of the air supply device, which thus draws in indoor air due to this negative pressure.
  • a cooling-coil battery is arranged parallel to the plane of the outlet and the airflow guide comprises nozzles arranged in the centre of the airflow guide and nozzles arranged along the periphery of the airflow guide.
  • the nozzles in the centre ensure that the indoor air flowing through the cooling-coil battery is directed to the periphery of the airflow guide downstream of the airflow guide, and the nozzles along the periphery direct the air on to the air distributor.
  • a cooling-coil battery is arranged perpendicular to the plane of the outlet and at a distance from the centre of the air distributor, nozzles being arranged along the periphery of the airflow guide.
  • the indoor air after passing through the cooling-coil battery, flows towards the periphery of the airflow guide, which means that nozzles are only necessary along the periphery of the airflow guide to direct the air to the air distributor.
  • the air distributor spreads the air 360°.
  • the absolutely major part of all air supply devices that are manufactured today are provided with elements that spread the air effectively all around, such as rotating means with fins.
  • a damper is arranged between the inlet and the diffuser element.
  • a damper can in this position take a smaller flow variation.
  • the damper can be formed with perforations corresponding to those of the diffuser element.
  • the throttling is minimal, in which case throttling increases when the damper is moved towards the inlet of the air supply device.
  • the damper can be laterally displaced relative to the diffuser element and, thus, change the size of the openings.
  • Fig. 1 is an exploded view in perspective of an air supply device according to the present invention.
  • Fig. 2a is a cross-sectional view of an air supply device according to the present invention.
  • Fig. 2b shows an enlarged portion of the air supply device in Fig. 2a .
  • Fig. 3a is a side view of an air supply device according to the present invention.
  • Fig. 3b shows an enlarged portion of the air supply device in Fig. 3a .
  • Fig. 4 is a side view of an air supply device according to an alternative embodiment of the present invention.
  • Fig. 5 is a side view of an air supply device with a cooling-coil battery according to the present invention.
  • the air supply device in Fig. 1 comprises an inlet 2, a casing 3, a perforated plate 4 (diffuser element), an airflow guide 5 and an air distributor 6.
  • the air supply device shown in Fig. 1 is adapted to be mounted in a suspended ceiling 7.
  • Fig. 2a is a cross-sectional view of an air supply device 1.
  • the air flows into the air supply device as indicated by the arrow 8 and enters a first chamber, distribution chamber.
  • the air flows on through the perforated plate 4 and into a second chamber, pressure chamber, from which the air flows on through the airflow guide 5.
  • Fig. 2b shows an enlarged portion of the airflow guide 5 where the design of the nozzles 9 is more evident.
  • This design of the nozzles 9 has been found to give a smooth transition from static pressure to dynamic pressure without great losses, compared with, for instance, the perforated plate 4.
  • the purpose of the perforated plate 4 differs, however, from the purpose of the airflow guide 5.
  • the perforated plate 4 is above all intended to distribute the airflow uniformly in the intermediate chamber whereas the airflow guide 5 is rather intended to generate a pressure drop without noise and at the same time direct the airflow in the desired direction.
  • the air After passing through the airflow guide 5, the air enters a further chamber, impulse chamber, before it flows out in the room that is to be ventilated via an air distributor 6 which initially spreads the air along the suspended ceiling 7.
  • the distance between the airflow guide 5 and the air distributor 6 depends on the size of the nozzles 9. With a nozzle size where the diameter is 6 mm, the distance should be about 10 cm and preferably more than 8 cm. If instead the diameter is 8 mm, the distance should be at least 12 cm and most preferably 15 cm. Thus, the more holes, the smaller distance is necessary between the airflow guide 5 and the air distributor 6.
  • Fig. 3a is a side view of the air supply device in Fig. 2a , in which it is illustrated more distinctly how the air flows in the device.
  • Fig. 3b shows an enlarged portion of the air supply device in Fig. 3a and shows an embodiment of the suspension of the continuous sheet metal portion 10 which is arranged at an angle to the perforated plate 4.
  • the perforated plate and the continuous metal sheet portion 10 are made in one piece.
  • the airflow guide 5 is further also releasably mounted and replaceable by other airflow guides in order to adjust the device to various desiderata regarding pressure and/or flow rate.
  • the air supply device and/or the air supply duct can be fully cleaned.
  • dampers are frequently arranged, which normally require much work to allow removal in connection with, for instance, cleaning of the air ducts.
  • Fig. 4 shows an alternative embodiment where the diffuser element 11 is angled inwards over the airflow guide 5.
  • the distribution of air will be still more uniform since air does not have to flow very far from the diffuser element 11 through the pressure chamber to reach the far end of the airflow guide seen from the diffuser element 11.
  • the continuous sheet metal portion 15 is elongated so that it extends a distance up between the distribution chamber and the pressure chamber. This results in a quieter flow pattern adjacent to the nozzles in the airflow guide 5 which are arranged next to the sheet metal portion 15.
  • Fig. 5 illustrates an air supply device 1 according to the present invention which also comprises a cooling-coil battery 14.
  • the cooling-coil battery 14 is arranged horizontally, which means that indoor air will flow up through the cooling-coil battery 14 by induction and be directed to the sides of the device by the air which flows out through the airflow guide 5 through the nozzles 12 closest to the centre of the airflow guide 5.
  • the air is further directed down to the air distributor 16 by supply air flowing out of the nozzles 13 along the periphery of the airflow guide 5.
  • a vertically arranged cooling-coil battery is arranged at a distance from the centre of the air distributor and preferably extends between the air distributor 16 and the airflow guide 5, i.e. in the impulse chamber.
  • This solution thus allows indoor air to first flow up in the centre of the cooling-coil battery and after that flow horizontally out of the cooling-coil battery.
  • This solution requires only that supply air flows out of nozzles 13 along the periphery of the airflow guide 5 in order to direct the cooled indoor air down to the air distributor 16.
  • the air supply device can be designed to be arranged in ceilings without suspended ceilings or alternatively to be mounted on a wall.
  • the cooling-coil battery can advantageously be mounted with flexible tubes for increased dismountability of the air supply device and increased accessibility to the cooling-coil battery and other parts of the air supply device.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Percussion Or Vibration Massage (AREA)
  • Air-Flow Control Members (AREA)
  • Duct Arrangements (AREA)
  • Nozzles (AREA)
  • Telephone Function (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Paper (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Compressor (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Gas Separation By Absorption (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Massaging Devices (AREA)
  • Finger-Pressure Massage (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (15)

  1. Luftzuführvorrichtung (1) mit einem Gehäuse (3), einem Einlass (2), einem Auslass, einem Diffusorelement (4), einer Luftströmungsführung (5), wobei in der Vorrichtung (1) eine Kammer zwischen dem Einlass (2) und dem Auslass angeordnet ist, wobei das Diffusorelement (4) und die Luftströmungsführung (5) in der ersten Kammer angeordnet sind, wobei die Vorrichtung (1) ferner einen Luftverteiler (6) aufweist, der strömungsabwärts von der Luftströmungsführung (5) an dem Auslass angeordnet ist, wobei in der Vorrichtung (1) ferner eine Kühlschlangenbatterie (14) derart angeordnet ist, dass im Betrieb der Luftzuführvorrichtung (1) Innenluft durch Ansaugung durch die Kühlschlangenbatterie (14) gesaugt wird und mit Zuführluft gemischt wird, wobei die Luftströmungsführung (5) Düsen (13) aufweist, die entlang der Peripherie von mindestens zwei Seiten der Luftströmungsführung angeordnet sind,
    dadurch gekennzeichnet, dass in der Vorrichtung (1) eine zweite Kammer durch das Gehäuse (3), das Diffusorelement (4) und die Luftströmungsführung (5) gebildet ist, wobei die Luftströmungsführung (5) im Betrieb dazu ausgebildet ist, darin strömende Luft rechtwinklig zu der Ebene des Auslasses zu richten.
  2. Luftzuführvorrichtung (1) nach Anspruch 1,
    bei der das Diffusorelement (4) eine perforierte Platte ist.
  3. Luftzuführvorrichtung (1) nach Anspruch 2,
    bei der die Perforationen eine Fläche aufweisen, die der von kreisförmigen Öffnungen entspricht, wobei 2 mm ≤ d ≤ 5 mm ist.
  4. Luftzuführvorrichtung (1) nach Anspruch 1,
    bei der die Düsen (9) auf einer Platte (5) verteilt sind.
  5. Luftzuführvorrichtung (1) nach Anspruch 1,
    bei der die Luftströmungsführung (5) und das Diffusorelement (4) lösbar angeordnet sind.
  6. Luftzuführvorrichtung (1) nach Anspruch 1,
    bei der der Luftverteiler (6) in einem Abstand von der Luftströmungsführung (5) angeordnet ist.
  7. Luftzuführvorrichtung (1) nach Anspruch 1,
    bei der der Luftverteiler (6) im Betrieb zum Umlenken der Luftströmung angeordnet ist.
  8. Luftzuführvorrichtung (1) nach Anspruch 1,
    die als Modul in einer Hängedecke (7) ausgebildet ist.
  9. Luftzuführvorrichtung (1) nach Anspruch 8,
    bei der der Luftverteiler (6) bündig mit der Hängedecke (7) ausgebildet ist.
  10. Luftzuführvorrichtung (1) nach Anspruch 1,
    bei der zumindest ein Teil des Diffusorelements (11) in einem Winkel zu der Luftströmungsführung (5) angeordnet ist, der kleiner als 90 Grad ist.
  11. Luftzuführvorrichtung (1) nach Anspruch 1,
    bei der eine Kühlschlangenbatterie (14) parallel zu der Ebene des Auslasses angeordnet ist und bei der die Luftströmungsführung (5) im Zentrum der Luftströmungsführung (5) angeordnete Düsen (12) sowie entlang der Peripherie der Luftströmungsführung angeordnete Düsen (13) aufweist.
  12. Luftzuführvorrichtung (1) nach Anspruch 1,
    bei der eine Kühlschlangenbatterie (14) rechtwinklig zu der Ebene des Auslasses sowie in einer Distanz von dem Zentrum des Luftverteilers (6) angeordnet ist, wobei Düsen (13) entlang der Peripherie der Luftströmungsführung (5) angeordnet sind.
  13. Luftzuführvorrichtung (1) nach einem der vorausgehenden Ansprüche,
    bei der der Luftverteiler die Luft über 360 Grad verteilt.
  14. Luftzuführvorrichtung (1) nach einem der vorausgehenden Ansprüche,
    bei der ein Schieber zwischen dem Einlass und dem Diffusorelement (4, 11) angeordnet ist.
  15. Luftzuführvorrichtung (1) nach einem der vorausgehenden Ansprüche,
    bei der Eintrittsluft (8) in die Vorrichtung (1) in Richtung auf das Diffusorelement (4) in einer Richtung eintritt, die mit dem Diffusorelement (4) einen Winkel bildet, der gleich einem zweiten Winkel ist, der zwischen dem Diffusorelement (4) und der Luftströmungsführung (5) gebildet ist.
EP05104844A 2004-06-10 2005-06-03 Belüftungsvorrichtung Active EP1637815B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0401477A SE0401477L (sv) 2004-06-10 2004-06-10 Tilluftsdon

Publications (2)

Publication Number Publication Date
EP1637815A1 EP1637815A1 (de) 2006-03-22
EP1637815B1 true EP1637815B1 (de) 2011-04-27

Family

ID=32653570

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05104844A Active EP1637815B1 (de) 2004-06-10 2005-06-03 Belüftungsvorrichtung

Country Status (5)

Country Link
EP (1) EP1637815B1 (de)
AT (1) ATE507440T1 (de)
DE (1) DE602005027642D1 (de)
NO (1) NO330498B1 (de)
SE (1) SE0401477L (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI122284B (fi) * 2006-10-03 2011-11-15 Halton Oy Ilmavirtauksen päätelaite
EP2565548A1 (de) * 2011-09-05 2013-03-06 Strabag Ag Luftentspannungsdüse für Hochdruckbelüftung
FR3069622B1 (fr) * 2017-07-28 2019-08-16 Aero Textile Concept Diffuseur d'air comprenant un panneau textile
AU2018311607B2 (en) * 2017-07-31 2021-04-01 Gd Midea Air-Conditioning Equipment Co., Ltd. Indoor air-conditioning unit

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3241268C1 (de) * 1982-11-09 1984-01-19 Maurmann Ingenieurbüro GmbH, 5628 Heiligenhaus Deckenluftauslaß für Klimaanlagen
SE8704133L (sv) * 1987-10-22 1989-04-23 Flaekt Ab Luftdistributionsdon
DE3805873A1 (de) * 1988-02-25 1989-09-07 Zander Waermetechnik Kulmbach Luftauslasssystem in elementbauweise
DE4343718A1 (de) * 1993-12-21 1995-06-22 Wimboeck Besitz Gmbh Lüftungskasten
SE521038C2 (sv) * 1998-06-23 2003-09-23 Stifab Farex Ab Takmonterad anordning för kylning av rumsluft samt tillförsel av tilluft
FI113693B (fi) * 2000-12-07 2004-05-31 Halton Oy Tuloilmalaite

Also Published As

Publication number Publication date
DE602005027642D1 (de) 2011-06-09
ATE507440T1 (de) 2011-05-15
NO20052677L (no) 2005-12-12
EP1637815A1 (de) 2006-03-22
SE0401477L (sv) 2005-12-11
SE0401477D0 (sv) 2004-06-10
NO330498B1 (no) 2011-05-02
NO20052677D0 (no) 2005-06-03

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