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EP1166017B1 - Vorrichtung und verfahren zum lüften eines raumes - Google Patents

Vorrichtung und verfahren zum lüften eines raumes Download PDF

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Publication number
EP1166017B1
EP1166017B1 EP00917477A EP00917477A EP1166017B1 EP 1166017 B1 EP1166017 B1 EP 1166017B1 EP 00917477 A EP00917477 A EP 00917477A EP 00917477 A EP00917477 A EP 00917477A EP 1166017 B1 EP1166017 B1 EP 1166017B1
Authority
EP
European Patent Office
Prior art keywords
air
outflow
ceiling
room
fixture
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
EP00917477A
Other languages
English (en)
French (fr)
Other versions
EP1166017A1 (de
Inventor
Antonius Franciscus De Vries
Robertus Henricus Adrianus De Vries
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.)
de Vries Antonius Franciscus
De Vries Robertus Henricus Adrianus
Original Assignee
de Vries Antonius Franciscus
De Vries Robertus Henricus Adrianus
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Filing date
Publication date
Application filed by de Vries Antonius Franciscus, De Vries Robertus Henricus Adrianus filed Critical de Vries Antonius Franciscus
Publication of EP1166017A1 publication Critical patent/EP1166017A1/de
Application granted granted Critical
Publication of EP1166017B1 publication Critical patent/EP1166017B1/de
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
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
    • 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 invention relates to an outflow fixture according to claim 1 and a method for ventilating a room according to claim 7.
  • US 5,569,078 describes such a method.
  • the method can be used in various situations, for example in offices, large rooms where many people meet, and in particular in factory farming for ventilating stables, wherein a relatively large number of living organisms per air volume unit are present, which organisms produce a large amount of heat, CO 2 and/or other waste/residual materials.
  • a general objective of room ventilation is to generate a comfortable air circulation in the room, without causing turbulence and draught. This can be achieved by letting the air flow along, and substantially parallel to the ceiling.
  • an outlet fixture according to the preamble of claim 1 is known from US 3987713.
  • One drawback of the known method is that the air, which initially flows downwards through the ceiling through a vertical inlet into an air diffuser, is blown out of relatively large openings in the diffuser in a horizontal direction along the ceiling without any guidance, whereby the direction of the airflow is suddenly changed. This causes a lot of turbulence and viscous losses within the air flow, and therefore a substantial part of the air will not maintain its direction parallel to the ceiling for a long time, especially at low air flow rates. Thus this known method does not provide the desired optimal air circulation.
  • the object of the invention is to provide an outflow fixture and a method for ventilating a room wherein the inflowing air and the air which is present inside the room are mixed more efficiently, and wherein little draught is produced.
  • the air is led along two surfaces which narrow in the direction of the outflow opening. Undesirable turbulence and viscous losses are reduced in this manner and the highest possible kinetic energy, and thus velocity, of the outflowing air along the ceiling is realised at a specific air flow, also when flow rates are low.
  • the shape of the narrowing surfaces is such that the air flow, which is initially directed downwards, is deflected in horizontal direction in the most efficient manner possible, which is achieved by giving both surfaces a flowing curve.
  • US 5,667,437 shows an air diffuser wherein the inflowing air is led along two narrowing surfaces.
  • this diffuser the air, which is often colder, is blown in a downward direction from the ceiling at a relatively high velocity along two narrowing surfaces.
  • the drawback of this device is that relatively large temperature differences may develop at the various locations inside said room, as well as draught, due to the fact that the air which is blown into the room does not mix very well with the hot air which is present in the room.
  • the air flow that is produced near the ceiling diverges little in horizontal direction and obtains a relatively large horizontal direction component.
  • the inflowing air usually has a temperature which is lower than that of the air which is present inside the room to be ventilated, so that said incoming air will flow in downward direction after having covered some distance along the ceiling. Since the relatively cold air remains longer in the upper part of the room in comparison with ventilation systems which cause the air to flow downwards directly, hot air, which after all rises towards the ceiling, will have more time to mix with the cold air. The air will then flow back along the floor surface to the place above which the inflow opening is disposed, and, heated by the living creatures which are present in said room, rise towards the outflow opening. In this manner an air circulation is started and maintained in the room.
  • the width of the outflow opening is varied in order to regulate the amount of air that flows through and/or to regulate the outflow velocity of the air.
  • the width of the outflow opening is thereby preferably varied in dependence on the difference in pressure between the inflowing air and the outflowing air.
  • said width is adjusted by means of a valve, which is moved in a direction substantially perpendicularly to the ceiling. As a result, the valve can be moved with little resistance, in contrast to horizontally moving valves.
  • the shape of the valve makes it possible to seal the outflow opening hermetically in a simple manner through elastic deformation at the edges of the valve.
  • the valve is preferably moved by a motor, in particular an electric motor. This makes it possible to regulate the ventilation in an efficient manner in dependence on the conditions in the stable, without human interference being required.
  • the air is directed in two horizontally opposed directions from substantially the same location near the ceiling. According to another possibility, the air flows out horizontally in only one direction for use near the sides of the room to be ventilated. However, this embodiment does not fall within the scope of the claims.
  • the advantages of the present ventilation system are utilized particularly well as the air flows out from at least two locations near the ceiling, wherein elongated outflow openings extend substantially parallel to each other. It is preferable to direct the air flows from two adjacent locations towards each other. This will cause outflowing air to flow downwards approximately between two outflow openings, and an air circulation will be maintained in an efficient manner through induction. The inflowing air is thereby mixed well with the air which is present in the room. A good air circulation can also take place when only one outflow opening is used in smaller rooms.
  • the air flows to the room as a result of an underpressure being generated in the room.
  • an overpressure can be generated in the supply space above the outflow openings.
  • the invention furthermore relates to a room comprising a ceiling in which the outflow fixture is present.
  • the outflow fixture according to Figures 1, 2 and 3 includes a fixed part 2, which can be mounted in a ceiling, and a movable part, or valve 7, which can be moved in vertical direction with respect to the fixed part 2.
  • Fixed part 2 consists of an upper part 3 and a lower part 4.
  • Figure 2 shows part of a ceiling plate 1, which forms part of a ceiling of the room which is to be ventilated.
  • the fixed part 2 of the fixture can be attached to the ceiling plate 1 by placing it into a recess in the ceiling plate in such a manner that the upper part 3 abuts with a flange 15 against the ceiling plate 1 on the upper side and the part 4 of the fixed part 2 abuts with a flange 16 against the underside of the ceiling plate 1.
  • the upper part 3 and the lower part 4 are interconnected by means of bolts 5, which are screwed into holes in upper part 3. The bolts 5 are tightened so that the flanges 15, 16 clamp against the ceiling plate 1.
  • the fixed part 2 of the fixture which is mounted in the ceiling plate 1 bounds an opening, through which air is led downwards from the upper side as a result of the fact that the air pressure above ceiling plate 1 is higher than under ceiling plate 1.
  • This difference in air pressure can be effected by drawing off air from the space under the ceiling and/or by supplying air above the ceiling plate 1.
  • valve 7 Mounted within the fixed part 2 of the fixture is a valve 7, which in an upper position (shown in Figure 2) joins the fixed part 3, and which in a lower position (shown in Figure 1) forms the lower boundary of an outflow opening 17, such that the entire outflow opening 17 is located under the level of ceiling 1, wherein the plane in which the outflow opening lies is oriented substantially vertically.
  • Flange 16 thereby forms the upper boundary of said outflow opening 17.
  • the fixed part 2 and the valve 7 are shaped such that the narrowing of the outflow opening 17 takes place gradually in any open position of the valve 7, so that a directed air flow along ceiling plate 1 is obtained.
  • valve 7 is so flexible that a proper seal is obtained in the closed position of the valve, wherein the material of the valve is deformed near the edge thereof.
  • the illustrated fixture includes two elongated parts which form the outflow opening 17 for the air, which parts extend parallel to the ceiling. As a result of this arrangement, the air is blown substantially in two opposed directions.
  • the parts are interconnected at their ends, so that a small amount of air flows in other directions.
  • the width of an outflow opening is less than 5 cm, whilst the length of an elongated part is more than 50 cm.
  • valve 7 in the fixed part 2 of the fixture is adjusted by means of a stepping motor 8 ( Figure 3) which is mounted in valve 7. To that end valve 7 forms a hollow space, which is covered by means of a cover 11, which is clamped to the other part of fixed 7 or otherwise attached thereto.
  • Stepping motor 8 includes a vertical shaft, on which the arm 9 is mounted.
  • Two pull/push rods 10 are attached to the end of arm 9, which rods are each connected to a lever 6.
  • the part of the lever 6 which is connected to lower part 4 extends upwards from part 4 at an angle of about 30° with the horizontal plane, seen in projection on a vertical plate which intersects the fixture in longitudinal direction.
  • valve 7 moves down from the closed position with respect to fixed part 2, wherein the part of lever 6 that is connected to part 4 moves through the horizontal plane and extends downwards from part 4 at angle of approximately 30° in the most open position, seen in the aforesaid projection.
  • Stepping motor 8 can be rotated in the opposite direction so as to close valve 7.
  • Figure 4 shows the air flow through the outflow fixture, which is represented very schematically in said figure.
  • Arrow 18 indicates the possible movement of valve 7.
  • the other arrows broadly indicate the direction and the order of magnitude of the velocity of the air flow.
  • the air flow 19 from above is led to the narrowest part 17 of the fixture and accelerated by the walls of the fixed part 2 and the movable part 7 (valve), which narrowest part 17 forms the outflow opening.
  • the air which exits the outflow opening 17 is directed along the ceiling plate 1, as is indicated by arrows 21.
  • the air 22 that rises under the fixture, which is indicated by arrows, is carried along by the air flowing out of openings 17, which enhances the rising of said air.
  • the convex shape of cover 7 is conducive towards said flow.
  • Figure 5 shows a room in which several elongated outflow fixtures are disposed in parallel relationship, preferably substantially along the entire length or width of the room, wherein the air flows in two opposed directions from each fixture (2, 7), so that the air flows from two adjacent fixtures are directed towards each other.
  • said air flows, which are relatively cool in comparison with the air which is present inside the room, mix with the hot air that has risen to said upper layer, and subsequently meet halfway between the fixtures.
  • the combined air flow moves downwards in the direction of the floor 12 of the room, where a moderate air flow is formed, which feels pleasant to the people and/or animals that are present there.
  • the air which is heated by said people and/or animals will finally rise to the ceiling 1 near the fixtures and thus complete the circulation.
  • the inflowing air will flow out via ventilation openings in the walls of the room after having circulated a number of times.

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)
  • Ventilation (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Claims (19)

  1. Ausströmungsvorrichtung (2, 7), die in einer Decke anzubringen ist, mit einer Luftausströmungsöffnung (17), wobei die genannte Ausströmungsöffnung (17) zwei längliche und im wesentlichen parallele Teile aufweist, wobei die Ausströmungsöffhung (17) durch die Enden von zwei sich verengenden Oberflächen der genannten Ausströmungsvorrichtung (2, 7) gebildet ist, wobei die genannten sich verengenden Oberflächen so geformt sind, daß beim Betrieb die ausströmende Luft im wesentlichen parallel zu der Deckenfläche (1) gelenkt wird, dadurch gekennzeichnet, daß die obere Oberfläche der genannten Ausströmungsöffnung (17) durch einen Flansch (16) gebildet ist, der im angebrachten Zustand gegen die Unterseite der Deckenfläche (1) anstößt, wobei die beiden länglichen und im wesentlichen parallelen Teile in der Lage sind, die in Luft in horizontal entgegengesetzten Richtungen zu lenken.
  2. Ausströmungsvorrichtung (2, 7) nach Anspruch 1, dadurch gekennzeichnet, daß die Breite der Ausströmmgsöffnung (17) verändert werden kann, um die Menge an ausströmender Luft und/oder die Ausströmungsgeschwindigkeit der genannten Luft zu regulieren.
  3. Ausströmungsvorrichtung (2, 7) nach Anspruch 2, dadurch gekennzeichnet, daß ein Mittel vorgesehen ist, um die Breite der Ausströmungsöffnung (17) in Abhängigkeit von dem Druclcunterschied zwischen der einströmenden Luft und der ausströmenden Luft zu regulieren.
  4. Ausströmlmgsvorrichtung (2, 7) nach Anspruch 3, dadurch gekennzeichnet, daß die Breite der Ausströmungsöffnung mit Hilfe eines Ventils (7) eingestellt wird, welches in einer Richtung bewegt werden kann, die im wesentlichen senkrecht zu der Decke (1) ist.
  5. Ausströmungsvorrichtung (2, 7) nach Anspruch 4, dadurch gekennzeichnet, daß das Ventil (7) mit einem Motor (8) verbunden ist, insbesondere mit einem Elektromotor, der in der Lage ist, das Ventil (7) zu bewegen.
  6. Ausströmungsvorrichtung (2, 7) nach Anspruch 5, dadurch gekennzeichnet, daß das Ventil (7), zumindest in seinem Randbereich, aus einem flexiblen Material besteht, so daß das Material des Ventils (7) sich beim Schließen der Ausströmungsöffnung (17) verformt.
  7. Verfahren zum Belüften eines Raums, bei dem Luft in den Raum durch die Ausströmungsvorrichtung (2, 7) nach einem der vorangehenden Ansprüche 1 bis 16 geführt wird, die in der Decke angebracht ist.
  8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Breite der Ausströmungsöffnung (17) verändert wird, um die Menge der ausströmenden Luft und/oder die Ausströmungsgeschwindigkeit der genannten Luft zu regulieren.
  9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, daß die Breite der Ausströlmmgsöffnung (17) in Abhängigkeit von dem Druckunterschied zwischen der einströmenden Luft und der ausströmenden Luft verändert wird.
  10. Verfahren nach Anspruch 9, dadurch gekennzeichnet, daß die Breite der Ausströmungsöffnung (17) mit Hilfe eines Ventils (7) eingestellt wird, welches in einer Richtung bewegt werden kann, die im wesentlichen senkrecht zu der Decke (1) ist.
  11. Verfahren nach Anspruch 10, dadurch gekennzeichnet, daß das Ventil (7) durch einen Motor (8) bewegt wird, insbesondere durch einen Elektromotor.
  12. Verfahren nach einem der vorangehenden Ansprüche 7 bis 11, dadurch gekennzeichnet, daß die Luft in zwei horizontal entgegengesetzten Richtungen von im wesentlichen der gleichen Stelle in der Nähe der Decke (1) gerichtet wird.
  13. Verfahren nach einem der vorangehenden Ansprüche 7 bis 11, dadurch gekennzeichnet, daß die Luft von zumindest zwei Stellen in der Nähe der Decke (1) ausströmt.
  14. Verfahren nach Anspruch 13, dadurch gekennzeichnet, daß die Luftströmungen von zwei Stellen in der Nähe der Decke (1) in Richtung zueinander gerichtet sind.
  15. Verfahren nach einem der vorangehenden Ansprüche 7 bis 14, dadurch gekennzeichnet, daß die Luft zu dem Raum als ein Ergebnis eines Unterdrucks strömt, der in dem Raum erzeugt wird, oder eines Überdrucks, der in einem Bereich oberhalb der Decke (1) erzeugt wird.
  16. Raum mit einer Decke (1), in der sich die Ausströmungsvorrichtung (2, 7) nach einem der vorangehenden Ansprüche 1 bis 6 befindet.
  17. Raum nach Anspruch 16, dadurch gekennzeichnet, daß Ausströmungsöffnungen (17) an zumindest zwei Stellen in der Nähe der Decke (1) vorgesehen sind.
  18. Raum nach Anspruch 17, dadurch gekennzeichnet, daß die Ausströmungsöffnungen (17) an zumindest zwei unterschiedlichen Stellen im wesentlichen zueinander gerichtet sind.
  19. Raum nach einem der Ansprüche 16 bis 18, dadurch gekennzeichnet, daß Mittel vorhanden sind, um einen Unterdruck in dem Raum zu erzeugen, oder einen Überdruck in einem Bereich oberhalb der Decke (1).
EP00917477A 1999-03-30 2000-03-29 Vorrichtung und verfahren zum lüften eines raumes Expired - Lifetime EP1166017B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1011702A NL1011702C2 (nl) 1999-03-30 1999-03-30 Werkwijze en inrichting voor het ventileren van een ruimte.
NL1011702 1999-03-30
PCT/NL2000/000209 WO2000058670A1 (en) 1999-03-30 2000-03-29 Method and device for ventilating a room

Publications (2)

Publication Number Publication Date
EP1166017A1 EP1166017A1 (de) 2002-01-02
EP1166017B1 true EP1166017B1 (de) 2006-12-06

Family

ID=19768942

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00917477A Expired - Lifetime EP1166017B1 (de) 1999-03-30 2000-03-29 Vorrichtung und verfahren zum lüften eines raumes

Country Status (8)

Country Link
EP (1) EP1166017B1 (de)
AT (1) ATE347677T1 (de)
AU (1) AU3844100A (de)
DE (1) DE60032228T2 (de)
DK (1) DK1166017T3 (de)
ES (1) ES2273678T3 (de)
NL (1) NL1011702C2 (de)
WO (1) WO2000058670A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2866417B1 (fr) * 2004-02-18 2006-07-07 Sn Aircalo Dispositif de diffusion d'air en plafond et ventilo-convecteur equipe de ce dispositif
DE102019113400A1 (de) * 2019-05-20 2020-11-26 Christian Starck Befestigungsvorrichtung für einen Luftdurchlasseinrichtung

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE386973B (sv) * 1974-02-25 1976-08-23 Svenska Flaektfabriken Ab Anordning med atminstone ett stralmunstycke for luft
US4726285A (en) * 1985-10-16 1988-02-23 Kelley Winfield L Dimpled air distribution device
US5249602A (en) * 1989-07-04 1993-10-05 Laszlo Sandor Arrangement for flow control of gaseous and liquid media, particularly air
NO169406C (no) * 1990-03-21 1992-06-17 Per Bjarne Simble Luftdyse for rettet utstroemming av luft til et rom.
AUPM962894A0 (en) * 1994-11-23 1994-12-15 Donnelly, William James Air diffuser
FI99159C (fi) * 1995-01-20 1997-10-10 Halton Oy Tuloilmalaite ja menetelmä tuloilmalaitteen säädössä
US5569078A (en) * 1995-03-06 1996-10-29 Colorado State University Research Foundation Air diffuser having fixed and variable outlet ports

Also Published As

Publication number Publication date
NL1011702C2 (nl) 2000-10-03
AU3844100A (en) 2000-10-16
DE60032228D1 (de) 2007-01-18
ATE347677T1 (de) 2006-12-15
DE60032228T2 (de) 2007-09-13
ES2273678T3 (es) 2007-05-16
WO2000058670A1 (en) 2000-10-05
DK1166017T3 (da) 2007-04-02
EP1166017A1 (de) 2002-01-02

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