EP0899519B1 - Kanal zum Leiten und Verteilen von Luft - Google Patents

Kanal zum Leiten und Verteilen von Luft Download PDF

Info

Publication number
EP0899519B1
EP0899519B1 EP97830388A EP97830388A EP0899519B1 EP 0899519 B1 EP0899519 B1 EP 0899519B1 EP 97830388 A EP97830388 A EP 97830388A EP 97830388 A EP97830388 A EP 97830388A EP 0899519 B1 EP0899519 B1 EP 0899519B1
Authority
EP
European Patent Office
Prior art keywords
elongated body
channel
air
holes
series
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
EP97830388A
Other languages
English (en)
French (fr)
Other versions
EP0899519A1 (de
Inventor
Marco Zambolin
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE69702056T priority Critical patent/DE69702056D1/de
Priority to EP97830388A priority patent/EP0899519B1/de
Publication of EP0899519A1 publication Critical patent/EP0899519A1/de
Application granted granted Critical
Publication of EP0899519B1 publication Critical patent/EP0899519B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F24F13/0254—Ducting arrangements characterised by their mounting means, e.g. supports
    • 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
    • F24F13/0218—Flexible soft ducts, e.g. ducts made of permeable textiles
    • 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
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0608—Perforated ducts

Definitions

  • the present invention relates to an air-conveying and distributing channel.
  • thermal-ventilation plants which are comprised of channels or ducts capable of distributing predetermined amounts of air optionally previously processed from a thermal point of view, following a given logic.
  • Metal ducts at a side surface thereof are provided with openings for discharge of the air they convey and along their longitudinal extension they have a substantially constant section over pieces of predetermined length suitably connected with each other.
  • metal-made distributing ducts or channels are very expensive and of great weight so that employment of very strong support means is required, which will contribute to increase weight of same and the setting-up costs for the overall structure.
  • metal ducts must necessarily process air at relatively low velocities in order to avoid problems connected with high losses of head and also, in particular at the air discharge openings, problems of the acoustic type because if air passes through said openings at a very high exit velocity, a maddening noise would occur as a result of vibrations of the metal sheet at said discharge openings.
  • channels of deformable material can ensure a greater amount of processed air per unit time, their section being the same, because the materials used to make them are intrinsically capable of absorbing vibrations, due in particular to the deformable character characterizing them, thereby solving problems of the acoustic type at the air-distribution holes provided in the channel wall.
  • the above described channels are usually of cylindrical conformation and have one open end or delivery end which is put into fluid communication with the conditioning plant with which the channel is associated, and a second end which is terminally closed.
  • the apparatus presents a tubolar body which is composed of a metallic base covered by a flexible portion made of textile material.
  • the metallic base is constant in section and presents holes or openings for disharge of the air that the tubolar body conveys.
  • the upper flexible portion is airtight and presents a section which progressively decreases away from the air feeding means.
  • channels of deformable material are taking an increasingly more important role within the field of thermal-ventilation plants.
  • the operating efficiency of the channels of known type is not constant over their longitudinal extension. This is due to the fact that the flow rate entering the delivery end decreases as it moves on along the channel, due to the distribution perforations present in the side wall of said channel. It is therefore apparent that the fluid-movement conditions existing within the channel, in particular in terms of flow velocity, are adversely affected to a great extent by this factor so that there is a varying air distribution through the delivery holes along the longitudinal extension of the channel.
  • the present invention aims at substantially solving all the above mentioned drawbacks.
  • an air-conveying and distributing channel in accordance with the present invention has been generally identified by reference numeral 1.
  • the conveying channel 1 comprises an elongated body 2 of tubular conformation and flexible structure.
  • the elongated body 2 has at least one end 2a for air delivery as well as a second end 2b opposite to the first end which is generally closed.
  • support means generally denoted by 3, which is arranged to enable engagement of the elongated body with a wall or a ceiling, for example.
  • support means 3 of different conformation may be provided, as specifically shown in Figs. 1 to 9.
  • the elongated body 2 can have a transverse section either of circular conformation (Figs. 5 and 6), semicircular conformation (Fig. 8), in the form of a quarter of a circumference (Fig. 9), in the form of an arc of a circumference connected to a straight line (Fig. 3), in the form of an arc of a circumference connected to a curved line (Fig. 7), or of any other conformation, depending on the operating requirements that may occur each time.
  • the support means advantageously comprises at least one guide rail or steel cable 4, at least one engagement portion 5 emerging from the elongated body and having a predetermined number of elongated engagement holes 5a, and a plurality of carriages 6 which are each in engagement with at least a corresponding one of said elongated holes 5a and also slidably associated with said rail 4.
  • rail 4 normally consists of at least one section member defining slide tracks 7 in which the rolling elements 8 of each carriage 6 engage. It is to note that, depending on the conformations in transverse section of the elongated body 2, employment either of a single rail 4 or of a pair of rails set in place at symmetrically opposite positions, or even of three rails as shown in Fig. 9, may be provided.
  • the elongated body 2 is also provided with air-delivery means generally identified by 9, which is operatively associated with at least one side wall of the elongated body to create a fluid communication between chamber 10 at the inside of duct 2 and the external environment, for the purpose of carrying out the desired air distribution.
  • the delivery means 9 advantageously comprises a first and a second series of holes 11 and 12 homogeneously distributed along the side wall of the elongated body 2.
  • Holes 11 of the first series have an air-passage section of a lower area than the air-passage section of the holes of the second series. In this way, the holes of the first series are passed through by an air flow of high speed and great turbulence.
  • Holes 12 of the second series are passed through by flows of greater flow rate but at a greatly lower velocity, as compared with that of flows passing through holes 11.
  • the holes of the second series are normally disposed close to those of the first series, according to a varying arrangement and geometry, depending on requirements. More generally, the holes of the second series are used to direct and establish a throw for the flow coming out of the elongated body 2.
  • the holes of the first and second series are distributed in respective rectilinear lines disposed mutually in side by side relationship.
  • the delivery means may also be provided to comprise a plurality of through openings disposed mutually in side by side relationship and defining at least one longitudinal grating that can extend along the side wall of the elongated body 2. In some cases, two or more longitudinal gratings conveniently disposed along the side surface of the elongated body 2 may be also provided.
  • the elongated body 2 has a transverse section of decreasing area away from the first end 2a.
  • This type of solution makes it possible to carry out that which is defined by those skilled in the art as a "dynamic recovery", i.e. the duct capability to substantially keep the flow velocity constant along the longitudinal extension of body 2, in spite of the fluid mass gradually coming out of holes 11 and 12.
  • the transverse section will be linearly decreasing so that the elongated body will have a substantially frusto-conical conformation.
  • the transverse section may be provided to decrease in a different manner from the one described above.
  • the elongated body is made of a sheet material comprising an inner layer, made of a fabric material for example, and an outer covering layer, of an impermeable material for example. More specifically, for making the inner fabric layer synthetic fibres can be utilized such as glass fibres and polyester yarns, while the covering layer may be made of PVC, silicone, polyurethane or still other materials.
  • the fabric layer will be covered with a covering layer preferably by coating.
  • the sheet may be also completely made of a plastic material such sized as to ensure an appropriate strength and good flexibility, and provided or not with porosities distributed in a more or less homogeneous manner, depending on requirements.
  • the elongated body 2 will be arranged so that it extends substantially horizontally or substantially vertically, depending on the operating requirements and the available spaces, without any modification to the overall structure of channel 1 being needed because, due to the conformation of the elongated body and support means 3, this channel adapts itself to any type of disposition very well.
  • the elongated body 2 can be provided with a condensate-collecting element 13 which is disposed below the elongated body itself (see Fig. 10).
  • the elongated body will have one side 14 facing the collecting element that will slope from bottom to top away from the first end 2a, whereas the opposite side 15 is maintained in a horizontal position to enable an appropriate engagement with a ceiling, for example.
  • the collecting element 13 preferably extends along the elongated body parallelly to said side 14 so that it slopes from bottom to top as well, away from the first end of the elongated body.
  • the collecting element may be a section member of metal or plastic material for example, coupled by fitting with a corresponding projection 16 integral with the side wall of the elongated body 2 or linked to one or more rails 4 by a predetermined number of supporting belts 17.
  • channel 1 Under operating conditions, after channel 1 has been set up, air is sent into the elongated body 2 through the first end 2a so that the channel passes from a deflated condition shown in chain line in the illustrative figures 5, 6, 7 and 8, to an inflated condition shown in solid line.
  • holes 11 and 12 of the first and second series are partly and progressively discharged through holes 11 and 12 of the first and second series.
  • holes of the first series cause a strong induction effect so that a great air mass is involved
  • holes 12 of the second series serve to direct the air collected from holes 11 and establish the distance said air is to be sent.
  • the invention achieves important advantages.
  • channel 1 substantially solves all drawbacks typical of the prior art and, as already said, succeeds in ensuring an excellent operating efficiency and behavioural uniformity along the whole extension of body 2, while at the same time, due to the presence of the first and second holes, solving all thermal-stratification problems.
  • channel 1 substantially ensures the absence of problems connected with condensate formation due to the presence of humidity in the air, since a very intense dynamic condition exists around the side surface of the elongated body 2.
  • the particular conformation of the channel in reference is advantageous in the starting step before normal working conditions have been reached because the progressive section reduction ensures an important stiffness, the materials being the same, and therefore practically minimum waving problems, which will result in easier setting up. It is to point out that if the transverse section at the second end 2b is reduced to such a point that a body 2 of conical conformation is defined, the waving effects due to creation of a condition of overpressure at the end 2b will be reduced to a minimum.
  • the particular conformation of the support means 3 provided with rails 4 and carriages 6 is economical from a construction point of view and very efficient as regards operation so that the overall costs are reduced and a strong structure, reliable in time, is ensured.
  • rails create a better support and ensure a correct expansion of the channel body relative to supports using a steel cable.
  • the elongated body is made of two layers, a great strength and at the same time an appropriate flexibility is ensured to the structure which, obviously, is advantageous for a correct operation of the channel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Duct Arrangements (AREA)

Claims (10)

  1. Luftförder- und Verteilerleitung, umfassend:
    ein verlängertes Gehäuse (2) rohrförmiger Ausbildung mit mindestens einem Ende (2a) zur Abgabe der Luft;
    dem verlängerten Gehäuse wirksam zugeordnete Haltermittel;
    Luftabgabemittel (9), die mindestens einer Wand des verlängerten Gehäuses zur Durchführung der Verteilung der Luft nach außen zugeordnet sind, wobei das verlängerte Gehäuse (2) einen Querschnitt aufweist, dessen Fläche in Richtung vom genannten Ende weg abnimmt, dadurch gekennzeichnet, dass der verlängerte Körper vollständig aus biegsamem Material besteht und dass die Querschnitte des verlängerten Gehäuses (2) im wesentlichen an jeder Stelle ihres Profils in Richtung von der Luftabgabe weg allmählich abnimmt.
  2. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass das verlängerte Gehäuse (2) einen Querschnitt mit linearer Abnahme in Richtung vom genannten Ende weg und bevorzugter Weise eine im wesentlichen kegelstumpfförmige Ausbildung besitzt.
  3. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass das verlängerte Gehäuse (2) mit einer Kunststofffolie ausgeführt oder, wechselweise mit mindestens einer inneren Gewebelage und mindestens einer Verkleidung aus undurchlässigem Material ausgeführt ist, die außen auf der inneren Lage angebracht ist.
  4. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass die Luftabgabemittel (9) mindestens eine Lochreihe von Löchern (11) umfassen , die längs einer Wand des verlängerten Gehäuses (2) verteilt sind.
  5. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass die Luftabgabemittel (9) mindestens eine zweite Lochreihe (12) von Löchern umfassen, die längs eine Wand des verlängerten Gehäuses (2) verteilt sind, dass die Löcher der ersten Lochreihe einen Luftdurchtrittsquerschnitt mit einer Fläche aufweisen, die kleiner als die der Löcher der zweiten Lochreihe ist, und dass bevorzugter Weise die Löcher der ersten und der zweiten Lochreihe gemäß entsprechenden zu einander angereihten geraden Linien verteilt sind.
  6. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass die Luftabgabemittel (9) Porositäten aufweisen, die mindestens auf einer Seitenfläche des verlängerten Gehäuses verteilt sind.
  7. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass die Luftabgabemittel (9) eine Vielzahl von aneinander gereihten Durchgangsöffnungen umfassen, die mindestens ein Längsnetz festlegen, das sich mindestens längs einer Wand des verlängerten Gehäuses erstreckt.
  8. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass die Haltermittel (3) umfassen:
    mindestens eine Führungsstange oder ein Führungskabel aus Stahl (4);
    mindestens einen Eingriffsteil (5), der von einer Seitenwand des verlängerten Gehäuses radial vorspringt und eine vorgegebene Anzahl von verlängerten Eingriffslöchern (5a) festlegt; und
    eine Vielzahl von Laufgestellen (6), die jeweils in mindestens einem der entsprechenden, verlängerten Löcher eingreifen und der Führungsstange verstellbar zugeordnet sind.
  9. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass dem verlängerten Gehäuse (2) zugeordnet ein Kondensauffangelement (13) vorliegt, das unterhalb des verlängerten Gehäuses selbst angeordnet ist.
  10. Leitung nach Anspruch 1, dadurch gekennzeichnet, dass unter Arbeitsbedingungen das verlängerte Gehäuse (2) sich in einer im wesentlichen horizontalen oder im wesentlichen vertikalen Richtung erstreckt.
EP97830388A 1997-07-24 1997-07-24 Kanal zum Leiten und Verteilen von Luft Expired - Lifetime EP0899519B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE69702056T DE69702056D1 (de) 1997-07-24 1997-07-24 Kanal zum Leiten und Verteilen von Luft
EP97830388A EP0899519B1 (de) 1997-07-24 1997-07-24 Kanal zum Leiten und Verteilen von Luft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97830388A EP0899519B1 (de) 1997-07-24 1997-07-24 Kanal zum Leiten und Verteilen von Luft

Publications (2)

Publication Number Publication Date
EP0899519A1 EP0899519A1 (de) 1999-03-03
EP0899519B1 true EP0899519B1 (de) 2000-05-17

Family

ID=8230732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830388A Expired - Lifetime EP0899519B1 (de) 1997-07-24 1997-07-24 Kanal zum Leiten und Verteilen von Luft

Country Status (2)

Country Link
EP (1) EP0899519B1 (de)
DE (1) DE69702056D1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9039503B2 (en) 2008-02-29 2015-05-26 Rite-Hite Holding Corporation Longitudinally split fabric air duct
DE102021121007A1 (de) 2021-08-12 2023-02-16 Ford Global Technologies, Llc Lüftungsvorrichtung zur Lüftung eines Innenraumes

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6280320B1 (en) 1999-07-13 2001-08-28 Rite-Hite Holding Corporation Frame to support a deflated fabric air duct
NL1013242C2 (nl) * 1999-10-08 2001-04-23 Joule Venture Holding B V Luchtkanaal.
FR2800854B1 (fr) * 1999-11-08 2002-01-04 Diffusion Thermique Ouest Sa Systeme de diffusion d'air
US6558250B1 (en) 2000-10-23 2003-05-06 Nicolas B. Paschke Fabric flow restriction and method for restricting a fabric duct
US6565430B2 (en) 2001-09-13 2003-05-20 Rite-Hite Holding Corporation Pliable air duct with dust and condensation repellency
US6960130B2 (en) 2003-05-12 2005-11-01 Rite-Hite Holding Corporation Fabric air duct with directional vent
US20060252365A1 (en) * 2005-05-04 2006-11-09 Gebke Kevin J Pliable air duct with pressure responsive discharge outlets
SE530545C2 (sv) * 2006-05-03 2008-07-01 Bengt Selloe Ab Beslag för upphängning av ett tilluftdon
US9518756B2 (en) * 2006-11-15 2016-12-13 Rite-Hite Holding Corporation External rib cage for an inflatable air duct
FR2915272B1 (fr) * 2007-04-18 2012-12-28 Groupe Solu Allience Dispositif de ventilation de cellule.
PL387210A1 (pl) * 2009-02-05 2010-08-16 Dospel Spółka Z Ograniczoną Odpowiedzialnością System elementów kanału wentylacyjnego
IT1397501B1 (it) * 2009-04-14 2013-01-16 Zambolin Impianto per il trattamento dell'aria
DE102010006360A1 (de) * 2010-01-29 2011-08-04 H. Lüdi + Co. AG Gas- und Energiesysteme Mediendecke mit einem flexiblen Zuluftkanal
ITVI20100053A1 (it) * 2010-02-26 2011-08-27 Luca Tondin Diffusore di aria
CZ2013840A3 (cs) * 2013-11-01 2015-01-28 Příhoda S.R.O. Vzduchotechnický dílec
DE202015101719U1 (de) * 2015-04-08 2016-07-13 ORAVEN GmbH Luftverteilsystem
IT201700111217A1 (it) * 2017-10-04 2019-04-04 Oneair S R L Condotto diffusore microforato per impianti di distribuzione di aria e opzionalmente anche di illuminazione, relativa canalizzazione e relativi metodi di realizzazione
IT201800002955A1 (it) * 2018-02-22 2019-08-22 Oneair S R L Condotto di diffusione di aria, relativa canalizzazione di diffusione e impianto di distribuzione di aria
FR3078087B1 (fr) * 2018-02-22 2020-03-20 Skot Systeme d'aeration pour un batiment
IT202000008260A1 (it) * 2020-04-17 2021-10-17 Rosso Officine S R L Canale microforato per la distribuzione dell’aria avente caratteristiche antibatteriche

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175892A1 (de) * 1984-09-10 1986-04-02 AMELIORAIR S.A. Société dite : Gas, insbesondere Luftverteilungskanal für einen Raum
EP0510946A2 (de) * 1991-04-23 1992-10-28 Kawasaki Steel Corporation Vorrichtung für die Zufuhr von Luft

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2857108A (en) * 1954-10-18 1958-10-21 James O Wallace Greenhouse heating system
GB1317833A (en) * 1968-05-02 1973-05-23 Howorth & Co Ltd James Operating theatres
GB2135442A (en) * 1983-02-24 1984-08-30 Howorth Air Eng Ltd Air supply duct
US5137057A (en) * 1989-05-26 1992-08-11 Hummert Iii August H Flexible duct and method of suspending a duct
DK12792D0 (da) * 1992-02-03 1992-02-03 Ke Safematic As Ventilationssystem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0175892A1 (de) * 1984-09-10 1986-04-02 AMELIORAIR S.A. Société dite : Gas, insbesondere Luftverteilungskanal für einen Raum
EP0510946A2 (de) * 1991-04-23 1992-10-28 Kawasaki Steel Corporation Vorrichtung für die Zufuhr von Luft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9039503B2 (en) 2008-02-29 2015-05-26 Rite-Hite Holding Corporation Longitudinally split fabric air duct
DE102021121007A1 (de) 2021-08-12 2023-02-16 Ford Global Technologies, Llc Lüftungsvorrichtung zur Lüftung eines Innenraumes

Also Published As

Publication number Publication date
EP0899519A1 (de) 1999-03-03
DE69702056D1 (de) 2000-06-21

Similar Documents

Publication Publication Date Title
EP0899519B1 (de) Kanal zum Leiten und Verteilen von Luft
US5490813A (en) Air injection tube and a method for air injection
US5696361A (en) Multi-ducts sound eliminator for air pipe
US6565430B2 (en) Pliable air duct with dust and condensation repellency
US7597617B2 (en) Gas diffusion device
US20040229559A1 (en) Fabric air duct with directional vent
WO2002035129A3 (en) Fabric flow restriction and method for restricting a fabric duct
EP0862776A1 (de) Akustischer resonator
EP1214486A4 (de) Akustische geräuschdämpferdüse
US6253873B1 (en) Gas guide element with sound-absorbent walls for blocking and damping noise spreading from it into main conduits
ITMI940432A1 (it) Conduttura con bocchette di erogazione del fluido trasportato, particolarmente per impianti per il condizionamento di ambienti civili o industriali
CA2154735A1 (en) Laminar Air Diffuser
US2976794A (en) High-velocity primary air nozzle
EP2573479A2 (de) Luftverteilungsrohr
JP3530821B2 (ja) 工業空気チャンネル用のリアクティブ形サイレンサー及びその使用方法
US6059655A (en) Fabric air diffuser, method for diffusing air, and method for attenuating noise associated with flowing air
JPH0941940A (ja) 主通路内を伝播するノイズを吸音・消音するために吸音性の壁を有するガス案内エレメント
FI72800C (fi) Ventilationsroer.
AU768165B2 (en) Device for diffusing sterile air
KR800000395B1 (ko) 에어콘 터미날
AU753367B2 (en) Device for diffusing sterilized air in a fabric sheath
FI84751C (fi) Tilluftsanordning.
ITMI961099A1 (it) Canale di convogliamento e distribuzione aria
CZ27289U1 (cs) Vzduchotechnické potrubí
RU2031325C1 (ru) Воздухораспределительный насадок

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19981014

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE CH DE DK ES FR GB IT LI NL PT

AX Request for extension of the european patent

Free format text: AL;LT;LV;RO;SI

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

AKX Designation fees paid

Free format text: BE CH DE DK ES FR GB IT LI NL PT

AXX Extension fees paid

Free format text: SI PAYMENT 19990830

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE CH DE DK ES FR GB IT LI NL PT

AX Request for extension of the european patent

Free format text: SI PAYMENT 19990830

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000517

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000517

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 20000517

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000517

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000517

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69702056

Country of ref document: DE

Date of ref document: 20000621

ITF It: translation for a ep patent filed
ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000817

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000817

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20000818

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010724

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20010724

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20120724

Year of fee payment: 16

Ref country code: FR

Payment date: 20120810

Year of fee payment: 16

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130724