EP0899519B1 - Conduit de transport et de distribution d'air - Google Patents

Conduit de transport et de distribution d'air Download PDF

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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
German (de)
English (en)
Other versions
EP0899519A1 (fr
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP97830388A priority Critical patent/EP0899519B1/fr
Priority to DE69702056T priority patent/DE69702056D1/de
Publication of EP0899519A1 publication Critical patent/EP0899519A1/fr
Application granted granted Critical
Publication of EP0899519B1 publication Critical patent/EP0899519B1/fr
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
    • F24F13/0254—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.

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  • 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. Canal pour le transport et la distribution d'air comprenant:
    un corps allongé (2) de forme tubulaire ayant au moins une extrémité (2a) sur la distribution de l'air;
    moyens de support (3) associés activement audit corps allongé;
    moyens pour la distribution de l'air (9) associés activement au moins à une paroi dudit corps allongé, pour réaliser la distribution dudit air vers l'extérieur, ledit corps allongé (2) ayant une section transversale dont la surface se réduit en s'éloignant de ladite extrémité, caractérisé en ce que le corps allongé est entièrement d'un matériel flexible et que les sections transversales du corps allongé (2) se réduisent peu à peu, substantiellement dans chaque point de leur silhouette, en s'éloignant de ladite distribution de l'air.
  2. Canal suivant la revendication 1, caractérisé en ce que ledit corps allongé (2) a une section transversale qui se réduit linéairement en s'éloignant de ladite extrémité, et il présente de préférence une forme substantiellement en tronc de cône.
  3. Canal suivant la revendication 1, caractérisé en ce que ledit corps allongé (2) se compose d'une feuille en matériel plastique ou, alternativement, du moins d'une couche intérieure en tissu et du moins d'une couche de couverture en matériel imperméable appliquée à l'extérieur de ladite couche intérieure.
  4. Canal suivant la revendication 1, caractérisé en ce que lesdits moyens de distribution de l'air (9) comprennent au moins une première série de trous (11) disposés le long d'une paroi dudit corps allongé (2).
  5. Canal suivant la revendication 1, caractérisé en ce que lesdits moyens de distribution de l'air (9) comprennent au moins une deuxième série de trous (12) disposés le long d'une paroi dudit corps allongé (2), que les trous de ladite première série ont une section pour le passage de l'air avec une surface plus petite que les trous de ladite deuxième série, et que les trous de ladite première et de ladite deuxième série sont disposés de préférence selon des lignes droites placées l'une à côté de l'autre.
  6. Canal suivant la revendication 1, caractérisé en ce que lesdits moyens de distribution (9) comprennent des pores disposés au moins sur une surface latérale dudit corps allongé.
  7. Canal suivant la revendication 1, caractérisé en ce que lesdits moyens de distribution (9) comprennent une pluralité d'orifices de passage placés l'un à côté de l'autre, qui forment au moins un réseau longitudinal qui s'étend le long au moins d'une paroi dudit corps allongé.
  8. Canal suivant la revendication 1, caractérisé en ce que lesdits moyens de support (3) comprennent
    au moins une tige de guidage ou bien un câble de guidage en acier (4);
    au moins une partie d'engagement (5) saillant radialement d'une paroi latérale dudit corps allongé et définissant un nombre préétabli de trous d'engagement allongés (5a); et
    une pluralité de chariots (6), chacun étant engagé avec au moins un desdits trous allongés correspondants, et étant associé de façon coulissante à ladite tige.
  9. Canal suivant la revendication 1, caractérisé en ce que on a pourvu un élément pour la récolte du condensat (13), ledit élément étant associé activement audit corps allongé (2) et étant placé sous ledit corps allongé.
  10. Canal suivant la revendication 1, caractérisé en ce que, dans des conditions opérationnelles, le corps allongé (2) s'étend en direction substantiellement horizontale ou substantiellement verticale.
EP97830388A 1997-07-24 1997-07-24 Conduit de transport et de distribution d'air Expired - Lifetime EP0899519B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP97830388A EP0899519B1 (fr) 1997-07-24 1997-07-24 Conduit de transport et de distribution d'air
DE69702056T DE69702056D1 (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 (fr) 1997-07-24 1997-07-24 Conduit de transport et de distribution d'air

Publications (2)

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

Family

ID=8230732

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97830388A Expired - Lifetime EP0899519B1 (fr) 1997-07-24 1997-07-24 Conduit de transport et de distribution d'air

Country Status (2)

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

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 (21)

* 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
FR3078087B1 (fr) * 2018-02-22 2020-03-20 Skot Systeme d'aeration pour un batiment
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
IT202000008260A1 (it) * 2020-04-17 2021-10-17 Rosso Officine S R L Canale microforato per la distribuzione dell’aria avente caratteristiche antibatteriche
US20220349613A1 (en) * 2021-04-28 2022-11-03 Captive-Aire Systems, Inc. Supply air duct with integral nozzles for diffusing supply air along the length of the supply air duct

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0175892A1 (fr) * 1984-09-10 1986-04-02 AMELIORAIR S.A. Société dite : Gaine de distribution de gaz dans une enceinte notamment de distribution d'air dans un local
EP0510946A2 (fr) * 1991-04-23 1992-10-28 Kawasaki Steel Corporation Appareil d'alimentation en air

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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 (fr) * 1984-09-10 1986-04-02 AMELIORAIR S.A. Société dite : Gaine de distribution de gaz dans une enceinte notamment de distribution d'air dans un local
EP0510946A2 (fr) * 1991-04-23 1992-10-28 Kawasaki Steel Corporation Appareil d'alimentation en air

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 (fr) 1999-03-03
DE69702056D1 (de) 2000-06-21

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