EP1141636B1 - Dispositif de diffusion d'air sterile dans une gaine textile - Google Patents
Dispositif de diffusion d'air sterile dans une gaine textile Download PDFInfo
- Publication number
- EP1141636B1 EP1141636B1 EP99961093A EP99961093A EP1141636B1 EP 1141636 B1 EP1141636 B1 EP 1141636B1 EP 99961093 A EP99961093 A EP 99961093A EP 99961093 A EP99961093 A EP 99961093A EP 1141636 B1 EP1141636 B1 EP 1141636B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheath
- sterile air
- diffusion
- diffusion cone
- longitudinal axis
- 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
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
- F24F13/0218—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 generally to protection close to a work station or a conveyor located in an atmosphere contaminated, and more particularly a close protection device for products sensitive to contamination by contaminating agents carried by the atmosphere, said products being positioned on a work surface or conveyor.
- sheath of flexible material for the close protection of products placed on a conveyor or work surface, sensitive to contamination conveyed by the atmosphere, by diffusion of a vein sterile air, especially in a direction substantially perpendicular to said conveyor or work surface, said sheath defining an air supply duct sterile, presenting a geometric singularity.
- a sheath of this type is formed, in a manner known per se, of a wall waterproof and a porous wall of flexible perforated material, such as a material textile, extending longitudinally along the axis of the sheath.
- singularity is understood here to mean an elbow, a stitching or else a change of section of the sheath for example.
- the depression zone thus created inside the sheath just after the singularity can cause suction of external air inside the sheath which causes contamination of the sterile air diffused by said sheath.
- the flexible material constituting the porous wall of the protective sheath is very porous, it is sucked towards the inside of the sheath where the depression zone is thus created, and there is a phenomenon of trembling or fluttering of the porous wall of the sheath. This phenomenon then disturbs the speed profile of the sterile air leaving the sheath and the homogeneity of the sterile protective air flow is no longer guaranteed.
- the present invention provides a new sheath made of flexible protective material by sterile air diffusion, type defined previously in the introduction, which has an internal arrangement allowing to refocus the sterile air speed profile at the exit of a singularity of said sheath so as to maintain the static pressure therein at a level high enough to avoid creating a depression area.
- the invention also provides a sheath of flexible material for the close protection of products placed on a work surface, sensitive to contamination conveyed by the atmosphere, by diffusion of a sterile air stream, in particular in a direction substantially perpendicular to said work plane, said sheath defining a sterile air supply duct and having a geometric singularity, and it is provided in said supply duct, just after said singularity by considering the direction of flow of sterile air in said duct, a sterile air diffusion hemisphere oriented in the direction of the sterile air flow and centered on the longitudinal axis X of the sheath.
- FIGS 1 to 3 there is shown a sheath 10 of flexible material for close protection of products placed on a conveyor or a work (not shown), sensitive to contamination conveyed by the atmosphere, by diffusion of sterile air, in particular in a substantially perpendicular direction audit conveyor.
- sheath 10 will not be described here in detail, and reference is made to the document WO 97/40325 belonging to the Applicant with regard to the detailed description of a preferred embodiment of such a sheath.
- the sheath 10 has a cylindrical shape of revolution around the longitudinal axis X, and comprises a upper wall 11 made of low porosity textile material or film plastic, forming the upper half-perimeter of the sheath 10, and a porous wall lower 12 forming the lower half-perimeter of the sheath 10. Said walls 11, 12 extend longitudinally along the longitudinal X axis of the sheath 10.
- the fabric used to make the upper half-sheath 11 of the sheath 10 is, for example a polyester fiber fabric which has a porosity of 5 to 10 ⁇ m opening of meshes.
- the fabric used for the lower porous half-sheath 12 is, for example a polyester fiber fabric which has a porosity of 15 to 30 ⁇ m opening sts.
- the sheath 10 extends longitudinally parallel to the longitudinal edge of the conveyor or the work surface (not shown) over the entire length thereof.
- each external longitudinal end situated at the level a longitudinal edge of the conveyor, the upper half-sheath 11 of the sheath 10 can be extended tangentially by a skirt (not shown here).
- the two skirts located at each end of the upper half-sheath extend substantially perpendicular to the work surface or conveyor and have either equal lengths or different lengths between 50% and 100% of the existing height between the conveyor or work surface and the axis sheath median.
- This arrangement allows to ensure along the porous wall 12, a median diffusion of sterile air at slow speed and on both sides, diffusion lateral sterile air at higher speed.
- the sheath 10 has a low porosity wall extending over 75% of the perimeter of the sheath and a porous wall which occupies 25% of the perimeter of the sheath.
- the low porosity wall forms the upper part of the sheath and the wall porous forms the lower part of the sheath.
- the porous wall feeds a longitudinal diffusion pocket located in below it, the outer wall of which has two integral lateral bands longitudinal ends of the sealed wall and a porous central region bordered by two side slits adjacent to said watertight side bands.
- This arrangement also makes it possible to ensure a slow diffusion of air sterile via the middle zone of the longitudinal diffusion bag, this slow diffusion being framed by two fast jets.
- the sheath 10 has a singularity here.
- This singularity is constituted according to the mode of embodiment shown, by a central tap which consists of a conduit sterile air supply 20 extending along an axis Y perpendicular to the axis longitudinal X of the sheath and opening in this perpendicular direction in said sheath.
- the sterile air which flows in a vertical direction f flows in the sheath 10 in two directions opposite, generally along the longitudinal axis X of said sheath 10.
- the sterile air supply duct 20 is tightly mounted in the sealed upper wall 11 of the sterile sheath.
- the upper wall 11 of the sheath 10 has a part raised 14 which extends along the axis Y of said sterile air supply duct 20 and which has at its end an opening in which is for example fitted the supply duct 20.
- the tightness at the shank is achieved for example by a seal 15.
- the sterile air supply duct 20 of axis Y opens into the sterile air supply duct 13 delimited by the sheath at the face internal of the sealed upper wall 11 of said sheath 10.
- a sterile air diffusion cone 30 oriented in the direction of the sterile air flow and centered on the longitudinal axis X of the sheath 10.
- two diffusion cones 30 oriented in opposite directions, both directions sterile air flow out of the sterile air supply duct 20, and centered on the longitudinal axis X of the sheath 10.
- Each of the diffusion cones 30 has an angle at the apex ⁇ included between about 30 and 45 degrees, preferably equal to 45 degrees.
- Each diffusion cone 30 can be made of a flexible material perforated, preferably a textile material such as a polyester synthetic fabric or polypropylene.
- Each diffusion cone can also be made of rigid material perforated.
- each diffusion cone 30 may have a porosity equivalent to that of the porous wall 12 of the sheath 10, for example equal to about 0.5.
- diffusion cones advantageously ensure a distribution homogeneous sterile air inside the sheath 10 at the exit of the singularity, for avoid a local increase in air velocities causing a reduction in static pressure at the underside of the lower porous wall of the sheath 10, which can generate either an entry of external air into the sheath, or a trembling or fluttering of said lower porous wall of the sheath.
- each diffusion cone 30 is integral with the end, 41, 42 of a sleeve 40 positioned in the duct supply of sterile air 13 delimited by the sheath 10, along the longitudinal axis X of the sheath 10 and having a section slightly smaller than that of the sheath 10.
- the sleeve and the two cones form a single piece.
- the sleeve and the two cones form three pieces assembled.
- the sleeve 40 can be made of a less porous material than that diffusion cones 30. It can be made of flexible perforated material such as textile material or a rigid perforated material such as a perforated sheet.
- the assembly constituted by the sleeve 40 and the two diffusion cones 30, is mounted integral with the sheath 10 via a raised portion 43 of said sleeve extending along the Y axis and sealingly mounted at the end outer of the raised part 14 of the sealed wall 11 of the sheath 10.
- the diameter d1 of the sterile air supply duct 20 forming the central nozzle being of the order of 100 mm
- the sleeve 40 has a length of 130 mm
- each diffusion cone 30 has a length of 120 mm
- the sheath 10 having a diameter of 120 mm.
- the diffusion sheath made of flexible material has a bend as a singularity.
- a single diffusion cone will be provided inside the sheath. positioned at the outlet of the elbow centered on the longitudinal axis of the sheath and integral from one end of a diffusing sleeve, blind at the opposite end.
- the singularity of the sheath is for example a change in section of the diffusion sheath, a narrowing or a enlargement.
- Each sheath with a singularity will be equipped as has been described above of a sterile air diffusion cone positioned inside the sterile air supply duct delimited by the sheath.
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)
- Apparatus For Disinfection Or Sterilisation (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Outer Garments And Coats (AREA)
- Air Humidification (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Treatment Of Fiber Materials (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Packages (AREA)
Description
- ledit cône de diffusion est tronqué,
- ledit cône de diffusion présente un angle au sommet compris entre environ 30 et 45 degrés, de préférence égale à 45 degrés environ,
- ledit cône de diffusion est réalisé en un matériau souple perforé, de préférence un matériau textile. Ledit cône de diffusion est réalisé de préférence en tissu synthétique tel qu'un tissu polyester ou polypropylène,
- ledit cône de diffusion peut être réalisé en un matériau rigide perforé,
- le matériau constituant le cône de diffusion présente une porosité d'environ 0,5,
- ledit cône de diffusion est solidaire de l'extrémité d'un manchon positionné dans ledit conduit d'alimentation d'air stérile, selon l'axe longitudinal de la gaine et présentant une section légèrement inférieure à celle de la gaine,
- ledit manchon est réalisé en matériau moins poreux que celui dudit cône de diffusion,
- ledit manchon est réalisé en matériau souple perforé, tel qu'un matériau textile de sorte que sous l'action de l'air stérile le traversant il prend une forme ovoïdale en venant au contact de la face interne d'une paroi de la gaine,
- la gaine comporte un piquage central constitué par un conduit d'alimentation d'air stérile débouchant dans ladite gaine selon une direction sensiblement perpendiculaire Y à l'axe longitudinal X de la gaine de sorte qu'à la sortie dudit conduit d'alimentation d'air stérile, l'air stérile s'écoule selon deux sens opposés, généralement suivant l'axe longitudinal X de ladite gaine, cette dernière étant pourvu intérieurement à la sortie du piquage d'un manchon diffusant orienté selon l'axe longitudinal X de la gaine et comportant à chaque extrémité un cône de diffusion orienté dans le sens de l'écoulement de l'air stérile, et centré sur l'axe longitudinal de la gaine.
- la figure 1 est une schématique en perspective d'un mode de réalisation d'une gaine de protection selon l'invention,
- la figure 2 est une vue en coupe selon le plan A-A de la figure 1, et
- la figure 3 est une vue en coupe selon le plan B-B de la figure 1.
Claims (12)
- Gaine en matériau (10) souple pour la protection rapprochée de produits disposés sur un plan de travail, sensibles à la contamination véhiculée par l'ambiance, par diffusion d'une veine d'air stérile, notamment selon une direction sensiblement perpendiculaire audit plan de travail, ladite gaine (10) délimitant un conduit d'alimentation (13) d'air stérile et présentant une singularité géométrique (20), caractérisée en ce qu'il est prévu dans ledit oonduit d'alimentation (13), juste après ladite singularité (20) en considérant le sens de l'écoulement de l'air stérlle dans ledit conduit (13), un cône de diffusion (30) de l'air stérile orienté dans le sens de l'écoulement de l'air stérile et centré sur l'axe longitudinal X de la gaine (10).
- Gaine (10) selon la revendication 1, caractérisée en ce que ledit cône de diffusion (30) est tronqué.
- Gaine (10) selon la revendication 1, caractérisée en ce que ledit cône de diffusion (30) présente un angle au sommet (X) compris entre environ 30 et 45 degrés, de préférence égal à 45 degrés environ.
- Galne (10) selon l'une des revendications 1 à 3, caractérisée en ce que ledit cône de diffusion (30) est réalisé en un matériau souple perforé, de préférence un matériau textile.
- Gaine (10) selon la revendication 4, caractérisée en ce que ledit cône de diffusion (30) est réalisé en tissu synthétique tel qu'un tissu polyester ou polypropylène.
- Gaine (10) selon l'une des revendications 1 à 3, caractérisée en ce que ledit cône de diffusion (30) est réalisé en un matériau rigide perforé.
- Gaine (10) selon l'une des revendications 4 à 6, caractérisée en ce que le matériau constituant le cône de diffusion (30) présente une porosité d'environ 0,5.
- Gaine (10) selon l'une des revendications 1 à 7, caractérisée en ce que ledit cône de diffusion (30) est solidaire de l'extrémité d'un manchon (40) positionné dans ledit conduit d'alimentation d'air stérile (13), selon l'axe longitudinal X de la gaine et présentant une section légèrement inférieure à celle de la gaine (10).
- Gaine (10) selon la revendication 8, caractérisée en ce que le cône de diffusion est réalisé dans un matériau poreux et ledit manchon (40) est réalisé en matériau moins poreux que celui dudit cône de diffusion (30).
- Gaine (10) selon l'une des revendications 8 ou 9, caractérisée en ce que ledit manchon (40) est réalisé en matériau souple perforé, tel qu'un matériau textile de sorte que sous l'action de l'air stérile le traversant il prend une forme ovoïdale en venant au contact de la face interne d'une paroi (11) de la gaine (10).
- Gaine (10) selon l'une des revendications 8 à 10, caractérisé en ce qu'elle comporte un piquage central constitué par un conduit d'alimentation d'air stérile (20) débouchant dans ladite gaine (10) selon une direction sensiblement perpendiculaire Y à l'axe longitudinal de la gaine (10) de sorte qu'à la sortie dudit conduit d'alimentation d'air stérile (20), l'air stérile s'écoule selon deux sens opposés, généralement suivant l'axe longitudinal X de ladite gaine, cette dernière étant pourvue intérieurement à la sortie du piquage d'un manchon (40) diffusant orienté selon l'axe longitudinal X de la gaine (10) et comportant à chaque extrémité (41, 42) un cône de diffusion (30) orienté dans le sens de l'écoulement de l'air stérile, et centré sur l'axe longitudinal X de la gaine (10).
- Gaine en matériau souple pour la protection rapprochée de produits disposés sur un plan de travail, sensibles à la contamination véhiculée par l'ambiance, par diffusion d'une veine d'air stérile, notamment selon une direction sensiblement perpendiculaire audit plan de travail, ladite gaine délimitant un conduit d'alimentation d'air stérile et présentant une singularité géométrique, caractérisée en ce qu'il est prévu dans ledit conduit d'alimentation, juste après ladite singularité en considérant le sens de l'écoulement de l'air stérile dans ledit conduit, une hémisphère de diffusion de l'air stérile orientée dans le sens de l'écoulement de l'air stérile et centrée sur l'axe longitudinal X de la gaine.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9816014A FR2787558B1 (fr) | 1998-12-18 | 1998-12-18 | Dispositif de diffusion d'air sterile dans une gaine textile assurant la protection rapprochee de produits sensibles |
FR9816014 | 1998-12-18 | ||
PCT/FR1999/003164 WO2000037860A1 (fr) | 1998-12-18 | 1999-12-16 | Dispositif de diffusion d'air sterile dans une gaine textile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1141636A1 EP1141636A1 (fr) | 2001-10-10 |
EP1141636B1 true EP1141636B1 (fr) | 2002-09-11 |
Family
ID=9534140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99961093A Expired - Lifetime EP1141636B1 (fr) | 1998-12-18 | 1999-12-16 | Dispositif de diffusion d'air sterile dans une gaine textile |
Country Status (13)
Country | Link |
---|---|
EP (1) | EP1141636B1 (fr) |
JP (1) | JP4089158B2 (fr) |
CN (1) | CN1158488C (fr) |
AT (1) | ATE224033T1 (fr) |
AU (1) | AU753367B2 (fr) |
CA (1) | CA2355701A1 (fr) |
DE (1) | DE69902945T2 (fr) |
DK (1) | DK1141636T3 (fr) |
ES (1) | ES2181493T3 (fr) |
FR (1) | FR2787558B1 (fr) |
MX (1) | MXPA01006158A (fr) |
PT (1) | PT1141636E (fr) |
WO (1) | WO2000037860A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006018404B4 (de) * | 2006-04-20 | 2020-11-26 | Airbus Operations Gmbh | Lärmoptimierter Luftverteiler |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009034410B4 (de) * | 2009-07-23 | 2015-01-08 | Airbus Operations Gmbh | Eisabscheider für eine Luftleitung |
DK2573479T3 (en) * | 2011-08-30 | 2019-04-29 | Prihoda Sro | Duct element for air distribution |
CN104296244B (zh) * | 2014-10-10 | 2016-08-17 | 东南大学 | 一种壁挂式空调新风装置 |
FR3058349B1 (fr) * | 2016-11-10 | 2018-11-30 | Disposable-Lab | Dispositif de diffusion d'un fluide gazeux dans un isolateur pour la manipulation de produits sensibles tels que des medicaments, isolateur obtenu |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0694295A (ja) * | 1992-09-10 | 1994-04-05 | Taikisha Ltd | ダクト装置 |
JPH0640753U (ja) * | 1992-11-11 | 1994-05-31 | 新日本空調株式会社 | 空調用ダクト |
JPH07133953A (ja) * | 1993-11-11 | 1995-05-23 | Kenji Sakurai | 空調ダクト用t字管継手 |
DE4340038A1 (de) * | 1993-11-24 | 1995-06-01 | Schako Metallwarenfabrik | Quellauslaßsystem |
JPH07312985A (ja) * | 1994-05-25 | 1995-12-05 | Hitachi Air Conditioning & Refrig Co Ltd | 植物栽培室の局所空調装置 |
FR2748048B1 (fr) * | 1996-04-25 | 1998-07-31 | Air Strategie | Gaine textile pour la protection rapprochee du convoyage de produits sensibles et hotte a flux laminaire comportant une telle gaine |
JPH102841A (ja) * | 1996-06-14 | 1998-01-06 | Shojiro Kaji | 低周波空気振動低減装置 |
-
1998
- 1998-12-18 FR FR9816014A patent/FR2787558B1/fr not_active Expired - Fee Related
-
1999
- 1999-12-16 AU AU17827/00A patent/AU753367B2/en not_active Ceased
- 1999-12-16 AT AT99961093T patent/ATE224033T1/de not_active IP Right Cessation
- 1999-12-16 CA CA002355701A patent/CA2355701A1/fr not_active Abandoned
- 1999-12-16 JP JP2000589881A patent/JP4089158B2/ja not_active Expired - Fee Related
- 1999-12-16 DE DE69902945T patent/DE69902945T2/de not_active Expired - Fee Related
- 1999-12-16 MX MXPA01006158A patent/MXPA01006158A/es not_active IP Right Cessation
- 1999-12-16 CN CNB998146331A patent/CN1158488C/zh not_active Expired - Fee Related
- 1999-12-16 DK DK99961093T patent/DK1141636T3/da active
- 1999-12-16 WO PCT/FR1999/003164 patent/WO2000037860A1/fr active IP Right Grant
- 1999-12-16 PT PT99961093T patent/PT1141636E/pt unknown
- 1999-12-16 EP EP99961093A patent/EP1141636B1/fr not_active Expired - Lifetime
- 1999-12-16 ES ES99961093T patent/ES2181493T3/es not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006018404B4 (de) * | 2006-04-20 | 2020-11-26 | Airbus Operations Gmbh | Lärmoptimierter Luftverteiler |
Also Published As
Publication number | Publication date |
---|---|
MXPA01006158A (es) | 2002-09-18 |
WO2000037860A1 (fr) | 2000-06-29 |
DK1141636T3 (da) | 2003-01-20 |
CN1158488C (zh) | 2004-07-21 |
DE69902945T2 (de) | 2003-08-07 |
ATE224033T1 (de) | 2002-09-15 |
PT1141636E (pt) | 2003-01-31 |
JP4089158B2 (ja) | 2008-05-28 |
AU1782700A (en) | 2000-07-12 |
CN1330755A (zh) | 2002-01-09 |
FR2787558A1 (fr) | 2000-06-23 |
AU753367B2 (en) | 2002-10-17 |
EP1141636A1 (fr) | 2001-10-10 |
CA2355701A1 (fr) | 2000-06-29 |
DE69902945D1 (de) | 2002-10-17 |
JP2002533647A (ja) | 2002-10-08 |
ES2181493T3 (es) | 2003-02-16 |
FR2787558B1 (fr) | 2001-03-09 |
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