WO2000037860A1 - 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
- WO2000037860A1 WO2000037860A1 PCT/FR1999/003164 FR9903164W WO0037860A1 WO 2000037860 A1 WO2000037860 A1 WO 2000037860A1 FR 9903164 W FR9903164 W FR 9903164W WO 0037860 A1 WO0037860 A1 WO 0037860A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sheath
- sterile air
- diffusion
- longitudinal axis
- supply duct
- Prior art date
Links
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 the close protection of a work station or of a conveyor located in a contaminated atmosphere, and more particularly to a device for close protection of products sensitive to contamination by contaminating agents conveyed by the atmosphere. , said products being positioned on a work surface or a conveyor.
- sheath made of flexible material for close protection of products placed on a conveyor or a work surface, sensitive to contamination conveyed by the atmosphere, by diffusion of a sterile air stream, in particular according to a direction substantially perpendicular to said conveyor or work surface, said sheath defining a sterile air supply duct, having a geometric singularity.
- a sheath of this type is formed, in a manner known per se, of a tight wall and a porous wall of flexible perforated material, such as a textile material, extending longitudinally along the axis of the sheath.
- singularity is understood here to mean an elbow, a stitching or a change in section of the sheath for example.
- the vacuum zone thus created inside the sheath just after the singularity can cause an aspiration 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 at the place where the vacuum zone is thus created, and we observe at this place 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 uniformity of the sterile protective air flow is no longer ensured.
- the present invention proposes a new sheath made of flexible material for protection by sterile air diffusion, of the type defined previously in the introduction, which has an internal arrangement making it possible to refocus the speed profile of the sterile air. at the outlet of a singularity of said sheath so as to maintain the static pressure at this location at a sufficiently high level to avoid the creation of a vacuum zone.
- an air diffusion cone sterile oriented in the direction of sterile air flow and centered on the longitudinal axis X of the sheath.
- said diffusion cone has an angle at the apex of between approximately 30 and 45 degrees, preferably equal to approximately 45 degrees,
- Said diffusion cone is made of a flexible perforated material, preferably a textile material.
- Said diffusion cone is preferably made of synthetic fabric such as polyester or polypropylene fabric,
- said diffusion cone can be made of a rigid perforated material
- the material constituting the diffusion cone has a porosity of approximately 0.5, - said diffusion cone is integral with the end of a sleeve positioned in said sterile air supply duct, along the longitudinal axis of the sheath and having a section slightly smaller than that of the sheath,
- said sleeve is made of less porous material than that of said diffusion cone, - said sleeve is made of flexible perforated material, such as a textile material so that under the action of sterile air passing through it takes on a shape ovoid coming into contact with the internal face of a wall of the sheath,
- the sheath has a central tap formed by a sterile air supply duct opening into said sheath in a direction substantially perpendicular Y to the longitudinal axis X of the sheath so that at the outlet of said supply duct d sterile air, sterile air flows in two directions opposite, generally along the longitudinal axis X of said sheath, the latter being provided internally at the outlet of the nozzle with a diffusing sleeve oriented along the longitudinal axis X of the sheath and comprising at each end a diffusion cone oriented in the direction of flow of sterile air, centered on the longitudinal axis of the sheath.
- the invention also provides a sheath made of flexible material for 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 substantially perpendicular direction.
- said sheath delimiting 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 the air flow sterile in said duct, a hemisphere of diffusion of sterile air oriented in the direction of the flow of sterile air and centered on the longitudinal axis X of the sheath.
- FIG. 1 is a diagrammatic perspective view of an embodiment of a protective sheath according to the invention
- FIG. 2 is a sectional view along the plane A-A of FIG. 1, and
- FIG. 3 is a sectional view along the plane B-B of Figure 1.
- FIGS 1 to 3 there is shown a sheath 10 of flexible material for close protection of products arranged on a conveyor or a work surface (not shown), sensitive to contamination conveyed by the atmosphere, by diffusion of sterile air, in particular in a direction substantially perpendicular to said conveyor.
- sheath 10 will not be described here in detail, and reference is made to 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 has an upper wall 11 made of low porosity textile material or plastic film, forming the upper half-perimeter of the sheath 10, and a lower porous wall 12 forming the lower half-perimeter of the sheath 10.
- Said walls 11, 12 extend longitudinally along the longitudinal axis X 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 of mesh opening.
- 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 of mesh opening.
- the sheath 10 extends longitudinally parallel to the longitudinal edge of the conveyor or the work surface (not shown) over the entire length of the latter.
- each external longitudinal end situated at a longitudinal edge of the conveyor, of 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
- This arrangement makes it possible to ensure, along the porous wall 12, a median diffusion of sterile air at slow speed and on both sides, a lateral diffusion of 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 porous wall forms the lower part of the sheath.
- the porous wall feeds a longitudinal diffusion pocket located below the latter, the external wall of which comprises two lateral bands integral with the longitudinal ends of the sealed wall and a porous median zone bordered by two lateral slots adjacent to said sealed lateral bands.
- the sheath 10 here has a singularity.
- This singularity is constituted according to the embodiment shown, by a central tap which consists of a sterile air supply duct 20 extending along an axis Y perpendicular to the longitudinal axis X of the sheath and opening in this direction perpendicular in said sheath.
- the sterile air which flows in a vertical direction f flows in the sheath 10 in two opposite directions, generally along the longitudinal axis X of said sheath 10.
- an elbow or for example a narrowing or widening of the section of the sheath.
- the sterile air supply duct 20 is sealingly mounted in the sealed upper wall 11 of the sterile sheath.
- the upper wall 11 of the sheath 10 comprises a raised portion 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 line 20.
- the seal at the fitting is produced, 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 level of the internal face of the sealed upper wall 11 of said sheath 10.
- Each of the diffusion cones 30 has an apex angle ⁇ of between approximately 30 and 45 degrees, preferably equal to 45 degrees.
- Each diffusion cone 30 can be made of a flexible perforated material, preferably a textile material such as a polyester or polypropylene synthetic fabric.
- Each diffusion cone can also be made of rigid perforated material.
- 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 homogeneous distribution of the sterile air inside the sheath 10 at the outlet of the singularity, to avoid a local increase in air velocities causing a reduction in the static pressure at the level of 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 tremor or a flutter 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 sterile air supply duct 13 delimited by the sheath 10, according to 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 40 can be made of a less porous material than that of the diffusion cones 30. It can be made of flexible perforated material such as a textile material or of a rigid perforated material such as a perforated sheet. It advantageously has a diameter of about 10% less than that of the sheath 10.
- the assembly constituted by the sleeve 40 and the two diffusion cones 30, is mounted integral with the sheath 10 by means of a raised portion 43 of said sleeve extending along the Y axis and mounted in a leaktight manner.
- the diameter dl of the sterile air supply duct 20 forming the central tap being of the order of 100 mm
- 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 as its singularity an elbow.
- a single diffusion cone positioned at the outlet of the elbow centered on the longitudinal axis of the sheath and secured to one end of a diffusing sleeve, blind to the opposite end.
- the singularity of the sheath is for example a change of section of the diffusion sheath, a narrowing or an enlargement.
- a single diffusion cone oriented in the direction of the flow of sterile air and centered on the axis of the sheath.
- Each sheath comprising a singularity will be equipped, as described above, with 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)
- Air Humidification (AREA)
- Treatment Of Fiber Materials (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Packages (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Outer Garments And Coats (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69902945T DE69902945T2 (de) | 1998-12-18 | 1999-12-16 | Vorrichtung zur verteilung steriler luft in einem lufkanal mit textilartiger struktur |
EP99961093A EP1141636B1 (fr) | 1998-12-18 | 1999-12-16 | Dispositif de diffusion d'air sterile dans une gaine textile |
AT99961093T ATE224033T1 (de) | 1998-12-18 | 1999-12-16 | Vorrichtung zur verteilung steriler luft in einem lufkanal mit textilartiger struktur |
CA002355701A CA2355701A1 (fr) | 1998-12-18 | 1999-12-16 | Dispositif de diffusion d'air sterile dans une gaine textile |
JP2000589881A JP4089158B2 (ja) | 1998-12-18 | 1999-12-16 | 布シース内の滅菌空気を放散させる装置 |
DK99961093T DK1141636T3 (da) | 1998-12-18 | 1999-12-16 | Indretning til diffusion af steril luft i en tekstilkanal |
AU17827/00A AU753367B2 (en) | 1998-12-18 | 1999-12-16 | Device for diffusing sterilized air in a fabric sheath |
MXPA01006158A MXPA01006158A (es) | 1998-12-18 | 1999-12-16 | Dispositivo para difundir aire esterilizado en una cubierta de tela. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR98/16014 | 1998-12-18 | ||
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000037860A1 true WO2000037860A1 (fr) | 2000-06-29 |
Family
ID=9534140
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/003164 WO2000037860A1 (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) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006018404B4 (de) * | 2006-04-20 | 2020-11-26 | Airbus Operations Gmbh | Lärmoptimierter Luftverteiler |
DE102009034410B4 (de) * | 2009-07-23 | 2015-01-08 | Airbus Operations Gmbh | Eisabscheider für eine Luftleitung |
ES2720146T3 (es) * | 2011-08-30 | 2019-07-18 | Prihoda Sro | Elemento de conducto para distribución de aire |
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 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4340038A1 (de) * | 1993-11-24 | 1995-06-01 | Schako Metallwarenfabrik | Quellauslaßsystem |
WO1997040325A1 (fr) * | 1996-04-25 | 1997-10-30 | U.N.I.R. Ultra Propre Nutrition Industrie Recherche | Gaine textile de ventilation et hotte a flux laminaire |
JPH102841A (ja) * | 1996-06-14 | 1998-01-06 | Shojiro Kaji | 低周波空気振動低減装置 |
Family Cites Families (4)
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 |
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 |
-
1998
- 1998-12-18 FR FR9816014A patent/FR2787558B1/fr not_active Expired - Fee Related
-
1999
- 1999-12-16 MX MXPA01006158A patent/MXPA01006158A/es not_active IP Right Cessation
- 1999-12-16 PT PT99961093T patent/PT1141636E/pt unknown
- 1999-12-16 DK DK99961093T patent/DK1141636T3/da active
- 1999-12-16 AU AU17827/00A patent/AU753367B2/en not_active Ceased
- 1999-12-16 ES ES99961093T patent/ES2181493T3/es not_active Expired - Lifetime
- 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 CN CNB998146331A patent/CN1158488C/zh not_active Expired - Fee Related
- 1999-12-16 DE DE69902945T patent/DE69902945T2/de not_active Expired - Fee Related
- 1999-12-16 JP JP2000589881A patent/JP4089158B2/ja not_active Expired - Fee Related
- 1999-12-16 WO PCT/FR1999/003164 patent/WO2000037860A1/fr active IP Right Grant
- 1999-12-16 EP EP99961093A patent/EP1141636B1/fr not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4340038A1 (de) * | 1993-11-24 | 1995-06-01 | Schako Metallwarenfabrik | Quellauslaßsystem |
WO1997040325A1 (fr) * | 1996-04-25 | 1997-10-30 | U.N.I.R. Ultra Propre Nutrition Industrie Recherche | Gaine textile de ventilation et hotte a flux laminaire |
JPH102841A (ja) * | 1996-06-14 | 1998-01-06 | Shojiro Kaji | 低周波空気振動低減装置 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 098, no. 005 30 April 1998 (1998-04-30) * |
Also Published As
Publication number | Publication date |
---|---|
MXPA01006158A (es) | 2002-09-18 |
DE69902945D1 (de) | 2002-10-17 |
EP1141636A1 (fr) | 2001-10-10 |
CN1158488C (zh) | 2004-07-21 |
JP4089158B2 (ja) | 2008-05-28 |
PT1141636E (pt) | 2003-01-31 |
FR2787558A1 (fr) | 2000-06-23 |
AU1782700A (en) | 2000-07-12 |
DK1141636T3 (da) | 2003-01-20 |
JP2002533647A (ja) | 2002-10-08 |
EP1141636B1 (fr) | 2002-09-11 |
AU753367B2 (en) | 2002-10-17 |
CN1330755A (zh) | 2002-01-09 |
FR2787558B1 (fr) | 2001-03-09 |
CA2355701A1 (fr) | 2000-06-29 |
ES2181493T3 (es) | 2003-02-16 |
DE69902945T2 (de) | 2003-08-07 |
ATE224033T1 (de) | 2002-09-15 |
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