EP0807228B1 - Procede et dispositif de confinement, notamment d'une atmosphere particuliere dans un espace de traitement en continu de produits traversants - Google Patents
Procede et dispositif de confinement, notamment d'une atmosphere particuliere dans un espace de traitement en continu de produits traversants Download PDFInfo
- Publication number
- EP0807228B1 EP0807228B1 EP96902323A EP96902323A EP0807228B1 EP 0807228 B1 EP0807228 B1 EP 0807228B1 EP 96902323 A EP96902323 A EP 96902323A EP 96902323 A EP96902323 A EP 96902323A EP 0807228 B1 EP0807228 B1 EP 0807228B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jet
- atmosphere
- gas
- space
- confined
- 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
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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
- F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
- F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
- F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
- F24F3/163—Clean air work stations, i.e. selected areas within a space which filtered air is passed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F9/00—Use of air currents for screening, e.g. air curtains
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F9/00—Use of air currents for screening, e.g. air curtains
- F24F2009/007—Use of air currents for screening, e.g. air curtains using more than one jet or band in the air curtain
Definitions
- the subject of the present invention is a method and a device for confinement of an atmosphere in a space communicating with the outside through at least one opening; a gas curtain being generated at said level opening.
- Such gas curtains have a slow jet, the sting of which ensures the dynamic separation of atmospheres and a fast jet which stabilizes and stiffens said slow jet.
- suction mouth In contrast to the jet emission nozzles, there is generally a suction mouth which collects the blown gas as well as a fraction of the separate atmospheres which mix with said gas blown into the induction zone.
- the gases collected by such a suction mouth are generally treated before recycling or release to the environment.
- the materials and energy lost by the suction flow are considered necessary and / or negligible vis-à-vis of the desired result.
- the recovery of the double jet by a suction mouth is not however not systematic ...
- the fast jet and slow jet emission nozzles are supplied with unpolluted gas.
- the double jet gas curtain is an air curtain.
- the air injected in the form of slow and fast jets is recirculated or rejected after filtration of suspended particles entrained in the suction mouth.
- the invention therefore relates to a method for maintain a special atmosphere in a space communicating with the exterior thanks to at least one opening protected by a double gas curtain jet.
- Said atmosphere is special in that it differs from the atmosphere ambient by at least one element of differentiation which, for example, can consist of a particle concentration, a gas concentration, a temperature ...
- Said particular atmosphere or differentiated atmosphere is therefore confined in said space.
- said particular atmosphere is a clean atmosphere or a polluted atmosphere, compared to the atmosphere ambient.
- the slow jet of the gas curtain is arranged on the side of said atmosphere confined to avoid turbulent transfers due to passing through.
- the axial plane of the slow jet emission nozzle and that of the jet emission nozzle fast are parallel. Said nozzles can be arranged on any one sides of the opening.
- a gas curtain to double jet there is therefore a gas curtain to double jet, the slow jet of said curtain being located on the side of the particular atmosphere confined (point a) above) and, opposite the jet injection area, a device, including a suction mouth for the recovery of gas blown under shape of said jets and of a fraction of said confined atmosphere (point b) above). It is also generally used at said mouth of suction, a fraction of the ambient atmosphere. Said jets and mouth are arranged so as to maintain in the confined atmosphere characteristics constant or between precise values. Their particular provision allows, as will be explained below, to minimize material and / or energy losses by the recovery rate and by consequent to minimize the continuous contributions necessary for the maintenance of said special characteristics of the confined atmosphere.
- a fraction of the slow jet flow is sent into said atmosphere confined (point d) above). Said fraction is taken from the induction zone slow jet, confined space side of course. It is not directly taken back through the suction mouth. It penetrates into said confined atmosphere, generates there turbulence and is at least partly taken up by the slow jet for its induction.
- the slow jet induction flow is typically according to the invention taken partly from itself (confined space side). Space side confined, said slow jet self-stabilizes. In fact, part of it is "recycled", in the confined space for this purpose. As for the ambient atmosphere, we recall here that said slow jet is stabilized by the rapid jet.
- the containment process with double jet gas curtain is indeed implemented according to the invention under conditions such that an effect is observed regulating the extracted confined atmosphere flow, with maintenance of homogeneous conditions in said confined atmosphere.
- This regularization effect is particularly interesting when the gas curtain delimits a treatment in which a specific reagent must be kept in concentration sufficient in the atmosphere for the duration of the treatment.
- the curvature curtain caused by overpressure mainly due to injection into the confined space of a fraction of the slow jet flow
- the turbulence generated inside the treatment chamber (by the injection of a fraction of the slow jet flow within it) homogenizes the distribution of said reagent in the atmosphere of the chamber, reagent advantageously added continuously in said chamber to compensate for losses.
- the gas curtain is not frozen, stabilized in a fixed position.
- pressure variation which may be due to a variation in the supply flow to an adequate atmosphere and / or when a large object arrives in the confined space
- the jets move and a more or less significant fraction of the slow jet flow is sent in the confined atmosphere.
- the technology of the double gas curtain has been adapted. jet so as to minimize the loss of materials and / or energy from the confined atmosphere, through the suction mouth, while homogenizing the characteristics of said confined atmosphere.
- the curtain of gas will in this context be generated from the same atmosphere with at least one slow jet thermostatically controlled which will maintain the temperature in the confined space.
- the process of the invention makes it possible, in this context, to make circulate objects continuously, limiting energy losses and gradients of temperature at the inputs and outputs of said tunnels.
- Such a processing space includes a gas curtain at the entrance and a gas curtain at the exit; gas curtains generally planes successively crossed by the objects or products to be treated, transported by the conveyor system. If the spaces upstream and downstream of the space of treatment are at the same pressure, the two gas curtains work so symmetrical and the same effect of regulating the suction flow is obtained of confined atmosphere on said two curtains.
- the expected result is obtained with a plane of the gas curtain, inclined, with respect to the plane of the opening, towards the inside of confined space.
- Said plane of the gas curtain makes an angle with said plane of the opening, so that the end of the dart of the slow jet faces inward of confined space.
- Said angle of inclination of the median planes of the gas jets by ratio to the plane of the opening generally remains less than or equal to 30 °.
- This pressure increase (which generally remains around Pascal) is due to the transformation of the dynamic pressure of the recycled fraction of gas under static pressure. She is depending on the value of said angle of inclination and the shape of the mouth suction.
- the gas curtain (s) involved in the process the invention may (may) have various geometries.
- n can be curtains of gases generated by linear, polygonal or circular arc nozzles.
- the plan of gas curtain will describe, therefore, with possibly tilt mentioned above either a plan, or a portion of polyhedron, or a portion of frustoconical surface.
- the geometry of the gas curtain is obviously adapted to that of the opening to be covered or that of the confined space.
- the gas curtain formed by the two jets is generated from nozzles which can be located on a horizontal or vertical side the access opening to the confined space.
- At least one of the jets of said gas curtain is supplied with thermostated gas.
- the gases supplying said slow and fast jets can have the same characteristics (for example: nature of said gases, temperature thereof ...) or different characteristics.
- gas curtain or gas curtains
- gas curtain (s) return flow control usually consists of a double jet curtain of air.
- the air is replaced by any other suitable gas, in particular an inert gas in one or more two jets.
- gases injected of the same or different nature, may have characteristics different in particular of temperature, hygrometry, concentration in suspended liquid or solid particles.
- the invention relates to a device useful for the implementation of the method described above.
- Said device comprises the means classics necessary for the generation and operation of a gas curtain double jet at an opening.
- said means are arranged to ensure the expected effect described above, i.e. the injection of a fraction of the slow jet flow, for its self-induction, in the confined space.
- said gas suction mouth is positioned relative to said two nozzles so that and has a geometry such that a fraction of the slow jet flow is injected into said confined atmosphere and contributes to the induction flow rate of said slow jet; the importance of said fraction varying with the pressure within said confined space.
- the two nozzles are oriented so that the plane of the gas curtain is tilted, by relative to the plane of the opening, towards the interior of the confined space.
- the tilt angle as indicated above is between 0 and 30 °.
- the position and geometry of the suction mouth must allow normal operation of the gas curtain from start-up and creation a slight overpressure in the confined area.
- the gas suction mouth is arranged opposite, generally in line with the curtain's gas supply. She actually understands a gas receiving cavity which communicates with a discharge pipe from these. Said cavity is advantageously secured to at least one of the walls material which demarcate the opening.
- the receiving cavity gas is advantageously secured to the base, to the floor of the confined area.
- the nozzles are arranged in the upper part of the opening and said cavity is located below the level of the base of the area confined (floor of said area). It is advantageously delimited, on the side of the slow jet, by an edge with a concave curvilinear profile, connected to said base of the zone confined. Said edge does not present any edge likely to generate turbulence. Its profile is concave, so that it "accompanies" the deformation of the end of the stinger under the effect of overpressure.
- the position and geometry of said cavity must allow a normal operation of the gas curtain, in the absence of significant overpressure in the confined area.
- the end thinned dart of the slow jet arrives at the limit of the curvilinear edge of the cavity. Under the effect of a substantial overpressure, said end will deform and release the along said curvilinear edge a passage for the confined atmosphere (atmosphere, in diluted in gas taken from the slow jet).
- the confined space is delimited by a ceiling, a floor and at least two side walls.
- the injection nozzles of the gas curtain (s) are generally located at the level of the ceiling of the opening (openings), the (s) gas curtain (s) is (are) substantially vertical (vertical) and the intake opening is integrated into the floor.
- the gas receiving cavity associated with said suction mouth is located below the level of said floor and is delimited in width through the walls of the confined space.
- the confined space is bounded by a circular ceiling, a circular floor and a gas curtain cylindrical or frustoconical.
- the cavity of the suction mouth, opposite the circular gas injection nozzles constitutes a ditch around said base.
- the confined space is bounded by a polygonal ceiling, a polygonal floor and a gas curtain polyhedral.
- the cavity of the suction mouth, opposite the polygonal gas injection nozzles constitutes a ditch around said base.
- FIG. 1 The confinement according to said FIG. 1 is shown in section. the invention, from the atmosphere B of a chamber 4 for continuous treatment of a product P, by a reagent R injected through the tubing 8.
- Product P is transported by the conveying system 11.
- Chamber 4 is delimited by a horizontal ceiling, a horizontal floor, two vertical walls not shown and two curtains of vertical planes.
- the products P to be treated arrive from atmosphere A (ambient atmosphere, for example), successively cross the air curtain inlet and outlet air curtain and are found in said atmosphere A.
- Each of said air curtains has a slow jet 2, located on the side of the chamber 4, whose dart 3 is inclined towards the inside of said chamber 4 as well as a jet rapid 1, located on the outside (atmosphere A).
- the suction system of the gas blown in and a fraction of the confined atmosphere B is placed directly above the injection nozzles 9 and 10.
- Said suction system includes the cavity of reception of the gases 6 and the discharge conduit 7 of said aspirated gases.
- Said cavity 6 is delimited on the side of the slow jet 2 by an edge 5 with a concave curvilinear profile which joined the floor of bedroom 4.
- the gas receiving cavity 6 has a geometry and a positioning compared to nozzles 9 and 10 such as in stationary regime and in the absence of disturbance, the dart 3 of the slow jet 2 is in the equilibrium position, between the atmospheres A and B, shown in solid lines in Figure 1.
- the gas flow driven by the slow jet 9 in its cross section located at distance L from its origin is divided on the curvilinear edge 5 of the cavity 6 constituting the return mouth of the double throw 1 + 2.
- a chamber 4 for continuous sterilization of pharmaceutical products P is confined by means of two air curtains. Sterilization is obtained by contact of said products P with a sterilizing gas or nebulized liquid (H 2 O 2 ) at a temperature optimal. To reach and maintain said optimum temperature, two slow thermostatically controlled jets are used. The two air curtains prevent any leakage of H 2 O 2 to the adjacent areas (atmosphere A).
- a sterilizing gas or nebulized liquid H 2 O 2
- the inclination of the darts 3 of the slow jets 2 towards the interior of the chamber 4 allows training towards the sterilizing treatment zone (atmosphere B), at the entrance as at the outlet, the contaminating particles which accompany the P products.
- the depletion effect of sterilizing reagent in the vicinity of the passage exhaust limits losses in said reagent and maintains its concentration at level required for the duration of the treatment by optimizing its consumption.
- Said containment process is carried out under the conditions below.
- Room 4 is a 0.5 x 0.5 m section tunnel. An atmosphere of H 2 O 2 at 15 g / m 3 is maintained there.
- ns are injected through nozzles 9 with a length of 50 cm (length of the tunnel opening) and a width (slit) of 10 cm.
- the scope of the dart 3 of said slow jets 2 is 60 cm.
- the return flow corresponds the sum of the speed of the fast jet 1, the slow jet 2, the reagent supply sterilant (variable flow), and possibly from the ambient atmosphere (A) aspirated (variable flow).
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- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Food Preservation Except Freezing, Refrigeration, And Drying (AREA)
- Treatment Of Fiber Materials (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Container, Conveyance, Adherence, Positioning, Of Wafer (AREA)
- Vacuum Packaging (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Description
- le traitement ne peut s'effectuer que par lots successifs ;
- la quantité d'objets traités dépend du volume des sas ;
- le remplissage et le vidage successifs des sas entraínent une perte de matière et d'énergie, proportionnelle au volume desdits sas...
- un premier jet dit jet lent situé du côté de ladite atmosphère confinée ; ledit jet lent présentant un dard de portée (L) et d'envergure suffisantes pour couvrir ladite ouverture ;
- un second jet dit jet rapide, situé du côté de l'extérieur, de même sens que ledit jet lent, dont le plan axial est parallèle à celui dudit jet lent ; ledit jet rapide ayant un débit induit par sa face interne au contact du jet lent inférieur ou égal au débit dudit jet lent à une distance (L), égale à la portée dudit jet lent, de son injection ;
- pour homogénéiser ladite atmosphère confinée ;
- pour créer une certaine surpression en son sein ;
- pour régulariser la reprise dudit gaz injecté et de ladite atmosphère confinée.
- deux buses disposées côte à côte sur un côté de ladite ouverture et munies de moyens pour leur alimentation en gaz ; la longueur desdites buses étant au moins égale à la longueur de ladite ouverture, la largeur desdites buses étant déterminée en fonction de la vitesse des jets et de la portée du rideau à obtenir ; la buse située du côté de l'atmosphère confinée convenant pour l'émission du jet lent et l'autre pour l'émission du jet rapide ;
- une bouche d'aspiration d'au moins une partie du gaz insufflé sous forme de jets et d'une fraction de l'atmosphère confinée, ladite bouche d'aspiration étant reliée à un système d'aspiration et étant située au niveau de ladite ouverture, en vis-à-vis desdites deux buses ;
- avantageusement un système d'alimentation en atmosphère adéquate de l'espace confiné.
Vitesse initiale | vO = 0,5 m/s |
Débit | QO = 0,025 m3/s |
Vitesse initiale | vO = 8,17 m/s |
Vitesse à 0,5 m | v = 2 m/s |
Débit initial | QO = 0,020 m3/s |
Claims (10)
- Procédé de confinement d'une atmosphère (B) dans un espace (4) communiquant avec l'extérieur grâce à au moins une ouverture, procédé dans lequel un rideau de gaz (1+2) est généré au niveau de ladite ouverture ; procédé caractérisé en ce que :
ledit rideau de gaz (1+2) comporte :un premier jet dit jet lent (2) situé du côté de ladite atmosphère confinée (B) ; ledit jet lent (2) présentant un dard (3) de portée (L) et d'envergure suffisantes pour couvrir ladite ouverture ;un second jet dit jet rapide (1), situé du côté de l'extérieur, de même sens que ledit jet lent (2), dont le plan axial est parallèle à celui dudit jet lent (2) ; ledit jet rapide (1) ayant un débit induit par sa face interne au contact du jet lent (2) inférieur ou égal au débit dudit jet lent (2) à une distance (L), égale à la portée dudit jet lent (2), de son injection;au moins une partie du gaz insufflé sous forme desdits jets (1+2) ainsi qu'une fraction de l'atmosphère confinée (B) sont reprises, au niveau de ladite ouverture, en vis-à-vis de la zone d'injection desdits jets (1+2) ;une alimentation en atmosphère adéquate dudit espace (4) est avantageusement prévue, pour au moins compenser ladite fraction de l'atmosphère confinée (B) reprise ; etune fraction du débit du jet lent (2) est injectée dans ladite atmosphère confinée (B) et contribue au débit d'induction dudit jet lent (2) ; l'importance de ladite fraction variant avec la pression au sein dudit espace (4). - Procédé selon la revendication 1, caractérisé en ce que l'espace (4) est un espace de traitement en continu de produits (P) traversants, avantageusement intégré dans une ligne de convoyage (11).
- Procédé selon l'une des revendications 1 ou 2, caractérisé en ce que le plan du rideau de gaz (1+2) est incliné par rapport au plan de l'ouverture, vers l'intérieur de l'espace confiné (4).
- Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que ledit rideau de gaz (1+2) généré à partir d'un côté de l'ouverture est de forme plane.
- Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que ledit rideau de gaz (1+2) décrit une surface cylindrique, tronconique ou polyédrique.
- Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins un des jets (1, 2) dudit rideau de gaz (1+2) est alimenté en gaz thermostaté.
- Pédé selon l'une quelconque des revendications 1 à 6, caractérisé en ce que les gaz alimentant les jets lent et rapide présentent les mêmes caractéristiques ou des caractéristiques différentes.
- Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que ledit rideau de gaz (1+2) est un rideau d'air.
- Dispositif pour la mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il comprend :deux buses (9, 10), disposées côte à côte sur un côté de ladite ouverture et munies de moyens pour leur alimentation en gaz ; la longueur desdites buses (9, 10) étant au moins égale à la longueur de ladite ouverture, la largeur desdites buses (9, 10) étant déterminée en fonction de la vitesse des jets (1, 2) et de la portée du rideau (1+2) à obtenir ; la buse située du côté de l'atmosphère confinée (B) convenant pour l'émission du jet lent (2) et l'autre pour l'émission du jet rapide (1) ;une bouche d'aspiration (6) d'au moins une partie du gaz insufflé sous forme de jets (1+2) et d'une fraction de l'atmosphère confinée (B), ladite bouche d'aspiration (6) étant reliée à un système d'aspiration et étant située au niveau de ladite ouverture, en vis-à-vis desdites deux buses (9, 10) ;avantageusement, un système d'alimentation en atmosphère adéquate de l'espace (4);
- Dispositif selon la revendication 9, caractérisé en ce que lesdites deux buses (9, 10) sont orientées de sorte que le plan du rideau de gaz (1+2) est incliné par rapport au plan de l'ouverture, vers l'intérieur de l'espace confiné (4).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9501211A FR2730297B1 (fr) | 1995-02-02 | 1995-02-02 | Procede et dispositif de confinement, notamment d'une atmosphere particuliere dans un espace de traitement en continu de produits traversants |
FR9501211 | 1995-02-02 | ||
PCT/FR1996/000170 WO1996024011A1 (fr) | 1995-02-02 | 1996-02-01 | Procede et dispositif de confinement, notamment d'une atmosphere particuliere dans un espace de traitement en continu de produits traversants |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0807228A1 EP0807228A1 (fr) | 1997-11-19 |
EP0807228B1 true EP0807228B1 (fr) | 1998-11-04 |
Family
ID=9475773
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96902323A Expired - Lifetime EP0807228B1 (fr) | 1995-02-02 | 1996-02-01 | Procede et dispositif de confinement, notamment d'une atmosphere particuliere dans un espace de traitement en continu de produits traversants |
Country Status (8)
Country | Link |
---|---|
US (1) | US5934992A (fr) |
EP (1) | EP0807228B1 (fr) |
AT (1) | ATE173078T1 (fr) |
AU (1) | AU4667896A (fr) |
DE (1) | DE69600921T2 (fr) |
DK (1) | DK0807228T3 (fr) |
FR (1) | FR2730297B1 (fr) |
WO (1) | WO1996024011A1 (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2756910B1 (fr) * | 1996-12-10 | 1999-01-08 | Commissariat Energie Atomique | Procede de separation dynamique de deux zones par un rideau d'air propre |
FR2757933B1 (fr) * | 1996-12-27 | 1999-01-22 | Commissariat Energie Atomique | Dispositif de separation dynamique de deux zones par au moins une zone tampon et deux rideaux d'air propre |
FR2760199B1 (fr) * | 1997-03-03 | 1999-05-21 | Unir Ultra Propre Nutrition In | Dispositif de separation de deux zones a ambiances differentes |
FR2770330B1 (fr) * | 1997-10-24 | 2000-01-14 | Cogema | Procede et dispositif de confinement par stratification thermique |
US6390755B1 (en) * | 2000-04-06 | 2002-05-21 | Motorola, Inc. | Exhaust device for use in a clean room, cleanroom, and method |
CN1193193C (zh) * | 2000-12-21 | 2005-03-16 | 松下电器产业株式会社 | 净化室及半导体装置的制造方法 |
DE10244463B4 (de) * | 2002-09-24 | 2004-11-18 | Siemens Ag | Verfahren zum Abrechnen einer kostenpflichtigen Nutzung von durch einen Dienstanbieter angebotenen Diensten |
FI20065541L (fi) * | 2006-09-01 | 2008-03-02 | Sah Ko Oy | Menetelmä lämmön siirtymisen rajoittamiseksi seinässä olevan aukon läpi ja ilma verho |
BRPI1011893A2 (pt) * | 2009-07-03 | 2016-04-12 | Tetra Laval Holdings & Finance | método para manter uma barreira de fluxo de gás entre dois volumes de um canal em uma máquina de enchimento, e, dispositivo para manutenção de uma barreira de fluxo de gás entre dois volumes de um canal em uma máquina de enchimento |
ITPI20110138A1 (it) * | 2011-12-06 | 2013-06-07 | A R I A Engineering S R L | Metodo e apparecchiatura per realizzare ambienti delimitati da pareti dâ''aria |
FR3032391B1 (fr) * | 2015-02-06 | 2018-09-21 | Alstom Transport Technologies | Dispositif de generation de rideau d'air, notamment destine a equiper un vehicule ferroviaire |
CN106288126A (zh) * | 2016-10-26 | 2017-01-04 | 广东绿岛风室内空气系统科技有限公司 | 一种双出风口风幕机 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2530163B1 (fr) * | 1982-07-15 | 1986-08-29 | Commissariat Energie Atomique | Procede de confinement de la pollution d'un local a l'aide d'une veine gazeuse |
FR2652520B1 (fr) * | 1989-10-02 | 1992-02-07 | Sgn Soc Gen Tech Nouvelle | Procede et dispositif pour maintenir une atmosphere propre a temperature regulee sur un poste de travail. |
FR2659782B1 (fr) * | 1990-03-14 | 1992-06-12 | Sgn Soc Gen Tech Nouvelle | Procede et dispositif de separation dynamique de deux zones. |
US5195888A (en) * | 1991-08-19 | 1993-03-23 | Praxair Technology, Inc. | Multi-layer fluid curtains for furnace openings |
GB2268975B (en) * | 1992-07-14 | 1996-04-24 | Northampton Refrigeration Comp | Fan assembly for refrigerated display case |
-
1995
- 1995-02-02 FR FR9501211A patent/FR2730297B1/fr not_active Expired - Lifetime
-
1996
- 1996-02-01 EP EP96902323A patent/EP0807228B1/fr not_active Expired - Lifetime
- 1996-02-01 DK DK96902323T patent/DK0807228T3/da active
- 1996-02-01 AU AU46678/96A patent/AU4667896A/en not_active Abandoned
- 1996-02-01 AT AT96902323T patent/ATE173078T1/de active
- 1996-02-01 WO PCT/FR1996/000170 patent/WO1996024011A1/fr active IP Right Grant
- 1996-02-01 DE DE69600921T patent/DE69600921T2/de not_active Expired - Fee Related
- 1996-02-01 US US08/875,684 patent/US5934992A/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DK0807228T3 (da) | 1999-07-19 |
ATE173078T1 (de) | 1998-11-15 |
US5934992A (en) | 1999-08-10 |
WO1996024011A1 (fr) | 1996-08-08 |
AU4667896A (en) | 1996-08-21 |
FR2730297A1 (fr) | 1996-08-09 |
DE69600921D1 (de) | 1998-12-10 |
FR2730297B1 (fr) | 1997-05-09 |
DE69600921T2 (de) | 1999-05-27 |
EP0807228A1 (fr) | 1997-11-19 |
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