EP1094280A2 - Dispositif transportable et méthode pour réduire la concentration des polluants atmosphériques - Google Patents

Dispositif transportable et méthode pour réduire la concentration des polluants atmosphériques Download PDF

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Publication number
EP1094280A2
EP1094280A2 EP00114783A EP00114783A EP1094280A2 EP 1094280 A2 EP1094280 A2 EP 1094280A2 EP 00114783 A EP00114783 A EP 00114783A EP 00114783 A EP00114783 A EP 00114783A EP 1094280 A2 EP1094280 A2 EP 1094280A2
Authority
EP
European Patent Office
Prior art keywords
supply air
arrangement according
hose
air
opening
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.)
Withdrawn
Application number
EP00114783A
Other languages
German (de)
English (en)
Other versions
EP1094280A3 (fr
Inventor
Thorsten Olsen
Alexander Dr. Berg
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.)
Altotech GmbH
Original Assignee
Altotech GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Altotech GmbH filed Critical Altotech GmbH
Publication of EP1094280A2 publication Critical patent/EP1094280A2/fr
Publication of EP1094280A3 publication Critical patent/EP1094280A3/fr
Withdrawn legal-status Critical Current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
    • 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
    • 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

Definitions

  • the invention relates to an arrangement and a method for Reduction of the concentration of pollutants in the breathing air along an essentially extensive field of work with at least one arranged at the edge of the work area Exhaust vent.
  • the object of the present invention is the reduction the pollutant concentration caused by air flow generation when migrating and constantly changing construction sites, workplaces or improve facilities.
  • this is in the arrangement for a flat extensive working field caused by a mobile supply air source on the edge opposite the exhaust air opening the work area is arranged, the elongated and supply air opening provided with flow directing means along the Working area is essentially directed towards the exhaust air opening.
  • the work area can be, for example, a floor or an in a suspended ceiling. It can also act on parts of it regardless of the presence of Space limitations. This applies to floors as well as false ceilings, where the worker from below, e.g. B. on one Standing ladder through one in the false ceiling Removal of individual ceiling panels created opening works. Large rooms can also contain several work areas. Generally speaking, the field of work is essentially one areal area, in which the pollutant concentration for work performed therein should be lowered.
  • supply air flow generated according to the invention by the action of an injector that air from outside the field is included in the flow and this is reinforced.
  • the supply air source serves not only the generation of transport air for the pollutants, but above all the creation of a uniform flow direction within the work area.
  • the arrangement of the Supply air source on the opposite edge of the work area and their directionality essentially ensures the exhaust air opening making sure that the flow more or less the field of work completely covered.
  • the field of work can therefore also be used as be designated the area in which the invention Arrangement of supply and exhaust air opening in a predetermined Directed flow field generated.
  • the breathing position of the worker is in the air flow is expediently fundamentally from the supply air source worked towards the exhaust air opening so that due to the Processing resulting dusts away from the breathing position become.
  • the pollutant concentration along a 5 m and longer stretch Working area can be effectively reduced, while with pure Suction power after about 2 to 3 m due to The directionality of the suction flow has practically completely dropped is.
  • the invention is particularly advantageous for Use with false ceilings that are free of curtain walls extend several rooms because the work area is not through Walls is delimited and therefore interfering currents are expected must become.
  • the edge opposite the suction opening is determined by the position the supply air opening. It is not necessary, that the supply air flow is precisely aligned with the exhaust air opening is. An approximate orientation is sufficient, as far as the Flow none of its essentially uniform character forcing distracting redirection. This is especially true if the supply air source is composed of several supply air openings. It is also not necessary that the direction the supply air flow (seen in a vertical section) runs exactly parallel to the work area. It can also be used for Surface of the work area to be inclined to then parallel to be redirected. It is also not in all cases required that the air flow on the surface of the Work area, provided that it contains any pollutants Air that is between it and the surface of isolates the area to be protected. However, it should be avoided that the surface of the work area blown so dust is whirled up.
  • the generation of the uniform orientation of the flow can with a relatively low supply air flow.
  • the amount of supply air flow can be weaker be more pronounced than that of the exhaust air flow.
  • the injector effect of the supply air flow draws air from outside the work area lying areas. These areas can be in the same Horizontal level as the work area or also sufficient high rooms above this.
  • the supply air flow is therefore preferably less than 50%, more preferably even less than 20% of the exhaust air flow, if there are others Supply air sources are available, such as. B. at very extensive False ceiling spaces can be assumed. Either the generation of the supply air flow as well as the necessary Connection lines and the supply air source are therefore comparatively inexpensive and inexpensive.
  • the supply air source has means by which it is ensured will ensure that the desired flow direction is obtained.
  • she can, on the one hand, comprise holding means which provide orientation secure the supply air source relative to the work area, and on the other hand flow directing means at the openings from which the supply air flows out.
  • the holding means can be, for example around feet or anchors of the supply air source in the Act in the field of work.
  • the flow directing means can guide surfaces be provided at the supply air openings.
  • the elongated design of the supply air opening results in a flat expression of the air flow, so that a wide field of work is recorded. With the elongated supply air opening it can also be a series of individual openings. Since the supply air source is portable, and preferably without additional Equipment is portable by hand, it can be put on moving construction sites can be used easily.
  • a particularly advantageous and possibly worthy of independent protection Execution provides that the supply air duct through a hose pressurized (preferably foil hose) and the supply air opening through a series of openings are formed in the hose wall.
  • a hose is inexpensive compared to fixed installations.
  • the supply air openings can be generated easily, in the simplest In this case, there are slits in the hose wall.
  • Hoses can be used in many different work environments embarrassed and adapt to the spatial conditions flexible. With hoses even obstacles in the Ceiling space underneath such as cable routes, ventilation ducts, etc. or be overcome. When used in a
  • the supply air hose can cover the intermediate space if necessary Fill between the false ceiling and false ceiling, creating a complete or partial closure to neighboring, not processed areas is generated.
  • Hoses are still light transportable and can be used for storage or transportation be rolled up to save space, which is why they are used for migrating construction sites are particularly suitable.
  • a supply air hose which can be rolled up flat. He can be flat in that extensive field of work can be brought in by being rolled up in Form is placed at the end of the route on the it should be rolled out, and then pressurized becomes.
  • the supply air hose unrolls under the effect the pressure in the manner of a carnival pipe automatically in the intended position. This procedure is special when working on poorly accessible or high suspended ceilings practically, since the false ceiling only must be opened so far that the rolled-up supply air hose can be introduced, and thus a spacious Opening of the false ceiling can be avoided.
  • the material of the supply air hose is very flexible, it may be unable to counter the gravity to hold securely in the desired direction. It can therefore be useful to provide a profile on the supply air hose that runs in the direction of the hose jacket lines and the row the nozzle pipes supports.
  • This profile can, for example, from be made of inflatable tubing, which is in one piece like the foot profiles is connected to the supply air hose and together with this is inflated. Get a particularly secure alignment then when you put the row of nozzle pipes between arranges two inflation hoses, which in the inflated state clamp the nozzle pipes between them and align them.
  • a simple and inexpensive design provides that the exhaust air opening on the suction side and the supply air duct on the pressure side are connected to the same fan. That way a supply air flow in a completely or partially closed circuit are generated, which significantly reduces the amount of equipment.
  • a partially closed circuit part of the Exhaust air blown into the atmosphere through an exhaust air opening, while another part has one between the blower and the branch to the supply air duct provided for the exhaust air opening is directed.
  • the second of these two filters only affects the Work field supplied part of the extracted air flow, see above that the pressure drop corresponding to this filter only for one small part of the total air flow is caused and a major drop in performance is avoided.
  • the job to be processed is, for example around a boiler with an opening on the inside with cleaned as a result of dust formation.
  • the air curtain can be in a vertical plane in front of the boiler opening be arranged. If the job to be processed is part of a floor and from a standing person is processed, the air curtain is horizontal over the Floor led away, with at least part of this Air curtain is located below the person's breathing position. The work is not hindered in any way by the air curtain.
  • the arrangement "between the place and the breathing position" means the connecting line between the centers the supply and exhaust air opening and the connecting line between the area to be worked on and the breathing position cross.
  • the air curtain preferably has an extension, which corresponds at least approximately to the field of vision of the worker.
  • Figures 1 to 5 relate to an arrangement in which the extensive working area through a false ceiling is formed.
  • a room e.g. B. an office space
  • a false ceiling 3 is drawn in, for example individual ceiling panels 4 can exist.
  • the area of work is here through the top of the false ceiling 3 given.
  • an intermediate air opening 7 is arranged in the false ceiling 3, which is connected on the suction side to the blower 8.
  • the opening 7 is conveniently close in front of a continuous, too arranged the side ceiling 1A separating the false ceiling.
  • the Air sucked out by the blower 8 is passed through the filter 9 cleaned of pollutants and partly through the exhaust air opening 10 z. B. blown outdoors. If the side walls 1B, 1C and 1D extend beyond the false ceiling 3 extend, they form an advantageous side shield for the field of work. When they hit the space below the False ceiling 3 are limited so that the space between False ceiling 3 and ceiling 4 over the side walls mentioned spatially continues, it may be that one alone Comparison of suction flow caused by the exhaust air opening with any interference currents weak and possibly is not sufficient to work in a given area to generate a defined flow which is the minimization the concentration of pollutants guaranteed.
  • the exhaust air opening 7 is on the suction side and the supply air hose 11 on the pressure side to the same fan 8 connected. While much of the exhaust air from the exhaust opening 10 is fed, is between the blower 8 and the Outlet opening 10 is a branch 16 for part of the air flow set up for supply air hose 11.
  • the supply air hose is for installation in the false ceiling in a ventilated, flat position, it is rolled up by the generated by removing a single ceiling panel 17 Opening made in the false ceiling. After application of the supply air hose 11 with overpressure, it unrolls itself in the direction of the arrow (FIG. 3) into its intended position, which is indicated in Fig. 3 with a dashed line. When unrolling, any existing ceilings in the false ceiling are Obstacles 18 overcome. After full inflation of the supply air hose adapts to the spatial Conditions completely. It defines the edge of the work area on the side opposite the suction opening and closes it on this side against any interference in whole or in part.
  • the supply air hose 11 On the underside of the supply air hose 11 are two carrying it or supporting foot profiles 20 attached. You are preferred by cutting or welding the hose wall produced in one piece with the supply air hose along the longitudinal axis. To inflate the foot profiles 20 together with the The weldings run to enable the supply air hose 21 are not continuous, but rather show non-welded gaps 22 through which the compressed air passes can. The hose 11 resting on the profiles 20 ensures a stable cross-sectional orientation of the supply air hose and thus the supply air openings 12 relative to the false ceiling 3.
  • the openings 12 generated by arcuate slots 23; the resulting Hose wall tabs 24 are approximately parallel to the false ceiling 3 folded outwards and serve as flow straightening surfaces for the outgoing supply air.
  • the supply air openings 12 can be covered with a filter fleece strip 25 inside or outside be welded or sewn on, for example is so that the supply air before exiting the hose 11th is filtered.
  • the filter 25 is particularly for execution thought that some of the air discharged into the Work field is returned. Most of the differential pressure the air flow falls over the filter 9 and less over the filter 25, so that the blower output less can be measured.
  • Fig. 6 shows an embodiment with a floor 3 as a work area.
  • the hose 11 is, for example, along a Side wall 1B resting on the floor 3 and in any case preferably arranged without any significant vertical distance on it, while the blower 8 with the suction opening 7 on the opposite side wall 1A also on the floor is dormant.
  • the blower 8 with the suction opening 7 on the opposite side wall 1A also on the floor is dormant.
  • Air flow is detected due to the through the hose 11 and the hose openings 12 supply air flowing in Direction of the extension of the floor 40 directed preferential direction receives and is sucked in by the blower 8.
  • the Worker 14 works standing on the floor; his head area is located above the generated air curtain 6 and has one compared to the processed Establish a significantly reduced concentration of pollutants. The applies even if, for example, when removing one Flooring works bent.
  • Fig. 7 the method is explained, which the one of a Breath position 15 of a position 50 to be processed Worker 14 concerns.
  • the location 50 to be processed is Inner surface of a boiler 51 with an opening 52, through that is worked through.
  • the harmful dusts 5 occur out of the opening 52.
  • an air curtain 53 is between an inlet air opening 54 and an exhaust air opening 55. Both openings are elongated and run vertically to the line connecting the breathing position and the one to be processed Place 50, which creates a flat design of the air curtain 53 which causes the opening 52 of the boiler 51 completely covered. Therefore, the opening 52 emerging dusts 5 captured by the air curtain and aspirated through the exhaust opening 55.
  • the passage more harmful Dust particles from the opening 52 to the breathing position 15 of the Workers are thus prevented or reduced.
  • the purpose of the supplied through the supply air opening 54 Supply air flow among other things in the creation of a preferred direction the air sucked out through the exhaust opening 55 by injection, and particularly favors the flat Characterization of the air curtain.
  • the supply air opening is preferably 54 above and the exhaust air opening 55 below the opening 52 arranged so that the weight of the opening 52 emerging particles supportive in the direction of Suction works.
  • FIG. 8 shows a supply air hose 11 with two foot profiles 20, for a safe cross-sectional orientation compared to the Care floor 3.
  • the supply air openings are with nozzle pipes 57 provided, which are lined up along a generatrix. Your Alignment in relation to the radius of the supply air hose 11 is caused by the fact that it is between one of the foot profile tubes 20 and an adjacent profile tube 58, both of them to flatulence together connected to the supply air hose 11 and closely adjacent to each other are.
  • the jet effect of the supply air opening can lead to the accelerated air and the particles it contains the edge of the work area and the exhaust air opening located there shoot out. This can be undesirable, especially if the airflow at one behind the exhaust vent located wall and a flow roller in front of it forms. According to the invention, these disadvantages can thereby be prevented that the exhaust opening elongated along the field of work is trained. Particularly useful is a version in which the exhaust air opening from the distance between an elongated hood and the lower one Boundary surface of the working area is formed. Further is the arrangement of the exhaust air opening or the hood in front of a wall particularly effective because there are no significant redirections of the Air flow take place that can lead to pressure loss.
  • Figure 9 shows such an arrangement. It consists of one Blower 8, which is connected to a supply air hose via a hose 59 11 is connected to nozzles 57, which is essentially according to the Explanations to Figure 8 is formed, and a hood 61, which is expediently arranged on the blower 8.
  • the hood is made of foil material that is attached to tie rods 62 is arranged and its the working area or the supply air hose 11 facing, hanging surface 63 on the lower edge 64 through a lead, a tie rod or the like is fixed that between the bottom edge 64 and the bottom 65, the lower boundary surface of the work area forms, an elongated gap 60 is formed.
  • the rear one Surface 66 of the hood is also suitable complained at the bottom so that this more or less finally hangs up on the bottom surface 65 to a To form lock.
  • the inside of the hood is with the suction opening of the blower 8 connected.
  • the gap 60 forms on this Way the suction opening that elongated the working field limited.
  • the amount of fan air discharged through a bypass 10 is set so that the injection effect of the Nozzles 47 and thus the strength of the flowing in the work area Air flow is so large that the resulting amount of exhaust air by suction in gap 60 essentially completely can be managed. It is understood that at the a bypass nozzle 10 shown in FIG Line is connected.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Ventilation (AREA)
  • Cleaning In General (AREA)
EP00114783A 1999-10-18 2000-07-10 Dispositif transportable et méthode pour réduire la concentration des polluants atmosphériques Withdrawn EP1094280A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19950032A DE19950032A1 (de) 1999-10-18 1999-10-18 Anordnung bzw. Verfahren zur Verminderung der Konzentration von Luftschadstoffen
DE19950032 1999-10-18

Publications (2)

Publication Number Publication Date
EP1094280A2 true EP1094280A2 (fr) 2001-04-25
EP1094280A3 EP1094280A3 (fr) 2002-07-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00114783A Withdrawn EP1094280A3 (fr) 1999-10-18 2000-07-10 Dispositif transportable et méthode pour réduire la concentration des polluants atmosphériques

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EP (1) EP1094280A3 (fr)
DE (1) DE19950032A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1895242A1 (fr) * 2006-08-02 2008-03-05 Ewald Burkart Procédé et dispositif destinés à empêcher l'air chargé de sortir des pièces à l'aide d'un rideau d'air
WO2019185764A1 (fr) 2018-03-27 2019-10-03 Osmose Dispositif d'extraction d'air pour protéger les personnes des émissions de polluants
US20200256570A1 (en) * 2019-02-12 2020-08-13 Trinity Industrial Corporation Air curtain generating device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10325471A1 (de) * 2003-06-05 2004-12-30 Kähler, Jens Verfahren zur Absaugung von schadstoffbelasteter Luft aus einem Arbeitsfeld und Absaugeinrichtung zur Durchführung des Verfahrens, insbesondere für eine Zerkleinerungseinrichtung
DE102021203595A1 (de) 2021-04-12 2022-10-13 Adolf Würth Gmbh & Co Kg Staubschutzvorrichtung, Anordnung mit einer Staubschutzvorrichtung und Verfahren zum Betreiben einer Staubschutzvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR351493A (fr) * 1904-07-05 1905-07-18 Alfred Gutmann Actiengesellsch Procédé et installation pour évacuer la poussière pendant le décapage au jet de sable en local clos
US5125939A (en) * 1989-12-06 1992-06-30 Ab Ph. Nederman & Co. Filter container
DE29702260U1 (de) * 1997-02-11 1997-04-03 Gerhardt, Hans Joachim, Prof. M.Sc., 52072 Aachen Belüftungseinrichtung für Arbeitsplätze in Anlagen mit hoher Luftbelastung, z.B. bei keimbelasteter Luft in Sortieranlagen
EP0787952A2 (fr) * 1995-09-14 1997-08-06 Tornex Incorporated Système de purification de l'air

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR351493A (fr) * 1904-07-05 1905-07-18 Alfred Gutmann Actiengesellsch Procédé et installation pour évacuer la poussière pendant le décapage au jet de sable en local clos
US5125939A (en) * 1989-12-06 1992-06-30 Ab Ph. Nederman & Co. Filter container
EP0787952A2 (fr) * 1995-09-14 1997-08-06 Tornex Incorporated Système de purification de l'air
DE29702260U1 (de) * 1997-02-11 1997-04-03 Gerhardt, Hans Joachim, Prof. M.Sc., 52072 Aachen Belüftungseinrichtung für Arbeitsplätze in Anlagen mit hoher Luftbelastung, z.B. bei keimbelasteter Luft in Sortieranlagen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1895242A1 (fr) * 2006-08-02 2008-03-05 Ewald Burkart Procédé et dispositif destinés à empêcher l'air chargé de sortir des pièces à l'aide d'un rideau d'air
WO2019185764A1 (fr) 2018-03-27 2019-10-03 Osmose Dispositif d'extraction d'air pour protéger les personnes des émissions de polluants
FR3079601A1 (fr) * 2018-03-27 2019-10-04 Osmose Dispositif d'extraction d'air pour proteger les personnes des emissions de polluants
US20200256570A1 (en) * 2019-02-12 2020-08-13 Trinity Industrial Corporation Air curtain generating device
US11686486B2 (en) * 2019-02-12 2023-06-27 Trinity Industrial Corporation Air curtain generating device

Also Published As

Publication number Publication date
EP1094280A3 (fr) 2002-07-17
DE19950032A1 (de) 2001-04-26

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