DE29702260U1 - Ventilation device for workplaces in systems with high air pollution, e.g. with air contaminated with germs in sorting plants - Google Patents
Ventilation device for workplaces in systems with high air pollution, e.g. with air contaminated with germs in sorting plantsInfo
- Publication number
- DE29702260U1 DE29702260U1 DE29702260U DE29702260U DE29702260U1 DE 29702260 U1 DE29702260 U1 DE 29702260U1 DE 29702260 U DE29702260 U DE 29702260U DE 29702260 U DE29702260 U DE 29702260U DE 29702260 U1 DE29702260 U1 DE 29702260U1
- Authority
- DE
- Germany
- Prior art keywords
- air
- area
- supply
- plants
- workplaces
- 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
- 238000009423 ventilation Methods 0.000 title claims description 15
- 238000003915 air pollution Methods 0.000 title claims description 4
- 244000052616 bacterial pathogen Species 0.000 title description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 claims description 9
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- 238000000605 extraction Methods 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 244000309464 bull Species 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 230000001332 colony forming effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Description
- Ingenieurgemeinschaft WSP -1 -- Engineering Association WSP -1 -
Ingenieurgemeinschaft WSPEngineering Association WSP
Welkenrather Straße 120Welkenrather Strasse 120
52074 Aachen52074 Aachen
Belüftungseinrichtung für Arbeitsplätze in Anlagen mit hoher Luftbelastung, z. B. bei keimbelasteter Luft in SortieranlagenVentilation system for workplaces in plants with high air pollution, e.g. germ-contaminated air in sorting plants
Arbeitsbereiche, in denen gesundheitsgefährdende Schadstoffe freigesetzt werden, werden häufig durch eine Kabine eingehaust. Für die Kabine ist eine Be- und Entlüftung vorzusehen, um an den innerhalb der Kabine befindlichen Arbeitsplätzen Atemluft mit der notwendigen Qualität sicherzustellen. Beispiele für derartige Arbeitsbereiche sind Lackierstraßen und Altstoffsortieranlagen. In Lackierstraßen werden unter Umständen toxische und/oder kanzerogene chemische Substanzen freigesetzt, in Sortieranlagen Keime, die iuftgetragen in den Atembereich gelangen können. Als wesentliche Forderung für die Auslegung üblicher Lüftungsanlagen ist ein Mindestluftwechsel von ca. dem zweifachen bis fünfzehnfachen Kabinenvolumen gefordert. Häufig erfolgt die Zuluft diffus oberhalb des Transportbandes mittels einer sogenannten Schlauchlüftung. Die Abluft verläßt den Kabinenbereich dabei über arbeitsablaufbedingte Öffnungen, z. B. die Ein- und Austrittsöffnung des Förderbandes und die Abwurfschächte bei Sortieranlagen. Mit derartigen Lüftungsanlagen ist jedoch in vielen Fällen die gewünschte Atemluftqualität nicht zu erzielen. So Siegen beispielsweise zahlreiche Messungen der Keimbelastung der Atemluft in Sortieranlagen vor. Diese zeigen eindeutig, daß die vom Länderausschuß für Arbeitsschutz und Sicherheitstechnik (LASI) geforderte maximale Keimbelastung von 104 koloniebildenden Einheiten (KBE) pro m3 Atemluft zum Teil ganz erheblich überschritten wird.Work areas in which harmful pollutants are released are often enclosed in a booth. The booth must be provided with ventilation to ensure that the necessary quality of breathing air is available at the workstations inside the booth. Examples of such work areas are paint shops and waste sorting plants. In paint shops, toxic and/or carcinogenic chemical substances may be released, and in sorting plants, germs that can enter the breathing area via air are released. A key requirement for the design of conventional ventilation systems is a minimum air change of approximately twice to fifteen times the booth volume. The supply air is often diffused above the conveyor belt using so-called hose ventilation. The exhaust air leaves the booth area via openings required by the workflow, e.g. the inlet and outlet openings of the conveyor belt and the discharge chutes in sorting plants. However, in many cases the desired breathing air quality cannot be achieved with such ventilation systems. For example, there are numerous measurements of the bacterial load in the air in sorting plants. These clearly show that the maximum bacterial load of 10 4 colony forming units (CFU) per m 3 of breathing air required by the State Committee for Occupational Safety and Security Technology (LASI) is sometimes significantly exceeded.
der Belüftungseinrichtung gemäß der Erfindung, siehe Figur 1, läßt sich die geforderte Atemluftqualität sicher einhalten. Die erfindungsgemäße Belüftungseinrichtung trennt durch den Zuluftschieier (7), der beidseitig des Transportbandes aus den Zuluftkanälen (1) die Luft nach unten leitet, den Emissionsbereich (8) von den eigentlichen Arbeitsbereichen ab. Um den Eintrag der emittierten Schadstoffe in den Atembereich durch turbulente Vermischung zu vermeiden, muß der Zuluftschleier (7)The ventilation device according to the invention, see Figure 1, allows the required breathing air quality to be reliably maintained. The ventilation device according to the invention separates the emission area (8) from the actual work areas by means of the supply air curtain (7), which directs the air downwards from the supply air ducts (1) on both sides of the conveyor belt. In order to prevent the emitted pollutants from entering the breathing area through turbulent mixing, the supply air curtain (7) must
• Ingenieurgemeinschaft WSP - 2 -• Engineering Association WSP - 2 -
breit genug sein mit einer bevorzugfervStrahibfeftezwischen 400 mm und 800 mm. Ferner muß durch geeignete Umlenkvorrichtungen (13) im Zuluftkanal (1) und Durchlässigkeiten der Strömungsführungen (5) - Gleichrichter, Lochbleche, etc. - ein Geschwindigkeitsprofil in der Strahlaustrittsebene erzeugt werden, welches ein Geschwindigkeitsmaximum und somit einen erhöhten Strömungsimpuls in der Absaugung abgewandten Seite des Strahls besitzen. Der Luftschleier (7) muß so gerichtet sein, daß ein Teil der zugeführten Luft über die Emissionsebene geleitet wird. Wegen der symmetrischen Strömungsführung führt dies im Mittenbereich der Emissionsebene zum Aufeinandertreffen der Teilströme (14). Dort wird die Strömung nach oben in Richtung der Absaugeöffnungen (4) umgelenkt. Die Abweiskörper (3), welche über die gesamte Länge der Lüftungsanlage verlaufen, führen zu einer Verbesserung der Abtrennung zwischen den nach oben strömenden schadstoffbelasteten Luftvolumen (15) und dem Luftschleier (7). Die Absaugeöffnungen (4) können in Form von Punktsenken oder in Form einer linienhaften Absaugung ausgeführt werden. : be wide enough with a preferred jet thickness of between 400 mm and 800 mm. Furthermore, suitable deflection devices (13) in the supply air duct (1) and permeability of the flow guides (5) - straighteners, perforated plates, etc. - must generate a speed profile in the jet exit plane which has a maximum speed and thus an increased flow impulse in the side of the jet facing away from the extraction. The air curtain (7) must be directed so that part of the supplied air is directed over the emission plane. Because of the symmetrical flow guidance, this leads to the partial flows (14) meeting in the middle area of the emission plane. There the flow is deflected upwards in the direction of the extraction openings (4). The deflectors (3), which run along the entire length of the ventilation system, improve the separation between the polluted air volumes (15) flowing upwards and the air curtain (7). The suction openings (4) can be designed in the form of point sinks or in the form of linear suction. :
Um ein Ansammeln von Schadstoffen im Raumbereich (9) zu vermeiden, muß auch dieser Bereich mit Frischluft gespült werden. Hierzu dienen die Austrittsöffnungen (6) im Lüftungskanal (1). Der durch die Absaugeöffnungen (4) und Abluftkanal (2) abgesaugte Volumenstrom ist geringfügig größer als der mittels des Strömungskanals (12) und des Zuluftkanals (1) der Kabine zugeführte Luftvolumenstrom. Hierdurch wird in der Kabine ein geringer Überdruck sichergestellt. Dieser Überdruck in Verbindung mit der aerodynamischen Abdichtung (10) verhindert, daß Schadstoffe von außerhalb der Kabine durch Öffnungen (11), z. B. Abwurfschacht, in den Kabineninnenraum gelangen können. Die aerodynamische Abdichtung (10) besteht aus einem Luftstrahl, der mittels eines Ventilators gefördert wird und näherungsweise senkrecht zur Abwurfschachtachse gerichtet ist. Dabei sollte die Strahlbreite - senkrecht zur Austrittsrichtung betrachtet - ca. 1/4 der Abwurfschachtbreite betragen.In order to prevent pollutants from accumulating in the room area (9), this area must also be flushed with fresh air. The outlet openings (6) in the ventilation duct (1) are used for this purpose. The volume flow extracted through the extraction openings (4) and exhaust air duct (2) is slightly larger than the volume flow of air supplied to the cabin via the flow duct (12) and the supply air duct (1). This ensures a slight overpressure in the cabin. This overpressure in conjunction with the aerodynamic seal (10) prevents pollutants from outside the cabin from entering the cabin interior through openings (11), e.g. the discharge chute. The aerodynamic seal (10) consists of an air jet that is conveyed by a fan and is directed approximately perpendicularly to the discharge chute axis. The jet width - viewed perpendicular to the exit direction - should be approximately 1/4 of the discharge chute width.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29702260U DE29702260U1 (en) | 1997-02-11 | 1997-02-11 | Ventilation device for workplaces in systems with high air pollution, e.g. with air contaminated with germs in sorting plants |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29702260U DE29702260U1 (en) | 1997-02-11 | 1997-02-11 | Ventilation device for workplaces in systems with high air pollution, e.g. with air contaminated with germs in sorting plants |
Publications (1)
Publication Number | Publication Date |
---|---|
DE29702260U1 true DE29702260U1 (en) | 1997-04-03 |
Family
ID=8035721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE29702260U Expired - Lifetime DE29702260U1 (en) | 1997-02-11 | 1997-02-11 | Ventilation device for workplaces in systems with high air pollution, e.g. with air contaminated with germs in sorting plants |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE29702260U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19911850A1 (en) * | 1999-03-17 | 2000-09-21 | Roehl Hager Hannelore | Method and device for isolating, detecting and extracting pollutants, in particular for extractor hoods |
EP1094280A2 (en) * | 1999-10-18 | 2001-04-25 | Altotech GmbH | Transportable device and method for lowering the concentration of pollutants in the air |
-
1997
- 1997-02-11 DE DE29702260U patent/DE29702260U1/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19911850A1 (en) * | 1999-03-17 | 2000-09-21 | Roehl Hager Hannelore | Method and device for isolating, detecting and extracting pollutants, in particular for extractor hoods |
DE19911850B4 (en) * | 1999-03-17 | 2010-04-08 | Röhl-Hager, Hannelore | Method and device for delimiting, detecting and extracting pollutants, in particular for extractor hoods |
EP1094280A2 (en) * | 1999-10-18 | 2001-04-25 | Altotech GmbH | Transportable device and method for lowering the concentration of pollutants in the air |
EP1094280A3 (en) * | 1999-10-18 | 2002-07-17 | Altotech GmbH | Transportable device and method for lowering the concentration of pollutants in the air |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1752212C3 (en) | System for coating objects by spraying | |
DE69701138T2 (en) | AIR CHANNEL WITH TEXTILE-LIKE STRUCTURE AND HOOD WITH LAMINARY FLOW | |
DE3522996A1 (en) | METHOD FOR DETERMINING STERILE SPACES AGAINST LEAKING TOXIC STERILIZING AGENTS OR INFLUENCE OF MICRO-ORGANISMS, PREFERRED TO APPLY FOR FILLING MACHINES, AND DEVICE FOR IMPLEMENTING THE METHOD | |
DE1457080A1 (en) | Device for cleaning gases, in particular exhaust gases from industrial plants | |
EP0532874A2 (en) | Air conditioner for the human domain | |
DE102017129479A1 (en) | Laser processing device for processing workpieces by means of a laser | |
EP0631849A1 (en) | Method and device for cleaning surfaces | |
DE3604422C2 (en) | ||
DE4344439A1 (en) | Method for guiding air in a receiving chamber and apparatus for working small parts | |
EP0878670A2 (en) | Working device, in particular safety workbench | |
DE29702260U1 (en) | Ventilation device for workplaces in systems with high air pollution, e.g. with air contaminated with germs in sorting plants | |
DE102020106011B4 (en) | Mobile extraction system | |
DE3632405A1 (en) | Filter for spray-painting and stoving booths | |
DE3743598C2 (en) | ||
EP4037840A1 (en) | Treatment system and treatment method | |
DE60202470T2 (en) | METHOD AND DEVICE FOR TRANSPORTING GAS | |
DE102019127751A1 (en) | Filter device and method for cleaning a filter element of a filter device | |
DE102020108584A1 (en) | Room air system with nebulizer | |
EP4144450B1 (en) | Method for cleaning exhaust air generated in a processing process in a clean room/dry room, and system for carrying out the method | |
DE202006003737U1 (en) | Assembly to deodorise effluent air from farm animal buildings by admixture of ionised free radicals | |
EP0687512A2 (en) | Safety laboratory hood cupboard | |
DE69622037T2 (en) | DEVICE FOR PROTECTION AGAINST CONTAMINATION | |
DE19858883C2 (en) | Method and device for dedusting rooms with high dust levels | |
DE102018003329B4 (en) | Absorbent basket and absorption basket system | |
DE102021111081A1 (en) | Air filtration device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 19970515 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20001211 |
|
R157 | Lapse of ip right after 6 years |
Effective date: 20030829 |