EP0337469B2 - Clean room cupboard - Google Patents

Clean room cupboard Download PDF

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Publication number
EP0337469B2
EP0337469B2 EP89106646A EP89106646A EP0337469B2 EP 0337469 B2 EP0337469 B2 EP 0337469B2 EP 89106646 A EP89106646 A EP 89106646A EP 89106646 A EP89106646 A EP 89106646A EP 0337469 B2 EP0337469 B2 EP 0337469B2
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EP
European Patent Office
Prior art keywords
operating chamber
clean room
fan
fume cupboard
work space
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
Application number
EP89106646A
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German (de)
French (fr)
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EP0337469A3 (en
EP0337469A2 (en
EP0337469B1 (en
Inventor
Konrad Kreuzer
Edmund Gomm
Bruno Sigg
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Waldner Laboreinrichtungen GmbH and Co
Original Assignee
Waldner Laboreinrichtungen GmbH and Co
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Application filed by Waldner Laboreinrichtungen GmbH and Co filed Critical Waldner Laboreinrichtungen GmbH and Co
Priority to AT89106646T priority Critical patent/ATE98140T1/en
Publication of EP0337469A2 publication Critical patent/EP0337469A2/en
Publication of EP0337469A3 publication Critical patent/EP0337469A3/en
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Publication of EP0337469B1 publication Critical patent/EP0337469B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L1/00—Enclosures; Chambers
    • B01L1/04—Dust-free rooms or enclosures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B08B15/023—Fume cabinets or cupboards, e.g. for laboratories

Definitions

  • the invention relates to a clean room laboratory fume cupboard with a work space that is open on one side and a blower connected to it, according to the preamble of patent claim 1.
  • the object underlying the invention is to design the clean room laboratory fume hood according to the preamble of claim 1 compactly and with high variability in its application.
  • the suction of the internal air takes place not only via the hollow double rear wall of the work space from the rear part but also on both sides through the high double side walls of the work space, a compact design is possible, the clean room laboratory fume cupboard being able to be adapted to different applications at the same time and thus the desired variability in its application is given.
  • the fan thus generates a laminar air flow which directs air into the work space.
  • the blower sucks an air stream through the at least one nozzle from the part of the open side of the work space opposite the blower and from the rear, i.e. rear area of the part of the work space opposite the blower, these air currents going to the blower via the hollow double side walls and double back walls.
  • the fan divides all of the intake air into an airflow that escapes into the exhaust air opening and the airflow that goes into the work area.
  • the exemplary embodiment of the clean room fume hood according to the invention shown in FIGS. 1 to 3 has a blower, for example a fan 9, which generates an air flow which, through the main filter 1, blows clean air into the work space 12 (air flow II).
  • a blower for example a fan 9, which generates an air flow which, through the main filter 1, blows clean air into the work space 12 (air flow II).
  • air flow II air flow II
  • a further air flow I is sucked through the nozzle 8 into the fume cupboard, which on the part opposite the fan 9, i.e. in the present embodiment, the lower part of the work space is provided on the open side.
  • a part of the laminar air flow II is sucked off into the nozzle 8, the exhaust air being sucked up from the nozzle 8 via the two hollow double side walls of the working space 12 to the fan 9.
  • the remaining laminar flow from the work space 12 is drawn through the hollow double rear wall of the work space 12 to the fan.
  • the fan presses all of the extracted air into a pressure chamber 11.
  • the fan 9 is on the pressure side, i.e. via the pressure chamber 11, connected to an exhaust port 5 and to the working space 12.
  • the compressed air flow from the blower 9 is therefore divided into an air flow III to the exhaust port 5 and the laminar air flow II, which goes into the working space 12 via the main filter 1.
  • 25% of the air in the exhaust air connection 5 and 75% preferably go into the work space 12 as a laminar air flow II.
  • the clean room laboratory fume cupboard shown in the drawing is further provided with a lamp 2, a rectifier 3 and an exhaust air filter 4, via which the exhaust air goes to the exhaust port 5.
  • the main filter 1 can be folded down about a horizontal axis in the work space 12. This has the advantage that the main filter 1 and the exhaust air filter 4 can be easily changed without having to detach a separate plate in the front area.
  • the exhaust air filter 4 can be replaced from below, which is absolutely necessary, for example, in the case of a fume cupboard that is veneered to the ceiling.
  • a vertical sliding window 6 is provided on the clean room laboratory fume cupboard.
  • seals 13 are provided in the area of the work space 12 on the open side, as is shown schematically in FIG. 4.
  • the sliding window 6 is guided in the area of the open side of the working space 12 between these seals 13 and guideways 14, which have areas which are curved or protrude in the direction of the seals 13. Through this guide, the sliding window 6 is pressed firmly against the seals 13, which ensures the tight seal.
  • the clean room laboratory fume hood is provided with a seamless table top 7 made of stainless steel, which is preferably raised by about 50 mm on both sides and on the back.
  • the nozzle 8 In the front area of the table top 7, i.e. In the area of the open side of the working space 12 there is the nozzle 8, which can preferably be opened.
  • This rear wall suction 10 is located, for example, 50 mm above the table top 7. 2/3 of the air volume is sucked off via the nozzle 8 and guided upwards over the hollow double side walls. The nozzle 8 is raised in relation to the table top 7 and the trough underneath can be cleaned after opening the nozzle 8 without having to empty the fume cupboard.
  • the clean room fume cupboard according to the invention has the advantage that, due to the extraction via the exhaust air ducts on the left and right side and the rear side, there is a high degree of variability in use.
  • the clean room laboratory fume cupboard can therefore be easily adapted to the various applications.
  • the exhaust air duct is separated.
  • the rear exhaust slot 10 is connected to the exhaust port 5, so that the exhaust filter 4 is no longer required.
  • the exhaust air guided in the side walls is blown into the work space 12 with the aid of the fan 9.

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  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ventilation (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Adjustment And Processing Of Grains (AREA)

Abstract

Clean room laboratory extractor having a work space which is open at one side and a blower connected thereto which is connected on the overpressure side on the one hand to the work space (12) and on the other hand to an exhaust air opening (5) leading outwards, the blower (9) being connected on the underpressure side via hollow double side walls of the work space (12) to at least one nozzle (8) which is provided on the part of the open side of the work space (12) located opposite the blower (9), and being connected via a hollow double rear wall of the work space (12) to the rear part of the work space (12) located opposite the blower (9). <IMAGE>

Description

Die Erfindung betrifft einen Reinraumlaborabzug mit einem einseitig offenen Arbeitsraum und einem damit verbundenen Gebläse nach dem Gattungsbegriff des Patentanspruchs 1.The invention relates to a clean room laboratory fume cupboard with a work space that is open on one side and a blower connected to it, according to the preamble of patent claim 1.

Bei einem derartigen Reinraumlaborabzug, der aus der GB-A-1502885 bekannt ist, wird die Luft im Arbeitsraum über zwei gelochte Bleche unterhalb einer Einsatztischplatte angesaugt und über die hohle Doppelrückwand zur Unterdruckseite des Gebläses und vom Gebläse über einen Filter in den Arbeitsraum zurückgeführt. Ein Teil der Luft vom Arbeitsraum geht über einen separaten Abluftfilter nach außen.In such a clean room laboratory fume cupboard, which is known from GB-A-1502885, the air in the work space is sucked in via two perforated sheets underneath an insert table top and returned to the vacuum side of the blower via the hollow double rear wall and from the blower back into the work space via a filter. Part of the air from the work area goes out through a separate exhaust air filter.

Die der Erfindung zugrunde liegende Aufgabe besteht darin, den Reinraumlaborabzug nach dem Gattungsbegriff des Patentanspruchs 1 kompakt und mit hoher Variabilität in seiner Anwendung auszubilden.The object underlying the invention is to design the clean room laboratory fume hood according to the preamble of claim 1 compactly and with high variability in its application.

Diese Aufgabe wird gemäß der Erfindung durch die Ausbildung gelost, die im Kennzeichen des Patentanspruchs 1 angegeben ist.This object is achieved according to the invention by the training specified in the characterizing part of patent claim 1.

Da bei dem erfindungsgemäßen Reinraumlaborabzug die Absaugung der Innenluft nicht nur über die hohle Doppelrückwand des Arbeitsraumes vom hinteren Teil sondern auch auf beiden Seiten durch die hohen Doppelseitenwände des Arbeitsraumes erfolgt, ist eine kompakte Bauweise möglich, wobei der Reinraumlaborabzug gleichzeitig auf verschiedene Anwendungszwecke angepaßt werden kann und somit die gewünschte Variabilität in seiner Anwendung gegeben ist.Since with the clean room fume hood according to the invention the suction of the internal air takes place not only via the hollow double rear wall of the work space from the rear part but also on both sides through the high double side walls of the work space, a compact design is possible, the clean room laboratory fume cupboard being able to be adapted to different applications at the same time and thus the desired variability in its application is given.

Bei dem erfindungsgemäßen Reinraumlaborabzug erzeugt somit das Gebläse einen laminaren Luftstrom, der Luft in den Arbeitsraum leitet. Unterdruckseitig saugt das Gebläse einen Luftstrom durch die wenigstens eine Düse vom dem Gebläse gegenüberliegenden Teil der offenen Seite des Arbeitsraumes sowie vom hinteren, d.h. rückseitigen Bereich des dem Gebläse gegenüberliegenden Teils des Arbeitsraumes an, wobei diese Luftströme über die hohlen Doppelseitenwände und Doppelrückwände zum Gebläse gehen. Das Gebläse teilt überdruckseitig die gesamte angesaugte Luft in einen Luftstrom, der in die Abluftöffnung entweicht, und den Luftstrom auf, der in den Arbeitsraum geht.In the clean room laboratory fume cupboard according to the invention, the fan thus generates a laminar air flow which directs air into the work space. On the vacuum side, the blower sucks an air stream through the at least one nozzle from the part of the open side of the work space opposite the blower and from the rear, i.e. rear area of the part of the work space opposite the blower, these air currents going to the blower via the hollow double side walls and double back walls. On the overpressure side, the fan divides all of the intake air into an airflow that escapes into the exhaust air opening and the airflow that goes into the work area.

Besonders bevorzugte Ausgestaltungen und Weiterbildungen des erfindungsgemäßen Reinraumlaborabzuges sind Gegenstand der Patentansprüche 2 bis 8.Particularly preferred refinements and developments of the clean room laboratory fume cupboard according to the invention are the subject of claims 2 to 8.

Im folgenden wird anhand der zugehörigen Zeichnung ein besonders bevorzugtes Ausführungsbeispiel der Erfindung näher beschrieben. Es zeigen

  • Fig. 1 eine perspektivische Außenansicht des Ausführungsbeispiels des erfindungsgemäßen Reinraumlaborabzuges,
  • Fig. 2 eine teilweise geschnittene Seitenansicht des in Fig. 1 dargestellten Reinraumlaborabzuges,
  • Fig. 3 eine schematische Vorderansicht des in Fig. 1 dargestellten Reinraumlaborabzuges,
  • Fig. 4 eine schematische Ansicht des Bereiches des Arbeitsraumes mit der Dichtung für ein Schiebefenster und
  • Fig. 5 eine Schnittansicht der Schiebefensterführung.
A particularly preferred exemplary embodiment of the invention is described in more detail below with reference to the accompanying drawing. Show it
  • Fig. 1 is an external perspective view of the embodiment of the invention Fume cupboard,
  • 2 is a partially sectioned side view of the clean room fume hood shown in FIG. 1,
  • 3 shows a schematic front view of the clean room laboratory fume cupboard shown in FIG. 1,
  • Fig. 4 is a schematic view of the area of the work space with the seal for a sliding window and
  • Fig. 5 is a sectional view of the sliding window guide.

Das in den Figuren 1 bis 3 dargestellte Ausführungsbeispiel des erfindungsgemäßen Reinraumlaborabzuges weist ein Gebläse, beispielsweise einen Ventilator 9 auf, der einen Luftstrom erzeugt, der durch den Hauptfilter 1 gefiltert reine Luft in den Arbeitsraum 12 bläst (Luftstrom II). Zusätzlich wird durch den vom Ventilator 9 erzeugten Unterdruck ein weiterer Luftstrom I durch die Düse 8 in den Abzug gesaugt, die an dem dem Ventilator 9 gegenüberliegenden Teil, d.h. beim vorliegenden Ausführungsbeispiel dem unteren Teil des Arbeitsraumes, an der offenen Seite vorgesehen ist. Ein Teil des laminaren Luftstromes II wird in die Düse 8 abgesaugt, wobei die Abluft von der Düse 8 über die beiden hohlen Doppelseitenwände des Arbeitsraumes 12 nach oben zum Ventilator 9 gesaugt wird. Der restliche Laminarstrom vom Arbeitsraum 12 wird durch die hohle Doppelrückwand des Arbeitsraumes 12 zum Ventilator gesaugt.The exemplary embodiment of the clean room fume hood according to the invention shown in FIGS. 1 to 3 has a blower, for example a fan 9, which generates an air flow which, through the main filter 1, blows clean air into the work space 12 (air flow II). In addition, due to the negative pressure generated by the fan 9, a further air flow I is sucked through the nozzle 8 into the fume cupboard, which on the part opposite the fan 9, i.e. in the present embodiment, the lower part of the work space is provided on the open side. A part of the laminar air flow II is sucked off into the nozzle 8, the exhaust air being sucked up from the nozzle 8 via the two hollow double side walls of the working space 12 to the fan 9. The remaining laminar flow from the work space 12 is drawn through the hollow double rear wall of the work space 12 to the fan.

Der Ventilator preßt die gesamte abgesaugte Luft in einen Druckraum 11. Der Ventilator 9 ist überdruckseitig, d.h. über den Druckraum 11, mit einem Abluftstutzen 5 und mit dem Arbeitsraum 12 verbunden. Der Druckluftstrom vom Gebläse 9 wird daher in einen Luftstrom III zum Abluftstutzen 5 und in den laminaren Lufstrom II aufgeteilt, der über den Hauptfilter 1 in den Arbeitsraum 12 geht. Vorzugsweise gehen 25 % der Luft in den Abluftstutzen 5 und 75 % als laminarer Luftstrom II in den Arbeitsraum 12.The fan presses all of the extracted air into a pressure chamber 11. The fan 9 is on the pressure side, i.e. via the pressure chamber 11, connected to an exhaust port 5 and to the working space 12. The compressed air flow from the blower 9 is therefore divided into an air flow III to the exhaust port 5 and the laminar air flow II, which goes into the working space 12 via the main filter 1. 25% of the air in the exhaust air connection 5 and 75% preferably go into the work space 12 as a laminar air flow II.

Der in der Zeichnung dargestellte Reinraumlaborabzug ist weiterhin mit einer Lampe 2, einem Gleichrichter 3 sowie einem Abluftfilter 4 versehen, über den die Abluft zum Abluftstutzen 5 geht.The clean room laboratory fume cupboard shown in the drawing is further provided with a lamp 2, a rectifier 3 and an exhaust air filter 4, via which the exhaust air goes to the exhaust port 5.

Der Hauptfilter 1 kann im Arbeitsraum 12 um eine horizontale Achse nach unten geklappt werden. Das hat den Vorteil, daß der Hauptfilter 1 und der Abluftfilter 4 leicht gewechselt werden können, ohne daß eine separate Platte im Frontbereich gelöst werden muß. Der Abluftfilter 4 kann von unten gewechselt werden, was beispielsweise bei einem Laborabzug, der zur Decke verblendet ist, unbedingt notwendig ist.The main filter 1 can be folded down about a horizontal axis in the work space 12. This has the advantage that the main filter 1 and the exhaust air filter 4 can be easily changed without having to detach a separate plate in the front area. The exhaust air filter 4 can be replaced from below, which is absolutely necessary, for example, in the case of a fume cupboard that is veneered to the ceiling.

Wie es in Fig. 3 dargestellt ist, ist am Reinraumlaborabzug ein vertikales Schiebefenster 6 vorgesehen. Um Undichtigkeiten an den seitlichen Führungen und oberhalb des Schiebefensters zu vermeiden, durch die der Arbeitsraum 12 kontaminiert werden könnte, da von außen Teilchen durch den Unterdruck angesaugt werden können, sind im Bereich des Arbeitsraumes 12 an der offenen Seite Dichtungen 13 vorgesehen, wie es schematisch in Fig. 4 dargestellt ist. Wie es in Fig. 5 dargestellt ist, wird das Schiebefenster 6 im Bereich der offenen Seite des Arbeitsraumes 12 zwischen diesen Dichtungen 13 und Führungsbahnen 14 geführt, die Bereiche aufweisen, die in Richtung auf die Dichtungen 13 gekrümmt sind oder vorstehen. Durch diese Führung wird das Schiebefenster 6 fest gegen die Dichtungen 13 gepreßt, wodurch der dichte Abschluß gewährleistet ist.As shown in Fig. 3, a vertical sliding window 6 is provided on the clean room laboratory fume cupboard. To prevent leaks on the side guides and above the sliding window to avoid contaminating the work space 12, since particles can be sucked in from the outside by the negative pressure, seals 13 are provided in the area of the work space 12 on the open side, as is shown schematically in FIG. 4. As shown in FIG. 5, the sliding window 6 is guided in the area of the open side of the working space 12 between these seals 13 and guideways 14, which have areas which are curved or protrude in the direction of the seals 13. Through this guide, the sliding window 6 is pressed firmly against the seals 13, which ensures the tight seal.

Wie es weiterhin in Fig. 3 dargestellt ist, ist der Reinraumlaborabzug mit einer fugenlosen Tischplatte 7 aus Edelstahl versehen, die vorzugsweise auf beiden Seiten und auf der Rückseite um etwa 50 mm hochgezogen ist. Im vorderen Bereich der Tischplatte 7, d.h. im Bereich der offenen Seite des Arbeitsraumes 12 befindet sich die Düse 8, die vorzugsweise aufklappbar ist.As further shown in Fig. 3, the clean room laboratory fume hood is provided with a seamless table top 7 made of stainless steel, which is preferably raised by about 50 mm on both sides and on the back. In the front area of the table top 7, i.e. In the area of the open side of the working space 12 there is the nozzle 8, which can preferably be opened.

Durch die Rückwandabsaugung 10 wird etwa 1/3 der Abluftmenge nach oben geführt. Diese Rückwandabsaugung 10 befindet sich beispielsweise 50 mm über der Tischplatte 7. 2/3 der Luftmenge werden über die Düse 8 abgesaugt und über die hohlen Doppelseitenwände nach oben geführt. Die Düse 8 ist gegenüber der Tischplatte 7 erhaben und die darunterliegende Wanne kann nach Aufklappen der Düse 8 gereinigt werden, ohne den Laborabzug leerräumen zu müssen.Through the rear wall suction 10 about 1/3 of the amount of exhaust air is led upwards. This rear wall suction 10 is located, for example, 50 mm above the table top 7. 2/3 of the air volume is sucked off via the nozzle 8 and guided upwards over the hollow double side walls. The nozzle 8 is raised in relation to the table top 7 and the trough underneath can be cleaned after opening the nozzle 8 without having to empty the fume cupboard.

Der erfindungsgemäße Reinraumlaborabzug hat den Vorteil, daß aufgrund der Absaugung über die Abluftkanäle auf der linken und rechten Seite und der hinteren Seite eine hohe Variabilität in der Anwendung gegeben ist. Der Reinraumlaborabzug kann somit leicht auf die verschiedenen Anwendungszwecke angepaßt werden.The clean room fume cupboard according to the invention has the advantage that, due to the extraction via the exhaust air ducts on the left and right side and the rear side, there is a high degree of variability in use. The clean room laboratory fume cupboard can therefore be easily adapted to the various applications.

Im Normalfall wird beispielsweise mit etwa 70 bis 75 % Umluft und 25 bis 30 % Abluft über den Abluftfilter 4 gearbeitet.Normally, for example, about 70 to 75% of recirculated air and 25 to 30% of exhaust air are used via the exhaust air filter 4.

Wird in dem Abzug mit gasförmigen Stoffen gearbeitet, so erfolgt eine Trennung der Abluftführung. Der hintere Abluftschlitz 10 wird mit dem Abluftstutzen 5 verbunden, so daß der Abluftfilter 4 nicht mehr benötigt wird. Die in den Seitenwänden geführte Abluft wird mit Hilfe des Ventilators 9 in den Arbeitsraum 12 geblasen. Der Vorteil dieser Anordnung besteht dann darin, daß mit gasförmigen Stoffen gearbeitet werden kann, wobei 30 % der angesaugten Luft als Abluft nach außen gehen und 70 % als Umluft verwandt werden.If gaseous substances are used in the fume cupboard, the exhaust air duct is separated. The rear exhaust slot 10 is connected to the exhaust port 5, so that the exhaust filter 4 is no longer required. The exhaust air guided in the side walls is blown into the work space 12 with the aid of the fan 9. The advantage of this arrangement is that it can work with gaseous substances, with 30% of the air taken in as exhaust air and 70% used as recirculating air.

Wird im Abzug mit aggressiven Stoffen gearbeitet, so wird die gesamte vom Ventilator 9 angesaugte Luft an den Abluftstutzen 5 abgegeben. Die benötigten 70 % Zuluft werden uber die Decke zugeführt, wobei der Ventilator 9 dann durch eine Öffnung mit der Decke verbunden ist. Der Abluftfilter 4 entfällt gleichfalls. Dabei beträgt die Luftbilanz 70 % Zuluft und 100 % Abluft.If aggressive fumes are used in the fume cupboard, all of the air sucked in by the fan 9 is released to the exhaust air nozzle 5. The required 70% supply air is supplied via the ceiling, with the fan 9 then being fed through a Opening is connected to the ceiling. The exhaust air filter 4 is also omitted. The air balance is 70% supply air and 100% extract air.

Claims (7)

  1. Clean room fume cupboard comprising an operating chamber (12) which is open on one side and has a table plate (7), and comprising a fan (9) disposed above the operating chamber (12) and connected to the operating chamber (12), and connected on the excess pressure side on the one hand to the operating chamber (12), and on the other hand to a waste air aperture (5) leading to the exterior, and on the vacuum side via a hollow double rear wall of the operating chamber (12) to a rear part of the operating chamber (12) which is opposite the fan (9), and a port on the open side of the operating chamber (12) which is opposite the fan (9), characterised in that the vacuum side connection of the fan (9) to the part on the open side of the operating chamber (12) which is opposite the fan (9) is made via hollow double side walls of the operating chamber (12) which are connected to at least one nozzle (8) which is provided in the table plate (7), which is jointless, in the vicinity of the open side of the operating chamber (12).
  2. Clean room fume cupboard according to claim 1, characterized in that a filter (1) is arranged between the fan (9) and the operating chamber (12).
  3. Clean room fume cupboard according to claim 1 or 2, characterized in that a waste air filter (4) is provided in air flow direction before the waste air aperture (5).
  4. Clean room fume cupboard according to claim 2, characterized in that the filter (1) arranged between the fan (9) and the operating chamber (12) is pivotable around a horizontal axis.
  5. Clean room fume cupboard according to one of the preceding claims, characterized by a vertical sliding window (6) for closing the open side of the operating chamber (12).
  6. Clean room fume cupboard according to claim 5, characterized in that at the side edges and the top edge of the open side of the operating chamber (12) seals (13) are provided, and the sliding window (6) is guided between the seals (13) and guiding rails (14) provided with portions curved in direction of the seals (13) in the area of the open side of the operating chamber (12).
  7. Clean room fume cupboard according to claim 1, characterized in that nozzle (8) can be unfolded.
EP89106646A 1988-04-15 1989-04-13 Clean room cupboard Expired - Lifetime EP0337469B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89106646T ATE98140T1 (en) 1988-04-15 1989-04-13 CLEANROOM LABORATORY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8805028U 1988-04-15
DE8805028U DE8805028U1 (en) 1988-04-15 1988-04-15

Publications (4)

Publication Number Publication Date
EP0337469A2 EP0337469A2 (en) 1989-10-18
EP0337469A3 EP0337469A3 (en) 1991-03-27
EP0337469B1 EP0337469B1 (en) 1993-12-08
EP0337469B2 true EP0337469B2 (en) 1996-12-27

Family

ID=6823000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89106646A Expired - Lifetime EP0337469B2 (en) 1988-04-15 1989-04-13 Clean room cupboard

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EP (1) EP0337469B2 (en)
AT (1) ATE98140T1 (en)
DE (2) DE8805028U1 (en)

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DE10146000A1 (en) * 2001-09-18 2003-01-16 Waldner Laboreinrichtungen Fume cupboard for chemical laboratory uses additional air directed across its inner surfaces for preventing escape of fumes
ES2304844B1 (en) * 2006-04-24 2009-10-29 Telstar, S.A. PROTECTION DEVICE FOR AIR FLOW CABINS AND AIR FLOW CABIN INCLUDING SUCH DEVICE.
FR2996212B1 (en) * 2012-10-01 2014-10-10 Spcm Sa INSTALLATION FOR EMPTYING BAGS OF PULVERULENT PRODUCTS AND METHOD IMPLEMENTING THE INSTALLATION
DE102016107431A1 (en) * 2016-04-21 2017-10-26 Waldner Laboreinrichtungen Gmbh & Co. Kg off device
CN108213019A (en) * 2018-03-21 2018-06-29 苏州特福佳实验室系统工程有限公司 A kind of fountain environment protection ventilating cabinet

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Also Published As

Publication number Publication date
EP0337469A3 (en) 1991-03-27
DE58906332D1 (en) 1994-01-20
EP0337469A2 (en) 1989-10-18
ATE98140T1 (en) 1993-12-15
EP0337469B1 (en) 1993-12-08
DE8805028U1 (en) 1988-06-30

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