EP2251105B1 - Extractor with frontal window guide - Google Patents

Extractor with frontal window guide Download PDF

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Publication number
EP2251105B1
EP2251105B1 EP10162583.8A EP10162583A EP2251105B1 EP 2251105 B1 EP2251105 B1 EP 2251105B1 EP 10162583 A EP10162583 A EP 10162583A EP 2251105 B1 EP2251105 B1 EP 2251105B1
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EP
European Patent Office
Prior art keywords
nozzles
guide
fume hood
guiding means
hood according
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.)
Not-in-force
Application number
EP10162583.8A
Other languages
German (de)
French (fr)
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EP2251105A3 (en
EP2251105A2 (en
Inventor
Frank Wesemann
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.)
Wesemann GmbH
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Wesemann GmbH
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Filing date
Publication date
Application filed by Wesemann GmbH filed Critical Wesemann GmbH
Priority to PL10162583T priority Critical patent/PL2251105T3/en
Publication of EP2251105A2 publication Critical patent/EP2251105A2/en
Publication of EP2251105A3 publication Critical patent/EP2251105A3/en
Application granted granted Critical
Publication of EP2251105B1 publication Critical patent/EP2251105B1/en
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Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • 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 a trigger with a discharge chamber, the side walls, a closable by means of a closing element actuating opening and guide means having a guide for the closing element.
  • a trigger of the aforementioned type is known in which the guide means comprises a channel, wherein the channel has openings to direct air into an additional Heilleitprofil, which in turn has a perforated plate for the escape of air.
  • the problem underlying the invention is to provide a trigger with which an immediate removal as possible from the area of the actuating opening results, with a load in the area of the actuating opening should be possible to avoid out of the interior of the trigger out as possible.
  • the guide means comprises at least a first integrated in the guide means channel for supplying the leadership of adjacent nozzles with air, wherein the nozzles facing an interior of the trigger and disposed adjacent to the first channel are.
  • the nozzles with which accompanying the suction of pollutants into the interior of the trigger is possible in such a way that air in the region of the actuation opening on the one hand accelerated into the interior of the trigger and on the other hand is diluted, can be easily and effectively supplied with air.
  • These nozzles can be arranged by integrating the channel in the guide means for the closing element together with this particularly far forward, so that a good dilution effect and transport effect of pollutants is achieved inside the trigger.
  • a development of the invention is characterized in that the guide means has a second channel for supplying the actuating opening of adjacent further nozzles with air.
  • the nozzles can be used to generate wall beams assigned to the side walls and the further nozzles can be used to generate floor beams assigned to a floor.
  • the air in the entire edge region of the actuating opening can effectively dilute by means of the nozzles and blow into the interior of the trigger. The suction effect of the trigger is effectively supported in this way.
  • the nozzles and / or the further nozzles are elongated and / or that a plurality of nozzles and / or further nozzles are arranged surrounding the actuating opening.
  • the entire actuating opening can be effectively surrounded with the nozzles or the elongated nozzles, so that an effective barrier for the backflow of gas located in the trigger arises in the entire edge region of the actuating opening.
  • the guide means has a transverse channel adjacent to the floor. Such a transverse channel can serve to receive the other nozzles and at the same time be designed like a spoiler. Thus, due to the spoiler-like profile, the inflow of air is hindered as little as possible by this transverse channel.
  • the additional nozzles supplied by means of the second channel can be arranged as far forward as possible.
  • the closing element is formed in two parts and the guide means has a first guide for the first part and a second guide for the second part.
  • the guide means has a first guide for the first part and a second guide for the second part.
  • Another embodiment of the invention is characterized by a connection for the guide means for supplying the first channel and / or the second channel with air.
  • the guide means can be made modular and can be easily arranged in or in front of the actuation opening of the trigger.
  • a source for an air flow for example a fan, can be arranged at any location of the trigger. By connecting an outlet of this fan to the port, the trigger is ready for use.
  • the guide means is arranged at the front edge of the side walls.
  • a particularly good effect can be achieved.
  • the mode of action of the trigger with the features of the invention can be further enhanced by virtue of the fact that the guide means is arranged projecting the column walls on the front side.
  • Fig. 1 shows a schematic representation of a trigger 10 with the features of the invention in a perspective view.
  • the trigger 10 has side walls 11, 12, an upper cover 13 and a bottom 14, which together form an inner space 15.
  • the interior 15 is accessible through an actuating opening 16, which is closable by means of a closing element 17.
  • the closing element is a vertical slide 17.
  • the slider 17 is guided in guide rails 18, 19, which are adjacent to the side walls 11, 12 and these are respectively arranged projecting forward. To move the slider 17 is guided vertically displaceable in guide grooves, which extend in each case in the guide rails 18, 19 from top to bottom, as explained in more detail below.
  • Fig. 2 shows the guide rails 18, 19 in a detached from the trigger 10 state.
  • the guide rails 18, 19 each have two guide grooves 20, 21, of which only the guide grooves 20, 21 of the guide rail 19 can be seen in the figure.
  • the guide grooves 20, 21 serve to receive and guide the slider 17.
  • a part of the slider 17 in the groove 20 and another part of the slider 17 in the groove 21 respectively be guided. In this way, the height of the trigger 10 required for completely closing the actuating opening 16 with the slide 17 can be reduced.
  • a transverse profile 22 is arranged in the lower region between the guide rails 18, 19, which connects the guide rails 18, 19 to one another there.
  • connection 23 for connection to a fluid line of the trigger 10 is arranged.
  • 22 channels are arranged in the interior of the guide rails 18, 19 and the transverse profile, which will be discussed in more detail below.
  • These channels can be connected to the connection 23 with a fan of the trigger 10, so that here a fluid, in particular air can be promoted through the channels to not visible in the figure nozzles. The air may then exit through the nozzles and stroke along the sidewalls or floor to the interior 15, as indicated by arrows in the figure.
  • Fig. 3 shows a detailed view of the right lower end of the actuating opening.
  • the guide groove 20 is arranged at the front end of the guide rail 18.
  • the slider 17 can be arranged very far forward in the region of the side walls 11, 12 or even before them.
  • the transverse profile 22 has a rounded spoiler profile 24 on its side which flows in from the outside. This spoiler 24 serves to guide the incoming air laminar into the interior 15 and to prevent turbulence as possible.
  • Fig. 4 shows a cross section of the guide rail 19.
  • the guide rail 18 corresponds substantially to the guide rail 19, however, is constructed in mirror image.
  • two channels 25, 26 are formed in the interior of the guide rail 19.
  • the figure can also be seen that facing the interior and adjacent to the channel 26, a nozzle 27 is located in the guide rail 19.
  • the nozzle 27 is in fluid communication with the channel 26 and is supplied by the port 23 through the channel 26 with supply air.
  • the channel 25 is in fluid communication with the port 23 of the guide rail 19 or another port 23 in the area the guide rail 18.
  • the channel 25 serves for fluid guidance to the arranged in the interior of the transverse profile 22 channel which supplies additional nozzles with fluid.
  • Fig. 5 shows a partial view of a rear view of the guide rail 19.
  • nozzles 27 which are arranged spaced apart in the vertical direction in the guide rail 19.

Description

Die Erfindung betrifft einen Abzug mit einer Abzugskammer, die Seitenwände, eine mittels eines Verschließelementes verschließbare Betätigungsöffnung und Führungsmittel mit einer Führung für das Verschließelement hat.The invention relates to a trigger with a discharge chamber, the side walls, a closable by means of a closing element actuating opening and guide means having a guide for the closing element.

Ein derartiger Abzug ist aus der GB 1 002 297 A bekannt, wobei entweder ein separates Kanalsystem zum Versorgen von Austrittsschlitzen mit Luft oder ein Spalt sowohl als Führung für das Verschließelement als auch eine Öffnung zum Ausbringen von Luft vorgesehen ist.Such a deduction is from the GB 1 002 297 A known, either a separate channel system for supplying air outlet slots or a gap is provided both as a guide for the closing element and an opening for discharging air.

Aus der DE 43 38 382 A1 ist ein Abzug der eingangs genannten Art bekannt, bei dem das Führungsmittel einen Kanal aufweist, wobei der Kanal Durchbrüche hat, um Luft in ein zusätzliches Luftleitprofil zu leiten, das wiederum eine Lochplatte zum Austreten der Luft hat.From the DE 43 38 382 A1 a trigger of the aforementioned type is known in which the guide means comprises a channel, wherein the channel has openings to direct air into an additional Luftleitprofil, which in turn has a perforated plate for the escape of air.

Schließlich ist auch aus der DE 103 38 284 A1 ein Abzug der eingangs genannten Art bekannt, bei dem mit dem Führungsmittel und einem separaten Schenkel ein Kanal gebildet ist, um Luft in die Abzugskammer einzuleiten.Finally, also from the DE 103 38 284 A1 a deduction of the type mentioned, in which with the guide means and a separate leg a channel is formed to introduce air into the discharge chamber.

Derartige Abzüge werden beispielsweise im Laborbetrieb eingesetzt, um Personen von der Kontamination mit gesundheitsgefährdenden Stoffen zu bewahren. Zu diesem Zweck sollte ein im Bereich der Bedienperson nahe der Betätigungsöffnung beim Hantieren freigesetzter Schadstoff einerseits möglichst schnell und vollständig ins Innere des Abzugs hereingesaugt werden. Andererseits sollte aber nach Möglichkeit vermieden werden, dass einmal in den Abzug hineingesaugte Schadstoffe wieder aus dem Abzug herausgelangen können.Such deductions are used, for example, in the laboratory to protect people from contamination with hazardous substances. For this purpose, a pollutant released in the area of the operator near the actuating opening should, on the one hand, be sucked into the interior of the trigger as quickly and completely as possible. On the other hand, however, it should be avoided as far as possible that pollutants that have once been sucked into the trigger can escape from the trigger again.

Das der Erfindung zugrunde liegende Problem ist es, einen Abzug anzugeben, mit dem sich eine möglichst sofortige Entfernung aus dem Bereich der Betätigungsöffnung ergibt, wobei sich eine Belastung im Bereich der Betätigungsöffnung aus dem Inneren des Abzugs heraus möglichst vermeiden lassen sollte.The problem underlying the invention is to provide a trigger with which an immediate removal as possible from the area of the actuating opening results, with a load in the area of the actuating opening should be possible to avoid out of the interior of the trigger out as possible.

Das Problem wird dadurch gelöst, dass bei einem Abzug der eingangs genannten Art das Führungsmittel mindestens einen ersten in das Führungsmittel integrierten Kanal zur Versorgung von der Führung benachbarter Düsen mit Luft aufweist, wobei die Düsen einem Innenraum des Abzugs zugewandt und an den ersten Kanal angrenzend angeordnet sind.The problem is solved in that in a trigger of the type mentioned, the guide means comprises at least a first integrated in the guide means channel for supplying the leadership of adjacent nozzles with air, wherein the nozzles facing an interior of the trigger and disposed adjacent to the first channel are.

Auf diese Weise können die Düsen, mit denen ein Begleiten des Absaugens von Schadstoffen ins Innere des Abzugs hinein derart möglich ist, dass Luft im Bereich der Betätigungsöffnung einerseits ins Innere des Abzugs beschleunigt und andererseits verdünnt wird, einfach und effektiv mit Luft versorgt werden. Diese Düsen lassen sich durch das Integrieren des Kanals in das Führungsmittel für das Verschließelement zusammen mit diesem besonders weit vorne anordnen, so dass eine gute Verdünnungswirkung und Transportwirkung der Schadstoffe ins Innere des Abzugs erzielt wird.In this way, the nozzles with which accompanying the suction of pollutants into the interior of the trigger is possible in such a way that air in the region of the actuation opening on the one hand accelerated into the interior of the trigger and on the other hand is diluted, can be easily and effectively supplied with air. These nozzles can be arranged by integrating the channel in the guide means for the closing element together with this particularly far forward, so that a good dilution effect and transport effect of pollutants is achieved inside the trigger.

Eine Weiterbildung der Erfindung zeichnet sich dadurch aus, dass das Führungsmittel einen zweiten Kanal zur Versorgung von der Betätigungsöffnung benachbarter weiterer Düsen mit Luft aufweist. Dabei können die Düsen zur Erzeugung von den Seitenwänden zugeordneten Wandstrahlen und die weiteren Düsen zur Erzeugung von einem Boden zugeordneten Bodenstrahlen dienen. Auf diese Weise lässt sich die Luft im gesamten Randbereich der Betätigungsöffnung wirkungsvoll mittels der Düsen verdünnen und ins Innere des Abzugs hineinblasen. Die Absaugwirkung des Abzugs wird auf diese Weise wirkungsvoll unterstützt.A development of the invention is characterized in that the guide means has a second channel for supplying the actuating opening of adjacent further nozzles with air. In this case, the nozzles can be used to generate wall beams assigned to the side walls and the further nozzles can be used to generate floor beams assigned to a floor. In this way, the air in the entire edge region of the actuating opening can effectively dilute by means of the nozzles and blow into the interior of the trigger. The suction effect of the trigger is effectively supported in this way.

Eine andere Weiterbildung der Erfindung ist dadurch gekennzeichnet, dass die Düsen und/oder die weiteren Düsen lang gestreckt sind und/oder dass eine Vielzahl Düsen und/oder weitere Düsen die Betätigungsöffnung umgebend angeordnet sind. Auf diese Weise lässt sich die gesamte Betätigungsöffnung wirkungsvoll mit den Düsen oder den langgestreckten Düsen umgeben, so dass im gesamten Randbereich der Betätigungsöffnung eine wirkungsvolle Sperre für das Zurückströmen von im Abzug befindlichem Gas entsteht. Besonders vorteilhaft ist es, wenn das Führungsmittel einen dem Boden benachbarten Querkanal aufweist. Ein solcher Querkanal kann zur Aufnahme der weiteren Düsen dienen und gleichzeitig spoilerartig ausgebildet sein. So wird durch diesen Querkanal aufgrund des spoilerartigen Profils das Einströmen der Luft möglichst wenig behindert. Gleichzeitig können die mittels des zweiten Kanals versorgten weiteren Düsen möglichst weit vorn angeordnet werden.Another development of the invention is characterized in that the nozzles and / or the further nozzles are elongated and / or that a plurality of nozzles and / or further nozzles are arranged surrounding the actuating opening. In this way, the entire actuating opening can be effectively surrounded with the nozzles or the elongated nozzles, so that an effective barrier for the backflow of gas located in the trigger arises in the entire edge region of the actuating opening. It is particularly advantageous if the guide means has a transverse channel adjacent to the floor. Such a transverse channel can serve to receive the other nozzles and at the same time be designed like a spoiler. Thus, due to the spoiler-like profile, the inflow of air is hindered as little as possible by this transverse channel. At the same time, the additional nozzles supplied by means of the second channel can be arranged as far forward as possible.

Bei der Erfindung ist es weiter von Vorteil, wenn das Verschließelement zweiteilig ausgebildet ist und das Führungsmittel eine erste Führung für den ersten Teil und eine zweite Führung für den zweiten Teil hat. Bei dieser teleskopartigen Ausführung des Verschließelementes kann so eine geringe Bauhöhe bei gleichzeitig hoher Funktionalität erzielt werden. Weil andererseits beide Teile des Verschließelementes in dem selben Führungsmittel mit dem Kanal für die Düsen integriert sind, lässt sich das Verschließelement und mit diesem die Positionierung der Düsen möglichst weit nach vorne verlagern.In the invention, it is also advantageous if the closing element is formed in two parts and the guide means has a first guide for the first part and a second guide for the second part. In this telescopic design of the closing element so a low height can be achieved with high functionality at the same time. On the other hand, because both parts of the closing element are integrated in the same guide means with the channel for the nozzles, the closing element and with this the positioning of the nozzles as far as possible can be moved forward.

Eine andere Ausführungsform der Erfindung zeichnet sich durch einen Anschluss für das Führungsmittel zum Versorgen des ersten Kanals und/oder des zweiten Kanals mit Luft aus. Auf diese Weise lässt sich das Führungsmittel modular gestalten und kann einfach in oder vor der Betätigungsöffnung des Abzugs angeordnet werden. Eine Quelle für eine Luftströmung, beispielsweise ein Gebläse, kann dabei an einem beliebigen Ort des Abzugs angeordnet sein. Durch Verbinden eines Auslasses dieses Gebläses mit dem Anschluss ist der Abzug dann bereits betriebsbereit. Von besonderem Vorteil bei der Erfindung ist es, wenn das Führungsmittel am vorderen Rand der Seitenwände angeordnet ist. Hierbei lässt sich eine besonders gute Wirkung erzielen. Insbesondere lässt sich die Wirkungsweise des Abzugs mit den Erfindungsmerkmalen dadurch noch steigern, dass das Führungsmittel die Säulenwände vorderseitig überragend angeordnet ist.Another embodiment of the invention is characterized by a connection for the guide means for supplying the first channel and / or the second channel with air. In this way, the guide means can be made modular and can be easily arranged in or in front of the actuation opening of the trigger. A source for an air flow, for example a fan, can be arranged at any location of the trigger. By connecting an outlet of this fan to the port, the trigger is ready for use. Of particular advantage in the invention, it is when the guide means is arranged at the front edge of the side walls. Here, a particularly good effect can be achieved. In particular, the mode of action of the trigger with the features of the invention can be further enhanced by virtue of the fact that the guide means is arranged projecting the column walls on the front side.

Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
eine schematische Darstellung eines Abzugs mit den Erfindungsmerkmalen in einer perspektivischen Ansicht,
Fig. 2
Führungsprofile des Abzugs von Fig. 1,
Fig. 3
eine Detaildarstellung des rechten unteren Bereichs einer Betätigungsöffnung des Abzugs,
Fig. 4
den Querschnitt eines Führungsprofils, und
Fig. 5
das Führungsprofil in einer Rückansicht.
An embodiment of the invention will be explained in more detail with reference to the drawing. Show it:
Fig. 1
a schematic representation of a deduction with the features of the invention in a perspective view,
Fig. 2
Guide profiles of the deduction of Fig. 1 .
Fig. 3
a detailed representation of the lower right region of an actuating opening of the trigger,
Fig. 4
the cross-section of a guide profile, and
Fig. 5
the guide profile in a rear view.

Fig. 1 zeigt eine schematische Darstellung eines Abzugs 10 mit den Erfindungsmerkmalen in einer perspektivischen Ansicht. Wie sich der Figur entnehmen lässt, weist der Abzug 10 Seitenwände 11, 12, eine obere Abdeckung 13 und einen Boden 14 auf, die gemeinsam einen Innenraum 15 bilden. Der Innenraum 15 ist durch eine Betätigungsöffnung 16 zugänglich, die mittels eines Verschließelementes 17 verschließbar ist. Bei dem gezeigten Ausführungsbeispiel handelt es sich bei dem Verschließelement um einen Vertikalschieber 17. Fig. 1 shows a schematic representation of a trigger 10 with the features of the invention in a perspective view. As the figure shows, the trigger 10 has side walls 11, 12, an upper cover 13 and a bottom 14, which together form an inner space 15. The interior 15 is accessible through an actuating opening 16, which is closable by means of a closing element 17. In the embodiment shown, the closing element is a vertical slide 17.

Der Schieber 17 ist in Führungsschienen 18, 19 geführt, die den Seitenwänden 11, 12 benachbart und diese jeweils nach vorne hin überragend angeordnet sind. Zum Verschieben ist der Schieber 17 in Führungsnuten vertikal verschiebbar geführt, die sich jeweils in den Führungsschienen 18, 19 von oben nach unten erstrecken, wie nachfolgend noch näher erläutert.The slider 17 is guided in guide rails 18, 19, which are adjacent to the side walls 11, 12 and these are respectively arranged projecting forward. To move the slider 17 is guided vertically displaceable in guide grooves, which extend in each case in the guide rails 18, 19 from top to bottom, as explained in more detail below.

Fig. 2 zeigt die Führungsschienen 18, 19 in einem von dem Abzug 10 abgenommenen Zustand. Die Führungsschienen 18, 19 haben jeweils zwei Führungsnuten 20, 21, von denen in der Figur nur die Führungsnuten 20, 21 der Führungsschiene 19 zu sehen sind. Die Führungsnuten 20, 21 dienen zum Aufnehmen und Führen des Schiebers 17. Insbesondere kann in den Fällen, in denen der Schieber 17 zweiteilig ausgeführt ist, ein Teil des Schiebers 17 in der Nut 20 und ein anderer Teil des Schiebers 17 in der Nut 21 jeweils geführt werden. Auf diese Weise lässt sich die zum vollständigen Verschließen der Betätigungsöffnung 16 mit dem Schieber 17 erforderliche Bauhöhe des Abzugs 10 reduzieren. Wie sich der Figur weiter entnehmen lässt, ist im unteren Bereich zwischen den Führungsschienen 18, 19 ein Querprofil 22 angeordnet, das die Führungsschienen 18, 19 dort miteinander verbindet. Am von dem Querprofil 22 abgewandten Ende der Führungsschiene 19 ist ein Anschluss 23 zum Anschließen an eine Fluidleitung des Abzugs 10 angeordnet. Im Einzelnen sind im Inneren der Führungsschienen 18, 19 und des Querprofils 22 Kanäle angeordnet, auf die nachfolgend noch näher eingegangen wird. Diese Kanäle lassen sich mit dem Anschluss 23 mit einem Gebläse des Abzugs 10 verbinden, so dass hier ein Fluid, insbesondere Luft durch die Kanäle zu nicht in der Figur sichtbaren Düsen gefördert werden kann. Die Luft kann sodann durch die Düsen austreten und entlang der Seitenwände oder des Bodens zum Innenraum 15 streicheln, wie dies durch Pfeile in der Figur angedeutet ist. Fig. 2 shows the guide rails 18, 19 in a detached from the trigger 10 state. The guide rails 18, 19 each have two guide grooves 20, 21, of which only the guide grooves 20, 21 of the guide rail 19 can be seen in the figure. The guide grooves 20, 21 serve to receive and guide the slider 17. In particular, in the cases where the slider 17 is made in two parts, a part of the slider 17 in the groove 20 and another part of the slider 17 in the groove 21 respectively be guided. In this way, the height of the trigger 10 required for completely closing the actuating opening 16 with the slide 17 can be reduced. As can be seen from the figure, a transverse profile 22 is arranged in the lower region between the guide rails 18, 19, which connects the guide rails 18, 19 to one another there. At the end remote from the transverse profile 22 of the guide rail 19, a connection 23 for connection to a fluid line of the trigger 10 is arranged. Specifically, 22 channels are arranged in the interior of the guide rails 18, 19 and the transverse profile, which will be discussed in more detail below. These channels can be connected to the connection 23 with a fan of the trigger 10, so that here a fluid, in particular air can be promoted through the channels to not visible in the figure nozzles. The air may then exit through the nozzles and stroke along the sidewalls or floor to the interior 15, as indicated by arrows in the figure.

Fig. 3 zeigt eine Detaildarstellung des rechten unteren Endes der Betätigungsöffnung. Wie sich der Figur entnehmen lässt, ist die Führungsnut 20 am vorderen Ende der Führungsschiene 18 angeordnet. Auf diese Weise kann der Schieber 17 sehr weit vorne im Bereich der Seitenwände 11, 12 beziehungsweise noch vor diesen angeordnet werden. Der Figur ist weiter zu entnehmen, dass das Querprofil 22 an seiner von außen her angeströmten Seite ein abgerundetes Spoilerprofil 24 aufweist. Dieser Spoiler 24 dient dazu, die einströmende Luft laminar in den Innenraum 15 zu führen und Verwirbelungen dabei möglichst zu verhindern. Fig. 3 shows a detailed view of the right lower end of the actuating opening. As can be seen from the figure, the guide groove 20 is arranged at the front end of the guide rail 18. In this way, the slider 17 can be arranged very far forward in the region of the side walls 11, 12 or even before them. It can also be seen from the figure that the transverse profile 22 has a rounded spoiler profile 24 on its side which flows in from the outside. This spoiler 24 serves to guide the incoming air laminar into the interior 15 and to prevent turbulence as possible.

Fig. 4 zeigt einen Querschnitt der Führungsschiene 19. Die Führungsschiene 18 entspricht dabei im Wesentlichen der Führungsschiene 19, ist allerdings spiegelbildlich aufgebaut. Wie sich der Figur entnehmen lässt, sind im Inneren der Führungsschiene 19 zwei Kanäle 25, 26 ausgebildet. Der Figur ist außerdem zu entnehmen, dass sich dem Innenraum zugewandt und an den Kanal 26 angrenzend eine Düse 27 in der Führungsschiene 19 befindet. Die Düse 27 ist in Fluidverbindung mit dem Kanal 26 und wird mittels des Anschlusses 23 durch den Kanal 26 mit Zuluft versorgt. Im Gegensatz dazu ist der Kanal 25 in Fluidverbindung mit dem Anschluss 23 der Führungsschiene 19 oder einem weiteren Anschluss 23 im Bereich der Führungsschiene 18. Der Kanal 25 dient zur Fluidführung zu dem im Inneren des Querprofils 22 angeordneten Kanal, der weitere Düsen mit Fluid versorgt. Fig. 4 shows a cross section of the guide rail 19. The guide rail 18 corresponds substantially to the guide rail 19, however, is constructed in mirror image. As the figure shows, two channels 25, 26 are formed in the interior of the guide rail 19. The figure can also be seen that facing the interior and adjacent to the channel 26, a nozzle 27 is located in the guide rail 19. The nozzle 27 is in fluid communication with the channel 26 and is supplied by the port 23 through the channel 26 with supply air. In contrast, the channel 25 is in fluid communication with the port 23 of the guide rail 19 or another port 23 in the area the guide rail 18. The channel 25 serves for fluid guidance to the arranged in the interior of the transverse profile 22 channel which supplies additional nozzles with fluid.

Fig. 5 zeigt eine Teildarstellung einer Rückansicht der Führungsschiene 19. Zu erkennen sind mehrere Düsen 27, die in Vertikalrichtung voneinander beabstandet in der Führungsschiene 19 angeordnet sind. Fig. 5 shows a partial view of a rear view of the guide rail 19. To recognize are a plurality of nozzles 27, which are arranged spaced apart in the vertical direction in the guide rail 19.

Nachfolgend wird die Wirkungsweise des Abzugs 10 anhand der Figuren näher erläutert. Im Einzelnen wird mittels eines im Abzug 10 angeordneten Gebläses Zuluft über den Anschluss 23 in die Kanäle 25, 26 eingeblasen. Der Kanal 26 versorgt dabei die in den Führungsschienen 18, 19 angeordneten Düsen 27 mit Zuluft, so dass aus den Düsen 27 Luft entlang der Seitenwände 11, 12 in den Innenraum 15 eingeblasen wird. Auf gleiche Weise versorgt der Kanal 25 in einem Kanal in dem Querprofil 22 angeordnete und ebenfalls einwärts gerichtete Düsen mit Zuluft, so dass auch hier durch diese Düsen eine in den Innenraum 15 gerichtete Luftströmung erzeugt wird, die den Boden 14 entlang streicht. Auf diese Weise werden Gase im Bereich der Betätigungsöffnung 16 verdünnt und unmittelbar in den Innenraum 15 des Abzugs 10 befördert. So lässt sich das Ausbruchsverhalten des Abzugs 10 verbessern, wobei gleichzeitig mit geringer Saugleistung eine gute Absaugleistung gewährleistet wird.The operation of the trigger 10 will be explained in more detail with reference to the figures. In detail, supply air is blown into the channels 25, 26 via the connection 23 by means of a blower arranged in the outlet 10. The channel 26 supplies the arranged in the guide rails 18, 19 nozzles 27 with supply air, so that from the nozzles 27 air along the side walls 11, 12 is blown into the interior 15. In the same way supplies the channel 25 arranged in a channel in the transverse profile 22 and also inwardly directed nozzles with supply air, so that also here through these nozzles directed into the interior 15 air flow is generated, which sweeps the bottom 14 along. In this way, gases are diluted in the region of the actuating opening 16 and transported directly into the interior 15 of the trigger 10. Thus, the outbreak behavior of the trigger 10 can be improved, while at the same time ensuring good suction performance with low suction power.

Bezugszeichenlistte: Signed list:

1010
Abzugdeduction
1111
SeitenwandSide wall
1212
SeitenwandSide wall
1313
Abdeckungcover
1414
Bodenground
1515
Innenrauminner space
1616
Betätigungsöffnungactuating opening
1717
Schieberpusher
1818
Führungsschieneguide rail
1919
Führungsschieneguide rail
2020
Führungsnutguide
2121
Führungsnutguide
2222
Querprofilcross Section
2323
Anschlussconnection
2424
Spoilerspoiler
2525
Kanalchannel
2626
Kanalchannel
2727
Düsejet

Claims (10)

  1. Fume hood with an extraction chamber which has side walls (11, 12), an access opening (16) that is closable by means of a closing element (17) and guiding means (18, 19) with a guide (20, 21) for the closing element (17), characterised in that the guiding means (18, 19) possesses at least a first duct (26) that is integrated into the guiding means (18, 19) for supplying air to nozzles (27) neighbouring the guide (20, 21), wherein the nozzles (27) are facing towards an interior space (15) of the fume hood (10) and are arranged adjacent to the first duct (26).
  2. Fume hood according to claim 1, characterised in that the guiding means (18, 19) possesses a second duct (25) for supplying air to additional nozzles in the neighbourhood of the access opening (16).
  3. Fume hood according to claim 2, characterised in that the nozzles (27) serve to produce wall jets assigned to the side walls (11, 12) and the additional nozzles serve to produce floor jets assigned to a floor (14).
  4. Fume hood according to claim 3, characterised in that the nozzles (27) and/or the additional nozzles are strung out and/or that a plurality of nozzles (27) and/or additional nozzles are arranged to surround the access opening (16).
  5. Fume hood according to one of the preceding claims, characterised in that the guiding means possesses a transverse duct (22) neighbouring the floor.
  6. Fume hood according to claim 5, characterised in that the transverse duct (22) possesses the additional nozzles and a spoiler-like profile (24).
  7. Fume hood according to one of the preceding claims, characterised in that the closing element (17) is formed in two parts and that the guiding means (18, 19) has a first guide (20) for the first part and a second guide (21) for the second part.
  8. Fume hood according to one of the preceding claims, characterised by a connector (23) for the guiding means (18, 19) for supplying the first duct (26) and/or the second duct (25) with air.
  9. Fume hood according to one of the preceding claims, characterised in that the guiding means (18, 19) is arranged on the front edge of the side walls (11, 12).
  10. Fume hood according to claim 9, characterised in that the guiding means (18, 19) protrudes over the front side of the side walls (11, 12).
EP10162583.8A 2009-05-11 2010-05-11 Extractor with frontal window guide Not-in-force EP2251105B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10162583T PL2251105T3 (en) 2009-05-11 2010-05-11 Extractor with frontal window guide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202009006785U DE202009006785U1 (en) 2009-05-11 2009-05-11 Trigger with upstream window guide

Publications (3)

Publication Number Publication Date
EP2251105A2 EP2251105A2 (en) 2010-11-17
EP2251105A3 EP2251105A3 (en) 2012-08-15
EP2251105B1 true EP2251105B1 (en) 2014-04-02

Family

ID=41078995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10162583.8A Not-in-force EP2251105B1 (en) 2009-05-11 2010-05-11 Extractor with frontal window guide

Country Status (5)

Country Link
EP (1) EP2251105B1 (en)
DE (1) DE202009006785U1 (en)
DK (1) DK2251105T3 (en)
ES (1) ES2465521T3 (en)
PL (1) PL2251105T3 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI125767B (en) * 2013-05-29 2016-02-15 Climecon Oy hood
CN103272818B (en) * 2013-06-05 2014-02-26 广州穗剑实验室科技有限公司 Novel energy-saving environment-friendly numerical-control fume hood of laboratory
DE102013215667B4 (en) * 2013-08-08 2018-02-01 Konrad Kreuzer suction
DE102014202271B3 (en) * 2014-02-07 2015-03-05 Konrad Kreuzer Modular extraction device
DE102015103768B4 (en) * 2015-03-15 2020-10-22 Waldner Ag Weighing deduction
DE102015103765B4 (en) * 2015-03-15 2020-10-22 Waldner Ag Weighing deduction

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1002297A (en) * 1960-06-14 1965-08-25 Henry George Frederick Jenning Improvements in or relating to fume cupboards
DE4338382C2 (en) * 1993-11-10 2002-04-11 Wrt Laborbau Gmbh & Co Kg Laboratory furniture designed as a fume cupboard
DE10338284B4 (en) * 2002-08-20 2007-02-08 E. Renggli Ag deduction

Also Published As

Publication number Publication date
PL2251105T3 (en) 2014-08-29
DE202009006785U1 (en) 2009-09-17
DK2251105T3 (en) 2014-05-19
ES2465521T3 (en) 2014-06-06
EP2251105A3 (en) 2012-08-15
EP2251105A2 (en) 2010-11-17

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