EP3102346B1 - Modular trigger device - Google Patents

Description

1. Field of the invention

The present invention relates to a modular fume hood device, in particular for laboratory areas.

2. Background

Fume hoods have long been known from the state of the art, particularly for laboratory areas, and are covered in particular in the DIN EN 14175 standard (see sections 1 - 7). Fume hoods are intended to provide a safe working environment for scientists, engineers and medical professionals who work in laboratories with dangerous/critical substances.

Extractor hoods are usually connected to existing ventilation units to extract air from an interior space enclosed by the extractor hood. Extractor hoods are also provided with various connections, for example to lead liquid and/or gaseous media to or into the extractor hood. Known extractor hoods often weigh more than 500 kg and are usually more than 2.7 m high. According to the DIN EN 14175 standard, extractor hoods should have an access option (for example through a vertically movable front window) with a minimum opening height of 1.8 m, whereby this access option must in turn be able to be completely closed.

State-of-the-art extraction devices are usually made of heavy boards (particularly chipboard), transported in individual parts to the relevant locations and then installed there more or less once. For construction and Connecting such an extractor device usually requires around ten hours of assembly on site. Usually, craftsmen from various disciplines are required to set up and connect known extractor devices, such as a carpenter, an electrician, an installer and a service technician. The extractor devices are usually delivered to the installation site in individual parts, so that not only the assembly of known extractor devices is complex, but also their transport.

When the extractor is in use, it is operated either via controls attached to the side of the extractor (e.g. switches, sockets, fittings, media channels, etc.) or via controls provided underneath a table top on which the extractor is mounted. Often, intermediate walls are provided in which the controls are arranged. This results in a relatively wide structure with four walls between two extractors when they are arranged next to each other. Accordingly, such an arrangement of two or more extractors next to each other requires a correspondingly large installation area.

If, on the other hand, the operating elements are provided below a table on which the extraction device is often arranged, corresponding installations are usually arranged both in the lower part of the extraction device and on the upper part of the extraction device. Such installations make the transport and assembly of the extraction device particularly difficult.

In recent years, the work in laboratories has changed significantly. In particular, there are now a large number of relatively short-term projects that make it necessary to be able to set up and dismantle laboratory workstations quickly, and modifications should also be possible quickly. Modern extraction devices allow the operator to work both standing and sitting. In light of these requirements, modular devices have been developed in the state of the art, which are described, for example, in the publications US 5,487,768 A , DE 295 00 607 U1 as well as DE 20 2009 006785 U1 are disclosed. The US 5,487,768 A an isolator that is intended to enable work under clean room conditions. This isolator is not an exhaust device in the sense of the present invention, but a partially enclosed work surface ventilated with highly pure air. A multi-stage, staggered filter system ensures the purity of the ventilation air in the area of the work surface, the shape of which ensures a defined, stable air flow profile above and in the area of the work surface. The DE 295 00 607 U1 In contrast, this refers to a table-top extractor that can be viewed and operated from several sides. However, the table-top extractor does not include any fittings or other connections and is otherwise specially designed for use in schools or other training facilities. DE 20 2009 006785 U1 A fume hood with a fume hood chamber is known, wherein guide means of a guide for a closing element have nozzles through which air is blown along the side walls into the interior of the fume hood.

Based on this prior art, the present invention aims to provide a modular extraction device that can be assembled and disassembled relatively quickly and can also be easily modified. In particular, the present invention aims to provide a modular extraction device that allows easy conversion or retrofitting of supply and discharge lines for process media. Furthermore, an extraction device is to be provided that has the largest possible interior space compared to its external dimensions, is provided in a lightweight construction, is easy to combine with other modular extraction devices and can be provided in numerous dimensions.

These and other objects, which will be mentioned upon reading the following description or which can be recognized by the person skilled in the art, are solved by the subject matter of the independent claims. The dependent claims develop the central idea of the present invention in a particularly advantageous manner.

3. Detailed description of the invention

A modular extraction device according to the invention, in particular for laboratory areas, comprises a housing enclosing an (interior) space with side walls and a ceiling wall, wherein at least one of the side walls comprises a window slider, wherein the walls comprise profile elements, between which plate elements are detachably arranged, and wherein at least one side wall is designed such that a further extraction device can be arranged thereon in such a way that an (interior) space enclosed by the two extraction devices is obtained.

In other words, the present invention proposes to provide the walls of an extraction device according to the invention with the aid of profile elements, in particular with the aid of hollow profile elements (in particular with the aid of aluminum hollow profiles), which comprise holding means (e.g. clamp connections, clip connections, etc.) for holding the plate elements arranged between the profile elements.

The plate elements can be made of glass, chipboard or sheet metal. The plate elements are detachably arranged on the profile elements in order to enable a modular arrangement of at least two extraction devices in a simple manner, ie in an arrangement of at least two extraction devices, the plate element or the two plate elements located between the two extraction devices can be removed, so that a space enclosed by two extraction devices is created.

The use of glass or transparent panels is particularly preferred, as this does not result in an "optical" division of space, but rather the overall impression of a uniform space is maintained, as is particularly desirable in large-scale laboratories. If the extraction device is used as a workstation for laboratories, the panel elements must also meet further requirements. If chemically aggressive/corrosive substances are used in the extraction device, the panel elements must be chemically resistant. If flammable substances are used, the panel elements should generally not be flammable or only with difficulty and should not splinter in the event of a possible deflagration. In many experiments it is also advantageous if the panels are transparent. In other experiments, access openings or cable ducts are advantageous.

In general, it is advantageous if the plate elements are as light as possible in order to keep the weight of the entire construction as low as possible. The plate elements of the extraction device should therefore not be designed as structural or load-bearing components of the extraction device. For this reason, it is advantageous that the plate elements are easily replaceable during operation, so that the plate elements or the extraction device can be adapted to the respective operating situation. This also simplifies repairs by replacing the plate elements. Depending on the application or operating situation, the plate elements can therefore be made of single or multiple panes of safety glass, transparent or opaque plastic plates, aluminum or steel plates, multi-component or multi-layer materials and/or ceramic plates.

Preferably, the extraction takes place completely or essentially completely via the ceiling wall, so that no extraction plates or extraction ducts are required.

In addition, more than two extraction devices can be arranged next to each other or one behind the other, whereby the corresponding plate elements in between can be removed so that a correspondingly large enclosed space is created. Alternatively, it is also possible not to remove the detachable plate elements between two adjacent extraction devices, so that an overall arrangement with several enclosed spaces is created.

Preferably, a multi-part profile arrangement is provided on at least one side wall in order to form at least one vertical channel which serves to accommodate the operating elements of the trigger device. A multi-part profile arrangement is preferably provided on the right, left or both front sides of the trigger device.

The multi-part profile arrangement preferably comprises an external L-shaped profile and an internal hollow profile, which can be connected to corresponding cross profiles to form a channel. Depending on requirements, the cross profiles can have different widths (e.g. 50, 100 or 150 mm), so that vertical channels of different widths can be provided depending on the application. The multi-part profile arrangement is preferably made of aluminum profiles, which can be connected to one another using clamps, clips or screw connections, for example.

In practice, vertical ducts with a width of about 50 mm are used, provided that no fittings (e.g. supply or discharge lines for media, fittings, valves, sockets, switches, safety devices, etc.) are provided in the vertical ducts.

Vertical channels with a width of about 100 mm are used in practice, as long as control elements in the vertical channel are to be accommodated, with vertical channels with a width of approximately 150 mm being used to accommodate larger built-in elements, such as fuse boxes.

If, for example, two extraction devices are connected to one another, profile arrangements with a width of only 50 mm can be used in the connection area, resulting in a space-saving, inexpensive and simple construction of such a combined extraction device system (compared to an arrangement with two independent extraction devices).

The vertical channels, which are made up of multi-part profile arrangements and accommodate the operating elements, can be provided in a particularly advantageous manner as pre-assembled front pieces, so that they can be easily replaced during operation and the assembly of such a modular extraction device can be carried out very quickly. Advantageously, a separate front piece is provided for each operating element. This means that the operating element can be easily replaced together with the profile element.

The control elements can be attached in the front area of the vertical channel, while there is still sufficient space in the rear area of the channel for corresponding cable and/or line routing.

Preferably, the cables and lines are routed upwards in the vertical duct so that they protrude from the top of the duct and can be connected there to the appropriate connectors.

Advantageously, the lines and cables are equipped with standardized plugs or quick-release couplings, so that a modular extraction device according to the invention can also be quickly set up and provided with the necessary supply. Furthermore, the vertical channels can also accommodate Operating elements for the at least one window slider, corresponding control devices and/or power supplies for the at least one window slider are arranged.

In the upper region of the at least one vertical channel, a fan arrangement can also be provided in order to be able to provide an air flow. In addition, ventilation slots can be provided in the vertical channel, which lead into the interior in order to blow air out of the interior of the extraction device, for example with the help of the fan arrangement arranged in the upper region, in order to improve the air flow in the interior of the extraction device, for example.

The incoming air prevents turbulence and backflow, which can otherwise form, especially behind the vertical post elements.

• eine Querprofilbreite von 150 mm, um größere Einbauten (z.B. eine Sicherungsvorrichtung) aufnehmen zu können;
• eine Breite von 100 mm, um Einbauten (z.B. Armaturen, Steckdosen, etc.) aufnehmen zu können;
• eine Breite von 50 mm, soweit ein vertikaler Kanal keine oder nur kleine Einbauten aufnehmen muss;
• ein Doppelpfosten mit einer Breite von 50 mm, um damit insbesondere zwei Abzugsvorrichtungen zu verbinden und soweit keine bzw. nur kleine Einbauten im vertikalen Kanal aufgenommen werden sollen;
• ein Doppelpfosten mit einer Breite von 150 oder 200 mm, um damit insbesondere zwei Abzugsvorrichtungen zu verbinden und soweit entsprechend große Einbauten im vertikalen Kanal aufgenommen werden sollen.

As already noted, the multi-part profile arrangement is modular in such a way that the width of a vertical channel formed thereby can be easily changed, in particular by exchanging the cross profiles, whereby in practice the following widths of the cross profiles/channels are used in particular:

• a cross-section width of 150 mm to accommodate larger fittings (e.g. a safety device);
• a width of 100 mm to accommodate built-in components (e.g. fittings, sockets, etc.);
• a width of 50 mm if a vertical duct has to accommodate no or only small fittings;
• a double post with a width of 50 mm, in particular to connect two extraction devices and if no or only small fittings are to be accommodated in the vertical channel;
• a double post with a width of 150 or 200 mm, in particular to connect two extraction devices and if correspondingly large fittings are to be accommodated in the vertical channel.

The widths mentioned represent common widths in practice, although other widths and combinations are also possible, depending on the application.

In a particularly preferred embodiment, two vertical channels are formed by multi-part profile arrangements, which are preferably provided on a front side of a modular extraction device (i.e. left and right on the front side, which preferably also comprises the at least one window slider).

The vertical channels are preferably about 1.7 m long. The extraction device is usually arranged/attached to a table frame that has a height of about 0.9 m, so that the installation height of the two vertical channels is between 0.9 and about 2.6 m. The extraction device itself is advantageously less than 2.0 m high, so that when mounted on such a table frame, the total height is between 2.5 and 2.8 m, preferably about 2.6 m.

Appropriately adapted horizontal profile elements (preferably at least two per side wall) are arranged between the vertical channels, so that the profile elements can provide a stable flat frame element, between which plate elements (e.g. a glass pane, chipboard and/or sheet metal panels, etc.) can be arranged in order to form a corresponding wall of the extraction device.

Preferably, the vertical channels are connected to at least two horizontally extending profile elements. The rear wall (ie one of the side walls) is preferably made of at least four Profile elements (preferably two horizontally and two vertically arranged profile elements), wherein in turn at least one plate element is arranged (detachably) between the flat frame element formed by the profile elements.

Advantageously, the at least one window slider (which is preferably provided in the front wall) is moved by means of an electrical device, which is preferably arranged in the ceiling area (in particular above the window slider).

Known extraction devices usually have a window slider arrangement that weighs up to 30 kilograms, since the window sliders are usually stabilized with corresponding counterweights. By operating the window slider using an electrical device, it is possible to dispense with heavy counterweights for the window slider and also with the usual stopping devices, since corresponding stopping points can be provided by the electrical device.

Preferably, the window slider is suspended by means of a rope or corresponding straps, so that when the window slider is raised, the rope or straps can be rolled up on a roller. Preferably, the window slider is held on two panes by means of corresponding ropes and rollers, wherein the rollers are preferably connected to one another by means of a stabilizing crossbar.

Preferably, the extraction device has window sliders on at least two side walls. This makes it possible for two people to work in the interior at the same time.

Preferably, an extraction device is arranged on the ceiling wall, whereby the ceiling wall is largely designed as a perforated ceiling panel designed to allow air flow through the ceiling wall.

The ceiling wall is preferably constructed in two parts, with a rear area of the ceiling wall being designed as a perforated plate, above which there is an exhaust air distribution chamber that is connected to a corresponding ventilation system. This space above the perforated plate serves to equalize the pressure in order to enable an even flow through the holes/perforations in the ceiling plate. The connection to the ventilation system is preferably made above the exhaust air distribution chamber (in particular on the upper wall), and an exhaust air control device (for example in the form of an adjustable flap arrangement) can also be provided in this area. The front area of the ceiling wall is preferably designed as a transparent plate that seals the extractor against the room at the top and above which a lighting device is arranged.

The extraction device advantageously has no baffles or other otherwise usual air guidance devices (e.g. nozzle devices) on the side walls, so that the only extraction advantageously takes place via the perforated ceiling plate. Advantageously, the ceiling plate is largely designed as a perforated plate, so that an air flow that runs parallel to the side walls essentially across the entire cross-section of the extraction device (almost as a type of piston flow) results. An air flow of this kind running parallel to the side walls has the particular advantage that the entire cross-sectional area of an extraction device can be safely kept free of pollutants, and it is irrelevant how many window sliders of the extraction device are open. As already noted, this means that the otherwise usual double-wall constructions using corresponding baffles, which are often provided in the area of the rear wall, can be dispensed with. and in which the air is extracted via this baffle. In contrast, with the arrangement of the extraction device proposed here, each side wall can be equipped with a corresponding window slider (ie the rear wall can also be designed with a transparent plate element so that the interior can also be seen from the rear wall). This also makes it possible to connect this side wall, which is otherwise used as a rear wall, to another extraction device. In addition, this type of flow guide shortens the average residence time of the pollutants in the interior, compared to the otherwise usual cylindrical air flow guides.

Advantageously, the panel elements of all side walls are made of transparent panels (for example, safety glass or a corresponding plastic compound). This makes it possible to view the extraction device from all sides, and work can be carried out in the interior of the extraction device from all sides using corresponding access openings (for example, additional window sliders or corresponding intervention devices).

Furthermore, it is preferred that at least gripping devices are provided on the trigger device in order to facilitate carrying the trigger devices. The gripping areas can be provided, for example, by means of extendable rods or by means of corresponding handles.

Advantageously, the extraction device (in particular the lower area of the extraction device) is adapted to be mounted on a table or base frame. This can be provided, for example, by means of appropriate connection options (e.g. clip or screw connections), for example on the multi-part profile arrangements.

Advantageously, connections, in particular electrical and/or mechanical ones, are provided above the ceiling wall, which are preferably designed as plug-in connections.

It is also advantageous if at least one media channel is provided in at least one side wall. Such media and extraction channels comprise screwed aluminum profiles that can be arranged in the side walls. These channels usually have a removable front cover in which sockets and/or fittings can be provided. Such additional channels make it easier to operate larger units, and such channels can also be installed later. All that is required is to remove the plate elements, adjust them accordingly and reinsert them into the frame element together with the channels that can be arranged between them.

The media channels can be provided both horizontally and vertically in the existing side walls. The media channels are preferably installed in the existing profile elements or in the existing profile arrangements. If necessary, however, new profile elements or profile arrangements can also be provided for this purpose.

The control elements of the extraction device are preferably arranged in the multi-part profile arrangements on their front sides. Units for automatic/remote-controlled removal of media or sockets can also be installed in the media channels. In this way, larger units can be accessed and operated safely.

Advantageously, the extraction device is designed in such a way (ie in particular the individual lengths of the profile elements and the plate elements) that they can be arranged and transported on a Euro pallet in the disassembled state.

• ein Vorderteil, umfassend die mehrteiligen Pfostenanordnungen, zur Ausbildung von beispielsweise zwei vertikalen Kanälen, einen Fensterschieber mit elektrischer Antriebseinheit und entsprechender Seilrollen, einer im oberen Bereich angeordneten Lampe, ein oberes Fenster sowie entsprechende Wartungsklappen, sowie die in den vertikalen Kanälen angeordnete Bedienelemente; vorteilhafterweise ist das Vorderteil vormontiert und weist Abmessungen von ca. 1,5 m × 1,5 m x, 0,25 m auf (um dadurch eine Abzugsvorrichtung mit einer typischen Breite von ca. 1,5 m bereitstellen zu können);
• eine Deckeneinheit mit einer Abluftvorrichtung, umfassend entsprechender Anschlüsse und Reglereinheiten;
• zerlegte Seitenwänden, optionale Unterbauten, Tischgestelle und Tischplatten.

With the present modular extraction device according to the invention, the following (main) assemblies can preferably be formed:

• a front part comprising the multi-part post arrangements for forming, for example, two vertical channels, a window slider with electric drive unit and corresponding cable pulleys, a lamp arranged in the upper area, an upper window and corresponding maintenance hatches, as well as the operating elements arranged in the vertical channels; advantageously the front part is pre-assembled and has dimensions of approximately 1.5 m × 1.5 m x 0.25 m (in order to be able to provide an extraction device with a typical width of approximately 1.5 m);
• a ceiling unit with an exhaust air device, comprising corresponding connections and control units;
• disassembled side walls, optional substructures, table frames and table tops.

The modular extraction device can therefore be easily transported and assembled, whereby it is particularly preferred that the above-mentioned parts or assemblies are dimensioned in such a way that they can be transported on a Euro pallet. Due to the comparatively low height of the extraction device, a Euro pallet loaded with the corresponding assemblies of the extraction device can be easily transported through normal doors and in normal lifts. Since the respective assemblies are not particularly heavy, they can also be assembled by just one fitter if necessary.

During assembly, the extraction device is lifted up using a lifting device (e.g. a cable pull) so that a table frame or four feet can be placed on the extraction device. The extraction device can then be lowered and levelled accordingly. After connection to the technical Optional fittings can be provided for utility facilities.

When dismantling, the optional substructure is first removed, the corresponding supply connections are dismantled, the upper part or the extraction devices are lifted and the feet or the table frame are dismantled.

In addition, due to the modular design of the fume cupboard, it is possible to install additional side channels and/or media channels during laboratory operation, to arrange additional control elements in the vertical channels, to mount additional fume cupboards on existing fume cupboards, etc.

A discharge device is provided with widths between 1.2 and 2.4 m, which are typical in practice, and preferably in 0.3 m "jumps", ie in widths of 1.2 m, 1.5 m, 1.8 m, 2.1 m and 2.4 m, whereby due to the modular structure, other widths or dimensions can also be easily provided, for example by adapting or selecting the profile elements or the plate elements accordingly.

The invention further relates to a trigger device system comprising at least two of the trigger devices described above. In such an arrangement of two trigger devices, the detachable plate elements arranged between the trigger devices were removed.

4. Description of preferred embodiments

Figur 1

eine schematische Vorderansicht einer ersten Ausführungsform einer Abzugsvorrichtung;

Figur 2

eine Vorderansicht von zwei alternativ ausgebildeten Abzugsvorrichtungen;

Figur 3

zwei Abzugsvorrichtungen, die jeweils an einer Seitenwand miteinander verbunden sind;

Figur 4

eine schematische Schnittansicht, der Abzugsvorrichtung aus Figur 1 ;

Figur 5

eine schematische Schnittansicht zweier verbundener Abzugsvorrichtungen;

Figur 6

eine erste Querschnittsansicht in Höhe des elektrischen Fensterschieberantriebs und eine zweite Querschnittsansicht in Höhe der gelochten Deckenwand;

Figur 7

eine Querschnittsansicht in Arbeitsraumhöhe;

Figur 8

eine Querschnittsansicht einer Anordnung von zwei Abzugsvorrichtungen;

Figur 9

eine weitere Querschnittsansicht zweier verbundener Abzugsvorrichtungen;

Figur 10

verschiedene Querschnittsansichten von vertikalen Kanälen, gebildet durch mehrteilige Profilanordnungen;

Figur 11

eine Querschnittsansicht eines vertikalen Kanals mit einem darin angeordneten Ventil;

Figur 12

eine Querschnittsansicht eines vertikalen Kanals, mit einer darin angeordneten Sicherungsvorrichtung.

Below is a detailed description of the figures. It shows:

Figure 1

a schematic front view of a first embodiment of a trigger device;

Figure 2

a front view of two alternatively designed trigger devices;

Figure 3

two extraction devices, each connected to each other at a side wall;

Figure 4

a schematic sectional view of the trigger device from Figure 1 ;

Figure 5

a schematic sectional view of two connected extraction devices;

Figure 6

a first cross-sectional view at the level of the electric window slider drive and a second cross-sectional view at the level of the perforated ceiling wall;

Figure 7

a cross-sectional view at workroom height;

Figure 8

a cross-sectional view of an arrangement of two trigger devices;

Figure 9

another cross-sectional view of two connected trigger devices;

Figure 10

various cross-sectional views of vertical channels formed by multi-part profile arrangements;

Figure 11

a cross-sectional view of a vertical channel with a valve arranged therein;

Figure 12

a cross-sectional view of a vertical channel with a securing device arranged therein.

Figure 1 shows a front view of a first modular extraction device 100, which is arranged on a table frame 110. Above the extraction device 100, an extraction device 120 is arranged on the extraction device 100.

The extraction device 100 is provided from multi-part vertical profile elements 130, which run from the table frame 110 up to and including the extraction device 120, and corresponding horizontally arranged profile elements 140.

As in Figure 1 As can be seen, the front side of the extraction device 100 shown comprises a window slider 150. In the table frame 110, an optional insert 160 is also provided for accommodating additional connections and operating elements.

Figure 2 shows two further embodiments of extraction devices 100 ^I and 100 ^II according to the invention. The extraction device 100 ^I shown on the left has a multi-part profile arrangement 130 ^I with which a vertical channel was formed and in which various operating elements (e.g. plugs, switches, supply and discharge lines, etc.) are accommodated. The extraction device 100 ^II shown on the right differs in that it comprises corresponding multi-part profile arrangements 130 ^II on both sides of the front. It is advantageous here that each operating element is installed in a separate, exchangeable profile element part or piece.

Figure 3 shows two modular extraction devices 100 ^III , 100 ^IV that are connected to one another. The extraction devices 100 ^III , 100 ^IV are connected to one another at one of their side walls, with profile elements being used on these side walls that do not form vertical channels. As shown, the extraction devices 100 ^III , 100 ^IV each comprise multi-part profile arrangements 130 ^III , 130 ^IV on their respective outer side walls, which form corresponding vertical channels and accommodate corresponding operating elements.

Figure 4 shows a cross section of a 100 ^V extraction device . As in Figure 4 As can be seen, a 120 ^V extraction device is arranged above a ceiling wall 180 ^V of the 100 ^V extraction device. The Ceiling wall 180 ^V is designed as a perforated (ceiling) plate in the area below an extraction chamber 190 ^V. In the area of the ceiling wall 180 ^V facing the front, a lighting arrangement 200 ^V is provided, the ceiling wall 180 ^V being transparent in this area in order to enable lighting of an interior space 210 ^V of the extraction device 100 ^V. In the front area, the extraction device 100 ^V also has a window slider 150 ^V , which can be opened and closed by an electric drive device 220 ^V.

Figure 5 shows a cross-sectional view of two modular extraction devices 100 ^VI , 100 ^VII connected to each other at their respective rear walls. As in Figure 5 As can be seen, the extraction devices 100 ^VI , 100 ^VII each comprise window slides 150 ^VI , 150 ^VII , so that with this arrangement two operators can reach into the interior of the extraction devices. In Figure 5 The flow path when the window sliders 150 ^VI , 150 ^VII are open is indicated by means of corresponding flow arrows. The relatively large perforated ceiling walls 180 ^VI , 180 ^VII provide a flow path that is essentially parallel to the side walls, so that even when the window sliders 150 ^VI , 150 ^VII are open, there is no danger of contaminated indoor air escaping to the outside.

In this embodiment, there is also an extraction chamber (vacuum chamber) 190 ^VI , 190 ^VII above the perforated (ceiling) panels, which create pressure equalization and ensure that the flow is even through the perforated (ceiling) panels. The connection to the technical ventilation system is preferably made via a nozzle 125 ^V , which preferably includes a control unit for controlling the amount of extraction air with a corresponding flap arrangement 126 ^V (cf. Figure 4 ).

The flow into the interior can be supported by supporting jets that emerge from the profiles 240 (cf. Figure 10 ) This essentially prevents possible backflows, turbulence, etc. These supporting jets preferably have a flow velocity of 1 to 2 m/s.

Figure 6 shows two cross-sectional views of the trigger mechanism from Figure 4 , the first upper cross-sectional view being a cross-sectional view at the level of the 220 ^V electric hoist, showing how a corresponding cable pull can be wound onto a crossbar. The Figure 6 The lower cross-sectional view shown is a cross-sectional view at the level of the ceiling wall 180 ^V , whereby in this view the design of the ceiling wall 180 ^V as a (largely) perforated ceiling panel can be seen.

The ceiling panel is preferably perforated throughout the entire interior area. Preferably, the ceiling panel is not perforated except in the front area where the lighting is provided. By designing the ceiling panel in this way, a substantially uniform upward flow is achieved.

Figure 7 shows a cross-sectional view of the trigger device from Figure 4 at the level of the interior 210 ^V , whereby in Figure 7 It is clearly visible how the multi-part 130 ^V profile arrangements form the vertical channels.

Figure 8 shows a cross-sectional view of two connected extraction devices 100 ^VIII , 100 ^IX , which have multi-part profile arrangements both at their connection area and at their respective opposite side walls.

Figure 9 shows a cross-sectional view of two connected extraction devices 100 ^X , 100 ^XI , wherein no multi-part profile arrangements are provided in the connection area of the two extraction devices 100 ^X , 100 ^XI , but only on their respective opposite outer sides.

Figure 10 shows three different embodiments of the multi-part profile arrangements 130, which have different widths.

The multi-part profile arrangement 130 comprises an outer, essentially L-shaped profile 230 and an inner hollow profile 240, which can be connected to corresponding cross profiles 250 to form a channel, with an additional end profile 310 being provided on the side facing the interior. The hollow profile 240 preferably has a rear air chamber 300 and also openings to the interior in order to be able to introduce the support jets through these to "stabilize" the flow. The air supply is preferably carried out via fans 340 (see. Figure 4 ), which can be provided in the upper area of the profile arrangement. For this purpose, the parts of the profile arrangement are preferably all or groups of parts connected to one another in terms of flow. In the case of a group arrangement or individually provided profile elements, these are preferably each provided with its own fan or a fan for a group.

Depending on requirements, the cross profiles can have different widths (e.g. 50, 100 or 150 mm), so that vertical channels of different widths can be provided depending on the application. The multi-part profile arrangement 130 is preferably made of aluminum profiles, which can be connected to one another using clamps, clips or screw connections, for example.

In practice, vertical ducts with a width of about 50 mm are used if no fittings (e.g. supply or discharge lines for media, fittings, valves, sockets, switches, safety devices, etc.) are planned in the vertical ducts. Vertical ducts with a width of about 100 mm are used in practice if control elements are to be accommodated in the vertical duct, whereby vertical ducts with a width of about 150 mm can be used to accommodate larger built-in elements, such as fuse boxes. If, for example, two extractor units are connected to one another, profile arrangements with a width of only 50 mm can be used in the connection area, resulting in a space-saving, inexpensive and simple structure for such a combined extractor system (compared to an arrangement with two independent extractor units).

Figure 11 shows a multi-part profile arrangement 130, wherein a connection arrangement 260 (for example a valve connection arrangement) is accommodated in the vertical channel formed thereby. Figure 12 shows an alternative embodiment of a multi-part profile arrangement 130 for forming a vertical channel, wherein a securing device 270 is accommodated in this vertical channel.

The present invention is not limited to the preceding embodiments as long as it is covered by the subject matter of the following claims. Furthermore, the preceding embodiments can be combined with and among each other in any way as long as they are covered by the subject matter of the following claims. For example, various multi-part profile arrangements can be provided on the side walls to form vertical channels or various possible combinations of extraction devices can be provided.

Claims (15)

1. Modular fume cupboard (100), in particular for laboratory regions, comprising a housing that surrounds a space (210) and has side walls and a top wall, wherein at least one of the side walls comprises a window slide (150), wherein the walls comprise profile elements (130, 140), between which plate elements are detachably arranged, wherein at least one of the profile elements (130, 140) is configured as a multi-part profile arrangement (130) in order to form a channel which serves for receiving operating elements of the fume cupboard (100), and wherein at least one side wall is configured such that a further fume cupboard (100) can be arranged thereon in such a way that a space (210) surrounded by the two fume cupboards (100) results.
2. Fume cupboard (100) according to claim 1, wherein the window slide (150) is moved by means of an electric device (220) which is preferably arranged in the top region, and/or

   wherein the window slide (150) is not acted on by counterweights, and/or

   wherein no mechanical stoppers are arranged on the window slide (150),

   wherein the electric device (220) preferably comprises means for determining the vertical position of the window slide (150).
3. Fume cupboard (100) according to any one of the preceding claims, wherein window slides (150) or closable window openings are provided on at least two side walls.
4. Fume cupboard (100) according to any one of the preceding claims, wherein the side walls are provided from plate elements which are preferably configured as non-bearing components, such that these can be replaced separately, in order to be able to adjust the fume cupboard, in ongoing operation, to the respective operating conditions, wherein the plate elements are preferably provided from the following or a combination of the following materials: single-pane or multi-pane safety glass, transparent or opaque plastics plates, aluminium or steel plates, multi-component or multi-layer materials, and/or ceramic plates.
5. Fume cupboard (100) according to any one of the preceding claims, wherein a suction device (120) is arranged on the top wall (180), wherein the top wall (180) is formed largely as a perforated top plate which can be connected to an exhaust air system, in order to serve as a suction means, wherein preferably a suction chamber or negative pressure chamber (190) is provided above the perforated top wall.
6. Fume cupboard (100) according to any one of the preceding claims, wherein the fume cupboard (100) comprises a regulation device (126) for controlling the amount of air which is suctioned out through the fume cupboard (100), wherein the regulation device (126) is preferably provided in a port arrangement (125) for connecting the fume cupboard (100) to an exhaust air system, and wherein the regulation device (126) preferably comprises an actuatable flap arrangement for limiting the amount of exhaust air.
7. Fume cupboard (100) according to any one of claims 5 or 6, wherein apart from the suction via the top plate no further suction, in particular in side or rear walls, is provided.
8. Fume cupboard (100) according to any one of the preceding claims, wherein openings are provided in the profile elements, in order to guide support jets (400) out of the profile elements and thereby influence the introduction of air into the interior, and the flow guidance.
9. Fume cupboard (100) according to any one of the preceding claims, wherein the fume cupboard (100) comprises profile elements, removable from the outside, on at least one side wall, in order to form corresponding extraction points.
10. Fume cupboard (100) according to any one of the preceding claims, wherein at least two grip regions are provided on the fume cupboard (100).
11. Fume cupboard (100) according to any one of the preceding claims,

    wherein the fume cupboard (100) is adjusted in order to be mounted on a foot stand (110), and/or

    wherein the fume cupboard (100) is of a height of less than 2.6 m, preferably a height of less than 2.0 m, and/or

    wherein the fume cupboard (100), mounted on a foot stand (110), is of a total height of between 2.5 and 2.8 m, preferably approximately 2.6 m.
12. Fume cupboard (100) according to any one of the preceding claims, wherein connectors, in particular electrical and mechanical connectors, are provided above the top wall (180), which connectors are preferably configured as pluggable connectors.
13. Fume cupboard (100) according to any one of the preceding claims, wherein at least one media channel is provided in at least one side wall, preferably in a profile element.
14. Fume cupboard (100) according to any one of the preceding claims, wherein the fume cupboard (100) is configured in such a way that, in the disassembled state, it can be transported on a Euro-pallet.
15. Fume cupboard system comprising at least two fume cupboards (100) according to any one of claims 1 to 14, wherein the fume cupboards (100) are interconnected at two adjacent side walls, such that a space (210) surrounded by the at least two fume cupboards (100) results.

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