EP2055398B1 - Mobile fume hood - Google Patents

Abstract

Mobile vacuum cabinet has working chamber with media hoses and connectors and air aspiration connection. Media connection (1) has complete series of media connections for all standard media and has flexible connection hoses for these extending from below extraction hood and with couplings for fixed supply connections. Media connections can extend from left or right sides of cabinet. Cabinet can have roller shutter (3) for closure.

Description

The invention relates to a mobile trigger with a working space, a media connection device for supplying media to the working space and an exhaust air connection device.

There are mobile, especially on rolling tables patched devices in the form of extracted cabins known that provided as a media connection device only with electrical connections and air technology not necessarily meet the requirements of DIN 12924, Part 1. They are therefore not to be regarded as fully fledged prints and used.

From "For Tomorrow's Environment" in Prospectus, 3/2000, the Labcaire Systems LTD. in Clevedon, North Somerset, BS 2162 H, England is already known a safety workbench with a working space that is designed mobile. From "The New Mobility in the Laboratory, Mobilien W 90." in Prospectus "Laboratory System Variolab", 2/94 of the company. Waldner D-88239 Wangen is still a between the on-site media supply and the deductions in a laboratory room arranged media supply device known to lead from the flexible lines to the respective deductions to be supplied.

The document DE-U1-299 02130 discloses a trigger according to the prior art.

The object underlying the invention is to provide a mobile trigger of the type mentioned, the full value, that is equivalent to a stationary standard deduction in terms of its functions, and meets the corresponding German industrial standard.

This object is achieved by the trigger according to claim 1.

According to the invention, the trigger comprises one solved by the fact that the media connection device, which comprises a complete set of media connections for all common standard media, and the media connection device and the exhaust device are provided with flexible connecting hoses, which consist of the trigger base lead out and are provided with couplings for connection to appropriate stationary facilities.

The mobile trigger according to the invention thus has media connections for the media sewage, gas, water and electrical energy and an exhaust connection, which are previously provided only in stationary, fixed to the ground fume cupboards as a complete equipment.

Due to the arrangement of the flexible connection cables, which can be optionally led out on the lower part right and left, connection possibilities of the mobile trigger are optionally depending on the possible where the supply device is prepared by the customer. This can be the case on the floor, on the wall or on the ceiling. Due to the flexible connection cables, the mobile trigger is still movable even when already connected, the mobility being achieved by the arrangement of rollers.

Preferably, the mobile trigger is dimensioned and constructed so that it can be driven by normal provided in public buildings doors and thus can be used in different rooms.

• Fig. 1 in einer perspektivischen Ansicht ein erstes Ausführungsbeispiel,
• Fig. 2 in einer perspektivischen Ansicht ein zweites Ausführungsbeispiel und
• Fig. 3 in einer perspektivischen Ansicht ein drittes Ausführungsbeispiel.

In the following, particularly preferred embodiments of the trigger according to the invention will be described in detail with reference to the accompanying drawings. Show it

• Fig. 1 in a perspective view of a first embodiment,
• Fig. 2 in a perspective view, a second embodiment and
• Fig. 3 in a perspective view, a third embodiment.

The illustrated in the drawings embodiments of a mobile trigger comprise a structure with a working space, the can be opened and closed via a window 11 and the media can be supplied via a media connection device 1 different media.

The trigger is mounted on wheels and thus movable.

The media connection device 1 consists at least of a complete set of media connections, which are customary with standard prints. a. for fuel gas, (propane or inert gas), water, sewage, and electrical energy. Furthermore, an exhaust air connection is provided.

The window 11 for opening and closing the working space is designed as a two-part sliding window, which is opened in opposite directions in the arrow direction, wherein the formation is such that the lower sliding window part is sunk down when opening down so that thereby arranged on the front panel 12 facilities for Actuating the media, in particular the valves are covered, so that when the sliding window is open, the operation of the media supply is not possible. This results in a high level of passive safety for the operator, since the user is forced to close the trigger, to begin the operations, for example, the attempts in the work space and release the media.

The trigger housing is formed in the lower part, for example, up to a height of 900 mm from wood, plastic and metal materials. At the top, that is, for example, from a height of 900 mm to the top of the trigger side and rear a single-pane safety glass is provided, which is, for example, 6 mm thick. The front, which has the two-part counter-rotating sliding window 11 is also glazed with toughened safety glass. The lower part of the sliding window 11 is provided with transverse slides, so that the working space is accessible even in the closed state of the sliding window 11 via the cross slide.

At the lower part of the trigger is a storage space, which is accessible on the right and left side via cross roller shutters 3.

The trigger housing is completely glued by means of an adhesive and positively connected with respect to certain structural components.

The provided on the trigger roles are partially detectable.

The media connection device 1 is provided with flexible hose connections, which lead out of the lower part of the trigger and can be accommodated in the storage space when they are not needed. The connections can optionally lead out of the storage space on the left or right and can be connected via corresponding coupling devices to the hose connections with supplies that are provided in the room at any desired location.

Apart from the usual standard media connections, the trigger can be equipped with all common media connections required by the user.

As it continues in Fig. 1 is shown, the exhaust air extraction is designed so that the exhaust air sucked in two partial streams, namely an exhaust air amount of about 30% directly above the table top 7 and about 70% of the exhaust air below the hood 4 and a through a glazed, hinged for cleaning baffle 6 pressure chamber 5 is guided behind the baffle wall and in front of the rear wall of the trigger down into a lying below the table top 7 suction chamber. From there, the exhaust air connection is made by means of flexible hoses to the provided in the room exhaust connection.

To support the discharge of heavy gases on the table top 7, a support fan 2 is provided, which introduces a Zuluftstützstrahl at the front edge of the worktop over the inflow, which is designed as a hollow profile, which is generated by means of a tube fan.

The arrangement and design of the intake openings, as well as the above-described air flow effect that the trigger with a minimum air quantity of only 300 m ³ / h is operable, which means corresponding savings compared to conventional deductions, with a minimum air flow of about 350 to 400 m ³ / h work.

At the in Fig. 2 illustrated embodiment, a modified form of air discharge is provided, in turn, the suction is carried out in two partial streams above the table top 7 and below the hood 4 with a distribution of the exhaust air amount in about 30% and about 70% each of the total amount of exhaust air.

The sucked on the table top 7 exhaust air amount is passed through a below the table top 7 pressure chamber 14 and from there via in the side surfaces flush integrated air ducts 10 in a second located above the hood roof pressure chamber 8, in which also sucked directly below the hood 4 exhaust air volume to be led. From the pressure chamber 8, the exhaust air connection takes place by means of flexible hoses 9 either left or right through the trigger pages to the provided in the room exhaust connection.

At the in Fig. 3 illustrated embodiment, the air duct is reversed, so that the exhaust air, which is sucked in above the hood 4, is guided via the pressure chamber 8 and air ducts 13 down into the pressure chamber 14, in which also sucked above the table top 7 exhaust air is performed. The pressure chamber 14 is connected via corresponding hoses with the exhaust port of the room.

The above-described embodiments of the trigger according to the invention, it is also common that internal and externally disconnectable sockets are provided and that the exhaust ventilation via built-in Abzugspfosten function indicators with exhaust air activation by means of radio transmission to the interface in the electric subdistributor in the classroom or laboratory space.

Claims (10)

1. Mobile fume hood, which complies with all the requirements of DIN 12924 Part 1, and which is designed for exhaust operation, with a fully contained workspace, a medium connection device (1) which includes medium connections for the media water, waste water, gas and electrical energy, for medium supply and discharge to and from the workspace, and an exhaust air connection device (2, 4, 5, 6, 9, 10, 14), wherein

   - the fume hood is provided with castors on the bottom, and

   - the medium connection device (1) and the exhaust air connection device (2, 4, 5, 6, 9, 10, 14) are provided with flexible connecting lines and couplings for connection to corresponding stationary devices, and at least the connection lines of the medium connection device (1) lead out of the bottom part of the fume hood.
2. Fume hood according to claim 1, wherein the connection lines of the medium connection device (1) selectively lead out either on the right or the left side of the fume hood.
3. Fume hood according to claim 1 or 2, wherein the connecting lines of the medium connection device (1) can be housed in storage compartments at the bottom of the fume hood, which can be opened and closed by roller shutters (3).
4. Fume hood according to any one of the preceding claims, wherein a hollow profile, through which a supply supportive air jet can be introduced into the workspace for discharge of heavy gases from the workspace, is provided at a front edge of a worktop (7) disposed in the workspace.
5. Fume hood according to any one of the preceding claims, wherein the exhaust air connection device (2, 4, 5, 6, 9, 10, 14) is configured such that the fume hood is operable with a minimum exhaust air quantity of 300 m³/h.
6. Fume hood according to any one of the preceding claims, wherein the exhaust air connection device (2, 4, 5, 6, 9, 10, 14) is configured such that the exhaust air is discharged from the workspace via a first and a second partial stream.
7. Fume hood according to claim 6, wherein the first partial stream discharges approximately 30% of the exhaust air over the worktop (7), and the second partial stream discharges approximately 70% of the exhaust air beneath the fume hood roof (4) from the workspace.
8. Fume hood according to any one of the preceding claims, wherein the workspace can be opened through a two-part window (11), and wherein the two parts of the window (11) are movable downwards or upwards in opposite directions.
9. Fume hood according to claim 8, wherein the lower part of the window (11) is movable downward to the extent that, when the window is open, devices for operating the media supply into the workspace are covered by the lower part of the window (11).
10. Fume hood according to any one of the preceding claims, wherein a pressure chamber (8), into which exhaust air is sucked from the workspace and discharged from the fume hood through a flexible exhaust air line disposed proximate of the pressure chamber (8) for connection to a corresponding stationary device, is disposed above a fume hood roof (4).

Images