EP3768443B1 - Hotte de laboratoire - Google Patents

Hotte de laboratoire Download PDF

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Publication number
EP3768443B1
EP3768443B1 EP19714354.8A EP19714354A EP3768443B1 EP 3768443 B1 EP3768443 B1 EP 3768443B1 EP 19714354 A EP19714354 A EP 19714354A EP 3768443 B1 EP3768443 B1 EP 3768443B1
Authority
EP
European Patent Office
Prior art keywords
fume hood
profile
weighing
inflow profile
worktop
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.)
Active
Application number
EP19714354.8A
Other languages
German (de)
English (en)
Other versions
EP3768443A1 (fr
Inventor
Jürgen Liebsch
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.)
Waldner Laboreinrichtungen SE and Co KG
Original Assignee
Waldner Laboreinrichtungen SE and Co KG
Priority date (The priority date 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 date listed.)
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Publication of EP3768443A1 publication Critical patent/EP3768443A1/fr
Application granted granted Critical
Publication of EP3768443B1 publication Critical patent/EP3768443B1/fr
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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
    • B01L1/02—Air-pressure chambers; Air-locks therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L2200/00—Solutions for specific problems relating to chemical or physical laboratory apparatus
    • B01L2200/08—Ergonomic or safety aspects of handling devices
    • B01L2200/087—Ergonomic aspects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2215/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B2215/006—Suction tables

Definitions

  • the present invention relates to a laboratory fume hood.
  • Fume hoods are an essential part of laboratories. All laboratory work that involves handling gases, vapors, suspended solids or liquids in dangerous quantities and concentrations must be carried out in laboratory fume hoods to protect laboratory personnel.
  • WO 2012/062478 A1 discloses a fume cupboard comprising a housing that defines a working space, the housing having a movable front window, a worktop that delimits the workspace on the bottom side, and an ionization electrode is arranged in an inflow profile arranged on the front edge of the worktop.
  • weighing fume cupboards have a ventilated and ventilated work area that is accessible to the laboratory employee from the front via a work opening.
  • the laboratory employee inserts his forearms into the work area, usually rests them on an armrest and thus handles the laboratory utensils and substances on the worktop.
  • Such utensils include the high-resolution laboratory balances mentioned above, but also containers in which the various substances to be portioned are located, and other tools such as a spatula to remove the substances from the container and place them in a weighing boat on the laboratory balance. After the substances have been weighed, they may be transferred to another container.
  • An object of the present invention is therefore to eliminate, or at least minimize, the disadvantages of the prior art and, moreover, to achieve advantages that cannot be achieved with conventional fume cupboards.
  • the object of the present invention is to further increase the safety of laboratory personnel when working with a fume cupboard and to further improve the accuracy of any weighing processes.
  • a laboratory fume hood comprises a housing that defines a working space, the housing having a movably mounted front window on its front, a worktop that delimits the workspace on the bottom side, and an ionization electrode that is arranged in an inflow profile arranged on the front edge of the worktop is.
  • the fume cupboard comprises an armrest which is arranged in the area of the work opening and at a distance from the inflow profile, the armrest extending along its longitudinal direction essentially over the entire width of the fume cupboard and having end faces, and in each case a side wall which laterally defines the working space determines, one end face of the armrest and the inflow profile are connected to a one-piece corner profile. The side wall, one end face of the armrest and the inflow profile are inserted into the corner profile.
  • the laboratory fume cupboard is a weighing fume cupboard for weighing pharmaceutically active or toxic substances in a laboratory, which, when used as intended Use has an always open working opening below the windshield, and wherein the windshield is rotatably connected to an upper part of the housing, such that the windshield can be pivoted from an open position to a closed position.
  • the front window is preferably a sash that can be moved in the vertical direction from an open position to a closed position and which closes the working space in the closed position.
  • the ionization electrode is detachably inserted into the inflow profile.
  • the ionization electrode can be mounted in the inflow profile without tools.
  • the inflow profile extends over the width of the worktop.
  • the ionization electrode is preferably inserted flush with the surface in the inflow profile.
  • the ionization electrode extends over at least 75% of the width of the inflow profile.
  • the fume hood further comprises a support that supports the weight of the housing, the worktop and the armrest, the corner profile being additionally connected to the support.
  • the carrier is inserted into the corner profile.
  • the x-direction refers to the width extent, the y-direction to the depth extent and the z-direction to the height extent of the fume cupboard.
  • exhaust air is mentioned in the following description, this refers to the air that is removed from the working space of the weighing hood and then fed to an exhaust air filter system for cleaning purposes.
  • a weighing fume hood that is operated in exhaust mode, i.e. one that is connected to a building-side exhaust system, air must be removed from the work area before it is released into the atmosphere on the building side.
  • the extracted and filtered exhaust air is fed back into the laboratory room in which the weighing extractor is installed using a fan, whereas in an exhaust-operated weighing extractor the exhaust air is released into the atmosphere through an exhaust air duct installed on the building is blown out.
  • An isolator or containment system is a fume hood on the front of which there are two openings, which are tightly closed on the inside within the work area using two gloves, usually made of rubber. The laboratory employee, so to speak, reaches with his hands through the openings and then immediately puts on the work gloves.
  • the in Fig. 1 The weighing hood 1 shown preferably essentially comprises the following components: a housing 10, a worktop 20, a support 30, an armrest 40, a filter system 60, a fan 70 and an outlet 90, which is preferably connected to the fan 70 via a hose 80 is.
  • the carrier 30, which is preferably designed as a table frame, comprises four legs 31 in the exemplary embodiment shown here, the bottom end of which is each provided with a leveling device not described in more detail. This leveling is advantageous if the floor on which the weighing hood 1 is placed has any unevenness, so that the entire hood 1 can be prevented from wobbling using one or more leveling devices.
  • the legs 31 are connected to one another by cross struts 32, which extend either along the width (X direction) and/or along the depth (Y direction).
  • a worktop 20 is supported on the carrier 30. This can be achieved using a 3-point storage or a 4-point storage.
  • the housing 10 is located on the carrier 30.
  • the carrier 30 thus supports the weight of the housing 10, the worktop 20 and the armrest 40.
  • the exemplary embodiment shown carries the carrier 30 preferably additionally the weight of the exhaust air or recirculating air filter system 60 as well as the fan 70 and the hose 80.
  • the housing 10, which defines a working space 19, comprises a double-walled rear wall 16 a, 16b at the rear of the working space 19. Inside the double-walled rear wall 16 there is a cavity 16c ( Fig. 2 ), through which the exhaust air is directed towards the exhaust air filter system 60.
  • the housing 10 has two side walls 15 as a lateral boundary and an upper part 12 and a hinged front window 14 on the front or top side.
  • the side walls 15, which can preferably also serve as a side cover for the rear wall 16, and the upper part 12 are fixed connected to the rear wall 16 (16a or 16b), while the front window 14 is connected to the upper part 12 in a pivotable or rotatable manner, preferably by means of a hinge 13.
  • Fig. 1 the front window 14 is shown in the closed position. However, it can be pivoted from this closed position into an open position, whereby any utensils required in the weighing extractor can be brought into the work space 19 and placed on the worktop 20.
  • utensils include, for example, high-resolution laboratory carts, containers that contain substances to be weighed, and other containers into which a substance that has already been weighed is ultimately transferred.
  • smaller utensils such as work gloves, spatulas, weighing boats and the like are normally used in such weighing hoods.
  • the side walls 15 and the upper part 12 are preferably transparent.
  • the front window 14, the upper part 12 and the side walls 15 are preferably made of acrylic glass.
  • the front window 14 is, as in Fig. 2 can be seen, convexly curved.
  • the radius of curvature is constant, so that the contour of the windshield 14 corresponds to a segment of a circle.
  • the upper part 12 is also convexly curved.
  • the radius of curvature of the windshield 14 preferably corresponds to the radius of curvature of the upper part 12.
  • the lower edge of the windshield 14 has a bead which is preferably round in cross section (Y direction).
  • this bead rests on a vertical column 17 of the same diameter that is enlarged compared to the side wall 15 and is arranged on its front edge and has a convex recess on its upper end face into which the bead of the windshield 14 comes to rest.
  • the convex curvature of the bead at the bottom of the windshield 14 corresponds to the curvature of the concave recess at the upper end of the vertical column 17 of the side wall 15.
  • an armrest 40 which could also be referred to as an inflow profile with a combined armrest function, on which the laboratory employee can rest his forearms while working so that he can carry out his work with as little fatigue as possible and with a steady hand.
  • the armrest 40 extends almost over the entire width (x direction) of the work space 19.
  • a control and / or display panel 42 via which the laboratory employee can operate important functions of the weighing fume cupboard 1 and/or that shows the laboratory employee important operating states of the weighing hood 1.
  • Fig. 1 It is difficult to see that an air passage is provided between the underside of the armrest 40 and the worktop 20. Through this air access, room air or ambient air can flow into the work space 19 due to the negative pressure prevailing in the work space 19.
  • the inflowing room air in the area of the front edge of the worktop 20 causes the air located near the surface of the worktop 20 to also be moved and transported backwards towards the rear wall 16, in which there are slot-shaped openings (not shown). becomes. So, so to speak, ground air jets are generated along the worktop 20, which help to remove heavy gases or aerosols in the area of the worktop 20. Due to this additional supply air, the fan 70 described later has to apply less suction power in order to ensure the same retention capacity.
  • the front edge of the worktop 20 is flow-optimized and convex.
  • the armrest 40 is also designed to be flow-optimized on its underside facing the worktop 20 and on its upper side facing the work opening 11.
  • the cross-sectional profile of the armrest 40 corresponds to an airfoil profile.
  • a disposal system integrated into the worktop 20 which is in the Fig. 1 and Fig. 2 is only indicated by means of a cylindrical connector 21.
  • a connecting piece 21 which protrudes towards the workspace 19 with the worktop 20 is integrated into the worktop 20, flush with the surface and downwards in the direction of the carrier 30.
  • waste materials generated when working in the weighing hood, such as packaging material or work gloves can be disposed of ergonomically and conveniently and safely from top to bottom using the force of gravity.
  • the outstanding connecting piece 21 is provided on its outer contour with several annular grooves which are used to fasten waste bags (not shown in the figures) made of plastic using O-rings.
  • the waste bags can be designed as individual bags with a closed bottom or as continuous liners. During the changing process, the waste bags are closed twice with crimping pliers or another tool so that the waste materials, which can sometimes contain vapors and aerosols, cannot escape either from the removed waste bag or from the extractor interior 19.
  • corner profiles 50 each connect a side wall 15 and one end of the armrest 40 to the carrier 30 or one of the legs 31.
  • the worktop 20 has an edge elevation or bulge.
  • This bead which is provided here without a reference number, preferably runs around the entire circumference of the worktop and prevents liquids or powders that trigger toxic or chemical reactions from accidentally spilling over the edge of the worktop 20, but rather on the worktop 20 remain.
  • the worktop 20 is preferably constructed monolithically and is preferably made from a technical ceramic.
  • the weight of the Worktop 20 is preferably (also depending on size) in a range of 40 kg to 60 kg.
  • an elastic joint seal between the worktop 20 and the rear wall 16 and between the worktop 20 and the side walls 15 is provided on both side edges and on the back.
  • the room air or ambient air which enters the work space 19 both through the air passage between the armrest 40 and the worktop 20 and through the work opening 11, is fed into the cavity with the help of the fan 70 through slots (not shown) provided in the wall element 16b 16c of the rear wall 16 sucked in.
  • the air extracted in this way passes through an opening 16d into a preferably tubular connecting flange and then into the filter 62.
  • the exhaust air After the exhaust air has been cleaned by the filter 62, it flows downwards through an opening 69 in the exhaust air filter housing 65 Towards the fan 70, through the hose 80 and exits through the outlet 90 into the laboratory room ( Fig. 1 ).
  • All components of the exhaust air filter system 60, the fan 70, the hose 80 and the outlet 90 are preferably arranged below the worktop 20. All of these components of the weighing hood 1 can preferably be attached to the carrier 30 or to a downwardly extending extension of the rear wall 16 ( Fig. 1 ).
  • a light source for illuminating the worktop 20 and, moreover, preferably the entire workspace 19, which is preferably arranged in the hinge 13.
  • the light source illuminates the part of the workspace 19 relevant to all work processes and completely illuminates the worktop 20.
  • the hinge 13 has a three-part, preferably cylindrical body, which more preferably has a constant diameter over the entire length (x direction) of the hinge 13. As in Fig. 1 can be seen, the hinge 13 is self-supporting and rotatably couples the front window 14 to the upper part 12. The upper part 12 and the front window 14 are connected to the hinge 13 via adjustable non-positive clamping connections. The fact that the clamping force is adjustable makes assembly of the weighing hood 1 significantly easier.
  • At least one light source which preferably comprises at least one LED strip, which preferably extends over at least 75% of the width or length (x direction) of the hinge 13.
  • Two LED strips are preferably provided, the color temperature of which can be mixed and, depending on the requirements, have a different Kelvin number (color temperature).
  • one of the LED strips has a color temperature of 3000K, while the other LED strip has a color temperature of 6000K.
  • Such defined color temperatures are required, for example, for color detection of drug substances.
  • the color of the drug substance to be weighed is compared with a calibrated color card at a defined light temperature and the color of the drug substance is thus determined.
  • the light source or preferably at least one LED strip is encapsulated in a translucent protective cover, which is preferably made of plastic.
  • a translucent protective cover which is preferably made of plastic.
  • this provides chemical protection against aggressive substances that are handled in the work area 19. But cleaning and decontamination of the work area 19 is also made easier because the risk of a short circuit in the light source that is under electrical voltage is avoided.
  • a preferred rotation brake included in the hinge.
  • several rotation brakes can also be provided.
  • Such a rotation brake ensures that an opened windshield 14 can move back into the closed position independently and braked and does not simply fall down, which can lead to possible damage or injuries to the operating personnel.
  • an angle limiter which limits the opening angle of the windshield 14 upwards and thus determines the maximum open position of the windshield 14.
  • This angle limiter is similar to a stop and is preferably set so that the maximum open position of the windshield 14 is the one in which the windshield 14 can remain in an unstable equilibrium.
  • a lock (not shown) can also be provided, which locks the windshield 14 in the maximum open position.
  • the worktop rests on a resilient element and has no direct contact with any component of the carrier 30, the rear wall 16 and the armrest 32.
  • the worktop is therefore 20 completely shock and vibration decoupled, so that any contact by the laboratory employee with a component of the weighing hood, for example with the armrest 40 and the front window 14, has no influence on any weighing results. Even vibrations that may be caused by the fan 70 and continue via the exhaust air filter system 60 and the rear wall 16 are therefore not transmitted to the worktop 20. Likewise, the worktop 20 is decoupled from any building vibrations.
  • the worktop 20 can be completely protected from such building vibrations by selecting a resilient element with a lower damping constant, for example a gas spring be decoupled from shocks and vibrations.
  • a gas spring can also be adjusted so that it sufficiently absorbs other types of vibrations.
  • FIG. 3 A node profile or corner profile 50 is shown in a perspective view, by means of which the armrest 40, one of the side walls 15 and the carrier 30, preferably here the support leg 31, are connected to one another.
  • the directional information given below refers to a corner profile in the area of the front left corner area of the weighing hood 1.
  • the corner profile 50 has a base section 51, from which a projection 53 extends downward in the z direction, the dimension of which is in turn selected so that it can be fitted into the supporting leg 31 designed as a hollow profile.
  • the corner profile 50 has a slot-shaped recess 54 running in the z direction, the depth (y direction) of which is selected so that it is suitable for the positive reception and stable holding of the side wall 15 is sufficient.
  • a peg-shaped projection 55 extends in the x direction from the upper end section of the corner profile 50, the dimensions and cross section of which are selected so that it can be fitted into the wing-shaped armrest 40, which is designed as a hollow profile.
  • the flow-optimized airfoil profile of the armrest 40 is clearly in Fig. 3 to recognize.
  • the surface of the armrest 40 facing the working opening 11 is flow-optimized and convex.
  • the upward (z-direction) surface 52 of the corner profile 50 has a corresponding flow-optimized and convex contour. This ensures a flush, step-free transition between the surface 52 of the corner profile 50 and the surface of the armrest 40. This means that the supply air in the area of the corner profile 50 can flow through the work opening 11 into the work space 19 with little turbulence.
  • corner profiles 50 are provided both in the front left and in the front right corner area of the weighing hood 1.
  • corner profiles 50 not only simplify the assembly of the weighing hood 1, but they also offer advantages with regard to the required regular cleaning and decontamination of the weighing hood 1, since there are no shoulders, hard-to-reach places or even open recesses that are difficult to clean .
  • corner profiles 50 designed in this way ensure a low-turbulence flow of room air into the work space 19 in the area of the corner profiles 50.
  • a control and/or display panel 42 can be seen, which is completely integrated into the armrest 40.
  • the control and/or display panel 42 is installed flush with the surface and protected from liquid in the armrest 40. Any electrical lines that supply the control and/or display panel 42 with power, or any data lines, can run completely within the armrest 40. They are therefore neither visible from the outside nor do they make cleaning the weighing hood more difficult.
  • the display and/or control panel 42 can preferably only have display elements on which various operating functions of the weighing hood 1 are displayed. However, it can also be a combined field of control and display elements 42, via which various functions of the weighing extractor can also be operated. An acoustic or visual warning signal can also be output via field 42.
  • the display and control panel 42 includes five illuminated capacitive touch panels and an acoustic warning sounder.
  • all operating states of the weighing hood can be displayed and switched in an ergonomically convenient way.
  • the laboratory employee who is usually sitting in front of the weighing hood 1, can therefore preferably operate all functions of the weighing hood via the field 42 and also have them displayed there, without having to change his sitting position significantly or even have to get up.
  • the touch fields preferably include, for example, "weighing extractor on/off”, “light on/off”, color temperature 3000K/4500K/6000K", “alarm”, “filter change”, "ionization on/off” .
  • Fig. 4 a cross section perpendicular to the x-direction is shown through the corner profile 50, the armrest 40, an inflow profile 102, an ionization electrode 100 and the worktop 20.
  • the armrest 40 is also shown hatched over the entire surface, although it is preferably hollow-shaped.
  • an inflow profile 102 is arranged on the front edge of the worktop 20, which, like the armrest 40, is designed to optimize flow in the manner of a wing.
  • the inflow profile 102 is completely decoupled from the worktop 20.
  • the inflow profile 102 has a recess 104, which is preferably almost rectangular in cross section, into which an ionization electrode 100 is preferably releasably inserted.
  • the surface of the ionization electrode 100 is designed to be flush with the flow-optimized surface of the inflow profile 102.
  • the ionization electrode 100 is preferably inserted in a form-fitting manner into the inflow profile 102 and can therefore be removed from it again without tools.
  • Fig. 4 It can also be seen that the armrest 40 is arranged above the inflow profile 102.
  • the clear distance between the armrest 40 and the inflow profile 102 allows room air to be supplied into the work space 19 due to the negative pressure prevailing in the work space 19.
  • the ionization electrode 100 preferably has electrodes arranged equidistantly along its length, to which an alternating voltage is preferably applied, for example +6 kV and -6 kV. Due to the alternating voltage, the room air flowing into the working space 19 is alternately electrically charged positively and negatively, and is therefore neutralized on average.
  • the application of an alternating voltage has proven to be particularly advantageous in that the charge of the powdery particles adhering to surfaces is unknown, i.e. it is unknown whether the particles are positively or negatively charged. A direct voltage could therefore not discharge equally charged particles.
  • the incoming air, which passes through the ionization electrode 100 under alternating voltage is thus neutralized in charge over time and can discharge particles of both polarities.
  • the inflow profile 102 which can preferably also be formed in one piece with the worktop 20, is, like the armrest 40, inserted into the respectively assigned corner profile 50, preferably inserted.
  • the corner profile 50 is preferably inserted into the nearby table leg 31. Only the corner profile 50 connects the armrest 40 and the inflow profile 102.
  • Fig. 5 An ionization module is shown in a perspective view.
  • the modular structure consisting of corner profile 50, armrest 40, inflow profile 102 and ionization electrode 100 has enormous advantages in that, if for some reason an ionization electrode 100 is not necessary for special series of tests, the entire module can be removed and replaced by the in Fig. 3 Module shown can be replaced.
  • not all fume cupboards have to be permanently equipped with an ionization electrode 100, because the ionization module can be easily removed without tools and replaced with a conventional module.

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

Claims (10)

  1. Hotte de laboratoire (1), comprenant un boîtier (10), qui définit un espace de travail (19), dans laquelle le boîtier (10) comporte à son côté avant une vitre de devant (14) supportée de manière mobile, un plan de travail (20), qui délimite l'espace de travail (19) côté sol, et une électrode d'ionisation (100), qui est disposée dans un profilé d'admission (102) disposé sur le bord avant du plan de travail (20), et comprenant en outre un repose-bras (40), qui est disposé dans la zone de l'ouverture de travail (11) et à distance du profilé d'admission (102), dans laquelle le repose-bras (40) s'étend le long de sa direction longitudinale sensiblement sur toute la largeur de la hotte de laboratoire (1) et comporte des côtés frontaux, et dans laquelle une paroi latérale (15) respective qui définit latéralement l'espace de travail (19), un côté frontal respectif du repose-bras (40) et le profilé d'admission (102) sont reliés à un profilé d'angle (50) formé d'une seule pièce, et dans laquelle la paroi latérale (15), un côté frontal respectif du repose-bras (40) et le profilé d'admission (102) sont insérés dans le profilé d'angle (50).
  2. Hotte de laboratoire (1) selon la revendication 1, dans laquelle la hotte de laboratoire est une hotte de pesage (1) pour peser des substances pharmacologiquement actives ou toxiques dans un laboratoire, qui comporte, dans le cas d'une utilisation conforme, une ouverture de travail (11) toujours ouverte au-dessous de la vitre de devant (14), et dans laquelle la vitre de devant (14) est reliée de manière mobile en rotation à une partie supérieure (12) du boîtier (10), de telle sorte que la vitre de devant (14) puisse être pivotée d'une position ouverte à une position fermée.
  3. Hotte de laboratoire (1) selon la revendication 1, dans laquelle la vitre de devant (14) est une guillotine, mobile dans la direction verticale d'une position ouverte à une position fermée, qui obture, dans la position fermée, l'espace de travail (19).
  4. Hotte de laboratoire (1) selon l'une des revendications précédentes, dans laquelle l'électrode d'ionisation (100) est installée de manière détachable dans le profilé d'admission (102).
  5. Hotte de laboratoire (1) selon l'une des revendications précédentes, dans laquelle l'électrode d'ionisation (100) est montable sans outil dans le profilé d'admission (102).
  6. Hotte de laboratoire (1) selon l'une des revendications précédentes, dans laquelle le profilé d'admission (102) s'étend sur la largeur du plan de travail (20).
  7. Hotte de laboratoire (1) selon l'une des revendications précédentes, dans laquelle l'électrode d'ionisation (100) est installée en affleurement du profilé d'admission (102).
  8. Hotte de laboratoire (1) selon l'une des revendications précédentes, dans laquelle l'électrode d'ionisation s'étend sur au moins 75 % de la largeur du profilé d'admission (102).
  9. Hotte de laboratoire (1) selon l'une des revendications précédentes, comprenant en outre un support (30) qui porte le poids du boîtier (10), du plan de travail (20) et du repose-bras (40), dans laquelle le profilé d'angle (50) est en plus relié au support (30).
  10. Hotte de laboratoire (1) selon la revendication 9, dans laquelle le support (30) est inséré dans le profilé d'angle (50).
EP19714354.8A 2018-03-23 2019-03-22 Hotte de laboratoire Active EP3768443B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018107016.0A DE102018107016A1 (de) 2018-03-23 2018-03-23 Laborabzug
PCT/EP2019/057227 WO2019180198A1 (fr) 2018-03-23 2019-03-22 Hotte de laboratoire

Publications (2)

Publication Number Publication Date
EP3768443A1 EP3768443A1 (fr) 2021-01-27
EP3768443B1 true EP3768443B1 (fr) 2024-02-14

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19714354.8A Active EP3768443B1 (fr) 2018-03-23 2019-03-22 Hotte de laboratoire

Country Status (4)

Country Link
EP (1) EP3768443B1 (fr)
DE (1) DE102018107016A1 (fr)
ES (1) ES2973009T3 (fr)
WO (1) WO2019180198A1 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202011101114U1 (de) * 2010-11-13 2012-08-28 Waldner Laboreinrichtungen Gmbh & Co. Kg Abzugvorrichtung
DE102015103768B4 (de) * 2015-03-15 2020-10-22 Waldner Ag Wägeabzug
DE102015103772B4 (de) * 2015-03-15 2020-10-22 Waldner Ag Wägeabzug
DE102015109310A1 (de) * 2015-06-11 2016-12-15 Waldner Laboreinrichtungen Gmbh & Co. Kg Profilanordnung als Bestandteil einer Abzugsvorrichtung

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Publication number Publication date
EP3768443A1 (fr) 2021-01-27
ES2973009T3 (es) 2024-06-17
DE102018107016A1 (de) 2019-09-26
WO2019180198A1 (fr) 2019-09-26

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