EP2704833A1 - Cabinet, in particular safety cabinet or cabinet for hazardous materials - Google Patents
Cabinet, in particular safety cabinet or cabinet for hazardous materialsInfo
- Publication number
- EP2704833A1 EP2704833A1 EP12719656.6A EP12719656A EP2704833A1 EP 2704833 A1 EP2704833 A1 EP 2704833A1 EP 12719656 A EP12719656 A EP 12719656A EP 2704833 A1 EP2704833 A1 EP 2704833A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- air
- cabinet
- guide unit
- air guide
- unit
- 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.)
- Granted
Links
- 239000000383 hazardous chemical Substances 0.000 title claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 231100001261 hazardous Toxicity 0.000 claims description 3
- 239000000126 substance Substances 0.000 description 9
- 230000033228 biological regulation Effects 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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
-
- 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
- B01L1/50—Enclosures; Chambers for storing hazardous materials in the laboratory, e.g. cupboards, waste containers
-
- 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
-
- 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
- B01L2200/082—Handling hazardous material
-
- 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
- B01L2200/14—Process control and prevention of errors
- B01L2200/143—Quality control, feedback systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
- B01L2400/00—Moving or stopping fluids
- B01L2400/04—Moving fluids with specific forces or mechanical means
Definitions
- the invention relates to a cabinet, in particular safety cabinet or hazardous substance cabinet, for storing preferably liquid hazardous substances, with a cabinet body and at least one closes an access opening in the cabinet carcass cabinet door, and with an air guide unit for generating an air curtain in the region of the access opening.
- Safety cabinets or hazardous substance cabinets are typically used in practice to store chemicals or other, mostly liquid, hazardous goods.
- the dangerous goods in question in bottles, canisters etc. are stored in the respective cabinet.
- This is usually equipped with a specific and predetermined fire resistance, which corresponds for example to a fire resistance of 60 minutes or 90 minutes. In this way, any fire, explosions, etc. are avoided especially in the event of fire. This has proven itself in principle.
- a local extract is equipped with at least one suction opening, which communicates with a suction device.
- several suction openings are provided on the front side of the extract, which form an exhaust air curtain. In this way, any hazardous substances which flow through the drawer and which are usually heavier than running can be effectively extracted from the interior of the drawer by means of the suction openings.
- DE 295 17 454 U1 deals with a cabinet-like work station, which is equipped with an air supply and an air extraction.
- the air supply extends over the entire or almost the entire width of the workplace, namely slit-shaped.
- the air extraction is arranged on a rear wall. To cover the air extraction workplace serves a baffle element.
- the prior art has proven itself in principle, but is in need of improvement in terms of the design of the air curtain. Because in the context of the generic DE 20 2010 004 036 U1 the air curtain is limited to a relatively small volume or a small (partial) area within the access opening. As a result, the energy for generating the air curtain is manageable. However, if you want to work with a volume and also in terms of area much larger air curtain, for example, one which covers the entire access opening in the cabinet body completely or at least for the most part, the energy consumption is immense. This is no longer acceptable against the background of constantly rising energy prices and especially with a view to future-oriented solutions. The invention aims to remedy this situation. The invention is based on the technical problem of further developing such a cabinet and, in particular, safety cabinet or hazardous substance cabinet so that a large-scale air curtain can be produced, taking into account an energy-optimized design.
- a generic cabinet, especially safety cabinet or hazardous materials cabinet, in the context of the invention is characterized in that the air guide unit is variable with respect to the amount of air delivered.
- variable design of the air guide unit with respect to the amount of air delivered opens the possibility, for example, completely switch off the air guide unit when the air curtain generated by the air guide unit is not needed. This is typically the case when the access opening acted upon by the air curtain is closed in the cabinet body with the aid of the cabinet door. Likewise, you will shut off the air handling unit, for example, when an air curtain is not needed at all, because no vaporous hazardous substances arise or can escape via the access opening to the outside of the cabinet body. That is, it is possible to couple the air guide unit, for example, the formation of steam.
- the invention usually works in such a way that the air guide unit is acted upon in accordance with a control unit.
- This operating unit is advantageously a door drive, a media dispensing unit, etc.
- the air guide unit is acted upon accordingly. This can be done in such a way that the air guide unit is designed to be controllable.
- the Operating unit thus ensures that the air guide unit is also acted upon.
- the operating unit thus controls the air guide unit in the example case. It is also particularly preferred if the air guide unit is designed to be adjustable.
- the air guide unit may again be controlled by the operating unit with regard to their function. If, for example, the operating unit is acted upon, it also ensures that the air-guiding unit is switched on. If the loading of the operating unit ends, this may correspond to the fact that the air-guiding unit is switched off at the same time.
- the operating unit can specify the amount of air delivered by the air-guiding unit. If the operating unit is, for example, a media dispensing unit, then depending on the amount of dispensed medium and / or the type of dispensed medium, the conveyed air quantity in the air guiding unit can be predefined accordingly.
- the air guide unit in accordance with the control unit, in the sense of a control respectively a scheme.
- the amount of air to be delivered is specified and maintained in the sense of a regulation.
- management unit by means of which the amount of air supplied is regulated.
- the air curtain ensures that, for example, dangerous vapors generated inside the cabinet body can not reach out beyond the access opening. Rather, these vapors are retained with the help of the air curtain inside the cabinet body, from where they are discharged via a mostly mandatory suction line including suction unit. This minimizes the risk potential for any operators.
- the air curtain is actually only in operation when it is needed, the energy consumption for generating the air curtain in question also decreases.
- the controllable or controllable design of the air-guiding unit finally takes into account the amount of vaporous hazardous substances that arise and / or their potential for danger. Here are the main benefits.
- the air guide unit is acted upon by means of a supply / exhaust air generation unit.
- This supply air generation unit may be a compressed air generator.
- This compressed air generator is provided in the simplest case as a simple compressed air line inside the cabinet body, by means of which, for example, the compressed air-assisted door drive and / or the compressed air-assisted media delivery unit are operated. Such a compressed air connection or a compressed air supply is already present in many safety cabinets.
- this compressed air unit or air supply generating unit is now used not only for operating the operating unit, but also for the admission of the air guiding unit.
- the operating unit and the air guide unit can be acted upon together with compressed air. So you will proceed regularly when a media dispensing unit is provided inside the cabinet body. Because this media dispensing unit usually has a compressed air driven diaphragm pump. As soon as the media delivery is started, the compressed air driven diaphragm pump starts up.
- the start of the compressed air operated diaphragm pump according to the invention also ensures that the air guide unit is also acted upon and generated as a result thereof the desired air curtain with the described positive effects. That is, the air guide unit is acted upon in accordance with the control unit, in the example exactly when the media dispensing unit is operated to dispense media and in this context, the questionable and withheld vapors arise (can).
- the air-guiding unit is designed as a tubular element with air inlet / outlet openings arranged in the region of the inlet opening. It has proven useful if several of these Gutzu- / Austhttsö réelleen are provided in the longitudinal extension of the tubular element. Because the air guidance unit typically has a length adapted to the width of the access opening, it is ensured that the air inlet / outlet openings, which are generally distributed regularly over the entire length of the air guidance unit, generate an air curtain extending over the entire width of the access opening , Depending on the through the air duct unit
- this air curtain extends not only over the entire width of the air inlet opening, but usually over the entire length or mostly the entire length of the air inlet opening. In this way, the air curtain thus produced ensures that practically at any point of the access opening any harmful vapors can leave the interior of the cabinet body. Rather, the vapors in question are held virtually inside the cabinet body respectively reflect - if you will - on the air curtain and are deflected back at a possible exit into the interior of the air curtain.
- the air guide unit is placed on the head side of the cabinet body in the access opening.
- air outlet openings are provided. These air outlet openings are all the same direction formed on the tubular element and point in the example described in the direction of a foot of the cabinet body. That is, the conveyed through the air guide unit air exits from the respective air outlet openings on the head side of the cabinet body and flows in the direction of the foot of the cabinet body. Since the air guide unit typically extends over the entire width of the access opening, the desired air curtain is generated in this way, which covers virtually the entire access opening in its width and length.
- any area of the access opening above the air guide unit is generally closed with a cover element to the outside.
- the cover extends within the access opening.
- the air guide unit is connected to the cover element in question in the access opening. It has proven useful to connect the air duct unit variable in height to the provided in the head region of the cabinet body cover.
- the cover element in question extends from a head of the cabinet body practically to the air guide unit, so that the cover element in combination with the air curtain generated by the air guide unit closes the access opening as described in total.
- the cover member may be transparent to allow an operator unobstructed insight into the interior of the cabinet body.
- typically (thermoplastic) transparent plastics have proved favorable.
- FIG. 1 shows a cabinet according to the invention in a perspective overview
- Fig. 2 is a schematic longitudinal section through the cabinet of Figure 1 and
- FIG. 3 the cabinet according to Figures 1 and 2 in the air duct unit in perspective.
- FIG. 1 shows a cabinet is shown, which in the exemplary embodiment is a safety cabinet or hazardous materials cabinet and which serves for the storage of chemicals 1 only shown there.
- a cabinet body which in the exemplary embodiment is a safety cabinet or hazardous materials cabinet and which serves for the storage of chemicals 1 only shown there.
- 2 hinged doors 3 are struck on a cabinet body. In principle, of course, you can only work with a single swing door 3, which is not shown.
- the hinged doors 3 can be opened and closed synchronously by an operator with one hand (single-handed operation) or operated separately with two hands (two-hand operation).
- the cabinet body 2 is equipped with side walls 2a and a top or top wall 2b, a bottom wall 2c and finally a rear wall 2d.
- the swing doors 3 are each connected to vertical axis 4 rotatably connected to the cabinet body 2. Both swing doors 3 are connected in the exemplary embodiment and not restricting to a common connecting element 5 or respective connecting elements 5.
- the connecting element 5 or the two connecting elements 5 undergo an arrangement in the region of the top wall 2b.
- the only connecting element 5 in the exemplary embodiment operates via push rods 6 on the respectively connected swing door 3.
- the not shown and compressed air driven door drive in turn may act on the connecting element 5.
- a media delivery unit 7 is realized, which finds an arrangement above an excerpt 8.
- the media delivery unit 7 is equipped with a delivery element 9, which is or can be a tap 9.
- a lever 10 is still realized, the application causes the delivery of the medium.
- a canister not shown, is placed under the media delivery element or the tap 9 and filled as soon as an operator acts on the lever 10.
- a pump 1 1 is driven, which is placed below the extract 8.
- the pump 1 1 communicates with a dip tube 12, which extends into a barrel or chemical drum 13 and from there, the desired chemical promotes towards the media delivery unit 7, as soon as the lever 6 is acted upon.
- the air-guiding unit 15 is designed as a tubular element 15 and has a length L, which is the width B of the rectangular Access opening 14 corresponds in the example case.
- the air guide unit 15 or the cylindrical tube element 15 is equipped with a plurality of air outlet openings 16, which can be seen in FIG. In principle, it may also be at this point to air inlet openings 16, which is not shown. Because in the example, the air guide unit or the cylindrical tube member 15 is acted upon via a feed line 17 and a thus communicating air supply generating unit 17 with compressed air. At said supply line or air supply unit 17 for compressed air and the pump 1 1 is connected.
- the air guide unit 15 is now variably formed within the scope of the invention with regard to the amount of air conveyed by it.
- the air guide unit 15 is acted upon by the supply line 17 with compressed air, wherein the compressed air is controlled or regulated.
- the operating unit 7 is the media dispensing unit 7.
- the design is the same
- the air guide unit 15 undergoes pressurized air.
- the air leaving the individual air outlet openings 16 produces the air curtain 18 indicated in the figures. Since the air outlet openings 16 are arranged distributed over the entire longitudinal extension of the air duct unit 15 designed as a tubular element 15, in a regular arrangement, the air curtain 18 in question extends over the entire width B of the access opening 14.
- the individual air outlet openings 16 are each directed the same direction formed on the tubular element 15 and point in the example shown in the direction of the bottom wall 2c of the cabinet body second
- an air curtain 18 is formed in this way, which not only extends over the entire width B of the access opening 14, but also starts from the air guiding unit 15 extends to the bottom wall 2c of the cabinet body 2.
- An additionally provided in the head region of the cabinet body 2 cover 19 ensures that the area above the air guide unit 15 of the access opening 14 up to the top wall 2b undergoes an additional cover.
- the air guide unit 15 is connected to the questionable and transparently designed cover 9. In this case, the air guide unit 15 variable in height with the questionable and in the head area
- the cabinet body 2 provided cover 19 are connected as needed.
- the air curtain 18 can be somewhat varied in its extent and size.
- the amount of air delivered by the air guide unit 15 can be varied, as already described. This is typically done in accordance with the operating unit 7.
- the design is such that only when an act of the lever 10, the diaphragm pump 1 1 starts and the chemical contained in the reservoir 13 is discharged via the tap 9 to the outside.
- the loading of the lever 10 ensures that the air guide unit 15 is also supplied with the compressed air via the supply line 17 and the air curtain 18 is generated in the access opening 14.
- any vapors produced during dispensing of the chemical via the tap 9 can not escape to the outside via the access opening 14.
- one or several suction openings 20 in conjunction with a suction unit 21 may ensure that the vapors in question are removed (see FIG. 2). That is, even with open swing doors 3, an admission of the media delivery unit 7 does not cause that this resulting and potentially hazardous vapors reach beyond the air curtain 18 and of course outside the cabinet body 2 located operator at all. As a result, maximum protection of the operating personnel is achieved, in particular against vaporous hazardous substances.
- the air guide unit 15 is actuated with the aid of the operating unit 7. In this case, the air guide unit 15 in total as well
- a certain position of the lever 10 may correspond to a predetermined amount of air, which is conveyed through the air guide unit 15. That is, the pivotal position of the lever 10 in the example case, as indicated by dash-dotted lines in FIG. 2 and corresponding to a specific pivoting angle ⁇ , predefines the delivered air quantity through the air-guiding unit 15.
- a can now be varied in question conveyed air volume, in the sense of a scheme.
- the respectively conveyed air quantity in the supply line 17 is detected and monitored by means of a sensor, not shown, for example an air flow meter.
- each pivoting angle a of the lever 10 in the example case corresponds to a certain predetermined amount of air which is conveyed by the air ducting to 1.5 g and, in particular, via the corresponding sensor in the supply line 17 in the sense of a regulation and is complied with.
- the air curtain 18 produced can be adapted, inter alia, to the actual expected amount of vaporous hazardous substances. Because the greater the pivoting angle a of the lever 10, the more steam is generated during the filling of the chemical in question via the tap 9 as a rule. This fact, the invention takes account of the fact that the guided through the air guide unit 5 and the air curtain 18 generating air quantity is increased accordingly. In any case, there is a control or regulation of the amount of air conveyed by the air guide unit 5.
Landscapes
- Health & Medical Sciences (AREA)
- Clinical Laboratory Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ventilation (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12719656T PL2704833T3 (en) | 2011-05-05 | 2012-04-30 | Cabinet, in particular safety cabinet or cabinet for hazardous materials |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202011100301U DE202011100301U1 (en) | 2011-05-05 | 2011-05-05 | Cabinet, in particular safety cabinet or hazardous substance cabinet |
PCT/EP2012/057920 WO2012150217A1 (en) | 2011-05-05 | 2012-04-30 | Cabinet, in particular safety cabinet or cabinet for hazardous materials |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2704833A1 true EP2704833A1 (en) | 2014-03-12 |
EP2704833B1 EP2704833B1 (en) | 2017-06-28 |
Family
ID=44974253
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12719656.6A Active EP2704833B1 (en) | 2011-05-05 | 2012-04-30 | Cabinet, in particular safety cabinet or cabinet for hazardous materials |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2704833B1 (en) |
DE (1) | DE202011100301U1 (en) |
ES (1) | ES2639915T3 (en) |
PL (1) | PL2704833T3 (en) |
WO (1) | WO2012150217A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015101603A1 (en) * | 2015-02-04 | 2016-08-04 | Düperthal Sicherheitstechnik Gmbh & Co. Kg | Method and device for controlling the amount of air supplied to or discharged from a safety cabinet |
DE202015100532U1 (en) | 2015-02-04 | 2015-02-26 | Düperthal Sicherheitstechnik Gmbh & Co. Kg | safety cabinet |
DE202018103446U1 (en) | 2018-06-19 | 2018-06-25 | Düperthal Sicherheitstechnik Gmbh & Co. Kg | safety cabinet |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4116500A1 (en) | 1991-05-21 | 1992-11-26 | Binder Wtb Labortech Gmbh | LABORATORY HOT CUPBOARD |
NO178391C (en) * | 1993-08-25 | 1996-03-20 | Aspo As | Solvent storage cabinets, flammable liquids and the like. |
DE4419268A1 (en) * | 1994-06-01 | 1995-12-07 | Waldner Laboreinrichtungen | Fume cupboard which may be fully opened in safety |
DE29517454U1 (en) | 1995-11-06 | 1996-01-04 | MSG GmbH, 63825 Schöllkrippen | Workplace |
US7318771B2 (en) * | 2005-07-19 | 2008-01-15 | Institute Of Occupational Safety And Health, Council Of Labor Affairs | Air-isolator fume hood |
DE202010004036U1 (en) | 2010-03-22 | 2010-07-08 | Düperthal Sicherheitstechnik GmbH & Co. | Cabinet, in particular safety cabinet |
-
2011
- 2011-05-05 DE DE202011100301U patent/DE202011100301U1/en not_active Expired - Lifetime
-
2012
- 2012-04-30 EP EP12719656.6A patent/EP2704833B1/en active Active
- 2012-04-30 PL PL12719656T patent/PL2704833T3/en unknown
- 2012-04-30 ES ES12719656.6T patent/ES2639915T3/en active Active
- 2012-04-30 WO PCT/EP2012/057920 patent/WO2012150217A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012150217A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2639915T3 (en) | 2017-10-30 |
EP2704833B1 (en) | 2017-06-28 |
WO2012150217A1 (en) | 2012-11-08 |
PL2704833T3 (en) | 2017-12-29 |
DE202011100301U1 (en) | 2011-10-20 |
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