WO2016146314A1 - Wägeabzug - Google Patents
Wägeabzug Download PDFInfo
- Publication number
- WO2016146314A1 WO2016146314A1 PCT/EP2016/053115 EP2016053115W WO2016146314A1 WO 2016146314 A1 WO2016146314 A1 WO 2016146314A1 EP 2016053115 W EP2016053115 W EP 2016053115W WO 2016146314 A1 WO2016146314 A1 WO 2016146314A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weighing
- armrest
- control panel
- working
- working space
- Prior art date
Links
- 238000005303 weighing Methods 0.000 title claims abstract description 80
- 231100000614 poison Toxicity 0.000 claims abstract description 6
- 239000003440 toxic substance Substances 0.000 claims abstract description 6
- 239000013543 active substance Substances 0.000 claims abstract description 4
- 239000003570 air Substances 0.000 description 50
- 239000002699 waste material Substances 0.000 description 13
- 239000000126 substance Substances 0.000 description 12
- 239000011324 bead Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000012080 ambient air Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 210000000245 forearm Anatomy 0.000 description 4
- 239000003517 fume Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 229920003023 plastic Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 229940088679 drug related substance Drugs 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000005202 decontamination Methods 0.000 description 2
- 230000003588 decontaminative effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 2
- 239000004926 polymethyl methacrylate Substances 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- 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
- B01L1/52—Transportable laboratories; Field kits
-
- 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F7/00—Ventilation
- F24F7/04—Ventilation with ducting systems, e.g. by double walls; with natural circulation
- F24F7/06—Ventilation with ducting systems, e.g. by double walls; with natural circulation with forced air circulation, e.g. by fan positioning of a ventilator in or against a conduit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/52—Weighing apparatus combined with other objects, e.g. furniture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/28—Frames, Housings
- G01G21/286—Frames, Housings with windshields
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/30—Means for preventing contamination by dust
-
- 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
- B01L2200/08—Ergonomic or safety aspects of handling devices
- B01L2200/087—Ergonomic aspects
-
- 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
- B01L2200/141—Preventing contamination, tampering
-
- 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
- B01L2400/0475—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure
- B01L2400/0487—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics
- B01L2400/049—Moving fluids with specific forces or mechanical means specific mechanical means and fluid pressure fluid pressure, pneumatics vacuum
Definitions
- the present invention relates to a weighing tray for weighing pharmaceutically active or toxic substances in a laboratory.
- laboratory workers are protected by weighing systems that have a ventilated working space accessible from the front for the laboratory worker via a working opening.
- the laboratory worker inserts his forearms into the working space, usually placing them on an armrest, thus handling the laboratory utensils and substances on the worktop.
- Such utensils include the high-resolution laboratory balances already mentioned above, but also containers in which the various substances to be portioned are located, and other tools such as a spatula to retrieve the substances from the container and place them in a weighing boat on the laboratory balance. After weighing the substances, these are optionally transferred to another container.
- a disadvantage of conventional weighing devices is that external influences, such as For example, air turbulence or mechanical vibrations, which may influence the extremely high-resolution scales and thus the weighing results.
- external influences such as For example, air turbulence or mechanical vibrations, which may influence the extremely high-resolution scales and thus the weighing results.
- the recirculation mode operated weighing fume hoods ie those that are not connected to a building-side exhaust system, but rather have its own filter system and its own fan that sucks the air from the work space, passes through the filter system and the purified air in the laboratory blown in again often have the disadvantage that vibrations of the fan can influence the weighing results.
- the weighing results are therefore not necessarily stable and reproducible.
- a weighing feeder for weighing pharmaceutically active or toxic substances in a laboratory comprises a housing which defines a working space, wherein a front side te of the housing has a normal use of the weighing always open work opening, a worktop that limits the working space bottom side, and an armrest, which is arranged on a front edge of the worktop in the working opening, with a control panel is integrated in the armrest, so in that a surface of the armrest facing away from the worktop is flush with a surface of the control panel.
- the surface of the armrest and the surface of the control panel are designed flow optimized.
- a Zu Kunststoffspalt is provided between the armrest and the worktop, through which room air can flow into the working space during operation of the trigger due to the pressure prevailing in the working space.
- the armrest extends substantially over the entire width of the weighing tray and has end faces which are each connected to a corner profile which is connected to a side wall of the housing.
- control panel is arranged adjacent to a corner profile.
- control panel is designed such that operating functions of the trigger can be operated via it.
- control panel also includes a display panel, wherein on the display panel different operating states of the weighing deduction can be displayed.
- Fig. 1 is a front perspective view of a weighing tray according to the invention
- Fig. 2 is a sectional view taken along in FIG. 1 illustrated section line A-A;
- Fig. 3 is a sectional view of the working space located inside the housing
- Fig. Figure 4 is a plan view and two sectional views along the illustrated section lines A-A and B-B of the hinge;
- Fig. 5 a sectional view of the worktop in the region of the baffle wall
- Fig. 6 is a sectional view of the worktop in the region of a side wall
- Fig. 7 is a perspective view of a corner profile
- Fig. 8 is a sectional view of the exhaust air circulating filter system
- Fig. 9 is an exploded perspective view of the embodiment shown in FIG. 8 Ab povertynd shown. Recirculating air filter system.
- a Cartesian coordinate system has been drawn in some of the figures.
- the x direction refers to the width extension, the y direction to the depth extension and the z direction to the height extent of the weighing withdrawal.
- An isolator or containment system is a closed trigger, the front of which does not have an always open working opening, but at the front two openings are provided, which are sealed inside inside the working space by means of two mostly made of rubber gloves. The laboratory worker grabs his hands through the openings, so to speak, and immediately slips over his work gloves.
- the weighing trigger described here is open because it has an always open working opening.
- the weighing tray 1 illustrated in FIG. 1 preferably comprises essentially the following components: a housing 10, a work surface 20, a carrier 30, an arm rest 40, a filter system 60, a ventilator 70 and an outlet 90, which preferably has a hose 80 with the fan 70 is connected.
- the carrier 30, which is preferably designed as a table frame, comprises in the embodiment shown here four legs 31, whose bottom end is each end provided with a leveling not described in detail. This leveling is advantageous if the floor on which the weighing tray 1 is placed has any unevenness, so that with the help of one or more leveling a shaking of the entire trigger 1 can be avoided.
- FIGS. 6 is stored on the carrier 30 a worktop 20. This can be achieved by a 3-point storage or, as shown in the figures, by a 4-point storage.
- the carrier 30 carries the weight of the housing 10, the worktop 20 and the armrest 40.
- the carrier 30 preferably additionally carries the weight of the exhaust air or circulating air filter system 60 as well as the fan 70 and the hose 80.
- the housing 10, which defines a working space 19, comprises on the rear side of the working space 19 a double-walled 16a, 16b running baffle 16.
- a cavity 16c (FIG. 2), through which the exhaust air in the direction of the exhaust air filter system 60th to be led.
- the housing 10 has as a lateral boundary on two side walls 15 and on the front and top, a top 12 and a hinged front glass 14.
- the side walls 15, which can also serve as a side cover the baffle 16, and the upper part 12 are fixed connected to the baffle 16 (16 a or 16 b), while the front screen 14 is pivotally or rotatably connected by a hinge 13 with the upper part 12.
- the windscreen 14 is shown in the closed position.
- any utensils required in the weighing tray can be introduced into the working space 19 and placed on the worktop 20.
- utensils include, for example, high-resolution laboratory carts, containers in which substances to be weighed are contained, as well as other containers into which an already weighed substance is finally transferred.
- smaller items such as work gloves, spatulas, weighing boats, and the like are normally used in such weigh-ins.
- a work opening 11, which is always open during the intended use of the weighing trigger 1, is arranged below the pivotable windshield 14, a work opening 11, which is always open during the intended use of the weighing trigger 1, is arranged.
- the laboratory worker is in a sitting position in front of the weighing tray 1, wherein the sitting position is set so that the work opening 11 is equal to the still slightly angled forearms of the laboratory worker and this ergonomic in the working space 19 can do his work.
- the side walls 15 and the upper part 12 are preferably transparent.
- the front panel 14, the upper part 12 and the side walls 15 are made of acrylic glass.
- the front pane 14, as shown in FIG. 2 can be seen, convexly curved.
- the radius of curvature is constant, so that the contour of the front screen 14 corresponds to a circle segment.
- the upper part 12 is also convexly curved.
- the radius of curvature of the front Disc 14 the radius of curvature of the upper part 12th
- the lower edge of the windshield 14 has a bead which is preferably round in cross section (Y direction).
- This bead is in closed windshield 14 on a relative to the side wall 15 enlarged and arranged at the front edge bead-like vertical column 17 of the same diameter, which has a convex recess at its upper end, in which the bead of the windscreen 14 comes to rest.
- the convex curvature of the bead at the lower edge of the windscreen 14 corresponds to the curvature of the concave recess at the upper end of the bead 17 of the side wall 15.
- an armrest 40 which could also be referred to as inflow with combined Armauflagefunktion, provided on the laboratory worker can hang up his forearms during his work, so he can perform his work as fatigueless and with a steady hand.
- the armrest 40 extends almost over the entire width (x-direction) of the working space 19.
- a control and / or display panel 42 through which the laboratory worker can operate important functions of the weighing trigger 1 and / or indicates the laboratory workers important operating conditions of the weighing 1.
- Fig. 1 is difficult to see an air passage between the underside of the armrest 40 and the worktop 20 is provided. Due to this air access, room air or ambient air can flow into the working space 19 due to the negative pressure prevailing in the working space 19.
- room air or ambient air can flow into the working space 19 due to the negative pressure prevailing in the working space 19.
- the baffle 16 in which slot-shaped openings (not shown) becomes . So it will be ground air jets along the worktop 20th produced, which help in the removal of heavy gases or aerosols in the worktop 20.
- the fan 70 described later must apply less suction power in order to generate the same amount of recirculated air (or exhaust air quantity in the case of a weighing outlet operated in exhaust air mode).
- the front edge of the worktop 20 is flow-optimized and convex.
- the armrest 40 is designed on its bottom side facing the work surface 20 and at its upper side facing the working opening 11 to optimize flow.
- the cross-sectional profile of the armrest 40 corresponds to an airfoil profile.
- FIG. 1 also shows a disposal system integrated in the worktop 20, which is shown in FIG. 1 and Fig. 2 is indicated only by means of a cylindrical neck 21.
- a flush to the working space 19 with the work surface 20 and downwardly in the direction of the support 30 outstanding connection piece 21 is integrated into the worktop 20.
- the downwardly projecting connecting piece 21 is provided on its outer contour with a plurality of annular grooves which serve for the attachment of waste bags (not visible in the figures) made of plastic by means of O-rings.
- the garbage bags can be designed as individual bags with closed bottom or as a continuous liner. During the change process, the garbage bags are sealed twice with a crimping tool or another tool, so that the waste materials, which can sometimes also contain vapors and aerosols, can neither escape from the removed garbage bag nor from the discharge interior 19.
- connecting corner profiles 50 which in relation to FIGS. 7, in each case one side wall 15 and one end of the armrest 40 with the carrier 30 or one of the legs 31.
- This profile 18 is in the mounted state on the underlying cross member 32.
- the worktop 20 has a rim-side elevation or bead.
- This bead which is provided here without reference numerals, preferably runs around the entire circumference of the worktop and prevents accidental spillage of toxic or chemical reactions triggering liquids or powders that can not pass over the edge of the worktop 20, but rather on the worktop 20th remain.
- the worktop 20 is preferably constructed monolithically and preferably made of a technical ceramic.
- the weight of the worktop 20 is preferably (and also depending on the size) in a range of 40 kg to 60 kg.
- an elastic joint seal between the working plate 20 and the baffle 16 and between the working edge is on the edge side on both side edges as well as on the back. plate 20 and the side walls 15 are provided.
- the ambient air entering the working space 19 both through the passage of air between the armrest 40 and the work surface 20 and through the work opening 11 is introduced into the cavity by means of the fan 70 through slots (not shown) provided in the wall element 16b 16c of the baffle 16 is sucked.
- the air thus extracted passes through an opening 16d into a preferably tubular connecting flange or support element 61 (FIG. 8) and then into the filter 62.
- the exhaust air After the exhaust air has been cleaned by the filter 62, flows It passes through an opening 69 in the exhaust air filter housing 65 down in the direction of fan 70, through the hose 80 and exits through the outlet 90 in the laboratory space (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 trigger 1 can preferably be fastened to the carrier 30 or to a downwardly extending extension of the baffle 16 (FIG. 1).
- a light source which is arranged according to one aspect in the hinge 13.
- the hinge 13 which is also shown in FIG. 4, 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 shown in FIG. 1 and 3, the hinge 13 is cantilevered and rotatably couples the windshield 14 to the top 12. The top 12 and the windshield 14 are over adjustable frictional Clamps connected to the hinge 13. Because the clamping force is adjustable, the mounting of the weighing tray 1 is significantly facilitated.
- Integrated in the hinge 13 is 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.
- the stationary portion of the hinge 13 (section A-A) has a recess 13a, in which the upper part 12 is frictionally received.
- the rotatable portion of the hinge 13 (section B-B), however, has two recesses, on the one hand, the recess 13b for frictionally receiving the front screen 14 and the recess 13c for receiving the light source.
- two LED bands are provided in the recess 13c, the color temperature of which may be mixed and, depending on the requirement, a different Kelvin number (color temperature).
- one of the LED bands has a color temperature of 3000 K, while the other LED band has a color temperature of 6000 K.
- Such defined light temperatures are required, for example, in the color detection of drug substances.
- the color of the drug substance to be weighed is compared with a calibrated color chart at a defined light temperature to determine the color of the drug substance.
- the light source or preferably at least one LED strip is encapsulated in a light-transmitting protective tube, which is preferably made of plastic.
- a light-transmitting protective tube which is preferably made of plastic.
- a preferred rotary brake contained in the hinge.
- a plurality of rotational brakes may be provided.
- a rotation brake causes an open windscreen 14 independently and brakes can move back to the closed position and not just fall down, which can lead to any damage or injury to the operator.
- an angle limiter which limits the opening angle of the front screen 14 upwards and thus determines the maximum open position of the front screen 14.
- This angle limiter is similar to a stop and is preferably adjusted 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 detent (not shown) may be provided, which locks the front screen 14 in the maximum open position.
- Fig. 5 is a sectional view of the work surface 20 in the region of the double-walled baffle 16 having two spaced-apart walls 16a, 16b defining an exhaust duct 16c therebetween. Also visible is a section of a rear supporting leg 31 and a transverse strut 32. Another transverse strut 32 is indicated by a square-shaped double line with rounded corners, which runs perpendicular to the image plane (x-direction). A support or support or a strut 32a is connected both to the transverse strut 32 extending in the y direction and to the transverse strut 32 extending in the x direction. As a connection, a welded joint is preferably used.
- a resilient element 22 On the support 32a is a resilient element 22, preferably made of a rubber or a made of elastic plastic.
- the worktop 20 is located on the resilient element 22.
- the worktop 20 is according to another aspect such that they have no direct contact with the transverse struts 32, which are part of the carrier 30, and the wall 16b.
- Fig. 6 also shows a sectional view of the work surface 20 in the region of a transverse strut 32 extending in the x direction and of a side wall 15.
- a support or a strut 32a is shown which is connected to the transverse struts 32, which serve to stabilize the support 30. connected is.
- a welded joint is preferably used for connection.
- a portion of a side wall 15 and the profile 18 which encloses the lower end portion of the side wall 15.
- the worktop 20 also stored here on a resilient element 22, which is preferably made of rubber o- of a resilient plastic.
- the worktop 20 has also in this area according to another aspect, no direct contact with the side wall 15, the profile 18, one of the cross member 32 and the pillar 31st
- the worktop 20 rests on a resilient element 20 according to this further aspect and has no direct contact with any component of the carrier 30, the baffle 16 and the armrest 32, the worktop 20 is completely shock and vibration decoupled, so that any contact the laboratory worker with a component of the weighing deduction, for example with the armrest 40 and the front screen 14, have no effect on any weighing results. Also, vibrations that may be caused by the fan 70 and continue through the exhaust air filter system 60 and the baffle 16 are thus not on the worktop 20 transmitted. Likewise, the worktop 20 is decoupled from any building vibrations.
- a resilient element with a lower damping constant for example, a gas spring
- the worktop 20 completely of such building vibrations be shock and vibration decoupled.
- a gas spring can also be adjusted so that it absorbs other types of vibrations sufficiently.
- FIG. 7 shows a perspective view of a node profile or corner profile 50 according to a further aspect, by means of which the armrest 40, one of the side walls 15 and the carrier 30, preferably here the pillar 31, are connected to one another.
- the directions given below refer to a corner profile in the area of the front left corner area of the weighing unit 1.
- the corner profile 50 has a base portion 51, from which extends in the z-direction, a projection 53 down, the dimension is again chosen so that it can be fitted into the designed as a hollow profile pillar 31.
- the corner profile 50 has a slot-shaped recess 54 extending in the z-direction, whose depth (y-direction) is selected so that it is sufficient for the positive reception and stable mounting of the side wall 15.
- a pin-shaped projection 55 In the upper end portion of the corner profile 50, a pin-shaped projection 55 whose dimension and cross-section is chosen so that it can be fitted into the supporting surface-shaped and formed as a hollow profile armrest 40.
- the flow-optimized airfoil profile of the armrest 40 is clearly shown in FIG. 7 to recognize.
- the working opening 11 facing surface of the armrest 40 is optimized for flow and convex.
- Fig. 7 it can be seen that the upward (z-direction) directed surface 52 of the corner profile 50 is a corresponding flow-optimized and has convex contour. This ensures a flush flush connection between the surface 52 of the corner profile 50 and the surface of the armrest 40.
- the supply air in the region of the corner profile 50 can flow through the working opening 11 into the working space 19 with little turbulence.
- corner profiles 50 are provided both in the front left and in the front right corner of the weighing tray 1.
- corner profiles 50 not only simplify the assembly of the weighing tray 1, but also offer advantages in terms of the required periodic cleaning and decontamination of the weighing tray 1, since there are no paragraphs, hard to reach places or even open wells that difficult to be cleaned.
- corner profiles 50 designed in this way ensure a low-turbulence inflow of the room air into the working space 19 in the region of the corner profiles 50.
- FIG. 7 a control and / or display panel 42 according to another aspect, which is fully integrated with the armrest 40.
- the control and / or display panel 42 is flush mounted and liquid-protected in the armrest 40. Any electrical lines which supply power to the operating and / or display panel 42 or any data lines may run completely within the armrest 40. They are therefore neither visible from the outside, nor complicate the cleaning of the weighing deduction.
- the display and / or control panel 42 may preferably have only display elements on which various operating functions of the weighing tray 1 are displayed. But it can also be a combined field of control and display elements 42, via which also various functions of the weighing deduction can be operated. An audible or visual warning signal can also be output via the 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 deduction can be displayed and switched ergonomically favorable in this way.
- the laboratory worker who usually sits in front of the weighing trigger 1, can thus preferably operate all the functions of the weighing trigger via the field 42 and also display himself there without having to greatly change his sitting position or even have to get up.
- the display and / or control panel 42 comprises capacitive touch panels, an inadvertent contact of one of the touch panels with a forearm, which is usually covered by a very poorly electrically conductive garment and normally rests on the armrest 40, does not cause activation of the touch panel and thus none Changing an operating state of the weighing trigger 1.
- the touch panels include, for example, "weighing on / off”, “light on / off”, light temperature 3000K / 4500K / 6000 K ",” alarm ",” filter change ".
- FIG. 8 shows a sectional view through the exhaust air filtration system 60
- FIG. 9 illustrates the exhaust air filtration system 60 in an exploded perspective view according to another aspect.
- a connecting flange or a tubular carrier element 61 which is fed with exhaust air guided through the cavity 16c of the baffle 16, has an end section which is cone-shaped.
- the annular end face, which faces to the left in FIG. 8, is inclined with respect to an orthogonal to the tube axis.
- This inclination angle is preferably in a range of 5 ° to 45 °, more preferably in a range of 5 ° to 15 °, and further preferably, the inclination angle is 5 °.
- a filter 62 Downstream of the tubular support member 61, a filter 62 is arranged, which is mounted in a groove-shaped receptacle 68.
- This groove-shaped receptacle 68 is in turn connected to the end portion of the tubular support member 61 such that at least the unfiltered air side (preferably also the clean air side) of the filter 62 is inclined. This angle of inclination preferably corresponds to the angle of inclination of the end face of the tubular support member 61.
- Both the tubular support member 61 and the filter 62 and the groove-shaped receptacle 68 are housed in a housing 65. On the lower side of the housing 65, an opening 69 is provided, which is fluidly connected to the fan 70 (Fig. 2).
- a waste bag attachment 63 is also attached on the housing 65. This waste bag attachment 63 is used when changing the filter 62 used. Otherwise, this is covered by a detachable flap 64.
- this inclined arrangement prevents particles located on the raw air side of the filter from being changed by, for example, vibration and the constantly acting Detach gravity from the filter surface and fall through the opening 69, from where they can then pass unhindered into the laboratory.
- the vertical offset 67 which is preferably an integral part of the waste bag attachment 63, and preferably defines the exhaust air removal opening 66 through which the exhaust filter 62 must ultimately be passed.
- the exhaust-air-purifying port 66 has a height (z-direction) which is smaller than the height (z-direction) of the filter 62 as such.
- the vertical filter height that is, the actual filter height and not the height that the filter 62 has when tilted by a certain angle, is greater than the height dimension of the exhaust air extraction opening 66. Due to this difference in size, the exhaust filter must be changed when the filter is changed 62 are further pivoted to the horizontal in order to pass it through the exhaust air removal opening 66 can.
- the cover 64 is removed from the housing 65 and a waste bag (not shown) connected by means of an O-ring with the first groove 63 a. Thereafter, the laboratory worker shifts the waste bag attached to the waste bag attachment 63 to the right towards the filter, with the bag in both hands subsequently releases the filter 62 from the tubular support element 61 and moves the filter 62 to the left until the bag reaches the release position Filters 62 was turned over, so to speak, again has its normal orientation.
- a second bag outside the first bag is also attached to the waste bag attachment 63 by means of an O-ring. With the aid of the second bag, a completely contamination-free removal of the first bag from the waste bag attachment 63 is ensured. If the filter 62 has been changed in this way, a new filter 62 together with groove-shaped receptacle 68 is attached to the tubular support member 61 and then the cover 64 again connected to the housing 65 airtight.
- the filters 62 used here are preferably so-called HEPA filters of the category HEPA filters ("High Efficiency Particulate Air Filter").
- an additional filter may preferably be provided in the outlet 90.
- the safety of the entire system in the event of leakage of the in Fig. 8 and FIG. 9 (first) filter 62 caused, for example, by filter breakthrough or handling errors during filter replacement.
- a detection device 100 is accommodated in the baffle 16, as shown in FIG. 3 can be seen.
- the detection device 100 is preferably an opto-electronic detection device, more preferably a laser diode and a photodetector.
- the laser diode and the photodetector are preferably combined to form a component and are arranged such that a laser beam emitted by the laser diode causes a rotational movement.
- tion of the windshield 14, preferably of the hinge 13, can detect.
- the unit of laser diode and photodetector is active during operation of the weighing tray 1 to issue a warning signal, visual or audible, to that laboratory worker who inadvertently or even intentionally moves the windscreen 14 away from the closed position during operation of the weighing tray 1.
- a warning signal visual or audible
- the photodetector If, for some reason, the photodetector no longer receives laser light, it is concluded that the hinge 13 has rotated and the front screen 14 must therefore have been moved upwards.
- the photodetector then forwards a signal to a control device, not shown, which in turn causes the output of a warning signal, in the case of a visible and audible warning signal on the field 42 in the armrest 40.
- FIG. 1 illustrates the shock and vibration decoupled storage of the worktop 20 in the working space 19, the integration of the display and / or control panel 42 in the armrest 40, the integration of a light source in the hinge 13, the corner profile 50, the contamination-free change of Filters 62 in the exhaust filter system 60 as well as housing a laser diode / photodetector in or on the baffle 16 may be present both in combination and individually and in any permutation.
- the description of the figures is not to be understood as meaning that the weighing tray 1 must contain all aspects at the same time.
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
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Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020177029614A KR20170134488A (ko) | 2015-03-15 | 2016-02-15 | 계량 작업대 |
CA2983502A CA2983502A1 (en) | 2015-03-15 | 2016-02-15 | Weighing take-off |
US15/558,966 US20180136034A1 (en) | 2015-03-15 | 2016-02-15 | Weighing Take-Off |
SG11201708492YA SG11201708492YA (en) | 2015-03-15 | 2016-02-15 | Weighing take-off |
JP2017567530A JP2018511478A (ja) | 2015-03-15 | 2016-02-15 | 計量用取出装置 |
EP16704831.3A EP3271087A1 (de) | 2015-03-15 | 2016-02-15 | Wägeabzug |
CN201680028304.6A CN107635663A (zh) | 2015-03-15 | 2016-02-15 | 称量通风橱 |
IL254486A IL254486A0 (en) | 2015-03-15 | 2017-09-13 | Weighing the mirror |
HK18103301.8A HK1243671A1 (zh) | 2015-03-15 | 2018-03-08 | 稱量通風櫥 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015103765.3 | 2015-03-15 | ||
DE102015103765.3A DE102015103765B4 (de) | 2015-03-15 | 2015-03-15 | Wägeabzug |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016146314A1 true WO2016146314A1 (de) | 2016-09-22 |
Family
ID=55361490
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2016/053115 WO2016146314A1 (de) | 2015-03-15 | 2016-02-15 | Wägeabzug |
Country Status (11)
Country | Link |
---|---|
US (1) | US20180136034A1 (de) |
EP (1) | EP3271087A1 (de) |
JP (1) | JP2018511478A (de) |
KR (1) | KR20170134488A (de) |
CN (1) | CN107635663A (de) |
CA (1) | CA2983502A1 (de) |
DE (1) | DE102015103765B4 (de) |
HK (1) | HK1243671A1 (de) |
IL (1) | IL254486A0 (de) |
SG (1) | SG11201708492YA (de) |
WO (1) | WO2016146314A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106994368A (zh) * | 2017-06-01 | 2017-08-01 | 苏州市职业大学 | 化学药品称重管理系统 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015103768B4 (de) * | 2015-03-15 | 2020-10-22 | Waldner Ag | Wägeabzug |
DE102018107010A1 (de) * | 2018-03-23 | 2019-09-26 | Waldner Laboreinrichtungen Gmbh & Co. Kg | Laborabzug |
US10918593B2 (en) * | 2018-04-18 | 2021-02-16 | Amy M. Spring | Personal lubricant disk |
US20210121396A1 (en) * | 2018-04-18 | 2021-04-29 | Amy M. Spring | Personal Lubricant Disk |
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2016
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- 2016-02-15 WO PCT/EP2016/053115 patent/WO2016146314A1/de active Application Filing
- 2016-02-15 EP EP16704831.3A patent/EP3271087A1/de not_active Withdrawn
- 2016-02-15 US US15/558,966 patent/US20180136034A1/en not_active Abandoned
- 2016-02-15 JP JP2017567530A patent/JP2018511478A/ja active Pending
- 2016-02-15 CA CA2983502A patent/CA2983502A1/en not_active Abandoned
- 2016-02-15 SG SG11201708492YA patent/SG11201708492YA/en unknown
- 2016-02-15 CN CN201680028304.6A patent/CN107635663A/zh active Pending
-
2017
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2018
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Also Published As
Publication number | Publication date |
---|---|
CN107635663A (zh) | 2018-01-26 |
JP2018511478A (ja) | 2018-04-26 |
KR20170134488A (ko) | 2017-12-06 |
DE102015103765B4 (de) | 2020-10-22 |
EP3271087A1 (de) | 2018-01-24 |
DE102015103765A1 (de) | 2016-09-15 |
HK1243671A1 (zh) | 2018-07-20 |
CA2983502A1 (en) | 2016-09-22 |
IL254486A0 (en) | 2017-11-30 |
US20180136034A1 (en) | 2018-05-17 |
SG11201708492YA (en) | 2017-11-29 |
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