EP2629024A2 - Hotte avec aspiration améliorée - Google Patents

Hotte avec aspiration améliorée Download PDF

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Publication number
EP2629024A2
EP2629024A2 EP13154659.0A EP13154659A EP2629024A2 EP 2629024 A2 EP2629024 A2 EP 2629024A2 EP 13154659 A EP13154659 A EP 13154659A EP 2629024 A2 EP2629024 A2 EP 2629024A2
Authority
EP
European Patent Office
Prior art keywords
air
outflow
opening
inflow opening
outflow device
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
Application number
EP13154659.0A
Other languages
German (de)
English (en)
Other versions
EP2629024B1 (fr
EP2629024A3 (fr
Inventor
Frank Wesemann
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.)
Wesemann GmbH
Original Assignee
Wesemann GmbH
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.)
Filing date
Publication date
Application filed by Wesemann GmbH filed Critical Wesemann GmbH
Publication of EP2629024A2 publication Critical patent/EP2629024A2/fr
Publication of EP2629024A3 publication Critical patent/EP2629024A3/fr
Application granted granted Critical
Publication of EP2629024B1 publication Critical patent/EP2629024B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F9/00—Use of air currents for screening, e.g. air curtains
    • 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
    • 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

Definitions

  • the invention relates to a trigger, in particular fume hood, for the suction of gaseous media with an inflow opening for sucking in air.
  • Such a trigger is for example as a fume hood from the DE 102 53 550 A1 known.
  • the flow behavior of such a trigger is optimized for a sufficiently good take-off result or a sufficient take-off performance.
  • the inflow in particular of ambient air, takes place directly from the front, namely from the ambient space of the trigger in the direction of the inflow opening or a front side.
  • the inflow should take place at an acute angle to the surface normal of the inflow opening plane, an actuation opening plane and / or the front side plane.
  • a trigger can be used to work with toxic and / or hazardous substances and / or materials.
  • air, gases, vapors, dust and / or aerosols are extracted as gaseous media. For this purpose, air is sucked from an ambient space of the trigger in the trigger.
  • the disadvantage here is that optimized for a sufficient suction flow into the deduction of surrounding currents can be influenced.
  • currents flowing from above and / or below and substantially in the plane of the front side can also have a negative effect on the inflow for the exhaust, such as flows flowing from side walls into the area of the front side.
  • temperature differences, in particular between different air masses, and / or the humidity of the air, in particular the supply air supplied to the ambient space may cause disturbing room air and / or supply air flows.
  • a trigger of the type mentioned which has at least one outflow device for generating an air space extending into an air space barrier, wherein the air barrier for deflecting disturbing air and / or supply air flows in the direction of the ambient space and the inflow opening is directed away.
  • the outflow device preferably provides an air barrier of at least one air curtain.
  • otherwise disturbing room air and / or supply air flows can be deflected in the direction of the surrounding space and led away from the trigger, in particular the inflow opening.
  • the necessary for the function of the trigger air is thus largely unaffected by disturbing flows from the front, in particular at an acute angle to the surface normal of Einströmö Maschinensebene, an operating opening plane and / or the front side plane, supplied from the surrounding space in the direction of the inflow opening.
  • the conditions for the incoming air in the trigger better, in particular at least largely independent of the Discharge surrounding flow conditions, definable and / or controllable.
  • a sufficiently good deduction result or a sufficient deduction can be guaranteed.
  • the air barrier extends in a plane transversely, in particular at right angles, to a plane of the inflow opening, an actuation opening, a front side and / or a side wall.
  • the air barrier acts as a kind of obstacle on flows that run essentially parallel to the plane of the inflow opening, the actuation opening and / or the front side.
  • the disturbing flow is deflected in the direction of the flow of the air barrier and thus guided away from the inlet opening, actuating opening and / or front side.
  • the inflow opening and / or the actuation opening is at least partially surrounded by the outflow device.
  • disturbing flows can be sufficiently shielded in the direction of the inflow opening and / or actuation opening.
  • the inflow opening and / or the actuation opening is completely surrounded by at least one outflow device.
  • influencing the inflow of air into the trigger by disturbing currents is particularly well avoided.
  • the outflow device can have one or more outflow elements.
  • the discharge element is designed as a nozzle bar and / or a nozzle.
  • the outflow device can be designed as a separate component, in particular for retrofitting of fume hoods.
  • the outflow device may be at least partially integrated into the trigger.
  • the outflow element is disk-like, preferably with a circular-segment-like, round and / or oval shape.
  • the outflow device has at least one outflow opening for the outflow of air and generating the air barrier.
  • the outflow opening can be introduced into a front side and / or a side wall of the trigger.
  • the outflow opening is designed as a nozzle.
  • the outflow opening for generating an airflow directed away from the inflow opening, an actuation opening, a front side and / or a side wall into an ambient space is designed for the formation of the air barrier.
  • the outflow device may have a plurality of, in particular juxtaposed and / or above one another, outflow openings. The outflow openings can be positioned on a line to each other.
  • the opening angle is symmetrical to a surface normal, in particular a front side, a side wall or a Ausström drivings phenomenon arranged.
  • the Ausström Hughessthesis may be formed as a semicircular and / or quarter-circular peripheral surface.
  • the outflowing airflow is directed radially away from the outflow device surface.
  • the outflow device is arranged above, below and / or laterally next to the inflow opening.
  • an inflow into the inflow opening of flows from above, below and / or the sides of the inflow opening is at least largely avoidable.
  • the air barrier, in particular the outflow device preferably extends over at least the entire width and / or at least the entire height of the inflow opening and / or an actuation opening. As a result, the shield against disturbing currents is further improved.
  • the actuating opening is formed as an access opening, in particular for an operator, to reach a discharge chamber.
  • the actuating opening can be designed to be closable, in particular by means of a closure element, preferably a sash and / or sliding elements.
  • an inflow opening remains open in the closed state of the actuating opening.
  • the inflow opening can be arranged below the actuating opening closed by means of the closure element and directly above an edge of a working surface of the pull-off chamber.
  • the inflow opening is designed as, in particular at least partially closable, actuating opening.
  • At least one outflow device in particular with two or three outflow elements, is arranged in an area above an upper edge of the inflow opening and below an upper edge of the trigger.
  • disruptive flows which are aligned substantially from top to bottom in the direction of the inflow opening, can be guided away from the trigger and / or the inflow opening.
  • the outflow device can be arranged in the region of a first side wall and / or a second side wall.
  • the outflow device is arranged in the region of an edge and / or a transition from a side wall to a front side.
  • the outflow device is provided only in the region of the outer free-standing side walls.
  • the outer are free standing side walls associated with the two prints, which are each at one end of a series of prints.
  • the outflow device preferably extends from an area between a standing surface and a lower edge of the inflow opening into a region between an upper edge of the inflow opening and an upper edge of the trigger.
  • a ventilation device in particular a fan, for sucking and / or accelerating air, in particular room air and / or supply air from a supply air device, is provided for supplying the outflow device with air.
  • the ventilation device can be designed as a separate component, in particular for retrofitting a trigger, or as an integral part of the trigger.
  • the air flow and / or the air barrier with an outlet velocity in a range of 0.1 m / s to 1.5 m / s can be blown.
  • the exit velocity above the inflow opening is in a range of 0.2 m / s to 1.0 m / s.
  • the exit velocity can be in the range from 0.15 m / s to 0.5 m / s at the side next to the inflow opening. Due to these discharge speeds, on the one hand a sufficient shielding effect can be achieved, on the other hand, the environmental space of the trigger is not unnecessarily stirred up. In particular, a sufficiently pleasant working situation for an operator can be ensured.
  • a heating device is provided for heating the air provided for the outflow device.
  • the air is heatable to ambient temperature.
  • the heating device is integrated in the outflow device and / or arranged between the ventilation device and the outflow device.
  • a controller for controlling the outflow device, the ventilation device and / or the heating device is provided.
  • the control preferably takes place as a function of an adjustable opening degree of the inflow opening.
  • the inflow opening is designed as an at least partially closable actuating opening. As a result, the opening degree of the inflow opening is variable. Depending on how far the inflow opening or the actuation opening is closed and / or opened, the outflow velocity, the Ausström whippound and / or the heating temperature can be changed.
  • the air barrier is aligned in a plane transversely, in particular at right angles, to a plane of the inflow opening, an actuating opening, a front side and / or a side wall.
  • the air barrier and / or the air flow of the air barrier is directed away from the plane of the inflow opening, actuation opening, front side and / or side wall.
  • the inflow opening and / or the actuation opening is at least partially surrounded by the outflow device, whereby the barrier effect is further improved.
  • an exit velocity of the air barrier from the outflow device and / or a flow rate of the air through the outflow device, in particular as a function of an adjustable opening degree of the inflow opening, are controlled by means of a controller.
  • the discharge is operated demand-dependent.
  • Fig. 1 shows a perspective side view of a first trigger according to the invention 10.
  • the trigger 10 has a front side 11 and two side walls facing away from each other 12, 13.
  • the front side 11 is associated with a closable actuating opening 14.
  • the actuating opening 14 is closable in the embodiment shown here by means of a vertically displaceable sash 15 and horizontally displaceable sliding elements 16 integrated therein.
  • a discharge chamber 17 in the interior of the trigger 10 is accessible to an operator.
  • At least one inflow opening 18 is provided, which allows an intake of air from an ambient space surrounding the trigger 10.
  • the size of the inflow opening 18 is adjustable in the embodiment shown here in dependence on the position of the sash 15 and / or the sliding elements 16. In a complete closure of the actuating opening 14 with the sash 15 and the sliding elements 16 remains an inflow opening 18 immediately below the sash 15. This is even with the operating opening 14 closed a continuous withdrawal of gaseous media, such as air, gases, vapors, dusts and / or Aerosols, from the discharge chamber 17 guaranteed.
  • the sash 15 is in its closed position while the sliding elements 16 leave a portion of the actuating opening 14 free. As a result, the inflow opening 18 is increased accordingly.
  • the trigger 10 has an outflow device 19.
  • the outflow device 19 has outflow elements 20, 21, 22, 23, 24.
  • the outflow elements 20, 21, 22 are arranged above the actuating opening 14 and each extend over the entire width of the actuating opening 14 or the trigger 10.
  • the outflow elements 23, 24 are each arranged laterally next to the actuating opening 14 and extend over approximately the entire Height of the trigger 10.
  • the discharge elements 20, 21,22, 23, 24 are formed as nozzle strips.
  • the outflow device 19 or the outflow elements 20, 21, 22, 23, 24 have a plurality, not shown here, outflow openings.
  • the outflow openings are arranged in the longitudinal direction of the outflow elements 20, 21, 22, 23, 24. From the outflow device 19 and the outflow openings exits an air flow, as indicated schematically by arrows 25. For better clarity, not all arrows 25 are provided with a reference numeral.
  • an air flow or an air barrier is generated by means of the outflow device 19, which is directed away from the front side 11, the actuating opening 14 and the inflow opening 18 and into the surrounding space.
  • the actuation opening 14 and the inflow opening 18 are partially surrounded, namely above and laterally of the actuation opening 14 and the inflow opening 18, by the outflow device 19.
  • Fig. 2 is a section of the perspective side view of the first trigger 10 according to the invention Fig. 1 refer to.
  • the section shown here shows a part of the outflow elements 20, 24.
  • the outflow element 20 has outflow openings 26, which are arranged horizontally or horizontally next to one another in the exemplary embodiment shown here.
  • the outflow element 24 has outflow openings 27, which are arranged vertically or vertically above one another in the exemplary embodiment shown here. For better clarity, not all outflow openings 26, 27 are provided with a reference numeral.
  • the air flow flowing out of the outflow openings 26, 27, indicated schematically by the arrows 25, is directed away from the front side 11 or the plane of the front side 11 in this example.
  • the opening angle is formed symmetrically to a surface normal of the front side 11. This results in an air barrier, the components of which extend in the embodiment shown here, starting from the outflow device 19 transversely to the front side 11 and from the front side 11 away.
  • the outflow elements 20, 21, 22, 23, 24 each generate an air curtain as part of the entire air barrier.
  • the actuation opening 14 and / or the inflow opening 18 are partially surrounded by the air barrier or the air curtains.
  • the exit velocity of the air flow from the outflow openings 26 of the outflow elements 20, 21, 22 is in the embodiment shown here in the range of 0.2 m / s to 1.0 m / s.
  • the exit velocity of the air flow is in the range of 0.15 m / s to 0.5 m / s.
  • Fig. 3 shows a perspective side view of a second inventive trigger 28.
  • the second trigger 28 has a largely to trigger 10 according to Fig. 1 and Fig. 2 same structure. Same elements as before bear the same reference numerals. In that regard, reference is also made to the preceding description.
  • an outflow device 29 is provided, in which outflow elements 30, 31 are provided instead of the outflow elements 23, 24. Also, the discharge elements 30, 31 are laterally adjacent to the actuating opening 14 and the inflow opening 18 and extending over the entire height of the trigger 28. However, according to the arrows 25 schematically indicated from the discharge elements 30, 31 exiting air flow is aligned transversely to the plane of the side wall 12 and 13 respectively.
  • Fig. 4 is a section of the perspective side view of the second trigger 28 according to the invention Fig. 3 ,
  • the section shows a part of the outflow elements 20, 30.
  • the outflow element 20 has outflow openings 26, which are arranged horizontally or horizontally next to each other in the embodiment shown here.
  • the outflow element 30 has outflow openings 32, which are arranged vertically or vertically above one another in the exemplary embodiment shown here. For better clarity, not all outflow openings 26, 32 are provided with a reference numeral.
  • the schematically indicated by the arrows 25 air flow from the discharge openings 26, in this example, directed away from the front side 11.
  • the outflow elements 20, 21, 22 results in an air barrier, the components of which extend in the embodiment shown here, starting from the discharge elements 20, 21, 22 transversely to the front side 11 and from the front side 11 away.
  • the outflow openings 32 of the discharge elements 30, 31 cause an air barrier, which also extends away from the front side 11, but is arranged substantially in a plane parallel to the front side 11.
  • the outflow elements 20, 21, 22, 30, 31 each generate an air curtain as part of the entire air barrier.
  • the air flow is blown out from the outflow elements 20, 21, 22, 30, 31 or the outflow openings 26, 32 at an opening angle in the range from 60 ° to 120 °.
  • the opening angle is formed here symmetrically to the surface normal of the front side 11 and for the outflow openings 32 symmetrically to the surface normal of the side wall 12 or 13 for the outflow openings 26.
  • Fig. 5 shows a perspective side view of another deduction invention 32.
  • the further deduction 32 has a largely to the prints 10, 28 according to Fig. 1 to Fig. 4 same structure. Same elements as before bear the same reference numerals. In that regard, reference is also made to the preceding description.
  • outflow device 33 in which outflow elements 34, 35, 36 are provided instead of the outflow elements 20, 21, 22, 23, 24 and 30, 31.
  • the outflow elements 34, 35, 36 are assigned to an upper end of the front side 11.
  • the discharge element 34 is centered to the longitudinal axis of the front side eleventh positioned and formed in the embodiment shown here as a semi-circular disc.
  • the semicircular disc is arranged at right angles to the plane of the front side 11 and in the direction of the surrounding space, wherein the plane of the outflow element 34 extends horizontally and at right angles to the front side 11.
  • the diameter of the outflow element 34 is significantly smaller than the width of the trigger 32. In this embodiment, the diameter is about 1/5 of the width of the trigger 32.
  • the air flow emerging from the discharge element 34 is of the semicircular Peripheral surface directed away.
  • the outflow elements 35, 36 are arranged adjacent to the side walls 12 and 13 at the upper end of the front side 11.
  • the outflow elements 35, 36 are formed in the embodiment shown here as a quarter-circle-shaped discs.
  • the quarter-circle-shaped disks are arranged at right angles to the plane of the front side 11 and in the direction of the surrounding space, the plane of the discharge elements 35, 36 extending perpendicularly and at right angles to the front side 11.
  • the quarter-circle-shaped peripheral surfaces of the outflow elements 35, 36 are remote from an upper edge of the trigger 32.
  • the radius of the quarter-circle-shaped outflow elements 35, 36 corresponds in the embodiment shown here to the radius of the semicircular outflow element 34. As indicated schematically by the arrows 25, the air flow emerging from the outflow elements 35, 36 is directed away from the quarter-circle-shaped peripheral surfaces.
  • Fig. 6 is a section of the perspective side view of the further inventive deduction 32 according to Fig. 5 refer to.
  • the section shows the discharge elements 34, 35.
  • the discharge element 34 has outflow openings 37, which are arranged in the embodiment shown here on a semi-circular in cross section peripheral surface 38 of the discharge element 34.
  • the outflow element 35 has outflow openings 39 which, in the exemplary embodiment shown here, are arranged on a circumferential surface 40 which is quarter-circle-shaped in cross-section. For better clarity, not all outflow openings 37, 39 are provided with a reference numeral.
  • the air flow indicated schematically by means of the arrows 25 from the outflow openings 37, 39 is directed away from the peripheral surface 38, 40 in this example.
  • the outflow element 34 results in an air barrier, which extends in the embodiment shown here, starting from the peripheral surface 38 transversely to the front side 11 and from the front side 11 away. This results in a substantially horizontal orientation of the air barrier.
  • the outflow openings 39, the discharge elements 35, 36 cause an air barrier, which also extends transversely to the front side and from the front side 11, but has a substantially vertical orientation.
  • the outflow elements 34, 35, 36 each produce an air curtain as part of the entire air barrier.
  • the air flow is at an opening angle in the range of 60 ° to 120 ° from the discharge elements 34, 35, 36 and the discharge openings 37, 39 blown out.
  • the opening angle is formed as a function of the respective outflow opening symmetrically to the surface normal of the peripheral surface 38 and 40, respectively.
  • the fume hoods 10, 28, 32 are optimized with respect to a given flow in order to achieve a sufficiently good suction result.
  • the inflow in particular of ambient air, preferably takes place directly from the front, namely from the ambient space in the direction of the front side 11 or the inflow opening 18.
  • the outflow devices 19, 29, 33 provide an air barrier of air curtains at least partially surrounding the inflow opening 18 and the actuation opening 14, respectively, and away from the trigger 10, 28, 32 or the front 11 and / or side walls 12, 13 extend in the direction of the ambient space.
  • the outflow devices 19, 29, 33 otherwise disturbing flows are deflected in the direction of the ambient space and from the trigger 10, 28, 32, in particular the inflow opening 18, led away.
  • the necessary for the function of the trigger 10, 28, 32 air is thus largely uninfluenced by disturbing currents from the front of the ambient space in the direction of the inflow port 18 can be fed.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Air-Flow Control Members (AREA)
  • Ventilation (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP13154659.0A 2012-02-15 2013-02-08 Hotte avec aspiration améliorée Active EP2629024B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012002804A DE102012002804A1 (de) 2012-02-15 2012-02-15 Abzug mit verbesserter Einsaugung

Publications (3)

Publication Number Publication Date
EP2629024A2 true EP2629024A2 (fr) 2013-08-21
EP2629024A3 EP2629024A3 (fr) 2017-01-11
EP2629024B1 EP2629024B1 (fr) 2020-08-26

Family

ID=47739082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13154659.0A Active EP2629024B1 (fr) 2012-02-15 2013-02-08 Hotte avec aspiration améliorée

Country Status (2)

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EP (1) EP2629024B1 (fr)
DE (1) DE102012002804A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114453375A (zh) * 2020-11-09 2022-05-10 实验室融合有限责任公司 风量可调型通风柜设备

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113751452B (zh) * 2021-08-20 2023-04-07 哈工大泰州创新科技研究院有限公司 一种实验室通风柜

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10253550A1 (de) 2002-11-15 2004-06-03 Wesemann Gmbh & Co. Abzug mit einem Gehäuse, das einen Innenraum aufweist

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3127680C2 (de) * 1981-07-14 1985-06-05 J. Wolfferts GmbH & Co KG, 5000 Köln Selbstbelüfteter Abzug
US4467782A (en) * 1981-08-19 1984-08-28 Russell Robert E Ventilating system for use with devices which produce airborne impurities
US6450879B1 (en) * 2001-10-29 2002-09-17 Yeong-Nian Suen Air curtain generator
JP2009139067A (ja) * 2007-12-10 2009-06-25 Toto Ltd 排気装置
DE102008014283B4 (de) * 2008-03-06 2021-06-10 Blanco Professional Gmbh + Co Kg Wrasenabzugsvorrichtung und eine solche umfassende Aufnahmevorrichtung für mindestens eine Speisenzubereitungseinheit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10253550A1 (de) 2002-11-15 2004-06-03 Wesemann Gmbh & Co. Abzug mit einem Gehäuse, das einen Innenraum aufweist

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114453375A (zh) * 2020-11-09 2022-05-10 实验室融合有限责任公司 风量可调型通风柜设备

Also Published As

Publication number Publication date
EP2629024B1 (fr) 2020-08-26
DE102012002804A1 (de) 2013-08-22
EP2629024A3 (fr) 2017-01-11

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