EP1477241B1 - Table et hotte d'aspiration pour laboratoire ou similaire - Google Patents

Table et hotte d'aspiration pour laboratoire ou similaire Download PDF

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Publication number
EP1477241B1
EP1477241B1 EP04009775A EP04009775A EP1477241B1 EP 1477241 B1 EP1477241 B1 EP 1477241B1 EP 04009775 A EP04009775 A EP 04009775A EP 04009775 A EP04009775 A EP 04009775A EP 1477241 B1 EP1477241 B1 EP 1477241B1
Authority
EP
European Patent Office
Prior art keywords
fume hood
suction
hood according
rear wall
sidewalls
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.)
Expired - Lifetime
Application number
EP04009775A
Other languages
German (de)
English (en)
Other versions
EP1477241A3 (fr
EP1477241A2 (fr
Inventor
Hermann Schaffitzel
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.)
GFP Gesellschaft fuer Produktivitaetsplanung und Produktentwicklung mbH
Original Assignee
GFP Gesellschaft fuer Produktivitaetsplanung und Produktentwicklung mbH
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 GFP Gesellschaft fuer Produktivitaetsplanung und Produktentwicklung mbH filed Critical GFP Gesellschaft fuer Produktivitaetsplanung und Produktentwicklung mbH
Publication of EP1477241A2 publication Critical patent/EP1477241A2/fr
Publication of EP1477241A3 publication Critical patent/EP1477241A3/fr
Application granted granted Critical
Publication of EP1477241B1 publication Critical patent/EP1477241B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2215/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B2215/003—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area with the assistance of blowing nozzles

Definitions

  • the invention relates to a table deduction for a laboratory or the like. with a table top, over which a chamber with a ceiling, side walls, a rear wall and a front wall is arranged, which contains a closable by means of a closure element, starting at the height of the table top work opening, wherein open into the chamber suction.
  • DIN EN 14175 provides that an airflow directed inwardly through the working port is created to enhance the ability to retain and remove pollutants released from a source inside the exhaust.
  • possible disturbing influences for example by draft, user movements or passenger traffic, should be minimized.
  • the known table prints with a sash meet these requirements only inadequate. If suction is carried out over the entire width of the trigger essentially through the same suction opening, substantially higher flow speeds result in the middle region of the working opening than in its lateral areas. This uneven velocity distribution leads to the danger of outbreaks of pollutants in the lateral areas.
  • a support jet technique is known, according to which in addition air is blown in the side areas, which is blown out of blow holes of a handle of the sash or blow holes above the table top.
  • the additionally injected air requires an additional blower and increases the energy requirement. It also increases the risk of air swirling within the fume cupboard, which can disrupt the retention of pollutants within the fume cupboard and the removal of pollutants from the fume hood.
  • the invention has for its object to improve the Einström scholar of air, which serves to retain pollutants, so that as possible without increased energy expenditure, a high retention capacity for pollutants is obtained, this retention is robust against interference.
  • suction openings are provided in the side walls, each extending in the vertical direction of about the height of the table top to a height that corresponds approximately to the upper boundary of the working opening.
  • the released in the interior of the chamber of the table trigger pollutants are sucked diagonally to the rear corner regions of the chamber, wherein flows through the work opening through air.
  • the flow velocity of the inflowing air is distributed approximately uniformly over the width of the working opening. In the area of the side edges of the working opening occurs only a relatively small drop in the flow velocity.
  • the beautötechnische are designed to suck in an amount of air that is less than that of the disposed in the region of the transition between the side walls and the rear wall suction.
  • the determination of the quantities of air to be sucked in can take place, for example, via the dimensioning of the cross-sectional area of the suction openings and the additional suction openings.
  • At least one Deckenabsaugö réelle is provided.
  • Deckenabsaugö réelleen whose exact location plays a less important role, especially the highly volatile pollutants are removed.
  • the in Fig. 1 and 2 illustrated table trigger has a body 10 (a base), the top of which carries a table top 11. Above the table top 11 is a chamber which is bounded by a ceiling 12 of a rear wall 13 and two side walls 14 and 15. The rear wall 13 opposite the front wall 16 has a working opening 17, through which the chamber of the table trigger is accessible. The working opening 17 is closable by means of a sash 18, which is movable in the vertical direction up and down.
  • the sash 18 is provided with a handle bar 19, which is designed as a safety handle profile. It has an outwardly of the interior of the table deduction outwardly obliquely downward deflection guide, which engages over the front edge of the table top 11 in the fully closed state.
  • the table trigger with two suction holes 20, 21 is provided, which are connected in a manner not shown to a fan.
  • the suction openings 20, 21 are located in the region of the corners between the rear wall 13 and the side walls 14, 15.
  • Fig. 1 and 2 is in the region of this transition from the side walls 14, 15 to the rear wall 13 each have a hollow profile 22, 23 is arranged, which is connected in a manner not shown to a fan.
  • the suction openings 20, 21 are incorporated in the two profiles 22, 23 in the form of slots extending in the vertical direction from about the level of the table top 11 to slightly above the height of the handle bar 19 of the sash 18.
  • This design and arrangement of the suction openings 20, 21 causes on the one hand inside the chamber released pollutants are safely sucked, while on the other hand flows through the working port 17 through air, which prevents leakage of pollutants, ie ensures a good retention capacity. Since the velocity distribution of the air flowing in through the working opening 17 is relatively evenly distributed over the width of the working opening 17, the retention capacity is also relatively robust against disturbances caused by drafts, movements of the operator or persons moving past the table outlet in the area of the working opening 17.
  • the table trigger has in the region of the front wall 16 two further vertical profiles 24, 25, so that the table trigger can be formed overall as a mechanically stable structural unit.
  • Between the rear wall 13 and the ceiling 12 is a on the rear wall 13 beginning, over the entire width between the profiles 22, 23 extending aperture 26 is arranged.
  • a suction nozzle 27 is connected.
  • the panel 26, which ends at a distance from the ceiling 12, forms together with the ceiling 12 a Deckenabsaugö réelle 28, are sucked on the particular released volatile pollutants.
  • the ceiling 12 facing the edge of the aperture 26 is profiled so that a deflection edge 29 is formed, which acts as a kind of tear-off.
  • the inventive table deduction after 3 and 4 corresponds in its basic structure to the table deduction after Fig. 1 and 2 ,
  • a table top 11 over which the chamber of the table top is formed of a rear wall 13, two side walls 30, 31 and a ceiling 12.
  • the front wall 16 is provided with a sash 18, the lower edge has a handle bar 19.
  • From the rear wall 13 extends obliquely upwards to the ceiling 12, a diaphragm 26.
  • the space between the aperture 26, the ceiling 12 and the rear wall 13 is provided with a suction nozzle 27.
  • the aperture 26 ends in front of the ceiling 12, so that a Deckenabsaugö réelle 28 is formed.
  • the side walls 30, 31 are double-shelled, so that they form a cavity which is connected in each case via an opening 32 with the area between the panel 26, the ceiling 12 and the rear wall 13, so that the suction nozzle 27 with the interior of the side walls 30, 31 is connected.
  • the inner wall of the side walls 30, 31 is provided in each case in the region of the transition to the rear wall 13 with a suction opening 33, 34, each having the shape of a slot, which differs from the height of the Table top 11 extends to slightly above the height of the upper edge of the working opening 17, ie in height slightly above the handle bar 19 of the sash 18 addition.
  • the side walls 30, 31 are also provided with adjuction opening 33, 34 which are relatively close to the hollow sections 24, 25 which surround the front wall 16.
  • the adjectiveabsaugö réelleen 35, 36 also have the shape of slots which extend in the vertical direction approximately from the height of the table top 11 to slightly above the height of the handle bar 19 of the sash 18 out, that is to slightly beyond the upper limit of the working opening 17 addition.
  • Fig. 5d are concave vaulted aperture 43 arranged in the region of the corners between the side walls 14, 15 and the rear wall 13 to the interior of the table deduction, which form together with parts of the side walls 14, 15 and the rear wall 13 channels, which is connected to a suction device.
  • the shutters 43 are recessed in the area between the table top 11 and the upper boundary of the working opening at both edges, so that they form two suction openings 44, 45 in the region of the transition between the side walls 14, 15 and the rear wall 13.
  • the embodiment according to Fig. 5e provides that in the corner regions between the side walls 14, 15 and the rear wall 13 by means of U-shaped profiles 46 channels are formed, which are connected to a suction device.
  • the profiles 46 are provided in the area between the table top 11 and the upper boundary of a working opening with slot-shaped suction openings 41, which are opposite each other.
  • Fig. 5f are in the corners between the side walls 14, 15 and the rear wall 13 convex to the interior of the table deduction curved aperture 48 is provided with the rear wall 13 and the side walls 14, 15 each form channels which are connected to a suction device.
  • the diaphragms 48 are recessed in the area beginning at the table top 11 up to the upper boundary of a working opening at their edges facing the rear wall 13, so that suction openings 29 are formed in this area, which lie opposite one another.
  • Fig. 6 it is also possible to influence the flow velocity in the area of the lateral boundary of the working opening by the two profiles bounding the front wall 16 laterally.
  • Fig. 6 are double-shell side walls 30, 31 according to the embodiment according to FIG. 3 and FIG. 4 provided, each one in Fig. 6 non-visible suction opening 33, 34 and 1925absaugö réelle 35, 36 have, the side walls, as shown for the side wall 31 are bounded by a profile 50, which is made as extruded aluminum or plastic.
  • the profile 50 receives the stationary part of the front wall 16 and the up and down movable sash 18.
  • counterweights 51 are arranged, which are provided for weight balance for the sash 18.
  • the counterweights 51 are guided with guide rollers 52 in integrally formed guide grooves.
  • the profiles 50 are provided in their frontal region with a removable lid.
  • the opposite side surfaces of the profiles 50, which limit the working opening laterally, are designed according to fluidic aspects, to ensure that the in the table extract air flowing against these side surfaces of the profiles.
  • the side surfaces of the profiles are curved like a wing.

Landscapes

  • Ventilation (AREA)
  • Devices For Use In Laboratory Experiments (AREA)
  • Table Devices Or Equipment (AREA)
  • Sawing (AREA)

Claims (13)

  1. Sorbonne sur paillasse pour laboratoire ou similaire, comprenant une plaque de table (11) au-dessus de laquelle est agencée une chambre comprenant un plafond (12), des parois latérales (14, 15 ; 30, 31), une paroi arrière (13) et une paroi frontale (16) qui contient une ouverture de travail (17) obturable au moyen d'un élément de fermeture (18) et commençant à hauteur de la plaque de table (11), sachant que des orifices d'aspiration débouchent dans la chambre et que dans la transition entre les parois latérales (14, 15 ; 30 ; 31) et la paroi arrière est agencé chaque fois un orifice d'aspiration (20, 21, 33, 34, 38, 40, 42, 44, 45, 47, 49) qui s'étend respectivement en direction verticale sur une hauteur correspondant approximativement à la limitation supérieure de l'ouverture de travail,
    caractérisée en ce que
    dans les parois latérales (30, 31) des orifices d'aspiration supplémentaires (35, 36) ont été prévus qui s'étendent, dans le sens vertical, environ depuis la hauteur de la plaque de table (11) jusqu'à environ la hauteur de la limitation supérieure de l'ouverture de travail (17).
  2. Sorbonne sur paillasse selon la revendication 1, caractérisée en ce qu'à l'ouverture de travail (17) que présente la paroi frontale (16) est affecté un panneau frontal coulissant (18) déplaçable dans le sens vertical.
  3. Sorbonne sur paillasse selon la revendication 1 ou 2, caractérisée en ce que les orifices d'aspiration supplémentaires (35, 36) ont été conçus pour aspirer une quantité d'air inférieure à celle passant par les orifices d'aspiration (33 ; 34) agencés dans la zone de transition entre les parois latérales (30, 31) et la paroi arrière (13).
  4. Sorbonne sur paillasse selon la revendication 1 à 3, caractérisée en ce qu'au moins un orifice d'aspiration au plafond (28) est prévu.
  5. Sorbonne sur paillasse selon l'une des revendications 1 à 4, caractérisée en ce que les parois latérales (30, 31) sont configurées en chambres creuses servant de conduites d'aspiration et en ce que les parois intérieures sont dotées de fentes formant les orifices d'aspiration (30, 31) et/ou les orifices d'aspiration supplémentaires (35, 36).
  6. Sorbonne sur paillasse selon l'une des revendications 1 à 5, caractérisée en ce que dans la zone de transition entre la paroi arrière (13) et le plafond (12) est prévu un conduit d'aspiration présentant un orifice d'aspiration au plafond (28) en forme de fente, lequel orifice s'étend entre les parois latérales (14, 15).
  7. Sorbonne sur paillasse selon la revendication 6, caractérisée en ce que l'orifice d'aspiration au plafond (28) en forme de fente est doté d'un élément guide d'air (29).
  8. Sorbonne sur paillasse selon la revendication 6 ou 7, caractérisée en ce que un bandeau (26) s'étendant le long de la paroi arrière (13) entre les parois latérales (14, 15 ; 30, 31) sert de conduit d'aspiration.
  9. Sorbonne sur paillasse selon l'une des revendications 6 à 8, caractérisée en ce que le plafond (12) du conduit d'aspiration est prévu avec un embout d'aspiration (27).
  10. Sorbonne sur paillasse selon l'une des revendications 1 à 9, caractérisée en ce que les orifices d'aspiration (20, 21 ; 30, 31) et les orifices d'aspiration supplémentaires (35, 36) sont raccordés au moyen de conduites de liaison ou de conduits liaison ou similaires à l'embout d'aspiration (27) ménagé dans le plafond (12).
  11. Sorbonne sur paillasse selon l'une des revendications 1 à 10, caractérisée en ce que les limitations latérales (50) de l'orifice de travail (17) sont configurées en profilés d'écoulement, de sorte que l'air affluant dans la sorbonne sur paillasse applique contre ces limitations latérales (50) des profilés d'écoulement.
  12. Sorbonne sur paillasse selon l'une des revendications 1 à 11, caractérisée en ce que les limitations supérieures de l'orifice de travail sont formées par des profilés creux (24, 25, 50).
  13. Sorbonne sur paillasse selon l'une des revendications 1 à 12, caractérisée en ce que le panneau frontal coulissant (18) à son bord inférieur est prévu avec un profilé (19) de préhension qui en position fermée chevauche le bord avant de la plaque de table (11).
EP04009775A 2003-05-14 2004-04-24 Table et hotte d'aspiration pour laboratoire ou similaire Expired - Lifetime EP1477241B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10323675A DE10323675A1 (de) 2003-05-14 2003-05-14 Tischabzug für ein Labor odgl.
DE10323675 2003-05-14

Publications (3)

Publication Number Publication Date
EP1477241A2 EP1477241A2 (fr) 2004-11-17
EP1477241A3 EP1477241A3 (fr) 2005-08-31
EP1477241B1 true EP1477241B1 (fr) 2008-09-03

Family

ID=33016454

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04009775A Expired - Lifetime EP1477241B1 (fr) 2003-05-14 2004-04-24 Table et hotte d'aspiration pour laboratoire ou similaire

Country Status (3)

Country Link
EP (1) EP1477241B1 (fr)
AT (1) ATE406962T1 (fr)
DE (2) DE10323675A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006015234A1 (de) * 2006-03-30 2007-10-04 Wesemann Gmbh & Co. Kg Abzug mit vorderer Abluftöffnung
DE102008030029B4 (de) 2008-06-13 2010-04-08 GfP (Gesellschaft für Produktivitätsplanung und Produktentwicklung) mbH Abzug und Verfahren zum Verhindern eines Schadstoffausbruchs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3431669A1 (de) * 1984-08-29 1986-03-13 Müller, Johannes, 5202 Hennef Laborabzug und absaugverfahren mit zulufteinleitung
DE4118495A1 (de) * 1991-06-05 1992-12-10 Waldner Laboreinrichtungen Abzug

Also Published As

Publication number Publication date
ATE406962T1 (de) 2008-09-15
DE502004007966D1 (de) 2008-10-16
DE10323675A1 (de) 2005-01-13
EP1477241A3 (fr) 2005-08-31
EP1477241A2 (fr) 2004-11-17

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