EP2851625B1 - Assembly for ventilating a room, in particular a laboratory room - Google Patents

Assembly for ventilating a room, in particular a laboratory room Download PDF

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Publication number
EP2851625B1
EP2851625B1 EP14002405.0A EP14002405A EP2851625B1 EP 2851625 B1 EP2851625 B1 EP 2851625B1 EP 14002405 A EP14002405 A EP 14002405A EP 2851625 B1 EP2851625 B1 EP 2851625B1
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EP
European Patent Office
Prior art keywords
air
room
slot
region
opening
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EP14002405.0A
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German (de)
French (fr)
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EP2851625A1 (en
Inventor
Hansjörg Lüdi
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H LUEDI and CO AG
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H LUEDI and CO AG
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Publication of EP2851625A1 publication Critical patent/EP2851625A1/en
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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
    • 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
    • F24F7/08—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 with separate ducts for supplied and exhausted air with provisions for reversal of the input and output systems
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01L—CHEMICAL OR PHYSICAL LABORATORY APPARATUS FOR GENERAL USE
    • B01L9/00—Supporting devices; Holding devices
    • B01L9/02—Laboratory benches or tables; Fittings therefor
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B37/00—Tables adapted for other particular purposes
    • A47B2037/005—Tables specially adapted for laboratories
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B2200/00—General construction of tables or desks
    • A47B2200/06—Desks with inlet and evacuation of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0616—Outlets that have intake openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/10—Details or features not otherwise provided for combined with, or integrated in, furniture

Definitions

  • the invention relates to an arrangement for ventilation of a room, in particular a laboratory room, according to the preamble of claim 1.
  • an arrangement for ventilating a laboratory room which has a corridor area which is delimited on both sides by work tables.
  • Fresh air is introduced into the room via a supply air duct located above the aisle area, which comprises two lateral air supply sections that extend along the aisle area and each have a large number of circular air outlet openings from which the supply air emerges laterally towards the work tables is extracted again via an exhaust air duct arranged above it, which has two slot-like suction openings which extend essentially parallel to the supply air duct and which are arranged in the area of the ceiling of the room in such a way that an air roller forms on both sides of the aisle area, via which in the area of the work tables heated supply air reaches the ceiling of the room in the vertical direction.
  • the table tops of the work tables are flush with the rear with a rear wall on which the air rises from the area above the table tops.
  • the air heated below the table tops flows towards the center of the aisle area over the edge of the table tops and mixes there with the cool fresh air supplied from above. This results in a mixture of cool fresh air supplied and rising warm air, which is the amount of supplied Fresh air and thereby the energy required to provide the fresh air is increased.
  • the WO 2012/031700 A1 thus discloses an arrangement for ventilation according to the preamble of claim 1.
  • the invention includes an arrangement for ventilation of a room, in particular a laboratory room, which has a corridor area which is delimited on both sides by work tables, an inlet air duct arranged above the aisle area for the supply of preferably cooled fresh air into the room, which is subsequently also referred to as supply air referred to as.
  • the supply air duct can either be configured as an elongated continuous sheet metal duct with a preferably rectangular cross-section and two elongated slot nozzles arranged on the side of the longitudinal axis and directed downwards, which are supplied with fresh air from one end of the sheet metal duct via a transverse line.
  • the supply air duct is a preferably D-shaped hollow body made of a preferably flexible material, e.g. from an air-permeable textile or from a plastic film that has a large number of air outlet openings from which the supply air exits above the aisle area.
  • the supply air duct has two lateral air supply sections, preferably in the form of strips, which extend along the aisle area and each have a multiplicity of circular air outlet openings, which are preferably introduced into the air supply sections as perforations, for example with the aid of a laser or the like, and from which the supply air preferably exits exclusively in the lateral direction, ie at an angle to the vertical central axis of the aisle area, in the direction of the work tables.
  • the two lateral air supply sections are spaced apart from one another by an essentially air-impermeable central separating section, the central longitudinal axis of which preferably runs along the central central plane of the aisle area and which separates the first and second air supply sections.
  • an exhaust air duct is arranged above the supply air duct, which in the same way as the supply air duct preferably extends along the vertical center plane of the aisle area and exhausts the used and heated exhaust air compared to the supply air leads away from the room.
  • the exhaust air duct preferably has two slot-like suction openings which extend essentially parallel to the supply air duct and which are arranged at the highest possible point in the area of the building ceiling of the room.
  • the outflow angle and the size of the slot nozzles of the supply air duct according to the embodiment described first, or the size and number of air outlet openings arranged in the two lateral air supply sections and the width of the separating section of the last-described embodiment of the supply air duct are in the same way as the size and shape of the air extraction openings of the exhaust air duct is selected such that an air roller or an air vortex forms on both sides of the aisle area, the center of which is preferably approximately in the region of the aisle-side edge of the work tables and preferably at half the distance between the supply air duct and the floor.
  • the supply air duct or its hollow body can also consist of an air-permeable textile material in the preferred embodiment described last, it particularly preferably consists of a thin, in particular also translucent membrane with low air permeability, for example made of a plastic-coated textile fabric.
  • the supply air duct preferably extends over the entire length of the aisle area of the laboratory and, in the case of a plurality of laboratory workstations arranged one after the other, can preferably also extend over the entire length of the central aisles of all laboratories.
  • the perforation which is preferably introduced as a microperforation with a hole size in the range between 0.1 mm and 1 mm, preferably 0.4 to 0.6 mm and particularly preferably 0.5 mm in the material of the supply air duct which is essentially impermeable to air in the preferred embodiment is interrupted in the area of the central separating section to form the same.
  • the air outlet openings of the microperforation are advantageously arranged in rows transverse to the longitudinal axis of the aisle area at a distance of one to a few cm, preferably 2 cm.
  • the air outlet openings in the preferred embodiment of the invention have a distance of approximately 4 mm, which in the case of a standard laboratory results in an air exchange rate in the area between 12.5 and 37.5 m 3 / m 2 / h , which is about 4 to 12 times the air exchange rate in a standard laboratory.
  • the invention is characterized in that at least one of the work tables, but preferably all work tables, have a slot-like opening in the area of their rear side, through which warm air from the area under the table top, e.g. is generated by electrical devices such as workstations, refrigerators, power strips etc. as well as the body heat of people working at the tables, can flow upwards out of this area.
  • the slot-like opening can either be formed in the table top of the worktable, or can be formed on the rear of the rear edge of the table top by a recess which preferably extends between the two rear vertical posts or table legs of the table, if this in a known manner has a supporting frame , preferably made of metal.
  • vertical guide plates are arranged in the area of the rear of the work tables, which preferably extend in the vertical direction both in the area below and in the area above the table tops, and which serve as guide surfaces on which the heated air rises.
  • the resulting Coanda effect moves the rising warm air from the area below the table top towards the guide surface and pushes it towards it during the upflow, which advantageously leads to a channeling of the rising air through the guide surface , which means that it no longer mixes so strongly with the cool fresh air flowing in from above. This further reduces the energy requirement of the arrangement according to the invention.
  • a first guide plate is arranged below the table top, and / or a second guide plate extends upwards from the slot-like opening towards the ceiling of the room.
  • the second guide plate is preferably formed from a material which is particularly opaque to laser light and / or a fire-retardant material or a material with high mechanical strength, in particular an explosion-resistant material .
  • the guide plate advantageously also fulfills the function of protection against laser radiation, a fire protection barrier and / or splinter protection.
  • the second guide plate can also be made of a transparent material, preferably of glass or plexiglass, in order to maintain the flow-related advantages despite the spatial separation of two workplaces opposite one another on the rear and at the same time to enable a view through.
  • the at least one work table preferably has a frame which has two rear frame posts, between which the slot-like opening extends.
  • the two rear posts are preferably designed as metal or plastic profiles, which can be extended in the vertical direction via additional posts placed on them.
  • the lower frame post can be connected, preferably receiving grooves for receiving further vertical guide plates and / or horizontal shelves or energy channels, or horizontal supports on which the horizontal shelves or energy channels rest, can be provided.
  • the shelves also only extend up to the vertical plane of the aisle-side longitudinal edge of the slot-shaped opening, so that the warm air rising from the opening in the table top or in the work table also flows freely into the free space behind the shelves and into the ceiling area can.
  • At least one of the longitudinal edges of the slot-shaped opening, in particular the longitudinal edge on the aisle side, to support the flow movement of the air rising from the area under the table top has an arcuate rounded cross-sectional shape, preferably a trumpet-shaped or venturi-shaped cross-sectional shape. This ensures that the rising warm air is concentrated in an even narrower area, which additionally counteracts mixing with the supplied cold air.
  • the invention relates to the advantageous use of at least one work table with a frame and a table top which has a slot-like opening in the area of its rear side, through which warm air can flow upwards from the area below the table top, in a previously described arrangement for ventilation of a Laboratory room.
  • the supply air duct 8 has two lateral air supply sections 8a, 8b which extend along the aisle area 4 and which each have a multiplicity of circular air outlet openings 10 from which the supply air emerges laterally in the direction of the work tables 6a, 6b.
  • the two lateral air supply sections 8a, 8b are separated from one another by an essentially airtight central separating section which, for example, has 1/3 the width of the supply air duct 8 and has no air outlet openings.
  • the supply air duct 8 consists of a flexible textile material which is essentially impermeable to air and has the cross-sectional shape of a hanging D which is received on two spaced-apart supports 12a, 12b of a support frame, which is otherwise not shown in detail.
  • media lines 30 for, for example, water, gas, electricity, etc. are guided according to the invention, which are supported, for example, by a crossbeam, not specified, and by which Are accessible from the side.
  • an exhaust air duct 14 Arranged above the supply air duct 8 at a distance of, for example, 80 cm to 1 m is an exhaust air duct 14 which comprises two slot-like suction openings 14a, 14b which extend essentially parallel to the supply air duct 8 and which are arranged in the region of the ceiling 16 of the room 2, such that that an air roller 18a, 18b is formed on both sides of the aisle area 4, which in the area of the work tables 6a, 6b by heat sources 20a, 20b, such as screens, electrical appliances or cooking devices etc., generates warm air in the vertical direction in the area of the Ceiling 16 of the room 2 promotes from where it is deflected in the direction of the suction openings 14a, 14b and sucked into it by a blower, not shown, as indicated by the arrows in the Figure 1 is indicated.
  • the work table 6a is provided according to the invention with a slot-shaped opening 100 which is arranged in the table top 110 of the table 6a.
  • the work table 6b on the opposite right-hand side which is also drawn to illustrate the different flow conditions, is a conventional work table which has a closed table top under which the air heated by people and electrical devices 112b is stowed.
  • a vertical guide plate 114 is arranged in the area of the rear of the at least one work table 6a, which extends in the vertical direction up to the edge of the slot-like opening 100 and which serves as a guide surface on which the heated air rises .
  • the guide plate preferably comprises a first guide plate 114a below the table top, and / or a second guide plate 114b, which extends upward from the slot-like opening 100 toward the ceiling of the room.
  • the work table 6a has a frame 116 which has two rear frame posts 118, between which the slot-like opening 100 extends.
  • further posts 118b can be placed on the posts 118a in the vertical direction, which are provided in the same way as the posts 118 with vertical longitudinal grooves into which the guide plates 114a, 114b are inserted.
  • At least one of the longitudinal edges 120 of the slot-shaped opening 100 has an arcuate rounded cross-sectional shape 122 to support the flow movement of the inflowing air under the table top 110.
  • This cross-sectional shape 122 is preferably trumpet-shaped or venturi-shaped, as shown in FIG Fig. 2 is indicated. This configuration of the longitudinal edge as a flow profile results in a shift of the ascending warm air flow towards the second leiplate 114b, which results in a narrower flow zone, viewed from the side, in which the air rises.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Ventilation (AREA)

Description

Die Erfindung betrifft eine Anordnung zur Belüftung eines Raums, insbesondere eines Laborraums, gemäß dem Oberbegriff von Anspruch 1.The invention relates to an arrangement for ventilation of a room, in particular a laboratory room, according to the preamble of claim 1.

In der Gebäudetechnik werden für die Belüftung von Forschungslaboratorien z.B. für die chemische oder physikalische Forschung, Deckenkonstruktionen eingesetzt, bei denen die Leitungen für Zuluft, Abluft, sowie die im Labor benötigten technischen Gase, Flüssigkeiten, Strom- und Datenleitungen etc. auf einem an der Gebäudedecke montierten Tragrahmen angeordnet werden.In building technology, ventilation for research laboratories, e.g. used for chemical or physical research, ceiling constructions in which the lines for supply air, exhaust air, as well as the technical gases, liquids, power and data lines etc. required in the laboratory are arranged on a supporting frame mounted on the building ceiling.

Aus der WO 2012/031700 A1 ist in diesem Zusammenhang eine Anordnung zur Belüftung eines Laborraums bekannt, welcher einen Gangbereich besitzt, der zu beiden Seiten hin durch Arbeitstische begrenzt wird. Dabei wird über einen oberhalb des Gangbereichs angeordneten Zuluftkanal, der zwei seitliche Luftzufuhrabschnitte umfasst, die sich entlang des Gangbereichs erstrecken und die jeweils eine Vielzahl von kreisförmigen Luftaustrittsöffnungen aufweisen, aus denen die Zuluft seitlich in Richtung der Arbeitstische austritt, Frischluft in den Raum eingebracht, die über einen darüber angeordneten Abluftkanal wieder abgesaugt wird, der zwei sich im Wesentlichen parallel zum Zuluftkanal erstreckende schlitzartige Absaugöffnungen besitzt, die im Bereich der Decke des Raumes derart angeordnet sind, dass sich zu beiden Seiten des Gangbereichs eine Luftwalze bildet, über welche im Bereich der Arbeitstische erwärmte Zuluft in vertikaler Richtung in den Bereich der Decke des Raumes gelangt. Bei der beschriebenen Anordnung schließen die Tischplatten der Arbeitstische nach hinten hin bündig mit einer Rückwand ab, an der die Luft aus dem Bereich oberhalb der Tischplatten aufsteigt. Die unterhalb der Tischplatten erwärmte Luft strömt dabei in Richtung zum Zentrum des Gangbereichs über die Kante der Tischplatten hinweg und vermischt sich dort mit der von oben her zugeführten kühlen Frischluft. Hierdurch ergibt sich eine Durchmischung von zugeführter kühler Frischluft und aufsteigender Warmluft, was die Menge an zugeführter Frischluft und dadurch den für die Bereitstellung der Frischluft erforderlichen Energiebedarf erhöht. Die WO 2012/031700 A1 offenbart damit eine Anordnung zur Belüftung gemäß dem Oberbegriff von Anspruch 1.From the WO 2012/031700 A1 In this context, an arrangement for ventilating a laboratory room is known which has a corridor area which is delimited on both sides by work tables. Fresh air is introduced into the room via a supply air duct located above the aisle area, which comprises two lateral air supply sections that extend along the aisle area and each have a large number of circular air outlet openings from which the supply air emerges laterally towards the work tables is extracted again via an exhaust air duct arranged above it, which has two slot-like suction openings which extend essentially parallel to the supply air duct and which are arranged in the area of the ceiling of the room in such a way that an air roller forms on both sides of the aisle area, via which in the area of the work tables heated supply air reaches the ceiling of the room in the vertical direction. In the arrangement described, the table tops of the work tables are flush with the rear with a rear wall on which the air rises from the area above the table tops. The air heated below the table tops flows towards the center of the aisle area over the edge of the table tops and mixes there with the cool fresh air supplied from above. This results in a mixture of cool fresh air supplied and rising warm air, which is the amount of supplied Fresh air and thereby the energy required to provide the fresh air is increased. The WO 2012/031700 A1 thus discloses an arrangement for ventilation according to the preamble of claim 1.

Demgemäß ist es eine Aufgabe der vorliegenden Erfindung, eine Anordnung zur Belüftung eines Raums zu schaffen, mit der sich der Bedarf an Energie, die zur Bereitstellung der zugeführten gekühlten Frischluft benötigt wird, weiter reduzieren lässt.Accordingly, it is an object of the present invention to provide an arrangement for ventilating a room, with which the need for energy which is required to provide the cooled fresh air supplied can be further reduced.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale von Anspruch 1 gelöst. Weitere Merkmale der Erfindung sind in den Unteransprüchen beschrieben.This object is achieved by the features of claim 1. Further features of the invention are described in the subclaims.

Die Erfindung umfasst eine Anordnung zur Belüftung eines Raums, insbesondere eines Laborraums, welcher einen Gangbereich besitzt, der zu beiden Seiten hin durch Arbeitstische begrenzt wird, einen oberhalb des Gangbereichs angeordneten Zuluftkanal zur Zufuhr von bevorzugt gekühlter Frischluft in den Raum, die nachfolgend auch als Zuluft bezeichnet wird. Der Zuluftkanal kann entweder als langgestreckter durchgängiger Blechkanal mit einem bevorzugt rechteckigen Querschnitt und zwei seitlich der Längsachse angeordneten, nach unten gerichteten langgestreckten Schlitzdüsen ausgestaltet sein, welche von einem Ende des Blechkanals aus über eine Querleitung mit Frischluft versorgt werden. Ebenso ist es möglich, den Zuluftkanal durch mehrere langgestreckte , kassettenartige Teilabschnitte mit darin paarweise nach unten gerichteten Schlitzdüsen zusammen zu setzen, wobei die Teilabschnitte jeweils eine Länge im Bereich von 1,5 bis zu 4 m besitzen können und jeweils einzeln und getrennt von oben her über Zuluftrohre gespeist werden, die von einer zentralen Haupt-Zuluftleitung entspringen. Bei der bevorzugten Ausführungsform der Erfindung ist der Zuluftkanal jedoch ein im Querschnitt bevorzugt D-förmigen Hohlkörper aus einem vorzugsweise flexiblen Werkstoff, z.B. aus einem luftdurchlässigen Textil oder aus einer Kunststofffolie, der eine Vielzahl von Luftaustrittsöffnungen besitzt, aus denen die Zuluft oberhalb des Gangbereichs austritt.The invention includes an arrangement for ventilation of a room, in particular a laboratory room, which has a corridor area which is delimited on both sides by work tables, an inlet air duct arranged above the aisle area for the supply of preferably cooled fresh air into the room, which is subsequently also referred to as supply air referred to as. The supply air duct can either be configured as an elongated continuous sheet metal duct with a preferably rectangular cross-section and two elongated slot nozzles arranged on the side of the longitudinal axis and directed downwards, which are supplied with fresh air from one end of the sheet metal duct via a transverse line. It is also possible to assemble the supply air duct by means of several elongated, cassette-like sections with slot nozzles pointing downwards in pairs, whereby the sections can each have a length in the range from 1.5 to 4 m and each individually and separately from above are fed via supply air pipes that originate from a central main supply air line. In the preferred embodiment of the invention, however, the supply air duct is a preferably D-shaped hollow body made of a preferably flexible material, e.g. from an air-permeable textile or from a plastic film that has a large number of air outlet openings from which the supply air exits above the aisle area.

Der Zuluftkanal besitzt bei dieser Ausführungsform zwei seitliche, bevorzugt als Streifen ausgestaltete Luftzufuhrabschnitte, die sich entlang des Gangbereichs erstrecken und jeweils eine Vielzahl von kreisförmigen Luftaustrittsöffnungen aufweisen, die bevorzugt als Perforation z.B. mit Hilfe eines Lasers oder dergleichen in die Luftzufuhrabschnitte eingebracht werden und aus denen die Zuluft bevorzugt ausschließlich in seitlicher Richtung, d.h. schräg im Winkel zur vertikalen Mittenachse des Gangbereichs, in Richtung der Arbeitstische austritt. Die beiden seitlichen Luftzufuhrabschnitte sind durch einen im Wesentlichen luftundurchlässigen zentralen Trennabschnitt voneinander beabstandet, dessen zentrale Längsachse vorzugsweise entlang der zentralen Mittenebene des Gangbereichs verläuft und der den ersten und den zweiten Luftzufuhrabschnitts voneinander trennt.In this embodiment, the supply air duct has two lateral air supply sections, preferably in the form of strips, which extend along the aisle area and each have a multiplicity of circular air outlet openings, which are preferably introduced into the air supply sections as perforations, for example with the aid of a laser or the like, and from which the supply air preferably exits exclusively in the lateral direction, ie at an angle to the vertical central axis of the aisle area, in the direction of the work tables. The two lateral air supply sections are spaced apart from one another by an essentially air-impermeable central separating section, the central longitudinal axis of which preferably runs along the central central plane of the aisle area and which separates the first and second air supply sections.

In einem Abstand von vorzugsweise 0,8 m bis 1,5 m ist oberhalb des Zuluftkanals ein Abluftkanal angeordnet, der sich in gleicher Weise wie auch der Zuluftkanal bevorzugt entlang der vertikalen Mittenebene des Gangbereichs erstreckt und die verbrauchte, und gegenüber der Zuluft erwärmte Abluft aus dem Raum abführt.At a distance of preferably 0.8 m to 1.5 m, an exhaust air duct is arranged above the supply air duct, which in the same way as the supply air duct preferably extends along the vertical center plane of the aisle area and exhausts the used and heated exhaust air compared to the supply air leads away from the room.

Der Abluftkanal weist vorzugsweise zwei sich im Wesentlichen parallel zum Zuluftkanal erstreckende schlitzartige Absaugöffnungen auf, die im Bereich der Gebäudedecke des Raumes an einer möglichst hohen Stelle angeordnet sind.The exhaust air duct preferably has two slot-like suction openings which extend essentially parallel to the supply air duct and which are arranged at the highest possible point in the area of the building ceiling of the room.

Der Ausströmwinkel und die Größe der Schlitzdüsen des Zuluftkanals gemäß der zuerst beschriebenen Ausführungsform, bzw. die Größe und die Anzahl der in den beiden seitlichen Luftzufuhrabschnitten angeordneten Luftaustrittsöffnungen sowie die Breite des Trennabschnitts der zuletzt beschriebenen Ausführungsform des Zuluftkanals sind in gleicher Weise wie die Größe und Form der Luftabsaugöffnungen des Abluftkanals dabei derart gewählt, dass sich zu beiden Seiten des Gangbereichs eine Luftwalze oder ein Luftwirbel bildet, dessen Zentrum bevorzugt jeweils in etwa im Bereich der gangseitigen Kante der Arbeitstische und bevorzugt auf Höhe des halben Abstandes zwischen Zuluftkanal und Boden liegt.The outflow angle and the size of the slot nozzles of the supply air duct according to the embodiment described first, or the size and number of air outlet openings arranged in the two lateral air supply sections and the width of the separating section of the last-described embodiment of the supply air duct are in the same way as the size and shape of the air extraction openings of the exhaust air duct is selected such that an air roller or an air vortex forms on both sides of the aisle area, the center of which is preferably approximately in the region of the aisle-side edge of the work tables and preferably at half the distance between the supply air duct and the floor.

Obgleich der Zuluftkanal, bzw. dessen Hohlkörper bei der zuletzt beschriebenen bevorzugten Ausführungsform auch aus einem luftdurchlässigen textilen Werkstoff bestehen kann, besteht dieser besonders bevorzugt aus einer dünnen, insbesondere auch lichtdurchlässigen Membran mit geringer Luftdurchlässigkeit, beispielsweise aus einem kunststoffbeschichteten Textilgewebe. Der Zuluftkanal erstreckt sich hierbei vorzugsweise über die gesamt Länge des Gangbereichs des Labors hinweg, und kann im Falle von mehreren nacheinander angeordneten Laborarbeitsplätzen bevorzugt auch über die gesamte Länge der Mittelgänge aller Labore hinweg verlaufen. Die bevorzugt als Mikroperforation mit einer Lochgröße im Bereich zwischen 0,1 mm und 1 mm, bevorzugt 0,4 bis 0,6 mm und besonders bevorzugt 0,5 mm in das als solches im Wesentlichen luftundurchlässige Material des Zuluftkanals bei der bevorzugten Ausführungsform eingebrachte Perforation ist im Bereich des zentralen Trennabschnitts zur Bildung desselben unterbrochen. Die Anordnung der Luftaustrittsöffnungen der Mikroperforation erfolgt in vorteilhafter Weise in Reihen quer zur Längsachse des Gangbereichs mit einem Abstand von einem bis einigen cm, bevorzugt 2 cm. Innerhalb einer Reihe haben die Luftaustrittsöffnungen bei der bevorzugten Ausführungsform der Erfindung einen Abstand von ca. 4 mm, wodurch sich im Falle eines Standardlabors eine auf die Fläche bezogene Luftwechselrate im Bereich zwischen 12,5 - 37,5 m3/m2/h ergibt, was in etwa der 4- bis 12-fachen Luftwechselrate in einem Standardlabor entspricht.Although the supply air duct or its hollow body can also consist of an air-permeable textile material in the preferred embodiment described last, it particularly preferably consists of a thin, in particular also translucent membrane with low air permeability, for example made of a plastic-coated textile fabric. The supply air duct preferably extends over the entire length of the aisle area of the laboratory and, in the case of a plurality of laboratory workstations arranged one after the other, can preferably also extend over the entire length of the central aisles of all laboratories. The perforation which is preferably introduced as a microperforation with a hole size in the range between 0.1 mm and 1 mm, preferably 0.4 to 0.6 mm and particularly preferably 0.5 mm in the material of the supply air duct which is essentially impermeable to air in the preferred embodiment is interrupted in the area of the central separating section to form the same. The air outlet openings of the microperforation are advantageously arranged in rows transverse to the longitudinal axis of the aisle area at a distance of one to a few cm, preferably 2 cm. In a row, the air outlet openings in the preferred embodiment of the invention have a distance of approximately 4 mm, which in the case of a standard laboratory results in an air exchange rate in the area between 12.5 and 37.5 m 3 / m 2 / h , which is about 4 to 12 times the air exchange rate in a standard laboratory.

Die Erfindung zeichnet sich dadurch aus, dass wenigstens einer der Arbeitstische, bevorzugt jedoch alle Arbeitstische, im Bereich ihrer Rückseite eine schlitzartige Öffnung aufweisen, durch die hindurch Warmluft aus dem Bereich unter der Tischplatte, die z.B. durch elektrische Geräte wie Arbeitsplatzrechner, Kühlschränke, Steckdosenleisten etc. sowie auch die Körperwärme von an den Tischen arbeitenden Personen erzeugt wird, nach oben hin aus diesem Bereich abströmen kann. Die schlitzartige Öffnung kann entweder in der Tischplatte des Arbeitstisches geformt sein, oder kann rückseits des hinteren Randes der Tischplatte durch eine Ausnehmung gebildet werden, die sich bevorzugt zwischen den beiden hinteren vertikalen Pfosten oder Tischbeinen des Tisches erstreckt, wenn dieser in bekannter Weise einen tragenden Rahmen, bevorzugt aus Metall, besitzt.The invention is characterized in that at least one of the work tables, but preferably all work tables, have a slot-like opening in the area of their rear side, through which warm air from the area under the table top, e.g. is generated by electrical devices such as workstations, refrigerators, power strips etc. as well as the body heat of people working at the tables, can flow upwards out of this area. The slot-like opening can either be formed in the table top of the worktable, or can be formed on the rear of the rear edge of the table top by a recess which preferably extends between the two rear vertical posts or table legs of the table, if this in a known manner has a supporting frame , preferably made of metal.

Bei der bevorzugten Ausführungsform der Erfindung sind im Bereich der Rückseite der Arbeitstische vertikale Leitplatten angeordnet, die sich bevorzugt sowohl im Bereich unterhalb, als auch im Bereich oberhalb der Tischplatten in vertikaler Richtung erstrecken, und die als Führungsflächen dienen, an denen die erwärmte Luft aufsteigt. Durch den sich dabei einstellenden Coanda-Effekt wird die aufsteigende Warmluft aus dem Bereich unterhalb der Tischplatte in Richtung zur Führungsfläche hin bewegt und während des Aufströmens zu dieser hin gedrängt, was in vorteilhafter Weise dazu führt, dass durch die Führungsfläche eine Kanalisierung der aufsteigenden Luft entsteht, wodurch diese sich nicht mehr so stark mit der von oben her nachströmenden kühlen Frischluft vermischt. Hierdurch wir der Energiebedarf der erfindungsgemäßen Anordnung noch weiter verringert.In the preferred embodiment of the invention, vertical guide plates are arranged in the area of the rear of the work tables, which preferably extend in the vertical direction both in the area below and in the area above the table tops, and which serve as guide surfaces on which the heated air rises. The resulting Coanda effect moves the rising warm air from the area below the table top towards the guide surface and pushes it towards it during the upflow, which advantageously leads to a channeling of the rising air through the guide surface , which means that it no longer mixes so strongly with the cool fresh air flowing in from above. This further reduces the energy requirement of the arrangement according to the invention.

Bei der bevorzugten Ausführungsform der Erfindung ist eine erste Leitplatte unterhalb der Tischplatte angeordnet ist, und/oder eine zweite Leitplatte erstreckt von der schlitzartigen Öffnung aus nach oben hin in Richtung zur Decke des Raums.In the preferred embodiment of the invention, a first guide plate is arranged below the table top, and / or a second guide plate extends upwards from the slot-like opening towards the ceiling of the room.

Um bei rückseitig aneinander gestellten Tischen die Vorteile der erfindungsgemäßen Anordnung in vollem Umfang nutzen zu können, ist die zweite Leitplatte vorzugsweise aus einem insbesondere für Laserlicht undurchsichtigen Werkstoff und/oder einem feuerhemmenden Werkstoff oder einem Werkstoff mit hoher mechanischer Festigkeit, insbesondere einem explosionsresistenten Werkstoff, geformt. Hierdurch erfüllt die Leitplatte in vorteilhafter Weise gleichzeitig auch noch die Funktion eines Schutzes gegen Laserstrahlung, einer Brandschutzbarriere und/oder eines Splitterschutzes.In order to be able to take full advantage of the arrangement according to the invention when the tables are placed one behind the other, the second guide plate is preferably formed from a material which is particularly opaque to laser light and / or a fire-retardant material or a material with high mechanical strength, in particular an explosion-resistant material . As a result, the guide plate advantageously also fulfills the function of protection against laser radiation, a fire protection barrier and / or splinter protection.

Alternativ kann die zweite Leitplatte auch aus einem durchsichtigen Werkstoff, bevorzugt aus Glas oder Plexiglas, bestehen, um trotz einer räumlichen Trennung zweier rückseitig einander gegenüberliegender Arbeitsplätze die strömungsmäßigen Vorteile zu erhalten und gleichzeitig eine Durchsicht zu ermöglichen.Alternatively, the second guide plate can also be made of a transparent material, preferably of glass or plexiglass, in order to maintain the flow-related advantages despite the spatial separation of two workplaces opposite one another on the rear and at the same time to enable a view through.

Der wenigstens eine Arbeitstisch weist vorzugweise einen Rahmen auf, der zwei rückseitige Rahmenpfosten besitzt, zwischen denen sich die schlitzartige Öffnung erstreckt. Die beiden rückseitigen Pfosten sind dabei bevorzugt als Metall oder Kunststoffprofile ausgebildet, die in vertikaler Richtung über aufgesetzte weitere Pfosten verlängerbar sind. In den aufgesetzten weiteren Pfosten, die vorzugsweise über Verbindungselemente fest mit den unteren Rahmenpfosten verbindbar sind, können bevorzugt Aufnahmenuten zur Aufnahme von weiteren vertikalen Leitplatten und/oder von horizontalen Regalböden oder Energiekanälen, bzw. horizontalen Trägern, auf denen die horizontalen Regalböden bzw. Energiekanäle aufliegen, vorgesehen sein. Die Regalböden erstrecken sich dabei ebenfalls lediglich bis an die vertikale Ebene des gangseitigen Längsrandes der schlitzförmigen Öffnung heran, so dass die aus der Öffnung in der Tischplatte, bzw. im Arbeitstisch aufsteigende Warmluft in dem entstehenden Freiraum hinter den Regalböden ebenfalls ungehindert bis in den Deckenbereich aufströmen kann.The at least one work table preferably has a frame which has two rear frame posts, between which the slot-like opening extends. The two rear posts are preferably designed as metal or plastic profiles, which can be extended in the vertical direction via additional posts placed on them. In the attached further posts, which are preferably fixed using connecting elements the lower frame post can be connected, preferably receiving grooves for receiving further vertical guide plates and / or horizontal shelves or energy channels, or horizontal supports on which the horizontal shelves or energy channels rest, can be provided. The shelves also only extend up to the vertical plane of the aisle-side longitudinal edge of the slot-shaped opening, so that the warm air rising from the opening in the table top or in the work table also flows freely into the free space behind the shelves and into the ceiling area can.

Gemäß der Erfindung weist wenigstens einer der Längsränder der schlitzförmigen Öffnung, insbesondere der auf der Seite des Gangbereichs liegende gangseitige Längsrand, zur Unterstützung der Strömungsbewegung der aus dem Bereich unter der Tischplatte aufsteigenden Luft eine bogenförmig abgerundete Querschnittsform, bevorzugt eine trompetenförmige oder venturiförmige Querschnittsform, auf. Hierdurch wird erreicht, dass die aufsteigende Warmluft auf einen noch engeren Bereich konzentriert wird, was einer Durchmischung mit der zugeführten Kaltluft zusätzlich entgegen wirkt.According to the invention, at least one of the longitudinal edges of the slot-shaped opening, in particular the longitudinal edge on the aisle side, to support the flow movement of the air rising from the area under the table top, has an arcuate rounded cross-sectional shape, preferably a trumpet-shaped or venturi-shaped cross-sectional shape. This ensures that the rising warm air is concentrated in an even narrower area, which additionally counteracts mixing with the supplied cold air.

Schließlich betrifft die Erfindung die vorteilhafte Verwendung wenigstens eines Arbeitstischs mit einem Rahmen und einer Tischplatte, der im Bereich seiner Rückseite eine schlitzartige Öffnung aufweist, durch die hindurch Warmluft aus dem Bereich unterhalb der Tischplatte nach oben abströmen kann, in einer zuvor beschriebenen Anordnung zur Belüftung eines Laborraums. Obgleich die Erfindung zuvor und nachfolgend ausschließlich am Beispiel eines Laborraums beschrieben wurde, ist die erfindungsgemäße Anordnung gleichermaßen auch zur Belüftung von Büroräumem einsetzbar, die vom Schutz her mit eingeschlossen sein sollen.Finally, the invention relates to the advantageous use of at least one work table with a frame and a table top which has a slot-like opening in the area of its rear side, through which warm air can flow upwards from the area below the table top, in a previously described arrangement for ventilation of a Laboratory room. Although the invention has been described above and below exclusively using the example of a laboratory room, the arrangement according to the invention can equally be used for ventilation of office rooms which are to be included for protection.

Die Erfindung wird nachfolgend mit Bezug auf die Zeichnungen anhand einer bevorzugten Ausführungsform beschrieben. In den Zeichnungen zeigen:

Fig. 1
eine schematische Querschnittsansicht eines Laborraums mit einer erfindungsgemäßen Belüftungsanordnung,
Fig. 2
eine vergrößerte Detailansicht eines Arbeitstisches im Bereich der schlitzartigen Öffnung, und
Fig. 3
ein schematische räumliche Darstellung eines bei der erfindungsgemäßen Anordnung eingesetzten Arbeitstischs.
The invention is described below with reference to the drawings based on a preferred embodiment. The drawings show:
Fig. 1
1 shows a schematic cross-sectional view of a laboratory room with a ventilation arrangement according to the invention,
Fig. 2
an enlarged detail view of a work table in the area of the slot-like opening, and
Fig. 3
is a schematic spatial representation of a work table used in the arrangement according to the invention.

Wie in Fig. 1 gezeigt ist, umfasst eine erfindungsgemäße Anordnung 1 zur Belüftung eines Raums 2, insbesondere eines Laborraums, welcher einen Gangbereich 4 besitzt, der zu beiden Seiten hin durch Arbeitstische 6a, 6b begrenzt wird, einen oberhalb des Gangbereichs angeordneten Zuluftkanal 8, über den bevorzugt gekühlte Frischluft von einem nicht näher gezeigten Frischlufterzeuger oder einem Frischluftgebläse zugeführt wird. Der Zuluftkanal 8 besitzt zwei seitliche Luftzufuhrabschnitte 8a, 8b, die sich entlang des Gangbereichs 4 erstrecken und die jeweils eine Vielzahl von kreisförmigen Luftaustrittsöffnungen 10 aufweisen, aus denen die Zuluft seitlich in Richtung der Arbeitstische 6a, 6b austritt. Die beiden seitlichen Luftzufuhrabschnitte 8a, 8b werden durch einen im Wesentlichen luftdichten zentraler Trennabschnitt voneinander getrennt, der z.B. 1/3 der Breite des Zuluftkanals 8 besitzt und keine Luftaustrittsöffnungen aufweist. Bei der in Fig. 1 gezeigten Ausführungsform der Erfindung besteht der Zuluftkanal 8 aus einem flexiblen textilen Werkstoff, der im Wesentlichen luftundurchlässig ist und die Querschnittsform eines hängenden D besitzt, welches an zwei beabstandeten Trägern 12a, 12b eines sonst nicht näher gezeigten Tragrahmens aufgenommen ist. Oberhalb des in zugehörige Längsnuten der Träger 12a, 12b eingeklemmten und bevorzugt gespannten ebenen Abschnitts des D-förmigen Zuluftkanals 8 sind erfindungsgemäß Medienleitungen 30 für z.B. Wasser, Gas, Strom etc. geführt, die z.B. durch eine nicht näher bezeichnete Traverse abgestützt werden und von der Seite aus zugänglich sind.As in Fig. 1 is shown, an arrangement 1 according to the invention for ventilating a room 2, in particular a laboratory room, which has a corridor area 4, which is delimited on both sides by work tables 6a, 6b, a supply air duct 8 arranged above the aisle area, via which preferably cooled fresh air is supplied by a fresh air generator or a fresh air blower, not shown. The supply air duct 8 has two lateral air supply sections 8a, 8b which extend along the aisle area 4 and which each have a multiplicity of circular air outlet openings 10 from which the supply air emerges laterally in the direction of the work tables 6a, 6b. The two lateral air supply sections 8a, 8b are separated from one another by an essentially airtight central separating section which, for example, has 1/3 the width of the supply air duct 8 and has no air outlet openings. At the in Fig. 1 In the embodiment of the invention shown, the supply air duct 8 consists of a flexible textile material which is essentially impermeable to air and has the cross-sectional shape of a hanging D which is received on two spaced-apart supports 12a, 12b of a support frame, which is otherwise not shown in detail. Above the flat section of the D-shaped supply air duct 8, which is clamped into the associated longitudinal grooves of the supports 12a, 12b and is preferably tensioned, media lines 30 for, for example, water, gas, electricity, etc. are guided according to the invention, which are supported, for example, by a crossbeam, not specified, and by which Are accessible from the side.

Oberhalb des Zuluftkanals 8 ist in einem Abstand von z.B. 80 cm bis Im ein Abluftkanal 14 angeordnet, der zwei sich im Wesentlichen parallel zum Zuluftkanal 8 erstreckende schlitzartige Absaugöffnungen 14a, 14b umfasst, die im Bereich der Decke 16 des Raumes 2 angeordnet sind, derart, dass sich zu beiden Seiten des Gangbereichs 4 jeweils eine Luftwalze 18a, 18b bildet, die die im Bereich der Arbeitstische 6a, 6b durch Wärmequellen 20a, 20b, wie z.B. Bildschirme, elektrische Arbeitsgeräte oder Kocheinrichtungen etc. erzeugte Warmluft in vertikaler Richtung in den Bereich der Decke 16 des Raumes 2 fördert, von wo aus sie in Richtung der Absaugöffnungen 14a, 14b umgelenkt und in diese hinein durch ein nicht näher gezeigtes Gebläse abgesaugt wird, wie dies durch die nicht näher bezeichneten Pfeile in den Figur 1 angedeutet ist.Arranged above the supply air duct 8 at a distance of, for example, 80 cm to 1 m is an exhaust air duct 14 which comprises two slot-like suction openings 14a, 14b which extend essentially parallel to the supply air duct 8 and which are arranged in the region of the ceiling 16 of the room 2, such that that an air roller 18a, 18b is formed on both sides of the aisle area 4, which in the area of the work tables 6a, 6b by heat sources 20a, 20b, such as screens, electrical appliances or cooking devices etc., generates warm air in the vertical direction in the area of the Ceiling 16 of the room 2 promotes from where it is deflected in the direction of the suction openings 14a, 14b and sucked into it by a blower, not shown, as indicated by the arrows in the Figure 1 is indicated.

Wie der Darstellung der Fig. 1 weiterhin auf der linken Seite entnommen werden kann, ist der Arbeitstisch 6a erfindungsgemäß mit einer schlitzförmigen Öffnung 100 versehen, die in der Tischplatte 110 des Tisches 6a angeordnet ist. Der Arbeitstisch 6b auf der gegenüberliegenden rechten Seite, der zur Verdeutlichung der unterschiedlichen Strömungsverhältnisse mit eingezeichnet ist, ist hingegen ein herkömmlicher Arbeitstisch, der eine geschlossene Tischplatte aufweist, unter der sich die von Personen und elektrischen Geräten 112b erwärmte Luft staut.How the representation of the Fig. 1 can still be seen on the left-hand side, the work table 6a is provided according to the invention with a slot-shaped opening 100 which is arranged in the table top 110 of the table 6a. The work table 6b on the opposite right-hand side, which is also drawn to illustrate the different flow conditions, is a conventional work table which has a closed table top under which the air heated by people and electrical devices 112b is stowed.

Wie der Fig. 1 und 2 weiterhin entnommen werden kann, ist im Bereich der Rückseite des wenigstens einen Arbeitstischs 6a eine vertikale Leitplatte 114 angeordnet ist, welche sich in vertikaler Richtung bis an den Rand der schlitzartigen Öffnung 100 heran erstreckt, und welche als Führungsfläche dient, an der die erwärmte Luft aufsteigt. Die Leitplatte umfasst dabei vorzugsweise eine erste Leitplatte 114a unterhalb der Tischplatte, und/oder eine zweite Leitplatte 114b, die sich von der schlitzartigen Öffnung 100 aus nach oben hin in Richtung zur Decke des Raums hin erstreckt.Again Fig. 1 and 2nd Furthermore, a vertical guide plate 114 is arranged in the area of the rear of the at least one work table 6a, which extends in the vertical direction up to the edge of the slot-like opening 100 and which serves as a guide surface on which the heated air rises . The guide plate preferably comprises a first guide plate 114a below the table top, and / or a second guide plate 114b, which extends upward from the slot-like opening 100 toward the ceiling of the room.

Wie der Darstellung der Fig. 2 und 3 im Detail entnommen werden kann, weist der Arbeitstisch 6a einen Rahmen 116 auf, der zwei rückseitige Rahmenpfosten 118 besitzt, zwischen denen sich die schlitzartige Öffnung 100 erstreckt. Wie in Fig. 2 durch die gepunkteten Linien angedeutet ist, können auf die Pfosten 118a in vertikaler Richtung weitere Pfosten 118b aufgesetzt sein, welche in gleicher Weise wie die Pfosten 118 mit vertikalen Längsnuten versehen sind, in die die Leitplatten 114a, 114b eingeschoben werden.How the representation of the Fig. 2 and 3rd can be seen in detail, the work table 6a has a frame 116 which has two rear frame posts 118, between which the slot-like opening 100 extends. As in Fig. 2 through the dotted lines, further posts 118b can be placed on the posts 118a in the vertical direction, which are provided in the same way as the posts 118 with vertical longitudinal grooves into which the guide plates 114a, 114b are inserted.

Schließlich weist wenigstens einer der Längsränder 120 der schlitzförmigen Öffnung 100, insbesondere der auf der Seite des Gangbereichs liegende gangseitige Längsrand, zur Unterstützung der Strömungsbewegung der aufströmenden Luft unter der Tischplatte 110 eine bogenförmig abgerundete Querschnittsform 122 auf. Bevorzugt ist diese Querschnittsform 122 trompetenförmig oder venturiförmig ausgebildet, wie dies in Fig. 2 angedeutet ist. Durch diese Ausgestaltung des Längsrandes als Strömungsprofil ergibt sich eine Verlagerung der aufsteigenden Warmluftströmung in Richtung zur zweiten Leiplatte 114b hin, wodurch sich eine von der Seite aus betrachtet schmalere Strömungszone ergibt, in der die Luft aufsteigt.Finally, at least one of the longitudinal edges 120 of the slot-shaped opening 100, in particular the longitudinal edge on the aisle side located on the side of the aisle area, has an arcuate rounded cross-sectional shape 122 to support the flow movement of the inflowing air under the table top 110. This cross-sectional shape 122 is preferably trumpet-shaped or venturi-shaped, as shown in FIG Fig. 2 is indicated. This configuration of the longitudinal edge as a flow profile results in a shift of the ascending warm air flow towards the second leiplate 114b, which results in a narrower flow zone, viewed from the side, in which the air rises.

Claims (7)

  1. Arrangement for ventilating a room (2), wherein the arrangement comprises a room and workbenches (6a, 6b) and the room has an aisle region (4) which is delimited to both sides by the workbenches (6a, 6b), having a supply-air duct (8) arranged above the aisle region (4) and intended for supplying fresh air into the room (2) and, arranged above said supply-air duct, an exhaust-air duct (14) for removing exhaust air from the room (2), wherein the supply-air duct (8) comprises two lateral air-supply portions (8a, 8b) or slotted outlets and a substantially air-tight central separating portion (8c), and the exhaust-air duct (14) has two slot-like suction openings (14a, 14b) which extend substantially parallel to the supply-air duct (8) and which are arranged in the region of the ceiling (16) of the room (2), in such a way that there is formed, on both sides of the aisle region (4), a roll of air (18a, 18b) via which supply air heated in the region of the workbenches (6a, 6b) passes in the vertical direction into the region (28) of the ceiling (16) of the room (2),
    characterized
    in that at least one of the workbenches (6a) has a slot-like opening (100) in the region of its rear side, through which opening warm air can flow off upwardly out of the region below the benchtop (110), and
    in that, to assist the flow movement of the upflowing air below the benchtop (110), at least one of the longitudinal edges (120) of the slot-shaped opening (100) has an arcuately rounded cross-sectional shape (122).
  2. Arrangement according to Claim 1,
    characterized
    in that a vertical baffle (114a, 114b) is arranged in the region of the rear side of the at least one workbench (6a), which extends in the vertical direction to the edge of the slot-like opening (100) and serves as a guide surface at which the heated air rises.
  3. Arrangement according to Claim 2,
    characterized
    in that the baffle (114a, 114b) comprises a first and/or a second baffle, wherein the first baffle (114a) is arranged below the benchtop (110), and/or the second baffle (114b) extends upwardly from the slot-like opening (100) in the direction of the ceiling of the room.
  4. Arrangement according to Claim 3,
    characterized
    in that the second baffle (114b) consists of a material which is in particular impervious to laser light and/or of a fire-retardant material or of a material having high mechanical strength, in particular an explosion-resistant material.
  5. Arrangement according to Claim 3,
    characterized
    in that the second baffle (114b) consists of a transparent material, preferably of glass or plexiglass.
  6. Arrangement according to one of the preceding claims,
    characterized in that
    the at least one workbench (6a) has a frame (116) which has two rear frame posts (118a) between which the slot-like opening (100) extends, and in that the posts (118a) can be lengthened in the vertical direction by means of attached further posts (118b), wherein the further posts have receiving grooves for receiving baffles (114a, 114b) and/or horizontal shelves or energy channels.
  7. Use in an arrangement according to one of the preceding claims of a workbench (6a) having a frame (116) and a benchtop (110) which has a slot-like opening (100) in the region of its rear side, through which opening warm air can flow off upwardly out of the region below the benchtop (110), wherein, to assist the flow movement of the upflowing air below the benchtop (110), at least one of the longitudinal edges (120) of the slot-shaped opening (100) has an arcuately rounded cross-sectional shape (122).
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JP7262925B2 (en) * 2018-03-14 2023-04-24 ホーチキ株式会社 heat detector
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