EP2614196A1 - Système de ventilation d'une pièce, notamment d'un laboratoire - Google Patents

Système de ventilation d'une pièce, notamment d'un laboratoire

Info

Publication number
EP2614196A1
EP2614196A1 EP11749743.8A EP11749743A EP2614196A1 EP 2614196 A1 EP2614196 A1 EP 2614196A1 EP 11749743 A EP11749743 A EP 11749743A EP 2614196 A1 EP2614196 A1 EP 2614196A1
Authority
EP
European Patent Office
Prior art keywords
supply air
air
air duct
duct
room
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
EP11749743.8A
Other languages
German (de)
English (en)
Other versions
EP2614196B1 (fr
Inventor
Hansjürg Lüdi
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.)
H LUEDI and CO AG
Original Assignee
H LUEDI and CO AG
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 H LUEDI and CO AG filed Critical H LUEDI and CO AG
Publication of EP2614196A1 publication Critical patent/EP2614196A1/fr
Application granted granted Critical
Publication of EP2614196B1 publication Critical patent/EP2614196B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02Ducting arrangements
    • F24F13/06Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/062Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser having one or more bowls or cones diverging in the flow direction
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/006Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation with means for hanging lighting fixtures or other appliances to the framework of the ceiling
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04BGENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B9/00Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/02Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation having means for ventilation or vapour discharge
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02Ducting arrangements
    • F24F13/06Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/068Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser formed as perforated walls, ceilings or floors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F7/00Ventilation
    • F24F7/04Ventilation with ducting systems, e.g. by double walls; with natural circulation
    • F24F7/06Ventilation 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
    • F24F7/08Ventilation 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02Ducting arrangements
    • F24F13/06Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F2013/0608Perforated ducts
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00Details or features not otherwise provided for
    • F24F2221/14Details or features not otherwise provided for mounted on the ceiling

Definitions

  • the invention relates to an arrangement for ventilating a room, in particular a laboratory room, according to the preamble of claim 1.
  • an arrangement for ventilating a room, in particular a laboratory space, which has a passage area which is delimited on both sides by work tables, a supply duct arranged above the passage area for supplying preferably cooled fresh air into the room, which hereinafter also as Supply air is called.
  • the supply air duct has a multiplicity of air outlet openings, from which the supply air exits above the passage area.
  • an exhaust air duct is arranged above the supply air duct, which in the same way as well as the supply air duct preferably along the vertical center plane of the Gang range extends and dissipates the spent, and compared to the supply air heated exhaust air from the room.
  • the supply air duct has two lateral air circulation sections, preferably designed as strips, which extend along the passage area and each have a multiplicity of circular air outlet openings, which are preferably used as perforations, e.g. be introduced by means of a laser or the like in the air supply sections and from which the supply air preferably exclusively in the lateral direction, i. obliquely at an angle to the vertical center axis of the aisle area, exiting in the direction of the work tables.
  • the two lateral air supply sections are spaced from each other by a substantially air-impermeable central partition section, the central longitudinal axis of which preferably extends along the central center plane of the passage area and which separates the first and second air supply sections.
  • the exhaust air duct has two slit-like suction openings extending essentially parallel to the supply air duct, which are arranged at the highest possible point in the area of the building ceiling of the room.
  • the size and the number of arranged in the two lateral Beerzubowabêten Lochaustrittsöfrhungen and the width of the separation section and the size and shape of Gutabsaugöffhungen the exhaust duct are chosen in accordance with the invention such that forms an air roll or an air vortex on both sides of the aisle area Center preferably in each case approximately in the region of the gangway side edge of the work tables and preferably at the height of half the distance between the supply air duct and the ground.
  • the supply air channel of a thin, preferably transparent membrane with low air permeability for example, a plastic-coated textile fabric.
  • the supply air duct preferably extends over the entire length of the passage area of the laboratory, and, in the case of a plurality of laboratory workstations arranged in succession, can preferably also extend over the entire length of the aisles of all laboratories.
  • the perforation 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, into the material of the supply air channel which is substantially impermeable to air is in the range of interrupted central separation section to form the same.
  • the arrangement of the air outlet openings of the microperforation is advantageously carried out in rows transversely to the longitudinal axis of the aisle area with 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 about 4 mm, which results in the case of a standard laboratory on the surface air exchange rate in the range between 12.5 - 37.5 m / m / h, which roughly equivalent to 4 to 12 times the air exchange rate in a standard laboratory.
  • the invention has the advantage that the amount of supply air supplied by a change in the number and diameter of the air outlet openings in the lateral air supply sections can be changed very easily, so that the air exchange rates in particular already installed air supply channels by introducing a corresponding number of additional holes or It is also possible to increase slits in the air supply sections very cost-effectively in order, for example, to be able to subsequently take account of changed use of the laboratory.
  • a blow-off pulse is generated which permits microinduction at the individual holes as a result of the strip arrangement and thus mixes the cooler supply air with a certain amount of warm room air already in the immediate vicinity of the exit region of an air outlet opening, which results in advantageously results in that the output speed of the exiting air is reduced.
  • the leaked supply air then joins after a short distance approximately in the middle of each air outlet to a single, downwardly directed wide jet of air.
  • This jet of air descends through the previously induced, ie with one out of one Depending on the air exchange rate and supply air temperature between 0.20 m / s and max., The output air emerging from the incoming air jet mixed warm room air, only slowly from the ground, whereby the occurring in the aisle area output speeds of the supply air. 0.25 m / s lie. Since the aforementioned values, even at very high air exchange rates and low supply air temperatures, such as are required, for example, for air-conditioning a laboratory in summer, are advantageously below those speeds which people perceive as draft, the use of the arrangement according to the invention results in the corridor area consistently climatically pleasant working conditions.
  • the exhaust duct is at a distance of preferably 2 to 5 cm below the building ceiling, i. usually made of concrete floor slab of the room, usually located at a height of e.g. 2.8 m or 3 m above the floor of the aisle area.
  • the Absaugöffhungen are doing at the top of the exhaust duct and are designed in such a way that sets over the entire length of the exhaust duct between the building ceiling and the channel, a substantially constant negative pressure. This can take place, for example, in that the slot-like air suction openings of the suction channel increasingly widen in the direction away from the suction fan, or the number and / or diameter of air suction holes introduced locally into the slot-shaped suction openings is increased in the direction away from the suction fan.
  • the extraction of the used room air takes place at the absolutely highest possible point in the room and preferably also over the greatest possible length of the passage area.
  • the advantage of the arrangement according to the invention is that the warm exhaust air and the cool supply air are supplied to one another within the room in different and substantially separate areas be discharged without it being a significant Mixing of the cool supply air and the heated by the heat sources and the people within the corridor area exhaust air comes.
  • a temperature of the air As a flow simulation based on a standard laboratory has shown, at an average temperature of 22.5 ° C in the corridor immediately above the ceiling in the area of the suction slots a temperature of the air of 30 ° C, which results from the fact that the air above the Heat sources on the work tables with high flow velocity rises substantially vertically and collects just below the building ceiling.
  • This separation of cool and slow supply air in the passage area below the supply air duct and against this comparatively hot air in the area above the heat sources and in the amount of Absaugöffhungen can significantly increase the thermal efficiency of the air conditioning of a room.
  • the solution according to the invention does not temper the entire room but only the occupied zone in the passage area through the cool air.
  • the zone above the supply air duct which is usually added to a support frame, also referred to below as a ceiling grid, has almost no influence on the temperature control of the air in the occupied zone.
  • the temperature of the exhaust air which is in conventional systems in which a substantially complete mixing of the entire room air with the swirl nozzles locally supplied supply air is in the range of 23 ° C to 25 ° C, in the inventive arrangement has a temperature approx 5 ° C higher, ie approx. 28 ° C - 30 ° C. Due to the larger compared to a mixed ventilation system of the prior art temperature difference between supply and exhaust air required for the heat dissipation from the room air flow - and thus the energy required for air promotion - lower.
  • a further reduction of the energy expenditure results in the arrangement according to the invention in that the outer surface of the supply air duct is cooled by the supply air itself and acts in space similar to a cooling sail by receiving heat from the room via heat radiation and free convection.
  • This advantageous effect which basically also in other thermally insulated supply air ducts occurs in the inventive arrangement due to the comparatively large surface of the supply air duct, in particular, if it consists of a thin-walled textile material, but much more pronounced. It helps to realize the heat dissipation from the room with a lower draft risk than is the case with known ventilation systems.
  • the so-called perceived temperature (mean value of air temperature and radiation temperature) in the residence area of the laboratory technicians is favorably influenced.
  • the air temperature in the residence area can thereby be slightly higher in the arrangement according to the invention than in known mixed ventilation systems, which in turn can reduce the air volume flow and thus ultimately the energy consumption.
  • the use of the arrangement according to the invention reduces the demand for electrical energy required for generating and conveying the cooled supply air by up to 20% or even more compared with a known mixed ventilation system.
  • Another advantage that results from the arrangement according to the invention is that, in the case of a local occurrence of pollutants, for example, when a hazardous liquid on one of the work tables, the total pollutant concentration in the rooms compared to a mixing ventilation by more than 25 % can be reduced. This is due to the fact that the locally laden with pollutants air above the worktops due to the two aforementioned air rollers is passed directly to the area of the building ceiling and from there to the suction slots of the exhaust duct.
  • the supply air duct comprises a fitting, which is preferably arranged in front of the volumetric flow controller for the supply air duct and which can be replaced by one or even two or more heat exchangers.
  • the cooling power supplied to the room can be increased even further, that on both sides of the supply air duct in each case an additional heat sink - hereinafter also referred to as "cooling baffle" - parallel to the center axis of the room, preferably transversely to the center axis displaceable on the support frame
  • the suspension of the cooling baffle takes place so that they are preferably arranged at a distance of eg 10 cm next to the supply air duct flush with the bottom, so that through the resulting opening between the supply air duct and each cooling baffle a corresponding amount of room air from the
  • the transverse displaceability of the cooling baffle affords access to the top side of the supply air duct, which is working on the preferably above the supply air duct running sanitary and electrical installations allows without having to dismantle the supply air duct before.
  • Fig. 1 is a schematic cross-sectional view of a laboratory room with a
  • Fig. 2 is an enlarged detail view of the supply air duct and exhaust duct of a
  • an arrangement 1 for ventilating a room 2, in particular a laboratory space, which has a passage area 4 bounded on both sides by work tables 6a, 6b, comprises a supply air channel 8 arranged above the passage area. is supplied via the preferably cooled fresh air from a fresh air generator not shown in detail or a fresh air blower.
  • the supply air duct 8 has two lateral air supply sections 8a, 8b, which extend along the passage area 4 and each having a plurality of circular air outlet openings 10a, 10b, from which the supply air exits laterally in the direction of the work tables 6a, 6b.
  • the two lateral air supply sections 8a, 8b are separated from one another by a substantially airtight central separation section 8c, which has, for example, 1/3 of the width of the supply air channel 8 and has no air outlet openings.
  • the supply air duct 8 is made of a flexible textile material, which is substantially impermeable to air and has the cross-sectional shape of a hanging D, which is received on two spaced supports 12a, 12b of a supporting frame not otherwise shown.
  • media lines 30 for example, water, gas, electricity, etc., which are supported, for example, by a non-descript Traverse, and are accessible from the side.
  • the air outlet openings 10a, 10b are introduced into the air supply sections 8a, 8b as microperforations with, in particular, circular air outlet openings 10a, 10b, and the separating section 8c is produced by leaving the substantially air-impermeable flexible textile material unperforated in this strip-shaped separating section 8c ,
  • the openings of the microperforation which are preferably introduced into the lateral air supply sections 8a, 8b before the installation of the supply air channel 8 by means of a laser or a suitable punching device, have a diameter in the range of between 0.3 and 0.7 in the preferred embodiment of the invention mm, preferably 0.4 to 0.6 mm and particularly preferably 0.5 mm.
  • the Luftaustrittsöffhungen may also have an elongated or oval shape.
  • the material of the supply air channel 8 may consist at least in sections of a light-transmitting material, in which case a light source 32 is disposed within the supply air channel 8 in order to illuminate the space 2.
  • an exhaust air duct 14 is arranged at a distance of, for example, 80 cm to Im, which comprises two slit-like suction openings 14a, 14b extending substantially parallel to the supply air duct 8, which are arranged in the region of the ceiling 16 of the room 2, an air roll 18a, 18b forms on each side of the passage area 4, which in the region of the worktables 6a, 6b by heat sources 20a, 20b, such as screens, electrical equipment or cooking appliances, etc.
  • plate-shaped sound-absorbing elements 22 are received on the ceiling 16 of the room with a perforation, not shown, preferably from the ceiling 16 of the room to the exhaust openings 14a, 14b of the exhaust duct 14 extend down, so that the upper edge of each suction slot 14a, 14b flush with the bottom of the sound-absorbing element or a few cm below the bottom of the elements 22 extends.
  • a perforation not shown, preferably from the ceiling 16 of the room to the exhaust openings 14a, 14b of the exhaust duct 14 extend down, so that the upper edge of each suction slot 14a, 14b flush with the bottom of the sound-absorbing element or a few cm below the bottom of the elements 22 extends.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Ventilation (AREA)
  • Duct Arrangements (AREA)
  • Central Air Conditioning (AREA)

Abstract

L'invention concerne un système de ventilation d'une pièce (2), notamment d'un laboratoire, qui possède une zone allée (4) délimitée de chaque côté par des bureaux (6a, 6b), ledit système de ventilation comprenant un conduit (8) d'air frais destiné à l'alimentation en air frais de la pièce (2) et disposé au-dessus de la zone allée (4), et un conduit (14) d'évacuation d'air vicié destiné à l'évacuation de l'air vicié hors de la pièce (2) et disposé au-dessus du conduit d'air frais; le conduit (8) d'air frais possédant une pluralité d'orifices (10a, 10b) de sortie d'air, desquels l'air frais sort au-dessus de la zone allée (4). L'invention est caractérisée en ce que le conduit (8) d'air frais comporte deux sections (8a, 8b) latérales qui s'étendent le long de la zone allée (4) et qui présentent respectivement une pluralité d'orifices (10a, 10b) de sortie d'air circulaires, desquels l'air frais sort latéralement en direction des bureaux (6a, 6b); en ce qu'une section de séparation (8c) centrale sensiblement étanche à l'air sépare la première de la deuxième section (8a, 8b) d'alimentation en air; et en ce que le conduit (14) d'air vicié comporte deux orifices d'aspiration (14a, 14b) en forme de fentes qui s'étendent sensiblement parallèlement au conduit (8) d'air frais et qui sont disposés au voisinage du plafond (16) de la pièce (2) de telle façon qu'une spirale d'air (18a, 18b) se forme de chaque côté de la zone allée (4) et que, grâce à cette spirale d'air, l'air frais chauffé au voisinage des bureaux (6a, 6b) parvient verticalement dans la zone (28) du plafond (16) de la pièce (2).
EP11749743.8A 2010-09-07 2011-08-27 Système de ventilation d'une pièce, notamment d'un laboratoire Active EP2614196B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010044590.8A DE102010044590B4 (de) 2010-09-07 2010-09-07 Anordnung zur Belüftung eines Raums, insbesondere eines Laborraums und Verwendung eines Zuluftkanals
PCT/EP2011/004314 WO2012031700A1 (fr) 2010-09-07 2011-08-27 Système de ventilation d'une pièce, notamment d'un laboratoire

Publications (2)

Publication Number Publication Date
EP2614196A1 true EP2614196A1 (fr) 2013-07-17
EP2614196B1 EP2614196B1 (fr) 2017-07-12

Family

ID=44534264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11749743.8A Active EP2614196B1 (fr) 2010-09-07 2011-08-27 Système de ventilation d'une pièce, notamment d'un laboratoire

Country Status (5)

Country Link
US (1) US9759444B2 (fr)
EP (1) EP2614196B1 (fr)
DE (1) DE102010044590B4 (fr)
DK (1) DK2614196T3 (fr)
WO (1) WO2012031700A1 (fr)

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CN113719947A (zh) * 2021-08-19 2021-11-30 青岛海尔空调器有限总公司 一种水洗空气装置、空调室内机和空调
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Publication number Priority date Publication date Assignee Title
EP3805653A4 (fr) * 2018-05-30 2021-07-21 Mitsubishi Electric Corporation Système de ventilation, système de climatisation, et procédé d'installation de système de climatisation

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DE102010044590B4 (de) 2022-04-21
DE102010044590A1 (de) 2012-03-08
EP2614196B1 (fr) 2017-07-12
US20130210336A1 (en) 2013-08-15
DK2614196T3 (en) 2017-10-23
WO2012031700A1 (fr) 2012-03-15
US9759444B2 (en) 2017-09-12

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