EP1701084B1 - Kastenstruktur um horizontalen und vertikalen Rohre einer Lüftungsanlage zu verbinden - Google Patents

Kastenstruktur um horizontalen und vertikalen Rohre einer Lüftungsanlage zu verbinden Download PDF

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Publication number
EP1701084B1
EP1701084B1 EP06356006.4A EP06356006A EP1701084B1 EP 1701084 B1 EP1701084 B1 EP 1701084B1 EP 06356006 A EP06356006 A EP 06356006A EP 1701084 B1 EP1701084 B1 EP 1701084B1
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EP
European Patent Office
Prior art keywords
box structure
perforated plate
opening
insulating material
horizontal
Prior art date
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Active
Application number
EP06356006.4A
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English (en)
French (fr)
Other versions
EP1701084A1 (de
Inventor
Serge Buseyne
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.)
Aldes Aeraulique SA
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Aldes Aeraulique SA
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Publication of EP1701084A1 publication Critical patent/EP1701084A1/de
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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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/02—Ducting arrangements
    • F24F13/0263—Insulation for air ducts
    • 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
    • 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
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F24F2007/001—Ventilation with exhausting air ducts
    • F24F2007/002—Junction box, e.g. for ducts from kitchen, toilet or bathroom

Definitions

  • the present invention relates to a connecting box between horizontal and vertical ducts of a controlled mechanical ventilation installation of a building.
  • VMC installations Collective or individual dwellings, private or industrial premises are generally equipped with controlled mechanical ventilation systems, commonly known as VMC installations, to ensure a minimum of air renewal, necessary for hygiene, quality air and the durability of buildings.
  • a VMC installation generally consists of a ventilation group, a horizontal collector system or terrace, and at least one vertical network serving the various rooms to ventilate.
  • the accessory for connecting a vertical duct to a horizontal duct consists of a generally cylindrical metal casing into which the vertical duct and the horizontal duct radially open.
  • a box is called attic or terrace quill box (CPC or CPT) and also commonly called tee strain.
  • a ventilation system is sized to meet the regulatory requirements for extracted flows, acoustics and acoustic transmission between dwellings.
  • the network is then designed and dimensioned to ensure regulatory flows in relation to the conditions required by the acoustic regulation of construction.
  • the noise transmitted in the room served is a function of the characteristics of the extractor and its operating regime, the acoustic attenuation of the network, and the characteristics of the extraction vents.
  • the average air velocity in ducts must not exceed 6 ms -1 in horizontal ducts and 5 ms -1 in vertical ducts.
  • the decking box of terrace or roof has an important role in obtaining the resulting sound level and the resulting extracted flows.
  • a disadvantage of the wells of current manufacture is that they transmit a significant noise from the ventilation unit to the extraction vents located in the apartments, through the metal conduits.
  • the box has a major influence in the design of the fan and its consumption.
  • High pressure drops have the consequence of increasing the cost of installation and use.
  • Another use is to replace the box with a bend, resulting in a reduction of the pressure drop, a better dimensioning of the horizontal network but the impossibility to check the vacuity of the vertical networks and thus making the installation not in conformity with the regulations .
  • the box also has an important role for the maintenance of the facilities, its implementation to allow verification of the vacuity of the vertical duct.
  • the boxes are generally equipped with a removable cover allowing periodic visits and cleaning of ducts but also, in accordance with the regulatory requirements, to ensure the protection of the waterproofing report.
  • the document FR 2,624,580 discloses a junction box according to the preamble of claim 1.
  • the present invention therefore aims to remedy these drawbacks.
  • the technical problem underlying the invention is the production of a connecting box between horizontal and vertical ducts of a controlled mechanical ventilation system of a building to limit its pressure losses, while ensuring attenuation. sufficient acoustics of the ventilation system and allowing maintenance and verification of the void of the vertical ducts.
  • the invention relates to a connecting box between horizontal and vertical ducts of a controlled mechanical ventilation installation of a building, of the type comprising a hollow body having a lower opening intended to be connected to a vertical duct, an upper opening provided with a closure lid, the side wall of the hollow body having at least one lateral opening for mounting a connecting duct with a ventilation unit, characterized in that it is equipped with deflection means removable members for directing a flow of incoming air through the lower opening or the lateral opening, to the lateral opening or the lower opening respectively, the deflection means being acoustically absorbent, and in that the deflection means comprise a curved perforated plate, whose convex face is turned towards the closure lid and covered, on its turned side towards the cover, a layer of acoustic insulating material.
  • the deflection means direct the flow of air entering the box towards the connecting duct with the ventilation unit, thus allowing a significant reduction in pressure losses inside. of the box and therefore a better dimensioning of the fan and a saving of consumption.
  • the deflection means are also acoustically absorbing, it is possible to attenuate the incident noise and thus to obtain a regulatory sound level.
  • the upper edge of the perforated plate is located at the upper part of the lateral opening, and the lower edge of the perforated plate is located at the portion of the lower opening, located on the side opposite the lateral opening.
  • At least two perforations formed on the perforated plate have different diameters.
  • the perforations of different diameters formed on the perforated plate are distributed randomly.
  • the perforated plate is equipped with means for retaining the layer of insulating material.
  • the perforated plate is metallic.
  • the layer of acoustic insulating material is made of glass wool or rock, compressed felt, or the like.
  • the hollow body is of cylindrical general shape, of axis corresponding to that of the lower opening.
  • Figure 1 is a very schematic view of a ventilation system equipped with the box according to the invention.
  • Figure 2 is a longitudinal sectional view of the box according to the invention.
  • Figure 3 is a top view of the box without its closure lid.
  • Figure 4 is a perspective view of the deflection means according to the invention.
  • the figure 1 very schematically represents a controlled mechanical ventilation installation of a multi-storey building operating in extraction.
  • the floors of each floor are designated by the reference 2, and the floor of the roof terrace is designated by the reference 3.
  • All air extraction vents 4, mounted in the rooms of the various rooms to be ventilated, are associated with a metal column vertical 5, which is connected via a terrace branch box 6 to a horizontal pipe 7 in communication with the ventilation group 8 located on the terrace.
  • the casing 6 comprises a cylindrical metal body 9, of vertical axis, in which are provided a lower air inlet opening 10, of the same axis as the casing 6, in communication with the vertical duct 5, an upper opening 12 closed by a cover 13 and a radial opening 14 of air outlet, equipped with a sleeve 15 for connection to the horizontal duct 7.
  • the casing 6 is also equipped with removable deflection means 16, 17.
  • the removable deflection means comprise a perforated metal plate bent 16 of generally rectangular shape, covered on its convex face facing the cover 13, a layer of acoustic insulating material 17 of dimensions substantially identical to those of the metal plate 16.
  • the perforated plate 16 is equipped with two retaining tabs 18 formed on its longitudinal edges, substantially at its upper edge 19, and a return 20 formed on its lower edge 21.
  • the retaining tabs 18 and the return 20 are turned inwardly on the side of the acoustic insulating material layer 17 and are intended to hold the latter on the perforated plate 16.
  • the layer of acoustic insulating material 17 may consist of, for example, glass wool or rock, compressed felt, or the like.
  • the metal plate 16 is bent, its convex face being turned towards the cover 13, the upper edge 19 of the metal plate 16 is located at the upper part of the radial opening 14 of air outlet and of complementary shape that of the side wall of the body 9 while the lower edge 21 of the perforated plate 16 bears against the lower wall of the box 6, at the portion of the lower air inlet opening 10, on the opposite side to the air outlet opening 14.
  • the perforated plate 16 and the acoustic insulating material 17 make it possible to direct the flow of air entering through the lower air intake opening 10 towards the radial opening 14 of the air inlet. air outlet connected to the horizontal duct 7 connected to the ventilation unit 8.
  • the perforated plate 16 delimits with the cover 13 and the body 9 a volume of air more or less filled with acoustic insulating material 17.
  • This is a Helmholtz resonator that absorbs a part of the incident sound waves and therefore of mitigate the incident noise.
  • the resonance frequency of a Helmholtz resonator depends on the density of the acoustic insulating material, the surface and the depth of the holes allowing air circulation in the resonator and the height of the air volume.
  • the acoustic insulating material 17 can only absorb a well-defined frequency range and the same is true for each perforation 22 formed on the metal plate 16.
  • each perforation 22 has the same diameter and the same surface, only a restricted range of frequencies can be absorbed.
  • each perforation 22 uses a portion of the air trapped between the plate 16, the body 9 and the cover 13, and forms a small Helmholtz resonator operating for a different frequency range, thus allowing a better attenuation of the incident noise.
  • the invention provides a great improvement to the existing technique, providing a connecting box between horizontal and vertical ventilation ducts, simple structure, and having excellent aeraulic properties and insulation acoustic.
  • the invention is not limited to an embodiment, described above by way of example, but that it encompasses all the variants of embodiment.
  • the hollow body 9 could be, for example, generally parallelepipedal in shape and that the controlled mechanical ventilation installation could operate in insufflation, in this case the flow of air enters through the radial opening 14 and is directed by the deflection means 16, 17 to the lower opening 10, without departing from the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)

Claims (8)

  1. Verbindungskasten (6) zwischen horizontalen und vertikalen Leitungen einer Anlage für die kontrollierte mechanische Lüftung eines Gebäudes der Bauart, die einen Hohlkörper (9) umfasst, der eine untere Öffnung (10), die zum Anschluss an eine vertikale Leitung (5) bestimmt ist, eine obere Öffnung (12), die mit einem Verschlussdeckel (13) ausgestattet ist, aufweist, wobei die Seitenwand des Hohlkörpers (9) mindestens eine seitliche Öffnung (14) aufweist, die für die Montage einer Verbindungsleitung (7) mit einer Lüftungsgruppe (8) bestimmt ist, dadurch gekennzeichnet, dass er mit entfernbaren Ablenkmitteln (16, 17) ausgestattet ist, die es erlauben, einen durch die untere Öffnung (10) oder die seitliche Öffnung (14) eintretenden Luftstrom zu jeweils der seitlichen Öffnung (14) oder der unteren Öffnung (10) zu leiten, wobei die Ablenkmittel (16, 17) akustisch absorbierend sind, und dass die Ablenkmittel (16, 17) eine gebogene perforierte Platte (16) umfassen, deren konvexe Seite in Richtung des Verschlussdeckels (13) zeigt und auf ihrer Seite, die zu dem Deckel (13) zeigt, mit einer Schicht eines akustisch isolierenden Materials (17) bedeckt ist.
  2. Kasten (6) nach Anspruch 1, dadurch gekennzeichnet, dass sich der obere Rand (19) der perforierten Platte (16) auf Ebene des oberen Abschnitts der seitlichen Öffnung (14) befindet und sich der untere Rand (21) der perforierten Platte (16) auf Ebene des Abschnitts der unteren Öffnung (10) befindet, gegenüber der seitlichen Öffnung (14).
  3. Kasten (6) nach einem der Ansprüche 1 und 2, dadurch gekennzeichnet, dass mindestens zwei Perforationen (22), die auf der perforierten Platte (16) ausgebildet sind, unterschiedliche Durchmesser aufweisen.
  4. Kasten (6) nach Anspruch 3, dadurch gekennzeichnet, dass die Perforationen (22) unterschiedlicher Durchmesser, die auf der perforierten Platte (16) ausgebildet sind, nach dem Zufallsprinzip verteilt sind.
  5. Kasten (6) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die perforierte Platte (16) mit Rückhaltemitteln (18, 20) der isolierenden Materialschicht (17) ausgestattet ist.
  6. Kasten (6) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die perforierte Platte (16) metallisch ist.
  7. Kasten (6) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass das akustisch isolierende Material (17) aus Glas- oder Steinwolle, komprimiertem Filz oder ähnlichem besteht.
  8. Kasten (6) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Hohlkörper (9) eine allgemein zylindrische Form hat mit einer Achse, die der Achse der unteren Öffnung (10) entspricht.
EP06356006.4A 2005-02-03 2006-01-31 Kastenstruktur um horizontalen und vertikalen Rohre einer Lüftungsanlage zu verbinden Active EP1701084B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0501085A FR2881512B1 (fr) 2005-02-03 2005-02-03 Caisson de liaison entre des conduits horizontaux et verticaux d'une installation de ventilation mecanique controlee d'un batiment

Publications (2)

Publication Number Publication Date
EP1701084A1 EP1701084A1 (de) 2006-09-13
EP1701084B1 true EP1701084B1 (de) 2013-08-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06356006.4A Active EP1701084B1 (de) 2005-02-03 2006-01-31 Kastenstruktur um horizontalen und vertikalen Rohre einer Lüftungsanlage zu verbinden

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Country Link
EP (1) EP1701084B1 (de)
ES (1) ES2435995T3 (de)
FR (1) FR2881512B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102620104B (zh) * 2012-03-21 2014-10-29 江苏大学 一种流动诱导噪声隔声消声装置
PL224106B1 (pl) * 2013-08-23 2016-11-30 Ground Therm Spółka Z Ograniczoną Odpowiedzialnością Modułowy układ wentylacyjny i moduły układu wentylacyjnego

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1184828A (en) * 1967-11-17 1970-03-18 Colchester Woods Improvements in or relating to Sound Attenuating Units
FR2624580B1 (fr) * 1987-12-10 1990-02-09 Aldes Caisson de liaison entre des conduits horizontaux et verticaux d'une installation de ventilation mecanique d'un batiment, equipe de moyens d'absorption acoustique
FR2800149B3 (fr) * 1999-10-26 2001-08-31 Poliglas Sa Nouveau panneau pour conduits d'air conditionne
US6640926B2 (en) * 2000-12-29 2003-11-04 Industrial Acoustics Company, Inc. Elbow silencer

Also Published As

Publication number Publication date
EP1701084A1 (de) 2006-09-13
FR2881512B1 (fr) 2007-03-30
ES2435995T3 (es) 2013-12-26
FR2881512A1 (fr) 2006-08-04

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