EP2177842B1 - Sound-damping device for air vents or for breather pipes in rooms of buildings - Google Patents

Sound-damping device for air vents or for breather pipes in rooms of buildings Download PDF

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Publication number
EP2177842B1
EP2177842B1 EP20090155271 EP09155271A EP2177842B1 EP 2177842 B1 EP2177842 B1 EP 2177842B1 EP 20090155271 EP20090155271 EP 20090155271 EP 09155271 A EP09155271 A EP 09155271A EP 2177842 B1 EP2177842 B1 EP 2177842B1
Authority
EP
European Patent Office
Prior art keywords
sound
cap
opening
fixing frame
frame
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP20090155271
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2177842A1 (en
Inventor
Emiliano Santi
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.)
EUR EX Srl
Original Assignee
EUR EX Srl
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Filing date
Publication date
Application filed by EUR EX Srl filed Critical EUR EX Srl
Publication of EP2177842A1 publication Critical patent/EP2177842A1/en
Application granted granted Critical
Publication of EP2177842B1 publication Critical patent/EP2177842B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
    • F24F13/082—Grilles, registers or guards
    • F24F13/084—Grilles, registers or guards with mounting arrangements, e.g. snap fasteners for mounting to the wall or duct
    • 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
    • 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
    • F24F2013/242—Sound-absorbing material

Definitions

  • the invention relates to a sound-damping device to be fitted onto the inner and/or outer end of ventilation or breather pipes for rooms in buildings.
  • Rooms in buildings which are intended for use as a living room or kitchen must be ventilated by means of air vents consisting of through-holes formed in the walls inside which usually a pipe with a diameter of corresponding size - normally about 100-150 mm - is then inserted; grilles intended to provide an aesthetic closure for the holes are then mounted on the opposite ends of the said pipe in order to prevent the entry of insects or foreign bodies blown in by the wind, prevent rain penetrating from the outside and at the same time allow a sufficient air flow so that the air is continually renewed inside the room to be ventilated.
  • the ventilation grilles of the known type while they perform in an excellent manner the rain-barrier, air filtration and ventilation functions, are unable to reduce and dampen noise from the outside which is particularly disturbing when the building is situated close to a road or to other sources generating noise which on occasions may reach very high levels.
  • a sound-damping device for air vents or for breather pipes in rooms of buildings, comprising:
  • the invention concerns a sound-damping device to be mounted on the outer or inner end of a common ventilation pipe, including pipes which are already installed, which has the characteristic features described in the accompanying Claim 1 and the claims dependent thereon.
  • F indicates that the ventilation through-hole which is formed in the wall or masonry M of the building and T denotes the plastic pipe which is inserted with minimum play inside the said hole F and which forms the air through-flow duct.
  • P denotes an outer or inner wall of the masonry M on which the sound-damping device according to the invention must be mounted.
  • the device in question comprises a frame 1 made by means of plastic injection-moulding with a ring 101 - for example circular and with a ribbed profile - having a diameter preferably greater than that of the ventilation pipe T and reinforced by a pair of diametral and mutually perpendicular struts 201, 201' which are arched and curved inwards, the first of said struts having a grooved and ribbed profile, with the cavity directed downwards, while the other strut is flat and is arranged edgewise.
  • the said struts have a heightwise dimension which increases gradually towards the ring 101 and downwards so as to form end feet 301, 301' which are perpendicular to the ring 101, situated underneath the latter, with the same height and connected to flat lugs 401 which are situated outside the ring and which complete said feet and provide the latter with a greater flexural strength.
  • the end of said lugs 401 have, integrally formed with their middle part, base pieces 501 which have a bottom surface in the form of a circle segment, with the centre of curvature on the centre of the ring 101 and with rounded ends, and which have an intermediate reinforcing rib 601 integral with an inner side section of a flexible lug 701 which is parallel to the lug 401 and provided at the end with an engaging tooth 801, which tapers upwards and is directed with one side inclined outwards.
  • 2 denotes flared eyelets of the base-pieces 501
  • 3 denotes slits which are formed in the bottom side of the feet 301, 301' (see below).
  • the inner wall of the grooved-profile strut 201 has, integral therewith in a symmetrical arrangement and with respective stabilization ribs 901', frustoconical columns 901 which are perpendicular to the ideal plane in which the ring 101 lies, hollow, have a height substantially twice that of the feet 301, 301' and are designed blind with a bottom section of their cavity which has longitudinal grooves such as to be able to insert therein, with friction, and therefore fix, the ends of flat springs 4 which are folded in a V shape and are similar to the springs currently used for fixing some grilles of the known type onto the ends of the ventilation ducts T.
  • the frame 1 is arranged with the base-pieces 501 in contact with the wall P so that the ring 101 is at a suitable distance from the opening of the pipe T, parallel to the latter and sufficiently centred with this pipe.
  • the frame 1 may be fixed in position with the springs 4 pre-inserted inside the columns 901 and then inserted elastically inside the pipe T, as shown in Figure 1 in broken lines, or may be fixed onto the wall P using plugs 105 and associated screws 5 which pass through the eyelets 2 of at least two opposite base pieces 501 of the same frame 1, as shown in the same Figure 1 in continuous lines.
  • the frame 1 is designed to hold in position all the other components of the device which, in addition to the frame itself 1, comprise: a protective grille 6, for preventing the entry of insects and other foreign bodies; at least one disc-shaped pad 7 with sound-absorbing functions; and a covering cap 8, all of which with the feature that these components may be removed if necessary in order to perform periodic maintenance thereof.
  • the protective grille 6 must be installed in position together with the frame 1 and is designed to be arranged coaxially underneath this frame and rest directly on the wall P of the masonry M so that, should it be required to remove the grille, the frame 1 must also be removed. It is understood, however, that the scope of the invention also includes the constructional variant, not shown, where the grille 6 may be mounted on top of the frame 1 and, therefore, after the latter has been fixed onto the wall P, and may be kept in position by means of a snap-fit or snap-engagement with the said frame or simply by means of the retaining action exerted by the cap 8 when secured to the said frame 1, as explained further below.
  • the grille 6 has a frustoconical shape and is positioned together with the smaller-diameter ring 106 so as to rest on the wall P, aligned with the slits 3 in the feet 301, 301' of the frame 1, opposite which the said ring 106 has reliefs 206 which engage inside the slits 3, ensuring fastening together and necessary centring of the parts 1 and 6.
  • the said reliefs 206 form the inner wall of four seats 306 which are angularly equidistant from each other and externally project from the meshed surface 406 of the grille in question, these seats being provided on the bottom with an opening 9 for receiving the base pieces 501 of the frame 1 and being provided on the outer lateral surface, which also has a meshed configuration, with a window 10 which is situated opposite the flexible hook-like lugs 701, 801 of the frame 1 (see below).
  • the said lugs 701, 801 project with a sufficient length from the ideal plane which contains the larger-diameter ring 506 of the grille 6, also made by means of injection moulding of a suitable plastic.
  • the disk-shaped pad 7 is made of any suitable sound-absorbing material, such as that commercially available under the trade name Edilfiber®.
  • This component is installed using the cap 8 which is also made by means of injection moulding of a suitable plastic and which has round flat shape, with an external diameter suitably greater than that of the larger-diameter ring 506 of the grille 6, which is suitably curved and outwardly convex and which has on its inner surface, in an angularly equidistant arrangement and partly projecting, four pairs of fins 108 which are interconnected by respective cross-pieces 208 and are such that they may be inserted inside the seats 306 of the grille 6.
  • the pad 7 is arranged inside the cap 8 and with its circumference rests substantially against the pairs of fins 108 of the said cap.
  • the pad 7 rests on the ring 101 and on the convex struts 201, 201' of the frame 1 and flexes and adapts also to the inner curvature of the said cap 8, creating a small elastic resistance to the applicational thrust of this component 8 on the frame 1.
  • the device as described functions in the manner now described.
  • the sound waves which strike the wall P and which act on the cap 8 are partly reflected by this component which performs a proper shield function and are partly dampened by the combined action of the said cap and the underlying sound-absorbing pad 7, so that there is a considerable reduction in the noise passing through the ventilation pipe T, also because the sound barrier formed by the parts 7, 8 has a diameter which is suitably greater than that of the said pipe T and amply extends all the way around the projection of this ventilation pipe.
  • the description refers to a preferred embodiment of the invention which may be subject to numerous constructional variations and modifications consisting, for example, in the fact that the grille 6 and/or the frame 1 may be formed integrally, at the bottom thereof, with a tubular inlet having a diameter such as to be able to be inserted inside or outside a ventilation or breather pipe T which is arranged horizontally and inset as shown in Figure 1 or arranged vertically and freely in the air, such as the exhaust ducts of suction hoods for kitchens or bathrooms.
  • the frame 1 could have a simplified structure, without the said columns 901, without the external fixing base-pieces 501, formed as one piece with the grille 6, or with the possibility of fixing to the latter by means of engagement, with screws, by welding or using any other suitable solution.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Duct Arrangements (AREA)
  • Building Environments (AREA)
EP20090155271 2008-10-16 2009-03-16 Sound-damping device for air vents or for breather pipes in rooms of buildings Expired - Fee Related EP2177842B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITBO20080074 ITBO20080074U1 (it) 2008-10-16 2008-10-16 Riduttore acustico per le prese d'aerazione o per i tubi esalatori delle stanze degli edifici.

Publications (2)

Publication Number Publication Date
EP2177842A1 EP2177842A1 (en) 2010-04-21
EP2177842B1 true EP2177842B1 (en) 2013-05-01

Family

ID=41557660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090155271 Expired - Fee Related EP2177842B1 (en) 2008-10-16 2009-03-16 Sound-damping device for air vents or for breather pipes in rooms of buildings

Country Status (3)

Country Link
EP (1) EP2177842B1 (it)
ES (1) ES2452697T3 (it)
IT (1) ITBO20080074U1 (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE541076C2 (sv) * 2014-02-11 2019-03-26 Lindab Ab Ventilationsdon med ljuddämpning.
US10508445B2 (en) * 2016-11-07 2019-12-17 Carl H Voellmecke, III Housing apparatus for installation of ceiling or wall-mounted electrical appliances
CN107202414A (zh) * 2017-06-07 2017-09-26 中车长春轨道客车股份有限公司 一种声学混响室专用通风口结构
CN109990424B (zh) * 2017-12-30 2024-05-03 上海神洁环保科技股份有限公司 一种新型组合式防水型消声通风系统
WO2020036040A1 (ja) * 2018-08-14 2020-02-20 富士フイルム株式会社 消音システム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2311996A1 (fr) 1975-05-22 1976-12-17 Barbarin Joseph Bouche d'extraction pour installations de ventilation
JPS58194431U (ja) * 1982-06-21 1983-12-24 大成建設株式会社 消音機能を有する換気装置
JPH11237090A (ja) * 1998-02-23 1999-08-31 Sanbekku Kk ベントキャップ
KR20060008277A (ko) * 2003-04-23 2006-01-26 도쇼 엔지니아링구 가부시키가이샤 소음 카트리지가 부착된 환기 장치

Also Published As

Publication number Publication date
EP2177842A1 (en) 2010-04-21
ITBO20080074U1 (it) 2010-04-17
ES2452697T3 (es) 2014-04-02

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