EP1004825A1 - Dispositif pour l'amortissement du bruit de hottes d'aspiration - Google Patents

Dispositif pour l'amortissement du bruit de hottes d'aspiration Download PDF

Info

Publication number
EP1004825A1
EP1004825A1 EP99103941A EP99103941A EP1004825A1 EP 1004825 A1 EP1004825 A1 EP 1004825A1 EP 99103941 A EP99103941 A EP 99103941A EP 99103941 A EP99103941 A EP 99103941A EP 1004825 A1 EP1004825 A1 EP 1004825A1
Authority
EP
European Patent Office
Prior art keywords
silencing
extractor
silencing element
intake
shell
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
EP99103941A
Other languages
German (de)
English (en)
Other versions
EP1004825B1 (fr
Inventor
Alvaro Galassi
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.)
Faber SpA
Original Assignee
Faber SpA
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 Faber SpA filed Critical Faber SpA
Publication of EP1004825A1 publication Critical patent/EP1004825A1/fr
Application granted granted Critical
Publication of EP1004825B1 publication Critical patent/EP1004825B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00—Details
    • F24C15/20—Removing cooking fumes

Definitions

  • the present invention relates to a device for silencing extractor (ventilation) hoods and the like.
  • Extractor hoods designed to eliminate fumes and vapors produced by cookers and the like by conveying such vapors externally through a suitable vent pipe.
  • Extractor hoods generally have a pyramid-shaped body which is meant to collect the fumes and has, in its upper region, an outlet hole which is suitable for connection to a suitable vent pipe.
  • An extractor element usually constituted by a centrifugal fan, is accommodated inside the pyramid-shaped body of the hood.
  • centrifugal fans are rather noisy, and the noise is generated mainly at the intakes of the fans.
  • the noise generated by the fans is an evident factor in the noise pollution of the rooms in which extractor hoods are installed, negatively affecting the well-being of people occupying the rooms.
  • the aim of the present invention is to solve the above problem, by providing a device which allows to effectively silence extractor hoods and the like by means of a structure which is easy to provide and to assemble and does not entail an increase in bulk.
  • an object of the present invention is to provide a silencing device which is simple in concept, easy to maintain, safely reliable in operation, versatile in use and has a relatively low cost.
  • a device for silencing extractor hoods and the like which comprise a body designed to collect fumes and provided, in an upper part thereof, with a discharge hole which is meant for connection to a vent pipe for said fumes and is internally provided with an extractor element, characterized in that it comprises at least one silencing element made of sound-deadening material which is shaped like a cap and is provided with an intake which is directed downward in the assembly position, said silencing element being suitable to be associated with a respective intake of said extractor element.
  • the reference numeral 1 generally designates an extractor hood for cookers which is constituted, in a known manner, by a pyramid-shaped body 10 designed to collect the fumes and having, in its upper part, a discharge hole suitable for connection to a cylindrical vent pipe 11.
  • An element 12 for covering the vent pipe 11 is suitable to be applied above the upper base of the body 10.
  • the covering element 12 is preferably constituted by two or more sheet metal profiled elements which are coupled telescopically.
  • An extractor element 2 constituted by a fan of the centrifugal type, is accommodated inside the body 10 of the hood.
  • the fan 2 has two mutually opposite intakes and a discharge outlet which is connected to said vent pipe 11.
  • the intakes and the outlet have a generally circular shape.
  • At least one silencing element 3 and preferably respective silencing elements 3 made of sound-deadening material are associated with the mutually opposite intakes of the fan 2; said silencing elements are shaped like a cap and have a corresponding intake which is directed downward upon assembly.
  • the silencing element 3 is constituted by a pair of shells 31 and 32 which are suitable to be associated, at a respective flanged edge 31a and 32a, with a mutual coupling ring 30 by virtue of suitable screw means.
  • a flange 33 is push-fit coupled to the ring 30 to provide a bayonet-like coupling to the corresponding intake of the fan 2.
  • the first shell 31 forms a sort of inclined flap 31b which covers the second shell 32 in a front region; the second shell 32 has a limited extension, so as to form said intake with respect to the first shell 31.
  • the extractor hood uses activated-charcoal filters 4 mounted on the intakes of the fan 2 (see Figure 1 again), the silencing elements 3 are push-fitted on filters 4 without the bayonet-coupling flange 33.
  • the shells 31 and 32 of the silencing element 3 are provided by means of an internal layer of sound-deadening fibrous material which is enclosed between two films of washable and impermeable plastics.
  • the plastics films are glued to the layer of fibrous material, preferably so that they do not adhere perfectly, at least on the side directed toward the inside of the cap, to said layer of fibrous material, in order to improve the sound-deadening effect.
  • the silencing device further provides for the use of additional silencing elements 5 made of sound-deadening material which are shaped like a cylindrical sleeve and are suitable to be coupled to the cylindrical vent pipe 11 above the upper base of the body 10 of the hood.
  • the additional silencing element 5 is constituted by a pair of semicylindrical shells 51 which are suitable to be mutually joined at a respective vertical flanged edge 51a by virtue of suitable screw means.
  • the sleeve which forms the silencing element 5 is internally provided with a seat 51b which has a wider diameter than the remaining portion of the sleeve and by means of which it is suitable to fit on a corresponding portion 6 of the vent pipe 11.
  • the sleeve instead has a cylindrical lip 52 which has a smaller diameter than the remaining portion of the sleeve and is suitable to fit in a corresponding seat 51a formed inside a silencing element which has a similar shape and is superimposed thereon.
  • the shells 51 of the silencing element 5 are formed by an internal layer of sound-deadening fibrous material which is enclosed between two films of washable and impermeable plastics, as provided for the cap-shaped elements 3.
  • the cap-shaped silencing elements 3 are fitted over the corresponding intakes of the fan 2, after opening the intake grille of the hood or after removing the grease filters.
  • the silencing elements 3 are fitted, with a bayonet-like coupling by means of the flange 33, to the corresponding intake of the fan 2.
  • the additional sleeve-shaped silencing element 5 is fitted on the discharge of the fan 2 and is coupled to the vent pipe 11. Indeed, according to operating requirements, it is possible to install one or more silencing elements 5 on the vent pipe 11.
  • noise reduction is equal to approximately 6 dBA, with a perceived noise level which is four times lower.
  • Figure 9 illustrates a different embodiment of the extractor hood, provided with a smaller body 10.
  • silencing elements made of sound-deadening material constituted by a single shell 34, are fitted onto the outlets of the fan 2.
  • the shell 34 forms a sort of inclined flap which forms said intake in a downward region.
  • the shell 34 can be associated, at a respective flanged edge 34a, with the ring 30, to which the flange 33 for bayonet coupling to the corresponding intake of the fan 2 is push-fit coupled.
  • noise reduction is equal to approximately 5 dBA.
  • the device according to the invention achieves the aim of effectively silencing extractor hoods and the like by means of a structure which can be provided easily, is easy to assemble and does not entail increases in the dimensions or changes to the aesthetic appearance of the hood.
  • the above-described silencing elements 3 and 5 are impermeable to grease and are washable.
  • the caps 3 can be periodically washed with soap and water after removing them from the hood, by virtue of the bayonet coupling.
  • the silencing elements 3 and 5 further have self-extinguishing characteristics which allow their rating in the V0 class.
  • Another advantage offered by the device is that it also allows application to extractor hoods that are already in use by marketing a suitable kit which preferably comprises a pair of cap elements 3 and a cylindrical sleeve element 5.
  • the materials used may be any according to requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Outer Garments And Coats (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Superstructure Of Vehicle (AREA)
EP19990103941 1998-11-25 1999-03-08 Dispositif pour l'amortissement du bruit de hottes d'aspiration Expired - Lifetime EP1004825B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO980657 IT1304133B1 (it) 1998-11-25 1998-11-25 Dispositivo per insonorizzare cappe aspiranti e simili .
ITBO980657 1998-11-25

Publications (2)

Publication Number Publication Date
EP1004825A1 true EP1004825A1 (fr) 2000-05-31
EP1004825B1 EP1004825B1 (fr) 2003-10-01

Family

ID=11343526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990103941 Expired - Lifetime EP1004825B1 (fr) 1998-11-25 1999-03-08 Dispositif pour l'amortissement du bruit de hottes d'aspiration

Country Status (3)

Country Link
EP (1) EP1004825B1 (fr)
DE (1) DE69911720D1 (fr)
IT (1) IT1304133B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2216706A1 (es) * 2003-04-07 2004-10-16 Cata Electrodomesticos, S.L. Silenciador para campanas extractoras de humos.
CN108006780A (zh) * 2018-01-22 2018-05-08 广东美的厨房电器制造有限公司 一种吸油烟机
WO2022127818A1 (fr) * 2020-12-18 2022-06-23 香港大学浙江科学技术研究院 Hotte aspirante

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202013100130U1 (de) * 2013-01-11 2014-04-14 Carcoustics Techconsult Gmbh Akustisches Dämpfungselement für ein Haushaltsgerät, insbesondere für eine Dunstabzugshaube; Haushaltsgeräte mit akustischem Dämpfungselement
CN110513741B (zh) * 2019-08-29 2021-05-28 佛山市顺德区美的洗涤电器制造有限公司 吸油烟机
RU202179U1 (ru) * 2020-07-20 2021-02-05 Радмир Радикович Байгильдин Вытяжной кожух

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120876A (en) * 1961-05-03 1964-02-11 Edward F Lirette Air intake silencer
FR2506185A1 (fr) * 1981-05-23 1982-11-26 Bauknecht Gmbh G Hotte d'evacuation des emanations de cuisine
JPH0771801A (ja) * 1993-06-29 1995-03-17 Toto Ltd レンジフード
EP0840063A1 (fr) * 1996-11-01 1998-05-06 AKTIEBOLAGET ELECTROLUX (publ.) Ventilateur de cuisine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3120876A (en) * 1961-05-03 1964-02-11 Edward F Lirette Air intake silencer
FR2506185A1 (fr) * 1981-05-23 1982-11-26 Bauknecht Gmbh G Hotte d'evacuation des emanations de cuisine
JPH0771801A (ja) * 1993-06-29 1995-03-17 Toto Ltd レンジフード
EP0840063A1 (fr) * 1996-11-01 1998-05-06 AKTIEBOLAGET ELECTROLUX (publ.) Ventilateur de cuisine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1995, no. 06 31 July 1995 (1995-07-31) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2216706A1 (es) * 2003-04-07 2004-10-16 Cata Electrodomesticos, S.L. Silenciador para campanas extractoras de humos.
WO2004090427A1 (fr) * 2003-04-07 2004-10-21 Cata Electrodomesticos S.L. Silencieux pour hottes aspirantes evacuant la fumee
CN108006780A (zh) * 2018-01-22 2018-05-08 广东美的厨房电器制造有限公司 一种吸油烟机
WO2022127818A1 (fr) * 2020-12-18 2022-06-23 香港大学浙江科学技术研究院 Hotte aspirante

Also Published As

Publication number Publication date
EP1004825B1 (fr) 2003-10-01
ITBO980657A1 (it) 2000-05-25
IT1304133B1 (it) 2001-03-07
DE69911720D1 (de) 2003-11-06

Similar Documents

Publication Publication Date Title
US4435877A (en) Noise reducing means for vacuum cleaner
US5549724A (en) Filter element of air cleaner unit
KR910017994A (ko) 진공청소기
JP3019647U (ja) フィルタエレメント
US5079782A (en) Toilet assembly
EP1004825B1 (fr) Dispositif pour l'amortissement du bruit de hottes d'aspiration
US5991934A (en) Bad odor removing stool seat and seat cover
US5458666A (en) Filter element of air cleaner unit
JP3614653B2 (ja) エアクリーナの水抜き構造
EP3901467A1 (fr) Extracteur à double entrée d'air
JP2541218Y2 (ja) レンジフ−ド
KR940010973B1 (ko) 일체형공기조화기의 응축수처리장치
CN219797310U (zh) 一种桌面抽油烟机的过滤结构
CN212378047U (zh) 一种吸油烟机
JP3013829B2 (ja) 空気調和機
JPH0533978A (ja) レンジフード
JP3010526U (ja) エアクリーナユニットのフィルタエレメント
CN210601791U (zh) 一种油烟机导风圈及使用其的油烟机
JPS6335313Y2 (fr)
CA2081823A1 (fr) Ventilateur de hotte
JPS6337611Y2 (fr)
JPH0134029Y2 (fr)
JPH08261527A (ja) 換気扇
KR0134207Y1 (ko) 자동차의 카울 패널
JPH07279211A (ja) 排水トラップおよび排水トラップを備える床排水構造

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FR GB IT NL SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20001102

AKX Designation fees paid

Free format text: BE DE ES FI FR IT NL SE

AXX Extension fees paid

Free format text: LT PAYMENT 20001102;RO PAYMENT 20001102

RBV Designated contracting states (corrected)

Designated state(s): BE DE ES FR GB IT NL SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: FABER S.P.A.

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE ES FR GB IT NL SE

AX Request for extension of the european patent

Extension state: LT RO

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031001

Ref country code: FR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031001

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20031001

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69911720

Country of ref document: DE

Date of ref document: 20031106

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040112

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040308

LTIE Lt: invalidation of european patent or patent extension

Effective date: 20031001

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20040702

EN Fr: translation not filed
GBPC Gb: european patent ceased through non-payment of renewal fee
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1028635

Country of ref document: HK

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20100325

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110308