EP1209348B1 - Dispositif formant silencieux, notamment pour un moteur turbo - Google Patents

Dispositif formant silencieux, notamment pour un moteur turbo Download PDF

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Publication number
EP1209348B1
EP1209348B1 EP01402977A EP01402977A EP1209348B1 EP 1209348 B1 EP1209348 B1 EP 1209348B1 EP 01402977 A EP01402977 A EP 01402977A EP 01402977 A EP01402977 A EP 01402977A EP 1209348 B1 EP1209348 B1 EP 1209348B1
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EP
European Patent Office
Prior art keywords
cylinder
straight segment
main body
axis
toric
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.)
Revoked
Application number
EP01402977A
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German (de)
English (en)
French (fr)
Other versions
EP1209348A1 (fr
Inventor
Henri Lepoutre
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WEVISTA
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WEVISTA
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Application filed by WEVISTA filed Critical WEVISTA
Publication of EP1209348A1 publication Critical patent/EP1209348A1/fr
Application granted granted Critical
Publication of EP1209348B1 publication Critical patent/EP1209348B1/fr
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • F02M35/1261—Helmholtz resonators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1283—Manufacturing or assembly; Connectors; Fixations

Definitions

  • the present invention relates to a silencer device to be mounted between a combustion air supply duct exiting for example a motor turbine and an outlet duct through which the air or the combustion fluid leaves in the direction, for example a heat exchanger.
  • Silencers of this type are already known in the prior art.
  • these silencer devices comprise a hollow main body of cylindro-circular shape; a cylindro-circular inlet and outlet fitting each having a diameter smaller than the diameter of the main body and mounted on either side of the main body, at least one partition piece defining with the inner surface of the hollow main body at least two O-chambers in the interior space of the main body defined, in cross-section, between the diameter of the body and the diameter of the connectors, the O-chambers being in direct communication with the virtual cylinder, which is defined by the diameter of the connectors and in which the fluid passes from one connector to the other, via a circular slot extending around the entire periphery of this virtual cylinder.
  • the positioning of the partition part is very important.
  • the width of the toric chambers must be a precise function of the frequency of the sound waves that it is desired to dampen. Therefore, it is necessary to very precisely position the partition piece. It takes a lot of time, which in a large manufacturing perspective scale poses problem.
  • the manufacture itself of the hollow main body is complicated to achieve.
  • the present invention aims to overcome these disadvantages by proposing a new silencer device mounted between an air inlet duct and an air outlet duct or fluid which is easy to manufacture, and in particular does not require many tools stamping and which at the same time also limits the pressure losses inside the silencer.
  • the silencer device intended to be mounted between a first air or fluid inlet duct and a second air or fluid outlet duct, this device being in particular mounted between an engine turbine and a heat exchanger;
  • the silencer consisting of a cylindrical hollow main body, an inlet fitting and a cylindrical outlet fitting of cross-section less than the cross-section of the main body and at least one partition piece defining with the inner surface of the main body hollow at least two toric chambers in the region of the main body which is around the virtual cylinder defined by the virtual extension of the two connections towards each other, the toric chambers being in direct communication with this virtual cylinder each following a slot extending all around the virtual cylinder, is characterized in that the toric chambers are partly separated from the virtual cylinder by the partition piece and / or one and / or both ducts between which is mounted the muffler.
  • the partition part (s) is (are) a cylindrical part (s) whose generating curve in the plane parallel to the direction of the flow of the fluid comprises a first segment. on the right defining a partition wall between the toric chambers and the virtual cylinder, a second straight segment defining a separation between two toric chambers, and a third straight segment forming a wedge with the second segment, and formed in the surface inside the hollow body an annular recess, the wedge abutting against a side wall of the recess, so that when this third segment is welded into this recess, a precise positioning of the partition piece is obtained in a simple manner, and therefore a precise dimension of the resonance chambers with the possibility of producing on a large scale without always having to accurately measure the e positioning of the partition.
  • the width dimension of the recess is substantially equal to the dimension of the third segment of the right of the partition piece. This further improves the positioning accuracy.
  • the hollow main body consists of two identical bells that can be connected to one another at their outer edge.
  • the bells consist of a cylinder whose generating curve in the plane of the axis of the cylinder, namely the flow axis of the fluids, consists of a first segment of the right substantially parallel to the axis of flow and corresponding to a diameter substantially equal to the diameter of the inlet or outlet ducts, a second line segment substantially parallel to the first line segment but at a greater distance from the axis of the cylinder and a third line segment even further distance from the axis of the cylinder to thereby define a recess in cooperation with the third segment of the other bell.
  • At least one third auxiliary toric chamber is formed which communicates with the inside of the virtual cylinder via an opening extending over less than 360 °, in particular less than 240 °, from preferably less than 120 °.
  • the third chamber is formed by adding a second internal partition of the same shape as the first partition.
  • FIG. 1 represents a first embodiment of a device according to the invention.
  • FIG. 2 represents another embodiment of a device according to the invention.
  • FIG. 1 there is described a muffler mounted between an air inlet duct 1, which is connected on the other hand to the turbine of a motor (not shown), and an outlet duct 2 leading directly or indirectly through other conduits to a heat exchanger.
  • the air flows between the duct 1 and the duct 2.
  • the device can also be used with a flow of air in the other direction, the duct 2 becoming the inlet duct and the duct 1 the outlet duct .
  • This silencer to remove or reduce noise generated by the turbine of the turbo engine.
  • the silencer consists of a hollow main body 3 of cylindro-circular shape.
  • This cylindro-circular main body consists of a first circular cylinder 4 forming the inlet connection, a second circular cylinder 4 'forming the outlet connection, a third circular cylinder 5, a fourth cylinder 5 circular and a circular fifth cylinder 6, the cylinders 5, 5 'and 6 circular defining the inner region of the silencer.
  • the diameter of the circular cylinder 6 is a little larger than the diameter of the cylinders 5 and 5 'circular, for example 0.2 to 5 mm.
  • One piece 8 cylindrical defines inside the main body two chambers 9 and 10 of Helmholtz.
  • This part 8 forming a partition is a cylindrical piece whose generating curve in the plane of the figure, which is a plane parallel to the flow direction of the fluids, consists of a first segment of line 11 substantially parallel to the axis flow, a second segment of line 12 intermediate, which defines the partition, and a third line segment 13 at a greater distance from the axis than the first straight line 11.
  • the chamber 9, in the plane of the figure is delimited by the wall of the main body, by the partition 12 and by the line segment 11.
  • the chamber 10 is delimited, on the one hand by the wall of the outer body, and on the other hand by the partition 12 and the portion of the wall of the conduit 2 which protrudes inside the hollow body.
  • This chamber 10 communicates with the inside of the virtual cylinder through an annular slot 15.
  • the length of the segment 13 of the right is substantially equal to the width in this plane of the cylinder 6.
  • This cylinder 6 is welded to the cylinder 13 by welding or brazing.
  • the wedge formed between the two segments 12 and 13 is substantially abutted against one of the side walls of the recess 6, which allows to accurately position the part 8 relative to the hollow body.
  • the fact that the two widths of the cylinders 6 and 13 are substantially equal ensures even more that the positioning of the part 8 relative to the hollow body when it is welded at the cylinder 6 is always the same.
  • the connectors 4 and 4 ' have diameters slightly greater than the diameters of the ducts 1 and 2 and are welded thereto after being threaded into the ducts.
  • the silencer (the hollow body and the partition piece) is made of 0.6 or 0.8 mm thick stainless steel.
  • the hollow body consists of two halves, which are in the form of two bells.
  • Each bell has a first small circular cylinder and a second circular cylinder of larger diameter and a third circular cylinder of diameter slightly larger than the second.
  • the third circular cylinder of larger diameter may be formed relative to the second cylinder by stamping.
  • the two halves are joined at their outer edge at the weld joint, the third cylinders of the two bells form, after having been welded to one another at their outer edge 22, the positioning cylinder 6 .
  • the positioning of the two half-bells with respect to the ducts 1 and 2 is achieved by means of reliefs 20, 21 (shown only in FIG. 1 but which can also be provided in FIG. 2) distributed around the perimeter of each duct 1 and 2, for example three reliefs at 120 ° from each other, at which abut the outer edges of the connectors 4 and 4 'and which thus define the precise positioning of these two connections relative to the two ducts in which they fit before being soldered.
  • This makes it possible to obtain a precise dimensioning of the silencer body with respect to the ducts 1 and 2 and therefore a precise value of the width of the communication slots between the toric chambers and the virtual cylinder.
  • Figure 2 shows another alternative embodiment of a device according to the invention. Parts identical to those of Figure 1 are designated by the same reference numerals.
  • This embodiment differs from the first on the one hand by the presence of a second part 8 'forming a partition of identical shape to the first part 8 forming partition and on the other hand, by the presence of a third toric chamber 30.
  • This third toroidal chamber is in communication with the interior of the outlet conduit 2 only through a rectangular window 31 extending 120 ° from the periphery of the outlet conduit 2.
  • This design gives the chamber 30 a resonance frequency relatively low, compared to the frequencies of the chambers 9 'and 10', to expand the frequency band on which the silencer acts.
  • this chamber 30 does not operate according to the principle of a Helmholtz resonator but according to the principle of an open tube at both ends, which meet at the same point of connection.
  • the part 8 ', through its segment 11', is at a small distance from the duct 2. However, they can be welded together or not, as shown in the figure. A slight game between the two is not detrimental to the acoustics.
  • the segments 13 and 13 'of the two parts 8 and 8' forming a partition are of the same dimensions, namely half the width of the annular recess 6.
  • each of the segments 13 and 13 ' (ie the ends forming with the segments 12 and 12' a wedge) abuts against a respective stop formed by the side walls of the recess 6.
  • the two pieces 8 and 8 ' by this positioning wedge against stop, can be positioned with precision.
  • the fact that the sum of the lengths of two segments 13 and 13 'is substantially equal to the width of the recess further improves the positioning accuracy.
  • the silencers shown in Figures 1 and 2 are not symmetrical. According to another possible embodiment, they could be. In addition, in the case of non-symmetrical embodiments, they can be used with air flow in one direction or the other.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Exhaust Silencers (AREA)
EP01402977A 2000-11-23 2001-11-21 Dispositif formant silencieux, notamment pour un moteur turbo Revoked EP1209348B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0015100A FR2816991B1 (fr) 2000-11-23 2000-11-23 Dispositif formant silencieux, notamment pour un moteur turbo
FR0015100 2000-11-23

Publications (2)

Publication Number Publication Date
EP1209348A1 EP1209348A1 (fr) 2002-05-29
EP1209348B1 true EP1209348B1 (fr) 2006-06-14

Family

ID=8856776

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01402977A Revoked EP1209348B1 (fr) 2000-11-23 2001-11-21 Dispositif formant silencieux, notamment pour un moteur turbo

Country Status (6)

Country Link
US (1) US6681888B2 (ko)
EP (1) EP1209348B1 (ko)
JP (1) JP4137433B2 (ko)
KR (1) KR20020040617A (ko)
DE (1) DE60120611T2 (ko)
FR (1) FR2816991B1 (ko)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7117974B2 (en) * 2004-05-14 2006-10-10 Visteon Global Technologies, Inc. Electronically controlled dual chamber variable resonator
US7367424B2 (en) * 2005-02-14 2008-05-06 Honeywell International, Inc. Eccentric exhaust muffler for use with auxiliary power units
DE102005036676A1 (de) * 2005-08-04 2007-02-15 Faurecia Abgastechnik Gmbh Schalldämpfer für die Abgasanlage eines Kraftfahrzeugs
JP4771546B2 (ja) * 2007-03-22 2011-09-14 株式会社Ｒｏｋｉ 消音ダクト
FR2946120B1 (fr) * 2009-05-29 2015-11-06 Hutchinson Dispositif d'attenuation acoustique pour ligne d'admission d'un moteur thermique,et ligne d'admission l'incorporant.
WO2011161042A1 (en) * 2010-06-22 2011-12-29 Bekaert Combustion Technology B.V. Fluegas slit cavity muffler
US9664098B2 (en) 2010-08-11 2017-05-30 Borgwarner Inc. Exhaust-gas turbocharger with silencer
FR2983919B1 (fr) * 2011-12-13 2014-01-03 Hutchinson Dispositif d'attenuation acoustique pour ligne d'admission d'un moteur thermique, et ligne d'admission l'incorporant.
AT513955A1 (de) * 2013-01-16 2014-08-15 Henn Gmbh & Co Kg Schalldämpfer und Verfahren zu seiner Herstellung
US10359013B2 (en) * 2015-01-12 2019-07-23 Henn Gmbh & Co Kg. Vehicle silencer
US9850657B2 (en) 2016-02-25 2017-12-26 Steelcase Inc. Acoustic panel for partition wall assembly
KR102287249B1 (ko) * 2017-04-07 2021-08-06 현대자동차주식회사 차량의 레조네이터 및 이를 갖춘 차량 에어클리너

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4111278A (en) * 1977-02-09 1978-09-05 Copeland Corporation Discharge muffler
JPS53146047A (en) * 1977-05-25 1978-12-19 Honda Motor Co Ltd Muffler for internal combustion engine
JPS5650283A (en) * 1979-09-28 1981-05-07 Hitachi Ltd Silencer structure for total closed-type compressor
JPS6030463A (ja) * 1983-07-27 1985-02-16 Daihatsu Motor Co Ltd エンジンの吸気騒音低減装置
US4574913A (en) * 1983-11-11 1986-03-11 Sankei Giken Kogyo Kabushiki Kaisha Muffler with spark arresting function
US5446790A (en) * 1989-11-24 1995-08-29 Nippondenso Co., Ltd. Intake sound control apparatus
FI90588C (fi) * 1991-03-18 1994-02-25 Valmet Paper Machinery Inc Reaktiivinen äänenvaimennin, etenkin paperitehtaiden ilmakanaviin
US5196654A (en) * 1991-03-19 1993-03-23 Bristol Compressors Compressor discharge muffler construction
US5208429A (en) * 1991-07-26 1993-05-04 Carrier Corporation Combination muffler and check valve for a screw compressor
JPH05163924A (ja) * 1991-12-13 1993-06-29 Toyoda Gosei Co Ltd 消音装置
JPH05163925A (ja) * 1991-12-13 1993-06-29 Toyoda Gosei Co Ltd 消音装置
JPH05240120A (ja) * 1992-02-28 1993-09-17 Toyoda Gosei Co Ltd レゾネータ
JPH0610647A (ja) * 1992-06-24 1994-01-18 Aisin Takaoka Ltd 可変共鳴型消音器
US5349141A (en) * 1992-08-31 1994-09-20 Tsuchiya Mfg. Co., Ltd. Resonator type silencer having plural resonance chambers
JPH06108819A (ja) * 1992-09-26 1994-04-19 Toyoda Spinning & Weaving Co Ltd 共鳴型消音器
JPH0953529A (ja) * 1995-08-10 1997-02-25 Toyota Motor Corp レゾネータ
JP3883604B2 (ja) * 1996-04-24 2007-02-21 株式会社共立 消音装置付ブロワパイプ
JPH1144266A (ja) * 1997-07-29 1999-02-16 Toyota Motor Corp レゾネータ

Also Published As

Publication number Publication date
DE60120611T2 (de) 2007-06-06
FR2816991A1 (fr) 2002-05-24
US6681888B2 (en) 2004-01-27
JP4137433B2 (ja) 2008-08-20
KR20020040617A (ko) 2002-05-30
DE60120611D1 (de) 2006-07-27
EP1209348A1 (fr) 2002-05-29
JP2002195006A (ja) 2002-07-10
US20020070075A1 (en) 2002-06-13
FR2816991B1 (fr) 2003-01-17

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