EP1380730B1 - Silencieux - Google Patents

Silencieux Download PDF

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Publication number
EP1380730B1
EP1380730B1 EP03015086A EP03015086A EP1380730B1 EP 1380730 B1 EP1380730 B1 EP 1380730B1 EP 03015086 A EP03015086 A EP 03015086A EP 03015086 A EP03015086 A EP 03015086A EP 1380730 B1 EP1380730 B1 EP 1380730B1
Authority
EP
European Patent Office
Prior art keywords
silencer according
elements
housing
silencer
deflecting elements
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 - Lifetime
Application number
EP03015086A
Other languages
German (de)
English (en)
Other versions
EP1380730A1 (fr
Inventor
Peter Weinhold
Peter Wintrich
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.)
3w-Modellmotoren Weinhold & Wintrich GmbH
Original Assignee
3w-Modellmotoren Weinhold & Wintrich GmbH
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Filing date
Publication date
Application filed by 3w-Modellmotoren Weinhold & Wintrich GmbH filed Critical 3w-Modellmotoren Weinhold & Wintrich GmbH
Publication of EP1380730A1 publication Critical patent/EP1380730A1/fr
Application granted granted Critical
Publication of EP1380730B1 publication Critical patent/EP1380730B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/086—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling having means to impart whirling motion to the gases
    • F01N1/088—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling having means to impart whirling motion to the gases using vanes arranged on gas flow path or gas flow tubes with tangentially directed apertures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N1/00—Silencing apparatus characterised by method of silencing
    • F01N1/08—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling
    • F01N1/084—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling the gases flowing through the silencer two or more times longitudinally in opposite directions, e.g. using parallel or concentric tubes

Definitions

  • the invention relates to a silencer for internal combustion engines with a flowed through by a flow medium, at least one housing chamber having housing, are arranged in the turbulence of the flow medium deflection along a housing main axis one behind the other and at a distance from each other stationary.
  • a silencer is known from GB 1 98, 229.
  • Chraräkteristisch for this known muffler is that it has lid-like inserts with some, approximately radially directed slots and on one side the slots bounding, notched edge portions.
  • a flow profile is to be achieved, which is shown in a figure of this document and hardly theoretical considerations. For this reason, the desired sound insulation effect does not occur, with the result that it is only a matter of prior art.
  • the inner wall of the housing is also provided with a layer of sound-absorbing material.
  • the last, disposed in the flow direction Dämmsegment is formed as a closed disc having an outer diameter which is smaller than the inner diameter of the housing.
  • All Dämmsegmente are absolutely flat and all fan-wheel-like discs have four large-area wing elements, which are all the same angle to the main flow direction.
  • the fan-wheel-like disks are elements which, in terms of shape and shape, are reminiscent of the typical shape of a ship's propeller.
  • the invention has the object to provide a muffler for internal combustion engines, which is particularly simple and on the one hand consists of simply designed elements and on the other hand is particularly effective and variable, so that it can also be easily adapted to different operating conditions.
  • the invention with the features of the characterizing part of claim 1 provides that the deflectors are diegelradartig and like a turbine stator each vane-shaped vanes and slots and that the vane-like vanes of adjacent deflecting elements for generating an axial direction of the flow Overlying circulation flow between the deflecting elements are respectively set opposite / angled.
  • the degree of soundproofing can also be influenced relatively easily by the use of more or fewer deflecting elements or silencer stages.
  • a silencer 1 comprises a housing 2, with at least one housing part or a housing chamber.
  • the housing 2 is formed by a cup-shaped head piece 3 serving as a housing chamber with a front end wall 4 and by a cup-shaped housing part 5 which also serves as a housing chamber.
  • the housing 2 further has a cylindrical peripheral wall 6 and at one end an end wall 7.
  • the housing part 5 is with its open end under the mounting edge 8 of the head piece 3 to the plant inserted. In the installed position, the head piece 3 and the housing part 5 are firmly connected.
  • fastening means 10 are provided, which extend through the fastening holes 9. As fasteners 10 are bolts or rivets into consideration.
  • a support tube 11 with a circular cross-section along a housing axis.
  • the support tube 11 projects with its one end through the end wall 4 to the outside and there forms an inlet pipe, while its other, also open end at a distance in front of the end wall 7 (Fig. 1) inside the housing 2 ends.
  • the gaseous medium / exhaust gas flows through the support tube 11 into the housing 2 and exits through an outlet / outflow 12 from the housing 2.
  • This outflow 12 can be mounted in a radial arrangement on the head piece 3 and open to the outside and to the interior of the housing 2 out.
  • Each vane-like deflecting element 13 to 16 forms a muffler stage and has a plurality of vane or vane-like guide elements 18.
  • the deflecting elements 13 to 16 ' are disk-shaped and slotted bodies 17', each having about 20 guide vane-like guide elements 18.
  • the deflecting elements 13 and the disc-shaped, slotted body 17 ' with their guide vane-like guide elements in one piece. In the housing 2, they extend to the cylindrical peripheral wall. 6
  • each deflecting element 13 to 16 are inclined or bent at a uniform angle of attack ⁇ of, for example, 15 ° (preferably between ° and °) relative to the respectively associated radial planes 19.
  • the angle of attack ⁇ respectively adjacent deflection are made positive or negative, as is apparent from Fig. 2.
  • An originally substantially axially directed flow is therefore deflected respectively.
  • the disk-shaped bodies 17 ' are flat sheet metal rings and receive slices 18' which are narrow as well as radially and straight from the outside to the inside as a disk blank.
  • the guide elements 18 are due to the slots 18 'and because of the circular ring shape of the disc-shaped body 17' each circular-sector-shaped. Due to the positive and / or negative angle of the vanes are slot-shaped passage openings in each deflector with the result that the gaseous medium can flow independently of the respective distractions in the longitudinal direction of the housing 2 through the deflecting elements 13 to 16.
  • the housing 2 of the muffler 1 does not have to be completely covered with guide elements 18 having deflection elements corresponding to the elements 13 to 16.
  • the deflecting elements 13 to 16, 16 'for swirling the flow medium along the housing main axis 19' are arranged one behind the other and at a distance from one another, the housing 2 preferably still has a completely unoccupied housing chamber part 2 '.
  • the housing chamber part 2 ' serves as a calming section.
  • a comparatively short support tube 11 (for four deflecting elements) 13 to 16 is provided in connection with a comparatively long housing part 5, which is two or even three times the number could absorb deflecting elements. Therefore, it may be useful to exploit the possibilities resulting from the compact design options in conjunction with the variation of the number of deflecting to provide for the head piece 3 different housing parts 2 and support tubes 11 with graduated length, which are then assembled depending on the particular application ,
  • deflection elements with guide elements 18 can be provided in adaptation to the conditions of the individual case for selection, which are different in terms of their number, shape and angle of attack.
  • FIGS. 1 and 5 four or five muffler stages 25 are provided in each case. Depending on the respective conditions, however, more or fewer muffler stages 25 can also be arranged along the central support tube 11 / support element 24.
  • the silencer according to the invention also has a very low flow resistance compared to conventional silencers.
  • the deflecting elements can be made of metal and have solid or permeable guide elements, for example in the form of a fine-meshed expanded grid. Furthermore come as materials and plastics or composite materials into consideration.
  • the deflection elements 13 to 16 ' also prevent a backflow in the sound damper 1, which has a thermally favorable effect in the case of an internal combustion engine.
  • variable arrangement and the variable number of deflecting elements in conjunction with variable angles of attack can also filter out certain frequencies or generate desired vibrations.
  • valuable damping properties of the muffler is comparatively simple and compact.
  • the ends of the guide elements 18 which are remote from the housing main axis 19 ' are more inclined than their ends close to the housing main axis 19' or that the guide elements 18 can be twisted at least partially.
  • the vane-wheel-type deflecting elements of the exemplary embodiments preferably have production-oriented, short, circumferentially directed slots 18 "in the foot region of the guide vane-like guide elements 18.
  • each guide element 18 only has a narrow web which is not visible in the figures This is achieved by virtue of the fact that, if required, each wing-like guide element 18 can be given a completely flat, planar shape in spite of the angle of attack .alpha.
  • the guide elements 18 can be additionally soldered punctiform on the hub portion 17 or on the support tube 11 / on the support member 24 after slotting in the circumferential direction in the foot area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Surgical Instruments (AREA)

Claims (19)

  1. Silencieux pour des moteurs à combustion interne, comportant un boîtier (2) dans lequel passe un agent d'écoulement qui est muni d'au moins une chambre de boîtier (3, 5) et dans lequel des éléments déviateurs (13 à 16) s'étendent sur la section transversale intérieure et sont disposés les uns derrière les autres et à distance les uns des autres dans la principale direction d'écoulement le long d'un axe de boîtier (19') pour dévier chacun en sens contraire l'agent d'écoulement,
    dans lequel il est prévu comme éléments déviateurs (13 à 16) des corps (17') en forme de disque, munis de fentes (18') et équipés d'éléments de guidage (18) qui délimitent les fentes (18'), caractérisé en ce que
    a) les éléments déviateurs (13 à 16) se présentent comme des roues à palettes et
    b) comportent, comme un distributeur annulaire de turbine, des éléments de guidage (18) et des fentes (18') chacun sous forme d'aube directrice et
    c) que, sur des éléments déviateurs (13 à 16) voisins, chacun des éléments de guidage (18) sous forme d'aube directrice est disposé ou recourbé en sens contraire pour produire entre les éléments déviateurs (13 à 16) un écoulement de circulation qui se superpose à l'écoulement en direction axiale.
  2. Silencieux selon la revendication 1, caractérisé en ce qu'une partie de la chambre de boîtier (5) sert de trajectoire de stabilisation.
  3. Silencieux selon la revendication 1, caractérisé en ce que chacun des corps (17') en forme de disque a des fentes rectilignes.
  4. Silencieux selon la revendication 1, caractérisé en ce que tous les éléments de guidage (18) d'un corps (17') en forme de disque sont recourbés dans le même sens.
  5. Silencieux selon la revendication 1, caractérisé en ce que les extrémités des éléments de guidage (18), à savoir celles qui sont éloignées de l'axe principal de boîtier (19'), ont une courbure plus marquée que ses extrémités proches de l'axe principal de boîtier (19').
  6. Silencieux selon la revendication 1, caractérisé en ce que les éléments de guidage (18) sont au moins en partie tordus.
  7. Silencieux selon la revendication 1, caractérisé en ce que sous forme d'ébauche le corps (17') en forme de disque a une forme d'anneau de cercle.
  8. Silencieux selon la revendication 1, caractérisé en ce que les éléments de guidage (18) ont une forme de secteur d'anneau de cercle.
  9. Silencieux selon la revendication 1, caractérisé en ce que les éléments déviateurs (13 à 16) ainsi que leurs éléments de guidage (18) sont placés entre des parties de chambre de boîtier (2') et (3') sans éléments déviateurs.
  10. Silencieux selon la revendication 1, caractérisé en ce que chacun des éléments déviateurs (13 à 16) forme un étage d'insonorisation.
  11. Silencieux selon la revendication 1, caractérisé par la disposition d'éléments déviateurs (13 à 16), au nombre de trois à cinq ou plus, dont chacun forme un étage d'insonorisation.
  12. Silencieux selon la revendication 1, caractérisé en ce que chaque étage d'insonorisation ou chaque élément déviateur comporte entre environ 10 à 40, de préférence environ 20, éléments de guidage (18) dont chacun se développe en secteur d'anneau de cercle.
  13. Silencieux selon la revendication 1, caractérisé en ce que chacun des éléments déviateurs (13 à 16) comporte en une seule pièce une pièce de moyeu (17) et, en partant de celle-ci radialement vers l'extérieur, des fentes (18') et les éléments de guidage (18) sous forme d'aube directrice.
  14. Silencieux selon la revendication 1, caractérisé en ce que chacun des éléments déviateurs (13 à 16) est disposé sur un tube porteur (11) qui guide l'agent gazeux.
  15. Silencieux selon la revendication 1, caractérisé en ce que les éléments déviateurs (13 à 16) équipés des éléments de guidage (18) sont fabriqués sous forme de corps (17') en disque à partir d'anneaux plats en tôle et comportent sous forme d'ébauches de disque des fentes (18') étroites qui s'étendent radialement et en ligne droite de l'extérieur vers l'intérieur.
  16. Silencieux selon la revendication 1, caractérisé en ce que les angles d'incidence (de +α à - α) inclinés en sens contraire ont la même valeur angulaire absolue.
  17. Silencieux selon la revendication 1, caractérisé en ce que les éléments déviateurs (13 à 16) munis d'une pièce de moyeu (17) sont disposés sur un support (24) ou un élément porteur (11) placé au centre du boîtier (2).
  18. Silencieux selon la revendication 1, caractérisé en ce que la longueur axiale du boîtier (2) et/ou d'une partie de boîtier (3, 5) a des dimensions telles qu'on peut appliquer des éléments déviateurs (13 à 16) en nombre différent et adapté à chaque cas particulier.
  19. Silencieux selon la revendication 1, caractérisé en ce qu'on l'utilise pour le moteur à combustion interne d'un prototype d'avion.
EP03015086A 2002-07-04 2003-07-03 Silencieux Expired - Lifetime EP1380730B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10230044 2002-07-04
DE10230044A DE10230044A1 (de) 2002-07-04 2002-07-04 Schalldämpfer

Publications (2)

Publication Number Publication Date
EP1380730A1 EP1380730A1 (fr) 2004-01-14
EP1380730B1 true EP1380730B1 (fr) 2006-05-24

Family

ID=29723700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03015086A Expired - Lifetime EP1380730B1 (fr) 2002-07-04 2003-07-03 Silencieux

Country Status (4)

Country Link
US (1) US7073626B2 (fr)
EP (1) EP1380730B1 (fr)
AT (1) ATE327420T1 (fr)
DE (2) DE10230044A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPR982302A0 (en) * 2002-01-03 2002-01-31 Pax Fluid Systems Inc. A fluid flow controller
FR2852354B1 (fr) * 2003-03-13 2006-08-04 Giat Ind Sa Dispositif de dilution des gaz d'echappement
AU2003903386A0 (en) * 2003-07-02 2003-07-17 Pax Scientific, Inc Fluid flow control device
DE10336175B4 (de) * 2003-08-07 2012-07-12 Andreas Stihl Ag & Co. Kg Abgasschalldämpfer
US20090045007A1 (en) * 2007-08-13 2009-02-19 Counts Paul H Muffler with cyclonic plates
ES2350358B1 (es) * 2008-04-18 2011-11-08 Pedro Claverias Torres Dispositivo para la construccion de encofrados y tabiques recuperables.
ES2304329B1 (es) * 2008-04-18 2009-09-16 Pedro Claverias Torres Dispositivo para la conformacion de encofrados.
US7926256B2 (en) * 2008-10-27 2011-04-19 General Electric Company Inlet system for an EGR system
US8104572B2 (en) * 2010-01-22 2012-01-31 Butler Boyd L Spin muffler
WO2016137987A1 (fr) 2015-02-24 2016-09-01 Tenneco Automotive Operating Company Inc. Système mélangeur à double vrille
US9534525B2 (en) 2015-05-27 2017-01-03 Tenneco Automotive Operating Company Inc. Mixer assembly for exhaust aftertreatment system
CN108996482B (zh) * 2018-07-18 2020-03-20 杭州科技职业技术学院 一种用于psa制氮机的消音器
KR102140002B1 (ko) * 2019-07-31 2020-08-03 재단법인 파동에너지 극한제어 연구단 유체 소음기

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1797310A (en) * 1931-03-24 Alfbed j
US1340158A (en) * 1917-11-19 1920-05-18 El Dorado Jones Exhaust-muffler
GB198229A (en) * 1922-06-20 1923-05-31 Reginald Ford Improvements in silencers for use with internal combustion engines
US1761971A (en) * 1928-06-25 1930-06-03 Gen Motors Corp Muffler
US1818469A (en) * 1930-01-06 1931-08-11 Elmer R Scott Muffler for engines
US2063270A (en) * 1935-06-03 1936-12-08 Bacchetti-Righetti Giorgio Silencer for internal combustion engines
US2158030A (en) * 1935-06-28 1939-05-09 Aeroplane Improvements Ltd Muffler
US2076827A (en) * 1936-04-21 1937-04-13 Ross Ruth Warren Exhaust muffler
US2359365A (en) * 1943-05-20 1944-10-03 Katcher Morris Muffler
DE848877C (de) 1950-08-18 1952-09-08 Ludwig Rauch Schalldaempfer fuer Verbrennungsmotoren
US2663378A (en) * 1950-12-11 1953-12-22 Keller William Baffle type muffler
SU317295A1 (ru) * 1970-03-23 1986-02-23 Rubinshtejn Sh L Глушитель-искрогаситель
JPS49128124A (fr) * 1973-04-18 1974-12-07
JPS59158308A (ja) * 1983-02-28 1984-09-07 Hisao Kojima 消音装置
KR100306339B1 (ko) * 1999-02-05 2001-09-13 이옥노 내연기관용 소음기

Also Published As

Publication number Publication date
EP1380730A1 (fr) 2004-01-14
US20040065505A1 (en) 2004-04-08
DE10230044A1 (de) 2004-02-05
ATE327420T1 (de) 2006-06-15
DE50303435D1 (de) 2006-06-29
US7073626B2 (en) 2006-07-11

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