CH313645A - Sound attenuation device for explosion engines - Google Patents
Sound attenuation device for explosion enginesInfo
- Publication number
- CH313645A CH313645A CH313645DA CH313645A CH 313645 A CH313645 A CH 313645A CH 313645D A CH313645D A CH 313645DA CH 313645 A CH313645 A CH 313645A
- Authority
- CH
- Switzerland
- Prior art keywords
- housing
- screw
- tube
- perforated
- explosion engines
- Prior art date
Links
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
- F01N1/12—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels
- F01N1/125—Silencing apparatus characterised by method of silencing by reducing exhaust energy by throttling or whirling using spirally or helically shaped channels in combination with sound-absorbing materials
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Description
Schalldämpfungsvorrichtung für Explosionsmotoren Gegenstand der vorliegenden Erfindung ist eine Schalldämpfungsvorrichtung für Ex plosionsmotoren.
Die vorliegende Erfindung bezweckt die Schaffung einer Schalldämpfungsvorrichtung, welche bei möglichst kleiner Leistungsvermin derung des Motors eine gute Schalldämpfung erzielen lässt.
Erfindungsgemäss besitzt die Vorrichtung ein Metallgehäuse mit einer Eintritts- und einer Austrittsöffnung für das Gas, eine im Gehäuse angeordnete, auf einem ersten per forierten Rohr aufgebrachte Schnecke, welches Rohr mit feuerfestem Fasermaterial gefüllt ist, und ein die Schnecke umgebendes, inner halb des Gehäuses angeordnetes zweites per foriertes Rohr, wobei zwischen dem zweiten Rohr und dem Gehäuse eine Schicht aus feuer festem Material vorhanden ist.
Durch die Schnecke wird dem Auspuffgas eine schraubenlinienförmige Bewegung er teilt, wobei ein Teil des Gases in die zwischen Gehäuse und zweitem Rohr befindliehe Schicht austritt und ein weiterer Teil-in das Faser material im ersten Rohr eindringt, was eine Expansion des Gases zur Folge hat.
Ein Ausführungsbeispiel der Erfindung ist in der beiliegenden Zeichnung dargestellt. Wie aus dieser hervorgeht, besteht-die Dämp- 2 fungsvorrichtung <B>-</B> wenn man in der Be- schreibung der Teile von aussen nach innen vorgelit <B>-</B> aussen aus einem vorzugsweise zy- lindrischen Metallgehäuse<B>1,</B> welches eine Ein tritts- und eine Austrittsöffnung aufweist und mit dem Auspuffrohr des Motors verbunden wird;
es folgt eine Schicht 2 aus Mineral- fasern, wie z. B. Asbest, Schlaekenwolle, Glas wolle oder anderem feuerfestem Fasermaterial; daran schliesst ein Rohr<B>3</B> an, welches aus Drahtgefleeht oder gelochtem Blech bestehen kann und welches zur Befestigung der ge nannten Faserschicht dient; es folgt eine Schnecke 4, aulliegend auf einem Rohr<B>5</B> aus Drahtgeflecht oder gelochtem Blech und schliesslich eine Füllung<B>6</B> aus Fasermaterial, wie Glaswolle, Asbest, Schlackenwolle oder anderem feuerfestem Fasermaterial, welches in dem die Schnecke tragenden Rohr enthalten ist. Das Gehäuse<B>1</B> und die Rohre<B>3</B> und<B>5</B> sind koaxial zueinander angeordnet.
Die Win- dungsteilung der Schnecke, die Anzahl der Windungen sowie ihr Durchmesser hängen von der Leitung, dem Zylindervolumen und von andern Kennzeichen des Motors ab.
Wie Versuche gezeigt haben, entstehen im Auspuffrohr geringe Gegendrüeke, so dass nur äusserst kleine Leistungsverluste entstehen.
Soundproofing device for explosion engines The present invention is a soundproofing device for explosion engines.
The present invention aims to create a soundproofing device which can achieve good soundproofing with the smallest possible reduction in engine power.
According to the invention, the device has a metal housing with an inlet and an outlet opening for the gas, a screw arranged in the housing, attached to a first perforated tube, which tube is filled with refractory fiber material, and a screw surrounding the screw, arranged within the housing second perforated pipe, a layer of refractory material being present between the second pipe and the housing.
Through the screw, the exhaust gas is a helical movement it divides, with part of the gas exiting the layer located between the housing and the second pipe and another part penetrating the fiber material in the first pipe, which results in an expansion of the gas.
An embodiment of the invention is shown in the accompanying drawing. As can be seen from this, the damping device consists of a preferably cylindrical metal housing if one moves from the outside to the inside in the description of the parts <B> 1 </B> which has an inlet and an outlet opening and is connected to the exhaust pipe of the engine;
this is followed by a layer 2 of mineral fibers, such as B. asbestos, wool, glass wool or other fireproof fiber material; this is followed by a pipe <B> 3 </B>, which can consist of wire mesh or perforated sheet metal and which is used to attach the fiber layer mentioned; This is followed by a screw 4, lying on a pipe <B> 5 </B> made of wire mesh or perforated sheet metal and finally a filling <B> 6 </B> made of fiber material such as glass wool, asbestos, slag wool or other refractory fiber material, which contained in the tube carrying the screw. The housing <B> 1 </B> and the tubes <B> 3 </B> and <B> 5 </B> are arranged coaxially to one another.
The pitch of the screw, the number of turns and their diameter depend on the pipe, the cylinder volume and other characteristics of the motor.
As tests have shown, there are low counter-pressures in the exhaust pipe, so that only extremely small power losses occur.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT313645X | 1952-12-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH313645A true CH313645A (en) | 1956-04-30 |
Family
ID=11233517
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH313645D CH313645A (en) | 1952-12-22 | 1953-05-04 | Sound attenuation device for explosion engines |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH313645A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3830489A1 (en) * | 1987-09-09 | 1989-03-30 | Glaenzer Spicer Sa | PART OF AN EXHAUST SYSTEM, PARTICULARLY FOR COMBUSTION ENGINES |
WO1998019054A1 (en) | 1996-10-31 | 1998-05-07 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Exhaust muff |
WO1999050539A2 (en) | 1998-03-30 | 1999-10-07 | Silentor Notox A/S | A silencer and a method of operating a vehicle |
US6332510B1 (en) | 1996-09-30 | 2001-12-25 | Silentor Holding A/S | Gas flow silencer |
US6520286B1 (en) | 1996-09-30 | 2003-02-18 | Silentor Holding A/S | Silencer and a method of operating a vehicle |
US7537083B2 (en) | 2000-03-21 | 2009-05-26 | Silentor Holdings A/S | Silencer containing one or more porous bodies |
-
1953
- 1953-05-04 CH CH313645D patent/CH313645A/en unknown
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3830489A1 (en) * | 1987-09-09 | 1989-03-30 | Glaenzer Spicer Sa | PART OF AN EXHAUST SYSTEM, PARTICULARLY FOR COMBUSTION ENGINES |
US6332510B1 (en) | 1996-09-30 | 2001-12-25 | Silentor Holding A/S | Gas flow silencer |
US6520286B1 (en) | 1996-09-30 | 2003-02-18 | Silentor Holding A/S | Silencer and a method of operating a vehicle |
WO1998019054A1 (en) | 1996-10-31 | 1998-05-07 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Exhaust muff |
DE19644089A1 (en) * | 1996-10-31 | 1998-05-14 | Deutsch Zentr Luft & Raumfahrt | Silencer |
WO1999050539A2 (en) | 1998-03-30 | 1999-10-07 | Silentor Notox A/S | A silencer and a method of operating a vehicle |
US7537083B2 (en) | 2000-03-21 | 2009-05-26 | Silentor Holdings A/S | Silencer containing one or more porous bodies |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE3724315A1 (en) | MUFFLER | |
DE2821164A1 (en) | HOT GAS ENGINE | |
DE1476493A1 (en) | Acoustic device | |
CH313645A (en) | Sound attenuation device for explosion engines | |
DE2907320A1 (en) | SILENCERS FOR COMBUSTION ENGINES | |
DE2827237A1 (en) | Absorption type IC engine exhaust silencer - has absorbent layer as preformed sectional pads or mat covered by woven sleeve clipped to tube | |
DE3540231C2 (en) | ||
DE2259631B2 (en) | Flue gas exhaust pipe for a burner system | |
DE1601469A1 (en) | Hot gas engine | |
DE969092C (en) | Soundproofing system consisting of a line with a large volume and main silencer, especially for motorcycles | |
DE2703865A1 (en) | DEVICE FOR ABSORBING ACOUSTIC ENERGY | |
AT137590B (en) | Silencer. | |
DE469260C (en) | Silencer for internal combustion engines | |
DE2365848C2 (en) | ENCLOSED COOLING MACHINE | |
DE2245932B2 (en) | Outboard drive | |
DE308866C (en) | ||
DE113748C (en) | ||
DE866744C (en) | Sound absorber for cracking noises especially contained in the exhaust of two-stroke engines and extremely steep pressure front | |
DE2624906A1 (en) | IC engine silencer unit - has inorganic granulated sound absorbent material around perforated exhaust tube and compressed into silencer housing | |
DE163975C (en) | ||
DE975691C (en) | Sound absorber for installation in pipelines for noise dampening in flowing gases of all kinds | |
WO2006066540A1 (en) | Exhaust gas silencer for a vehicle heating device | |
DE3413998A1 (en) | Silencing system for combustion engines | |
DE1476539C (en) | Exhaust silencer on an internal combustion engine or a burner system for pulsating combustion | |
AT117344B (en) | Mufflers for internal combustion engines. |