EP3244130B1 - Silencieux d'échappement pour une conduite d'échappement, en particulier pour une conduite d'échappement sortant d'une chaudière à combustible liquide - Google Patents

Silencieux d'échappement pour une conduite d'échappement, en particulier pour une conduite d'échappement sortant d'une chaudière à combustible liquide Download PDF

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Publication number
EP3244130B1
EP3244130B1 EP17169620.6A EP17169620A EP3244130B1 EP 3244130 B1 EP3244130 B1 EP 3244130B1 EP 17169620 A EP17169620 A EP 17169620A EP 3244130 B1 EP3244130 B1 EP 3244130B1
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EP
European Patent Office
Prior art keywords
exhaust gas
exhaust
sound
silencer
gas conduit
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.)
Active
Application number
EP17169620.6A
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German (de)
English (en)
Other versions
EP3244130A1 (fr
Inventor
Sebastian Viets
Wilfried Gutzeit
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.)
BDR Thermea Group BV
Original Assignee
BDR Thermea Group BV
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Publication date
Application filed by BDR Thermea Group BV filed Critical BDR Thermea Group BV
Publication of EP3244130A1 publication Critical patent/EP3244130A1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M20/00—Details of combustion chambers, not otherwise provided for, e.g. means for storing heat from flames
    • F23M20/005—Noise absorbing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2210/00—Noise abatement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/30—Specific materials
    • F23J2213/302—Specific materials plastic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/13003—Means for reducing the noise in smoke conducing ducts or systems

Definitions

  • the invention relates to an exhaust gas silencer for an exhaust gas line, in particular for an exhaust gas line emerging from an oil-fired boiler, with a sound-absorbing functional chamber which is connected to at least one exhaust gas inlet and at least one exhaust gas outlet.
  • Exhaust silencers of this type are known in mutually different designs.
  • absorption sound absorbers and reflection sound absorbers.
  • the prior art combines both functional principles in separate functional chambers within an exhaust silencer.
  • absorption silencers have at least one absorption chamber filled with sound-absorbing substance, the absorption chamber can be coupled to the exhaust gas flow via a perforated wall.
  • the absorption chamber can be coupled to the exhaust gas flow via a perforated wall.
  • the known exhaust silencers are thus constructed in a complicated manner. So is in the DE 35 26 609 A1 an exhaust silencer with different function chambers is shown. These are connected to one another via a sound duct.
  • the DE 37 29 219 A1 shows a silencer for a Internal combustion engine.
  • One-piece exhaust silencers are in the DE 22 59 539 shown. This document shows the preamble of claim 1.
  • the invention is based on the object of providing an exhaust silencer of the type mentioned at the beginning which, despite a simple structure, is characterized by good sound absorption.
  • the simpler structure should lead to a cost reduction and also to an optimization of the installation space.
  • At least one second sound-absorbing function chamber is provided and both function chambers are connected to one another via at least one sound-conducting channel
  • at least one second sound-absorbing function chamber being provided and both function chambers being connected to one another via at least one sound-conducting channel
  • the exhaust gas silencer being a one-piece Housing and made of plastic
  • the function chambers and sound guide channels are each smooth-walled and a sound guide channel for connecting the function chambers is assigned to the exhaust gas inlet and a sound guide channel for connecting the function chambers is assigned to the exhaust gas outlet and the sound guide channel assigned to the exhaust gas outlet has a smaller width than that Has exhaust gas inlet assigned sound duct.
  • the further function chamber provided according to the invention forms a structure of function chambers which can be matched to the noise to be damped.
  • the functional chambers preferably have no flat surfaces and also no rectangular basic shapes.
  • a sound duct for connecting the functional chambers is assigned to the exhaust gas inlet.
  • the sound guide channel leads to a distribution of the main flow of the exhaust gas to the at least two functional chambers.
  • a sound conducting channel for connecting the functional chambers is assigned to the exhaust gas outlet. Even shortly before the exhaust gas exits the silencer, there is once again the possibility of sound waves propagating into both chambers.
  • the sound guide channel assigned to the exhaust gas outlet has a smaller width than the sound guide channel assigned to the exhaust gas inlet.
  • the sound guide channel assigned to the exhaust gas outlet does not serve to distribute the inflowing exhaust gas, so it can be made smaller. Sound waves can break down on this smaller-sized sound-conducting channel, so that their attenuation occurs.
  • the exhaust silencer is made as a one-piece housing.
  • the exhaust silencer consists of housing walls, these are made in one piece from plastic. It is not necessary to use sound-absorbing substances, so that production is simplified overall.
  • the plastic can be unreinforced, for example polypropylene is used.
  • the functional chambers and sound-damping channels are smooth-walled. They can be stiffened with ribs or beads.
  • the exhaust silencer according to the invention can be arranged in such a way that condensate can drain off. No condensate bubbles will then form.
  • Flow channels can be equipped with cross-sections that allow large amounts of water to drain off, for example when it rains, without disrupting the operation of the burner.
  • the exhaust silencer according to the invention has a high degree of damping in the frequency range between 50 Hz and 200 Hz.
  • the exhaust silencer according to the invention uses the function of damping through fluid-structure interaction, in which the natural frequencies of the structure are included.
  • the basic principles of absorption and reflection are combined in order to cover a large frequency spectrum with the most compact design possible and to achieve a high level of attenuation.
  • the exhaust silencer in the figures each has a one-piece housing 1.
  • the housing 1 encloses a first functional chamber 2 and a second functional chamber 3.
  • the housing 1 of the exhaust silencer has an exhaust gas inlet 4 and an exhaust gas outlet 5, which are each designed as openings.
  • both functional chambers 2, 3 are placed next to one another, and a wide sound-conducting channel is formed between them.
  • the path of the exhaust gas along a main flow is in Figure 1 indicated by arrows 6. Exhaust gas can flow into both functional chambers 2, 3.
  • a further sound conducting channel is formed, which is indicated by the double arrow 7 is made clear.
  • the narrower sound-conducting channel can connect the two functional chambers 2, 3 to one another, but it can also be formed between a functional chamber 2 and the exhaust gas outlet 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)

Claims (1)

  1. Silencieux d'échappement pour une conduite d'échappement sortant d'une chaudière à combustible liquide, en particulier pour une conduite d'échappement sortant d'une chaudière à combustible liquide, avec une chambre fonctionnelle insonorisante (2), laquelle est reliée à au moins une entrée de gaz d'échappement (4) et à au moins une sortie de gaz d'échappement (5) de manière à conduire un gaz d'échappement, dans lequel il est prévu au moins une deuxième chambre fonctionnelle insonorisante (3) et les deux chambres fonctionnelles (2, 3) sont reliées entre elles par le biais d'au moins un canal de conduction acoustique, dans lequel le silencieux d'échappement est conçu comme un boîtier unitaire en plastique (1), les chambres fonctionnelles (2, 3) ainsi que les canaux de conduction acoustique sont respectivement conçus avec des parois lisses et dans lequel un canal de conduction acoustique destiné à relier les chambres fonctionnelles (2, 3) est attribué à l'entrée de gaz d'échappement (4) et un canal de conduction acoustique destiné à relier les chambres fonctionnelles (2, 3) est attribué à le sortie de gaz d'échappement (5), caractérisé en ce que le canal de conduction acoustique attribué à la sortie de gaz d'échappement (5) présente une plus petite largeur que le canal de conduction acoustique attribué à l'entrée de gaz d'échappement (4).
EP17169620.6A 2016-05-13 2017-05-05 Silencieux d'échappement pour une conduite d'échappement, en particulier pour une conduite d'échappement sortant d'une chaudière à combustible liquide Active EP3244130B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102016108957.5A DE102016108957A1 (de) 2016-05-13 2016-05-13 Abgasschalldämpfer für eine Abgasleitung, insbesondere für eine aus einem ölbefeuerten Kessel austretende Abgasleitung

Publications (2)

Publication Number Publication Date
EP3244130A1 EP3244130A1 (fr) 2017-11-15
EP3244130B1 true EP3244130B1 (fr) 2020-12-02

Family

ID=58672427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17169620.6A Active EP3244130B1 (fr) 2016-05-13 2017-05-05 Silencieux d'échappement pour une conduite d'échappement, en particulier pour une conduite d'échappement sortant d'une chaudière à combustible liquide

Country Status (2)

Country Link
EP (1) EP3244130B1 (fr)
DE (1) DE102016108957A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259539A1 (de) * 1971-12-06 1973-06-14 Safety Vehicles Develop Schalldaempfer
US5052513A (en) * 1986-11-26 1991-10-01 Showa Denko Kabushiki Kaisha Noise reductive resin muffler for exhaust system in combustion engine
DE202009009777U1 (de) * 2009-07-17 2010-12-02 Robert Bosch Gmbh Schalldämpfer für ein Heizgerät
DE102011108059A1 (de) * 2011-07-21 2013-01-24 Mann + Hummel Gmbh Abgasschalldämpfer einer Brennkraftmaschine
US20150204280A1 (en) * 2012-08-14 2015-07-23 Volvo Truck Corporation Gas flow unit, a gas treatment device and a combustion engine provided therewith

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3526609A1 (de) * 1985-07-25 1987-02-05 Leistritz Maschfabrik Paul Abgasschalldaempfer
DE3729219C2 (de) * 1986-09-05 2001-08-23 Volkswagen Ag Abgasschalldämpfer
DE19818415C2 (de) * 1998-04-24 2002-11-28 Gerd Raichle Verbrennungsgeräuschminderer für Kessel-Brennereinheiten
US6374944B1 (en) * 2000-05-31 2002-04-23 Eaton Corporation Silencer with internal rain diverter
DE102012019318A1 (de) * 2012-10-02 2014-04-03 Mann + Hummel Gmbh Schalldämpfer
DE102015110199A1 (de) * 2015-06-25 2016-12-29 Eberspächer Exhaust Technology GmbH & Co. KG Abgasschalldämpfer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2259539A1 (de) * 1971-12-06 1973-06-14 Safety Vehicles Develop Schalldaempfer
US5052513A (en) * 1986-11-26 1991-10-01 Showa Denko Kabushiki Kaisha Noise reductive resin muffler for exhaust system in combustion engine
DE202009009777U1 (de) * 2009-07-17 2010-12-02 Robert Bosch Gmbh Schalldämpfer für ein Heizgerät
DE102011108059A1 (de) * 2011-07-21 2013-01-24 Mann + Hummel Gmbh Abgasschalldämpfer einer Brennkraftmaschine
US20150204280A1 (en) * 2012-08-14 2015-07-23 Volvo Truck Corporation Gas flow unit, a gas treatment device and a combustion engine provided therewith

Also Published As

Publication number Publication date
EP3244130A1 (fr) 2017-11-15
DE102016108957A1 (de) 2017-11-16

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