EP0732543B1 - Gasbrenner - Google Patents

Gasbrenner Download PDF

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Publication number
EP0732543B1
EP0732543B1 EP19960301695 EP96301695A EP0732543B1 EP 0732543 B1 EP0732543 B1 EP 0732543B1 EP 19960301695 EP19960301695 EP 19960301695 EP 96301695 A EP96301695 A EP 96301695A EP 0732543 B1 EP0732543 B1 EP 0732543B1
Authority
EP
European Patent Office
Prior art keywords
tube
gas burner
flue duct
flue
burner according
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
EP19960301695
Other languages
English (en)
French (fr)
Other versions
EP0732543A3 (de
EP0732543A2 (de
Inventor
Roy Bratley
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.)
CARADON IDEAL Ltd
Original Assignee
CARADON IDEAL Ltd
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 CARADON IDEAL Ltd filed Critical CARADON IDEAL Ltd
Publication of EP0732543A2 publication Critical patent/EP0732543A2/de
Publication of EP0732543A3 publication Critical patent/EP0732543A3/de
Application granted granted Critical
Publication of EP0732543B1 publication Critical patent/EP0732543B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
    • F23L17/04—Balanced-flue arrangements, i.e. devices which combine air inlet to combustion unit with smoke outlet
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00—Fittings for chimneys or flues 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2211/00—Flue gas duct systems
    • F23J2211/10—Balanced flues (combining air supply and flue gas exhaust)
    • F23J2211/101—Balanced flues (combining air supply and flue gas exhaust) with coaxial duct arrangement
    • 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

  • This invention relates to gas burners, and is concerned especially, but not necessarily exclusively, with gas burners suitable for domestic boilers.
  • the present invention seeks to provide a simple and economic solution to the problem of noise generation and in accordance with the invention there is provided a gas burner with a combustion chamber, a flue duct for conducting flue gases from the combustion chamber and a tube is mounted in parallel with the flue duct, the cross-section of the tube being smaller than that of the flue duct, and the tube having an open end communicating with the interior of the flue duct, the other end of the tube being closed and the length of the tube being substantially equal to one quarter the wavelength of noise to be suppressed.
  • the invention also provides a boiler comprising a gas burner and a flue, the flue including a quarter wave tube as described above.
  • the concentric flue illustrated in Figure 1 includes a portion of an inner duct 1 surrounded coaxially by an outer duct 2.
  • the inner duct defines an outlet for combustion gases from the combustion chamber of the gas, whereas the annular passage defined between the inner and outer ducts forms an inlet through which air for combustion is drawn into the boiler.
  • a rubber weather seal surrounds the end of the outer duct and a grille 4 is fitted to the ends of the ducts 1,2.
  • a noise suppressing tube 3 is mounted coaxially within the inner flue duct 1. The length of this tube is chosen to be one quarter the wavelength of the resonant noise to be attenuated, the wavelength typically being between 0.5 m and 1.5 m.
  • the upstream end of the tube is open to the interior of the flue duct, and the other end of the tube is closed.
  • the downstream end of the tube is fitted to a socket 6 formed integrally with the grille 4 and supported by radial spokes 8 whereby the socket seals the end of the tube 3 and supports the tube in the flue duct 1.
  • the diameter of the tube 3 is between 20mm and 30mm, and the diameter of the inner flue duct 1 is approximately 60mm.
  • the ratio of inner flue duct diameter to tube diameter is preferable greater than 2:1.
  • Figures 2a-d show other possible arrangements of the tube and a flue duct, but other arrangements are possible without departing from the scope of the invention.
  • the tube is mounted at an elbow of the flue duct and branches from the duct.
  • the quarter wave tube is also mounted at the elbow but is accommodated within the flue duct and has its downstream end open.
  • Figures 2c and 2d show arrangements in which the quarter wave tube is positioned at an intermediate location along the flue duct, in one case with the open end upstream and in the other case with the open end downstream.

Claims (10)

  1. Gasbrenner mit einer Verbrennungskammer, einer Abgasführung (1) für das Ableiten der Rauchgase aus der Brennkammer und einem parallel zur Abgasführung montierten Rohr (3), wobei der Querschnitt des Rohrs unter dem der Abgasführung (1) liegt und das Rohr ein offenes Ende aufweist, welches mit dem Innern der Abgasführung kommuniziert, während das andere Ende des Rohrs geschlossen ist, und wobei die Länge des Rohrs im wesentlichen einem Viertel der Wellenlänge des zu vermeidenden Lärms entspricht.
  2. Gasbrenner gemäß Anspruch 1, bei welchem die Abgasführung und das Rohr (3) koaxial sind.
  3. Gasbrenner gemäß Anspruch 1 oder 2, bei welchem das Rohr (3) im Innern der Abgasführung montiert ist.
  4. Gasbrenner gemäß Anspruch 1 oder 2, bei welchem das Rohr (3) außerhalb der Abgasführung montiert ist.
  5. Gasbrenner gemäß allen vorstehenden Ansprüchen, bei welchem das offene Ende des Rohrs in Zugrichtung nach dem geschlossenen Ende liegt.
  6. Gasbrenner gemäß den vorstehenden Ansprüchen 1 bis 3, bei welchem das offene Ende des Rohrs in Zugrichtung vor dem geschlossenen Ende liegt.
  7. Gasbrenner gemäß allen vorstehenden Ansprüchen, bei welchem das andere Ende des Rohrs in einer Fassung (6) mündet, welche ausgelegt ist, um das Ende des Rohrs aufzunehmen und dicht abzuschließen.
  8. Gasbrenner gemäß allen vorstehenden Ansprüchen, bei welchem die Wellenlänge des zu vermeidenden Lärms zwischen 0,5m und 1,5m liegt.
  9. Gasbrenner gemäß Anspruch 8, bei welchem das Verhältnis zwischen dem Innendurchmesser der Abgasführung (1) und dem Durchmesser des Rohrs (3) größer als 2:1 ist.
  10. Boiler, der einen Gasbrenner beinhaltet, wie er in allen vorstehenden Ansprüchen definiert wird.
EP19960301695 1995-03-14 1996-03-13 Gasbrenner Expired - Lifetime EP0732543B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9505088 1995-03-14
GBGB9505088.6A GB9505088D0 (en) 1995-03-14 1995-03-14 Gas burner

Publications (3)

Publication Number Publication Date
EP0732543A2 EP0732543A2 (de) 1996-09-18
EP0732543A3 EP0732543A3 (de) 1996-10-02
EP0732543B1 true EP0732543B1 (de) 2000-06-28

Family

ID=10771153

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960301695 Expired - Lifetime EP0732543B1 (de) 1995-03-14 1996-03-13 Gasbrenner

Country Status (3)

Country Link
EP (1) EP0732543B1 (de)
DE (1) DE69608981D1 (de)
GB (1) GB9505088D0 (de)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2017744A (en) * 1934-04-30 1935-10-15 Maxim Silencer Co Sound attenuating device
US2043030A (en) * 1935-04-02 1936-06-02 Maxim Silencer Co Sound attenuating device

Also Published As

Publication number Publication date
EP0732543A3 (de) 1996-10-02
EP0732543A2 (de) 1996-09-18
GB9505088D0 (en) 1995-05-03
DE69608981D1 (de) 2000-08-03

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