EP0148485A2 - Partie d'un carter de brûleur du côté de l'aspiration d'air - Google Patents

Partie d'un carter de brûleur du côté de l'aspiration d'air Download PDF

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Publication number
EP0148485A2
EP0148485A2 EP84116049A EP84116049A EP0148485A2 EP 0148485 A2 EP0148485 A2 EP 0148485A2 EP 84116049 A EP84116049 A EP 84116049A EP 84116049 A EP84116049 A EP 84116049A EP 0148485 A2 EP0148485 A2 EP 0148485A2
Authority
EP
European Patent Office
Prior art keywords
housing part
part according
housing
air
opening
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.)
Granted
Application number
EP84116049A
Other languages
German (de)
English (en)
Other versions
EP0148485A3 (en
EP0148485B1 (fr
Inventor
Siegfried Dipl.-Ing. Weishaupt
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.)
Max Weishaupt GmbH
Original Assignee
Max Weishaupt GmbH
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 Max Weishaupt GmbH filed Critical Max Weishaupt GmbH
Priority to AT84116049T priority Critical patent/ATE34827T1/de
Publication of EP0148485A2 publication Critical patent/EP0148485A2/fr
Publication of EP0148485A3 publication Critical patent/EP0148485A3/de
Application granted granted Critical
Publication of EP0148485B1 publication Critical patent/EP0148485B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/36—Details, e.g. burner cooling means, noise reduction means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/663—Sound attenuation
    • F04D29/664—Sound attenuation by means of sound absorbing material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D11/00—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space
    • F23D11/001—Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space spraying nozzle combined with forced draft fan in one unit

Definitions

  • the invention relates to an air intake housing part of a burner housing with the features of the preamble of claim 1.
  • Burners of the type in question often develop disturbingly high noise levels due to the air intake, in particular in the case of large burners, in particular for industrial use, for example in the order of 90 dB. To remedy this, the entire burner housing has so far been covered with a sound-absorbing hood. Intake silencers have also been provided in the area of the air inlet opening of the air intake housing. These measures are expensive to manufacture and space and bulky, which is particularly noticeable in the course of maintenance work.
  • the sound absorption provided according to the invention is limited to measures on the air intake housing part, in such a way that noise caused by the intake air is damped. This is achieved with the aid of a sound absorber, which is formed in the housing section opposite the air inlet opening.
  • the housing part is preferably designed as an independent component and can be connected to the wall of the burner housing comprising the inlet opening of the jetting wheel with respect to its wall region comprising the air transfer opening.
  • the inner walls of the air intake housing part are lined with sound-absorbing material.
  • the sound absorber has sound reinforcement sides facing both the air inlet opening and the air transition opening, in particular in such a way that the sound reinforcement side facing the air transition opening is arranged opposite a partial region of this opening.
  • the housing section in which the sound absorber is formed is designed as a cover or the like, which is removably attached to the rest of the housing region of the housing part, which is designed as a lower part.
  • This not only facilitates the manufacture of the absorber part; when the cover is removed, the area of the transfer opening and a shaft section of the burner motor which possibly crosses the lower part of the housing part are accessible.
  • the wall area serving to fix the air intake housing part, which includes the air transfer opening, is preferably formed overall on the lower part, while the cover forming the sound absorber comprises the other walls of the housing section.
  • the parting line between the lower part and the cover is provided so far from the air intake opening that it lies above the shaft bushing.
  • the heavy layer is preferably first applied to the inner surfaces of the outer shell in such a way that a tight and load-bearing connection is created between the heavy layer and the outer shell.
  • the space encompassed by the heavy layer is then foamed with the plastic forming the core, so that an open-cell foam pad is formed, the exposed sides, the sound reinforcement sides, of which are then covered with a film preventing the entry of moisture and dirt, in particular by laminating this film on.
  • FIG. 1 to 3 show a large burner of the type in question, which has a burner housing 1, which is connected to a flame head 2 via a hinge connection - these known devices are not described in detail here.
  • An impeller 3 is arranged inside the burner housing 1 and can be driven by a burner motor 4 arranged in an indentation in the one side wall of the burner housing.
  • a burner motor 4 arranged in an indentation in the one side wall of the burner housing.
  • an intermediate shaft 5 is connected, which drives a pump 6 serving the oil supply to the flame head 2.
  • the pump 6 is arranged on the outside of an air intake housing part 7, which is fixed on the other side wall of the burner housing 1.
  • the air intake housing part 7 consists of a lower part 8 and a housing section 9, which is designed as a cover 10.
  • This housing section 9 or cover 10 forms the housing area opposite the air inlet opening 11 of the air intake housing part - hereinafter referred to as housing part for short.
  • the parting line 14 runs between the lower part 8 and the cover 10 of the housing part 7 just above the intermediate shaft 5, so that this and the input region of the impeller 2 or a sieve, which can cover the air passage opening 12 are easily accessible for maintenance purposes when the cover 10 is lifted out of its connection with the lower part 8.
  • the cover 10 comprises or is designed as a sound absorber 15.
  • the wall region 16 is formed in one piece with the lower part 8 and comprises the air transfer opening 12 and is used for connection to the corresponding side wall of the burner housing 1.
  • the wall area is preferably provided with bores 17 around the air transfer opening 12, through which and corresponding bores in the side wall of the burner housing 11 corresponding connecting screw bolts are passed.
  • the inner walls 18 of the lower part 8 of the housing part 7 are provided with the exception of the bearing area 19 for the intermediate shaft 5 or their connection to the shaft of the pump 6 with sound-absorbing material 20.
  • This can be fiber material or preferably an open-pore soft synthetic foam, which is held on the inner walls 18 with the aid of grid-shaped or perforated covers. This sound-absorbing material is used primarily for damping of noise caused by the sucked air.
  • the cover 10 comprises a wall 23 opposite the lower part 8 of the air inlet opening 11 and three side walls 24 and is thus designed to be open to the side wall of the burner housing 1 or to an upper region of the air outlet opening 12.
  • FIG. 4 shows a cross section of the cover 10, which is designed as a sound absorber 15, approximately along the line IV-IV in FIG. 1, the sectional view comprising only this cover 10 or sound absorber 15.
  • the sound absorber 15 comprises a core 25 made of an open-pore plastic foam, for example a flexible polyurethane foam, which is protected on its sound reinforcement sides 21 and 22 by a film laminated onto it against the ingress of moisture and dirt.
  • the sound reinforcement side 21 faces the air inlet opening 11 when the cover is in place, while the sound reinforcement side 22 faces the fan wheel 2 or the air transition opening 12. In this way, noises caused by the sucked-in air as well as those coming from the interior of the burner housing 1 through the air transfer opening 12 are damped
  • the remaining outer surfaces of the core 25 are covered by a plastic mass layer - so-called heavy layer - 27, which consists of a specifically heavier plastic material than the core 25.
  • This heavy layer is primarily used for the insulation of structure-borne noise which passes over the mechanical connections to the burner housing 1 in the direction of the housing part 7.
  • the lid 10 receives the necessary mechanical strength from an outer shell 26, which consists of a glass fiber reinforced plastic.
  • this sound absorber 15 in the form of the cover 10 takes place in such a way that the inner walls of the outer shell 28 are lined with the heavy layer 27 in such a way that a tight and mechanically firm connection is provided. This can be done, for example, by gluing a prefabricated heavy layer or else by spraying on such a layer or the like. A chemical bond is preferably sought between the inner surface of the outer shell 28 and the heavy layer 27. The space then encompassed by the heavy layer 27 is foamed, so that the open-pored soft foam core 25 results. The film 26 is then laminated onto its free surfaces.
  • the parting line 14 has a graduated cross section, so that a positionally secure and tight connection position can be achieved between the cover 10 and the lower part 8.
  • Bores 30 are made in the lower side wall regions of the outer shell 28, which serve to fix the cover 10 to the lower part 8.
  • the dashed line shown in FIG. 4, which extends across the core 25, indicates a rib which serves for mechanical stability between the upper part of the wall region 16 and the remaining region of the lower part 8, or there are corresponding recesses in the core hinted at.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Supply (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Feeding And Controlling Fuel (AREA)
  • Motor Or Generator Frames (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Details Of Fluid Heaters (AREA)
EP84116049A 1983-12-27 1984-12-21 Partie d'un carter de brûleur du côté de l'aspiration d'air Expired EP0148485B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84116049T ATE34827T1 (de) 1983-12-27 1984-12-21 Luftansauggehaeuseteil eines brennergehaeuses.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3347204 1983-12-27
DE3347204A DE3347204C2 (de) 1983-12-27 1983-12-27 Luftansauggehäuse für einen Gebläsebrenner

Publications (3)

Publication Number Publication Date
EP0148485A2 true EP0148485A2 (fr) 1985-07-17
EP0148485A3 EP0148485A3 (en) 1986-02-05
EP0148485B1 EP0148485B1 (fr) 1988-06-01

Family

ID=6218231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84116049A Expired EP0148485B1 (fr) 1983-12-27 1984-12-21 Partie d'un carter de brûleur du côté de l'aspiration d'air

Country Status (3)

Country Link
EP (1) EP0148485B1 (fr)
AT (1) ATE34827T1 (fr)
DE (2) DE3347204C2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10248873A1 (de) * 2002-10-18 2004-05-13 Thermamax Hochtemperaturdämmungen GmbH Dämpfungselement für einen Schalldämpfer sowie Schalldämpfer

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187055A (en) * 1938-03-30 1940-01-16 Regnier Romeo Francis Oil burner
US2456930A (en) * 1945-01-20 1948-12-21 Gilbert & Barker Mfg Co Fan housing construction
DE1263265B (de) * 1963-05-02 1968-03-14 Jenn Air Corp Dachentluefter mit einer Schalldaemmkammer
FR1596223A (fr) * 1968-05-17 1970-06-15
US3537544A (en) * 1968-06-11 1970-11-03 Emerson Electric Co Sound absorbing grille
DE2227426A1 (de) * 1972-06-06 1973-12-20 Texaco Development Corp Oelbrenner, insbesondere haushaltsbrenner, in pistolenbrennerform
DE2555930A1 (de) * 1975-12-12 1977-06-16 Gretsch Unitas Gmbh Lueftungsvorrichtung
WO1984001809A1 (fr) * 1982-10-29 1984-05-10 Vaillant Joh Gmbh & Co Bruleur alimente en combustible fluide

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52122934A (en) * 1976-04-08 1977-10-15 Tomoe Shokai Kk Burner
DE8308544U1 (de) * 1983-03-19 1983-11-24 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Geblaesebrenner

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2187055A (en) * 1938-03-30 1940-01-16 Regnier Romeo Francis Oil burner
US2456930A (en) * 1945-01-20 1948-12-21 Gilbert & Barker Mfg Co Fan housing construction
DE1263265B (de) * 1963-05-02 1968-03-14 Jenn Air Corp Dachentluefter mit einer Schalldaemmkammer
FR1596223A (fr) * 1968-05-17 1970-06-15
US3537544A (en) * 1968-06-11 1970-11-03 Emerson Electric Co Sound absorbing grille
DE2227426A1 (de) * 1972-06-06 1973-12-20 Texaco Development Corp Oelbrenner, insbesondere haushaltsbrenner, in pistolenbrennerform
DE2555930A1 (de) * 1975-12-12 1977-06-16 Gretsch Unitas Gmbh Lueftungsvorrichtung
WO1984001809A1 (fr) * 1982-10-29 1984-05-10 Vaillant Joh Gmbh & Co Bruleur alimente en combustible fluide

Also Published As

Publication number Publication date
EP0148485A3 (en) 1986-02-05
DE3471733D1 (en) 1988-07-07
ATE34827T1 (de) 1988-06-15
DE3347204A1 (de) 1985-07-11
DE3347204C2 (de) 1990-08-02
EP0148485B1 (fr) 1988-06-01

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