EP0565145A2 - Atmosphärischer Gasbrenner für Wassererhitzer, insbesondere Durchlauferhitzer - Google Patents

Atmosphärischer Gasbrenner für Wassererhitzer, insbesondere Durchlauferhitzer Download PDF

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Publication number
EP0565145A2
EP0565145A2 EP93200492A EP93200492A EP0565145A2 EP 0565145 A2 EP0565145 A2 EP 0565145A2 EP 93200492 A EP93200492 A EP 93200492A EP 93200492 A EP93200492 A EP 93200492A EP 0565145 A2 EP0565145 A2 EP 0565145A2
Authority
EP
European Patent Office
Prior art keywords
flame
gas burner
diffusers
type
burner
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
EP93200492A
Other languages
English (en)
French (fr)
Other versions
EP0565145A3 (de
EP0565145B1 (de
Inventor
Giorgio Scanferla
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.)
Scanferla Giorgio
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0565145A2 publication Critical patent/EP0565145A2/de
Publication of EP0565145A3 publication Critical patent/EP0565145A3/de
Application granted granted Critical
Publication of EP0565145B1 publication Critical patent/EP0565145B1/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
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/10—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head
    • F23D14/105—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with elongated tubular burner head with injector axis parallel to the burner head axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
    • F23D14/045—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/70—Baffles or like flow-disturbing devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/007—Mixing tubes, air supply regulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel

Definitions

  • This invention relates to a gas burner of the atmospheric type, intended for use in water heating appliances and comprising a plurality of flame diffusers arranged to lie at a common level in parallel flame rows.
  • gas burner of the atmospheric type means here a device in which the theoretical combustion air is partly pre-mixed with the fuel gas at the burner inlet by the gas flow (primary air) and partly fed to the flames (secondary air) by natural draft.
  • gas burners of the atmospheric type are widely used in water heating appliances, such as home water heaters or boilers of the so-called instant type for heating sanitary water and/or interior spaces.
  • Element burners comprise a plurality of flame diffusers which are flattish in shape and arranged to lie at a common level in parallel flame rows.
  • the diffusers are either packed on suitable frames or welded crosswise to a feed header tube which also carries a mixing device such as a Venturi nozzle.
  • burners of this type carry comparatively high manufacturing costs due to they being material intensive and involving complicated assembly procedures.
  • the underlying technical problem of this invention is, therefore, to provide a gas burner of the atmospheric type, which affords correct mutual ignition of the flames on starting, as well as being low in cost and easy to assemble.
  • a burner as indicated being characterized in that it comprises: at least one header conduit extending perpendicularly to, and in fluid communication with, said flame diffusers, said at least one header conduit being provided at the top with a plurality of flame passageways extending through a top wall thereof and being substantially coplanar with said diffusers; and at least one gas/air mixing device in fluid communication with said flame diffusers and said at least one header conduit.
  • the burner of this invention can deliver a higher thermal power which will be proportional to the increased volume flow rate of the gas/air mixture issuing from the header conduit.
  • a gas burner of the atmospheric type according to this invention.
  • the burner 1 comprises a box-type body 3 formed conventionally by joining together, as by seam folding, two juxtaposed metal sheets which have been dished to respectively define a top portion 4 and a bottom portion 5 of the burner.
  • a plurality of flame diffusers 2 are Formed in the box-type body 3 of the burner 1 .
  • slits 12 Provided between the flame diffusers 2 are a plurality of slits 12, set at pitch distances apart and extending parallel to the diffusers, which slits are to function as passageways for the secondary combustion air.
  • the flame diffusers 2 which are formed by suitably dishing the top 4 and bottom 5 portions of the burner 1, comprise a box-type body 12 having at the top plural openings 15, with each opening constituting one flame passageway.
  • each box-type body 12 has a partition 13 fixed therein which is through-penetrated by holes 14 and allows even delivery of a gas/air mixture to the openings 15.
  • the diffusers 2 being formed at mutual spacings, are in fluid communication with two header conduits 6, 7 which extend across them and are formed by suitably dishing the top 4 and bottom 5 portions of the burner.
  • Each header conduit 6, 7 is provided upwardly with plural openings 8 constituting as many flame passageways and extending through a top wall 6a, 7a thereof.
  • the walls 6a and 7a, and hence the flame passageways 8, are substantially coplanar with the diffusers 2.
  • conduits 6, 7 are also formed by suitably dishing the top 4 and bottom 5 portions of the burner 1.
  • a partition 10. through-penetrated by holes 11, is fixed inside each header conduit 6, 7 in the region of the joint between the top 4 and bottom 5 portions of the burner 1.
  • the burner 1 of this invention further comprises two mixing devices 16 and 17, e.g. of the so-called Venturi type, which are conventionally supported on the body 3 parallel to two intermediate flame diffusers 2.
  • the mixing devices 16 and 17 include chambers 18, 19 carrying on their interiors respective Venturi nozzles in fluid communication with the conduits 6 and 7 through openings, all designated 21, formed in the side walls of the conduits.
  • the burner 1 of this invention when run through repeated ignition tests, has shown none of the ignition faults which affect state-of-art gas burners of the atmospheric type.
  • the burner 1 developed a most even flame bed and a very high thermal power for a given bulk. Additionally, the burner 1 of this invention is uniquely simple in construction, it incorporating to a single box-type body 3 both the flame diffusers 2 and the header conduits 6 and 7, each formed with its own flame passageways 8.
  • This body 3 leads to advantageous lower costs by having just two stamped or dished metal sheets joined to each other as by a seam folding process.
  • other manufacturing techniques and materials may be used to advantage for making the burner 1 or component parts thereof, such as an aluminum die-casting method.
  • the construction of the body 3 of the burner 1 allows one or more gas/air mixing devices to be arranged either parallel or perpendicular to the flame diffusers 2, thereby making in either case for optimum utilization of the available space within each water heater unit.
  • perforated partitions 10 and 13 affords a more uniform distribution of the gas/primary air mixture and attendant less chance of backfiring.
  • the constructional features of the burner 1 enable the dimensions, and hence the thermal power delivered by the burner, to be adjusted as desired by simply changing the number of the flame rows at the dishing stage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP93200492A 1992-03-06 1993-02-20 Atmosphärischer Gasbrenner für Wassererhitzer, insbesondere Durchlauferhitzer Expired - Lifetime EP0565145B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI920521A IT1254668B (it) 1992-03-06 1992-03-06 Bruciatore a gas di tipo atmosferico per apparecchi scalda-acqua in particolare del tipo cosiddetto istantaneo
ITMI920521 1992-03-06

Publications (3)

Publication Number Publication Date
EP0565145A2 true EP0565145A2 (de) 1993-10-13
EP0565145A3 EP0565145A3 (de) 1993-10-20
EP0565145B1 EP0565145B1 (de) 1996-10-23

Family

ID=11362309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93200492A Expired - Lifetime EP0565145B1 (de) 1992-03-06 1993-02-20 Atmosphärischer Gasbrenner für Wassererhitzer, insbesondere Durchlauferhitzer

Country Status (4)

Country Link
EP (1) EP0565145B1 (de)
KR (1) KR930020080A (de)
ES (1) ES2095556T3 (de)
IT (1) IT1254668B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402099B (de) * 1994-09-19 1997-01-27 Vaillant Gmbh Brenner
WO2004111536A1 (en) * 2003-06-19 2004-12-23 Worgas Bruciatori S.R.L. Burner with diffuser resistant to high operating temperatures

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1039496A (en) * 1964-01-17 1966-08-17 Duiker App Nfabriek N V Tubular gasburner
US3285318A (en) * 1961-08-10 1966-11-15 Pioneer Mfg Co Furnace and burner unit
FR1492997A (fr) * 1966-07-11 1967-08-25 Rosieres Usines Brûleurs juxtaposables à interconnexion d'allumage pour formation de foyers à gaz à nombre de rampes réglable
DE2132968A1 (de) * 1970-07-04 1972-01-13 Guiseppe Fogliani Gasbrenner
DE2357882A1 (de) * 1972-11-17 1974-05-22 Ferroli S P A Ind Riscaldament Brenner fuer gasfoermigen brennstoff, insbesondere zu verwenden bei wasserheizkesseln
DE9110245U1 (de) * 1990-08-20 1991-09-26 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Düsenplatte

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3285318A (en) * 1961-08-10 1966-11-15 Pioneer Mfg Co Furnace and burner unit
GB1039496A (en) * 1964-01-17 1966-08-17 Duiker App Nfabriek N V Tubular gasburner
FR1492997A (fr) * 1966-07-11 1967-08-25 Rosieres Usines Brûleurs juxtaposables à interconnexion d'allumage pour formation de foyers à gaz à nombre de rampes réglable
DE2132968A1 (de) * 1970-07-04 1972-01-13 Guiseppe Fogliani Gasbrenner
DE2357882A1 (de) * 1972-11-17 1974-05-22 Ferroli S P A Ind Riscaldament Brenner fuer gasfoermigen brennstoff, insbesondere zu verwenden bei wasserheizkesseln
DE9110245U1 (de) * 1990-08-20 1991-09-26 Joh. Vaillant Gmbh U. Co, 5630 Remscheid Düsenplatte

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT402099B (de) * 1994-09-19 1997-01-27 Vaillant Gmbh Brenner
WO2004111536A1 (en) * 2003-06-19 2004-12-23 Worgas Bruciatori S.R.L. Burner with diffuser resistant to high operating temperatures
EP2484974A3 (de) * 2003-06-19 2014-08-27 Worgas Bruciatori S.R.L. Brenner mit einem gegen hohe Betriebstemperaturen resistenten Diffusor

Also Published As

Publication number Publication date
IT1254668B (it) 1995-09-28
ITMI920521A0 (it) 1992-03-06
EP0565145A3 (de) 1993-10-20
KR930020080A (ko) 1993-10-19
ES2095556T3 (es) 1997-02-16
EP0565145B1 (de) 1996-10-23
ITMI920521A1 (it) 1993-09-06

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