EP1281912A1 - Brûleur à gaz atmosphérique avec flammes convergentes - Google Patents

Brûleur à gaz atmosphérique avec flammes convergentes Download PDF

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Publication number
EP1281912A1
EP1281912A1 EP02075365A EP02075365A EP1281912A1 EP 1281912 A1 EP1281912 A1 EP 1281912A1 EP 02075365 A EP02075365 A EP 02075365A EP 02075365 A EP02075365 A EP 02075365A EP 1281912 A1 EP1281912 A1 EP 1281912A1
Authority
EP
European Patent Office
Prior art keywords
burner
shaped
duct
flames
ring
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.)
Withdrawn
Application number
EP02075365A
Other languages
German (de)
English (en)
Inventor
Timoteo c/o Flamgas S.r.l. Pezzutti
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.)
Individual
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 EP1281912A1 publication Critical patent/EP1281912A1/fr
Withdrawn legal-status Critical Current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
    • F23D14/06—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 radial outlets at the burner head
    • 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
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications

Definitions

  • the present Invention regards an atmospheric gas burner with converging root flames preferably used for open flame cooktops or closed chamber equipment, and consists of a Venturi throat (3), which produces the air/gas mixture supplying the burner cap (8).
  • This Venturi throat (3) fits into a circular duct (6) that feeds a ring-shaped duct (7a) which, as the top is slightly open, allows the burner cap (8) to fit in.
  • the crowns of the pilot (Fp) and main (F) flames coming out of the burner cap (8) are fed by the surrounding secondary air as well as the "primary air" (1) air/gas mixture.
  • the purpose of the present invention is to solve these problems and limits and this is done with the special and characteristic shape of the burner cap (8) the bottom part of which consists of a broad cylindrical duct (8a) that leads to a larger truncate conical duct (8b), this acts as a collector to supply the air/gas mixture directly to the converging semicircular slots (11) in this way feeding the main flame (F) and to the cylindrical holes (9) feeding the pilot flame (Fp).
  • This shape allows a pressure drop thanks to the higher volume supplying all of the converging semicircular slots (11) with a constant pressure in the truncate conical duct (8b).
  • the burner in question consists essentially of three elements, an air/gas mixture generator (3) called "Venturi throat", of the known type normally used on atmospheric gas burners that feeds a ring-shaped duct (7a) which in turn feeds the cylindrical duct (8a) and the truncate conical duct (8b) of the burner cap (8) whose special shape and composition can be seen in figures 3, 4 and 6 which show this burner cap (8) in even greater detail.
  • Venturi throat of the known type normally used on atmospheric gas burners that feeds a ring-shaped duct (7a) which in turn feeds the cylindrical duct (8a) and the truncate conical duct (8b) of the burner cap (8) whose special shape and composition can be seen in figures 3, 4 and 6 which show this burner cap (8) in even greater detail.
  • These elements are easy to produce and assemble with normal, widely used equipment.
  • the generator (3) consists of a suitable Venturi throat where the outer end, the one with a smaller diameter, is supplied with the necessary air/gas combustible mixture (1) produced and fed by a suitable supply group in said "mixing chamber", the composition and the operation of which, although well-known, will be described below.
  • Said mixing chamber consists of a nozzle fixed on a suitable supporting element. This nozzle is fixed coaxially to the Venturi throat (3) and at a suitable distance from the end of the same.
  • An adjusting bush (2) which slides longitudinally is fitted to the end of the Venturi throat (3).
  • the ring-shaped duct (10) is fixed to the top part of this cylindrical longitudinal tract (7a) and is made of suitable deep-drawn sheet steel.
  • This ring-shaped duct (10) has a hole in the centre where the air/gas mixture (1) passes, and on the outside this sheet steel (10) Is slightly bent upwards to fit the burner cap (8) and further out there is another flat horizontal ring-shaped tract, slightly higher than the first which, joined with the burner cap (8), forms a suitable flat ring-shaped slot of the appropriate size to supply the pilot flames (Fp) of the burner in question through holes (9).
  • In the outer part of the ring-shaped duct (10) there is a ring-shaped slide (7) with a slight downwards slant that protects the body of the burner from dirt and liquids which might dirty it.
  • Burner cap (8) rests on the top part of the ring-shaped duct (10) and this burner cap is the subject of the innovation and the present invention.
  • This burner cap (8) is made up of a single cylindrical piece of well-know material with quite a large cylindrical notch inside which receives the air/gas mixture supplied by the ring-shaped duct (7) and directs it in a uniform fashion In both a lateral radial and lower radial direction feeding the main (F) and pilot (Fp) flames fig. 2 and 3.
  • the crown of the main (F) and pilot (Fp) flames is the Innovation of the present invention compared to traditional burners
  • the semicircular converging slots with this shape (fig. 4 and 6, points 12 and 13) are designed specifically so that when the ignited air/gas mixture comes out of said slots, the secondary air hits the root of the flame both at the bottom and the top. Furthermore the geometry of the semicircular converging slot makes it possible to use an outlet section with a much higher volume and a much smaller but very powerful burner.
  • Another fundamental characteristic of the present invention is the possibility of positioning the burner cap (8) at any point of the ring-shaped duct (10) without obligatory mechanical references so that the user can be sure that the burner works perfectly in any position using grills of different types and notably reducing the space between the grill and the root of the flame compared to traditional burners and therefore increasing the output.
  • the internal section of the semicircle is converging (fig.6) with no flash backs compared to traditional burners and creating an apex so that if the flame touches the grill (14) (fig.5) It is deflected and flows correctly without causing any problems with the combustion of the air/gas mixture of any kind.
  • this burner solves all the problems relevant to positioning the burner cap (8) depending on the type of saucepan support grills used (fig.5), so that the user no longer has to check this position, a common problem with other burners, with the possibility of reducing the gap between the base of the saucepan support grills and the burner cap (8) so that the bottom of the saucepan is nearer to the flames and the burner output is higher. It is also possible to Invert the profile of the converging semicircular slots (11) of the burner cap (8) for other uses. Finally the burner has a high operating power by concentrating a large outlet section on a very small burner. Therefore the burner has a wide range of power variations throughout Its field of use with a combustion which is practically always perfect.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
EP02075365A 2001-07-30 2002-01-25 Brûleur à gaz atmosphérique avec flammes convergentes Withdrawn EP1281912A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN010052 2001-07-30
ITPN20010052 ITPN20010052A1 (it) 2001-07-30 2001-07-30 Bruciatore atmosferico a gas con fiamme a radici convergenti

Publications (1)

Publication Number Publication Date
EP1281912A1 true EP1281912A1 (fr) 2003-02-05

Family

ID=11453295

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02075365A Withdrawn EP1281912A1 (fr) 2001-07-30 2002-01-25 Brûleur à gaz atmosphérique avec flammes convergentes

Country Status (2)

Country Link
EP (1) EP1281912A1 (fr)
IT (1) ITPN20010052A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106765107A (zh) * 2016-12-02 2017-05-31 中山市樱雪集团有限公司 一种燃气灶具的燃烧器
CN108006642B (zh) * 2017-06-23 2023-11-17 宁波方太厨具有限公司 一种燃气灶具的燃烧器火盖

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825402A (en) * 1972-11-16 1974-07-23 Lincoln Brass Works Gas burner
DE2525305A1 (de) * 1975-06-06 1976-12-16 Pensenskij Kompressornyj Sawod Gasbrenner
GB1521481A (en) * 1975-10-30 1978-08-16 Valor Newhome Ltd Gas burner
FR2642148A1 (fr) * 1989-01-20 1990-07-27 Sourdillon Airindex Sa Bruleur multi-gaz avec reglage de l'injecteur par le dessus
US5139417A (en) * 1991-01-22 1992-08-18 General Electric Company Gas burner with improved primary port arrangement

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3825402A (en) * 1972-11-16 1974-07-23 Lincoln Brass Works Gas burner
DE2525305A1 (de) * 1975-06-06 1976-12-16 Pensenskij Kompressornyj Sawod Gasbrenner
GB1521481A (en) * 1975-10-30 1978-08-16 Valor Newhome Ltd Gas burner
FR2642148A1 (fr) * 1989-01-20 1990-07-27 Sourdillon Airindex Sa Bruleur multi-gaz avec reglage de l'injecteur par le dessus
US5139417A (en) * 1991-01-22 1992-08-18 General Electric Company Gas burner with improved primary port arrangement

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106765107A (zh) * 2016-12-02 2017-05-31 中山市樱雪集团有限公司 一种燃气灶具的燃烧器
CN108006642B (zh) * 2017-06-23 2023-11-17 宁波方太厨具有限公司 一种燃气灶具的燃烧器火盖

Also Published As

Publication number Publication date
ITPN20010052A1 (it) 2003-01-30

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