EP1616132B1 - Gas cooker burner of improved type - Google Patents

Gas cooker burner of improved type Download PDF

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Publication number
EP1616132B1
EP1616132B1 EP04726733A EP04726733A EP1616132B1 EP 1616132 B1 EP1616132 B1 EP 1616132B1 EP 04726733 A EP04726733 A EP 04726733A EP 04726733 A EP04726733 A EP 04726733A EP 1616132 B1 EP1616132 B1 EP 1616132B1
Authority
EP
European Patent Office
Prior art keywords
crown
border
notches
burner
annular crown
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
EP04726733A
Other languages
German (de)
French (fr)
Other versions
EP1616132A1 (en
Inventor
Piero Armanni
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.)
SOMIPRESS - METALLI INIETTATI SpA Soc
Original Assignee
SOMIPRESS - METALLI INIETTATI SpA Soc
SOMIPRESS METALLI INIETTATI SpA SOC
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 SOMIPRESS - METALLI INIETTATI SpA Soc, SOMIPRESS METALLI INIETTATI SpA SOC filed Critical SOMIPRESS - METALLI INIETTATI SpA Soc
Publication of EP1616132A1 publication Critical patent/EP1616132A1/en
Application granted granted Critical
Publication of EP1616132B1 publication Critical patent/EP1616132B1/en
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
    • F23D14/06—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
    • 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
    • F23M9/00—Baffles or deflectors for air or combustion products; Flame shields
    • F23M9/02—Baffles or deflectors for air or combustion products; Flame shields in air inlets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C3/00—Stoves or ranges for gaseous fuels
    • F24C3/08—Arrangement or mounting of burners
    • F24C3/085—Arrangement or mounting of burners on ranges

Definitions

  • the present patent application for industrial invention refers to a model of gas cooker burner of improved type, which has been designed to modify the direction of the flames on the bottom of the pot, in the attempt to improve the thermal efficiency of the cooker.
  • Gas cooker burners basically comprise a lower hollow body, on which a disk with a large annular crown is centred and positioned.
  • the crown features a dense series of radial notches and is covered by a circular plate, known as "cap”.
  • the body is configured as a chamber and features a central hole on the bottom wall for the injector nozzle.
  • the gas comes out of the hole with vertical direction after going through a short horizontal conduit located on the lower section of the body, where the gas feed pipe is inserted.
  • the disk with annular crown has a large central hole provided with a collar that surrounds the injector nozzle.
  • the disk with annular crown is also provided with peripheral feet used to centre and place the disk in raised position on the border of the chamber.
  • annular slot exists between the annular crown and the body of the burner. External air can flow inside the chamber through the annular slot, because of the depression created by Venturi effect by the gas that rises through the collar and spreads inside the cap, until it exits through the annular crown with radial direction.
  • the notches of the annular crown become output nozzles when they are bordered by the cap.
  • the flame is stabilised by having the cap protruding by a few millimetres (normally two to four millimetres) from the notched crown.
  • each flame is therefore dominated by the protruding border of the cap, which prevents the flame from rising and imposes a centrifugal horizontal trajectory on the flame, which gradually tends to assume an ascending direction after passing beyond the border of the cap.
  • the purpose of the present invention is to solve this drawback, by providing a solution that can favour the immediate rising of the flames from the notched crown and guarantee the stability of the flames.
  • the model of burner of the invention uses a cap having the same external diameter of the crown, which is provided with an external annular groove along the edge of the upper border.
  • the border of the cap is flush with the sections of each nozzle of the burner, which, for the first time, communicate by means of the annular groove, where the speed of the air-gas mixture is lower than the speed measured in the deeper notches of the crown, resulting in the stabilisation of the flame coming out of the notches.
  • the burner (1) is also provided with a disk (6) with a large annular crown (6a) with a dense series of deep radial notches (6b) covered by a circular cap (7).
  • the disk (6) is also provided with peripheral feet (6c) used to centre and place the disk (6) in raised position on the border of the chamber (3); for this reason an annular slot (8) exists between the annular crown (6a) and the body (2) of the burner, through which external air can flow inside the chamber (3).
  • the crown (6a) is traditionally provided with shallower radial notches (6d) alternated with the notches (6b).
  • the peculiarity of the burner (1) is represented by the cap (7) with a lower border (7a) situated near the crown (6a) immediately above the section from which the mixture comes out and goes through the notches (6b and 6d) of the crown, which is provided with an external annular groove (9) along the edge of the upper border and is fed by the air-gas mixture that goes through the shallower notches (6d).
  • the flame (F) has a considerably ascending direction, so that the impact angle with the bottom of the pot is by far closer to the optimal value.
  • the thermal efficiency is increased by 1.5% -2% compared to burners of known type.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Baking, Grill, Roasting (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)

Abstract

The present invention refers to a model of gas cooker burner of improved type, which features a cap with a lower border situated near the notched crown of the border immediately above the section from which the mixture comes out and goes through the notches of the crown, which is provided with an external annular groove along the edge of the upper border.

Description

  • The present patent application for industrial invention refers to a model of gas cooker burner of improved type, which has been designed to modify the direction of the flames on the bottom of the pot, in the attempt to improve the thermal efficiency of the cooker.
  • To better understand and appreciate the advantages of the invention, reference is made to the structural geometrical configuration of current burners, of which the model of the invention is an evolution capable of optimising the direction of the flames on the bottom of the pot.
  • Gas cooker burners basically comprise a lower hollow body, on which a disk with a large annular crown is centred and positioned. The crown features a dense series of radial notches and is covered by a circular plate, known as "cap".
  • The body is configured as a chamber and features a central hole on the bottom wall for the injector nozzle. The gas comes out of the hole with vertical direction after going through a short horizontal conduit located on the lower section of the body, where the gas feed pipe is inserted.
  • The disk with annular crown has a large central hole provided with a collar that surrounds the injector nozzle.
  • The disk with annular crown is also provided with peripheral feet used to centre and place the disk in raised position on the border of the chamber.
  • This means that an annular slot exists between the annular crown and the body of the burner. External air can flow inside the chamber through the annular slot, because of the depression created by Venturi effect by the gas that rises through the collar and spreads inside the cap, until it exits through the annular crown with radial direction. The notches of the annular crown become output nozzles when they are bordered by the cap.
  • As it is known, when the gas cooker is turned on, a small combustion flame is created in each nozzle from which the air-gas mixture flows.
  • Today the flame is stabilised by having the cap protruding by a few millimetres (normally two to four millimetres) from the notched crown.
  • Gas cooker burners of this type are described in EP0797048 and EP 0903538 patents wherein the lower border of the cap is situated immediately above the section from which the flame flows.
  • The first section of each flame is therefore dominated by the protruding border of the cap, which prevents the flame from rising and imposes a centrifugal horizontal trajectory on the flame, which gradually tends to assume an ascending direction after passing beyond the border of the cap.
  • In other words, it can be said that in the current models of burners the flames coming out of the notched crown lick the bottom of the pot with centrifugal direction and very small impact angle, thus considerably impairing the thermal efficiency of the burner, since the maximum efficiency value is measured when the flame reaches the bottom of the pot with perpendicular direction. The purpose of the present invention is to solve this drawback, by providing a solution that can favour the immediate rising of the flames from the notched crown and guarantee the stability of the flames.
  • The model of burner of the invention uses a cap having the same external diameter of the crown, which is provided with an external annular groove along the edge of the upper border.
  • In other words, it can be said that the border of the cap is flush with the sections of each nozzle of the burner, which, for the first time, communicate by means of the annular groove, where the speed of the air-gas mixture is lower than the speed measured in the deeper notches of the crown, resulting in the stabilisation of the flame coming out of the notches.
  • For major clarity the description of the invention continues with reference to the enclosed drawings, which are intended for purpose of illustration only and not in a limiting sense, whereby:
    • Fig. 1 is a side view of the model of burner of the invention, partially sectioned with a vertical diametral plane that passes through the axis of the conduit that supplies gas to the injector.
    • Fig. 2 is a cross-section with a diametral plane of the cap and the notched crown used by the burner of the invention;
    • Fig. 3 is an enlarged view of a detail of Fig. 2 with the addition of a flame. With reference to the aforementioned figures, the model of burner (1) of the
    invention comprises a hollow body (2) with an internal chamber (3), whose bottom wall features a central hole for the injector nozzle (4), where gas arrives from the conduit (5) externally located on the body (2) and provided with threaded opening (5a) used to insert the gas feed pipe.
  • The burner (1) is also provided with a disk (6) with a large annular crown (6a) with a dense series of deep radial notches (6b) covered by a circular cap (7).
  • The disk (6) is also provided with peripheral feet (6c) used to centre and place the disk (6) in raised position on the border of the chamber (3); for this reason an annular slot (8) exists between the annular crown (6a) and the body (2) of the burner, through which external air can flow inside the chamber (3).
  • The crown (6a) is traditionally provided with shallower radial notches (6d) alternated with the notches (6b).
  • The peculiarity of the burner (1) is represented by the cap (7) with a lower border (7a) situated near the crown (6a) immediately above the section from which the mixture comes out and goes through the notches (6b and 6d) of the crown, which is provided with an external annular groove (9) along the edge of the upper border and is fed by the air-gas mixture that goes through the shallower notches (6d).
  • Finally, attention is drawn on the fact that the border (7a) is situated immediately before the groove (9) and transmits the flame to the deeper notches (6b) of the crown.
  • Measurements have shown that the speed of the air-gas mixture in the groove (9) is lower than the speed in the deeper notches (6b) of the crown (6a), resulting in the stabilisation of the flame (F) coming out of the notches (6b).
  • As shown in Fig. 3, after coming out from the crown (6a), the flame (F) has a considerably ascending direction, so that the impact angle with the bottom of the pot is by far closer to the optimal value. As a matter of fact, in the burner of the invention the thermal efficiency is increased by 1.5% -2% compared to burners of known type.

Claims (1)

  1. Gas cooker burner of the type comprising a hollow body (2) with a internal chamber (3), whose bottom wall features a gas injector (4), with a disk (6) with a large annular crown (6a) centered and positioned in raised position on a border of the internal chamber (3) said annular crown (6a) being, provided with a dense series of deep radial notches (6b) alternated with shallower radial notches (6d) and covered by a circular cap (7) with a protruding border (7a) which is situated near the annular crown (6a) immediately above a section (S) from which an air-gas mixture comes out and goes through the notches (6b and 6d), the burner is characterised in that said annular crown (6a) features an external annular groove (9) along the edge of a upper border of the annular crown (6a) and is fed by the air-gas mixture that goes through the shallower radial notches (6d).
EP04726733A 2003-04-18 2004-04-09 Gas cooker burner of improved type Expired - Lifetime EP1616132B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000016A ITPS20030016A1 (en) 2003-04-18 2003-04-18 BURNER FOR GAS STOVES, OF THE PERFECT TYPE.
PCT/IT2004/000197 WO2004092655A1 (en) 2003-04-18 2004-04-09 Gas cooker burner of improved type

Publications (2)

Publication Number Publication Date
EP1616132A1 EP1616132A1 (en) 2006-01-18
EP1616132B1 true EP1616132B1 (en) 2011-06-08

Family

ID=33187392

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04726733A Expired - Lifetime EP1616132B1 (en) 2003-04-18 2004-04-09 Gas cooker burner of improved type

Country Status (11)

Country Link
US (1) US20070059654A1 (en)
EP (1) EP1616132B1 (en)
CN (1) CN1774599A (en)
AT (1) ATE512337T1 (en)
BR (1) BRPI0405219B1 (en)
EG (1) EG23739A (en)
IT (1) ITPS20030016A1 (en)
RU (1) RU2331817C2 (en)
UA (1) UA85675C2 (en)
WO (1) WO2004092655A1 (en)
YU (1) YU108804A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7594812B2 (en) * 2005-01-17 2009-09-29 SO. M. I Press - Societa′ Metalli Iniettati, SpA Double burner for gas cookers, of the type provided with multiple concentric flame crowns
ES2389998T3 (en) 2008-03-25 2012-11-05 Electrolux Home Products Corporation N.V. Cooking hob with improved gas burner
ITVE20080070A1 (en) * 2008-09-08 2010-03-09 Defendi Italy Srl GAS BURNER FOR COOKING APPLIANCES.
JP5393369B2 (en) * 2008-10-23 2014-01-22 リンナイ株式会社 Stove burner
KR101535300B1 (en) * 2008-12-15 2015-07-08 엘지전자 주식회사 A top-burner and cooker comprising the same
US8596259B2 (en) * 2009-01-13 2013-12-03 Electrolux Home Products, Inc. High efficiency burner
ES2614653T3 (en) * 2009-03-19 2017-06-01 Electrolux Home Products Corporation N.V. Gas burner
FR2951808B1 (en) * 2009-10-22 2011-11-18 Gdf Suez RADIANT BURNER WITH INCREASED YIELD, AND METHOD FOR IMPROVING THE YIELD OF A RADIANT BURNER
CN201582887U (en) * 2009-11-23 2010-09-15 惠而浦产品研发（深圳）有限公司 Burner cap and cooking range
ES2433104T3 (en) * 2010-06-23 2013-12-09 Electrolux Home Products Corporation N.V. Gas stove
PT2655966T (en) * 2010-12-22 2018-05-21 Sabaf Spa Gas burner
FR3029272B1 (en) * 2014-11-27 2021-12-17 La Cornue GAS COOKING APPLIANCE, ESPECIALLY A GAS OVEN
EP3173697B1 (en) 2015-11-26 2021-03-31 Electrolux Appliances Aktiebolag Gas burner and hob comprising a gas burner
EP3587923B1 (en) * 2018-06-25 2021-11-10 Electrolux Appliances Aktiebolag Gas burner assembly
EP3748230B1 (en) * 2019-06-03 2024-03-20 Electrolux Appliances Aktiebolag Gas burner assembly
CN114076308A (en) * 2020-08-20 2022-02-22 宁波方太厨具有限公司 Upper air inlet burner

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5112218A (en) * 1991-09-13 1992-05-12 Robertshaw Controls Company Burner construction, igniter assembly therefor and methods of making the same
DE4203668A1 (en) * 1992-02-08 1993-08-12 Elektro Gas Armaturen GAS BURNER
US5328357A (en) * 1992-11-16 1994-07-12 Robertshaw Controls Company Burner construction and method of making the same
SI0797048T1 (en) * 1996-03-19 1999-12-31 Sabaf S.P.A. Gas burner for kitchen appliances
US6067978A (en) * 1997-08-07 2000-05-30 Schlosser; Erich J. Outdoor cooking apparatus with improved auxiliary gas burner
EP0903538A1 (en) * 1997-09-23 1999-03-24 SABAF S.p.A. Gas burner
ITVE20010043A1 (en) * 2001-10-24 2003-04-24 Ohg Defendi S R L GAS BURNER WITH SEVERAL FLAME SECTORS
ITAN20020026A1 (en) * 2002-06-11 2003-12-11 Somi Press Soc Metalli Iniettati Spa CROWN FOR GAS BURNERS FOR KITCHEN STOVES
FR2845461A1 (en) * 2002-10-04 2004-04-09 Sourdillon Sa GAS BURNER

Also Published As

Publication number Publication date
RU2005135852A (en) 2006-03-20
EG23739A (en) 2007-07-25
EP1616132A1 (en) 2006-01-18
UA85675C2 (en) 2009-02-25
WO2004092655A1 (en) 2004-10-28
RU2331817C2 (en) 2008-08-20
ITPS20030016A1 (en) 2004-10-19
ATE512337T1 (en) 2011-06-15
BRPI0405219A (en) 2005-03-01
YU108804A (en) 2006-08-17
BRPI0405219B1 (en) 2014-07-08
CN1774599A (en) 2006-05-17
US20070059654A1 (en) 2007-03-15

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