US20070059654A1 - Gas cooker burner of improved type - Google Patents

Gas cooker burner of improved type Download PDF

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Publication number
US20070059654A1
US20070059654A1 US10/552,797 US55279704A US2007059654A1 US 20070059654 A1 US20070059654 A1 US 20070059654A1 US 55279704 A US55279704 A US 55279704A US 2007059654 A1 US2007059654 A1 US 2007059654A1
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US
United States
Prior art keywords
crown
border
notches
cap
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.)
Abandoned
Application number
US10/552,797
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.)
Somi Press-Societa' Metalli Iniettati SpA
Original Assignee
Somi Press-Societa' Metalli Iniettati SpA
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 Somi Press-Societa' Metalli Iniettati SpA filed Critical Somi Press-Societa' Metalli Iniettati SpA
Assigned to SO.M.I. PRESS-SOCIETA' METALLI INIETTATI S.P.A. reassignment SO.M.I. PRESS-SOCIETA' METALLI INIETTATI S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARMANNI, PIERO
Publication of US20070059654A1 publication Critical patent/US20070059654A1/en
Abandoned 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 external diameter (d.e.cap) of the cap ( 7 ) is identical to the external diameter (d.e.cor) of the underlying crown ( 6 a ) wherein the section (S) from which the flame flows is flush with the lower border ( 7 a ) of the overlying cap ( 7 ).
  • 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.

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 configuraton 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.
  • The above declared purpose of the invention has thus been achieved since the flames can deviate upwards as soon as they come out from the notched crown it being provided that the border of the cap (7) does not bar anymore their rise, the external diameter of the cap (7) being so small to match the external diameter of the underlying crown, the aforementioned annular groove being provided along the upper corner of said crown.
  • Finally, attention is drawn on the fact that the border (7 a) is situated immediately before the groove (9) and transmits the flame to the deeper notches (6 b) of the crown (6 a). In addition to the synthetic information already provided on page 2, lines 26-29 of the description it is hereby pointed out the main characteristic of the burner according to the invention as shown in FIG. 3 identifying the following reference parameters:
  • d.e.cap.=external diameter of the cap
  • d.e.cor=external diameter of the crown
  • That being stated we reiterate that the external diameter (d.e.cap) of the cap (7) is identical to the external diameter (d.e.cor) of the underlying crown (6 a) wherein the section (S) from which the flame flows is flush with the lower border (7 a) of the overlying cap (7).
  • Measurements have shown that the speed of the air-gas mixture in the groove (9) is lower than the speed in the deeper notches (6 b) of the crown (6 a), resulting in the stabilisation of the flame (F) coming out of the notches (6 b).
  • As shown in FIG. 3, after coming out from the crown (6 a), 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 (2)

1. (canceled)
2. Gas cooker burner of the type comprising a hollow body (2) with internal chamber (3), whose bottom wall features a gas injector (4), with a disk (5) with a large annular crown (6 a) centered and positioned in raised position on the border, provided with a dense series of deep radial notches (6 b) alternated with shallower radial notches (6 d) and covered by a circular cap (7) with protruding border (7 a) which is attached near the crown (6 a) immediately above the section (S) from which the mixture comes out and goes through the notches (6 b and 6 d), burner characterised in that said crown (6 a) features 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 (6 d) and also in that said lower border (7 a) is flush with the underlying section (S) from which the mixture comes out.
US10/552,797 2003-04-18 2004-04-09 Gas cooker burner of improved type Abandoned US20070059654A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000016A ITPS20030016A1 (en) 2003-04-18 2003-04-18 BURNER FOR GAS STOVES, OF THE PERFECT TYPE.
ITPS2003A000016 2003-04-18
PCT/IT2004/000197 WO2004092655A1 (en) 2003-04-18 2004-04-09 Gas cooker burner of improved type

Publications (1)

Publication Number Publication Date
US20070059654A1 true US20070059654A1 (en) 2007-03-15

Family

ID=33187392

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/552,797 Abandoned US20070059654A1 (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)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070141521A1 (en) * 2005-01-17 2007-06-21 Piero Armanni Double burner for gas cookers, of the type provided with multiple concentric flame crowns
US20120152230A1 (en) * 2009-03-19 2012-06-21 Electrolux Home Products Corporation N.V. Gas burner
US20120231398A1 (en) * 2009-10-22 2012-09-13 Gdf Suez Radiating burner having enhanced performance and method for improving the performance of a radiating burner
US20130087137A1 (en) * 2010-06-23 2013-04-11 Electrolux Home Products Corporation N.V. Gas stove
US20140209088A1 (en) * 2010-12-22 2014-07-31 Sabaf S.P.A. Gas burner
US9416963B2 (en) 2008-03-25 2016-08-16 Electrolux Home Products Corporation N.V. Cooking top with improved gas top burner
US10816215B2 (en) * 2009-11-23 2020-10-27 Whirlpool Corporation Diffusion cap burner for gas cooking appliance
US10928061B2 (en) 2015-11-26 2021-02-23 Electrolux Appliances Aktiebolag Gas burner and hob comprising a gas burner
CN114076308A (en) * 2020-08-20 2022-02-22 宁波方太厨具有限公司 Upper air inlet burner
US11493203B2 (en) * 2018-06-25 2022-11-08 Electrolux Appliances Aktiebolag Gas burner assembly and gas cooking appliance comprising at least one gas burner assembly

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR3029272B1 (en) * 2014-11-27 2021-12-17 La Cornue GAS COOKING APPLIANCE, ESPECIALLY A GAS OVEN
EP3748230B1 (en) * 2019-06-03 2024-03-20 Electrolux Appliances Aktiebolag Gas burner assembly

Citations (4)

* 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
US5328357A (en) * 1992-11-16 1994-07-12 Robertshaw Controls Company Burner construction and method of making the same
US5649822A (en) * 1992-02-08 1997-07-22 Elektro-Und Gas-Armaturen-Fabrik Gmbh Gas burner
US6067978A (en) * 1997-08-07 2000-05-30 Schlosser; Erich J. Outdoor cooking apparatus with improved auxiliary gas burner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SI0797048T1 (en) * 1996-03-19 1999-12-31 Sabaf S.P.A. Gas burner for kitchen appliances
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

Patent Citations (4)

* 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
US5649822A (en) * 1992-02-08 1997-07-22 Elektro-Und Gas-Armaturen-Fabrik Gmbh Gas burner
US5328357A (en) * 1992-11-16 1994-07-12 Robertshaw Controls Company Burner construction and method of making the same
US6067978A (en) * 1997-08-07 2000-05-30 Schlosser; Erich J. Outdoor cooking apparatus with improved auxiliary gas burner

Cited By (15)

* 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
US20070141521A1 (en) * 2005-01-17 2007-06-21 Piero Armanni Double burner for gas cookers, of the type provided with multiple concentric flame crowns
US9416963B2 (en) 2008-03-25 2016-08-16 Electrolux Home Products Corporation N.V. Cooking top with improved gas top burner
US9074765B2 (en) * 2009-03-19 2015-07-07 Electrolux Home Products Corporation N. V. Gas burner
US20120152230A1 (en) * 2009-03-19 2012-06-21 Electrolux Home Products Corporation N.V. Gas burner
US20120231398A1 (en) * 2009-10-22 2012-09-13 Gdf Suez Radiating burner having enhanced performance and method for improving the performance of a radiating burner
US9618199B2 (en) * 2009-10-22 2017-04-11 Gdf Suez Radiating burner having enhanced performance and method for improving the performance of a radiating burner
US10816215B2 (en) * 2009-11-23 2020-10-27 Whirlpool Corporation Diffusion cap burner for gas cooking appliance
US20130087137A1 (en) * 2010-06-23 2013-04-11 Electrolux Home Products Corporation N.V. Gas stove
US9593854B2 (en) * 2010-06-23 2017-03-14 Electrolux Home Products Corporation N.V. Gas stove
US20140209088A1 (en) * 2010-12-22 2014-07-31 Sabaf S.P.A. Gas burner
US10247410B2 (en) * 2010-12-22 2019-04-02 Sabaf S.P.A. Gas burner
US10928061B2 (en) 2015-11-26 2021-02-23 Electrolux Appliances Aktiebolag Gas burner and hob comprising a gas burner
US11493203B2 (en) * 2018-06-25 2022-11-08 Electrolux Appliances Aktiebolag Gas burner assembly and gas cooking appliance comprising at least one 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

Also Published As

Publication number Publication date
EP1616132B1 (en) 2011-06-08
YU108804A (en) 2006-08-17
ATE512337T1 (en) 2011-06-15
ITPS20030016A1 (en) 2004-10-19
RU2331817C2 (en) 2008-08-20
RU2005135852A (en) 2006-03-20
BRPI0405219B1 (en) 2014-07-08
BRPI0405219A (en) 2005-03-01
UA85675C2 (en) 2009-02-25
CN1774599A (en) 2006-05-17
WO2004092655A1 (en) 2004-10-28
EP1616132A1 (en) 2006-01-18
EG23739A (en) 2007-07-25

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SO.M.I. PRESS-SOCIETA' METALLI INIETTATI S.P.A., I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ARMANNI, PIERO;REEL/FRAME:017884/0519

Effective date: 20051003

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION