EP2751486B1 - Burner assembly for cooking equipments - Google Patents

Burner assembly for cooking equipments Download PDF

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Publication number
EP2751486B1
EP2751486B1 EP12765981.1A EP12765981A EP2751486B1 EP 2751486 B1 EP2751486 B1 EP 2751486B1 EP 12765981 A EP12765981 A EP 12765981A EP 2751486 B1 EP2751486 B1 EP 2751486B1
Authority
EP
European Patent Office
Prior art keywords
porticos
burner assembly
base
air
fuel
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.)
Not-in-force
Application number
EP12765981.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2751486A1 (en
Inventor
Marcos Raphael da SILVA
Rodrigo Freguilia de FÁVERI
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.)
Whirlpool SA
Original Assignee
Whirlpool SA
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 Whirlpool SA filed Critical Whirlpool SA
Publication of EP2751486A1 publication Critical patent/EP2751486A1/en
Application granted granted Critical
Publication of EP2751486B1 publication Critical patent/EP2751486B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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
    • F23D14/02—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
    • F23D14/065—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 with injector axis inclined 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
    • F23D14/02—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
    • F23D14/08—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 axial 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
    • F23D14/02—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
    • F23D14/08—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 axial outlets at the burner head
    • F23D14/085—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 axial outlets at the burner head with injector axis inclined 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
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
    • F23D2900/14—Special features of gas burners
    • F23D2900/14062—Special features of gas burners for cooking ranges having multiple flame rings

Definitions

  • the present invention relates to a burner assembly for cooking equipments, and more specifically to a burner provided with a spreading cover having two or more portico rings to output air-fuel mixture, which was developed to provide significant improvement in thermal efficiency and heat power of the equipment, in addition to presenting smooth geometry (both in the base and in the spreading cover) providing greater easiness of cleaning by the user, and which can also provide a simpler and more economical constructive process than similar known ones.
  • the burners are components of stoves that are located close to the cooking table and comprise the elements responsible for receiving the fuel from the supply source (whether it a cylinder of liquefied petroleum gas or a public network of natural gas), mix it to ambient air and release the fuel-air mixture to burn, when requested by the user.
  • the supply source whether it a cylinder of liquefied petroleum gas or a public network of natural gas
  • the burners are usually constituted by devices called bodies (or bases, as they are also called) having internal cavities which, when closed by spreading covers constitute chambers in which occurs the expansion of the mixture of air and fuel from the supply source.
  • bodies or bases, as they are also called
  • spreading covers constitute chambers in which occurs the expansion of the mixture of air and fuel from the supply source.
  • Such a mixture is delivered to perimeter region of the spreaders, and through openings known as porticos, the fuel-air mixture can flow out of the internal chamber and be safely burned in the outer face of the porticos.
  • the present invention differs from existing constructions for presenting more than one flame output ring.
  • there is often only one of flame output ring which limits the thermal efficiency of the burner since it does not allow the distribution of the flames under the entire surface of the cooking utensil.
  • burners such as those disclosed in documents CN 2229610 and CN 2835816 , allow the generation of two rings of flames through a crown-shaped construction, wherein each ring internally defines a mixing chamber containing porticos (or outlet orifices for the fuel-air mixture) in its integrated upper surface, which may possibly be coated by a lid (as shown for example in document CN 2835816 ).
  • this type of burner provides a significantly complex constructive aspect of rustic appearance which requires that for each flame output ring, there is an independent mixing chamber.
  • Analogous construction which also results in two rings of flames, can be observed in the burner disclosed by the document CN 2911448 that, despite a more conservative visual aspect and more proximal to the conventional, also includes an individual mixing chamber under each spreading cover provided with porticos for output of air-fuel mixture.
  • This configuration shows a burner of construction and complex mounting and therefore costly that, moreover, also requires the manufacture and mounting of two individual covers of fittings at specific locations of the piece.
  • the present state of the art lacks a burner assembly for cooking equipments that enables the generation of more than one ring of porticos of output of air-fuel mixture without, therefore, requiring the construction of several spreading covers and which, moreover, preferably has a single mixing chamber and having smooth geometry (both in the base and in the spreading cover and in the porticos) providing greater easiness of cleaning by the user.
  • Another objective among the objectives of the present invention is to reveal a burner assembly whose manufacturing process and installation is simple and therefore not very expensive.
  • the present invention achieves the above objectives by means of a burner assembly according to claim 1
  • said base comprises in its inner region at least one supply orifice.
  • the spreading cover comprises at least one perimeter ring cooperating with the base and at least one disc cooperating with the perimeter ring.
  • a preferred embodiment of the invention also provides that the burner assembly preferably comprises a single internal mixing chamber cooperating with the porticos of the spreading cover.
  • the burner assembly comprises means for providing at least two flame rings from at least two rings of porticos existing in a spreading cover.
  • the perimeter ring and the disc of the spreading cover comprises sinuous perimeters which constitute the rings of the porticos of the assembly.
  • the porticos of the spreader can have any shape or a combination of shapes in one same ring of porticos or between the existing rings.
  • the porticos of the spreader have an elliptical shape wherein, however, any geometric configuration may alternatively be used - in a preferential manner, smooth geometries capable of providing easiness of cleaning for the user.
  • the internal surface of the spreader may comprise at least one projection for engagement with existing slot(s) on the base, aiming the correct mounting by the end user, and wherein an optional construction may provide alternative positioning of the elements with coupling projection on the base and slots of the spreader.
  • the invention may comprise any other system capable of assisting the user in the correct assembly of the spreader on the base without thereby escaping from the desired scope of protection.
  • the base of the burner may be provided with a system of feed of any fuel-air mixture into the internal chamber of expansion of air-fuel mixture, in order to guarantee the supply of adequate amount of mixture to the combustion of gas that feeds the flame of the equipment.
  • such air supply system for the internal chamber of expansion comprises a fan or a blower.
  • FIG. 1 shows a general view of burner assembly constructed according to a preferred embodiment of the present invention allowing visualization of the base 2 which, in general, rests on the cooking table M which may also have lower prolongations (not shown) for connection to the internal components for interconnection with the supply source of gas and air.
  • the base 2 has a substantially frustoconical format comprising, in its internal region, a central orifice 22 for the coupling of system for feeding air-fuel mixture (not shown).
  • a spreading cover 3 - better shown in figure 2 - is, in the exemplary embodiment shown in the appended figures, consisting of a perimeter ring 31 to the center from which it couples a disc 32 with perimeter surface preferably angled and central region 33 preferably flat.
  • the perimeter ring 31 of the spreading cover 3 has perimeter 34 preferably sinuous and having side walls 35 of substantially frustoconical conformation provided with transverse ribs 36 to provide better accommodation of the piece on the base 2, resulting in a first ring of substantially elliptical porticos by which exits the air-fuel mixture responsible for feeding the flame employed during the procedures of heating and / or cooking.
  • the disc 32 also has a sinuous perimeter 37 and transverse ribs 38 for accommodating the piece of the frustoconical ring 31 when the perimeter 37 defines a ring of additional porticos, and increase the exit area of air fuel - and therefore of flame - also resulting in the increase of heat power of the burner assembly.
  • the spreader cover 3 may consist by any number of the pieces or slots resulting in the addition of multiple rings of porticos, that may result in several configurations of spreading covers 3, thereby promoting a better distribution of the flame under the cooking utensil and thus a significant improvement in thermal efficiency of the equipment.
  • the mounting of pieces creates, inside the burner assembly 1, an internal chamber 4 in which the fuel-air mixture from the feeding system (not shown) expands and feeds the flames existing on the outer faces of the porticos.
  • each group of output porticos has an individual mixture chamber; however, the present invention is distinguished from the others in that it comprises a single internal chamber 4 in which the air-fuel mixture is supplied to all the porticos of the assembly 1, which turns out to standardize the characteristics of resulting flames.
  • burner assembly object of the present application can also optionally be provided with multiple mixture chambers.
  • the present invention can optionally be constructed with additional elements to provide an improved mixture between gas and environment air.
  • the burner assembly 1 may be provided with a feeding system - preferably forced can, however, also use known systems such as those using the Venturi effect - air for expansion internal chamber 4 of air fuel, which may comprise a fan, a blower or any other device capable of achieving the same purpose.
  • a mechanized system of air supply to the mixture is capable of achieving conditions of complete pre-mixture (or any fraction of lack / excess of air) with which the combustion is more efficient and the economy of gas will be even greater.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP12765981.1A 2011-09-02 2012-08-28 Burner assembly for cooking equipments Not-in-force EP2751486B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRPI1104482-9A BRPI1104482A2 (pt) 2011-09-02 2011-09-02 conjunto queimador para equipamentos de cocÇço
PCT/BR2012/000319 WO2013029138A1 (en) 2011-09-02 2012-08-28 Burner assembly for cooking equipments

Publications (2)

Publication Number Publication Date
EP2751486A1 EP2751486A1 (en) 2014-07-09
EP2751486B1 true EP2751486B1 (en) 2016-02-10

Family

ID=46934351

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12765981.1A Not-in-force EP2751486B1 (en) 2011-09-02 2012-08-28 Burner assembly for cooking equipments

Country Status (5)

Country Link
US (1) US20140318527A1 (pt)
EP (1) EP2751486B1 (pt)
BR (1) BRPI1104482A2 (pt)
MX (1) MX338811B (pt)
WO (1) WO2013029138A1 (pt)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2986913B1 (en) * 2013-04-17 2019-02-27 SABAF S.p.A. Gas burner for cooking hobs
USD787041S1 (en) 2015-09-17 2017-05-16 Whirlpool Corporation Gas burner
US10837651B2 (en) 2015-09-24 2020-11-17 Whirlpool Corporation Oven cavity connector for operating power accessory trays for cooking appliance
ES2875035T3 (es) * 2015-11-26 2021-11-08 Electrolux Appliances AB Quemador de gas y placa que comprende un quemador de gas
US11777190B2 (en) 2015-12-29 2023-10-03 Whirlpool Corporation Appliance including an antenna using a portion of appliance as a ground plane
US10145568B2 (en) 2016-06-27 2018-12-04 Whirlpool Corporation High efficiency high power inner flame burner
US10627113B2 (en) 2016-12-29 2020-04-21 Whirlpool Corporation Distributed vertical flame burner
US10551056B2 (en) 2017-02-23 2020-02-04 Whirlpool Corporation Burner base
US10451290B2 (en) 2017-03-07 2019-10-22 Whirlpool Corporation Forced convection steam assembly
US10660162B2 (en) 2017-03-16 2020-05-19 Whirlpool Corporation Power delivery system for an induction cooktop with multi-output inverters
US10627116B2 (en) 2018-06-26 2020-04-21 Whirlpool Corporation Ventilation system for cooking appliance
US10619862B2 (en) 2018-06-28 2020-04-14 Whirlpool Corporation Frontal cooling towers for a ventilation system of a cooking appliance
US10837652B2 (en) 2018-07-18 2020-11-17 Whirlpool Corporation Appliance secondary door
US20200032997A1 (en) * 2018-07-25 2020-01-30 Haier Us Appliance Solutions, Inc. Gas burner with a compact injet

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3592180A (en) * 1969-05-05 1971-07-13 Inst Gas Technology Gas burner device
CN2229610Y (zh) 1995-08-10 1996-06-19 陈淑婉 炉头外环辅助燃烧槽
IT1318126B1 (it) 2000-07-06 2003-07-23 Sabaf Spa Bruciatore con separatore interno
NZ505833A (en) * 2000-07-19 2002-12-20 Fisher & Paykel Appliances Ltd A spiral involute gas burner housing with reconfigurable jet mounted below burner assembly
DE102004043268B3 (de) * 2004-09-04 2005-12-01 Schott Ag Flächiger atmosphärischer Gasbrenner
CN2835816Y (zh) 2005-12-06 2006-11-08 李静师 一种高效环保节能燃烧器
CN2911448Y (zh) 2006-05-08 2007-06-13 湖南迅达集团有限公司 整体式双火头燃烧盘
WO2010092410A2 (en) * 2009-02-10 2010-08-19 Notas, George Electronic control system for energy efficient fireplace
CN103703316B (zh) * 2010-12-14 2016-01-13 Bsh家用电器有限公司 用于双回路燃烧器的燃气阀单元
GR1007692B (el) * 2010-12-16 2012-09-18 Λαζαριδης Δ. Γεωργιος & Σια Εβεε, Καυστηρας καυσιμου αεριου

Also Published As

Publication number Publication date
WO2013029138A8 (en) 2014-04-10
WO2013029138A1 (en) 2013-03-07
BRPI1104482A2 (pt) 2013-08-13
EP2751486A1 (en) 2014-07-09
MX338811B (es) 2016-04-29
MX2014002456A (es) 2014-04-10
US20140318527A1 (en) 2014-10-30

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