[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

EP3126737A1 - Pre-mixed gas burner cooled by an air-gas mixture - Google Patents

Pre-mixed gas burner cooled by an air-gas mixture

Info

Publication number
EP3126737A1
EP3126737A1 EP15718080.3A EP15718080A EP3126737A1 EP 3126737 A1 EP3126737 A1 EP 3126737A1 EP 15718080 A EP15718080 A EP 15718080A EP 3126737 A1 EP3126737 A1 EP 3126737A1
Authority
EP
European Patent Office
Prior art keywords
burner
burner head
air
gas mixture
holes
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
EP15718080.3A
Other languages
German (de)
French (fr)
Other versions
EP3126737B1 (en
Inventor
Alessandro MAROCCOLO
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.)
Ferroli SpA
Original Assignee
Ferroli 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 Ferroli SpA filed Critical Ferroli SpA
Priority to PL15718080T priority Critical patent/PL3126737T3/en
Publication of EP3126737A1 publication Critical patent/EP3126737A1/en
Application granted granted Critical
Publication of EP3126737B1 publication Critical patent/EP3126737B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • F23D14/12—Radiant burners
    • F23D14/14—Radiant burners using screens or perforated plates
    • F23D14/145—Radiant burners using screens or perforated plates combustion being stabilised at a screen or a perforated plate
    • 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
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F23D2203/1017—Flame diffusing means characterised by surface shape curved
    • 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
    • F23D2900/00003—Fuel or fuel-air mixtures flow distribution devices upstream of the outlet

Definitions

  • the present invention relates to a pre-mixed gas burner cooled by an air- gas mixture.
  • a pre-mixed gas burner operates to produce a flame for generating heat by a controlled burning of a comburent air-fuel gas mixture.
  • a typical use application of a pre-mixed gas burner is a use in thermal generators for producing heat.
  • Such a burner is arranged in a combustion chamber upstream of a heat exchanger or directly in a heat exchanger.
  • High temperature fumes generated by the burner head flame are caused to flow through the heat exchanger and their heat is transferred to a heat conveyor fluid circulating in the exchanger.
  • the pre-mixed gas burners conventionally comprise a gaseous fuel and comburent air mixture feeding and mixing system, an air-gas mixture conveying system and a flame generating head having an outer surface thereon a flame is generated.
  • the burner head is heavily heated by the generated flame, in particular in a minimum power mode of operation, as the outlet speed of the air-gas mixture from the burner head is low and the flame is formed nearer to the burner surface.
  • the high temperature of the burner head besides limiting the burner head lifetime, requires to adopt insulating and/or refractory materials to protect the outer parts of the burner, not affected by the burner flame, and of the conveying system therethrough said air-gas mixture flows.
  • the aim of the present invention is to provide such a pre-mixed gas burner specifically designed for overcoming the above mentioned drawbacks of prior art burners.
  • a main object of the invention is to provide such a burner which is very simple construction wise and which, moreover, has a construction cost much lower than that of corresponding prior burners.
  • Another object of the present invention is to provide such a burner adapted to operate in a broad power modulating range, with a minimum power-maximum power ratio higher than 1 :10.
  • Yet another object of the present invention is to provide such a burner which does not require a use of insulating and refractory materials.
  • Yet another object of the present invention is to provide such a burner which, owing to its specifically designed structural features, is very reliable and safe in operation.
  • an air and fuel or combustible gas mixture flows through the conveyor element and, as it arrives, through the distributing element, at the head of the burner, a burner flame is accordingly formed on an outer surface thereof.
  • the distributing element comprises a plurality of different throughgoing holes allowing an increased air-gas mixture amount to flow to the burner head regions devoid of holes and flame, thereby allowing said regions to be cooled; said conveyor element being furthermore thermally protected by the distributing element and the air-gas mixture flow.
  • Figure 1 is a cross-sectioned side elevation view of the burner according to the present invention.
  • Figure 2 is a top plan view of the distributing element
  • Figure 3 is a top plan view of the conveyor.
  • the pre-mixed gas burner according to the present invention which has been generally indicated by the reference number 1 , comprises a conveyor element 2, a burner head 3 and a distributing element 4.
  • the conveyor element 2 operates as a support and holder for the distributing element 4 and the burner head 3.
  • the conveyor element 2 is thermally protected by the distributing element 4 and the air-gas mixture flow, thereby preventing said conveyor element 2 from being overheated.
  • the burner head 3 has a convex shape and such a size as to fully close the combustion chamber 5 therewithin said burner head 3 is arranged.
  • said burner head 3 comprises a throughgoing hole pattern through the central region 6, whereas its outer crown is devoid of throughgoing holes.
  • an air-gas mixture 8 is ejected from the burner head holes, which mixture, directed on the outer surface of said burner head 3, provides a combustion reaction with a corresponding formation of a burning flame 7.
  • the mentioned convex configuration helps to properly mechanically stabilize the burner, while preventing individual flame fronts from overlapping one another, thereby providing a "cleaner" combustion mode of operation.
  • the geometry or pattern of said burner head 3 is, in the embodiment herein shown, a circular one, but said head may have any other desired configurations or patterns such as a square, rectangular, polygonal, elliptical configuration or pattern and so on.
  • the throughgoing hole pattern 6 of said head 3 has been specifically designed to provide a homogeneous flame and an optimum combustion.
  • throughgoing holes of different diameters are herein provided to drive the flame 7 on the burner surface.
  • the burner head 3 hole pattern 6 is, in the embodiment herein illustrated, a circular one, but it would also be possible to provide holes or openings of any other desired geometrical patterns, such as elongated slot, elliptical and rectangular hole patterns.
  • the hole size may be either a constant or an uneven one, and said holes may have an even or uneven geometry, thereby providing spaced regions of larger and smaller hole density and with either a constant or uneven hole pitch pattern.
  • the outermost portion of the head 3, that is the outer crown for a circular burner or a region near an outer perimeter for a polygonal burner, is devoid of holes and accordingly of flames.
  • the distributing element 4 coupled to the burner head 3 by a clamping connection 9 along the head perimeter.
  • the distributing element 4 has a convex shape and comprises a perforated distributing element surface, with uneven dimensions between the outer circular crown 10 and inner region 11 , to allow the air-gas mixture to circulate between the distributing element and the burner head and to be evenly distributed through the outlet holes.
  • the enlarged hole cross-section along said crown or outer perimeter 0 is designed to facilitate an enhanced air-gas mixture conveying and feeding to the peripheral unperforated region of the burner head 3.
  • the above technical solution which represents a main feature of the present invention, allows a portion of the air-gas mixture to circulate between the distributing element 4 and the burner head 3, at said unperforated region.
  • the circulating air-gas mixture before being ejected from said holes and generating the flame will touch the burner head 3 surface at the region of said head 3 devoid of holes and flame, thereby removing heat therefrom and reducing its temperature.
  • the distributing elements further provides a thermal screening function of the underlying conveyor element 2 to protect the latter from the burner head 3 high temperature thereby preventing said conveyor from being overheated.
  • the specifically designed distributing element 4 hole pattern allows said element 4 to be properly cooled, by the same circulating air-gas mixture.
  • the invention has provided a pre-mixed gas burner overcoming the above prior art problems by a very simple safely operating and inexpensive structure, including a cooling system driven by the same air-gas mixture flowing through the burner, thereby greatly reducing the burner head flameless region temperature.
  • This enhanced cooling in combination with a burner head so designed as to tightly close the head combustion chamber, achieves in particular the object of avoiding any insulating refractory materials.
  • the burner according to the present invention can also operate with an air-gas mixture low outlet speed, and a flame very close to the burner head surface, thereby reducing the operating burner minimum power, while enhancing the power modulation range to a ratio higher than 1 :10.
  • the different diameter burner head holes provide an optimum and homogeneous combustion through an "extended" power range of the inventive burner.
  • the convex shape and the clamping of burner head and distributing element provide the burner with an improved mechanical stability and lifetime, and a very simple burner construction.
  • the used materials, as well as the contingent size and shapes can be any, depending on requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)

Abstract

A pre-mixed gas burner comprises a conveyor element, a burner head and a distributing element arranged between the burner head and conveyor element, in which, during an operation of the burner, through the conveyor element flows an air and fuel gas mixture, which, through the distributing element, arrives at the burner head to form on the burner head outer surface a flame, the distributing element having a plurality of different holes therethrough an enhanced air-gas mixture amount flows to the burner head regions without holes and flame, to provide an improved burner head cooling, the conveyor element being moreover thermally screened by the distributing element and the air-gas mixture flow.

Description

PRE-MIXED GAS BURNER COOLED BY AN AIR-GAS MIXTURE
BACKGROUND OF THE INVENTION
The present invention relates to a pre-mixed gas burner cooled by an air- gas mixture.
As is known, a pre-mixed gas burner operates to produce a flame for generating heat by a controlled burning of a comburent air-fuel gas mixture.
A typical use application of a pre-mixed gas burner is a use in thermal generators for producing heat.
Such a burner is arranged in a combustion chamber upstream of a heat exchanger or directly in a heat exchanger.
High temperature fumes generated by the burner head flame are caused to flow through the heat exchanger and their heat is transferred to a heat conveyor fluid circulating in the exchanger.
The pre-mixed gas burners conventionally comprise a gaseous fuel and comburent air mixture feeding and mixing system, an air-gas mixture conveying system and a flame generating head having an outer surface thereon a flame is generated.
During its operation, the burner head is heavily heated by the generated flame, in particular in a minimum power mode of operation, as the outlet speed of the air-gas mixture from the burner head is low and the flame is formed nearer to the burner surface.
In prior use applications, the high temperature of the burner head, besides limiting the burner head lifetime, requires to adopt insulating and/or refractory materials to protect the outer parts of the burner, not affected by the burner flame, and of the conveying system therethrough said air-gas mixture flows.
Such an application of insulating materials, however, is comparatively difficult because of the involved temperatures, and, moreover, the lifetime of said insulating materials is very small because of a continuous exposition to the flame, thereby they represent one of the parts which are quickly deteriorated in existing burners. Moreover, the heat transmitted to the burner parts near the burner head, for example the conveyor, represents a dispersed heat.
The document US 2010/316967 discloses substantially the preamble of claim 1.
SUMMARY OF THE INVENTION
Accordingly, the aim of the present invention is to provide such a pre-mixed gas burner specifically designed for overcoming the above mentioned drawbacks of prior art burners.
Within the scope of the above mentioned aim, a main object of the invention is to provide such a burner which is very simple construction wise and which, moreover, has a construction cost much lower than that of corresponding prior burners.
Another object of the present invention is to provide such a burner adapted to operate in a broad power modulating range, with a minimum power-maximum power ratio higher than 1 :10.
Yet another object of the present invention is to provide such a burner which does not require a use of insulating and refractory materials.
Yet another object of the present invention is to provide such a burner which, owing to its specifically designed structural features, is very reliable and safe in operation.
According to one aspect of the present invention, the above mentioned aim and objects, as well as yet other objects, which will become more apparent hereinafter, are achieved by a pre-mixed gas burner according to claim 1.
During the operation of the subject burner, an air and fuel or combustible gas mixture flows through the conveyor element and, as it arrives, through the distributing element, at the head of the burner, a burner flame is accordingly formed on an outer surface thereof.
The distributing element comprises a plurality of different throughgoing holes allowing an increased air-gas mixture amount to flow to the burner head regions devoid of holes and flame, thereby allowing said regions to be cooled; said conveyor element being furthermore thermally protected by the distributing element and the air-gas mixture flow.
BRIEF DESCRIPTION OF THE DRAWINGS
Further characteristics and advantages of the present invention will become more apparent hereinafter from the following detailed disclosure of a preferred, though not exclusive, embodiment of the invention, which is illustrated, by way of an indicative but not limitative example, in the accompanying drawings, where:
Figure 1 is a cross-sectioned side elevation view of the burner according to the present invention;
Figure 2 is a top plan view of the distributing element; and
Figure 3 is a top plan view of the conveyor.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
With reference to the number references of the above mentioned figures, the pre-mixed gas burner according to the present invention, which has been generally indicated by the reference number 1 , comprises a conveyor element 2, a burner head 3 and a distributing element 4.
Through said conveyor element 2 is conveyed an air-gas flow coming from upstream elements, that is a fan assembly, a gas valve and mixing assembly, which have not been shown in the figures.
The conveyor element 2 operates as a support and holder for the distributing element 4 and the burner head 3.
According to the present invention, the conveyor element 2 is thermally protected by the distributing element 4 and the air-gas mixture flow, thereby preventing said conveyor element 2 from being overheated.
The burner head 3 has a convex shape and such a size as to fully close the combustion chamber 5 therewithin said burner head 3 is arranged.
Moreover, said burner head 3 comprises a throughgoing hole pattern through the central region 6, whereas its outer crown is devoid of throughgoing holes. In the operation of the inventive pre-mixed burner, an air-gas mixture 8 is ejected from the burner head holes, which mixture, directed on the outer surface of said burner head 3, provides a combustion reaction with a corresponding formation of a burning flame 7.
The mentioned convex configuration helps to properly mechanically stabilize the burner, while preventing individual flame fronts from overlapping one another, thereby providing a "cleaner" combustion mode of operation.
As shown, the geometry or pattern of said burner head 3 is, in the embodiment herein shown, a circular one, but said head may have any other desired configurations or patterns such as a square, rectangular, polygonal, elliptical configuration or pattern and so on.
The throughgoing hole pattern 6 of said head 3 has been specifically designed to provide a homogeneous flame and an optimum combustion.
More specifically, throughgoing holes of different diameters are herein provided to drive the flame 7 on the burner surface.
The burner head 3 hole pattern 6 is, in the embodiment herein illustrated, a circular one, but it would also be possible to provide holes or openings of any other desired geometrical patterns, such as elongated slot, elliptical and rectangular hole patterns.
The hole size may be either a constant or an uneven one, and said holes may have an even or uneven geometry, thereby providing spaced regions of larger and smaller hole density and with either a constant or uneven hole pitch pattern.
The outermost portion of the head 3, that is the outer crown for a circular burner or a region near an outer perimeter for a polygonal burner, is devoid of holes and accordingly of flames.
At a given spacing from the burner head 3, and preferably with a like size, is arranged the distributing element 4, coupled to the burner head 3 by a clamping connection 9 along the head perimeter.
The distributing element 4 has a convex shape and comprises a perforated distributing element surface, with uneven dimensions between the outer circular crown 10 and inner region 11 , to allow the air-gas mixture to circulate between the distributing element and the burner head and to be evenly distributed through the outlet holes.
More specifically, the enlarged hole cross-section along said crown or outer perimeter 0 is designed to facilitate an enhanced air-gas mixture conveying and feeding to the peripheral unperforated region of the burner head 3.
The above technical solution, which represents a main feature of the present invention, allows a portion of the air-gas mixture to circulate between the distributing element 4 and the burner head 3, at said unperforated region.
Thus, the circulating air-gas mixture before being ejected from said holes and generating the flame, will touch the burner head 3 surface at the region of said head 3 devoid of holes and flame, thereby removing heat therefrom and reducing its temperature.
The distributing elements further provides a thermal screening function of the underlying conveyor element 2 to protect the latter from the burner head 3 high temperature thereby preventing said conveyor from being overheated.
Moreover, the specifically designed distributing element 4 hole pattern allows said element 4 to be properly cooled, by the same circulating air-gas mixture.
It has been found that the invention fully achieves the intended aim and objects.
In fact, the invention has provided a pre-mixed gas burner overcoming the above prior art problems by a very simple safely operating and inexpensive structure, including a cooling system driven by the same air-gas mixture flowing through the burner, thereby greatly reducing the burner head flameless region temperature.
This enhanced cooling, in combination with a burner head so designed as to tightly close the head combustion chamber, achieves in particular the object of avoiding any insulating refractory materials.
Moreover, owing to the conveyor thermal screening provided by the distributing element, the burner according to the present invention can also operate with an air-gas mixture low outlet speed, and a flame very close to the burner head surface, thereby reducing the operating burner minimum power, while enhancing the power modulation range to a ratio higher than 1 :10.
In addition, the different diameter burner head holes provide an optimum and homogeneous combustion through an "extended" power range of the inventive burner.
Furthermore, the convex shape and the clamping of burner head and distributing element provide the burner with an improved mechanical stability and lifetime, and a very simple burner construction.
In practicing the invention, the used materials, as well as the contingent size and shapes, can be any, depending on requirements.

Claims

1. A pre-mixed gas burner, comprising a conveyor element, a burner head and a distributing element, arranged between said burner head and conveyor element, characterized in that said distributing element comprises a plurality of holes along its crown or outer perimeter having an enlarged cross section, thereby facilitating a feeding of the air-gas mixture to a peripheral region, where the burner head is free of holes, thereby causing a portion of said air-gas mixture to circulate between the distributing element and burner head; said air-gas mixture, in such a circulation, before exiting the outlet holes and generating a flame, touching a burner head surface at a region thereof free of flame, thereby removing heat and limiting a temperature; said distributing element providing a thermal shielding of the underlying conveyor element thereby protecting said underlying conveyor element from a high temperature of the burner head and preventing said underlying conveyor element from being overheated; the distributing element holes properly cooling the latter by a same air-gas mixture circulation.
2. A burner, according to claim 1 , characterized in that said distributing element comprises a plurality of different holes allowing an enlarged air-gas mixture amount to flow therethrough, at the burner head regions free of holes and flame, thereby providing a cooling of said burner head regions.
3. A burner, according to claim 1 , characterized in that said conveyor element supports and houses said distributing element and burner head; said conveyor element being thermally protected by the distributing element and an air-gas mixture flow thereby preventing said conveyor element from being overheated.
4. A burner, according to claim 1 , characterized in that said burner head has a convex shape and such a size as to fully close a combustion chamber in which said burner head is arranged.
5. A burner, according to one or more of the preceding claims, characterized in that said burner head comprises in a central area thereof a perforation, whereas an outer crown of said burner head being free of holes.
6. A burner, according to one or more of the preceding claims, characterized in that, in an operation of said burner, said air-gas mixture exits the burner head holes thereby, being triggered on an outer surface of said burner head, said air-gas mixture starts a combustion reaction with a related flame triggering.
7. A burner, according to one or more of the preceding claims, characterized in that said burner head has a convex shape adapted to hold a mechanical stability of said burner while preventing burner individual flame fronts from overlapping onto one another, to provide operation conditions for a cleaner combustion.
8. A burner, according to one or more of the preceding claims, characterized in that said burner head comprises different diameter holes to drive the burner flame on the burner surface.
9. A burner, according to one or more of the preceding claims, characterized in that said burner head comprises an outermost part free of holes and accordingly of a flame.
10. A burner, according to one or more of the preceding claims, characterized in that said distributing element has a size equal to a size of the burner head and being coupled to said burner head by clamping along a whole burner head perimeter.
11. A burner, according to one or more of the preceding claims, characterized in that said distributing element has a convex shape and comprises a distributing element perforated surface having a different size between an outer circular crown and an inner region thereof, thereby allowing the air-gas mixture to circulate between the distributing element and the burner head to be evenly distributed or delivered to outlet holes.
EP15718080.3A 2014-04-04 2015-03-31 Pre-mixed gas burner cooled by an air-gas mixture Active EP3126737B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15718080T PL3126737T3 (en) 2014-04-04 2015-03-31 Pre-mixed gas burner cooled by an air-gas mixture

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20140612 2014-04-04
PCT/IB2015/000431 WO2015150902A1 (en) 2014-04-04 2015-03-31 Pre-mixed gas burner cooled by an air-gas mixture

Publications (2)

Publication Number Publication Date
EP3126737A1 true EP3126737A1 (en) 2017-02-08
EP3126737B1 EP3126737B1 (en) 2019-11-13

Family

ID=50897751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15718080.3A Active EP3126737B1 (en) 2014-04-04 2015-03-31 Pre-mixed gas burner cooled by an air-gas mixture

Country Status (5)

Country Link
EP (1) EP3126737B1 (en)
ES (1) ES2769814T3 (en)
PL (1) PL3126737T3 (en)
RU (1) RU2664267C2 (en)
WO (1) WO2015150902A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111623348A (en) * 2020-07-07 2020-09-04 深圳市佳运通电子有限公司 Porous ceramic combustion head for low-nitrogen combustor
IT202100016196A1 (en) 2021-06-21 2022-12-21 Ferroli Spa COMBUSTION CELL FOR A HEATING SYSTEM
IT202200014521A1 (en) 2022-07-11 2024-01-11 Ferroli Spa COMBUSTION CELL FOR A HEATING SYSTEM

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH371237A (en) * 1957-10-24 1963-08-15 Pozzi Arnaldo Gas burner with a radiator
US3852025A (en) * 1973-09-28 1974-12-03 Int Magna Corp Infra-red heater
DK0598083T3 (en) * 1992-06-13 1996-08-12 Viessmann Werke Kg Radiator burner for boiler
US5355841A (en) * 1993-08-27 1994-10-18 Sabh (U.S.) Water Heater Group, Inc. Water heater with integral burner
ITPD20070363A1 (en) 2007-11-06 2009-05-07 Sit La Precisa Spa BURNER, IN PARTICULAR GAS BURNER WITH PRE-MIXING

Also Published As

Publication number Publication date
EP3126737B1 (en) 2019-11-13
WO2015150902A1 (en) 2015-10-08
PL3126737T3 (en) 2020-06-01
RU2016135504A3 (en) 2018-07-04
ES2769814T3 (en) 2020-06-29
RU2016135504A (en) 2018-05-07
RU2664267C2 (en) 2018-08-15

Similar Documents

Publication Publication Date Title
JP2013502552A (en) Radiant burner
JP5566305B2 (en) Open loop gas burner
US9885476B2 (en) Surface combustion gas burner
KR101840296B1 (en) Portable gas stove
KR20220124744A (en) Gas burners and heating appliances
EP3126737B1 (en) Pre-mixed gas burner cooled by an air-gas mixture
JPH0246843B2 (en)
US20120003595A1 (en) High turn down low nox burner
JP2008267806A (en) Gas cooking stove
US20170023245A1 (en) Dual ring burner ovni
WO2012069970A1 (en) High-stability burner
KR100420002B1 (en) premixed metal fiber burner
JP5268971B2 (en) Stove burner and stove
EP3531797B1 (en) Infrared radiant heater
US20140345591A1 (en) Flame gas burner diffuser for cooking equipments
JP2018008076A (en) Continuous rice cooker
JP3850823B2 (en) Liquid heating device
JP2009074703A (en) Heater
NL2024623B1 (en) Gas burner and heating appliance
KR102292819B1 (en) Burner for gas boiler
JP4095539B2 (en) Long surface combustion burner
JP2005274024A (en) Gas range
KR20240100001A (en) Burner and water heating apparatus comprising the same
KR100687847B1 (en) A gas burner flame generator
PT109048A (en) BURNER DEVICE

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20160805

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20190619

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1202039

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191115

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602015041591

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: RO

Ref legal event code: EPE

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200313

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200213

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200213

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200214

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200313

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2769814

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20200629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602015041591

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 1202039

Country of ref document: AT

Kind code of ref document: T

Effective date: 20191113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20200814

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20191113

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230317

P02 Opt-out of the competence of the unified patent court (upc) changed

Effective date: 20230428

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240326

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: RO

Payment date: 20240319

Year of fee payment: 10

Ref country code: DE

Payment date: 20240229

Year of fee payment: 10

Ref country code: GB

Payment date: 20240319

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20240312

Year of fee payment: 10

Ref country code: PL

Payment date: 20240320

Year of fee payment: 10

Ref country code: IT

Payment date: 20240328

Year of fee payment: 10

Ref country code: FR

Payment date: 20240327

Year of fee payment: 10

Ref country code: BE

Payment date: 20240229

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20240412

Year of fee payment: 10