EP4375571B1 - Brenner mit integriertem mischer - Google Patents

Brenner mit integriertem mischer

Info

Publication number
EP4375571B1
EP4375571B1 EP23207646.3A EP23207646A EP4375571B1 EP 4375571 B1 EP4375571 B1 EP 4375571B1 EP 23207646 A EP23207646 A EP 23207646A EP 4375571 B1 EP4375571 B1 EP 4375571B1
Authority
EP
European Patent Office
Prior art keywords
burner
tube
fuel
venturi
blower
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.)
Active
Application number
EP23207646.3A
Other languages
English (en)
French (fr)
Other versions
EP4375571A3 (de
EP4375571A2 (de
Inventor
Michael J. O'donnell
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.)
Beckett Thermal Solutions
Original Assignee
Beckett Thermal Solutions
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 Beckett Thermal Solutions filed Critical Beckett Thermal Solutions
Publication of EP4375571A2 publication Critical patent/EP4375571A2/de
Publication of EP4375571A3 publication Critical patent/EP4375571A3/de
Application granted granted Critical
Publication of EP4375571B1 publication Critical patent/EP4375571B1/de
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
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes
    • 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
    • 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
    • F23D14/34—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air
    • F23D14/36—Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air in which the compressor and burner form a single unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/48—Nozzles
    • F23D14/58—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details
    • F23D14/62—Mixing devices; Mixing tubes
    • F23D14/64—Mixing devices; Mixing tubes with injectors
    • 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
    • F23D2203/1012—Flame diffusing means characterised by surface shape tubular

Definitions

  • the invention relates to a fuel burner and, in particular, relates to a burner for a heating appliance in which the mixing system is downstream of the blower.
  • pre-mixed burners use a negative regulation gas valve attached to an inlet of a blower supplying the air for the pre-mixed mixture.
  • the gas is pulled into the blower wheel, where it is mixed with incoming air and delivered to the burner.
  • the connection of the blower to the burner should also be sealed.
  • EP 4 359 700 A1 which is prior art in the sense of Article 54(3) EPC, discloses a burner comprising: a tube extending along a centerline from an inlet end to an outlet end and having radially extending openings along its length; a cap closing the outlet end in a fluid-tight manner; and a mixing system extending into the inlet end for delivering a pre-mixed mixture of air and fuel to the interior of the tube, wherein the fuel in the mixing system flows radially outward relative to the centerline through openings for mixing with air flowing axially into the tube and into contact with the radially flowing fuel.
  • a burner for an appliance having a blower comprises: a tube extending along a centerline from an inlet end to an outlet end and having radially extending openings along its length; a cap closing the outlet end in a fluid-tight manner; and a mixing system downstream from the blower and including a fuel nozzle extending into the inlet end for delivering a pre-mixed mixture of air and fuel to the interior of the tube for ignition by an igniter, the fuel nozzle including a wall defining a longitudinal passage terminating at a closed end with openings extending radially from the longitudinal passage and through the wall such that the fuel in the mixing system flows radially outward through the openings relative to the centerline while being prevented from flowing out of the nozzle along the centerline for mixing with air (A) from the blower flowing axially into the tube and into contact with the radially flowing fuel.
  • a burner for an appliance having a blower in another embodiment not covered by the current invention, includes an inner tube extending along a centerline from a first end to a second end and defining a central passage. Openings extend radially through the inner tube to the central passage.
  • An outer tube extends along a centerline from a first end to a second end and defines a central passage for receiving the inner tube. Openings extend radially through the outer tube to the central passage thereof.
  • An end cap closes the second ends in a fluid-tight manner.
  • a mixing system extends into the first end of the inner tube and includes a venturi having a central passage in fluid communication with the central passage of the tube.
  • a gas supply tube has a first end for receiving fuel and a second end extending into the venturi.
  • a fuel nozzle extends into the second end of the gas supply tube and includes radially extending openings for delivering the fuel to the central passage of the venturi. Air from the blower is received in a radial space between the venturi and the fuel nozzle such that the air is mixed with the fuel flowing through the radial openings in the fuel nozzle and delivered as a mixture of air and fuel to the central passage of the inner tube.
  • the invention relates to a fuel burner and, in particular, relates to a burner for a heating appliance in which the mixing system is downstream of the blower.
  • the appliance can be, for example, a furnace, water heater, heat exchanger, etc.
  • Fig. 1 illustrates an existing arrangement having a burner 200 fluidly connected to an inducer blower 202 and a negative regulator valve 204.
  • the negative regulator valve 204 is positioned upstream of the blower 202.
  • the blower 202 is positioned upstream of the burner 200 and connected thereto through a sealed discharge outlet 208.
  • the blower 202 is actuated to draw in air A, which creates a negative pressure at the blower, causing the negative regulator valve 204 to open and allow gas G to be drawn into the blower.
  • the air A and gas G is then mixed within the blower 202 and delivered by a sealed discharge outlet 208 to the burner 200 to be ignited.
  • Fig. 2 illustrates an example combustor or burner 10 in accordance with an embodiment of the invention.
  • the burner 10 is positioned downstream of a blower 12 and fuel source 14.
  • the blower 12 is configured to supply air A to the burner 10.
  • the fuel source 14 is configured to supply fuel F, e.g., gas, to the burner 10. Consequently, the inlet of the burner 10 is fluidly connected to both the blower 12 and the fuel source 14.
  • a mixing system 16 is provided at the inlet of the burner 10 for mixing the air A and fuel G from the respective blower 12 and fuel source 14 and delivering a pre-mixed mixture M of the air and gas to the burner to be ignited by an igniter 18 to produce flames F.
  • the burner 10 includes an inner tube 20 extending along a centerline 22 from a first or inlet end 24 to a second or outlet end 26.
  • the cross-section of the inner tube 20 can be round, circular, or the like.
  • the inner tube 20 includes an inner surface 30 defining a central passage 32 and an outer surface 34 generally concentric with the inner surface 30.
  • the inner tube 20 can be made from a durable material, such as metal.
  • the inner tube 20 can be constructed as a flame arrester or include a flame-arresting inner liner therein (indicated in phantom at 40) covering the entire or substantially the entire inner surface 30.
  • Openings 38 extend radially through the inner tube 20 from the outer surface 34 to the inner surface 30.
  • the openings 38 can be ports, slots, louvers, etc. formed in/through the inner tube 20.
  • the openings 38 can be arranged in a predefined pattern around the inner tube 20. To this end, the openings 38 can be arranged in rows along the length of the inner tube 20, with each row collectively encircling the centerline 22.
  • the openings 38 in each row can be symmetrically (as shown) or asymmetrically (not shown) circumferentially arranged about the centerline 22.
  • the burner 10 further includes an outer tube 50 extending along a centerline 52 from a first or inlet end 54 to a second or outlet end 56.
  • the cross-section of the outer tube 50 can be round, circular, or the like.
  • the outer tube 50 includes an inner surface 58 defining a central passage 60 and an outer surface 62 generally concentric with the inner surface 58.
  • the outer tube 50 can be made from a durable material, such as metal.
  • Openings 63 extend radially through the outer tube 50 from the outer surface 62 to the inner surface 58.
  • the openings 63 can be ports, slots, louvers, etc. formed in/through the outer tube 50.
  • the openings 63 can be arranged in a predefined pattern around the outer tube 50. To this end, the openings 63 can be arranged in rows along the length of the outer tube 50, with each row collectively encircling the centerline 52.
  • the openings 63 in each row can be symmetrically (as shown) or asymmetrically (not shown) circumferentially arranged about the centerline 52.
  • the openings 63 in the outer tube 50 can be aligned with or offset from the openings 38 in the inner tube 20.
  • a fiber mesh 68 can optionally be provided over the exterior of the outer tube 50.
  • the outer tube 50 extends over the inner tube 20 with the centerlines 22, 52 aligned.
  • the tubes 20, 50 are sized such that a radial gap or space 64 exists between the outer surface 34 of the inner tube 20 and inner surface 58 of the outer tube 50.
  • An end cap 70 extends into and is secured to the second ends 26, 56 of the tubes 20, 50 to fix the ends relative to one another and prevent fluid from passing out of the burner 10 through the second ends of the tubes. In other words, the end cap 70 has a fluid-tight interface with the second ends 26, 56 of the tubes 20, 50.
  • the inner tube 20 can be omitted (not shown), in which case the end cap 70 is secured to the end 56 of the tube 50 in a fluid-tight manner.
  • the mixing system 16 extends into the first ends 24, 54 of the tubes 20, 50 and includes a mounting flange 80 secured to the first ends of the tubes to fix the ends relative to one another.
  • the mounting flange 80 includes an annular base 82 that abuts the axial extents of the first ends 24, 54.
  • a wall 84 extends from the base 82 and into the central passages 32, 60 of the tubes 20, 50.
  • the wall 84 includes a stepped portion 90 and a curved, e.g., converging, portion 92.
  • the curved portion 92 is concave or frustoconical.
  • the stepped portion 90 extends from the base 82.
  • the curved portion 92 extends from the stepped portion 90.
  • the portions 90, 92 collectively define a passage 94 through the mounting flange 80.
  • a venturi 100 is positioned within the passage 94 and can include a downstream, diverging portion 102 and an upstream, converging portion 104 (as viewed in a direction extending towards the second ends 26, 56).
  • the diverging portion 102 can be straight (not shown).
  • the converging portion 104 extends along and mirrors the contour of the curved portion 92 of the mounting flange 80.
  • the diverging portion 102 extends out of the passage 94 and upstream into the central passage 32 of the inner tube 20 towards the second end 26 thereof.
  • the venturi 100 defines a longitudinally extending passage 106 extending the entire length thereof and in fluid communication with both the central passage 32 of the inner tube 20 and the passage 94 of the mounting flange 80.
  • a gas supply tube 112 and fuel nozzle 120 extend through the first ends 24, 54 of the tubes 20, 50 and into the passage 106 of the venturi 100. As shown, the gas supply tube 112 has an end that is upstream of the tubes 20, 50 while the fuel nozzle 120 is positioned entirely within the tubes.
  • the gas supply tube 112 defines a passage 114.
  • the tube 112 can have a downstream end 116 that is flared (as shown) or straight (not shown).
  • the fuel nozzle 120 is positioned within the flared end 116.
  • the fuel nozzle 120 includes a wall 122 defining a longitudinal passage 124 terminating at a closed end 126.
  • One or more openings 128 extend radially from the passage 124 through the wall 122. In one example, multiple openings 128 are symmetrically arranged about the circumference of the fuel nozzle 120. In any case, the openings 128 are longitudinally positioned within the curved portions 92, 104 upstream of the diverging portion 102 of the venturi 100. In other words, the openings 128 are neither upstream nor downstream of the diverging portion 102. Other longitudinal positions are contemplated.
  • fuel e.g., gas
  • G fuel, e.g., gas
  • the fuel G flows through the passage 114, into the fuel nozzle 120, and exits the fuel nozzle through the radial openings 128 and into the interior of the venturi 100.
  • air A from the blower 12 is injected into the first ends 24, 54 of the tubes 20, 50 between the gas supply tube 112/fuel nozzle 120 and the wall 84 of the mounting flange 80.
  • the openings 128 are positioned in the lowest pressure zone of the venturi 100.
  • the curved portion 94 tapers inwards in a direction heading downstream, i.e., toward the end cap 70, the curved portion 94 acts as a venturi to reduce the fluid pressure therein.
  • flaring the end 116 of the tube 112 can help further constrict fluid flow between the curved portion 94 and the end 116 and thereby reduce fluid pressure.
  • the venturi 100 is configured to create fluid pressure that is sufficient to operate a negative regulation gas valve or a conventional positive pressure valve.
  • the openings 128 are sized, shaped, and arranged to provide the desired mixing and distribution characteristics between the fuel G and air A.
  • the incoming air A mixes with the fuel G exiting the openings 128 and is delivered as a pre-mixed mixture M out of the diverging portion 102 and into the central passage 32 of the inner tube 20.
  • the pre-mixed mixture M can then pass radially through the openings 28, 63 to the exterior of the burner 10 where the igniter 18 ignites the pre-mixed mixture to produce flames F ( see also Fig. 2 ).
  • the burner 10 can include flame proving means, such as a sensor (not shown), to monitor operation of the burner.
  • a controller 150 can be connected to the blower 12, fuel source 14, igniter 18, and flame proving sensor for monitoring and control thereof.
  • the inner tube 20 When the inner tube 20 is configured as a flame arrestor, it can help prevent/mitigate flashback if the flame F travels radially inwards through the outer tube 50. Furthermore, the liner 40 may impede radially inward movement of the flame F sufficient to allow the controller 150 to shut the system down in response to a flame no longer being sensed at the flame sensor.
  • the present invention is advantageous in that it alleviates the need to seal multiple sections/components of the blower because the blower no longer mixes the air and fuel. Furthermore, the mixing is done at/within the inlet of the burner - as opposed to within the blower - and, thus, large quantities of the combustible fuel/air mixture are not kept at any time in the blower and/or outlet from the blower to the burner. This is especially advantageous when highly volatile gases, such as hydrogen, are used in the burner.

Landscapes

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

Claims (9)

  1. Brenner (10) für eine Vorrichtung mit einem Gebläse (12), umfassend:
    ein Rohr (20; 50), das sich entlang einer Mittellinie (22; 52) von einem Einlassende (24; 54) zu einem Auslassende (26; 56) erstreckt und sich radial erstreckende Öffnungen (38; 63) entlang seiner Länge aufweist;
    eine Kappe (70), die das Auslassende (26; 56) fluiddicht verschließt; und
    ein Mischsystem (16) stromabwärts von dem Gebläse (12) und beinhaltend eine Brennstoffdüse (120), die sich in das Einlassende (24; 54) erstreckt, um ein vorgemischtes Gemisch aus Luft (A) und Brennstoff (G) in das Innere des Rohrs (20; 50) zur Zündung durch einen Zünder (18) zu liefern, wobei die Brennstoffdüse (120) eine Wand (122) beinhaltet, die einen Längsdurchgang (124) definiert, der an einem geschlossenen Ende (126) mit Öffnungen (128) endet, die sich radial von dem Längsdurchgang (124) und durch die Wand (122) erstrecken, sodass der Brennstoff (G) in dem Mischsystem (16) radial nach außen durch die Öffnungen (128) relativ zu der Mittellinie (22; 52) strömt, während verhindert wird, dass er entlang der Mittellinie (22; 52) aus der Düse (120) strömt, um sich mit Luft (A) von dem Gebläse (12), die axial in das Rohr (20; 50) strömt, und in einen Kontakt mit dem radial strömenden Brennstoff (G) zu mischen.
  2. Brenner (10) nach Anspruch 1, wobei das Mischsystem (16) Folgendes umfasst:
    ein röhrenförmiges Venturi-Rohr (100) mit einem stromaufwärtigen Ende und einem stromabwärtigen Ende (116); und
    ein Gaszufuhrrohr (112), das sich in das stromaufwärtige Ende erstreckt und Brennstoff aufnimmt;
    wobei die Brennstoffdüse (120) in dem Gasrohr (20; 50) positioniert ist, um in Längsrichtung an dem stromaufwärtigen Ende des Venturi-Rohrs (100) ausgerichtet zu sein, wobei Luft (A) von dem Gebläse (12) in einem radialen Raum zwischen dem Venturi-Rohr (100) und der Brennstoffdüse (120) aufgenommen wird, sodass die Luft (A) mit dem Brennstoff (G) gemischt wird, der radial nach außen durch die radialen Öffnungen (128) in der Brennstoffdüse (120) strömt, und als ein Gemisch (M) aus Luft (A) und Brennstoff (G) zu dem zentralen Durchgang (32; 60) des Rohrs (20; 50) geliefert wird.
  3. Brenner (10) nach Anspruch 2, wobei ein Ende des Gaszufuhrrohrs (112), das die Brennstoffdüse (120) aufnimmt, aufgeweitet ist.
  4. Brenner (10) nach Anspruch 2, wobei das stromaufwärtige Ende des Venturi-Rohrs (100) konvergierend ist und das stromabwärtige Ende (116) des Venturi-Rohrs (100) divergierend ist.
  5. Brenner (10) nach Anspruch 2, wobei das stromaufwärtige Ende des Venturi-Rohrs (100) konvergierend ist und das stromabwärtige Ende (116) des Venturi-Rohrs (100) gerade ist.
  6. Brenner (10) nach Anspruch 2, ferner umfassend einen Montageflansch (80) zum Verbinden des Einlassendes (24; 54) des Rohrs (20; 50) mit dem Venturi-Rohr (100).
  7. Brenner (10) nach Anspruch 6, wobei der Montageflansch (80) Folgendes beinhaltet:
    eine ebene Basis (82);
    einen abgestuften Abschnitt (90), der sich von der Basis (82) in das Einlassende (24; 54) des Rohrs (20; 50) erstreckt; und
    einen gekrümmten Abschnitt (92, 94, 104), der sich über das stromaufwärtige Ende des Venturi-Rohrs (100) erstreckt.
  8. Brenner (10) nach Anspruch 1, ferner umfassend eine Flammensperrauskleidung (40), die einen zentralen Durchgang (32, 60) des Rohrs (20; 50) definiert.
  9. Brenner (10) nach Anspruch 1, ferner umfassend ein Fasergeflecht (68), das über dem Rohr (20; 50) bereitgestellt ist.
EP23207646.3A 2022-11-23 2023-11-03 Brenner mit integriertem mischer Active EP4375571B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US202263384781P 2022-11-23 2022-11-23

Publications (3)

Publication Number Publication Date
EP4375571A2 EP4375571A2 (de) 2024-05-29
EP4375571A3 EP4375571A3 (de) 2024-06-12
EP4375571B1 true EP4375571B1 (de) 2025-12-31

Family

ID=88689377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23207646.3A Active EP4375571B1 (de) 2022-11-23 2023-11-03 Brenner mit integriertem mischer

Country Status (3)

Country Link
US (1) US20240044488A1 (de)
EP (1) EP4375571B1 (de)
CA (1) CA3216520A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4617564A1 (de) * 2024-03-11 2025-09-17 Natalie Pemberger Brenner

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022271805A1 (en) * 2021-06-23 2022-12-29 Zeeco, Inc. Lean pre-mix radiant wall burner apparatus and method

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2077424A (en) * 1932-12-03 1937-04-20 Nat Machine Works Gas burner
US2263170A (en) * 1938-12-07 1941-11-18 Nat Machine Works Gas burner
US3044551A (en) * 1958-12-29 1962-07-17 Phillips Petroleum Co Heater
US3514041A (en) * 1967-04-24 1970-05-26 Denver Fireclay Co Inspirator burner
US5145361A (en) * 1984-12-04 1992-09-08 Combustion Research, Inc. Burner and method for metallurgical heating and melting
US5020596A (en) * 1990-01-24 1991-06-04 Indugas, Inc. Enhanced oil recovery system with a radiant tube heater
EP0612959A1 (de) * 1993-02-23 1994-08-31 D.W. Clysan B.V. Venturi Brenner
FR2794521B1 (fr) * 1999-06-04 2001-07-13 Geminox Bruleur a gaz a ventilation forcee pour chaudiere
ITMO20030154A1 (it) * 2003-05-23 2004-11-24 Worgas Bruciatori Srl Bruciatore modulabile
EP4006417B1 (de) * 2020-11-30 2023-08-16 Beckett Thermal Solutions S.R.L. Brennermembran für einen brenner
IT202100012668A1 (it) * 2021-05-17 2022-11-17 Beckett Thermal Solutions S R L Bruciatore

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022271805A1 (en) * 2021-06-23 2022-12-29 Zeeco, Inc. Lean pre-mix radiant wall burner apparatus and method
EP4359700A1 (de) * 2021-06-23 2024-05-01 Zeeco Inc. Brennervorrichtung mit magerer vormischungsstrahlungswand und verfahren

Also Published As

Publication number Publication date
EP4375571A3 (de) 2024-06-12
US20240044488A1 (en) 2024-02-08
CA3216520A1 (en) 2024-05-23
EP4375571A2 (de) 2024-05-29

Similar Documents

Publication Publication Date Title
RU2450211C2 (ru) Трубчатая камера сгорания с ударным охлаждением
US6438959B1 (en) Combustion cap with integral air diffuser and related method
CN102032594B (zh) 用于燃料喷射器的内部挡板
JP6118024B2 (ja) 燃焼器ノズル及び燃焼器ノズルの製造方法
KR20010024477A (ko) 독립적으로 제어 가능한 서로 다른 스테이지로의 연료유동을 가진 연소기
EP4375571B1 (de) Brenner mit integriertem mischer
US6050809A (en) Immersion tube burner with improved flame stability
RU2511820C2 (ru) Устройство газовой горелки с предварительным смешиванием
US6029647A (en) Recuperative radiant tube with hot side vitiation
EP0612959A1 (de) Venturi Brenner
US6551098B2 (en) Variable firing rate fuel burner
EP4174371A2 (de) Wasserstoffmischsystem
WO2015051226A1 (en) Low nox burner with low pressure drop
EP3645941B1 (de) Brenner mit einem brennkopf mit geringer nox-emission
US5762490A (en) Premixed gas burner orifice
US10955134B2 (en) Burner with variable port area
US11187408B2 (en) Apparatus and method for variable mode mixing of combustion reactants
EP1913306B1 (de) Industriebrenner und verfahren zum betrieb eines industriebrenners
US20260016158A1 (en) Systems and Methods for Gas Combustion
US2759473A (en) Radiant tube gas burner
EP1245901A1 (de) Brenner
CN102414514B (zh) 预混合燃烧器
RU183750U1 (ru) Газовая горелка предварительного смешивания
JP6196883B2 (ja) 火炎伝播管パージ装置及び火炎伝播管をパージする方法
CA2498538C (en) Variable firing rate fuel burner

Legal Events

Date Code Title Description
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: THE APPLICATION HAS BEEN PUBLISHED

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR

AK Designated contracting states

Kind code of ref document: A3

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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR

RIC1 Information provided on ipc code assigned before grant

Ipc: F23D 14/64 20060101ALI20240506BHEP

Ipc: F23D 14/62 20060101ALI20240506BHEP

Ipc: F23D 14/58 20060101ALI20240506BHEP

Ipc: F23D 14/36 20060101ALI20240506BHEP

Ipc: F23D 14/06 20060101ALI20240506BHEP

Ipc: F23D 14/02 20060101AFI20240506BHEP

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: 20241106

RBV Designated contracting states (corrected)

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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR

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

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20250319

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: 20250808

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 ME 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: F10

Free format text: ST27 STATUS EVENT CODE: U-0-0-F10-F00 (AS PROVIDED BY THE NATIONAL OFFICE)

Effective date: 20251231

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602023010377

Country of ref document: DE