EP4194752B1 - Hellstrahler - Google Patents

Hellstrahler Download PDF

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Publication number
EP4194752B1
EP4194752B1 EP21213687.3A EP21213687A EP4194752B1 EP 4194752 B1 EP4194752 B1 EP 4194752B1 EP 21213687 A EP21213687 A EP 21213687A EP 4194752 B1 EP4194752 B1 EP 4194752B1
Authority
EP
European Patent Office
Prior art keywords
combustion air
light radiator
supply
radiator according
exhaust gas
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
EP21213687.3A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4194752A1 (de
EP4194752C0 (de
Inventor
Edgar Kreis
Alexander GENZEL
Torsten Stohler
Thomas Renner
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.)
Schwank GmbH
Original Assignee
Schwank GmbH
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
Priority to PL21213687.3T priority Critical patent/PL4194752T4/pl
Application filed by Schwank GmbH filed Critical Schwank GmbH
Priority to EP21213687.3A priority patent/EP4194752B1/de
Priority to RS20240438A priority patent/RS65407B1/sr
Priority to ES21213687T priority patent/ES2974977T3/es
Priority to HRP20240439TT priority patent/HRP20240439T1/hr
Priority to HUE21213687A priority patent/HUE066089T2/hu
Priority to DE112022003634.6T priority patent/DE112022003634A5/de
Priority to CA3219585A priority patent/CA3219585A1/en
Priority to PCT/EP2022/084658 priority patent/WO2023104827A1/de
Priority to US18/566,174 priority patent/US20240280259A1/en
Priority to CN202280030726.2A priority patent/CN117242299A/zh
Priority to JP2023572176A priority patent/JP2024544808A/ja
Priority to KR1020247000008A priority patent/KR20240118056A/ko
Publication of EP4194752A1 publication Critical patent/EP4194752A1/de
Application granted granted Critical
Publication of EP4194752C0 publication Critical patent/EP4194752C0/de
Publication of EP4194752B1 publication Critical patent/EP4194752B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F23D14/12—Radiant burners
    • F23D14/151—Radiant burners with radiation intensifying means other than screens or perforated plates
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • 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
    • F23D14/46—Details
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • 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
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air supply
    • F23N1/022—Regulating fuel supply conjointly with air supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/10—Premixing fluegas with fuel and combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/50—Control of recirculation rate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/9901—Combustion process using hydrogen, hydrogen peroxide water or brown gas as fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/005—Radiant burner heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2229/00—Flame sensors
    • F23N2229/20—Camera viewing

Definitions

  • the invention relates to a bright radiator, with a burner, a fan and a radiant plate serving as a radiation surface and provided with flame passage channels, the burner being connected to a fuel gas supply, the fan being set up to supply combustion air to the burner, the burner being set up to cause a flat glow of the radiant plate.
  • infrared heaters are often used to heat production and storage facilities. These generate infrared radiation, which is used to generate heat.
  • infrared heaters over conventional heating systems is that they emit their heat with almost no loss. On the other hand, drafts that occur in conventional combustion systems are avoided.
  • Infrared heaters are divided into light and dark heaters. While in dark radiators the heat is generated by combustion of a fuel gas-air mixture in a closed tube, in which the surface of the pipe heated by the hot gases generated gives off the heat predominantly as radiation, in bright radiators a fuel gas-air mixture is used on the surface of one or more of these arranged ceramic radiant panels burned. Either natural gas or liquid gas (propane gas or biogas) is used as fuel.
  • the name bright radiator is based on the visible combustion of the fuel gas and air mixture on the ceramic radiant plate, which causes it to glow.
  • the ceramic radiant plate has flame passage channels arranged parallel to one another with, often conical, recesses on the radiation side.
  • the modern bright spotlights have proven themselves in practice and have relatively low pollutant emissions while at the same time being highly efficient.
  • the present invention is based on the object of providing a bright radiator whose pollutant emissions are further reduced while maintaining at least the same level of efficiency. According to the invention, this object is achieved by the features of the characterizing part of patent claim 1.
  • the invention provides a bright radiator which has at least the same level of efficiency compared to the prior art and in which pollutant emissions are reduced. Because the fuel gas supply is preferably connected exclusively to a hydrogen source, the exhaust gas theoretically does not contain any carbon-containing pollutants such as carbon monoxide, carbon dioxide or hydrocarbons, since hydrogen does not contain any carbon.
  • the hydrogen supply and the blower are designed and aligned in such a way that the hydrogen flow and combustion air flow are set at an angle to one another, the angle preferably being less than or equal to 90 degrees and greater than or equal to 45 degrees. This ensures good mixing of hydrogen and combustion air.
  • a reflector is arranged which surrounds the radiation surface of the radiant plate and which delimits an exhaust gas space, with a combustion air mixing space being arranged upstream of the burner, which is connected to a combustion air source and the exhaust gas space.
  • the exhaust gas space is connected to the combustion air mixing space via an ejector, the driving medium of the ejector being combustion air introduced by the fan and the medium sucked into the combustion air mixing space being exhaust gas located in the exhaust gas space.
  • An adjusting device is preferably arranged, via which the ratio of the combustion air volume flow to the sucked-in exhaust gas volume flow of the ejector can be adjusted.
  • the combustion air mixing chamber is arranged within the blower. This ensures good mixing of combustion air and exhaust gas.
  • the hydrogen supply is guided over a surface area via a distributor plate which is arranged parallel to the jet plate and which delimits a fuel mixing chamber.
  • a distributor plate which is arranged parallel to the jet plate and which delimits a fuel mixing chamber.
  • the fuel gas supply can also be connected to a hydrogen-combustion air mixture source, with the hydrogen concentration in the mixture being supplied above the upper explosion limit, which is why the hydrogen-combustion air mixture is not ignitable. In this way, only a very low oxygen content is required in the combustion air introduced into the mixing chamber.
  • a supply air duct which encompasses the distribution plate at least in some areas and is connected to the blower is arranged.
  • the supply air duct is preferably designed in such a way that a flat flow of combustion air over the distributor plate is achieved. This results in uniform mixing with the hydrogen flowing through the distributor plate.
  • an optical sensor is arranged which is set up to detect at least one parameter of the flame generated by the burner.
  • the sensor is advantageously a UV sensor. This achieves flame detection of the invisible hydrogen flame.
  • the optical sensor is aligned with the radiant plate, preferably at an obtuse angle. This achieves reliable flame detection.
  • a reflector is arranged which surrounds the radiant plate at least in some areas and is provided with a window, the optical sensor being aligned from outside the reflector through the window onto the radiant plate. This achieves flame detection in a position of the sensor that is protected from heat.
  • the optical sensor is connected to an adjusting device connected to the blower for interrupting and/or adjusting the combustion air supply.
  • the optical sensor is preferably connected to an adjusting device connected to the fuel gas supply for interrupting and/or adjusting the hydrogen supply. This influences the combustion air-hydrogen mixture or even a The hydrogen supply can be switched off depending on the flame status.
  • the adjusting device is connected to a control and regulation module which is programmed to regulate the flame properties based on stored target parameters by changing the quantities of hydrogen and/or combustion air.
  • the bright spotlight chosen as an exemplary embodiment according to Figure 1 comprises a burner 1, which is connected to a hydrogen supply 2 and a fan 3.
  • a reflector 4 is arranged to encompass the burner 1.
  • the burner 1 includes a fuel mixing chamber 11, which is delimited by a ceramic radiant plate 12.
  • the ceramic radiant plate 12 is provided in a known manner with a hole pattern extending over the entire surface, which is formed from cylindrical flame passage channels which are designed to widen conically on the outward-facing side of the radiant plate 12.
  • a hydrogen supply 2 is arranged orthogonally thereto, which opens into the fuel mixing chamber 11. Opens at right angles to the hydrogen supply 2 a pressure line 31 in the fuel mixing chamber 11, which is connected to the blower 3.
  • the blower 3 is connected on its suction side to an ejector 32, the drive connection of which is connected to a combustion air supply 33 and the suction connection of which is connected to an exhaust gas supply line 34, which is passed through the reflector.
  • a recirculation aperture 35 is arranged in the exhaust gas supply line 34.
  • the combustion air flow sucked in by the fan 3 through the combustion air supply 33 serves here as a driving medium, through which part of the exhaust gas cushion 381 located within the reflector 4 is sucked in through the recirculation aperture 35.
  • the proportion of the exhaust gas flow in the combustion air flow can be adjusted through the recirculation aperture 35, which in turn determines the oxygen content of the exhaust gas-combustion air flow mixture.
  • the remaining exhaust gas stream flows out of the reflector 4 into the ambient air.
  • a combustion air mixing chamber 39 is integrated into the blower 3.
  • the fuel mixing chamber 11 is supplied with an exhaust gas-combustion air mixture by the fan 3, which is ignited with the hydrogen stream introduced through the hydrogen supply 2 after exiting through the radiant plate 12 by an ignition electrode 13 arranged on the burner 1 outside in front of the radiant plate 12, whereby a flame carpet is created on the outside of the radiant plate 12.
  • the combustion essentially takes place in the conically widened sections of the flame passage channels of the radiant plate 12, whereby the latter is heated to a bright red glow on its outer surface.
  • the flame temperature can be regulated by the oxygen content of the exhaust gas-combustion air flow mixture, which can be set via the recirculation aperture 35.
  • the burner 1 is designed in accordance with the previous exemplary embodiment and is in turn surrounded by a reflector 4.
  • a hydrogen supply 2 is arranged orthogonally thereto, which opens into the fuel mixing chamber 11.
  • a pressure line 31 opens into the mixing chamber, which is connected to the blower 3.
  • the blower 3 is connected on the suction side to a combustion air supply, an ejector 36 being inserted in the pressure line 31 within the reflector 4, through which a suction gap 37 radially spanning the pressure line 31 is formed.
  • the section of the pressure line 31 adjoining the ejector 36 forms the combustion air mixing chamber 37.
  • a sensor receptacle 41 which has a window 42, is inserted into the reflector 4.
  • a UV sensor 43 is inserted into the sensor receptacle and is connected via an electrical line 44 to an adjusting device (not shown) for interrupting the hydrogen supply.
  • the UV sensor 43 is aligned at an angle of 45° to the radiation plate 12. If no flame is detected by the UV sensor 43, the hydrogen supply is interrupted by the adjusting device.
  • the actuating device or a control and regulation module connected to it can also be additionally connected to the ignition electrode 13 and set up in such a way that in the event that no flame is detected, the ignition electrode 13 is first activated and only after a further absence of a flame is an interruption the hydrogen supply takes place.
  • a burner 5 is arranged, which in turn is connected to a fan 3.
  • the burner 5 includes a fuel mixing chamber 51, which is delimited by a ceramic radiant plate 52.
  • a hydrogen supply 2 is arranged orthogonally thereto, which opens into the fuel mixing chamber 51.
  • a distributor plate 53 is arranged parallel to the jet plate 52.
  • the distribution plate 53 is provided over its surface with a hole pattern formed from cylindrical bushings.
  • the hydrogen supply 2 is connected to the distributor plate 53 via a hood-shaped section 21, so that hydrogen flows through the distributor plate 53 over a flat area.
  • the fuel mixing chamber 51 is arranged surrounding a supply air duct 54, the nozzles 55 of which are aligned in an imaginary plane parallel to the distributor plate 53.
  • the supply air duct 54 is connected to the fan 3, through which it is fed.
  • the blower 3 is connected on its suction side in accordance with the first exemplary embodiment to an ejector 32, the drive connection of which is connected to a combustion air supply 33 and the suction connection of which is connected to an exhaust gas supply line 34, which is passed through the reflector 4.
  • a recirculation aperture 35 is arranged in the exhaust gas supply line 34.
  • the combustion air sucked in by the fan 3 through the combustion air supply 33 serves here again as a propellant medium, through which part of the exhaust gas cushion 381 located within the reflector 4 is sucked in through the recirculation aperture 35.
  • the proportion of the exhaust gas flow in the combustion air flow can also be adjusted here through the recirculation aperture 35, which in turn determines the oxygen content of the exhaust gas-combustion air flow mixture.
  • the remaining exhaust gas stream flows out of the reflector 4 into the ambient air.
  • the combustion air mixing chamber 39 is integrated into the blower 3.
  • an exhaust gas-combustion air mixture is supplied to the fuel mixing chamber 51 by the fan 3 via the supply air duct 54, which reaches the distributor plate 53 flows over the surface and mixes with the hydrogen flowing through the distributor plate 53 before it is ignited by an ignition electrode 13 arranged in the fuel mixing chamber 51.
  • the hot combustion exhaust gas flows through the channels of the radiant plate 52 and is thus brought to the required temperature.
  • the distributor plate 53 Due to the flat exhaust gas-combustion air mixture flow generated by the supply air duct 54 above the distributor plate 53, the distributor plate 53 is cooled, whereby a flashback through the distributor plate 53 is prevented.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
  • Control Of Combustion (AREA)
EP21213687.3A 2021-12-10 2021-12-10 Hellstrahler Active EP4194752B1 (de)

Priority Applications (13)

Application Number Priority Date Filing Date Title
EP21213687.3A EP4194752B1 (de) 2021-12-10 2021-12-10 Hellstrahler
RS20240438A RS65407B1 (sr) 2021-12-10 2021-12-10 Emiter svetlosti
ES21213687T ES2974977T3 (es) 2021-12-10 2021-12-10 Radiador luminoso
HRP20240439TT HRP20240439T1 (hr) 2021-12-10 2021-12-10 Svjetlosni radijator
HUE21213687A HUE066089T2 (hu) 2021-12-10 2021-12-10 Fénysugárzó
PL21213687.3T PL4194752T4 (pl) 2021-12-10 2021-12-10 Promiennik jasny
CA3219585A CA3219585A1 (en) 2021-12-10 2022-12-06 Bright radiator
PCT/EP2022/084658 WO2023104827A1 (de) 2021-12-10 2022-12-06 Hellstrahler
DE112022003634.6T DE112022003634A5 (de) 2021-12-10 2022-12-06 Hellstrahler
US18/566,174 US20240280259A1 (en) 2021-12-10 2022-12-06 Bright radiator
CN202280030726.2A CN117242299A (zh) 2021-12-10 2022-12-06 亮式辐射器
JP2023572176A JP2024544808A (ja) 2021-12-10 2022-12-06 ブライトラジエータ
KR1020247000008A KR20240118056A (ko) 2021-12-10 2022-12-06 브라이트 라디에이터

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21213687.3A EP4194752B1 (de) 2021-12-10 2021-12-10 Hellstrahler

Publications (3)

Publication Number Publication Date
EP4194752A1 EP4194752A1 (de) 2023-06-14
EP4194752C0 EP4194752C0 (de) 2024-01-31
EP4194752B1 true EP4194752B1 (de) 2024-01-31

Family

ID=78829441

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21213687.3A Active EP4194752B1 (de) 2021-12-10 2021-12-10 Hellstrahler

Country Status (13)

Country Link
US (1) US20240280259A1 (pl)
EP (1) EP4194752B1 (pl)
JP (1) JP2024544808A (pl)
KR (1) KR20240118056A (pl)
CN (1) CN117242299A (pl)
CA (1) CA3219585A1 (pl)
DE (1) DE112022003634A5 (pl)
ES (1) ES2974977T3 (pl)
HR (1) HRP20240439T1 (pl)
HU (1) HUE066089T2 (pl)
PL (1) PL4194752T4 (pl)
RS (1) RS65407B1 (pl)
WO (1) WO2023104827A1 (pl)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457954B1 (de) * 1990-05-25 1994-05-25 Schwank GmbH Strahlungsbrenner
AT402574B (de) * 1994-09-26 1997-06-25 Vaillant Gmbh Heizeinrichtung
JP3488634B2 (ja) * 1998-06-26 2004-01-19 岩谷産業株式会社 水素表面燃焼バーナ
DE102005027698A1 (de) * 2005-06-15 2006-12-21 Daimlerchrysler Ag Porenbrenner mit einer Flammensperre
KR100784948B1 (ko) * 2006-03-30 2007-12-11 어코드 주식회사 수소버너 및 그 화염감지방법
US8197249B1 (en) * 2006-04-28 2012-06-12 The United States Of America, As Represented By The Administrator Of The National Aeronautics And Space Administration Fully premixed low emission, high pressure multi-fuel burner
EP2014980A1 (de) 2007-07-13 2009-01-14 Schwank GmbH Keramische Brennerplatte
DE102014019766A1 (de) 2014-05-05 2018-08-09 Schwank Gmbh Infrarotstrahler
US20170051913A1 (en) * 2015-08-18 2017-02-23 Clearsign Combustion Corporation Combustion system with a perforated flame holder and an external flue gas recirculation apparatus
FR3045783B1 (fr) * 2015-12-17 2019-08-16 Fives Stein Module de controle electronique et procede de controle du fonctionnement et de la securite d'au moins un bruleur a tube radiant
CN107314371A (zh) * 2016-04-26 2017-11-03 克利尔赛恩燃烧公司 用于包括有孔火焰保持器的燃烧器的燃料喷嘴组件
WO2018160869A1 (en) * 2017-03-02 2018-09-07 Clearsign Combustion Corporation Fuel nozzle with augmented fuel/air mixing
US20210356126A1 (en) * 2020-05-15 2021-11-18 Zeeco, Inc. Burner flame stabilization method and system
GB2595499A (en) * 2020-05-28 2021-12-01 Bosch Thermotechnology Ltd Uk Method for operating a failure protection device of a flame sensor
JP2022029134A (ja) * 2020-08-04 2022-02-17 アズビル株式会社 診断支援装置および診断方法

Also Published As

Publication number Publication date
EP4194752A1 (de) 2023-06-14
CA3219585A1 (en) 2023-06-15
PL4194752T3 (pl) 2024-07-29
EP4194752C0 (de) 2024-01-31
DE112022003634A5 (de) 2024-05-16
PL4194752T4 (pl) 2024-07-29
ES2974977T3 (es) 2024-07-02
HRP20240439T1 (hr) 2024-08-16
KR20240118056A (ko) 2024-08-02
JP2024544808A (ja) 2024-12-05
WO2023104827A1 (de) 2023-06-15
RS65407B1 (sr) 2024-05-31
HUE066089T2 (hu) 2024-07-28
CN117242299A (zh) 2023-12-15
US20240280259A1 (en) 2024-08-22

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