GB2456861A - A Device Comprising a Burner Head and a Method for Operating a Burner - Google Patents

A Device Comprising a Burner Head and a Method for Operating a Burner Download PDF

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Publication number
GB2456861A
GB2456861A GB0822519A GB0822519A GB2456861A GB 2456861 A GB2456861 A GB 2456861A GB 0822519 A GB0822519 A GB 0822519A GB 0822519 A GB0822519 A GB 0822519A GB 2456861 A GB2456861 A GB 2456861A
Authority
GB
United Kingdom
Prior art keywords
burner
matrix surface
temperature sensor
control unit
burner head
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
GB0822519A
Other versions
GB0822519D0 (en
GB2456861B (en
Inventor
Ludolf Guecker
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.)
Viessmann Werke GmbH and Co KG
Original Assignee
Viessmann Werke GmbH and Co KG
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 Viessmann Werke GmbH and Co KG filed Critical Viessmann Werke GmbH and Co KG
Publication of GB0822519D0 publication Critical patent/GB0822519D0/en
Publication of GB2456861A publication Critical patent/GB2456861A/en
Application granted granted Critical
Publication of GB2456861B publication Critical patent/GB2456861B/en
Expired - Fee Related 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
    • F23D14/46—Details, e.g. noise reduction means
    • 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
    • F23D14/583—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits
    • F23D14/586—Nozzles characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration of elongated shape, e.g. slits formed by a set of sheets, strips, ribbons or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F23N5/102—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples using electronic means
    • 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, e.g. noise reduction means
    • 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, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/002—Regulating fuel supply using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/10—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using thermocouples
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/24—Preventing development of abnormal or undesired conditions, i.e. safety arrangements
    • F23N5/242—Preventing development of abnormal or undesired conditions, i.e. safety arrangements using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/103—Flame diffusing means using screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2900/00—Special features of, or arrangements for controlling combustion
    • F23N2900/05005—Mounting arrangements for sensing, detecting or measuring devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Combustion (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

The invention relates to a device having a burner head 10 comprising a matrix surface 12 with a matrix of combustion gas apertures 14, and the matrix surface may be formed as a wire mesh. The device includes a control unit 18 for controlling a burner comprising the burner head, and an associated temperature sensor 22 disposed in the region of the matrix surface. The control unit is designed to operate the burner depending on the sensor signals, and the control unit which may drive an arrangement 16 for conveying fuel to the burner head. The temperature sensor may be a thermocouple, and the sensor may be formed by the crossing of two wires 20, 26, of the wire mesh made of different materials. The wires may be of nickel and nickel-chromium material, and together they may form the hot junction of a thermocouple. The temperature sensor may include an array of thermocouple devices that are uniformly distributed across the matrix surface. The invention also relates to a method of operating the burner using the temperature sensor.

Description

A DEVICE COMPRISING A BURNER HEAD AND
A METHOD FOR OPERATING A BURNER
The invention relates to a device having a burner head comprising a matrix surface with a matrix of combustion gas apertures, and having a control unit for controlling a burner comprising the burner head.
Furthermore, the invention relates to a method for operating a burner comprising such burner head.
A burner comprising a burner head is known, for example, from DE 69 123 329 T2, the burner head comprising a matrix surface having a matrix of combustion gas apertures. A control unit is used to control a burner comprising the burner head. In order to test the burner head suggested in the last mentioned document, but not to control the operation of the burner, DE 69 123 329 T2 describes that for testing purposes the burner head can be equipped with thermal elements.
Particularly, it is the object of the invention to improve the controllability of the operation of a generic burner and to provide a method which ensures a controlled operation of the burner, respectively.
In particular, the invention is based on a device having a burner head comprising a matrix surface with a matrix of combustion gas apertures, and having a control unit for controlling a burner comprising the burner head.
It is suggested that the burner head comprises at least one temperature sensor element arranged in the region of the matrix surface, and that the control unit is designed to operate the burner depending on the sensor signals of the temperature sensor element. In this manner it can be achieved that the control unit receives a feedback on the temperature in the region of the burner head so that the control unit can draw conclusions as to the actual operating conditions and/or malfunctions of the burner operation in order to take countermeasures, if necessary. For example, the temperature can be controlled to a predetermined value and a shutdown of the burner can be improved.
In this connection, a "matrix" of combustion gas apertures designates a distribution of any nature whatsoever of combustion gas apertures across the matrix surface. Therefore, this term is not limited to rectangular grids.
For example, rotationally symmetrical distributions of combustion gas apertures having multiple symmetry and/or distributions having a combustion gas aperture density that can be changed in a radial direction may also be considered. Furthermore, it is conceivable that the combustion gas apertures have different sizes and/or shapes.
The device according to the invention may be part of a gas burner or of another burner for burning gaseous or gasifiable fuels, such as oil.
Furthermore, the burner can be operated by a mixture of various fuels, the various fuels being able to be led in by the same or different combustion gas apertures.
In a further development of the invention it is suggested that the matrix surface is formed as a wire mesh. Thus, it is possible to achieve a matrix surface with a particularly low mass and an advantageously large relation of aperture surface to the surface occupied by the material. At the same time, a particularly high number of combustion gas apertures can be rendered possible with little constructive effort.
If the temperature sensor element is formed as a thermal element, it is possible to ensure a robust and reliable measurement of the temperature, even in case of high temperatures.
Furthermore, it is suggested that the thermal element is formed by a contact between two crossing wires of the wire mesh made from different materials.
A thermal element is a component made from two different metals connected at one point. At the free end of the two conductors connected to one another an electric potential is generated due to the Seebeck effect in case of a temperature difference along the conductors.
In an embodiment of the invention that is particularly advantageous as to the construction, it is suggested that the crossing wires are soldered or welded to each other. Thus, a well-defined contact between the two wires forming the thermal element can be ensured. Due to the inventive design of the thermal element from wires of a wire mesh it is possible to realize a plurality of temperature sensor elements uniformly distributed across the matrix surface in a particularly simple manner.
Here, it is particularly advantageous if at least a part of the wires running in a first direction in the wire mesh is made from another metal than at least a part of the wires running in a second direction in the wire mesh. The metals are chosen in an essentially advantageous manner so that the thermoelectric coefficients particularly strongly differ from one another.
It is a particular advantage for applications in burners if at least a part of the wires running in one direction is made from chromium-nickel CrNi, the other part advantageously being made from nickel. Thus results a thermal element pairing of the K-type. On principle, platinum-platinum/rhodium wires would also be conceivable which form a thermal element pairing of the S-type and can be used to measure temperatures of up to about 1,760°C.
It is particularly advantageous for a use in connection with heating facilities if the control unit is designed to use the sensor signals of the temperature sensor element to monitor the flame of a burner. Due to the low mass of the inventive thermal element and the arrangement of inventive thermal elements, respectively, these react very quickly so that an amount of fuel escapes until the reaction of the control device can be clearly reduced in comparison to the design of the invention in which conventional thermal elements are used.
Furthermore, it is suggested that the control unit is designed to control the operation of the burner depending on the sensor signals of the temperature sensor element. In this connection, a control shall designate a closed-loop operation, the temperature sensor elements being able in particular to supply the feedback necessary therefor. For example, a control can be performed in an operation state ensuring a constant burner temperature and a constant temperature of the matrix surface, respectively.
If a plurality of temperature sensor elements is distributed across the matrix surfacc, the differences between the temperature sensor signals can additionally be used to homogenize the flame across the matrix surface and to homogenize the burner temperature, respectively. To this end, the fuel supply to different areas of the matrix burning surface may e.g. be selectively controllable.
Furthermore, it is suggested that the control unit is designed to reduce a fuel supply to the burner if a sensor signal detected by the temperature sensor element exceeds a critical value. Thus, it is possible in a simple manner to realize a protection against overheating, and damage to a matrix surface which may possibly be sensitive can be avoided. Alternatively, for example, there may be an emergency shutdown if the temperatures detected by the temperature sensor elements fall below a critical value, which for example, is detrimental to low-pollutant combustion.
Furthermore, the invention relates to a method for operating a burner having a burner head comprising a matrix surface with a matrix of combustion gas apertures.
It is suggested to detect a characteristic for a temperature of the burner head in the region of the matrix surface via at least a temperature sensor element disposed in the region of the matrix surface and to use it to activate the burner. The method according to the invention allows a very controlled operation of the burner, and additional monitoring devices, for example ionization electrodes, can be avoided.
IT-se-.' Further features and advantages of the invention can be taken from the following description of the Figures. The description of the Figures relates to an embodiment of the invention and, like the preceding introduction of the description, the claims and Figures, contains numerous features in combination which the person skilled in the art will of course also acknowledge individually and unite them to reasonable further combinations.
In the Figures: Fig. 1 shows a burner having a burner head comprising a matrix surface with a matrix of combustion gas apertures, Fig. 2 shows a detail of a wire mesh forming the matrix surface according to a first embodiment of the invention, and Fig. 3 shows a detail of a wire mesh forming the matrix surface according to a second embodiment of the invention.
Fig. 1 shows a burner having a burner head 10 comprising a matrix surface 12 with a matrix of combustion gas apertures 14 (Fig. 2). The burner is controlled by a control unit 18 driving a fuel conveying unit 16. The fuel conveying unit 16 conveys gaseous fuel into a space delimited by the matrix surface, in which a slight overpressure is thus generated. The gaseous fuel escapes through the combustion gas apertures 14 of the matrix surface 12 and ignites at a flame front in the exterior space outside the burner head 10 delimited by the matrix surface.
The fuel passing through the matrix surface 12 is premixed with oxygen or oxygen-containing air, and the matrix surface 12 prevents the flame from propagating into the interior space through the high flow velocity gradients created at the edges of the combustion gas apertures 14.
Fig. 2 shows a detail of the matrix surface formed as a wire mesh according to a first embodiment of the invention. The wire mesh is made from nickel wires into which, for example, a nickel-chromium (NiCr) wire 20 is woven. The contact of the nickel-chromium wire 20 to the nickel wires of the wire mesh 14 creates a temperature sensor element formed as a thermal element because a thermoelectric voltage is created in the contact points between the wires due to a difference between the temperature in the center of the matrix surface and the suspension of the wires and due to the Seebeck effect. The crossing wires are soldered or welded to each other at the contact points so that these contact points respectively form a temperature sensor element 22 formed as a thermal element. In the embodiment shown in Fig. 2, the nickel-chromium wire 20 is welded to the wire mesh at each crossing point or connected thereto in another manner such that a series of thermal elements 22 arranged in a straight line is established. The nickel-chromium wire 20 and the nickel wires of the wire mesh of the matrix surface 14 are respectively connected to the control unit 18 via an analog/digital converter 24 comprising an integrated amplifier, which control unit can read out and evaluate the resulting thermoelectric voltages.
Fig. 3 shows an alternative embodiment of the invention in which single chromium-nickel wires 20 are woven into the wire mesh forming the matrix surface 12 in a first direction, while in a second direction and at regular intervals nickel wires 26 are woven in. In the embodiment shown in Fig. 3, every third wire in the first direction is a chromium-nickel wire 20 and in the second direction, which runs from the top left to the bottom right in Fig. 3, every fifth wire is a nickel wire 26. The chromium- nickel wires 20 and the nickel wires 26 are respectively connected to one another at the crossing points so that the respective crossing wires form a thermal element 22 at these crossing points. A plurality of temperature sensor elements 22 uniformly distributed across the matrix surface results.
The control unit is configured such that it controls a medium temperature of the matrix surface 12 of the burner head 10 in at least one operating state to a constant predetermined value. In this process, the control unit 18 uses the fuel amount conveyed by the fuel conveying unit 16 as a correcting variable. The temperature sensor elements 22 are interconnected such that they cause a negative feedback.
Although the flame of the burner head 10 could on principle be monitored by separate ionization electrodes, which are not explicitly shown here and use the rectifier effect of the flame in order to monitor the flame, the flame is monitored by means of the temperature sensors 22 in a particularly advantageous embodiment of the inventive method for operating a burner. From the drop of the temperatures detected by the temperature sensor elements 22 the control unit 18 recognizes that the flame has gone out and initiates an emergency shutdown in order to prevent the gas, which subsequently will not be burned, from escaping uncontrollably. Due to the inventive design of the thermal elements as crossing wires 20, 26 woven into the wire mesh of the matrix surface 12, the thermal elements 22 have a particularly low mass and react particularly fast.
In a further alternative embodiment of the invention it would be conceivable that a wire made of a first metal and running in a first direction crosses several wires made of a second metal and running in a second direction and is connected in an electrically conductive manner to only one or a part of the wires made from the second metal while it is insulated against another part of the wires made of the second metal. Thus, a selective, locally resolved temperature measurement can be realized.

Claims (14)

  1. Claims 1. A device having a burner head (10) comprising a matrix surface (12) with a matrix of combustion gas apertures (14), and having a control unit (18) for controlling a burner comprising the burner head (10), characterized in that the burner head (10) comprises at least a temperature sensor element (22) disposed in the region of the matrix surface (12) and that the control unit (1 8) is designed to operate the burner depending on the sensor signals of the temperature sensor element (22).
  2. 2. The device according to claim 1, characterized in that the matrix surface (12) is formed as a wire mesh.
  3. 3. The device according to any one of the preceding claims, characterized in that the temperature sensor element (22) is formed as a thermal element.
  4. 4. The device according to claims 2 and 3, characterized in that the thermal element (22) is formed by a contact of two crossing wires (20, 26) of the wire mesh made of different materials.
  5. 5. The device according to claim 4, characterized in that the crossing wires (20, 26) are soldered or welded to each other.
  6. 6. The device according to any one of the preceding claims, in particular according to claim 4, characterized by a plurality of temperature sensor elements (22) uniformly distributed across the matrix surface (12).
  7. 7. The device according at least to claim 4, characterized in that at least a part of the wires (20) running into a first direction in the wire mesh are made from a different metal than at least a part of the wires (26) running in a second direction in the wire mesh.
  8. 8. The device according to claim 6, characterized in that at least a part of the wires (20) running in one of the directions is made from CrNi.
  9. 9. The device according to any one of the preceding claims, characterized in that the control unit (18) is designed to use the sensor signals of the at least one temperature sensor element (22) to monitor a flame of the burner.
  10. 10. The device according to any one of the preceding claims, characterized in that the control unit (18) is designed to control the operation of the burner depending on the sensor signals of the temperature sensor element (22).
  11. 11. The device according to any one of the preceding claims, characterized in that the control unit (18) is designed to reduce the fuel supply of the burner if a sensor signal detected by the temperature sensor element (22) exceeds a critical value.
  12. 12. A method for operating a burner having a burner head comprising a matrix surface with a matrix of combustion gas apertures, characterized in that a characteristic for a temperature of the burner head in the region of the matrix surface is detected via at least one temperature sensor element disposed in the region of the matrix surface and used to operate the burner.
  13. 13. A device having a burner head (10) comprising a matrix surface (12) with a matrix of combustion gas apertures (14), and having a control unit (18) for controlling a burner comprising the burner head (10), the burner head (10) comprising at least one temperature sensor element (22) disposed in the region of the matrix surface (12) and that the control unit (18) is designed to operate the burner depending on the sensor signals of the temperature sensor element (22), and the matrix surface (12) being formed as a wire mesh.
  14. 14. A device having a burner head (10) comprising a matrix surface (12) formed as a mesh wire with a matrix of combustion gas apertures (14), and having a control unit (18) for controlling a burner comprising the burner head (10), the burner head (10) comprising at least one thermal element (22) disposed in the region of the matrix surface (12) and that the control unit (18) is designed to operate the burner depending on the sensor signals of the thermal element (22), the thermal element (22) being formed by the contact of two crossing wires (20, 26) of the wire mesh made from different materials.
GB0822519.5A 2008-01-25 2008-12-10 A device comprising a burner head and a method for operating a burner Expired - Fee Related GB2456861B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008006067A DE102008006067B4 (en) 2008-01-25 2008-01-25 Device with a burner head and method for operating a burner

Publications (3)

Publication Number Publication Date
GB0822519D0 GB0822519D0 (en) 2009-01-14
GB2456861A true GB2456861A (en) 2009-07-29
GB2456861B GB2456861B (en) 2012-08-15

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Family Applications (1)

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GB0822519.5A Expired - Fee Related GB2456861B (en) 2008-01-25 2008-12-10 A device comprising a burner head and a method for operating a burner

Country Status (4)

Country Link
BE (1) BE1018370A6 (en)
DE (1) DE102008006067B4 (en)
FR (1) FR2926873B1 (en)
GB (1) GB2456861B (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012152571A1 (en) * 2011-05-06 2012-11-15 Bekaert Combustion Technology B.V. Premix gas burner with temperature measurement
WO2016083776A1 (en) * 2014-11-28 2016-06-02 Edwards Limited Radiant burner for noxious gas incineration
EP3105503A4 (en) * 2013-02-14 2018-01-17 Clearsign Combustion Corporation Method for operating a combustion system including a perforated flame holder
US10156356B2 (en) 2013-10-14 2018-12-18 Clearsign Combustion Corporation Flame visualization control for a burner including a perforated flame holder
US10190767B2 (en) 2013-03-27 2019-01-29 Clearsign Combustion Corporation Electrically controlled combustion fluid flow
US10281141B2 (en) 2014-10-15 2019-05-07 Clearsign Combustion Corporation System and method for applying an electric field to a flame with a current gated electrode
US10386062B2 (en) 2013-02-14 2019-08-20 Clearsign Combustion Corporation Method for operating a combustion system including a perforated flame holder
US10571124B2 (en) 2013-02-14 2020-02-25 Clearsign Combustion Corporation Selectable dilution low NOx burner
US10808927B2 (en) 2013-10-07 2020-10-20 Clearsign Technologies Corporation Pre-mixed fuel burner with perforated flame holder

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DE102021102740A1 (en) 2021-02-05 2022-08-11 Vaillant Gmbh Method and arrangement for detecting and/or observing flames and their effects in a heating device and burner body constructed accordingly

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US20060207524A1 (en) * 2004-09-03 2006-09-21 Peart Jacob A Water heater with cross-sectionally elongated raw fuel jet pilot orifice
US20060105281A1 (en) * 2004-11-18 2006-05-18 Peart Jacob A Water heater burner clogging detection and shutdown system
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WO2007126255A1 (en) * 2006-04-27 2007-11-08 Sung Nam Hong Non-grounded type sheath thermocouple and method of manufacturing the same

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9528699B2 (en) 2011-05-06 2016-12-27 Bekaert Combustion Technology B.V. Premix gas burner with temperature measurement
WO2012152571A1 (en) * 2011-05-06 2012-11-15 Bekaert Combustion Technology B.V. Premix gas burner with temperature measurement
US10337729B2 (en) 2013-02-14 2019-07-02 Clearsign Combustion Corporation Fuel combustion system with a perforated reaction holder
US10386062B2 (en) 2013-02-14 2019-08-20 Clearsign Combustion Corporation Method for operating a combustion system including a perforated flame holder
EP3105503A4 (en) * 2013-02-14 2018-01-17 Clearsign Combustion Corporation Method for operating a combustion system including a perforated flame holder
US11156356B2 (en) 2013-02-14 2021-10-26 Clearsign Technologies Corporation Fuel combustion system with a perforated reaction holder
US10571124B2 (en) 2013-02-14 2020-02-25 Clearsign Combustion Corporation Selectable dilution low NOx burner
US10190767B2 (en) 2013-03-27 2019-01-29 Clearsign Combustion Corporation Electrically controlled combustion fluid flow
US10808925B2 (en) 2013-03-27 2020-10-20 Clearsign Technologies Corporation Method for electrically controlled combustion fluid flow
US10808927B2 (en) 2013-10-07 2020-10-20 Clearsign Technologies Corporation Pre-mixed fuel burner with perforated flame holder
US10156356B2 (en) 2013-10-14 2018-12-18 Clearsign Combustion Corporation Flame visualization control for a burner including a perforated flame holder
US10281141B2 (en) 2014-10-15 2019-05-07 Clearsign Combustion Corporation System and method for applying an electric field to a flame with a current gated electrode
WO2016083776A1 (en) * 2014-11-28 2016-06-02 Edwards Limited Radiant burner for noxious gas incineration
TWI682127B (en) * 2014-11-28 2020-01-11 英商愛德華有限公司 Radiant burner
CN107002997A (en) * 2014-11-28 2017-08-01 爱德华兹有限公司 The radiant burner burned for harmful gas
CN107002997B (en) * 2014-11-28 2020-09-22 爱德华兹有限公司 Radiation burner for harmful gas incineration

Also Published As

Publication number Publication date
GB0822519D0 (en) 2009-01-14
FR2926873B1 (en) 2014-03-07
FR2926873A1 (en) 2009-07-31
BE1018370A6 (en) 2010-09-07
GB2456861B (en) 2012-08-15
DE102008006067A1 (en) 2009-07-30
DE102008006067B4 (en) 2013-07-04

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Effective date: 20151210