CA2726927A1 - Improved radiant burner - Google Patents
Improved radiant burner Download PDFInfo
- Publication number
- CA2726927A1 CA2726927A1 CA2726927A CA2726927A CA2726927A1 CA 2726927 A1 CA2726927 A1 CA 2726927A1 CA 2726927 A CA2726927 A CA 2726927A CA 2726927 A CA2726927 A CA 2726927A CA 2726927 A1 CA2726927 A1 CA 2726927A1
- Authority
- CA
- Canada
- Prior art keywords
- radiant
- burner
- screen
- radiant burner
- combustion chamber
- 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.)
- Abandoned
Links
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 239000000919 ceramic Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910010271 silicon carbide Inorganic materials 0.000 description 7
- 239000004411 aluminium Substances 0.000 description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 6
- 229910021343 molybdenum disilicide Inorganic materials 0.000 description 6
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 6
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 239000003779 heat-resistant material Substances 0.000 description 4
- 229910001293 incoloy Inorganic materials 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 229910008814 WSi2 Inorganic materials 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 3
- 239000010431 corundum Substances 0.000 description 3
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 229910052863 mullite Inorganic materials 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 3
- 229910021332 silicide Inorganic materials 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 3
- 229910001928 zirconium oxide Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 229910052878 cordierite Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001026 inconel Inorganic materials 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 229910000953 kanthal Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
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
- F23D14/148—Radiant burners using screens or perforated plates with grids, e.g. strips or rods, as radiation intensifying 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
- F23D14/12—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
- F23D14/12—Radiant burners
- F23D14/14—Radiant burners using screens or perforated plates
- F23D14/149—Radiant burners using screens or perforated plates with wires, threads or gauzes as radiation intensifying 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
- F23D—BURNERS
- F23D2203/00—Gaseous fuel burners
- F23D2203/10—Flame diffusing means
- F23D2203/106—Assemblies of different layers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
- F23D2212/10—Burner material specifications ceramic
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D2212/00—Burner material specifications
- F23D2212/20—Burner material specifications metallic
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 radiant burner comprises a body defining a premixing chamber and a combustion chamber. The premixing chamber is separated from the combustion chamber by at least one radiant burner plate (2) which has multiple levels of burner surface.
The combustion chamber is further limited by a first radiant screen (4). The radiant burner further comprises a second radiant screen (3) in the combustion chamber. The second radiant screen is spaced from, but near and parallel to the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plate when in use.
The combustion chamber is further limited by a first radiant screen (4). The radiant burner further comprises a second radiant screen (3) in the combustion chamber. The second radiant screen is spaced from, but near and parallel to the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plate when in use.
Description
Improved radiant burner Description Technical Field [0001] The present invention relates to radiant burners comprising a radiant burner plate and a screen.
Background Art [0002] Radiant burners comprising a radiant burner plate and a screen are known e.g. from US4799879 or EP0539279. The screen together with the radiant burner plate provides the radiative output of the burner, which averages at levels around 50% efficiency. In the past the radiative output of the burners has been increased by modification of the radiant burner plate from a radiant burner plate with rows of through holes or perforations serving to channel the mixture of air and combustion agent from the rear of the plate to the radiating face, to a radiant burner plate wherein the through holes or perforations are arranged in what is nowadays called honeycomb pattern as described in e.g. US4,569,657 or US4,799,879.
This or similar modifications of the radiant burner plate increased the temperature level and consequently also the radiative output of the burner.
On the other hand, these honeycomb-like patterns are creating local overheating of the burner plate on the places where the flames are, and also cause poor temperature uniformity and relative low average burner surface temperature and thus lower energy efficiency. These local high temperatures define therefore also the limitation of the use of such through hole or perforation patterns, and also define the limitation on the amount of radiation energy which can be obtained with such systems.
Background Art [0002] Radiant burners comprising a radiant burner plate and a screen are known e.g. from US4799879 or EP0539279. The screen together with the radiant burner plate provides the radiative output of the burner, which averages at levels around 50% efficiency. In the past the radiative output of the burners has been increased by modification of the radiant burner plate from a radiant burner plate with rows of through holes or perforations serving to channel the mixture of air and combustion agent from the rear of the plate to the radiating face, to a radiant burner plate wherein the through holes or perforations are arranged in what is nowadays called honeycomb pattern as described in e.g. US4,569,657 or US4,799,879.
This or similar modifications of the radiant burner plate increased the temperature level and consequently also the radiative output of the burner.
On the other hand, these honeycomb-like patterns are creating local overheating of the burner plate on the places where the flames are, and also cause poor temperature uniformity and relative low average burner surface temperature and thus lower energy efficiency. These local high temperatures define therefore also the limitation of the use of such through hole or perforation patterns, and also define the limitation on the amount of radiation energy which can be obtained with such systems.
[0003] Another way of achieving higher radiative output was proposed in e.g.
US
3,847,536 which uses two radiative screens above the radiant burner plate. Also this modification of the radiant burner caused local overheating of the radiant burner plates in the middle of the radiant burner, which urged the skilled person to lower inputs which resulted in lower (local) temperatures of the radiant burner plate for prolonging the life time of the radiant burner.
[0004] However, still further enhanced efficiency of the radiant burners is desired.
Disclosure of Invention [0005] An aspect of the claimed invention provides a radiant burner which comprises a body defining a premixing chamber and a combustion chamber. The premixing chamber is separated from the combustion chamber by at least one radiant burner plate which has multiple levels of burner surface. The combustion chamber is further limited by a first radiant screen. The radiant burner further comprises a second radiant screen in the combustion chamber. The second radiant screen is spaced from, but near and parallel to the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plates by back radiation when in use. In a preferred embodiment, the second radiant screen is an arrangement of parallel spaced round rods or square bars. In a preferred embodiment, first and second radiant screens are produced from highly heat resistant materials such as ceramics, especially aluminium or zirconium oxide, aluminium titanate, silicon oxide, corundum or mullite, silicon carbide, silicon nitride or metal infiltrated ceramics, such as silicon-infiltrated silicon carbide. Alternatively, the radiant screens can also be fabricated from heat-resistant materials of other nature such as e.g. materials which contain more than 50% by weight of a metal silicide, such as molybdenum disilicide (MoSi2) or tungsten disilicide (WSi2). In another preferred embodiment, the radiant screens are fabricated from highly heat resistant steel grades, such as high level stainless steel grades like Kanthal APM or APMT, different grades of FeCrAI alloy designed for high temperature corrosion, Chrome/Nickel steel grades like Avesta 253 MA, 153 MA, Inconel 601, Incoloy 800HT, Incoloy MA956.
US
3,847,536 which uses two radiative screens above the radiant burner plate. Also this modification of the radiant burner caused local overheating of the radiant burner plates in the middle of the radiant burner, which urged the skilled person to lower inputs which resulted in lower (local) temperatures of the radiant burner plate for prolonging the life time of the radiant burner.
[0004] However, still further enhanced efficiency of the radiant burners is desired.
Disclosure of Invention [0005] An aspect of the claimed invention provides a radiant burner which comprises a body defining a premixing chamber and a combustion chamber. The premixing chamber is separated from the combustion chamber by at least one radiant burner plate which has multiple levels of burner surface. The combustion chamber is further limited by a first radiant screen. The radiant burner further comprises a second radiant screen in the combustion chamber. The second radiant screen is spaced from, but near and parallel to the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plates by back radiation when in use. In a preferred embodiment, the second radiant screen is an arrangement of parallel spaced round rods or square bars. In a preferred embodiment, first and second radiant screens are produced from highly heat resistant materials such as ceramics, especially aluminium or zirconium oxide, aluminium titanate, silicon oxide, corundum or mullite, silicon carbide, silicon nitride or metal infiltrated ceramics, such as silicon-infiltrated silicon carbide. Alternatively, the radiant screens can also be fabricated from heat-resistant materials of other nature such as e.g. materials which contain more than 50% by weight of a metal silicide, such as molybdenum disilicide (MoSi2) or tungsten disilicide (WSi2). In another preferred embodiment, the radiant screens are fabricated from highly heat resistant steel grades, such as high level stainless steel grades like Kanthal APM or APMT, different grades of FeCrAI alloy designed for high temperature corrosion, Chrome/Nickel steel grades like Avesta 253 MA, 153 MA, Inconel 601, Incoloy 800HT, Incoloy MA956.
[0006] The radiant burner plate is preferably made of a ceramic material with high temperature resistance, and excellent mechanical and thermodynamic properties such as e.g. cordierite or zirconia; partially stabilised zirconia (PSZ), alumina, silicon carbides or other high level technical ceramics.
Height difference in between two levels of burner surface of the radiant burner plate is preferably from 1 to 20 mm. More preferably, from 1 to 10 mm. Even more preferably, from 2 to 7 mm. Most preferably 5 mm.
Height difference in between two levels of burner surface of the radiant burner plate is preferably from 1 to 20 mm. More preferably, from 1 to 10 mm. Even more preferably, from 2 to 7 mm. Most preferably 5 mm.
[0007] The radiant burner plate has multiple levels of burner surfaces. In a preferred embodiment, these multiple levels are arranged in rows and are alternating per one row of through holes/perforations on the radiant burner plate. An example of such burner plate can be found in Figure 1, or alternatives in Figures 2 and 3. These types of burner plates, as such, provide less emissivity compared to ceramic tiles with honeycomb or similar perforation patterns. This is due to the multiple level burner surface, wherein the lower levels of the burner surface of the radiant burner plates provide a higher radiative output because the sides of the rows also heat up and provide an additional radiative output, but the highest level of burner surface does not have such additional radiative output. So the overall radiative output, and therefore also the energy efficiency, of such multilevel radiant burner plate as such, is lower than honeycomb-like perforations in the radiant burner plate.
[0008] However, although radiant burner plates are used which as such have a lower radiative output, it was surprisingly observed that by the use of such a second radiant screen near the radiant burner plates, the radiative output of the radiant burner plates can be increased without leading to local overheating of the burner plates, as this would result in early failure of the radiant burner plates. This might be explained, without pretending to be scientifically correct, by the fact that the back radiation of the second radiant screen on the radiant multilevel burner plates is the highest on the highest level of the burner surface as this is closest to the second radiant screen. This highest level thereby also heats up more than the lower levels of the burner surface, which are at a bigger distance from this second radiant screen. As these lower levels in the burner surface of the radiant burner plates were already at higher temperatures by the effect of the flames heating up the surface surrounding the cavity wherein the perforations open, the overall effect of the present invention is that the different levels in the burner surface of the radiant burner plates are at the same temperature when in use. Stated otherwise, a greater temperature uniformity of the burner surface of the radiant burner plate is attained. The person skilled in the art will understand that this greater temperature uniformity combined with the plurality of radiant screens results in a significant higher energy efficiency of the complete radiant burner. In a preferred embodiment, the distance between the second radiant screen and the highest level of burner surface of the at least one radiant burner plates is between 3 and 50 mm. More preferably, the distance between the second radiant screen and highest level of the radiant burner plate is between 5 and 30 mm, even more preferably between 10 and 25 mm, most preferably between 15 and 20 mm. In a preferred embodiment, the second radiant screen is positioned such that the second radiant screen follows the direction of the rows of the highest level of burner surface of the radiant burner plate.
[0009] The first radiant screen is preferably a metal grid. In another preferred embodiment, the first radiant screen is an arrangement of parallel spaced round rods or square bars. More preferably, the first and second radiant screens are made of an arrangement of parallel spaced round rods or square bars. In a further preferred embodiment, the first and second radiant screens are arranged in the same direction. In an alternative preferred embodiment, the first and second radiant screens are arranged in shifted angles with respect to one another. More preferably, the first and second radiant screens are at a 90 angle.
[0010] A further observed advantage of the present invention is a lower level of emissions of byproducts of combustion, such as Nitrogen Oxides or Carbon Monoxide, which is probably due to the second radiant screen which acts as an extended burner surface and provides a more complete combustion of the gas-air mixture.
[0011] Another aspect of the claimed invention provides a radiant burner with at least one further radiant screen in the combustion chamber.
Brief Description of Figures in the Drawings [0012] Example embodiments of the invention are described hereinafter with reference to the accompanying drawings in which [0013] - Figures 1 to 3 show a cross section of example embodiments of radiant burner plates used in the present invention.
Brief Description of Figures in the Drawings [0012] Example embodiments of the invention are described hereinafter with reference to the accompanying drawings in which [0013] - Figures 1 to 3 show a cross section of example embodiments of radiant burner plates used in the present invention.
[0014] - Figure 4 shows an example embodiment of the present invention, with cut out for better view of the build up of the radiant burner.
[0015] - Figure 5 shows a side view of the example radiant burner of figure 4, also with cut out for better view of the build up of the radiant burner.
[0016] - Figure 6 shows an alternative example embodiment of the present invention.
[0017] - Figure 7 shows a side view of the example radiant burner of figure 6.
Mode(s) for Carrying Out the Invention [0018] Example embodiments of the present invention will now be described with reference to Figures 1 to 7.
Mode(s) for Carrying Out the Invention [0018] Example embodiments of the present invention will now be described with reference to Figures 1 to 7.
[0019] Figures 1 to 3 show cross sections of example embodiments of radiant burner plates which might be used in the present invention. Figure 1 shows two levels of burner surface of the radiant burner plate 2, figures 2 and 3 show three levels of burner surface, in two alternative forms.
[0020] Figures 4 and 5 show an example embodiment of the present invention.
The first radiant screen 4 is a highly heat resisting metal grid fabricated from highly heat resistant steel grades, such as high level stainless steel grades like Kanthal APM or APMT, different grades of FeCrAI alloy designed for high temperature corrosion, Chrome/Nickel steel grades like Avesta 253 MA, 153 MA, Inconel 601, Incoloy 800HT, Incoloy MA956.
The second radiant screen 3 is made of a highly heat resisting ceramic material, in this example aluminium or zirconium oxide, aluminium titanate, silicon oxide, corundum or mullite, silicon carbide, silicon nitride or metal infiltrated ceramics, such as silicon-infiltrated silicon carbide with a silicon infiltration grade of 5 to 50 % or even more. Alternatively, the radiant screens can also be fabricated from heat-resistant materials of other nature such as e.g. materials which contain more than 50% by weight of a metal silicide, such as molybdenum disilicide (MoSi2) or tungsten disilicide (WSi2). The radiant burner plate 2 is made of a two level burner surface, ceramic tile made of cordorite or alternate thermodynamically suited ceramics as mentioned above.
The first radiant screen 4 is a highly heat resisting metal grid fabricated from highly heat resistant steel grades, such as high level stainless steel grades like Kanthal APM or APMT, different grades of FeCrAI alloy designed for high temperature corrosion, Chrome/Nickel steel grades like Avesta 253 MA, 153 MA, Inconel 601, Incoloy 800HT, Incoloy MA956.
The second radiant screen 3 is made of a highly heat resisting ceramic material, in this example aluminium or zirconium oxide, aluminium titanate, silicon oxide, corundum or mullite, silicon carbide, silicon nitride or metal infiltrated ceramics, such as silicon-infiltrated silicon carbide with a silicon infiltration grade of 5 to 50 % or even more. Alternatively, the radiant screens can also be fabricated from heat-resistant materials of other nature such as e.g. materials which contain more than 50% by weight of a metal silicide, such as molybdenum disilicide (MoSi2) or tungsten disilicide (WSi2). The radiant burner plate 2 is made of a two level burner surface, ceramic tile made of cordorite or alternate thermodynamically suited ceramics as mentioned above.
[0021] Figures 6 and 7 show an alternative example embodiment of the present invention. The first and second radiant screens are made of highly heat resisting material, in this example a ceramic like aluminium or zirconium oxide, aluminium titanate, silicon oxide, corundum or mullite, silicon carbide, silicon nitride or metal infiltrated ceramics, such as silicon-infiltrated silicon carbide with a silicon infiltration grade of 5 to 50 % or even more. Alternatively, the radiant screens can also be fabricated from heat-resistant materials of other nature such as e.g. materials which contain more than 50% by weight of a metal silicide, such as molybdenum disilicide (MoSi2) or tungsten disilicide (WSi2). In this example this first and second radiant screens are arranged in directions which are 90 with respect to one another. The radiant burner plate 2 is made of a two level burner surface, ceramic tile made of cordierite.
[0022] Thus there has been described a new radiant burner 1 possessing great flexibility of use and which is capable of reaching temperatures of about 1300 C with a considerable radiation factor increase of about 10 %
compared to existing technology.
compared to existing technology.
[0023] Because of their possible use at very high temperatures e.g. 1300 C and higher, their high energy efficiency and their long service life, the radiant burner of the present invention are particularly suitable for drying web materials at high web speeds. One preferred area of application is the drying of moving paper webs.
[0024] The new improved radiant burner comprises a body defining a premixing chamber and a combustion chamber. The premixing chamber is separated from the combustion chamber by at least one radiant burner plate which has multiple levels of burner surface. The combustion chamber is further limited by a first radiant screen. The radiant burner further comprises a second radiant screen in the combustion chamber.
The second radiant screen is spaced from, but near the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plate when in use.
The second radiant screen is spaced from, but near the radiant burner plate(s), such that this second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plate when in use.
Claims (6)
1. A radiant burner comprising a body defining a premixing chamber and a combustion chamber, said premixing chamber being separated from the combustion chamber by at least one radiant burner plate which has multiple levels of burner surface, said combustion chamber being further limited by a first radiant screen characterised in that said radiant burner further comprises a second radiant screen in said combustion chamber, said second radiant screen being spaced from, but near and parallel to said at least one radiant burner plate, such that said second radiant screen acts as an extended burner surface and also heats up said at least one radiant burner plate when in use.
2. A radiant burner according to claim 1, wherein said second radiant screen is an arrangement of parallel spaced round rods or square bars.
3. A radiant burner according to claims 1 or 2, wherein said first radiant screen is a metal grid or an arrangement of parallel spaced round rods or square bars.
4. A radiant burner according to any of the claims 1 to 3, wherein said at least one radiant burner plate is a ceramic burner plate.
5. A radiant burner according to any of the claims 1 to 4, wherein said at least one radiant burner plate has a height difference in between 2 levels of burner surface of 1 to 20 mm.
6. A radiant burner according to claim 1, wherein said combustion chamber further comprises at least one further radiant screen.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08159919.3 | 2008-07-08 | ||
EP08159919 | 2008-07-08 | ||
PCT/EP2009/058429 WO2010003904A1 (en) | 2008-07-08 | 2009-07-03 | Improved radiant burner |
Publications (1)
Publication Number | Publication Date |
---|---|
CA2726927A1 true CA2726927A1 (en) | 2010-01-14 |
Family
ID=40119399
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2726927A Abandoned CA2726927A1 (en) | 2008-07-08 | 2009-07-03 | Improved radiant burner |
Country Status (7)
Country | Link |
---|---|
US (1) | US20110111356A1 (en) |
EP (1) | EP2310743B1 (en) |
JP (1) | JP5529126B2 (en) |
CN (1) | CN102089586B (en) |
BR (1) | BRPI0915469B1 (en) |
CA (1) | CA2726927A1 (en) |
WO (1) | WO2010003904A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010051414B4 (en) * | 2010-11-16 | 2013-10-24 | Ulrich Dreizler | Combustion method with cool flame root |
TWI570362B (en) * | 2010-12-20 | 2017-02-11 | 索拉羅尼克斯股份有限公司 | Gas fired radiation emitter with embossed screen |
CN102798123B (en) * | 2011-05-26 | 2016-05-04 | 中山炫能燃气科技股份有限公司 | A kind of infrared metal heater and preparation method thereof |
WO2017124008A1 (en) | 2016-01-13 | 2017-07-20 | Clearsign Combustion Corporation | Perforated flame holder with gaps between tile groups |
CN104884868B (en) * | 2013-02-14 | 2018-02-06 | 克利尔赛恩燃烧公司 | Startup method and mechanism for the burner with perforation flameholder |
US11953201B2 (en) | 2013-02-14 | 2024-04-09 | Clearsign Technologies Corporation | Control system and method for a burner with a distal flame holder |
US9810435B2 (en) | 2013-10-14 | 2017-11-07 | Illinois Tool Works Inc. | Gas fired infrared burner with auxiliary flame arrangement |
WO2015110303A1 (en) | 2014-01-23 | 2015-07-30 | Solaronics S.A. | Gas fired radiant emitter |
CN104373937B (en) * | 2014-11-13 | 2017-04-12 | 艾欧史密斯(中国)热水器有限公司 | Fuel gas premixing burner and fuel gas water heater |
EP3449183B1 (en) | 2016-04-29 | 2023-12-06 | ClearSign Technologies Corporation | Burner system with discrete transverse flame stabilizers |
WO2018085152A1 (en) | 2016-11-04 | 2018-05-11 | Clearsign Combustion Corporation | Plasma pilot |
CN110199153B (en) | 2017-03-02 | 2021-09-03 | 美一蓝技术公司 | Combustion system with perforated flame holder and vortex-stabilized preheated flame |
DE102017109152B4 (en) * | 2017-04-28 | 2019-01-03 | Voith Patent Gmbh | Infrared emitters and methods of mounting such |
DE102017109154A1 (en) * | 2017-04-28 | 2018-10-31 | Voith Patent Gmbh | Infrared heaters |
DE102017109151A1 (en) * | 2017-04-28 | 2018-10-31 | Voith Patent Gmbh | Infrared heaters |
EP3598000B1 (en) | 2018-07-20 | 2021-04-28 | Solaronics | Gas fired radiant emitter comprising a radiant screen |
FR3103260B1 (en) | 2019-11-15 | 2021-11-26 | Solaronics Sa | Infrared radiation emitter |
FR3117191B1 (en) | 2020-12-03 | 2023-02-10 | Solaronics | Infrared radiation emitter |
Family Cites Families (52)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1283179A (en) | 1960-09-27 | 1962-02-02 | Antargaz | Radiant plates for burners |
US3155142A (en) * | 1961-02-13 | 1964-11-03 | Minnesota Mining & Mfg | Radiant gas burner |
GB1080355A (en) | 1963-08-14 | 1967-08-23 | Osaka Gas Co Ltd | Improvements in or relating to infrared ray emitting apparatus |
US3251396A (en) * | 1963-08-20 | 1966-05-17 | Corning Glass Works | Ceramic burner plate |
US3291188A (en) * | 1964-03-23 | 1966-12-13 | Partiot Maurice | Deep combustion radiant elements |
ES318286A1 (en) | 1965-10-08 | 1966-01-01 | Ultraesteatita Soc Anenima | Ceramic plate for gas burners |
US3519024A (en) * | 1966-01-06 | 1970-07-07 | Gen Electric | Device for the prepatterned control of flow distribution in fluid flow experiencing a change in area and/or direction |
US3558252A (en) * | 1968-07-29 | 1971-01-26 | Ind Del Hogar Sa | Radiating element |
FR2232735B1 (en) * | 1972-05-08 | 1976-08-06 | Antargaz | |
US3954387A (en) * | 1972-06-08 | 1976-05-04 | J. Tennant & Sons (Warrington) Limited | Burners |
JPS5250036A (en) * | 1975-10-20 | 1977-04-21 | Rinnai Corp | Infrared gas combustion panel |
DE2841105C2 (en) * | 1978-09-21 | 1986-10-16 | Siemens AG, 1000 Berlin und 8000 München | Gasification burner |
DE8002490U1 (en) | 1980-01-31 | 1982-03-18 | Rinnai K.K., Nagoya, Aichi | INFRARED RADIATION GAS BURNER PLATE |
EP0070905B1 (en) * | 1981-02-03 | 1988-09-14 | Matsushita Electric Industrial Co., Ltd. | Ceramic burner plate and method of manufacturing the same |
FR2534353A1 (en) * | 1982-10-11 | 1984-04-13 | Vaneecke Solaronics | ALVEOLED RADIANT FACING PLATE FOR RADIANT BURNER |
US4595664A (en) * | 1983-02-16 | 1986-06-17 | Matsushita Electric Industrial Co., Ltd. | Burner skeleton |
JPS6082711A (en) * | 1983-10-13 | 1985-05-10 | Matsushita Electric Ind Co Ltd | Infrared ray burner |
US4799879A (en) * | 1985-12-02 | 1989-01-24 | Solaronics Vaneecke | Radiant burners with a ceramic frame |
JPS6298926U (en) * | 1985-12-05 | 1987-06-24 | ||
JPH0318816Y2 (en) * | 1986-07-31 | 1991-04-22 | ||
JPS643407A (en) * | 1987-04-16 | 1989-01-09 | Rinnai Kk | Combustion plate |
US4919609A (en) * | 1989-05-02 | 1990-04-24 | Gas Research Institute | Ceramic tile burner |
DE4110301A1 (en) | 1991-03-28 | 1992-10-01 | Kurt Krieger | BURNER PLATE FOR RADIATION BURNER |
SE468876B (en) * | 1991-07-08 | 1993-04-05 | Staalhane Henrik | DEVICE ON GAS OIL GRILL |
FR2683022B1 (en) * | 1991-10-25 | 1997-07-18 | Gaz De France | RADIANT BURNER WITH CERAMIC SCREEN. |
US5219802A (en) * | 1992-05-04 | 1993-06-15 | Industrial Technology Research Institute | Porous ceramic radiation plate |
US5409375A (en) * | 1993-12-10 | 1995-04-25 | Selee Corporation | Radiant burner |
US5711661A (en) * | 1994-05-03 | 1998-01-27 | Quantum Group, Inc. | High intensity, low NOx matrix burner |
US5591025A (en) * | 1995-07-24 | 1997-01-07 | Invernizzi; Gianmario | Combustion head, in particular for gas burners |
DE19604585A1 (en) | 1996-02-08 | 1997-08-14 | Dvgw Ev | Small firing for domestic use |
CN2262190Y (en) * | 1996-05-31 | 1997-09-10 | 李振乡 | Stick type far infrared gas burner |
CN2265486Y (en) * | 1996-06-19 | 1997-10-22 | 田连华 | Energy-saving burner |
JPH108829A (en) * | 1996-06-26 | 1998-01-13 | Riboole:Kk | Fireproofing storage container |
CA2336036C (en) * | 1998-07-02 | 2007-11-27 | Willie H. Best | Heating assembly and cooking apparatus |
FR2791416B1 (en) * | 1999-03-25 | 2001-06-15 | Sunkiss Aeronautique | CATALYTIC COMBUSTION DEVICE EMITTING INFRA-RED RADIATION |
DE19928096A1 (en) * | 1999-06-19 | 2000-12-21 | Krieger Gmbh & Co Kg | Maintainable gas-heated infra-red radiator for dryer used with e.g. continuous bands of paper and card, includes detachable fastenings which can be released manually from the front |
DE29924045U1 (en) | 1999-12-04 | 2001-10-11 | Krieger GmbH & Co. KG, 41238 Mönchengladbach | Gas-heated infrared heater for an infrared drying unit |
GB9929257D0 (en) * | 1999-12-11 | 2000-02-02 | Bray Technologies Plc | Improved burner plaque |
DE10205589A1 (en) | 2002-02-11 | 2003-08-21 | Bsh Bosch Siemens Hausgeraete | Refrigeration device with temperature range labeling |
DE10222450A1 (en) * | 2002-02-12 | 2003-08-21 | Voith Paper Patent Gmbh | Infrared heater designed as a surface heater |
CA2475955A1 (en) * | 2002-02-12 | 2003-08-21 | Voith Paper Patent Gmbh | Infrared radiator embodied as a surface radiator |
CN2596245Y (en) * | 2002-10-22 | 2003-12-31 | 马金全 | Civil infrared burner |
CA2571545C (en) * | 2004-06-23 | 2012-03-27 | Willie H. Best | Infrared emitting apparatus |
US7611351B2 (en) * | 2005-06-24 | 2009-11-03 | Chemical Physics Technologies, Inc. | Radiant gas burner |
DE102005031231B3 (en) * | 2005-07-01 | 2007-01-11 | J. Eberspächer GmbH & Co. KG | Wall structure for a burner |
US7721726B2 (en) * | 2006-01-03 | 2010-05-25 | Lg Electronics Inc. | Gas radiation burner |
DE602007010507D1 (en) * | 2006-09-26 | 2010-12-23 | Char Broil Llc | COOKING DEVICE WITH CONKAVEM RADIATOR |
WO2008109633A2 (en) * | 2007-03-06 | 2008-09-12 | Itw Food Equipment Group Llc | Charbroiler with improved heat distribution |
DE102009028624A1 (en) * | 2009-08-18 | 2011-02-24 | Sandvik Intellectual Property Ab | radiant burner |
FR2951808B1 (en) * | 2009-10-22 | 2011-11-18 | Gdf Suez | RADIANT BURNER WITH INCREASED YIELD, AND METHOD FOR IMPROVING THE YIELD OF A RADIANT BURNER |
IT1402900B1 (en) * | 2010-11-24 | 2013-09-27 | Worgas Bruciatori Srl | BURNER WITH HIGH STABILITY |
TWI570362B (en) * | 2010-12-20 | 2017-02-11 | 索拉羅尼克斯股份有限公司 | Gas fired radiation emitter with embossed screen |
-
2009
- 2009-07-03 CN CN2009801262441A patent/CN102089586B/en active Active
- 2009-07-03 CA CA2726927A patent/CA2726927A1/en not_active Abandoned
- 2009-07-03 JP JP2011517113A patent/JP5529126B2/en active Active
- 2009-07-03 EP EP09793931.8A patent/EP2310743B1/en active Active
- 2009-07-03 US US13/002,695 patent/US20110111356A1/en not_active Abandoned
- 2009-07-03 WO PCT/EP2009/058429 patent/WO2010003904A1/en active Application Filing
- 2009-07-03 BR BRPI0915469A patent/BRPI0915469B1/en active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
JP2011527413A (en) | 2011-10-27 |
BRPI0915469A2 (en) | 2015-11-10 |
EP2310743B1 (en) | 2020-01-15 |
JP5529126B2 (en) | 2014-06-25 |
WO2010003904A1 (en) | 2010-01-14 |
EP2310743A1 (en) | 2011-04-20 |
CN102089586B (en) | 2013-02-06 |
CN102089586A (en) | 2011-06-08 |
US20110111356A1 (en) | 2011-05-12 |
BRPI0915469B1 (en) | 2020-04-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2310743B1 (en) | Radiant burner | |
EP2307801B1 (en) | Improved insulation for radiant burner | |
EP2655967B1 (en) | Gas fired radiation emitter with embossed screen | |
EP0705409B1 (en) | Multiple firing rate zone burner and method | |
US4889481A (en) | Dual structure infrared surface combustion burner | |
US5147201A (en) | Ultra-low pollutant emissions radiant gas burner with stabilized porous-phase combustion | |
US5800156A (en) | Radiant burner with a gas-permeable burner plate | |
WO2011057897A1 (en) | Multiscreen radiant burner | |
US7038227B2 (en) | Infrared emitter embodied as a planar emitter | |
CA2475955A1 (en) | Infrared radiator embodied as a surface radiator | |
US11255538B2 (en) | Radiant infrared gas burner | |
US3492986A (en) | Directional beamed radiant heaters | |
EP3598000B1 (en) | Gas fired radiant emitter comprising a radiant screen | |
JPH0328608A (en) | Burner plate | |
WO2011147654A1 (en) | Burner element having local differences in physical properties | |
CN114667416A (en) | Infrared radiation emitter | |
JPH0328610A (en) | Burner plate |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request |
Effective date: 20140617 |
|
FZDE | Discontinued |
Effective date: 20170704 |