WO1991011657A1 - Surface combustion burner - Google Patents
Surface combustion burner Download PDFInfo
- Publication number
- WO1991011657A1 WO1991011657A1 PCT/JP1991/000122 JP9100122W WO9111657A1 WO 1991011657 A1 WO1991011657 A1 WO 1991011657A1 JP 9100122 W JP9100122 W JP 9100122W WO 9111657 A1 WO9111657 A1 WO 9111657A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- combustion
- burner
- stainless steel
- gas
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/12—Radiant burners
- F23D14/18—Radiant burners using catalysis for flameless combustion
-
- 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
- F23D14/16—Radiant burners using permeable blocks
-
- 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
Definitions
- the present invention relates to a surface combustion burner, and in particular, is constituted by laminating a combustion-resistant material layer such as a ceramic material and a support layer such as a metal fiber mat for forming a gas combustion region.
- the present invention relates to a multi-layer surface burning burner.
- infrared heating devices that are expected to be used in a wide range of fields, such as cooking foods, heating and drying painted objects, as one of the technologies that use inexpensive, high-calorie gas fuel as the heat source.
- Surface burning burners are known. .
- the surface combustion burner efficiently converts the thermal energy of the combustion gas, which is mostly removed by convection in normal combustion, into radiant heat, and is one of air-permeable plate materials (hereinafter referred to as burner plate).
- burner plate air-permeable plate materials
- a mixture of premixed air and gaseous fuel is supplied from the side, and the mixture is burned by the surface on the other side, thereby heating the surface of the burner plate itself and releasing radiant heat to it. Is performed. Therefore, in the surface combustion burner, the flame adheres to the surface of the burner plate, or Gas combustion is maintained in the intruded state, and radiant heat is radiated from the flame and the surface layer of the burner plate heated to the red heat state.
- Fig. 3 is a schematic diagram showing the structure of an infrared heater used at an outdoor work site as an example of a surface burning burner device using a burner plate made of stainless steel fiber mat. Is shown in cross section.
- the burner plate m is made of stainless steel (JIS-SUS316) long fiber with a diameter of 20 ⁇ m and a length of about 50 mm in a mat shape. It is composed of a 5-mra-thick stainless steel fiber mill obtained by refining long fibers with each other.
- the surface layer m 1 is a gas combustion region, and this gas combustion region is a radiant heat emission portion.
- the burner body K on which the burner plate m is mounted has a gas nozzle N, a solenoid valve SV, a fuel gas containing a fuel gas cylinder T. a supply system, and a blower.
- An air supply system containing F is connected.
- a spark electrode S for ignition is provided opposite to the lower end of the burner plate m, and the control device fi C operates the solenoid valve SV by operating the switch.
- blower F and at the same time, apply a high voltage in the form of a spike between the spark electrode S and the burner plate m to generate a discharge spark, and ignite the gas-air mixture on the burner plate m surface.
- the components described above are mounted on a movable base B provided with wheels.
- the solenoid valve SV is opened, fuel gas is injected from the nozzle N, and the blower F is started to supply air. Then, in the burner body K, the fuel gas and the air are mixed and flow to the burner plate m, pass through it, and ooze out from the surface layer m 1 to the outside. On the other hand, a spark is generated between the spark electrode S to which the high voltage is applied and the burner plate m, and the air-gas mixture leached into this part is ignited by the spark, and the flame is immediately burned to the burner plate m. Combustion operation starts after spreading over the entire surface Is done.
- the gas supply amount and the air supply amount must be strictly controlled. That is, the ratio (mixing ratio) between the gas supply amount and the air supply amount is assumed to be approximately the chemical reaction-stoichiometric ratio, and the flow rate of the gas-air mixture passing through the burner plate m is fire. It is determined within a range that does not leave the surface of m. As a result, stable combustion is maintained in the surface layer m1 of the burner plate m, and the surface layer m1 becomes red-hot, and an amount of radiant heat substantially depending on the surface temperature of the surface layer m1 is radiated. -[Problems to be solved by the invention]
- FIG. 4 shows the temperature distribution in the thickness direction of the burner plate m when the conventional surface combustion burner performs a normal operation.
- the horizontal axis is the depth position D [mm] inside the burner plate m with the origin (0) at the surface of the surface layer ml, and the vertical axis is the temperature T.
- the temperature at the surface layer m 1 of the burner plate m is approximately This is a harsh environment for this type of stainless steel fiber mat, which has reached 1200 ° C, and it is desired to keep the service temperature below about 800 ° C.
- the stainless steel fiber mat itself is a material having relatively low thermal conductivity and is constantly cooled by the unburned gas-air mixture passing through it. The temperature drops sharply as it approaches the backside from the surface, and in fact in Fig. 4 it is 800 ° C or less at a position only 1 mni from the surface of the surface layer ml. Is the temperature that the stainless steel fiber mat can withstand sufficiently.
- the inventors of the surface portion m 1 of the burner plate m burning resistance material for example A i 2 0 3 Se la Mi click off ⁇ Lee heat materials matte the bar was sintered Replacement, the remaining part, that is, the back side except the surface layer part mI— is used as the support layer of the stainless steel fiber mat, and the heat-resistant material mat and the stainless steel fiber mat are sintered.
- stainless steel off done by I Ri attempt to burner plate having a two-layer structure Te bonded les in
- the main object of the present invention is to improve the heat resistance of the Pana-plate by forming the surface layer of a flame-resistant material, and to improve the heat resistance of the combustion-resistant material layer without impairing the uniformity of gas combustion on the combustion surface.
- An object of the present invention is to provide a long-life surface-fired burner in which a steel fiber mat layer is firmly joined.
- a surface combustion burner according to the basic concept of the present invention, a first layer formed of a material having combustion resistance and forming a gas combustion zone, and a first layer that supplies gas to the first layer and supports the first layer A second layer, and a third layer that joins the first layer and the second layer to both layers, wherein the third layer is a fire-resistant yarn with respect to the first layer. It is characterized by being stitched and joined to the second layer by sintering. Things.
- the first layer is made of ceramic cross.
- the combustion-resistant yarn is made of a heat-resistant metal wire, and the heat-resistant metal wire forms a perforation by a sewing machine and is connected to the first layer.
- the third layer is stitched.
- the first layer is made of a flame-resistant material such as a ceramic fiber mat
- the second layer is generally made of stainless steel in consideration of strength and economy. Steel fiber mat adopted
- the first layer is stitched and joined to the third layer, and the second layer is joined to this third layer by sintering, so that these three layers are firmly joined to each other.
- the third layer is a material that is easy to sinter with the second layer, for example, a material made of the same stainless steel, and the second layer is superimposed on the third layer after being sewn with the first layer and sintered. Better bonding.
- the first layer has a certain thickness
- the second layer and the third layer are separated from the high-temperature / combustion surface by the thickness of the first layer. So they are not directly exposed to the high temperatures of gas combustion.
- Ma -Also since the second and third layers are joined by sintering, there is no hole that 'penetrates' the burner plate and no heat-resistant member, so the flow rate and combustion of the air-gas mixture on the combustion surface The uniformity of the state is maintained.
- the first layer is made of various heat-resistant materials, such as a ceramic fiber mat, a high-melting-point metal fiber mat, or a woven cloth or pile cloth using a similar material. Adopted, but it is desirable to make the porosity equal to the material of the second layer and the third layer, or to avoid a step or sudden change in the porosity at each joint. .
- the yarn used for sewing the first layer and the third layer is a material that is resistant to combustion, such as Fe-25 25Cr-53 ⁇ 4 / U-2Co Kanthal (Kanthal) wire.
- a heat-resistant metal wire such as, for example, a twisted yarn of ceramic fiber material or a green wire material can be used, but the thickness of these yarns is the minimum necessary in terms of strength from the viewpoint of uniform combustion. It is desirable to select
- the first layer is made of ceramic cross
- the ceramic cloth is easier to handle than ceramic fiber mat and the like, and collapse and collapse due to sewing are generated.
- the first and third layers can be easily joined using, for example, an ordinary industrial sewing machine or the like.
- the burner plate surface layer which is the gas combustion region, is composed of the first layer of the combustion-resistant material, so the oxidation deterioration of the burner plate progresses slowly. Also, the first layer is stitched to the third layer. Secondly, since the third layer is firmly joined by sintering, it is easy to manufacture and handle the burner plate and surface burning burner. The partial oxidation deterioration of the burner plate does not easily occur. Therefore, the life of the burner plate can be extended, the utilization rate of the burner plate can be improved, and the operating cost of the combustion device using the burner plate can be reduced.
- the first layer and the third layer are joined by sewing, there is no need to consider matching such as the sintering temperature difference and the affinity between materials as in the case of sintering. Material selection is possible.
- FIG. 1a is a front view showing a configuration of a surface combustion burner according to an embodiment of the present invention.
- FIG. 1b is a partially enlarged sectional view.
- FIG. 2 is a diagram showing the relationship between the operating conditions of the surface combustion burner according to the embodiment of the present invention and the temperature of each layer interface of the burner plate.
- the horizontal axis represents the equivalence ratio ⁇ (actual fuel air ratio Z theoretical fuel The air ratio) and the vertical axis indicates the temperature T [t:].
- FIG. 3 is a schematic diagram showing an example of the structure of a heating device for outdoor work as an application example of a conventional surface combustion burner.
- Fig. 4 is a diagram showing the temperature distribution of a conventional surface-burning burner in a cross section of one stainless steel fiber mat.
- the horizontal axis represents the inside of the burner plate whose origin (0) is the surface of the surface layer.
- the depth position D [mm], and the vertical axis shows the temperature T [° C].
- the A 1 2 0 3 canceler mission-Kukuro scan 1 of the first layer should constitute the surface layer portion, the support layer Stainless steel fiber as the second layer to be composed of--mat 2 and the third layer for interposing the joining of the two layers between the first and second layers It is equipped with a three-layered Pana plate M made of stainless steel fiber 3.
- the first layer ceramic cloth 1 and the third layer stainless steel fiber mat 3 are sewn together with Kanthal wire 4 as described later in detail, and the second layer is joined to the second layer.
- the third layer is joined by sintering stainless steel fiber mats 2 and 3 of the same material.
- a 1 2 0 3 Se la mission-Amblyseius loss 1 of the first layer is a nonwoven 'fabric having a thickness of 1-2 leakage consists Alpha 1 2 0 3 long fibers having a diameter of 8 ⁇ ⁇ ,
- the second layer And the third layer stainless steel fins 2 and 3 are long fibers of stainless steel (JIS-SUS316) with a diameter of 20 ⁇ 1 and a length of about 501! 1! 11.
- the long fibers are bonded together by sintering, and the thickness of each is 4 mm for the mat 2 and 0.5 mm for the mat 3. is there.
- FIG. 2 shows the relationship between the interface temperature of each layer of the burner plate M and the equivalent ratio ⁇ ⁇ (actual fuel air ratio) of the gas-air mixture in the surface combustion burner of this embodiment.
- the typical flow rate of the mixture is 15 cm / -sec and the fuel gas is methane (CH 4 ).
- Curve T ms is A 1 2 0 3 canceler mission-Kukurosu 1 of the temperature of the surface
- the curve T mb is A 1 2 0 3 canceler mission-Amblyseius loss 1 backside i.e. the interface temperature between the stainless steel off Aibamatsu DOO 3
- Curve md indicates the temperature of the interface between stainless steel fiber mats 2 and 3.
- the progress of oxidation of the stainless steel fiber mats 2 and 3 is slowed down, and the burner plate life, which was about 100 hours in the past, reaches 50,000 hours even under the maximum load operation in the embodiment.
- the stainless steel fiber mats 2 and 3 were joined by sintering, there was no flame emission on the stitch pattern on the burning surface during operation, and the uniformity of surface combustion was improved.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Gas Burners (AREA)
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP91903697A EP0465679B1 (en) | 1990-01-31 | 1991-01-31 | Surface combustion burner |
DE69127781T DE69127781T2 (de) | 1990-01-31 | 1991-01-31 | Brenner mit oberflächenverbrennung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018956A JPH0676841B2 (ja) | 1990-01-31 | 1990-01-31 | 表面燃焼バーナ |
JP2/18956 | 1990-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991011657A1 true WO1991011657A1 (en) | 1991-08-08 |
Family
ID=11986102
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1991/000122 WO1991011657A1 (en) | 1990-01-31 | 1991-01-31 | Surface combustion burner |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0465679B1 (ja) |
JP (1) | JPH0676841B2 (ja) |
DE (1) | DE69127781T2 (ja) |
WO (1) | WO1991011657A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5205731A (en) * | 1992-02-18 | 1993-04-27 | Battelle Memorial Institute | Nested-fiber gas burner |
AT411106B (de) * | 2000-03-22 | 2003-09-25 | Wienerberger Ziegelind | Wagen zum transport von keramikrohlingen |
EP3118520B1 (en) * | 2005-08-05 | 2024-03-13 | Cascade Designs, Inc. | High efficiency radiant burner with heat exchanger option |
WO2018180915A1 (ja) * | 2017-03-27 | 2018-10-04 | Jfeスチール株式会社 | 面燃焼バーナ、複合バーナ、および焼結機用点火装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50148639U (ja) * | 1974-05-27 | 1975-12-10 | ||
JPH0328611A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
JPH0328609A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
JPH0328610A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
JPH0328608A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
JPH0328612A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1368084A (en) * | 1972-08-08 | 1974-09-25 | Cooperheat | Surface combustion burner |
JPS6060525U (ja) * | 1983-10-04 | 1985-04-26 | 東京瓦斯株式会社 | 予混合燃焼ガスバ−ナ |
-
1990
- 1990-01-31 JP JP2018956A patent/JPH0676841B2/ja not_active Expired - Lifetime
-
1991
- 1991-01-31 EP EP91903697A patent/EP0465679B1/en not_active Expired - Lifetime
- 1991-01-31 DE DE69127781T patent/DE69127781T2/de not_active Expired - Fee Related
- 1991-01-31 WO PCT/JP1991/000122 patent/WO1991011657A1/ja active IP Right Grant
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50148639U (ja) * | 1974-05-27 | 1975-12-10 | ||
JPH0328611A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
JPH0328609A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
JPH0328610A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
JPH0328608A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
JPH0328612A (ja) * | 1989-06-27 | 1991-02-06 | Nkk Corp | バーナ板 |
Non-Patent Citations (1)
Title |
---|
See also references of EP0465679A4 * |
Also Published As
Publication number | Publication date |
---|---|
EP0465679B1 (en) | 1997-10-01 |
DE69127781D1 (de) | 1997-11-06 |
EP0465679A1 (en) | 1992-01-15 |
EP0465679A4 (en) | 1993-02-10 |
JPH0676841B2 (ja) | 1994-09-28 |
JPH03225105A (ja) | 1991-10-04 |
DE69127781T2 (de) | 1998-04-23 |
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