CN113503540A - Integrated thick-thin burner - Google Patents
Integrated thick-thin burner Download PDFInfo
- Publication number
- CN113503540A CN113503540A CN202110938938.8A CN202110938938A CN113503540A CN 113503540 A CN113503540 A CN 113503540A CN 202110938938 A CN202110938938 A CN 202110938938A CN 113503540 A CN113503540 A CN 113503540A
- Authority
- CN
- China
- Prior art keywords
- flame
- base plate
- plate part
- notch
- inlet channel
- 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.)
- Withdrawn
Links
Images
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
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23D—BURNERS
- F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
- F23D14/46—Details, e.g. noise reduction 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Gas Burners (AREA)
Abstract
The invention provides an integrated rich-lean burner.A fire grate body comprises a fire grate base plate part, wherein the fire grate base plate part is provided with a first fuel gas inlet channel for lean flame and a second fuel gas inlet channel for generating rich flame, the volume of the first fuel gas inlet channel is smaller than that of the second fuel gas inlet channel, and the side wall of the first fuel gas inlet channel is provided with at least one air outlet hole; a dense flame hole is formed between the top of the flame-proof base plate part and the side of the fire row base plate part, and the dense flame hole is communicated with the air outlet hole; the boss portion is welded in the fire grate base plate portion, and the burning chamber of flame-proof base plate portion is placed in the fire hole base plate portion, the second gas inlet channel with the burning chamber is linked together to make the assembly back body, fire hole strip, flame-proof board constitute the integral type combustor. Compared with the prior art, the boss portion of depressed center portion, planar notch, flame-proof base plate portion sets up, with thick, light flame integration at a fire row body, has that combustion stability is good, be convenient for assembly, the assembly required low advantage of precision.
Description
Technical Field
The invention relates to an integrated rich-lean burner.
Background
In the related prior art, the thick and thin fire grate structure is a split structure, as shown in fig. 1 and fig. 2, the first row from the left in the figure is a thick fire grate, and the second row is a thin fire grate, so that the thick and thin fire grates are arranged at intervals in sequence, and the fire grate only forms a complete thick and thin burner; the structure has higher assembly precision requirement, the assembly process is difficult to control, the combustion stability is poor, and overhigh CO and resonance easily occur in the combustion process due to assembly deviation during use.
Therefore, the invention provides an integrated rich-lean burner.
Disclosure of Invention
In view of the above problems in the prior art, the present invention is directed to an integrated thick and thin burner having advantages of good combustion stability, easy assembly and low assembly precision.
The purpose of the invention can be realized by the following technical scheme:
an integrated dense-lean burner comprises a fire grate body, a fire hole strip and a flame protection plate, wherein the fire grate body comprises a fire grate base plate part and a recessed table part arranged on the fire grate base plate part, the fire grate base plate part is provided with a first fuel gas inlet channel for light flame and a second fuel gas inlet channel for generating dense flame, the volume of the first fuel gas inlet channel is smaller than that of the second fuel gas inlet channel, and the side wall of the first fuel gas inlet channel is provided with at least one air outlet;
the fire hole strip comprises a fire hole base plate part and a planar notch arranged on the fire hole base plate part, and the sunken table part is tightly embedded into the notch; the flame holding plate comprises a flame holding base plate part with a combustion cavity and an inwards concave boss part arranged on the flame holding base plate part, the lower part of the flame holding base plate part is clamped and embedded in the flame exhaust base plate part above the second fuel gas inlet channel along the longitudinal direction, a dense flame hole is formed between the top of the flame holding base plate part and the side of the flame exhaust base plate part, and the dense flame hole is communicated with the air outlet hole;
the boss portion weld in base plate portion is arranged to the fire, place the burning chamber of flame protection base plate portion in the fire door base plate portion in, second gas inlet channel with the burning chamber is linked together to make the assembly back body, fire door strip, flame protection plate constitute the integral type combustor.
The integrated rich-lean burner is characterized in that: the surface of the fire hole substrate part is provided with a plurality of first notch parts;
wherein a part of the first notch part is arranged above the notch, the other part of the first notch part is arranged below the notch, and the first notch parts are all penetrated through the side wall edge of the length direction of the fire hole base plate part.
The integrated rich-lean burner is characterized in that: the first notch parts located above the notches and the first notch parts located below the notches are four, and the adjacent two first notch parts are arranged at intervals along the length direction of the fire hole base plate part at equal intervals.
The integrated rich-lean burner is characterized in that: the surface of the flame-proof base plate part is provided with a plurality of second notch parts;
wherein a part of the second notch portion is disposed on the front surface of the flame-proof base plate portion above the boss portion, and another part of the second notch portion is disposed on the rear surface of the flame-proof base plate portion above the boss portion, and the second notch portions are disposed at intervals with the side walls in the longitudinal direction of the flame-proof base plate portion.
The integrated rich-lean burner is characterized in that: the second notch parts located on the front surface of the flame-proof base plate part and the second notch parts located on the rear surface of the flame-proof base plate part are four in number, and the two adjacent second notch parts are arranged at intervals in the length direction of the flame-proof base plate part at equal intervals.
The integrated rich-lean burner is characterized in that: the number of the air outlet holes is three, and the three air outlet holes are alternately arranged on the side wall of the first gas inlet channel.
The integrated rich-lean burner is characterized in that: the embedded part between the flame-proof base plate part and the fire row base plate part is fixed together by welding.
The integrated rich-lean burner is characterized in that: the top of the flame-proof base plate part is provided with a plurality of fixing plate parts, two adjacent fixing plate parts are arranged at intervals, and the front end and the rear end of each fixing plate part are respectively connected with the front surface and the rear surface of the flame-proof base plate part above the combustion cavity.
The integrated rich-lean burner is characterized in that: the fire grate body is an integrated piece made of stainless steel.
The integrated rich-lean burner is characterized in that: the fire door strip is an integrated piece made of stainless steel, and the flame-proof plate is an integrated piece made of stainless steel.
As described above, the integrated rich-lean burner according to the present invention has the following advantageous effects:
after the integrated thick and thin burner is utilized, compared with the prior art, due to the adoption of the structure, the arrangement of the concave table part, the planar notch and the convex table part of the flame-holding base plate part can ensure that the fire grate body, the fire mouth strips and the flame-holding plates form the integrated burner after assembly, the high-precision requirement required by assembly is reduced, the assembly error can be reduced, the overhigh CO and resonance generated in the combustion process due to the assembly deviation of the existing structure can be prevented, namely, thick and thin flames are integrated into one fire grate body, and the integrated thick and thin burner has the advantages of good combustion stability, convenience in assembly and low assembly precision requirement.
The present invention will be further described with reference to the following embodiments.
Drawings
FIG. 1 is a diagram of a thick and thin fire grate structure in the prior art;
FIG. 2 is a diagram illustrating the effect of generating a thick flame by a thick and thin fire grate structure in the prior art;
FIG. 3 is a perspective view of an integrated rich-lean burner;
FIG. 4 is a front view of an integrated rich-lean burner;
FIG. 5 is a side sectional view of an integrated rich-lean burner;
FIG. 6 is an enlarged view of the tight-bonding structure at A in FIG. 5;
FIG. 7 is an enlarged view of the tight-bonding structure at B in FIG. 5;
FIG. 8 is an exploded view of an integrated rich-lean burner;
FIG. 9 is a graph illustrating the effect of a rich flame produced using an integrated rich-lean burner of the present application.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions of the present disclosure, so that the present disclosure is not limited to the technical essence, and any modifications of the structures, changes of the ratios, or adjustments of the sizes, can still fall within the scope of the present disclosure without affecting the function and the achievable purpose of the present disclosure. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications. The specific structure can be explained with reference to the drawings of the patent application.
In the following embodiments, the left side of the paper surface is the left direction, the right side of the paper surface is the right direction, the upper side of the paper surface is the upper direction, the lower side of the paper surface is the lower direction, the front side perpendicular to the paper surface is the front direction, and the rear side perpendicular to the paper surface is the rear direction.
The invention provides an integrated rich-lean burner, please refer to fig. 3 to fig. 9, which includes a fire grate body 1, fire hole strips 2 and a flame protection plate 3, wherein the fire grate body 1 includes a fire grate base plate portion 10 and a recessed table portion 11 disposed on the fire grate base plate portion 10, the fire grate base plate portion 10 has a first gas inlet channel 10a for a lean flame and a second gas inlet channel 10b for generating a rich flame, the volume of the first gas inlet channel 10a is smaller than that of the second gas inlet channel 10b, and the sidewall of the first gas inlet channel 10a is provided with at least one gas outlet hole 100;
the fire hole strip 2 comprises a fire hole base plate part 20 and a planar notch 21 arranged on the fire hole base plate part 20, and the concave table part 11 is tightly embedded in the notch 21; the flame holding plate 3 comprises a flame holding base plate part 30 with a combustion chamber 300 and an inwardly concave boss part 31 arranged on the flame holding base plate part 30, the lower part of the flame holding base plate part 30 is clamped and embedded in the flame exhaust base plate part 10 above the second gas inlet channel 10b along the longitudinal direction, a rich flame hole 310 is formed between the top of the flame holding base plate part 30 and the side of the flame exhaust base plate part 10, and the rich flame hole 310 is communicated with the gas outlet hole 100;
the boss portion 31 is welded to the fire grate base plate portion 10, the fire hole base plate portion 20 is arranged in the combustion chamber 300 of the flame-proof base plate portion 30, and the second fuel gas inlet channel 10b is communicated with the combustion chamber 300, so that the fire grate body 1, the fire hole strips 2 and the flame-proof plate 3 form an integrated burner after assembly. It should be noted that, the arrangement of the recessed table portion 11, the planar notch 21, and the boss portion 31 of the flame-proof base plate portion 30 enables the fire grate body 1, the fire hole strips 2, and the flame-proof plate 3 to form an integrated burner after assembly, thereby reducing the high precision requirement required by assembly, reducing the assembly error, preventing the CO generated in the combustion process caused by the assembly deviation of the existing structure from being too high and resonating, i.e. integrating the thick flame and the thin flame into one fire grate body 1, and having the advantages of good combustion stability, convenient assembly, and low assembly precision requirement.
As shown in fig. 3 and 8, in the present embodiment, a plurality of first notch portions 200 are provided on the surface of the fire hole substrate portion 20;
one part of the first notch portion 200 is disposed above the notch 21, the other part of the first notch portion 200 is disposed below the notch 21, and the first notch portion 200 penetrates through the side wall of the fire hole base plate portion 20 in the length direction. The first notch part 200 is arranged to block the mixed gas (mixed gas and air) from the first gas inlet channel 10a, so as to reduce the jet velocity of the gas and help to assist the stable combustion of flame; meanwhile, the root shape of the flame can be improved, and the sufficiency of gas combustion is improved.
In the present embodiment, as shown in fig. 3 and 8, four first notch portions 200 are provided above the notch 21 and four first notch portions 200 are provided below the notch 21, and two adjacent first notch portions 200 are arranged at equal intervals along the length direction of the fire hole base plate portion 20.
As shown in fig. 8, in the present embodiment, a plurality of second notch portions 301 are provided on the surface of the flame holding substrate portion 30;
wherein a part of the second notch portion 301 is disposed on the front surface of the flame holding base plate portion 30 above the boss portion 31, another part of the second notch portion 301 is disposed on the rear surface of the flame holding base plate portion 30 above the boss portion 31, and the second notch portions 301 are disposed at intervals with respect to the side walls of the flame holding base plate portion 30 in the longitudinal direction. The second notch part 30 is arranged to block the mixed gas (mixed gas and air) from the second gas inlet channel 10b, so as to reduce the jet velocity of the gas and help to assist the stable combustion of flame; meanwhile, the root shape of the flame can be improved, and the sufficiency of gas combustion is improved.
As shown in fig. 8, in the present embodiment, four second notch portions 301 are provided on the front surface of the flame holding base plate portion 30 and four second notch portions 301 are provided on the rear surface of the flame holding base plate portion 30, and two adjacent second notch portions 301 are arranged at equal intervals in the longitudinal direction of the flame holding base plate portion 30.
Referring to fig. 8, in the present embodiment, there are three outlet holes 100, and the three outlet holes 100 are alternately arranged on the side wall of the first gas inlet channel 10 a.
As shown in fig. 3, 4, and 8, in the present embodiment, the fitting portion between the flame holding base plate portion 30 and the flame row base plate portion 10 is fixed by welding.
As shown in fig. 8, in the present embodiment, a plurality of fixing plate portions 302 are provided on the top of the flame holding base plate portion 30, two adjacent fixing plate portions 302 are alternately arranged, and the front and rear end portions of the fixing plate portions 302 are respectively connected to the front and rear surfaces of the flame holding base plate portion 302 above the combustion chamber 3. Set up fixed plate portion 302, its effect is the combustor of fixed this application, and a plurality of fixed plate portion 302 simultaneously can distinguish flame, guarantees the stability of flame.
Referring to fig. 8, in the present embodiment, the fire grate body 1 is a single piece made of stainless steel. The type of stainless steel material may be 304.
Referring to fig. 8, in the present embodiment, the fire door strip 2 is an integral piece made of stainless steel, and the flame protection plate 3 is an integral piece made of stainless steel. The type of stainless steel material may be 304.
It should be noted that, as shown in fig. 3 to fig. 9, the working principle of the integrated rich-lean burner of the present invention is that the fuel gas is ejected from the fuel gas pipeline, and the fuel gas enters the first fuel gas inlet channel 10a and the second fuel gas inlet channel 10b, wherein because the volume of the first fuel gas inlet channel 10a is smaller than the volume of the second fuel gas inlet channel 10b, the air injected into the first fuel gas inlet channel 10a is less when the fuel gas is ejected, and after the fuel gas and the air are mixed in the first fuel gas inlet channel 10a, the mixed gas flows out from the air outlet 100 and reaches the rich flame holes 310 to be combusted to form rich flames; in addition, the fuel gas is injected into the second fuel gas inlet channel 10b and then is injected into a large amount of air, and after the fuel gas and the air are mixed in the second fuel gas inlet channel 10b, the mixed gas at the position reaches the fire bar port 2 to be combusted, so that light flame is formed; the gas at the thick flame is more and less, the air at the light flame is more and less, and meanwhile, the gas which is not fully combusted at the thick flame and the redundant air at the light flame are subjected to secondary combustion, so that the gas is fully combusted, and the combustion efficiency is improved; meanwhile, the light flame and the thick flame are mutually influenced, the stability of the flame is increased, the height of the flame is reduced, and the generation of nitrogen oxides is further reduced, so that the discharged gas meets the requirement of environmental protection.
As described above, the integrated rich-lean burner according to the present invention has the following advantageous effects:
after the integrated thick and thin burner is utilized, compared with the prior art, due to the adoption of the structure, the arrangement of the concave table part, the planar notch and the convex table part of the flame-holding base plate part can ensure that the fire grate body, the fire mouth strips and the flame-holding plates form the integrated burner after assembly, the high-precision requirement required by assembly is reduced, the assembly error can be reduced, the overhigh CO and resonance generated in the combustion process due to the assembly deviation of the existing structure can be prevented, namely, thick and thin flames are integrated into one fire grate body, and the integrated thick and thin burner has the advantages of good combustion stability, convenience in assembly and low assembly precision requirement.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. An integral type rich and lean burner which characterized in that: the flame row comprises a flame row body, a flame opening strip and a flame protection plate, wherein the flame row body comprises a flame row base plate part and a sunken table part arranged on the flame row base plate part, the flame row base plate part is provided with a first fuel gas inlet channel for light flame and a second fuel gas inlet channel for generating thick flame, the volume of the first fuel gas inlet channel is smaller than that of the second fuel gas inlet channel, and the side wall of the first fuel gas inlet channel is provided with at least one air outlet;
the fire hole strip comprises a fire hole base plate part and a planar notch arranged on the fire hole base plate part, and the sunken table part is tightly embedded into the notch; the flame holding plate comprises a flame holding base plate part with a combustion cavity and an inwards concave boss part arranged on the flame holding base plate part, the lower part of the flame holding base plate part is clamped and embedded in the flame exhaust base plate part above the second fuel gas inlet channel along the longitudinal direction, a dense flame hole is formed between the top of the flame holding base plate part and the side of the flame exhaust base plate part, and the dense flame hole is communicated with the air outlet hole;
the boss portion weld in base plate portion is arranged to the fire, place the burning chamber of flame protection base plate portion in the fire door base plate portion in, second gas inlet channel with the burning chamber is linked together to make the assembly back body, fire door strip, flame protection plate constitute the integral type combustor.
2. An integrated rich-lean burner as claimed in claim 1, wherein: the surface of the fire hole substrate part is provided with a plurality of first notch parts;
wherein a part of the first notch part is arranged above the notch, the other part of the first notch part is arranged below the notch, and the first notch parts are all penetrated through the side wall edge of the length direction of the fire hole base plate part.
3. An integrated rich-lean burner as claimed in claim 2, wherein: the first notch parts located above the notches and the first notch parts located below the notches are four, and the adjacent two first notch parts are arranged at intervals along the length direction of the fire hole base plate part at equal intervals.
4. An integrated rich-lean burner as claimed in claim 1, wherein: the surface of the flame-proof base plate part is provided with a plurality of second notch parts;
wherein a part of the second notch portion is disposed on the front surface of the flame-proof base plate portion above the boss portion, and another part of the second notch portion is disposed on the rear surface of the flame-proof base plate portion above the boss portion, and the second notch portions are disposed at intervals with the side walls in the longitudinal direction of the flame-proof base plate portion.
5. An integrated rich-lean burner as claimed in claim 4, wherein: the second notch parts located on the front surface of the flame-proof base plate part and the second notch parts located on the rear surface of the flame-proof base plate part are four in number, and the two adjacent second notch parts are arranged at intervals in the length direction of the flame-proof base plate part at equal intervals.
6. An integrated rich-lean burner as claimed in claim 1, wherein: the number of the air outlet holes is three, and the three air outlet holes are alternately arranged on the side wall of the first gas inlet channel.
7. An integrated rich-lean burner as claimed in any one of claims 1 to 6, wherein: the embedded part between the flame-proof base plate part and the fire row base plate part is fixed together by welding.
8. An integrated rich-lean burner as claimed in any one of claims 1 to 6, wherein: the top of the flame-proof base plate part is provided with a plurality of fixing plate parts, two adjacent fixing plate parts are arranged at intervals, and the front end and the rear end of each fixing plate part are respectively connected with the front surface and the rear surface of the flame-proof base plate part above the combustion cavity.
9. An integrated rich-lean burner as claimed in any one of claims 1 to 6, wherein: the fire grate body is an integrated piece made of stainless steel.
10. An integrated rich-lean burner as claimed in any one of claims 1 to 6, wherein: the fire door strip is an integrated piece made of stainless steel, and the flame-proof plate is an integrated piece made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110938938.8A CN113503540A (en) | 2021-08-16 | 2021-08-16 | Integrated thick-thin burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110938938.8A CN113503540A (en) | 2021-08-16 | 2021-08-16 | Integrated thick-thin burner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113503540A true CN113503540A (en) | 2021-10-15 |
Family
ID=78016383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110938938.8A Withdrawn CN113503540A (en) | 2021-08-16 | 2021-08-16 | Integrated thick-thin burner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113503540A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115789641A (en) * | 2022-12-27 | 2023-03-14 | 广东金美达实业有限公司 | Thick and thin combustor and gas water heater using same |
| CN116085794A (en) * | 2022-12-26 | 2023-05-09 | 广东金美达实业有限公司 | Integrated shade burner and assembly method thereof |
-
2021
- 2021-08-16 CN CN202110938938.8A patent/CN113503540A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116085794A (en) * | 2022-12-26 | 2023-05-09 | 广东金美达实业有限公司 | Integrated shade burner and assembly method thereof |
| CN116085794B (en) * | 2022-12-26 | 2023-09-12 | 广东金美达实业有限公司 | Integrated shade burner and assembly method thereof |
| CN115789641A (en) * | 2022-12-27 | 2023-03-14 | 广东金美达实业有限公司 | Thick and thin combustor and gas water heater using same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113503540A (en) | Integrated thick-thin burner | |
| JP4743548B2 (en) | Combustion device | |
| JP2003269705A (en) | Combustion device | |
| KR20040035369A (en) | Multi-Control Possible The Gas Burner | |
| JP3671922B2 (en) | Combustion equipment | |
| CN215892350U (en) | Staged combustion device | |
| KR20120066131A (en) | Gas burner | |
| JP5283568B2 (en) | Burner and combustor using the same | |
| CN108343960B (en) | Thick and thin flame burner for gas water heater | |
| JP2682447B2 (en) | Combustion equipment | |
| JP4803430B2 (en) | Combustion device and combustion unit | |
| JP2002323205A (en) | Lean-rich combustion device | |
| EP4036473A1 (en) | Low-nitrogen oxide burner | |
| JP2002048314A (en) | Combustion apparatus | |
| JPH1163417A (en) | Two stage combustor | |
| JP3244812B2 (en) | Combustion equipment | |
| JP3150228B2 (en) | Combustion equipment | |
| JPH062818A (en) | Combustion device | |
| WO1996023172A1 (en) | Burner and burner unit | |
| JPH09203509A (en) | Burner for flat gas equipment | |
| JPH07103424A (en) | Thick and thin fuel combustion device | |
| JPH0627569B2 (en) | Gas burner | |
| KR920010478B1 (en) | Forced blast type burner | |
| JPH08200630A (en) | Straightening plate for burner | |
| JPH04151412A (en) | Low nitrogen oxides burner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20211015 |