CN104807010A - Low-NOx burner for wall-hung stove - Google Patents
Low-NOx burner for wall-hung stove Download PDFInfo
- Publication number
- CN104807010A CN104807010A CN201510217308.6A CN201510217308A CN104807010A CN 104807010 A CN104807010 A CN 104807010A CN 201510217308 A CN201510217308 A CN 201510217308A CN 104807010 A CN104807010 A CN 104807010A
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- CN
- China
- Prior art keywords
- burner
- combustion gas
- dense
- light
- ejecting port
- 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.)
- Pending
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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
- F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
- F23D14/04—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone induction type, e.g. Bunsen burner
-
- 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
-
- 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
- F23D14/62—Mixing devices; Mixing tubes
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
The invention relates to a low-NOx burner for a wall-hung stove, which is mainly used for burning in a negative-pressure condition. The burner comprises a burner main plate, wherein the lower part of the burner main plate is provided with injection openings; the upper part of the burner main plate is provided with a flame tunnel; the injection openings are connected with the flame tunnel through injection pipes; two injection openings are arranged and are respectively a dense fuel gas injection opening (4) and a thin fuel gas injection opening (1); the flame tunnel is provided with at least three parallel flame opening grooves, wherein the flame opening grooves distributed on the two sides are dense flame openings (2), the flame opening distributed in the middle is a thin flame opening (3); the dense fuel gas injection opening (4) is connected with the dense flame openings (2) through dense fuel gas injection pipes; the thin fuel gas injection opening (1) is connected with the thin flame opening (3) through a thin fuel gas injection pipe. Compared with the prior art, the low-NOx burner for the wall-hung stove has the advantages of being simple in structure, sufficient in burning of combustion gas, little in generation of nitric oxides, wide in application range, and the like.
Description
Technical field
The present invention relates to a kind of burner for wall-hung boiler, especially relate to a kind of low nitrogen oxide burner for wall-hung boiler.
Background technology
Along with country continues to increase the dynamics of environment protection treating, continuous new standard is had to the fume emission of gas appliance and occurs, especially to NO
xdischarge, enter now American-European gas appliance and all must possess low NO
xrequirement, and China is to gas appliance NO
xemission request also started in 2012.Existing common wall-hung boiler burner can produce a large amount of NO when burning
x, to environment, even can there is acid rain and produce pathology with the respiratory system jeopardizing the mankind in this.
Chinese patent CN101603687A discloses a kind of burner of low NOx of fuel gas buring, described burner comprises induction tunnel and head distributor, the fuel gas inlet of one end of induction tunnel is connected with gas nozzle, the surrounding of fuel gas inlet is the introducing portion of primary air mouth, and the other end of induction tunnel communicates with the head distributor entrance of head distributor.This burner can there is the flame of two kinds of combustion positions, light flame can help dense flame to carry out second time burning thus can reduce the discharge of nitrogen oxide, but the structure of this burner is comparatively complicated, and the ratio of dense combustion gas and light combustion gas is difficult to regulate, and cannot reach maximum Thorough combustion.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and the low NO for wall-hung boiler under a kind of condition of negative pressure is provided
xburner.
Object of the present invention can be achieved through the following technical solutions:
A kind of low NO for wall-hung boiler
xburner, mainly burn under condition of negative pressure, described burner comprises burner mainboard, this burner mainboard bottom is provided with ejecting port, burner mainboard top is provided with fire row, described ejecting port connects fire row by induction tunnel, described ejecting port is provided with two, be respectively dense combustion gas ejecting port and light combustion gas ejecting port, described fire row is provided with at least three parallel burner grooves, wherein, the burner groove being distributed in both sides is dense burner, being distributed in middle burner groove is light burner, described dense combustion gas ejecting port connects dense burner by dense combustion gas induction tunnel, described light combustion gas ejecting port connects light burner by light combustion gas induction tunnel, during burner operation, the dense combustion gas with superfluous combustion gas enters burner from dense combustion gas ejecting port, the light combustion gas with excess air enters burner from light combustion gas ejecting port, then in dense burner and light burner, carry out first time respectively burns, then remaining superfluous combustion gas and excess air are after the mutual secondary in burner top mixes, carry out second time burning again, thus make fuel gas buring abundant, in addition, the temperature that the ignition temperature of secondary combustion gas compares ordinary combustion reduces greatly, thus effectively decrease NO
xgeneration.
Described fire row is provided with six parallel burner grooves, and wherein, two the burner grooves being distributed in both sides are dense burner, and being distributed in four middle burner grooves is light burner, thus can improve enough mixed combustion spaces for the second-time burning of deep or light combustion gas.
The burner gross area of described light burner is 320 ~ 400 square millimeters, and to ensure blast tube and the induction efficiency of light flame, wherein the area ratio of light burner and dense burner is 1.6 ~ 1.8:1.
The diameter of described light combustion gas ejecting port is 17 ~ 19mm, to guarantee that the coefficient of excess air of the light combustion gas passed into is greater than 1.5.
Described burner top is provided with multipair fins set, and this fins set is formed from middle extension of burner top two side direction respectively by two pieces of fins.
It is 5 right that described fins set is provided with, thus fire grate for burner burner is divided into 6 sections, ensures that superfluous combustion gas is abundant with mixing of excess air further.
Under burner is in the condition of sealing, described burner can also burn under positive pressure.
Compared with prior art, the present invention has the following advantages:
(1) the present invention is provided with dense combustion gas ejecting port and light combustion gas ejecting port, the ratio avoiding two kinds of pre-mixing gas combustions affects the ratio of dense combustion gas and light combustion gas due to factors such as air draught speed or air pressure, thus cause second-time burning temperature to rise and destroy combustion stability, do not reach low NO
xfume emission;
(2) dense burner is arranged in the both sides of whole burner by the present invention, and light burner is arranged in the centre of whole fire row burner, and the superfluous combustion gas of effective guarantee mixes with excess air, thus carries out second-time burning;
(3) the present invention is negative-pressure firing device, overcomes the difficult point that low nitrogen burning is only limited to pressure combustion;
(4) the present invention is guaranteeing can also be used for pressure combustion under the condition that burner seals, applied widely;
(5) structure of the present invention is simple, and sufficient combustion, effectively can reduce the generation of nitrogen oxide in burning, reach the object of energy-conserving and environment-protective.
Accompanying drawing explanation
Fig. 1 of the present inventionly faces structural representation;
Fig. 2 is plan structure schematic diagram of the present invention;
Fig. 3 is left TV structure schematic diagram of the present invention;
In figure, light combustion gas ejecting port 1, dense burner 2, light burner 3, dense combustion gas ejecting port 4, fins set 5.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
As shown in Figures 1 to 3, a kind of low NO for wall-hung boiler
xburner, burner comprises burner mainboard, the bottom of burner mainboard is provided with light combustion gas ejecting port 1 and dense combustion gas ejecting port 4 from down to up successively, the top of burner mainboard is provided with fire row, this fire row comprises and combines six parallel burner grooves by multilayer corrosion resistant plate, wherein, two the burner grooves being distributed in both sides are dense burner 2, being distributed in four middle burner grooves is light burner 3, light combustion gas ejecting port 1 is connected light burner 3 and dense burner 2 respectively by light combustion gas induction tunnel with dense combustion gas induction tunnel with dense combustion gas ejecting port 4, the diameter of light combustion gas ejecting port 1 is 17 millimeters, the gross area of light burner 3 is 320 square millimeters, the area ratio of light burner and dense burner is 1.6 ~ 1.8:1, burner top is provided with 5 pairs of fins set 5, thus fire grate for burner burner is divided into 6 sections, this fins set 5 is formed from middle extension of burner top two side direction respectively by two pieces of fins,
During burner operation, the dense combustion gas with superfluous combustion gas enters burner from dense combustion gas ejecting port 4, the light combustion gas with excess air enters burner from light combustion gas ejecting port 1, then in dense burner 2 with light burner 3, carry out first time respectively burns, then remaining superfluous combustion gas and excess air are after the mutual secondary in burner top mixes, carry out second time burning again, thus make fuel gas buring abundant, in addition, the temperature that the ignition temperature of secondary combustion gas compares ordinary combustion reduces greatly, thus effectively decreases NO
xgeneration, under burner is in the condition of sealing, described burner can also burn under positive pressure.
Embodiment 2
A kind of low NO for wall-hung boiler
xburner, burner comprises burner mainboard, the bottom of burner mainboard is provided with light combustion gas ejecting port 1 and dense combustion gas ejecting port 4 from down to up successively, the top of burner mainboard is provided with fire row, this fire row comprises and combines six parallel burner grooves by multilayer corrosion resistant plate, wherein, two the burner grooves being distributed in both sides are dense burner 2, being distributed in four middle burner grooves is light burner 3, light combustion gas ejecting port 1 is connected light burner 3 and dense burner 2 respectively by light combustion gas induction tunnel with dense combustion gas induction tunnel with dense combustion gas ejecting port 4, the diameter of light combustion gas ejecting port 1 is 19 millimeters, the gross area of light burner 3 is 400 square millimeters, burner top is provided with 5 pairs of fins set 5, thus fire grate for burner burner is divided into 6 sections, this fins set 5 is formed from middle extension of burner top two side direction respectively by two pieces of fins,
During burner operation, the dense combustion gas with superfluous combustion gas enters burner from dense combustion gas ejecting port 4, the light combustion gas with excess air enters burner from light combustion gas ejecting port 1, then in dense burner 2 with light burner 3, carry out first time respectively burns, then remaining superfluous combustion gas and excess air are after the mutual secondary in burner top mixes, carry out second time burning again, thus make fuel gas buring abundant, in addition, the temperature that the ignition temperature of secondary combustion gas compares ordinary combustion reduces greatly, thus effectively decreases NO
xgeneration, under burner is in the condition of sealing, described burner can also burn under positive pressure.
Embodiment 3
A kind of low NO for wall-hung boiler
xburner, burner comprises burner mainboard, the bottom of burner mainboard is provided with light combustion gas ejecting port 1 and dense combustion gas ejecting port 4 from down to up successively, the top of burner mainboard is provided with fire row, this fire row comprises and combines six parallel burner grooves by multilayer corrosion resistant plate, wherein, two the burner grooves being distributed in both sides are dense burner 2, being distributed in four middle burner grooves is light burner 3, light combustion gas ejecting port 1 is connected light burner 3 and dense burner 2 respectively by light combustion gas induction tunnel with dense combustion gas induction tunnel with dense combustion gas ejecting port 4, the diameter of light combustion gas ejecting port 1 is 18 millimeters, the gross area of light burner 3 is 360 square millimeters, burner top is provided with 5 pairs of fins set 5, thus fire grate for burner burner is divided into 6 sections, this fins set 5 is formed from middle extension of burner top two side direction respectively by two pieces of fins,
During burner operation, the dense combustion gas with superfluous combustion gas enters burner from dense combustion gas ejecting port 4, the light combustion gas with excess air enters burner from light combustion gas ejecting port 1, then in dense burner 2 with light burner 3, carry out first time respectively burns, then remaining superfluous combustion gas and excess air are after the mutual secondary in burner top mixes, carry out second time burning again, thus make fuel gas buring abundant, in addition, the temperature that the ignition temperature of secondary combustion gas compares ordinary combustion reduces greatly, thus effectively decreases NO
xgeneration, under burner is in the condition of sealing, described burner can also burn under positive pressure.
Claims (7)
1. the low NO for wall-hung boiler
xburner, mainly burn under condition of negative pressure, described burner comprises burner mainboard, this burner mainboard bottom is provided with ejecting port, burner mainboard top is provided with fire row, described ejecting port connects fire row by induction tunnel, it is characterized in that, described ejecting port is provided with two, be respectively dense combustion gas ejecting port (4) and light combustion gas ejecting port (1), described fire row is provided with at least three parallel burner grooves, wherein, the burner groove being distributed in both sides is dense burner (2), being distributed in middle burner groove is light burner (3), described dense combustion gas ejecting port (4) connects dense burner (2) by dense combustion gas induction tunnel, described light combustion gas ejecting port (1) connects light burner (3) by light combustion gas induction tunnel.
2. a kind of low NO for wall-hung boiler according to claim 1
xburner, is characterized in that, described fire row is provided with six parallel burner grooves, and wherein, two the burner grooves being distributed in both sides are dense burner (2), and being distributed in four middle burner grooves is light burner (3).
3. a kind of low NO for wall-hung boiler according to claim 1 and 2
xburner, is characterized in that, the burner gross area of described light burner (3) is 320 ~ 400 square millimeters, and wherein light burner (3) is 1.6 ~ 1.8:1 with the area ratio of dense burner (2).
4. a kind of low NO for wall-hung boiler according to claim 1
xburner, is characterized in that, the diameter of described light combustion gas ejecting port (1) is 17 ~ 19mm.
5. a kind of low NO for wall-hung boiler according to claim 1
xburner, is characterized in that, described burner top is provided with multipair fins set (5), and this fins set (5) is formed from middle extension of burner top two side direction respectively by two pieces of fins.
6. a kind of low NO for wall-hung boiler according to claim 5
xburner, is characterized in that, it is 5 right that described fins set (5) is provided with, thus fire grate for burner burner is divided into 6 sections.
7. a kind of low NO for wall-hung boiler according to claim 1
xburner, is characterized in that, under burner is in the condition of sealing, described burner can also burn under positive pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217308.6A CN104807010A (en) | 2015-04-30 | 2015-04-30 | Low-NOx burner for wall-hung stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510217308.6A CN104807010A (en) | 2015-04-30 | 2015-04-30 | Low-NOx burner for wall-hung stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104807010A true CN104807010A (en) | 2015-07-29 |
Family
ID=53692080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510217308.6A Pending CN104807010A (en) | 2015-04-30 | 2015-04-30 | Low-NOx burner for wall-hung stove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104807010A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642106A (en) * | 2016-11-18 | 2017-05-10 | 宁波方太厨具有限公司 | Thick light burner |
| CN108930963A (en) * | 2018-08-21 | 2018-12-04 | 上海禾森机电有限公司 | A kind of pressure combustion low-NOx combustor |
| CN108954317A (en) * | 2018-05-30 | 2018-12-07 | 上海禾森机电有限公司 | A kind of low NO of the negative pressure of wall-hung boilerxBurner |
| CN109751598A (en) * | 2019-03-14 | 2019-05-14 | 上海金巨源热能技术有限公司 | A kind of burner with four light two dense linear array fire hole cores |
| CN113654041A (en) * | 2021-07-22 | 2021-11-16 | 何俊荣 | Up-draft thick-thin burner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193834A (en) * | 1992-12-25 | 1994-07-15 | Noritz Corp | Burner |
| CN201078700Y (en) * | 2007-08-13 | 2008-06-25 | 樱花卫厨（中国）有限公司 | Combustor of low oxynitride gas water heater |
| CN201373403Y (en) * | 2009-03-17 | 2009-12-30 | 上海禾森机电有限公司 | Fire grate of low nitrogen oxygen combustor used for wall-mounted boiler |
| CN201436472U (en) * | 2009-05-25 | 2010-04-07 | 海尔集团公司 | Fire discharging piece, combustor adopting fire discharging piece and gas water heater |
| CN204665266U (en) * | 2015-04-30 | 2015-09-23 | 上海禾森机电有限公司 | A kind of low NO for wall-hung boiler xburner |
-
2015
- 2015-04-30 CN CN201510217308.6A patent/CN104807010A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06193834A (en) * | 1992-12-25 | 1994-07-15 | Noritz Corp | Burner |
| CN201078700Y (en) * | 2007-08-13 | 2008-06-25 | 樱花卫厨（中国）有限公司 | Combustor of low oxynitride gas water heater |
| CN201373403Y (en) * | 2009-03-17 | 2009-12-30 | 上海禾森机电有限公司 | Fire grate of low nitrogen oxygen combustor used for wall-mounted boiler |
| CN201436472U (en) * | 2009-05-25 | 2010-04-07 | 海尔集团公司 | Fire discharging piece, combustor adopting fire discharging piece and gas water heater |
| CN204665266U (en) * | 2015-04-30 | 2015-09-23 | 上海禾森机电有限公司 | A kind of low NO for wall-hung boiler xburner |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642106A (en) * | 2016-11-18 | 2017-05-10 | 宁波方太厨具有限公司 | Thick light burner |
| CN108954317A (en) * | 2018-05-30 | 2018-12-07 | 上海禾森机电有限公司 | A kind of low NO of the negative pressure of wall-hung boilerxBurner |
| CN108930963A (en) * | 2018-08-21 | 2018-12-04 | 上海禾森机电有限公司 | A kind of pressure combustion low-NOx combustor |
| CN108930963B (en) * | 2018-08-21 | 2024-05-17 | 上海禾森机电有限公司 | Positive pressure combustion low NOx combustor |
| CN109751598A (en) * | 2019-03-14 | 2019-05-14 | 上海金巨源热能技术有限公司 | A kind of burner with four light two dense linear array fire hole cores |
| CN109751598B (en) * | 2019-03-14 | 2024-08-16 | 上海金巨源热能技术有限公司 | Combustor with four-light two-thick linear array fire hole cores |
| CN113654041A (en) * | 2021-07-22 | 2021-11-16 | 何俊荣 | Up-draft thick-thin burner |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20150729 |