CN204665266U - A kind of low NO for wall-hung boiler xburner - Google Patents
A kind of low NO for wall-hung boiler xburner Download PDFInfo
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- CN204665266U CN204665266U CN201520274279.2U CN201520274279U CN204665266U CN 204665266 U CN204665266 U CN 204665266U CN 201520274279 U CN201520274279 U CN 201520274279U CN 204665266 U CN204665266 U CN 204665266U
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- burner
- combustion gas
- light
- ejecting port
- dense
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Abstract
The utility model relates to 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 (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.Compared with prior art, the utility model has the advantages such as structure is simple, fuel gas buring is abundant, NO_x formation is few, applied widely.
Description
Technical field
The utility model relates to a kind of burner for wall-hung boiler, especially relates 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
The purpose of this utility model 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.
The purpose of this utility model 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 utility model has the following advantages:
(1) the utility model 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 utility model, 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 utility model is negative-pressure firing device, overcomes the difficult point that low nitrogen burning is only limited to pressure combustion;
(4) the utility model is guaranteeing can also be used for pressure combustion under the condition that burner seals, applied widely;
(5) the utility model structure 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 utility modelly faces structural representation;
Fig. 2 is plan structure schematic diagram of the present utility model;
Fig. 3 is left TV structure schematic diagram of the present utility model;
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 utility model 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 |
|---|---|---|---|
| CN201520274279.2U CN204665266U (en) | 2015-04-30 | 2015-04-30 | A kind of low NO for wall-hung boiler xburner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520274279.2U CN204665266U (en) | 2015-04-30 | 2015-04-30 | A kind of low NO for wall-hung boiler xburner |
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|---|---|
| CN204665266U true CN204665266U (en) | 2015-09-23 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807010A (en) * | 2015-04-30 | 2015-07-29 | 上海禾森机电有限公司 | Low-NOx burner for wall-hung stove |
| CN109945170A (en) * | 2019-04-26 | 2019-06-28 | 平顶山市百阳丰机械制造有限公司 | A kind of fire grate type gas fired-boiler |
-
2015
- 2015-04-30 CN CN201520274279.2U patent/CN204665266U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807010A (en) * | 2015-04-30 | 2015-07-29 | 上海禾森机电有限公司 | Low-NOx burner for wall-hung stove |
| CN109945170A (en) * | 2019-04-26 | 2019-06-28 | 平顶山市百阳丰机械制造有限公司 | A kind of fire grate type gas fired-boiler |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |