CN101592338A - The burner of low nitrogen oxide gas water heater - Google Patents
The burner of low nitrogen oxide gas water heater Download PDFInfo
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- CN101592338A CN101592338A CNA2008101224057A CN200810122405A CN101592338A CN 101592338 A CN101592338 A CN 101592338A CN A2008101224057 A CNA2008101224057 A CN A2008101224057A CN 200810122405 A CN200810122405 A CN 200810122405A CN 101592338 A CN101592338 A CN 101592338A
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Abstract
The invention discloses a kind of burner of low nitrogen oxide gas water heater, comprise fire row, dense burning fire hole and light burning fire hole are set in distance, the outlet of first via inlet channel directly communicates with the dense burning fire hole of fire row's end face, establish several ventholes on the second road inlet channel at interval, several ventholes are opened on fire row facade, and light burning fire hole is the gap end face between the adjacent two fire rows, and light burning fire hole communicates with described venthole by described gap; Dense burning fire hole is directly led in the combustion gas of first via inlet channel, carry out dense burning, the flame combustion temperature can reduce, the combustion gas of the second road inlet channel arrives light burning fire hole from the gap of flowing through after venthole comes out between adjacent fire row, carry out light burning, at this moment come out not have the part combustion gas of burning to add to adjacent light burning fire hole burning from dense burning fire hole, make the NOx and the CO reduction of second-time burning because of the reduction of oxygen concentration and flame temperature.This example can effectively reduce flame temperature, reduces the discharging of oxynitrides.
Description
Technical field
The present invention relates to a kind of burner of gas heater.
Background technology
The gas heater of being sold on the existing China market only to CO, and does not add restriction to human body and the even more serious oxynitrides (NOx) of atmospheric effect in the detection of waste gas pointer, only making the classification regulation on the GB6932-2001 in appendix.NO is one of main oxious component in the flue gas, and it is to the pollution of environment and the harm of health is familiar with by people in recent decades gradually, and attaches great importance to.Follow-up low NOx will be the another developing direction of gas heater;
NOx in the atmosphere is mainly derived from fuel combustion, as various burners, automobile etc.Although the NOx kind is a lot, it mainly is NO and NO that burning produces NOx
2, its NO and NO
2Volumetric ratio be about 90%～95%, the system represent with NOx;
Water heater on the existing market does not all have the ability of low NOx with burner, the principal element that influences NO production is the local parameter (temperature, pressure and gas group are graded) that generates point, and local parameter is relevant with many factors, as parameters such as the pressure of combustion gas and Air mixing completeness, gas flow characteristic, burner structure characteristics, gas and temperature.Because the NO formation speed is slower than combustion reaction, therefore in flame front, can not generate NO in a large number, the a large amount of generation of NOx is in the flame front downstream, particularly reach those long zones of gas residence time greatly at flame front downstream localized hyperthermia, local oxygen concentration, it is vital that these zones generate control NO.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides a kind of burner of low nitrogen oxide gas water heater, the burner of this low nitrogen oxide gas water heater can effectively reduce the discharging of oxynitrides.
The present invention for the technical scheme that solves its technical problem and adopt is: a kind of burner of low nitrogen oxide gas water heater, comprise some fire rows, dense burning fire hole and light burning fire hole are set in distance, each fire row is provided with the two-way inlet channel, the outlet of first via inlet channel directly communicates with the dense burning fire hole of fire row end face, be interval with several ventholes on the second road inlet channel, several ventholes are opened on fire row facade, light burning fire hole is the gap end face between the adjacent two fire rows, light burning fire hole communicates with described venthole on the second road inlet channel by described gap, like this, dense burning fire hole is directly led in the combustion gas of first via inlet channel, gas concentration is denseer, carry out dense burning, the flame combustion temperature can reduce, the combustion gas of the second road inlet channel arrives light burning fire hole from the gap of flowing through after venthole comes out between adjacent fire row, auxiliary air replenishes more, gas concentration is lower, carry out light burning, at this moment come out not have the part combustion gas of burning to add to adjacent light burning fire hole burning from dense burning fire hole, make the NOx and the CO reduction of second-time burning because of the reduction of oxygen concentration and flame temperature, therefore this example can effectively reduce flame temperature, reduces the discharging of oxynitrides.
Further technical scheme of the present invention is:
The second road inlet channel is in the below of first via inlet channel, and several ventholes on the second road inlet channel are the middle and lower part that is horizontally disposed with and is in fire row facade.
The invention has the beneficial effects as follows: because this routine dense burning fire hole and light burning fire hole are set in distance, dense burning fire hole is carried out dense burning, flame temperature is lower, come out not have the part combustion gas of burning to add to adjacent light burning fire hole burning from dense burning fire hole, reduction because of oxygen concentration and flame temperature reduces the NOx of second-time burning and CO like this, therefore this example can effectively reduce flame temperature, reduces the discharging of oxynitrides.
Description of drawings
Fig. 1 is a single fire row schematic diagram of the present invention.
The specific embodiment
Embodiment: a kind of burner of low nitrogen oxide gas water heater, comprise some fire rows 1, dense burning fire hole 2 is set in distance with light burning fire hole, each fire row is provided with the two-way inlet channel, 3 outlets of first via inlet channel directly communicate with the dense burning fire hole 2 of fire row end face, be interval with several ventholes 5 on the second road inlet channel 4, several ventholes are opened on fire row facade, light burning fire hole is the gap end face between the adjacent two fire rows, light burning fire hole communicates with described venthole on the second road inlet channel by described gap, like this, dense burning fire hole is directly led in the combustion gas of first via inlet channel, gas concentration is denseer, carry out dense burning, the flame combustion temperature can reduce, the combustion gas of the second road inlet channel arrives light burning fire hole from the gap of flowing through after venthole comes out between adjacent fire row, auxiliary air replenishes more, gas concentration is lower, carry out light burning, at this moment come out not have the part combustion gas of burning to add to adjacent light burning fire hole burning (being that superfluous combustion gas and excess air carry out second-time burning again) from dense burning fire hole, make the NOx and the CO reduction of second-time burning because of the reduction of oxygen concentration and flame temperature, therefore this example can effectively reduce flame temperature, reduces the discharging of oxynitrides.
The second road inlet channel is in the below of first via inlet channel, and several ventholes on the second road inlet channel are the middle and lower part that is horizontally disposed with and is in fire row facade.
In this example, combustion gas is burnt under overrich and is dense burning, and air is being left to burn to be light burning excessively, and two kinds of combustion systems all can reduce flame temperature, and this principle is a known technology, and this example no longer describes in detail.
Claims (2)
1. the burner of a low nitrogen oxide gas water heater, comprise some fire rows, it is characterized in that: dense burning fire hole and light burning fire hole are set in distance, each fire row is provided with the two-way inlet channel, the outlet of first via inlet channel directly communicates with the dense burning fire hole of fire row end face, be interval with several ventholes on the second road inlet channel, several ventholes are opened on fire row facade, light burning fire hole is the gap end face between the adjacent two fire rows, and light burning fire hole communicates with described venthole on the second road inlet channel by described gap.
2. the burner of low nitrogen oxide gas water heater according to claim 1, it is characterized in that: the second road inlet channel is in the below of first via inlet channel, and several ventholes on the second road inlet channel are the middle and lower part that is horizontally disposed with and is in fire row facade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101224057A CN101592338A (en) | 2008-05-27 | 2008-05-27 | The burner of low nitrogen oxide gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101224057A CN101592338A (en) | 2008-05-27 | 2008-05-27 | The burner of low nitrogen oxide gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101592338A true CN101592338A (en) | 2009-12-02 |
Family
ID=41407130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101224057A Pending CN101592338A (en) | 2008-05-27 | 2008-05-27 | The burner of low nitrogen oxide gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101592338A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162290A (en) * | 2011-12-09 | 2013-06-19 | 株式会社能率 | Rich-lean combustion burner and combustion apparatus |
| CN113654041A (en) * | 2021-07-22 | 2021-11-16 | 何俊荣 | Up-draft thick-thin burner |
-
2008
- 2008-05-27 CN CNA2008101224057A patent/CN101592338A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162290A (en) * | 2011-12-09 | 2013-06-19 | 株式会社能率 | Rich-lean combustion burner and combustion apparatus |
| CN103162290B (en) * | 2011-12-09 | 2016-08-03 | 株式会社能率 | Rich-lean combustion burner and burner |
| CN113654041A (en) * | 2021-07-22 | 2021-11-16 | 何俊荣 | Up-draft thick-thin burner |
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Open date: 20091202 |