CN201078700Y - Combustor of low oxynitride gas water heater - Google Patents
Combustor of low oxynitride gas water heater Download PDFInfo
- Publication number
- CN201078700Y CN201078700Y CNU2007200428293U CN200720042829U CN201078700Y CN 201078700 Y CN201078700 Y CN 201078700Y CN U2007200428293 U CNU2007200428293 U CN U2007200428293U CN 200720042829 U CN200720042829 U CN 200720042829U CN 201078700 Y CN201078700 Y CN 201078700Y
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- burning
- fire
- fire hole
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- deep
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Abstract
The utility model discloses a burner of low-NOx fuel gas water heater, which comprises a fire grate, a deep burning fire hole and a light burning fire hole arranged in interval; the outlet of the first air inlet passage is communicated with the deep burning fire hole on the top surface of the fire discharger; a plurality of air gates are arranged on the air inlet passage in interval; the outlet of the air gates are on the elevation of the fire discharger, the light burning fire hole is at the top of the gap between two neighboring fire dischargers; the light burning fire hole is communicated with the air gates through the gap; the fuel of first air inlet passage is directly input in the deep burning fire hole for deep burning, the burning temperature of the flame can be lowered; the fuel of the second air inlet passage reaches the light deep fire hole for light burning by flowing through the gap between two neighboring fire dischargers after going out of the air gates, at that time, a part of unburned fuel from the deep burning fire hole is supplemented into the neighboring light burning fire holes for burning, with the density of oxygen and temperature of flame, NOx and Co in secondary burning is lowered. The utility model can effectively lower the temperature of flame and reduce the discharge of NOx.
Description
Technical field
The utility model 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 utility model provides a kind of burner of low nitrogen oxide gas water heater, and the burner of this low nitrogen oxide gas water heater can effectively reduce the discharging of oxynitrides.
The utility model 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 venthole 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 utility model is:
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 beneficial effects of the utility model are: 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 described in the utility model.
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 venthole 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.
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.
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 venthole by described gap.
2. the burner of low nitrogen oxide gas water heater according to claim 1 is characterized in that: 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 |
|---|---|---|---|
| CNU2007200428293U CN201078700Y (en) | 2007-08-13 | 2007-08-13 | Combustor of low oxynitride gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200428293U CN201078700Y (en) | 2007-08-13 | 2007-08-13 | Combustor of low oxynitride gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201078700Y true CN201078700Y (en) | 2008-06-25 |
Family
ID=39570765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200428293U Expired - Lifetime CN201078700Y (en) | 2007-08-13 | 2007-08-13 | Combustor of low oxynitride gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201078700Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635863A (en) * | 2012-04-08 | 2012-08-15 | 威能(无锡)供热设备有限公司 | Burner and fuel gas hot water equipment adopting same |
| 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 |
| CN107218599A (en) * | 2017-06-02 | 2017-09-29 | 江苏叶茂厨卫科技有限公司 | All-premixing burner |
-
2007
- 2007-08-13 CN CNU2007200428293U patent/CN201078700Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102635863A (en) * | 2012-04-08 | 2012-08-15 | 威能(无锡)供热设备有限公司 | Burner and fuel gas hot water equipment adopting same |
| CN102635863B (en) * | 2012-04-08 | 2015-01-14 | 威能(无锡)供热设备有限公司 | Burner and fuel gas hot water equipment adopting same |
| 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 |
| CN107218599A (en) * | 2017-06-02 | 2017-09-29 | 江苏叶茂厨卫科技有限公司 | All-premixing burner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SAKURA SANITARY AND KITCHENWARE ( CHINA ) CO., LTD Free format text: FORMER NAME OR ADDRESS: AKURA TOILET + KITCHEN(CHINA) CO.,LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: No. 1 South Qingyang Road, Jiangsu, Kunshan Province, China: 215300 Patentee after: Sakura Bath & Kitchen Products (China) Co., Ltd. Address before: No. 1 South Qingyang Road, Jiangsu, Kunshan Province, China: 215300 Patentee before: Sakura Bath and Kitchen Products (China) Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080625 |