CN203848291U - Premixed fuel gas positive pressure burning energy-saving burner - Google Patents
Premixed fuel gas positive pressure burning energy-saving burner Download PDFInfo
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- CN203848291U CN203848291U CN201420229732.3U CN201420229732U CN203848291U CN 203848291 U CN203848291 U CN 203848291U CN 201420229732 U CN201420229732 U CN 201420229732U CN 203848291 U CN203848291 U CN 203848291U
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Abstract
The utility model discloses a premixed fuel gas positive pressure burning energy-saving burner. The burner comprises a burning face composed of metal fiber braided fabric, a mixer and a draught fan, and further comprises a cooling device which is arranged in the peripheral direction of the burning face. After being premixed in the mixer, fuel gas and air enter a pre-burning cavity to be further completely mixed and then reach the surface of the metal fiber braided fabric to be burned. According to the premixed fuel gas positive pressure burning energy-saving burner, the premixed fuel gas is burned in a positive pressure burning state, burning is complete, the temperature of flames is high, the backfire problem in a traditional burner is solved, automatic flameout prevention can be achieved, and the ignition deflagration problem which happens easily of the burner in the premixed closed burning process is solved. The integral design of a burning part and the mixer enables the size of the burner to be far smaller than the traditional burner, and the premixed fuel gas positive pressure burning energy-saving burner is applicable to closed burning equipment.
Description
Technical field
The utility model belongs to burner industry field, is specifically related to a kind of energy-saving burner of pre-mixing gas combustion pressure combustion.
Background technology
The combustion system of burner is mainly divided into diffusion type burning and premixed burning.
The burner of prior art mainly adopts traditional fire grate type diffusion combustion, and major part is with no pressure or negative-pressure firing.Before burning, combustion gas and air not to scale (NTS) are fully premixed, but burn on mixing limit, limit, fire row nozzle place, because of undercompounding, cause can not completing combustion in combustion gas, flame temperature is low, and excessive air coefficient has also reduced its thermal efficiency, cause combustion gas waste, not clean-burning waste gas brings infringement to environment and health.In combustion process, security is lower, and fire row volume is large, and the stroke that burning needs is long, inevitably increased the volume of the cumulative volume of burner and the equipment of use burner.
And the mixing of premixed combustion gas is comparatively abundant, but due to combustion gas incendivity state in mixing with air before taking fire, easily produce in this case tempering and relative confined space ignition deflagrating of hot, bring potential safety hazard.
In prior art, there is people to adopt porous ceramic plate as combustion head, but ceramic wafer material temperature is poor, mechanical strength is low, percent opening is low, poor with metal shell combination seal, in use often occur bursting and weathering of ceramic wafer, service life is low, thereby can not thoroughly solve tempering and relative confined space ignition deflagrating of hot problem.
Utility model content
The utility model is in order to solve above deficiency, designed a kind of energy-saving burner of pre-mixing gas combustion pressure combustion, this burner volume is little, can in confined space, carry out the pressure combustion of fully premixed combustion gas, ignition temperature is high, sufficient combustion and evenly and have anti-tempered performance and prevent relative confined space ignition deflagrating of hot function.
In order to realize the technical scheme that the utility model object takes, be: a kind of energy-saving burner of pre-mixing gas combustion pressure combustion, comprise burning portion, the blender for air mixture and air, blower fan, described blender is connected with blower fan with burning portion respectively, and described burning portion comprises the pre-burning chamber that is provided with air inlet and combustion front and the cooling device that is positioned at pre-burning chamber one side; Described combustion front is made by metallic fiber braid, and described cooling device weaves object plane circumferential arrangement along metallic fiber, and is closely connected with described metallic fiber braid;
Described blender is communicated with burning portion, blender is provided with fuel gas inlet, the air intake being communicated with blower fan, hybrid chamber and gas outlet, in described hybrid chamber, be provided with successively the 3rd cavity that diminishing the first cavity of internal diameter, cylindrical shape the second cavity and internal diameter expand gradually, evenly distributed on the second cavity wall have a plurality of through holes, and described through hole is communicated with fuel gas inlet; Described air intake is located on the first cavity, and described gas outlet is located on the 3rd cavity and with the air inlet in described pre-burning chamber and is connected;
Combustion gas and air, after described blender premix, are entered in pre-burning chamber and are further fully mixed by described air inlet, then arrive described metallic fiber textile surface and burn.
The utility model is dealt with problems and can also further be taked following corrective measure:
Wherein, described cooling device is water cooling tube, described water cooling tube along described metallic fiber braid edge around at least one week.
Wherein, the back side of described metallic fiber braid is provided with air distribution plate, and described air distribution plate is provided with a plurality of metering holes, and gaseous mixture, after further mix in pre-burning chamber, arrives described metallic fiber textile surface through described metering hole and burns;
The aperture of described metering hole and described metallic fiber braid and porosity arrange respectively by a certain percentage, flame propagation velocity while making the flow velocity of gaseous mixture be greater than mixture combustion all the time, and gaseous mixture is evenly distributed on described metal fibre interlacement surface, in order to better to prevent tempering.
Wherein, described blower fan is provided with filter, for preventing that dust foreign material etc. from entering in burning portion, so that metallic fiber textile surface keeps clean, makes the hole of described metallic fiber braid and metering hole unimpeded, guarantees flow velocity and the uniformity of gaseous mixture.
Wherein, also comprise the volume control damper of being located at described air intake place and the gas flow control valve that is positioned at fuel gas inlet place, for can better controlling the flow of combustion gas and air, realize the controllability of power, meet different combustion requirements.
Wherein, described combustion front place is provided with igniter and blowout protection induction installation.
Wherein, also comprise controller, described controller is connected with volume control damper with igniter, blowout protection induction installation, gas flow control valve respectively.Described igniter is automatic ignition under controller is controlled, and opens gas flow control valve.Described blowout protection induction installation detects the flame situation that has or not automatically, accurately, and when meeting accident flame-out or tempering, blowout protection induction installation feedback signal, to controller, is cut off source of the gas and power supply automatically in time, carries out safeguard protection.
Wherein, the surface configuration of described combustion front is plane, cabochon or spherical.
The beneficial effect of the energy-saving burner of the utility model pre-mixing gas combustion pressure combustion is:
1, this energy-saving burner has adopted metallic fiber braid as combustion front, the aperture of the metering hole on air distribution plate and metallic fiber braid and porosity be relative set in proportion, guarantee the flame propagation velocity when flow velocity of gaseous mixture is greater than mixture combustion all the time in combustion process, overcome the tempering problem that conventional burners sealing combustion easily produces; The heat radiation that the cooling device that is simultaneously arranged at combustion front periphery has been accelerated metallic fiber braid makes it all the time in low-temperature condition, has further improved the tempering resistance of burner, and combustion front durable.This burner can be realized auto extinguishing protection, has overcome conventional burners ignition deflagrating of hot problem in confined space, and security is improved greatly.
2, under the suction function of combustion gas in blender the second cavity, be inhaled in the second cavity, the gaseous mixture of combustion gas and air is strongly kicked stream in cavity, combustion gas has been realized better mixing with air in short distance, then through pre-burning chamber, further fully mix, improved the adequacy of mixing, make gaseous mixture can carry out even pressure combustion in metallic fiber textile surface, molecule aspect is goed deep in burning, make burning more fully, flame temperature is higher; The Integral design of described burning portion and described blender makes burner volume of the present utility model be far smaller than conventional burners volume.This burner can be widely applied in the equipment of various sealings, malleation premixed combustion.
Accompanying drawing explanation
Fig. 1 is the structural representation of the energy-saving burner of the utility model pre-mixing gas combustion pressure combustion;
Fig. 2 is the side view of burning portion in the energy-saving burner of the utility model pre-mixing gas combustion pressure combustion;
Fig. 3 is the profile of blender in the energy-saving burner of the utility model pre-mixing gas combustion pressure combustion.
The specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further:
With reference to accompanying drawing 1, to shown in accompanying drawing 3, a kind of energy-saving burner of pre-mixing gas combustion pressure combustion, comprises burning portion 1, blower fan 3 and for the blender 2 of air mixture and air.Described burning portion 1 comprise be provided with air inlet pre-burning chamber 103, be positioned at the combustion front 101 of pre-burning chamber one side and around the water cooling tube 102 (can be also other cooling devices in other embodiments) of combustion front circumferential arrangement, water cooling tube 102 is closely connected with combustion front 101; Described combustion front 101 is made by metallic fiber braid, described metallic fiber braid is Aludirome fabric, combustion front 101 surfaces be shaped as plane (in other embodiments, the surface configuration of combustion front can be also cabochon or spherical).The back side at described metallic fiber braid is provided with air distribution plate, described air distribution plate is provided with a plurality of metering holes, the aperture of described metering hole and described fabric and porosity arrange respectively by a certain percentage, flame propagation velocity while making the flow velocity of gaseous mixture be greater than mixture combustion all the time, better prevents tempering.
Described blender 2 is communicated with burning portion 1, air intake, hybrid chamber and gas outlet that blender 2 is provided with fuel gas inlet, is communicated with blower fan 3.Fuel gas inlet and air intake place are respectively equipped with gas flow control valve and volume control damper 4.In described hybrid chamber, be provided with successively the 3rd cavity 203 that diminishing the first cavity 201 of internal diameter, cylindrical shape the second cavity 202 and internal diameter expand gradually, evenly distributed on the second cavity 202 chamber walls have a plurality of through hole 202a, and described through hole 202a is communicated with fuel gas inlet; Described air intake is located on the first cavity 201, and described gas outlet is located on the 3rd cavity 203 and with the air inlet 103a in described pre-burning chamber 103 and is connected.The total length of described blender is 40-80mm, combustion gas and air can be realized better mixing in this short distance, then gaseous mixture enters pre-burning chamber 103 and further fully mixes from air inlet 103a, after mixing, through described metering hole, arrive described metallic fiber textile surface, in described metallic fiber textile surface, burn.
On the housing of blower fan 3, be also provided with filter, for preventing that dust foreign material etc. from entering burning portion, keep metallic fiber textile surface clean, make the hole maintenance of metering hole and fabric unimpeded.Described combustion front 101 places are provided with electronic ignition pin and blowout protection inductive needle, and electronic ignition pin is controlled automatic ignition and opened gas flow control valve by controller.Described blowout protection inductive needle is for detecting automatically, accurately the flame situation that has or not, and when meeting accident flame-out or tempering, blowout protection inductive needle cuts off source of the gas and power supply automatically in time by controller, carries out safeguard protection.
The operation principle of the energy-saving burner of the utility model pre-mixing gas combustion pressure combustion is as follows:
Described blower fan 3 is connected with the air intake of blender 2, Gas Pipe is connected on the second cavity 202, blower fan 3 is sent into air to the interior forced-air blast of the first cavity 201 of blender 2, because the first cavity 201 circulation areas are progressively dwindled, because of Venturi effect, swiftly flowing air can form certain negative pressure in the second cavity, combustion gas radially enters the junction of the first cavity and the 3rd cavity under the acting in conjunction of self pressure and the second cavity negative pressure from through hole 202a, after mixing with swiftly flowing air, enter the 3rd cavity 203, because the 3rd cavity 203 is by increasing gradually to cavity mouth place internal diameter in chamber, make gaseous mixture at the interior stream of acutely kicking of the 3rd cavity 203, gaseous mixture reaches good admixture in short distance, then gaseous mixture enters the air inlet 103a in pre-burning chamber 103 from blender 2 gas outlets, in pre-burning chamber 103, further fully mix again, after mixing, through the metering hole on air distribution plate, be evenly distributed on metallic fiber braid, with under controller is controlled, at the electronic ignition pin of fired state, contact ignition, fully premix and equally distributed gaseous mixture carry out steady positive pressure burning at metallic fiber braid outer surface, burning velocity is fast, flame temperature is high and even, without local temperature difference.Water cooling tube 102 has reduced the temperature of metallic fiber braid, aperture and the porosity of current limiting plate and fabric design respectively the flame propagation velocity that makes gaseous mixture flow velocity be greater than all the time mixture combustion by corresponding proportion simultaneously, have prevented the generation of tempering in combustion process.When meeting accident flame-out or tempering, the blowout protection inductive needle feedback signal at combustion front 101 places, to controller, is cut off source of the gas and power supply automatically in time, carries out safeguard protection, to prevent gas leakage, has improved safety and stability.
In combustion process, can to the ratio of gaseous mixture, adjust by gas flow control valve and volume control damper, to meet different burning demands.
The announcement of book and instruction according to the above description, the utility model those skilled in the art can also change and revise above-mentioned embodiment.Therefore, the utility model is not limited to the specific embodiment disclosed and described above, to modifications and changes more of the present utility model, also should fall in the protection domain of claim of the present utility model.In addition,, although used some specific terms in this description, these terms just for convenience of description, do not form any restriction to the utility model.
Claims (8)
1. an energy-saving burner for pre-mixing gas combustion pressure combustion, comprises burning portion, the blender for air mixture and air, blower fan, and described blender is connected with blower fan with burning portion respectively, it is characterized in that,
Described burning portion comprises the pre-burning chamber that is provided with air inlet and combustion front and the cooling device that is positioned at pre-burning chamber one side; Described combustion front is made by metallic fiber braid, and described cooling device weaves object plane circumferential arrangement along metallic fiber, and is closely connected with described metallic fiber braid;
Described blender is communicated with burning portion, and blender is provided with fuel gas inlet, the air intake being communicated with blower fan, hybrid chamber and gas outlet; In described hybrid chamber, be provided with successively the 3rd cavity that diminishing the first cavity of internal diameter, cylindrical shape the second cavity and internal diameter expand gradually, evenly distributed on the second cavity wall have a plurality of through holes, and described through hole is communicated with fuel gas inlet; Described air intake is located on the first cavity, and described gas outlet is located on the 3rd cavity and with the air inlet in described pre-burning chamber and is connected;
Combustion gas and air, after described blender premix, are entered in pre-burning chamber and are further fully mixed by described air inlet, then arrive described metallic fiber textile surface and burn.
2. energy-saving burner according to claim 1, is characterized in that, described cooling device is water cooling tube, described water cooling tube along described metallic fiber braid edge around at least one week.
3. energy-saving burner according to claim 1, it is characterized in that, the back side of described metallic fiber braid is provided with air distribution plate, described air distribution plate is provided with a plurality of metering holes, gaseous mixture, after further mix in pre-burning chamber, arrives described metallic fiber textile surface through described metering hole and burns.
4. energy-saving burner according to claim 1, is characterized in that, described blower fan is provided with filter.
5. energy-saving burner according to claim 1, is characterized in that, also comprises the volume control damper of being located at described air intake place and the gas flow control valve that is positioned at fuel gas inlet place.
6. energy-saving burner according to claim 1, is characterized in that, described combustion front place is provided with igniter and blowout protection induction installation.
7. energy-saving burner according to claim 1, is characterized in that, also comprises controller, and described controller is connected with volume control damper with igniter, blowout protection induction installation, gas flow control valve respectively.
8. energy-saving burner according to claim 1, is characterized in that, the surface configuration of described combustion front is plane, cabochon or spherical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420229732.3U CN203848291U (en) | 2014-05-06 | 2014-05-06 | Premixed fuel gas positive pressure burning energy-saving burner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420229732.3U CN203848291U (en) | 2014-05-06 | 2014-05-06 | Premixed fuel gas positive pressure burning energy-saving burner |
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| Publication Number | Publication Date |
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| CN203848291U true CN203848291U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420229732.3U Expired - Fee Related CN203848291U (en) | 2014-05-06 | 2014-05-06 | Premixed fuel gas positive pressure burning energy-saving burner |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879753A (en) * | 2014-12-03 | 2015-09-02 | 武汉科技大学 | Monolayer multiporous foamed ceramic plate full-premix gas fuel burner |
| CN107726317A (en) * | 2017-11-29 | 2018-02-23 | 上海钜荷热力技术有限公司 | A kind of flat-plate burner with cooling device |
| CN108488795A (en) * | 2018-05-21 | 2018-09-04 | 北京联众华禹环保科技有限公司 | A kind of porous nozzles and gas water jacket furnace low NO |
| CN110579022A (en) * | 2018-06-07 | 2019-12-17 | 芜湖美的厨卫电器制造有限公司 | gas water heater and anti-backfire control method thereof |
| CN114110579A (en) * | 2021-10-29 | 2022-03-01 | 光大环保技术研究院（南京）有限公司 | Spiral-flow type gas burner suitable for working condition that back pressure of outlet of combustion chamber is positive pressure and working method thereof |
| CN114234189A (en) * | 2022-01-05 | 2022-03-25 | 北京富士特锅炉有限公司 | Rear premixing wall type laminar flow water cooling ultra-low nitrogen combustion device and control method thereof |
-
2014
- 2014-05-06 CN CN201420229732.3U patent/CN203848291U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879753A (en) * | 2014-12-03 | 2015-09-02 | 武汉科技大学 | Monolayer multiporous foamed ceramic plate full-premix gas fuel burner |
| CN104879753B (en) * | 2014-12-03 | 2017-04-05 | 武汉科技大学 | A kind of full premixed gas fuel burner of single layered porous foamed ceramic panel |
| CN107726317A (en) * | 2017-11-29 | 2018-02-23 | 上海钜荷热力技术有限公司 | A kind of flat-plate burner with cooling device |
| CN108488795A (en) * | 2018-05-21 | 2018-09-04 | 北京联众华禹环保科技有限公司 | A kind of porous nozzles and gas water jacket furnace low NO |
| CN110579022A (en) * | 2018-06-07 | 2019-12-17 | 芜湖美的厨卫电器制造有限公司 | gas water heater and anti-backfire control method thereof |
| CN110579022B (en) * | 2018-06-07 | 2022-03-18 | 芜湖美的厨卫电器制造有限公司 | Gas water heater and anti-backfire control method thereof |
| CN114110579A (en) * | 2021-10-29 | 2022-03-01 | 光大环保技术研究院（南京）有限公司 | Spiral-flow type gas burner suitable for working condition that back pressure of outlet of combustion chamber is positive pressure and working method thereof |
| CN114110579B (en) * | 2021-10-29 | 2023-11-21 | 光大环保技术研究院（南京）有限公司 | Swirl type gas burner suitable for working condition that back pressure of outlet of combustion chamber is positive pressure and working method thereof |
| CN114234189A (en) * | 2022-01-05 | 2022-03-25 | 北京富士特锅炉有限公司 | Rear premixing wall type laminar flow water cooling ultra-low nitrogen combustion device and control method thereof |
| CN114234189B (en) * | 2022-01-05 | 2022-07-05 | 北京富士特锅炉有限公司 | Rear premixing wall type laminar flow water cooling ultra-low nitrogen combustion device and control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170510 Address after: 519000 Guangdong city of Zhuhai province Hengqin Baohua Road No. 6, room 105 -12473 Patentee after: Zhuhai Song Lin Energy Technology Co., Ltd. Address before: Gongbei Wan Road Xiangzhou District Zhuhai city Guangdong province 519000 No. 323 Building 5 Room 202 Patentee before: Deng Yanhong |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20210506 |
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| CF01 | Termination of patent right due to non-payment of annual fee |