CN202118912U - Fully premixed combustion device - Google Patents
Fully premixed combustion device Download PDFInfo
- Publication number
- CN202118912U CN202118912U CN2011201956404U CN201120195640U CN202118912U CN 202118912 U CN202118912 U CN 202118912U CN 2011201956404 U CN2011201956404 U CN 2011201956404U CN 201120195640 U CN201120195640 U CN 201120195640U CN 202118912 U CN202118912 U CN 202118912U
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- inlet pipe
- air
- fuel gas
- fully
- nozzle
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Abstract
The utility model relates to a fully premixed combustion device, which comprises a nozzle, an air inlet pipe, a fuel gas supply device, a fuel gas inlet pipe, an adjusting valve installed on the fuel gas inlet pipe, a premixing cavity arranged in front of the nozzle and a control unit. An inlet of the air inlet pipe is provided with a frequency conversion fan, and the control unit automatically matches and adjusts air supply amount of the frequency conversion fan according to acquired signals. Compared with the prior art, the fully premixed combustion device conducts complete mixing of fuel gas and air before the fuel gas and the air enter the nozzle of a combustion chamber, completely disperses and mixes gas molecules through the premixing cavity and enables the mixing to be more complete. Accordingly, combustion speed is no longer limited by physical conditions including gas diffusion velocity and is faster, and the efficiency is higher.
Description
Technical field
The utility model relates to burner, relates in particular to fully-premixed burner.
Background technology
Burner is the indispensable core apparatus of burning type stove equipment, and whether good its performance and structure be directly has influence on fuel availability, the thermal efficiency of stove and the requirement of whether satisfying environmental protection and energy saving.The efficiency of combustion of burner depends on the admixture of combustible and oxidizer.The structure of existing burner has nothing in common with each other; Concentrate injection and the socket type of air multithread thigh injection all around incision or diffusion combustion structure, combustion gas and air stratification injection mixed combustion structure, combustion gas and the staggered injection of air mixed combustion structure of rectangle or the like like combustion gas; All these burners all are to adopt various control valves or device control fuel and air to reach a certain proportion of confession amount; Mix in the combustion chamber then and burn; This mode receives the restriction of space (the diffusion mixing needs enough spaces) and time (burning velocity and diffusion velocity coupling); Cause that combustion intensity is not enough, fuel mixes not goodly with air, and cause the appearance of incomplete combustion or problems such as combustion instability, heat load adjustment poor performance thus.
The utility model content
The purpose of the utility model is exactly that existing burner combustion intensity is not enough in order to overcome, fuel mixes not good with air; Defectives such as incomplete combustion or combustion instability, heat load adjustment poor performance and fully-premixed burner is provided; This device mixes fuel before getting into combustion chamber burner with air fully; Through the premix chamber gas molecule is fully stirred the mixing of loosing; Feasible mixing is more complete, thereby makes burning velocity no longer be subject to physical conditions such as gas diffusion velocity, and burning velocity is faster, efficient is higher.
The purpose of the utility model can realize through following technical scheme: fully-premixed burner; Comprise nozzle, air intake duct, gas supply device, gas inlet pipe and be installed in the control valve on the said gas inlet pipe, also comprise being arranged on the preceding premix cavity of nozzle.
Preferably, also comprise control module, said air intake duct import is provided with frequency conversion fan, and said control module matees the air output of adjusting said frequency conversion fan automatically according to the signal that collects.
Preferably, be provided with pressure sensor on the said gas inlet pipe, the signal that said control module collects comprises the pressure signal that said pressure sensor provides.
Preferably, also be provided with flow sensor on the said gas inlet pipe, the signal that said control module collects also comprises the flow signal that said flow sensor provides.
Preferably, be provided with the circular passage in the said premix cavity, it is more abundant to make that combustion gas mixes with air, thereby makes that burning is more complete.
Compared with prior art, the beneficial effect of the utility model is following:
1, fuel mixes before getting into combustion chamber burner with air fully; Through the premix chamber gas molecule is fully stirred the mixing of loosing; Feasible mixing is more complete, thereby makes burning velocity no longer be subject to physical conditions such as gas diffusion velocity, and burning velocity is faster, efficient is higher.
2, pass through at gas circuit pressure sensor, flow sensor etc.; Automatically mate adjustment frequency conversion fan air output behind integrated flow rate, the pressure signal; Guarantee also pressure, the flow velocity of combustion gas and air to be reached an agreement through premix when air inlet is accurate in scale, the situation of avoiding muzzle velocity not wait takes place.
3, be provided with the circular passage in the premix cavity, it is more abundant to make that combustion gas mixes with air, thereby makes that burning is more complete.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the premixed theory of combustion figure of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment:
As shown in Figure 1, fully-premixed burner comprises nozzle, air intake duct, gas supply device, gas inlet pipe and is installed in the control valve on the said gas inlet pipe, also comprises being arranged on the preceding premix cavity of nozzle.
In the present embodiment; Also comprise control module; Said air intake duct import is provided with frequency conversion fan, is provided with pressure sensor on the said gas inlet pipe, and said control module matees the air output of adjusting said frequency conversion fan automatically according to the pressure signal that collects.
In the present embodiment, also be provided with flow sensor on the said gas inlet pipe, the signal that said control module collects also comprises the flow signal that said flow sensor provides.
In the present embodiment, be provided with the circular passage in the said premix cavity.
The foregoing description is to regulate as firepower with control valve control gas flow; Consider the pressure oscillation of actual behaviour in service simultaneously; In the gas circuit pressure sensor, mate adjustment frequency conversion fan air output behind integrated flow rate, the pressure signal automatically, guarantee that air inlet is accurate in scale.Combustion gas and air get into the premix cavity and carry out premix, effectively promote mixed effect, simultaneously pressure, the flow velocity of combustion gas and air are reached an agreement through the premix chamber, and the situation of avoiding muzzle velocity not wait takes place.Through nozzle ejection after-combustion, owing to accomplished accurate mixed, burning is complete, and burning velocity is fast, and flame temperature is high.Be automation premix control technology owing to what adopt simultaneously, guaranteeing that mixed proportion has also guaranteed can not produce tempering phenomenon by work safety simultaneously accurately.Its premixed theory of combustion is as shown in Figure 2.
Fully-premixed burner in the foregoing description is used for the biscuit kiln transformation, and transforming the back exhaust gas temperature is 167～172 ℃, and smoke evacuation place excess oxygen percent volume to volume can reach 2%～2.7%, and the thermal efficiency is 88.1%, but solar term 6%.Than the residual neat recovering system of gigantic project, heat-insulation and heat-preservation system etc., utilize premix combustion systems transformation, project investment is less, and energy-saving benefit is more remarkable, and it is applied in non-ferrous metal melting technology, can save energy 17.6%, improved efficiency 27.2%; Be applied in ceramic sintering process, can save energy 26.82%; Be applied in chemical industry solid caustic soda refining technique, can save energy 11.38%, improved efficiency 14.26%, output increases by 17.44%.
Claims (5)
1. fully-premixed burner comprises nozzle, air intake duct, gas supply device, gas inlet pipe and is installed in the control valve on the said gas inlet pipe, it is characterized in that: also comprise being arranged on the preceding premix cavity of nozzle.
2. fully-premixed burner as claimed in claim 1 is characterized in that: also comprise control module, said air intake duct import is provided with frequency conversion fan, and said control module matees the air output of adjusting said frequency conversion fan automatically according to the signal that collects.
3. fully-premixed burner as claimed in claim 2 is characterized in that: be provided with pressure sensor on the said gas inlet pipe, the signal that said control module collects comprises the pressure signal that said pressure sensor provides.
4. fully-premixed burner as claimed in claim 3 is characterized in that: also be provided with flow sensor on the said gas inlet pipe, the signal that said control module collects also comprises the flow signal that said flow sensor provides.
5. like each described fully-premixed burner in the claim 1 to 4, it is characterized in that: be provided with the circular passage in the said premix cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201956404U CN202118912U (en) | 2011-06-10 | 2011-06-10 | Fully premixed combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201956404U CN202118912U (en) | 2011-06-10 | 2011-06-10 | Fully premixed combustion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202118912U true CN202118912U (en) | 2012-01-18 |
Family
ID=45459974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201956404U Expired - Fee Related CN202118912U (en) | 2011-06-10 | 2011-06-10 | Fully premixed combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202118912U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062749A (en) * | 2013-01-29 | 2013-04-24 | 山西省第二建筑工程公司 | Method for improving heat efficiency of gas boiler |
| CN104896474A (en) * | 2015-06-18 | 2015-09-09 | 孙永伟 | Modified domestic gas stove with gas and air premixing function |
-
2011
- 2011-06-10 CN CN2011201956404U patent/CN202118912U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062749A (en) * | 2013-01-29 | 2013-04-24 | 山西省第二建筑工程公司 | Method for improving heat efficiency of gas boiler |
| CN104896474A (en) * | 2015-06-18 | 2015-09-09 | 孙永伟 | Modified domestic gas stove with gas and air premixing function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20140610 |