CN2223809Y - Energy-saving low pressure atomization burner - Google Patents

Abstract

The utility model relates to an oil or gas two-purpose burning device. The burner is composed of a wind inlet pipe 6, a fuel inlet pipe 5, a fuel injection nozzle 4, a stable burning cover 3, a burner inner cylinder 2, and a burner outer cylinder 1, wherein the wind inlet pipe 6 is connected inside the burner outer cylinder 1, the stable burning cover 3 whose upper part is conical is arranged on the fuel nozzle 4, the conical surface is provided with a ventilation hole 7 and welded with a blade 8, the burner inner cylinder 2 whose type is of descended frustum and the combustor outer cylinder 1 are welded together on the upper part, the burner inner cylinder 2 is provided with an airport 9 on the upper part, and the lower part is communicated with the fuel inlet pipe 5. The burner has advantages of complete fuel burning, not charring, smokeless, and low noise; compared with the similar burner, the oil consumption of the burner is reduced by 30-40 %.

Description

Energy-conservation low pressure atomising burner

The utility model belongs to the oil-gas two-way burner.

Liquid fuel combustion belongs to heterogeneous property diffusion combustion, because some liquid such as diesel oil burning-point are higher, can not light with fire under the normal temperature, therefore before burning, must carry out oil droplet cracking, atomizing, form one deck fuel-steam on the fuel oil surface, and burn simultaneously with after air mixes, in industrial furnace and food cooking stove, oil atomization and mix by burner with air and to realize will be so the supply mode of the structure of burner, shape, size, air dielectric will play decisive role to the liquid fuel combustion overall process.Major part is the low pressure atomising burner in the food cooking stove of public use at present, this burner generally is made up of burner cylindrical shell, blast pipe, joint oil pipe, vapo(u)rizing oil nozzle and interior rotary fluid, the joint oil pipe enters from the cylindrical shell side, blast pipe enters from the cylindrical shell bottom, be vertical between the two, the circular hole opening is arranged on the interior rotary fluid.Shortcomings such as this burner ubiquity that oil droplet atomizing is inhomogeneous, oil and air mixing velocity are slow, incomplete make combustion efficiency undesirable.

The purpose of this utility model aims to provide a kind of simple in structure, and noise is low, and low-pressure air atomising burner completely burns.

Energy-conservation low pressure atomising burner described in the utility model is made up of blast pipe, fuel inlet tube, fuel nozzle, steady combustion cover, burner inner casing and burner urceolus, blast pipe taps in the burner urceolus, steady combustion cover places on the fuel nozzle, its top is taper, air vent is arranged on the taper surface, surely fire in taper and to be welded with blade on the cover, burner inner casing and burner urceolus are welded as a whole from top, the burner inner casing is the declivity taper type, row has fresh air inlet on it, fixedlys connected with fuel inlet tube in the bottom.

Burner fuel oil described in the utility model sprays from the center, and air enters the burner urceolus by low hush air blast, and air-flow is for the helical movement, spray air stream cutting oil molecule at a high speed through burner inner casing duct, make the oil droplet cracking, atomizing is mixed into the mist of oil torch.And carry out the large aperture air distribution at four angles, burner inner casing top, and make burner go out gas flow hole and be cut in an imaginary circle, cause air-flow rotation strongly in stove, formed the diffusion short burnout.Steady combustion cover is tapered, and has blade, at certain position air vent is arranged, because air-flow rotates strongly, produce negative pressuren zone at pivot, axial pressure gradient is during less than the tangential pressure gradient, and the center produces the recirculating zone, entrainment medium, flue gas burns, and improves the flame root temperature, has increased self circulating current temperature, make oil droplet quicken the vaporization evaporation and mix, burning velocity is accelerated.Steady combustion cover energy quick conductive produces high temperature, and oil is sprayed onto on the steady combustion cover and can evaporates rapidly, and vaporization belongs to the vaporation-type burning.

Burner described in the utility model can make full combustion of fuel, bottom surface flame is sky blue, do not tie carbon, smokeless, noise low (not being higher than 90 decibels), fuel consumption is 0.5-1.5Kg/h, reduce oil mass 30-40% than similar burner, ignition temperature reaches the 1000-1100 degree, improves the 200-300 degree than similar burner, the thermal efficiency reaches 91%, and caloric value reaches 7000-8000 kilocalorie/kilogram.In the combustion process, not large, medium and small can both not stopping working, smouldering fire does not take off fire, and is safe and reliable.This burner structure is simple, clears up easy to maintenancely, is widely used in the cooking stove class and uses, and changes a threeway needle-valve, and is can oily vapour fuel dual-purpose.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is the utility model cutaway view (an A-A face).

Fig. 2 is the utility model vertical view.

Among the figure, blast pipe 6 enters and carries out air feed in the burner urceolus 1, burner inner casing 2 is welded as a whole by top and burner urceolus 1, fresh air inlet 9 on it is 104, branches such as circumference are arranged, and line up six rows from top to bottom, and the first round spacing is 8-10mm, below 4 round spacings be 6-8mm, the 6th round spacing is 15-17mm.Revolve the 60-70 degree on first round, the 3rd round dextrorotation 10-15 degree, the 5th round dextrorotation 10-15 degree, there is big fresh air inlet 10 on burner inner casing 2 tops for four jiaos, form imaginary circle, quicken aerodynamic atomization, steady combustion cover 3 covers on the fuel nozzle 4, top is conical, and air vent 7 is arranged on the conical surface, also is welded with five blades 8.Burner inner casing 2 bottoms and fuel inlet tube 5 welding.

Claims (3)

1, a kind of energy-conservation low pressure atomising burner, form by blast pipe 6, fuel inlet tube 5, fuel nozzle 4, steady combustion cover 3, burner inner casing 2 and burner urceolus 1, blast pipe 6 taps in the burner urceolus 1, steady combustion cover 3 places on the fuel nozzle 4, it is characterized in that steady combustion cover 3 tops are taper, air vent 7 is arranged on the taper surface, surely fire in taper and to be welded with blade 8 on the cover, burner inner casing 2 and burner urceolus 1 are welded as a whole from top, burner inner casing 2 is the declivity taper type, row has fresh air inlet 9 on it, fixedlys connected with fuel inlet tube 5 in the bottom.

2,, it is characterized in that there is big fresh air inlet 10 on burner inner casing 2 tops for four jiaos according to the described burner of claim 1.

3, according to the described burner of claim 1, it is characterized in that the fresh air inlet 9 on the burner inner casing 2 is the arrangement of branches such as circumference, line up six rows from top to bottom, the first round spacing is 8-10mm, below 4 round spacings be 6-8mm, the 6th round spacing is 15-17mm, revolves the 60-70 degree on first round, the 3rd round dextrorotation 10-15 degree, the 5th round dextrorotation 10-15 degree.

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