CN2128341Y

CN2128341Y - Pneumatic spray burner

Info

Publication number: CN2128341Y
Application number: CN 92217226
Authority: CN
Inventors: 颜达明
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-26
Filing date: 1992-06-26
Publication date: 1993-03-17
Anticipated expiration: 2002-06-26

Abstract

The utility model discloses a pneumatic spray burner, relating to the oil burner for the industrial furnace and mainly comprising a fuel glowing nozzle, an overfire air shell, a vaporization bowl, the shell of a flame tube, etc. After the utility model is accelerated in a convergent contour wind guide tube utilizing the wind from a blower, the utility model generates the sharp edge separation effect twice at two gasification openings, and the fuel is cleanly burned. The utility model has the advantages of small loss of the flow resistance, easy ignition and operation, large ratio of flame adjustment, low operation and maintenance cost, etc., and the utility model is not easily to coke, collect fouling and leak oil. The utility model is suitable for the industrial furnace or the domestic furnace which burn various fuels, and the utility model can also be used as the potential energy device of the power device. The flame tube of the utility model is dismounted, so the utility model can also be used in the fields of the equipment for plant protection, such as the dispersing apparatus, the sprayer, the artificial rainfall, the dust remover, etc.

Description

Pneumatic spray burner

The utility model relates to a kind of used for industrial furnace fuel burner

Existing industrial-furnace burner oil atomization method has following several: one. mechanical atomization, the essential parts such as oil pump, motor, oil atomizer gun that are equipped with, oil pressure is delivered in the tangential slot of oil gun, after in groove, obtaining spinfunction, become the ejection of vertebra shape from oilhole again, when fuel delivery hour, the obvious deterioration of effect, and the aperture is too little very easily stops up; Two. pneumatic nebulization, though be fit to the burner of little oil mass, provide high-pressure air source with air compressor, power consumption is big, perhaps helps atomizing with steam, and then thermal energy consumption is excessive; Three. the two is comprehensive, and then structure is complicated.

Existing industrial-furnace burner has following several on the combustion-supporting method of falling wall temperature of air feed: reverse-flow, radial-flow type, why to so arrange air intake to, its objective is to add high wind and atomizing good oil mixes, also to produce backflow sometimes with cyclone, so as to the retention flame, this class air intake, air distribution, the weak point of reflux type is: the flow resistance loss of wind is big, the burner structure complexity is easily stopped up air gap oilhole and coking when burning inferior oil material.

The purpose of this utility model is to overcome above-mentioned weak point of the prior art, and provides a kind of energy to send the burner of fuel for twice forth.

The utility model is realized by following scheme, after the wind that utilizes air blast to send here quickens in the ventilating duct of convergent contour, sharp fate takes place from effect in the gasifying mouth at the scorching hot mouth of fuel of gradually expanded form, sent the fuel oil that gravity flow comes from the red-hot chamber of the scorching hot mouth of fuel forth, made it and a wind mixed combustion.Secondary wind then moves on along the air channel between gasification bowl and the secondary wind shell, the second hypocone fate takes place from effect at the rim of a bowl again in this wind, the separation effect of twice generation in front and back forces air-flow and the fuel in the burner that strong turbulent eddy group takes place, flame air and fuel promptly are able to stable burning, simultaneously, produce the expansion acceleration, carrying secretly from the fresh air of ejecting port inspiration, spray to burner inner liner, the remaining burning that does not burn down is crashed to pieces after vertebra smashes, also gasified under the hyperthermia radiation of the radiating layer in tube, and then burning is clean.

The utility model is a kind of air intake mode of following current, and its flow resistance loss is little, and ignition operation is convenient, be difficult for coking, incrustation and leakage of oil, flame is regulated than big, move advantages such as upkeep cost is low, be suitable for burning the industrial furnace or the domestic burners of various fuel, also can be used as the heat energy apparatus on the power-equipment.

Below in conjunction with accompanying drawing the utility model is further specified:

Accompanying drawing is a structural representation of the present utility model

See that accompanying drawing the utility model is by ventilating duct (1), block clearing plug screw (2), heat-insulation layer (3), cartridge (4), the scorching hot mouth of fuel (5) smashes vertebra (8), vaporization bowl (9), secondary wind shell (10), fire hole (11) radiating layer (12), thermal insulation layer (13), burner terminal pad (14), flame barrel shell (15), hinge (16), negative pressure ring (17), support (19), dog screw (22), blower fan terminal pad (24) is formed.The upstream extremity of ventilating duct (1) docks with air blast by blower fan terminal pad (24) and locatees, and restrain gradually in the downstream, and its cross section is flat garden shape, olive shape or ellipse garden shape, the half angle α of convergent contour ₂Between 0 °～30 °, and corresponding cross section secondary wind shell (10) butt joint that is flat garden shape, olive shape, ellipse garden shape with upstream extremity, the downstream flaring of secondary wind shell (10) becomes flat garden shape, olive shape, ellipse garden tee section, and half angle is α on it ₅Between 2 °～70 °, following half angle α ₆Between 2 °～60 °.The cross section is flat garden shape, ellipse garden shape or olive shape, the centre is a through hole, but an end is fixed with the scorching hot mouth of fuel (5) of block clearing plug screw (2) and is fixed in the ventilating duct (1) by dog screw (22) on the ventilating duct (1) and cartridge (4), the place ahead of the scorching hot mouth of fuel (5) is fixed with and smashes vertebra (8), can not establish yet and smash vertebra (8), the half angle α of the scorching hot mouth of fuel (5) gradually expanded form according to fuel oil type ₁Between 2 °～50 °, its openend of once vaporization mouth (21) at the scorching hot mouth of fuel (5) top can be crescent moon spade, crescent, wedge shape, also can see that section is W shape from overlooking, once the spray orifice (6) in the vaporization mouthful (21) is several, this hole can lead directly to, also can tiltedly lead to, heat-insulation layer (3) is included in the skin of the scorching hot mouth of fuel (5), also visual fuel band and do not need heat-insulation layer (3).The vaporization bowl (9) of gradually expanded form is positioned in the secondary wind shell (10) by support (19), it is zero secondary vaporizing mouth (20) until curvature that downstream has parabola shaped towards Way out, fire hole (11) that secondary vaporizing mouth (20) top is offered and the same hole of fire hole (11) on the secondary wind shell (10), the last half angle α of its flaring ₃Between 2 °～70 °, following half angle α ₄Between 2 °～60 °, vaporization bowl (9) cross section is flat garden shape, olive shape or ellipse garden shape.At flame barrel shell (15) upstream extremity and secondary wind shell (10) joint, along having ejecting port (18) on every side, ejecting port (18) is gone up and is hinged with negative pressure ring (17) by hinge (16), be lined with the radiating layer (12) that thermal insulation layer (13) that insulation material makes and heat proof material are made in the flame barrel shell (15), the port of export of flame barrel shell (15) docks with the furnace wall by burner terminal pad (14) and locatees, the draw ratio of flame barrel shell (15) is between 1:5, its cross section is flat garden shape, olive shape or ellipse garden shape, last half angle α ₇Between-30 °～60 °, following half angle α ₈Between-60 °～30 °.

When using the utility model, start air blast, the fuel that is driven into constant voltage fuel tank (25) by oil pump (7) flows automatically in the scorching hot chamber (23) of the scorching hot mouth of fuel (5) under the gravity effect through cartridge (4), after being heated out once vaporization mouthful (21), be vaporized the wind effect that bowl (9) shunting is come out immediately, produce the first hypocone fate from effect, fuel is sent forth with the wind together to come, at this moment, locate igniting at fire hole (11), obtain primary atomization when, and the fireworks that burning are when coming the secondary vaporizing mouth (20) of vaporization bowl (9), again and the secondary wind effect that comes of the air channel between secondary wind shell (10) and the vaporization bowl (9), sharp fate takes place once more from effect, impel fuel, air, flame the three further mixed, and the interior continuation vaporization of flame barrel shell (15) and then the burning that are ejected into band radiating layer (12) are clean.The gas-flow that quickens that obtains expanding in vaporization bowl (9) has caused ejecting port (18) simultaneously, the subnormal ambient of negative pressure ring (17) regional area, fresh air is sucked in the flame barrel shell (15) continuously, and negative pressure ring (17) is adjustable, so can adapt to the combustion requirements of multiple different stoves.Meanwhile, because of the distinguished and admirable air channel between vaporization bowl (9) and secondary wind shell (10) of secondary, cooled off vaporization bowl (9) in passing and made it not overtemperature.

In sum, the utility model is a kind of air intake mode of following current, the vaporization bowl (9) of flaring and secondary wind shell (10) add the gasifying mouth (21) of twice generation in energy front and back point fate from effect, (20), cooperate blast tube with long and short shaft section feature, cause whole flow field velocity skewness and produce vortex sheet and recirculating zone, make combustion gas arrive flame barrel shell (15) before simultaneously, twice strong turbulent eddy group just taking place in gasification bowl rub, thereby has reached the blending purpose completely of burning.

If cancellation flame barrel shell (15) and ejecting port (18); the utility model also can operate as normal; flame will increase this moment; small amount of fuel burns down in burner hearth; this not with the simple spraying mechanism of burner inner liner; also can be widely used in disperser, sprayer in the equipment for plant protection, rain making, fields such as deduster.

Claims

1, air-driven ejection burner, comprise ventilating duct (1) block clearing plug screw (2), heat-insulation layer (3), the scorching hot mouth of cartridge (4) fuel (5), smash vertebra (8), vaporization bowl (9), secondary wind shell (10), fire hole (11), radiating layer (12), thermal insulation layer (13), burner terminal pad (14), flame barrel shell (15), hinge (16), negative pressure ring (17), support (19), dog screw (22), blower fan terminal pad (24), the upstream extremity of guide cylinder (17) docks with air blast by blower fan terminal pad (24) and locatees, and it is characterized in that: the downstream of ventilating duct (1) is docked with secondary wind shell (10) upstream extremity, and the downstream of secondary wind shell (10) is docked with flame barrel shell (15).The top is fixed with the scorching hot mouth of fuel (5) that smashes vertebra (8) and is positioned in the ventilating duct (1) by dog screw (22) and cartridge (4), its outside is contained by heat-insulation layer (3), vaporization bowl (9) is positioned in the secondary wind shell (10) by support (19), downstream towards the with good grounds fuel band of Way out different and offer parabola shaped be zero secondary vaporizing mouth (20) until curvature, fire hole (11) and the same hole of two crusts of weathering (10) fire holes (11) that secondary vaporizing mouth (20) top is offered, at flame barrel shell (15) upstream extremity and secondary wind shell (10) joint, along having ejecting port (18) on every side, ejecting port (18) is gone up and is hinged with negative pressure ring (17) by hinge (16), be lined with thermal insulation layer (13) that insulation material makes and the radiating layer made from refractory material (12) in the flame barrel shell (15), the draw ratio of flame barrel shell (15) between 1: 5, the last half angle α of flame barrel shell (15) ₇Between-30 °～60 °, following half angle α ₈Between-60 °～30 °, its cross section is flat garden shape, olive shape or ellipse garden shape.

2, air-driven ejection burner according to claim 1 is characterized in that: restrain gradually in ventilating duct (1) downstream, and its cross section is flat garden shape, olive shape or ellipse garden shape, the half angle α of its convergent contour ₂Between 0 °～30 °.

3, air-driven ejection burner according to claim 1 is characterized in that: the cross section is a flat garden shape, olive shape or ellipse garden shape, the half angle α of the gradually expanded form of the middle scorching hot mouth of fuel (5) that is fixed with block clearing plug screw (2) for through hole one end ₁Between 2 °～50 °, its openend of once vaporization mouth (21) at the scorching hot mouth of fuel (5) top can be crescent, the crescent moon spade, wedge shape also can see that section is W shape from the direction of overlooking, and once the spray orifice (6) in the vaporization mouthful (21) is several, this hole can lead directly to, and also can tiltedly lead to.

4, air-driven ejection burner according to claim 1 is characterized in that: vaporization bowl (9) cross section of gradually expanded form is flat garden shape, olive shape or ellipse garden shape, the last half angle α of its flaring ₃Between 2 °～70 °, following half angle α ₄Between 2 °～60 °.

5, air-driven ejection burner according to claim 1 is characterized in that: its cross section of the secondary wind shell of gradually expanded form (10) is flat garden shape, olive shape or ellipse garden shape, the last half angle α of flaring ₅Between 2 °～70 °, following half angle α ₆Between 2 °～60 °.

6, air-driven ejection burner according to claim 1; it is characterized in that: desirable quench flame barrel shell (15); thermal insulation layer (13); radiating layer (12), ejecting port (18), negative pressure ring (17); hinge (16); then be equal to the disperser in burner or the equipment for plant protection, sprayer, deduster.

7, air-driven ejection burner according to claim 1, the scorching hot mouth (5) that it is characterized in that burning can not established according to the situation of fuel band yet and is smashed vertebra (8).