CN1099544C - Combustion apparatus - Google Patents

Abstract

To once keep temperature of a vaporizer high at all times in a combustion device equipped inside a burner-case with a blower for feeding secondary air by interposing a heat-shield guide member between the vaporizer and the burner-case in order for the secondary air not to flow directly about the periphery of the vaporizer. In a combustion device equipped with a blower 16 which feeds secondary air into a burner-case 14 through a secondary-air-feeding pipe 15, a heat-shield plate 22 is provided between a vaporizer 1 and the peripheral wall 14B of the burner-case 14 in a manner of enclosing the vaporizer 1 at its periphery. Fixing parts at the lower end of this heat-shield plate 22 are spot-welded to the bottom wall 14A of the burner-case 14. Furthermore a blow guide 23 is provided in a manner of covering the outlet 15A of the secondary-air- feeding pipe 15. As a result, secondary air A flowing from the outlet 15A is directed sideways by the blow guide 23 and sent between the heat-shield plate 22 and the peripheral wall 14B without directly touching the peripheral wall of the vaporizer 1.

Description

Burner

The present invention relates to be used on the equipment such as oil boom blower fan or the dim device of oil boom elegance with the burner that burns behind the liquid fuel gasification.

The structure of this burner such as Fig. 6 and shown in Figure 7.

As shown in Figure 6, label 1 is the band round-ended cylinder shape gasifier of expression with mold casting forming, is embedded with the electric heater 2 of the gasification usefulness that is used for heating and gasifying device 1 on the top of its perisporium.

Be heated after electric heater 2 energisings of gasifier 1 because of gasification usefulness, but the igniting back is owing to the heat feedback of flame heat, so even stop energising, gasifier 1 also can maintain the condition of high temperature.

On the perisporium of gasifier 1, be provided with air nozzle parts 3, and its air funnel 4 with supply primary air B in gasifier 1 is connected.At the center of air funnel 4 fuel nozzle 5 is arranged, its front end protrudes in gasifier 1 by air nozzle parts 3.The other end of fuel nozzle 5 is connected with fuel reservoir 17 by fuel feed pump 21, and the centre is provided with electromagnetic pump 18, and electromagnetic pump 18 is used for the liquid fuel suction pressure in the fuel reservoir 17 is sent into above-mentioned fuel nozzle 5.Eject by the liquid fuel of electromagnetic pump 18 pumpings front end, and then make its gasification, and mix with the primary air B that infeeds by air funnel 4 by air blast 16 and to form mist by the heat of gasifier 1 from fuel nozzle 5.

Label 6 is middle choke blocks that are provided with throttling path 6A, and it is installed in the top in the gasifier 1.Be provided with a deflection plate 7 and thereunder face throttling path 6A.In addition, burner head parts 8 are installed, on the diapire 8A of burner head parts 8, are drilled with many passages 9, on its perisporium 8B, be drilled with a plurality of fire holes 10, and fire hole wire netting 11 is installed inside and outside perisporium 8B in the upper end open portion of gasifier 1.

Label 12 is that expression is used for heat that fire hole 10 the is sent ring-type fire ring towards gasifier 1 conduction, its be installed in gasifier 1 the upper end and around burner head parts 8.And, on its ring-type wall 12A, be provided with many longitudinal slots 13 facing to the burner head parts 8 of above-mentioned fire hole 10.

Label 19 expression igniters are used to light the mist from fire hole 10 ejections of burner head parts 8, and label 20 is flame rods that expression is used to detect its flame.

14 of labels are the band bottom tube-like burner housings that gasifier 1 periphery is located in expression.The upper end open 15A that is connecting auxiliary air pipe 15 on diapire 14A by auxiliary air pipe 15, is infeeded auxiliary air A by air blast 16 inside of burner housing 14.The auxiliary air A that infeeds flows in the fire ring 12 on top, so that the mist of being lighted by igniter 19 burns well by the space between the perisporium 14B of gasifier 1 and burner housing 14.

But, when using the high liquid of evaporating temperature to burn, for obtaining good combustion position, the temperature of gasifier 1 must be higher, but, the structure of gasifier 1 according to the above description, the auxiliary air A that enters from auxiliary air pipe 15 is fed directly to the periphery of gasifier 1 and contacts with perisporium, like this, the auxiliary air A of inflow has just cooled off gasifier 1, and the temperature of gasifier 1 itself can not be reached and often remains on the condition of high temperature, like this, fail gasification from the vaporising fuel of burner noz(zle) 5 ejection, unburned gas is detained and stinks, thereby cause prominence and tar to adhere to.

The object of the present invention is to provide a kind of well behaved burner.This burner can be eliminated above-mentioned defective, owing to can often keep the temperature of gasifier 1 to be in the condition of high temperature, does not therefore have the appearance that abnormal combustion and tar adhere to, and also can keep good combustibility to the high liquid fuel of evaporating temperature.

Therefore, be provided with the burner head parts that make the mist burning in the burner of the present invention, make the gasifier of liquid fuel gasification, burner housing around this gasifier setting, be connected the auxiliary air pipe of burner housing bottom and the air blast of in above-mentioned burner housing, supplying air by this auxiliary air pipe, its feature mainly shows, for making auxiliary air not be fed directly to the periphery of above-mentioned gasifier, be provided with heat insulation ways between above-mentioned gasifier and said burner shell, this heat insulation ways is by being constituted around the thermal insulation board of gasifier periphery with by the airstream deflector that makes the slit of secondary air streams between above-mentioned thermal insulation board and said burner shell be arranged on an end opening in auxiliary air pipe exit of holding up from the bottom wall of burner housing.

According to said structure, because be provided with heat insulation ways between gasifier and burner housing, auxiliary air is not fed directly to the periphery of gasifier, so gasifier can reach and can remain on certain high state of temperature.

Specifically, exactly rely on airstream deflector to change direction, it is laterally flowed between thermal insulation board and the burner housing perisporium from the auxiliary air that the outlet of auxiliary air pipe is flowed out.

Now, describe purpose of the present invention, structure and characteristics thereof in detail by the description of relevant drawings and the specific embodiments.Wherein:

Fig. 1 is vertical sectional drawing of burner of the present invention;

Fig. 2 is the cross-sectional view of burner;

Fig. 3 is the structural perspective of thermal insulation board;

Fig. 4 is mounted in the airstream deflector on the burner and the sectional view of auxiliary air pipe; With

Fig. 5 is the structural perspective of airstream deflector.

Burner of the present invention structurally except that be provided with below will chat and the heat insulation ways 24 that constitutes by thermal insulation board 22 and airstream deflector 23, burner in the past shown in remainder and Fig. 6 and Fig. 7 is identical, below only the structure as the above-mentioned heat insulation ways 24 of feature of the present invention is illustrated.

In Fig. 1 and Fig. 2, label 22 is expression thermal insulation boards, and it is between the perisporium 14B of gasifier 1 and burner housing 14, and the periphery that centers on gasifier 1 is provided with.Thermal insulation board 22 is a semi-cylindrical shaped as shown in Figure 3, and the standing part 22A that is arranged on its bottom is fixed on the diapire 14A of burner housing 14 with spot welding.

Label 23 among Fig. 2 is expression airstream deflectors, and its outlet 15A that is arranged on above-mentioned auxiliary air pipe 15 goes up and will export 15A and covers.Airstream deflector 23 as shown in Figure 5, the one end opening is a コ font guide groove, it is that the diapire 14A that is fixed on burner housing 14 goes up and makes this peristome towards above-mentioned thermal insulation board 22.Like this, as shown in Figure 4, the auxiliary air A that flows into from outlet 15A changes its flow direction into lateral flow through airstream deflector 23, shown in arrow among Fig. 2, does not directly contact the perisporium of gasifier 1 and is fed between the perisporium 14B of thermal insulation board 22 and burner housing 14.

Specifically, in the present embodiment, heat insulation ways 24 is set around the gasifier 1, gasifier 1 can not cooled off by the auxiliary air of sending into from the auxiliary air pipe, auxiliary air A is fed between the perisporium 14B of thermal insulation board 22 and burner housing 14, and such version makes the temperature of gasifier 1 can reach and remain on the certain high temperature state.Therefore, when the running beginning, by electric heater 2 heating of gasification usefulness, after the burning beginning, then the heat feedback by flame makes gasifier 1 often maintain 350～400 ℃ the condition of high temperature.Therefore, even when using the high liquid fuel of evaporating temperature, also can obtain good burning, and can prevent that abnormal combustion and tar from adhering to.

In addition, in the embodiment of the invention, the example that is provided with semicircle tubular thermal insulation board 22 around gasifier is described, but is not limited to this, also can adopt the version of directly wrapping up insulation material etc. in the periphery of gasifier 1.

As described above, have the burner head parts that make the mist burning in the burner of the present invention, make the gasifier of liquid fuel gasification, burner housing around this gasifier setting, be connected the auxiliary air pipe of burner housing bottom and the air blast of in above-mentioned burner housing, supplying air by this auxiliary air pipe, its principal character shows, for making auxiliary air directly not flow through the periphery of above-mentioned gasifier, and heat insulation ways is set between above-mentioned gasifier and said burner shell, so, gasifier can directly not cooled off by auxiliary air, the temperature of gasifier can often maintain the condition of high temperature, like this, just do not have abnormal combustion and tar adheres to, also can use the high liquid fuel of vapo(u)rability and the combustion efficiency that obtains.

In the accompanying drawing:

1 gasifier, 2 burner head parts

The diapire of 14 burner housing 14A burner housings

The outlet of 15 auxiliary air pipe 15A auxiliary air pipes

16 air blasts, 22 thermal insulation boards

23 airstream deflectors, 24 heat insulation ways A auxiliary airs

Claims (1)

1. burner, it includes: the burner head parts that make the mist burning; Make the gasifier of liquid fuel gasification; Burner housing around this gasifier setting; Be connected the auxiliary air pipe of burner housing bottom; In above-mentioned burner housing, supply the air blast of air by this auxiliary air pipe, it is characterized in that, for making auxiliary air not flow directly into the periphery of above-mentioned gasifier, between above-mentioned gasifier and said burner shell heat insulation ways is set, this heat insulation ways is by being constituted around the thermal insulation board of gasifier periphery with by making auxiliary air flow into the airstream deflector that is arranged on an end opening in auxiliary air pipe exit between above-mentioned thermal insulation board and the said burner shell of holding up from the bottom wall of burner housing.

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