JPH029229Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a heavy oil burner in a boiler combustion device.

FIG. 1 shows a furnace combustion apparatus for a general oil-fired boiler, where 1 is a heavy oil burner which is a main burner, and 2 is an ignition burner used to ignite the heavy oil burner 1.

As shown in FIGS. 2 to 4, the heavy oil burner 1 has a heavy oil pipe 4 and a steam pipe 5 installed in a jacket tube 3. The heavy oil pipe 4 and the steam pipe 5 are connected to the tip of the jacket tube 3. The heavy oil passages 8 and the steam passages 9 provided in the nozzle body 6 and the burner plate 7 are connected to each other, and the fuel oil and steam are connected at main nozzles 11 bored in the burner chip 10 at required intervals in the circumferential direction. The fuel is mixed and injected radially. Note that 12 is a chip nut, and 13 is a differential user.

On the other hand, in the ignition burner 2, as shown in FIG.
As shown in FIG. 6, the light oil flowing inside the atomizer main body pipe 17 is atomized by the steam in the steam (or air) pipe 18 arranged inside the main body pipe 17, and the nozzle tip 19 is pierced. It is injected from an ignition nozzle 20, and an igniter 15 is inserted into this jet stream to ignite it. Furthermore, 21 is a chip nut.

Conventionally, the light oil is injected from the atomizer 16, the igniter 15 is inserted into the jet stream to ignite it, and the flame resulting from this ignition is brought into contact with the jet stream from the heavy oil burner 1, thereby producing a heavy oil burner. It is set to ignite at 1. For this reason,
A push-pull device was required to push and pull the igniter 15 and the ignition burner 2 as a whole. Also atomizer 16
Since the flame from the heavy oil burner 1 comes in cross-contact with the jet stream from the heavy oil burner 1, the contact area is small and ignitability cannot necessarily be said to be good.

In view of these circumstances, the present invention improves ignitability,
Furthermore, the present invention aims to provide a heavy oil burner that can eliminate the need for a push/pull device for the entire ignition burner.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIGS. 7 to 9, a heavy oil pipe 4, a steam pipe 5, and a light oil pipe 22 are introduced into the jacket tube 3, and the pipes 4, 5, and 22 are connected to the nozzle body 6 and the burner plate 7. Each passage provided 8, 9, 23
The passages 8 and 9 are connected to the main nozzle 11 bored in the burner chip 10, and the light oil passage 23 and the steam passage 5 are connected to the burner chip 1.
0, the main nozzle 11 and the main nozzle 11 are connected to ignition nozzles 24 drilled at several locations at the same circumferential position to form a heavy oil burner 1'. Note that in FIGS. 7 to 9, the same reference numerals as in FIGS. 2 to 4 indicate the same parts.

In the heavy oil burner 1' of the present invention having such a configuration, when the heavy oil from the heavy oil passage 8 and the steam from the steam passage 9 are mixed and atomized and injected from the main nozzle 11 (injection flow A), at the same time, the steam passage 9 The steam from the fuel tank and the light oil from the light oil passage 23 are mixed and atomized and injected from the ignition nozzle 24 (injection flow B).
Therefore, this ignition nozzle 24 has a burner tip 10.
Since the main nozzle 11 and the main nozzle 11 are located at the same circumferential position, the jet flow B has a radially wide contact area with the jet flow A.

Therefore, as shown in FIG. 10, when fuel is injected from the heavy oil burner 1' and the igniter 15 is inserted into the injection stream B to ignite it, the injection stream A is immediately ignited and combustion occurs. In other words, although the heavy oil burner 1' of the present invention has almost the same shape and dimensions as the conventional heavy oil burner 1, it has a function that combines the heavy oil burner 1 and the atomizer 16, and has improved ignitability. . Further, for these reasons, the conventional ignition burner 2 and its push/pull device are not required, and only the igniter 15 needs to be provided in a push/pull manner, which is advantageous in terms of space.

In addition, in the above, when the ignition nozzle 24 is ON,
Turning off can be easily performed by opening and closing a valve (not shown) at the burner inlet. Also, ignition nozzle 24
When OFF, steam is injected from the ignition nozzle 24,
Prevent nozzle clogging and cool down.

As explained above, according to the heavy oil burner of the present invention, (i) the ignition nozzle is provided so as to be located on the same circumference as the main nozzles, which are provided in plurality at the tip of the burner chip; The jet stream can obtain a wide contact area with the jet stream from the main nozzle, improving ignition performance.

(ii) Since both the main nozzle and the ignition nozzle are provided on the burner chip, there is no need to separately install an ignition burner or its pushing/pulling device as in the past.

(iii) Since there is no need for an ignition burner, only the igniter needs to be made pushable or retractable, and the space for pulling out the ignition device can be shortened, and the piping around the burner can be simplified, which is advantageous in terms of space.

It can produce excellent effects such as

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram of a furnace combustion device equipped with a conventional heavy oil burner, Fig. 2 is a partially cutaway side view of a conventional heavy oil burner, Fig. 3 is a view in the direction of - arrow in Fig. 2, and Fig. 4
5 is an explanatory view of the ignition burner, FIG. 6 is a partially enlarged sectional view of FIG. 5, and FIG. 7 is a partially cutaway side view of the heavy oil burner of the present invention. 8 is a view taken along the - arrow in FIG. 7, FIG. 9 is a view taken along the - arrow in FIG. 7, and FIG. 10 is a schematic diagram of a furnace combustion apparatus equipped with a heavy oil burner according to the present invention. 3 is a jacket tube, 4 is a heavy oil pipe, 5 is a steam pipe, 6 is a nozzle body, 8 and 9 are passages, 10 is a burner tip, 11 is a main nozzle, 22 is a light oil pipe, 23 is a passage, and 24 is an ignition nozzle. .

Claims (1)

[Scope of utility model registration request] A heavy oil pipe, a injection medium pipe, and a light oil pipe are introduced into a jacket tube having a burner tip and a nozzle body at its tip, and the heavy oil pipe and the injection medium pipe are connected through respective passages provided in the nozzle body. A plurality of main nozzles are drilled on the same circumference at the tip of the burner tip, and the light oil pipe and the injection medium tube are connected to the tip of the burner nozzle through respective passages provided in the nozzle body. A heavy oil burner characterized in that the fuel oil burner is connected to an ignition nozzle drilled so as to be located on the same circumference as each main nozzle of the section.