JP5507720B1 - Automatic ignition type oil burner - Google Patents

Abstract

To provide an oil burner capable of simultaneously realizing instant ignitability of a gun type burner and complete combustion (blue fire combustion) of a Bunsen type burner, and capable of significantly reducing power consumption.
A main burner section (1) includes a fuel oil pipe (4), an annular vaporization pipe (5) communicating with the fuel oil pipe, and a main burner nozzle that ejects vaporized fuel oil from the vaporization pipe. And a combustion section (10) having a plurality of slits (9) formed radially from the vaporized fuel oil ejected from the main burner nozzle, and the sub-burner section (2) A fuel oil pipe (12) having a sub-burner nozzle (11), an ignition electrode (13) for igniting the fuel oil ejected from the sub-burner nozzle, and a vaporization pipe by a flame of fuel oil from the ignited sub-burner nozzle A self-ignition oil burner provided with a preheating part (14) for preheating a part of
[Selection] Figure 3

Description

The present invention is used in cooking ovens for outdoor cooking cars, etc., and relates to an auto-ignition oil burner that uses fuel oil such as kerosene, and is particularly resistant to red fire and easy to reignite after extinguishing, The present invention relates to an automatic ignition type oil burner that consumes significantly less power than a conventional oil burner.

Conventional oil burners are roughly classified into two types: gun type burners and Bunsen type burners.
The gun type burner is a burner that ignites and ignites oil by combining a fan that sends air and a pressure spray type burner (a burner that applies pressure to oil and ejects it from a nozzle part). The gun type burner has the advantage that it can be ignited immediately and consumes less power, but it is red fire during combustion, and the range of adjustment of the combustion amount is narrow, and hydrocarbon fuel is burned while adjusting the thermal power. It is extremely difficult to achieve a blue fire that is in a complete combustion state.
On the other hand , the Bunsen type burner is disclosed in, for example, Patent Document 1, and is a type of burner that generates a mixture of fuel oil gas and air before a crater and discharges the mixture from the crater and burns it. While in the case of cooking burners etc. firepower is easy to complete combustion of hydrocarbon fuel (blue fire burning), it is necessary preheating device of the cartridge heater or the like to preheat before combustion, thus Needed a lot of power.
In addition , it often takes a considerable time to achieve complete combustion stably.

Japanese Patent Laid-Open No. 5-322117

The present invention has been made for the purpose of solving the problems of the conventional oil burners described above, and realizes the immediate ignitability of the gun type burner and the complete combustion (blue fire combustion) of the Bunsen burner at the same time. In addition, it is an object of the present invention to provide an automatic ignition type oil burner capable of significantly reducing power consumption.

The present inventors have result of repeated experiments and studies, but conventional for the preheating of the fuel has been used more apparatus of cartridge heaters or the like power consumption, using a gun type burner as sub burner Alternatively It has been found that the use of electric power can be remarkably reduced by preheating the fuel oil of the main burner, and the present invention has been achieved.

That is, the first configuration of the present invention that achieves the object of the present invention includes a main burner unit that completely burns fuel oil, and a sub-burner unit that preheats the fuel oil to an ignitable temperature, that is, a vaporization temperature in a part of the main burner. An automatic ignition type oil burner comprising:
The main burner section includes a fuel oil pipe connected to a fuel supply source, an annular vaporization pipe communicating with the fuel oil pipe, and a vaporized fuel oil from the vaporization pipe at a downstream end of the vaporization pipe A main burner nozzle for blowing air, an air suction pipe for supplying air to the vaporized fuel oil jetted from the main burner nozzle, a hollow portion communicating with the air suction pipe, and a radial shape above the hollow portion A combustion section having a plurality of slits formed,
A part of the sub-burner is connected to a fuel supply source, a fuel oil pipe having a sub-burner nozzle at a downstream end, an ignition electrode for igniting fuel oil ejected from the sub-burner nozzle, and a main burner part A preheating part that is formed adjacent to a part of the vaporization pipe and preheats a part of the vaporization pipe with a flame of fuel oil from the ignited sub-burner nozzle;
A temperature sensor is provided at the outlet of the vaporizing pipe, and when the operation of the oil burner is started, the fuel oil is supplied only to the fuel oil pipe of the sub burner portion, and the fuel oil ejected from the sub burner portion is ignited. When combustion starts, supply of fuel oil to the fuel oil pipe of the main burner section is started, and when it is confirmed by the temperature sensor that the temperature of the fuel oil pipe of the main burner section has reached a predetermined temperature, A control mechanism for stopping the supply of fuel oil to the fuel oil pipe of the sub-burner unit;
The auto-ignition oil burner is characterized in that the vaporized fuel oil rising from the slit of the combustion portion of a part of the main burner is ignited by a flame from the sub-burner nozzle and starts combustion.

  According to a second configuration of the present invention, in addition to the first configuration, a part of the vaporization tube is formed in a spiral portion wound in a spiral shape, and the preheating portion is supplied from the sub-burner nozzle. An auto-ignition type oil burner having a portion for preheating the spiral portion by a flame and a portion for preheating the vaporizing tube by a tip portion of the flame from the sub-burner nozzle.

  According to the first configuration of the present invention, a gun type burner type sub-burner unit is used to preheat the fuel oil to an ignitable temperature, that is, a vaporization temperature, in the main burner unit that completely burns the fuel oil. It is no longer necessary to use an electric heater that consumes a large amount of power, and power consumption can be reduced by up to 70%. In addition, it is possible to eliminate the disadvantages of being burned out in an empty-fired state as in the case of a conventional electric heater, and having low durability due to the high temperature of the heat generating part.
  Also, by using a gun-type sub-burner instead of an electric heater, a small high-voltage transformer can be used for ignition, saving the number of parts and saving power consumption in ignition. Can do. Moreover, preheating takes less time than conventional electric heaters, and furthermore, only fuel oil passes through the fuel oil piping, so there is less risk of backfire. Further, the red fire state can be reduced as much as possible by switching the fuel oil piping of a part of the sub-burner used for ignition and preheating and the fuel oil piping of a part of the main burner that completely burns the fuel oil.

In addition, the conventional oil burner was premised on the use of kerosene as the fuel oil, but according to the present invention, because the calorific value of the sub-burner portion is large, the preheating and vaporization efficiency of the fuel oil is high. Fuel oil below kerosene such as light oil and heavy oil that could not be used conventionally can also be used. Also , unlike conventional electric heaters , in addition to the power supplied from household power sources, it is possible to supply power from small power sources such as simple solar panels and batteries, and there are a variety of places and applications. Is expected.

  Furthermore, according to the present invention, a fuel is provided that includes a temperature sensor installed at the outlet of the vaporization pipe, supplies fuel oil only to the fuel oil piping of a part of the sub-burner at the start of operation of the oil burner, and is ejected from the sub-burner section. When the oil is ignited and combustion starts, supply of fuel oil to the fuel oil piping of the main burner section is started, and when the temperature sensor confirms that the temperature of the fuel oil piping of a part of the main burner has reached a predetermined temperature, Since it has a control mechanism that stops the supply of fuel oil to the fuel oil piping of the burner section, ignition of the sub burner section, switching of fuel oil supply to the fuel oil piping of the sub burner section and main burner section, main burner section A series of operations of ignition and combustion can be automatically controlled and performed, and the work is simple and easy.

Further, according to the second configuration of the present invention, a part of the vaporizing tube is spirally wound to be formed in the spiral portion, and the preheating portion preheats the spiral portion by the flame from the sub burner nozzle. And a portion that preheats the vaporization tube by the tip of the flame from the sub-burner nozzle, so that the vaporization tube is preheated at two locations preheated by the spiral portion and the flame tip. Heat is rapidly transferred and the fuel oil in the vaporization pipe can be rapidly and efficiently preheated to the vaporization temperature.

It is a top view of the auto ignition type oil burner of the present invention. It is a cross-sectional side view which shows the structure of the principal part of a main burner part. It is a cross-sectional side view which shows the structure of the principal part of a subburner part. It is explanatory drawing which shows the ignition state of the fuel oil of a main burner part. It is explanatory drawing which shows the structure of a main burner nozzle.

Embodiments of the autoignition oil burner of the present invention will be described below with reference to the accompanying drawings.
Referring to FIGS. 1, 2, and 3, an automatic ignition type oil burner according to the present invention includes a main burner portion 1 that completely burns fuel oil and a temperature at which fuel oil can be ignited in the main burner part 1, that is, a vaporization temperature. And a sub-burner part 2 for preheating.

The main burner part 1 includes a fuel oil pipe 4 (FIG. 3) connected to a fuel supply source (not shown) via a fuel pump 3, an annular vaporization pipe 5 communicating with the fuel oil pipe 4, and a vaporization A main burner nozzle 6 (FIG. 2) that ejects vaporized fuel oil from the vaporization pipe 5 at the downstream end of the pipe 5, and air that supplies air to the vaporized fuel oil ejected from the main burner nozzle 6 a suction pipe 7 (FIG. 2), a combustion section 10 having a hollow portion 8 which is called a earthenware teapot in communication with the air intake pipe 7 (FIG. 2), a plurality of slits 9 formed radially above the hollow portion ( 1). Reference numeral 16 is a vaporizing tube retainer ring.

On the other hand , the sub-burner part 2 is connected to a fuel supply source (not shown) via a fuel pump 3, and has a fuel oil pipe 12 having a sub-burner nozzle 11 (FIG. 3) at the downstream end, and a sub-burner nozzle. The ignition electrode 13 for igniting the fuel oil ejected from 11 and a flame of the fuel oil from the sub-burner nozzle 11 formed and ignited adjacent to a part of the vaporization pipe 5 of the main burner section 1 A preheating part 14 (FIG. 3) for preheating a part is provided, and the subburner part 2 is accommodated in a subburner accommodating tube 15 as shown in FIG. Air is fed into the pipe by the electric fan 17 to the fuel oil pipe 12 of the sub burner unit 2 (FIG. 1), also the pipe 12 have been pressure spraying device (not shown) is mounted, fuel delivered to the pipe 12 The oil is atomized and sprayed from the sub burner nozzle 11.

Ignition electrode 13 is the high voltage transformer 18 (Fig. 1, Fig. 3) is connected to, is more ignited high voltage from the high voltage transformer 18. The ignited fuel oil burns as a fuel oil flame 19 from the sub-burner nozzle 11, and the tip of the flame is discharged to the outside from the tip of the sub-burner housing pipe 15.

As shown in FIG. 3, a part of the vaporizing tube 5 is spirally wound to form a spiral part 5 a, and the preheating part 14 preheats the spiral part 5 a with a flame from the sub-burner nozzle 11. since having a portion and a portion to preheat the portion 5b that is the second preheating the vaporization tube 5 by the tip portion of the flame from the sub burner nozzle 11, the portion 5b (Fig being preheated by the tip portion of the helical portion 5a and the flame 3 (a), see FIG. 3 (b) viewed from the right side in FIG. 3 (a)), by preheating the vaporization pipe 5, heat is rapidly transmitted to the entire vaporization pipe 5 and fuel oil in the vaporization pipe 5 is removed. It can be preheated quickly and efficiently to the vaporization temperature.

The control mechanism 23 (FIG. 1) comprising the controller AS Y 21 and the electromagnetic valve ASSY 22 switches the ignition of the sub-burner unit 2 and the supply of fuel oil to the fuel oil pipes 12 and 4 of the sub-burner unit 2 and the main burner unit 1. A series of operations of ignition and combustion of the main burner unit 1 are automatically controlled and performed. Control mechanism includes a temperature sensor 24 disposed in the outlet of the vaporizing tube (Fig. 1), the fuel oil is supplied only to the fuel oil pipe 12 of the operation start times sub-burner part 2 of the oil burner, sub-burner part 2 When the fuel oil ejected from the fuel is ignited and combustion starts, in addition to supplying fuel to the fuel oil pipe 12 of the sub-burner part 2, fuel oil supply to the fuel oil pipe 4 of the main burner section 1 is started, and the sensor When it is confirmed by 24 that the temperature of the fuel oil pipe of the main burner section has reached a predetermined temperature, the supply of fuel oil to the fuel oil pipe 12 of the sub burner section 2 is stopped. The vaporized fuel oil rising from the slit 9 of the combustion section 10 of the main burner part 1 is ignited by the flame from the sub burner nozzle 11 and starts combustion.

An example of the detailed structure of the main burner nozzle 6 is shown in FIG. As shown in FIG. 5B, the main burner nozzle 6 has an inlet 6a and an outlet 6b for gasified fuel oil. Inside the nozzle 6, a spindle 25 for a main burner nozzle shown in FIG. Is provided to penetrate. Reference numeral 25a denotes a spindle tip portion disposed at the nozzle tip portion, and 25b denotes a packing for preventing leakage. A main burner heating power adjustment cock 26 is attached to the rear end portion of the spindle 25. The thermal power adjustment can be adjusted by rotating the main burner thermal power adjustment cock 26. When the heating power adjustment cock 26 is rotated, the main burner nozzle spindle 25 is operated, and the spindle tip 25a moves back and forth. If the tip moves and the gap increases, more fuel oil is injected and the thermal power increases, and if the gap decreases, the fuel oil injection decreases and the thermal power decreases. Moreover, clogging can be removed even when a carbon portion is generated in the preheating portion by moving the spindle tip portion back and forth during the adjustment of the thermal power. That prevents clogging by moving back and forth the spindle tip 2 5a, may be to facilitate the return even if the jammed.

Next , the operation of the automatic ignition type oil burner having the above configuration will be described.
By operating the control mechanism 23, first , fuel oil is supplied only to the fuel oil pipe 12 of the sub-burner part 2 without supplying fuel to the fuel oil pipe 4 of the main burner section 1. Atomized fuel oil is injected from the nozzle 11 of the sub-burner unit 2.
Then it ignited using the spark of the high voltage ignition electrode 13 disposed in the vicinity of the outlet of the sub burner nozzle 1 1. Air necessary for combustion is supplied by an electric fan 17. The ignited fuel oil becomes a flame 19 and the front end of the flame is discharged to the outside from the front end of the sub-burner housing tube 15.

The vaporization tube 5 is preheated at two locations, the spiral portion 5a of the vaporization tube of the main burner portion 1 and the portion 5b preheated by the flame tip portion by the flame of the fuel oil ignited in the sub burner portion 2.
At the same time as the sub-burner unit 2 is ignited and combustion starts, the control mechanism operates to start supplying the fuel that has been sent only to the fuel oil pipe 12 to the fuel oil pipe 4 of the main burner part 1. The fuel oil passing through the pipe 4 is heated by passing through the preheated vaporization pipe 5, and is injected from the main burner nozzle 6 in a preheated and vaporized state up to an ignitable temperature (gasification temperature). The gasified fuel oil passes from the main burner bottle 8 through the radial slit 9 of the combustion section 10 of the main burner part 1 and comes into contact with the flame 19 of the sub burner part 2 to form a main burner flame 27 (FIG. 4). Ignite and burn. When the fuel oil in the main burner unit 1 is ignited, vaporization of the gasified fuel oil injected from the nozzle 6 is promoted, and air is sucked into the air suction pipe 7 due to the venturi effect. Further , due to the effect of the upward airflow of the main burner flame 27, air is further sucked into the air suction pipe 7 under the main burner flame 27. Thus, the secondary air necessary for continuing the combustion is supplied as natural intake air through the air intake pipe 7. Further , when the main burner flame 27 is in contact with the vaporizing pipe 5 , vaporization of the fuel oil is further promoted, and the fuel oil passing through the fuel oil pipe 4 of the main burner section 1 is heated to the extent that the sub burner flame 19 is unnecessary.

  When it is confirmed by the sensor 24 that the temperature of the fuel oil in the fuel oil pipe 4 is stabilized to complete combustion, the control mechanism 23 operates to stop the operation of the sub-burner part 2 and the operation of the electric fan 17. Thus, after that, complete combustion in the main burner section 1 continues.

DESCRIPTION OF SYMBOLS 1 Main burner part 2 Sub burner part 3 Fuel pump 4, 12 Fuel oil piping 5 Vaporization pipe 6 Main burner nozzle 7 Air suction pipe 8 Hollow part 9 Slit 10 Combustion part 11 Sub burner nozzle 13 Ignition electrode 15 Sub burner accommodation pipe 23 Control mechanism
24 Temperature sensor

Claims (2)

An auto-ignition oil burner comprising a main burner part for completely burning fuel oil and a sub-burner part for preheating the fuel oil to an ignitable temperature, that is, a vaporization temperature in a part of the main burner,
The main burner section includes a fuel oil pipe connected to a fuel supply source, an annular vaporization pipe communicating with the fuel oil pipe, and a vaporized fuel oil from the vaporization pipe at a downstream end of the vaporization pipe A main burner nozzle for blowing air, an air suction pipe for supplying air to the vaporized fuel oil jetted from the main burner nozzle, a hollow portion communicating with the air suction pipe, and a radial shape above the hollow portion A combustion section having a plurality of slits formed,
A part of the sub-burner is connected to a fuel supply source, a fuel oil pipe having a sub-burner nozzle at a downstream end, an ignition electrode for igniting fuel oil ejected from the sub-burner nozzle, and a main burner part A preheating part that is formed adjacent to a part of the vaporization pipe and preheats a part of the vaporization pipe with a flame of fuel oil from the ignited sub-burner nozzle;
A temperature sensor is provided at the outlet of the vaporizing pipe, and when the operation of the oil burner is started, the fuel oil is supplied only to the fuel oil pipe of the sub burner portion, and the fuel oil ejected from the sub burner portion is ignited. When combustion starts, supply of fuel oil to the fuel oil pipe of the main burner section is started, and when it is confirmed by the temperature sensor that the temperature of the fuel oil pipe of the main burner section has reached a predetermined temperature, A control mechanism for stopping the supply of fuel oil to the fuel oil pipe of the sub-burner unit;
An auto-ignition type oil burner characterized in that vaporized fuel oil rising from a slit of the combustion part of a part of the main burner is ignited by a flame from the sub-burner nozzle and starts combustion.   A part of the vaporizing tube is formed in a spiral portion wound in a spiral shape, and the preheating portion includes a portion for preheating the spiral portion by a flame from the sub burner nozzle and a portion from the sub burner nozzle. 2. The automatic ignition type oil burner according to claim 1, further comprising a portion for preheating the vaporizing tube with a flame tip.

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