JPH02126003A - Method of burning fuel oil and combustion device using the same - Google Patents

Abstract

PURPOSE:To enable a complete combustion to be carried out by a method wherein flowing fuel oil is electrically processed by a rod-like electric charger having an extreme end electrically closed within a fuel oil supplying pipe at a location of a burner and then the fuel is ignited. CONSTITUTION:A rod-like electric charger 1 along a flowing direction of fuel oil is installed at a center of a fuel oil supplying pipe 12 within a burner installed at a center part of a burner 8. The electrical charger 1 is removably fixed at a rear edge of the burner 8 under its electrical insulated state, its front edge is electrically closed to form a canti-lever rod having a free end. An electrical charge generating part 2 connected by an electrical conductive line 13 is arranged at a rear end of the electrical charger 1. An electrical charge of any condition, for example, 60 Herz, 3000 to 6000 Volts and 0.5mA is applied to the electrical charger 1, flowing fuel oil is electrically processed by the electrical charger 1 acting as a charged state of an AC high voltage fine current and immediately the fuel is injected from a burner nozzle 14 so as to be burnt.

Description

Detailed Description of the Invention "Field of Industrial Application" The present invention is applicable to combustion of fuel oil when burning fuel such as kerosene or light oil/heavy oil in, for example, a kerosene stove, a kerosene stove, a boiler, or an industrial kiln. The present invention relates to a combustion method and a combustion apparatus using the combustion method.

``Prior art'' In commonly used kerosene stoves, kerosene stoves, or industrial kilns, fuel oil such as kerosene, light oil, and heavy oil is used for heating,
In order to burn the fuel for different purposes such as heating, the lower part of the wick is immersed in fuel oil, the fuel oil is sucked up, and the fuel oil is gradually vaporized in a layer on the upper end of the wick. Two methods are used: to ignite the atomized fuel oil using a burner that atomizes and injects the fuel oil, and to ignite the atomized fuel oil. In order to facilitate combustion and prevent incomplete combustion, use combustion equipment such as wick materials and burners of various structures, and combustion air supply mechanisms, as well as preheating the fuel oil and combustion air, or adding combustion aids. Measures are being taken to promote combustion.

"Problem to be Solved by the Invention" However, with any of the above combustion methods, the combustion state of fuel oil is greatly affected by excess or deficiency of combustion air and changes in environmental temperature, resulting in incomplete combustion or They have common disadvantages such as being prone to excessive air phenomena, and such adverse phenomena cause loss of fuel oil, decrease in thermal efficiency, and environmental problems due to incomplete combustion.

In particular, in the early stages of ignition when the ambient temperature is low, and in the case of heavy fuel oil, etc., it is inevitable that the above-mentioned defective phenomenon becomes noticeable.

The present invention provides a novel combustion method and apparatus that prevents mitigation of common points in the combustion of one or more fuel oils.

``Means for Solving the Problems'' The present invention solves the above technical problems. ``When fuel oil is burned in a burner, a rod-shaped charged object with an electrically closed end is installed in the fuel oil supply pipe in the burner section. is attached in the direction of flow of fuel oil, the charged body is made to have a microcurrent charge state by applying a high alternating current voltage, and the flowing fuel oil is electrically processed and combusted by the charged body. , “In burning fuel oil, the fuel oil contains
The electrically processed material is electrically treated in advance by a charged body whose tip is electrically closed at a high AC voltage and has a microcurrent charge state, and the electrically processed material is placed at a suitable distance from the outer edge of the combustion flame. The second invention is a combustion method in which vaporized fuel oil particles are sucked in and combusted as a strong diffusion flame.

``In a fuel oil combustion device using a wick, the tip of a charge body is made of a conductor with an insulating coating and a closed tip, and has a charge generating part at the rear end of which generates a high AC voltage and a small current.
Insert or attach to the wick.

Furthermore, a combustion apparatus using the combustion method of the second invention includes a grounding body provided at a distance from the outer edge of the combustion frame!
J's third invention, [The tip of the charge body is made of a conductor whose tip is closed with an insulation coating, and has a charge generating part that generates a minute current with an AC high voltage at the rear end, and is connected to fuel oil in front of a burner. 4. A combustion apparatus which uses the combustion method of the second invention, wherein the combustion apparatus is installed in the flow path, and is further provided with a grounding body at an appropriate distance from the outer edge of the combustion frame.

Hereinafter, one or more inventions will be described in detail based on conceptual diagrams.

First, with reference to FIG. 1(A) of the conceptual diagram of the first invention, a fuel oil supply pipe 12 inside the burner provided at the center of the burner 8 is connected to the center of the fuel oil supply pipe 12 along the flow direction of fuel oil. A rod-shaped charge body 1 is installed, and the charge body 1 is insulated and removably fixed to the rear end of the burner 8, forming a cantilevered rod whose front end is electrically closed and forms a free end. A charge generating section 2 connected to the rear end of the charge body 1 by a conductive wire 13 is provided to generate charges under arbitrary conditions such as 60 hertz, 3,000 to 6,000 volts, and 0.5 milliampere. The flowing fuel oil is electrically processed by the charge body 1 which is charged with alternating current high voltage and minute current, and immediately sprayed from the burner nozzle 14 and burned. The charge body 1 is made by covering a single core wire 10 (diameter: approximately 0.8 mm) with an insulating material 11, or by covering a core wire 10 made by bundling a group of thin wires, as shown in FIGS. 4(A) and 4(B). #@It is formed by covering the edge material 11. Further, the first invention is intended to electrically process fuel oil by the charge body 1 and immediately combust it in a burner, and it is most preferable to incorporate the fuel oil into the burner 8 as shown in FIG. 1(A). However, the first
As in the low-pressure burner 8 shown in FIG.
It may be built into.

Next, referring to FIG. 2 of the conceptual diagram of the second and third inventions, fuel oil (kerosene) placed in the container 4 is sucked up into the string-like wick 5, and the upper end of the wick 5 is ignited. In the natural ventilation combustion (natural combustion using environmental air without forced air supply for combustion), the first invention includes a covered conductor wire in the central part from the oil submerged part of the wick 5 to the vicinity of the tip, and the tip is closed. A similar charge body 1 is inserted, and the rear end of the charge body 1 is connected to a charge generation section 2 that generates a high AC voltage and a small current, which is the same as in the first invention.

On the other hand, on the outer periphery of the upper end of the container 4, there is a plate-shaped grounding body 3 that surrounds the combustion flame 6 formed by the wick 5 at an arbitrary distance.
(The illustrated grounding body 3 is in the shape of an annular plate) is provided and grounded, and constitutes a wick type combustion device for the fuel oil.

Then, for example, 60 Hz, 3,000 to 6
,000 volts, Q, 5 milliamperes, etc., and the unburned fuel oil that is sucked up into the wick 5 and ascends through the wick 5 is electrically processed by the charged body 1 in a charged state. Then, the vaporized particles of fuel oil generated from the upper end of the wick are electrically attracted to the earth body 3 and burned as a strong diffusion flame 6.

Next, with reference to FIG. 3 of the conceptual diagram of the fourth invention, in the combustion apparatus in which fuel oil pressure-fed from the oil pipe 7 is forcedly combusted by the burner 8, the oil pipe 7 in front of the burner has the above-mentioned A charge body 1 identical to that shown in FIG. Then, the fuel oil before combustion is electrically processed by the charge body 1 while flowing through the oil pipe 7, and the fuel oil particles sprayed and vaporized by the burner 8 are electrically attracted to the ground body 3 to form a strong diffusion frame 6. It is designed to be burned as

Note that the means for mounting the charge body 1 in the third and fourth inventions has the following exemplified variations in addition to those shown in FIG. 2.3. That is, in order to attach the charge body 1 to the lamp wick 5, as shown in FIG. In some cases, a charge body 1 forming a notched ring is inserted into a layer, or a charge body 1 wound in a coil is attached to the outer or inner periphery of a wick 5' which is also an endless ring. In addition, in the case of the burner combustion method, as shown in FIG. 6, the charge body 1 whose tip is closed by winding a coil is wound around the outer periphery of the oil feed pipe 7 or is attached internally to the oil feed pipe 7. Although not shown in the drawings, in order to further improve electrical insulation in the internal installation shown in FIG. 6(B), the coil-wound charge body 1 is housed in a casing tube.

The jacketed pipe may be installed inside the oil pipe 7.

On the other hand, the grounding body 3 may be changed to not only the annular shape shown in Figure 2.3 but also a notched annular shape or a screen shape facing the combustion frame 6 as the center.

Furthermore, the first, second, and fourth inventions have the following embodiments. That is, when a combustion device such as a boiler has a high voltage generation section consisting of an ignition coil or the like for igniting the burner, the high voltage for ignition is used to generate the charge body 1 instead of the charge generation section 2 described above. The above charge is applied, and the high voltage generating section is connected to a power source for burner ignition and a charge body 1.
It may also be used as a power source.

"Operation" According to the combustion method and combustion apparatus of the present invention described above, the fuel oil before combustion undergoes electrical processing such as ionization by a charge body to activate electrically neutral oil molecules. It is assumed that the mutual friction caused by this activation actively promotes the miniaturization of oil molecules, and the fuel oil that has undergone this electrical treatment has improved physical properties that are more suitable for combustion, and based on the improved physical properties. This has the effect of bringing about a much better combustion state.

Further, in the first invention, since the above physical properties are improved at the burner site and burned at the same time, the fuel oil is burned while the improved physical properties of the fuel oil are not dissipated and deteriorated, so that the above-mentioned effects can be effectively enjoyed. can do.

In the boiler using the above combustion method of the first invention,
The results of a comparative experiment in which the charged body 1 was placed in two states, charged and uncharged, are as shown by the first and second researchers below.

The numerical values showing the boiler performance shown in Table 1 and above show that there is a clear significant difference between the charged body loaded state and the charged body unloaded state (combustion method of conventional means). The existence of a unique effect is clear.

On the other hand, in the second to fourth inventions, the combustible particles vaporized by the action of the charged body are strongly electrically attracted to the earth body 3 surrounding the combustion flame 6 due to the electric charge caused by ionization, etc., and diffused outward. become extremely active. Then, the combustible particles come into close contact with the air, resulting in odor, and the combustion rate and efficiency are high, producing an extremely good combustion flame and combustion. Also in the natural ventilation combustion shown in the second diagram, the outer flame of the combustion flame 6 forms a tulip shape and actively diffuses from the beginning of combustion in a flame-retardant environment, forming a strong diffusion flame, resulting in complete combustion or near-complete combustion. Very good combustion can be obtained.

"Example" An example of a burner used in the combustion method of the first invention will be described with reference to FIG. FIG. 7(A) shows a steam spray burner 8, and FIG. 7(B) shows a rotary burner 8. Figure 7 (C
) shows a pressure spray burner 8 (double type) of a small once-through boiler 16, a charge body 1 is attached to a fuel oil supply pipe 12 installed inside each burner 8, and a conductor 13 is connected to the rear end of the charge body 1. It is connected to a charge generation section 2 (not shown) via the charge generating section 2 (not shown). In the burner 8 of each of these Examples, the fuel oil just before combustion was treated by the charge body 1, and the above-mentioned combustion effect was present.

"Effects of the Invention" As explained above, the fuel oil combustion method of the present invention and the combustion device using the same can further improve the combustion performance of fuel oil, so that it can be used in ignition environments where incomplete combustion is likely to occur or in the early stages of ignition. Even in flame-retardant fuel oil or natural aeration combustion, it burns in a strong diffusion flame with good combustion conditions, so compared to conventional methods, the combustion condition of fuel oil is greatly improved, making it an industrial option. It has significantly contributed to improving the combustion performance of industrial furnaces, heating equipment, and household heating equipment, and has improved the combustion efficiency and thermal efficiency of fuel oil, eliminating wasted fuel oil, and improving the operability of ignition and combustion. It has an extremely useful effect of greatly promoting improvement, as well as prevention of environmental failure by eliminating incomplete combustion.

Furthermore, the present invention can be widely applied without being limited to the type and shape of fuel oil or the combustion method of wick type burner type, and is excellent in practical use because it can be easily achieved at low cost by using only a simple charge body and a ground body. It has the advantage of having gender.

[Brief explanation of drawings]

Figures 1 (A) and (B): Conceptual front view of a burner using the combustion method of the first invention, Figure 2: Conceptual diagram showing the combustion device of the third invention, Figure 3: The combustion device of the fourth invention. Conceptual diagrams shown in Fig. 4 (A) and (B): Cross-sectional views of the charge body of the present invention, Fig. 5 (
A) (B) (C): A perspective view showing the charge body mounting means in the third invention, FIG. 6 (A) (B): A front view showing the charge body mounting means 6 in the fourth invention, FIG. Figure (A) (13)
(C): Symbols on the front view of the burner of the embodiment used in the combustion method of the first invention, 1: charge body, 2: charge generation part; 3: earth body, 4: container, 5.5': Wick, 6: Burning flame,
7: Oil feed pipe, 8: Burner, 9 Primary wiring, 10: Core wire, 11: Insulating material, 12: Fuel oil supply pipe, 13: Conductor

Claims (5)

[Claims] (1) When burning fuel oil in a burner, a rod-shaped charged body with an electrically closed end is installed in the fuel oil supply pipe in the burner area in the direction of flow of the fuel oil, and the charged body is applied to a high AC voltage. A method for burning fuel oil, which comprises bringing the fluid fuel oil into a microcurrent charge state and electrically processing and burning the fluid fuel oil using the charged body. (2) When burning fuel oil, the fuel oil is electrically processed using a charge body whose tip is electrically closed with a microcurrent charge state at high AC voltage, and the fuel oil is heated at an appropriate distance from the outer edge of the combustion flame. A method of burning fuel oil, which comprises sucking the vaporized particles of the electrically treated fuel oil into a grounding body provided at a distance, and burning them as a strong diffusion flame. (3) In a fuel oil combustion device using a wick, the tip of a charge body is made of a conductor with an insulating coating and a closed tip, and has a charge generating part at the rear end of which generates a high AC voltage and generates a minute current. , a fuel oil combustion device used in the combustion method according to claim (2), which is attached to the wick and further includes a grounding body provided at an appropriate distance from the outer edge of the combustion frame. . (4) In a fuel oil combustion device using a burner, the tip of a charge body is made of a conductive wire with an insulating coating and a closed tip, and has a charge generating part at the rear end of which generates a high AC voltage and generates a minute current. , installed in the fuel oil flow path in front of the burner, and further,
A combustion device used in the combustion method according to claim (2), which has a structure in which a grounding body is provided at a distance from the outer edge of the combustion flame. (5) A high voltage generator for burner ignition is connected to a charge body, and the charge body is made into an AC high voltage and is charged with a minute current. How to burn fuel oil.