JPS58168805A - Vaporizing type oil burner - Google Patents

Abstract

PURPOSE:To inhibit the formation of tar and to maintain instantant ignition and extinction property in an oil burner, by bearing an oxidizing catalyst such as platinum or palladium on a vaporizing wall in high temperature. CONSTITUTION:The feed oil, being fed from a fuel feed tube 2, is atomized by an air flow which is injected from an air feed port 1, is instantly vaporized on a preheated vaporizing wall 6, and is mixed with the combustion air. The premixed gas, after being mixed further with the air during passing through a throttled port 7 and the distribution of velocity is uniformed by a straightening plate 8, is ignited by discharge by ignitors 16 and 17 to form stable flames 10 on a burner port plate 9. In case that oil of high boiling point such as deteriorated kerosene or impure kerosene is mixed with the fuel, formation of tar is inhibited by the oxidizing action of a catalyst 19, if the temperature of a vaporizing wall 6 is higher thab about 250 deg.C. With such an arrangement, safe and comfortable burner with instant ignition and extinction can be obtained.

Description

[Detailed description of the invention] This invention is applicable to vaporized gas of liquid fuel such as kerosene.

The present invention relates to a premix combustion device that premixes air.

Conventionally, atomized liquid fuel such as kerosene is vaporized on a high-temperature wall, and the vapor created by evaporating and cooling in a high-temperature vaporization tube is premixed with combustion air.

A vaporizing combustion machine that burns blue flame has been developed.

This woodcutter's burner has a Bunsen flame similar to gas fuel. It has the characteristics of expelling soot and containing little harmful components such as R monoxide (Ga4).

It has come to be widely used in space heaters, water heaters, etc.

However, if defective kerosene that has suffered oxidative deterioration during long-term storage or impure kerosene containing high boiling point components such as ] is deposited, causing a delay in vaporization and causing problems such as unburned kerosene being discharged during ignition and ignition.Furthermore, if tar formation is significant, ignition cannot be performed], heat exchanger There is also the possibility that the kerosene vapor trapped inside could ignite and cause an explosion.

This invention was made in order to eliminate the negative effects caused by the above-mentioned tar-based composition, and by supporting an oxidation catalyst such as platinum or palladium on the high-temperature vaporization wall, tar production can be suppressed, and in the event of defects or impurities, tar production can be suppressed. Even when using kerosene, instant ignition,
The purpose is to provide a highly safe and convenient industrial waste equipment 1 that can maintain fire extinguishing.

An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, (1) is a combustion air supply hole, and (2) is a kerosene supply pipe, the tip of which is needle-shaped. (3)
C9 is a pressurizing pipe that applies the static pressure generated in the air supply hole to the constant oil level device (4) (61 is a vaporization wall surrounding the vaporization chamber (5) made of a material with good thermal conductivity such as aluminum) A strangulation hole +7) on the top! It has a base plate (8) and a flame hole plate (9). uD is an ion electrode for detecting the flame [11], and the detection circuit performs the combustion t18 injection. The material is a ceramic heater, and the material is made of alumina, etc., and is an electrically insulating board. Also, u61. αη is the pole of the discharge for lighting the flame.

[181] is the ogive of the fuel flow installation layer, and U- is a catalyst layer of platinum, palladium, etc. coated on the inner surface of the vaporization wall (6).

Next, the operation will be explained. Ceramic heater-a in advance
2, the vaporization wall (6) is heated to a predetermined temperature, and combustion air is supplied into the vaporization chamber (5) from the supply hole (1) to the blower a (not shown). The static pressure in the supply hole (1) is pressurized to the constant oil level (4) through the pressurizing pipe (3), and the amount of fuel corresponding to the static pressure and the diameter of the hole (18) is increased. The fuel supply is supplied by an avalanche.The supplied kerosene is atomized by the air flow ejected from the air supply hole, and then passed through the preheated vaporization wall (
6) Instantly vaporizes at the top and mixes with combustion air. While the premixture passes through the throttle hole (7), it is further mixed and passed through the rectifier plate (8).
After making the flow velocity distribution uniform, the igniter is ignited by discharge on the flame hole plate (9) and a stable flame
Yt is formed. After ignition, the vaporized Jl F63 recovers heat from the flame.

No human power is required for the heater. In addition, from the ion electrode ■,
Observe the regular It branch shape of ion *a, constantly monitor the flame,
If the flame goes out, safely stop the combustion using the auxiliary Il. Furthermore, by changing the air blow a voltage, etc.
- If adjusted, the static pressure inside the air supply hole will become plexifa@
The supply t is autonomously made one node. Finally, #1 formation is shown in Figure 1.

The combustion machine is easy to operate, and the L/L input can be adjusted at a low speed, so that a predetermined air-fuel ratio is always maintained and stable flame combustion is achieved.

Of course, tar formation will occur while using normal kerosene.
However, in the unlikely event that the above-mentioned defects or impure kerosene etc. are mixed in, the temperature Tw of the vaporization wall (6) will be 25.
If the temperature is 0°C or higher, the oxidation effect of the 1M medium [phase] is inhibited and tar formation is suppressed. Figure 2 compares the tar formation with and without a catalyst when diesel oil is used as a representative high-boiling point component.

In addition, it is effective to increase the temperature Twf of the vaporization wall (6) to suppress tar.If the temperature is set at 350℃sfI for the TV and Q, tar generation will be extremely small, and even the tar that has been generated will be able to be used again next time. The inventors have confirmed that there is no increase in the amount of tar because it burns on the catalyst.

In addition, in the above example, we explained a method in which kerosene is atomized by the shearing force of air flow and instantaneously vaporized by a high-temperature vaporization wall. Can I use a high temperature wall light? The catalyst is similarly effective in suppressing tar in the case of a pot type in which lI+ is dripped, and in the case of a vaporizing tube type in which only kerosene is supplied to a vaporizing chamber surrounded by a high-temperature wall and heated and evaporated.

As mentioned above, this @Ming has an oxidation catalyst etc. supported on the Ii6 temperature vaporization wall, so tar generation on the vaporization wall is greatly suppressed, instantaneous contact and tn fire are always achieved, and comfortable and safe vaporization is achieved. This has the effect of providing a combustion device.

[Brief explanation of the drawing]

FIG. 1 is a side view of this Example #10, and FIG. 2 is a characteristic diagram showing the catalytic effect on tar formation when light oil is used. In the figure, (1) is the combustion air supply hole, (2) is the kerosene supply hole, (5) is the vaporization chamber, (6) is the vaporization wall, αl is the flame, and (19 is the catalyst layer. Person Shin Kuzuno (1 other person) 2nd prisoner θ 5DQ
1000 Burning Sairai Procedural Amendment (Spontaneous) 5°7122 Commissioner of the Japan Patent Office 1, Indication of Case Patent Application No. 57-51831 2,
Name of the invention: Vaporization combustion device 3, Relationship with the case of the person making the amendment Patent applicant Representative Hitoshi Katayama Department 4, Agent 11 Location 2, Sanno-chome, Maruno, Chiyoda-ku, Tokyo
No. 3, No. 5, Drawing subject to amendment 6 Contents of amendment tl+ Figure 1 of the drawing and attached sheet 9 are corrected. Attached Sodium Inventory TL + Drawing (Figure 1) 1 or more copies

Claims (1)

[Claims] Yama: A device for vaporizing and burning a liquid fuel such as kerosene, which is equipped with a supply device for liquid fuel such as kerosene, and a vaporizing wall for vaporizing and vaporizing the fuel, in which an oxidizing catalyst such as platinum, palladium, etc. is applied to the vaporizing wall. : A vaporization combustion device characterized by complete maintenance. Baking equipment.