JPS6341730A - Ignitor of solid fuel combustion device - Google Patents

Abstract

PURPOSE:To make ignition to solid fuel possible surely and quickly by a method wherein at a combustion part where solid fuel is accomodated and held to be burnt a ceramic heater is fixed and red-heated with electric current by the operation outside the combustion part and solid fuel in the combustion part is ignited. CONSTITUTION:An ignitor 12 is composed of a nearly wooden spoon or guitarshaped ceramic heater in plane view and fixed on the upper surface of a heat insulating and retaining layer 21 placed on the top surface of a wear plate 2. As the electrode parts 13, 13 of the heater are located at the outside of a combustion chamber 4 surrounded and formed by a cylindrical body 3, the electrode parts are prevented from being exposed directly to a high temp. atmosphere formed at the combustion time of solid fuel such as oil coke etc. Ignition is able to be carried out by only an power supplying operation from the outside of a device and an ignition operation is simple and the solid fuel is able to be surely ignited with no fear of combustion failure.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an ignition device for a combustion device that easily and efficiently ignites solid fuel.

Conventional technology> In recent years, II! There are a variety of fuels used for various purposes such as coal, solid fuel for boiling water, oil, and natural gas, each of which has its own advantages and disadvantages. In particular, the use of petroleum is young, but the future supply amount and import costs are not necessarily stable, and storage is dangerous.

Therefore, among these fuels, we have focused on solid fuels, which are easy to handle during transportation, storage, etc., ignite quickly, and have little risk of fire or explosion, and charcoal, briquettes, coal, etc. are generally widely used. Ta.

However, when such solid fuel is to be burned, a rostrum made of a plurality of ventilation slits formed at a predetermined position in the center of a flat plate is provided in the combustion chamber, and the solid fuel is poured onto the rostrum at a predetermined height. In this state, the solid fuel is appropriately ignited by an ignition means, and thereafter the solid fuel is intermittently combusted.

(Jitko No. 39-36175, Jitko No. 40-23003
The above solid fuels such as coal are
For the purpose of transportation, heat retention and long life are required, and if the ash content is less than 10%, it will fall off the shelf and fall between the rosdol, so it has a natural content of more than 10%, and even when burned, -1 "Watsuru" does not fall off, retains its shape and remains as ash, and has a heat-insulating effect, so there is a large amount of ash left after combustion, which requires time and effort to dispose of, and it is difficult to select the raw materials and form it. The cost was also relatively high due to the necessity of

Therefore, if solid fuels with low ash content are used, not only can there be almost no risk of polluting the atmosphere, but there will also be little waste in the process of disposing of the ash remaining in the combustion equipment. The present inventor has developed a combustion device that can use low-ash solid fuel. (Unexamined Japanese Patent Publication No. 59-89905) Hitherto, lignite, petroleum coke, calcaina coke, charcoal, coal pitch coke, and their ponds have been known as low-ash solid fuels, and they are inexpensive and high in calories. is sprayed with water during the manufacturing process, so it dries and
If the dehydration is insufficient, the moisture contained in the fuel will turn into steam due to the heat of the fire during combustion, and it will explode without being completely released. A cylindrical body 3 is provided which is supported by the plate 2 and which is supported by the flat plate material and surrounds the solid fuel 1 to form the combustion chamber 4. Furthermore, a narrow width is provided between the lower end edge of the cylindrical body and the flat plate material. The invention in which the intake gap 36 is formed in proportion to the displacement is disclosed in the above-mentioned Japanese Unexamined Patent Application Publication No. 1983-1999 by the present inventor as shown in the Pt5A diagram.
This is the combustion yC position of No. 89905.

Therefore, the combustion temperature of the solid fuel rises to a high temperature, and even if cracks or explosions occur, the imaged fuel will not fall, and the receiver will be supported on the plate. Combustion is continued by an appropriate amount of 2 air naturally inhaled through the narrow intake gap, and the solid fuel is almost completely combusted. ? ■I was able to prevent unnecessary waste due to 'fee'.

However, in any of the above-mentioned known combustion devices with or without a loss dollar, there is no built-in ignition device for igniting solid fuel that is difficult to ignite. First, second
In the receiver shown in the figure, the ignition material 11 is put on the plate 2, and the ignition material 11
need to be lit.

Here, the igniting material 11 is made of two or three pieces stacked with their shoulders oriented in different directions, compressed paper, etc., formed into a rod shape, and made of gold with an oil content, which are rotatably connected to each other. A known ignition material was used.

Then, after confirming that the igniting material 11 is ignited, a predetermined amount of solid fuel 1 may be inputted from the solid fuel input port 6.
The solid fuel 1 is supported on a plate so as to cover the ignition material 11, and due to its block shape, it is stacked with gaps between stacks so as not to impede ventilation.

Thereafter, the heating temperature of the solid fuel 1 rises due to fF due to the combustion of the ignition material 11, volatile matter comes out from the solid due to thermal decomposition and burns in the air, and the atmospheric temperature of the combustion chamber 4 rises. After the temperature reaches a predetermined temperature, the metal obtains oxygen from the metal atmosphere, reaches the pre-flaming point, and begins to burn.

The solid fuel 1 begins to burn, and all the accumulated solids become red-hot and combust at a high temperature due to radiant heat, boiling off in the high-temperature combustion chamber 4, and remain as it is due to the radiant heat and heat retention effect of the cylindrical body 3, and the intake effect from the surroundings through the intake gap 36. Burn 1! Continue.

In addition, as the solid fuel 1 burns, combustion exhaust gas is discharged through the combustion stack 7, and the atmosphere is sucked into the intake gap 36.
is drawn into the combustion chamber 4 through the In addition, in the figure, 5 is g4 part, 6 is a fuel inlet, 8 is a lid, 9 is a hole for supplying the atmosphere to the body 5, 10 is a ring for adjusting the hole 9, 21.31 is a heat insulation layer, 22 23 is a leg, 23 is a shutter, 32 is a leg of a cylinder, 33 is a pin, 34 is a cylinder, and 35 is a tapered groove.

As the combustion continues, the amount of the low ash solid fuel 1 gradually decreases, and when it approaches the limit amount that allows continued combustion, the low ash solid fuel inlet 6 is opened to add additional low ash solid fuel 1. This allows the combustion to continue for an additional m time.

<Z point to be solved by the invention> Starter 11, which is the ignition means in the above-mentioned conventional combustion device
It takes a lot of effort to ignite the paper, and the ignition material 11 and firewood are difficult to ignite, and the tR1
No. 11 paper requires a large amount of time to ignite the solid fuel, and is not a simple and reliable means of ignition.The present invention was developed to eliminate the above-mentioned drawbacks.

The ignition means of the present invention is characterized in that the ignition means is attached to the combustion chamber of the combustion chamber, and the ignition means can be activated by operating the ignition means outside the combustion chamber. It becomes red hot and ignites the solid fuel in the combustion chamber.

<Example> The ignition device for the solid fuel @ incineration device of the present invention will be explained by the implementing country.

The most important feature of the ignition device of the present invention shown in FIGS. 1 and 2 is the use of a ceramic heater that is resistant to high temperatures.

Ignition shown in Figure 1! The plate 12 is composed of a ceramic heater that has a roughly gourd-like shape when viewed from above, and a receiver is provided on the upper surface of the heat insulating layer 21 on the uppermost surface of the plate 2 .

By positioning the electrode portion 13.13 of the ceramic heater outside the combustion chamber 4 surrounded and formed by the cylindrical body 3,
This prevents direct exposure to the high temperature atmosphere during combustion of solid fuels such as petroleum coke. Figure 2 shows a large number of ceramic heaters 12 in the form of plates, squares, round rods, tubes, etc., attached to the inner surface of a heat insulating layer, and the electrode portions 13 and 13 of each ceramic heater being protected in the same manner as described above, and placed outside the combustion chamber. i11 I will make it work.

FIG. 3 shows a 13° lead wire in FIG.

It should be noted that the configuration of other parts is the same as that of the combustion apparatus shown in FIG. 4, so a description thereof will be omitted. In addition, the shape of the ceramic heater 12,
The size etc. are not limited to those shown.

: In the case of the embodiment shown in FIG. 52, there is no problem even if the heat insulating layer 31 is an inner vertical wall. According to the ignition device of the present invention, solid fuel is not charged and deposited after confirming ignition, but is carried out in advance. Even if the fuel is charged and deposited, the fuel at the lower end is ignited by the ceramic heater. After that, the solid fuel can be combusted in the same way as before, and when igniting the low ash solid fuel, it is only necessary to energize the ceramic heater.
The process can be further simplified.

Incidentally, the combustion apparatus using solid fuel is not limited to the one shown in FIG.
By using the ceramic heater 12 as shown in Fig. 4 (b) in the combustion device shown in Fig. 4 (a), even if the ignition device is a high-calorie fuel, the risk of burnout is reduced due to the upward heat dissipation of the ignition device. indicates a protective body.

<Effects of the Invention> The ignition device of the present invention has the above-mentioned structure and operation, and a ceramic heater with excellent heat resistance is installed in the main body of various combustion devices, and ignition can be performed only by repeatedly applying electricity from outside the device. Unlike traditional ignition materials, the ignition cloth is easier to use, and unlike ignition materials, there is no risk of extinguishing (it is now possible to reliably ignite solid fuel. Since the device is set up as a combustion device, there is no need to install it inside like a igniter, and there is no need for space or effort to prepare expensive ignition materials.In addition, unlike ignition materials, it does not turn into ash. .

It is now possible to reliably and quickly ignite solid fuel, which is difficult to ignite, using a ceramic heater that glows at high temperatures.

[Brief explanation of the drawing]

The drawings show an embodiment of the ignition device of the present invention, and FIG.
A simplified plan view of the main parts of the ignition device of the present invention showing the state of use of the ignition device having a planar configuration. Fig. 52 is an enlarged sectional view of another embodiment of the same as above, Fig. 3 is a simplified longitudinal sectional view of the main part showing the usage state of the ignition device of Fig. 1, and Fig. 4(a) is another embodiment. FIG. 4(b) is a perspective view showing another embodiment of the ceramic heater, and FIG. 5 is a usage state showing an example of the ceramic heater. a is a vertical cross-sectional view.

Claims (1)

[Claims] 1. A ceramic heater is installed in a combustion section where solid fuel is housed and held and burned, and is operated outside the combustion section to generate red heat when energized to ignite and burn the solid fuel inside the combustion section. An ignition device for a solid fuel combustion device characterized by: 2. An ignition device for a solid fuel combustion apparatus according to claim 1, wherein the ceramic heater is a flat body and is horizontally set at the lower end of the combustion section. 3. The ignition device for a solid fuel combustion apparatus according to claim 1, characterized in that a plurality of ceramic heaters are formed into rods, tubes, etc. and are set on the inner circumferential wall of the combustion section.