JPH06102790B2 - Bamboo charcoal for fuel - Google Patents

Description

TECHNICAL FIELD The present invention relates to a bamboo charcoal for fuel, which can be used as a fuel for a bamboo charcoal having a thin wall thickness and a large hollow portion.

(Prior Art) Generally, in a method of producing charcoal, wood cut into a predetermined length is packed in a charcoal baking pot, and a burning material is burned to heat the inside of the pot. When spontaneous carbonization begins, carbonization proceeds without supplying fuel, and carbonization is completed in about 2 days. Finally, the amount of air supplied is increased to rapidly raise the temperature to about 1000 ° C to make it red hot. , It is cooled and taken out of the kettle to produce charcoal.

This charcoal is made of solid round wood,
The shrinkage rate when using charcoal is about 30% at most.

However, when bamboo is used as the carbonaceous material, the wall thickness is thin and there is a large hollow part inside. Therefore, when the temperature is continuously raised to produce conventional charcoal, the shrinkage rate of bamboo is 30-50%.
There is a problem that it will crack or twist as it reaches.

Therefore, the present inventor first developed a method for producing bamboo charcoal that prevents cracking and twisting (Japanese Patent Application No. 1-88442). As a result, it has become possible to process crafts such as vase and delicacies using bamboo charcoal.

However, since bamboo charcoal has a thin wall and a large hollow part inside, it does not burn well, and even if it is heated by a burner and ignited, it disappears for a while when the burner is stopped, and it self-combusts like block charcoal. There was a problem that I could not do.

As a result of investigating the cause of this problem, even if one end of cylindrical bamboo charcoal is ignited by a gas burner, the volume of the high temperature combustion part is small due to the thin wall thickness, and the area where the inside and outside surfaces contact the outside air due to the large hollow part It is considered that this is because the required combustion temperature cannot be maintained because the cooling rate is wide and the cooling rate is high.

In addition, bamboo grows abundantly in Japan and has a large fertility. Especially, Moso bamboo and the like grow up to several tens of meters in a year, so the bamboo bush spreads, and there was a problem in dealing with it.

In addition, the amount of bamboo used in bamboo work etc. is extremely small and has almost no utility value, so the bamboo bush is left unattended, and because it has a large reproductive power, it cannot be thinned sufficiently and it cannot grow densely and thickly. There was also the problem of rubbing against each other and causing scratches.

(Problems to be Solved by the Invention) As a result of various studies in view of such points, the present invention produces bamboo charcoal using bamboo that has not been conventionally used as a resource, and combines it with bamboo charcoal. This is a bamboo charcoal for fuel that can be used for fuel by utilizing its characteristics.

(Means for Solving the Problems) The present invention provides a fuel-use bamboo charcoal in which a plurality of bamboo charcoals having a small outer diameter are inserted into the hollow portion of a bamboo charcoal having a large outer diameter opened in the vertical direction. This is the first point.

Further, the present invention is characterized in that a plurality of bamboo charcoals having a small outer diameter are inserted into a hollow portion of a bamboo charcoal having a large outer diameter opened in the vertical direction and housed in a case-shaped wire net. Is the second gist.

(Operation) Next, the operation of the present invention will be described.

When the end of the bamboo charcoal for fuel is ignited, it burns and becomes red hot.

The outer bamboo charcoal has a large outer diameter, and the bamboo charcoal inserted in the hollow portion has a small outer diameter and a thin wall thickness, so it is easier to burn than the outer bamboo charcoal. Moreover, since the inner bamboo charcoal is in a high temperature atmosphere by receiving the heat of combustion from the adjacent bamboo charcoal, the combustion proceeds while being maintained at the required combustion temperature.

The outer surface of the outer bamboo charcoal, which has a large outer diameter, is in contact with the outside air, but the hollow inner surface of the charcoal is heated by the small outer diameter bamboo charcoal, which is heated to the required combustion temperature and strong toward the top. It burns with heat.

Further, the outer bamboo charcoal has a cylindrical shape, and the bamboo charcoal inserted inside this also has a cylindrical shape, so that a plurality of chimneys are formed inside. Therefore, the combustion heat rises to promote the chimney effect, the combustion section progresses upward, and the combustion flame is also surrounded by bamboo charcoal on the outside, so it can be used even in windy outdoors.

Further, by selecting the material, outer diameter, and number of bamboo charcoal and adjusting the air passage area, the combustion temperature and the combustion time can be set arbitrarily.

Further, ignition of a bamboo charcoal for fuel which is coated or impregnated with an igniting agent on the end is easier.

In addition, since bamboo charcoal is made of fibrous material in the vertical direction, the burned ash becomes continuous cotton in the vertical direction and is hard to collapse, and the one stored in the wire mesh is easy to clean up because the ash does not drop. You can enjoy charcoal grill at the table.

(Example) Next, the Example of this invention is described.

First, when producing bamboo charcoal, raw bamboo is cut along a node into a predetermined length and packed in a charcoal baking pot in a cylindrical shape. At this time, the wood and branches are used as a filling material before and after the raw bamboo placed in the charcoal stove.

In this state, the chimney is closed, the fuel material is put in from the firing port, and the ignition is performed to heat the inside of the charcoal baking pot. When the temperature is above 100 ℃ and below the spontaneous carbonization temperature of bamboo, open the chimney and heat it for 30 to 80 hours to slowly remove water from the raw bamboo and tighten the raw bamboo to prevent burning cracks.

In this way, after removing the water content of the raw bamboo, a combustion material is added and burned, and the combustion material is heated to a temperature above the spontaneous carbonization temperature, and when the spontaneous carbonization starts, the combustion material is not added.

Spontaneous carbonization of bamboo takes about 20 to 60 hours, and carbonization proceeds from the upper part to the lower part.

When carbonization of bamboo is completed, the amount of air supplied is increased to rapidly burn the bamboo and raise it to about 1000 ° C to make it red hot.
If you keep this red heat for about 10 to 30 hours, the hardness of bamboo will increase.

After that, the air vent and the chimney are closed to shut off the air to extinguish the air naturally, and when it cools, it is taken out of the charcoal baking pot to obtain cylindrical bamboo charcoal without cracks or deformation.

The bamboo charcoal manufactured in this way is cut into 4 to 10 cm high as shown in FIG. 1 to make a bamboo charcoal 1A having a large outer diameter, and a hollow charcoal 1B having a small outer diameter is placed inside the hollow portion 2. Assemble by inserting several ...

For example, as shown in FIG. 2, four bamboo charcoal for fuel 1 configured as described above is stored in a case-shaped wire net 3 and shipped as one set.

When it is used, it is placed on a gas stove (not shown) and heated by a gas flame for 1 to 2 minutes, so that the lower end of the bamboo charcoal 1 for fuel burns and becomes a red hot state.

When ignited in this way, for example, the stove 4 shown in FIG.
Move to. In this stove 4, a hemispherical combustion chamber 5 is formed inside the upper part, and air holes 6 ... Are opened laterally in the lower part of the combustion chamber 5.

In the state where it is transferred to the combustion chamber 5 of the stove 4, the combustion part 7 ignited at the lower end burns upward while self-combusting and continues to burn at a high temperature for about 30 to 90 minutes. You can have yakitori and barbecue.

This combustion process will be explained in more detail. As shown in Fig. 4, when the lower end of the fuel bamboo charcoal 1 is ignited, the outer diameter of bamboo charcoal 1B is smaller than that of bamboo charcoal 1A. easy. Further, since the inner bamboo charcoal 1B is in a high temperature atmosphere by receiving the combustion heat from the adjacent bamboo charcoal 1B and the inner surface of the bamboo charcoal 1A having a large outer diameter, the combustion proceeds while being maintained at the required combustion temperature.

The outer surface of bamboo charcoal 1A with a large outer diameter is in contact with the outside air,
Since the inner surface of the hollow portion 2 side is mutually heated by the burning bamboo charcoal 1B, it is heated to the required combustion temperature and burns upward.

Furthermore, the bamboo charcoal 1A with a larger outer diameter has a cylindrical shape, and the bamboo charcoal 1B inserted inside of this also has a cylindrical shape, so multiple chimneys are formed inside and the combustion heat rises to promote the chimney effect. The combustion section 7 advances upward.

In this case, the space between bamboo charcoal 1A and adjacent bamboo charcoal 1B is at least 30.
When they are separated by mm, the effect of mutual heating becomes small and combustion becomes difficult to proceed. This is the same reason that combustion does not proceed with one bamboo charcoal 1A.

As the combustion section 7 progresses upward, the inner bamboo charcoal 1B ... burns slightly ahead of the outer bamboo charcoal 1A as shown in FIG. 5, and the lower side becomes ash 8 and sinks. For this reason, the combustion flame 9 is also surrounded by the bamboo charcoal 1A on the outside, so that it can be used even in a windy outdoor place.

As the combustion progresses further and the inner bamboo charcoal 1B ... is completely combusted as shown in FIG. 6, the outer bamboo charcoal 1A is slightly left, and from this state, the outer bamboo charcoal 1A is sufficiently heated. As a result, the fuel bamboo charcoal 1 completely burns into ash 8.

In this case, if the number of bamboo charcoal 1B ... Is small and the air passage area of the hollow portion 2 is too large, the chimney effect is promoted, the bamboo charcoal 1B ... Completes combustion quickly at high temperature, and the outer bamboo charcoal 1A is completely combusted. It may be left without it. Also thin bamboo charcoal 1B ...
If too many are inserted to reduce the air passage area too much, the chimney effect will be reduced and combustion will be slow and the fire power will be weak.

Therefore, the combustion temperature and the combustion time can be arbitrarily adjusted by adjusting the material, the outer diameter, and the number of the bamboo charcoal 1A and 1B to select the air passage area.

Bamboo charcoal 1A and 1B are not cracked during burning and have no odor, so they are suitable for grilling food such as yakitori or barbecue while surrounding the table. Moreover, fuel charcoal 1 is excellent in design and charcoal grilled. You can enjoy the unique warm atmosphere on the table at home, inn, or restaurant.

Further, since the bamboo charcoal 1A, 1B is formed of a fiber in the vertical direction, the burned ash 8 becomes a continuous cotton shape in the vertical direction and does not easily collapse, so that the ash 8 does not drop from the wire net 3 and is easy to clean up. .

On the other hand, in the conventional charcoal grilling using charcoal, it is troublesome to ignite the charcoal, and it is not possible to obtain the firepower without burning a certain amount, and since the burning time cannot be adjusted, the fire is extinguished and the residual fine ash is also cleaned up. It is troublesome. On the other hand, the fuel bamboo charcoal 1 of the present invention has a small amount and can be cooked on the small stove 4 placed on the table. The generated gas is small and the burning time can be calculated. .

Further, in the above embodiment, the case of igniting with a gas stove is shown, but the bamboo charcoal for fuel 1 may have a structure in which an igniting agent such as thermite is applied or impregnated at its end.

FIG. 7 shows another embodiment of the present invention. A mat in which a plurality of fuel bamboo charcoal for fuel 1 ...
10 is glued.

This is a bamboo charcoal for each fuel as it is glued to the mat 10.
... does not fall apart and is packed in the box in the opposite direction when packing, and when used, it is put upside down in the wire net 3 and the upper mat 9 is ignited.

When ignited from above, the fuel bamboo charcoal 1 burns from above to below and becomes ash 8 from above, so it does not sink and remains as a cylindrical ash 8 until the end. .

Further, the fuel bamboo charcoal 1 may have a structure in which an igniting agent such as thermite is applied or impregnated at the end thereof.

(Effects of the Invention) As described above, according to the fuel bamboo charcoal according to the present invention, the characteristics of the bamboo are utilized to facilitate the combustion, the design is excellent, the odor does not repel during burning, and the amount is small. With it, you can obtain a strong firepower and calculate the burning time. Moreover, you can easily ignite and dispose of ash, and you can enjoy charcoal grilling indoors by placing it on the table.

Furthermore, since bamboo with strong fertility, which has not been used as a resource, can be used as a fuel, bamboo bushes nationwide can be effectively used as a valuable energy source.

[Brief description of drawings]

FIG. 1 is a perspective view of a fuel bamboo charcoal according to an embodiment of the present invention, FIG. 2 is a perspective view of a fuel bamboo charcoal placed in a wire mesh, and FIG. 3 is a sectional view showing a state in which the fuel bamboo charcoal is transferred to a stove. 4 to 6 are sectional views sequentially showing combustion states of bamboo charcoal for fuel, FIG.
The figure is a front view of a bamboo charcoal for fuel to which a mat impregnated with an ignition agent according to another embodiment is adhered. 1 ... Bamboo charcoal for fuel, 1A, 1B ... Bamboo charcoal 2 ... Hollow part, 3 ... Wire mesh, 4 ... Stove, 5 ... Combustion chamber, 6 ... Air hole, 7 ... Combustion part, 8 ... Ash, 9 ...... Combustion flame 10 ...... Matt

Claims (2)

[Claims] 1. A bamboo charcoal for fuel, characterized in that a plurality of bamboo charcoals having a small outer diameter are inserted into a hollow portion of a bamboo charcoal having a large outer shape opened in the vertical direction. 2. A fuel comprising a plurality of bamboo charcoal having a small outer diameter inserted into a hollow portion of a bamboo charcoal having a large outer diameter opened in the vertical direction and housed in a case-like wire mesh. Bamboo Charcoal.