JP3848342B2 - Solid fuel - Google Patents

Description

  The present invention relates to a small solid fuel used in a tabletop stove or the like, and more particularly to a solid fuel formed by adding a binder to a granular material made of a carbide of a plant such as charcoal and forming it into a predetermined shape.

Conventionally, as a small solid fuel used in a tabletop stove or the like, a solid fuel made from paraffin, alcohol, or the like has been often used.
By the way, in recent years, the use of charcoal as a charcoal of an existing plant has been reviewed, and the use of this charcoal in a tabletop stove has been studied. As a fuel using this kind of charcoal, for example, a solid fuel technique described in Japanese Patent Application Laid-Open No. 8-127785 is known (see Patent Document 1).

  This solid fuel is mixed with an inorganic binder within the range of 4 to 10 parts by weight with respect to 100 parts by weight of charcoal powder, for example, with addition of magnesium silicate, and then mixed by adding water and sufficiently viscous. Knead until is obtained. This is produced by, for example, forming it into a cylindrical shape having a diameter of 30 mm and a length of 100 mm with an extrusion molding machine and then drying at 100 ° C. for 12 hours. Since this solid fuel is formed from charcoal powder, it has the advantage that it produces very little harmful gases and unpleasant odors during combustion compared to the charcoal itself, and has the strength that does not easily collapse during combustion. is there.

JP-A-8-127785

  By the way, in a conventional solid fuel, for example, when used on a tabletop stove, this solid fuel is placed on a grate in a stove and burned, but since the shape is a simple lump, it is difficult to ignite, Moreover, since it is a mere lump of columnar shape, there is a problem that combustion is not uniform and it is difficult to set the combustion time. Furthermore, since this solid fuel is a simple lump of a cylindrical shape, it is difficult to place it on a grate in a stove, and it is difficult to stabilize even if it is placed, and there is a problem that handling is complicated.

  The present invention has been made in view of the above-mentioned problems. It is easy to place in a stove and stabilizes after placing, facilitating handling, facilitating ignition, and uniform combustion. An object of the present invention is to provide a solid fuel in which the combustion time can be easily set.

The technical means of the present invention for achieving such an object is to form a plate-like solid fuel obtained by adding a binder to a powdered body made of plant carbide and forming it into a predetermined shape. A plurality of holes penetrating therethrough are formed.
As the carbonized material of the plant, for example, charcoal, bamboo charcoal, coconut charcoal or the like may be used. As a method of making the powder particles, a lump of carbide may be pulverized, or a material previously powdered like sawdust may be carbonized.
As the binder, for example, an organic binder such as a cellulose derivative is used. This binder is relatively inexpensive and does not generate harmful substances when burned. Moreover, when mixing a granular material and a binder at the time of solid fuel manufacture, a granular material can be made uniform and the quality of a product can be made uniform and uniform.

Thereby, when using for a tabletop stove, for example, it mounts on the mounting base as a grate provided with an air hole. In this case, since the solid fuel is plate-shaped, it is easy to mount, and the handling becomes extremely easy as compared with the conventional rod-shaped one, and because it is plate-shaped, stabilization of mounting is improved.
Then, when the solid fuel is ignited in this state, the solid fuel is formed into a plate shape and a plurality of holes are formed, so that air flows through the holes of the solid fuel, so that the flame is on the back surface of the solid fuel. It spreads throughout the whole and in the holes of the solid fuel, and ignition is easily performed.
When the solid fuel is ignited, the solid fuel is formed into a plate shape and a plurality of holes are formed, so that air flows well through the holes of the solid fuel and the combustion is performed uniformly.
In addition, the degree of combustion of this solid fuel varies depending on the size of the solid fuel, especially the outer shape, thickness, diameter and number of holes, but the outer shape, thickness, diameter and number of holes can be easily set at the time of manufacture. The combustion time can be easily set, and the required combustion time can be secured.
In addition, since the granular material is made of a natural material plant and does not contain excessive chemical substances, it is a natural cycle fuel, has conveniences suitable for the present age, and is a reasonable and economical fuel.

And it is set as the structure which formed the said hole in matrix form as needed. Since the holes are formed in a matrix, the air flow is averaged and the combustion is performed more uniformly.
Further, if necessary, 10 to 2500 holes are provided per upper surface area SA of SA = 100 cm ^{2 and} the diameter D of the holes is 1 mm ≦ D ≦ 20 mm. By appropriately changing the hole area ratio, the heating power and the combustion time can be adjusted. In addition, due to the size and distribution of the holes, air flows well in the holes and the combustion is performed uniformly.

Further, the thickness t is set to 1 mm ≦ t ≦ 30 mm as necessary. Desirably, the thickness t is set to 5 mm ≦ t ≦ 25 mm. Thereby, a thermal power and combustion time can be adjusted by changing thickness suitably. Also, this thickness allows air to flow well through the holes, and combustion is performed uniformly. Handling becomes extremely easy.
Furthermore, if necessary, the density ρ is set to 0.4 g / cm ³ ≦ ρ ≦ 0.8 g / cm ³ . It is lightweight and easy to ignite, and the combustion is performed uniformly.

Further, in the present invention, the powder is composed of powder having a particle size D of D ≦ 4 mm, and the powder has a powder of 3 mm <D ≦ 4 mm with respect to the weight of the whole powder. It is set as the structure containing 30 weight%-40 weight% of a granule.
In this case, if necessary, as the above-mentioned granular material, 25% by weight to 35% by weight of the granular material of D ≦ 1 mm and 10% of the granular material of 1 mm <D ≦ 2 mm with respect to the weight of the whole granular material. % to 20 wt%, 2 mm <is a granular material of 15 wt% to 25 wt% including construction of D ≦ 3 mm.
Here, the particle size D refers to a particle size classified by a sieve in the particle size D range. In addition, the weight ratio of the powder particles of each particle size is determined within the above numerical range in consideration of the ratio so that the total weight becomes 100% by weight.

As a result, powder particles of different particle sizes are dispersed with each other, and small particle particles burn relatively quickly, and large particles tend to have a relatively long-lasting combustion. Those having different degrees interact with each other, so that combustion is stable and combustion is performed smoothly.
Moreover, the solid fuel from which ignition time and a thermal power differ is manufactured even if it is the solid fuel of the same shape by mixing the granular material from which a particle size differs in an appropriate ratio.

  Moreover, it is set as the structure which applied or / and impregnated the ignition agent as needed. Ignition is easy.

  According to the solid fuel of the present invention, since it is plate-shaped, it is easy to mount, and handling is extremely easy as compared with a conventional rod-shaped one, and because it is plate-shaped, stabilization of mounting is improved. In addition, since the solid fuel is formed in a plate shape and has a plurality of holes, air flows well through the holes of the solid fuel, so that the flame can easily reach the solid fuel and can be easily ignited. it can. Further, when ignited, the solid fuel is formed into a plate shape and a plurality of holes are formed, so that air flows well through the holes of the solid fuel, and combustion can be performed uniformly.

The degree of combustion of the solid fuel varies depending on the size of the solid fuel, particularly the outer shape, thickness, and the diameter and number of holes. If the density is made constant to some extent, the outer shape, thickness, and hole diameter and number are Since it can be easily set at the time of manufacture, the combustion time can be easily set and the required combustion time can be secured.
In addition, since the granular material is made of a natural material plant and does not contain excessive chemical substances, it is a natural cycle fuel, has conveniences suitable for the present age, and is a reasonable and economical fuel.

Hereinafter, a solid fuel according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
FIG. 1 shows a solid fuel F according to an embodiment of the present invention. This solid fuel F is formed by adding a binder 2 to a granular material Fa obtained by pulverizing charcoal made of plant carbide and forming it into a predetermined shape.

  For example, charcoal, bamboo charcoal, etc. are used for charcoal from Iwate, and the charcoal quality is preferably the highest grade. For example, in the case of charcoal from Iwate, a carbonization temperature of 500-700 ° C., refining 1-8, and calories of 7000-9500 cal / g are used.

The charcoal powder Fa is composed of a powder Fa having a particle diameter D of D ≦ 4 mm as the particle diameter D. Specifically, with respect to the weight of the entire granular material Fa, 25% to 35% by weight of the granular material Fa having D ≦ 1 mm, 10% to 20% by weight of the granular material Fa having 1 mm <D ≦ 2 mm, and 2 mm. <D ≦ 3 mm powder Fa is 15 wt% to 25 wt%, 3 mm <D ≦ 4 mm powder Fa is included 30 wt% to 40 wt%.
In the embodiment, the granular material Fa with D ≦ 1 mm is 30% by weight, the granular material Fa with 1 mm <D ≦ 2 mm is 15% by weight, the granular material Fa with 2 mm <D ≦ 3 mm is 20% by weight, and 3 mm < It contains 35% by weight of the granular material Fa with D ≦ 4 mm.

  As the binder 2, for example, an organic binder is used. Specifically, a paste containing a cellulose derivative, for example, sodium carboxymethyl cellulose (sodium cellulose glycolate) is used. The added weight is 5 to 15% by weight, preferably 8 to 12% by weight, based on the total powder Fa. In the embodiment, 10% by weight of a paste containing sodium carboxymethyl cellulose (sodium fibrin glycolate) is added.

And this solid fuel F is shape | molded in the rectangular plate shape by adding the binder 2 to the granular material Fa obtained by said grinding | pulverization. The size is set as, for example, a × b = (3 to 15) cm × (3 to 15) cm, and in the embodiment, 7 cm × 12 cm as a length a and a width b. The thickness t is set to 1 mm ≦ t ≦ 30 mm, preferably 5 mm ≦ t ≦ 25 mm. The density ρ varies depending on the type of charcoal, but is set to satisfy 0.4 g / cm ³ ≦ ρ ≦ 0.8 g / cm ³ . In the embodiment, ρ = 0.5 g / cm ³ .

Further, in the solid fuel F, a plurality of holes 1 penetrating over the upper and lower surfaces are formed. The holes 1 are formed in a matrix. The hole 1 has an upper surface area SA (a × b) of 10 to 2500 per SA = 100 cm ² . The diameter D of the hole 1 is set to 1 mm ≦ D ≦ 20 mm. In the embodiment, 18 holes / 100 cm ² and a diameter D = 5 mm are set.
Further, in this solid fuel F, the igniting agent 5 is applied or / and impregnated. In the embodiment, for example, an igniting agent 5 made of paraffin, alcohol or the like as a raw material is applied to the surface.

Next, the manufacturing method of the solid fuel F according to this embodiment will be described with reference to FIG. Here, the case where 12 pieces of the solid fuel F in which the weight of the granular material Fa is 50 g will be described.
(1) Stirring process First, the granular material Fa is put into the container 11, and an appropriate amount (for example, 500 to 800 ml) of water is added to be blended. The mixing ratio of the granular material Fa is 180 g of the granular material Fa having D ≦ 1 mm, 90 g of the granular material Fa having 1 mm <D ≦ 2 mm, 120 g of the granular material Fa having 2 mm <D ≦ 3 mm, and 3 mm <D ≦ The 4 mm powder Fa was 210 g, and the total was 600 g.

Next, the binder 2 is adjusted. For the binder 2, for example, a paste containing sodium carboxymethylcellulose (sodium fibrin glycolate) is used. Specifically, the product name “Casserose” (manufactured by Shikoku Kasei Kogyo Co., Ltd.) has a moisture content of 7.0% (max), a pure content of 53% (min), and a degree of etherification of 0.57 to 0.73. A powder of PH (1% solution) 8.0-10.0 was used. The amount of the binder 2 is 10% by weight of the granular material Fa. In this case, the amount of the binder 2 is 60 g. The binder 2 is put into the container 12, and an appropriate amount (for example, 500 to 800 ml) of water is added to dissolve it, and the mixture is kneaded into a paste.
And in the container 10, the granular material Fa which added water, and the binder 2 made into paste are mixed, and it stirs well and mixes.

(2) Pressing step The mixture 13 of the granular material Fa and the binder 2 is stretched into a plate shape. 5 to 10 bricks 14 such as bricks are placed on the plate-like mixture 13 and pressed for about 12 hours. At this time, the thickness is appropriately adjusted.

(3) Opening step After the pressing step, the guide wire 15 for cutting according to the shape to be finally made is inserted, and the hole 1 is opened using a punch or the like.

(4) Ignition agent application process Ignition agent 5 is applied.
(5) Drying step The plate-like mixture 13 is dried with a blower for 3 to 4 days.

(6) Cutting process It cuts according to the guide wire 15 put in the opening process. This completes the product.

  Next, an example of how to use the solid fuel F manufactured in this way will be described. As shown in FIGS. 3 and 4, this example is an example used for the desktop stove 20. The tabletop stove 20 is formed in a box shape with pottery, and an air hole 21 is provided on a side portion. Inside, a mounting table 30 on which the solid fuel F is mounted is provided. The mounting table 30 is formed by bending a metal plate, and includes a top plate 32 on which the solid fuel F is placed and a plurality of holes 31 are opened, and leg portions 33 provided on the left and right sides of the top plate 32. .

  Then, the solid fuel F is mounted on the top plate 32 of the mounting table 30 in the tabletop stove 20. In this case, since the solid fuel F is plate-shaped, it can be easily placed in the stove 20, is stable on the top plate 32, is extremely easy to handle as compared with conventional rod-shaped ones, and improves stability. It is done.

  In this state, the solid fuel F igniter 5 is ignited with a match or the like. Thereby, the solid fuel F ignites in several minutes. In this case, since the ignition agent 5 is applied to the solid fuel F, ignition is easily performed. In addition, since the solid fuel F is formed in a plate shape and has a plurality of holes 1, air is circulated well through the holes 31 of the top plate 32 and the holes 1 of the solid fuel F, so that the flame is solid fuel F. It spreads over the entire back surface of the solid fuel F and in the holes 1 of the solid fuel F, so that ignition is easily performed. In the case of general charcoal, it takes 15 to 20 minutes to ignite, but the solid fuel F of the present embodiment ignites in a few minutes and can be used quickly.

When the solid fuel F is ignited, the solid fuel F is formed into a plate shape and a plurality of holes 1 are formed. Therefore, air flows well through the holes 31 of the top plate 32 and the holes 1 of the solid fuel F, and combustion occurs. Done uniformly. In particular, since the holes 1 are formed in a matrix, the air flow is averaged and the combustion is performed more uniformly.
In addition, the solid fuel F charcoal particle Fa is 30% by weight of the particle Fa of D ≦ 1 mm, 15% by weight of the particle Fa of 1 mm <D ≦ 2 mm, and 2 mm <D ≦ 3 mm. 20% by weight of the body Fa and 35% by weight of the granular material Fa having a size of 3 mm <D ≦ 4 mm, so that the granular materials Fa having different particle sizes are dispersed with each other, and the granular material Fa having a small particle size burns relatively quickly. In addition, since the large granular material Fa tends to have a relatively long-lasting combustion, those having different degrees of combustion interact with each other, so that the combustion is stable and the combustion is smoothly performed.
And effects, such as a far infrared ray when a foodstuff is baked, are not different from the case of baking with normal solid charcoal. It is easy to clean up after use.

The degree of combustion of the solid fuel F varies depending on the size of the solid fuel F, particularly the outer shape and thickness, and the diameter and number of the holes 1. However, if the density is made constant to some extent, the outer shape, thickness, and hole 1 Since the diameter and number can be easily set at the time of manufacture, the combustion time can be easily set, and the required combustion time can be secured.
That is, for example, as shown in FIG. 5, if various solid fuels F are prepared according to the combustion time, the required combustion time can be ensured by appropriately selecting and using them.
Thus, in this solid fuel F, the effective combustion time after ignition can be set as appropriate, and there is an advantage that the commonly used paraffin and alcohol can use fire longer than the main raw material solid fuel. .
Also, the combustion time can be adjusted by dividing the solid fuel F. Further, since it is formed into a plate shape, the combustion time can be adjusted by overlapping.
Furthermore, since it is formed into a plate shape, it can be stored in a stacked manner, and can be stored more compactly than ordinary charcoal. Furthermore, since it is plate-shaped, it is not bulky and convenient for carrying around in outdoor activities.

  6 to 8 show a solid fuel F according to another embodiment. The solid fuel F shown in FIG. 6 is set to be thinner than the above, and the diameter of the hole 1 is also small. The solid fuel F shown in FIG. 7 is set thicker than the above, and the diameter of the hole 1 is also large. The solid fuel F shown in FIG. 8 has a circular outer shape. As described above, the size of the solid fuel F, in particular, the outer shape, the thickness, the diameter and the number of the holes 1 can be appropriately set at the time of manufacture, the combustion time can be easily set, and the required combustion time can be secured. .

  In FIG. 9, the solid fuel F which concerns on other embodiment is shown with an example of the usage method. The solid fuel F is substantially the same as described above, but an igniting agent is not applied unlike the above. When the solid fuel F is ignited, for example, a jelly-like igniting agent 22 is placed under the top plate 32, and the igniting agent 22 is ignited by a match or the like. Thereby, the solid fuel F ignites in several minutes. In this case, since the solid fuel F is formed into a plate shape and a plurality of holes 1 are formed, air is well circulated through the holes 31 of the top plate 32 and the holes 1 of the solid fuel F. The flame spreads through the hole 31 of the top plate 32 of the mounting table 30 to the entire back surface of the solid fuel F and also into the hole 1 of the solid fuel F, so that ignition is easily performed. In the case of general charcoal, it takes 15 to 20 minutes to ignite, but the solid fuel F of the present embodiment ignites in a few minutes and can be used quickly. Other actions and effects are the same as described above.

  In the above embodiment, the shape of the solid fuel F is not limited to a rectangular plate shape or a disk shape, and may be manufactured in various shapes such as a triangle or a star shape. In the above embodiment, charcoal is used as the carbonized material of the plant. However, the present invention is not necessarily limited to this. Of course, it may be the one that was made to be.

  According to the solid fuel of the present invention, it can be expected to be used not only for a desktop stove, but also for a charcoal appliance for business use for a long time, for cooking in a camp, and for a barbecue.

It is a perspective view which shows the solid fuel which concerns on embodiment of this invention. It is process drawing which shows the manufacturing method of the solid fuel which concerns on embodiment of this invention. It is a figure which shows the use condition of the solid fuel which concerns on embodiment of this invention. It is a perspective view which shows the solid fuel which concerns on embodiment of this invention with the mounting base which mounts this. It is a table | surface figure which shows the characteristic of the numerical value which concerns on the shape according to kind in the solid fuel which concerns on embodiment of this invention. It is a perspective view which shows another example of the solid fuel which concerns on embodiment of this invention. It is a perspective view which shows another example of the solid fuel which concerns on embodiment of this invention. It is a perspective view which shows another example of the solid fuel which concerns on embodiment of this invention. It is a figure which shows the other example of the solid fuel which concerns on embodiment of this invention with the use condition.

Explanation of symbols

F Solid fuel Fa Powder 1 Hole 2 Binder 5 Ignition agent D Particle size a Vertical dimension b Horizontal dimension t Thickness dimension SA (a × b) Top surface area 10 Container 11 Container 12 Container 13 Mixture 14 Weight 15 Guide wire 20 Desktop stove 21 Air hole 22 Ignition agent 30 Mounting table 31 Hole 32 Top plate 33 Leg

Claims (7)

In a solid fuel formed by adding a binder to a granular material made of plant carbide and molding it into a predetermined shape,
While forming into a plate shape and forming a plurality of holes that penetrate through the upper and lower surfaces ,
As the above-mentioned granular material, the particle size D is composed of granular material with D ≦ 4 mm,
A solid fuel comprising 30 to 40% by weight of 3 mm <D ≦ 4 mm as a granular material with respect to the weight of the whole granular material.   2. The solid fuel according to claim 1, wherein the holes are formed in a matrix. 3. The solid fuel according to claim 1, wherein the hole has an upper surface area SA of 10 to 2500 per SA = 100 cm ^{2 and} the diameter D of the hole is 1 mm ≦ D ≦ 20 mm.   4. The solid fuel according to claim 1, wherein the thickness t is 1 mm ≦ t ≦ 30 mm. 5. The solid fuel according to claim 1, wherein the density ρ is 0.4 g / cm ³ ≦ ρ ≦ 0.8 g / cm ³ .   As the above-mentioned granular material, 25% to 35% by weight of the granular material with D ≦ 1 mm and 10% to 20% by weight of the granular material with 1 mm <D ≦ 2 mm with respect to the weight of the whole granular material, 2 mm The solid fuel according to claim 1, 2, 3, 4 or 5, characterized in that it contains 15 wt% to 25 wt% of powder particles of <D ≤ 3 mm.   The solid fuel according to claim 1, 2, 3, 4, 5 or 6, wherein an ignition agent is applied or / and impregnated.

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