JP2015135204A - Portable-type solid fuel combustion unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a superior portable type solid fuel combustion unit showing a superior combustion efficiency that can keep stable combustion for longer hours and can be stored in compact.SOLUTION: This invention relates to a portable type solid fuel combustion device comprising a trough-like main body constituted as a double-wall structure with a substantial concave type in section formed by an outer wall, an inner wall and a space between the outer wall and the inner wall; a chimney constituted to have a size-relation in which it can be folded in a cavity part of the main body, its lower part is rotatably supported at one end side of the main body and at the same time constituted to be fixed to the main body when it is upright; a fuel feeding cylinder constituting a fuel feeding part removably and vertically set at the other end side of the main body; and a removable upper lid for closing between the chimney vertically set at the upper surface of the main body and the fuel feeding cylinder vertically set. An outer circumferential wall of the main body corresponding to a chimney installing position is provided with at least one intake opening, a space ranging from an outer end of the inner wall at the fuel feeding cylinder side to the chimney vertically set is provided with at least one opening for supplying air, and further at least a part of the wall below the upper lid is cut and removed at the lower end side of the chimney positioned at the fuel feeding cylinder side.

Description

The present invention relates to a portable solid fuel combustor that burns solid fuel, for example, firewood, charcoal, briquette, bean coal, and the like.

The demand for solid fuel has fallen sharply compared to decades ago. This may be because, in the recent living environment, the conventional combustor has been avoided because it takes time.
However, in recent years, combustors using solid fuel that does not use gas or electricity as in the past have been reviewed as countermeasures for outdoor booms and disasters.

These combustors are not only good in combustion efficiency, but are also supposed to be carried, so they are required to have excellent portability such as size and weight.

Examples of conventional solid fuel combustors include Patent Document 1 (Japanese Patent Laid-Open No. 9-28577) and Patent Document 2 (Japanese Patent Laid-Open No. 2009-19846).
JP-A-9-28577 JP2009-19846

The portable solid fuel combustor of Patent Literature 1 has a trunk-like shape in which the lid and the box have the same shape, and the lid and the box are opened and the tool housed inside is placed on the lid and the box. Assembled and used.

The combustion appliance disclosed in Patent Document 2 (Japanese Patent Application Laid-Open No. 2009-19846) is intended to provide a combustion appliance capable of maintaining a constant thermal power for a long time with plant-derived fuel.

However, in the device described in Patent Document 1, when the fuel starts to burn, the whole fuel is ignited and reaches a large thermal power, and the sustaining power is short due to the strong thermal power. In addition, since the combustion is performed in a state where the combustion portion is released to the surroundings, heat from the fuel is dispersed to the surroundings, which is inefficient in terms of effective use of thermal power. In addition to frequent fuel replenishment, a large amount of smoke was generated during combustion, which was inconvenient.

Moreover, although the thing of patent document 2 has the shape which can maintain the constant thermal power for a long time and can burn efficiently, the thing derived from the plant origin is made only that the main body can be decomposed | disassembled. Therefore, no mention is made of a method for storing parts after dismantling or a shape after dismantling, and portability is hardly considered.

The present invention has been made in view of the current situation, and an object of the present invention is to provide a solid fuel combustor that has good combustion efficiency, can be stably burned for a long time, can be stored compactly, and has good portability. It is said.

The invention according to claim 1 of the present invention for solving the above-mentioned problems is
A bowl-shaped main body configured in a double wall structure having a substantially concave cross section composed of an outer wall, an inner wall, and a space between them;
A chimney configured to be foldable in the concave portion of the main body, a lower part of which is rotatably supported on one end side of the main body, and configured to be fixed to the main body when standing vertically. ,
A fuel input cylinder constituting a fuel input portion detachably provided on the other end side of the main body; and
The upper surface of the main body has a detachable upper lid that covers the space between the chimney that stands vertically on the upper surface of the main body and the fuel injection cylinder that is erected. And at least one air supply opening between the outer end of the inner wall on the fuel input cylinder side and the chimney when standing vertically, and further positioned on the fuel input cylinder side of the chimney On the lower end side, a portable solid fuel combustor was obtained by cutting off at least part of the wall below the upper lid.

According to this configuration, the hot air after combustion is exhausted by the chimney, so that intake is mainly performed from the opening above the fuel supply cylinder. As a result, the flame when the solid fuel burns flows downward and flows into the main body. Solid fuel combustion progresses gradually to the windward side, the burned out fuel becomes ash, and new fuel descends from above and continues to burn. Therefore, combustion does not proceed at a stretch, a constant heating power can be continued for a long time, and for exhaust air provided between the chimney on the outer wall or the inner wall and the end on the chimney side by exhaust from the chimney Since outside air is taken in from the opening and air is also supplied into the main body from the air supply opening provided between the end of the inner wall on the fuel injection cylinder side and the chimney, air flows between the outer wall and the inner wall. In addition to making it difficult for heat to be transmitted to the outer wall, air that has been warmed while passing between the outer wall and the inner wall can be used for combustion, enabling stable combustion for a long period of time and disassembly and assembly of each component. As a result, the solid fuel combustor can be stored compactly and has good portability.

According to a second aspect of the present invention, in the portable solid fuel combustor according to the first aspect of the present invention, at least a part of the wall below the upper lid is cut off at least on the lower end side of the fuel injection cylinder located on the chimney side. The structure is as follows.

According to this configuration, combustion in the main body can be made smoother.

A portable solid fuel combustor according to a third aspect of the present invention is the portable solid fuel combustor according to the first or second aspect of the present invention, wherein the fuel injection cylinder can be accommodated in the main body with the chimney inserted therein or in the chimney. It was set as the structure comprised by the dimension.

According to this configuration, the dimensions of the fuel supply cylinder can be selected without losing compactness.

A portable solid fuel combustor according to a fourth aspect of the present invention is the portable solid fuel combustor according to any one of the first to third aspects, wherein the air supply opening includes an end edge of the inner wall side surface on the fuel injection cylinder side, and the fuel injection cylinder position. One or more structures are provided in the vicinity of an intermediate position with the above-described chimney position when standing vertically.

According to this configuration, so-called secondary combustion is performed in which the combustible gas and smoke generated from the solid fuel are combusted by the heat of the primary combustion downstream of the primary combustion in which the solid fuel stored in the fuel supply cylinder burns. Since air can be efficiently supplied to a place, combustion in the main body can be performed more efficiently.

A portable solid fuel combustor according to a fifth aspect of the present invention is the portable solid fuel combustor according to the first to fourth aspects, wherein the total opening area of the first air supply opening provided on the side of the fuel injection cylinder on the side of the inner wall is The structure is larger than the opening area of the second air supply opening provided in the vicinity of an intermediate position between the chimney position and the fuel injection cylinder position.

According to this configuration, since more air can be supplied to the primary combustion side where more air is required for combustion, combustion in the main body can be performed more efficiently.

A portable solid fuel combustor according to a sixth aspect is the invention according to the first to fifth aspects, wherein the second air supply opening is a slit-shaped opening having an angle of vertical to 45 degrees.

According to this configuration, since air can be supplied to the entire place where secondary combustion occurs, combustion in the main body can be performed more efficiently, and deformation of the entire combustor due to heat can be reduced. .

According to a seventh aspect of the present invention, the portable solid fuel combustor has a structure in which support legs are provided on the lower surface of the main body according to the first to sixth aspects of the invention.

According to this configuration, as shown in FIG. 1, the installation stability of the combustor itself during so-called use with the cooking utensil placed on the top of the chimney is increased, and the usability is improved.

A solid fuel combustor having good combustion efficiency, stable combustion for a long period of time, compact storage, and good portability can be provided.

Partial cross-sectional perspective view of combustor Sectional view when the combustor is viewed from the fuel injection cylinder side Partial enlarged cross-sectional view of the attachment part of the top lid when the combustor is viewed from the fuel injection cylinder side Perspective view of the combustor viewed from the chimney side, showing an example of installation of the intake opening Perspective view of the combustor viewed from the chimney side, showing an example of installation of the intake opening Partial cross-sectional perspective view of the combustor showing the cut state of the chimney bottom Sectional drawing which showed the dimensional relationship of the rotation center which has connected the chimney and the main body so that rotation is possible. Partial cross-sectional perspective view of the combustor showing the cut state of the lower part of the fuel input cylinder Partial cross-sectional perspective view of the combustor showing the installed state of the air supply opening Partial cross-sectional perspective view of the combustor showing the installed state of the air supply opening Partial cross-sectional perspective view of the combustor showing the installed state of the air supply opening Cross section when the combustor is seen from the fuel injection cylinder side, showing the installation of the insulation Cross section when the combustor is seen from the fuel injection cylinder side, showing the installation of the insulation Cross-sectional view of the combustor, with the fuel input cylinder lid attached Perspective view showing assembly procedure of combustor Perspective view showing assembly procedure of combustor Perspective view showing assembly procedure of combustor Perspective view showing assembly procedure of combustor Perspective view showing ignition procedure of combustor

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a partial cross-sectional perspective view showing a first embodiment of a portable solid fuel combustor, and FIG. 2 is a cross-sectional view seen from the end face on the chimney side of FIG.
As can be seen from both figures, the portable solid fuel combustor of the present invention has a bowl-shaped main body 3 configured in a double wall structure having a substantially concave cross section comprising an outer wall 1, an inner wall 2, and a space therebetween. 1 has a chimney 4 at one end, and an end wall 5 and a fuel injection cylinder 6 which are configured to be able to be opened and closed vertically while closing the other end at the other end of the main body 3. An upper lid 7 is installed to close the space between the chimney 4 and the standing fuel input cylinder 6.
The chimney 4 is formed by connecting holes provided on the side surfaces of the chimney 4 and the outer wall 1 and the inner wall 2 with a pin 8, and is rotatable about the pin 8.
In addition, as the intake opening 9 installed in the outer peripheral wall corresponding to the installation position of the chimney 4 of the main body 3, the intake opening 9 is installed outward at the outer end portion of the outer wall 1 on the chimney 4 side. Also, an air supply opening 10 is provided between the end of the fuel injection cylinder 6 on the inner wall 2 and the chimney 4 when it is set up vertically.

In this way, at the time of combustion, the solid fuel 20 (described later) stored in the fuel input cylinder 6 is first combusted (primary combustion), and is generated from the solid fuel 20 by the heat of primary combustion in the main body 3 downstream thereof. So-called secondary combustion occurs where combustible gas and smoke are combusted. Thereafter, the hot air after combustion is exhausted by the chimney 4, so that intake is performed mainly from the opening above the fuel injection cylinder 6. Thereby, the flame when the solid fuel 20 burns flows downward and flows into the main body 3. The combustion of the solid fuel 20 gradually progresses to the windward side, the burned solid fuel 20 becomes ash, and the new solid fuel 20 descends from above and continues to burn. Therefore, combustion does not proceed at a stretch, a constant heating power can be continued for a long time, and the exhaust from the chimney 4 leads to a space between the chimney 4 on the outer wall 1 or the inner wall 2 and the end on the chimney 4 side. Since the outside air is taken in from the intake opening 9 provided on the inner wall 2 and air is also supplied into the main body 3 from the air supply opening 10 provided between the end of the inner wall 2 on the side of the fuel injection cylinder 6 and the chimney 4, the outer wall Since air flows between the inner wall 2 and the inner wall 2, heat is not easily transmitted to the outer wall 1, and since the air warmed while passing between the outer wall 1 and the inner wall 2 can be used for combustion, stable for a long time Combustion is possible and each component can be disassembled and assembled, so that it can be stored compactly and portability can be realized.

Note that the end wall 5 only needs to be able to prevent air from flowing out of the body end on the side of the fuel injection cylinder 6 without being controlled. For example, the lower end of the fuel injection cylinder 6 located on the opposite side of the chimney 4 contacts the inner wall 2. When it is extended until the end wall 5 is used, the end wall 5 becomes unnecessary. Further, when the end wall 5 is provided with an openable / closable intake port, the end wall 5 may be fixed.

Further, a grate may be installed on the bottom surface of the inner wall 2 below at least the standing fuel input cylinder.
In this way, air is easily supplied to the fuel, the contact area between the fuel and the structure such as the inner wall 2 is reduced, and the structure is less likely to lose heat of combustion, so that more efficient combustion can be performed.
Since combustion itself can be realized without a grate, the presence and shape of the grate are not limited here.

FIG. 3 is a partially enlarged cross-sectional view showing a mounting portion of the upper lid 7 in the first embodiment.
As a method for attaching the upper lid 7, as shown in FIG. 3, a bent portion 11 is provided so that the upper side of the outer wall 1 is horizontal in the width direction. Further, the height of the inner wall 2 is slightly lowered, and the bent portion 12 is provided so that the upper side of the inner wall 2 is horizontal outward in the width direction. A gap 13 larger than the thickness of the upper lid 7 is formed between the bent portion 11 and the bent portion 12, and the upper lid 7 is inserted into the gap 13.
As for the size of the upper lid 7, it is desirable that it is in contact with the fuel supply cylinder 6 and the chimney 4 in a vertical state when in use. This is to prevent the chimney 4 from collapsing on the side of the fuel injection cylinder 6. By contacting the end wall 5, the movement of the main body 3 of the fuel injection cylinder 6 in the longitudinal direction is suppressed, and the fuel injection cylinder 6 and the upper lid 7 are prevented. This is because the movement of the upper lid 7 in the longitudinal direction of the main body 3 is suppressed, and the rotation of the chimney 4 can be restricted by the upper lid 7 and the chimney 4 being in contact with each other.

In the figure, as a method of suppressing the movement of the main body 3 of the fuel supply cylinder 6 in the longitudinal direction, a method of contacting the end wall 5 is used. However, the method is not limited to this. May be used to fasten the main body 3 and the fuel injection cylinder 6 or to provide a protrusion or fold at the end of the fuel injection cylinder 6 on the inner wall 2 to interfere with this, thereby suppressing the movement of the fuel injection cylinder 6.

Further, the width dimension of the upper lid 7 is smaller than the inner dimension in the width direction of the outer wall 1 in order to prevent falling between the inner walls 2 when being inserted and fixed in the gap 13 (“width direction of the vertical wall of the inner wall 2”). It is desirable that it is larger than “interval” + “inner dimension in the width direction of the outer wall 1” / 2.

4 and 5 show examples of installation of the intake openings 9.
In FIG. 4, the intake opening 9 is installed inward at the chimney 4 side outer end of the main body 3, and in FIG. 5, the intake opening 9 is installed at the end of the main body 3 on the chimney 4 side. 4 and 5 are merely examples, and the position of the intake opening 9 is not limited to this as long as it is an outer peripheral wall corresponding to the installation position of the chimney 4 of the main body 3, and the shape and the number of openings are not limited thereto. It is not limited.

FIG. 6 is a partial sectional perspective view showing the shape of the chimney 4 of the portable solid fuel combustor. The chimney 4 is shaped such that at least a part of the wall below the upper lid 7 is cut 14 on the lower end side located on the fuel supply cylinder 6 side.
If it does in this way, combustion gas will flow easily and combustion in main part 3 can be made smoother. Further, the opposite face, that is, the lower end on the downstream side in the combustion direction, comes into contact with the inner wall 2 when the chimney 4 is set up vertically. By doing so, the chimney 4 does not fall down in the direction of the chimney 4 side end of the inner wall 2 from the vertically raised state. In addition, the chimney 4 in use is fixed by a structure for preventing the fuel injection cylinder 6 from collapsing toward the fuel supply cylinder 6 using an upper lid 7 described later.

FIG. 7 is a cross-sectional view showing the dimensional relationship of the rotation center that rotatably couples the chimney 4 with the outer wall 1 and the inner wall 2, and the rotation center is the center of the pin 8 in this figure. And the center of the pin hole. The height dimension from the rotation center to the bottom surface of the inner wall 2 (distance a) is the distance from the bottom of the chimney 4 to the rotation center provided in the chimney 4 (distance b) (Distance a = distance b) and the distance from the wall of the chimney 4 on the fuel injection cylinder 6 side to the center of rotation of the chimney 4 (distance c) is the same or larger (distance a ≦ distance c) ) Is desirable.
Moreover, the structure which can rotate the chimney 4 is not limited to this, For example, you may fix the bottom of the chimney 4 and the bottom face of the inner wall 2 with a hinge etc.

Moreover, although the usage method which sets the cooking utensil 15 on the chimney 4 at the time of cooking so that it may mention later is assumed, the weight of the cooking utensil 15 is transmitted to the inner wall 2 from the contact part of the chimney 4 lower end at that time. Can increase durability and stability.

If there is no cutout in the downstream wall of the chimney 4, there may be a slight gap between the lateral wall of the chimney 4 and the inner surface of the main body 3. The smaller the gap, the better. However, up to about 10% of the inner surface width of the main body burns without problems.

Note that the shape of the chimney 4 is not limited to that illustrated in the drawing, and may be any shape as long as it functions.

FIG. 8 is a partial cross-sectional perspective view showing a second embodiment of the present invention. The second embodiment basically adopts the same shape as that of the first embodiment, but the shape of the fuel injection cylinder 6 is lower than the upper lid 7 on the lower end side located on the chimney 4 side. At least a part is changed so as to be excised 16. If it does in this way, combustion gas will flow easily and combustion in main part 3 can be made smoother.
Note that the shape of the fuel supply cylinder 6 is not limited to that illustrated in the drawing, and may be any shape as long as it functions.

Further, the size of the fuel supply cylinder 6 is set such that the chimney 4 can be inserted and stored in the recess of the main body 3. By doing in this way, the compactness at the time of accommodation is realizable, ensuring the length of the chimney 4 to the maximum, and ensuring the freedom degree of the dimension of the fuel injection cylinder 6. FIG. The longer the chimney 4 is, the stronger the intake air becomes, so that good combustion can be performed. In addition, the dimension of the fuel injection cylinder 6 should just be settled in the main body 3 with the chimney 4, and is good also as a dimension which can be accommodated in the chimney 4.
It should be noted that the fuel injection cylinder 6 or the chimney 4 has a part of the projection, and the chimney 4 may not be completely inserted or stored in the chimney 4 but may be stored in the main body 3.

FIG. 9 is a partial cross-sectional perspective view showing the fourth embodiment of the present invention. The fourth embodiment basically adopts the same shape as the first embodiment, but includes an air supply opening 10 on the inner wall 2, an end edge of the inner wall 2 on the side of the fuel injection cylinder 6, and The structure is changed so as to be provided in the vicinity of an intermediate position between the position of the chimney 4 when the fuel injection cylinder 6 is vertically set. (Hereinafter, the air supply opening at the edge on the fuel injection cylinder 6 side is in the vicinity of an intermediate position between the first air supply opening 10-1 and the position of the chimney 4 when standing vertically to the fuel injection cylinder 6 position. The air supply opening provided is described as a second air supply opening 10-2). Thus, the first air supply opening 10-1 uses the primary combustion air as the second air supply air. Since the air for secondary combustion can be supplied from the supply opening 10-2, a better combustion state can be created.

FIG. 10 is a partial cross-sectional perspective view showing the fifth embodiment of the present invention. Although the fifth embodiment basically adopts the same shape as the first embodiment, the opening of the first air supply opening 10-1 provided on the side of the fuel injection cylinder 6 on the side surface of the inner wall 2 is used. Changed so that the total area is larger than the opening area of the second air supply opening 10-2 provided in the vicinity of the intermediate position between the chimney 4 position and the fuel injection cylinder 6 position. doing. In this way, since more air can be supplied to the primary combustion that requires a lot of combustion air performed in the fuel input cylinder 6, better combustion can be realized.
In the figure, each of the first air supply opening 10-1 and the second air supply opening 10-2 is a single rectangular opening, but the shape and number are not limited to these. For example, a plurality of circular openings may be opened. However, in this case, the total area of the first air supply openings 10-1 needs to be larger than the total area of the second air supply openings 10-2.

FIG. 11 is a partial cross-sectional perspective view showing the sixth embodiment of the present invention. The sixth embodiment basically adopts the same shape as the first embodiment, but the second air supply opening 10-2 is a slit-shaped opening having an angle of vertical to 45 degrees. It has changed to become. In this way, not only can air be supplied to the entire place where secondary combustion occurs, but also when the inner wall 2 expands and contracts due to heat, the deformation can be absorbed and the deformation of the entire combustor can be reduced. it can.

In addition, as a measure for reducing thermal deformation, a number of convex shapes may be formed on the inner wall 2, the chimney 4, the end wall 5, the fuel injection cylinder 6, and the upper lid 7, which are easily heated by combustion, and may be used as ribs.

Moreover, you may install the heat insulating material 18 in the main body 3, for example, as shown in FIG. 12, the heat insulating material 18 is installed in the side surface and bottom face between the outer wall 1 and the inner wall 2, and the heat insulating material 18 and the inner wall 2 of FIG. You may arrange | position the heat insulating material 18 so that the outer wall 1 may be touched so that the passage of air may be ensured between them.
In this way, the air passing between the heat insulating material 18 and the inner wall 2 absorbs heat through the inner wall 2 and reduces the heat released to the outside by suppressing the thermal conductivity to the outer wall 1. Since the temperature of the air supplied to the combustion can be further increased, the safety to the outside can be improved in addition to realizing better combustion for the above-mentioned reason.

As a fixing method of the heat insulating material 18, an elastic body such as a metal clip is sandwiched between the inner wall 2 and the heat insulating material 18, a fastening material such as a protrusion or a bolt is provided on the inner wall 2, and the heat insulating material is sandwiched with the outer wall 1. A method of providing protrusions on the outer wall 1 or attaching the heat insulating material 18 to the outer wall 1 using a fastening material such as a bolt is conceivable, but is not limited here.

In FIG. 13, the heat insulating material 18 may be installed on the inner surface side of the inner wall 2. By doing in this way, the thermal conductivity to the inner wall 2 can be suppressed, and the temperature of the combustion performed in the space surrounded by the inner wall 2 and the upper lid 7 is difficult to drop, so that the combustion efficiency becomes higher and the inner wall Since heat is not easily transmitted to 2, durability is improved.

As a fixing method of the heat insulating material 18, a method of providing a protrusion on the inner wall 2, hooking the heat insulating material 18, or fastening to the inner wall 2 using a bolt or the like can be considered, but it is not limited here.

As shown in FIG. 14, a fuel input cylinder lid 18 that can be opened and closed may be installed at the upper end of the fuel input cylinder 6. By doing this, it is possible to suppress the discharge of smoke from the upper end opening of the fuel input cylinder 6 at the time of combustion, not only improve the surrounding environment, but also to take the discharged smoke into the main body and burn it, Increases firepower. The supply of combustion air when the fuel injection cylinder lid 18 is closed is mainly performed from the air supply opening 10 provided in the inner wall 2.
The fuel injection cylinder lid 18 does not need to be completely sealed, and may have a hole for taking in air. When the hole is provided, the shape and area are not limited, but it is preferably up to 1/3 with respect to the area of the fuel input cylinder lid 18. In this area, smoke does not flow back because the outside air is sucked from the hole during combustion.

The seventh embodiment of the present invention is changed to a structure in which a support leg 19 is provided on the lower surface of the main body 3.
Since this portable solid fuel combustor assumes that a heavy object such as a cooking utensil 15 is placed on the chimney 4, it is desirable to provide a support leg 19 on the lower surface of the main body 3 to increase stability.

In addition, since the support leg 19 is easy to fall down to the left-right direction and the chimney side from the shape of the combustor of this invention, it is desirable to extend in that direction. In addition, since the temperature of the surface of the main body 3 rises during combustion, it is desirable that the bottom of the outer wall 1 be lifted from the ground so as not to ignite surrounding combustible materials.
The shape and structure of the support leg 19 are not particularly limited. However, the support leg 19 has a folding structure in consideration of storability, and has a strength sufficient to withstand the weight when the cooking utensil 15 is installed on the upper lid 7 or the chimney 4. It is desirable that

A method of assembling the portable solid fuel combustor having the above configuration will be described with reference to FIGS.
FIG. 15 shows the combustor in the housed state.
As an assembling method, the upper lid is removed from the main body 3 in the housed state, and the chimney 4 and the fuel input cylinder 6 in which the chimney 4 is inserted are caused to reach a vertical state. (Fig. 16)
After the chimney 4 is in a vertical state, the upper lid 7 is inserted into the gap 13 between the outer wall 1 and the inner wall 2 of the main body 3 and inserted to a position where it comes into contact with the chimney 4. Next, the fuel input cylinder 6 is removed from the chimney 4. (Fig. 17)
The fuel input cylinder 6 removed from the chimney 4 is inserted into the gap between the end wall 5 on the fuel input cylinder 6 side of the main body 3 and the upper lid 7. (Fig. 18)

By adjusting the size of the fuel injection cylinder 6 to the gap formed by the end wall 5 and the upper lid 7, the movement of the upper lid 7 is eliminated after the fuel injection cylinder 6 is inserted, thereby fixing the chimney 4. If fixing of the upper lid 7 is not sufficient with only the fuel injection cylinder 6, it may be fixed using pins or screws.

.
The ignition method of the portable solid fuel combustor having the above configuration will be described with reference to FIG.
Solid fuel 20 is introduced into a fuel injection cylinder 6 attached to one end of the main body 3, the end wall 5 on the fuel injection cylinder 6 side is slid upward, and ignition is performed from a gap with the main body 3 formed at the lower part of the end wall 5. To do. Here, a notch is also provided on the end wall 5 side of the fuel supply cylinder 6, and the end fuel 5 is slid to create a gap with the main body 3 so that the solid fuel 20 can be accessed.
After the ignition is completed, the end wall 5 is slid down to close the gap.

When the solid fuel 20 is ignited, the solid fuel 20 stored in the fuel charging cylinder 6 is first burned (primary combustion). Next, combustible gas and smoke generated from the solid fuel 20 by the heat of combustion become so-called secondary combustion in the main body 3 downstream from the solid fuel 20, and the hot air is exhausted by the chimney 4. As the combustion of the solid fuel 20 proceeds, the force of the updraft becomes stronger and the exhaust power of the chimney 4 increases. At this time, intake is mainly performed from the opening above the fuel injection cylinder 6. Thereby, the flame when the solid fuel 20 burns always flows downward and flows into the main body 3. The combustion of the solid fuel 20 gradually progresses to the windward side, the burned solid fuel 20 becomes ash, and the new solid fuel 20 descends from above and continues to burn. Therefore, combustion does not proceed at a stretch, and a constant heating power can be continued for a long time. Further, by exhausting from the chimney 4, outside air is taken in from the intake opening 9 provided at the end of the outer wall 1 on the chimney 4 side, and air is also supplied into the main body 3 from the air supply opening 10 provided in the inner wall 2. The In this way, the air flows between the outer wall 1 and the inner wall 2 so that heat is not easily transmitted to the outer wall 1, and the air heated during the passage between the outer wall 1 and the inner wall 2 can be used for combustion. Get better.

Cooking can be performed by placing cooking utensils 15 such as virtues and pans on the chimney 4 that is in an upright state during combustion. Moreover, since flame passes through the main body 3 and the upper lid 7 and the upper lid 7 is heated, cooking can be performed on the upper lid 7. At this time, due to the five virtues, an opening is formed in the upper end of the chimney 4 and the bottom of the pan, or a structure for venting the combustion gas is provided, such as providing a vent hole in the upper end of the chimney 4. Is desirable.

1 Exterior wall
2 Inner wall
3 Body
4 Chimney
5 End wall
6 Fuel input cylinder
7 Upper lid
8 pin
9 Air intake opening
10 Air supply opening
10-1 First air supply opening (fuel injection cylinder side)
10-2 Second air supply opening (near the center)
11 Bending part on upper side of outer wall
12 Inner wall upper side bend
13 Clearance
14 Chimney resection
15 Cookware
16 Fuel injection cylinder excision
17 Insulation
18 Fuel injection cylinder lid
19 Support legs
20 Solid fuel

Claims (7)

A bowl-shaped main body configured in a double wall structure having a substantially concave cross section composed of an outer wall, an inner wall, and a space between them;
A chimney configured to be foldable in the concave portion of the main body, a lower part of which is rotatably supported on one end side of the main body, and configured to be fixed to the main body when standing vertically. ,
A fuel input cylinder constituting a fuel input portion detachably provided on the other end side of the main body; and
The upper surface of the main body has a detachable upper lid that covers the space between the chimney that stands vertically on the upper surface of the main body and the fuel injection cylinder that is erected. And at least one air supply opening between the outer end of the inner wall on the fuel input cylinder side and the chimney when standing vertically, and further positioned on the fuel input cylinder side of the chimney A portable solid fuel combustor, wherein at least a part of a wall below the upper lid is cut off at a lower end side. 3. The portable solid fuel combustor according to claim 1, wherein at least a part of a wall below the upper cover is cut off at least on a lower end side of the fuel injection cylinder located on the chimney side. 4. . The said fuel injection cylinder is comprised in the dimension which can insert the said chimney in the said main body, or is dimensioned so that it can be accommodated in the said chimney. Portable solid fuel combustor. One or more of the air supply openings are provided in the vicinity of the end portion of the inner wall side face on the fuel injection cylinder side and the intermediate position between the chimney position when standing vertically to the fuel injection cylinder position. The portable solid fuel combustor according to any one of claims 1 to 3. The total opening area of the first air supply opening provided on the side of the fuel injection cylinder on the side of the inner wall is provided in the vicinity of an intermediate position between the chimney position when standing vertically to the fuel injection cylinder position. The portable solid fuel combustor according to any one of claims 1 to 4, wherein the portable solid fuel combustor is larger than an opening area of the second air supply opening. 6. The portable solid fuel combustor according to claim 1, wherein the second air supply opening is a slit-shaped opening having an angle of vertical to 45 degrees. The portable solid fuel combustor according to any one of claims 1 to 6, wherein a support leg is provided on a lower surface of the main body.