JP6555596B2 - Combustion wood, set of combustion wood and ignition material, set of combustion wood and coated metal piece, method for burning combustion wood - Google Patents

Description

  The present invention relates to a combustion wood that can be burned well, and to a combustion wood that can sustain combustion well over a long period of time. Further, the present invention relates to a set of combustion wood and an ignition material capable of promoting combustion in the initial stage of combustion. Further, the present invention relates to a set of combustion wood and coated metal pieces that can burn the combustion wood only from its upper end so that the combustion continues. Furthermore, the present invention relates to a method for burning combustion wood capable of efficiently burning the combustion wood.

  For example, the thing of patent document 1 is proposed as an example of the wood for combustion which can be used for campfires, cooking, local heating, fireworks, etc. in outdoor activities.

  For example, as shown in FIG. 17, the combustion wood a described in Patent Document 1 includes a columnar wood main body b that can be erected and an approximate center of the upper end surface c of the wood main body b. And a horizontal hole g that penetrates the outer surface e of the wood body b and communicates with the lower end f of the vertical hole d. When the lower part h of the vertical hole d of the wood body b ignites, air is introduced into the vertical hole d through the horizontal hole g, and combustion gas is discharged from the opening j at the upper end of the vertical hole d. Could burn. Further, since the combustion wood a is supplied with air to the opening j at the upper end of the vertical hole d through the horizontal hole g, for example, the opening is made by directing the horizontal hole g toward or away from the wind. The amount of air supplied to j could be controlled.

  However, the combustion wood a having such a configuration has the following problems.

  The combustion gas is generated from a wood portion existing in the vicinity of the inner peripheral surface k by heating the inner peripheral surface k of the vertical hole d communicating with the horizontal hole g. In this case, since the number of the vertical holes d was only one, the amount of combustion gas generated was small in the initial stage of combustion.

  Thus, since the amount of combustion gas generated was small, the amount of combustion gas discharged from the upper end face c was small, and it was difficult for the combustion gas to ignite. Therefore, in the first stage after the lower part h of the vertical hole d ignites (initial stage of combustion), only smoke is generated from the upper end of the vertical hole d.

  Further, even if combustion at the lower portion h progresses and the amount of combustion gas discharged from the upper end surface c increases and the combustion gas ignites and is in a combustion state, the flame is thin. However, there is a problem that it tends to disappear due to the influence of the cross wind and the combustion in the initial stage is difficult to be performed.

  As described above, when the combustion wood a is used, in the initial stage of combustion, there is an inconvenience that the combustion gas must be thrown away as smoke, and even if combustion starts, this combustion is sustained well. There was a difficult problem.

  If the diameter of the vertical hole d is increased, the area of the inner peripheral surface k is increased accordingly, so that it is not considered that more combustion gas can be generated from the inner peripheral surface. However, even if the area of the inner peripheral surface is increased, if the heating power due to the ignition of the lower portion of the vertical hole c does not change, the hot air generated in the horizontal hole g may cause a central portion of the expanded vertical hole d to Due to the lack of heat due to the ease of passing upward, the heating of the inner peripheral surface k becomes insufficient, and the amount of combustion gas generated from the inner peripheral surface k becomes very small. In order to increase the amount of combustion gas generated on the inner peripheral surface k, the entire inner peripheral surface k must be heated to a required temperature according to the area of the expanded inner peripheral surface k. become. Therefore, when the diameter of the vertical hole d is increased, the heating power in the lower portion h of the vertical hole d must be increased so that the entire inner peripheral surface k can be heated to a required temperature. There was a problem that required strong ignition materials.

  Further, as another problem of the combustion wood a, in the combustion wood a, the side hole g is provided in a state of penetrating the outer side surface e of the wood body b, so that the wind is blown. In this case, since the air flowing into the horizontal hole g easily passes through the horizontal hole g, it is difficult for the air to flow into the vertical hole d. For this reason, the flame accompanying combustion in the lower portion h of the vertical hole d is unlikely to rise in the vertical hole d, so that the inner peripheral surface k of the vertical hole d is difficult to be heated, and combustion gas is not generated on the inner peripheral surface. There was a problem of stability.

  Further, when combustion is performed in the horizontal hole g, if there is no wind, the air flowing in from the end m of the horizontal hole g rises through the vertical hole d, but the wind is blowing. Thus, the flame in the horizontal hole f escapes from the other end m2 on the opposite side by the wind blown from one end m1 of the horizontal hole f, and the end of the horizontal hole f on the air inflow side Not only the edge portion p1 but also the edge portion p2 of the side hole g on the air outflow side started to burn, and this caused the outer surface e of the wood body a to burn out all at once. In this case, the burning time of the burning wood a is shortened, and even if the burning wood a is slowly burned from the inner side toward the outer edge side, such a burning state cannot be obtained. there were. In addition, if the outer surface e of the wood body b starts to burn early in this way, such a situation may occur even if the outer surface of the wood in the burning state is gripped by the hand and the installation location is changed. There was also a problem that became impossible early.

JP 2011-1417 A

  The present invention has been developed in view of the above-mentioned conventional problems, and an object of the present invention is to provide combustion wood that can be burned well. Another object of the present invention is to provide combustion wood that can sustain combustion well over a long period of time. Another object of the present invention is to provide a set of combustion wood and an ignition material that can promote combustion in the initial stage of combustion. It is another object of the present invention to provide a set of combustion wood and coated metal pieces that can burn the combustion wood only from its upper end so that the combustion continues. It is another object of the present invention to provide a combustion wood burning method capable of efficiently burning the combustion wood.

In order to solve the above problems, the present invention employs the following means.
That is, the first aspect of the combustion wood according to the present invention is a blind horizontal combustion in which the axis is in the columnar shape with the axis extending in the vertical direction, and is opened in the outer surface of the wood body and the axis is in the horizontal direction. A hole is provided, and an inner vertical combustion that opens at the upper end surface of the wood body and extends in the longitudinal direction and communicates with the lateral combustion hole at the lower end is provided in a central portion or a peripheral portion of the wood body. A plurality of holes are provided.

  According to a second aspect of the combustion wood according to the present invention, in the first aspect, the wood main body is provided with the inner vertical combustion hole so as to extend in the longitudinal direction at the central portion thereof, and a peripheral portion thereof. Is characterized in that a plurality of the inner vertical combustion holes are provided on substantially the same circumference centering on the inner vertical combustion hole.

  According to a third aspect of the combustion wood according to the present invention, in the first aspect, the wood main body is provided with the inner vertical combustion hole along an axis thereof, and a peripheral portion thereof is provided with the inner side. A plurality of the inner vertical combustion holes are provided on substantially the same circumference centered on the vertical combustion holes.

  According to a fourth aspect of the combustion wood according to the present invention, in the second or third aspect, the inner vertical combustion holes provided on the substantially same circumference are 4 to 10 at an equiangular pitch. The book is provided.

  According to a fifth aspect of the combustion wood according to the present invention, in any one of the first to fourth aspects, the outer edge of the wood body is open at the upper end surface of the wood body and extends in the vertical direction. The outer vertical combustion hole is provided, and the outer vertical combustion hole does not communicate with the horizontal combustion hole.

  According to a sixth aspect of the wood for combustion according to the present invention, in any one of the first to fourth aspects, the upper end surface of the wood body opens on the outer edge side of the wood body and extends in the vertical direction. An outer vertical combustion hole is provided, and the lower end of the outer vertical combustion hole is located 10 to 30 mm above the upper end of the horizontal combustion hole.

  In a seventh aspect of the wood for combustion according to the present invention, in any one of the first to sixth aspects, a windshield recess is provided by recessing a central portion of the upper end surface of the wood body. The upper end of the inner vertical combustion hole is opened at the bottom of the windshield recess.

  According to an eighth aspect of the combustion wood according to the present invention, in the fifth or sixth aspect, the wood body is formed in a square column shape having a square shape in plan view, and the outer vertical combustion hole is It opens at the four corners of the upper end surface of the wood body and extends in the vertical direction.

  A ninth aspect of the wood for combustion according to the present invention is characterized in that a plurality of the outer vertical combustion holes are provided at intervals on the diagonal line of the upper end surface.

  According to a tenth aspect of the combustion wood according to the present invention, in any one of the first to ninth aspects, the entire outer surface of the wood main body is a coated metal except for an open end of the lateral combustion hole. It is characterized by being covered with a piece.

  According to an eleventh aspect of the wood for combustion according to the present invention, in the tenth aspect, an upper portion of the coated metal piece protrudes above the upper end surface, and a windbreak recess is provided inside the upper portion. It is characterized by being.

  A first aspect of the set of combustion wood and ignition material according to the present invention is the combustion wood according to any one of the first to eleventh aspects, and the wood main body of the combustion wood. And an ignition material disposed on the upper end surface side to assist combustion at the upper end surface.

  A second aspect of the set of combustion wood and ignition material according to the present invention is the set of combustion wood and ignition material according to the first aspect, wherein the lower portion of the ignition material is fitted into the upper end surface. For this purpose, it is characterized in that a fitting recess portion is provided, or a fitting groove portion for fitting the ignition material is provided in an edge portion of the upper end surface.

  The set of the combustion wood and the coated metal piece according to the present invention is the combustion wood according to the first aspect, wherein the wood body is configured as a prism having a square shape in plan view. And a coated metal piece that can coat the entire outer surface of the wood body of the burning wood, the coated metal piece is configured with a metal plate that can be bent, Is characterized in that a crease is provided at a portion of the wood body corresponding to a corner portion seen in the circumferential direction.

  The combustion method of combustion wood according to the present invention comprises arranging an ignition material on the side of the upper end surface of the wood body and the lateral combustion hole of the combustion wood according to any of the first to fourteenth aspects, Combustion gas that is ignited by the ignition material, heats the inner peripheral surface of the inner vertical combustion hole by hot air generated by the combustion of the ignition material in the horizontal combustion hole, and is generated and increased on the inner peripheral surface by the heating Is ignited and burned by the igniting material in a combustion state disposed on the upper end surface side.

The present invention has the following excellent effects.
According to the present invention, it is possible to provide a wood for combustion that can be burned well. Moreover, the wood for combustion which can maintain combustion favorably over a long time can be provided. In addition, when the combustion wood and the ignition material according to the present invention are used, combustion can be promoted in the initial stage of combustion. Further, when the combustion wood and the coated metal piece according to the present invention are used, combustion can be continued in a state where the flame rises only from the upper end of the combustion wood. Furthermore, when the combustion wood burning method according to the present invention is used, the combustion wood can be burned efficiently.

It is a perspective view which shows the wood for combustion which concerns on this invention. FIG. It is the longitudinal cross-sectional view. It is the longitudinal cross-sectional view. It is the longitudinal cross-sectional view. It is a perspective view which shows the state just before burning wood for combustion. It is a perspective view which shows the state which is burning the wood for combustion. It is a perspective view which shows the wood for combustion by which a windshield recessed part is provided in an upper end surface. It is the perspective view which shows the state which coat | covered the whole outer surface of the wood main body with the covering metal piece except for the opening end of a horizontal combustion hole, and a fragmentary sectional view. It is a top view which illustrates the wood for combustion whose cross-sectional shape of a wood main body exhibits a rectangular shape. It is a top view which illustrates the wood for combustion whose cross-sectional shape of a wood main body exhibits circular shape. It is a top view which illustrates the wood for combustion which provides two outer side vertical combustion holes in each of the four corner parts of the said upper end surface of a wood main body. It is a top view which illustrates the wood for combustion formed by forming all of an inner side vertical combustion hole and an outer side vertical combustion hole as a circular hole about 10 mm in diameter. Exemplified is a combustion wood in which the diameter of the inner vertical combustion hole provided along the axis of the wood body is made relatively large, and the diameters of the other inner vertical combustion holes and the outer vertical combustion holes are made relatively small. FIG. It is a top view which illustrates the wood for combustion formed by making the diameter of an inner side vertical combustion hole and an outer side vertical combustion hole comparatively large with about 15 mm. It is a top view which illustrates the wood for combustion which shifts the axis line of an inside vertical combustion hole to the opposite side of the opening end of a horizontal combustion hole. It is the perspective view and sectional drawing which illustrate the conventional wood for combustion.

  1 to 5, a combustion wood 1 according to the present invention is a lower portion 5 of a wood body 3 having a columnar shape with an axis 2 in the vertical direction, and is opened at an outer surface 6 of the wood body 3, and an axis 7 is in a lateral direction. A blind horizontal combustion hole 9 is provided. A plurality of inner vertical combustion holes 11 that open at the upper end surface 10 of the wood main body 3 and extend in the vertical direction and communicate with the horizontal combustion holes 9 at the lower end are formed in the central portion or the peripheral portion of the wood main body 3. A book is provided. Further, an outer vertical combustion hole 13 that opens at the upper end surface 10 of the wood main body 3 and extends in the vertical direction is provided on the outer edge side 12 of the wood main body 3, and the outer vertical combustion hole 13 is provided in the horizontal direction. It does not communicate with the combustion hole 9. In this embodiment, the lower end 15 of the outer vertical combustion hole 13 is positioned 10 to 30 mm above the upper end 16 of the lateral combustion hole 9 as shown in FIGS. When the combustion wood 1 having such a structure is burned, an ignition material 32 is disposed on the side of the horizontal combustion hole 9 and the upper end face 10 of the wood body 3 to ignite the ignition material 2.

  The combustion wood 1 will be described more specifically as follows. In the present embodiment, the wood main body 3 is made of a scrap material discharged from a lumber mill or a wood pre-cut factory, for example, a scrap material such as a pole or cedar pillar material or a beam material. As shown in FIGS. 1 and 2, for example, the wood body 3 is formed in a square column shape having a square shape in a plan view and an axis line in the vertical direction, and the length of one side of the square is, for example, about 105 mm. The height is, for example, about 200 mm. Since the length of the wood main body 3 is set to about 200 mm, the inner vertical combustion hole 11 and the outer vertical combustion hole 13 can be easily drilled, and the wood main body 3 can be easily carried. It is.

  As shown in FIG. 3, the wood main body 3 having a prismatic shape is opened at one outer surface 6 a at the lower portion 5 toward the inside of the wood main body 3 (the one outer surface 6 a The lateral combustion hole 9 is provided as a blind hole extending in the lateral direction (toward the outer side surface 6b). The diameter of the horizontal combustion hole 9 is set to about 55 mm, for example, and the length in the horizontal direction is set to about 85 mm, for example. Therefore, in this embodiment, the distance between the back end 19 of the horizontal combustion hole 9 and the opposed outer surface 6b is set to about 20 mm. The distance between the lower end 20 of the horizontal combustion hole 9 and the lower end 21 of the wood body 3 is set to about 35 mm, for example.

  In addition, the wood body 3 has the inner longitudinal combustion hole (hereinafter referred to as “the longitudinal body” in the longitudinal direction in the present embodiment along the axis 2 of the wood body 3) as shown in FIGS. 11 (also referred to as a first inner vertical combustion hole 11a), and the peripheral portion 22 also has the inner vertical combustion hole on substantially the same circumference centering on the first inner vertical combustion hole 11a. (Hereinafter, it is also called the 2nd inner side vertical combustion hole 11b) 11-10 is provided by the substantially equiangular pitch. In this embodiment, eight are provided. In this embodiment, the diameter of the first inner vertical combustion hole 11a and the diameter of the second inner vertical combustion hole 11b are set to be equal, and the second inner vertical combustion hole 11b is at each apex of the regular octagon. Has been placed.

  The diameter of the first inner vertical combustion hole 11a and the diameter of the second inner vertical combustion hole 11b are about 13 mm, for example, and between the second inner vertical combustion holes 11b and 11b adjacent in the circumferential direction. For example, a wall portion 23 (FIG. 2) having a thickness of about 5 mm is provided, and, for example, about 10 mm is provided between the first inner vertical combustion hole 11a and each of the second inner vertical combustion holes 11b adjacent thereto. A wall portion 25 (FIG. 2) is provided. And all of this 1st inner side vertical combustion hole 11a and this 2nd inner side vertical combustion hole 11b are connected to the said horizontal combustion hole 9 by the lower ends 26 and 26, as shown to FIGS. .

  In this embodiment, as shown in FIGS. 3 to 5, the wood body 3 is open at the upper end surface 10 on the outer edge side (four corner portions 27, 27, 27, 27 in this embodiment) and is vertically The outer vertical combustion hole 13 having a bottom extending in the direction is provided. All of the outer vertical combustion holes 13 do not communicate with the horizontal combustion holes 9. In the present embodiment, the lower end 15 of the outer vertical combustion hole 13 is positioned 10 to 30 mm above the upper end 16 of the horizontal combustion hole 9 as described above. In this embodiment, it is positioned on the upper side, for example, about 20 mm.

  According to the experiment of the present inventor, when the wood body 3 is configured to the size, if the amount to be positioned on the upper side is shorter than 10 mm, the wood body 3 is enlarged by the combustion in the lateral combustion hole 9. This is not preferable because the time until the horizontal combustion hole 9 communicates with the outer vertical combustion hole 13 is shortened and the combustion time of the wood body 3 is shortened. On the other hand, if the amount is longer than 30 mm, the four corner portions 27, 27, 27, 27 of the wood body 3 are liable to remain unburned, which is not preferable.

  Next, the combustion state of the combustion wood 1 having such a configuration will be described. FIG. 6 shows a case where the combustion wood 1 is placed on the support 30 and burned, and an ignition material 32 is placed on the lower end portion 20 of the horizontal combustion hole 9 (the state where this is placed). Is a mode in which the ignition material 32 is disposed in the horizontal combustion hole 9), and a similar ignition material 32 is provided at an intermediate portion between the adjacent outer vertical combustion holes 13, 13 on the upper end surface 10. The state (the state which has arrange | positioned this ignition material 32 in the said upper end surface 10 side) has been shown. In this state, these ignition materials 32 are ignited. Since the air necessary for the combustion is sequentially supplied from the open end 35 of the horizontal combustion hole 9 to the ignition material 32a in the horizontal combustion hole 9, the ignition material 32a can continue to burn without disappearing. As these ignition materials 32, for example, various materials that can be easily ignited, such as those obtained by solidifying sawdust with wax, can be used.

  All of the inner vertical combustion holes 11 are communicated with the horizontal combustion holes 9 at the lower end 26 (FIGS. 3 to 4), and thus are generated as the ignition material 32a in the horizontal combustion holes 9 burns. The hot air rises while heating the inner peripheral surface 37 of each of the inner vertical combustion holes 11. As a result of the hot air rising while heating the inner peripheral surface 37 in this way, combustion gas is continuously generated from the inner peripheral surface 37 of all the inner vertical combustion holes 11. Since the total area of the inner peripheral surface 37 that generates the combustion gas increases in accordance with the number of the inner vertical combustion holes 11, a large amount of combustion gas can be generated. A large amount of combustion gas generated in this way gathers on the upper end surface 10. As shown in FIG. 7, the combustion gas collected on the upper end surface 10 is easily ignited because oxygen is supplied thereto and the ignition material 32b is in a combustion state, and the flame 38 is gathered together and thickened. Burns well, like a flame of a candle. Therefore, the flame hardly disappears, and a strong heating power can be obtained even in the initial stage of combustion.

  Thus, when the wood for combustion 1 is used, there is an economy in which a thermal power can be obtained by burning almost without generating smoke even in the initial stage of combustion (for example, about 10 minutes from the start of combustion).

  By the way, the flame in the initial stage is not generated at the upper end surface 10 but is raised from the upper end surface 10 and is burned to the upper end surface 10. Is not enough to ignite. The combustion of the combustion gas is continued well even when the ignition material 32b is burned out when the combustion has progressed to some extent.

  This is compared with the technique according to Patent Document 1. As described above, in the technique according to Patent Document 1, the vertical hole d communicating with the horizontal hole g is only one that passes through the approximate center of the upper end surface c of the wood body b and goes to the inside of the wood body b. . For this reason, the area of the inner peripheral surface k of the vertical hole d serving as a generation source of the combustion gas is small, and therefore the amount of combustion gas generated in the initial stage of combustion is small. Therefore, the combustion gas discharged from the upper end face c is difficult to ignite and is generated when smoke is accumulated. Even when the combustion gas is in a combustion state, the flame is thin, and it is easy for the flame to disappear due to the influence of cross wind. Thus, when the wood for combustion according to Patent Document 1 is used, there is a problem that combustion in the initial stage is difficult to be performed satisfactorily. On the other hand, in the present invention, as described above, since the number of the inner vertical combustion holes 11 communicating with the horizontal combustion holes 9 is plural, the inner peripheral surface 37 serving as a combustion gas generation source. The area as a whole is large. Therefore, as described above, the amount of generated combustion gas is large. Therefore, the combustion gas discharged from the upper end surface 10 is easily ignited, and the flame is thick and hardly disappears. As a result, a strong heating power can be obtained even in the initial stage of combustion.

  As the combustion of the combustion gas continues, the inner surface of the horizontal combustion hole 9 ignites and begins to burn, and the inner peripheral surface 37 (FIGS. 3 to 4) of the horizontal combustion hole 9 expands due to the combustion. To go. Accordingly, between the adjacent inner vertical combustion holes 11 and 11 (between each of the first inner vertical combustion holes 11a and the second inner vertical combustion holes 11b and adjacent second inner vertical combustion holes 11b. 11b and 11b), the internal wood portion 39 (the wall portion 23) is opposed to the opposite sides 40 and 40 (by the hot air rising up the inner vertical combustion holes 11 and 11 adjacent to each other across the wood portion 39). Since it is heated from FIG. 3, the temperature rises within a short time. As a result, the internal wood portion 39 serves as a combustion gas generation source, and combustion gas is actively generated from the wood portion 39, which flows into the respective inner vertical combustion holes 11 and is discharged at the upper end face 10. Is done. In particular, the amount of combustion gas flowing into the first inner vertical combustion hole 11 a is large and is discharged from the upper end surface 10.

  The reason why the amount of combustion gas flowing into the first inner vertical combustion hole 11a is large is that, in this embodiment, as described above, substantially the same circumference around the first inner vertical combustion hole 11a. A plurality of the second inner vertical combustion holes 11b are provided on the upper side, and a combustion gas generation source is provided between the first inner vertical combustion hole and each second inner vertical combustion hole 11b. This is because the wood portion 39 is provided.

  As a result, a large amount of combustion gas is discharged from the upper end face 10, and as a result, the momentum of the flame at the upper end face 10 increases. In this embodiment, since the amount of combustion gas flowing into the first inner vertical combustion hole 11a is large, the combustion state at the center of the flame is stable, and the combustion state as a whole flame is more stable. Will be.

  Thus, as the momentum of the flame at the upper end surface 10 increases, the temperature of the wood portion (the wood portion on the first inner longitudinal combustion hole 11a side) 41 around the outer longitudinal combustion hole 13 is increased. As a result, a large amount of combustion gas is generated from the surrounding wood portion 41 as well. The combustion gas flows into the outer vertical combustion hole 13 and the second inner vertical combustion hole 11b and is discharged from the upper end surface 10.

  This point is compared with Patent Document 1. Since the number of the vertical holes d in Patent Document 1 is only one, the combustion gas generated in the vertical holes d when the hot air generated in the horizontal holes g rises in the vertical holes d is generated on the inner peripheral surface k of the vertical holes d. It was only from the tree part in the neighborhood. The wood portion existing inside the inner peripheral surface k has a low temperature and cannot generate combustion gas. On the other hand, in the present invention, the wood portion 39 existing inside the inner peripheral surface 37 is heated from the opposite sides 40, 40, so that the wood portion 39 is also A large amount of combustion gas can be generated. This is one of the features of the present invention.

  The outer vertical combustion hole 13 is not connected to the horizontal combustion hole 9 as described above, and the lower end 15 of the outer vertical combustion hole 13 is positioned above the upper end 16 of the horizontal combustion hole 9. Therefore, even if the horizontal combustion hole 9 expands due to combustion, the horizontal combustion hole 9 does not immediately connect to the lower end 15 of the outer vertical combustion hole 13. Therefore, the combustion state in which the flame in the horizontal combustion hole 9 does not immediately flow into the outer vertical combustion hole 13 and the supply of oxygen from the horizontal combustion hole 9 is interrupted can be maintained for a certain time. it can. Therefore, in the initial stage of combustion in the outer vertical combustion hole 13, the inner peripheral surface portion of the outer vertical combustion hole 13 is in a steamed state, and only combustion gas is generated. The generated combustion gas is sequentially supplied to the combustion portion of the combustion gas in the central portion 42 of the upper end surface 10 and burned.

  As described above, the combustion gas generated from the outer vertical combustion hole 13 exerts an auxiliary action of combustion against the combustion in the central portion 42 (FIG. 7). By this auxiliary action of combustion, the flame at the upper end surface 10 can be further increased, and the heating power at the upper end surface 10 can be made larger. When the amount of combustion gas generated in the central portion 42 decreases with time, the combustion in the central portion 42 can be continued without reducing the flame. This is achieved because the lower end 15 of the outer vertical combustion hole 13 is not communicated with the horizontal combustion hole 9.

  In this way, combustion of the combustion gas continues for a certain time. According to the experiment by the present inventor, in the combustion wood 1 having the above-described dimensions, the combustion of the combustion gas continued for about 10 minutes. Then, after the combustion of the combustion gas continued for about 10 minutes, the upper end surface 10 reached the ignition temperature and ignited. Thereafter, the burning wood 1 burned slowly over time from the central portion toward the outside.

  In the initial stage of combustion, the combustion is continued as described above, but as a result of the rise of hot air in the inner vertical combustion hole 11, the inside of the horizontal combustion hole 9 becomes a negative pressure state. The opening end 35 functions as an outside air inlet. Therefore, the flame is suppressed from coming out from the opening end 35, and the edge portion 43 of the opening end 35 is not easily heated even if some flame is emitted.

  For this reason, even if the lateral combustion hole 9 is a blind hole, the edge portion 43 of the opening end 35 and the outer surface 6 provided with the edge portion 43 are not easily burned, as described above. In addition, the combustion gas can be satisfactorily generated in the inner vertical combustion hole 11, and the combustion duration time of the combustion gas can be made longer.

  When the horizontal combustion hole 9 expands due to combustion and the edge portion 43 of the open end 35 of the horizontal combustion hole 9 becomes hot, the edge portion 43 burns out. However, the horizontal combustion hole 9 is blind as described above. Since it is formed as a hole, the outer surface (hereinafter also referred to as the rear outer surface) 6b facing the outer surface (hereinafter also referred to as the front outer surface) 6a where the open end 35 exists does not burn immediately.

  When the combustion wood 1 having the above-described configuration is used, the outer surface 6 excluding the outer surface 6a (the previous outer surface) where the opening end 35 exists is for a certain time (for example, about 30 minutes) after starting combustion. Since it is not so hot, it is also possible to move the wood in the burning state by gripping the outer side surfaces 6c and 6d on the left and right sides as necessary. Also, when there is wind, it is also possible to hold the wood in the combustion state by hand and direct the open end 35 to the leeward in order to reduce the amount of air flowing into the horizontal combustion hole 9. It is. As a result, the combustion time of the combustion wood 1 can be made as long as possible, and the combustion wood 1 can be burned effectively for a longer time.

  If the horizontal combustion hole 9 is configured as a through-hole as in Patent Document 1, a flame (hot air) comes out from the opening end facing the opening end 35 of the horizontal combustion hole 9. It is dangerous to hold and move wood in a burning state by hand as described above. In the present invention, since the horizontal combustion hole 9 is configured as a blind hole, the outer side surface 6a where the open end 35 exists is excluded for a certain time (for example, about 30 minutes) after starting combustion as described above. Since the outer surface 6 is not so hot, such movement is possible.

  In addition, since the horizontal combustion hole 9 is not configured as a through hole, unlike the combustion wood according to Patent Document 1, when combustion occurs in the horizontal combustion hole 9, the opening end on the opposite side No flame is blown out, and the edge portion of the opening end is heated and burned out, causing no combustion of the rear outer surface 6b. For this reason, when the wood for combustion 1 is used, the combustion time can be made longer.

  As the combustion proceeds in this way, the lower end 15 of the outer vertical combustion hole 13 is connected to the lateral combustion hole 9 expanded by the combustion. For example, it will be in the state which continued in about 20 minutes from the combustion start. Thereafter, all the outer surfaces 6a, 6b, 6c, 6d start to burn, and the whole is burned, but the outer vertical combustion hole 13 is not in communication with the horizontal combustion hole 9, Even if the horizontal combustion hole 9 is enlarged by combustion in the horizontal combustion hole 9, the outer vertical combustion hole 13 does not easily communicate with the horizontal combustion hole 9. Until the outer vertical combustion hole 13 is connected to the horizontal combustion hole 9, oxygen is not supplied to the outer vertical combustion hole 13, and thus the outer vertical combustion hole 13 continues to emit combustion gas satisfactorily. be able to.

  For this reason, the four corner portions 27, 27, 27, 27 tend to be carbonized due to poor combustion gas, and as a result, the lower side of the horizontal combustion hole 9 in the four corner portions 27, 27, 27, 27. A large lump of charcoal can be produced in the portion excluding the portion 45. Therefore, the four corner portions of the combustion wood 1 do not remain burned as a wood portion, and the combustion wood 1 is efficiently combusted in its entirety excluding the lower portion 45 of the lateral combustion hole 9. It can be made.

  As described above, the combustion of the combustion wood 1 can be performed so that the outer surface 6 of the wood body 1 is not burned immediately, so that the combustion can be continued for a long time. And since the said outer side vertical combustion hole 13 can be made into a steaming state as mentioned above, in the state which combustion was completed, a big charcoal will remain in the said four corner parts 27,27,27,27. When using the wood for combustion 1, the flame can be enjoyed for about 30 to 40 minutes after the start of combustion. The remaining charcoal can be used for warming up as a charcoal fire by leaving it as it is. This state can be continued for about 30 to 40 minutes. The charcoal thus obtained can be used for cooking such as barbecue.

  And, at the end of such combustion, there are unburned portions 27, 27, 27 of about 20 mm below the horizontal combustion hole 9, and the remaining lower portion 45 grips this by hand. Can be easily disposed of.

  FIG. 8 shows another embodiment of the combustion wood 1 according to the present invention. The wood body 3 has the same configuration as that shown in the embodiment 1 in this embodiment, and is square in plan view. It is configured in a prismatic shape having a shape and an axis line in the vertical direction. And the windshield recessed part 47 is provided by denting the center side part of the said upper end surface 10 of the said wood main body 3. As shown in FIG. In the present embodiment, the windbreak concave portion 47 is formed by cutting the upper end surface 10 of the wood body 3, and has a diameter of about 70 mm centered on the center of the upper end surface 10 and a depth of about 10 mm. Are formed as circular recesses. The upper ends 49 and 50 of the first inner vertical combustion hole 11 a and the second inner vertical combustion hole 11 b are opened at the bottom surface 51 of the windshield recess 47.

  However, when the combustion wood 1 having such a configuration is used, the combustion gas generated in the first and second inner vertical combustion holes 11a and 11b due to combustion in the horizontal combustion hole 9 is accumulated in the windshield recess 47, and The concentration of the combustion gas in the windshield recess 47 is increased. The windbreak concave portion 47 exhibits a windbreak function regardless of which direction the wind blows, and it is difficult for the combustion gas to scatter even if there is some crosswind. Therefore, there is an advantage that the combustion gas in the windshield recess 47 is easily ignited, and flames of the combustion gas are easily gathered together and are not easily extinguished by the cross wind. Therefore, combustion of the combustion gas generated in the inner vertical combustion hole 11 can be promoted.

  FIG. 9 shows another embodiment of the combustion wood 1 according to the present invention, and the entire outer surface 6 of the wood body 3 is coated metal except for the open end 35 of the lateral combustion hole 9. It is covered with a piece 52.

  In the present embodiment, the wood main body 3 has the same configuration as that shown in the first embodiment, for example, and is formed in a square column shape having a square shape in the plan view and an axis line in the vertical direction. The covering metal piece 52 is constituted by a thin metal plate having heat resistance. For example, a thin stainless steel plate 53 is used, and the stainless steel plate 53 is provided with a fold 56 at a portion corresponding to the corner portion 55 viewed in the circumferential direction of the wood body 3.

  The stainless steel plate 53 is bent in the circumferential direction so that the fold line 56 is aligned with the corner portion 55 and the edge portions 57 and 57 at both ends are overlapped with each other. The entire side surface 6 is covered. At this time, the upper portion 59 of the stainless steel plate 53 protrudes about 10 mm above the upper end surface 10. At this time, the stainless plate 53 does not block the open end 35 of the lateral combustion hole 9.

  For this purpose, in FIG. 9, a portion of the stainless steel plate 53 facing the opening end 35 is cut out in a circular shape or the like. At that time, as shown in FIG. 9B, the hollowing is preferably performed while leaving a part of the opening / closing connecting portion 60. If it does in this way, the cover piece 61 which can be opened and closed by this opening-and-closing connection part 60 can be formed by this cutout. However, by opening and closing the lid piece 61 as required, the amount of air supplied into the lateral combustion hole 9 can be adjusted, and thereby the heating power can be adjusted. When the stainless steel plate 53 is completely cut out at a portion facing the opening end 35, the opening end 35 may be opened and closed with a sliding lid piece.

  In the present embodiment, the upper portion 59 of the stainless steel plate 53 is protruded by about 10 mm above the upper end surface 10, so that it is formed inside the upper portion 59 in the same manner as the windbreak concave portion 47 by the depression in the second embodiment. A windshield recess 47 is provided which can function in the same manner. When the windshield recess 47 is configured in this way, the wood main body 3 is not shaved as in the case where the windshield recess 47 is configured by recessing the upper end surface 10, so that the burning time of the burning wood 1 is increased accordingly. There is an advantage that can be extended.

  The covering metal piece 52 is formed of a steel square tube-shaped storage cylinder whose axis is the vertical direction, and the wood main body 3 is accommodated in the square tube-shaped storage cylinder so that The entire side surface 6 may be covered with the covering metal piece 52 except for the opening end 35 of the lateral combustion hole 9.

  Thus, when using a square tube-shaped container made of steel that is excellent in strength, the upper portion is cut out, for example, leaving four corner portions, so that a strong support protruding portion that protrudes upward is formed. It can be formed, and the support protrusion can function as a support for supporting a pot, rice bowl, kettle or the like from below.

  In this way, the entire outer surface 6 of the wood body 3 is covered with the covering metal piece 52 except for the opening end 35 of the lateral combustion hole 9, thereby suppressing the release of heat on the outer surface 6. it can. Therefore, almost all the heat can be released upward, and a strong heating power upward can be obtained. Therefore, the wood for combustion 1 is suitable for use for cooking, for example. In addition, by covering the entire outer surface 6 of the wood body 3 with the coated metal piece 52 in this manner, the inner part surrounded by the coated metal piece 52 is ignited and the inner part is carbonized. When this occurs, the carbonized portion is surrounded by the coated metal piece 52. Therefore, even if the wind is strong, it is possible to prevent sparks from being scattered from the carbonized portion.

  The present invention is by no means limited to those shown in the above-described embodiments, and it goes without saying that various design changes can be made within the scope of the claims. One example is as follows.

(1) The burning wood 1 according to the present invention is opened at the upper end surface 10 of the wood body 3 at the central portion or the peripheral portion of the wood body 3 and extends in the vertical direction to the horizontal combustion hole 9. A plurality of inner vertical combustion holes 11 communicating with each other at the lower end are provided, and the present invention is not limited to those provided with a plurality of inner vertical combustion holes 11 as shown in the above embodiment. Even if the number of the inner vertical combustion holes 11 is two, for example, unlike the combustion wood according to Patent Document 1, the area of the inner peripheral surface of these inner vertical combustion holes 11 can be increased. In addition, since the combustion gas can be generated also from the wood portion 39 existing between the adjacent inner vertical combustion holes 11, 11, the amount of combustion gas generated from the inner vertical combustion hole 11 is equal to one vertical hole d. When compared with the generation amount of combustion gas from the vertical hole d in the wood for combustion according to Patent Document 1, the generation amount can be increased. Thereby, it becomes possible to perform the combustion in the initial stage of the wood 1 for combustion better.

(2) As described above, the inner vertical combustion hole 11 (the first inner vertical combustion hole 11a) is provided in the vertical direction in the central portion of the wood body 3, and the inner vertical combustion hole is formed in the peripheral portion thereof. When the inner vertical combustion holes 11 (second inner vertical combustion holes 11b) are provided at an equiangular pitch on substantially the same circumference centering on 11, the inner vertical combustion holes provided on the same circumference 11 is preferably set to 4 or more. However, although depending on the size of the wood main body 3, if the number is increased to about 10, for example, the distance between the adjacent inner vertical combustion holes 11 and 11 decreases, so that the thickness of the wall portion 23 existing therebetween is reduced. This is not preferable because the thickness is reduced and the amount of combustion gas generated in the wall portion 23 is reduced.

(3) When the outer vertical combustion hole 13 is provided on the outer edge side of the wood body 3, the outer vertical combustion hole 13 does not communicate with the horizontal combustion hole 9. As an example, in the embodiment, the lower end 15 of the outer vertical combustion hole 13 is positioned 10 to 30 mm above the upper end of the horizontal combustion hole 9. Therefore, when the outer vertical combustion hole 13 can be disposed at a certain distance from the horizontal combustion hole 9, the lower end 15 of the outer vertical combustion hole 13 is positioned at a side portion of the horizontal combustion hole 9. Alternatively, the outer vertical combustion hole 13 may be disposed so as to extend downward at a side portion of the horizontal combustion hole 9.

(4) The cross-sectional shape of the wood body 3 is not limited. The cross-sectional shape may be a rectangular shape or a circular shape in addition to the square shape described above. FIG. 10 shows a case where the cross-sectional shape is rectangular, and FIG. 11 shows a case where it is circular. Moreover, this timber main body 3 can also be comprised using a thinning material other than using the said end material, and a log may be sufficient as it. Therefore, the present invention can contribute to the effective use of industrial waste.

(5) In the case where the wood main body 3 has a columnar shape, when the outer vertical combustion hole 13 is provided in the wood main body 3, the outer vertical combustion hole 13 is disposed on the outer peripheral side of the columnar wood main body 3. For example, 4-10 can be provided at a required interval. In FIG. 11, five outer vertical combustion holes 13 are provided.

(6) When the outer vertical combustion hole 13 is provided in the wood main body 3, a plurality of the outer vertical combustion holes 13 may be provided in the outer edge side portion 63 of the wood main body 3 toward the center of the upper end surface 10 of the wood main body 3. Good. FIG. 12 shows that when the wood body 3 has a square shape in plan view and the axis 2 is in the vertical direction, two pieces are provided at the four corner portions 27, 27, 27, 27 of the wood body 3. An example of the case where the outer vertical combustion hole 13 is provided is shown, and on the diagonal line of the upper end surface 10, two large and small outer vertical combustion holes 13 in which the diameter of the outer hole is large and the diameter of the inner hole is small are shown. , 13 are shown.

(7) The cross-sectional shape and the size of the inner vertical combustion hole 11 and the outer vertical combustion hole 13 are required in consideration of the material of the wood constituting the wood body 3, the length of the wood body 3, and the like. It can be set. FIG. 13 shows a case where the inner vertical combustion hole 11 and the outer vertical combustion hole 13 are configured as circular holes when the same wood body 3 as described above is used, and the diameters are both set to about 10 mm. Show.

(8) FIG. 14 shows a case where the diameter of the first inner vertical combustion hole 11a is set to be relatively large and the diameter of the second inner vertical combustion hole 11b is set to be small, In this example, the diameter of the first inner vertical combustion hole 11a is set to about 13 mm, for example, and the diameter of the second inner vertical combustion hole 11b is set to about 10 mm, for example. In FIG. 14, the diameter of the outer vertical combustion hole 13 is also set to about 10 mm.

(9) FIG. 15 shows the case where the wood body 3 is formed in a square column shape having a square shape in plan view and the axis 2 is in the vertical direction, and the length of one side of the square shape is relatively large as about 120 mm. FIG. 4 shows a case where the diameters of the inner vertical combustion hole 11 and the outer vertical combustion hole 13 are set to be relatively large, such as about 15 mm.

(10) As long as the windbreak concave portion 47 exhibits the windbreak function shown in Example 2, the use environment of the wood for combustion 1 according to the present invention is considered, and the depth thereof is, for example, 10 to 30 mm. It can be set as required in the range.

(11) The ignition of the combustion gas generated at the upper end surface 10 is not only ignited by using the igniting material 32, but also when ignited in a windless state or indoors, by igniting with a lighter without using the igniting material 32. Also good.

(12) The combustion wood 1 according to the present invention is not only used for the above purpose but also can be stored safely because it is made of wood, has long-lasting change, and can be configured compactly, so it has excellent handling properties. Suitable for storage in stockpiling warehouses. For this reason, the wood for combustion 1 is suitable for use as a reserve fuel in the event of a disaster. At the time of this storage, the burning wood 1 is preferably subjected to antiseptic treatment and insect repellent treatment.

(13) Further, in FIG. 16, when the wood body 3 is formed in a square column shape having a square shape in a plan view and the axis 2 in the vertical direction, as described above, In view of the fact that the outer side surface 6a where the edge portion 43 of the opening end 35 exists burns out earlier than the outer side surface 6b opposed to the front and rear thereof, the outer side surface 6a side where the opening end 35 side of the wood body 3 exists. 65 (the portion between the outer surface 6a and the second inner vertical combustion hole 11b close to the outer surface 6a) 65, and the portion on the outer surface 6b side (the outer surface 6b close to the outer surface 6b) 2 is a case where it is formed thicker than the inner vertical combustion hole 11b. In this case, the axis of the first inner vertical combustion hole 11a is shifted to the opposite side in accordance with this.

(14) The lower end 36 of the inner vertical combustion hole 11 only needs to communicate with the horizontal combustion hole 9, and FIG. 16 arranges the second inner combustion hole 11b on substantially the same circumference. In the case, it shows another aspect when arranged at each vertex of a regular octagon. In the drawing, two second inner vertical combustion holes 11 b are arranged along the axis of the horizontal combustion hole 9 on both the left and right sides of the horizontal combustion hole 9.

(15) In FIGS. 10 to 15, for example, as shown by a one-dot chain line in FIG. 16, in the same configuration as described above, a central portion of the upper end surface 10 of the wood body 3 is recessed to provide the windbreak concave portion 47. Also good.

(16) If the ignition material 32 placed on the upper end surface 10 of the wood body 3 can ignite the combustion gas discharged from the upper end surface 10 in the initial stage of combustion, its size and arrangement The state does not matter.

(17) For example, as shown in FIG. 9, the entire outer side surface 6 of the wood body 3 is covered with the covering metal piece 52 except for the opening end 35 of the lateral combustion hole 9, whereby the windshield recess 47 is formed. In the case of being configured, when providing a projecting portion projecting inward at the upper end portion of the windshield concave portion 47, the upper surface portion of the projecting portion can be used as a placement portion for the ignition material 32. When the igniting material 32 is arranged in this manner, the igniting material 32 is lifted from the upper end surface 10. Thus, the aspect which arrange | positions the ignition material 32 is also an example of the aspect which has arrange | positioned the ignition material to the said upper end surface 10 side.

(18) When placing the ignition material 32 on the upper end surface 10, in order to make it easier to place the ignition material 32, a fitting recess for fitting the lower part of the ignition material 32 may be provided. . In addition, a fitting groove for fitting the ignition material 32 may be provided in the edge portion of the upper end surface 10. The aspect in which the ignition material 32 is mounted in the insertion recess or the insertion groove is also an example of the aspect in which the ignition material 32 is disposed on the upper end surface 10 side.

DESCRIPTION OF SYMBOLS 1 Wood for combustion 2 Axis 3 Wood main body 5 Lower part 6 Outer side surface 7 Axis 9 Horizontal combustion hole 10 Upper end surface 11 Inner vertical combustion hole 12 Outer edge side 13 Outer vertical combustion hole 15 Lower end 16 Upper end 22 Peripheral portion 23 Wall portion 25 Wall portion 26 Lower end 32 Ignition material 37 Inner peripheral surface 39 Wood part 41 Wood part 42 Center part 47 Windbreak recessed part 52 Coated metal piece 55 Corner part 56 Crease

Claims (7)

In the lower part of the wood main body having a columnar shape whose axis is the vertical direction, a blind horizontal combustion hole having an opening in the outer surface of the wood main body and having the horizontal axis is provided.
Further, a plurality of inner vertical combustion holes that open at the upper end surface of the wood main body and extend in the vertical direction and communicate with the lower combustion holes at the lower end are provided in the central portion or the peripheral portion of the wood main body. And

An outer vertical combustion hole that opens at the upper end surface of the wood main body and extends in the vertical direction is provided on the outer edge side of the wood main body, and the outer vertical combustion hole does not communicate with the horizontal combustion hole. Wood for combustion characterized by. The wood main body is formed in a prismatic shape having a square shape in plan view, and the outer vertical combustion holes open at four corners of the upper end surface of the wood main body and extend in the vertical direction. The wood for combustion according to claim 1. The wood for combustion according to claim 1 or 2, wherein the entire outer surface of the wood body is covered with a covering metal piece except for the opening end of the horizontal combustion hole. 4. The wood for combustion according to claim 3, wherein an upper portion of the covering metal piece protrudes above the upper end surface and a windshield recess is provided inside the upper portion. 5. The combustion wood according to claim 1, and an ignition material that is disposed on the upper end surface side of the wood main body of the combustion wood and assists combustion at the upper end surface. A set of combustion wood and igniting material. 2. The combustion wood according to claim 1, wherein the wood main body is configured as a prismatic prism having a square shape in plan view, and an outer surface of the wood main body of the combustion wood. A covering metal piece that can be entirely covered, and the covering metal piece is formed of a heat-resistant metal plate that can be bent, and the metal plate includes a corner of the wood body as viewed in the circumferential direction. A set of combustion wood and coated metal pieces, wherein a crease is provided at a portion corresponding to the part. In the lower part of the wood body having a columnar shape whose axis is the vertical direction, a blind horizontal combustion hole having an opening in the outer surface of the wood body and whose axis is in the horizontal direction is provided. The peripheral portion is provided with a plurality of inner vertical combustion holes that open at the upper end surface of the wood body and extend in the vertical direction and communicate with the horizontal combustion holes at the lower end. An ignition material is arranged on the side of the horizontal combustion hole and the upper end surface, and the hot air generated by the combustion of the ignition material arranged in the horizontal combustion hole is raised in each of the inner vertical combustion holes. Heating the wood portion existing between the matching inner vertical combustion holes from the opposite side, causing the combustion gas generated from the wood portion to flow into each of the inner vertical combustion holes to be raised by the inner vertical combustion holes, the upper end surface And exhaust the exhausted combustion gas to the upper end surface side. Combustion method of burning wood, characterized in that by the ignition material is location in the combustion state, is burned at a position slightly floating from the upper end face.

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