Wood-burning grills and how to use them

Abstract

The amount of air supplied to the firewood or charcoal can be adjusted uniformly, so that the amount of smoke and soot generated is almost zero, reducing the adhesion of soot to the cooker and the impact on the human body and the environment. It also makes smoking possible. [Solution] The firewood grill 1 comprises a combustion vessel 2 including a bottom wall 3 on which firewood or charcoal is placed and a cylindrical side wall 4, with air holes 7, 8 in the bottom wall 3 and the side wall 4, a cylindrical cover 10 which covers the side wall 4 with a gap therebetween, an annular opening 13 which allows air to flow into the cover 10 from around the lower end or upper end of the cover 10, and an air adjustment mechanism 20 which adjusts the amount of air flowing in by changing the height of the annular opening 13.

Description

[Technical field]

[0001] The present invention relates to a wood grill, which is a cooking appliance that burns wood or charcoal. [Background technology]

[0002] As a cooking utensil that can use firewood or charcoal as fuel, for example, Patent Document 1 describes a simple stove consisting of a truncated pyramidal side plate with a fire opening and a bottom plate for placing firewood with many ventilation holes, with the side plate having many ventilation holes below where the bottom plate is attached. It is said that firewood is placed on the bottom plate and burned, and that sufficient outside air is supplied into the stove body through the many ventilation holes in the side plate, allowing the firewood to burn effectively. However, there is no description of adjusting the amount of air supplied to the firewood.

[0003] Therefore, when cooking by burning firewood, depending on the amount of air supplied, a large amount of smoke and soot can be generated, which can cause problems such as soot adhering to cooking equipment, adverse effects on the human body, and environmental pollution.

[0004] Patent Document 2 describes a combustion appliance for cooking, etc., which includes a cylindrical main body with a bottom, a combustion chamber tube located above the bottom of the main body and fixed to the inside with a gap between it and the wall of the main body, and a bottom net supported on the inside lower part of the combustion chamber tube, and the side wall of the main body is provided with an air intake port and a door that can be opened and closed freely, at a position lower than the bottom net. Firewood is placed on the bottom net for burning, and by adjusting the opening and closing of the air intake port, the amount of oxygen, which differs depending on the type of fuel, can be adjusted.

[0005] However, the mechanism that adjusts the opening and closing amount of the air intake located in one place on the side wall by moving a door had problems such as the fact that the amount of air supplied to the firewood could only be adjusted from the direction of the air intake, and that the airflow was biased, making it difficult to evenly adjust the amount of air supplied to the firewood on the bottom net. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Utility Model Registration No. 3177784 [Patent Document 2] JP 2018-40559 A Summary of the Invention [Problem to be solved by the invention]

[0007] Therefore, the object of the present invention is to uniformly adjust the amount of air supplied to the firewood or charcoal, thereby enabling adjustment so that almost no smoke or soot is generated, thereby reducing the adhesion of soot to the cooking device and the impact on the human body and the environment. It is also to enable the adjustment of the amount of air supplied to the firewood or charcoal from any direction of the firewood grill. Furthermore, it is also to enable smoking by using a specified lid. [Means for solving the problem]

[0008] The inventor of the present invention experienced failure during the process of developing a means to solve the above problems, and realized that improvements along the same lines as conventional methods were not sufficient to reduce both smoke and soot. As a result, the inventor investigated various means that were completely different from conventional methods, and arrived at the following invention.

[0009] [1] A combustion vessel including a bottom wall for placing firewood or charcoal and a cylindrical side wall, the bottom wall and the side wall having air holes; A cylindrical cover that covers the side wall with a gap therebetween; an annular opening for allowing air to flow into the cover from a lower end periphery or an upper end periphery of the cover; an air adjustment mechanism that adjusts the amount of air flowing in by changing the height of the annular opening; Equipped with a wood-burning grill.

[0010] [2] The wood grill described in [1], wherein the annular opening is located between the lower end of the cover and a tray facing the lower end from below.

[0011] [3] The wood grill described in [1], wherein the annular opening is located between the upper end of the cover and the enlarged portion at the upper part of the side wall.

[0012] [4] A firewood grill described in any one of [1] to [3], wherein the cover has a ring-shaped wall curved inward from the lower end.

[0013] [5] A firewood grill described in any one of [1] to [4], wherein the air adjustment mechanism is a screw-type mechanism that changes the height of the annular mouth by rotating a screw together with the combustion vessel.

[0014] [6] A firewood grill as described in [5], which is provided with a manual rotation jig that can be detachably engaged with the combustion vessel.

[0015] [7] A firewood grill described in any one of [1] to [6], which is provided with a perforated lid to cover the combustion container.

[0016] [8] A combustion vessel including a bottom wall for placing firewood or charcoal and a cylindrical side wall, the bottom wall and the side wall having air holes; A cylindrical cover that covers the side wall with a gap therebetween; an annular opening for allowing air to flow into the cover from a lower end periphery or an upper end periphery of the cover; an air adjustment mechanism that adjusts the amount of air flowing in by changing the height of the annular opening; Use a wood-burning grill equipped with A method of using a firewood grill in which the amount of air supplied to the combustion vessel from both the air holes in the bottom wall and the side wall is simultaneously adjusted by changing the height of the annular opening with an air adjustment mechanism to adjust the amount of air flowing in.

[0017] [9] A method of using a firewood grill as described in [8], in which a hot fire is created by adjusting the amount of air supplied.

[0018]

[10] A method of using a firewood grill as described in [8], in which smoke is generated from firewood by covering the combustion container with a perforated lid. Effect of the Invention

[0019] According to the present invention, the amount of air supplied to the firewood or charcoal can be adjusted uniformly, and it is also possible to adjust the amount of air supplied to the firewood or charcoal so that almost no smoke or soot is generated, thereby reducing the adhesion of soot to the cooking device and the impact on the human body and the environment. In addition, the air adjustment mechanism is a screw type mechanism, so that the amount of air supplied to the firewood or charcoal can be adjusted from any direction of the firewood grill. Furthermore, smoking is also possible with a specified lid. [Brief description of the drawings]

[0020] [Figure 1] FIG. 1 is a perspective view of the firewood grill of the first embodiment. [Diagram 2] FIG. 2 shows the combustion chamber of the wood grill, where (a) is a perspective view, (b) is a plan view, and (c) is a vertical cross-sectional view. [Diagram 3] FIG. 3 shows the cover of the firewood grill, where (a) is a perspective view, (b) is a plan view, and (c) is a vertical cross-sectional view. [Figure 4] FIG. 4 shows the combustion vessel and cover of the firewood grill, where (a) is a perspective view, (b) is a cross-sectional view, and (c) is a vertical cross-sectional view. [Diagram 5] FIG. 5 shows the tray of the firewood grill, where (a) is a perspective view, (b) is a plan view, and (c) is a vertical cross-sectional view. [Figure 6] FIG. 6 is a perspective view of the firewood grill in use. [Figure 7] FIG. 7 shows the same firewood grill in use, where (a) is a vertical cross-sectional view when the amount of air inflow is increased, and (b) is a vertical cross-sectional view when the amount of air inflow is decreased. [Figure 8] FIG. 8 shows the same firewood grill in use for smoking, where (a) is an exploded perspective view of the lid used, and (b) is a perspective view. [Figure 9] FIG. 9 is a vertical cross-sectional view of the firewood grill during smoking. [Figure 10] FIG. 10 shows the wood grill of Example 2 in use, where (a) is a vertical cross-sectional view when the amount of air inflow is increased, and (b) is a vertical cross-sectional view when the amount of air inflow is decreased. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] 1. Combustion vessel The material of the combustion vessel is not particularly limited, but examples thereof include metal, porcelain, ceramics, etc. The metal is preferably stainless steel. The combustion vessel is preferably in the form of a cylindrical cylinder with a bottom, but may be in the form of a rectangular cylinder with a bottom. The dimensions of the combustion vessel are not particularly limited, but the outer diameter is preferably 80 to 300 mm, and the height is preferably 30 to 150 mm. The upper portion of the combustion vessel is preferably an expanded diameter portion. The shape of the air hole is not particularly limited, but examples include a round hole, a square hole, a slit hole, and the like.

[0022] 2. Cover The material of the cover is not particularly limited, but examples thereof include metal, porcelain, ceramics, etc. The metal is preferably stainless steel. The tubular shape of the cover is preferably cylindrical, but may be a rectangular tube. The dimensions of the cover are not particularly limited, but the diameter is preferably such that the gap between the inner surface of the cover and the outer surface of the combustion vessel (side wall) is 5 to 20 mm. The cover is preferably provided with a ring-shaped wall bent inward from the bottom end of the cylinder, but may be simply cylindrical. The inside diameter of the ring-shaped wall is not particularly limited, but is preferably within ±10 mm of the outside diameter of the combustion vessel.

[0023] 3. Saucer The material of the tray is not particularly limited, but examples include metal, porcelain, ceramics, etc. The metal is preferably stainless steel. The dimensions of the tray are not particularly limited as long as they are larger than the outer diameter of the cover.

[0024] 4.Air conditioning mechanism The structure of the air conditioning mechanism is not particularly limited, but the screw mechanism is preferred.

[0025] 4. The rotating jig is not particularly limited as long as it can be detachably engaged with the combustion vessel, but it is preferable that it has a metal rod so that it can be operated from a distance from the combustion vessel, and it is further preferable that it has a wooden handle or the like.

[0026] 5. Perforated lid The material of the perforated lid is not particularly limited, but examples thereof include metal, porcelain, ceramics, etc. The metal is preferably stainless steel. Since the perforated lid is exposed to high heat, it is preferable that the thickness of the perforated lid is 3 mm or more, and the perforated lid may be one piece or multiple pieces stacked. The shape of the hole is not particularly limited, but examples include a round hole, a square hole, a slit hole, and the like. EXAMPLES

[0027] The present invention will be described with reference to the drawings. Note that the structures, materials, values, shapes and dimensions described in the embodiments are merely examples and may be modified as appropriate without departing from the scope of the invention.

[0028] [Example 1] The firewood grill 1 of the first embodiment shown in Figs. A combustion vessel 2 including a bottom wall 3 for placing firewood or charcoal and a cylindrical side wall 4, the bottom wall 3 and the side wall 4 having a plurality of air holes 7, 8; A cylindrical cover 10 that covers the side wall 4 with a gap therebetween; A tray 14 facing the lower end of the cover 10 from below; A tray stand 16 on which the tray 14 is placed; an annular opening 13 for allowing air to flow into the cover 10 from around the lower end of the cover 10; an air adjustment mechanism 20 for adjusting the amount of air flowing in by changing the height of the annular opening 13; A rotation jig 25 that is detachably engaged with the combustion vessel 2 and manually rotates the combustion vessel 2; It is provided with a perforated lid 30 that is placed over the combustion vessel 2. The annular opening 13 is located between the lower end of the cover 10 and the tray.

[0029] The combustion vessel 2 is made of stainless steel, and as shown in Fig. 2 etc., is composed of a bottom wall 3 having an outer diameter of 110 mm and a side wall 4 having a height of 45 mm, with the upper part of the side wall 4 being an expanded diameter section 5 which expands to an outer diameter of 135 mm. The expanded diameter section 5 is not limited to being trumpet-shaped as in the illustrated example, and may be, for example, a flat flange-shaped section. An engagement ring 6 is attached to a part of the expanded diameter section 5. A through hole is formed in the center of the bottom wall 3. A plurality of air holes 7 are formed through the bottom wall 3 over almost the entire area. As shown in Fig. 2(b), the air holes 7 are arranged in a predetermined array with diameters of 4 mm and 2 mm. A plurality of air holes 8 are also formed through the side wall 4 over almost the entire area. As shown in Fig. 2(c), these air holes 8 are arranged in a predetermined array with diameters of 2 mm and 1 mm.

[0030] The cover 10 is made of stainless steel and, as shown in Fig. 3 etc., is cylindrical with an outer diameter of 130 mm and a height of 50 mm, and further includes a ring-shaped wall 11 bent inward from the lower end of the cylinder. The upper end of the cover 10 abuts against the lower surface of the expanded diameter portion 5 of the combustion vessel 2. The inside diameter of the ring-shaped wall 11 is 110 mm.

[0031] As shown in Fig. 4 etc., the combustion vessel 2 and the cover 10 are integrated with four fastening bolts 12. Due to this integration, the gap between the inner surface of the cover 10 and the outer surface of the combustion vessel 2 (side wall 4) is about 10 mm, and the bottom wall 3 of the combustion vessel 2 is about 5 mm higher than the lower end of the cover 10. The upper end of the cover 10 and the lower surface of the enlarged diameter portion 5 of the combustion vessel 2 are easily brought into close contact with each other due to the above-mentioned contact, so that the gap below is closed and secured.

[0032] The tray 14 is made of stainless steel and includes a flat disk portion with a diameter of 130 mm or more, as shown in Fig. 5 etc. A metal thick plate 15 is fixed under the tray 14. A through hole is formed in the center of the tray 14, and a female screw hole communicating with the through hole is tapped in the center of the thick plate 15.

[0033] The tray stand 16 is made of stainless steel, and as shown in Fig. 1, consists of three concentric rings on which the tray 14 is placed, and three legs. The innermost ring has a larger diameter than the thick plate 15, allowing the thick plate 15 to escape.

[0034] As shown in Figures 6 and 7, the air adjustment mechanism 20 is a screw-type mechanism that rotates the combustion vessel 2 and the cover 10 and changes the height of the annular opening 13 by utilizing a screw provided between the center of the bottom wall 3 and the center of the tray 14. More specifically, the adjustment bolt 21 is passed through the through hole in the bottom wall 3 from above, and its head is fastened and fixed to the bottom wall 3 with a nut 22, so that it rotates together with the bottom wall 3. The middle part of the adjustment bolt 21 is passed through the through hole in the tray 14 from above, and is screwed into the female threaded hole in the thick plate 15. The lower part of the adjustment bolt 21 extends further downward after leaving the female threaded hole, and a retaining nut 23 is screwed onto it. The retaining nut 23 is a double nut to prevent it from screwing.

[0035] 6, the rotation jig 25 includes a metal rod 26 and a handle 27 made of wood or the like. The rod 26 is 200 to 300 mm long, with a bent tip so as to be easily engaged with the engagement ring 6, and a gently curved midway point. Then, by gripping the handle 27 of the rotating jig 25 and engaging the tip of the rod 26 with the engaging ring 6, the combustion vessel 2 and cover 10 are manually rotated counterclockwise, as shown in Figure 7(a), the adjustment bolt 21 also rotates and screws upward into the female screw hole, causing the combustion vessel 2 and cover 10 to rise and increasing the height of the annular opening 13 (the gap between the bottom end of the cover 10 and the receiver tray 14). The limit of the rise is when the retaining nut 23 hits the thick plate 15, preventing the bolt from falling out. In addition, when the combustion vessel 2 and cover 10 are manually rotated clockwise, as shown in Figure 7(b), the adjustment bolt 21 also rotates and screws downward into the female threaded hole, causing the combustion vessel 2 and cover 10 to descend and reducing the height of the annular opening 13.

[0036] As shown in Figure 8 etc., the perforated lid 30 is composed of a 1.5 mm thick stainless steel lid body 31 sandwiched between upper and lower reinforcing plates 32 made of stainless steel and each 3 mm thick. A plurality of hot air passing holes 33 are formed through the perforated lid 30. A plurality of elongated holes 34 communicating with the hot air passing holes 33 are formed through the reinforcing plate 32, and the elongated holes 34 reduce the weight of the reinforcing plate 32 appropriately. By sandwiching the lid body 31 between the reinforcing plates 32, deformation of the lid due to heat can be prevented, and the weight of the lid is increased, improving adhesion to the combustion vessel 2.

[0037] The firewood grill configured as above can be used, for example, as follows.

[0038] [1] Use with combustion control As shown in Figures 6 and 7, a small amount of firewood or charcoal is placed in the combustion vessel 2. To suppress the rise of the flame, the firewood or charcoal is placed sideways on the bottom wall 3. The firewood or charcoal is ignited, and an appropriate amount of firewood or charcoal is added and burned. At this time, air is supplied to the firewood or charcoal from the annular opening 13 through the air hole 7 in the bottom wall 3 and the air hole 8 in the side wall 4. A wire mesh 36 is set above the combustion vessel 2, a cooking vessel 37 is placed on the wire mesh 36, and food is placed in the cooking vessel 37 to cook.

[0039] As shown in Fig. 7(a), when the height of the annular opening 13 is large, the amount of air flowing in is large, causing the flame to rise high and generating a large amount of smoke and soot. Although cooking can be done in this state, it is preferable to use it in a state close to the next embers.

[0040] As shown in Fig. 7(b), by rotating the combustion vessel 2 and the cover 10 clockwise as described above and making the height of the annular opening 13 extremely small, the amount of air flowing in is reduced, creating a state close to a hot ember, i.e., a small flame rises and the overall combustion feels calm, and almost no smoke or soot is generated. Cooking in this state reduces the adhesion of soot to the cooker 37 and the impact on the human body and the environment.

[0041] Here, the following effects are obtained. a) By adjusting the height of the annular opening 13, the airflow is not biased around the entire circumference of the combustion vessel 2, so the amount of air supplied to the firewood or charcoal can be adjusted uniformly. a) By adjusting the height of the annular opening 13, the amount of air supplied to the firewood or charcoal from the air holes 7, 8 in both the bottom wall 3 and the side wall 4 can be adjusted simultaneously. C) It is also possible to adjust the temperature so that almost no smoke or soot is produced, thereby reducing the buildup of soot on the cooking appliance 37 and the impact on the human body and the environment. e) Because the air adjustment mechanism 20 is a screw-type mechanism, the amount of air supplied to the firewood or charcoal can be adjusted from any direction of the firewood grill. e) Since the air adjustment mechanism 20 is a screw type mechanism, the height of the annular opening 13 can be adjusted steplessly, and therefore the amount of air flowing in can be finely adjusted steplessly and can even be reduced to the minimum.

[0042] [2] Use in a smoking state As shown in Figures 8 and 9, if the perforated lid 30 is placed on the combustion container 2 while the firewood is burning, the combustion is restricted (the size of the flame becomes smaller, but the fire inside does not go out completely), forcing incomplete combustion to occur, causing smoke to be produced from the firewood through thermal decomposition, and allowing food ingredients (meat, eggs, cheese, fish paste, etc.) on the wire mesh 36 to be smoked.

[0043] Here, the following effects are obtained. (F) Even if the perforated lid 30 is placed over the pot, the fire inside is not completely extinguished and is maintained. The flames inside can be seen through the perforated lid 30. (k) Any type of firewood can be smoked, so there is no need to use smoke wood or smoke chips (although you may use them). (k) By simply using or not using the perforated lid 30, it is possible to quickly switch between the smoking state and the state [1].

[0044] This firewood grill can also be used as a bonfire stand.

[0045] [Example 2] The firewood grill 1 of Example 2 shown in Figure 10 differs from Example 1 only in that the lower end of the cover 10 is fixed to a tray 14 and there is an annular opening 13 between the upper end of the cover 10 and the enlarged diameter portion 5 at the upper part of the side wall 4, which allows air to flow into the cover 10 from around the upper end of the cover 10; otherwise, it is the same as Example 1.

[0046] When the combustion vessel 2 and cover 10 are manually rotated counterclockwise, as shown in Figure 10(a), the adjustment bolt 21 also rotates and screws upward into the female threaded hole, causing the combustion vessel 2 and cover 10 to rise and increasing the height of the annular mouth 13 (the gap between the upper end of the cover 10 and the enlarged diameter portion 5). In addition, when the combustion vessel 2 and cover 10 are manually rotated clockwise, as shown in Figure 10(b), the adjustment bolt 21 also rotates and screws downward into the female threaded hole, causing the combustion vessel 2 and cover 10 to descend and reducing the height of the annular opening 13. Therefore, the firewood grill 1 of the second embodiment can be used in the same way as the first embodiment, and the same effects as those of the first embodiment can be obtained.

[0047] The present invention is not limited to the above-described embodiment, and can be embodied by making appropriate modifications without departing from the gist of the invention. [Explanation of symbols]

[0048] 1. Wood-burning grill 2 Combustion vessel 3 Bottom wall 4 side wall 5 Expanded diameter part 6 Engagement ring 7 Air Holes 8 Air Holes 10. Cover 11 Ring Wall 12 Connecting bolt 13 Circular Mouth 14 Saucer 15 Plank 16 Tray stand 20 Air conditioning mechanism 21 Adjustment bolt 22 Nut 23 Locking nut 25 Rotating Jig 26 Rod 27 Handle 30 Perforated Lid 31 Lid body 32 Reinforcement plate 33 Hot air passage hole 34 Slot 36 Wire Mesh 37 Cooker

Claims

1. a combustion vessel including a bottom wall for placing firewood or charcoal thereon and a cylindrical side wall, the bottom wall and the side wall having air holes; a cylindrical cover that covers the side wall with a gap; an annular opening for allowing air to flow into the cover from a lower end periphery or an upper end periphery of the cover; an air adjustment mechanism that adjusts the amount of air flowing in by changing the height of the annular opening; Equipped with a wood-burning grill.

2. 2. The wood burning grill of claim 1, wherein the annular opening is located between a lower end of the cover and a tray facing the lower end from below.

3. 2. The wood burning grill of claim 1, wherein said annular opening is between the top end of said cover and an enlarged portion at the top of said side wall.

4. 2. The wood burning grill of claim 1, wherein the cover comprises a ring-shaped wall that curves inwardly from a lower end.

5. The wood grill of any one of claims 1 to 4, wherein the air adjustment mechanism is a screw-type mechanism that changes the height of the annular opening by rotating a screw together with the combustion vessel.

6. The wood burning grill of claim 5 further comprising a manual rotation tool for releasably engaging said combustion vessel.

7. The firewood grill according to any one of claims 1 to 4, further comprising a perforated lid for covering the combustion vessel.

8. a combustion vessel including a bottom wall for placing firewood or charcoal thereon and a cylindrical side wall, the bottom wall and the side wall having air holes; a cylindrical cover that covers the side wall with a gap; an annular opening for allowing air to flow into the cover from a lower end periphery or an upper end periphery of the cover; an air adjustment mechanism that adjusts the amount of air flowing in by changing the height of the annular opening; Use a wood-burning grill equipped with A method of using a firewood grill in which the amount of air supplied to the combustion vessel from both the air holes in the bottom wall and the side wall is simultaneously adjusted by changing the height of the annular opening with an air adjustment mechanism to adjust the amount of air flowing in.

9. 9. The method of claim 8, further comprising adjusting the amount of air supplied to create a hot fire.

10. 9. The method of claim 8, wherein the firewood is made to produce smoke by covering the combustion vessel with a perforated lid.

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