JP2021001727A - Combustor - Google Patents

Abstract

To solve a problem associated with a conventional rocket stove that high temperature combustion (near perfect combustion) cannot be achieved only by inducing combustion gas (by an induction force of a stack) into a combustion cylinder and letting it combust in the combustion cylinder, which rocket stove is distributed in a market place, with a plurality of patent applications filed therefor each claiming a different intended structure, with some of related inventions disclosing a rocket stove comprising a combustion chamber constituted of an opening openable/closable by a lid and of a suction port provided on the lower part thereof, into which chamber a combustion cylinder is vertically inserted to form a gap between the lower end opening of the combustion cylinder and the bottom face of the combustion chamber to let the gap induce combustion gas into the combustion cylinder, for the purpose of trying to attain complete combustion in the combustion cylinder.SOLUTION: A combustor according to the present invention for combusting firewood, comprising a combustor body equipped with a first suction port and an exhaust port, is provided with a combustion cylinder which is attached underneath the exhaust port and has a third opening or a suction port on its lower end disposed apart from the bottom face of the combustor body and a fourth opening disposed on the upper part of the combustion cylinder so that combustion gas taken thereinto from the third opening or the suction port by a suction force of a stack and lighter high-temperature combustion gas sucked from the fourth opening are mixed and combusted together by virtue of a natural phenomenon, and thereby can carry out secondary combustion (near perfect combustion).SELECTED DRAWING: Figure 1-1

Description

The present invention does not discriminate between undried wood, undried waste, etc., regardless of whether it is waste wood (waste wood) such as firewood, wood, thinned wood, grass, raw wood, or its dry state. The present invention relates to a combustion appliance capable of almost completely burning (referred to as complete combustion) in the combustion appliance.

The present invention is an improved version of the so-called "rocket stove", and an object of the present invention is to be able to burn regardless of the combustion material, to achieve combustion and combustion efficiency even with a small device, and to achieve combustion efficiency. It is to propose a small combustion appliance that does not hinder carrying.

Regarding "rocket stove" (hereinafter referred to as "combustor"), there are many applications with different purposes and structures, and they have been proposed to the market. Then, there is an invention described in Japanese Patent Application Laid-Open No. 2016-205795 that is related to the object of the present invention and the structure (Reference (1)). In the present invention, a combustion cylinder is hung in a combustion chamber consisting of an opening that opens and closes with a lid and an intake port provided at the bottom, and a gap is formed between the lower end opening of the combustion chamber and the bottom surface of the combustion chamber. The structure is such that the combustion gas is attracted to the combustion cylinder by using the gap, and complete combustion is achieved in this combustion cylinder. However, high-temperature combustion in the combustion cylinder cannot be achieved only by the mere attraction and the attraction force by the chimney, and it is considered that it may cause incomplete combustion.

Japanese Unexamined Patent Publication No. 2016-205795

According to the above document (1), the gap is mainly used for attracting the combustion gas to the combustion cylinder. Further, the complete combustion of the combustion gas in the combustion cylinder is considered to be a structure in which the complete combustion is achieved mainly by the attractive force by the chimney and the intake of new air from the intake port. However, this structure is not considered sufficient.

In view of the above, the present invention relates to a combustor for burning firewood and waste materials having a first intake port and an exhaust port which are second and first openings on the surface of the combustor body.
A combustion cylinder for secondary combustion is attached to the lower side of the exhaust port, and a third opening is formed at the lower end of the combustion cylinder, and the third opening forms a suction port separated from the bottom surface of the combustor body. The suction port takes in the combustion gas generated by the primary combustion of the combustion chamber of the combustion equipment, and the latest combustion gas taken in smoothly rises in the combustion cylinder by the suction force of the chimney, and this latest The combustion gas of No. 1 and the high temperature and lightly converted high temperature combustion gas that enters from the 4th opening formed in the combustion cylinder are combustion appliances that perform secondary combustion (complete combustion) by a natural phenomenon. It is a combustion appliance that is useful and easy to handle. It is a combustion appliance that is ideal for indoor use.

In view of the above, by providing claims 1 to 5, the present invention allows the flow of flame and / or combustion gas, unburned gas, exhaust, etc. in the combustion chamber and / or in the combustion cylinder. Efficient combustion, along with the provision of combustion equipment that enables efficient combustion while making it smooth, does not cause discomfort, and can burn everything such as firewood and waste materials through high-temperature combustion. , Providing combustion equipment with less heat shortage.

The invention of claim 1 is a combustor having a first intake port and an exhaust port which are second and first openings on the surface of the combustor body, and a combustion chamber for burning firewood and waste materials.
A short-tube combustion cylinder for secondary combustion is attached to the lower side of the exhaust port, and a third opening is formed between the lower end of the combustion cylinder and the bottom surface of the combustor body.
The combustion cylinder is formed with a fourth opening that opens directly into the combustion chamber.
The first opening has an octagonal shape and
A fifth opening is formed between the narrowing cylindrical portion of the combustion cylinder provided at the exhaust port or the chimney provided in the combustion cylinder and the first octagonal opening.
The combustion gas on the bottom surface of the combustor body is taken into the combustion cylinder from the third opening, and then the combustion gas sucked above the combustion cylinder and the high temperature taken from the fourth opening of the combustion cylinder. It is a combustion appliance characterized by secondary combustion with combustion gas (high-temperature combustion gas that merges with the combustion gas). A combustion cylinder for secondary combustion is attached to the underside of the exhaust port, and a combustion cylinder is attached. A third opening is formed at the lower end of the combustion cylinder, the third opening forms a suction port separated from the bottom surface of the combustor body, and the suction port forms a combustion gas generated by the primary combustion of the combustion chamber of the combustion appliance. Take in. Then, the latest combustion gas rises smoothly in the combustion cylinder by the action of the suction force of the chimney (chimney part), and at the same time, the combustion becomes hot and light from the fourth opening formed in the combustion cylinder. It is the provision of a combustion appliance that secondarily burns by a natural phenomenon with a gas (nearly complete combustion, that is, the production of smokeless combustion gas).

The feature of claim 1 is that combustion gas is generated by primary combustion in a combustion chamber, and this combustion gas is secondarily burned by merging with high-temperature combustion gas above a combustion cylinder to be substantially completely burned. Therefore, the combustion gas (combustion air) from the combustion cylinder and / or the chimney can be provided to the outside. In addition, the completely burned combustion gas is dissipated from the chimney. Through complete combustion, everything such as firewood and waste materials can be burned. Further, the above-mentioned flow can ensure a smooth flow of flame, unburned gas, exhaust gas, or the like.

The invention of claim 1 is further characterized in that a fifth opening is formed between a narrowing cylindrical portion of a combustion cylinder provided at an exhaust port or a chimney provided in the combustion cylinder and a first opening. Is.

Therefore, the feature of claim 1 is further characterized by the feature of claim 1, the combustion efficiency in the combustion chamber or the combustion cylinder, and the smooth combustion.

The invention of claim 2 is a combustor in which any surface is an upper surface of a combustor main body.

The features of claim 2 are the features of claim 1, that the outside air can be surely sucked into the combustor body (combustion chamber) and the exhaust gas can be exhausted, and that the combustor can be miniaturized. is there.

The invention of claim 3 is a combustion appliance in which a chimney is attached to an exhaust port.

The invention of claim 4 is a combustor in which the combustor body is a closed container.

According to the fifth aspect of the present invention, the combustor main body is an itto-kan, a pail can, a drum can, a can of a structure, or a combustor using a hole in the ground.

The feature of claim 5 is the feature of claim 1 and the feature that can contribute to effective utilization of waste products and cost reduction.

A bird's-eye view of a partially missing part showing the whole of the present invention, except that the chimney is connected to a part of the combustion cylinder (attached if necessary). In an example of FIG. 1-1, a bird's-eye view of a partially missing part explaining the flow of flame, combustion gas, etc. A bird's-eye view of FIG. 1-1 disassembled A bird's-eye view showing the chimney and the top surface taken out A bird's-eye view showing a state in which the combustion cylinder is rotated from the state shown in FIG. 3-1. The plan view of FIG. 1-1 including an enlarged view. Top view with the upper surface moved forward from the state shown in FIG. 4-1 A plan view in which the upper surface moves further forward and the sixth opening is formed later than in the state of FIG. 4-2. Conceptual bird's-eye view showing the flow of air in the combustor body Conceptual perspective view of Fig. 5-1 A bird's-eye view showing another example (use example) of a combustion appliance A bird's-eye view showing an example of use when using an underground hole in the combustor body A bird's-eye view showing another embodiment of the heat-burning machine body

Hereinafter, a preferred embodiment of the present invention will be described.

Reference numeral 1 denotes a combustor body (combustor) of a rectangular parallelepiped (including, but not limited to, a cylindrical body, a square shape, and other shapes), and in the example of FIGS. 1 to 5-2, the combustor body 1 is a peripheral. It is composed of a wall surface 100 (wall plate) surrounding the above surface, an upper surface 101 (top plate), and a bottom surface 102 (bottom plate) below. And, preferably, the member is made of a heat-resistant metal because it is intended for high-temperature combustion. Further, as the combustor main body 1, for example, an itto-kan can is desirable, and waste material is used, but the present invention is not limited. The upper surface is the upper surface of the upper surface 101 (combustor main body 1). The inside 1a of the combustor main body 1 is a combustion chamber 104. Further, the upper surface 101 forms a cut groove 103 in the rising portion 101a, and the cut groove 103 is fitted on the wall surface 100. Using this inlaid structure, a second opening 105 (first suction port) is formed with the upper surface opening portion of the combustor main body 1 (combustion chamber 104). The second opening 105 serves as a first intake port of the combustion chamber 104, and serves as both an air intake port such as outside air and a supply port for firewood and the like. That is, by moving the upper surface 101, for example, as shown in FIGS. 4-1 to 4-3 described later, by moving (opening and closing) the upper surface 101, for example, adjusting the width of the second opening 105, in FIG. It is an act of adjusting the size of the open area in the front-rear X and Y directions, or selecting the opening of only one side y. For example, there is an example shown in FIGS. 4-1 to 4-3. FIG. 4-1 is a plan view of FIG. 1-1, in which the upper surface 101 is located at the rear Y and the outside air (air) is sucked only from the second opening 105. Further, in FIG. 4-2, the upper surface 101 has moved to the front X from FIG. 4-1 but is located at the rear Y as in FIG. 4-1 and the outside air is sucked only from the second opening 105. However, the second opening 105 is narrowed, and the outside air suction is reduced as compared with FIG. 4-1. For example, it is possible to reduce the heat power adjustment and the consumption of the firewood W. Further, in FIG. 4-3, the upper surface 101 moves further forward X from the state of FIG. 4-2 and forms a sixth opening 107 in the rear Y, and together with the second opening 105, from the sixth opening 107. It becomes the outside air suction. As a result, the outside air is sucked into the combustion chamber 104 substantially evenly, and even combustion can be achieved. Other than that, the adjustment of the second opening 105 can change, for example, the relationship between the suction amount of air and the fourth opening of the combustion cylinder described later, the intake direction of the high-temperature combustion gas, the intake amount thereof, and the like. It is conceivable that the situation of secondary combustion can be changed, and so on (the same can be said for other structures). The open area of the second opening 105 can be adjusted by placing a plate material (not shown), a kettle, a device such as a cooking device, or a closed object. As shown in FIG. 8, the second opening 105 may be provided on the wall surface 100 of the combustor main body 1 (combustion chamber 104). FIG. 6 and the like are views in which the trivet 4 and the kettle are placed in the opening of the chimney 3, which is an example. Further, the second opening 105 (first suction port) also serves as a supply port for firewood and the like. The upper surface 101 may be a flat plate.

In this example, the first opening 106 (exhaust port) provided on the upper surface 101 has an octagonal end face shape, and the combustion cylinder 2 is suspended from the first opening 106, but the lower end of the combustion cylinder 2 is suspended. The third opening 200 is separated from the bottom surface 102 of the combustor main body 1 (it serves as a suction port). Therefore, the combustion gas A generated in the combustor main body 1 has a structure that passes through the third opening 200 and reaches the inside 201 of the combustion cylinder 2 without receiving resistance. The upper portion of the annular bulging portion 203 bulging upward (Z direction) of the combustion cylinder 2 protrudes from the upper surface of the upper surface 101. The annular bulge 203 is used for hanging, for example, and the protruding portion is for supporting the chimney 3.

A fourth opening 202 is opened above the combustion cylinder 2 (lower side of the narrowing cylindrical portion 2b above the combustion chamber 104 of the combustor body 1), and the fourth opening 200 is generated by the combustor body 1. After that, the high-temperature combustion gas A1 (combustion gas rising toward the upper surface 101) that has risen in the combustion chamber 104 is taken in, and the high-temperature combustion gas A1 and the combustion gas A that has risen inside 201 of the combustion cylinder 2 are taken in. It is characterized by being able to burn (secondary combustion) the mixed combustion gas A2 that merges with. The narrowing cylinder portion 2b is, for example, a portion (part) above the lid 101 of the combustion cylinder 2 and a portion to which the chimney 3 can be attached. Further, the narrowing cylindrical portion 2b functions as a chimney.

Reference numeral 3 in the figure is a chimney, which is connected to the narrowing cylindrical portion 2b of the combustion cylinder 2. Also, 4 indicates the trivet.

The combustion cylinder 2 has a structure in which the cylindrical portion 2a is rotatably provided in the first opening 106 of the upper surface 101, and has a structure in which the fourth opening 202 is provided above. Therefore, the above-mentioned secondary combustion can be achieved. Further, by utilizing the fact that the combustion chamber is rotatable, it is possible to select from any part of the combustion chamber 104 to take in the high-temperature combustion gas A1 and / or adjust the intake amount thereof. The fourth opening 202 is, for example, halved in size of the entire peripheral surface of the combustion cylinder 2. The fitting position of the combustion cylinder 2 in the first opening 106 can be changed. For example, the combustion cylinder 2 can rotate in the horizontal direction in a state where a combustion appliance is installed (for example, in a horizontal state). By utilizing this rotation, the direction in which the fourth opening 202 faces can be freely changed. Further, by this change, the intake amount of gas such as high-temperature combustion gas A1 in the combustion chamber 104 (the amount of high-temperature combustion gas A1 that merges with the combustion gas A in the combustion cylinder 2) can be adjusted, or the second opening. The amount of air taken in from 105 can be adjusted. At the same time, the amount of air taken in from the fifth opening 108 can be adjusted.

Further, when the combustion cylinder 2 is inserted into the first opening 106, a fifth opening 108 (a gap formed when the combustion cylinder 2 is inserted) is formed between the first opening 106 and the chimney 3. .. The fifth opening 108 serves as a second intake port (second suction port). Others, for example, use the sucked air to cool the narrowed cylindrical portion 2b of the combustion cylinder 2 and / or the high heat portion of the chimney 3. It is also possible to suck air into the combustion chamber 104 (indoor) of the combustor main body 1 as the second intake port.

In the example of FIG. 7, the combustor main body 1 is the structure of another example in which the hole 1000 is in the ground. Hereinafter, as a general rule, the combustor main body 1 includes a hole 1000. And in this other example, the other structure is the same as the above-mentioned example of FIGS. 1 to 5-2, and in this other example, the combustion state and its function, and each combustion gas, and / or , The flow of air, etc., the relationship with exhaust, etc. conform to the above example.

Explaining the suction of outside air, the flow of internal air, and the flow of combustion gas A, that is, the use of combustion appliances, using FIGS. 1-1 and 1-2, the open second opening 105 is used. Then, the firewood W is put into the combustion chamber 104 of the combustor main body 1. Ignite firewood W. In the combustion chamber 104, the firewood W is burned to generate high temperature (high heat) combustion gas A (first combustion gas, high temperature air). The combustion gas A (including the unburned gas) flows (sucks) in the direction of the combustion cylinder 2 after bypassing the bottom surface 102. That is, after flowing so as to crawl on the bottom surface 102, the combustion cylinder 2 is smoothly guided from the third opening 200 into the combustion cylinder 2 and then raised. Further, the other combustion gas A is affected by the suction force generated in the combustion cylinder 2, and most of the combustion gas A is attracted into the combustion cylinder 2 from the fourth opening 202.

The attracted combustion gas A rises in the combustion cylinder 2. Then, on the way, a negative pressure phenomenon occurs in the vicinity of the fourth opening 202 and the tubular portion 2c at the upper end on the back surface side of the fourth opening 202. Due to this negative pressure phenomenon, the high-temperature combustion gas A1 that has risen in the combustion chamber 104 is taken in after being generated by the combustor main body 1. Therefore, the mixed combustion gas A2 can be burned (secondary combustion) by the high-temperature combustion gas A1 and the combustion gas A that has risen inside 201 of the combustion cylinder 2. In this secondary combustion, the smokeless combustion gas A3 is released to the outside from the chimney 3.

Then, in the drawings, in FIGS. 1-2, 5-1 and the like, the flow of the combustion gas A and the high-temperature combustion gas A1 is shown by arrows.

The upper surface 101 and the trivet 4 are used for placing pots, kettles, kettles, etc., and for warming and cooking food.

The feature of the present invention is, in principle, that the Ito can, the pail can, the drum can, or the hole in the ground, which is the combustor main body 1, is in a closed state, but if necessary, the combustor main body. It is also possible to provide an opening / closing type intake port on the peripheral wall surface of 1.

Each of the examples described above shows a preferable example, and other structures and means having similar effects and characteristics are within the scope of the present invention.

1 Combustor body (combustor or hole)
100 wall surface (wallboard)
101 Top surface (top plate)
101a Rising top 102 Bottom plate (bottom plate)
103 Cut groove 104 Combustion chamber (inside 1a of the combustor body)
105 2nd opening (1st intake port)
106 1st opening (exhaust port)
107 6th opening 108 5th opening 1000 Underground hole 2 Combustion cylinder 200 3rd opening 201 Inside 202 4th opening 203 Swelling part 2a Cylindrical part 2b Narrowing cylindrical part 2c Cylindrical part 3 Chimney 4 Gotoku A Combustion gas A1 High temperature Combustion gas A2 Mixed combustion gas A3 Smokeless combustion gas X Front Y Rear y One side Z direction W Firewood

Claims (5)

In a combustor appliance provided with a first intake port and an exhaust port serving as second and first openings on any surface of the combustor body and equipped with a combustion chamber for burning firewood and waste materials.
A single-tube combustion cylinder for secondary combustion is attached to the lower side of the exhaust port, and a third opening is formed between the lower end of the combustion cylinder and the bottom surface of the combustor main body.
A fourth opening that opens directly into the combustion chamber is formed in the combustion cylinder.
The first opening has an octagonal shape.
A fifth opening is formed between the narrowing cylindrical portion of the combustion cylinder provided at the exhaust port or the chimney provided at the combustion cylinder and the first octagonal opening.
The combustion gas on the bottom surface of the combustor body is taken into the combustion cylinder from the third opening, and then sucked above the combustion cylinder from the combustion gas and the fourth opening of the combustion cylinder. A combustion appliance characterized by secondary combustion with the high-temperature combustion gas taken in. The combustion appliance according to claim 1, wherein any one of the surfaces is an upper surface of the combustor main body, and the first intake port is provided on the upper surface thereof. The combustion appliance according to claim 1, wherein the chimney is attached to the exhaust port. The combustor according to claim 1, wherein the combustor main body is a closed container. The combustor according to claim 1, wherein the combustor main body utilizes an itto-kan, a pail can, a drum can, a can of a structure, or a hole in the ground.