JP7150291B2 - Combustion device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion apparatus capable of generating steam gas more efficiently by facilitating upward blowing of flame.

In recent years, there are many situations where combustion heat is required, and combustion equipment is used for these needs. Combustion devices burn various fuels to generate combustion heat. This combustion heat serves a variety of purposes.

For example, combustion heat from a combustion device is used to incinerate waste. Alternatively, combustion heat from a combustion device is also used in soil improvement. This is because soil modification can be achieved by heat-fumigating contaminated soil.

In addition to these, in recent years, combustion heat power generation, which is small and can generate power in various places, has been performed. Instead of the so-called electric power company's power plant, power generation that creates a small amount of power generation may be performed according to the needs in a small area.

For example, it is a case where electric power is needed in a limited area such as a residential area, a factory, a farmland, a livestock area, etc., where electric power is problematic, or in an area where electric power transmission is difficult. In such locations, the cost of completing the grid from the power company is high and power transmission is difficult. Alternatively, in a large area such as a factory or farmland, it is difficult to distribute electric power to all areas.

Alternatively, power may be required only at certain times. In such areas, power may be required only for a certain period of time, depending on the type of work.

In this way, there may be a narrow area where the power supply from the electric power company is insufficient. In such places, power generators are sometimes used.

In such a power generator, combustion heat obtained by the combustion device rotates a turbine to generate electric power. For example, a power generator has a container that stores water, and a combustion device heats this container to generate water vapor (gas). This steam turns a turbine to generate electricity.

In this way, a combustion device is used in power generation in the power generation device. Efficient use of the combustion heat of the combustion device improves the power generation efficiency of the power generation device.

Techniques for such combustion devices have been proposed (see, for example, Patent Documents 1 and 2).

Japanese Patent Application Laid-Open No. 2007-303737 JP 2017-161157 A

In Patent Document 1, the pyrolysis furnace device 10 includes a combustion chamber 27, a rotating drum 11 provided through the combustion chamber 27, and an injection screw 22 provided in an inlet-side non-heating region 11a of the rotating drum 11. It has A scraping plate 33 is fixed to the upper portion of the screw casing 23 of the feeding screw 22 provided in the inlet-side non-heating region 11a of the rotating drum 11, and the scraping plate 33 has a shape that curves while rotating radially outward. have. A pyrolysis furnace device is disclosed in which deposits adhering to the inner surface of the rotating drum 11 are removed by the scraping plate 33 .

Patent Literature 1 aims to burn waste materials and separate them into gas, which is a volatile component, and combustion residue during combustion.

However, in the technique of Patent Document 1, clinker is generated and remains in the combustion chamber or inside the drum. The generation of this clinker makes it difficult to increase the combustion efficiency of the pyrolysis furnace. This is because if the clinker remains or adheres, the clinker hinders combustion and reduces the combustion efficiency.

Alternatively, if clinker remains or adheres to the inside, it is necessary to periodically remove the clinker. The clinker removal work is troublesome, and the combustion process cannot be executed during the work period. For this reason, there is also the problem that the combustion efficiency on the time axis decreases.

Moreover, there is also a problem that the combustion capability in the pyrolysis furnace apparatus is lowered due to the remaining or adhering clinker. Such clinker is more likely to occur when the fuel in the combustion device is biomass, wood fuel, or the like.

If the combustion efficiency is lowered due to the remaining clinker, there is a problem that the power generation efficiency of the combustion device is also lowered. Alternatively, frequent maintenance of the combustion device is required, and problems such as the need to interrupt power generation in the power generation device also arise.

Patent document 2 includes a fuel cell unit 40 that generates electric power by being supplied with combustion gas E after passing through the inside of container 21 as a reducing agent and by being supplied with air A as an oxidizing agent. Combustion provided with a control device S for executing a power-generating combustion operation for generating electric power in the fuel cell unit 40 in a form in which the excess air ratio of the air-fuel mixture in the combustor 10 is controlled to be less than 1 by the ratio control means V1, V2, and V3. Disclose the device.

The combustion apparatus of Patent Document 2 has a structure in which a flame is applied sideways to an object to which combustion heat is applied.

Many combustion devices, including Patent Document 2, have a cylindrical shape and have a structure in which flame is blown out from an opening at the tip of the cylinder. With such a structure, the combustion device applies the flame from the tip opening to the moisture container, which is an element of the power generation device.

This side flaming results in poor heating of the moisture container and inability to generate sufficient steam for the power plant. As a result, there is a problem that power generation efficiency cannot be increased. If the cylinder is oriented upward, the efficiency of combustion inside the cylinder will deteriorate, and if the heat of combustion is increased to prevent this, clinker will be generated. That is, the same problem as in Patent Document 1 arises.

As described above, the conventional technology has a problem that it is not possible to efficiently generate the steam required for the power generator. Alternatively, there has been a problem of a decrease in power generation efficiency due to generation of clinker or the like.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a combustion apparatus that can be used in a power generator and that increases power generation efficiency.

The combustion device of the present invention comprises: a body cylinder to which a combustion material is supplied;
a combustion tube connected to the tip of the main tube;
an upper opening that is in front of the combustion tube and opens upward;
a rotating vane that rotates in at least a part of the main cylinder and the combustion cylinder;
A flame generated in the combustion cylinder is generated upward from the upper opening,
The combustion cylinder is swingable with respect to a horizontal plane .

The combustion device of the present invention can raise the flame upward. As a result, the water container, which is the base of the power generation device, can be heated from the bottom, and the efficiency of steam generation can be improved. By these, the power generation efficiency of the power generation device using the combustion device can be improved.

In addition, since the front part of the combustion device is open, the combustion temperature does not rise too much. As a result, it is also possible to suppress the generation of clinker inside the combustion device. As a result, interruption of the power generation system due to maintenance of the combustion system can be reduced.

In addition, since the upper part is open, the flame can be directed upward, so that the main body of the combustion device can be installed horizontally. Therefore, there is no difficulty in supplying fuel to the combustion device and in the combustion operation, and combustion by the combustion device can be reliably performed.

1 is a side view of a combustion device according to an embodiment of the invention; FIG. 1 is a front view of a combustion device according to an embodiment of the invention; FIG. 1 is a front view of a combustion device according to an embodiment of the invention; FIG. 1 is a side view of a combustion device according to an embodiment of the invention; FIG. It is a mimetic diagram of a combustion device and a power generator in an embodiment of the invention.

A combustion device according to a first aspect of the present invention includes a body cylinder to which a combustion material is supplied,
a combustion tube connected to the tip of the body tube;
an upper opening that is in front of the combustion tube and opens upward;
Rotating blades that rotate in at least part of the main cylinder and the combustion cylinder,
A flame generated in the combustion cylinder is generated upward from the upper opening.

With this configuration, it is possible to efficiently apply combustion heat to a power generator, a drying device, and the like installed above.

In the combustion device according to the second aspect of the present invention, in addition to the first aspect, the upper opening is open only upward in part or all of the front side of the combustion tube.

With this configuration, the flame from the combustion tube is blown upward.

A combustion apparatus according to a third aspect of the present invention, in addition to the first or second aspect, further includes a fuel supply section for supplying combustion material to the main cylinder.

With this configuration, the combustion material can be automatically or continuously supplied to the internal space of the main cylinder and the combustion cylinder communicating therewith. Combustion can continue.

In the combustion device according to the fourth aspect of the present invention, in addition to any one of the first to third inventions, the rotary vane agitates the combustion material.

This configuration can improve combustion efficiency. By improving the combustion efficiency, it is possible to increase the combustion heat of the flames jetted upward.

In a combustion device according to a fifth aspect of the present invention, in addition to the first to fourth aspects, the rotary blade has a shaft member serving as a rotation shaft and a blade member that protrudes from the shaft member and rotates,
The inside of the shaft member and the blade member has a hollow portion, and the hollow portion supplies air to at least part of the main tube and the combustion tube.

With this configuration, the combustion efficiency in the combustion cylinder can be improved.

In the combustion device according to the sixth aspect of the present invention, in addition to any one of the first to fifth aspects, the combustion cylinder is swingable with respect to the horizontal plane.

This configuration further promotes the agitation of the combustible material and the supply of air during combustion.

In the combustion device according to the seventh aspect of the present invention, in addition to any one of the first to sixth aspects, the flame is generated along the substantially vertical direction with respect to the combustion tube.

With this configuration, it is possible to efficiently apply heat to a power generator, a drying device, and the like installed above.

In the combustion device according to the eighth aspect of the present invention, in addition to the seventh aspect, the flame generated upward becomes combustion heat for heat utilization including steam generation in the power generation device.

With this configuration, it is possible to apply combustion heat required for power generation of the power generation device.

In a combustion device according to a ninth aspect of the present invention, in addition to any one of the first to eighth aspects, the combustion material includes at least one of wood chips, bamboo chips, bioethanol fuel, and biodiesel fuel. include.

With this configuration, it is possible to achieve combustion that is friendly to the environment.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)

(overall overview)
A general outline of a combustion apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 and 2. FIG. FIG. 1 is a side view of a combustion device according to an embodiment of the invention. FIG. 2 is a front view of a combustion device according to an embodiment of the invention. Each of the figures schematically shows the combustion device 1, and is simply shown so that its configuration and features can be understood.

The combustion device 1 includes a main cylinder 2 , a combustion cylinder 3 , an upper opening 31 and rotary vanes 4 .

A combustion material 10 is supplied to the body tube 2 . The body tube 2 is a portion that receives the supply of the combustible material 10 and ignites to start combustion. Further, the main tube 2 serves as a base structure of the combustion device 1 and forms the structure of the combustion device 1 as a whole. The body tube 2 is tubular. It may have various shapes such as a cylinder, a square tube, a polygonal tube, an elliptical tube, and the like.

The combustion cylinder 3 is connected to the tip of the main cylinder 2 . The combustion cylinder 3 is a part that burns the combustible material 10 and generates a combustion flame. The combustible material 10 supplied to the main cylinder 2 is ignited, and the combustible material 10 caused by this ignition is caused to burn. A flame is generated in the combustion cylinder 3 by this combustion. The heat generated by the flame can be directed to the outside.

The upper opening 31 opens upward in front of the combustion tube 3 . FIG. 2 shows the combustion device 1 viewed from above, and the upper opening 31 is opened at the upper side. A flame 20 generated in the combustion cylinder 3 is generated upward from the upper opening 31 . FIG. 1 shows a state in which flame 20 is generated upward from upper opening 31 .

Rotating blades 4 are provided on at least part of main tube 2 and combustion tube 3 . inside these. In FIGS. 1 and 2, a rotating vane 4 is provided from a portion of the interior of the main tube 2 to a portion of the interior of the combustion tube 3 . This rotary vane 4 rotates. The rotation can agitate the combustible material 10 inside these tubes to increase combustion efficiency. Also, it is possible to promote mixing of the combustible material 10 and air to promote combustion. Due to this accelerated combustion, the flame 20 with high combustion efficiency is generated upward from the upper opening 31 .

Since the upper opening 31 is provided in the combustion tube 3, the flame normally emitted from the tip of the combustion tube 3 is emitted upward. In various devices and systems that use the heat of the flame 20 of the combustion device 1, it is sometimes preferable to use the heat of the flame 20 ejected from below. For example, in a power generator or the like, it is preferable to use the heat of this flame 20 rising from below.

In prior art combustion devices, the combustion can 3 is not provided with an upper opening 31 . For this reason, the flame generated by combustion in the combustion cylinder 3 and the combustion heat from the flame are only ejected from the front. If the combustion cylinder 3 is tilted upward, flame and combustion heat can be blown out obliquely upward, but upward is difficult. If the combustion cylinder 3 is turned completely upward, the combustion material 10 will accumulate at the bottom inside the combustion cylinder 3 and the main cylinder 2, making combustion difficult.

As described above, in power generators and dryers that use combustion heat, receiving combustion heat from the flame 20 from below has the highest thermal efficiency. From this point of view, it is most preferable that the flame 20 in the combustion device 1 is blown upward. In this respect, the combustion device 1 according to the embodiment is provided with the upper opening 31, so that the flame 20 is reliably blown upward. With this structure, optimal combustion heat can be applied to devices such as power generators and drying devices that preferably receive high combustion heat from below.

Rotating blades 4 are provided in at least part of the interiors of main tube 2 and combustion tube 3 . As shown in FIGS. 1 and 2, it has a shaft member 41 which is a rotating shaft, and the rotation of this shaft member 41 causes the blade member 42 to rotate. The rotation of the rotary blades 4 agitates the combustion material 10 inside the main tube 2 and the combustion tube 3 . This agitation increases combustion efficiency.

Further, the combustion efficiency is increased by agitating the insides of the main tube 2 and the combustion tube 3 . In particular, the agitation of the combustion improves the efficiency of the flames 20 that are generated, and the efficiency of imparting the combustion heat upward by the flames 20 that are blown up also increases.

Furthermore, the agitation of the rotary blades 4 also has the advantage of reducing the generation and adhesion of residues inside the main tube 2 and the combustion tube 3 .

Next, details and variations of each part will be described.

(upper opening)
The upper opening 31 opens only upward in a part or the whole of the front side of the combustion cylinder 3 . This state is shown in FIG. Since it is open only upward, most of the flame 20 generated by combustion is jetted upward. By this ejection, appropriate heat can be applied to devices and equipment that preferably receive combustion heat from below.

As shown in FIG. 2, the upper opening 31 may open up to the tip of the combustion tube 3, or may open up to the middle of the combustion tube 3 as shown in FIG. FIG. 3 is a front view of a combustion device according to an embodiment of the invention. The difference in position of the upper opening 31 in the front and back of the combustion tube 3 leads to a change in the form of the flame 20, such as spouting. It is possible to change the way the flame 20 is ejected according to the type of device or equipment that applies combustion heat.

Also, in these cases, the flame 20 can efficiently impart combustion heat from the bottom to the top because the flame 20 blows out only upward.

It is also preferable that the upper opening 31 is of an opening/closing type or a sliding type, and that the opening range and area can be changed.

(Body cylinder)
The body cylinder 2 is a part that receives the supply of the combustible material 10 to start ignition and combustion. Also, it is a part that makes up the overall structure of the combustion device 1 .

The body tube 2 has a structure that accommodates the combustible material 10 and starts combustion. For this reason, it is preferable that it has a tubular shape such as a cylinder or a rectangular tube and has an internal space. In addition, it is preferable to have a structure for receiving agitation due to the rotation of the rotating blades 4 .

Further, the main cylinder 2 may be rotatable independently of the combustion cylinder 3 provided at its tip. This is because the efficiency of agitation by the rotating blades 4 can be increased by being rotatable.

Moreover, as shown in FIG. 4, it is also preferable to further include a fuel supply unit 5 that supplies the combustion material 10 to the main cylinder 2 . FIG. 4 is a side view of the combustion device according to the embodiment of the invention.

The fuel supply portion 5 is connected to the main cylinder 2 . Through this connection, the fuel supply unit 5 supplies the combustion material 10 to the main cylinder 2 . By supplying the combustible material 10 , the main cylinder 2 can burn the combustible material 10 . In addition, since the fuel supply unit 5 is continuously supplied, the combustion in the combustion device 1 becomes continuous, and the function of generating combustion heat becomes continuous.

The fuel supply unit 5 may automatically supply the combustion material 10 by mechanical operation, or may supply it manually.

(combustion cylinder)
The combustion cylinder 3 is connected to the tip of the main cylinder 2 . It is connected to the tip of the body tube 2 and communicates with its internal space. Since the internal spaces are connected to each other, the combustible material 10 can be combusted as a whole.

The combustion cylinder 3 burns the combustion material 10 to generate the flame 20 . This flame 20 spouts upward from the upper opening 31 . The jet irradiates the heat of combustion upwards.

The flame 20 is generated along a substantially vertical direction with respect to the combustion tube 3 when the combustion tube 3 is horizontal. As shown in FIG. By blowing up substantially vertically, for example, a power generation device, a drying device, or the like can be installed above the combustion device 1, and combustion heat can be applied to them from below.

Power generators and dryers can exhibit their functions by combustion heat. Sufficient heat can be received by applying this combustion heat from below. By receiving sufficient heat, the power generation efficiency of the power generation device and the drying efficiency of the drying device are enhanced.

It is also preferable that the combustion cylinder 3 is swingable with respect to the horizontal plane. The ability to oscillate makes the agitation of the combustion material 10 in the combustion cylinder 3 more efficient, increasing the combustion efficiency. Alternatively, the burst level of the flame 20 is improved. If the blow-up level is improved, the level of imparting heat of combustion of the flame 20 is improved.

Alternatively, it is possible to make an angle such as upward or downward with respect to the horizontal plane. This is because the angle makes it possible to adjust the direction and angle of the flame 20 that shoots upward.

(Rotating blade)
The rotating blades 4 agitate the combustion material 10 . It rotates in the communicating internal space created by connecting the main cylinder 2 and the combustion cylinder 3 . This rotation agitates the combustible material.

As described above, the rotating blade 4 has the shaft member 41 that serves as the rotation shaft, and the blade member 42 that protrudes from the shaft member 41 and rotates. As the shaft member 41 rotates, the blade member 42 rotates.

This blade member 42 can stir the combustion material 10 and the flame 20 generated by combustion. These agitations increase combustion efficiency. By increasing the combustion efficiency, the application of combustion heat by the flame 20 is further improved.

At least part of the interior of the shaft member 41 and the blade member 42 preferably has a hollow portion. This hollow portion can supply air to at least part of the inner space of the main tube 2 and the combustion tube 3 . The supply of this air further promotes combustion in the internal spaces of the main cylinder 2 and the combustion cylinder 3 .

The internal space where the main tube 2 and the combustion tube 3 communicate is closed except for the tip end and the upper opening 31 . In this state, the supply of air (oxygen) may be insufficient. On the other hand, if air is supplied from the rotating blades 4, this shortage can be compensated for. The rotor blade 4 has a hollow portion inside, and an air pump or the like is provided outside the rotor blade 4 to send air into the hollow portion. This sent-in air is supplied from the hollow portion to the internal space.

Also, it is preferable that air is supplied from the inner walls of the main tube 2 and the combustion tube 3 . In this case, it is preferable to have a structure in which a space exists inside the main cylinder 2 and the combustion cylinder 3 and air is blown out from this space.

Also, it is preferable that the blade member 42 has a recess. This is because the vane member 42 having the recess can scoop up the combustible material 10 during its rotation, and the combustible material 10 can be agitated more efficiently. Also, air can be introduced into the combustible material 10 and the combustion zone to improve combustion efficiency.

(Use of combustion heat)
The flame 20 generated upward from the upper opening 31 is used as combustion heat required by the power generator and the drying device. For example, it is used as combustion heat for generating steam in a power generator.

FIG. 5 is a schematic diagram of a combustion device and a power generation device according to an embodiment of the present invention. A state in which a power generation device 50 is installed on the combustion device 1 is shown. In FIG. 5, the power generator 50 is shown as an element, and its configuration may vary depending on the power generator that is actually used.

A power plant 50 often requires steam to rotate its turbine. The flame 20 may impart combustion heat from below the power generator 50 . Since the flame 20 is from below, the efficiency of imparting combustion heat to the power generator 50 is enhanced. The power generator 50 uses this combustion heat to generate steam and rotate the turbine. As a result, electric power can be generated.

(combustion material)
Combustion material 10 includes at least one of wood chips, bamboo chips, bioethanol fuel, and biodiesel fuel. This is because these fuels are readily available and have a low environmental load.

As described above, the combustion device 1 according to the embodiment can blow the flame 20 upward, so that combustion heat can be efficiently imparted. As a result, it is possible to improve the functional efficiency of power generators and dryers that use combustion heat.

The combustion devices described in the first and second embodiments above are examples for explaining the gist of the present invention, and include modifications and alterations within the scope of the gist of the present invention.

REFERENCE SIGNS LIST 1 combustion device 2 main tube 3 combustion tube 4 rotary blade 41 shaft member 42 blade member 5 fuel supply unit 10 combustion material 20 flame 50 power generator

Claims (8)

a body cylinder to which combustion material is supplied;
a combustion tube connected to the tip of the main tube;
an upper opening that is in front of the combustion tube and opens upward;
a rotating vane that rotates in at least a part of the main cylinder and the combustion cylinder;
A flame generated in the combustion cylinder is generated upward from the upper opening,
The combustion device , wherein the combustion cylinder is swingable with respect to a horizontal plane . 2. The combustion apparatus according to claim 1, wherein said upper opening opens only upward in a part or the whole of the front side of said combustion tube. 3. The combustion apparatus according to claim 1, further comprising a fuel supply section for supplying combustion material to said main cylinder. 4. The combustion apparatus according to any one of claims 1 to 3, wherein said rotating vane agitates said combustion material. The rotary blade has a shaft member that serves as a rotation shaft and a blade member that protrudes from the shaft member and rotates,
5. Combustion according to any one of claims 1 to 4, wherein said shaft member and said blade member have a hollow portion inside, and said hollow portion supplies air to at least part of said main cylinder and said combustion cylinder. Device. 6. The combustion apparatus according to any one of claims 1 to 5 , wherein said flame is generated along a direction substantially perpendicular to said combustion tube. 2. The combustion device according to claim 1 , wherein said flame generated upward serves as combustion heat for heat utilization including steam generation in a power generation device. 8. The combustion device according to any one of claims 1 to 7 , wherein said combustion material includes at least one of wood chips, bamboo chips, bioethanol fuel and biodiesel fuel.

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