JP2010255971A - Biomass combustion device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a biomass combustion device capable of facilitating both heating power adjustment and temperature control, obtaining high combustion efficiency, enabling automation throughout combustion continuation and extinction as necessary and capable of inexpensively achieving a safe use in many aspects. <P>SOLUTION: The biomass combustion device includes: a combustion furnace body having a plurality of combustion chambers; a kiln body having a hot water storage tank and an air intake port etc. and provided at the upper side of the combustion furnace body; a fuel kindling port provided in the lower part of the combustion furnace body; an air exhaust device communicating with the combustion furnace body to suck exhaust gas and discharge it to outside; a fuel supply means to the combustion chambers; a normal temperature air supply device for supplying air from outside the combustion furnace body to the combustion chambers; a heating air supply device for supplying heating air to the combustion chambers by suction operation by the air exhaust device; and a control means for the supply operation by the fuel supply means, a normal temperature air amount, a heating air amount and a hot water temperature in the hot water storage tank, etc. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a biomass material combustion apparatus, and more specifically, firewood, sawdust, wood chips, wood pellets, bamboo, bamboo chips, fallen leaves, sawdust, twigs, beans, straw of rice and wheat, rice and wheat The present invention relates to a biomass combustion apparatus capable of automatically supplying rice grains, pruning materials of various plants, and the like to a hearth and operating them according to predetermined set values.

薪 Other plant-derived fuels have lost their practical status from Japanese society due to the widespread use of cheap and convenient fossil fuels such as oil and coal, as well as convenient heaters, water heaters, and rice cookers. is there.
However, the large amount of carbon dioxide emissions associated with the consumption of these fossil fuels is causing the destruction of the global environment, and there is a demand for the rapid use of renewable biomass fuel and the reduction of fossil fuel consumption. Furthermore, 75% of the country is covered with forests, and the sustainable use of regenerated timber resources is an urgent need.
On the other hand, in the current Japanese society where labor costs are high, it is a consultation that cannot be heated with a firewood or cooked with a firewood, no matter how low the price ratio of conventional fuel such as firewood. In addition, the modern Japanese housing situation is not in a state that allows it, and the reality is that there is no narrow space.

However, if you turn your eyes to the local area, there are many places where you can feel that there is enough sbass and even comfort. And there are many forests that are used as raw materials for the firewood in local cities. Moreover, there are enough users with the most suitable conditions for house agriculture, local factories, schools and hospitals.

Now, what is necessary for the intended users is to provide convenience and safety. If the price is cheap, convenient, safe, and good for the global environment, it is a resurgence of firewood resources and fuels, and has the advantage of leading to the utilization of forest resources.

Conventionally, as a soot stove device for burning fuel such as soot, those disclosed in, for example, Japanese Patent Laid-Open Nos. 2000-46334, 2004-77060, and others are known. The wood stove device is provided with an openable / closable lid at the upper opening of a cylindrical furnace body, for example, in which fuel is fired and burned. Moreover, a rooster is disposed at a position slightly above the bottom of the furnace body at the lower part of the furnace body, and an air supply chamber for supplying air from the outside to the furnace body is provided below the rooster. Yes. The furnace body is connected to a chimney for discharging the burned smoke and exhaust gas to the outside of the building. Various ideas have been made to efficiently burn the fuel.

JP2007-285660 JP2007-170730A JP2007-132588 JP2004-191010 JP2004-077060

The fuel itself is one of the most controllable fuels of humanity, but it is one of the most troublesome fuels. is doing. In other words, plant fuels such as firewood are solid, amorphous, contain moisture, have different thermal power, and even burn ash ash is generated, which is inevitably used for cleaning and maintenance. The user's hand is bothered. Even a small amount of ash is now subject to the separate collection of garbage, and the processing of the small amount of ash becomes a self-responsibility and becomes a burden on the user side, which further troubles the hand.
In addition, today, if a biomass fuel such as firewood is used as a heat source boiler, a means for automatically adjusting both thermal power and temperature management, that is, how to burn and burn, and self-extinguish in an emergency is required. It is the actual situation that conventional wood stoves and the like have not been able to avoid the above disadvantages.

The present invention is a combustion apparatus for burning soot and other biomass materials, and has a combustion furnace main body having a plurality of combustion chambers, a hot water storage tank, an air intake, and the like, and is provided at the upper part of the combustion furnace main body. A hook body, a fuel sprinkling port provided at a lower portion of the combustion furnace body, an exhaust device communicating with the combustion furnace body for sucking exhaust gas and exhausting it to the outside, fuel supply means to the combustion chamber, and the fuel chamber A normal temperature air supply device for supplying air from outside the combustion furnace body, a heated air supply device for supplying heated air to the fuel chamber by a suction operation of the exhaust device, a supply operation of the fuel supply means, and an operation of the exhaust device And a control means for controlling the normal temperature air amount and the heated air amount based on this, the hot water temperature of the hot water storage tank, the strength of the combustion chamber thermal power, the combustion time, etc. Task It is intended to solve.

Further, in the biomass combustion apparatus, the combustion chamber is located at a first combustion chamber for burning the biomass material while supplying primary air as normal temperature external air from the normal temperature air supply device, and an upper portion of the first combustion chamber. A second combustion chamber for supplying secondary air as heated air from the heated air supply device to the combustion gas from the first combustion chamber to raise the temperature of the combustion gas; and an upper portion of the second combustion chamber. There may be a configuration including a third combustion chamber for supplying tertiary air as heated air from the heated air supply device to the combustion gas from the second combustion chamber to further raise the temperature of the combustion gas.

Further, in the biomass combustion apparatus according to any one of paragraphs 0008 and 0009, the room temperature air supply device includes an air port opening / closing valve that is driven and controlled by a control means, and the heated air supply device communicates with an air intake port. A second flow path provided on the inner wall of the combustion furnace body, a second air outlet formed in the second flow path and facing the second and third combustion chambers; It may be configured to have a tertiary air outlet.

The biomass combustion apparatus according to any one of paragraphs 0008 to 0010, wherein the first flow path is heated by combustion exhaust gas flowing from the combustion chamber to the exhaust apparatus, and the second flow path is heated by the combustion chamber. May be included.

Furthermore, in the biomass combustion apparatus according to any one of paragraphs 0008 to 0011, the exhaust apparatus includes suction means and an exhaust pipe, and the exhaust pipe has a first exhaust pipe having one end connected to the combustion furnace main body, A second exhaust pipe having one end connected to the other end of the first exhaust pipe and having first and second branch pipes, and a second exhaust pipe connected to the first branch pipe of the second exhaust pipe and having an exhaust port. 3 exhaust pipes, the suction means comprises a rotary blade part and a cooling fan of the rotary blade part, and the suction port of the rotary blade part is connected to the second branch pipe of the second exhaust pipe, The discharge port may have a configuration connected to the third exhaust pipe.

Further, in the biomass combustion apparatus according to any one of the above paragraphs 0008 to 0012, the soot supply means includes a rotating biomass fuel stocker, a fuel input cylinder, and a driving device for sequentially rotating the biomass fuel stocker, and the biomass The fuel stocker is provided with a biomass fuel catch hook on the inner peripheral wall, and the fuel injection cylinder has one open end facing the combustion chamber, and the other open end has a fuel receiving portion facing the biomass fuel stocker internal space, The biomass fuel captured by the biomass fuel capture hook with the rotation of the biomass fuel stocker is dropped and stored in the fuel receiving portion, and then sequentially slides into the fuel chamber from the open end of the fuel input cylinder facing the combustion chamber. There is.

  The present invention makes it easy to adjust both the thermal power and the temperature control with the above-described configuration, and provides high combustion efficiency, and can automate the entire combustion temperature setting, continuation of combustion, and extinguishment as necessary. Can be used safely at low cost. In addition, the plant materials that can be used for renewable fuels can be used widely and effectively, and contribute greatly to the appropriate development and conservation of agriculture and forestry.

It is a block diagram which shows schematic structure of the biomass combustion apparatus which concerns on one Example of this invention. It is a perspective view of the biomass combustion apparatus which concerns on one Example of this invention. It is the sectional view on the AA line of the biomass combustion apparatus shown in FIG. It is principal part explanatory drawing of the hook main body from the BB line direction of the biomass combustion apparatus shown in FIG. It is sectional drawing which shows the related structure of the hot water storage tank in a pot main body upper part. It is a cross-sectional view in the upper part of the biomass combustion apparatus shown in FIG. It is a partial cross section explanatory view showing one example of an exhaust device. It is explanatory drawing which shows the related structure of a combustion chamber and a fuel supply means. It is explanatory drawing which shows one Example of a fuel supply means.

In the biomass combustion apparatus according to the present invention, the flow of combustion air flows from the room temperature air supply apparatus (primary air supply apparatus) communicating with the lower part of the combustion furnace main body, through the combustion chamber to the exhaust apparatus, and the biomass combustion apparatus. There are two systems of a route from the intake port at the top of the gas to the exhaust device through the combustion chamber while being heated, that is, a flow of heated air (secondary and tertiary air) by the heated air supply device.

The amount of each air flow and the fuel supply by the fuel supply means are automatically controlled based on the set values, and the hot water temperature of the hot water storage tank, the strength of the combustion chamber, the combustion time, and the fire extinguishing are properly executed. It has a function to do. Therefore, the microcomputer as the control means performs various controls based on the data of the temperature sensor of the combustion chamber, the hot water temperature sensor of the hot water storage tank, and the fuel remaining amount sensor.

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of a biomass combustion apparatus according to one embodiment of the present invention, and FIG. 2 is an external perspective view of the biomass combustion apparatus 1. In the figure, reference numeral 1 denotes a biomass combustion apparatus, which comprises a combustion furnace body 2 constructed of a refractory material and having a plurality of combustion chambers. A shuttle body 3 having a secondary air intake port and the like is installed.

In the lower part of the combustion furnace main body 2, a fuel pouring port 4 is opened. The combustion furnace body 2 is connected to a room temperature air supply device 5 for supplying air from the outside to the fuel chamber of the combustion furnace body 2. Here, the normal temperature air means external normal temperature air, and the intake of the external air is performed by the suction action of the exhaust device described later.

The upper part of the combustion furnace main body 2 communicates with the exhaust device 6, whereby the combustion gas, waste heat, etc. generated in the combustion furnace main body 2 are dissipated to the outside.

Further, the combustion furnace main body 2 is provided with a heated air supply device 7 for heating air (secondary and tertiary air) taken from the upper part of the combustion furnace main body 2 and supplying it to the combustion chamber. It is designed to promote combustion.

In the fuel chamber of the combustion furnace main body 2, fuel, for example, firewood, wood chips, miscellaneous cutting pieces, and the like are supplied almost automatically from the fuel supply means 8 in accordance with setting inputs to the control means described later. Here, the term “substantially automatic” means that the fuel supply to the fuel supply means 8 is performed manually.

The biomass combustion apparatus 1 includes a control means 9 including a microcomputer and various sensors (combustion chamber temperature sensor, hot water storage tank temperature sensor) for operation control. The amount of normal temperature air (external normal temperature air) by the air supply device 5, the amount of heated air supplied to the combustion chamber by the heated air supply device 7, the hot water temperature of the hot water storage tank inside the pot body 3, adjustment of the strength of the thermal power in the combustion chamber, It will control the burning time and fire extinguishing operation. Note that a microcomputer as the control means 9 is built in the controller, and for example, operations such as standby, ignition, combustion continuation, and fire extinguishing can be input to instruct the control means 9.

FIG. 3 is a cross-sectional view taken along line AA of the biomass combustion apparatus shown in FIG. The combustion furnace main body 2 is formed with a first combustion chamber 2a, a second combustion chamber 2b, and a third combustion chamber 2c in order from the bottom, but the other combustion chambers except for the first combustion chamber 2a have particularly clear partition walls. However, it refers to the vicinity where secondary air and tertiary air are blown by the heated air supply device 7 as will be described later.

Outside air from the vents 7a and 7a on the upper surface of the biomass combustion apparatus 1 passes through the flow paths 7b and 7b to reach the second discharge ports 7c and 7c and the third discharge ports 7d and 7d, and is supplied into the combustion chamber from each discharge port. The The flow path 7b includes a first flow path and a second flow path. One end of the first flow path is connected to the vent 7a, the other end is connected to one end of the second flow path, and the other end of the second flow path is the second flow path. The second discharge port 7c is provided, and the third discharge port 7d is provided in the middle of the second flow path. Thus, the air flowing into the second combustion chamber 2b from the second discharge ports 7c and 7c is the secondary air, and the air flowing into the third combustion chamber 2c from the third discharge ports 7d and 7d is the tertiary air. As oxygen is newly supplied to the combustion chamber, high-temperature combustion occurs and the amount of generated heat increases, soot and the like generated in the first combustion chamber are also combusted, and the flue gas becomes clear.
The secondary air and the tertiary air are heated by the combustion chamber, exhaust gas, etc. while passing through the flow paths 7b, 7b surrounding the combustion furnace main body 2 (the first flow path is mainly adjacent). The combustion gas flowing upward in the passage that passes through the second flow path is caused by the adjacent combustion chamber), and the temperature of the combustion chamber is not lowered by the flow into the combustion chamber. As described above, the heated air supply device 7 is configured by the vent 7a, the flow path 7b, the second discharge port 7c, and the third discharge port 7d.

The secondary air and the tertiary air are located inside the flow path 7b as shown by black arrows after flowing as shown by white arrows in FIG. 3 and reaching the combustion chamber to burn the fuel. The gas flows through the combustion gas passage G and is discharged to an exhaust pipe P communicating with the exhaust device 6 (not shown). Note that the secondary air and the third air are taken in from the outside air and are distributed by forming the second combustion chamber and the third combustion chamber at a negative pressure by the suction action of the exhaust device 6.

  Further, in FIG. 3, 5 is a room temperature air supply device for supplying room temperature air (primary air) from the outside to the first fuel chamber 2 a of the combustion furnace body 2. The room temperature air supply device 5 communicates with a vent (not shown), an electric on-off valve (not shown) as an air on-off valve provided here, and a rooster L below the first combustion chamber 2a. And an air passage (not shown).

  When the biomass combustion apparatus 1 is switched on, the control means 9 puts the biomass combustion apparatus 1 into a standby state. The fuel supply means 8 operates to supply fuel, for example, biomass fuel such as firewood, wood chips, and miscellaneous pieces to the first combustion chamber 2a. Next, the fuel is ignited at the cooking port 4. When the fuel starts to burn, the temperature sensor in the combustion chamber detects the temperature rise, and the result is sent to the microcomputer of the control means 9 to determine the start of combustion. When the combustion starts, the electric on / off valve of the room temperature air supply device 5 is opened to a predetermined opening by a control signal from the control means 9, and the exhaust device 6 also starts to operate to start suction from the combustion chamber.

  When the exhaust device 6 starts to operate, the combustion chamber becomes negative pressure as described above, so external air flows into the combustion chamber via the room temperature air supply device 5 and the heated air supply device 7. The first air supplied to the first combustion chamber 2a burns the fuel in the first combustion chamber 2a. The combustion gas generated in the first combustion chamber 2a rises, and is mixed with the secondary air flowing in the second combustion chamber 2b as described above to increase the temperature. The high-temperature combustion gas further rises to the third combustion chamber and further flows into the third air that flows in, and will continue to increase in temperature. The combustion gas thus heated is exchanged with the secondary and tertiary air in the combustion furnace main body 2, the shuttle main body 3, and the passage 7b, and then diffused to the outside from the exhaust device 6.

When combustion in the combustion chamber is started, the subsequent fuel supply is performed by the control means 9 controlling the drive of the fuel supply means 8 based on a signal from the temperature sensor of the combustion chamber. That is, the temperature of the combustion chamber is detected based on the input set value, and the increase / decrease adjustment of the fuel supply amount, that is, the adjustment of the number of times of fuel supply per unit time is made according to the detection result.

  The extinguishing of the biomass combustion apparatus 1 is executed by stopping the supply of external air into the combustion furnace body 2. That is, by stopping the suction operation of the exhaust device 6, the combustion is stopped by shutting off the oxygen supply to the combustion furnace main body 2.

FIG. 4 is an explanatory view of a main part of the hook body viewed from the direction of the BB line of the biomass combustion apparatus shown in FIG. In the figure, reference numeral 10 denotes a hook body having a pair of leg portions 10a, 10a and standing in the combustion furnace body 2. A combustion gas passage G and a flow path 7b are formed around the hook body 10 as shown in FIG. Note that the room temperature air supply device 5 described above includes a vent (not shown), an electric on-off valve (not shown) provided here, and an air passage 5a that communicates with a lower portion of the rooster L installed at the lower portion of the first combustion chamber 2a. It consists of and.

FIG. 5 is a cross-sectional view showing a related configuration of a hot water storage tank formed on the upper portion of the hook body 10.
In the figure, reference numeral 10b denotes a hot water storage tank (boiler) body, which includes a low temperature chamber 11 and a high temperature chamber 12, and the low temperature chamber 11 is in a subsidized state with the upper surface in the upper corner of the high temperature chamber 12 at the same level as the upper surface of the high temperature chamber 12. Is provided. The low temperature chamber 11 is connected to a water supply pipe 11a and a return water pipe 11b. The return water pipe 11b is a pipe for returning hot water or the like that has finished heat exchange to the hot water storage tank (boiler) 10b for reheating. In addition, a high temperature water delivery pipe 12 for heat exchange is connected to the high temperature chamber 12.

The low temperature water in the low greenhouse 11 flows through 11c connected to the lower part and reaches the leg 10a facing the combustion chamber. The low temperature water is heated to a high temperature while flowing up and down in the chamber 10a and is returned to the high temperature chamber 12. ing.

FIG. 6 is a cross-sectional view of the main part in the upper part of the biomass combustion apparatus 1 shown in FIG. 2, and the outer periphery of the hook body 10 is surrounded by the combustion gas passage G, and the combustion gas rising from the lower combustion chamber to the groove K Flows through the passage G as indicated by an arrow and is discharged to an exhaust pipe P communicating with the exhaust device 6 (not shown). Further, as described above, the secondary air and the tertiary air are heated by the passage G while flowing through the flow path 7b, and after flowing into the second combustion chamber 2b and the third combustion chamber 2c, together with the combustion gas. It flows through the passage G and finally follows a route to the exhaust pipe P.

FIG. 7 is a partial cross-sectional explanatory view showing an embodiment of the exhaust device 6. The exhaust device 6 includes a rotary blower 61 and an exhaust pipe 62 as suction means.
The exhaust pipe 62 has one end connected to the combustion furnace body 2 and one end connected to the other end of the first exhaust pipe 62a, and the first and second branch pipes 62b1. And a second exhaust pipe 62b having 62b2 and a third exhaust pipe 62c having an exhaust port connected to the first branch pipe 62b1 of the second exhaust pipe 62b. The third exhaust pipe 62c communicating with the chimney outside the figure has a first branch pipe 62c1 and a second branch pipe 62c2, and the first branch pipe 62c1 is the first branch pipe 62b1 of the second exhaust pipe 62b. The second branch pipe 62c2 is connected to the outlet of the rotary blower 61. A hill portion 63 having a substantially semicircular cross section is formed on the inner side surface of the second branch pipe 62c2 in order to promote the flow of the exhaust flow (combustion gas) flowing from the direction of the first branch pipe 62c1.

An intake port of the rotary blower 61 having a rotary blade portion inside is connected to the branch pipe 62b2, while an exhaust port of the rotary blower 61 is connected to the branch pipe 62c2.
A sliding type adjustment damper 61a for introducing outside air is provided at the connecting portion between the suction port 61a and the branch pipe 62b2, and the temperature of the combustion gas sucked into the rotary blower 61 is lowered. That is, the temperature of the combustion gas discharged from the combustion chamber reaches from 500 degrees Celsius to 1500 degrees Celsius, but in order to withstand this high temperature, it is necessary to form the rotating blade portion of the rotating blower 61 with expensive titanium or ceramic, Increase the total cost of the entire combustion system. For this reason, in order to adjust to about 300 degrees Celsius that the rotary blade portion made of a normal material such as a steel material other than titanium or ceramic can withstand, introduction of outside air by the adjustment damper is effective as described above.

In FIG. 7, reference numeral 64 denotes a cooling fan having a rotary blade portion coaxial with the rotary blower 61, which is rotated by the drive motor 65 to cool the rotary shaft and the like together.
The operation of the drive motor 65 is also controlled by the microcomputer as the control means 9 such as start, stop, and rotation speed.

  When the rotary blower 61 is operated, the combustion gas is sucked and guided to the first exhaust pipe 62a, and a part thereof is discharged to the outside through the first branch pipe 62b1 and the third exhaust pipe 62c of the second exhaust pipe 62b. However, after the other part of the combustion gas passes through the second branch pipe 62b2 of the second exhaust pipe 62b and the outside air is mixed by the adjustment damper 61a and the temperature is lowered, it enters the rotary blower 61 and is rotated by the rotary blade part. It is discharged to the branch pipe 62c2. The exhausted combustion gas reaches the constricted portion between the inner peripheral surface and the hill-like portion 63 formed to protrude from the inner peripheral surface of the branch pipe 62c2, but when the gas passes through this, the constricted state is eliminated and the combustion gas diffuses rapidly. In the vicinity of the stenosis, the pressure drops. In other words, the combustion gas that passes along the surface of the hill-like portion 63 moves at a higher distance in the same time than the combustion gas that passes through the opposing portion of the smooth inner peripheral surface. The pressure decreases in the vicinity of the periphery of the shaped portion 63, that is, in the vicinity of the junction of the first branch pipe 62c1 and the second branch pipe 62c2 in FIG. For this reason, the flow of the combustion gas from the first branch pipe 62c1 of the third exhaust pipe 62c is promoted.

FIG. 8 is an explanatory view showing a related configuration of the combustion chamber and the fuel supply means.
As shown, the soot supply means 8 includes a rotatable cylindrical biomass fuel stocker 81, a fuel input cylinder 82, and a drive device (not shown) for sequentially rotating the biomass fuel stocker 81. One open end of the fuel supply cylinder 82 protrudes into the combustion apparatus 1 and faces the first combustion chamber 2a, and a fuel receiving portion 82a is formed at the other open end so as to face the biomass fuel stocker internal space. is doing. The biomass fuel stocker 81 is installed together with the fuel injection cylinder 82 at a predetermined inclination angle, in this embodiment, an inclination angle of 45 degrees so that the fuel can slide down in the fuel injection cylinder 82.

9 is a schematic configuration diagram of the fuel supply means 8 shown in FIG. 8, FIG. 9 (a) is a longitudinal sectional view of the fuel supply means 8, and FIG. 9 (b) is a sectional view taken along the line CC in FIG. 9 (a). It is.
The fuel receiving portion 82a formed in the fuel charging cylinder 82 is formed by obliquely cutting the vicinity of the opening, and the biomass fuel held by a fuel catching hook (described later) is dropped and stored in the fuel receiving portion 82a. It will be. That is, in FIG. 9 (a), reference numerals 81a, 81a,... Denote biomass fuel catching hooks provided at equal intervals on the inner peripheral wall of the biomass fuel stocker 81, and these biomass fuel catching hooks 81a are as shown in FIG. In addition, the fuel is attached at a predetermined angle with respect to the radial line, that is, a preferable angle so that the fuel can be held with respect to the inner peripheral wall. The fuel catch hook 81a is provided at a position where the fuel falling from here can be received by the fuel receiving portion 82a. That is, when the fuel catching hook 81a comes almost directly above the fuel receiving portion 82a, the fuel that has been sandwiched between the inner peripheral wall and the fuel catching hook 81a falls to the fuel receiving portion 82a. Then, the fuel is sequentially supplied into the first fuel chamber 2a from the front end opening of the fuel input cylinder 82 facing the combustion chamber.

  In FIG. 9 (a), reference numeral 83 denotes a fuel loading detection means for detecting whether or not a predetermined amount of fuel is loaded in the fuel receiving portion 82a. The detection signal is processed by the control means 9, and based on this. The rotation of the biomass fuel stocker 81 is controlled. Instead of such fuel loading detection means, a simple current switch that operates by weight can be used. When the weight in the fuel receiving part 82a reaches a predetermined value, the switch is turned off, the rotation of the biomass fuel stocker 81 is stopped, and the fuel supply is interrupted.

The operation from ignition to extinguishing of the biomass combustion apparatus 1 according to the above embodiment is as follows.
A: When standby is selected in the controller of the control means 9, the apparatus power supply is turned on. First, the fuel supply means 8 operates to supply fuel to the first combustion chamber.
B: In conjunction with the fuel supply, the electric on-off valve of the room temperature air supply device 5 has a predetermined opening, and at the same time the rotary blower starts in the exhaust device 6, so the room temperature air supply device 5 and the heated air supply device 7 and the exhaust gas are exhausted. An air flow is formed with the device 6.
C: When the fuel is ignited at the firing port 4 in a state where the air flow is formed in the above-described process, the biomass fuel easily burns up and starts to burn because sufficient oxygen is supplied by the air flow.
D: During combustion, the temperature in the combustion chamber corresponding to pre-selected high fire, medium fire, low fire, etc. is measured and detected, and based on this data, the fuel supply means 8 and the room temperature air supply device 5 are instructed by the control means 9. The exhaust device 6 operates in a harmonious manner, and combustion corresponding to a predetermined input is executed. Note that, by detecting the hot water temperature in the hot water storage tank, the fuel supply means 8, the room temperature air supply device 5, and the exhaust device 6 operate as necessary depending on the selected hot water temperature.
E: When fire extinguishing is input, the electric on-off valve of the room temperature air supply device 5 is closed, and at the same time, the rotary blower of the exhaust device 6 is stopped, the supply of oxygen to the combustion chamber is shut off, and combustion stops. Further, in the event of a power failure or the like, fire extinguishing is automatically selected by the control means, and the same procedure as described above is performed to stop combustion. Even when the rotary blower of the exhaust device 6 is stopped, the exhaust gas passage by the branch pipes 62b1 and 62c1 is always open as shown in FIG. 7, so that the combustion gas in the combustion chamber is naturally diffused.

1. . . . . . . . . 1. Biomass combustion device . . . . . . . . 2. Combustion furnace body . . . . . . . . 3. Main body of the hook . . . . . . . . 4. Sprinkle spout . . . . . . . . 5. Room temperature air supply device . . . . . . . . 6. Exhaust device . . . . . . . . 7. Heated air supply device . . . . . . . . 8. Fuel supply device . . . . . . . . Control means

Claims (6)

A combustion apparatus for burning other biomass material, a combustion furnace body having a plurality of combustion chambers, a hot water tank, an intake port, etc., and a pot body provided at the upper part of the combustion furnace body, A fuel outlet provided in the lower part of the combustion furnace body, an exhaust device that communicates with the combustion furnace body and sucks exhaust gas and exhausts it to the outside, fuel supply means to the combustion chamber, and the combustion chamber body to the fuel chamber Based on a normal temperature air supply device that supplies air from the outside, a heated air supply device that supplies heated air to the fuel chamber by a suction operation of the exhaust device, a supply operation of the fuel supply means, an operation of the exhaust device, and the like A biomass combustion apparatus comprising: control means for controlling a normal temperature air amount and a heated air amount, a hot water temperature of a hot water storage tank, and the like. The combustion apparatus according to claim 1, wherein the combustion chamber is located at a top of the first combustion chamber and a first combustion chamber for burning the biomass material while supplying primary air as normal temperature external air from the normal temperature air supply device. A second combustion chamber for supplying secondary air as heated air from the heated air supply device to the combustion gas from the first combustion chamber to raise the temperature of the combustion gas; and an upper portion of the second combustion chamber. A biomass combustion apparatus comprising: a third combustion chamber for supplying tertiary air as heated air from a heated air supply device to combustion gas from a second combustion chamber to further raise the temperature of the combustion gas. 3. The combustion apparatus according to claim 2, wherein the room temperature air supply device includes an air opening / closing valve that is driven and controlled by a control means, and the heating air supply device includes a first flow path communicating with the air intake port and the first flow. A second flow path provided on the inner wall of the combustion furnace main body, and a secondary air outlet and a third air outlet formed in the second flow path and facing the second and third combustion chambers. A biomass combustion apparatus characterized by comprising: 4. The combustion apparatus according to claim 3, wherein the first flow path is heated by combustion exhaust gas flowing from the combustion chamber to the exhaust apparatus, and the second flow path is heated by the combustion chamber. Biomass combustion device. 5. The biomass combustion apparatus according to claim 1, wherein the exhaust device includes suction means and an exhaust pipe, and the exhaust pipe has one end connected to the combustion furnace main body, the first exhaust pipe, and the first exhaust pipe. A second exhaust pipe having one end connected to the other end of the exhaust pipe and having first and second branch pipes, and a third exhaust pipe having an exhaust port connected to the first branch pipe of the second exhaust pipe The suction means includes a rotating blade portion and a cooling fan for the rotating blade portion, the suction port of the rotating blade portion is connected to the second branch pipe of the second exhaust pipe, and the discharge port of the rotating blade portion Is connected to the third exhaust pipe, and is a biomass combustion apparatus. 6. The biomass combustion apparatus according to claim 1, wherein the soot supply means includes a rotating biomass fuel stocker, a fuel input cylinder, and a driving device for sequentially rotating the biomass fuel stocker, A biomass fuel catch hook is provided on the peripheral wall, and one end of the fuel injection cylinder faces the combustion chamber, and a fuel receiving portion is formed on the other opening end to face the internal space of the biomass fuel stocker. The biomass fuel captured by the biomass fuel capturing hook along with the rotation is dropped and stored in the fuel receiving portion, and then slides into the fuel chamber sequentially from the opening end of the fuel input cylinder facing the combustion chamber. Biomass combustion device.

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