JP2015175524A - Rice straw combustion apparatus, stove with fuel of rice straw and boiler - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rice straw combustion apparatus for igniting rice straw roll as it is, a stove with fuel of rice straw and a boiler.SOLUTION: A rice straw combustion apparatus 10 comprises a case formed by iron plates. The side wall surfaces of the rice straw combustion apparatus 10 are provided with suction ports 16 for taking surrounding atmosphere 14 into a rice straw combustion chamber 12. An ignition part 24 is installed below a rice straw supporting part 20, a discharging port 28 for discharging indoor air 26 of the rice straw combustion chamber 12 outside is arranged above the rice straw combustion chamber 12. Firewood 30 is put into the ignition part 24 and ignited to fire rice straw roll 22 supported above the ignition part 24 by the rice straw supporting part 20. When the rice straw roll 22 starts to ignite, indoor air 26 in the rice straw combustion chamber 12 ascends, the surrounding air 14 flows from suction port 16 (16a, 16b, 16c, 16d) into the rice straw combustion chamber 12 to ignite the rice straw roll 22.

Description

  The present invention relates to a rice straw combustion apparatus for burning rice straw, and a stove and boiler using rice straw as fuel.

  In recent years, it has been studied to effectively use rice straw without burning it. Conventionally, an apparatus that can use rice straw as fuel has been provided (for example, Patent Document 1).

JP 2011-214767 A

  The swirl combustion device of Patent Document 1 is a device that burns shredded rice straw on a swirl airflow, and can be effectively used as a safe continuous use heat source for agricultural facilities and the like.

  However, shredded rice straw has the problem of increasing operational costs. Therefore, there has been a demand for an apparatus for burning rice straw (rice straw roll) as it is, which can reduce fuel costs.

  The present invention solves the above-described problems, and an object of the present invention is to provide a rice straw combustion apparatus for burning rice straw (rice straw roll) as it is, and a stove and boiler using rice straw as fuel.

The rice straw combustion apparatus of the present invention includes a rice straw combustion chamber into which a rice straw roll is introduced, a rice straw support portion that supports the rice straw roll in the indoor space of the rice straw combustion chamber, and a rice straw roll of the rice straw support portion. On the side of the housing that forms the rice straw combustion chamber, and has an ignition part that ignites the fire, an intake port for taking outside air into the rice straw combustion chamber, and an exhaust port for discharging the indoor air of the rice straw combustion chamber to the outside An intake port is formed, an ignition part is provided below the rice straw support part, and an exhaust port is provided above the rice straw combustion chamber.
The rice straw support portion is for placing a rice straw roll, and supports a cylindrical support base formed in a circular shape or a substantially circular shape to support the vicinity of the outer edge of the rice straw roll and the vicinity of the center of the rice straw roll. It is comprised from the cylindrical support stand formed circularly or substantially circular.

  The stove using the rice straw of the present invention as a fuel comprises the rice straw combustion apparatus of the present invention. Moreover, the heat radiating part provided with the column-shaped protrusion part is provided on the surface of the ceiling board of the rice straw combustion apparatus.

  The boiler using the rice straw of the present invention as a fuel is provided with a hot water supply tank on the side surface of the casing of the rice straw combustion apparatus of the present invention, and for heat exchange to circulate the heat inside the rice straw combustion apparatus in the hot water supply tank. A pipe is provided.

Since the rice straw combustion apparatus of the present invention burns rice straw (rice straw roll) as it is, it is possible to keep fuel costs low and to effectively use rice straw as industrial waste. It can be done.
Moreover, the rice straw combustion apparatus of this invention can be effectively utilized as a safe continuous use heat source (for example, a boiler of a greenhouse for cultivation of agricultural products) for a stove or an agricultural facility.

1 is a front view of a rice straw combustion apparatus of the present invention and a stove using rice straw as fuel. It is a figure showing the structure of the rice straw combustion apparatus of this invention. It is a figure showing the rice straw support part of one rice straw combustion apparatus of this invention. It is a figure showing the other rice straw support part of the rice straw combustion apparatus of this invention. It is a figure showing the thermal radiation part of the stove which uses the rice straw of this invention as a fuel. It is a figure showing the hot water supply tank of the boiler which uses the rice straw of this invention as a fuel.

  The present invention realizes using rice straw rolls as fuel as they are.

The rice straw combustion apparatus of the present invention and the stove using the rice straw of the present invention as fuel will be described with reference to the drawings. FIG. 1 is a front view of a rice straw combustion apparatus of the present invention and a stove using rice straw as fuel. FIG. 2 is a diagram showing the structure of the rice straw combustion apparatus of the present invention. 3A and 3B are diagrams showing a rice straw support portion of the rice straw combustion apparatus according to the present invention. FIG. 3A is a front view, and FIG. 3B is a cross-sectional view taken along line AA in FIG. FIG. 4 is a view showing another rice straw support portion of the rice straw combustion apparatus of the present invention, and is a cross-sectional view taken along line BB in FIG.
Moreover, in this application, rice straw is a rice straw roll (what is called a jade ball), and the rice straw of paddy rice is collected and rolled.

The rice straw combustion apparatus 10 of the present invention comprises a casing formed of an iron plate, and the internal space of the casing serves as a rice straw combustion chamber 12. All side wall surfaces of the rice straw combustion apparatus 10 are provided with intake ports 16 for taking outside air 14 into the rice straw combustion chamber 12. In FIG. 1 and FIG. 2, the rice straw roll 22 introduced from the open / close door 18 is supported in the space of the rice straw combustion chamber 12 by the rice straw support portion 20. The intake port 16a for taking outside air 14 toward the rice straw roll 22, the intake ports 16b and 16c for taking outside air 14 toward the rice straw support portion 20, and the rice straw roll 22 of the rice straw support portion 20 are set to fire. An intake port 16d for taking in the outside air 14 toward the ignition part 24 to be attached is provided.
The ignition part 24 is a space provided below the rice straw support part 20. Further, an exhaust port 28 (chimney) for discharging the indoor air 26 of the rice straw combustion chamber 12 to the outside is provided above the rice straw combustion chamber 12. Put firewood 30 in the ignition part 24 and ignite it. When the rice straw roll 22 supported above the ignition unit 24 is ignited and the rice straw roll 22 starts to burn, the indoor air 26 in the rice straw combustion chamber 12 rises above the rice straw combustion chamber 12 and the exhaust port 28 is discharged. Further, when the indoor air 26 rises, the outside air 14 flows into the rice straw combustion chamber 12 from the intake port 16 (16a, 16b, 16c, 16d), and the rice straw roll 22 is burned.
The intake port 16 is provided with an opening / closing plate (intake air amount adjusting device) for adjusting the amount of outside air 14 taken into the rice straw combustion chamber 12 (not shown).

The rice straw support unit 20 supports the rice straw roll 22 in the indoor space of the rice straw combustion chamber 12. 1 and 2, the rice straw roll 22 is placed on a rice straw support 20 a (rice straw support 20) provided above the ignition part 24.
The rice straw support table 20a includes a circular or substantially circular cylindrical support table 36b that supports the vicinity of the outer edge of the rice straw roll 22, and a circular or substantially circular cylinder that supports the vicinity of the center of the rice straw roll 22. It is comprised from the shape-like support stand 36a (FIG. 3). That is, the rice straw support base 20a is formed by using two cylindrical support bases 36a and 36b having different diameters to form a double ring, and the rice straw roll 22 is placed on the ring. (FIGS. 1 to 4).
The small-diameter support base 36 a is connected to an intake port 16 b provided on each wall surface of the rice straw combustion apparatus 10, and is provided in the indoor space of the rice straw combustion chamber 12 by four conduits 34 a for taking outside air 14 into the rice straw combustion chamber 12. It is supported by. The large diameter support base 36b is connected to an intake port 16c provided on each wall surface of the rice straw combustion apparatus 10 and is introduced into the indoor space of the rice straw combustion chamber 12 by a plurality of conduits 34b for taking outside air 14 into the rice straw combustion chamber 12. It is supported.
The rice straw support 20a is formed in a circular shape or a polygonal shape (substantially circular shape) using an iron plate provided with a large number of holes 32 (FIG. 3).
The rice straw roll 22 is placed vertically (standing) on the rice straw support 20a.

The other rice straw support portion 20b supports the rice straw roll 22 so that it does not fall down during combustion, and burns it while standing on the rice straw support stand 20a. A partition plate 38 (38a, 38b, 38c) that partitions the indoor space of the rice straw combustion chamber 12 so as to surround the outer periphery of the rice straw roll 22 (FIGS. 1 and 4). 1 and 4, the partition plate 38 is provided so as to support the rice straw roll 22 from front, rear, left and right. The partition plate 38a is provided at the front position of the rice straw roll 22 (the back surface of the door 18), the partition plate 38b is provided at the left and right positions of the rice straw roll 22, and the partition plate 38c is provided at the rear position of the rice straw roll 22. It has been.
By providing the partition plate 38, the rice straw roll 22 can be kept from falling down during combustion, and the rice straw roll 22 can be completely burned. As the partition plate 38, an iron plate provided with a large number of holes 32 shown in FIG. 3A is used (not shown) in the same manner as the rice straw support 20a (or 36a, 36b).
Compost (ash) of the rice straw roll 22 after combustion can be discharged to the outside from the take-out port 40. The open / close door 18 is provided with a window (not shown) through which the inside of the rice straw combustion chamber 12 can be visually observed.

  As described above, according to the rice straw combustion apparatus of the present invention, rice straw (rice straw roll) can be burned as it is, so that the cost of fuelization can be kept low. In addition, rice straw, which is industrial waste, can be used effectively.

Next, the stove using the rice straw of the present invention as a fuel using the rice straw combustion apparatus will be described. FIG. 5 is a view showing a heat radiating portion of a stove using rice straw as a fuel according to the present invention. FIG. 5 (a) is a plan view of the heat radiating portion, and FIG. It is a longitudinal cross-sectional view of a protrusion part).
The rice straw combustion apparatus 10 described above can also be used as a stove 42 using rice straw as fuel.
Moreover, you may provide the thermal radiation part 46 which provided the cylindrical protrusion part 44 in the surface of the ceiling board 10a of the rice straw combustion apparatus 10 (FIG. 1, FIG. 5). By providing the protrusion 44, the heat radiation area can be expanded, and the heat of the rice straw combustion chamber 12 of the rice straw combustion apparatus 10 can be used effectively. The protrusion 44 in FIG. 5 is formed hollow (FIG. 5B).
In addition, the said rice straw combustion apparatus 10 can also be utilized as a panel heater.

Next, the boiler using the rice straw of the present invention as a fuel using the rice straw combustion apparatus will be described. FIG. 6 is a view showing a hot water supply tank of a boiler that uses rice straw as fuel of the present invention, FIG. 6 (a) is a view showing a hot water supply tank as a heat exchange device, and FIG. 6 (b) is a use state of the present invention. The figure and figure (c) are figures showing embodiment in the case of making hot water of a hot-water supply tank into high temperature. The boiler of a present Example is a boiler of the greenhouse for cultivation of agricultural products.
The boiler 48 using rice straw as fuel of the present invention includes a hot water supply tank 50 as a heat exchange device on the side surface of the casing of the rice straw combustion device 10, and the interior of the rice straw combustion device 10 in the hot water supply tank 50. The heat exchange pipe 52 for circulating the heat is provided.
In the hot water supply tank 50, one end of the heat exchange pipe 52 is attached to the upper part of the side surface of the rice straw combustion apparatus 10, and the other end is provided in the lower part of the side surface. Since the indoor air 26 of the rice straw combustion apparatus 10 flows upward from below, the indoor air 26 is introduced into the heat exchanging pipe 52 from the opening of the heat exchanging pipe 52 provided at the lower part of the side surface and The heat exchange pipe 52 provided in the upper part can be led out into the interior of the rice straw combustion apparatus 10 from the opening. By circulating indoor heat (indoor air 26) in the hot water supply tank 50 through the heat exchange pipe 52, the heat obtained by burning the rice straw roll 22 (fuel) is transferred to the water, and the hot water is It can be changed (FIG. 6A).
The hot water 53 in the hot water supply tank 50 is discharged from the outlet 50 a of the hot water supply tank 50 and is circulated in the greenhouse 58 for cultivation of agricultural products using the pump 54 and the hose 56, thereby heating the greenhouse 58. be able to. The radiated hot water 59 circulating through the greenhouse 58 returns to the hot water supply tank 50 from the inlet 50b of the hot water supply tank.

  The rice straw combustion apparatus 10 provided with the hot water supply tank 50 is provided with a hot water inlet 60a and a hot water outlet 60b. A hot water circulation conduit 62 provided along the wall surface of the rice straw combustion chamber 12 is connected to the hot water inlet 60a and the hot water outlet 60b. Hot water 53 in the hot water supply tank 50 is introduced from the hot water inlet 60a, the heat of the rice straw combustion chamber 12 is transmitted to the hot water 53 through the hot water circulation conduit 62, and is sent from the hot water outlet 60b. Hot water 64 that is hotter than the hot water in the tank 50 can be sent to the greenhouse 58.

DESCRIPTION OF SYMBOLS 10 Rice straw combustion apparatus 10a Ceiling board 12 Rice straw combustion chamber 14 Outside air 16a, 16b, 16c, 16d Inlet 20 Rice straw support part 22 Rice straw roll 24 Ignition part 26 Indoor air 28 Outlet 20a, 36a, 36b Rice straw support Base 20b, 38a, 38b, 38c Partition plate 42 Stove 44 Protruding part 46 Heat radiation part 48 Boiler 50 Hot water supply tank 52 Heat exchange pipe

Claims (5)

A rice straw combustion chamber for introducing the rice straw roll, a rice straw support portion for supporting the rice straw roll in the interior space of the rice straw combustion chamber, an ignition portion for igniting the rice straw roll of the rice straw support portion, Supports rice straw with an intake port for taking outside air into the straw combustion chamber and an exhaust port for exhausting the indoor air of the rice straw combustion chamber to the outside. A rice straw combustion apparatus characterized in that an ignition part is provided below the part and an exhaust port is provided above the rice straw combustion chamber. The rice straw support part is for placing a rice straw roll, and has a circular or substantially circular cylindrical support base for supporting the vicinity of the outer edge of the rice straw roll, and a circular support for supporting the vicinity of the center of the rice straw roll or The rice straw combustion apparatus according to claim 1, comprising a cylindrical support base formed in a substantially circular shape. A stove using rice straw as fuel, comprising the rice straw combustion apparatus according to claim 1. 4. A stove using rice straw as a fuel according to claim 3, wherein a heat radiating portion having a columnar protrusion is provided on the surface of the ceiling plate of the rice straw combustion apparatus. A hot water supply tank is provided on a side surface of the casing of the rice straw combustion apparatus according to claim 1 or 2, and a heat exchange pipe for circulating heat in the room of the rice straw combustion apparatus is provided in the hot water supply tank. A boiler that uses rice straw as fuel.

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