JP2017166726A - Incinerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized and simply configured incinerator capable of completely igniting incomplete combustion gas (unburnt gas) when an object to be ignited is ignited in which a less amount of incineration residue is left.SOLUTION: An incinerator comprises a primary combustion chamber; a storing chamber; a secondary combustion chamber; a chimney part; a flue part communicating a lower part of the primary combustion chamber with a lower part of the secondary combustion chamber; a heating part for heating an inside part of the secondary combustion chamber; an air supplying part for supplying air to the secondary combustion chamber; a fire spread blocking part for preventing flowing-in of the object to be ignited fed from the storing chamber into the primary combustion chamber to the flue part; and an incomplete combustion gas recirculation passage where an incomplete combustion gas inlet port is positioned near the upper part in the primary combustion chamber, a ventilation passage is formed from the incomplete combustion gas inlet port along an inner wall of the primary combustion chamber and communicated with the flue part.SELECTED DRAWING: Figure 2

Description

  The present invention relates to an incinerator.

An incinerator having a primary combustion chamber and a secondary combustion chamber is known (see, for example, Patent Document 1).
An incinerator equipped with a rooster (grate) is known (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 11-51367 JP-A-53-48370

  However, in a general small incinerator, for example, when a combusted material such as vegetation or paper-based organic matter is burned, a relatively large amount of incineration residue accumulates in the lower part of the combustion chamber. Residues generated by this incineration need to be reported to the relevant government offices and transported to an authorized facility for processing.

  Further, in order to prevent fuming or harmful gas caused by incomplete combustion from flowing out of the incinerator, for example, as shown in Patent Document 1, secondary combustion that completely burns incomplete combustion gas is performed. Although an incinerator with a chamber is known, it has a complicated configuration and is expensive.

The incinerator of the present invention has at least the following configuration.
A primary combustion chamber provided with a cylindrical furnace wall formed with a rooster (grate) at the lower part of the room and formed of a refractory material;
A storage chamber provided in an upper portion of the primary combustion chamber and capable of charging a combustible into the primary combustion chamber;
A secondary combustion chamber provided in parallel with the primary combustion chamber and provided with a cylindrical furnace wall formed of a refractory material;
A chimney provided in the upper part of the secondary combustion chamber;
A flue section communicating with a lower portion of the primary combustion chamber and a lower portion of the secondary combustion chamber;
A heating unit that heats the interior of the secondary combustion chamber and completely burns incomplete combustion gas introduced from the primary combustion chamber into the secondary combustion chamber through the flue portion;
An incinerator having an air supply unit for supplying air to the secondary combustion chamber,
A projecting portion projecting from the primary combustion chamber side intake port of the flue portion toward the indoor side of the primary combustion chamber, and the combusted material introduced into the primary combustion chamber from the storage chamber by the projecting portion; A fire spread block to prevent inflow into the flue,
An incomplete combustion gas intake port is located near the upper portion of the primary combustion chamber, and a ventilation path is formed along the inner wall of the primary combustion chamber from the incomplete combustion gas intake port, and communicates with the flue portion. And an incomplete combustion gas recirculation path.

  ADVANTAGE OF THE INVENTION According to this invention, when incinerating a to-be-combusted material, the incinerator of a small and simple structure which can burn incomplete combustion gas (unburned gas) completely, has few residues, can be provided.

The conceptual diagram of the incinerator which concerns on embodiment of this invention. Sectional drawing which shows an example of the incinerator which concerns on embodiment of this invention. The partial cross section perspective view for demonstrating an example of the incinerator which concerns on embodiment of this invention. The top view for demonstrating an example of the incinerator concerning the embodiment of the present invention. Sectional drawing along the AA line of the incinerator shown in FIG. The conceptual diagram for demonstrating the partition part between the primary combustion chamber of the incinerator which concerns on embodiment of this invention, and a storage chamber. The figure for demonstrating an example of the secondary combustion chamber of the incinerator which concerns on embodiment of this invention, (a) is sectional drawing of a secondary combustion chamber, (b) is the BB line of Fig.7 (a). FIG. The figure for demonstrating an example of the temperature adjustment part (temperature adjustment board) of an incinerator, (a) is a top view near a secondary combustion chamber, (b) is a conceptual diagram which shows the case where a temperature adjustment board is an open state, (C) is a conceptual diagram which shows the case where a temperature control board is a closed state.

  The incinerator according to the embodiment of the present invention is provided with a roastol (grate) in the lower part of the room, a primary combustion chamber provided with a cylindrical furnace wall formed of a refractory material, and an upper part of the primary combustion chamber, A storage chamber in which combustibles can be introduced into the primary combustion chamber, a secondary combustion chamber provided in parallel with the primary combustion chamber and having a cylindrical furnace wall formed of a refractory material, and an upper portion of the secondary combustion chamber The chimney provided in the main combustion chamber, the flue portion communicating with the lower portion of the primary combustion chamber and the lower portion of the secondary combustion chamber, and the interior of the secondary combustion chamber are heated, and the secondary passage from the primary combustion chamber through the flue portion A heating unit that completely burns incomplete combustion gas introduced into the combustion chamber; and an air supply unit that supplies air to the secondary combustion chamber. Further, the incinerator includes a protruding portion that protrudes from the primary combustion chamber side intake port of the flue portion toward the indoor side of the primary combustion chamber, and is combusted by the protruding portion that is introduced from the storage chamber into the primary combustion chamber. A fire spread block that prevents inflow of objects into the flue and an inlet for incomplete combustion gas are located near the upper part of the primary combustion chamber and extend along the inner wall of the primary combustion chamber from the incomplete combustion gas inlet A ventilation path is formed, and an incomplete combustion gas recirculation path communicating with the flue portion is included.

  Hereinafter, an example of an incinerator according to an embodiment of the present invention will be described with reference to the drawings. The embodiment of the present invention includes the contents shown in the drawings, but is not limited to this. In the following description of each drawing, the same parts as those already described are denoted by the same reference numerals, and a part of the overlapping description is omitted.

  As shown in FIGS. 1, 2, 3, and 4, the incinerator 10 according to the embodiment of the present invention includes a primary combustion chamber 1 (No. 1 furnace), a secondary combustion chamber 2 (No. 2 furnace), It has a storage chamber 3 (storage), a flue portion 4 that communicates the primary combustion chamber 1 and the secondary combustion chamber 2, a chimney portion 21, and the like. In the incinerator 10, a frame 101 is formed of a member such as a pipe, and a base portion 102 made of a heat resistant material such as heat resistant concrete is formed. A cylindrical primary combustion chamber 1 and a cylindrical secondary combustion chamber are arranged side by side on the base portion 102.

  The primary combustion chamber 1 has a cylindrical furnace wall 1a formed of a refractory material. A rooster 11 (grate) is disposed in the lower part of the primary combustion chamber 1. A management port 19 and an ash outlet 18 are formed on the front side of the primary combustion chamber 1, and doors 191 and 181 are formed, respectively. The management port 19 and the ash outlet 18 function as an intake port to the primary combustion chamber 1 from the outside, and are configured such that the intake air amount can be adjusted by opening / closing and opening amounts of the doors 191 and 181. A storage chamber 3 (storage) is provided above the primary combustion chamber 1.

  The storage chamber 3 is provided with a door 301 that can be opened and closed on the front side. Between the storage chamber 3 and the primary combustion chamber 1, a bottom plate 30 that can be opened and closed as necessary is provided. The storage chamber 3 is configured to temporarily store the combustible B. When the bottom plate 30 is opened with the door 301 closed, the combustible B can be introduced from the storage chamber 3 into the primary combustion chamber 1 while being shut off from outside air.

The secondary combustion chamber 2 has a cylindrical furnace wall 2a that is juxtaposed to the primary combustion chamber 1 and formed of a refractory material. In the present embodiment, the secondary combustion is formed in a cylindrical shape. A chimney 21 is provided in the upper part of the secondary combustion chamber 2. A management port 29 and a door 291 are provided on the back side of the secondary combustion chamber 2. Moreover, the secondary combustion chamber 2 and the primary combustion chamber 1 are comprised so that it may communicate with the flue part 4 provided in each lower part.
The secondary combustion chamber 2 is provided with an air supply pipe 23 as an air supply unit 6 for supplying air into the chamber. The air supply pipe 23 is formed in a cylindrical shape, and stands up from the bottom of the secondary combustion chamber 2 toward the chimney 21. An air passage 61 is formed in the base portion 102 at the bottom of the secondary combustion chamber 2, and a blower 6 </ b> A (blower) provided as an air supply source provided outside the secondary combustion chamber 2 communicates with the air supply pipe 23. It has a structure. Specifically, the ventilation path 61 is constituted by a vertical hole 61a and a horizontal hole 61b, and the air supply pipe 23 is disposed on the vertical hole 61a.
A plurality of holes 23a are formed near the lower portion of the air supply pipe 23, a plurality of holes 23b are formed near the center, and a plurality of holes 23c are formed near the upper portion. Air is blown into the secondary combustion chamber 2 from the holes 23a, 23b, and 23c by the blower 6A.

A temperature detection unit 51 such as a temperature sensor is provided in the secondary combustion chamber 2 to detect the temperature in the secondary combustion chamber 2.
A heating unit 5 such as a burner is provided in the secondary combustion chamber 2 and heats the inside of the secondary combustion chamber 2.
The control unit 52 drives and controls the heating unit 5 based on a signal that is input from the temperature detection unit 51 and indicates the indoor temperature (furnace temperature) of the secondary combustion chamber 2. In the present embodiment, the control unit 52 is set so that the temperature in the secondary combustion chamber 2 is about 800 ° C. to 850 ° C. during operation of the incinerator. The furnace temperature in the secondary combustion chamber can be appropriately set according to the combustion state, the type of the combusted material, and the like.
That is, when the interior of the secondary combustion chamber 2 is brought into a high temperature state (for example, about 800 ° C. to 850 ° C.) by the heating unit 5, the secondary combustion chamber 2 is introduced from the primary combustion chamber 1 into the secondary combustion chamber 2 through the flue portion 4. Incomplete combustion gas can be burned completely.

  In addition, a heat insulating material 27 is provided in the secondary combustion chamber 2 so as to surround the furnace wall 2a, and the space between the secondary combustion chamber 2 and the outside is in a heat insulating state. Further, an intermediate partition plate 105 is provided between the secondary combustion chamber 2 and the primary combustion chamber 1, and the primary combustion chamber 1 and the secondary combustion chamber 2 are insulative.

  A temperature adjustment unit 25 is provided in the chimney 21 at the top of the secondary combustion chamber 2. A specific configuration of the temperature adjustment unit 25 will be described later.

The lower portions of the primary combustion chamber 1 and the secondary combustion chamber 2 have a structure in which they are communicated by a flue portion 4. In the primary combustion chamber side intake port 4a of the flue section 4, a fire spread blocking section 7 is provided. The fire spread blocking unit 7 includes a protruding portion 7 a that protrudes from the primary combustion chamber side intake port 4 a of the flue portion 4 toward the indoor side of the primary combustion chamber 1. The fire spread blocking unit 7 can prevent the inflow of the combustible B introduced into the primary combustion chamber 1 from the storage chamber 3 into the flue portion 4 by the protrusion 7a.
Moreover, in this embodiment, the protrusion part 7a which protruded from the flue part 4 to the indoor side of the primary combustion chamber 1 is formed in the cylinder shape, and has the opening part 7c in the side surface. The opening 7c is configured to function as an intake port of the flue section 4, and has a structure in which the intake amount of the flue section 4 is large.
In addition, an inclined portion 102k is formed in the base portion 102 so that the flow passage cross-sectional area of the secondary combustion chamber side exhaust port 4e is smaller than that of the primary combustion chamber side intake ports 4a, 4b, 4c.

In the incomplete combustion gas recirculation path 8 (uncombusted gas recirculation path), the incomplete combustion gas intake port 8a is located near the upper portion of the primary combustion chamber 1, and the primary combustion is performed from the incomplete combustion gas intake port 8a. An air passage 8t is formed along the inner wall (secondary combustion chamber side) of the chamber 1, and has a structure communicating with the flue section 4. Specifically, an output port 8 e of the incomplete combustion gas recirculation path 8 is formed in the upper portion 4 t of the cylindrical portion of the flue portion 4. In the present embodiment, an output port 8 e of the incomplete combustion gas recirculation path 8 is formed on the upper portion of the protruding portion 7 a of the fire spread blocking portion 7.
During operation of the incinerator, the incomplete combustion gas in the upper part of the primary combustion chamber 1 flows to the flue section 4 via the incomplete combustion gas intake port 8a, the air passage 8t, and the output port 8e.

  The incomplete combustion gas recirculation pipe 9 (duct recirculation pipe) has an air passage that communicates with the flue portion 4 from the storage chamber 3 through the outside of the primary combustion chamber 1. In the present embodiment, the incomplete combustion gas recirculation pipe 9 has an intake port 9 a formed on the back side of the storage chamber 3, and an output port 9 e formed on the upper portion 4 t of the cylindrical portion of the flue section 4. During operation of the incinerator, the incomplete combustion gas in the storage chamber 3 flows to the flue section 4 through the intake port 9a, the communication path, and the output port 9e of the incomplete combustion gas recirculation pipe 9.

<Lostre 11>
As shown in FIG. 5, a rooster 11 is provided in the lower part of the primary combustion chamber 1. Specifically, a concave portion 102U is formed in the base portion 102 in the cylindrical primary combustion chamber 1, and an upper rooster 11A (11) and a lower rooster 11B (11) are disposed in the concave portion 102U. The concave portion 102U also functions as the flue portion 4. In addition, as shown in FIG. 2, the upper rooster 11A (11) and the lower rooster 11B (11) are connected to the flue section 4, and the upper rooster 11A (11) and the lower rooster 11B (11) The air inlet 4b of the flue section 4 is provided in the rooster 11B (11). In the present embodiment, a space communicating with the flue section 4 is formed below the lower rooster 11B (11), and the air inlet 4c of the flue section 4 is formed below the lower rooster 11B (11). Is provided.

In this embodiment, since the gap is formed narrower in the lower rooster 11B (11) than in the upper rooster 11A (11), for example, the combustible that has become smaller during combustion is removed from the upper rooster 11A (11). It falls to the lower rooster 11B (11) and burns efficiently in a state where it is easy to touch the air on the lower rooster 11B (11), and becomes completely ash. In the present embodiment, the gap between the plurality of rod-shaped portions of the upper rooster 11A (11) is about 50 mm, and the gap between the plurality of rod-shaped portions of the lower rooster 11B (11) is about 20 mm.
The rooster may have an arbitrary shape, for example, a lattice shape, and a plurality of rod-shaped portions are arranged at predetermined intervals as shown in FIGS. May be. In addition, a rooster may be arranged on the member 11Ba installed in the recess 102U.
In addition, in this recessed part 102U, since incineration ash accumulates in the lower part of lower rooster 11B (11), it is preferable to remove incineration ash from ash outlet 1e (refer to Drawing 2) regularly or at a predetermined timing.

<Bottom plate of storage chamber 3 (storage)>
As described above, the storage chamber 3 is provided on the primary combustion chamber 1. The storage chamber 3 is provided with an open / close door (not shown) on the front side, and is configured to be able to temporarily store a combustible B such as a piece of wood, a branch, or paper in the storage chamber 3. The bottom plate 30 of the storage chamber 3 (the top plate of the primary combustion chamber) is configured to be openable and closable as required.

As shown in FIG. 6, in this embodiment, the bottom plate 30 of the storage chamber 3 has two bottom plates 31, 32, and the vicinity of the end portions of the bottom plates 31, 32 can be freely rotated by support shafts 311, 321. It is pivotally supported. When the combustible B is stored in the storage chamber 3, the bottom plates 31 and 32 are closed as shown in FIG. 6 by a lock mechanism (not shown). When the combustible B is introduced from the storage chamber 3 into the primary combustion chamber 1, the lock mechanism is released, the bottom plates 31 and 32 are opened, and the combustible is input from the storage chamber 3 to the primary combustion chamber 1. Is done.
Further, the incinerator has a space in the upper part of the primary combustion chamber 1 even when the combustible B is put into the primary combustion chamber 1, and the intake port 8a of the incomplete combustion gas recirculation path 8 is blocked. The air passage of the flue portion 4 is secured by the protruding portion 7a of the fire spread blocking portion 7 provided on the air inlet side of the flue portion 4 without escaping.

  After the combustible B is introduced, for example, by rotating a handle (not shown) provided on the bottom plates 31 and 32, the bottom plates 31 and 32 are closed as shown in FIG. To do.

  In addition, even when the bottom plates 31 and 32 provided between the storage chamber 3 and the primary combustion chamber 1 are closed, if there is a gap, incomplete combustion gas (unburned gas) generated when the incinerator is operating. ) May flow into the storage chamber 3 from the primary combustion chamber 1. Further, when the bottom plates 31 and 32 are opened when the combustible material is introduced from the storage chamber 3 to the primary combustion chamber 1 while being blocked from the outside air, the storage chamber 3 is incompletely transferred to the primary combustion chamber 1. Combustion gas may enter. In this embodiment, an incomplete combustion gas recirculation pipe 9 that communicates between the storage chamber 3 and the flue section 4 is provided, and the incomplete combustion gas in the storage chamber 3 is generated by the rising airflow in the secondary combustion chamber 2. Flows into the flue section 4 from the inlet 9a of the incomplete combustion gas recirculation pipe 9. That is, incomplete combustion gas does not leak from the storage chamber 3 or the primary combustion chamber 1 to the outside of the incinerator. In addition, even when the door 301 formed on the front side of the storage chamber 3 is opened when the incinerator is in operation, incomplete combustion gas in the storage chamber 3 does not leak to the outside.

  The bottom plate, the lock mechanism, the handle and the like of the storage chamber 3 are not limited to the above-described form, and a predetermined amount of combustible material is transferred from the storage chamber 3 to the primary combustion chamber as necessary while being shut off from the outside air. Any structure may be used as long as it can be charged to 1.

<Flame adjustment plate 24>
The ascending airflow (gas) flowing into the secondary combustion chamber 2 (No. 2 furnace) from the primary combustion chamber 1 through the flue portion is biased toward the primary combustion chamber side (No. 1 furnace side) of the secondary combustion chamber 2. There is a case. As shown in FIG. 7, a flame adjustment plate 24 may be provided in the secondary combustion chamber 2. The flame adjustment plate 24 disturbs (inhibits) the flow of gas flowing into the secondary combustion chamber 2 from the flue portion, and uniformly distributes the updraft in the secondary combustion chamber.

In the present embodiment, the flame adjustment plate 24 is located closer to the primary combustion chamber side (No. 1 furnace side) than the air supply pipe 23 in the secondary combustion chamber 2 and at a position near the upper side of the outlet of the flue section 4. Has been placed. Specifically, the flame adjustment plate 24 is fixed by a metal fixture 24k. The flame adjustment plate 24 may have an arbitrary shape such as a circular shape or a rectangular plate. Further, the flame adjusting plate 24 is provided with one or a plurality of vent holes having a predetermined shape, and in the present embodiment, the flame adjusting plate 24 is provided with vent holes 24a, 24b, and 24c.
The flame adjusting plate 24 inhibits a part of the rise of the flame flowing into the secondary combustion chamber 2 from the flue section 4 and distributes the flame evenly in the furnace.
Further, in a state in which the flame is weakened by the flame adjusting plate 24, air is supplied from the hole 23b formed in the central portion of the air supply pipe 23 or the hole 23c formed near the upper portion (greeting oxygen) In this state, the mixed gas can be completely burned with high combustion efficiency in the secondary combustion chamber.

  As shown in FIG. 7A, the air supply pipe 23 provided in the secondary combustion chamber 2 is provided so as to communicate with an air passage 61 formed in the base portion 102. In the present embodiment, an L-shaped tube 65 (elbow tube) is disposed in the air passage 61, and the air supply tube 23 is detachably provided on the L-shaped tube 65. The air supply pipe 23 is configured to be able to be taken in and out from a management port 29 provided on the back side of the secondary combustion chamber 2.

  Further, as shown in FIG. 7B, in order to increase the durability of the inner wall of the secondary combustion chamber 2, a cylindrical portion 2f made of metal such as stainless steel can be replaced on the inner wall of the secondary combustion chamber 2. It may be provided. For example, when the metallic cylindrical portion 2f on the inner wall of the secondary combustion chamber is deteriorated, the incinerator can be used for a longer period of time by replacing it with a new metallic cylindrical portion 2f.

<Temperature adjustment unit 25>
As shown in FIG. 8, in the incinerator according to the embodiment of the present invention, the temperature adjustment unit 25 is provided in the chimney portion 21 in the upper part of the secondary combustion chamber 2. This temperature adjustment unit 25 is provided to raise the temperature in the furnace (indoor) of the secondary combustion chamber 2 at an early stage during the initial operation of the incinerator and to generate an updraft in a short time.
Specifically, the temperature adjustment unit 25 is provided in the vicinity of the entrance of the chimney unit 21 and includes movable members 251 and 252 (FIGS. 8B and 8C). A metal bottom base plate 26c is disposed on the upper surface of the secondary combustion chamber 2, a metal intermediate guide member 26b is disposed on the bottom base plate 26c, and a metal upper lid is disposed on the intermediate guide member 26b. An iron plate 26a is arranged.
A gap 25bh is formed in the intermediate guide member 26b, and movable members 251 and 252 are movably disposed in the gap 25bh.

  At the initial stage, as shown in FIG. 8C, the movable members 251 and 252 are closed, the flow passage cross-sectional area near the entrance of the chimney 21 is reduced, and the heat radiation from the chimney 21 is suppressed. The temperature in the furnace of the secondary combustion chamber 2 is raised in a short time by heating in the heating unit 5 such as a burner. When the temperature in the furnace of the secondary combustion chamber 2 reaches a predetermined temperature, for example, about 400 ° C., as shown in FIG. 8B, the movable members 251 and 252 of the temperature adjustment unit 25 are opened, The high-temperature gas in the secondary combustion chamber 2 is exhausted to the outside from the chimney 21, an ascending airflow is generated in the secondary combustion chamber 2, and the ascending airflow generated in the secondary combustion chamber 2 is used as a suction force for the primary High temperature combustion gas generated in the combustion chamber 1 and unburned gas (incomplete combustion gas) from near the upper part of the primary combustion chamber are sucked into the flue section 4 and mixed, and introduced into the secondary combustion chamber 2. Can do.

As described above, the incinerator 10 according to the embodiment of the present invention includes the primary combustion chamber 1 in which the rooster 11 (grate) is disposed in the lower part of the room, and the furnace wall of the cylindrical refractory material, and the primary combustion chamber. A storage chamber 3 provided at the upper portion of 1 and capable of introducing a combustible into the primary combustion chamber 1; a secondary combustion chamber 2 provided in parallel to the primary combustion chamber 1 and having a furnace wall of a cylindrical refractory material; The chimney 21 provided in the upper part of the secondary combustion chamber 2, the flue part 4 communicating the lower part of the primary combustion chamber 1 and the lower part of the secondary combustion chamber 2, and the secondary combustion chamber 2, A heating unit 5 such as a burner that completely burns incomplete combustion gas introduced into the secondary combustion chamber 2 from the combustion chamber 1 through the flue portion 4, and an air supply unit 6 that supplies air to the secondary combustion chamber 2 And having.
Further, the incinerator 10 includes a protruding portion 7a protruding from the primary combustion chamber side intake port 4a of the flue portion 4 toward the indoor side of the primary combustion chamber 1, and the protruding portion 7a causes the primary combustion chamber from the storage chamber 3. A fire spread block 7 for preventing inflow of combustibles introduced into the chamber 1 into the flue section and an incomplete combustion gas inlet 8a are located near the upper portion of the primary combustion chamber, and the incomplete combustion gas A ventilation path is formed from the intake port 8 a along the inner wall of the primary combustion chamber, and an incomplete combustion gas recirculation path 8 communicating with the flue portion 4 is provided.
That is, incomplete combustion gas in the vicinity of the upper part of the primary combustion chamber 1 flows into the flue portion 4 via the incomplete combustion gas recirculation path 8, and high-temperature combustion in the lower portion of the primary combustion chamber is performed in the flue portion 4. The gas and the incomplete combustion gas are mixed, and a part or all of the incomplete combustion gas is combusted, which flows into the secondary combustion chamber 2, and the secondary is maintained at a high temperature by the heating unit 5 such as a burner. In the combustion chamber 2, air is supplied by the air supply unit 6, and the incomplete combustion gas can be burned completely with high efficiency.

  Specifically, the incinerator according to the embodiment of the present invention uses the upward air flow generated in the secondary combustion chamber 2 to generate the high-temperature combustion gas generated in the primary combustion chamber 1 and the unburned air from the upper vicinity of the primary combustion chamber 1. Combustion gas (incomplete combustion gas) is used as a suction force for sucking into the flue section 4, and the high temperature combustion gas and uncombusted gas (incomplete combustion gas) are mixed in the flue section 4, and the secondary combustion chamber 2 can be introduced.

In the present embodiment, the flue section 4 has an inclined portion 102k formed in the base portion 102, and the flow passage cross-sectional area of the secondary combustion chamber side exhaust port 4e rather than the primary combustion chamber side intake ports 4a, 4b, 4c. Is formed to be small. That is, when the incinerator is in operation, due to the venturi effect, the gas flow velocity is relatively fast and the atmospheric pressure is relatively low in the vicinity of the secondary combustion chamber side outlet 4e, and the suction force at each inlet of the flue section 4 is large. .
In addition, the combustibles on the upper rooster 11A (11) disposed in the lower part of the primary combustion chamber 1 are combusted at high temperatures, and the flue portion 4 provided in a tunnel shape in the lower part of the primary combustion chamber 1 A high-temperature combustion gas or hot wire is directly input to the flue section 4, and the incomplete combustion gas flowing into the flue section 4 through the incomplete combustion gas recirculation path 8 is heated with high efficiency, and a part of the incomplete combustion gas. Alternatively, the entire combustion can be performed, and by introducing the gas into the secondary combustion chamber 2, the incomplete combustion gas can be completely combusted in the secondary combustion chamber 2 with high efficiency.

  Further, the protrusion 7 a of the fire spread block 7 can easily prevent the inflow of the combusted material introduced from the storage chamber 3 into the primary combustion chamber 1 into the flue portion 4. That is, it is possible to prevent the combustible material from flowing into the flue portion 4 and spreading it in a state where the air passage of the flue portion 4 is blocked.

  Moreover, the incinerator 10 which concerns on embodiment of this invention has the recirculation pipe | tube 9 for incomplete combustion gas in which the communicating path which connects the storage chamber 3 to the flue part 4 through the exterior of the primary combustion chamber 1 was formed. . That is, with a simple configuration, the incomplete combustion gas in the storage chamber 3 can be guided to the secondary combustion chamber 2, and the incomplete combustion gas can be completely burned in the secondary combustion chamber 2.

  The incinerator 10 according to the embodiment of the present invention is disposed between the secondary combustion chamber side outlet 4e of the flue portion 4 and the chimney 21 in the interior of the secondary combustion chamber 2, and the flue portion 4 A flame adjusting plate 24 for adjusting the flame from the secondary combustion chamber side discharge port 4e to be uniform in the chamber of the secondary combustion chamber 2 is provided. In other words, the flame adjustment plate 24 inhibits a part of the rise of the flame flowing into the secondary combustion chamber 2 from the flue section 4 and distributes the flame evenly in the secondary combustion chamber 2, thereby high combustion of the mixed gas. It can be completely burned efficiently.

Next, the effects of the incinerator according to the embodiment of the present invention described above will be described in the itemized list.
1. As a combustible material, for example, no residue is produced for vegetation-based and paper-based organic materials.
In many of the conventional small incinerators, residues are accumulated in the furnace after incineration. When processing the residue, for example, it is necessary to report it to the relevant government office and to carry it out to a facility with incineration permission. As described above, the incinerator according to the embodiment of the present invention includes the upper rooster 11A and the lower rooster 11B, and the lower rooster 11B is set to an interval narrower than the interval of the upper rooster 11A. Can be burned completely and there is very little accumulation of residue.
The inventor of the present application actually manufactured an incinerator according to the present invention and conducted an incineration experiment. As a result of the experiment, it was confirmed that there was very little residue, the organic matter was completely burned, and only ash remained.

2. Reflux treatment of incomplete combustion gas in the primary combustion chamber 1 (primary incinerator).
In a conventional small incinerator, incomplete combustion gas may stay in the furnace. As described above, the incinerator according to the embodiment of the present invention has an incomplete combustion gas recirculation part (incomplete combustion gas recirculation path 8) near the upper portion of the primary combustion chamber 1. It is the structure which burns. The smoke flowing into the storage (storage chamber 3) is output to the flue through the duct pipe (incomplete combustion gas recirculation pipe 9) and sent into the secondary combustion chamber (second furnace). Complete combustion in the furnace of the next combustion chamber 2 can suppress the generation of toxic gases such as dioxins.

3. Dispersion heating of combustion gas in the secondary combustion chamber 2 (No. 2 furnace).
When the flame adjustment plate 24 is not provided, the upward flow of the combustion gas flowing into the secondary combustion chamber 2 (No. 2 furnace) is not uniform. Specifically, a flame flows up to the secondary combustion chamber 2 from the vicinity of the outlet of the communication path provided in the lower part of the secondary combustion chamber 2, but when viewed from above, the flue in the secondary combustion chamber 2 In some cases, the flame is biased toward the exit of the portion 4. In this state, when air is supplied and oxygen is supplied, a tailwind is obtained.
As described above, the incinerator according to the embodiment of the present invention is a flame adjustment plate that shields a part of the gas flow path on the outlet side of the flue portion 4 in a top view of the secondary combustion chamber (inside the furnace). 24 (control plate). The flame adjustment plate 24 is formed in a predetermined shape such as a circular shape or a rectangular shape. By providing the flame adjustment plate 24, turbulence is generated in the flow path from the outlet of the flue section 4 to the chimney, the flame is diffused, and the head is in a headwind state where oxygen (air) is supplied from the air supply pipe. Thus, after the incomplete combustion gas is completely burned with high efficiency, the combustion gas can be released from the chimney 21.

4). Initial temperature increase of the secondary combustion chamber (No. 2 furnace) The temperature of the secondary combustion chamber (No. 2 furnace) is increased by the heating unit 5 such as a burner to generate an updraft in the secondary combustion chamber. As a result of an experiment by the inventor of the present application, when the inside of the secondary combustion chamber 2 (inside the furnace) is about 400 ° C. or higher, an ascending air current can be generated in the secondary combustion chamber 2 with high efficiency. Further, as described above, in the present embodiment, a plate is provided as the temperature adjustment unit 25 in the attachment portion of the chimney portion 21 of the secondary combustion chamber 2. By closing the plate of the temperature adjustment unit 25 during the initial heating, useless heat radiation to the chimney 21 can be suppressed, and the temperature in the secondary combustion chamber 2 can be raised in a short time. Moreover, the heating time by the burner as a heating part can be shortened, and the secondary combustion chamber 2 can be heated cheaply.

5. Economic efficiency of maintenance The incinerator according to the embodiment of the present invention uses castable (refractory concrete) on the inner walls of the primary combustion chamber 1 and the secondary combustion chamber 2 to form a heat-resistant wall. A heat-resistant material generally sold by a heat-resistant material manufacturer has a heat resistance of about 1200 ° C. In a conventional general incinerator, when incinerated for several years at a high temperature of 800 ° C. or higher, the castable surface may become powdery and fall off. The conventional small incinerator had a lifetime at that time.
The incinerator according to the embodiment of the present invention is provided with a storage (storage chamber 3) in the upper part of the primary combustion chamber 1 in a detachable manner. In addition, a chimney mount is detachably provided at the upper part of the secondary combustion chamber 2. In consideration of durability, it is preferable to set the furnace temperature of the secondary combustion chamber 2 to about 800 to 850 ° C.
Thus, since the incinerator is configured so that the storage chamber 3 and the chimney mount can be removed, the incinerator can be easily maintained, the incinerator can be used for a long time, and the economical efficiency of maintenance is excellent. ing.

6). Effect of Fire Spread Blocking Section The incinerator according to the embodiment of the present invention has a flue section 4 between the primary combustion chamber 1 and the secondary combustion chamber 2. Using the ascending airflow generated in the secondary combustion chamber 2 as a suction force, the high-temperature combustion gas generated in the primary combustion chamber 1 and the unburned gas (incomplete combustion gas) from the vicinity of the upper portion of the primary combustion chamber 1 To the secondary combustion chamber 2 with high efficiency. Further, a fire spread blocking unit 7 (fire spread blocking box) is provided on the primary combustion chamber side of the flue section 4. The fire spread blocking portion 7 is formed with a protruding portion 7 a protruding toward the inner side (center side of the primary combustion chamber) than the inner wall of the primary combustion chamber 1.
For example, when the suction power of the flue section 4 is reduced, unburned gas (incomplete combustion gas) flows out of the furnace, which may be annoying to the living environment and may be a target for violating pollution measures.
Since the incinerator which concerns on embodiment of this invention is provided with the fire spread interruption | blocking part 7, it can prevent that the flue part 4 is obstruct | occluded with a to-be-burned material by simple structure, and the suction of the flue part 4 It is possible to prevent a decrease in force.

7). A cylindrical metal plate (stainless steel, etc.) provided on the inner wall of the secondary combustion chamber (No. 2 furnace).
The incinerator which concerns on embodiment of this invention can maintain the combustion temperature in a secondary combustion chamber at about 800 to 850 degreeC at the time of combustion. When the temperature in the secondary combustion chamber decreases during combustion, an auxiliary combustion burner that uses oil, combustible gas, or the like is operated as a heating unit to increase the temperature. Moreover, an incinerator is equipped with a temperature sensor as a temperature detection part, and manages combustion temperature. For example, the combustion temperature varies depending on the type and state of the combusted material (incinerated material). The incinerator according to the embodiment of the present invention includes a cylindrical plate (cylindrical portion 2f) made of stainless steel or the like inside the secondary combustion chamber 2 in order to maintain the temperature in the secondary combustion chamber (inside the furnace). It is possible to reduce the cost of the fuel used for the auxiliary burner. Moreover, it is preferable that this cylindrical part 2f is replaceable.

The incinerator according to the embodiment of the present invention is small and preferably has a firebed area of less than 0.5 m ² .

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to these embodiments, and there are design changes and the like without departing from the gist of the present invention. Is included in the present invention.
Further, the embodiments described in the above drawings can be combined with each other as long as there is no particular contradiction or problem in the purpose and configuration.
Moreover, the description content of each figure can become independent embodiment, respectively, and embodiment of this invention is not limited to one embodiment which combined each figure.
The incinerator according to the embodiment of the present invention further includes a spiral heat conductive pipe between the heat insulating material 27 of the secondary combustion chamber 2 and the outer wall (furnace wall 2a) of the secondary combustion chamber 2, and the secondary combustion. A liquid such as water may be circulated by a pump or the like as a heat medium between a tank provided outside the chamber 2. In other words, the heat generated in this incinerator may be used for melting snow or heating an agricultural house.

DESCRIPTION OF SYMBOLS 1 ... Primary combustion chamber 2 ... Secondary combustion chamber 3 ... Storage chamber 4 ... Flue part 4a ... Primary combustion chamber side inlet 4b, 4c ... Inlet 4e ... Secondary combustion chamber side outlet 4t ... Flue cylinder Upper part of the shape part 5 ... Heating part (burner)
DESCRIPTION OF SYMBOLS 6 ... Air supply part 6A ... Air blower 7 ... Fire spread interruption part 7a ... Protrusion part 7c ... Opening part 8 ... Incomplete combustion gas recirculation path 9 ... Incomplete combustion gas recirculation pipe 10 ... Incinerator 11 ... Rooster 11A ... Upper rooster 11B ... Lower rooster 21 ... Smokestack 23 ... Air supply pipe 24 ... Flame adjustment plate 25 ... Temperature adjustment unit (temperature adjustment plate)
51 ... Temperature detection unit 52 ... Control unit 61 ... Air passage

Claims (4)

A primary combustion chamber having a cylindrical furnace wall formed with a rooster in the lower part of the room and formed of a refractory material;
A storage chamber provided in an upper portion of the primary combustion chamber and capable of charging a combustible into the primary combustion chamber;
A secondary combustion chamber provided in parallel with the primary combustion chamber and provided with a cylindrical furnace wall formed of a refractory material;
A chimney provided in the upper part of the secondary combustion chamber;
A flue section communicating with a lower portion of the primary combustion chamber and a lower portion of the secondary combustion chamber;
A heating unit that heats the interior of the secondary combustion chamber and completely burns incomplete combustion gas introduced from the primary combustion chamber into the secondary combustion chamber through the flue portion;
An incinerator having an air supply unit for supplying air to the secondary combustion chamber,
A projecting portion projecting from the primary combustion chamber side intake port of the flue portion toward the indoor side of the primary combustion chamber, and the combusted material introduced into the primary combustion chamber from the storage chamber by the projecting portion; A fire spread block to prevent inflow into the flue,
An incomplete combustion gas intake port is located near the upper portion of the primary combustion chamber, and a ventilation path is formed along the inner wall of the primary combustion chamber from the incomplete combustion gas intake port, and communicates with the flue portion. And an incomplete combustion gas recirculation passage.   2. The incinerator according to claim 1, further comprising an incomplete combustion gas recirculation pipe formed with an air passage communicating with the flue portion from the storage chamber through the outside of the primary combustion chamber.   3. The incinerator according to claim 1, wherein the rooster provided in a lower portion of the primary combustion chamber includes an upper rooster and a lower rooster having a narrower gap than the upper rooster.   In the chamber of the secondary combustion chamber, it is disposed between the secondary combustion chamber side outlet of the flue portion and the chimney, and the flame from the secondary combustion chamber side outlet of the flue portion is passed through the secondary combustion chamber. The incinerator according to any one of claims 1 to 3, further comprising a flame adjusting plate that is adjusted to be uniform in the combustion chamber.

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