JP2007285660A

JP2007285660A - Wood stove

Info

Publication number: JP2007285660A
Application number: JP2006116236A
Authority: JP
Inventors: Makoto Ikeda; 亮（まこと）池田
Original assignee: Ikeda Akira; 池田亮
Priority date: 2006-04-20
Filing date: 2006-04-20
Publication date: 2007-11-01

Abstract

High-efficiency heating is achieved by allowing unburned gas to stay in a secondary combustion chamber without using a catalyst, keeping it at a high temperature, and supplying sufficient air from the outside to efficiently burn the unburned gas. At the same time, it will reduce the black smoke in the exhaust and provide a wood stove that can be used in urban areas.
A horizontal air supply pipe 17 is provided in the combustion chamber 11 to take in air flowing in from an air amount adjusting valve 14 of a soot insertion port 15, and the horizontal air supply pipe 17 is provided on a side surface in the opposite direction of the soot throwing port 15. A plurality of air holes 18 are provided, and a secondary combustion cylinder 20 is provided on the upper side of the combustion chamber 11 on the side opposite to the soot inlet 15, and the secondary combustion cylinder 20 can be supplied by adjusting the amount of outside air from the lateral direction. A plurality of air amount adjusting pipes are provided, a connecting plate 21 is provided at the lower portion thereof, a convection suppressing plate 25 is provided at the upper portion thereof, a secondary combustion chamber 26 is formed between the two plates, and the convection suppressing plate 25 is further provided. A vortex forming blade 27 is formed on the wall of the exhaust chamber 28 which is an upper space.
[Selection] Figure 7

Description

The present invention relates to a wood stove equipped with a chimney that burns firewood or the like in the furnace as fuel.

Conventionally, as a soot stove which burns soot, the following patent documents 1 (patent publication 2000-46334) are known, for example. As shown in FIG. 8, the soot stove S includes a main body 1 that constitutes a combustion chamber 2 in which soot is placed, an inlet 3 that is provided in the main body 1 and into which soot is placed, and a combustion chamber 2 that is provided in the main body. And a chimney 4 communicating with the. In such a wood stove S, in order to prevent a large amount of unburned gas from being included in the exhaust gas, a secondary connected to the upper side of the combustion chamber 2 and before the chimney 4 via the communication port 5 is used. A combustion chamber 6 is provided, and a platinum catalyst 7 for promoting combustion of unburned gas is provided in the secondary combustion chamber 6. As a result, when soot is introduced into the combustion chamber 2 and ignited and combusted, the exhaust gas containing unburned gas generated by combustion in the combustion chamber 2 is warmed. Coming to the next combustion chamber 6, combustion of unburned gas is promoted by the platinum catalyst 7. For this reason, the unburned gas contained in exhaust gas is reduced.

Moreover, the following patent document 2 (patent publication 2004-77060) is known as a wood stove which does not use a platinum catalyst.
As shown in FIG. 9, the soot stove is provided with a planar placement portion 13 on which the soot is placed in the combustion chamber 11 of the main body 10, and the main body 10 is directed toward the upper center of the placement portion 13. A plurality of inclined air supply pipes 40 having outlets 41 capable of supplying outside air from obliquely above are provided so that the outlets 41 are arranged symmetrically with respect to the center line of the mounting part 13, and further, the mounting part A plurality of horizontal air supply pipes 50 having outlets 51 capable of supplying outside air horizontally are arranged so that the outlets 51 are arranged symmetrically with respect to the center line of the mounting portion 13 toward the upper center of the unit 13. Provided.

As a result, an uncombusted gas is burned with high efficiency by supplying sufficient air with a simple structure without using a catalyst, thereby reducing the generation of unburned gas and reducing the manufacturing cost.
Patent Publication 2000-46334 Patent Publication No. 2004-77060

However, in such a conventional wood stove, the unburned gas is secondary-combusted to clean the exhaust gas. However, the structure is complicated because the secondary combustion chamber is provided in the upper part and the catalyst is provided in this. In addition, there is a problem that the parts cost is high and the manufacturing cost is high. In addition, in the method using the inclined air supply pipe, the condition for air suction is critical.
The present invention has been made in view of the above-described problems. By using an unburned gas in a secondary combustion chamber and keeping it at a high temperature without using a catalyst, sufficient air is supplied from the outside to the secondary combustion chamber. The purpose is to provide a wood-burning stove that can be used even in urban areas by efficiently burning unburned gas, obtaining a high-efficiency heating effect, and at the same time reducing exhaust black smoke.

In order to achieve such an object, a soot stove of the present invention comprises a main body constituting a combustion chamber into which soot is placed, a soot inlet provided in the main body and into which soot is introduced, and a combustion chamber provided in the main body. A soot stove comprising a secondary combustion cylinder communicating with the chimney and a chimney communicating with the secondary combustion cylinder is provided with a placement part on which soot is placed in the combustion chamber, A horizontal air supply pipe for taking in air flowing in from the air amount adjusting valve is provided, the horizontal air supply pipe has a plurality of air holes on both side surfaces in the opposite direction to the soot inlet, and further, Is provided with a secondary combustion cylinder on the upper side of the opposite combustion chamber, the secondary combustion cylinder has a plurality of air quantity adjustment pipes that can be supplied by adjusting the amount of outside air from the lateral direction, and mounting of the air quantity adjustment pipes The connecting plate is attached to the secondary combustion cylinder below The upper secondary combustion cylinder is provided with a convection suppression plate, a secondary combustion chamber is formed between the two plates, and the exhaust chamber wall above the convection suppression plate is disposed on the exhaust chamber. A vortex forming blade that efficiently draws gas into the chimney is constructed.

Thereby, when burning soot, soot is thrown into the combustion chamber of a main body from an insertion port, and it mounts in a mounting part. When the soot is ignited in this state, the soot is combusted and the unburned gas generated thereby rises above the mounting part, but the air hole of the horizontal air supply pipe is provided on the opposite side of the soot inlet. Therefore, unlike conventional stoves, soot burns from the back and acts to maximize the temperature directly below the secondary combustion chamber.

The unburned gas generated in the combustion chamber tries to escape to the secondary combustion chamber through the communication plate, but since the opening area of the communication plate is not fully open, most of it is pushed back to the combustion chamber and burned. On the other hand, the unburned gas that has passed through the connecting plate rises spirally through openings that are alternately bent upward and downward, which are arranged symmetrically on the connecting plate.

The unburned gas that has passed through the connecting plate does not pass through the chimney as it is, but is retained by the convection suppression plate having an opening area smaller than the opening area of the connecting plate, and is further heated by the heat of the lower combustion chamber. Become.

Outside air is supplied from the air supply pipe arranged symmetrically on the intermediate side surface between the connecting plate and the convection suppression plate, and sufficient air is supplied in a spiral shape, so that high-temperature unburned gas is highly efficient and secondary. Combusted and exhaust of unburned gas from the chimney is reduced.

Exhaust gas that has passed through the convection suppression plate has been enhanced by the chimney effect by blade-like fins and vortex formation blades provided on the inner wall of the exhaust chamber, which is the upper space of the secondary combustion chamber, and is suppressed by the connecting plate and convection suppression plate. Compensates for air pull from the chimney.

Hereinafter, based on an accompanying drawing, a wood stove concerning an embodiment of this invention is explained in detail.
1 to 7 show a wood stove according to the first embodiment of the present invention.

The soot stove includes a main body 10 that constitutes combustion chambers 11 and 19 in which soot is placed. The main body 10 has a rectangular shape or a cylindrical shape and is hollow. Also, the foot 12 is provided at the bottom. Further, a secondary combustion cylinder 20 communicating with the combustion chamber 11 and a chimney 24 connected to the secondary combustion cylinder 20 are provided on the rear side of the upper surface of the main body 10. Further, a planar placement portion on which the soot is placed is provided on the lower side in the combustion chamber 11. Furthermore, a cylindrical horizontal air supply pipe 17 is provided at the center of the mounting portion of the combustion chamber 11. The horizontal air supply pipe 17 has a plurality of air holes 18 on both side surfaces at the rear portion of the mounting portion.

In addition, the main body 10 is provided with an insertion port 15 into which a bag is inserted. The insertion port 15 includes a door 13 that can be opened and closed. The end of the door 13 is hinged to the opening of the inlet. An air amount adjustment valve 14 is provided in the center of the door 13.

The secondary combustion cylinder 20 mounted on the rear side of the upper surface of the main body 10 has a cylindrical shape, the top of the head has a dome shape, and a chimney 24 is connected to the head.

A disc-shaped communication plate 21 is provided horizontally in the vicinity of the connecting portion between the main body combustion chamber 11 and the secondary combustion cylinder 20. As shown in FIG. 4, the structure of the communication plate 21 has a plurality of concentric notch portions 29 in two rows, and a communication tube 30 in the central portion. As shown in FIG. 5, the notch 29 is paired with a section that is bent obliquely upward and a part that is bent obliquely downward, and the unburned gas from the combustion chambers 11, 19 is secondary to the vertical. A spiral airflow is created by suppressing communication with the combustion chamber 26. It is desirable that a plurality of (three in FIG. 4) notch portions are arranged symmetrically on a concentric circle. Further, it is desirable that the positions of the outermost row and the second row of cutout portions are arranged so as to face the second row of cutout portions at the closed portion of the outermost row. The side surface of the communication cylinder 30 also has a notch 29 in the horizontal direction, and unburned gas flowing from an opening provided at the center of the communication plate is taken into the combustion chamber 26 in a spiral shape.

Further, a disc-shaped convection suppression plate 25 is provided in the horizontal direction at the intermediate portion of the secondary combustion cylinder 20. The structure of the convection suppression plate 25 is substantially the same as that of the communication plate 21, but is small so that the opening area of the notch is smaller than that of the communication plate 21. By comprising in this way, the unburned gas from the combustion chamber 11 is taken in the secondary combustion chamber 26 in the shape of a spiral, becomes confined, and becomes a residence state. Since the central portion of the convection suppression plate 25 is a portion where combustion is reliably performed, a plurality of simple openings may be provided in order to promote pulling to the chimney.

The space sandwiched between the communication plate 21 and the convection suppression plate 25 forms a secondary combustion chamber 26. A plurality of (two in FIG. 2) air that takes in outside air into the outer wall of the intermediate portion of the secondary combustion chamber 26. The quantity adjusting pipes 22 are arranged horizontally symmetrically. An air amount adjusting valve 23 is provided at each of the outside air inlets of the air amount adjusting pipe 22 so that the inflow of the outside air can be suitably adjusted.

The unburned gas exhausted in the secondary combustion chamber 26 passes through the opening of the convection suppression plate 25 and enters the exhaust chamber 28 connected to the chimney 24. Blade-shaped fins and swirl forming blades 27 are attached to the inner wall of the exhaust chamber 28 at an inclination, and the exhaust is sucked up in a spiral shape to promote the pulling of the chimney 24.

The flow of air when using the wood stove of the present invention will be described with reference to FIG. A soot is placed on the placement portion from the insertion port 15 and ignited. The soot starts to burn with the outside air supplied by the air amount adjustment valve 14. In this case, air mainly flows along the upper surfaces of the combustion chambers 11 and 19, but external air is supplied horizontally from the air holes 18 of the horizontal air supply pipe 17 toward the tip of the mounting portion. Therefore, the primary combustion is promoted at the tip portion of the soot, and the temperature immediately below the secondary combustion cylinder 20 becomes the highest. Unlike conventional stoves, it does not burn near the inlet 15, but burns from the back, so it burns at a higher temperature and the generation of unburned gas is reduced.

The gas containing unburned gas that has not been burned tries to rise to the secondary combustion cylinder 20 above the mounting portion. However, since the communication plate 21 has a closed portion, it is pushed back and recombusted. High efficiency is achieved. On the other hand, the unburned gas that has passed through the communication plate 21 and the communication tube 30 at the center of the communication plate has a spiral shape because the notch 29 that is the opening of the communication plate 21 and the communication tube has a special shape. It is guided to the secondary combustion chamber 26. Since the secondary combustion chamber 26 is covered with a convection restraining plate 25 at the top, a temporary residence state is created in this space and is overheated by the heat of the combustion chamber 11. Since an appropriate amount of outside air is fed into the unburned gas from the air adjustment pipe 22 and is evenly supplied as a vortex, the unburned gas is burned with high efficiency, and exhaust of the unburned gas from the chimney 24 is reduced. Be made.

Further, in this case, the exhaust gas that has passed from the secondary combustion chamber 26 through the notch 29 that is the opening of the convection suppression plate 25 is caused by blade-shaped fins and eddy current forming blades 27 provided on the inner wall of the exhaust chamber 28. The chimney effect of trying to suck up into the chimney 24 as a vortex can be enhanced, and backflow can be prevented.

As described above, according to the wood stove of the present invention, the outside air taken in through the air amount adjusting valve provided in the door of the wood inlet is used to supply horizontal air having an air hole at the tip of the wood mounting portion. Combusting from the tip of the soot by the pipe, leading the unburned gas to the secondary combustion chamber provided above it, and supplying the outside air horizontally from the side of the secondary combustion chamber to burn the unburned gas with high efficiency Therefore, exhaust of unburned gas from the chimney and black smoke can be reduced, making it difficult to pollute the environment.

In addition, since the secondary combustion cylinder has a closed portion of the communication plate, the unburned gas is pushed back to the combustion chamber side and burned. In this respect, the unburned gas can be burned with high efficiency. The exhaust of unburned gas from the chimney can be reduced. Further, since the air hole of the horizontal air supply pipe is arranged at the tip of the mounting portion, the soot burns from the tip and the temperature at the back of the stove, that is, the temperature immediately below the secondary combustion cylinder, is increased. Efficiency is increased.

Furthermore, with a simple structure in which a secondary combustion chamber is provided in the secondary combustion cylinder without using a catalyst as in the past, unburned gas can be burned with high efficiency by supplying sufficient air, Therefore, the manufacturing cost can be reduced.

It is a perspective view which shows the wood stove concerning the Example of this invention. It is side surface sectional drawing which shows the main-body part of the wood stove concerning the Example of this invention. It is a front sectional view in the just under the secondary combustion cylinder of the wood stove concerning the example of this invention. It is a perspective view of the communicating plate of the wood stove concerning the Example of this invention. It is sectional drawing along the circumference AA 'of the communicating plate of the wood stove concerning the Example of this invention. It is a perspective view of the convection suppression board of the wood stove concerning the Example of this invention. It is sectional drawing which shows the flow of the air of the wood stove concerning the Example of this invention. It is the longitudinal cross-sectional view which abbreviate | omitted the chimney of the Example of the conventional wood stove. S Wood stove 1 Body 2 Combustion chamber 3 Input port 4 Chimney 5 Communication port 6 Secondary combustion chamber 7 Platinum catalyst It is front sectional drawing which shows another Example of the conventional wood stove. DESCRIPTION OF SYMBOLS 10 Main body 11 Combustion chamber 12 Foot 13 Placement part 14 Cover part 14a Cylindrical body 15 Ash removal outlet 16 Ash receiving part 17 Chimney 20 First inlet 21 Door 22 Window 30 Second inlet 31 Lid 40 Inclined air supply pipe 41 Outlet 42 Inlet 43 Extending portion 44 Inflow amount adjusting mechanism 50 Horizontal air supply pipe 51 Outlet 52 Inlet 54 Inflow amount adjusting mechanism

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Main body 11 Combustion chamber 12 Foot 13 Door 14 Air quantity adjustment valve 15 Inlet 16 Support body 17 Horizontal air supply pipe 18 Air hole 19 Combustion chamber 20 Secondary combustion cylinder 21 Communication plate 22 Air quantity adjustment pipe 23 Air quantity adjustment valve 24 Chimney 25 Convection suppression plate 26 Secondary combustion chamber 27 Eddy current forming blade 28 Exhaust chamber 29 Notch 30 Communication tube

Claims

A main body that constitutes a combustion chamber in which soot is placed, a charging port provided in the main body, a secondary combustion cylinder that communicates with the combustion chamber provided in the main body, and a secondary combustion cylinder In a wood stove provided with a communicating chimney, a flat placement portion on which the soot is placed is provided in the main body combustion chamber, and the placement portion takes in the air flowing in from the air amount adjustment valve at the soot inlet A wood stove equipped with a supply pipe and a horizontal air supply pipe with a plurality of air holes on both sides opposite to the wood inlet.
Further, the secondary combustion cylinder is provided on the upper side of the combustion chamber opposite to the soot inlet of the mounting portion, and the secondary combustion cylinder has a plurality of air volumes that can be supplied by adjusting the amount of outside air from the lateral direction. The secondary combustion cylinder below the position where the air amount adjusting pipe is attached has a connecting plate, and the secondary combustion cylinder above the position where the air amount adjusting pipe is attached is provided with a convection suppression plate. A secondary combustion chamber is formed between the plates, and a vortex forming blade for drawing the exhaust gas of the secondary combustion chamber to the chimney is formed on the wall of the exhaust chamber, which is the space above the convection suppression plate. Item 1. A wood stove according to item 1.