JP2019105404A - Combustion device - Google Patents

Abstract

To provide a combustion device capable of improving combustion efficiency by effectively achieving higher temperature of a secondary combustion chamber serving as a passage of a combustible gas in a short time.SOLUTION: A combustion device 1 comprises a primary combustion chamber 11 which combusts a combustion object by ignition, and a secondary combustion chamber 12 arranged on a downstream side of the primary combustion chamber 11 and combusting the combustible gas generated by combusting the combustion object in the primary combustion chamber 11. The secondary combustion chamber 12 comprises a resistance mechanism 60 imparting a flowing resistance to the combustible gas flowing through the secondary combustion chamber 12.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a combustion apparatus capable of improving the combustion efficiency, for example, in a wood stove and combustion in an incineration facility.

Heretofore, in combustion devices such as wood stoves, various types of combustion devices for improving combustion efficiency have been developed.
For example, a rocket mass heater (hereinafter referred to as a rocket stove) called a so-called rocket stove is widely known as a technology capable of efficiently burning wood-based combustibles such as firewood.

Utility model registration 3165517 gazette

The above-mentioned patent document 1 is a device related to a wood-burning stove, in which the wood is vertically inserted from the side, the side door 1-2 is attached to the side of the wood supply part 1 which can be sealed, the combustion part 3 is provided at the bottom, A configuration is disclosed in which the combustion gas rising portion 4 surrounded by the heat insulating material and the heat radiating portion piping 7 are provided. By providing such a configuration, there is an advantage that combustion efficiency is good and generation of smoke can be suppressed by strong suction power.
However, in the conventional rocket stove, the combustible gas generated in the primary combustion chamber is mixed with oxygen at a high temperature to cover the secondary combustion chamber with a heat insulating material in relation to the configuration of the secondary combustion chamber to promote oxidation. It was common to be the only configuration.
In order to burn the flammable gas efficiently, the three factors of temperature, time, and turbulence are important. In the above-mentioned conventional rocket stove, the flammable gas reaching the secondary combustion chamber rises at high speed. Therefore, there is a problem that efficient combustion can not be performed because it takes time to raise the temperature in the secondary combustion chamber.

  Therefore, the present invention solves the above-mentioned problems in the prior art, and can effectively raise the temperature of the secondary combustion chamber, which is a passage for the flammable gas, in a short time, thereby providing a combustion apparatus capable of improving the combustion efficiency. It will be an issue.

In order to achieve the above object, the combustion apparatus of the present invention is disposed downstream of the primary combustion chamber and a primary combustion chamber for igniting and burning an object to be combusted, and the combustibles in the primary combustion chamber And a secondary combustion chamber for combusting a combustible gas produced by the combustion of the fuel gas, wherein the secondary combustion chamber is provided with a flow resistance to the combustible gas flowing in the secondary combustion chamber. The first feature is to provide a mechanism.
In addition to the first feature, the combustion apparatus of the present invention has a second feature in which the resistance mechanism is detachably provided in the secondary combustion chamber.
In the combustion apparatus according to the present invention, in addition to the second feature, the resistance mechanism includes a contact resistance piece disposed at an angle intersecting the combustible gas flowing in the secondary combustion chamber and in contact with the combustible gas. Is the third feature.
Further, in the combustion apparatus according to the present invention, in addition to the third feature, the resistance mechanism includes a cylindrical body provided with a contact resistance piece on an inner peripheral surface, and a cylindrical body extending downward from the cylindrical body And supporting legs for mounting the second combustion chamber in the secondary combustion chamber.
Further, in the combustion apparatus according to the present invention, in addition to the fourth feature, a plurality of support legs are provided at predetermined intervals in the circumferential direction of the cylindrical body, and a plurality of the support legs are primarily A fifth feature is that the fuel cell is disposed at a position orthogonal to the combustible gas flowing into the secondary combustion chamber from the combustion chamber.

  According to the combustion apparatus of the first aspect, the primary combustion chamber for igniting and burning an object to be combusted and the downstream side of the primary combustion chamber are disposed, and the object to be combusted is burned in the primary combustion chamber. And a secondary combustion chamber for combusting the flammable gas generated by the combustion, wherein the secondary combustion chamber is provided with a resistance mechanism for providing a flow resistance to the flammable gas flowing through the secondary combustion chamber. Because of the provision, combustible gas and heat generated in the primary combustion chamber can be effectively retained by the resistance mechanism. Therefore, it is possible to quickly raise the resistance mechanism and the secondary combustion chamber. As a result, when the flammable gas and oxygen pass through the resistance mechanism heated to a high temperature and the secondary combustion chamber, a turbulent air flow is generated, and the oxidation is strongly promoted. Therefore, the fuel efficiency of the combustible gas can be effectively improved.

According to the combustion apparatus of the second feature, in addition to the effects of the first feature, the resistance mechanism is detachably attached to the secondary combustion chamber, so that the resistance mechanism is exposed to high temperatures. As a result, it is possible to easily replace only the worn resistance mechanism, where the thermal wear is a severe part. Therefore, the combustion device can be used for a long time.
According to the combustion apparatus of the third aspect, in addition to the function and effect of the second aspect, the resistance mechanism is disposed at an angle intersecting the flammable gas flowing in the secondary combustion chamber Since the contact resistance piece to be in contact is provided, the flammable gas flowing in the secondary combustion chamber can be reliably brought into contact with the contact resistance piece. Therefore, it is possible to provide a combustion apparatus capable of retaining the flammable gas more efficiently in the resistance mechanism.

According to the combustion apparatus of the fourth aspect, in addition to the function and effect of the third aspect, the resistance mechanism includes a cylindrical body provided with a contact resistance piece on the inner circumferential surface, and downward from the cylindrical body. Since it further comprises a support leg for extending and placing the tubular body in the secondary combustion chamber, the tubular body is provided, whereby the temperature of the combustibles increased by the resistance mechanism. Sexual gas and heat can pass through the cylindrical body without loss. Also, except for the flammable gas inlet and outlet, the resistance mechanism can be a closed space. Therefore, the resistance mechanism can be raised more quickly.
Further, by providing the support leg portion, the installation work of the resistance mechanism in the secondary combustion chamber can be facilitated. In addition, the cylindrical body can be lifted from the bottom of the secondary combustion chamber by the height of the support leg, and the combustible gas, heat, etc. that has entered the secondary combustion chamber can efficiently flow into the resistance mechanism. It becomes possible.
According to the combustion apparatus of the fifth aspect, in addition to the effects of the fourth aspect, a plurality of support leg portions are provided at predetermined intervals in the circumferential direction of the cylindrical body, The support leg portion is disposed at a position orthogonal to the combustible gas flowing from the primary combustion chamber into the secondary combustion chamber, so that when the combustible gas or the like comes in contact with the support leg portion, so-called Can be generated. Therefore, turbulence can be generated more efficiently in the secondary combustion chamber. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole combustion apparatus which concerns on the 1st Embodiment of this invention, (a) is a front view, (b) is a right view. It is a top view showing a combustion device concerning a 1st embodiment of the present invention. FIG. 2 is a view showing the combustion apparatus according to the first embodiment of the present invention, wherein (a) is a cross-sectional view in the direction of the line B-B in FIG. 2, (b) a view of the outlet portion of the secondary combustion chamber from above It is. It is a figure which shows the resistance mechanism in the combustion apparatus which concerns on the 1st Embodiment of this invention, (a) is a perspective view of a resistance mechanism, (b) is a top view of a resistance mechanism, (c) is a spiral provided in a resistance mechanism. It is a figure which shows the principal part of a contact resistance piece. It is a figure which shows the modification of the resistance mechanism in the combustion apparatus which concerns on the 1st Embodiment of this invention, (a) is a side sectional view of modification 1, (b) is a side sectional view of modification 2, ( c) is a plan view of modification 2; It is a figure which shows the modification of the resistance mechanism in the combustion apparatus which concerns on the 1st Embodiment of this invention, (a) is a side sectional view of modification 3, (b) is a top view of modification 3, (c) These are figures which show the principal part of the modification 4. FIG. It is a figure which shows the modification of the resistance mechanism in the combustion apparatus which concerns on the 1st Embodiment of this invention, (a) is a figure which shows the principal part of the modification 5, (b) is a figure which shows the principal part of the modification 6. It is. It is a figure which shows the combustion apparatus which concerns on the 2nd Embodiment of this invention, and is sectional drawing in the same direction as FIG.

  Hereinafter, a combustion apparatus according to a first embodiment of the present invention will be described with reference to the drawings to provide an understanding of the present invention. However, the following description does not limit the claimed invention.

First, a combustion apparatus 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 4.
Referring to FIG. 1, a combustion apparatus 1 according to a first embodiment of the present invention is a wood stove called a so-called rocket stove.
As shown in FIGS. 1 to 4, the combustion apparatus 1 includes a combustion unit 10, a housing unit 20, a smoke exhaust unit 30, a cooking unit 40, a support leg 50, and a resistance mechanism 60. Be done.

The said combustion part 10 is for burning the combustible gas which generate | occur | produces from a soot while burning the soot which is a combustion object. As shown in FIG. 3, the combustion unit 10 includes a primary combustion chamber 11, a secondary combustion chamber 12, and a connection chamber 13.
In the present embodiment, the burning portion 10 is formed in a J-shaped alphabet in a side view, which is a general shape in so-called rocket stoves. More specifically, the combustion unit 10 is configured by forming an alphabetic J-shaped box body having a cavity inside using a stainless steel plate and an iron plate (steel plate).
Here, "the flammable gas generated from the firewood" means a flammable gas generated by burning wood firewood.

The primary combustion chamber 11 is a chamber for charging the soot which is the object to be burned, performing ignition, and performing combustion.
In this embodiment, the primary combustion chamber 11 is formed in the upright portion on the short side in the combustion unit 10 configured in a J shape of the alphabet in a side view. Further, in the present embodiment, the primary fuel chamber 11 is formed of an iron plate (steel plate).
Further, as shown in FIG. 3, in the primary combustion chamber 11, a portion to be charged with a crucible is provided with a to-be-burned object inlet 11 a formed by penetrating an iron plate (steel plate).
The shape, thickness, size, material, and the like of the primary combustion chamber 11 are not limited to those in the present embodiment, and can be changed as appropriate.

The secondary combustion chamber 12 is disposed downstream of the primary combustion chamber 11 with the connection chamber 13 interposed therebetween, and is a chamber for burning the combustible gas generated by burning the soot in the primary combustion chamber 11. is there. More specifically, it is a room for mixing and oxidizing a flammable gas and air.
In the present embodiment, the secondary combustion chamber 12 is formed by the upright portion on the long side in the combustion portion 10 configured in the J shape of the alphabet in side view.
Further, in the present embodiment, the secondary combustion chamber 12 is formed of an iron plate (steel plate). In addition, a stainless steel plate is disposed on the inner side and an iron plate (steel plate) is disposed on the outer side of the portion of the secondary combustion chamber 12 where the main body portion 61 of the resistance mechanism 60 to be the high temperature portion is disposed. is there. In addition, in a cavity formed between a stainless steel plate and a steel plate (steel plate), which are arranged doubly, a refractory material T formed of a mixture of pearlite and castable is filled.
The refractory material T is not limited to a mixture of perlite and castable, and can be changed as appropriate.
Further, as shown in FIG. 3B, in the present embodiment, the shape of the secondary combustion chamber 12 is a rectangular shape in plan view, but the shape of the secondary combustion chamber 12 is the same as that of this embodiment. It is not limited and can be changed as appropriate. For example, the shape of the secondary combustion chamber 12 may be circular in plan view. That is, the shape of the secondary combustion chamber 12 may be any shape as long as it is a tubular body capable of heat retention. Furthermore, the thickness, size, material, and the like of the secondary combustion chamber 12 are not limited to those in the present embodiment, and can be changed as appropriate.

The connection chamber 13 is a chamber for connecting the primary combustion chamber 11 and the secondary combustion chamber 12.
In the present embodiment, the connecting chamber 13 is formed by the horizontal portion in the combustion unit 10 configured in a J shape of the alphabet in a side view.
The connection chamber 13 is formed of an iron plate (steel plate) and a stainless steel plate. Specifically, an iron plate (steel plate) is used for the portion corresponding to the bottom plate of the connection chamber 13 and a stainless steel plate is used for the portion corresponding to the top plate serving as the high temperature portion.

  In addition, the material of the combustion part 10 is not restricted to an iron plate (steel plate) and a stainless steel plate, and as long as it has durability, heat resistance and the like, other materials may be used. In particular, as the material of the secondary combustion chamber, for example, pottery (ceramic) such as firebrick, clay, and refractory cement can be used. With such a configuration, the secondary combustion chamber can be further enhanced in heat resistance.

In the first embodiment, as shown in FIG. 3, the resistance mechanism 60 is detachably disposed in the secondary combustion chamber 12. More specifically, the resistance mechanism 60 is detachably mounted on the secondary combustion chamber 12 where all the combustible gas passing through the primary fuel chamber 11, heat and the like passes.
The resistance mechanism 60 is for providing flow resistance to the combustible gas flowing in the secondary combustion chamber 12. In other words, it is a means for introducing the flammable gas flowing in the secondary combustion chamber 12 into the turbulent air while staying in the secondary combustion chamber 12 and keeping it warm.
In the present embodiment, as shown in FIG. 3 and FIG. 4, the resistance mechanism 60 is configured by the main body 61, the support leg 62, and the grip 63.

The main body portion 61 is for forming a skeleton of the resistance mechanism 60 and for performing a main function.
In the first embodiment, as shown in FIG. 3 and FIG. 4, the main body 61 is configured of a cylindrical body formed of a stainless steel plate.
Further, along the inner periphery of the main body portion 61, a spiral contact resistance piece 61a which is disposed at an angle intersecting the combustible gas flowing in the secondary combustion chamber 12 and contacts the combustible gas is disposed. More specifically, along the inner circumference of the main body 61, the central portion of the main body 61 is continuous in the traveling direction of the flammable gas so that a cavity is formed along the longitudinal direction of the main body 61. An extending spiral is disposed, and this spiral is used as a spiral contact resistance piece 61a. Preferably, the “angle intersecting with the flammable gas” preferably intersects the traveling direction of the flammable gas at an angle of 90 degrees. However, the angle is not necessarily limited to 90 degrees, and any other angle may be used as long as it intersects the traveling direction of the flammable gas.
The spiral contact resistance piece 61a is formed of a stainless steel plate. Furthermore, in the present embodiment, as the configuration of the spiral contact resistance piece 61a, in the spiral contact resistance piece 61a wound a plurality of times, the thickness is the same at all positions. Of course, it does not restrict to such composition. For example, in the spiral contact resistance piece 61a wound a plurality of times, the first and second turns may be configured to have different thicknesses.
Further, the main body portion 61 and the spiral contact resistance piece 61a are not limited to stainless steel plates, and other materials may be used as long as they have durability and heat resistance. For example, pottery (ceramic) such as refractory bricks, clay, and refractory cement can be used.
Furthermore, in the present embodiment, as shown in FIG. 3, the main body 61 is disposed in the secondary combustion chamber 12 with a gap S open without being in contact with the inner wall 12 a of the secondary combustion chamber 12.
The shape, size, thickness and the like of the main body portion 61 and the spiral contact resistance piece 61a are not limited to those in the present embodiment, and can be changed as appropriate. However, as for the thickness of the main-body part 61 and the spiral contact resistance piece 61a, it is desirable to set it as about 3 mm-4 mm and a certain thickness. With such a configuration, the main body portion 61 and the spiral contact resistance piece 61a can be maintained at a high temperature for a certain period of time even after the burning of the soot is finished. Therefore, at the time of the next combustion, it is possible to rapidly raise the temperature of the main body 61 and the spiral contact resistance piece 61a, and it is possible to effectively suppress the generation of smoke accompanying the non-combustion of the flammable gas. It can be one.

The support leg portion 62 extends downward from the main body portion 61 formed of a cylindrical body, and places the main body portion 61 with a space from the inner bottom surface of the secondary combustion chamber 12. To support the
In the present embodiment, the support leg portion 62 is formed of an elongated flat stainless steel plate. Further, as shown in a simplified manner in FIGS. 3 and 4B, the three support legs 62 are provided at predetermined intervals (equal intervals) in the circumferential direction of the main body 61 constituted by a cylindrical body. In addition, the three support legs 62 are disposed at positions orthogonal to the combustible gas flowing from the primary combustion chamber 11 into the secondary combustion chamber 12.
Further, as shown in FIG. 3, the position of the bottom surface 61 b of the main body 61 lifted by the support leg 62 is flush with the inner ceiling surface U of the connecting chamber 13.
The material, shape, size, length, and number of the support legs 62 are not limited to those in the present embodiment, and can be changed as appropriate. However, it is preferable that the number be three or more, and that a predetermined interval be provided in the circumferential direction of the main body 61.

The grip portion 63 is a so-called handle for gripping the resistance mechanism 60.
In the present embodiment, as shown in part in FIG. 4A, a stainless steel rod member is used so as to be curved in a substantially U shape. Moreover, it is set as the structure attached to the main-body part 61 so that the U-shaped curved part may be located in the top.

  The spiral contact resistance piece 61a, the support leg 62, and the grip 63 described above can be attached to the main body 61 using, for example, welding.

The housing unit 20 forms an outer frame for containing the combustion unit 10.
In the first embodiment, as shown in FIGS. 1 to 3, an iron plate (steel plate) is used to form a vertically long rectangular parallelepiped having a cavity inside to form a housing unit 20.
More specifically, as shown in FIG. 1 to FIG. 3, a hollow is internally formed by using the top plate 21, the bottom plate 22, the front plate 23, the back plate 24, the left side plate 25 and the right side plate 26. A vertically-long rectangular parallelepiped is formed. The top plate 21, the bottom plate 22, the front plate 23, the back plate 24, the left side plate 25 and the right side plate 26 are all made of iron plates (steel plates).

Further, as shown in FIGS. 2 and 3, the top plate 21 is provided with a lid F which can be opened and closed. Further, the lid F is provided with a knob convex portion F1 for facilitating the opening and closing of the lid F. When opening and closing the lid F, the knob convex portion F1 is held.
Further, as shown in FIG. 2, the top plate 21 is configured to be detachable via a screw N.

  Further, as shown in FIG. 3, a support leg 50 for supporting the housing 20 and seating the housing 20 is attached to the bottom plate 22.

As shown in FIGS. 1 to 3, the front plate 23 is provided with an air intake port 23 a formed by penetrating the front plate 23. Further, on the inner side of the front plate 23 corresponding to the air intake port 23a, an air guiding plate 23b for guiding the taken-in air in the direction of the heat resistant glass 23g is provided. Further, below the air intake port 23a, a to-be-burned object input port 23c for inserting a crucible is provided by penetrating the front plate 23. Further, above the air intake port 23a, a cooking port 23d for introducing a food into the cooking section 40 is provided by penetrating the front plate 23. At a position corresponding to the air intake port 23a, a slide plate 23e for freely opening and closing the air intake port 23a is provided.
The air guiding plate 23b and the slide plate 23e are formed of an iron plate (steel plate). Of course, the invention is not limited to an iron plate (steel plate), and other materials may be used.

The door 23f, the heat-resistant glass 23g contained in the door 23f, the hinge 23h for opening and closing the door 23f, and the door 23f are used on the outside of the front plate 23 corresponding to the burnt-in inlet 23c. A door opening / closing handle 23i, a fixing 23j for rotatably fixing the door opening / closing handle 23i to the door 23f, and a door opening / closing handle receiver 23k for receiving the door opening / closing handle 23i are provided.
The door 23f, the door opening and closing handle 23i, and the door opening and closing handle receiver 23k are made of an iron plate (steel plate). Of course, the invention is not limited to an iron plate (steel plate), and other materials may be used.

Further, on the outside of the front plate 23 corresponding to the cooking port 23d, a door 23l, a heat resistant glass 23m contained in the door 23l, a hinge 23n for opening and closing the door 23l, and opening and closing the door 23l There are provided a handle 23p, a fixture 23q for rotatably fixing the door opening / closing handle 23p to the door 23l, and a door opening / closing handle holder 23r for receiving the door opening / closing handle 23p.
The door 23l, the door opening and closing handle 23p, and the door opening and closing handle receiver 23r are made of an iron plate (steel plate). Of course, the invention is not limited to an iron plate (steel plate), and other materials may be used.

As shown in FIG. 1 (b), FIG. 2, and FIG. 3, the rear plate 24 has a smoke outlet 24 a for discharging smoke from the housing 20 and a smoke for connecting the smoke exhaust unit 30. A connecting pipe 24b is provided.
In the present embodiment, the smoke connecting member 24b is formed by attaching a substantially L-shaped pipe formed of an iron plate (steel plate) made of the same material as the rear plate 24 to the smoke outlet 24a.
The shape, size, and thickness of the exhaust gas connection pipe 24b are not limited to those in the present embodiment, and can be changed as appropriate.

The smoke exhaust unit 30 is a so-called chimney for releasing smoke and the like discharged from the housing unit 20 to the outside. In the present embodiment, a tubular body made of stainless steel is used as the smoke exhaust unit 30. Moreover, it is set as the structure which inserts the smoke exhaust part 30 in the smoke exhaust connection pipe 24b. Furthermore, although not shown, the smoke exhaust unit 30 is provided with an exhaust damper generally provided in a wood stove.
The shape, size, and length of the smoke exhaust unit 30 are not limited to those in the present embodiment, and can be changed as appropriate.
Further, the material of the smoke exhaust unit 30 is not limited to stainless steel, and may be configured using another material such as an iron plate (steel plate).

The cooking unit 40 is a room for cooking various food materials using heat accumulated in the housing 20.
In the first embodiment, as shown in FIG. 3, the cooking unit 40 is formed by arranging a box in which only the cooking port 23 d side is opened inside the front plate 23 corresponding to the cooking port 23 d. As a configuration.
In the first embodiment, the cooking unit 40 is formed using an iron plate (steel plate). Of course, the raw material which comprises the cooking part 40 is not restricted to an iron plate (steel plate), and can be changed suitably.
Further, the shape, size, thickness, and arrangement position of the cooking section 40 are not limited to those in the present embodiment, and can be changed as appropriate.

The support leg portion 50 is for supporting the housing portion 20 and for seating the housing portion 20 on a floor surface or the like. Although not shown in detail, in the present embodiment, the support legs 50 formed of an elongated cylindrical body are disposed in the square of the bottom plate 22.
Further, in the present embodiment, an iron rod is used as the support leg portion 50.
In addition, the shape of the support leg part 50, length, an arrangement position, and a number are not restricted to the thing of this embodiment, It can change suitably.

  The combustion apparatus 1 according to the first embodiment of the present invention configured as described above has the following effects.

By providing the secondary combustion chamber 12 with the resistance mechanism 60 for giving flow resistance to the combustible gas flowing in the secondary combustion chamber 12, the combustible gas and heat generated in the primary combustion chamber 11 can be It can be made to stay effectively. Therefore, the resistance mechanism 60 and the secondary combustion chamber 12 can be rapidly heated. As a result, the flammable gas and the oxygen pass through the resistance mechanism 60 heated to a high temperature and the secondary combustion chamber 12 to generate a turbulent air flow (rising air flow), thereby strongly promoting the oxidation. Therefore, the fuel efficiency of the combustible gas can be effectively improved.
Further, by causing all of the combustible gas, heat, etc. passing through the primary combustion chamber 11 to pass through the secondary combustion chamber 12, the resistance mechanism 60 and the secondary combustion chamber 12 can be heated up more quickly. .
Furthermore, by providing the resistance mechanism 60, not only can the temperature of the secondary combustion chamber 12 be raised quickly, but also after the secondary combustion chamber 12 reaches the peak temperature, the secondary combustion chamber 12 can be operated. Can be effectively maintained. Therefore, even with a small flame, a large updraft can be generated stably in the secondary combustion chamber 12. Therefore, even a small flame can slowly maintain the combustion, which makes it possible to provide the combustion apparatus 1 capable of dramatically improving the fuel efficiency. Therefore, it can be set as the combustion apparatus 1 (furnace stove) which can provide a long-time combustion and comfortable heating temperature. In other words, an easy-to-use combustion device 1 (stove stove) with little temperature change can be obtained. Specifically, when the flame in the secondary combustion chamber 12 becomes small (so-called low-fired) due to the burning of the firewood, the exhaust damper is squeezed in order to cause the warmed air to stay in the combustion apparatus 1 Even when the supply of fresh air is reduced (by reducing the displacement), by providing the resistance mechanism 60 in the secondary combustion chamber 12, the high temperature state of the secondary combustion chamber 12 is effectively maintained. be able to. Therefore, in the combustion apparatus 1 according to the first embodiment of the present invention, a large updraft can be generated stably in the secondary combustion chamber 12 even in the state where the exhaust damper is squeezed (the displacement is reduced). And even small flames can maintain combustion slowly. On the other hand, conventional wood stoves called rocket stoves do not have any configuration capable of maintaining the high temperature state of the secondary combustion chamber, so in the state where the exhaust damper is squeezed (the displacement is reduced) Since the amount of air drawn into the combustion device is reduced, the force of the rising air flow in the secondary combustion chamber is weakened, and a large rising air flow can not be generated stably. In order to prevent this, it is necessary to open the exhaust damper and suck fresh air into the apparatus to enlarge the flame. However, when the exhaust damper is open, although the flame becomes large, the heated air is vigorously exhausted out of the apparatus and the inside of the apparatus is air-cooled, so it is necessary to continue to newly input a weir as fuel. The That is, in a conventional wood stove called a rocket stove, it is difficult to maintain combustion gently with a small flame, and there is a problem that fuel efficiency is poor. On the other hand, the combustion apparatus 1 according to the first embodiment of the present invention can gently maintain the combustion with a small flame by providing the resistance mechanism 60, thereby dramatically improving the fuel efficiency. It can be set as the combustion apparatus provided with the outstanding effect which is not in the prior art of being able to.

  Further, by providing the resistance mechanism 60 with the secondary combustion chamber 12 so as to be detachable, the resistance mechanism 60 is exposed to high temperature, thereby becoming a part where the wear by heat becomes severe, however, the worn resistance Only the mechanism 60 can be easily replaced. Therefore, the combustion apparatus 1 can be used for a long time.

  Further, the resistance mechanism 60 is provided with a spiral contact resistance piece 61 a which is disposed at an angle intersecting the combustible gas flowing in the secondary combustion chamber 12 and contacts the combustible gas, thereby flowing in the secondary combustion chamber 12. The flammable gas can be reliably brought into contact with the spiral contact resistance piece 61a. Therefore, the combustion apparatus 1 can be made capable of retaining the combustible gas more efficiently in the resistance mechanism 60.

Further, the resistance mechanism 60 includes the main body portion 61 formed of a cylindrical body provided with the spiral contact resistance piece 61a on the inner circumferential surface, so that the combustible gas, heat, etc. Can pass through the cylindrical body without loss. Moreover, since the resistance mechanism 60 can be made into a closed space except the entrance / exit of the combustible gas, the resistance mechanism 60 can be heated up more rapidly.
Further, by providing the support leg portion 62, the installation operation of the resistance mechanism 60 in the secondary combustion chamber 12 can be facilitated. Further, the main body portion 61 can be lifted from the bottom surface of the combustion chamber 12 by the height of the support leg portion 62, and the flammable gas and heat that have entered the secondary combustion chamber 12 efficiently flow into the resistance mechanism 60. It is possible to

  Further, the main body portion 61 passes through the main body portion 61 including the resistance mechanism 60 by disposing the clearance S in the secondary combustion chamber 12 without contacting the inner wall 12 a of the secondary combustion chamber 12. By making the flow velocity of the gas passing through the gap S faster than the flow velocity of the gas, it is possible to generate a pressure difference within the secondary combustion chamber 12. Therefore, the gas passing through the inside of the main body portion 61 is pulled by the flow of the gas passing through the gap S, whereby a more efficient flow of gas can be generated in the secondary combustion chamber 12. Therefore, the combustion apparatus 1 with good combustion efficiency can be obtained.

  Further, three support leg portions 62 are arranged at equal intervals in the circumferential direction of the main body portion 61, and the three support leg portions 62 are orthogonal to the combustible gas flowing from the primary combustion chamber 11 into the secondary combustion chamber 12. By arranging at a position, so-called Karman's vortex can be generated when combustible gas or the like comes in contact with the support leg portion 62. Therefore, turbulence can be generated more efficiently in the secondary combustion chamber 12. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.

  Further, by forming the spiral contact resistance piece 61a with a spiral extending in the traveling direction of the flammable gas, the flammable gas can be generated only by passing through the resistance mechanism 60. Therefore, turbulence can be generated more efficiently in the secondary combustion chamber 12.

  Further, by setting the position of the bottom surface 61 b of the main body 61 lifted by the support leg 62 to be flush with the inner ceiling surface U of the connection chamber 13, the connection chamber 13 to the secondary combustion chamber 12 can be obtained. It is possible to effectively prevent the flowing flammable gas or the like from colliding with the side surface of the main body 61. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.

  Further, by making the top plate 21 of the housing unit 20 detachable via the screw N, the top plate 21 can be easily removed. By removing the top plate 21, the combustion device 1 can be easily cleaned in the housing unit 20. Therefore, the combustion apparatus 1 can be easily maintained.

  Further, by adopting the configuration provided with the air guiding plate 23b, it is possible to first blow the air taken into the casing 20 on the heat resistant glass 23g. Therefore, it is possible to provide the combustion device 1 capable of effectively preventing the fogging of the heat-resistant glass 23g.

Next, Modifications 1 to 6 of the combustion apparatus 1 according to the first embodiment of the present invention will be described with reference to FIGS.
Modifications 1 to 6 differ from the above-described combustion apparatus 1 according to the first embodiment of the present invention only in the configuration of the resistance mechanism. Therefore, while attaching | subjecting the same number to the same member, below, only the part different from the combustion apparatus 1 which concerns on 1st Embodiment of this invention mentioned above shall be demonstrated.

First, with reference to FIG. 5A, a first modification of the combustion apparatus 1 according to the first embodiment of the present invention will be described.
In the first modification, a plurality of flat contact resistance pieces 64 formed of a flat plate member are used as the configuration of the contact resistance pieces in addition to the plurality of the combustion devices 1 according to the first embodiment of the present invention described above The flat contact resistance pieces 64 are arranged in multiple stages in the traveling direction of the flammable gas.
More specifically, a plurality of flat contact resistance pieces 64 are arranged in the axial direction of the main portion 61 along the inner circumference of the main portion 61 in a staggered manner. Further, the flat contact resistance piece 64 is disposed in a direction orthogonal to the axial direction of the main body 61.
The flat contact resistance piece 64 is formed of a stainless steel plate. Of course, the invention is not limited to the stainless steel plate, and other materials may be used.
With the above configuration, the surface area of the contact resistance piece can be effectively expanded. As a result, combustible gas and the like passing through the resistance mechanism 60 can be more efficiently brought into contact with the contact resistance piece to be retained in the secondary combustion chamber. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.
The shape and the size of the flat contact resistance piece 64 can be appropriately changed as long as the shape and the size do not obstruct the inside of the main body 61.

Next, Modification 2 of the combustion apparatus 1 according to the first embodiment of the present invention will be described with reference to Figs. 5 (b) and 5 (c). In addition, in FIG.5 (c), the leg part 62 shall be omitted and illustrated for convenience of explanation.
The present modification 2 is a flat plate member having a circular shape in plan view and provided with one or a plurality of through holes K as the configuration of the contact resistance piece in the combustion apparatus 1 according to the first embodiment of the present invention described above. The flat contact resistance pieces 65 are used, and a plurality of flat contact resistance pieces 65 are arranged in multiple stages in the traveling direction of the flammable gas.
More specifically, a flat contact resistance piece 65 formed of a flat plate member having a circular shape in plan view is arranged along the entire circumference of the inner circumference of the main body 61. The flat contact resistance piece 65 is provided with one or more circular through holes K. Furthermore, a plurality of flat contact resistance pieces 65 are arranged in the axial direction of the main body 61. In addition, in the plurality of flat contact resistance pieces 65 provided in multiple stages, the sizes of the through holes K provided in the flat contact resistance pieces 65 adjacent to each other in the top and bottom are made different in size.
Furthermore, as shown in FIG. 5 (b), the inner wall I of the through hole K is provided in the direction orthogonal to the upper surface and the lower surface of the flat contact resistance piece 65. Of course, the present invention is not limited to such a configuration, and the inner wall I of the through hole K may be provided in a direction inclined with respect to the upper surface and the lower surface of the flat contact resistance piece 65.
The flat contact resistance piece 65 is formed of a stainless steel plate. Of course, the invention is not limited to the stainless steel plate, and other materials may be used.
With the above configuration, the combustible gas passing through the resistance mechanism 60 can be more efficiently brought into contact with the contact resistance piece, and can be retained in the secondary combustion chamber. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.
The shape, size, number, and arrangement position of the through holes K provided in the flat contact resistance piece 65 are not limited to those of this modification, and can be changed as appropriate.

Next, with reference to FIGS. 6 (a) and 6 (b), a third modification of the combustion apparatus 1 according to the first embodiment of the present invention will be described. In FIG. 6 (b), for convenience of explanation, the leg portion 62 is omitted and illustrated.
The present modification 3 is configured of a flat plate member having a circular shape in plan view and having a through hole K at the center as the configuration of the contact resistance piece with respect to the combustion apparatus 1 according to the first embodiment of the present invention described above. The flat contact resistance pieces 66 are used, and a plurality of flat contact resistance pieces 66 are arranged in multiple stages in the traveling direction of the combustible gas.
More specifically, a flat contact resistance piece 66 formed of a flat plate member circular in plan view and having a through hole K at the center is disposed along the entire inner circumference of the main body 61. Further, a plurality of flat contact resistance pieces 66 are arranged in the axial direction of the main body 61.
Furthermore, as shown in FIG. 6A, the inner wall I of the through hole K is provided in the direction orthogonal to the upper surface and the lower surface of the flat contact resistance piece 66. Of course, the present invention is not limited to such a configuration, and the inner wall I of the through hole K may be provided in a direction inclined with respect to the upper surface and the lower surface of the flat contact resistance piece 66.
The flat contact resistance piece 66 is formed of a stainless steel plate. Of course, the invention is not limited to the stainless steel plate, and other materials may be used.
With the above configuration, the combustible gas passing through the resistance mechanism 60 can be more efficiently brought into contact with the contact resistance piece, and can be retained in the secondary combustion chamber. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.
The shape and the size of the through hole K provided in the flat contact resistance piece 66 are not limited to those of this modification, and can be changed as appropriate.

Next, Modification 4 of the combustion apparatus 1 according to the first embodiment of the present invention will be described with reference to FIG. In addition, in FIG.6 (c), the grip part 63 originally equipped shall be illustrated for convenience of explanation.
This modification 4 uses the spiral contact resistance piece 71 as the configuration of the contact resistance piece in the combustion apparatus 1 according to the first embodiment of the present invention described above, and the spiral contact resistance piece 71 itself. The support leg portion 72 is provided on the upper surface of the lower case. Specifically, three support leg portions 72 are provided at equal intervals in the circumferential direction of the spiral contact resistance piece 71 on the spiral contact resistance piece 71 itself. That is, in the fourth modification, there is no cylindrical body (main body portion) including the spiral contact resistance piece 71, and the spiral contact resistance piece 71 itself serves as the main body portion of the resistance mechanism 70.
The spiral contact resistance piece 71 is formed of a stainless steel plate. Of course, the invention is not limited to the stainless steel plate, and other materials may be used.
By employing the above-described configuration, it is possible to provide a combustion apparatus that can simultaneously achieve improvement in combustion efficiency and cost savings. Further, the combustible gas and heat passing through the resistance mechanism 70 can be configured so as not to be excessively retained in the resistance mechanism 70. Therefore, the thermal abrasion of the resistance mechanism 70 can be effectively reduced, and a highly durable resistance mechanism can be obtained.
The shape, size, and thickness of the spiral contact resistance piece 71 are not limited to those of this modification, and can be changed as appropriate.

Next, with reference to FIG. 7A, a fifth modification of the combustion apparatus 1 according to the first embodiment of the present invention will be described. In FIG. 7A, for convenience of explanation, the main body portion constituted by a cylindrical body, the support leg portion, and the grip portion which are originally provided are omitted and illustrated. That is, only the contact resistance piece which becomes a principal part shall be illustrated.
The present modification 5 is different from the above-described combustion apparatus 1 according to the first embodiment of the present invention in that four twisted plate-like contact resistance pieces 81 to torsion plate-like contact resistance pieces are used as the contact resistance pieces. The contact resistance piece is formed by combining 84 in a cylindrical shape. The twisted plate-like contact resistance piece 81 to the torsional plate-like contact resistance piece 84 are all formed of stainless steel.
Here, "a twisted plate-like contact resistance piece" means a twisted plate-like body having a twist in at least one of the longitudinal direction and the short direction of the contact resistance piece. In the present embodiment, all the four twisted plate-like contact resistance pieces 81 to 84 are configured to be twisted in the longitudinal direction.
In addition to the fact that the surface area of the contact resistance piece can be effectively expanded, the combustible gas and the like can be effectively retained at the twisted portion by adopting the configuration as described above. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.
The direction of twisting of the plate-like contact resistance piece is not limited to that of this embodiment, and can be changed as appropriate. Further, the twisting direction is not limited to the unified one in the plurality of twisted plate-like contact resistance pieces, and the twisting direction may be different depending on each twisted plate-like contact resistance piece.
Further, the shape, size, thickness and material of the twisted plate-like contact resistance piece are not limited to those of this modification, and can be changed as appropriate.

Next, Modification 6 of the combustion apparatus 1 according to the first embodiment of the present invention will be described with reference to FIG. In addition, in FIG.7 (b), the main-body part comprised by the cylindrical body provided originally for convenience of explanation, a support leg part, and a holding part shall be abbreviate | omitted and shown in figure. That is, only the contact resistance piece which becomes a principal part shall be illustrated.
The sixth modification uses a plurality of rod-like contact resistance pieces 91 formed of elongated rod-like members as the contact resistance pieces in the combustion apparatus 1 according to the first embodiment of the present invention described above. The rod-like contact resistance pieces 91 are arranged in a plurality of parallel crosses. More specifically, a plurality of rod-like contact resistance pieces 91 are inverted by 90 degrees and laminated to form a plurality of parallel crosses in the form of parallel crosses. Further, as the rod-like contact resistance piece 91, an elongated rectangular member made of stainless steel is used.
With the above configuration, the combustible gas passing through the resistance mechanism 90 can be more efficiently contacted with the rod-like contact resistance piece 91. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.
The shape, size, thickness, number of parallel beams and material of the rod-like contact resistance piece 91 are not limited to those of this modification, and can be changed as appropriate. Further, the arrangement angles at the upper and lower ends when laminating the plurality of rod-like contact resistance pieces 91 in a well-girder shape are not limited to those in this modification, and can be changed as appropriate. For example, the second stage can be stacked 90 degrees offset to the first stage, and the third stage can be stacked offset 40 degrees to the second stage.

  Next, with reference to FIG. 8, a combustion apparatus 2 according to a second embodiment of the present invention will be described. In the combustion apparatus 2 according to the second embodiment of the present invention, the same members as those of the combustion apparatus 1 according to the first embodiment of the present invention described above, and the elements performing the same functions have the same reference numerals and the same reference numerals. The description will be omitted below.

The combustion apparatus 2 according to the second embodiment of the present invention is the same as the combustion apparatus 1 according to the first embodiment of the present invention described above in the configuration of the combustion unit 10, the housing unit 20, and the smoke exhaust unit 30. Are different from each other, and the cooking unit 40 is not provided. Specifically, in the combustion unit 10, the connection chamber is not provided. Moreover, about the housing | casing part 20, while setting it as a laterally long shape, it is set as the structure which does not provide the door etc. which accompanies the cooking part 40. FIG. Further, the smoke exhaust unit 30 is disposed on the top plate 21 of the housing unit 20.
In the following, only the combustion unit 10, which is an essential part of the present invention, will be described in detail.

As shown in FIG. 8, in the combustion apparatus 2 according to the second embodiment of the present invention, the combustion section 10 is configured using a rectangular elongated cylindrical body, and the primary combustion chamber in the combustion section 10 11 and the secondary combustion chamber 12 are continuously provided. That is, in the second embodiment, the connecting chamber is not provided. Thus, the structure which does not provide a connection chamber is also within the scope of the present invention.
Further, although not shown in detail, in the secondary combustion chamber 12, two resistance mechanisms 90 each comprising a plurality of rod-like contact resistance pieces 91 arranged in the form of parallel bars described in the sixth modification are arranged detachably. As a configuration.
Even in the case of such a configuration, in the present invention, since the secondary combustion chamber 12 is provided with the resistance mechanism 90, the secondary combustion chamber 12 can be heated rapidly. Therefore, there is no restriction in design by providing a connection room, and it can be considered as a combustion device 2 which can design freely.
That is, in the conventional so-called rocket stove, the secondary combustion chamber is covered with a heat insulating material in relation to the configuration of the secondary combustion chamber in which the combustible gas generated in the primary combustion chamber is mixed with oxygen under high temperature to promote oxidation. It was common to have a configuration that In order to burn the flammable gas efficiently, the three factors of temperature, time, and turbulence are important. In the above-mentioned conventional rocket stove, the flammable gas reaching the secondary combustion chamber rises at high speed. Therefore, it takes time to raise the temperature of the secondary combustion chamber. Therefore, in order to increase the combustion efficiency, a connection chamber connecting the primary combustion chamber and the secondary combustion chamber has been essential as a configuration for earning time to move from the primary combustion chamber to the secondary combustion chamber. Therefore, in the conventional so-called rocket stove, there is a problem that the design is limited by the presence of the connecting chamber. On the other hand, in the present invention, as described above, there is no limitation in design, and a combustion apparatus capable of free design can be obtained.
In addition, the structure which does not provide a connection chamber is not restricted to the structure of the 2nd Embodiment of the said invention, It can change suitably. For example, the secondary combustion chamber may be stacked immediately above the primary combustion chamber. Further, the resistance mechanism disposed in the secondary combustion chamber is not limited to the configuration of the resistance mechanism 90 according to the second embodiment of the present invention, and a flow resistance can be given to the flammable gas flowing in the secondary combustion chamber. As long as it is a thing, it is good also as another structure.

  In the combustion apparatus 1 according to the first embodiment of the present invention, although the leg portion 62 is provided as the configuration of the resistance mechanism 60, the leg portion 62 is not necessarily required. It is good also as composition which is not provided. For example, a convex mounting piece on which the main body portion 61 can be mounted is provided on the inner wall of the secondary combustion chamber 12, and the main combustion portion 61 is mounted on the mounting piece. Can be arranged. Alternatively, a convex hook capable of hooking the grip 63 on the inner wall of the secondary combustion chamber 12 is provided, and the grip 63 is hooked on the convex hook to resist the secondary combustion chamber 12. It can be configured to arrange the mechanism. Furthermore, the resistance mechanism may be disposed in the secondary combustion chamber 12 by mounting the resistance mechanism on the inner bottom surface of the secondary combustion chamber 12. With these configurations, it is possible to provide a combustion device capable of effectively suppressing the number of parts.

  In the main body portion 61, the diameter of the cylindrical body may be reduced from the lower end to the upper end. With such a configuration, a so-called Venturi effect can be exerted on the upper end (outlet) of the main body portion 61. Therefore, the flow velocity of the combustible gas etc. which passes the main-body part 61 can be raised effectively. Therefore, a combustion device capable of effectively improving the intake force can be provided.

In the combustion apparatus 1 according to the first embodiment of the present invention, one spiral contact resistance piece 61a is provided on the inner periphery of the main body 61. However, the present invention is not limited to such a configuration. Alternatively, a plurality of double contact resistance pieces 61 a may be provided on the inner circumference of the main body 61.
Furthermore, in the combustion apparatus 1 according to the first embodiment of the present invention, as a configuration of the spiral contact resistance piece 61a, a spiral extending in a continuous direction in the traveling direction of the combustible gas along the inner periphery of the main body 61 The configuration of the spiral contact resistance piece 61 a is not necessarily limited to such a configuration. For example, the spiral contact resistance piece 61 a may be formed by arranging a plurality of flat plates in a spiral along the inner periphery of the main body 61.

  In the embodiment of the present invention described above, although the burning stove is used as the burning stove, a so-called rocket stove is used, but the burning burning stove is not limited to the burning stove, but may be any other burning burning stove It is good also as composition.

  According to the present invention, in the combustion apparatus, since the combustion efficiency can be effectively improved, the industrial applicability in the field of the combustion apparatus is high.

DESCRIPTION OF SYMBOLS 1 combustion apparatus 2 combustion apparatus 10 combustion part 11 primary combustion chamber 11a to-be-combusted material inlet 12 secondary combustion chamber 12a inner wall 13 connection chamber 20 case part 21 top plate 22 bottom plate 23 front plate 23a air intake 23b air induction plate 23c Burned material input port 23d Cooking port 23e Slide plate 23f Door 23g Heat-resistant glass 23h Hinge 23i Handle for door opening and closing 23j Fixing device 23k Door opening and closing handle holder 23l Door 23m Heat resistant glass 23n Hinge 23p Door opening and closing handle 23q Fixation 23r Door Opening and closing handle holder 24 back plate 24a smoke outlet 24b smoke outlet pipe 25 left side plate 26 right side plate 30 smoke outlet 40 cooking unit 50 support leg 60 resistance mechanism 61 main body 61a spiral contact resistance piece 61b bottom surface 62 support Leg portion 63 Gripping portion 64 Flat contact resistance piece 65 Flat contact resistance 66 plate-like contact resistance piece 70 resistance mechanism 71 spiral contact resistance piece 72 support leg 80 resistance mechanism 81 torsion plate-like contact resistance piece 82 torsion plate-like contact resistance piece 83 torsion plate-like contact resistance piece 84 torsion plate-like contact resistance piece 90 resistance mechanism 91 bar contact resistance piece F lid F convex part for knob I inner wall K through hole N screw S gap T refractory material U inner ceiling surface

In order to achieve the above object, the combustion apparatus of the present invention is disposed downstream of the primary combustion chamber and a primary combustion chamber for igniting and burning an object to be combusted, and the combustibles in the primary combustion chamber And a secondary combustion chamber for combusting a combustible gas produced by the combustion of the fuel gas, wherein the secondary combustion chamber is provided with a flow resistance to the combustible gas flowing in the secondary combustion chamber. A cylindrical body including a mechanism on the inner peripheral surface thereof detachably provided with a contact resistance piece disposed at an angle intersecting the combustible gas flowing in the secondary combustion chamber and being in contact with the combustible gas; According to a first feature of the present invention, the fuel cell system further includes a support leg portion extending downward from the tubular body for mounting the tubular body in the secondary combustion chamber.
Further, in addition to the above first feature, the combustion apparatus of the present invention comprises a plurality of support leg portions at predetermined intervals in the circumferential direction of the cylindrical body, and a plurality of the support leg portions as a primary A second feature is that the fuel cell is disposed at a position orthogonal to the combustible gas flowing from the combustion chamber into the secondary combustion chamber.

According to the combustion apparatus of the first aspect, the primary combustion chamber for igniting and burning an object to be combusted and the downstream side of the primary combustion chamber are disposed, and the object to be combusted is burned in the primary combustion chamber. And a secondary combustion chamber for combusting the flammable gas generated by the combustion, wherein the secondary combustion chamber is provided with a resistance mechanism for providing a flow resistance to the flammable gas flowing through the secondary combustion chamber. A cylinder which is detachably provided and which is provided with a contact resistance piece disposed at an angle intersecting the combustible gas flowing in the secondary combustion chamber and in contact with the combustible gas on its inner circumferential surface, and the cylinder And a support leg for placing the tubular body in the secondary combustion chamber, and the combustible gas and heat generated in the primary combustion chamber are resisted by the resistance mechanism. It can be made to stay effectively. Therefore, it is possible to quickly raise the resistance mechanism and the secondary combustion chamber. As a result, when the flammable gas and oxygen pass through the resistance mechanism heated to a high temperature and the secondary combustion chamber, a turbulent air flow is generated, and the oxidation is strongly promoted. Therefore, the fuel efficiency of the combustible gas can be effectively improved.

The Also resistance mechanism, since the provided detachably to the secondary combustion chamber, by the resistance mechanism is exposed to a high temperature, where it is intended to heat due to wear becomes severe moiety, only easily worn resistance mechanisms It is possible to replace it with Therefore, the combustion device can be used for a long time.
Also resistance mechanism from becoming comprises a contact resistance strip in contact with the angle being disposed combustible gas crossing the combustible gas flowing through the secondary combustion chamber, the combustible gas flowing through the secondary combustion chamber The contact resistance piece can be reliably contacted. Therefore, it is possible to provide a combustion apparatus capable of retaining the flammable gas more efficiently in the resistance mechanism.
Further, the resistance mechanism includes: a cylindrical body having a contact resistance piece on its inner circumferential surface; and a support leg portion extended downward from the cylindrical body for mounting the cylindrical body in the secondary combustion chamber Furthermore, since it comprises, by setting it as a structure provided with a cylindrical body, the combustible gas and heat etc. which were heated up by the resistance mechanism can be passed through a cylindrical body without loss. Also, except for the flammable gas inlet and outlet, the resistance mechanism can be a closed space. Therefore, the resistance mechanism can be raised more quickly.
Further, by providing the support leg portion, the installation work of the resistance mechanism in the secondary combustion chamber can be facilitated. In addition, the cylindrical body can be lifted from the bottom of the secondary combustion chamber by the height of the support leg, and the combustible gas, heat, etc. that has entered the secondary combustion chamber can efficiently flow into the resistance mechanism. It becomes possible.

According to the combustion apparatus of the second feature, in addition to the effects of the first feature, the support legs are provided in a plurality at predetermined intervals in the circumferential direction of the cylindrical body, and a plurality of support legs are provided. The support leg portion is disposed at a position orthogonal to the combustible gas flowing from the primary combustion chamber into the secondary combustion chamber, so that when the combustible gas or the like comes in contact with the support leg portion, so-called Can be generated. Therefore, turbulence can be generated more efficiently in the secondary combustion chamber. Therefore, the fuel efficiency of the flammable gas can be more effectively improved.

Claims (5)

  A primary combustion chamber for igniting and burning an object to be combusted, and a combustion gas which is disposed downstream of the primary combustion chamber and burns combustible gas produced by burning the object to be combusted in the primary combustion chamber A combustion apparatus comprising: a secondary combustion chamber, wherein the secondary combustion chamber is provided with a resistance mechanism for giving a flow resistance to combustible gas flowing in the secondary combustion chamber.   The combustion apparatus according to claim 1, wherein the resistance mechanism is detachably provided in the secondary combustion chamber.   The combustion apparatus according to claim 2, wherein the resistance mechanism comprises a contact resistance piece disposed at an angle intersecting the combustible gas flowing in the secondary combustion chamber and in contact with the combustible gas.   The resistance mechanism further includes a cylindrical body provided with a contact resistance piece on its inner circumferential surface, and a support leg portion extended downward from the cylindrical body to place the cylindrical body in the secondary combustion chamber. The combustion apparatus according to claim 3, comprising:   A plurality of support legs are provided at predetermined intervals in the circumferential direction of the cylindrical body, and the plurality of support legs are positioned orthogonal to the combustible gas flowing from the primary combustion chamber into the secondary combustion chamber. A combustion device according to claim 4, characterized in that it is arranged.

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