JP6360960B1 - Combustion device - Google Patents

Abstract

An object of the present invention is to provide a combustion apparatus capable of improving the combustion efficiency by effectively increasing the temperature of a secondary combustion chamber as a passage for combustible gas in a short time. A primary combustion chamber 11 for igniting a combusted material for combustion, and a combustible product that is disposed downstream of the primary combustion chamber 11 and is combusted by the combusted material being combusted in the primary combustion chamber 11. Combustion device 1 comprising a secondary combustion chamber 12 for combusting a combustible gas, comprising a resistance mechanism 60 that provides the secondary combustion chamber 12 with a flow resistance to the combustible gas flowing through the secondary combustion chamber 12. Device. [Selection] Figure 3

Description

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

2. Description of the Related Art Conventionally, various combustion apparatuses have been developed for the purpose of improving combustion efficiency in combustion apparatuses such as wood-burning stoves.
For example, a rocket mass heater (hereinafter referred to as a rocket stove) called a rocket stove is widely known as a technique that can efficiently burn woody combustibles such as firewood.

Utility Model Registration No. 3165517

The above-mentioned patent document 1 is a device related to a wood stove. A firewood is inserted vertically from the side, a side door 1-2 is attached to the side of the wood supply portion 1 that can be sealed, a combustion portion 3 is provided at the lower portion, and an upper portion of the combustion portion. The structure provided with the combustion gas raising part 4 enclosed with the heat insulating material and the heat radiating part piping 7 is disclosed. By having such a configuration, there is an advantage that combustion efficiency is good and generation of smoke can be suppressed by a strong suction force.
However, in a conventional rocket stove, the secondary combustion chamber is covered with a heat insulating material with respect to the configuration of the secondary combustion chamber that promotes oxidation by mixing the combustible gas generated in the primary combustion chamber with oxygen at a high temperature. The one with only the configuration was common.
In order to burn the combustible gas efficiently, the three elements of temperature, time, and turbulence are important. In the conventional rocket stove, the combustible gas that has reached the secondary combustion chamber rises at a high speed. Therefore, there is a problem that efficient combustion cannot be performed because time is required to raise the temperature of the secondary combustion chamber.

  Accordingly, the present invention provides a combustion apparatus that can improve the combustion efficiency by solving the above-described conventional problems and effectively increasing the temperature of the secondary combustion chamber, which is a passage for combustible gas, in a short time. Let it be an issue.

In order to achieve the above object, a combustion apparatus according to the present invention includes a primary combustion chamber that ignites a combusted material for combustion, and is disposed downstream of the primary combustion chamber, and the combusted material is disposed in the primary combustion chamber. A combustion device comprising a secondary combustion chamber for combusting a combustible gas produced by combustion of the gas, wherein the secondary combustion chamber has a resistance to provide a flow resistance to the combustible gas flowing through the secondary combustion chamber mechanism together freely comprises removably, said resistance mechanism includes a cylindrical body provided on the inner peripheral surface of the contact resistance strip in contact with the combustible gas is disposed at an angle intersecting the combustible gas flowing through the secondary combustion chamber, A first feature is that the support body includes a support leg that extends downward from the cylindrical body and mounts the cylindrical body in the secondary combustion chamber.
In addition to the first feature, the combustion apparatus of the present invention includes a plurality of support legs at predetermined intervals in the circumferential direction of the cylindrical body, and a plurality of the support legs are provided on the primary side. The second feature is that it is arranged at a position orthogonal to the combustible gas flowing into the secondary combustion chamber from the combustion chamber.

According to the combustion apparatus according to the first feature, the primary combustion chamber that ignites the combusted material and combusts is disposed downstream of the primary combustion chamber, and the combusted material is combusted in the primary combustion chamber. A combustion device comprising a secondary combustion chamber for combusting combustible gas generated by being applied to the secondary combustion chamber, a resistance mechanism for imparting flow resistance to the combustible gas flowing through the secondary combustion chamber A cylindrical body provided with a contact resistance piece on an inner peripheral surface, which is arranged at an angle intersecting with the combustible gas flowing through the secondary combustion chamber and is in contact with the combustible gas. And a supporting leg for placing the cylindrical body in the secondary combustion chamber, so that flammable gas and heat generated in the primary combustion chamber are generated by a resistance mechanism. It can be effectively retained. Therefore, the temperature of the resistance mechanism and the secondary combustion chamber can be quickly raised. As a result, the flammable gas and oxygen pass through the resistance mechanism heated to a high temperature and the secondary combustion chamber, thereby generating turbulence and strongly promoting oxidation. Therefore, fuel efficiency of combustible gas etc. can be improved effectively.

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. Therefore, it can be set as the combustion apparatus which 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 It can be made to contact a contact resistance piece reliably. Therefore, it can be set as the combustion apparatus which can make combustible gas retain in a resistance mechanism more efficiently.
The resistance mechanism includes a cylindrical body provided with a contact resistance piece on an inner peripheral surface, and a support leg portion that extends downward from the cylindrical body and places the cylindrical body in the secondary combustion chamber. Since it is further provided, by adopting a configuration including a cylindrical body, it is possible to pass through the cylindrical body without loss of flammable gas or heat that has been heated by the resistance mechanism. Further, the resistance mechanism can be a closed space except for the entrance and exit of the combustible gas. Therefore, the temperature of the resistance mechanism can be increased more quickly.
Moreover, the installation operation | work to a secondary combustion chamber of a resistance mechanism can be facilitated by setting it as a structure provided with a support leg part. 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 or heat that has entered the secondary combustion chamber can be efficiently allowed to flow into the resistance mechanism. It becomes possible.

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

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. 1 is a plan view showing a combustion apparatus according to a first embodiment of the present invention. It is a figure which shows the combustion apparatus which concerns on the 1st Embodiment of this invention, (a) is sectional drawing in the BB line direction of FIG. 2, (b) is the figure which looked at the exit part of the secondary combustion chamber from upper direction. 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 the helical form with which a resistance mechanism is equipped. 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 sectional side view of the modification 1, (b) is a sectional side view of the modification 2, c) is a plan view of a second modification. 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 sectional side view of the modification 3, (b) is a top view of the modification 3, (c). These are figures which show the principal part of the modification 4. FIG. FIG. 5 is a view showing a modification of the resistance mechanism in the combustion apparatus according to the first embodiment of the present invention, where (a) is a view showing a main part of modification 5, and (b) is a view showing a main part of 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, with reference to the drawings, a combustion apparatus according to a first embodiment of the present invention will be described for understanding of the present invention. However, the following description does not limit the present invention described in the claims.

First, with reference to FIGS. 1-4, the combustion apparatus 1 which concerns on the 1st Embodiment of this invention is demonstrated.
With reference to FIG. 1, the combustion apparatus 1 which concerns on the 1st Embodiment of this invention is a wood-burning stove called what is called a rocket stove.
As shown in FIGS. 1 to 4, the combustion device 1 includes a combustion unit 10, a casing unit 20, a smoke exhaust unit 30, a cooking unit 40, a support leg 50, and a resistance mechanism 60. Is done.

The combustor 10 is for burning soot as a combusted material and burning combustible gas generated from the soot. 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 combustion section 10 is formed in a J-shaped form of alphabet in a side view, which is a general shape in a so-called rocket stove. More specifically, the combustion section 10 is configured by using an stainless steel plate and an iron plate (steel plate) to form an alphabetic J-shaped box having a cavity inside.
Here, “a combustible gas generated from firewood” means a combustible gas generated by burning firewood that is wood.

The primary combustion chamber 11 is a chamber for introducing soot as a combusted material and performing ignition by ignition.
In the present embodiment, the primary combustion chamber 11 is formed in the upright portion on the short side in the combustion portion 10 configured in an alphabetic J shape in a side view. In the present embodiment, the primary fuel chamber 11 is formed of an iron plate (steel plate).
As shown in FIG. 3, in the primary combustion chamber 11, a combustible material inlet 11 a formed by penetrating an iron plate (steel plate) is provided at a place where the soot is introduced.
The shape, thickness, size, material, and the like of the primary combustion chamber 11 are not limited to those of the present embodiment, and can be changed as appropriate.

The secondary combustion chamber 12 is disposed on the downstream side of the primary combustion chamber 11 with the connecting chamber 13 interposed therebetween, and is a chamber for burning combustible gas generated by burning soot in the primary combustion chamber 11. is there. More specifically, it is a room for mixing and oxidizing a combustible gas and air.
In the present embodiment, the secondary combustion chamber 12 is formed in the upright portion on the long side in the combustion section 10 configured in an alphabetic J shape in a side view.
In the present embodiment, the secondary combustion chamber 12 is formed of an iron plate (steel plate). In addition, a portion of the secondary combustion chamber 12 where the main body 61 of the resistance mechanism 60 serving as a high temperature portion is disposed has a double structure in which a stainless steel plate is disposed on the inner side and an iron plate (steel plate) is disposed on the outer side. is there. Moreover, the cavity part produced between the stainless steel plate arrange | positioned doubly and an iron plate (steel plate) is filled with the refractory material T formed with the mixture of a pearlite and a castable.
The refractory material T is not limited to a mixture of pearlite and castable, and can be appropriately changed.
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 the present embodiment. It is not limited and can be changed as appropriate. For example, the secondary combustion chamber 12 may have a circular shape in plan view. That is, the shape of the secondary combustion chamber 12 may be any shape as long as it is a cylindrical body that can keep warm. Furthermore, the thickness, size, material, and the like of the secondary combustion chamber 12 are not limited to those of the present embodiment, and can be changed as appropriate.

The connection chamber 13 is a room for connecting the primary combustion chamber 11 and the secondary combustion chamber 12.
In the present embodiment, a connecting chamber 13 is formed at a horizontal portion in the combustion portion 10 configured in an alphabetic J shape 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 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, but may be configured to use other materials as long as it has durability, heat resistance, and the like. In particular, as the material of the secondary combustion chamber, for example, ceramics such as refractory bricks, clay, and refractory cement can be used. By setting it as such a structure, it can be set as the secondary combustion chamber with much higher heat resistance.

In the first embodiment, a resistance mechanism 60 is detachably disposed in the secondary combustion chamber 12 as shown in FIG. More specifically, the resistance mechanism 60 is detachably mounted in the secondary combustion chamber 12 where all the combustible gas and heat passing through the primary fuel chamber 11 pass.
The resistance mechanism 60 is for giving a flow resistance to the combustible gas flowing through the secondary combustion chamber 12. In other words, the combustible gas flowing through the secondary combustion chamber 12 is a means for causing turbulent air flow while retaining the heat in the secondary combustion chamber 12 and keeping the temperature.
In the present embodiment, as shown in FIGS. 3 and 4, the resistance mechanism 60 includes a main body portion 61, support leg portions 62, and a grip portion 63.

The main body 61 serves to form the skeleton of the resistance mechanism 60 and to perform the main function.
In the first embodiment, as shown in FIGS. 3 and 4, the main body portion 61 is constituted by a cylindrical body formed of a stainless steel plate.
Further, along the inner periphery of the main body 61, a spiral contact resistance piece 61a that is disposed at an angle intersecting with the combustible gas flowing through the secondary combustion chamber 12 and is in contact with the combustible gas is disposed. More specifically, a continuous portion of the combustible gas in the traveling direction is formed along the inner periphery of the main body 61 so that a cavity is formed in the central portion of the main body 61 along the longitudinal direction of the main body 61. An extending spiral body is arranged, and this spiral body is used as a spiral contact resistance piece 61a. Here, the “angle intersecting with the combustible gas” is preferably configured to intersect with the traveling direction of the combustible 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 combustible gas.
The spiral contact resistance piece 61a is formed of a stainless steel plate. Furthermore, in this embodiment, as the configuration of the spiral contact resistance piece 61a, the spiral contact resistance piece 61a wound a plurality of times has the same thickness at all positions. Of course, it is not restricted to such a structure. For example, in the spiral contact resistance piece 61a wound a plurality of times, the first and second volumes may have different thicknesses.
Moreover, the main-body part 61 and the helical contact resistance piece 61a are not restricted to a stainless steel plate, In particular, as long as it has durability and heat resistance, it is good also as a structure which uses another raw material. For example, ceramics such as refractory bricks, clay, and refractory cement can be used.
Further, in the present embodiment, as shown in FIG. 3, the main body 61 is arranged in the secondary combustion chamber 12 with a gap S without contacting the inner wall 12 a of the secondary combustion chamber 12.
Note that the shape, size, thickness, and the like of the main body 61 and the spiral contact resistance piece 61a are not limited to those of the present embodiment, and can be changed as appropriate. However, it is desirable that the thickness of the main body 61 and the spiral contact resistance piece 61a is about 3 mm to 4 mm, and has a certain thickness. With such a configuration, the main body 61 and the helical contact resistance piece 61a can be kept at a high temperature for a certain period of time even after the burning of the soot is terminated. Therefore, at the time of the next combustion, it becomes possible to quickly raise the temperature of the main body 61 and the spiral contact resistance piece 61a, and a combustion apparatus capable of effectively suppressing the generation of smoke accompanying unburned combustible gas. 1 can be used.

The support leg 62 extends downward from a main body 61 formed of a cylindrical body, and places the main body 61 with a space from the inner bottom surface of the secondary combustion chamber 12. It is for supporting.
In the present embodiment, the support leg 62 is formed of an elongated flat plate-like stainless steel plate. 3 and 4B, three support leg portions 62 are provided at predetermined intervals (equal intervals) in the circumferential direction of the main body portion 61 formed of a cylindrical body. At the same time, the three support legs 62 are arranged 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 configured to be flush with the inner ceiling surface U of the connection chamber 13.
Note that the material, shape, size, length, and number of the support legs 62 are not limited to those of the present embodiment, and can be changed as appropriate. However, preferably, the number is three or more, and it is desirable to have a configuration in which a predetermined interval is 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 this embodiment, as shown in part of FIG. 4A, a stainless steel rod-shaped member curved in a substantially U shape is used. 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 uppermost part.

  In addition, the helical contact resistance piece 61a, the support leg part 62, and the holding part 63 which were already described can be attached to the main-body part 61, for example using welding.

The housing part 20 forms an outer frame for containing the combustion part 10.
In this 1st Embodiment, as shown in FIGS. 1-3, it is set as the structure which forms the elongate rectangular parallelepiped which has a cavity inside using an iron plate (steel plate), and makes it the housing | casing part 20. As shown in FIG.
More specifically, as shown in FIGS. 1 to 3, a cavity is formed inside using a top plate 21, a bottom plate 22, a front plate 23, a rear plate 24, a left side plate 25, and a right side plate 26. A vertically long rectangular parallelepiped is formed. The top plate 21, the bottom plate 22, the front plate 23, the rear plate 24, the left side plate 25, and the right side plate 26 are all made of iron plates (steel plates).

The top plate 21 is provided with a lid F that can be opened and closed as shown in FIGS. Further, the lid F is provided with a knob projection F1 for facilitating opening and closing of the lid F. When the lid F is opened and closed, this knob convex portion F1 is grasped.
As shown in FIG. 2, the top plate 21 is configured to be detachable via screws N.

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

As shown in FIGS. 1 to 3, the front plate 23 is provided with an air intake port 23 a that penetrates the front plate 23. An air guide plate 23b for guiding the taken-in air in the direction of the heat-resistant glass 23g is provided inside the front plate 23 corresponding to the air intake port 23a. Further, a combustible material input port 23c for supplying soot is provided below the air intake port 23a by penetrating the front plate 23. In addition, a cooking port 23d is provided above the air intake port 23a to allow food to be introduced into the cooking unit 40 by penetrating the front plate 23. Further, a slide plate 23e is provided at a position corresponding to the air intake port 23a so that the air intake port 23a can be opened and closed.
The air guide plate 23b and the slide plate 23e are composed of iron plates (steel plates). Of course, it is not restricted to an iron plate (steel plate), and other materials may be used.

Also, on the outside of the front plate 23 corresponding to the combustible material inlet 23c, a door 23f, a heat-resistant glass 23g included in the door 23f, a hinge 23h that allows the door 23f to be opened and closed, and used for opening and closing the door 23f. There are provided a door opening / closing handle 23i, a fixing tool 23j for rotatably fixing the door opening / closing handle 23i to the door 23f, and a door opening / closing handle holder 23k for receiving the door opening / closing handle 23i.
The door 23f, the door opening / closing handle 23i, and the door opening / closing handle holder 23k are made of an iron plate (steel plate). Of course, it is not restricted 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 included in the door 23l, a hinge 23n that allows the door 23l to be opened and closed, and a door opening and closing used when the door 23l is opened and closed. A handle 23p, a fixing tool 23q for pivotally 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 are provided.
The door 231, the door opening / closing handle 23 p, and the door opening / closing handle holder 23 r are made of an iron plate (steel plate). Of course, it is not restricted to an iron plate (steel plate), and other materials may be used.

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

The smoke exhaust unit 30 is a so-called chimney for releasing smoke discharged from the housing unit 20 to the outdoors. In the present embodiment, the smoke exhaust unit 30 is configured to use a cylindrical body formed of stainless steel. In addition, the smoke exhaust part 30 is fitted into the smoke exhaust connection pipe 24b. Furthermore, although not shown in figure, the exhaust part 30 is provided with the exhaust damper with which a wood stove is generally equipped.
Note that the shape, size, and length of the smoke exhaust section 30 are not limited to those of the present embodiment, and can be changed as appropriate.
Further, the material of the smoke exhausting part 30 is not limited to stainless steel, and another material such as an iron plate (steel plate) may be used.

The cooking unit 40 is a room for cooking various foodstuffs 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 body that is open only on the cooking port 23 d side inside the front plate 23 corresponding to the cooking port 23 d. It is as composition to do.
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), It can change suitably.
Further, the shape, size, thickness, and arrangement position of the cooking unit 40 are not limited to those of the present embodiment, and can be changed as appropriate.

The support legs 50 are for supporting the casing 20 and for seating the casing 20 on a floor surface or the like. Although not shown in detail, in the present embodiment, the support leg 50 formed of an elongated columnar body is arranged on the square of the bottom plate 22.
Moreover, in this embodiment, it is set as the structure which uses an iron bar as the support leg part 50. FIG.
The shape, length, arrangement position, and number of the support legs 50 are not limited to those of the present embodiment, and can be changed as appropriate.

  The combustion device 1 according to the first embodiment of the present invention having such a configuration has the following effects.

By configuring the secondary combustion chamber 12 to have a resistance mechanism 60 that imparts flow resistance to the combustible gas flowing through the secondary combustion chamber 12, the resistance mechanism 60 allows combustible gas and heat generated in the primary combustion chamber 11 to flow. It can be effectively retained. Therefore, the resistance mechanism 60 and the secondary combustion chamber 12 can be quickly heated. As a result, the flammable gas and the oxygen flow through the resistance mechanism 60 and the secondary combustion chamber 12 heated to a high temperature, thereby generating a turbulent air flow (updraft) and strongly promoting oxidation. Therefore, fuel efficiency of combustible gas etc. can be improved effectively.
Further, the resistance mechanism 60 and the secondary combustion chamber 12 can be heated more quickly by adopting a configuration in which the entire amount of combustible gas and heat passing through the primary combustion chamber 11 is passed through the secondary combustion chamber 12. .
Further, by providing the resistance mechanism 60, not only can the temperature of the secondary combustion chamber 12 be raised quickly, but even after the secondary combustion chamber 12 reaches the peak temperature, the secondary combustion chamber 12 The high temperature state of can be effectively maintained. Accordingly, even a small flame can stably generate a large upward air flow in the secondary combustion chamber 12. Therefore, even with a small flame, the combustion can be maintained gently, whereby the combustion apparatus 1 capable of dramatically improving fuel efficiency can be obtained. Therefore, it can be set as the combustion apparatus 1 (wood-burning stove) which can provide long-time combustion and comfortable heating temperature. In other words, it is possible to provide an easy-to-use combustion apparatus 1 (a wood stove) with little temperature change. Specifically, when the flame in the secondary combustion chamber 12 is reduced due to burning of soot (so-called sparkling), the exhaust damper is throttled to retain the warmed air in the combustion device 1. Even when the supply of new air is reduced (decreasing the displacement), the high-temperature state of the secondary combustion chamber 12 is effectively maintained by providing the resistance mechanism 60 in the secondary combustion chamber 12. be able to. Therefore, in the combustion apparatus 1 according to the first embodiment of the present invention, a large ascending airflow is stably generated in the secondary combustion chamber 12 even when the exhaust damper is throttled (the exhaust amount is reduced). It is possible to maintain combustion gradually even with a small flame. On the other hand, a conventional wood stove called a rocket stove does not have a configuration capable of maintaining the high temperature state of the secondary combustion chamber at all, so in a state where the exhaust damper is throttled (the exhaust amount is reduced) Since the amount of air sucked into the combustion device is reduced, the force of the ascending air current in the secondary combustion chamber becomes weak, and a large ascending air current cannot be generated stably. In order to prevent this, it is necessary to enlarge the flame by opening the exhaust damper and sucking new air into the apparatus. However, when the exhaust damper is opened, the flame becomes large, but the warmed air is exhausted out of the device and the inside of the device is cooled by air, so it is necessary to continue to add soot as fuel. It was. In other words, a conventional wood stove called a rocket stove has a problem that it is difficult to maintain combustion gently with a small flame, and fuel efficiency is poor. On the other hand, the combustion apparatus 1 according to the first embodiment of the present invention includes the resistance mechanism 60, so that the combustion can be maintained gently with a small flame, thereby dramatically improving fuel efficiency. Thus, the combustion apparatus can be provided with an excellent effect that cannot be achieved by the conventional technology.

  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 a high temperature and becomes a portion where the wear due to heat is severe. Only the mechanism 60 can be easily replaced. Therefore, it can be set as the combustion apparatus 1 which can be used for a long term.

  In addition, the resistance mechanism 60 includes a spiral contact resistance piece 61 a that is disposed at an angle intersecting with the combustible gas flowing through the secondary combustion chamber 12 and is in contact with the combustible gas, thereby flowing through the secondary combustion chamber 12. The combustible gas can be reliably brought into contact with the spiral contact resistance piece 61a. Therefore, it can be set as the combustion apparatus 1 which can make combustible gas retain in the resistance mechanism 60 more efficiently.

In addition, the resistance mechanism 60 includes a main body portion 61 formed of a cylindrical body having a spiral contact resistance piece 61a on the inner peripheral surface thereof, so that the flammable gas, heat, etc. heated by the resistance mechanism 60 are provided. Can pass through the cylindrical body without loss. Moreover, since the resistance mechanism 60 can be made into a closed space except for the entrance and exit of the combustible gas, the resistance mechanism 60 can be raised in temperature more quickly.
Moreover, by setting it as the structure provided with the support leg part 62, the installation operation | work to the secondary combustion chamber 12 of the resistance mechanism 60 can be made easy. Further, the main body 61 can be lifted from the bottom surface of the combustion chamber 12 by the height of the support leg 62, and combustible gas or heat that has entered the secondary combustion chamber 12 efficiently flows into the resistance mechanism 60. It becomes possible to make it.

  Further, the main body 61 is disposed in the secondary combustion chamber 12 with a gap S without contacting the inner wall 12a of the secondary combustion chamber 12, so that the main body 61 passes through the main body 61 including the resistance mechanism 60. Since the flow velocity of the gas passing through the gap S becomes faster than the flow velocity of the gas to be generated, a difference in atmospheric pressure can be generated in the secondary combustion chamber 12. Therefore, when the gas passing through the main body 61 is pulled by the gas flow passing through the gap S, a more efficient gas flow can be generated in the secondary combustion chamber 12. Therefore, the combustion apparatus 1 with good combustion efficiency can be obtained.

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

  In addition, by configuring the spiral contact resistance piece 61a with a spiral body that extends in the traveling direction of the combustible gas, it is possible to generate a vortex only by passing the combustible gas or the like through the resistance mechanism 60. Therefore, turbulence can be generated more efficiently in the secondary combustion chamber 12.

  In addition, the position of the bottom surface 61 b of the main body 61 that is lifted by the support leg 62 is configured to be flush with the inner ceiling surface U of the connection chamber 13, so that the connection chamber 13 moves to the secondary combustion chamber 12. The flowing combustible gas or the like can be effectively prevented from colliding with the side surface of the main body 61. Therefore, the fuel efficiency of combustible gas can be improved more effectively.

  Moreover, the top plate 21 can be easily removed by making the top plate 21 of the housing 20 detachable via the screw N. By removing the top plate 21, the combustion apparatus 1 capable of easily cleaning the inside of the housing unit 20 can be obtained. Therefore, the combustion apparatus 1 can be easily maintained.

  Moreover, it becomes possible to blow the air taken in into the housing | casing part 20 first to the heat-resistant glass 23g by setting it as the structure provided with the air guide plate 23b. Therefore, it can be set as the combustion apparatus 1 which can prevent fogging of the heat-resistant glass 23g effectively.

Next, with reference to FIGS. 5 to 7, modified examples 1 to 6 of the combustion apparatus 1 according to the first embodiment of the present invention will be described.
Modifications 1 to 6 are different from the combustion apparatus 1 according to the first embodiment of the present invention described above only in the structure of the resistance mechanism. Therefore, the same number is attached to the same member, and only the parts different from the combustion apparatus 1 according to the first embodiment of the present invention described above will be described below.

First, referring to FIG. 5 (a), a first modification of the combustion apparatus 1 according to the first embodiment of the present invention will be described.
The first modification uses a flat contact resistance piece 64 formed of a flat plate member 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 plate-like contact resistance pieces 64 are arranged in multiple stages in the traveling direction of the combustible gas.
More specifically, a plurality of flat contact resistance pieces 64 are arranged along the inner periphery of the main body 61 so as to be stepped in the axial direction of the main body 61. Further, the flat contact resistance piece 64 is arranged 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 material is not limited to the stainless steel plate, and other materials may be used.
By setting it as the above structures, it becomes possible to expand the surface area of a contact resistance piece effectively. As a result, the combustible gas passing through the resistance mechanism 60 can be more efficiently brought into contact with the contact resistance piece and retained in the secondary combustion chamber. Accordingly, the fuel efficiency of the combustible gas can be further effectively improved.
The shape and size of the flat contact resistance piece 64 can be appropriately changed as long as the shape and size do not block the inside of the main body 61.

Next, with reference to FIG.5 (b) and FIG.5 (c), the modification 2 of the combustion apparatus 1 which concerns on the 1st Embodiment of this invention is demonstrated. In FIG. 5C, the leg portion 62 is omitted for convenience of explanation.
This modification 2 is composed of a flat plate member having a circular shape in plan view with one to a plurality of through holes K as the structure 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 piece 65 is used, and a plurality of flat contact resistance pieces 65 are arranged in multiple stages in the traveling direction of the combustible gas.
More specifically, a flat contact resistance piece 65 made of a flat plate member having a circular shape in plan view is arranged along the entire inner circumference of the main body 61. The flat contact resistance piece 65 is provided with one or more circular through holes K. Further, 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 in the vertical direction are different.
Further, as shown in FIG. 5B, the inner wall I of the through hole K is provided in a 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 material is not limited to the stainless steel plate, and other materials may be used.
By setting it as the above structures, the combustible gas etc. which pass the resistance mechanism 60 can be made to contact a contact resistance piece more efficiently, and can be made to stay in a secondary combustion chamber. Accordingly, the fuel efficiency of the combustible gas can be further 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 the present modification, and can be changed as appropriate.

Next, with reference to FIG. 6A and FIG. 6B, Modification 3 of the combustion apparatus 1 according to the first embodiment of the present invention will be described. In FIG. 6B, the leg portion 62 is omitted for convenience of explanation.
The third modification is configured by a flat plate member having a circular shape in plan view with a through-hole K at the center as a configuration of the contact resistance piece with respect to the combustion apparatus 1 according to the first embodiment of the present invention described above. While using the flat contact resistance piece 66, it is set as the structure which arrange | positions the several flat contact resistance piece 66 in multiple steps in the advancing direction of a combustible gas.
More specifically, a flat contact resistance piece 66 constituted by a flat plate member having a circular shape in plan view provided with a through hole K at the center is arranged along the entire inner circumference of the main body 61. In addition, a plurality of flat contact resistance pieces 66 are arranged in the axial direction of the main body 61.
Further, as shown in FIG. 6A, the inner wall I of the through hole K is provided in a direction orthogonal to the upper surface and the lower surface of the flat contact resistance piece 66. Of course, the configuration is not limited to this, 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 material is not limited to the stainless steel plate, and other materials may be used.
By setting it as the above structures, the combustible gas etc. which pass the resistance mechanism 60 can be made to contact a contact resistance piece more efficiently, and can be made to stay in a secondary combustion chamber. Accordingly, the fuel efficiency of the combustible gas can be further effectively improved.
The shape and size of the through hole K provided in the flat contact resistance piece 66 are not limited to those of the present modification, and can be changed as appropriate.

Next, with reference to FIG.6 (c), the modification 4 of the combustion apparatus 1 which concerns on the 1st Embodiment of this invention is demonstrated. In FIG. 6C, for the sake of convenience of explanation, the gripping portion 63 that is originally provided is omitted.
The modification 4 uses the spiral contact resistance piece 71 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, and the spiral contact resistance piece 71 itself. It is set as the structure which provides the support leg part 72 in this. Specifically, three support legs 72 are provided on the spiral contact resistance piece 71 itself at equal intervals in the circumferential direction of the spiral contact resistance piece 71. That is, in the fourth modification, there is no cylindrical body (main body part) that encloses the spiral contact resistance piece 71, and the spiral contact resistance piece 71 itself serves as the main body part of the resistance mechanism 70.
The spiral contact resistance piece 71 is formed of a stainless steel plate. Of course, the material is not limited to the stainless steel plate, and other materials may be used.
By setting it as the above structures, it can be set as the combustion apparatus which can implement | achieve improvement of combustion efficiency and cost reduction simultaneously. Further, a structure in which flammable gas or heat passing through the resistance mechanism 70 does not stay excessively in the resistance mechanism 70 can be obtained. Therefore, wear due to heat 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 the present modification, and can be changed as appropriate.

Next, with reference to Fig.7 (a), the modification 5 of the combustion apparatus 1 which concerns on the 1st Embodiment of this invention is demonstrated. In FIG. 7A, for convenience of explanation, a main body portion, a supporting leg portion, and a grip portion that are originally formed of a cylindrical body are omitted and illustrated. That is, only the contact resistance piece as the main part is illustrated.
The fifth modification is different from the combustion apparatus 1 according to the first embodiment of the present invention described above as the configuration of the contact resistance pieces, four torsion plate contact resistance pieces 81 to torsion plate contact resistance pieces. The contact resistance piece is formed by combining 84 in a cylindrical shape. Further, the twisted plate-like contact resistance piece 81 to the twisted plate-like contact resistance piece 84 are all formed of a stainless steel plate.
Here, the “twisted plate-like contact resistance piece” means a twisted plate-like body that is twisted in at least one of the longitudinal direction and the short-side direction of the contact resistance piece. In the present embodiment, the four twisted plate-like contact resistance pieces 81 to 84 are all configured to be twisted in the longitudinal direction.
By setting it as the above structures, in addition to being able to expand the surface area of a contact resistance piece effectively, combustible gas etc. can be effectively retained in a twisted part. Accordingly, the fuel efficiency of the combustible gas can be further effectively improved.
Note that the twisting direction of the twisted plate-like contact resistance piece is not limited to that of the present embodiment, and can be changed as appropriate. Further, in the plurality of twisted plate-like contact resistance pieces, the twisting direction is not limited to a unified one, and the twisting direction may be different for 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 the present modification, and can be changed as appropriate.

Next, with reference to FIG.7 (b), the modification 6 of the combustion apparatus 1 which concerns on the 1st Embodiment of this invention is demonstrated. In FIG. 7B, for convenience of explanation, a main body portion, a supporting leg portion, and a grip portion that are originally formed of a cylindrical body are omitted and illustrated. That is, only the contact resistance piece as the main part is illustrated.
The sixth modification uses a rod-shaped contact resistance piece 91 formed of an elongated rod-shaped member 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, and a plurality of them. The rod-shaped contact resistance pieces 91 are arranged in a plurality of cross beams. More specifically, the plurality of bar-shaped contact resistance pieces 91 to be stacked are inverted by 90 degrees and stacked to form a plurality of grid-shaped stacked bodies. Further, as the rod-like contact resistance piece 91, an elongated square member made of stainless steel is used.
By setting it as the above structures, the combustible gas etc. which pass the resistance mechanism 90 can be made to contact the rod-shaped contact resistance piece 91 more efficiently. Accordingly, the fuel efficiency of the combustible gas can be further effectively improved.
Note that the shape, size, thickness, number of cross beams, and material of the rod-shaped contact resistance piece 91 are not limited to those of the present modification, and can be changed as appropriate. In addition, the arrangement angle in the upper and lower stages when the plurality of rod-shaped contact resistance pieces 91 are stacked in a cross pattern is not limited to that of the present modification, and can be changed as appropriate. For example, the second stage may be stacked by shifting 90 degrees with respect to the first stage, and the third stage may be stacked by shifting 40 degrees with respect to the second stage.

  Next, with reference to FIG. 8, the combustion apparatus 2 which concerns on the 2nd Embodiment of this invention is demonstrated. In addition, in the combustion apparatus 2 which concerns on the 2nd Embodiment of this invention, the same number and the same code | symbol are shown to the same member and the same function as the combustion apparatus 1 which concerns on the 1st Embodiment of this invention mentioned above. The description will be omitted below.

The combustion device 2 according to the second embodiment of the present invention has a configuration of the combustion unit 10, the housing unit 20, and the smoke exhaust unit 30 with respect to the combustion device 1 according to the first embodiment of the present invention described above. And a configuration in which the cooking unit 40 is not provided. Specifically, the combustion unit 10 is configured not to include a connection chamber. In addition, the casing unit 20 has a horizontally long shape and is not provided with a door associated with the cooking unit 40. The smoke exhaust unit 30 is arranged on the top plate 21 of the housing unit 20.
In the following, only the combustion section 10 which is the main 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, a combustion section 10 is configured using a rectangular horizontally long cylindrical body, and a primary combustion chamber is formed in the combustion section 10. 11 and the secondary combustion chamber 12 are provided continuously. That is, in the second embodiment, the connection chamber is not provided. Thus, the structure which does not provide a connection chamber is also within the scope of the present invention.
Although not shown in detail, in the secondary combustion chamber 12, two resistance mechanisms 90 each including a plurality of rod-shaped contact resistance pieces 91 arranged in the shape of a cross-beam described in the above-described modification 6 are detachably disposed. It is as composition to do.
Even in such a configuration, the secondary combustion chamber 12 is provided with the resistance mechanism 90 in the present invention, so that the secondary combustion chamber 12 can be quickly heated. Therefore, there is no design restriction due to the provision of the connecting chamber, and the combustion apparatus 2 can be designed freely.
In other words, in a conventional so-called rocket stove, the secondary combustion chamber is covered with a heat insulating material for the configuration of the secondary combustion chamber that promotes oxidation by mixing flammable gas generated in the primary combustion chamber with oxygen at high temperature. It was common to have a configuration that only did. In order to burn the combustible gas efficiently, the three elements of temperature, time, and turbulence are important. In the conventional rocket stove, the combustible gas that has reached the secondary combustion chamber rises at a high speed. Therefore, it takes time to raise the temperature of the secondary combustion chamber. Therefore, in order to increase the combustion efficiency, a connecting chamber that connects the primary combustion chamber and the secondary combustion chamber is an essential configuration as a configuration for earning time for moving from the primary combustion chamber to the secondary combustion chamber. Therefore, the conventional so-called rocket stove has a problem that the design is limited due to the existence of the connecting chamber. On the other hand, in the present invention, as described above, there is no design restriction, and the combustion apparatus can be designed freely.
In addition, the structure which does not provide a connection chamber is not restricted to the structure of the said 2nd Embodiment of this 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 combustible gas flowing through the secondary combustion chamber. Any other configuration may be used.

  In the combustion apparatus 1 according to the first embodiment of the present invention, the leg portion 62 is provided as the configuration of the resistance mechanism 60. However, the leg portion 62 is not necessarily required. It is good also as a structure which does not provide. 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 body portion 61 is mounted on the mounting piece, whereby a resistance mechanism is provided in the secondary combustion chamber 12. It can be set as the structure which arranges. Alternatively, a convex hooking piece capable of hooking the gripping portion 63 is provided on the inner wall of the secondary combustion chamber 12, and the gripping portion 63 is hooked on the convex hooking piece to thereby resist the secondary combustion chamber 12. It can be set as the structure which arrange | positions a mechanism. Furthermore, it is good also as a structure which arrange | positions a resistance mechanism in the secondary combustion chamber 12 by mounting a resistance mechanism in the inner bottom face of the secondary combustion chamber 12. FIG. By setting it as these structures, it can be set as the combustion apparatus which can suppress a number of parts effectively.

  The main body 61 may be configured such that the diameter of the cylindrical body decreases from the lower end to the upper end. With such a configuration, a so-called Venturi effect can be exerted on the upper end (exit) of the main body 61. Therefore, the flow velocity of combustible gas etc. which passes the main-body part 61 can be raised effectively. Therefore, it can be set as the combustion apparatus which can improve intake power effectively.

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 configuration is not necessarily limited to such a configuration. A plurality of the contact resistance pieces 61 a may be provided on the inner periphery of the main body portion 61 such as double or triple.
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 body extending continuously in the traveling direction of the combustible gas along the inner periphery of the main body portion 61; However, the configuration of the spiral contact resistance piece 61a is not necessarily limited to such a configuration. For example, it is good also as a structure which forms the helical contact resistance piece 61a by arrange | positioning a several flat plate helically along the inner periphery of the main-body part 61. FIG.

  Further, in the embodiment of the present invention described above, a so-called rocket stove is used as the combustion device. However, the combustion device is not limited to the wood stove, and any other combustion device is used. It is good also as a structure.

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

DESCRIPTION OF SYMBOLS 1 Combustion device 2 Combustion device 10 Combustion part 11 Primary combustion chamber 11a Combustion material inlet 12 Secondary combustion chamber 12a Inner wall 13 Connection chamber 20 Housing | casing part 21 Top plate 22 Bottom plate 23 Front plate 23a Air intake port 23b Air induction plate 23c Combustion input port 23d Cooking port 23e Slide plate 23f Door 23g Heat resistant glass 23h Hinge 23i Door opening / closing handle 23j Fixing tool 23k Door opening / closing handle holder 23l Door 23m Heat resistant glass 23n Hinge 23p Door opening / closing handle 23q Fixing tool 23r Door Opening and closing handle holder 24 Rear plate 24a Smoke discharge port 24b Smoke exhaust pipe 25 Left side plate 26 Right side plate 30 Smoke exhaust unit 40 Cooking unit 50 Support leg unit 60 Resistance mechanism 61 Main body unit 61a Spiral contact resistance piece 61b Bottom surface 62 Support Leg part 63 Grasping part 64 Flat contact resistance piece 65 Flat contact resistance 66 flat contact resistance piece 70 resistance mechanism 71 spiral contact resistance piece 72 support leg 80 resistance mechanism 81 twist plate contact resistance piece 82 twist plate contact resistance piece 83 twist plate contact resistance piece 84 twist plate contact resistance piece 84 90 resistance mechanism 91 rod-like contact resistance piece F lid F1 knob convex part I inner wall K through hole N screw S gap T fireproof material U inner ceiling surface

Claims (2)

A primary combustion chamber for igniting the combusted material for combustion and a second combustion chamber disposed downstream of the primary combustion chamber and for combusting a combustible gas generated by combusting the combusted material in the primary combustion chamber. A combustion apparatus comprising a secondary combustion chamber, wherein the secondary combustion chamber is detachably provided with a resistance mechanism for imparting flow resistance to the combustible gas flowing through the secondary combustion chamber. A cylindrical body provided on the inner peripheral surface with a contact resistance piece arranged at an angle intersecting with the combustible gas flowing through the next combustion chamber and in contact with the combustible gas, and extending downward from the cylindrical body, A combustion apparatus comprising: a support leg for placing the body in the secondary combustion chamber . 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 disposed at a position orthogonal to the combustible gas flowing from the primary combustion chamber into the secondary combustion chamber. The combustion apparatus according to claim 1, wherein the combustion apparatus is arranged .

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