JP2000055316A - Surface combustion device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the heating and deformation of a metallic casing by the conduction of heat from a combustion surface in a surface combustion burner constituted on a combustion surface of a mat produced by laminating the fibers of heat resistant steel and sintering in the condition of a non-woven fabric. SOLUTION: In a surface combustion device, a surface combustion body 1 is constituted of a porous fabric type matter 2, consisting of the braided matter or the woven matter of fibers made of a heat resistant steel and having high venting property, and a porous reinforcing member 3, having a high venting property, which are contacted closely to each other, while the surface combustion body 1 is installed at the opening part 5 of the metallic easing 4 so that the reinforcing member 3 is positioned at the side of the box type metallic casing 4 and a first porous dispersing plate 6, having a porosity of half of that of the fabric matter 2 and the reinforcing member 3, is installed in the box type metallic easing 4 at the upstream side of the reinforcing member 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface combustion device.

[0002]

2. Description of the Related Art Conventionally, as exemplified in Japanese Patent Publication No. 67090/1992, there is a surface combustion burner in which a mat formed by laminating heat-resistant steel fibers and sintering into a nonwoven fabric is used as a combustion surface.

[0003]

In the case of the conventional example described above, practically, serious problems are revealed in the following points. That is, first, the mat produced by sintering is very hard, and it is very difficult to process it into various shapes. This is based on the fact that the use form is planar. For example, depending on the application, burners with small shapes and various shapes are required.However, a surface burning device such as a cylindrical, conical or kamaboko type having a small processing radius has a problem that cannot be manufactured with the conventional mat. is there.
Secondly, when transporting, it is necessary to carry a flat surface, make a sturdy wooden frame, store it in it and transport it, so the weight, volume and transportation cost increase. is there. Third, since the conventional mat is difficult to weld to metal, the connection to the metal casing that sends the premixed air to the burner can only be made by bolting, and a gap due to a difference in expansion coefficient is easily generated, and the air There is a big problem such as leakage. Fourth, in the conventional case, the metal casing is heated by heat conduction from the combustion surface, and is likely to be deformed.
In order to prevent this, it is necessary to insert a ceramic board or the like having a low thermal conductivity between the mat and the metal casing, and there is a problem that the manufacturing cost increases. The present invention solves the above problems and provides a combustion apparatus which can be installed in a furnace of various sizes and shapes. The combustion apparatus has extremely excellent flammability. In addition, a good flame is formed evenly over the entire combustion surface.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a method of adhering a highly permeable porous cloth made of a knitted or woven fabric of heat-resistant steel fiber to a highly permeable porous reinforcing material. To form a surface combustible body, the surface combustible body is placed in the opening of the box-shaped metal casing, and the reinforcing member is positioned and installed on the box-shaped metal casing side, and the upstream side of the reinforcing member is provided. A surface combustion device is proposed in which a first porous dispersion plate having an opening ratio lower than that of the cloth-like material and the reinforcing material by a factor of 2 or less is provided in the box-shaped metal casing.

[0005] In order to solve the above-mentioned problems, the present invention proposes a surface combustion apparatus provided with a second porous dispersion plate further upstream of the first porous dispersion plate.

In order to solve the above-mentioned problems, the present invention proposes a surface combustion device in which the first and second porous dispersion plates are curved or flat.

In order to solve the above-mentioned problems, according to the present invention, a surface burner is used to form a semi-cylindrical surface burner, and the semi-cylindrical surface burner is installed at an opening of a box-shaped metal casing. A combustion device is proposed.

In order to solve the above-mentioned problem,
In the present invention, a highly permeable porous cloth made of a knitted or woven fabric of heat-resistant steel fiber and a highly permeable porous reinforcing material are adhered to each other to form a surface burning body, and the reinforcing plate is formed by the surface burning body. Is formed inside the conical surface combustion body, and the inside of the conical surface combustion body has a tapered first member having an opening ratio lower than that of the cloth-like material and the reinforcing member by half or less. A surface burner with a hole distribution plate is proposed.

Further, in order to solve the above-mentioned problems, the present invention relates to a surface burning method in which a highly permeable porous cloth made of a heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material are adhered to each other. The surface burning body forms a cylindrical surface burning body with the reinforcing plate inside, and the inside of the cylindrical surface burning body has a higher aperture ratio than the cloth and the reinforcing material. Proposes a surface combustion apparatus in which a low-cylindrical first perforated dispersion plate having a half or less is installed.

[0010] In order to solve the above-mentioned problems, the present invention relates to a surface burning method in which a highly permeable porous cloth made of heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material are adhered to each other. The surface burning body forms a cylindrical surface burning body with the reinforcing plate inside, and the inside of the cylindrical surface burning body has a higher aperture ratio than the cloth and the reinforcing material. Proposes a surface combustion device in which a low tapered first perforated dispersion plate of less than half is installed.

[0011] In order to solve the above-mentioned problems, the present invention relates to a surface burning method in which a highly permeable porous cloth made of heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material are brought into close contact with each other. Constituting a body, by this surface burning body, forming a thin box-shaped surface burning body with the reinforcing plate inside, inside the thin box-shaped surface burning body, the cloth-like material and the reinforcing material, The present invention proposes a surface combustion device provided with a thin box-shaped first perforated dispersion plate having an opening ratio of less than half.

Further, in order to solve the above-mentioned problems, the present invention proposes a surface burning apparatus in which a cylindrical surface burning body composed of a surface burning body has a top wall also composed of a surface burning body.

[0013] In order to solve the above-mentioned problems, the present invention proposes a surface burning apparatus in which a thin box-shaped surface burning body composed of a surface burning body has a top wall also composed of a surface burning body.

Further, in order to solve the above-mentioned problem, the present invention proposes a surface combustion device in which a tapered second dispersion plate is provided inside a cylindrical first porous dispersion plate.

Further, in order to solve the above-mentioned problem, the present invention proposes a surface combustion apparatus in which a tapered second dispersion plate is provided inside a thin box-shaped first porous dispersion plate. is there.

Further, in order to solve the above-mentioned problem,
In the present invention, a highly permeable porous cloth made of a knitted or woven fabric of heat-resistant steel fiber and a highly permeable porous reinforcing material are adhered to form a surface burning body. Inside to form a hemispherical surface combustion body,
We propose a surface burning apparatus in which a tapered first porous dispersion plate having an aperture ratio lower than that of the cloth and the reinforcing material by half or less is provided inside the hemispherical surface burning body. Things.

Further, in order to solve the above-mentioned problem,
In the present invention, a highly permeable porous cloth made of a knitted or woven fabric of heat-resistant steel fiber and a highly permeable porous reinforcing material are adhered to form a surface burning body. Forming a cylindrical surface combustion body having both ends opened with the object inside, the cylindrical surface combustion body is covered with a cylindrical metal casing, and in the cylindrical metal casing, the cylindrical surface combustion body is formed. Outside the reinforcements that make up the body,
An object of the present invention is to propose a surface combustion device in which a cylindrical first perforated dispersion plate having an opening ratio lower than that of the cloth-like material and the reinforcing member by half or less is provided.

Further, in order to solve the above-mentioned problem,
The present invention proposes a surface combustion device in which a mixture mixture introduction section is provided on a side wall of a cylindrical metal casing.

Further, in order to solve the above-mentioned problem,
The present invention proposes a surface combustion device in which an appropriately shaped second porous dispersion plate is provided downstream of an air-fuel mixture inlet.

In order to solve the above-mentioned problem,
The present invention proposes a surface burning device constituted by a cylindrical or rectangular cylinder as a cylindrical surface burning material constituted by a surface burning material.

Also, in order to solve the above-mentioned problem,
The present invention proposes a surface combustion device in which the cylindrical metal casing body is configured as a cylinder or a square tube.

Also, in order to solve the above-mentioned problem,
In the present invention, the surface combustion body is a surface combustion body in which a highly permeable porous cloth made of a knitted or woven fabric of heat-resistant steel and a highly permeable porous reinforcing material are adhered by welding at a plurality of locations over the entire surface. A device is proposed.

Also, in order to solve the above-mentioned problem,
In the present invention, the surface combustor is made of a heat-resistant steel fiber yarn made of a highly permeable porous cloth made of a heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material at a plurality of locations over the entire surface thereof. A combined surface combustion device is proposed.

Also, in order to solve the above-mentioned problem,
The present invention proposes a surface burning device in which the reinforcing material is made of expanded metal.

Also, in order to solve the above-mentioned problem,
The present invention proposes a surface combustion device in which the reinforcing material is made of punched metal.

Further, in order to solve the above-mentioned problem,
The present invention proposes a surface combustion device in which the reinforcing material is made of a wire mesh.

[0026]

Next, an embodiment of the present invention will be described with reference to the drawings. First, in the drawing, reference numeral 1 denotes a surface combusting body constituted by closely adhering a highly permeable porous cloth material 2 made of a heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material 3. The manner of adhesion is welding at a plurality of places or bonding with heat-resistant steel fiber yarns at a plurality of places over the entire surface combustion. By adopting such a coupling method, the coupling portion becomes tight, and this portion does not pass through the premixed gas and does not burn, so that heat conduction from the combustion surface to each metal casing is minimized. Thus, there is a great advantage that overheating and deformation of the metal casing can be prevented. Also,
Such a connection eliminates the need for mechanical joints, simplifies the device and is easy to manufacture. In addition, the adhesion is extremely high over the entire combustion surface, the combustion becomes uniform, and the combustion is stabilized. Can be planned. For example, as shown in FIG. 1, such a surface combustor 1 is installed in an opening 5 of a box-shaped metal casing 4 with the reinforcing member 3 positioned on the box-shaped metal casing 4 side. In the box-shaped metal casing 4 on the upstream side of the reinforcing member 3, the cloth-like material 2 is provided.
In addition, the first porous dispersion plate 6 whose opening ratio is equal to or less than half that of the reinforcing material 3 is provided. in this way,
Since the first porous dispersion plate 6 having an opening ratio of 1/2 or less is provided on the upstream side of the cloth-like material 2 having a high opening ratio, the volume of the air-fuel mixture chamber is small due to the pressure loss of the first porous dispersion plate 6. Thus, the premixed gas is uniformly dispersed, and the combustion apparatus itself can be configured to be slim and compact, and there is a great advantage that uniformity of the flame can be obtained. Reference numeral 7 denotes a second porous dispersion plate provided on the upstream side of the first porous dispersion plate 6. The aperture ratio of the second porous dispersion plate 7 may be lower than that of the first porous dispersion plate 6. With this configuration, the premixed gas is further dispersed, and the above advantage is further improved. The first porous dispersion plate 6 and the second porous dispersion plate 7 may be curved or flat.
The reinforcing material 3 is expanded metal, punched metal,
Or it is constituted by a wire mesh or the like. By combining the reinforcing member 3 and the cloth material 2, a combustion device having an arbitrary shape and an arbitrary size can be easily manufactured. In particular, the above-described bonding method functions extremely effectively in combustion as described above. FIG. 2 shows that the surface burning body 1 is used to form a semi-cylindrical surface burning body 8.
In the opening 5 of the box-shaped metal casing 4. Thus, when the premixed gas is introduced from the premixed gas introduction unit 10, the premixed gas hits the second porous dispersion plate 7 and effectively reaches the first porous dispersion plate 6 downstream thereof. It is dispersed and further uniformly dispersed by the first perforated dispersion plate 6 over the entire area of the surface burning body, passes through the surface burning body 1, and forms a good thin-film flame on the surface of the surface burning body 1. I do.

FIG. 3 shows a conical surface burner 11 composed of the surface burner 1 with the reinforcing member 3 inside. The tapered first porous dispersion plate 12 is provided inside the conical surface combustion body 11. The premixed gas introduced from the premixed gas introduction unit 10 is effectively dispersed over the entire inner region by the tapered first perforated dispersion plate 12, passes through the surface combustion body 1, and is conical surface combustion body. A uniform and good thin-film flame is formed on the entire surface of No. 11.

FIG. 4 shows a surface burner 1 comprising a cylindrical surface burner 13 with the reinforcing plate 3 inside, and inside the cylindrical surface burner 13 the cloth-like material 2 and the reinforcement The configuration is such that a cylindrical first porous dispersion plate 14 having an opening ratio of 1/2 or less than that of the material 3 is provided. In this case, a tapered second porous dispersion plate 15 can be installed inside the cylindrical first porous dispersion plate 14. FIG. 5 is an example in which the top wall 16 in FIG.
Then, a tapered first perforated dispersion plate 12 is provided therein. FIG. 6 shows a thin box-shaped surface burner 17 constituted by a surface burner. Although the top wall of the thin box-shaped surface combustion body 17 is closed in the figure, this top wall may also be constituted by the surface combustion body 1 as shown in FIG. Thus, the premixed gas introduced from the premixed gas introduction unit 10 is satisfactorily dispersed by the cylindrical first perforated dispersion plate 14 or the tapered first perforated dispersion plate 12, and the surface combustors 1 are dispersed. It passes and begins to burn on its surface, forming a good flame in the form of a thin film. At this time, the tapered second porous dispersion plate 15 is
When installed, the dispersion into the cylindrical first perforated dispersion plate 14 or the tapered first perforated dispersion plate 12 proceeds favorably to form a more uniform thin-film flame. At this time, the top wall 1
6 is also made of the surface burner 1, the top wall 16
A good flame is also formed on the surface of.

FIG. 7 shows a configuration in which a hemispherical surface burner 18 is constituted by the surface burner 1 and a tapered first dispersion plate 12 is provided therein. The premixed gas is introduced from the premixed gas introduction unit 10 and is formed in a conical first porous dispersion plate 12
Is dispersed over the entire inner peripheral surface of the semicircular spherical surface combustion body 18,
After passing therethrough, a good thin-film flame is formed on the surface of the hemispherical surface combustion body 18.

FIG. 8 shows a cylindrical surface burner 19 having the porous body 2 of the surface burner 1 inside and the both ends opened by the surface burner 1. 19
Is covered with a tubular metal casing 9. Outside the reinforcing member 3 constituting the cylindrical surface combustor 19, a cylindrical first perforated porous dispersion plate 14 having an opening ratio lower than that of the cloth-like material and the reinforcing member by half or less is provided. Is installed. Then, a premixed gas introduction section 10 is formed in the cylindrical metal casing 9. And, on the downstream side of the premixed gas introduction section 10,
A second porous dispersion plate 7 may be provided. The shape of the second porous dispersion plate 7 may be any suitable shape such as a cylindrical shape, a semi-cylindrical shape, or a curved configuration. Thus, the premixed gas introduced from the premixed gas introduction unit 10 is supplied to the cylindrical metal casing 9 by the second porous dispersion plate 7.
It is dispersed throughout the inside, that is, the cylindrical first perforated dispersion plate 1
4 where it is further well dispersed and passes through the cylindrical surface burner 19 to form a stable uniform thin surface flame on its inner surface. The cylindrical surface combustion body 1
9 may be a cylinder or a square tube, and the cylindrical metal casing 9 may also be formed in a cylindrical or square shape accordingly.

[0031]

As described above, the present invention has the following remarkable effects. a. The surface combustors are welded at multiple locations throughout the entire area or bonded to multiple locations with heat-resistant steel fibers, so this portion does not pass through the premixed air and does not burn, so the metal casing from the combustion surface Heat conduction to the metal casing is minimized, and overheating and deformation of the metal casing can be prevented. Also, such a bond
A mechanical joint is not required, which simplifies the equipment and is easy to manufacture.In addition, the adhesion becomes extremely high over the entire combustion surface, the combustion becomes uniform, and the combustion is stabilized and the surface is improved. A good thin-film flame can be formed on the entire surface of the combustion body. b. Since the opening ratio of the first dispersion plate is less than half that of the cloth-like material and the reinforcing material constituting the surface combustor, the first dispersion plate is premixed with a small mixture chamber volume due to the pressure loss of the dispersion plate. The gas is uniformly dispersed, and the combustion apparatus itself can be configured to be slim and compact. In addition, there is a great advantage that a good and uniform thin film flame can be obtained in synergy with the surface combustion body. c. Further, the aperture ratio of the second porous dispersion plate may be lower than that of the first porous dispersion plate.
With this configuration, the premixed gas is further dispersed, and the above-described advantage can be further improved. d. The reinforcing material is made of expanded metal, punched metal, wire mesh, or the like. By means of welding or thread bonding between the reinforcing material and the cloth-like material at a plurality of places as described above, a combustion device having a small radius of curvature can be manufactured without limiting its size, and various heating methods can be used. There are excellent advantages that can accommodate the form. e. Since the connection is made by welding or a heat-resistant metal thread, no extra mechanical connection is required as compared with the connection to the metal casing by bolting, and the device is simplified and the production is easy.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view including a perspective view of a combustion device according to the present invention.

FIG. 2 is an explanatory sectional view including a perspective view of a combustion device according to the present invention.

FIG. 3 is an explanatory sectional view including a perspective view of a combustion device according to the present invention.

FIG. 4 is an explanatory sectional view including a perspective view of a combustion device according to the present invention.

FIG. 5 is an explanatory sectional view including a perspective view of a combustion device according to the present invention.

FIG. 6 is an explanatory sectional view including a perspective view of a combustion device according to the present invention.

FIG. 7 is an explanatory sectional view including a perspective view of a combustion device according to the present invention.

FIG. 8 is an explanatory sectional view including a perspective view of the combustion device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Surface combustion body 2 Cloth material 3 Reinforcement 4 Box-shaped metal casing 5 Opening 6 First perforated dispersion plate 7 Second perforated dispersion plate 8 Kamaboko type surface combustion body 9 Cylindrical metal casing 10 Premixed air introduction part 11 Conical Surface Burner 12 Tapered First Porous Dispersion Plate 13 Cylindrical Surface Burner 14 Cylindrical First Porous Dispersion Plate 15 Tapered Second Porous Dispersion Plate 16 Top Wall 17 Thin Box Surface Burning body 18 Hemispherical surface burning body 19 Cylindrical surface burning body

Claims (23)

[Claims] 1. A surface combustible body is formed by closely adhering a highly permeable porous cloth material made of a knitted or woven fabric of heat-resistant steel fiber and a highly permeable porous reinforcing material. In the opening of the casing, the reinforcing material is located and installed so as to be on the box-shaped metal casing side, and in the box-shaped metal casing on the upstream side of the reinforcing material, the cloth-like material and the reinforcing material Surface combustion apparatus characterized in that a low first porous dispersion plate having an aperture ratio of one half or less is installed. 2. The surface combustion apparatus according to claim 1, wherein a second perforated dispersion plate is provided further upstream of the first perforated dispersion plate. 3. The first porous dispersion plate and the second porous dispersion plate,
The surface combustion device according to claim 1, wherein the surface combustion device has a curved shape or a flat shape. 4. A comb-shaped surface burner is formed by a surface combustor, and the comb-shaped combustor is disposed in an opening of a box-shaped metal casing.
Surface burner described 5. A surface burning body is formed by closely adhering a highly permeable porous cloth made of a heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material.
A conical surface burning body is formed with the reinforcing plate inside, and inside this conical surface burning body, an opening ratio is smaller than that of the cloth-like material and the reinforcing material by a taper of less than half. Surface combustion device characterized by installing a first perforated dispersion plate 6. A surface combustible body is formed by closely adhering a highly permeable porous cloth made of a heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material.
A cylindrical surface burner is formed with the reinforcing plate inside, and inside this cylindrical surface burner, an opening ratio is lower than that of the cloth-like material and the reinforcing material by a half or less. Surface combustion device characterized by installing a first perforated dispersion plate 7. A surface combustible body is formed by closely adhering a highly permeable porous cloth made of a heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material.
A cylindrical surface burning body is formed with the reinforcing plate inside, and inside this cylindrical surface burning body, an opening ratio is lower than that of the cloth-like material and the reinforcing material by a taper of less than half. Surface combustion device characterized by installing a first perforated dispersion plate 8. A surface burning body is formed by closely adhering a highly permeable porous cloth made of a heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material.
A thin box-shaped surface burner is formed with the reinforcing plate inside, and the thin box-shaped surface burner has an opening ratio less than half that of the cloth-like material and the reinforcing material inside the thin box-shaped burner. Surface combustion device characterized by installing a box-shaped first perforated dispersion plate 9. The surface burning device according to claim 6, wherein the cylindrical surface burning body formed of the surface burning body has a top wall also formed of the surface burning body. 10. The surface combustion apparatus according to claim 8, wherein the thin box-shaped surface combustion body constituted by the surface combustion body has a top wall also constituted by the surface combustion body. 11. The surface combustion apparatus according to claim 6, wherein a tapered second dispersion plate is provided inside the first cylindrical perforated dispersion plate. 12. The surface combustion apparatus according to claim 8, wherein a tapered second dispersion plate is provided inside the thin box-shaped first porous dispersion plate. 13. A surface burning body is formed by closely adhering a highly permeable porous cloth made of a heat-resistant steel fiber knit or woven fabric and a highly permeable porous reinforcing material. A hemispherical surface burner is formed with the plate inside, and the inside of the hemispherical surface burner has a tapered shape having an aperture ratio less than half that of the cloth and the reinforcing material. Surface combustion device characterized by installing a first perforated dispersion plate 14. A surface combustible body is formed by closely adhering a highly permeable porous cloth made of a knitted or woven fabric of heat-resistant steel fiber and a highly permeable porous reinforcing material. A tubular surface combustor having both ends opened with the cloth inside is formed, and the tubular surface combustor is covered with a tubular metal casing. In the tubular metal casing, the tubular surface combustor is provided. Surface combustion characterized in that a tubular first porous dispersion plate having an opening ratio lower than that of the cloth-like material and the reinforcing material by a factor of 2 or less is provided outside the reinforcing material constituting the combustion body. apparatus 15. The surface combustion device according to claim 14, wherein an air-fuel mixture introducing portion is provided on a side wall of the cylindrical metal casing. 16. The surface combustion apparatus according to claim 15, wherein a second perforated dispersion plate having an appropriate shape is provided downstream of the air-fuel mixture introduction section. 17. The surface combustion apparatus according to claim 14, wherein the cylindrical surface combustion body constituted by the surface combustion body is constituted by a cylinder or a square tube. 18. The surface combustion device according to claim 14, wherein the tubular metal casing body is formed as a cylinder or a square tube. 19. The surface combusting body has a highly air-permeable porous cloth made of a knitted or woven fabric of heat-resistant steel fiber and a highly air-permeable porous reinforcing material adhered to the entire surface by welding at a plurality of locations. Claims 1, 4, 5, 6, characterized by the following:
The surface combustion apparatus according to 7, 8, 9, 10, 13, 14, or 17 20. The surface combusting body is composed of a highly permeable porous cloth made of a knitted or woven fabric of a heat-resistant steel fiber and a highly permeable porous reinforcing material made of a heat-resistant steel fiber yarn at a plurality of locations on the entire surface thereof. The method according to claim 1, wherein
The surface combustion device according to 4, 5, 6, 7, 8, 9, 10, 13, 14, or 17 21. The method according to claim 1, wherein the reinforcing material is made of expanded metal.
The surface combustion device according to 8, 9, 10, 13, 14, or 17 22. The method according to claim 1, wherein the reinforcing member is made of punched metal.
The surface combustion apparatus according to 2, or 17, 23. The method according to claim 1, wherein the reinforcing member is made of a wire mesh.
The surface combustion apparatus according to 13, 14, or 17