JP4313009B2 - Firing furnace - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a firing furnace for firing forged workpieces and ceramics using charcoal as a fuel, and more particularly to a firing furnace capable of improving article firing efficiency by extending a flame of combustion gas for a long time.
[0002]
[Prior art]
Conventionally, ceramic pottery used as a firing furnace for firing pottery is a large fixed type constructed with refractory bricks, etc., requires a large space for installation, and becomes expensive equipment. Has already proposed a pottery kiln (climbing kiln) that fires ceramics using charcoal as a fuel so that hobby potters can easily burn the pottery at home personally. .
[0003]
This ceramic pottery is mounted on a bottomed bottom kiln member, a cylindrical kiln member that forms a vertical article firing chamber inside by stacking on the bottom kiln member, and an uppermost cylindrical kiln member. Combustion that raises the article firing chamber by placing the article to be fired inside the article firing chamber, putting charcoal in the bottom kiln member and burning it with the air supplied from the air supply port The article is fired with gas.
[0004]
[Problems to be solved by the invention]
By the way, in the ceramic pottery as described above, the high-temperature combustion gas generated by burning the charcoal in the bottom kiln member rises in the article firing chamber, thereby firing the article on the article placing plate. However, in such a pottery kiln, in order to improve the firing efficiency of the article, it is necessary to make the flame of the combustion gas as long as possible and to bring the combustion gas into direct contact with the article. There was room for improvement in the kiln.
[0005]
Therefore, the object of the present invention is to improve the firing efficiency of the article by making the flame of the combustion gas as long as possible and by directly bringing the combustion gas into contact with the article by increasing the stagnant time in the article firing chamber. An object of the present invention is to provide a firing furnace and a firing method for a baked product.
[0006]
[Means for Solving the Problems]
In order to solve the above problems, the invention of claim 1 is directed to a bottomed cylindrical bottom kiln member whose inside is a charcoal combustion chamber and whose upper surface is open, and the charcoal is disposed on the bottom kiln member. A vertical article comprising a plurality of cylindrical kiln members that are placed so as to communicate with the combustion chamber and are sequentially brought into contact with each other, and extending upward with respect to the charcoal combustion chamber by the inside of each of the cylindrical kiln members that are sequentially joined together A firing chamber is formed, and inside the article firing chamber, the article mounting plate is vertically arranged with respect to the article firing chamber at a position between the connecting portion between the bottom kiln member and the tubular kiln member and between the tubular kiln members. in the firing furnace erection so that the arrangement, the article of the article loading plate, the upper and lower article carrying plate is by cormorants rack setting a planar cross-like arrangement, the width of each article carrying plate Combustion gas is set narrower than the inner width of the firing chamber and between the inner surface of the article firing chamber and both side edges of each article mounting plate. Forming a through path for passing, by made different positions a through passage of this up and down, but employing the configuration set to be longer residence furnace time in the article firing chamber of the combustion gases.
[0007]
Further, the invention of claim 2 is a bottomed cylindrical bottom kiln member whose inside is a charcoal combustion chamber and whose upper surface is open, and is placed on the bottom kiln member so as to communicate with the charcoal combustion chamber. A plurality of cylinder kiln members that are sequentially brought into contact with each other, and a vertical article firing chamber that extends upward with respect to the charcoal combustion chamber is formed by the inside of each of the cylinder kiln members that are sequentially joined together. Inside the firing chamber, firing in which the article mounting plate is installed in the upper and lower multi-stage arrangement with respect to the article firing chamber between the connection portions of the bottom kiln member and the tubular kiln member and between the tubular kiln members. Using a furnace, the above-mentioned article placement plates are installed so that the upper and lower article placement plates are arranged in a cross-like manner in a plane, and the lateral width of each article placement plate is set narrower than the inner width of the article firing chamber and, between the side edges of the inner and the article carrying plate of the article baking chamber, to form a through passage for the combustion gas passes through By made different positions this path up and down, a longer path flow by the flow through the passages between the combustion gas to elevate the article firing chamber is positioned vertically as an inclined flow, the stagnation furnace time of the combustion gas A configuration is adopted in which the combustion gas is brought into contact with the article and fired while being set long.
[0008]
The bottom kiln member formed in the square shape of the firing furnace is provided with an air supply port in the periphery, and the cylindrical kiln member stacked on the bottom kiln member is also formed in a square shape, and the square kiln member is formed on the uppermost cylindrical kiln member. The lid member is placed.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
The embodiment shown in FIGS. 1 to 3 shows a firing furnace 1 serving as a simple climbing kiln, which is used for firing ceramics using charcoal A as a fuel.
[0011]
The firing furnace 1 has a bottomed rectangular tube-shaped bottom furnace in which an air supply hole 2 that can be opened and closed and an air hole 3 that can be opened and closed are provided on a peripheral wall so as to face each other and the inside is a combustion chamber 4 and the upper surface is opened. The member 5 is provided with an air hole 6 that can be opened and closed on the peripheral wall, and is a rectangular tube kiln member 7 that is placed on the bottom kiln member 5 and sequentially connects a plurality thereof, and an exhaust port at an offset position. 8, a lid member 9 for closing the upper end of the uppermost cylinder kiln member 7, ceramics installed between the bottom kiln member 5 and the cylinder kiln member 7, and between the upper and lower cylinder kiln members 7 and 7, etc. And a fire-resistant article mounting plate 10 having a flat plate shape.
[0012]
The bottom kiln member 5 and the cylindrical kiln member 7 and the lid member 9 have, for example, a fire-resistant structure using a fire-resistant material that can withstand a temperature of 1400 to 1500 ° C., and by stacking these constituent members, A simple climbing kiln in which the inside of the cylindrical kiln member 7 serves as an article firing chamber 11 is formed, and the air holes 3 and 6 described above can be opened and closed by inserting and removing a fire-resistant plug 12.
[0013]
Incidentally, in the illustrated case, the combustion chamber 4 of the bottom kiln member 5 has a volume of about 220 mm in length and width and a height of about 200 mm, and the inner diameter of the combustion chamber 4 is slightly larger than that of the combustion chamber 4. Are used in a stacked manner, and placing step portions 13 and 14 of the article placing plate 10 are provided on both sides of the upper end portion of the bottom kiln member 5 and on both sides of the upper end portion of each cylindrical kiln member 7, and the bottom kiln member 5 is burned. A rooster 15 is installed at the bottom of the chamber 4.
[0014]
The article mounting plate 10 is made of a heat-resistant material and has a width that is set narrower than the inner width of the cylindrical kiln member 7, and is constructed so that the inner surface of the article baking chamber 11 and both sides of the article mounting plate 10 are placed. By forming a passage 16 through which combustion gas passes between the edges and arranging the upper and lower article placement plates 10 so as to cross the plane, the upper and lower passages 16 are arranged at right angles in a plane. .
[0015]
Next, a method for firing an article using the firing furnace 1 of the above embodiment will be described.
[0016]
A predetermined amount of charcoal A is put into the combustion chamber 4 of the bottom kiln member 5 and placed on the rooster 15, and the article placing plate 10 is installed between the placing steps 13 of the bottom kiln member 5. The cylinder kiln member 7 is stacked on the member 5, and the article mounting plate 10 is installed between the mounting step portions 14 of the cylinder kiln member 7. An article B to be fired is placed on the article placement plate 10.
[0017]
At this time, the stacking phase of the cylindrical kiln member 7 is selected so that the article mounting plate 10 on the bottom kiln member 5 and the article mounting plate 10 of the cylindrical kiln member 7 are arranged so as to cross in a plane. The cylinder kiln member 7 is stacked on the kiln member 7, the lid member 9 is placed thereon, and the firing furnace 1 in which the inside becomes the vertical article firing chamber 11 is assembled.
[0018]
Since the article mounting plate 10 is set to have a lateral width narrower than the inner width of the cylindrical kiln member 7, by installing this, the inner surface of the article baking chamber 11 and both side edges of the article mounting plate 10 are arranged. In the meantime, a passage 16 through which combustion gas passes is formed. By arranging the upper and lower article placement plates 10 to cross in a plane, the upper and lower passages 16 are arranged in a plane at right angles, The lid member 9 is placed so that the exhaust port 8 is arranged at a right angle in a plane with respect to the thin channel 16 at the top.
[0019]
When the charcoal A is ignited and combusted in the above state, the air flowing in from the air supply port 2 is supplied as primary air from the bottom of the rooster 15 and as secondary air from the top of the rooster 15, and the combustion rising in the article firing chamber 11 The gas flows through the lower narrow passage 16 and then flows toward the upper passage 16 having a right angle arrangement.
[0020]
In this way, when the passage 16 is formed in the middle of the flow path of the combustion gas, the combustion gas is throttled in the passage 16 to increase the flow velocity, and the flame extends well so that it reaches far away. The combustion gas does not return to the lower article firing chamber, thereby improving the firing efficiency of the article.
[0021]
Also, when the combustion gas flows from the lower narrow passage 16 to the upper passage 16 and further from the upper passage 16 to the exhaust port 8, the vertical arrangement of each of them is at right angles. As shown by the arrows, the combustion gas becomes an inclined flow swirling diagonally, whereby the flow path is lengthened, the stagnant time of the combustion gas is set longer, and the thermal efficiency can be improved.
[0022]
Moreover, the inclined flow of the combustion gas that swirls in the article firing chamber 11 is in direct contact with the article B placed on the article placing plate 10, and the article B is fired at a high temperature. Can do.
[0023]
The temperature of the article firing chamber 11 by the combustion gas is adjusted by adjusting the amount of charcoal A introduced into the combustion chamber 4, the opening amount of the air supply port 2 and the exhaust port 8, and the opening and closing of the air holes 3 and 6. Can be performed.
[0024]
At the time of firing the article B, the combustion gas rising in the article firing chamber 11 contains a fine carbon content, so in the case of the article B coated with glaze, it acts on the glaze and gives a change, In the case of a solid article B, it comes into contact with the article B and fuses with the raw material components, and a glassy material is attached by coalescence of the raw material components of the charcoal A and the article B, and this glassy material has a novel and unique hue. A pattern will be formed.
[0025]
In addition, since the temperature in the kiln due to the combustion of the charcoal A is up to about 1300 ° C., the solid article B can be surely baked and a ceramic without water leakage can be obtained.
[0026]
Further, when the firing of the article B is completed, if the supply port 2 is closed to reduce the oxygen in the firing furnace 1, the cooling and firing of the article B with carbon monoxide becomes possible. However, a metal-like work will be obtained.
[0027]
【The invention's effect】
As described above, according to the present invention, a plurality of upper and lower article mounting plates are laid in a cross-like arrangement in the interior of the article firing chamber, and the inner surface of the article firing chamber and each article placing plate are arranged. By changing the position of the passage for the combustion gas formed between the both side edges up and down, the combustion gas stagnant time in the article firing chamber becomes longer, and the thermal efficiency in the article firing chamber can be improved. At the same time, the article can be fired at a high temperature by the combustion gas flow coming into direct contact with the article, and the firing efficiency of the article can be improved.
[Brief description of the drawings]
FIG. 1 is a longitudinal front view showing a firing furnace according to an embodiment of the present invention. FIG. 2 is a longitudinal side view showing a firing furnace according to an embodiment of the invention. FIG. 3 shows a firing furnace according to an embodiment of the invention. Exploded perspective view showing [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Firing furnace 2 Air supply hole 3 Air hole 4 Combustion chamber 5 Bottom kiln member 6 Air hole 7 Tube kiln member 8 Exhaust port 9 Lid member 10 Article mounting board 11 Article baking chamber 12 Plug 13 Mounting step part 14 Mounting step part 15 Rostor 16 Passage A Charcoal B Goods

Claims (2)

Internal charcoal combustion chamber (4) and turned with the upper surface the open bottomed cylindrical bottom kiln member (5), communicating the interior of the coal combustion chamber (4) on this Sokokama member (5) A plurality of cylinder kiln members (7) that are placed and sequentially brought into contact with each other, and are vertically formed with respect to the charcoal combustion chamber (4) by the inside of each of the cylinder kiln members (7) that are sequentially joined together. An article firing chamber (11) is formed, and inside the article firing chamber (11), between the connection portions of the bottom kiln member (5) and the tube kiln member (7) and between the tube kiln members (7). In the firing furnace in which the article mounting plate (10) is installed at the position of the article firing chamber (11) so as to be arranged in multiple stages above and below ,
The article loading plate (10), the upper and lower article carrying plate (10) is by cormorants rack setting a planar cross-like arrangement, the article baking chamber the width of the respective article loading plate (10) set narrower than the inner width (11), between the side edges of the inner and the article carrying plate (10) of the article firing chamber (11), through passage for the combustion gas passes through the (16) formed, it made different positions through passage of this (16) up and down, firing furnace, characterized in that set to be longer residence furnace time in the article firing chamber of the combustion gas (11). A bottomed kiln bottom furnace member (5) whose upper surface is opened as a charcoal combustion chamber (4), and the inside communicates with the charcoal combustion chamber (4) on the bottom kiln member (5). A plurality of cylinder kiln members (7) that are placed and sequentially brought into contact with each other, and are vertically formed with respect to the charcoal combustion chamber (4) by the inside of each of the cylinder kiln members (7) that are sequentially joined together. An article firing chamber (11) is formed, and inside the article firing chamber (11), between the connection portions of the bottom kiln member (5) and the tube kiln member (7) and between the tube kiln members (7). Using a firing furnace in which the article mounting plate (10) is laid in a multistage arrangement with respect to the article firing chamber (11) at the position of
The article placing plate (10) is installed so that the upper and lower article placing plates (10) are arranged in a cross-like manner in a plane, and the width of each article placing plate (10) is set to the article firing chamber (11). set narrower than the inner width), between the side edges of the inner and the article carrying plate of the article firing chamber (11) (10) to form a through passage (16) for the combustion gas passes through By changing the position of this passage (16) up and down, the combustion gas rising in the article firing chamber (11) flows as a slant flow between the passages (16) located above and below, thereby changing the flow path. A method for firing a fired product, characterized in that the combustion gas is brought into contact with an article and fired while increasing the length of time and setting the combustion gas stagnant time longer.

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