JPH074859A - Built-up type baking furnace - Google Patents

Abstract

PURPOSE:To make it compact in dismantled condition and flexible in assembling by a method wherein the title furnace is constituted of a flat hearth member, a plural ity of sheet type outer wall members and sheet type inner wall members, a flat furnace lid member and a chimney member, provided on the furnace lid member, while the inner wall members are constituted of light-weight refractories, formed of ceramic fibers. CONSTITUTION:Flat fire port members 2, provided on a furnace base 1, a hearth member 3, having a flame introducing port communicating with the interior of the fire port and provided on the fire port members 2, and a plurality of sheet type outer wall members 4, assembling and constituting the outer periphery of a furnace body on the hearth member 3, are provided. A plurality of sheet type inner wall members 5, provided on the hearth member 3 so as to assemble and constitute the inner periphery of the furnace body through a necessary air gap with respect to the outer wall member 4, are provided. Further, a flat furnace lid member 6, constituting a top lid and provided with an air discharging port, and a chimney member 7, provided on the furnace lid member 6 and communicating with an air discharging hole, are provided. In this case, at least the inner wall members 5 are constituted of thin and light-weight refractory members formed of ceramic fibers.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prefabricated firing furnace mainly used for firing small pots indoors or the like in a small scale.

[0002]

2. Description of the Related Art This type of assembling firing furnace is lightweight and not only easy to assemble, but also disassembled and stored in a storeroom,
Alternatively, it is important that it is convenient to carry and can be downsized. Further, since it is necessary to efficiently raise the temperature in the furnace, a structure having sufficient heat insulation is required, but the rapid temperature rise and the thickness of the heat insulation wall are in a trade-off relationship. That is, since a general firing furnace has a structure in which a considerably thick furnace wall is prepared to maintain the required temperature inside the furnace and a temperature gradient inside and outside the furnace is maintained, the heat capacity is large. It takes time for the temperature of the body to rise, and on the other hand, the amount of heat radiated from the outer surface of the furnace wall increases as the temperature rises. Therefore, it is practically impossible to employ such a structure as it is in a prefabricated firing furnace used indoors.

[0003]

Therefore, the inventor of the present invention
In the past, we proposed a prefabricated firing furnace in which at least the furnace walls forming the outer circumference and the inner circumference of the furnace have a double structure having a void in the middle. As a result, the heat insulating property is dramatically improved, and it becomes possible to quickly secure a desired furnace temperature with a small gas burner or the like.

However, since the furnace wall adopted here has a cylindrical structural member such as a cylinder, it occupies a large storage space when not in use, and is also bulky during transportation. There is a drawback that. In addition, when the object to be fired has a peculiar shape such as a long length, it is necessary to prepare a prefabricated firing furnace having a sufficient size to store the object.

[0005]

SUMMARY OF THE INVENTION The present invention has been made based on the above circumstances, and is compact when dismantled, has flexibility in assembling, and can be constructed without being restricted in size. It is an object of the present invention to provide a prefabricated firing furnace which can be easily assembled and can achieve high temperature firing of pottery and the like.

[0006]

Therefore, in the present invention,
A flat hearth member having a flat hearth stand, a burner nozzle insertion opening and a crater member installed on the hearth stand, and a flame inlet opening communicating with the inside of the crater member and installed on the crater member And a plurality of plate-shaped outer wall members for assembling / constructing the outer periphery of the furnace body on the hearth member, and on the hearth member for assembling / constructing the inner periphery of the furnace body through a required gap with respect to the outer wall member. A plurality of plate-shaped inner wall members, a flat furnace lid member with an exhaust hole that constitutes a canopy, and a chimney member that is installed on the furnace lid member and communicates with the exhaust hole, The inner wall member is made of a lightweight refractory material formed by molding ceramic fibers.

[0007]

As a result, when disassembled, most of the members constituting the furnace are plate-shaped and can be compactly stored and transported without occupying a waste space. In addition, even when assembling, it is only necessary to build up each member on the furnace stand, so that even an amateur can easily assemble, and a plurality of sets can be combined and the size can be selected.
It is adaptable to the shape. Further, at least the inner wall member for partitioning the inner space of the furnace is made of a lightweight refractory material formed by molding ceramic fibers, so that the heat capacity is very small and the heat can be easily increased. Since the outer circumference of the furnace body is constituted by the above, the heat insulation is high, and even if a relatively small gas burner or the like is used, a high temperature can be achieved quickly.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to the drawings. The prefabricated firing furnace according to the present invention,
As shown in FIG. 1, it has a substantially square flat furnace base 1, a flat crater member 2 having a burner nozzle insertion port and installed on the furnace base 1, and a flame introducing port 3A communicating with the inside of the crater member. Together with the hearth member 3 installed on the crater member 2, and a plurality of, in this embodiment, four plate-like outer wall members 4 for assembling and configuring the outer periphery of the furnace body on the hearth member 3, and the outer wall member 4 On the other hand, a plurality of, in this embodiment, four plate-shaped inner wall members 5 installed on the hearth member 3 so as to assemble / configure the inner circumference of the furnace through a required gap, and a canopy are formed. It is composed of a flat furnace lid member 6 with an exhaust hole 6A, and a chimney member 7 installed on the furnace lid member 6 and communicating with the exhaust hole 6A. At least the inner wall member 5 is thin (for example, about 25 mm thick) formed by molding ceramic fibers.
It is composed of lightweight refractory material (in this example,
For convenience of transportation and other handling, all components are
Made of lightweight refractory material, the same material as the inner wall).
Then, in the furnace surrounded by the inner wall member 5, the object to be fired is placed via the shelf plate 13.

In this embodiment, the crater member 2 is 3
It is composed of a combination of individual rectangular parallelepiped blocks. Further, steps 3B, 3C and 6B, 6C for restricting the installation positions of the outer wall member 4 and the inner wall member 5 are formed in the hearth member 3 and the furnace lid member 6, respectively. Further, the outer wall member 4 and the inner wall member 5 are formed with protrusions 4A and 5A and fitting grooves 4B and 5B, which are fitted to each other, on adjacent side edges to be combined. Further, the chimney member 7 is also composed of four plate members 7A surrounding the exhaust hole 6A and a canopy 7C having an exhaust hole 7B. A protruding portion 7D and a fitting groove 7E that fit with each other are also formed on the side edges of these plate members 7A.

When these constituent members are disassembled, all of them are flat plate-like objects, so that they can be compactly assembled and are convenient for storage and transportation in a storeroom or the like. Further, even in the case of assembling, it is possible to assemble with respect to the furnace base 1 simply by a stacking method, so that specialized furnace construction technology is not required. In addition, the furnace wall is composed of an outer wall member 4 and an inner wall member 5 which is arranged on the inner side of the outer wall member 4 with a required gap therebetween. Further, the inner wall member 5 is a thin lightweight refractory material formed by molding ceramic fibers. It has a small heat capacity, so it has an excellent heat insulation effect. In addition, the required high temperature (for firing ceramics,
Usually, the temperature inside the furnace can be quickly raised to 1,250 ° C. For this reason, a simple heat source such as propane gas is used, and as shown in the figure, it is introduced to the gas burner 9 from the gas cylinder 8 and the thermal power for injecting and burning from the nozzle in the burner insertion port 3A, Even with thermal energy, it is possible to sufficiently sinter the pottery or the like by the flame introduced into the furnace through the flame introduction port 3A.

FIGS. 4 and 5 show another embodiment of the present invention, in which two sets are doubled by adding a few additional members to the doubled set. It constitutes the firing furnace of the volume. That is, the two furnaces 1 are arranged side by side, and each member is built on it, but one furnace body uses the outer wall member 10, the inner wall member 11, and the canopy / hearth bottom auxiliary member 12 which are additional members. , Configured to double the volume of each set.

In the above embodiment, the furnace body having a double volume is constructed by using some additional members. However, the firing furnace of the present invention has the advantage that it is of an assembly type, so that it is further different or complicated. Of course, various combinations can be devised.

[0013]

As described above in detail, the present invention has a flat furnace base, a crater member having a burner nozzle insertion port and installed on the furnace base, and a flame introduction communicating with the inside of the crater member. A flat hearth member that has a mouth and is installed on the crater member, a plurality of plate-shaped outer wall members that assembles and configures the outer circumference of the furnace body on the hearth member, and a required space for the outer wall member A plurality of plate-shaped inner wall members installed on the hearth member so as to assemble and configure the inner circumference of the furnace via
A flat furnace lid member with an exhaust hole that constitutes a canopy, and a chimney member that is installed on the furnace lid member and communicates with the exhaust hole. At least the inner wall member is a lightweight fireproof molded ceramic fiber. Since it is made of material, it is compact when dismantled, it has flexibility in assembling, it can be constructed without being restricted in size, and it has excellent heat insulation and can be easily assembled indoors, and can be used in high temperatures such as ceramics. It is possible to obtain the effect that the firing can be achieved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the above embodiment.

FIG. 3 is a vertical sectional side view of the above embodiment.

FIG. 4 is a cross-sectional plan view of another embodiment of the present invention.

FIG. 5 is likewise a vertical sectional front view.

[Explanation of symbols]

 1 Furnace Base 2 Crater Member 3 Hearth Member 3A Flame Inlet 3B, 3C Step 4 Outer Wall Member 4A Projection 4B Fitting Groove 5 Inner Wall Member 5A Projection 5B Fitting Groove 6 Furnace Lid Member 6A Exhaust Hole 6B, 6C Step 7 Chimney Member 7A Plate member 7B Exhaust hole 7C Canopy 7D Projection portion 7E Fitting groove 8 Gas cylinder 9 Burner 10 Outer wall member 11 Inner wall member 12 Hearth auxiliary member 13 Shelf plate

Claims (4)

[Claims] 1. A flat furnace stand, a burner nozzle insertion opening and a crater member installed on the furnace stand, and a flame introduction opening communicating with the inside of the crater member and installed on the crater member. A flat hearth member, a plurality of plate-shaped outer wall members for assembling / constructing the outer periphery of the furnace body on the hearth member, and an inner periphery of the furnace through a required gap with respect to the outer wall member. A plurality of plate-shaped inner wall members installed on the hearth member, a flat furnace lid member with an exhaust hole forming a canopy, and a chimney member installed on the furnace lid member and communicating with the exhaust hole A prefabricated firing furnace, characterized in that at least the inner wall member is made of a lightweight refractory material formed by molding ceramic fibers. 2. The prefabricated firing furnace according to claim 1, wherein the hearth member and the furnace lid member are formed with a step for restricting the installation positions of the outer wall member and the inner wall member. 3. The outer wall member and the inner wall member respectively have a protrusion and a fitting groove which are fitted to each other at adjacent side edges to be combined with each other.
The assembling-type firing furnace according to. 4. A shelf member for a fired product made of a refractory material is provided on the hearth member without disturbing the introduction of a flame from the flame introduction port into the furnace. The prefabricated firing furnace according to claim 1.