JPH01164766A - Method for calcining accessary tile - Google Patents

Abstract

PURPOSE:To improve the heating efficiency, to save the energy cost, and to evenly and uniformly calcine an accessary tile by placing the tile in an R-shaped tray, and calcining the tile in a kiln of specified structure. CONSTITUTION:The H-shaped tray 10 is provided with a couple of opposed side walls 12 and a base 14 connecting the walls, and the surface at right angles to the side wall is opened. An accessary tile 28 is placed on a burning stand 26 on the base 14. The trays 10 are piled up on a base plate 32. The piled-up trays 10 are placed on a truck 24 through the strut 30 and rack 34 for forming a constant space between the tray 10 and the truck 24. A flame is blown into the space from a burner 20 for blowing a concentrated flame provided between the upper and lower walls of the kiln 16, the medium-pressure second burner 22 is provided, if necessary, at the upper part to blow a heat flow, hence the whole inside of the kiln is heated, the truck 24 is passed through the inside of the kiln 16, and the tile 28 is calcined.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for firing accessory tiles, and more particularly to technical means for improving heating efficiency.

(Prior Art) Conventionally, the commonly used method for firing tiles is to store the fired tiles inside a sagger, stack the saggers together, and then place them on a trolley. In this method, the material is passed through a firing kiln for a certain period of time.

By the way, conventional firing kilns are of a type (side firing type) in which the flame is blown directly from the side across the stacked saggers from a burner installed on the kiln wall, as shown in Figure 6. Therefore, when firing accessory tiles curved into a predetermined shape, a box-shaped sagger 104 with four sides closed as shown in FIG. 4 is used as a second sagger. The flames blown out were prevented from directly hitting the tiles 106 (FIG. 5) inside the sagger 104. In other words, the sagger includes, in addition to the box-shaped sagger 104, a pair of opposing side walls and a pedestal connecting the middle part of the side walls, and the surface perpendicular to the side walls is open. There is an H-shaped sagger, but if you use such an H-shaped sagger, the flame from the burner on the kiln wall will hit the accessory tile 1 inside the sagger.
To prevent this, a box-shaped sagger pot with four sides closed is used to prevent this from being sprayed directly onto the 06, causing discoloration or surface defects.

(Problem to be Solved by the Invention) However, when the accessory tiles are fired using such a box-shaped sagger 104, it is difficult to exchange heat between the inside and outside of the sagger, and therefore the heating There was a problem that the efficiency decreased and the energy cost during firing increased.

(Means for Solving the Problems) The present invention has been made to solve these problems, and its gist is that the saggers include a pair of opposing side walls and an intermediate portion between the side walls. using an H-shaped sagger with an open surface perpendicular to the side wall, and with a certain space between the stacked H-shaped saggers and the trolley. The firing kiln is of a type in which a burner installed in the upper and lower intermediate parts of the kiln wall blows out flame intensively into the space, and The objective is to heat the entire atmosphere inside the kiln by circulating heat flow based on the flame blown out from the furnace, thereby firing the ornamental tiles in the sagger.

(Function) In the present invention, an H-shaped sagger with an open surface perpendicular to a pair of opposing side walls is used, so that heat can freely flow in and out between the inside and outside of the sagger. As a result, the tiles inside the sagger are heated efficiently. This improves heating efficiency during tile firing and reduces energy costs.

Moreover, in the present invention, a certain space is secured between the stacked saggers and the top surface of the cart, and the flame from the burner installed on the kiln wall is first blown into this space to circulate the heat flow inside the kiln. Therefore, even if an open H-shaped sagger as described above is used, flames are prevented from directly hitting the tiles inside the sagger, and all the tiles are heated and fired evenly and satisfactorily. .

(Example) Next, embodiments of the present invention will be described in detail based on the drawings.

FIG. 2 shows an H-shaped sagger used in this embodiment, and this H-shaped sagger 10 has a pair of side walls 12.
12 and a platform 14 that connects their intermediate parts, and has an H-shape with an open surface in a direction perpendicular to the side wall 12. In the H-shaped sagger 10 of this example, the length dimension L+ of the side wall 12 is 260 mm, and the dimension L2 between the outer surfaces of the side wall 12 is 280 mm.

On the other hand, FIG. 1 shows the configuration of a firing kiln, and this firing kiln 16 is equipped with a first burner 20 and a second burner 22 at the upper and lower intermediate portions of the kiln wall 18. The first burner 20 in the intermediate portion is a high-speed burner, and ejects flame almost directly above the upper surface of the truck 24. On the other hand, the upper second burner 22 is a medium-pressure burner, and its flame is ejected almost right sideways into the upper space of the stacked saggers 10.

To fire the ornamental tiles according to this example, as shown in FIG. 2, place the baking table 26 on the stand gA14 of the H-shaped sagger pot lO, place the ornamental tile (green base material) 28 on it, and The H-shaped saggers 10 are stacked in multiple tiers as shown in FIG.
This is oriented so that the side wall 12 is on the side of the kiln wall 18, and is carried into the firing kiln 16 by a cart 24. In addition, when firing accessory tiles of different sizes at the same time, side wall 1
A plurality of types of saggers 10 having different heights H of 2 by a certain size are prepared (for example, H=54 mm and 75 mm).

94 mm 2 and 125 mm 2 ), it is possible to make the total height uniform (for example, 750 mm) when these are stacked.

By the way, as shown in FIG. 1, in this example, the stacked H-shaped saggers 10 are placed at a certain distance from the top surface of the cart 24 by a pedestal 34 having a cylindrical support 30 and a base plate 32. Therefore, the flame from the first burner 2o of the sight 18 is first blown out into the space between the trolley 24 and the lowest sagger 1o, and then the heat flow rises upward and hits the target earth. The heat flow of the flame from the second burner 22 circulates inside the kiln. As a result, the atmosphere inside the kiln is uniformly and entirely heated, and the tiles 28 inside the sagger pot 1O are heated and fired by this atmosphere. As described above, the H-shaped sagger 1o of this example has an open surface in the direction perpendicular to the side wall 12, so that heat can quickly flow in and out between the inside and outside of the sagger #10. Therefore, the heating efficiency for the tiles 28 is improved, and the energy cost required for firing the tiles is reduced.

Although the embodiments of the present invention have been described in detail above, the present invention can also be implemented in other embodiments.

For example, instead of the pedestal 34, it is also possible to use a pedestal in another form that can create a space between the top surface of the cart and the stacked saggers, or to change the two dimensions of the H-shaped sagger. It is also possible to omit the second burner in the upper stage of the sight depending on the case, or to apply the present invention to the firing of accessory tiles of other forms. Furthermore, when carrying the H-shaped sagger into the firing kiln, it is possible to orient the side wall in a direction perpendicular to the sight, so that the open part is on the side of the sight.
The present invention can be implemented with various modifications without departing from the spirit thereof.

(Effects of the Invention) As described in detail above, according to the present invention, the heating efficiency for the accessory tile is improved, which not only saves energy costs when firing the accessory tile, but also improves the heating efficiency for the accessory tile as a whole. Excellent effects such as being able to bake uniformly are produced.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view showing the configuration of a firing kiln used in one embodiment of the present invention, and Fig. 2 is a perspective view showing an H-shaped sagger pot used in the same embodiment together with a baking stand and ornamental tiles. ,
FIG. 3 is a front sectional view showing the H-shaped saggers in a stacked state. FIG. 4 is a perspective view showing a conventional box-shaped sagger together with a roasting stand. FIG. 5 is a front cross-sectional view showing the box-shaped saggers in a stacked state, and FIG. 6 is a cross-sectional view showing the configuration of a conventional firing kiln. 10: H-shaped sagger 12: Side wall 14: Base 16: Firing kiln 18: Sight 20: First burner 22: Second burner 24: Cart 28: Accessory tile 30: Support 32: Base plate 34: Frame patent application Person Inax Co., Ltd. Representative Person
Patent Attorney Yoshi 1) Kazuo #A - Figure 2, Figure 3, Figure 4, Figure 5

Claims (1)

[Scope of Claims] A method for firing the accessory tiles by storing the accessory tiles as a fired product inside a sagger, stacking the saggers on a cart, and passing the accessory tiles through the inside of a firing kiln. As the sagger, an H-shaped sagger is used, which has a pair of opposing side walls and a pedestal connecting the middle part of the side walls, and has an open surface in a direction perpendicular to the side walls. , and the stacked H-shaped saggers are placed on the trolley via a pedestal for forming a certain space between them and the firing kiln,
The burner installed in the upper and lower middle parts of the kiln wall blows out the flame intensively into the space, and the entire atmosphere inside the kiln is heated by the circulation of heat flow based on the flame blown out into the space. A method for firing accessory tiles, which comprises firing the accessory tiles in the sagger.