JPH0468294A - Batch type baking furnace - Google Patents

Abstract

PURPOSE:To make the temperature distribution of ceramic elements uniform and reduce the variabilities of the characteristics of the elements by a method wherein supporting rods, supporting the bottom surface of box pots by receiving it directly at a position apart from the bottom surface in a furnace, are provided detachably on the bottom furnace in he batch type baking furnace for effecting the baking treatment of the ceramic elements. CONSTITUTION:A batch type baking furnace 1 is provided with single baking chamber 4, blockaded by a furnace door 3, while supporting rods 6, made of ceramics, are arranged at predetermined positions on the bottom surface 5 in the furnace. The supporting rods 6, 6,... are fitted detachably into recesses formed on the bottom surface 5 in the furnace to receive and support the bottom surface 7 of box pots 20, positioned at the lowermost stage of box pots 2, piled in the form of a multistage, at a position apart from the bottom surface 5 in the furnace. The box pots 20 are heated effectively from the side of the bottom surface 7, the amount of calories to be used for heating is not deprived by the supporting rods 6, 6..., which are supporting the bottom surface 7 under the condition of point contact, the temperature distribution of the ceramic elements, received in the box pots piled in a multistage, is made uniform and the reduction of variabilities in the characteristics of the elements can be contribed effectively.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a batch-type firing furnace, and more particularly to an in-furnace support structure for a sagger housing a ceramic body.

<Prior Art> Conventionally, a batch-type firing furnace 10, the schematic configuration of which is shown in FIG. The ceramic body (not shown) to be fired is a box-shaped sagger 11 made of ceramic.
It is designed to be stored inside. Then, saggers 11 are stacked in multiple stages to house ceramic bodies. . . . is a base plate 12 made of flat ceramic, and a support rod 13 made of ceramic that receives and supports the bottom surface of the base plate 12. ... is placed on the inner bottom surface 14 of the batch type firing furnace 10 in a weighed state, and then fired in a lump-like manner.

<The invention tries to solve the problem! ! ! By the way, in the firing process of a ceramic body using the batch type firing furnace IO of the conventional configuration, the bottom surface of the sagger pot 11o located at the lowest stage of the multi-tiered stack is in full contact with the base plate 12. Because of this, this sagger is 11. The amount of heat to be heated is the base plate 12
Saggers stacked in multiple tiers 1
1. As a result of the temperature distribution of the ceramic bodies housed in each being different, there has been an inconvenience that these characteristics vary widely.

The present invention has been devised in view of such conventional inconveniences, and is capable of eliminating differences in temperature distribution of the ceramic body due to differences in the positions of multi-tiered saggers, thereby reducing variations in characteristics. It is intended as a support for bunch-type firing furnaces.

<Means for Solving the Problems> In order to achieve the above object, the present invention has a method in which the bottom surface of a sagger containing a ceramic body is directly received and supported on the inner bottom surface of a batch type firing furnace. The present invention is characterized in that a support rod separated from the bottom surface of the furnace is detachably provided.

Effect> According to the above configuration, the bottom of the sagger and the support rod that receives and supports it are in point contact, so that the bottom of the sagger does not come into full contact with other members. Therefore, the amount of heat that should be used to heat the saggers will not be taken away by other members, and the temperature distribution of the ceramic bodies housed in each of the stacked saggers will not differ.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a sectional view showing a schematic configuration of a batch type firing furnace according to an embodiment of the present invention, and reference numeral 1 in this figure indicates a bunch type firing furnace. A ceramic body (not shown) to be fired using this batch firing furnace 1 is a box-shaped sagger 2 made of ceramic. ...It is designed to be stored inside.

The batch type firing furnace 1 includes a single firing chamber 4 that is closed by a furnace door 3, and ceramic support rods 6. ...is arranged. Each of the support rods 6°... is removably fitted into a recess formed in the bottom surface 5 of the furnace, and the saggers 2 stacked in multiple stages to accommodate ceramic bodies.
By directly receiving and supporting the bottom surface 7 of the sagger 2° located at the lowest stage of f..., this bottom surface 7 is immediately exposed to the inner bottom surface 5 of the furnace. Therefore, this sagger 2° is effectively heated also from the bottom surface 7 side, and the amount of heat that should be used to heat it is in point contact with the support rod 6.・・・
・It will no longer be taken away by In addition, these support rods 6. ... does not necessarily have to be a solid rod, but may be a tubular hollow rod.

By the way, these support rods 6. The installation location and number of ... are 2. ... will be changed depending on the weight of the sagger 2 and the shape of its bottom surface 7, but as long as it is arranged so that it can support the center position and four corner positions of the bottom surface 7 of the sagger 2, it is practically acceptable. is considered sufficient. Also, at this time, these support rods 6. Support rods 6. It is also possible to prevent the sagger 2 from shifting laterally by forming a recess (not shown) into which the tip of the sagger 2 is fitted.

<Effects of the Invention> As explained above, in the batch type firing furnace according to the present invention, the bottom surface of the sagger containing the ceramic body is directly received and supported on the bottom surface of the furnace, so that the bottom surface of the furnace body is directly supported. Since the support rod that is separated from the sagger is detachably provided, the bottom surface of the sagger and the support rod that receives and supports it are in point contact.

Therefore, unlike the conventional example, the bottom surface of the sagger does not come into full contact with other members, and the amount of heat that should be used to heat the sagger is not taken away by other members.

As a result, the temperature distribution of the ceramic bodies housed in each of the multi-tiered saggers becomes uniform.
This results in the effect that these characteristic variations can be effectively reduced.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a schematic configuration of a batch-type firing furnace according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view showing a general W@ configuration of a batch-type firing furnace according to a conventional example. Reference numerals in the figure indicate a batch type firing furnace, 2 is a sagger, 5 is the bottom of the furnace, 6 is a support rod, and 7 is the bottom of the sagger. Note that the same reference numerals in the drawings indicate parts and portions that are the same or correspond to each other.

Claims (1)

[Claims] (1) A batch type firing furnace (1) for firing a ceramic body housed in a sagger (2), wherein the bottom surface (5) of the sagger (2) is 6) A batch type firing furnace characterized in that a support rod (7) is detachably provided to directly receive and support the heat exchanger (6) and to separate it from the bottom surface (5) of the furnace.