JPH02106694A - Ceramic art furnace - Google Patents

Abstract

PURPOSE:To prevent the generation of graphite and soot by a method wherein a generating source for heat fed to a discharge flow passage and a heat accumulating body are provided, and an air introduction system is provided, and heat generating capacity being high enough to allow increase of the temperature of discharged reducing high temperature gas to a value higher than a combustion starting temperature is imparted on the generating source for heat. CONSTITUTION:High temperature gas from a kerosene burner 5 enters through a gas introduction port 6 formed in a furnace bottom 2 to the interior of a furnace, and high temperature gas flows through the furnace flows in a discharge flow passage 7. A temperature increasing device for discharge gas is formed with a heat generating source 8 to feed heat to the discharge flow passage 7, a heat accumulating body 9, and an air feed flow passage 10 in association with each other. The generating source 8 for heat of this device has heat generating capacity being high enough to allow increase of the temperature of reducing high temperature gas discharged from a space for calcining in a furnace to a value higher than a combustion starting temperature.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、主として、ポット式灯油バーナを使用する陶
芸炉に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates primarily to pottery furnaces using pot-type kerosene burners.

従来の技術： 陶芸炉には燃料として、灯油を使用するもの、プロパン
、都市ガス等のガスを使用するもの等があるが、灯油の
価格がガスの価格の１／４程度であること、灯油がガス
に較べて安全性が高いこと、灯油を燃料とする方が変化
に富んだ焼き上りの作品が得られること等の理由により
、アマチュア作家の間には灯油を燃料とする陶芸炉（陶
芸窯）が広く採用されている。Conventional technology: Some pottery furnaces use kerosene, propane, city gas, or other gas as fuel, but the price of kerosene is about 1/4 of the price of gas, and kerosene Amateur artists are using kerosene as fuel for pottery furnaces (pottery kilns) for several reasons, such as the fact that kerosene is safer than gas, and kerosene can produce more varied finished pieces. kilns) are widely used.

発明が解決しようとする課題： 上記理由によりアマチュア作家が好んで使用する灯油窓
は還元性雰囲気下の焼成を行おうとすると、黒煙および
煤の発生が甚しく、焼成時間も４〜６時間に亘るため、
住宅地においての使用は実質的に不可能であると言って
よい。Problems to be solved by the invention: For the above reasons, when kerosene windows, which are preferred by amateur artists, are fired in a reducing atmosphere, they generate a great deal of black smoke and soot, and the firing time is only 4 to 6 hours. To cross,
It can be said that its use in residential areas is virtually impossible.

課題を解決するための手段： 本発明は上記課題の解決を意図するもので、排気流路に
熱を供給する熱の発生源と蓄熱体とを設けると共に排気
流路内に空気を導入する空気導入系を設け、炉内の焼成
用空間より排出される還元性高温ガスを燃焼開始温度以
上の温度にまで昇温させる発熱容量を上記熱の発生源に
与えたことを特徴とする。Means for Solving the Problems: The present invention is intended to solve the above problems, and includes providing a heat generation source and a heat storage body that supply heat to the exhaust flow path, and an air system that introduces air into the exhaust flow path. The present invention is characterized in that an introduction system is provided, and the heat generation source is given a heat generation capacity to raise the temperature of the reducing high temperature gas discharged from the firing space in the furnace to a temperature equal to or higher than the combustion start temperature.

作用： 陶芸炉の焼成作業は第４図に示す如く、時点ｔ、。Action: The firing operation in the pottery furnace begins at time t, as shown in FIG.

ｔ２間の「あぶシだき」、時点ｔ２　、　ｔ３間の「攻
めだき」、時点℃Ｓ　＋　ｔ４間の「ねらし」に分けら
れ、燃料の供給は時点ｔ４において断たれる。焼成作業
には酸化性雰囲気の下において行われる酸化焼成と還元
性雰囲気の下において行われる還元焼成とがあり、還元
焼成は時点ｔ２＋　ｔＳ間の「攻めだき」を雰囲気を還
元性にして行うものである。It is divided into "abusing" between t2, "attacking" between time t2 and t3, and "aiming" between time ℃S + t4, and the fuel supply is cut off at time t4. Firing operations include oxidizing firing, which is performed in an oxidizing atmosphere, and reduction firing, which is performed in a reducing atmosphere.Reduction firing is performed in a reducing atmosphere during the "aggressive" period between time t2 + tS. It is.

上記本発明による陶芸炉は灯油バーナを使用する従来の
陶芸炉の欠点（還元焼成を行うときに黒煙および煤を発
生するという欠点）を伴わないもので、このものにおい
ては発熱容量を充分大きくして排気流路内に設けられた
熱の発生源が排気流路への空気の供給系と共働して排気
を燃焼状態に移行させ、それによって黒煙および煤の発
生が起らないようにする。すなわち、本発明による陶芸
炉の排気流路は排気を燃焼させる燃焼装置の一要素とさ
れてＡるのである。The pottery furnace according to the present invention does not have the drawbacks of conventional pottery furnaces that use kerosene burners (such as generating black smoke and soot during reduction firing), and has a sufficiently large heat generating capacity. The heat generation source provided in the exhaust flow path cooperates with the air supply system to the exhaust flow path to move the exhaust gas into a combustion state, thereby preventing the generation of black smoke and soot. Make it. That is, the exhaust flow path of the pottery furnace according to the present invention is considered as one element of the combustion device that burns the exhaust gas.

実施例゛ 第１図は本発明による陶芸炉の１例を示す縦断側面図、
第２図は第１図の２−２線方向（で断面をとりて示す横
断面図で、これらの図において、（１）。Embodiment FIG. 1 is a longitudinal sectional side view showing one example of a pottery furnace according to the present invention;
FIG. 2 is a cross-sectional view taken along line 2-2 in FIG. 1, and in these figures, (1).

＋２１．　＋３１．　＋４１は、それぞれ、炉周、炉底
、炉蓋、煙突である。炉底（２）には灯油バーｆ（５）
が取付けられている。灯油バーナ（５）よりの高温ガス
は炉底（２）に設けられたガス導入口（６）を経て炉内
に入り、炉を通過した高温ガスは排気流路（７）に入る
。+21. +31. +41 are the hearth circumference, hearth bottom, hearth lid, and chimney, respectively. At the hearth bottom (2) is a kerosene bar f (5)
is installed. High-temperature gas from the kerosene burner (5) enters the furnace through a gas inlet (6) provided at the furnace bottom (2), and the high-temperature gas that has passed through the furnace enters the exhaust flow path (7).

（８）は排気流路（７）に熱を供給する熱の発生源、（
９）は排気流路＋７１内に設けられた蓄熱体、ａｌは排
気流路（７）への空気供給流路である。熱の発生源（８
）と、蓄熱体（９）と、空気供給流路Ｑｌとはそれらが
共働して排気ガスの昇温装置を構成する。この装置にお
ける熱の発生源（８）は炉内の焼成用空間より排出され
る還元性高温ガスを燃焼開始温度以上の温度にまで昇温
させるに足る発熱容量をもつものとされている。(8) is a heat generation source that supplies heat to the exhaust flow path (7), (
9) is a heat storage body provided in the exhaust flow path +71, and al is an air supply flow path to the exhaust flow path (7). Source of heat (8
), the heat storage body (9), and the air supply channel Ql work together to constitute an exhaust gas temperature raising device. The heat generating source (8) in this apparatus is said to have a heat generation capacity sufficient to raise the temperature of the reducing high temperature gas discharged from the firing space in the furnace to a temperature equal to or higher than the combustion start temperature.

熱の発生源（８）はバーナ形式のものまたは電熱形式の
ものとして設けられるが、炉を移動し易くするにはバー
ナ形式のもの（例えばプロパンガスバーナ、都市ガスバ
ーナ）とすることが望１し贋。The heat generation source (8) is provided as a burner type or electric heating type, but in order to make the furnace easier to move, it is preferable to use a burner type (e.g. propane gas burner, city gas burner). .

上記昇温装置における蓄熱体（９）は発生源（８；が発
生する熱を高い効率の下に利用させるのに役立つ。The heat storage body (9) in the temperature raising device serves to utilize the heat generated by the generation source (8) with high efficiency.

発明の効果 灯油バーナを使用する陶芸炉はそれを還元焼成に使用す
るときに変化に富んだ作品を制作させるが、還元焼成時
に黒煙および煤の発生を伴うという大きな欠点をもつ。Effects of the Invention Although a pottery furnace using a kerosene burner allows the production of a wide variety of works when used for reduction firing, it has the major drawback of generating black smoke and soot during reduction firing.

本発明はこの欠点を簡単に回避させ、住宅地におＡても
この陶芸炉を還元焼成に使用し得るようにするものであ
る。The present invention allows this drawback to be easily avoided and the pottery furnace to be used for reduction firing even in residential areas.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本発明による陶芸炉の１例を示す縦断側面図、
第２図は第１図の２−２線方向に断面をとって示す横断
面図、第６図は第２図の一部を示す詳細図、第４図は陶
芸炉による焼成過程の説明図でちる。 第　１［２１FIG. 1 is a longitudinal side view showing an example of a pottery furnace according to the present invention;
Figure 2 is a cross-sectional view taken along line 2-2 in Figure 1, Figure 6 is a detailed view of a part of Figure 2, and Figure 4 is an explanatory diagram of the firing process in a pottery furnace. Dechiru. 1st [21

Claims (1)

【特許請求の範囲】[Claims] 　排気流路に熱を供給する熱の発生源と蓄熱体とを設け
ると共に排気流路内に空気を導入する空気導入系を設け
、炉内の焼成用空間より排出される還元性高温ガスを燃
焼開始温度以上の温度にまで昇温させる発熱容量を上記
熱の発生源に与えたことを特徴とする陶芸炉。A heat generation source and a heat storage body are provided to supply heat to the exhaust flow path, and an air introduction system is provided to introduce air into the exhaust flow path to combust the reducing high temperature gas discharged from the firing space in the furnace. A pottery furnace characterized in that the heat generation source has a heat generation capacity that raises the temperature to a temperature higher than the starting temperature.