JPH0262397U

JPH0262397U -

Info

Publication number: JPH0262397U
Application number: JP15350288U
Authority: JP
Priority date: 1988-02-15
Filing date: 1988-11-28
Publication date: 1990-05-09

Description

[Brief explanation of drawings]

第１図は本件第一の考案の一例を示す雰囲気ガ
ス循環式電気炉の縦断面図、第２図は第１図Ａ―
Ａ断面図、第３図は本件第二の考案の具体例を示
す縦断面図、第４図及び第５図は従来方式の縦断
面略図である。図中、１及び２：耐火物層、３：熱交換部、４
：エジエクター部、４′：整流室、５：炉天井、
６：焼成室、７，７′，７″：多孔体壁、８：発
熱体、９：加熱室、１０：排気室、１１：熱交換
機構、１２：ガス供給管、１３：吹出ノズル、１
４：エジエクター、１５：被熱物、１６：鉄皮、
２０：回転フアン、２１，３３：発熱体、２２：
金属製箱、２３：側壁（穿孔した）、２４，３４
：被熱物、２５：空間、３１：炉床、３２：炉内
面。 Figure 1 is a longitudinal sectional view of an atmospheric gas circulation type electric furnace showing an example of the first invention of the present invention, and Figure 2 is Figure 1A-
A sectional view and FIG. 3 are vertical sectional views showing a specific example of the second invention, and FIGS. 4 and 5 are longitudinal sectional views of conventional systems. In the figure, 1 and 2: refractory layer, 3: heat exchange section, 4
: Ejector section, 4': Rectification chamber, 5: Furnace ceiling,
6: Firing chamber, 7, 7', 7'': Porous body wall, 8: Heating element, 9: Heating chamber, 10: Exhaust chamber, 11: Heat exchange mechanism, 12: Gas supply pipe, 13: Blowout nozzle, 1
4: Ejector, 15: Heated object, 16: Iron skin,
20: Rotating fan, 21, 33: Heating element, 22:
Metal box, 23: Side wall (perforated), 24, 34
: Heated object, 25: Space, 31: Hearth, 32: Furnace inner surface.

Claims

[Scope of Claim for Utility Model Registration] (1) In a box-type electric furnace in which the inner peripheral surface of the steel shell is lined with a refractory material, the lower part of the electric furnace is provided with a heat exchange section sequentially from below by two upper and lower refractory layers 1 and 2. The upper refractory layer 1 and the furnace ceiling 5 are partitioned by two porous walls 7, 7' to form a firing chamber 6. A heating chamber 9 containing a large number of heating elements 8 is provided through the porous wall 7, and an exhaust chamber 10 is provided on the other side through the porous wall 7'. Ambient gas is supplied through a gas supply pipe 12 equipped with a heat exchange mechanism 11, and a blowout nozzle 13 attached to the tip of the gas heat exchange mechanism 11 is disposed at the inlet of an ejector 14 provided in the ejector section 4. An atmospheric gas circulation electric furnace characterized in that the ejector section 4 is communicated with the heating chamber and the exhaust chamber 10. (2) In a box-type electric furnace whose inner circumferential surface of the steel shell is lined with refractory material, the lower part of the electric furnace is divided into a heat exchange section 3 and an ejector section 4 from below by two upper and lower refractory layers 1 and 2. , the upper refractory layer 1 and the furnace ceiling 5 are partitioned by three porous walls 7, 7', 7'' to form a firing chamber 6 and a heating chamber 9; A heating chamber 9 surrounded by the porous walls 7, 7'' and containing a large number of heating elements 8 is provided through the porous wall 7, and the other side is evacuated through the porous wall 7'. A chamber 10 and the heat exchange section 3
Atmospheric gas is supplied through a gas supply pipe 12 equipped with a heat exchange mechanism 11 with the exhaust gas, and a blowout nozzle 13 attached to the tip of the heat exchange mechanism 11 is arranged at the inlet of an ejector 14 provided in the ejector section 4. An atmospheric gas circulation electric furnace characterized in that the ejector section 4 is connected to a rectification chamber 4', a heating chamber 9, and an exhaust chamber 10.