| 摘要 |
PURPOSE:To enable soaking for short time by installing specifically burners to a soaking furnace which turns back the waste combustion gas of the burners in the upper part of the furnace wall along the inside wall of the furnace and discharges the same from the waste gas port in the lower part of the furnace wall. CONSTITUTION:A material 3 to be heated is housed into a combustion chamber 2 (in furnace) enclosed by a furnace body (refractories) 1 and the gas heated directly by burners to a high temp. (expressed as combustion gas) is introduced into the chamber 2 to heat the material 3 by convectional heat transmission. The combustion gas is discharged through a caste gas port 5 in the lower part of the furnace wall to a flue in order to balance the pressure in the furnace. The burners are constituted of two units one set 6A, 6B and are provided to face each other in such a way that the flame jet axes OA, OB of the respective burners intersect with each other in the chamber 2. The intersecting angle theta of the axes OA and OB is taken in an adequate range, by which the flames right after ejection into the furnace are made to collide against each other and the combined film-like flame is formed. |
