JPS6238089Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a combustion furnace. When installing pre-throttled high-speed burners in various combustion furnaces, the burners are often made of refractories due to their heat resistance limits, and if they are made of refractories, their mechanical strength is low and they are prone to cracking. It has shortcomings such as short lifespan.
In the case of metal, even if a special structure is adopted to allow combustion air to flow through the inner wall, the cooling effect of the combustion air is small compared to the amount of radiant heat transferred from inside the furnace, and there is a problem of combustion. It cannot be used for high temperature applications. The present invention provides a combustion furnace that eliminates all of these conventional drawbacks at once. The details of the figure are as follows. Reference numeral 1 denotes a furnace wall of a combustion furnace. A burner charging hole 2 is formed in the furnace wall 1, and a pre-squeezed burner 3 is installed in the burner charging hole 2 with its tip 4 retracted. Further, the burner charging hole 2 near the tip 4 of the burner 3 is filled with a refractory 6, leaving a combustion gas ejection hole portion 5. The combustion gas generated in the pre-throttled burner 3 (internal structure is omitted) is ejected from the combustion gas outlet into the furnace to start operation, but when the temperature inside the furnace reaches about 1500℃. , 3 will burn out the tip of the metal burner due to the radiant heat, but in the present invention, as described above, the burner insertion hole 2 near the burner tip 4 is filled with the refractory 6, and the burner tip 4 is Since it is set back from the inner surface of the furnace wall, radiation inside the furnace can be completely shielded, so the vicinity of the tip 4 can be kept at a low temperature and will not burn out at all. Therefore, the entire burner can be made entirely of metal, which has strong mechanical strength and good workability. In addition, since the burner is installed and then filled with refractories, the burner and refractory have separate structures, which has various excellent effects such as no damage to the refractory due to the difference in thermal expansion between the burner and the refractory. It is something.

[Brief explanation of the drawing]

The figure shows an embodiment of the present invention. Reference numerals 1...Furnace wall, 2...Burner charging hole, 3...Pre-squeezed burner, 4...Burner tip, 5...Combustion gas nozzle portion, 6...Refractory.

Claims (1)

[Scope of utility model registration request] A burner charging hole is formed in the furnace wall, and a pre-drawn metal burner is inserted into the burner charging hole with its tip retracted, and a combustion gas injection hole is provided in the burner charging hole near the tip of the burner. A combustion furnace that is partially filled with refractory material.