JPS62910U

JPS62910U -

Info

Publication number: JPS62910U
Application number: JP8887685U
Authority: JP
Priority date: 1985-06-14
Filing date: 1985-06-14
Publication date: 1987-01-07

Description

[Brief explanation of the drawing]

第１図は本考案の第１実施例を示す側断面及び
系統図、第２図は本考案の第２実施例を示す側断
面図、第３図は第２図のＡ―Ａ矢視図、第４図は
第２図のＢ―Ｂ矢視図、第５図は本考案の第３実
施例を示す側断面、第６図は第５図のＣ―Ｃ矢視
図、第７図は第５図のＤ―Ｄ矢視図、第８図は従
来のバーナを示す側断面と系統図である。１……火炉壁、５ａ……３次エアレジスタ、５
ｂ……４次エアレジスタ、６ａ……１次微粉炭ノ
ズル、６ｂ……２次微粉炭ノズル、７……起動用
油バーナ、９ａ……１次通路、９ｂ……２次通路
、９ｃ……３次通路。 Fig. 1 is a side sectional view and system diagram showing the first embodiment of the present invention, Fig. 2 is a side sectional view showing the second embodiment of the invention, and Fig. 3 is a view taken along the line A--A in Fig. 2. , FIG. 4 is a view taken along the line B-B in FIG. 2, FIG. 5 is a side cross-section showing the third embodiment of the present invention, FIG. 6 is a view taken along the line C-C in FIG. 5, and FIG. 5 is a view taken along the line DD in FIG. 5, and FIG. 8 is a side sectional view and a system diagram showing a conventional burner. 1... Furnace wall, 5a... Tertiary air register, 5
b... Quaternary air register, 6a... Primary pulverized coal nozzle, 6b... Secondary pulverized coal nozzle, 7... Starting oil burner, 9a... Primary passage, 9b... Secondary passage, 9c... ...Third passage.

Claims

[Claims for Utility Model Registration] 1. In a burner device having an annular passage with multiple coaxial cores, at low load, fuel is supplied only to the central passage, and combustion air is supplied to the other passages, and when the load is larger than that, When the load is larger than this, multiple annular passages are formed so that more fuel is supplied than the other passage, and when the load is even greater than this, more fuel is supplied than the other passage, and the load is reached one after another. Features a high turndown ratio burner device. 2. In the high turndown ratio burner device according to claim 1 of the utility model registration claim, when the burner outlet end is viewed from inside the furnace, the fluid outlet in the central passage and the outlet of the passage adjacent thereto are located alternately. Part of the passage, including the exit end, is partitioned into multiple sections using a partition wall. 3. The high turndown ratio burner device according to claim 2, wherein the partition wall is spirally formed. 4. A high turndown ratio burner device according to any one of claims 1 to 3, in which the passageway is a passageway for gas containing pulverized coal.