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Title:
NITROGEN OXIDE LOW-GENERATION PREMIXING BURNER
Document Type and Number:
Japanese Patent JPH074620
Kind Code:
A
Abstract:

PURPOSE: To restrain the generation of nitrogen oxides by effective recirculation combustion.

CONSTITUTION: Burner port rows 2 comprising a large number of burner ports 3 are formed on a metal burner port plate 1 and an exhaust gas passage interval 4 is formed between adjacent burner port rows 2, and the plate 1 is formed into a corrugated shape, which plate is disposed in a burner port section 5 of a premixing burner. When a premixed gas is introduced into the section 5, the premixed mixture is ejected from each of the burner ports 3 so that flames 6 are formed. The flames 6 are generated in each row 2; however, since there is the interval 4 between the adjacent rows 2, when the premixed gas is ejected from each port 3, good negative pressure is formed in the interval 4 and part of combustion gas is drawn by ejection energy so that effective recirculation combustion is performed, whereby the generation of nitrogen oxides can be restrained. Such recirculation combustion is performed in each row 2; however, since a large number of ports 3 are formed in the row 2, the formed flames are numerous divided-flames. Consequently, thermal expansion is absorbed and the surface of burner becomes larger and hence recirculation can be performed effectively.


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Inventors:
Ota, Kiyoshi
Kobayashi, Setsuo
Hosoyama, Kisaburo
Application Number:
JP1993000132224
Publication Date:
January 10, 1995
Filing Date:
June 02, 1993
Export Citation:
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Assignee:
TOKYO GAS CO LTD
HOSOYAMA NEKKI KK
International Classes:
F23D11/40; F23D14/08; F23D14/48; (IPC1-7): F23D14/08; F23D11/40; F23D14/48
Attorney, Agent or Firm:
三觜 晃司