Title:
FUEL GAS NOZZLE AND GAS BURNER COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/026657
Kind Code:
A1
Abstract:
Provided are: a fuel gas nozzle that can uniformly dilute fuel gas with dilution air and prevent the generation of soot; and a gas burner comprising the same. The present invention comprises: a main supply pipe (6) which is provided with a downstream pipe section (6a) along a jetting direction of fuel gas to inside a furnace (4a), an upstream pipe section (6b) provided in a direction intersecting the jetting direction and connected to the downstream pipe section (6a), a bent section (6c) formed by the upstream pipe section (6b) and the downstream pipe section (6a), and an extending section (6d) extended from the bent section (6c) to the side opposite the jetting direction, and in which the fuel gas is circulated from the upstream pipe section (6b) toward the downstream pipe section (6a); and a dilution air jet pipe (7) which is inserted from the extending section (6d) along the jetting direction of the fuel gas and jets the dilution air toward the jetting direction of the fuel gas inside the downstream pipe section (6a) of the main supply pipe (6). A plurality of dilution air jet holes (7b) are provided in the dilution air jet pipe (7), the dilution air jet holes having a hole diameter smaller than the inner diameter of the dilution air jet pipe (7). A jet head section (7a) of the dilution air jet pipe (7) is positioned, in the insertion direction of the dilution air jet pipe (7), in a range (R) from an inner wall surface of the upstream pipe section (6b) on the extending section (6d) side to the pipe axis (C) of the upstream pipe section (6b).
Inventors:
KATAYAMA TOMOKI (JP)
FUJIHANA SHUNJI (JP)
FUJIHANA SHUNJI (JP)
Application Number:
PCT/JP2022/024864
Publication Date:
March 02, 2023
Filing Date:
June 22, 2022
Export Citation:
Assignee:
CHUGAI RO KOGYO KAISHA LTD (JP)
International Classes:
F23D14/22; F23D14/64; F23N1/02
Domestic Patent References:
| WO2004065494A1 | 2004-08-05 |
Foreign References:
| JP2002005415A | 2002-01-09 | |||
| CN110887040A | 2020-03-17 |
Attorney, Agent or Firm:
SUZUKI Satoru (JP)
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