Title:
MELTING FURNACE
Document Type and Number:
WIPO Patent Application WO/2023/209944
Kind Code:
A1
Abstract:
A melting furnace according to the present invention comprises: a preheating tower (12) having a preheating chamber (12b) installed therein; a melting chamber (14); a combustion chamber (16); and a combustion burner (18). Inside a furnace body made of a refractory material for forming the preheating tower (12), an exhaust gas branch pipe (20) for connecting an upper part of the preheating chamber (12b) with the combustion chamber (16) is installed. In an upper part in the furnace body of the preheating tower (12), a heat exchange loop pipeline (22) which surrounds the preheating chamber (12b) is installed. An outside air introduction means (24) for introducing outside air is attached to the heat exchange loop pipeline (22). A connection nozzle (26) for connecting the heat exchange loop pipeline (22) and the exhaust gas pipe (20) is attached therebetween. This connection nozzle (26) is formed into a funnel shape with the inner diameter reduced toward the exhaust gas branch pipe (20) side, and the tip of the nozzle having a smallest diameter is oriented to the opening of the exhaust gas branch pipe (20) at the combustion chamber (16) side.
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Inventors:
NISHI NORIO (JP)
NISHIKAWA NAOHISA (JP)
YAMASHITA NAOMI (JP)
NISHIKAWA NAOHISA (JP)
YAMASHITA NAOMI (JP)
Application Number:
PCT/JP2022/019266
Publication Date:
November 02, 2023
Filing Date:
April 28, 2022
Export Citation:
Assignee:
DAIKI ENGINEERING CO (JP)
International Classes:
F27B3/04; F27B3/10; F27D13/00
Foreign References:
| JPS63282484A | 1988-11-18 | |||
| JP2015034665A | 2015-02-19 | |||
| JPS59200185A | 1984-11-13 | |||
| JPS61205399U | 1986-12-25 |
Attorney, Agent or Firm:
MORI Yoshiaki et al. (JP)
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