Title:
COMBUSTION TUBE AND GAS BURNING DEVICE EQUIPPED THEREWITH
Document Type and Number:
Japanese Patent JP3687098
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a combustion tube easy to be stably formed into a complicated shape and less in manufacturing costs while compatibly securing heat resisting durability and improving forming quality.
SOLUTION: A second highly formable raw metal material (iron based) 92 and first highly heat resistant raw metal materials (SUS based) 91, 91 are made to travel from each roll to the center and to both sides, respectively. Both plate ends thereof abut on each other and are laser welded to form a metal flat material 9 in one unit. A press-forming machine is operated in synchronization with the metal flat material for press-forming recessed portions 81, 82 of a pair of plate members 8, 8 and cutting them off at a contour line 12. Both plate members are bent at a bending line 84a and closely joined in opposition to each other. A gas passage is formed by the recessed portions 81, 81 and a flame hole is formed by the recessed portions 82, 82.
Inventors:
Minoru Ikuta
Uehara Kozo
Shunji Tamba
Nakanobu Akinobu
Uehara Kozo
Shunji Tamba
Nakanobu Akinobu
Application Number:
JP2002359159A
Publication Date:
August 24, 2005
Filing Date:
December 11, 2002
Export Citation:
Assignee:
Noritsu Co., Ltd.
International Classes:
F23D14/08; F23D14/04; F23D14/10; (IPC1-7): F23D14/08; F23D14/04
Domestic Patent References:
| JP8233223A | ||||
| JP1054630U | ||||
| JP47009036U | ||||
| JP6246475A | ||||
| JP7158822A |
Attorney, Agent or Firm:
Ichiro Oneda