Patent ID: 6633021
Filing Date: 2003-10-14
Classification: B23K

Abstract:
A soldering iron where a forward end tip is heated by heating means built in a soldering iron main body, whereas a heating gas flow is generated in a heating gas flow generating chamber by heating of said heating means so as to blowout to a periphery of said forward end tip, wherein:a nozzle section is provided to said forward end tip so as to surround its periphery as well as to be opened forward, whereas an orifice section is formed between said heating gas flow generating chamber and the nozzle section; and a diameter of said orifice section is set to a dimension such that a gas supplied into said heating gas flow generating chamber by constant pressure is heated to be thermally expanded in said heating gas flow generating chamber by heating of said heating means, and a back pressure of said thermally expanded heating gas and a pressure of a gas continuously supplied are balanced in said heating gas flow generating chamber so that a part of the heating gas heated to a predetermined temperature is subject to blowout from said orifice section to said nozzle section, whereas said gas supplied continuously is mixed with the thermally expanded heating gas by a convection so as to be preheated.