Noritz Corporation

Toshio Watanabe

Takashi Akiyama

Takeshi Wakada

Norihide Wada

Yasutaka Kuriyama

Keigo Fukunishi

Ryosuke Umakoshi

Itsuo Nagai

Yoshinori Kanda

Takashi Wakatake

There is provided a flame hole formation memberwhich is inserted and mounted from above in a third plate memberused to form a central rich-side flame hole row. As the flame hole formation member, a pair of flame hole formation partseach used to form a respective lean-side flame hole roware connected by bridge formation partsat their upper end positions, with a predetermined distance held between the flame hole formation parts. The bridge formation partis fitted from above into an engagement grooveformed in the upper end edge of the third plate member, whereby the pair of the flame hole formation partsare assembled so as to sit astride the upper end edge of the third plate member

Rich-lean combustion burner and combustion apparatus

In a rich-lean combustion burner, each of outer rich-side flame holes disposed on both outer sides is supplied with rich-side mixture in the same amount and mixing state as the others. A lower end part of a central rich-side burner part is projected into an interior of a tubular part to which a rich-side mixture is introduced. First communication holes are opened, respectively, in both side walls of the lower end part. A second and a third communication holes in fluid communication with an outer rich-side burner part are opened in a tubular part. The second and the third communication holes are oriented so as to face each other without any obstruction, other than a space, therebetween. Furthermore, a pocket part which is a space part adapted to collect and accumulate dust particles is formed on the downstream side up to a closed end.

A combustion apparatusincludes a plurality of burners, a plurality of fuel supply channels, a blower, an air supply passage, and a pressure regulator. The burnersare divided into a plurality of burner groups. The pressure regulatoris branched at a portion located immediately after a gas outletat downstream of the regulatorand connected to the respective fuel supply channels, so as to regulate gas supplied at a primary pressure to gas at a secondary pressure in response to a predetermined signal pressure sensed from one selected from a part of the air supply passageand the blowerand to discharge the regulated gas through the pressure regulator. The fuel supply channelseach are configured to perform fuel supply to the respective burner groupsand are provided with a switching valvefor either shutting off or reducing the fuel supply to at least a part of the burner groups

Combustion apparatus

Growing community of inventors

Hyogo, Japan

Toshio Watanabe