Mitsubishi Hitachi Power Systems, Ltd.

Oki Electric Industry Co., Ltd.

Yukihiro Tominaga

Keigo Matsumoto

Kazuhiro Domoto

Naofumi Abe

Ryuichiro Tanaka

Akimasa Takayama

Keita Tsukahara

Jun Kasai

Atsushi Yuasa

A combustion burner includes a plurality of splitters (), (), () configured to divide a fuel gas flow by a widened portion where a width of the widened portion increases as the widened portion extends in the direction of the fuel gas flow. The splitters include: slitted splitters (), () configured to slits (SL) at a downstream end in the fuel gas flow; and non-slitted splitters () configured to adjacently to the slitted splitters (), (), each of the non-slitted splitters () configured to the widened portion at a downstream end in the fuel gas flow, and configured to a fixed width in a direction of the longitudinal axis.

Combustion burner and boiler equipped with the same

In this combustion burner and boiler, interference of ignition in a flame stabilizer is suppressed and flame stabilizing performance is improved by providing: a fuel nozzle which ejects a fuel gas that is a mixture of pulverized coal and air; a combustion air nozzle which ejects a fuel gas combustion air from outside of the fuel nozzle; a secondary air nozzle which ejects secondary air from the outside of the combustion air nozzle; and a flame stabilizer which comprises a first flame stabilizer main body which is arranged at the leading end of the fuel nozzle and separated by a prescribed space from the inner wall surface of the fuel nozzle and which forms a ring shape having as the center an axial line along the ejection direction of the fuel gas.

Combustion burner and boiler

A combustion burner including: a fuel nozzle () which ejects a fuel gas that is a mixture of fuel and air; a combustion air nozzle () which ejects air from an outer side of the fuel nozzle (); first members () which are arranged inside the fuel nozzle () and which each comprise a first inclined surface () inclined with respect to the flow of the fuel gas, and a first inclination end edge where the inclination of the first inclined surface () ends; and second members () which are arranged downstream of the first inclination end edges in the direction of fuel gas flow, and which each comprise a second inclined surface () inclined towards the first members () with respect to the fuel gas flow and a second inclination end edge where the inclination of the second inclined surface () ends.

To provide: a fuel nozzle () that can inject fuel gas in which fuel and air are mixed; a flame stabilizer () provided on an axial center side near a tip end of the fuel nozzle (); and a casing member () that partitions an inner flow channel in which the flame stabilizer () is provided and an outer flow channel on an outer side of the inner flow channel, inside the fuel nozzle (), where the flow channel cross-sectional area of the inner flow channel partitioned by the casing member () expands in the flow direction of the fuel gas.

Combustion burner and boiler provided with same

Dust proof clothing is made of a given fabric structure defined by multiple first fiber groups which are each composed of linear fibers and extend in a first direction, and multiple second fiber groups which are each composed of curved fibers and extend in a second direction intersecting the first direction. The first and second fiber groups are mutually interwoven such that an inside surface has more of the second fiber groups exposed than the first fiber groups, and such that an outside surface which is opposite said inside surface has more of the first fiber groups exposed than said second fiber groups. The dust proof clothing is worn such that the inside surface is in contact with a wearer of the dust proof clothing.

Method for handling semiconductor wafers in a clean room by wearing dust proof clothing

The object of the present invention is to provide dust proof clothing comprised such that on the inside of the dust proof clothing in contact with the wearer a lot of dust is caught, and on the outside of the dust proof clothing dust does not attach easily, and which has superior strength. Compared to the inside surface of the dust proof clothing the outside surface has fewer dust catching spaces, and compared with the outside surface the inside surface has more dust catching spaces so that on the inside surface more curved fibers are exposed than linear fibers and on the outside surface, more linear fibers are exposed than curved fibers.

Growing community of inventors

Tokyo, Japan

Yukihiro Tominaga