Hisao Fujihashi

Title: Hisao Fujihashi: Innovator in Geothermal Turbine Technology

Introduction

Hisao Fujihashi is a notable inventor based in Santa Rosa, CA (US). He has made significant contributions to the field of geothermal energy through his innovative designs. With a total of 2 patents, Fujihashi has established himself as a key figure in the development of advanced turbine technology.

Latest Patents

Fujihashi's latest patent focuses on a geothermal turbine. This geothermal turbine comprises a turbine casing, a turbine rotor shaft, and a plurality of nozzle diaphragm outer rings fixed to the turbine casing. Additionally, it features a plurality of nozzle diaphragm inner rings located radially inside the nozzle diaphragm outer rings. The design includes a plurality of nozzles placed between the nozzle diaphragm outer rings and the nozzle diaphragm inner rings, which form a steam passage. Furthermore, the turbine incorporates a plurality of rotor blades mounted on the turbine rotor shaft, which face the nozzles and form a blade cascade in a circumferential direction. A shroud is arranged on the tip of the rotor blade, and an overhang is attached to the nozzle diaphragm outer ring, extending downstream of the nozzles. This overhang has an inner surface facing radially outside the shroud, along with a plurality of sealing fins that protrude radially outward from the shroud and face the overhang.

Career Highlights

Fujihashi is currently employed at Kabushiki Kaisha Toshiba, where he continues to innovate in the field of geothermal technology. His work has contributed to advancements in energy efficiency and sustainability.

Collaborations

Some of his notable coworkers include Masataka Fukuda and Atsuhide Suzuki, who have collaborated with him on various projects.

Conclusion

Hisao Fujihashi's contributions to geothermal turbine technology highlight his role as an influential inventor in the energy sector. His innovative designs continue to pave the way for advancements in sustainable energy solutions.