Hisato Arimura

Title: Hisato Arimura: Innovator in Gas Turbine Technology

Introduction

Hisato Arimura is a prominent inventor based in Takasago, Japan. He has made significant contributions to the field of gas turbine technology, holding a total of four patents. His innovative designs focus on enhancing the efficiency and stability of gas turbines, which are crucial for various industrial applications.

Latest Patents

One of Hisato Arimura's latest patents is for a gas turbine combustor that achieves homogeneous air inflow by eliminating turbulence. This design reduces combustion instability, which is a common challenge in gas turbine operations. The combustor features a pilot nozzle at its center, surrounded by eight main nozzles. The air flows around these nozzles to the leading end of the combustor, facilitating effective combustion. Additionally, an annular flow ring with a semicircular section is positioned at the upstream end of the combustion cylinder. This flow ring, along with a porous plate and a surrounding rib, ensures that the air inflow is smoothly turned and straightened, minimizing disturbances and enhancing combustion stability.

Another notable patent by Arimura is the design of a split ring for gas turbine casings. This split ring is composed of multiple segments arranged circumferentially on the inner wall of the casing. A predetermined clearance is maintained between the inner face of the split segments and the rotor blade tips, allowing for thermal expansion. The design includes an inclined plane on the upstream end face of the segments, which prevents swirl flow from the rotating rotor blades from impacting the segments, thereby reducing temperature rise.

Career Highlights

Hisato Arimura is associated with Mitsubishi Heavy Industries Limited, a leading company in the manufacturing of heavy machinery and equipment. His work at Mitsubishi has allowed him to focus on advancing gas turbine technology, contributing to the company's reputation for innovation and excellence in engineering.

Collaborations

Throughout his career, Arimura has collaborated with notable colleagues, including Yasuoki Tomita and Yutaka Kawata. These collaborations have fostered a creative environment that encourages the development of cutting-edge technologies in the field of gas turbines.

Conclusion

Hisato Arimura's contributions to gas turbine technology exemplify his innovative spirit and dedication to engineering excellence. His patents reflect a deep understanding of combustion dynamics and thermal management, making significant strides in improving gas turbine performance.