Hidefumi Nakao

Title: Innovations by Hidefumi Nakao

Introduction

Hidefumi Nakao is a notable inventor based in Kiyose, Japan. He has made significant contributions to the field of centrifugal compressors. His innovative approach has led to the development of a unique method and apparatus that enhances the operating range of these machines.

Latest Patents

Nakao holds a patent for a "Method and apparatus for expanding operating range of centrifugal compressor." This invention features a housing with an annular treatment cavity in the shroud wall. The shroud wall includes a first opening that connects the installed zone of an impeller to the treatment cavity. Additionally, a second opening allows communication between the treatment cavity and a zone upstream of the first opening, facilitating air circulation during low-flow-rate operations. The design incorporates louvers arranged in a circumferentially equidistant manner, which are inclined in the reverse direction of the impeller's rotation. This configuration ensures that the air drawn into the treatment cavity is discharged with a directional flow that counteracts the impeller's rotation.

Career Highlights

Hidefumi Nakao is associated with Ishikawajima-Harima Jukogyo Kabushiki Kaisha, a prominent company in the engineering sector. His work there has focused on advancing compressor technology, showcasing his expertise and innovative spirit.

Collaborations

Due to space constraints, the details of collaborations will not be included.

Conclusion

Hidefumi Nakao's contributions to the field of centrifugal compressors demonstrate his innovative capabilities and commitment to engineering excellence. His patent reflects a significant advancement in compressor technology, which can lead to improved efficiency in various applications.