Kazuhiro Shiraishi

Title: Innovations by Kazuhiro Shiraishi: A Journey through Patenting and Invention

Introduction

Kazuhiro Shiraishi is a notable inventor based in Kariya, Japan, recognized for his significant contributions to the field of motor-driven compressors. With an impressive portfolio of 9 patents, Shiraishi has demonstrated innovative thinking and technical expertise that has advanced modern compressor technology.

Latest Patents

One of Kazuhiro Shiraishi's latest inventions is a motor-driven compressor that features a sophisticated inverter device. This device includes a common mode choke coil comprised of an annular core and two windings wrapped around it. A unique design aspect involves an annular conductor that encompasses the windings, structured with a first metal plate and a second metal plate. This configuration allows induced currents to flow in a circumferential direction, effectively reducing changes in leakage magnetic flux from the core. The thermal design ensures that the second metal plate, thermally connected to the housing, has lower electrical and thermal resistance than the first plate, enhancing the overall efficiency of the compressor.

Additionally, Shiraishi has developed a noise-reducing unit that complements the common mode choke coil. This unit incorporates a first damping portion made from non-magnetic material which envelops both windings, allowing for induced currents to generate magnetic flux that mitigates leakage flux from the core. A second damping portion, crafted from magnetic material, is strategically placed opposite the first damping portion, further improving the noise reduction capabilities of the system.

Career Highlights

Kazuhiro Shiraishi has had a distinguished career, having worked with prominent companies such as Toyota Jidoshokki and Tokin Corporation. His work within these organizations has allowed him to refine his innovations and patent numerous technologies that benefit the automotive and electronics sectors.

Collaborations

Throughout his professional journey, Shiraishi has collaborated with talented individuals including Keiji Yashiro and Atsushi Naito. These partnerships have fostered an environment of creativity and technical problem-solving, further enhancing the quality and impact of their collective work.

Conclusion

Kazuhiro Shiraishi stands out as a resourceful inventor whose innovations have significantly influenced compressor technology. With a robust list of patents and a history of collaboration with leading companies and professionals, Shiraishi's work continues to inspire and facilitate advancements in the field. His contributions not only reflect technical skill but also a commitment to improving the efficiency and functionality of critical devices in various industries.