Keishi Nakagaki

Title: Keishi Nakagaki: Innovator in Compressor Technology

Introduction

Keishi Nakagaki is a prominent inventor based in Kariya, Japan, known for his significant contributions to compressor technology. With a total of seven patents to his name, Nakagaki has made notable advancements in the design and functionality of compressors, particularly in the automotive industry.

Latest Patents

One of Nakagaki's latest inventions is a double-headed piston type compressor. This innovative design includes front and rear housings, a cylinder block that defines a crank chamber and multiple cylinder bores, and a double-headed piston that reciprocates within the cylinder bores. The compressor features a rotary shaft supported by a shaft hole, with compression chambers defined by the cylinder bores and a suction chamber defined by the front housing. An introduction passage with a rotary valve allows for the efficient introduction of refrigerant from the suction chamber into the compression chambers. Additionally, the introduction passage includes a communication passage in the cylinder block, suction passages connecting the shaft hole to the compression chambers, and a recessed passage on the rotary shaft that connects intermittently to the suction passages based on the shaft's rotation.

Another significant patent involves a compressor design that prevents the deformation of a retainer while maintaining the sealing performance of a metal gasket. This design includes a discharge valve forming plate positioned between a valve plate with discharge ports and the cylinder block assembly. The retainer, which restricts the opening of the discharge valve, is integrally formed in the metal gasket, ensuring effective operation without compromising the compressor's integrity.

Career Highlights

Throughout his career, Nakagaki has worked with notable companies, including Toyota Industries Corporation and Toyota Jidosha Kogyo Co., Ltd. His experience in these organizations has allowed him to refine his skills and contribute to the development of advanced compressor technologies.

Collaborations

Keishi Nakagaki has collaborated with talented individuals such as Hayato Ikeda and Noriyuki Shintoku. These partnerships have fostered innovation and creativity in his projects, leading to the successful development of his patented technologies.

Conclusion

Keishi Nakagaki's work in compressor technology has significantly impacted the industry, showcasing his inventive spirit and dedication to innovation. His patents reflect a deep understanding of mechanical engineering and a commitment to improving compressor efficiency and performance.