Tatsuyuki Iizuka

Title: Innovations of Tatsuyuki Iizuka

Introduction

Tatsuyuki Iizuka is a notable inventor based in Chigasaki, Japan. He has made significant contributions to the field of refrigeration technology, holding a total of 4 patents. His work primarily focuses on electric compressors, which are essential components in modern refrigeration systems.

Latest Patents

Iizuka's latest patents include innovative designs for electric compressors. One of his patents describes a compressor that features a motor driven by a controller, which includes a rotor and a stator. This compressor operates in a hermetic container filled with refrigerant. The controller employs feedback control at low RPMs to manage the timing of switching elements based on rotor position signals. At high RPMs, it switches to open-loop control, allowing for efficient operation with reduced noise during PWM driving.

Another patent outlines a compressor that consists of a compressing section housed in a hermetic container and a motor section that drives the compressing section. This design incorporates a bored section on the compressing section's side and a motor with two rotor poles, featuring a rotor core embedded with permanent magnets. The use of a non-magnetic bearing within the bored section minimizes torque loss due to magnetic attraction and reduces eddy-current loss, resulting in a highly efficient compressor.

Career Highlights

Throughout his career, Tatsuyuki Iizuka has worked with prominent companies in the refrigeration industry, including Matsushita Refrigeration Company and Panasonic Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in compressor technology.

Collaborations

Iizuka has collaborated with several talented individuals in his field, including Hidetoshi Nishihara and Makoto Katayama. These collaborations have contributed to the advancement of refrigeration technology and the successful development of his patented inventions.

Conclusion

Tatsuyuki Iizuka's contributions to electric compressor technology have made a significant impact on the refrigeration industry. His innovative designs and patents reflect his dedication to improving efficiency and reducing noise in compressor systems. His work continues to influence the field and inspire future innovations.