Hirosi Niijima

Title: Hirosi Niijima: Innovator in Refrigeration Technology

Introduction

Hirosi Niijima is a notable inventor based in Ouragun Gunmaken, Japan. He has made significant contributions to the field of refrigeration technology, particularly with his innovative designs that enhance the efficiency and functionality of refrigerating apparatuses.

Latest Patents

Niijima holds a patent for a refrigerating apparatus that is designed to reduce the start noise of the compressor. This apparatus includes a compressor, a condenser, a capillary tube, and an evaporator, all connected in a closed loop. A solenoid valve is installed between the outlet of the condenser and the capillary tube, along with a control unit that manages the operation of the compressor and the solenoid valve. The control unit is programmed to open and close the solenoid valve in response to the compressor's operation, specifically closing it before the compressor stops to minimize noise.

Career Highlights

Niijima is associated with Sanyo Electric Co., Ltd., where he has been able to apply his innovative ideas in practical settings. His work has contributed to advancements in refrigeration technology, making appliances quieter and more efficient.

Collaborations

Some of his notable coworkers include Takeshi Kawaguchi and Hisao Sagara, who have collaborated with him on various projects within the company.

Conclusion

Hirosi Niijima's contributions to refrigeration technology exemplify the impact of innovative thinking in engineering. His patent for a noise-reducing refrigerating apparatus showcases his commitment to improving everyday appliances.