Kanji Numao

Title: Kanji Numao: Innovator in Photoelectric Smoke Detection

Introduction

Kanji Numao is a prominent inventor based in Tokyo, Japan, known for his contributions to the field of smoke detection technology. With a total of 5 patents to his name, Numao has made significant advancements that enhance safety in various environments.

Latest Patents

One of his latest innovations is a photoelectric smoke sensor. This device features a housing that includes a circuit accommodation chamber and an inflow chamber. The inflow chamber is equipped with a light emitting portion and a light receiving portion. The design incorporates a first light and a first support portion surrounding the first light guide, along with a second light guide that directs light to the light receiving element. This configuration is designed to prevent flames from escaping the circuit accommodation chamber into the inflow chamber.

Another notable patent is an explosion-proofed photoelectric smoke detector. This device is engineered to prevent surrounding gases from igniting due to explosions occurring within the detector. It achieves this by filling spaces around the light-emitting and light-receiving devices with resin, which mitigates the risk of explosions caused by resin deterioration. The light emitting and receiving devices are strategically arranged outside of an explosion-proof enclosure, ensuring safety in hazardous environments.

Career Highlights

Kanji Numao is currently employed at Fenwal Controls of Japan, Ltd., where he continues to innovate in the field of smoke detection. His work has been instrumental in developing technologies that prioritize safety and reliability.

Collaborations

Throughout his career, Numao has collaborated with notable colleagues, including Masao Iguchi and Tadayuki Shibuya. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Kanji Numao's contributions to photoelectric smoke detection technology have significantly improved safety measures in various settings. His innovative designs and patents reflect his commitment to enhancing public safety through advanced technology.