Jean Fouin

Title: Innovations of Jean Fouin in Submersible Motor Technology

Introduction

Jean Fouin is a notable inventor based in Angouleme, France. He has made significant contributions to the field of submersible motor technology, holding 2 patents that showcase his innovative approach to ensuring fluid-tightness in challenging environments.

Latest Patents

Fouin's latest patents include a device for providing fluid-tightness of a submersible motor and a motor designed for operation under conditions of total and permanent immersion, particularly in oil wells and geothermal boreholes. This invention features a rotary packing-gland at the emergent end of the motor's drive shaft. The motor casing is filled with oil, which is circulated through an axial duct of the drive shaft, driven by a disk with radial ducts. A second circuit, consisting of a system of ducts, maintains overpressure at the packing-gland, resulting in a controlled leakage flow between the two portions of the packing-gland.

Another significant patent is for a motor-pump set for boreholes, which includes a method of protection against solid particle ingress, such as sand. This motor-pump set utilizes two coaxial shafts and a fluid circuit that protects the rotary packing-gland. Pumped fluid is withdrawn from an intermediate space of the pump and returned upstream through a duct within the pump shaft, lubricating the bearings as it flows. The fluid stream discharged from the last bearing is directed near the packing-gland and propelled through radial discharge ducts by centrifugal force.

Career Highlights

Jean Fouin is associated with Moteurs Leroy-Somer, a company known for its expertise in electric motors and drive systems. His work has significantly advanced the technology used in submersible motors, particularly in applications requiring high reliability and performance under extreme conditions.

Collaborations

Fouin has collaborated with notable coworkers, including Michel Galais and Christian Sardain, who have contributed to the development of innovative solutions in the field of motor technology.

Conclusion

Jean Fouin's contributions to submersible motor technology reflect his innovative spirit and dedication to solving complex engineering challenges. His patents demonstrate a commitment to enhancing the reliability and efficiency of motors used in demanding environments.