Company Filing History:
Years Active: 2003-2017
Title: Shigeyuki Koyama: Innovator in Electric Compressor Technology
Introduction
Shigeyuki Koyama is a notable inventor based in Isesaki, Japan. He has made significant contributions to the field of electric compressor technology, holding a total of six patents. His innovative designs focus on enhancing the efficiency and functionality of electric compressors.
Latest Patents
One of Koyama's latest patents is an electric compressor that compresses a coolant by driving a compression mechanism with a motor controlled by a drive circuit. This compressor features a lead pin connected to the current output section of the drive circuit, along with a connector that ensures electrical continuity between the drive circuit and the motor. The design includes a connector terminal that contacts the lead pin during mounting, a connector housing, a vacuum flow path, and a sealing member to maintain electrical insulation and internal pressure.
Another significant patent is a start-up control device and method for an electric scroll compressor. This device utilizes a thermistor and a pressure sensor to detect the temperature and pressure of the suction refrigerant before the compressor starts. The controller determines the presence of liquid refrigerant and selects either a normal start-up mode or a liquid-discharge mode, regulating the motor's rotational speed accordingly.
Career Highlights
Koyama has worked with prominent companies in the industry, including Sanden Corporation and Sanden Holdings Corporation. His experience in these organizations has allowed him to refine his skills and contribute to advancements in compressor technology.
Collaborations
Koyama has collaborated with notable colleagues such as Masanori Taguchi and Satoru Saito. Their combined expertise has fostered innovation in the field of electric compressors.
Conclusion
Shigeyuki Koyama's contributions to electric compressor technology through his patents and collaborations highlight his role as a leading inventor in this field. His work continues to influence the development of efficient and effective compressor systems.