Changheng Liu

Title: Changheng Liu: Innovator in Cryocooler Technology

Introduction

Changheng Liu is a notable inventor based in Nishitokyo, Japan. He has made significant contributions to the field of cryocooler technology, holding a total of 2 patents. His work focuses on innovative methods to enhance the efficiency and functionality of cryocoolers.

Latest Patents

Changheng Liu's latest patents include a cryocooler and a control method for a cryocooler. The first patent describes a cryocooler that consists of a compressor, an expander driven by a motor, and an inverter that controls the operation frequency of the motor. It features a high-pressure line connecting the compressor to the expander and a low-pressure line for gas collection. A pressure measurement unit is included to measure pressures or differential pressure, while a controller adjusts the motor's operation frequency based on the differential pressure compared to a target pressure. The second patent outlines a cryocooler that includes a displacer, a cylinder for expansion, and a Scotch yoke mechanism for driving the displacer. It also incorporates a rotary valve for switching connections between the expansion space and the compressor, along with a motor to drive the mechanisms.

Career Highlights

Changheng Liu is currently employed at Sumitomo Heavy Industries, Ltd., where he continues to develop innovative technologies in cryocooler systems. His expertise and dedication to research have positioned him as a key figure in his field.

Collaborations

He collaborates with Qian Bao, contributing to advancements in cryocooler technology through their combined efforts.

Conclusion

Changheng Liu's work in cryocooler technology exemplifies innovation and dedication to improving efficiency in thermal management systems. His patents reflect a commitment to advancing the field and enhancing the functionality of cryogenic applications.