Study of Helical Structure for High Performance about “Helical Compression Mechanism”

Abstract

Helical compression mechanism is the newly developed one that can compress gas by using helical components. This mechanism was designed in 1987, and the helical compressors were manufactured for refrigerators first in the world in 2000. This mechanism consists of three main parts, helical blade, roller, and cylinder. The roller with helical blade on its surface is positioned in the cylinder, and several compression chambers are formed being surrounded by those three parts. As the helical shape has uneven pitch, the volume of each chamber becomes smaller along the rotation, and the gas is transferred and compressed continuously. Uneven pitch shape is very important to realize high performance of helical compressor. This study has the object to see the best shape of helical structure to maximize the performance, and make sure how to decide the helical shape for each compressor specification as its capacity, compression ratio, and so on.