| 摘要 |
PROBLEM TO BE SOLVED: To provide a screw compressor with a variable volume ratio Vi valve for adjusting a volume ratio Vi of a suction volume of a compressor to a discharge volume thereof.SOLUTION: A screw compressor 100 includes: a variable volume ratio Vi valve 6 for adjusting a volume ratio Vi of a suction volume of a compressor 7 to a discharge volume thereof; and a ball screw mechanism part 50 comprised of a rod 51 being a ball screw axis and a ball screw nut 52, wherein the variable volume ratio Vi valve 6 is connected with the ball screw mechanism part 50, and adjusts the volume ratio Vi owing to forward and reverse driving of the ball screw mechanism part 50. |
