| 摘要 |
PROBLEM TO BE SOLVED: To suppress leakage of a working fluid from a high pressure side to a low pressure side by mechanical characteristic, in a compressor including a helical compressing mechanism portion.SOLUTION: A compressor 1 compresses a working fluid in a compression chamber 23 spirally formed by a blade 24 between a cylinder 20 and a roller 21. The blade 24 has a first dividing portion 240 and a second dividing portion 241 divided so that parts fitted to a spiral groove are arranged in the direction of a rotating shaft of the roller 21. The first dividing portion 240 has a first pressure receiving face 240a to which the force in the direction to separate the first dividing portion 240 from the second dividing portion 241 acts by a pressure of the working fluid entering the spiral groove 22, on a tip part opposed to a bottom surface 211 of the spiral groove. The second dividing portion 241 has a second pressure receiving face 241a to which the force to separate the second dividing portion 241 from the first dividing portion 240 acts, by the pressure of the working fluid entering the spiral groove 22, on a tip part opposed to the bottom surface 211 of the spiral groove. |
