| 摘要 |
PROBLEM TO BE SOLVED: To facilitate welding installation of suction pipes, and enhance pressure-resistance strength of an installing area by arranging a suction port of a cylinder by having a prescribed port extending angle from a suction port of the other cylinder, and installing the suction pipes juxtaposed in a sealed case so as to deviate by a port extending angle of the suction port. SOLUTION: A port extending angle of a suction port 41 of a first cylinder 13 is arranged by having a prescribed angle from the central axis passing through a blade 45, and a first suction pipe 38 at this time is extended from the suction port 41, and a sealed case 1 is installed in a position 55. A port extending angle of a suction port 41 of a second cylinder 15 is arranged by having a prescribed angle from the central axis passing through the blade 45, and is arranged so as to separate by a prescribed angle from a port extending angle of the suction port 41 of the first cylinder 13. A second suction pipe 39 at this time is extended from the suction port 41, and the sealed case 1 is installed in a position 57 deviated byαfrom a conventional piping installing position (a).
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