| 摘要 |
A sleeve 2 e having the length of the side surface thereof made longer at a position away from the compressor outlet 11 is connected to the upstream-side end of an external cylinder 2 c. By this sleeve 2 e, compressed air flowing along the inside wall surface of a casing 4 flows, making a turn, in a space between the sleeve 2 e and the inside wall surface of the casing 4 , thereby providing the compressed air flow being introduced from the sleeve 2 e to the external cylinder 2 c with uniformity.
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