| 摘要 |
PROBLEM TO BE SOLVED: To provide a piping member capable of piping most compactly in a restricted space, while suppressing the increase in the flow resistance of a fluid, in the case where a U-turn shaped folded-back pipe is formed on the exit side or the entrance side of a fluid handling device.SOLUTION: An air cleaner side piping 31 for constituting a U-turn shaped folding-back conduit on the discharge side of an air cleaner 22 is formed of a folded-back part 32a and a straight part 32b. The straight part 32b is shaped into a section of a substantially right triangle so that it may partially enter a triangular space T formed of the air cleaner 22 and an air cleaner installation surface A, and so that the sectional shape of the folded-back part 32a is gradually changed, while keeping the sectional area constant, from a circular shape into a generally right triangle. |
