| 摘要 |
PROBLEM TO BE SOLVED: To improve noise insulation and vibration prevention performance by arranging a means for damping pulsation on air flow passages for compressed air generation devices, etc. SOLUTION: An air flow passage 6 is arranged for introducing compressed air generated by a compressor 7 to a discharge port 7. The air flow passage 6 is branched to a short flow passage 6a and a long flow passage 6b, on the way thereof, namely, on an upstream side of an air filter 4 where a sectional area of the air flow passage 6 is abruptly increased. The branched flow passages 6a, 6b join each other again in the vicinity upstream from the air filter 4. It is therefore possible to effectively reduce noises and oscillations caused by pulsation. When this circuit is adapted to a medical compressed air generating device, calm operation can be secured.
|
