SOUND INSULATION CASE

摘要

PROBLEM TO BE SOLVED: To provide a sound insulation case for a vacuum pump capable of reducing noise by using a sound insulation partition plate for causing multiple reflection in an enclosure. SOLUTION: This sound insulation case is provided with an enclosure for covering a noise generating source which has an outer opening part for intake air, and an opening part for a return air duct. At least one sound insulation partition plate is disposed between the noise generating source and the outer opening part for intake air.