FIELD: process engineering.
SUBSTANCE: invention relates to electric tools. Proposed device comprises cylindrical case, motor and air intake. Motor is arranged in said cylindrical case. Air intake is arranged to allow feeding outside air into cylindrical case. It comprises first and second air intakes and electrically driven blower. Said blower is arranged ahead of said first and second air intakes to suck outside air into cylindrical case. Revolving blower creates airflow directed from cylindrical case rear to its front. Note here that airflows of both intakes are mixed to make swirling flow inside said case.
EFFECT: decreased dust sedimentation.
6 cl, 4 dwg
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