EXHAUST CIRCULATION TYPE VACUUM CLEANER

摘要

PURPOSE: An exhaust circulation type vacuum cleaner is provided to prevent reduction of suction force of a vacuum cleaner by keeping a constant pressure slope. CONSTITUTION: An exhaust circulation type vacuum cleaner has a suction path(323) on one side of a suction port(322) and a spray port(324) on the other side in the farthest position from the suction path. Thus, a spray area of circulation air sprayed from the spray port is spaced apart from a suction area of suction air. Since suction force generated from the suction port is not offset by the spray pressure generated from the spray port, suction pressure is kept in a maximum state. Therefore, air and contaminants are sucked effectively.