发明授权
- 专利标题: Vacuum cleaner having airflow recirculation path for cooling beater brush motor
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申请号: US09886961申请日: 2001-06-21
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公开(公告)号: US06581241B2公开(公告)日: 2003-06-24
- 发明人: David M. Shaver , Oleksiy P. Sergyeyenko , Murray D. Hunter
- 申请人: David M. Shaver , Oleksiy P. Sergyeyenko , Murray D. Hunter
- 主分类号: A47L900
- IPC分类号: A47L900
摘要:
A vacuum cleaner system incorporating a closed loop airflow recirculation path for cooling a beater brush motor. A portion of clean, exhaust airflow created by a fan is diverted away from an exhaust port of the housing and directed into a flow path running alongside a portion of the housing. The airflow is used to pressurize a compartment within which a beater brush motor is disposed. A low pressure area created by the fan is used to assist in drawing the cooling exhaust airflow through the compartment, to thus form a closed loop cooling air recirculation system using only clean, filtered exhaust airflow to maintain the beater brush motor cool during use.
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