Push-pull type ventilation hood
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United States of America Patent
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Oct 26, 2010
Grant Date -
Jan 12, 2006
app pub date -
Jul 8, 2004
filing date -
Jul 8, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention is a push-pull ventilation hood having a push device to obtain a push air flow and a pull device to exhaust contaminant flow with an exhaust opening and the two devices properly coordinated with each other, wherein, when the push flow flows through a contaminant source, a contaminated flow of the push flow is exhausted through the exhaust opening. Based on the design process according to the present invention, a push-pull hood with the highest efficiency of push velocity can be designed and the push-pull hood can economically and effectively control the contaminant source.
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