发明授权
US5035359A Device for changing a direction of an airstream 失效
改变气流方向的装置

Device for changing a direction of an airstream
摘要:
A device for changing a direction of an airstream, which comprises a plurality of spaced airstream direction control plates arranged in parallel in a plane perpendicular to the direction of flow of the airstream. The airstream direction control plates are swung about corresponding swing axes positioned at the downstream ends of the airstream direction control plates, to change the direction of flow of the airstream.
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