Invention Grant
US07695355B2 Integrated housing for fan and alternate flow check valve 有权
风扇和交流止回阀的集成外壳

Integrated housing for fan and alternate flow check valve
Abstract:
A single housing is utilized to mount both an internal fan, and an external alternate flow passage closed by a check valve. The alternate flow passage is defined between an inner and outer wall of the single housing, while the fan is mounted within the inner wall.
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