| 摘要 |
A dryer blower for carwash facilities comprising a volute housing for an impeller having an axial intake and a tangential air outlet. The volute housing is characterized by a spiral channel of increasing cross-sectional area as a result of an increasing width and substantially constant radial dimension. The spiral housing terminates in a long, narrow output to create an air knife which effectively strips water from the surfaces of a just washed vehicle. The housing can be asymmetric or symmetric and housings can be arranged in side by side tandem to create additional length in the air outlet.
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