| 摘要 |
PROBLEM TO BE SOLVED: To solve such a problem in which a flow path from a scroll flow path outlet 801 to a heater inlet 802 becomes an expansion flow path, and flow velocity distribution of the heater inlet 802 becomes biased; therefore, it is necessary to uniformize the biased flow in a short distance of the expansion flow path part.SOLUTION: At least a first air flow direction plate and a second air flow direction plate are provided in a flow path from a scroll flow path outlet to a heater inlet. The first air flow direction plate is located on an impeller side from the second air flow direction plate, and also, the first air flow direction plate and the second air flow direction plate are located on a downstream side in a rotation direction from a line connecting a center of the impeller and a tongue part tip provided at the scroll flow path outlet. |
