| 摘要 |
To provide an impeller of a multiblade fan capable of reducing noise and improving blowing performance and a multiblade fan having the same. An impeller ( 113 ) of a multiblade fan ( 110 ) includes a discoid main plate ( 131 ) that rotates about a rotational axis, plural blades ( 133 ), and a side plate ( 132 ). The plural blades ( 133 ) are disposed annularly about the rotational axis on one side of the main plate ( 131 ), with one end of each of the blades being fixed to an outer peripheral portion of the main plate ( 131 ). The side plate ( 132 ) includes an annular side plate body portion ( 132 a) that joins outer peripheral edges of the other ends of the plural blades ( 133 ) to each other, an axially extending portion ( 132 b) that extends from the opposite-main plate side end of the side plate body portion ( 132 a) further toward the opposite-main plate side in the rotational axis direction than the opposite-main plate side ends of the blades ( 133 ), and a radially extending portion ( 132 c) that extends from the outer peripheral end of the side plate body portion ( 132 a) further toward the outer peripheral side than the radial-direction outer peripheral end of the axially extending portion ( 132 b).
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