发明名称 |
PROPELLER FAN, BLOWER DEVICE, AND OUTDOOR EQUIPMENT |
摘要 |
A propeller fan, including: a boss; and a plurality of blades, each of the plurality of blades including a pressure surface and a suction surface, in which: when a connecting portion between the pressure surface and a side surface of the boss is defined as a pressure surface-side boundary portion, and a connecting portion between the suction surface and the side surface of the boss is defined as a suction surface-side boundary portion, a curvature of the suction surface-side boundary portion is smaller than a curvature of the pressure surface-side boundary portion; and as a blade area projected on a plane orthogonal to the rotation axis, a blade area of the suction surface is larger than a blade area of the pressure surface. |
申请公布号 |
US2016025101(A1) |
申请公布日期 |
2016.01.28 |
申请号 |
US201414776902 |
申请日期 |
2014.01.20 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
TADOKORO Takahide;KATO Yasuaki;KONO Atsushi |
分类号 |
F04D29/28;F04D25/08;F04D29/42;F04D17/08 |
主分类号 |
F04D29/28 |
代理机构 |
|
代理人 |
|
主权项 |
1. A propeller fan, comprising:
a boss provided so as to be rotatable about a rotation axis; and a plurality of blades formed along a side surface of the boss, each of the plurality of blades comprising a pressure surface and a suction surface, wherein: when a connecting portion between the pressure surface of the each of the blades and the side surface of the boss is defined as a pressure surface-side boundary portion, and a connecting portion between the suction surface of the each of the blades and the side surface of the boss is defined as a suction surface-side boundary portion, a curvature of the suction surface-side boundary portion is smaller than a curvature of the pressure surface-side boundary portion; and as a blade area projected on a plane orthogonal to the rotation axis, a blade area of the suction surface is larger than a blade area of the pressure surface. |
地址 |
Tokyo JP |