Patent ID: 11920608
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 5:
6. The axial fan of claim 1, wherein in a case in which radially, a distance between the rotation shaft and a position of a portion of the projection portion close to an inner periphery is defined as a distance Ri, a distance between the rotation shaft and a position of a portion of the projection portion close to an outer periphery is defined as a distance Ro, a radius of the hub centered at the rotation shaft is defined as a distance Rb, and a distance between the rotation shaft and an outermost peripheral position of the outer periphery edge portion is defined as a distance R, the projection portion satisfies Distance Ri<Distance Ro<Distance R and Distance Rb<Distance Ri<Distance 0.5R and radially extends.