Patent ID: 11873833
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 8:
9. The axial-flow fan of claim 7,
wherein the vane is shaped such that the second line chart in the second diagram includes at least one upward convex portion that is convex further upward than a second virtual line chart, the second virtual line chart being a linear line connecting a point representing a size of the inlet angle formed at a point of the leading edge that is at the inner circumferential edge and a point representing a size of the inlet angle formed at a point of the leading edge that is at the outer circumferential edge, and
wherein the leading edge includes a convex part forming the at least one upward convex portion and being located in the radial direction closer to the outer circumference of the vane than a part of the trailing edge where the minimal possible point is defined.