Axial fan
US12104604B2 · kind B2 · utility
0Cited by
5References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2023 |
| Grant date | Oct 1, 2024 |
| Priority date | — |
| Expiry date | Sep 28, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF04D29/384
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Provided is an axial fan including a plurality of blades configured to produce an air current flowing from an inlet side to an outlet side, in which: the blade includes a curved portion rising toward the inlet side along an outer peripheral edge of the blade; a starting position of the curved portion delineates a convex curve protruding radially outward on the blade as viewed from the inlet side; and letting a total length of the convex curve be X, a length Y from an end of the convex curve on a front edge of the blade to a vertex of the convex curve satisfies a relationship of 0<Y≤0.6X as viewed from the inlet side.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.