Gebläse und Klimaanlage

Details

Veröffentlichungs-Nr.

EP4737739

Anmeldetag

18. April 2025

Veröffentlichung

12. März 2026

Rechtsraum

EP

Abstract

An axial fan (30) includes a plurality of blades (33) configured to rotate about a predetermined axis (A1). Each blade has a leading edge portion (38) including a leading edge (36) and a porous portion (46) that is located behind the leading edge portion in a rotation direction (D1) and forms a positive pressure surface (40). In a blade cross section taken along a chord line (CLa) of the blade, the positive pressure surface of the leading edge portion has a raised portion (49) in which an absolute value of an angle formed by a tangent (TLa) to the positive pressure surface and the chord line decreases to zero with increasing distance from the leading edge toward a rear side in the rotation direction, and then increases to reach a change point (Pc) at which a rate of change of the absolute value starts to decrease.

Anmelder

Firma

Daikin Industries, Ltd.

Land

🇯🇵 Japan