PROPELLER FAN AND AIR-CONDITIONING DEVICE OUTDOOR UNIT

A propeller fan includes a shaft part and a blade. The blade includes a basal part connected to the shaft part, a first part positioned either at the basal part or closer to an outer circumference of the propeller fan than is the basal part and away from the rotation axis by a distance r1, a second...

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Bibliographische Detailangaben
Hauptverfasser:	YAMAMOTO, Katsuyuki, KORENAGA, Kazunori, NAKASHIMA, Seiji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING HEATING LIGHTING MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT PUMPS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS WEAPONS
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Beschreibung
Zusammenfassung:	A propeller fan includes a shaft part and a blade. The blade includes a basal part connected to the shaft part, a first part positioned either at the basal part or closer to an outer circumference of the propeller fan than is the basal part and away from the rotation axis by a distance r1, a second part positioned away from the rotation axis by a distance r2 that is longer than r1, a third part positioned away from the rotation axis by a distance r3 that is longer than or equal to r2, and a tip part positioned at an outer circumferential end of the blade and away from the rotation axis by a distance rt that is longer than r3. A relationship expressed as (θ2 - θ1) / (r2 - r1) > (θt - θ3) / (rt - r3) ≥ 0 is satisfied, where θ1 denotes a warping angle of the blade in the first part, θ2 denotes a warping angle of the blade in the second part, θ3 denotes a warping angle of the blade in the third part, and θt denotes a warping angle of the blade in the tip part.