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PROPELLER FAN

  • US 20190316599A1
  • Filed: 12/08/2017
  • Published: 10/17/2019
  • Est. Priority Date: 12/28/2016
  • Status: Active Grant
First Claim
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1. A propeller fan, comprising a hub formed into a cylindrical shape, and a plurality of blades extending outwardly from a side surface of the hub, whereineach of the blades is configured such thata distance from a chord line to a mean line in a blade cross section is set as a camber, that in the blade cross section,a position on the chord line where the camber becomes maximum is set as a maximum camber position, thata ratio of a distance between a leading edge and the maximum camber position in the blade cross section to a chord length is set as a maximum camber position ratio, thatan end portion at the hub side of the blade is set as a blade root, thatan end portion of an outer circumferential side of the blade is set as a blade end, and thatthe maximum camber position ratio at the blade end is larger than the maximum camber position ratio at the blade root.

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