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1. (WO2018124257) AXIAL FLOW FAN AND BLOWER UNIT

Pub. No.:    WO/2018/124257    International Application No.:    PCT/JP2017/047151
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Fri Dec 29 00:59:59 CET 2017
IPC: F04D 29/38
Applicants: DAIKIN INDUSTRIES, LTD.
ダイキン工業株式会社
Inventors: IWATA Tooru
岩田 透
Title: AXIAL FLOW FAN AND BLOWER UNIT
Abstract:
Rotor blades (22) are each provided with a bulging section (23) bulging from a pressure surface side to a negative pressure surface side of the rotor blade (22). In a radial direction cross-section of a rotor blade (22), the bulging section (23) bulges more to the negative pressure surface side of the rotor blade (22) than a virtual line (Li) connecting the inner peripheral edge and the outer peripheral edge of the rotor blade (22), and extends from the front edge to the back edge of the rotor blade (22) such that a ridge line (L23) thereof is positioned further outward in the radial direction than a virtual arc (Lc) passing through the center between the inner peripheral edge and the outer peripheral edge of the rotor blade (22) in a plan view.