Title:
BLOWER, AIR CONDITIONER, AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/234630
Kind Code:
A1
Abstract:
This blower comprises a cross flow fan having an impeller in which a plurality of blades are annularly arranged. When viewed from a cross-section perpendicular to the rotary axis of the cross flow fan, the blade has: a pressure surface having a concave shape on the rotation direction side; a suction surface having a convex shape on the counter-rotation direction side; an arc-shaped inner-peripheral-side end surface connecting the pressure surface and the suction surface on the inner peripheral side of the blade; and an arc-shaped outer-peripheral-side end surface connecting the pressure surface and the suction surface on the outer peripheral side of the blade. The outer-peripheral-side end surface is located to the rotation direction side relative to the inner-peripheral-side end surface. The pressure surface of the blade satisfies the relationship of (curvature of a pressure-side second curved surface)>(curvature of a pressure-side third curved surface)>(curvature of a pressure-side first curved surface). Lengths obtained when a pressure-side first range, pressure-side second range, and pressure-side third range of the pressure-surface-side blade surface of the blade are projected onto the chord line connecting the inner peripheral end and outer peripheral end of the blade, satisfy the relationship of (pressure-side third range length)>(pressure-side first range length)>(pressure-side second range length).
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| JP2715784 | CROSS FLOW FAN DEVICE |
Inventors:
KONO ATSUSHI (JP)
TERAMOTO TAKUYA (JP)
UGAJIN YUKI (JP)
YAMAGUCHI KOJI (JP)
YAMASHITA TETSUO (JP)
IKEDA TAKASHI (JP)
TERAMOTO TAKUYA (JP)
UGAJIN YUKI (JP)
YAMAGUCHI KOJI (JP)
YAMASHITA TETSUO (JP)
IKEDA TAKASHI (JP)
Application Number:
PCT/JP2021/017432
Publication Date:
November 10, 2022
Filing Date:
May 07, 2021
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04D17/04
Foreign References:
| JP2001263285A | 2001-09-26 | |||
| JPS5652599A | 1981-05-11 | |||
| JPS4911990U | 1974-01-31 | |||
| JP2001280288A | 2001-10-10 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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