Title:
CROSS FLOW FAN, BLOWING DEVICE, AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/223383
Kind Code:
A1
Abstract:
Provided is a cross flow fan that can suppress an increase in ventilation resistance between blades of an impeller. For this purpose, a cross flow fan (100) comprises: a plurality of support members (120) that are disposed at a preset interval in a rotational axis direction, and that have a circular or annular plate shape; and a plurality of blades (130) that are provided between the support members (120) adjacent to each other, and that are disposed closer to the outer circumference of the support members (120) and spaced apart from each other in a circumferential direction. Each of the blades (130) has a positive pressure surface (131) on a rotational direction side and a negative pressure surface (132) on an anti-rotational direction side. The plurality of blades (130) include at least one first blade (201). The positive pressure surface (131) of the first blade (201) has, in a cross section thereof perpendicular to a rotational axis (140), a protruding shape on the anti-rotational direction side in a first area (301) including an outer circumferential end (133) of the first blade (201), and has a protruding shape on the rotational direction side in a second area (302) including an inner circumferential end (134) of the first blade (201).
Inventors:
KONO ATSUSHI (JP)
TERAMOTO TAKUYA (JP)
ADACHI NAHO (JP)
TERAMOTO TAKUYA (JP)
ADACHI NAHO (JP)
Application Number:
PCT/JP2022/020363
Publication Date:
November 23, 2023
Filing Date:
May 16, 2022
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
F04D17/04
Foreign References:
| CN112160937A | 2021-01-01 | |||
| JPH0479991U | 1992-07-13 |
Attorney, Agent or Firm:
TAKADA, TAKAHASHI & PARTNERS (JP)
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