THROUGH-FLOW FAN, AND INDOOR UNIT FOR AIR CONDITIONER

Title:

THROUGH-FLOW FAN, AND INDOOR UNIT FOR AIR CONDITIONER

Document Type and Number:

WIPO Patent Application WO/2012/086147

Kind Code:

A1

Abstract:

A blade impeller unit (14) has blades (13) arranged along the outer periphery of an annular support plate (12). Each of the blades (13) is divided into blade sections in the rotation axis direction (AX), and at least one of the blade sections which is a long chord blade section (20) is configured in such a manner that, in a cross-section thereof perpendicular to the rotation axis (17) of the blade (13), the length of the blade chord line (28a) of the long chord blade section (20), the blade chord line (28a) being the line segment connecting the blade's outer peripheral edge (20b) of the blade (13) and the blade's inner peripheral edge (20a) thereof, is configured to be greater than the length of the blade chord line (28b) of at least one of the remaining blade sections which is a short chord blade section (21). The blade's inner peripheral edge (20a) of the at least one long chord blade section (20) having the long blade cord line (28a) protrudes further toward the inner peripheral side than the blade's inner peripheral edge (21a) of the at least one short chord section (21) having the short blade chord line (28b).

Inventors:

TADOKORO TAKAHIDE (JP)
IKEDA TAKASHI (JP)
HAMADA SHINGO (JP)
SHIROTA MITSUHIRO (JP)

Application Number:

PCT/JP2011/006924

Publication Date:

June 28, 2012

Filing Date:

December 12, 2011

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
TADOKORO TAKAHIDE (JP)
IKEDA TAKASHI (JP)
HAMADA SHINGO (JP)
SHIROTA MITSUHIRO (JP)

International Classes:

F04D17/04; F24F1/00

Domestic Patent References:

WO2006035933A1	2006-04-06
WO2011036848A1	2011-03-31

Foreign References:

JP2006329099A	2006-12-07
JP2011099408A	2011-05-19
JP2011122522A	2011-06-23
JPH10252689A	1998-09-22

Other References: