INDOOR UNIT FOR AIR CONDITIONING DEVICE - MITSUBISHI ELECTRIC CORP

Title:

INDOOR UNIT FOR AIR CONDITIONING DEVICE

Document Type and Number:

WIPO Patent Application WO/2013/150673

Kind Code:

A1

Abstract:

An indoor unit for an air conditioning device, in which blades of an impeller are shaped such that, when the blades are viewed in a vertical cross-section: pressure surfaces of the blades and negative pressure surfaces on the opposite side to the pressure surfaces curve in the impeller rotation direction, from the rotational axis of the impeller towards the outside of the blades; a bow shape is formed in which the vicinity of the center of the blades is furthest away from a straight line connecting the inside end section and the outside end section of the blades; the pressure surfaces and the negative pressure surfaces are formed in a curved surface formed using at least one arc; one side is connected to the curved surface; the other side extends to the inside end section side of the blades; the surfaces of the pressure surfaces or negative pressure surfaces that are formed in an arc have a continuous planar straight-line section; and when the diameter of the circle inscribing the pressure surfaces and the negative pressure surfaces is the blade thickness, the blade thickness at the outside end sections is less than at the inside end sections, gradually increases from the outside end sections, and becomes substantially the same in the straight-line sections.

Inventors:

IKEDA TAKASHI (JP)
TADOKORO TAKAHIDE (JP)
SHIROTA MITSUHIRO (JP)
HIRAKAWA SEIJI (JP)
YAMAGUCHI KOJI (JP)
UMETSU KOICHI (JP)

Application Number:

PCT/JP2012/075780

Publication Date:

October 10, 2013

Filing Date:

October 04, 2012

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)
IKEDA TAKASHI (JP)
TADOKORO TAKAHIDE (JP)
SHIROTA MITSUHIRO (JP)
HIRAKAWA SEIJI (JP)
YAMAGUCHI KOJI (JP)
UMETSU KOICHI (JP)

International Classes:

F24F1/00; F04D17/04

Foreign References:

JP2011122522A	2011-06-23
JP2001263285A	2001-09-26
JP2010236437A	2010-10-21
JP2009036138A	2009-02-19
JPS3817526B1
JP2003028089A	2003-01-29
JP2012007473A	2012-01-12
JP2001280288A	2001-10-10
JP2001323891A	2001-11-22
JPH0579492A	1993-03-30
JP3661579B2	2005-06-15
JP4896213B2	2012-03-14

Other References: