Title:
INDOOR UNIT FOR AIR CONDITIONING DEVICE
Document Type and Number:
WIPO Patent Application WO/2013/150569
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 facing the pressure surfaces curve in the impeller rotation direction, from the rotational axis of the impeller towards the outside of the blade; 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; at least either the pressure surfaces or the negative pressure surfaces are formed in multiple-arc curved surfaces formed using arcs having at least two different radii; one side is connected to the multiple-arc 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 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 towards the center, is greatest at a prescribed position in the vicinity of the center, gradually decreases towards the inside, and becomes substantially the same in the straight-line sections.
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Inventors:
IKEDA TAKASHI (JP)
TADOKORO TAKAHIDE (JP)
SHIROTA MITSUHIRO (JP)
HIRAKAWA SEIJI (JP)
YAMAGUCHI KOJI (JP)
TADOKORO TAKAHIDE (JP)
SHIROTA MITSUHIRO (JP)
HIRAKAWA SEIJI (JP)
YAMAGUCHI KOJI (JP)
Application Number:
PCT/JP2012/002418
Publication Date:
October 10, 2013
Filing Date:
April 06, 2012
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
IKEDA TAKASHI (JP)
TADOKORO TAKAHIDE (JP)
SHIROTA MITSUHIRO (JP)
HIRAKAWA SEIJI (JP)
YAMAGUCHI KOJI (JP)
IKEDA TAKASHI (JP)
TADOKORO TAKAHIDE (JP)
SHIROTA MITSUHIRO (JP)
HIRAKAWA SEIJI (JP)
YAMAGUCHI KOJI (JP)
International Classes:
F04D17/04; F24F1/00
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 |
Attorney, Agent or Firm:
KOBAYASHI, Hisao et al. (JP)
Hisao Kobayashi (JP)
Hisao Kobayashi (JP)
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