Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
FAN, MOLDING DIE, AND FLUID FEEDING DEVICE
Document Type and Number:
Japanese Patent JP2012013092
Kind Code:
A
Abstract:

To provide a fan exerting superior blowing capability, and to provide a molding die and a fluid feeding device.

A cross flow fan is provided, including a plurality of fan blades 21 each having an inner edge 27 and an outer edge 26. The fan blade 21 includes a vane surface 23 composed of a positive pressure surface 25 and a negative pressure surface 24, extending between the inner edge 27 and the outer edge 26. The fan blade 21 has a vane cross-sectional shape in which a thick portion having the largest thickness between the positive pressure surface 25 and the negative pressure surface 24 is arranged as deviating to the inner edge 27. A recessed portion 41 recessing from the positive pressure surface 25 is formed at a position closer to the inner edge 27 where the thick portion is arranged, than at the outer edge 26. The recessed portion 41 is extended from one end 31 to the other end 32 of the fan blade 21 in a direction along the rotation axis of the fan. The cross-sectional area of the fan blade 21 gradually increases from the one end 31 to the other end 32. The recessed portion 41 is formed in such a manner that the cross-sectional area of the recess is larger in the other end 32 than in the one end 31.


Inventors:
SHIRAICHI YUKISHIGE
OTSUKA MASAO
TAKAHASHI MASAYA
Application Number:
JP2011000230847
Publication Date:
January 19, 2012
Filing Date:
October 20, 2011
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHARP KK
International Classes:
F04D29/30; F04D17/04; F04D29/28
Domestic Patent References:
JP2007010259A2007-01-18
JPH074388A1995-01-10
JP2010106853A2010-05-13
Foreign References:
US5169290A1992-12-08
Attorney, Agent or Firm:
Fukami patent office