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Patent Searching and Data


Title:
AIR BLOWING DEVICE
Document Type and Number:
Japanese Patent JP2012013090
Kind Code:
A
Abstract:

To reduce air blast noise that is estimated to be caused by the interference of air flowing along a hub and air flowing out of an opening, in an air blowing device.

The air blowing device 10 is a sirocco fan in which a fan rotor 20 is constituted of the hub 25, a main plate 29 and a plurality of blades 26. In the air blowing device 10, the opening 24a is formed at the lower part (anti-suction side) of a motor cover 24. The opening 24a is formed so as to be brought into a range of 0 to 45% of a height dimension of the fan rotor 20 with the end, based on an end 28 of the anti-suction side of the fan rotor 20. By this arrangement, the air flowing to the blow-out side from the suction side of the fan rotor 20 and the air flowing out of the opening 24a are prevented from being interfered with each other, thus estimating the reduction of the noise.


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Inventors:
ISHII SHINJI
NAGAO MITSUHISA
Application Number:
JP2011000188551
Publication Date:
January 19, 2012
Filing Date:
August 31, 2011
Export Citation:
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Assignee:
DAIKIN IND LTD
International Classes:
F04D29/58; F04D29/28; F04D29/66
Domestic Patent References:
JPS5683697U1981-07-06
JPH06294399A1994-10-21
JP2010133309A2010-06-17
JP2001115997A2001-04-27
JP2006266194A2006-10-05
JP2007092571A2007-04-12
JPS53160606U1978-12-15
JPS55137285U1980-09-30
JP2004108184A2004-04-08
JPH06294399A1994-10-21
JPS5683697U1981-07-06
JPS5654994A1981-05-15
JPH10309069A1998-11-17
Attorney, Agent or Firm:
新樹グローバル・アイピー特許業務法人