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Title:
BLOWING DEVICE AND AIR CONDITIONER
Document Type and Number:
Japanese Patent JP2006097502
Kind Code:
A
Abstract:

To improve suction distribution at scroll intake openings of scroll casings in a blowing device and an air conditioner with a centrifugal blower comprising impellers and the scroll casing and disposed in a unit casing having a unit intake opening.

The air conditioner 1 comprises the centrifugal blower 3 and the unit casing 2 storing the centrifugal blower 3. The centrifugal blower 3 includes the impellers 31a-31d and the scroll casings 32a-32d storing the respective impellers 31a-31d. The unit casing 2 has the unit intake opening 2a opened in a direction intersecting with opening directions of the scroll openings 34a-34d. Swelling parts 61a-61d with inner surfaces having a shape uniform in circumferential directions and with portions of outer surfaces remote from the unit intake opening 2a having a shape swelling on opposite sides to the impellers are formed on peripheries of the scroll intake openings 34a-34d of the scroll casings 32a-32d.


Inventors:
HIGASHIDA TADASHI
Application Number:
JP2004282405A
Publication Date:
April 13, 2006
Filing Date:
September 28, 2004
Export Citation:
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Assignee:
DAIKIN IND LTD
International Classes:
F04D29/44; F24F1/0083; F24F13/08
Domestic Patent References:
JPS63118397A1988-05-23
JP3303860B22002-07-22
JP2003056496A2003-02-26
JPH04269399A1992-09-25
Attorney, Agent or Firm:
Yukio Ono
Hidetada Kato