Title:
CROSS FLOW FAN
Document Type and Number:
Japanese Patent JP2006170043
Kind Code:
A
Abstract:
To provide a cross flow fan which suppresses the deterioration of blowing performance and the occurrence of noise or the like caused by fluid vibration while reducing the occurrence of unusual noise shown by a product of the number of blades and operating rotational speed.
In a cross flow fan, two or more types of blades whose mounting angle and mounting pitch are constant and whose shapes are different are arranged at random. By so doing, the deterioration of blowing performance and the occurrence of noise or the like caused by fluid vibration are suppressed while reducing the occurrence of unusual noise (N*Z sound) shown by the product of the number (Z) of blades and operating rotational speed (N).
Inventors:
NAKAYAMA SEIEI
SAKAI KOICHI
NISHIZUKA TOSHIHARU
SAKAI KOICHI
NISHIZUKA TOSHIHARU
Application Number:
JP2004362632A
Publication Date:
June 29, 2006
Filing Date:
December 15, 2004
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
F04D17/04; F04D29/28; F04D29/30; F24F1/00
Domestic Patent References:
| JP2003214390A | 2003-07-30 | |||
| JPH1037893A | 1998-02-13 | |||
| JPH0814193A | 1996-01-16 | |||
| JPS62142894A | 1987-06-26 | |||
| JPS55164795A | 1980-12-22 | |||
| JP2003328980A | 2003-11-19 | |||
| JPH03194196A | 1991-08-23 | |||
| JP2004332588A | 2004-11-25 | |||
| JP2003184791A | 2003-07-03 |
Attorney, Agent or Firm:
Fumio Iwahashi
Tomoyasu Sakaguchi
Hiroki Naito
Tomoyasu Sakaguchi
Hiroki Naito
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