Title:
CONTROL METHOD FOR FAN
Document Type and Number:
Japanese Patent JP2007187147
Kind Code:
A
Abstract:
To provide a control method for a fan preventing noise that is audible to a user.
The control method is for adjusting a rotational speed of the fan. The method includes adjusting the rotational speed of the fan within a range of rotational speed change from a first mode value, and adjusting the rotational speed change of the fan within the range of rotational speed change within a time. An upper limit of the range of rotational speed change is determined by adding a first change value to a second mode value, and a lower limit of the range of rotational speed change is determined by subtracting a second change value from the second mode value. By this, sound from the fan will not be recognized as noise by the user.
Inventors:
TIEN CHI-WEI
Application Number:
JP2006223161A
Publication Date:
July 26, 2007
Filing Date:
August 18, 2006
Export Citation:
Assignee:
COMPAL ELECTRONICS INC
International Classes:
F04D15/00; H02P29/00
Attorney, Agent or Firm:
Kosaku Sugimura
Shiro Fujitani
Kiyoshi Kuruma
Shiro Fujitani
Kiyoshi Kuruma
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