发明授权
- 专利标题: Electronic device having a blower with noise control
- 专利标题(中): 电子设备具有带噪音控制的鼓风机
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申请号: US12026822申请日: 2008-02-06
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公开(公告)号: US07925028B2公开(公告)日: 2011-04-12
- 发明人: Nobuhiro Yokoyama , Takashi Chikusa , Masao Iwakura
- 申请人: Nobuhiro Yokoyama , Takashi Chikusa , Masao Iwakura
- 申请人地址: JP Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Brundidge & Stanger, P.C.
- 优先权: JP2007-296506 20071115
- 主分类号: G10K11/16
- IPC分类号: G10K11/16 ; F24F13/24 ; F04D29/66 ; F01D25/04
摘要:
An electronic device having a first motor which rotates a rotating body (for example, blades) about a rotation axis and a second motor which vibrates a vibrator including the rotating body in the axial direction is provided. A control IC unit has a first circuit which subjects the rotation to control drive by a first waveform, and a second circuit which subjects the vibration to control drive by a second waveform. Rotation and vibration of a rotating and vibrating unit driven by the first and second motors generates an airflow and output sound by a synthesized output of a first output corresponding to the rotation and a second output corresponding to the vibration. The control IC unit generates a second waveform by using a reversed-phase waveform with respect to the first waveform or the like and suppresses the output sound by control of the first and second waveforms.
公开/授权文献
- US20090129936A1 ELECTRONIC DEVICE HAVING BLOWER 公开/授权日:2009-05-21
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