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Patent Searching and Data


Title:
FLUID CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/151173
Kind Code:
A1
Abstract:
A fluid control device (101) is provided with a piezoelectric pump (10), a pressure container (12), an input unit, a drive control unit (30), and a drive circuit (20). The piezoelectric pump (10) is provided with a pump chamber (117) of which the volume fluctuates due to displacement of a piezoelectric element (11), and a valve chamber (120) that communicates with the pump chamber (117) and has a valve (130). The piezoelectric pump (10) also has a pump chamber opening through which the pump chamber (117) and the exterior of the pump chamber communicate, and a valve chamber opening through which the valve chamber and the exterior of the valve chamber communicate. The pressure container (12) communicates with the valve chamber (120). A mains voltage is inputted to the input unit by a power source. The drive control unit (30) generates and outputs a drive mains voltage through the mains voltage inputted by the input unit. The drive circuit (20) receives the drive mains voltage from the drive control unit (30) and drives the piezoelectric element (11). In accordance with the vibrating state of the valve (130), the drive control unit (30) adjusts the drive mains voltage or a drive current corresponding to the drive mains voltage.

Inventors:
TANAKA Nobuhira (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
OKAGUCHI Kenjiro (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2019/002665
Publication Date:
August 08, 2019
Filing Date:
January 28, 2019
Export Citation:
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Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
F04B43/04
Foreign References:
JP2007198165A2007-08-09
JP2009203822A2009-09-10
JP2016200067A2016-12-01
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (1-4-34, Noninbashi Chuo-ku, Osaka-sh, Osaka 11, 〒5400011, JP)
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