Title:
PUMP DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/217934
Kind Code:
A1
Abstract:
A pump device comprising a first piezoelectric pump, a second piezoelectric pump connected in series to the first piezoelectric pump on the downstream side of the first piezoelectric pump, a drive unit that supplies AC power as the input power for the first piezoelectric pump and the second piezoelectric pump, a control unit that controls the power input to the first piezoelectric pump and the second piezoelectric pump, and a power supply unit that supplies power to the drive unit. The control unit makes the power input to the second piezoelectric pump greater than the power input to the first piezoelectric pump.
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Inventors:
OKAGUCHI KENJIRO (JP)
Application Number:
PCT/JP2020/015392
Publication Date:
October 29, 2020
Filing Date:
April 03, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
F04B45/047; F04B43/04
Domestic Patent References:
| WO2017135206A1 | 2017-08-10 |
Foreign References:
| JP2012047172A | 2012-03-08 | |||
| JP2004169706A | 2004-06-17 | |||
| JPH07301182A | 1995-11-14 | |||
| JPS63297779A | 1988-12-05 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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