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Title:
圧電ポンプ
Document Type and Number:
Japanese Patent JP4911171
Kind Code:
B2
Abstract:
A piezoelectric pump comprises a pump body with a pump chamber and a piezoelectric element supported by the pump body so as to close the pump chamber and bent by voltage application so as to change the volume of the pump chamber. The piezoelectric element is of the bimorph type in which a plurality of piezoelectric layers is laminated. A diaphragm for separating the piezoelectric element from the pump chamber is bonded to a surface of the piezoelectric element adjacent to the pump chamber in face-to-face relationship. An inversion plane of the piezoelectric element alone, expansion/contraction directions of the piezoelectric element being inverted at the inversion plane, matches a neutral plane of the piezoelectric element and the diaphragm bonded to each other.

Inventors:
Atsuhiko Hirata
Shungo Kanai
Kamiyadake
Application Number:
JP2008524784A
Publication Date:
April 04, 2012
Filing Date:
July 09, 2007
Export Citation:
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Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
F04B43/04; F04B43/02; F04B45/04; F04B45/047
Domestic Patent References:
JPH0354383A1991-03-08
JPH0317184A1991-01-25
JPH08293632A1996-11-05
JP2006118397A2006-05-11
Attorney, Agent or Firm:
Hidetaka Tsutsui



 
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