Title:
電磁振動型ダイヤフラムポンプ及びそれを用いた燃料電池システム
Document Type and Number:
Japanese Patent JP6667078
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electromagnetic oscillation type diaphragm pump capable of preventing resonance at a drive frequency, and suppressing increase of noise.SOLUTION: The hardening of a viscoelastic material is set to 60 so that a natural frequency determined by a support load determined by a load of a pump body 7 and four pieces of first vibration bodies 15, and a spring rate of the first vibration body determined by its hardness and shape, is different from a drive frequency of the pump body 7 of 48 Hz. Consequently, the hardness of the first vibration body 15 is set to 60, so that the hardness can be properly set for the support load of the pump body 7 the first vibration body 15 supports, the natural frequency to be determined can be set so as to be deviated from a supply frequency, and then the natural frequency can be prevented from being resonant with the drive frequency in respective different systems, thereby suppressing noise due to resonance.SELECTED DRAWING: Figure 1
Inventors:
Takita Kida
Hirata Nyohaku
Hirata Nyohaku
Application Number:
JP2017021769A
Publication Date:
March 18, 2020
Filing Date:
February 09, 2017
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
F04B39/00; F04B45/047
Domestic Patent References:
| JP2002371968A | ||||
| JP2001234872A | ||||
| JP4298690A |
Attorney, Agent or Firm:
Kenji Kamada
Koichi Nomura
Koichi Nomura