Title:
油劣化センサ
Document Type and Number:
Japanese Patent JP6902247
Kind Code:
B2
Abstract:
To provide an oil degradation sensor with which it is possible to measure degradation of oil in various situations.SOLUTION: An oil degradation sensor comprises: a supply board in which a supply passage for supplying oil is formed; a measuring chip provided in a space communicating with the supply passage, in which dual spiral shapes are formed, with a magnet provided on one of the dual spiral shapes, and which includes a penetration part whose vibration characteristics change in accordance with viscosity of the oil passing through a groove; a discharge board, arranged at a side of the measuring chip that is opposite to the supply board, for discharging the oil having passed through the measuring chip; and a dielectric constant detection unit that includes a pair of electrodes formed into spiral shapes and a calculation unit for applying a current to the electrodes and calculating a dielectric constant of the oil.SELECTED DRAWING: Figure 10
Inventors:
Akihiko Yano
Yasuyuki Yamamoto
Yuya Kano
Sohei Matsumoto
Yasuyuki Yamamoto
Yuya Kano
Sohei Matsumoto
Application Number:
JP2017211030A
Publication Date:
July 14, 2021
Filing Date:
October 31, 2017
Export Citation:
Assignee:
MITSUBISHI HEAVY INDUSTRIES,LTD.
National Institute of Advanced Industrial Science and Technology
National Institute of Advanced Industrial Science and Technology
International Classes:
G01N27/00; G01N11/16; G01N27/22
Domestic Patent References:
| JP2006522918A | ||||
| JP2004219326A | ||||
| JP2009058340A | ||||
| JP11502304A |
Foreign References:
| DE19644290A1 |
Other References:
山本泰之他1名,MEMS技術を用いた超小型粘度センサー,計測と制御,2015年,54巻5号,pp.351-355
Attorney, Agent or Firm:
Sakai International Patent Office