Title:
GAS SENSOR
Document Type and Number:
WIPO Patent Application WO/2020/138031
Kind Code:
A1
Abstract:
The objective of the present invention is to measure gas concentration with a high degree of accuracy. A gas sensor (10) is provided with: a sensor enclosure (14); an ultrasonic transducer (30) provided at one end of the sensor enclosure (14); an ultrasonic wave reflecting surface (44) which is provided at the other end of the sensor enclosure (14) and which intersects an axial direction of the sensor enclosure (14); and a plurality of ventilation holes (16) provided in a side wall of the sensor enclosure (14). The plurality of ventilation holes (16) are provided in positions such that one side of the sensor enclosure (14) cannot be seen from the other side thereof when viewed from a side surface side of the sensor enclosure (14), and each ventilation hole (16) has a shape extending in the axial direction of the sensor enclosure (14).
Inventors:
SEO DAISUKE (JP)
TORIYAMA YASUHIRO (JP)
TORIYAMA YASUHIRO (JP)
Application Number:
PCT/JP2019/050506
Publication Date:
July 02, 2020
Filing Date:
December 24, 2019
Export Citation:
Assignee:
NISSHINBO HOLDINGS INC (JP)
JAPAN RADIO CO LTD (JP)
JAPAN RADIO UEDA CO LTD (JP)
JAPAN RADIO CO LTD (JP)
JAPAN RADIO UEDA CO LTD (JP)
International Classes:
G01N29/024; G01N29/22
Domestic Patent References:
| WO2006133738A1 | 2006-12-21 |
Foreign References:
| JP2002031621A | 2002-01-31 | |||
| JPH078764U | 1995-02-07 | |||
| JP2005265711A | 2005-09-29 | |||
| JP2006308401A | 2006-11-09 | |||
| JP2001526787A | 2001-12-18 |
Other References:
See also references of EP 3882624A4
Attorney, Agent or Firm:
YKI INTELLECTUAL PROPERTY ATTORNEYS (JP)
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