US 12,104,937 B2
Ultrasonic flowmeter
Yuuji Nakabayashi, Nara (JP); Masato Satou, Nara (JP); Asako Miyoshi, Kyoto (JP); and Masataka Matsuda, Kyoto (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 17/425,931
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Mar. 13, 2020, PCT No. PCT/JP2020/011115
§ 371(c)(1), (2) Date Jul. 26, 2021,
PCT Pub. No. WO2020/203183, PCT Pub. Date Oct. 8, 2020.
Claims priority of application No. 2019-065595 (JP), filed on Mar. 29, 2019.
Prior Publication US 2022/0170770 A1, Jun. 2, 2022
Int. Cl. G01F 1/66 (2022.01); G01F 1/667 (2022.01); G01K 13/02 (2021.01); G01F 15/02 (2006.01)
CPC G01F 1/662 (2013.01) [G01F 1/667 (2013.01); G01K 13/02 (2013.01); G01F 15/02 (2013.01)] 9 Claims
OG exemplary drawing
 
1. An ultrasonic flowmeter comprising:
a flow path body having a flow path where a fluid to be measured flows;
a pair of ultrasonic transducers disposed in the flow path body;
a substrate fixed to the flow path body;
a sensor plate where a temperature sensor for detecting a temperature of the fluid to be measured is disposed, the sensor plate being flat; and
an arithmetic unit that calculates a flow rate of the fluid to be measured from a propagation time of ultrasonic waves between the pair of ultrasonic transducers and the temperature detected by the temperature sensor, wherein
the flow path body has a sensor hole formed therein,
the flat sensor plate is inserted into the sensor hole so as to project into a flow path cross-section of the flow path, and
the temperature sensor is positioned at a substantially central portion in a rectangular cross-section of the flow path.