Title:
ULTRASONIC WAVE FLOW RATE SWITCH
Document Type and Number:
Japanese Patent JP2016217735
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an ultrasonic wave flow rate switch that can be stably attached to piping having various dimensions.SOLUTION: An ultrasonic wave is transmitted to a fluid body flowing in piping 2 by an ultrasonic wave element 710, and the ultrasonic wave from the fluid body flowing in the piping 2 is received by an ultrasonic wave element 720. On the basis of an output signal of at least one of the ultrasonic wave elements 710 and 720, a flow rate of the fluid body in the piping 2 is calculated. On the basis of the calculated flow rate and a threshold of a predetermined flow rate, ON/OFF signals are output. A casing part 500 integrally or individually holding the ultrasonic wave elements 710 and 720 is attached to an exterior face of the piping 2 by a clamp part 100. An acoustic couplant 610 formed of a soft elastic body is pressed against the exterior face of the piping 2 so that at least one of the ultrasonic wave elements 710 and 720 is acoustically coupled to the piping 2. An amount of crushing of the acoustic couplant 610 in a part having the greatest amount of crushing by the piping 2 is regulated by a crushing-amount regulation part.SELECTED DRAWING: Figure 2
Inventors:
KASHIMA HIROSHI
Application Number:
JP2015099221A
Publication Date:
December 22, 2016
Filing Date:
May 14, 2015
Export Citation:
Assignee:
KEYENCE CO LTD
International Classes:
G01F1/66; G01F1/00
Domestic Patent References:
| JP4614666B2 | 2011-01-19 | |||
| JPH08166277A | 1996-06-25 | |||
| JPS5568053U | 1980-05-10 | |||
| JP5690993B2 | 2015-04-01 | |||
| JPH0255123U | 1990-04-20 | |||
| JP6229431B2 | 2017-11-15 | |||
| JP5548846B2 | 2014-07-16 | |||
| JP4919702B2 | 2012-04-18 | |||
| JP5747251B2 | 2015-07-08 |
Foreign References:
| US8356523B2 | 2013-01-22 | |||
| US9505031B2 | 2016-11-29 |
Attorney, Agent or Firm:
Yoshito Fukushima
Sawamura Hideyuki
Sawamura Hideyuki