Title:
ULTRASONIC SENSOR HEAD AND ULTRASONIC DETECTOR HAVING SAID ULTRASONIC SENSOR HEAD
Document Type and Number:
WIPO Patent Application WO/2018/051865
Kind Code:
A1
Abstract:
Provided are an ultrasonic sensor head and an ultrasonic detector having the ultrasonic sensor head, which have a high detection sensitivity and few false detections of air bubbles. The present invention pertains to a pair of ultrasonic sensor heads (1) that are disposed facing each other with a conduit (30), through which a liquid flows, interposed therebetween, and that can transceive ultrasonic waves. One (10) of the pair of ultrasonic sensor heads (1) is provided with a first oscillation surface (111) facing the conduit (30); and the other (20) of the pair of ultrasonic sensor heads (1) is provided with a second oscillation surface (211) facing the conduit (30). The width of the second oscillation surface (211) in the liquid flow direction is smaller than the width of the first oscillating surface (111), and one among the first oscillating surface (111) and the second oscillation surface (211) is used as an ultrasonic wave transmitting surface, and the other is used as an ultrasonic wave receiving surface.
Inventors:
OTSUKA KOJI (JP)
FUNABASHI YU (JP)
FUNABASHI YU (JP)
Application Number:
PCT/JP2017/032152
Publication Date:
March 22, 2018
Filing Date:
September 06, 2017
Export Citation:
Assignee:
JMS CO LTD (JP)
SAGINOMIYA SEISAKUSHO INC (JP)
SAGINOMIYA SEISAKUSHO INC (JP)
International Classes:
G01N29/032; G01N29/22; H04R17/10
Foreign References:
| JPH0471947U | 1992-06-25 | |||
| JPH03107756A | 1991-05-08 | |||
| JPH01198560A | 1989-08-10 | |||
| JP2003014703A | 2003-01-15 | |||
| JP2005084017A | 2005-03-31 | |||
| JP2004325350A | 2004-11-18 | |||
| US8091442B1 | 2012-01-10 |
Attorney, Agent or Firm:
KATO Ryuta et al. (JP)
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