ULTRASONIC BUBBLE DETECTOR AND ULTRASONIC BUBBLE DETECTION DEVICE USING THE SAME AND ARTIFICIAL DIALYZER

摘要

PROBLEM TO BE SOLVED: To provide an ultrasonic bubble detection device, ultrasonic bubble detector and artificial dialyzer where bubbles flow smoothly and that can perform correct bubble detection and stable bubble detection. ;SOLUTION: In the ultrasonic bubble detector 1, the vibrating sections of a pair of ultrasonic oscillation elements 2 facing each other, separated by a liquid transport pipe where a liquid flows, shape into a strip and detects bubbles passing through a liquid transport pipe. In that case, the longitudinal direction of the strip-shaped vibrating section 2-a is arranged perpendicularly to the direction of flow of a liquid in the liquid transport pipe, the length of the strip- shaped vibrating sections is larger than the width (inside diameter) of the inside of the liquid transport pipe in a pinched state, and the liquid transport pipe is pinched and held at the same surface (height) H as the surface where the portions other than the vibrating sections of the ultrasonic vibration elements contact the liquid transport pipe in the detector.;COPYRIGHT: (C)1999,JPO