Air Bubble Sensor

Abstract

An air bubble sensor has a holder at which at least one ultrasonic sensor is arranged to detect air bubbles and/or gas bubbles in a flowing liquid, wherein a flow passage which has connection pieces is integrated into the holder.

What is claimed is: 
     
         1 . An air bubble sensor having a holder at which at least one ultrasonic sensor is arranged to detect air bubbles and/or gas bubbles in a flowing liquid, wherein a closed flow passage which has two connection pieces each for a respective tube is integrated into the holder; and wherein the flow passage has, at least sectionally, a substantially rectangular or square cross-section. 
     
     
         2 . An air bubble sensor in accordance with  claim 1 , wherein an ultrasonic sensor element is arranged at two sides of the flow passage viewed in cross-section. 
     
     
         3 . An air bubble sensor in accordance with  claim 1 , wherein the flow passage has, at least sectionally, two oppositely disposed wall sections which extend substantially parallel to one another. 
     
     
         4 . An air bubble sensor in accordance with  claim 1 , wherein the connection pieces are configured so that tubes having different inner diameters can be pushed onto them. 
     
     
         5 . An air bubble sensor in accordance with  claim 1 , wherein an electric plug connection for the ultrasonic sensor is arranged at the holder. 
     
     
         6 . An air bubble sensor in accordance with  claim 1 , wherein electric components for controlling the ultrasonic sensor are arranged at the holder. 
     
     
         7 . An air bubble sensor in accordance  claim 1 , wherein a plug receiver which in particular has a holding clamp for the air bubble sensor is provided for the air bubble sensor. 
     
     
         8 . An air bubble sensor in accordance with  claim 7 , wherein a cut-out is provided in the plug receiver and a plug connector of the air bubble sensor is arranged therein in a protected manner with a plugged-in air bubble sensor. 
     
     
         9 . An air bubble sensor in accordance with  claim 6 , wherein evaluation electronics for the air bubble sensor are provided in the plug receiver. 
     
     
         10 . An air bubble sensor in accordance with  claim 1 , wherein it has a circuit board which engages around the flow passage at two sides. 
     
     
         11 . An air bubble sensor in accordance  claim 1 , wherein it has the outer contour of a tube connector. 
     
     
         12 . An air bubble sensor in accordance with  claim 1 , wherein the holder is configured in one piece and in particular from a material permeable for ultrasound. 
     
     
         13 . An air bubble sensor in accordance with  claim 1 , wherein it is configured as a disposable part. 
     
     
         14 . An air bubble sensor in accordance with  claim 1 , wherein the flow passage extends in a straight line in the throughflow direction. 
     
     
         15 . An air bubble sensor having a holder at which at least one ultrasonic sensor is arranged to detect air bubbles and/or gas bubbles in a flowing liquid, wherein a closed flow passage which has two connection pieces each for a respective tube is integrated into the holder.