Quote:
Originally Posted by danny zubot
I can see how these designs would create bubbles. I think the size of bubbles could be adjusted by using a larger sized air line. (#3 above) This would make larger bubbles and thus rise out of the water faster.
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Here's some info from Delbeek in RA3
First he talks about extending the air line (8) down so it ended just above the inlet to the main siphon.
"Solving bubble generation
To solve this problem the air evacuation line (3) was moved into the CSD and placed at the very top of the inside elbow (8) instead of near the bottom of the outlet pipe in the tank. This should be the point where suction is the greatest and introducing air at this point, should cause the siphon to break rapidly. Another mod was to cut the end of the siphon pipe (2) with two 45 degree angles to look like an arrowhead. A side benefit has been a significant decrease in noise due to elimination of slurping at the end of the cycle."
Hope this helps.