You can get turbine style impellers where there are stator vanes in the housing around the outside of the impeller. They curve the opposite way to the blades on the impeller and expand towards the outside of the housing slowing the flow down thus increasing the flow pressure. Sorry no links just heard about it somewhere. I don't know if there are any pumps around with housings like this. They work a bit like the stator vanes in a gas turbine engine
Edit
just thought of an example. the vanes on the delta focused flow fans. just with a pump impellor the flow is coming from the centre (Radial not axial) so the vanes are around the outside of the impeller
Last edited by WAJ_UK; 12-02-2003 at 10:00 AM.
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