ondablade
05-11-2011, 06:28 AM
Hi guys, I'm finally installing my system. I'm not too sure how much action there is around here these days, but here goes.
My Clear Vue has the OEM blower and 16in impeller, but a locally fabricated galvanised steel cyclone. It'll be powered by a 230V 3 phase 4kW Euro motor with a VFD to give 3,450 rpm and the ability to tune out rpm related noise/resonances etc if needed - and reduced start up current on our local 50Hz/62A power supply.
While mounting the blower inlet tube in the ply ring at the top of the cyclone it struck me that there might be some advantage to allowing the tube to project some distance inside the blower housing. i.e. to extend it coser to the impeller so that (a) the incoming air is directed into the centre of and through the impeller, and (b) so that it creates some sort of separation between the low pressure area at the centre, and the higher pressure out near the vane tips.
I'm thinking it could aid both performance and noise reduction.
There may in practice be no problem with air mixing between the high and low pressure zones inside the housing, but you never know - it has quite a lot of dead space.
Has anybody tried anything like this? What do the commercial fan makers do in this regard?
ian
My Clear Vue has the OEM blower and 16in impeller, but a locally fabricated galvanised steel cyclone. It'll be powered by a 230V 3 phase 4kW Euro motor with a VFD to give 3,450 rpm and the ability to tune out rpm related noise/resonances etc if needed - and reduced start up current on our local 50Hz/62A power supply.
While mounting the blower inlet tube in the ply ring at the top of the cyclone it struck me that there might be some advantage to allowing the tube to project some distance inside the blower housing. i.e. to extend it coser to the impeller so that (a) the incoming air is directed into the centre of and through the impeller, and (b) so that it creates some sort of separation between the low pressure area at the centre, and the higher pressure out near the vane tips.
I'm thinking it could aid both performance and noise reduction.
There may in practice be no problem with air mixing between the high and low pressure zones inside the housing, but you never know - it has quite a lot of dead space.
Has anybody tried anything like this? What do the commercial fan makers do in this regard?
ian