On Wednesday, August 18, 2010 01:05:31 pm Kirk Wallace did opine:
> I have been working on a furnace fan with a four speed AC induction
> motor. It came to mind that a four speed motor might be handy as a
> spindle motor, but when I powered the motor up on the bench, with no
> load, the four speeds seemed to be the same. My guess is that the
> different "speeds" are actually different slip/load rates. Is this
> correct? If so these motors would be useless as a multi-speed spindle
> motor.
>
> In my fan research, I found a new(er) fan motor technology using a
> brushless DC motor with a built in speed controller. It looks like these
> motors might be handy for something, but they may not be cheaply
> available until their host furnaces start giving out. Has anyone had any
> experience with these motors?
>
> http://www.mnpower.com/powerofone/one_home/hvac/furnace/index.htm
It appears they are not interested in anyone trying to retrofit an existing
HE furnace/CAC with one of them. And that is a shame. So I suspect they
are not the OEM of that motor. I haven't googled yet, but one of the hits
if the search term is worded right, might be the OEM for that motor.
I understand that Bosch is making a multipole stepper motor that is being
used in top of the line washing machines, driving both the agitation cycle
and the spin cycle by direct drive to the tub in its HE front loaders. Has
anyone attempted to use one of those for anything but an axis drive?
--
Cheers, Gene
"There are four boxes to be used in defense of liberty:
soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Piece of cake!
-- G.S. Koblas
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