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Thread: Table saw motor problemthmi
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16th May 2017, 04:12 PM #16SENIOR MEMBER
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I would be very interested to learn how effective the air inlet port idea has proven to be. BTW, I did not present the idea as original to all, only to me.
The Benoulli effect is not intended to drag more air through the blade table slot. If I can induce a cylindrical stream of high velocity air across the cabinet, its inherent low pressure will hopefully scour the surrounding dust laden air into the outlet. The two key factors are airspeed and volume. I would use flat or circular blades on the inlet side to induce as much laminar flow into the incoming stream and probably look at some internal mods to reduce the internal volume of the cabinet.
The scientific principle is sound. It just needs some experimentation. It only took James Dyson five years and several thousand prototypes to perfect his idea, I might add.
mick
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16th May 2017 04:12 PM # ADSGoogle Adsense Advertisement
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16th May 2017, 04:26 PM #17SENIOR MEMBER
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Am no subject expert, but Dyson vacuum cleaners (and vacuums) rely on high velocity air, which is great for sucking objects that a relatively close to the inlet (1-2cm). The benefits of this greatly diminishes the further away the object is.
Dust extractors are all about volume of air moved rather than velocity. I'd be interested in the energy required (or extent of modifications) to create the same effect as a dyson in a cabinet.
I suspect by the time you create something that close to the blade it might hinder some of the saws functions ie raising/lowering of blade etc.
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16th May 2017, 05:07 PM #18SENIOR MEMBER
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16th May 2017, 05:42 PM #19.
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Sure, I was just commenting on what has been going on in the forum.
The Benoulli effect is not intended to drag more air through the blade table slot. If I can induce a cylindrical stream of high velocity air across the cabinet, its inherent low pressure will hopefully scour the surrounding dust laden air into the outlet. The two key factors are airspeed and volume. I would use flat or circular blades on the inlet side to induce as much laminar flow into the incoming stream
and probably look at some internal mods to reduce the internal volume of the cabinet.
After getting sufficient air into the cabinet the next most important thing is getting the air out. This is where a Bell Mouth hood (BMH) comes into its own.
Head over to the dust forum to see what these things do.
It only took James Dyson five years and several thousand prototypes to perfect his idea, I might add.
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