mrpi
Mechanical
- Jun 22, 2008
- 80
I had asked a question about experimentally determining heat transfer coefficients in a motor housing earlier and this is a related project. I need to provide cooling to a motor dissipating ~200+W (could be 2x that number, I'm not sure yet).
I had originally designed the motor housing with horizontal radial fins (like stacked dinner plates) and piped cooling air into opposite sides of the stack. We had had the fins machined, and the shop used a big t-slot type cutter to profile the slots between the fins. I had kept the fins to a minimum thickness to facilitate easier machining (stiffer fin to reduce chatter, etc).
In this new application with increased heat power, I feel that wire EDM can provide more ideal fin density and profile. So, I was thinking of having axial-radial fins (like fanning out pages of a book) so the wire EDM machine can cut everything from the 'top'.
This is used in an outdoor application in the presence of sand and dust etc. I'm looking for suggestions on how to get the cooling air into the 'top' of the fins and distributed evenly. It needs to be some sort of annular manifold, as the motor output is right in the middle... hmmmm...
Beat to fit, paint to match.
I had originally designed the motor housing with horizontal radial fins (like stacked dinner plates) and piped cooling air into opposite sides of the stack. We had had the fins machined, and the shop used a big t-slot type cutter to profile the slots between the fins. I had kept the fins to a minimum thickness to facilitate easier machining (stiffer fin to reduce chatter, etc).
In this new application with increased heat power, I feel that wire EDM can provide more ideal fin density and profile. So, I was thinking of having axial-radial fins (like fanning out pages of a book) so the wire EDM machine can cut everything from the 'top'.
This is used in an outdoor application in the presence of sand and dust etc. I'm looking for suggestions on how to get the cooling air into the 'top' of the fins and distributed evenly. It needs to be some sort of annular manifold, as the motor output is right in the middle... hmmmm...
Beat to fit, paint to match.
