Pack Rat Work Shop
BUZZ Generator Small Air motor/generator
Theory of operation: compressed air enters through sidewall of chamber and through the internal port of the piston itself to exit out the top into the expansion chamber.
The second pic is the magnetic field plot of the magnets in the piston that was created with a program called visimag.
There are many different ways the magnets and coils can be set up on this system. It could use coils withen iron laminations, straight coils as shown, etc…….
The bottom pic is an animated view so that the operation of the piston is clear.
Since I have been working on a design lately for a continuos run system that propane or freon/R134 for the pressure gas I decided to see if I could scale up the buzz-generator to something that would actually be capable of generating a decent amount of power. It’s the only thing I have been able to come up with so far that doesn’t use diaphrams and I’m not real comfortable using a scroll compressor in a design as I’ve never really have one to work with.
This is what I ended up with as an alternative. I call it the BIG-BUZZ. The electrical section should be capable of generating up to about 450 watts for battery charging on a 12v system. But I warn you now. It has to be solidly mounted down or it will dance all over the place during operation.
This is the complete side view – it’s a big picture!
This is a top down view of the center generating section
The next three links are full page size pics of the top, middle and bottom section that can be printed out and overlayed on one another for an easy to see large version.
After thinking about it for a bit I decided to see if I could come up with a simple system so the BIG BUZZ could drive external devices. There are a number of was to do this and the simplest is a mechanical seal on the shaft. This can also leak though so I went with the magnetic type of drive that is sealed.
Side view of the cables and how they are connected to the center drum
Another side view of the same setup
This is more conventional. It allows the shaft to still move straight back and forth while turning the crank disk with the pin and ball bearing.
All of these could use the same output