I have an older air conditioner, a Sanyo "Rotary-Cool" and the freakin’ thing works pretty well, even today. All metal frame with a wood-grain grille tells me its gotta be 20 or more years old, no? I’m wondering what the "Rotary" is referring to. Was it a new technology at the time, or some special Sanyo trademarked type of compressor?
Gardner Denver Rotary Screw Air Compressor Manufacturer: GARDNER Model: EBERGC S/N: M39707 Condition: Good 117 CFM 30 HP Specifications: CFM 117 Motor 30 HP Voltage 230/3 Equipped With: Horizontal Tank www.centracorp.com www.centracorp.com www.centracorp.com
I decided to tear this pump down and demonstrate it before binning it, I’ve already done a few vids on rotary compressors before but theirs no harm in doing more detailed ones 
Its from a single phase 240V powered 7.1Kw split unit that was scrapped because of a bad compressor motor.(short to earth)
I was thinking about the reason why these rotary compressors have reed valves on the output when theoretically they shouldn’t be needed, and after a quick test with an air compressor, it’s quite apparent why: Without the valve, the high discharge pressure would turn the compressor into a motor, and would spin it up to high speed in reverse, potentially damaging the motor or compressor.
A rotary engine runs on compressed air. Part 2 of 2. See the first part at www.youtube.com See also www.engineair.com.au
Only if 2 compressors are running side by side a sound comparison is possible for the viewer. My invented totally oil-free axial piston compressor principle is not only much more silent as any conventional compressor, but also more powerful. Both is made possible by the water jacking system (both rotors running in water).
The Dremel 100 series rotary tool is a great choice for any hobbyist metalworker, woodworker or glassworker, as there are hundreds of attachments to accommodate any project. Use the Dremel 100 series tool and attachments as a beginner with advice from a jewelry maker and gemologist in this free video on tools. Expert: Chuck Koehler Contact: www.chuckkoehler.com/Services.htm Bio: Chuck Koeler is a bench jeweler and gemologist in Nashville, Tenn. Filmmaker: Dimitri LaBarge
This is an old rotary compressor from a large Panasonic window-box AC unit, I have sliced the housing length ways with a 4″ grinder and slitting wheel and dismantled it as far as i could to show you what it is made up of. One thing that sets these compressors aside from reciprocating (piston) units is that the outer housing is the “high” side of the HVAC system, unlike the reciprocating units where the housing receives the low temp gas from the evaporator and discharges High pressure, High Temperature gas through a tube, straight to the condenser.