Looking forward to the Rollator restoration vids!
Repulsion Start / Induction Run Belt Drive Frigidaire!
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Rollator Restoration...
Actually; I have started on that one but got sidetracked before sharing it on this forum. Will make a new thread shortly!
Actually; I have started on that one but got sidetracked before sharing it on this forum. Will make a new thread shortly!
Rollator Compressors
About 12 or 15 years ago I was working for an older lady in NW Washington DC who asked me if I had ever heard of a Rollator compressor, she claimed that her Father had invented them.
To me the best rotary compressor was the Seeger design that came out of the St Paul Minnesota Seeger factory. Whirlpool acquired this compressor design when they bought Seeger refrigerator company in the mid 50s and continued to build these great compressors until about 1984.
It was a sad day when they quit building these WP-S rotary compressors, they were nearly silent in operation, did not vibrate at all like Frigidaire's RCs, they would restart instantly after being turned off and immediately back on and best of all they actually got more efficient with use and never wore out and lost compression like GEs piston compressors.
John L.
About 12 or 15 years ago I was working for an older lady in NW Washington DC who asked me if I had ever heard of a Rollator compressor, she claimed that her Father had invented them.
To me the best rotary compressor was the Seeger design that came out of the St Paul Minnesota Seeger factory. Whirlpool acquired this compressor design when they bought Seeger refrigerator company in the mid 50s and continued to build these great compressors until about 1984.
It was a sad day when they quit building these WP-S rotary compressors, they were nearly silent in operation, did not vibrate at all like Frigidaire's RCs, they would restart instantly after being turned off and immediately back on and best of all they actually got more efficient with use and never wore out and lost compression like GEs piston compressors.
John L.
Interesting history there John! According to the documents available online a man by the name of W.S.E. Roloff invented it and brought it to market in 1913.
The Whirlpool WP-S compressor was a 4-vane design, if I am thinking of the correct one. That would run very smoothly since it is a continuous compression cycle, and not working in a pulsating fashion like a recip or Rollator design.
By the way, I am rebuilding a Rollator in another thread....
The Whirlpool WP-S compressor was a 4-vane design, if I am thinking of the correct one. That would run very smoothly since it is a continuous compression cycle, and not working in a pulsating fashion like a recip or Rollator design.
By the way, I am rebuilding a Rollator in another thread....
Whirlpool Seeger Rotary Compressors
Hi David, these were actually two vane designs, the beauty of them was they were almost completely balanced so they ran very smoothly.
Unlike the Frigidaire design that had an out-of-balance rotor with a spring loaded van being pushed against the side of the rotor the WP-S design had a balanced rotor spinning in an eccentric housing with two vanes that stayed in contact with the housing with just the centrifugal force [ no springs ].
Most portable vacuum pumps that companies like Robinair sold in the 70s through the 80s had a WP rotary compressor in them because they worked so well and could easily pull the vacuum of 29.8" or more that insured that ALL water would boil out of the system.
John L.
Hi David, these were actually two vane designs, the beauty of them was they were almost completely balanced so they ran very smoothly.
Unlike the Frigidaire design that had an out-of-balance rotor with a spring loaded van being pushed against the side of the rotor the WP-S design had a balanced rotor spinning in an eccentric housing with two vanes that stayed in contact with the housing with just the centrifugal force [ no springs ].
Most portable vacuum pumps that companies like Robinair sold in the 70s through the 80s had a WP rotary compressor in them because they worked so well and could easily pull the vacuum of 29.8" or more that insured that ALL water would boil out of the system.
John L.
Hi John. Neat design. I have an Edwards High Vacuum pump using this principle. It is two-stage, with each stage being a two-vane rotor of the design you describe. In this one, the vanes are a carbon material.
