[TheForge] Fwd: fridge compressor? GONE OT A BIT... :)
[email protected]
[email protected]
Wed Nov 26 13:47:01 2003
I think it sucks!!!!
Sorry............
Ray
Cincinnati
>
> From: Andy Vida <[email protected]>
> Date: 2003/11/26 Wed PM 12:57:30 EST
> To: [email protected]
> Subject: Re: [TheForge] Fwd: fridge compressor? GONE OT A BIT... :)
>
>
>
> "David E. Smucker" wrote:
> >
> > While I think that most fridge compressors are too small to supply much air
> > for many shop uses -- they do make very good vacuum pumps. Very useful for
> > "woodworkers" using vacuum bags for clamping veneer etc. Never know what a
> > blacksmith my want to use vacuum for. Now Air Conditioning compressors
> > could be of a much larger size. Still you don't find many scrap AC
> > compressors -- while there always seems to be a lot of scrap fridge
> > compressors.
>
> A few years ago I bought up the tool collection from a guy
> named Bill Miller. Bill was a very cool gentleman (his
> wife Sylvia was also a sweetheart) that used to work for
> RCA as an engineer. One of the things I got from him was
> a backer pump that RCA Switzerland no longer needed, which
> he had taken home with him many years ago. Backer pumps
> are used in the inital evacuation of prototype TV tubes.
> Super high vacuum was attainable, but there was an even
> higher vacuum pump he gave me that had no moving parts.
> I never used it, but I think he called it an "oil immersion
> pump". It is attached to the tube along with the backer.
> When the backer goes as far as it can, then the immersion
> pump, which is filled with heated oil, is allowed to
> cool. According to Bill, the vacuum is so high that
> they can literally count the free atoms left in the tube
> and that it's a pretty low number. I always thought
> that was so cool.
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