General > General Technical Chat
Hot air rework station pumps - food for thought ?
Fraser:
Wrapper,
Many thanks for showing the inside of the fan. I was wondering what it’s impeller looked like, but could not find any pictures.
That looks similar to the impeller that is used in vacuum cleaners ?
I will see what I can find out about that design. I have heard of “Nautilus” blowers (as in nautilus shell), maybe it is that design ?
Fraser
Fraser:
Ace1903,
You can use any source of pressurised gas to drive a hot air rework handpiece, provided the gas is inert and compatible with the application. The regulator could set the required flow but it would be an expensive solution to run. Conventional Air compressors are also useable if a suitable flow regulator and diffusion nozzle is used. In electronics it is just more convenient to use a relatively simple air compressor or blower. They can be relatively quiet if well designed.
Fraser
Fraser:
From initial checks, the Quick blower is actually a conventional centrifugal blower that is commonly found in vacuum cleaners
Interesting article on forward and backward curved impeller designs is here......
https://www.rs-online.com/designspark/fan-types-why-choose-a-forward-curved-centrifugal-fan
Fraser
Fraser:
Interesting YouTube video showing the building and testing of a blower with different styles of impeller. Nice build :-+
https://youtu.be/YuEaP9kyiFc
Fraser:
Another blower build by the same chap :-+ I love that he builds these units from wood rather than metal ;D
Nice trick for checking impeller balance with a marble as well :-+
https://youtube.com/playlist?list=RDCMUCckETVOT59aYw80B36aP9vw
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