Patent
Centrifugal fan for blowing out air (versions)
Dzung Jang-Gie,Chung Moon Kee +1 more
TLDR
In this paper, the authors proposed air blowout centrifugal fan contains bell mouth installed in flush-mounted part of the fan into which air is sucked, and casing formed by curved plate which enclosed outer periphery of centrifugal fans and was made in form of archimeden curve to direct air getting out of spinning fan to discharge hole and which has angle of diverging of 5 - 6° at which plate widens outwards along spiral.Abstract:
FIELD: mechanical engineering. ^ SUBSTANCE: proposed air blowout centrifugal fan contains bell mouth installed in flush-mounted part of centrifugal fan into which air is sucked, and casing formed by curved plate which enclosed outer periphery of centrifugal fan and is made in form of Archimeden curve to direct air getting out of centrifugal fan to discharge hole and which has angle of diverging of 5 - 6° at which plate widens outwards along spiral. ^ EFFECT: enlarged operating capabilities. ^ 3 cl, 8 dwgread more
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Patent
Fan of ejector type with electrostatic filter
TL;DR: In this article, an electrostatic filter is installed in the channel of the nozzles to purify the air, which is tightened through an annular body forming a nozzle passage through which air is sucked from outside the fan by air exiting the air outlet.