Fluid reaction surfaces (i.e. – impellers) – Rotor having flow confining or deflecting web – shroud or... – Radially extending web or end plate
Patent
1994-10-03
1996-09-24
Look, Edward K.
Fluid reaction surfaces (i.e., impellers)
Rotor having flow confining or deflecting web, shroud or...
Radially extending web or end plate
416241A, 416229R, F04D 2930
Patent
active
055584993
ABSTRACT:
According to this invention, there is provided a centrifugal blower wheel with backward curved comprising a disk, a shroud and a plurality of airfoil shaped blades. By separating the blades into "vane members" which assume the function of a fluid device and "vane attachment members" which assume the function of a rotating device, there is a greater degree of freedom of design, so optimum materials and shapes can be assigned to these different functions. The disk, the shroud and the vane attachment members are therefore constructed of metal and provided with beads so as to give a highly rigid structure, while the vane members are constructed of non-metal. This makes it possible to provide a blower wheel which is more lightweight and quieter in operation than a conventional blower wheel.
REFERENCES:
patent: 2054144 (1936-09-01), Swigert
patent: 3144204 (1964-08-01), Bohanon
patent: 3901625 (1975-08-01), Witzel
patent: 4231706 (1980-11-01), Ueda et al.
patent: 4253796 (1981-03-01), Philipps et al.
patent: 4957414 (1990-09-01), Willingham
patent: 5328332 (1994-07-01), Chiang
Look Edward K.
Sgantizos Mark
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