Rotary kinetic fluid motors or pumps – Working fluid passage or distributing means associated with...
Patent
1981-09-10
1983-11-08
Hornsby, Harvey C.
Rotary kinetic fluid motors or pumps
Working fluid passage or distributing means associated with...
123 4149, F00I 102, F01P 710
Patent
active
044139470
ABSTRACT:
A fan arrangement has a rotatable fan, a plurality of blades formed on the fan, and a shroud. The blades extend radially and are spaced circumferentially. The blades also extend perpendicularly to the radial direction. The base angle of each blade is set at a value of 55.degree. to 75.degree.. The shroud is located on the periphery of the fan so as to cover a part of the fan in such a manner that the fan is partially exposed at its downstream part and a clearance is formed therebetween. The covering percentage of the shroud relative to the fan is set at a value of 50% to 90%. The covering percentage is defined as 100.multidot.L.sub.2 /L.sub.1, where L.sub.1 is the axial width of the outer edge of each blade and L.sub.2 is the axial distance of the shroud from the downstream end thereof to a point in the same axial position as the upstream end of the outer edge of each blade.
REFERENCES:
patent: 1068097 (1913-07-01), Benjamin
patent: 2130910 (1935-02-01), Smith
patent: 3169694 (1963-04-01), Borchers
patent: 3727593 (1973-04-01), Enke
patent: 3937189 (1976-02-01), Beck
patent: 4062401 (1977-12-01), Rudny et al.
patent: 4189281 (1980-02-01), Katagiri et al.
Bian Shewen
Hornsby Harvey C.
Nissan Motor Company Limited
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