초록 ▼

An improved vaneless fluid impeller of the friction type including a plurality of co-rotating axisymmetrical aligned spaced annular disks mounted for rotation about a common axis. Depending on whether a low kinematic viscosity or a high kinematic viscosity fluid is being utilized, the spacing betwee

An improved vaneless fluid impeller of the friction type including a plurality of co-rotating axisymmetrical aligned spaced annular disks mounted for rotation about a common axis. Depending on whether a low kinematic viscosity or a high kinematic viscosity fluid is being utilized, the spacing between adjacent side surfaces of the disks decreases with increasing radial distance from the axis of rotation or increases with increasing radial distance from the axis of rotation, respectively, to provide increased energy transfer efficiency. The impeller with variable inter-disk spacing may be used either for radial flow directed outwardly or radial flow directed inwardly.

대표청구항 ▼

In an apparatus for producing an accelerated fluid flow including a housing defining a fluid flow path and having a fluid inlet and a fluid outlet, a motor, and an impeller, said impeller having a hub coupled to said motor for rotation thereby and a plurality of axisymmetrical, coaxially spaced, ann

In an apparatus for producing an accelerated fluid flow including a housing defining a fluid flow path and having a fluid inlet and a fluid outlet, a motor, and an impeller, said impeller having a hub coupled to said motor for rotation thereby and a plurality of axisymmetrical, coaxially spaced, annular disks, fixedly mounted on said hub, and disposed in said fluid flow path with the interior openings of said plurality of disks forming a fluid inlet channel for the impeller, each of said disks having a pair of side surfaces for exerting shear and centrifugal forces on the fluid proximate said surfaces and flowing between said disks during rotation of said impeller; the improvement wherein: the fluid to be accelerated is a low kinematic viscosity fluid; said side surfaces are smooth; and the cross-sectional profiles of said disks are such that the spacing between facing ones of said side surfaces of adjacent disks decreases with increasing distance from the axis of rotation of said impeller so as to maintain the radial flow area between facing side surfaces substantially constant with increasing radial distance from said axis of rotation.