Rotary Device, for Instance an Air Mover Such as a Fan, a Propeller or a Lifting Rotor, a Water Turbine or a Wind Turbine

摘要

A rotary device comprises a frame with a guide for flowing medium, a rotor with a number of blades, whereby a relation is obtained between the flowing medium and the rotation of the rotor, and energy converting means, the one part of which is connected to the frame and the other part to the rotor. The device has the feature that the end zones of the blades are connected to a ring, the ring has a radial section with the shape of an isosceles triangle or trapezium, the medium guide has an encircling recess, the form of which corresponds to the form of the ring and the ring fits with clearance into the recess, permanent magnets are added to the truncated conical surfaces, electromagnets debouch on both the corresponding surfaces of the recess, this such that the ring and the frame together form an annular induction motor or an electric generator.

主权项

1. Rotary device for converting one form of energy to another form of energy, which forms of energy are electrical energy and the energy of a flowing medium, the device comprising:
a frame with an inlet and an outlet and a rotation-symmetrical guide for the flowing medium extending between the inlet and the outlet; a rotor supported rotatably at least during operation by said frame and having a central hub and a number of blades which are connected to said hub in angularly equidistant arrangement and which extend at least more or less in radial direction, which blades all have a form such that a relation between the flowing medium and the rotation of the rotor is obtained; and energy converting means, the one part of which is connected fixedly to the frame and the other part is connected fixedly to the rotor; characterized in that the rotor comprises a concentric ring to which the end zones of the blades are connected; the ring has two equal truncated conical surfaces with mutually opposite orientations, has for instance a radial section with at least partially the general shape of an isosceles triangle or trapezium, the base of which extends parallel to the central axis, also the rotation axis, of the rotor and the sides of which converge outward; the medium guide has an encircling recess, the form of which corresponds to that of the ring such that the ring fits with clearance into the recess; permanent magnets are added to each of the truncated conical surfaces corresponding to said sides, which magnets are placed angularly equidistant and the poles of which debouch on said surfaces; the poles of the electromagnets, each with a core and a coil, equally placed equidistantly on the permanent magnets debouch on both the corresponding surfaces of the recess; this such that the ring with the permanent magnets and the frame with the electromagnets together form an annular induction motor or an electric generator; an electronic unit is added to the electromagnets which is configured to supply the electromagnets with alternating currents such that through the electromagnetic interaction between the electromagnets and the permanent magnets the rotor is driven rotatingly, or which is configured to convert the currents induced in the electromagnets by throughflowing medium during rotating drive of the rotor to a form of electric current suitable for a user, for instance for exporting back to the electricity grid; and the electronic unit is also configured to supply the electromagnets with alternating currents such that the rotor is suspended magnetically during operation.