Ventilator
OwnerMichel Zaniewskiinventor
Life of this patent
Estimating the term…
Abstract
A ventilator comprising a rotating plate provided on its lower surface with blades forming a centrifugal turbine surmounting the mouth of a ventilation duct or ducts in whose axis said turbine creates an ascending vortex effect. The aspiration to which the main duct or ducts are subjected is obtained by the rotation of a turbine (4a) comprising a flange (4) and a plurality of blades (10) fastened to lower surface of flange (4). The blades have a trough shape facing away from the direction of rotation of the turbine, the blades having an inner edge that makes an angle of less than 90 degrees with the flange.
Claims21
A ventilator for use in combination with a conduit having an upwardly open mouth of predetermined shape and flow cross section, said ventilator comprising:
- a horizontal deflector disk suspended above said mouth, said disk having an outer periphery extending outwardly beyond said mouth and defining with said mouth an annular gap having a flow cross section greater than that of said mouth,
- a drive motor fixed above said disk for rotating said disk about an upright axis,
- a plurality of blades mounted on a upper surface of said disk and extending inwardly of the outer periphery of said disk,
- a plurality of trough-shaped blades mounted on a lower surface of said disk, said blades having an inner edge that makes an angle of less than 90 degrees with said disk, and,
- a sleeve surrounding said disk and centered on said axis, said blades generating an air stream that moves downwardly through said sleeve, around said periphery of said disk and across said gap for inducing air flow over said body and thereby creating a low-pressure zone at said mouth.
A ventilator comprising a rotating plate provided on its lower surface with blades forming a centrifugal turbine surmounting the mouth of a ventilation duct or ducts in whose axis said turbine creates an ascending vortex effect, characterized in that a forced aspiration to which the main duct of ducts are subjected is obtained by the rotation of a turbine (4a) comprising a plurality of blades (10) fastened to a lower surface of said plate (4), said blades having a trough shape facing away from the direction of rotation of the turbine and an inner edge that makes an angle of less than 90 degrees with said plate.
A ventilator for use in combination with a conduit having an upwardly open mouth of predetermined shape and flow cross section, said ventilator comprising:
- a horizontal deflector disk suspended above said mouth, said disk having an outer periphery extending outwardly beyond said mouth and defining with said mouth an annular gap having a flow cross section greater than that of said mouth,
- a drive motor fixed above said disk for rotating said disk about an upright axis,
- a plurality of blades mounted on an upper surface of said disk and extending inwardly of the outer periphery of said disk,
- a plurality of trough-shaped blades mounted on a lower surface of said disk, said blades having an inner edge that makes an angle of less than 90 degrees with said flange,
- a sleeve surrounding said disk and centered on said axis,
- said blades generating an air stream that moves downwardly around said periphery of said disk and across said gap for inducing air flow over said body and thereby creating a low-pressure zone at said mouth, and
- means for adjusting the distance between the open mouth of the conduit and the trough-shaped blades to regulate the aspiration that the latter creates inside said conduit.
A ventilator comprising:
- a rotating plate,
- a plurality of blades mounted on a lower surface of said plate, forming a centrifugal turbine surmounting the mouth of a ventilation duct of ducts in whose axis said turbine creates an ascending vortex effect, said blades having a trough shape facing away from the direction of rotation of the turbine and an inner edge that makes an angle of less than 90 degrees with said plate, and
- means for adjusting the distance between the open mouth of the conduit and the trough-shaped blades to regulate the aspiration that the latter creates inside said conduit.
Dependencies are inferred from the claim text.