US 12,135,041 B2
Swirl flow ceiling fan
Narasimma Achari Arumugam, Ashok Nagar (IN); Rajagopal Nandakumar, Ashok Nagar (IN); and Thiyagarajan Thirunavukkarasu, Ashok Nagar (IN)
Appl. No. 18/248,976
Filed by Narasimma Achari Arumugam, Ashok Nagar (IN); Rajagopal Nandakumar, Ashok Nagar (IN); and Thiyagarajan Thirunavukkarasu, Ashok Nagar (IN)
PCT Filed Apr. 27, 2022, PCT No. PCT/IN2022/050397
§ 371(c)(1), (2) Date Apr. 13, 2023,
PCT Pub. No. WO2023/026297, PCT Pub. Date Mar. 2, 2023.
Claims priority of application No. 202141045372 (IN), filed on Oct. 6, 2021.
Prior Publication US 2024/0060511 A1, Feb. 22, 2024
Int. Cl. F04D 29/54 (2006.01); F04D 17/08 (2006.01); F04D 29/28 (2006.01)
CPC F04D 29/542 (2013.01) [F04D 17/08 (2013.01); F04D 29/281 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A swirl flow ceiling fan, comprising:
a cylindrical element having a central mounting disc, the central mounting disc having opposed upper surface and lower surface, the upper surface thereof being adapted for fixedly mounting the moving element of a motor, said cylindrical element further having a hyperbolically curved hub extended upwardly from the upper surface of the central mounting disc, the hyperbolically curved hub having an opposed upper surface and lower surface, the lower surface thereof having radially arrayed and outwardly projected plurality of involuted webs therefrom, said cylindrical element further having a plurality of spiral compartments extended radially outward around the hyperbolically curved hub thereof, the plurality of spiral compartments each spiral compartment having left spiral surface, right spiral surface, top surface and bottom surface, the plurality of spiral compartment wherein the spiral compartments are integrally stacked into a three-dimensional array in both of a radial direction and an axial direction, end-to-end, within the boundaries of two radially opposed outer cylindrical surface and inner cylindrical surface and two axially opposed upper surface and lower surface;
an inducer having an outer surface and inner surface, the outer surface thereof having radially arrayed and outwardly projected plurality of helical vanes therefrom, the inner surface of said inducer being fixedly secured to the lower surface of said cylindrical element, said inducer extending therefrom, the plurality of helical vanes of said inducer and the plurality of involuted webs of said cylindrical element are evenly aligned whereby continuous flow path is formed to draw-in the air while integrally driven by the motor;
a stationary enclosure having a substantially planar inlet disc, the inlet disc having opposed upper surface and lower surface, wherein a plurality of openings is formed therethrough whereby allowing the ambient air in, and the upper surface thereof being adapted for fixedly mounting the stationary element of said motor, said stationary enclosure further having a hemi-toroidal ring extended upwardly from the inlet disc, and a curved annular disc extended radially outward around the outer periphery of the hemi-toroidal ring thereof.