US 12,088,181 B2
Motorized ventilation device with an impeller for a motor vehicle
Kamel Azzouz, Le Mesnil Saint Denis (FR); Amrid Mammeri, Le Mesnil Saint Denis (FR); Farid Bakir, Le Mesnil Saint Denis (FR); Sofiane Khelladi, Le Mesnil Saint Denis (FR); and Cedric Lebert, Le Mesnil Saint Denis (FR)
Assigned to VALEO SYSTEMES THERMIQUES, Le Mesnil-Saint-Denis (FR)
Appl. No. 17/254,511
Filed by Valeo Systemes Thermiques, Le Mesnil-Saint-Denis (FR)
PCT Filed Jun. 19, 2019, PCT No. PCT/FR2019/051497
§ 371(c)(1), (2) Date Dec. 21, 2020,
PCT Pub. No. WO2019/243739, PCT Pub. Date Dec. 26, 2019.
Claims priority of application No. 1855532 (FR), filed on Jun. 21, 2018.
Prior Publication US 2021/0218315 A1, Jul. 15, 2021
Int. Cl. H02K 5/20 (2006.01); F04D 25/08 (2006.01); F04D 29/32 (2006.01); H02K 7/14 (2006.01); H02K 9/06 (2006.01)
CPC H02K 9/06 (2013.01) [F04D 25/082 (2013.01); H02K 5/207 (2021.01); F04D 29/329 (2013.01); H02K 7/14 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A motorized ventilation device for a motor vehicle, comprising:
an impeller free to rotate about an axis and formed by a cup on which blades are disposed;
a bell cap of an electric motor partly housed inside the cup;
a centrifugal device disposed between the cup and the bell cap and configured to guide and to accelerate an air flow,
wherein the cup comprises one opening for the passage of the air flow and wherein the bell cap comprises at least one orifice for the passage of the air flow,
wherein the cup is formed by a central wall that is perpendicular to a periphery of the cup, and the cup has a concave shape,
wherein the blades are evenly disposed and secured on the cup, extend radially toward an outside from the cup, and engage with a retention ring that stiffens the blades,
wherein the centrifugal device comprises at least one vane axially extending between the cup and the bell cap, and
wherein the at least one vane has a spiral shape, extends from a circular central zone, and the circular central zone has dimensions that are identical to those of the opening provided in the cup.