# US 11,078,920 B2 · Propeller for fan of a thermal system of a motor vehicle, fan and thermal system comprising such a propeller > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,078,920 B2 - Document ID: US11078920B2 - Status: Granted - Kind: B2 - Application number: 16/623,537 - Filed: 2018-06-29 - Published: 2020-05-07 - Granted: 2021-08-03 - Earliest claimed: 2017-06-30 - Assignees: Valeo Systemes Thermiques - Applicants: Valeo Systemes Thermiques - Inventors: Manuel Henner; Bruno Demory - Web page: https://patentgrep.com/patent/US11078920B2 ## CPC - F04D 29/329: {Details of the hub} - F04D 19/002: {Axial flow fans} - F04D 25/06: the pump being electrically driven (F04D25/08 takes precedence) - F04D 25/082: {the unit having provision for cooling the motor} - F04D 29/326: {comprising a rotating shroud} - F04D 29/38: Blades {(for axial flow compressors F04D29/324)} - F04D 29/5806: {Cooling the drive system} - F01P 2005/046: {with electrical pump drive} - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) ## Abstract The propeller (16) for a fan (14) of a motor vehicle thermal system (10) comprises a bowl (22) for receiving a motor (18) of the propeller (16) and at least one blade (34) connected to the receiving bowl (22), the receiving bowl (22) further comprising: a central member (26) comprising at least one through-orifice (30), a collar (28) extending around the central member (26), the blade (34) extending radially outwards from the collar (28), and at least one rib (36) arranged on a front face of the collar (28), with reference to a direction of flow of an air flow (F) generated by the propeller (16), extending radially outwards so as to have a curved shape oriented in the opposite direction to a direction of rotation of the propeller (16). ## Claims ### Claim 1 A propeller for a fan of a motor vehicle thermal system, the propeller comprising: a bowl for receiving a motor of the propeller, and at least one blade connected to the bowl, the bowl further comprising: a central member comprising at least one through-orifice, a collar extending around the central member, the at least one blade extending radially outwards from the collar, and at least one rib arranged on a front face of the collar, with reference to a direction of flow of an air flow generated by the propeller, extending radially outwards so as to have a curved shape oriented in the opposite direction to a direction of rotation of the propeller. ### Claim 2 (depends on 1) The propeller as claimed in claim 1, in which an angle formed by a straight line tangent to one of the at least one ribs and passing through an outer radial end of the one of the least one ribs, and a straight line passing through a center of the collar and the outer radial end of the one of the at least one ribs, is between 20° and 80°. ### Claim 3 (depends on 1) The propeller as claimed in claim 1, in which the collar extends at a distance from the central member so as to form a passage between the collar and the central member. ### Claim 4 (depends on 3) The propeller as claimed in claim 3, further comprising: at least one second rib arranged on the front face of the collar and extending partially on the passage formed between the collar and the central member, at least one the second rib extending radially outwards so as to have a curved shape oriented in the opposite direction to the direction of rotation of the propeller. ### Claim 5 (depends on 4) The propeller as claimed in claim 4, wherein the central member is offset relative to the collar, in a direction orthogonal to the collar. ### Claim 6 (depends on 1) The propeller as claimed in claim 1, wherein the central member is disk-shaped. ### Claim 7 (depends on 6) The propeller as claimed in claim 6, wherein the at least one through-orifice of the central member is formed in the center of the central member. ### Claim 8 (depends on 1) The propeller as claimed in claim 1, wherein the central member, the collar and the at least one blade are integrally formed. ### Claim 9 A fan for a motor vehicle thermal system comprising: a propeller comprising: a bowl for receiving a motor of the propeller, and at least one blade connected to the bowl, the bowl further comprising: a central member comprising at least one through-orifice, a collar extending around the central member, the at least one blade extending radially outwards from the collar, and at least one rib arranged on a front face of the collar, with reference to a direction of flow of an air flow generated by the propeller, extending radially outwards so as to have a curved shape oriented in the opposite direction to a direction of rotation of the propeller; and an electric motor comprising a through-orifice arranged facing the at least one through-orifice of the central member of the propeller. ### Claim 10 A thermal system for a motor vehicle comprising: a fan comprising a propeller, and an electric motor comprising a through-orifice arranged facing a corresponding through-orifice of the central member of the propeller, the propeller comprising: a bowl for receiving a motor of the propeller; and at least one blade connected to the bowl, the bowl further comprising: a central member comprising at least one through-orifice, a collar extending around the central member, the blade extending radially outwards from the collar, and at least one rib arranged on a front face of the collar, with reference to a direction of flow of an air flow generated by the propeller, extending radially outwards so as to have a curved shape oriented in the opposite direction to a direction of rotation of the propeller.