Propeller for fan of a thermal system of a motor vehicle, fan and thermal system comprising such a propeller

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.

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.