Motor vehicle ventilator, thermal management device and method using such a motor vehicle ventilator

A method for controlling a motor vehicle heat control system, the method comprising:

• detecting a position of a head of an occupant of a vehicle,
• actuating a vent orientation motor to oscillate an orientation of a motor vehicle interior vent between an upper position in which a flow of air is oriented toward the head of the occupant and a lower position in which the flow of air is oriented toward a torso or pelvis of the occupant,
• wherein the vent comprises:
• an opening, through which the flow of air can flow during operation;
• a flared guide surface, extending from the opening, and flared in the direction of flow of the flow of air;
• and
• a needle valve having a needle valve head including:
• a tip situated at the end of the needle valve,
• a portion of maximum width with a shape corresponding to the opening, with dimensions of between 80% and 100% of those of the opening,
• a flared base in the direction of flow connecting the head to an elongate body,
• the needle valve being movable in translation between two end positions, namely:
• a deployed end position in which the widest portion of the needle valve head is downstream of the opening in the direction of the space to be conditioned, the flow of air then being laminar and guided by the guide surface in a divergent flow, and
• a retracted end position in which the widest portion of the needle valve head is upstream of the opening, the flow of air then being laminar and guided by the tip of the needle valve in a convergent flow.