A vehicle has a passenger cabin and a ventilation system (10, figure 1A) including a vent 40 to discharge air into the cabin. The air may be heated or cooled. The vent comprises a housing 43,55 defining a vent inlet 51, vent outlet 42 and a chamber therebetween. A flow divider 60 splits the chamber into first and second passages 46,47 and includes a trailing edge at which the passages converge. A valve 50 located upstream of the flow divider is moved (e.g. rotated) relative to the flow divider to control the proportion of air flows ‘A1’,‘A2’ in the passages and so determine the direction of a combined outward flow ‘A’. At least a two millimetre (2 mm) gap ‘G’ separates the valve and flow divider throughout the range of movement of the valve, which ideally prevents whistling noises. The gap is ideally not more than 5 mm. The vent outlet may be a curved, elongate slot that follows the curvature of a dashboard it is in to extend across a width of the cabin. The flow divider extends the length of the vent outlet.
Vehicle cabin ventilation
2022-03-02
Patent
Electronic Resource
English
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |