An air vent in a motor vehicle interior includes an air supply channel, a first air discharge channel, which branches off from the air supply channel and includes a first air inlet opening and a first air outlet opening. The air vent also includes a second air discharge channel, which branches off from the air supply channel and includes a second air inlet opening and a second air outlet opening, and an air adjuster for adjustment of the quantity of air transported through the first air discharge channel and the second air discharge channel. The air adjuster has a round cross-section, on the outer face of which a first, a second, and a third segment are provided, which are spaced apart from one another, and which respectively close or at least partially open the first air inlet opening, the second air inlet opening, or the air supply channel, as required.

An air-treatment system for a confined environment, in particular the cabin of a vehicle, includes: a supply unit including an inlet port, a delivery port, and a purge port, the supply unit being configured for delivering air to said confined environment through the delivery port; and a first filtering device having a first filtration level, and a second filtering device having a second filtration level, each of the first and second filtering devices being arranged in fluid communication with the inlet port of said supply unit at a circuit node. A single flow-control valve determines inlet flow through one or other of the filtering devices.

A vehicular air conditioning system includes an intake case having an indoor air inlet for introducing an indoor air present in a vehicle interior and an outdoor air inlet for introducing an outdoor air present outside a vehicle, an intake door installed in the intake case to selectively block one of the outdoor air inlet and the indoor air inlet while rotating about a rotation center shaft, and a water blocking part configured to block water flowing into the vehicle interior from the indoor air inlet of the intake case.

The present application discloses an air conditioning system for a vehicle and an operating method therefor, which relates to the technical field of vehicle air conditioners. The system includes a motor (5), an operating dial (3) and internal and external-circulation ventilation doors (1, 2), and the motor (5) drives the operating dial (3) to drive the internal and external-circulation ventilation doors (1, 2) to rotate to achieve the purpose of different internal and external air-intake ratios. The operating method includes: receiving a pulse signal, wherein the pulse signal comprises a preset direction of rotation and a preset step count of rotation of the motor (5); and driving the motor (5) to rotate in the preset direction by the preset step count, to drive the operating dial (3) to rotate, to cause the internal-circulation ventilation door (1) to rotate to a first preset angle, and cause the external-circulation ventilation door (2) to rotate to a second preset angle, so that an air-intake ratio of an internal air-intake volume and an external air-intake volume of the air conditioning system is a preset first ratio. The system and the method can control the ratio of the mixing of the internal air and the external air, to satisfy different usage conditions, to achieve the purpose of improving the fuel-oil economic efficiency of the entire vehicle, the endurance mileage of new-energy vehicles and the comfort of the air-conditioner blown air.

A flap stopper for a rotatable flap for controlling an air flow may include a round bearing support disc, a round stopper support disc, stop elements, and connecting ribs. The stopper support disc may be spaced apart from the bearing support disc in an axial direction. The stop elements may be arranged on the stopper support disc. The connecting ribs may be arranged between the bearing support disc and the stopper support disc. The bearing support disc, the stopper support disc, the stop elements, and the connecting ribs may be formed as an integral plastic injection-molded part.

A heating, ventilation, and air condition (HVAC) unit including a casing and a door. The casing includes a body portion and a lip portion extending from the body portion. The body portion defines a first inlet opening and a second inlet opening. The door is pivotable between a first position in which ambient air is able to flow through the second inlet opening and air within an occupant cabin is restricted from flowing through the first inlet opening, and a second position in which ambient air is restricted from flowing through the second inlet opening and air within the occupant cabin is able to flow through the first inlet opening. A distance from an outward most location where the door and the lip portion contact each other to an edge of the lip portion that is further outwardly of the outward most location is between 0.1 millimeters and 5 millimeters.

The present disclosure provides a casing for an air conditioning unit including a main body, a door, a passing defining member, and a drain channel. The main body includes a fresh-air passage and a recirculation-air passage. The recirculation-air passage is positioned below the fresh-air passage. The door selectively opens and closes a communication hole through which the fresh-air passage and the recirculation-air passage are in fluid communication with each other. The passage defining member is disposed upstream of the communication hole and defines a lower side of the fresh-air passage. The drain channel extends from the passage defining member to a space outside of the recirculation-air passage to discharge condensed water generated in the fresh-air passage.

A fluid flow controller includes a housing defining a first and a second fluid path. A first door is in the first fluid path to selectably control a first flow through the first fluid path in response to a rotation of a first lever. A second door is in the second fluid path to selectably control a second flow through the second fluid path in response to a rotation of a second lever. A flexible kinematic link is to connect an actuator arm rotatable about an actuator arm axis to the first lever via first pin joints for rotation of the first door about the first pivot axis. A flexible link length is responsive to a compressive and a tensile load. A rigid link is to connect the actuator arm to the second lever via second pin joints for rotation of the second door about the second pivot axis.

An air intake of an air conditioning system a motor vehicle having a fresh air duct configured to receive fresh air, a recirculated air duct configured to receive air from a passenger area of the motor vehicle, and an air outlet configured to channel the fresh air or the air from a passenger area of the motor vehicle to a blower. The air intake also has a valve disposed in the housing and rotates about a rotational axis between a first position and a second position.

Disclosed is an air conditioner for a vehicle which has inside air intake ports formed on the side surface of a cylindrical intake duct and the side surface of a cylindrical intake door so as to partially inhale inside air during an outside air inflow mode, thereby reducing manufacturing processes and manufacturing costs because there is no need to add a separate component for inhaling inside air in the outside air inflow mode, controlling intake amounts of outside air and inside air through a recess part formed on the outer circumferential surface of the intake door, and enhancing cooling and heating performance by partially inhaling inside air during the outside air inflow mode.