An air handling system for a heating, ventilation, and air conditioning system of a motor vehicle includes a conduit configured to convey air from the air handling system to a vent of the air handling system. A control door is rotatably disposed in the conduit. The control door selectively rotates between a first position and a second position. The first position blocks passage of the air flowing through the conduit. The second position blocks passage of the air flowing through a first portion of the conduit and allows the air to flow through a second portion of the conduit. A control feature is disposed in the second portion of the conduit to control at least one of a volumetric flow rate and a pressure of the air flowing through the second portion.

When the output shaft rotates by 180 from a reference angle in a forward direction, the link mechanism moves the inside-outside air door from one position to the other one position of an outside air blocking position and an inside air blocking position. When the output shaft further rotates by 180 in the forward direction from a rotation angle of the output shaft, which has rotated by 180 from the reference angle in the forward direction, the link mechanism moves the inside-outside air door from the other one position to the one position. When moving the inside-outside air door between the one position and the other one position, the actuator rotates the output shaft in an operation range between the reference angle and the rotation angle of the output shaft rotated by 180 from the reference angle in the forward direction in accordance with a detection value of the potentiometer.

An air conditioning case in an air conditioning unit for a vehicle forms a first air passage, a second air passage bypassing the first air passage, and a mixing space connected to a first blowing port and a second blowing port through which air is blown out into a vehicle interior. A cooling heat exchanger cools and allows air to flow into the first air passage and the second air passage. A heating heat exchanger is disposed in the first air passage. A tunnel forming portion provides a tunnel passage into which a part of air from the first air passage flows. The tunnel forming portion includes a first outflow portion connected to the first blowing port, and a second outflow portion connected to the second blowing port, and separates the air flowing in the tunnel passage from the air flowing from the second air passage.

A rotary shaft assembly includes an outer shaft, an outer opening being formed on a circumferential wall of the outer shaft, and a nested shaft which is rotatably supported within the outer shaft, a nested opening being formed on a circumferential wall of the nested shaft. The nested shaft and the outer shaft are configure to be rotatable with respect to each other about a common axis such that a relative rotation angle between the outer shaft and the nested shaft varies.

The invention relates to an air deflector device for an air conditioning system in a motor vehicle. The air deflector device has at least one closure element and at least one air mixing element. The closure element and the air mixing element have a common rotational axis in the air deflector device. The closure element extends in the direction of the rotational axis across the entire depth of a cross-section of a flow passage to be closed off in the air conditioning system, and comprises retaining elements. The air mixing element, which extends in the direction of the rotational axis, is embodied according to the invention with cross-flow openings, so that a cross-section of at least one flow passage of the air conditioning system can be adjusted based on the position of the air deflector device.

The present teachings provide for an HVAC assembly including a housing and a door. The housing can define a first flue. The first flue can be configured to direct a first airflow through the housing. The door can be received in the housing and can be movable between a first position and a second position. The door can have an edge and an upstream surface. The edge can form a seal with the housing when the door is in the first position. The edge can be spaced apart from the housing when the door is in the second position. The upstream surface of the door can define a plurality of channels proximate to the edge of the door.

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.

A two-door HVAC air intake comprising an air intake body having a fresh air opening and first and second recirculated air openings is disclosed. A first door is provided that is movable from a first recirculation opening-unblocking/fresh air opening-blocking position to a first recirculation opening-blocking/fresh air opening-unblocking position. A second door is provided that is movable from a second recirculation opening-unblocking position to a second recirculation opening-blocking position. The doors may be shell doors or flap doors. Fresh air mode is achieved by moving the first and second doors to their recirculation opening-blocking positions. Partial air recirculation mode is achieved by moving the first door to its first recirculation opening-blocking position and the second door to its second recirculation opening-unblocking position. Full air recirculation mode is achieved by moving the first door to its first recirculation opening-unblocking/fresh air opening-blocking position and the second door to its second recirculation opening-unblocking position.

An air conditioner for a vehicle, which includes an air conditioning case having an air passage formed therein, a cooling heat exchanger provided in the air passage of the air conditioning case to heat-exchange with air passing through the air passage, and a heating heat exchanger, comprises: a front seat temperature door which adjusts an opening degree between a front seat cold air passage and a part of a hot air passage; a first rear seat temperature door which is disposed between the cooling heat exchanger and the heating heat exchanger and adjusts an opening degree of another part of the hot air passage; and a second rear seat temperature door which is disposed in the downstream of the heating heat exchanger and adjusts an opening degree between the hot air passage and a rear seat cold air passage, wherein the second rear seat temperature door includes an asymmetric dome.

An air-conditioning system for air-conditioning an interior of a vehicle may include a fan for driving air. The system may include a control device that may include a circulating air inlet for drawing in circulating air from the interior, a fresh air inlet for drawing in fresh air from an environment of the vehicle, and an air outlet. The control device may include a control valve adjustable between a circulating position and a fresh air position. The control valve may include at least one non-return check valve. The non-return check valve may permit a flow to pass through the control valve in one direction and block the flow in an opposite direction.