An air-conditioning unit for a vehicle includes an air conditioning case, a blower, and a rectifying mechanism. The blower has a blower fan rotating around a fan axis and arranged in an in-case passage of the air conditioning case, and blows out air drawn from one side in an axial direction of the fan axis by rotation of the blower fan. The rectifying mechanism is arranged downstream of the blower fan in the in-case passage, and the air passes through the rectifying mechanism. The blower fan is arranged so that the other side of the fan axis that is opposite to the one side extends toward a downstream side of the in-case passage. The rectifying mechanism suppresses a swirling flow generated by the rotation of the blower fan in the air blown out from the blower fan as compared with the blown-out air prior to flowing into the rectifying mechanism.

An air conditioner for a vehicle includes: an air-conditioning case having therein an air flow passage through which air toward the vehicle interior flows, and an outlet opening formed at an upper part of the air-conditioning case and through which the air toward the vehicle interior passes; a heat exchanger disposed on a lower side of the outlet opening inside the air-conditioning case to exchange heat between air toward the vehicle interior and a heat-exchange medium; and an ion generator that includes electrodes to generate ions. The ion generator is mounted on the air-conditioning case such that the electrodes are exposed in air flowing through the air flow passage. The air-conditioning case has a collision-side wall surface with which the airflow having passed through the heat exchanger collides to be directed upward, and a lateral-side wall surface connected to and laterally adjacent to the collision-side wall surface. The ion generator is disposed at a predetermined position of the collision-side wall surface or the lateral-side wall surface.

An air ventilation device of a vehicle includes: a housing including an air inlet and an air outlet and a cooling core and a heating core disposed between the air inlet and the air outlet; a rear extending flow path extending to the rear of the vehicle, and having a first end connected to the air outlet of the housing and a second end connected to a back seat air vent disposed to face a back seat space; an air collecting flow path directly connecting the rear extending flow path and the air inlet of the housing; and an opening and closing door structure opening and closing air circulation between the rear extending flow path and the air outlet and air circulation between the air collecting flow path and the air inlet.

A vehicular air conditioning system and a control method thereof are provided. The vehicular air conditioning system includes: a plurality of mode doors configured to switch an air discharge mode in a passenger compartment, the mode doors including a defogging door, a vent door and a floor door; and a mode door air pressure reduction part configured to temporarily reduce an air pressure acting on at least one of the mode doors when the air discharge mode is switched.

An air conditioner for a vehicle includes: a casing; an air blower; and a mode switching portion switching an inlet mode to draw air into the casing and an outlet mode to blow out air to the vehicle interior. The casing has a driver seat inlet port from which air in a space adjacent to a driver seat is drawn in. The mode switching portion is configured to be switchable between a normal mode during which air drawn in from at least one of air inlets is blown out from both of a driver seat outlet and a passenger seat outlet and a driver seat mode during which air drawn in from the driver seat inlet port is blown out from the driver seat outlet. The driver seat inlet port is located in a region exposed to the space adjacent to the driver seat.

Described herein is a heating and/or air-conditioning device for a motor vehicle, the device including an inlet duct for the supply of fresh air, an air transmission branch, and an air heating branch, both supplied by the inlet duct and communicating with each other via a mixing zone. A butterfly flap is mounted pivotably around a rotation axis located at the mixing zone. The butterfly flap comprises a first wing associated with a first branch and a second wing associated with a second branch, as well as a wing extension elastically hinged to the first wing according to a hinge axis parallel to the rotation axis of the butterfly flap. Within the first branch are arranged abutment formations suitable to be engaged by the wing extension and to induce, during a rotation of the butterfly flap, a rotation of the wing extension with respect to the first wing.

An air flow control for a ventilation, heating, or air conditioning unit of a motor vehicle, having a housing with a cold air passage with a first inlet opening and with a hot air passage with a second inlet opening. At least one heating heat exchanger is disposed in the hot air passage in order to heat the air in the hot air passage with a mixing chamber for mixing a first partial air flow from the cold air passage and/or a second partial air flow from the hot air passage. The mixing chamber is disposed downstream of the hot air passage and of the cold air passage. A mixing flap substantially closes the first inlet opening. The housing downstream of the mixing chamber has a first outlet opening and at least one second outlet opening for the flowing of air out of the mixing chamber.

The present teachings include a heating, ventilation, and air conditioning (HVAC) unit including an evaporator, a heater core, and an airflow control door. The heater core is arranged downstream of the evaporator with respect to a direction of airflow through the HVAC unit. The airflow control door is downstream of both the evaporator and the heater core. The airflow control door is movable to increase and decrease a cross-sectional area of an airflow path downstream of the temperature control door, such as to facilitate mixing of airflow that has passed through the heater core with airflow that has passed around the heater core.

Air conditioning system for multi-zone air conditioning of a motor vehicle interior comprising a casing with a mixing chamber and several zone outlets outgoing from mixing chamber, in which an evaporator and at least one heat exchanger are disposed such that main air flow from evaporator through at least one heat exchanger into zone outlets is linear and at least two bypass channels, each comprising a louver, in order to circumvent at least one heat exchanger connect a region downstream of evaporator and a region downstream of at least one heat exchanger, wherein the first bypass channel, as a mixing bypass channel, opens out into mixing chamber and the second bypass channel, as a stratification bypass channel, opens out into a zone outlet.

A vehicle includes a heating, ventilation and air conditioning (HVAC) system for heating and cooling a passenger compartment. The HVAC system includes a refrigerant loop and a coolant loop, and an auxiliary coolant loop for heating and cooling at least a portion of the passenger compartment. The auxiliary coolant loop includes a pump for moving a coolant, within the auxiliary coolant loop, through a first heat exchanger coupled to the refrigerant loop via an expansion device, a second heat exchanger positioned within the passenger compartment, and a third heat exchanger coupled to the coolant loop. A flow control valve controls a flow of coolant to the third heat exchanger. The temperature of the coolant within the auxiliary coolant loop is controlled utilizing the flow valve and the pump. The first and third heat exchangers may be in parallel for controlling the movement of coolant there between to control temperature.