A vehicle air conditioner includes a duct in which a partition member forming a first flow path and a second flow path is provided, and a heat pump circuit. In the heat pump circuit, a first indoor heat exchanger that contributes to heating is located in the first flow path or faces an outlet of the first flow path, and a second indoor heat exchanger that contributes to cooling is located in the second flow path. The duct is provided with at least one heating exhaust port for discharging air cooled in the second indoor heat exchanger to the outside of the vehicle interior in heating operation, and a cooling exhaust port for discharging air heated in the first indoor heat exchanger to the outside of the vehicle interior in cooling operation.

To provide a vehicle air-conditioning unit that increases a volume of airflow delivered from a side vent opening in a foot mode, to effectively prevent fogging of windowpanes on right and left end sides. An air passage has: a first passage that guides hot air to a center vent opening, a side vent opening, and a defrost opening; and a second passage that is branched from the first passage and guides the hot air to a foot opening. A first door is arranged at a branched position of the air passage to the second passage, and a second door is arranged between the center vent opening and the defrost opening. In a foot mode, the first door closes the first passage and opens a first supply passage, the first supply passage communicates between the first and second passages, the second door closes the center vent opening and forms a second supply passage on an upstream side of the side vent opening, and the second supply passage communicates between an extending direction of the first supply passage and the side vent opening.

An air conditioner for a vehicle and a method of controlling the air conditioner to variably control a position of a rear seat cold air control door depending on a position of a front seat temperature-adjusting door. The position of the rear seat cold air control door is controlled according to rear seat air-conditioning modes (rear seat temperature-adjusting modes). In an air-conditioning case, the rear seat cold air control door is mounted on a rear seat air passageway, thereby distributing an optimal volume of cold air to the front seat air passageway and the rear seat air passageway by preventing a large volume of cold air from being supplied to the rear seat air passageway in the rear seat temperature-adjusting mode, securing linearity of temperature discharged to the rear seat.

The invention relates to an air-conditioning system, in particular for a motor vehicle, in which a fan takes in air which flows through an evaporator and/or a heater, wherein the fan has arranged downstream of it an air-bypass channel, which contains a bypass damper and guides air past the evaporator. In the case of an air-conditioning system in which the air-mass flow which flows through the air-bypass channel and/or evaporator can be adjusted in a particularly variable manner, an air-throttle element is arranged in and/or on the air-bypass channel and/or upstream or downstream of the evaporator.

The invention relates to a thermal management system for a hybrid or electric vehicle, including an air conditioning circuit including a two-fluid heat exchanger arranged jointly on a heat transfer fluid circuit, the heat transfer fluid circuit including: a first branch including a first pump, a heat transfer fluid heating device and the two-fluid heat exchanger, a second branch connected directly to the first branch. The heat transfer fluid circuit is configured such that, in a mode of heating the internal air flow, all of the heat transfer fluid passing through the heating device then passes through the two-fluid heat exchanger before returning to the first pump via the second branch.

An vehicle air conditioner (1A) includes a duct (3) in which a partition member (4) forming a first flow path (3A) and a second flow path (3B) is provided, and a heat pump circuit (2A). In the heat pump circuit (2A), a first indoor heat exchanger (12A) that contributes mainly to heating is located in the first flow path (3A) or faces an outlet of the first flow path (3A), and a second indoor heat exchanger (12B) that contributes mainly to cooling is located in the second flow path (3B). The ratio between an internal air and an external air within air flowing through each of the first flow path (3A) and the second flow path (3B) is adjustable. The duct (3) is provided with at least one of a heating exhaust port (35) for discharging air cooled in the second indoor heat exchanger (12B) to the outside of the vehicle interior in heating operation, and a cooling exhaust port (36) for discharging air heated in the first indoor heat exchanger (12A) to the outside of the vehicle interior in cooling operation. This configuration enables the air within the vehicle interior, the temperature of which has been adjusted by heating or cooling, to be efficiently utilized without wasting energy by discharging the air as it is to the outside.

A blower device includes a centrifugal fan that sucks air from one side of the blower device in an axial direction, and an air flow guide disposed between the centrifugal fan and the other side of the blower device in the axial direction. A first air flow from the centrifugal fan is bent toward the other side in the axial direction. A second air flow from the centrifugal fan is bent toward the other side in the axial direction, and then bent inward in the radial direction. A ratio of a pressure loss in the second air flow to a pressure loss in the first air flow before a downstream end of the air flow guide is smaller than a ratio of a pressure loss in the second air flow to a pressure loss in the first air flow before an upstream end of the air flow guide.

In an air conditioner casing of a vehicular air conditioner, an evaporator is arranged in a cold air passage, and a heater core is arranged in a warm air passage downstream from the cold air passage. A first air mixing damper is disposed in a warm air opening between the cold air passage and the warm air passage, and a second air mixing damper disposed in a cold air opening between the cold air passage and a bypass passage. Switching from a cooling mode to a heating mode, the first air mixing damper is opened at a constant speed proportional to the driving angle of a drive unit, and the second air mixing damper is initially rotated at a high speed by a predetermined angle immediately after the start of the closing operation, and thereafter is rotated at a low speed.

Disclosed is an air conditioner for a vehicle and a controlling method thereof. The air conditioner includes: a defrost vent and a face vent formed in a straight line; a defrost door part and a face door part formed in a straight line; and a duct separator having the defrost door part therein and being mounted inside an outlet, in which the defrost vent and the face vent are formed, to partition the defrost vent and the face vent, thereby enhancing assemblability by facilitating assembly even if the defrost door part and the face door part are mounted at different angles. Moreover, the air conditioner and the controlling method thereof can control an air outflow mode and an air inflow mode to be operated in interwork by connecting a first operating member for operating a mode door and a second operating member for operating an intake door with each other.

An vehicle air conditioner (1A) includes a duct (3) in which a partition member (4) forming a first flow path (3A) and a second flow path (3B) is provided, and a heat pump circuit (2A). In the heat pump circuit (2A), a first indoor heat exchanger (12A) that contributes mainly to heating is located in the first flow path (3A) or faces an outlet of the first flow path (3A), and a second indoor heat exchanger (12B) that contributes mainly to cooling is located in the second flow path (3B). The ratio between an internal air and an external air within air flowing through each of the first flow path (3A) and the second flow path (3B) is adjustable. The duct (3) is provided with at least one of a heating exhaust port (35) for discharging air cooled in the second indoor heat exchanger (12B) to the outside of the vehicle interior in heating operation, and a cooling exhaust port (36) for discharging air heated in the first indoor heat exchanger (12A) to the outside of the vehicle interior in cooling operation. This configuration enables the air within the vehicle interior, the temperature of which has been adjusted by heating or cooling, to be efficiently utilized without wasting energy by discharging the air as it is to the outside.