A method of controlling an air conditioning system for a vehicle is provided. The method includes detecting a cooling mode while the vehicle is being driven and comparing a vent discharge temperature of air with a cooling target temperature set by a user. When the vent discharge temperature is greater than the cooling target temperature the compressor RPM is determined and air is introduced into the vehicle without passing through the interior heat exchanger and the electric heater. When the vent discharge temperature is less than the cooling target temperature, the compressor RPM is determined and a door in the system is opened to guide the air through the interior heat exchanger to heat the air is heated and then the vent discharge temperature is compared with the cooling target temperature again, and the electric heater is operated.

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.

An air-conditioning unit for a vehicle has a case, a blower, a cooling heat exchanger and a heating heat exchanger. The cooling heat exchanger is located upstream of the blower inside the case. The heating heat exchanger is located downstream of the blower inside the case. The ventilation passage includes a before-heating passage extending from an air discharge port of the blower toward an air inlet of the heating heat exchanger. The before-heating passage includes, as a part of the before-heating passage, a flow-changing path that is curved to change a flow direction of the air discharged from the blower.

A method and a device for operating a multi-channel device wherein common control of an adjustment parameter is carried out in different zones in a synchronization mode. In another operating mode, the zones are controlled separately according to the individually adjusted adjustment parameters. There are at least a first parameter adjuster and a second parameter adjuster for setting the parameters for the at least two zones. The individual operating mode, on further actuating the second parameter adjuster so the selected parameter is brought into agreement with the parameter value selected by the first parameter adjuster, the second operating mode is exited and the at least two different zones are again controlled in common in the first operating mode.

A device for guiding air for an air conditioning system of a motor vehicle. The air conditioning system includes air outlets. The device is designed so that it encloses a volume and within the volume at least one air channel extending continuously from an inlet to an outlet is formed. The device is arranged in such a way that can be shifted in a continuously variable manner in a direction between two end positions, wherein the device in the end positions in each case closes an air outlet. The device may be arranged in an air conditioning system for a motor vehicle with means for conveying, for cooling and for heating an air mass flow, including a housing with a mixing chamber, in which the device for guiding air is arranged.

Air conditioning systems for heating and air conditioning a motor vehicle including a first heat exchanger, a second heat exchanger, a first flow channel, a second flow channel, and a flow guidance element fixed on the second heat exchanger or a retaining device. A flow is able to pass around both heat exchangers along the second flow channel and around only the first heat exchanger along the first flow channel. The flow guidance element projects into a branching region where air inside the system branches at an angle with respect to a face of the second heat exchanger, and the flow guidance element influences such air in the region between the heat exchangers.

Certain disclosed embodiments pertain to controlling temperature in a passenger compartment of a vehicle. For example, a temperature control system (TCS) can include an air channel configured to deliver airflow to the passenger compartment of the vehicle. The TCS can include a one thermal energy source and a heat transfer device connected to the air channel. A first fluid circuit can circulate coolant to the thermal energy source and a thermoelectric device (TED). A second fluid circuit can circulate coolant to the TED and the heat transfer device. A bypass circuit can connect the thermal energy source to the heat transfer device. An actuator can cause coolant to circulate selectively in either the bypass circuit or the first fluid circuit and the second fluid circuit. A control device can operate the actuator when it is determined that the thermal energy source is ready to provide heat to the airflow.

A cabin climate control assembly includes a first circuit for circulating a refrigerant; a second circuit for circulating a liquid: an evaporator configured to transfer heat energy to the refrigerant; a compressor configured to compress the refrigerant; a condenser configured to transfer heat energy between the compressed refrigerant and the liquid in the second circuit; and a heat exchanger configured to expel heat energy from the liquid in the second circuit. The cabin climate control assembly includes a heating mode in which it is configured to remove heat energy from air entering or circulating within a cabin via the evaporator, then add the removed heat energy and additional heat energy generated through work done by the compressor back into the air entering or circulating within the cabin via the heat exchanger, in order to raise the temperature of the cabin.

An air conditioner for a vehicle includes a heating line having a condenser at an inlet thereof and having an outlet communicating with an interior of the vehicle. A cooling line has an inlet communicating with the inlet of the heating line, an outlet communicating with the interior of the vehicle, and an evaporator connected to the condenser inside of the cooling line. One or more doors are provided to control a flow stream of each line and to control a temperature of air introduced into the interior of the vehicle.

A heating, ventilation, and air condition (HVAC) unit may include a casing, an evaporator, a heater core, and a first damper. The casing may define a front airflow passageway, a rear airflow passageway having an inlet, and first and second outlets in fluid communication with the rear airflow passageway. The evaporator and the heater core may be disposed within the casing. The first damper may be disposed within the casing between the evaporator and the heater core and movable between a first position in which airflow is directed to the heater core and a second position in which airflow is directed away from the heater core. Airflow across the evaporator from the front airflow passageway to the rear airflow passageway is directed to the first and second outlets when the first damper is moved from the first position toward the second position.