A vehicle heating, ventilating and/or air conditioning device (10) comprising a housing (12), in which at least two hot-air guiding ducts (18, 19) are formed for different vehicle interior regions, the hot-air guiding ducts (18, 19) being separated by a housing wall (28). A common heating device (30) and a common air treatment element (32) are provided which are arranged in each case in both hot-air guiding ducts (18, 19), the air treatment element (32) being arranged in the air flow downstream of the heating device (30). The air treatment element (32) has a dividing wall (34) which divides the air treatment element (32) into at least two part regions which are assigned to in each case one hot-air guiding duct (18, 19).

In a vehicle air conditioner device of a heat pump system, control of an air mix damper is appropriately performed in each operation mode, thereby achieving efficient vehicle interior air conditioning. The vehicle air conditioner device includes an air mix damper 28 to adjust a ratio at which air in an air flow passage 3 passed through a heat absorber 9 is to be passed through a radiator 4. In a cooling mode, a controller controls the air mix damper 28 to adjust the ratio at which the air is to be passed through the radiator 4 on the basis of one, any combination, or all of a target outlet temperature, a temperature of the radiator and a temperature of the heat absorber, and in a heating mode, the controller controls the air mix damper 28 to pass all the air in the air flow passage 3 through the radiator 4.

The invention relates to an air conditioning device for a motor vehicle, comprising, arranged in a housing (10), a first heat exchanger (21), through which an air flow (14) can flow and which can be operated as an evaporator of a refrigerant circuit, a second heat exchanger (20, 22) connected downstream of the first heat exchanger in the flow direction of the air flow (14), through which the air flow (14) can flow, and which is provided with a resistance heating element, and further comprising an air guiding flap (30) designed as a bypass flap, by way of which, depending on their position, parts of the air flow (14) can be guided past the second heat exchanger (20, 22).

An HVAC apparatus for a vehicle that can simplify air flow path therein and occupy a small installation space, includes a housing; an evaporator core provided in parallel with the ground within a predetermined angular range to the ground; an internal condenser provided the evaporator core, and a high voltage PTC provided the internal condenser, the evaporator core, the internal condenser, and the high voltage PTC are provided in parallel with the ground within a predetermined angular range from the ground.

A heat pump air-conditioning system includes a (HVAC) assembly, a compressor, an outdoor heat exchanger, and a first plate heat exchanger. The HVAC assembly includes an indoor condenser, an indoor evaporator, and an damper mechanism. The compressor communicates to the indoor condenser. The indoor condenser communicatees to the outdoor heat exchanger and further to the outdoor heat exchanger through a first enthalpy-increased branch. The outdoor heat exchanger communicates to the indoor evaporator and further to a moderate-pressure air inlet of the compressor through a second enthalpy-increased branch. The indoor evaporator communicates to a low-pressure air inlet of the compressor. The first enthalpy-increased branch and the second enthalpy-increased branch exchange heat by using the first plate heat exchanger. The second enthalpy-increased branch is provided with a first expansion valve. The outdoor heat exchanger is in communication with the first plate heat exchanger through the first expansion valve.

According to some embodiments, a zonal conditioning system for a vehicle comprises a headliner assembly configured to be secured to the top surface of a vehicle interior, wherein the headliner assembly comprises a first side positioned away from the vehicle interior and hidden from the vehicle interior, and a second side positioned toward the vehicle interior, the headliner assembly comprising at least two vents through which air selectively passes. The zonal conditioning system further includes at least two fluid modules positioned along the first side of the headliner assembly, wherein each of the fluid modules comprises a fluid transfer device and an outlet. In some embodiments, at least one property of the air discharged through the first and second vents can be selectively regulated to create separate conditioning zones within the interior of the vehicle.

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.

A vehicular air conditioning device includes a blower, a heating heat exchanger, an auxiliary heater, and a blower controller. The heating heat exchanger heats blown air by exchanging heat between the blown air and the cooling water of the in-vehicle device emitting heat during operation. The blower controller is configured to control the operation of the blower. The blower controller is configured to increase a blowing capacity of the blower with increase of a temperature of the cooling water. The blower controller, during operation of the auxiliary heater, increases the blowing capacity after a waiting time during which the increase of the blowing capacity is prohibited has elapsed since a start-up switch of a vehicle system is turned on. The vehicular air conditioning is capable of implementing a quick warming of the in-vehicle device without impairing the heating feeling of occupant.

An air conditioner for a vehicle includes an air conditioning case having a first air passageway and a second air passageway partitioned by a separator therein; a PTC heater disposed in each of the first air passageway and the second air passageway to generate heat by electric energy; and a control unit for controlling operation of the PTC heater. The control unit individually controls discharge temperature of the first air passageway and discharge temperature of the second air passageway of the PTC heater, and if target discharge temperature of the first air passageway and target discharge temperature of the second air passageway are different from each other, the control unit calculates and outputs a compensation value for the PTC heater output of at least one of the first air passageway and the second air passageway. The PTC heater therefore has a reduced output when controlling for dual temperatures.

An electric heater in particular for a heating or an air-conditioning system of a motor vehicle, with a heater core having a plurality of electric heating elements having heaters and contact elements to electrically contacting the heaters, said heater core further having a plurality of radiator elements which thermally contact the heating elements, wherein the heater comprises a central portion and two lateral portions, wherein the central portion is arranged between the two lateral portions, wherein the radiator elements are thermally contacting the heater in a central portion and the contact elements are electrically contacting the heater in the lateral portions.