Disclosed is a vehicle air conditioner, wherein an integrated air conditioning module using a heat pump system enables, in order to secure interior space, the optimizing of the arrangement thereof and the arrangements among the elements thereof, and the increasing of a coupling force between an air conditioning module and a distribution duct.

A thermal request mediating device includes a calculation unit configured to calculate amounts of heat for thermal circuits, a mediation unit configured to determine amounts of absorbed heat or amounts of discharged heat which are allocated to the thermal circuits based on amounts of heat transferable between the thermal circuits, and a distribution unit configured to distribute amounts of absorbed heat or amounts of discharged heat to units which are included in each thermal circuit based on the determined amounts of absorbed heat or amounts of discharged heat.

A heating, ventilation, and air conditioning (HVAC) system having a condenser, an evaporator, a heater, a compressor, and a heat exchanger. The heat exchanger is in an auxiliary case that is spaced apart from the heater and the evaporator. The heat exchanger is in fluid communication with the condenser and the compressor. In a heating mode, refrigerant warmed by the compressor circulates through the heat exchanger to warm airflow moving across the heat exchanger. In a cooling mode, refrigerant cooled by the condenser circulates through the heat exchanger to cool airflow moving across the heat exchanger.

An HVAC system of a vehicle includes: a battery line configured to thermally interconnect a first radiator and a high-voltage battery core and provided with a first pump; a refrigerant line having a compressor, a condenser, and an evaporator; an indoor cooling line interconnecting an indoor HVAC cooling core and the evaporator and having a second pump; an indoor heating line thermally interconnecting an indoor HVAC heating core and a condenser and having a third pump; battery cooling lines branching from opposite side points of the high-voltage battery core in the battery line, respectively, and connected to the indoor cooling line; battery heating lines branching from the opposite side points of the high-voltage battery core in the battery line, respectively, and connected to the indoor heating line; and a first valve disposed at one of the opposite branching points in the battery line.

The present invention relates to an air conditioning system for a vehicle and a method for controlling the same and, more specifically, to an air conditioning system for a vehicle and a method for controlling the same in which an opening/closing valve and an expansion valve are installed on a branch line connecting a first air conditioning unit and a second air conditioning unit, the opening/closing valve is always open so as to always supply a refrigerant to the second air conditioning unit during a cooling mode, and the opening/closing valve is always closed so as to always block the refrigerant supply to the second air conditioning unit during a heating mode, such that the refrigerant flows into the branch line of the second air conditioning unit even during a single cooling mode, thereby solving the problem wherein the pressure of a compressor increases, oil is forcibly circulated through a notch of the expansion valve, thereby solving the problem wherein the oil circulation rate decreases, and the refrigerant supply to the second air conditioning unit is blocked during a dual heating mode, thereby solving the problem wherein the heating performance of an electric heating type heater decreases when the second air conditioning unit is operated.

A vehicular heat management system includes a heat pump cycle capable of heating a heat-exchanging-object fluid by using exhaust heat of an in-vehicle device as a heat source that radiates heat during operation, and an exhaust-heat refrigerant circuit that releases the exhaust heat to outside air through an exhaust-heat refrigerant. The heat pump cycle includes a recovery heat exchange portion that performs heat exchange between a heated air heated by the exhaust heat and a cycle refrigerant circulating in the heat pump cycle. The exhaust-heat refrigerant circuit includes an exhaust-heat exchange portion that performs heat exchange between the heated air and the exhaust-heat refrigerant. The recovery heat exchange portion and the exhaust-heat exchange portion are integrally formed as a combined heat exchanger capable of transferring heat between the cycle refrigerant and the exhaust-heat refrigerant.

An air conditioning and battery cooling arrangement is provided having an A/C coolant circuit and an electric drive train coolant circuit as well as a refrigeration circuit, wherein the A/C coolant circuit and the electric drive train coolant circuit are coupled to each other via a 4/2-way coolant valve in such a manner that the A/C coolant circuit and the electric drive train coolant circuit are configured to be operated separately or for serial through-flow.

An conditioning device for a fuel cell vehicle includes a heater core configured to heat air in a vehicle cabin with a coolant to be discharged from a FC stack cooled by the coolant as a heat source, a coolant heating heater configured to heat the coolant, an air heating heater configured to further heat air warmed by the heater core, and a vehicle ECU configured to, in a case where a heater core outlet coolant temperature based on a target blowing temperature is equal to or higher than an FC stack inlet target temperature, perform control such that the air heating heater is operated with an output set based on the heater core outlet coolant temperature, and the coolant heating heater is operated with an output set based on a heater core inlet target coolant temperature calculated according to the set output of the air heating heater.

A refrigeration cycle device for a vehicle includes a refrigerant circuit, in which a zeotropic refrigerant mixture is circulated, including a utilization heat exchanger including a first heat exchange portion and a second heat exchange portion disposed in series with the first heat exchange portion in a direction in which the zeotropic refrigerant mixture flows in the refrigerant circuit. The first heat exchange portion is disposed on an upstream side of the second heat exchange portion in a direction in which the zeotropic refrigerant mixture flows when the utilization heat exchanger functions as an evaporator of the zeotropic refrigerant mixture.

The present application provides an automotive air conditioning system including a compressor, a first heat exchanger, a first pump, a first combined valve, a second combined valve, an outdoor heat exchanger and a second heat exchanger. The automotive air conditioning system has a first cooling mechanism and a first heating mechanism. Under the first cooling mechanism, the compressor, the outdoor heat exchanger, the first combined valve and the first heat exchanger communicate in sequence to form a circuit, while the first pump, the first heat exchanger and the second heat exchanger communicate to form another circuit. Under the first heating mechanism, the compressor, the first heat exchanger, the second combined valve and the outdoor heat exchanger communicate in sequence to form a circuit, while the first pump, the first heat exchanger and the second heat exchange communicate in sequence to form another circuit.