An air conditioning device for a vehicle has an air-conditioning case, a heater core, a first air mix door, a second air mix door, and an actuator. The air-conditioning case therein has a first air passage and a second air passage. The first air mix door and the second air mix door are arranged in the first air passage and the second air passage respectively, and adjust a ratio between a flow rate of air passing through the heater core and a flow rate of air bypassing the heater core by an opening/closing operation. The actuator interlocks the opening/closing operations of the first air mix door and the second air mix door such that opening degrees of the first air mix door and the second air mix door are different from each other.

Disclosed is an air conditioning system for a vehicle which includes a cold air passageway having a heat exchanger for cooling and a warm air passageway having a heat exchanger for heating inside an air-conditioning case to carry out cooling and heating and which controls to inhale indoor air inside the vehicle, pass the air through the heat exchanger for cooling and discharge the air outside the vehicle in a specific mode, thereby preventing frosting of the heat exchanger for cooling because supplying air of high temperature dehumidified inside the interior of the vehicle to the heat exchanger for cooling, and enhancing heating performance by rising refrigerant pressure and temperature in the refrigerant cycle without needing additional components.

The present invention relates to an air conditioning system and, more particularly, to an air conditioning system comprising, within a single air conditioning case: a cool air passage in which an evaporator is installed; a warm air passage in which a condenser is installed; an installation space portion in which air conditioner parts such as a compressor are installed; and an air discharge passage for discharging, to the outside, air unnecessary for cooling and heating, thereby enabling attachment and detachment inside a vehicle, and enabling use as a portable air conditioner as well as a vehicle air conditioner. In addition, as the system is capable of cooling and heating, a separate heater core or PTC heater for heating is not required, thereby the structure is simple, and the system is capable of controlling cooling and heating modes through a single operation door, thereby allowing the system to be miniaturized.

An air-conditioning system for conditioning air in a vehicle passenger compartment is configured to operate in a cooling system mode for cooling air to be supplied to the passenger compartment and in a heat pump mode for heating the same, and to operate in a reheating mode. The air-conditioning system includes a housing having a first flow channel and a second flow channel for guiding air to an air distribution system having discharge ports communicating with the passenger compartment, and a refrigerant circulation system having at least two heat exchangers. In this case, the first heat exchanger that operates as an evaporator regardless of operating modes is disposed in the first flow channel, and the second heat exchanger that operates as a condenser/gas cooler regardless of operating modes is disposed in the second flow channel.

An air-conditioning system for a vehicle is provided. The system includes a heating blower and a cooling blower that are disposed on opposite sides with an adjustment space being interposed there between. A first duct and a second duct transfer outside air or inside air and extend in the axial direction of the heating blower and the cooling blower. An inlet door unit is disposed in the adjustment space and adjusts the air introduced from the first duct or the second duct to be selectively supplied to the heating blower or the cooling blower. A condenser and an evaporation core are respectively disposed in the radial directions of the heating blower and the cooling blower and are connected via a refrigerant line. An outlet door unit regulates the air to be selectively discharged to the indoor space or the outdoor space.

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).

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 heating and air conditioning device includes a warm air path that leads through a heat exchanger to a mixing chamber and to outlets of the heating and air conditioning device, and a cold air path that leads from the evaporator to the mixing chamber and the outlets of the heating and air conditioning device. A warm air duct is located at an end of the warm air path and an entrance to the mixing chamber. A cold air duct is located at the end of the cold air path and the entrance to the mixing chamber. One or more openings are formed on one of a side wall of the warm air duct and a side wall of the cold air duct so that air can flow from the cold air path into the warm air duct and from the warm air path into the cold air duct.

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.

An air conditioning case in an air conditioning unit for a vehicle forms a first air passage, a second air passage bypassing the first air passage, and a mixing space connected to a first blowing port and a second blowing port through which air is blown out into a vehicle interior. A cooling heat exchanger cools and allows air to flow into the first air passage and the second air passage. A heating heat exchanger is disposed in the first air passage. A tunnel forming portion provides a tunnel passage into which a part of air from the first air passage flows. The tunnel forming portion includes a first outflow portion connected to the first blowing port, and a second outflow portion connected to the second blowing port, and separates the air flowing in the tunnel passage from the air flowing from the second air passage.