An air conditioning system for motor vehicles includes a compressor, a condenser, a plurality of air conditioning units connected in parallel with each other with respect to the compressor and the condenser, and a flow rate control unit configured to, when a specific one of the air conditioning units is additionally turned on or is turned off, prevent occurrence of a sudden change in refrigerant amount in the remaining air conditioning units.

A refrigerant circulating apparatus for a vehicle, includes at least one heat exchanger configured to heat-exchange a refrigerant; at least one valve provided to selectively flow the refrigerant to the at least one heat exchanger; and a refrigerant distribution unit having a first surface on which the at least one heat exchanger and the at least one valve are provided and a second surface on which at least one flow path through which the refrigerant circulates through the at least one heat exchanger and the at least one valve is provided.

A chiller system includes an intercooler configured to cool compressed charge air received from a turbocharger or a supercharger, a low temperature cooling circuit fluidly coupled to the intercooler, the low temperature cooling circuit circulating a coolant to provide cooling to the intercooler and including a low temperature radiator configured to cool the coolant, a chiller-accumulator loop having a combined chiller-accumulator, a chiller bypass line bypassing the chiller-accumulator, and a charging valve configured to selectively provide coolant to at least one of the chiller-accumulator loop and the chiller bypass line, and an air conditioner circuit circulating a refrigerant and having a primary circuit and a bypass circuit. Refrigerant is selectively supplied to the chiller-accumulator to further cool the coolant in the chiller-accumulator loop after the coolant is cooled by the low temperature radiator, thereby providing increased cooling to the intercooler and the compressed charge air to increase engine performance.

An air conditioning system for use in a vehicle includes at least one compressor, a condenser disposed downstream of the at least one compressor and a plurality of evaporators disposed downstream of the condenser with first and second evaporators fluidly coupled to each other in parallel. The at least one compressor, the condenser, and the plurality of evaporators are fluidly connected by refrigerant lines to form a refrigerant circuit. The air conditioning system also includes a plurality of shut-off valves, with one shut-off valve installed at a refrigerant inlet and another shut-off valve installed at a refrigerant outlet of the first evaporator. The shut-off valves are controlled to prevent undesired collection of refrigerant in the first evaporator.

A system is provided that includes mode, engine, and battery modules. The mode module is configured to determine whether to operate in an engine mode or a battery mode based on parameters. The engine module, while operating in the engine mode, runs a compressor at a first speed based on a temperature within a temperature controlled container of a vehicle and permits passage of refrigerant through eutectic plates independent of the temperature. A battery, while in the engine mode, is charged based on power received from an electrical source. The battery module, while operating in the battery mode and based on the temperature, runs the compressor at a second speed and prevents passage of the refrigerant through the eutectic plates. While in the battery mode, the battery is not being charged based on power from a shore power source and the electrical source from which power is received during the engine mode.

A refrigeration system may include a compressor, a first heat exchanger, a first working fluid flow path, and a second working fluid flow path. The first heat exchanger receives working fluid discharged from the compressor. The first working fluid flow path may receive working fluid from the first heat exchanger and may include an evaporator and an evaporator control valve that is movable between a first position allowing fluid flow through the evaporator and a second position restricting fluid flow through the evaporator. The second working fluid flow path may receive working fluid from the first heat exchanger and may include a eutectic plate and a plate control valve that is movable between a first position allowing fluid flow through the eutectic plate and a second position restricting fluid flow through the eutectic plate.

A system is provided that includes mode, shore power, engine, and battery modules. The mode module determines whether to operate in a shore power, engine, or battery mode based on parameters. The shore power module, while in the shore power mode, runs a compressor at a speed based on a temperature within a container of a vehicle and limits the speed to a first speed. A battery is charged based on utility power while in the shore power mode. The engine module, while in the engine mode, limits the compressor speed to a second speed. The battery, while in the engine mode, is charged based on power received from an alternator/generator. The battery module, while in the battery mode, limits the compressor speed to a third speed. While in the battery mode, the battery is not being charged based on power from a shore power source and the alternator/generator.

A compressor compresses a refrigerant. A eutectic plate cools a refrigerated space. An evaporator cools the refrigerated space. A mixture of the refrigerant and an oil flows through the evaporator and the eutectic plate. A control module controls the compressor, a first valve that permits or prevents flow of the mixture to the eutectic plate, and a second valve that permits or prevents flow of the mixture to the evaporator. In response to a temperature of the refrigerated space being greater than a predetermined temperature, the control module: increases a speed of the compressor; operates the compressor at the increased speed for a predetermined time period; after the predetermined period: opens the second valve; and closes the first valve, where the control module opens the second valve before closing the first valve, and decreases the speed of the compressor after closing the first valve.

Provided is an air-conditioning device for a vehicle, including: a cooling device configured to cool air passing through a duct; a heater core, which is arranged in the duct on a downstream side of airflow with respect to the cooling device, and is configured to use an engine coolant as a heat source to heat the air; a water valve provided in a coolant circulation system on an upstream side of the heater core; and a controller configured to control those components, in which the controller is configured to decrease an opening amount of the water valve in a predetermined cooling mode. The control is configured to, when the opening amount of the water valve is decreased, decrease a rotational speed of a compressor of the cooling device, and increase a target evaporator temperature of an evaporator of the cooling device, thereby decreasing cooling performance of the cooling device.

An air conditioning system for use in a vehicle includes at least one compressor, a condenser disposed downstream of the at least one compressor and a plurality of evaporators disposed downstream of the condenser with first and second evaporators fluidly coupled to each other in parallel. The at least one compressor, the condenser, and the plurality of evaporators are fluidly connected by refrigerant lines to form a refrigerant circuit. The air conditioning system also includes a plurality of shut-off valves, with one shut-off valve installed at a refrigerant inlet and another shut-off valve installed at a refrigerant outlet of the first evaporator. The shut-off valves are controlled to prevent undesired collection of refrigerant in the first evaporator.