A thermal management system for a passenger cabin of a hybrid vehicle includes a refrigerant loop in fluid communication with a compressor, a condenser, and a chiller. A main cabin evaporator is in fluid communication with the refrigerant loop. A first valve is configured to regulate refrigerant flow through the main cabin evaporator. A temperature sensor disposed at the main cabin evaporator is configured to output a signal indicative of a main cabin evaporator temperature. An auxiliary evaporator is in fluid communication with the refrigerant loop. A second valve is configured to regulate refrigerant flow through the auxiliary evaporator. A controller is programmed to, in response to the main cabin evaporator temperature being less than a threshold while the main cabin evaporator is operated with the second valve closed, open the second valve to cycle refrigerant through the auxiliary evaporator to increase the main cabin evaporator temperature.

A valve device includes a housing integrally or separately having a flow path formation part where at least one flow path hole through which a fluid passes is formed. The valve device includes: a drive part that outputs a rotational force; and a rotation part that rotates about a predetermined axis by the rotational force output from the drive part. The rotation part includes a shaft and a rotor increasing or decreasing an opening degree of the flow path hole with rotation of the shaft. The rotor has a sliding surface that slides while facing an opening surface of the flow path formation part where the flow path hole is opened. At least a part of the rotation part is rotatably held by the housing.

A valve device includes a flow path formation member provided with at least one flow path hole through which a fluid passes, and a drive part that outputs a rotational force. The valve device includes a shaft, and a rotor having a sliding surface that slides while facing an opening surface of the flow path formation member where the flow path hole is opened, and the rotor is configured to increase or decrease an opening degree of the flow path hole with rotation of the shaft. The valve device includes an energization member that energizes the rotor toward the flow path formation member. The valve device includes a coupling structure configured to tiltably couple the shaft to the rotor such that a contact state between the sliding surface and the opening surface is held regardless of a posture or a position of the shaft.

A thermal management system for a vehicle may include a cooling apparatus of circulating a coolant in a coolant line to cool at least one electrical component provided in the coolant line; a battery cooling apparatus of circulating the coolant to the battery module; a chiller for heat exchanging the coolant with a refrigerant to control a temperature of the coolant; a heater that heats an interior of the vehicle using the coolant; and a branch line; wherein a condenser included in the air conditioner is connected to the coolant line to pass the coolant circulating through the cooling apparatus.

A vehicular heat management system is provided with a heat pump type refrigerant circulation line that cools and heats specific air conditioning regions by generating a hot air or a cold air depending on a flow direction of a refrigerant. The system includes a compressor configured to suck, compress and discharge the refrigerant, a high-pressure side heat exchanger configured to dissipate heat of the refrigerant discharged from the compressor, an outdoor heat exchanger configured to allow the refrigerant to exchange heat with an air outside the vehicle, an expansion valve configured to depressurize the refrigerant flowing out of the high-pressure side heat exchanger or the outdoor heat exchanger, and one or more low-pressure side heat exchangers configured to evaporate the depressurized refrigerant. The outdoor heat exchanger and the low-pressure side heat exchangers are connected in series or in parallel depending on an air conditioning mode.

A thermal management system includes a refrigerant loop system that includes a compressor, a refrigerant four-way reversing valve, a plate heat exchanger, a throttle valve, another plate heat exchanger, and a gas-liquid separator, to form a refrigerant loop, and a motor liquid cooling loop system includes a motor liquid cooling loop that circulates coolant through a motor, and a pipe in the motor liquid cooling loop is connected to a liquid cooling channel in the plate heat exchanger to exchange heat with the refrigerant loop system using the plate heat exchanger.

A thermal management system for a vehicle may include a cooling apparatus configured to include a radiator, a first water pump, a first valve, and a reservoir tank to circulate a coolant in the coolant line to cool at least one electrical component provided in the coolant line; a battery cooling apparatus including a battery coolant line connected to the coolant line through a second valve, and a second water pump and a battery module which are connected through the battery coolant line; a chiller provided in the battery coolant line between the second valve and the battery module, and connected to a refrigerant line of an air conditioner; and a heating circuit including a heater which is connected to the coolant line and the chiller through first and second connection lines to supply a coolant having a temperature which is increased while passing through the at least one electrical component.

The invention relates to an air-conditioning device for a motor vehicle, comprising a refrigerant circuit (100) including a compressor (34), an indoor heat-exchanger (WÜ) arrangement connected to the outlet of the compressor and comprising a first and a second air/refrigerant-heat exchanger segment (21, 22), a first expansion valve (Exp. valve) (41) arranged therebetween, a second expansion valve (42), and a coupling heat exchanger (23) thermally connected to a heat source or sink, the outlet of which is connected to the inlet of the compressor (34), where the first and the second refrigerant line sections (I/II) are interconnected by means of a fourth refrigerant line section (IV), the inlet of the second air/refrigerant-heat exchanger segment (22) and the outlet of the coupling heat exchanger are interconnected by means of a fifth refrigerant line section (V) which contains a third expansion valve (43), and the outlet of the first air/refrigerant-heat exchanger segment (21) and the inlet of the compressor (34) are interconnected by means of a sixth refrigerant line section (VI).

A double 6-way valve for a vehicle cooling system provides various modes, reduces the number of parts of the cooling system, and improves packaging, compared to a conventional cooling system. The double 6-way valve includes: an upper housing including a plurality of upper nipples disposed at equal intervals on an outer circumference surface thereof; a lower housing stacked under the upper housing and including a plurality of lower nipples disposed at equal intervals on an outer circumference surface thereof; an upper hub rotatably mounted within the upper housing; a lower hub rotatably mounted within the lower housing and stacked under the upper hub; and a driving apparatus to rotate the upper hub and the lower hub.

The present invention provides a vapor injection module and a heat pump system using the same, the vapor injection module including an expansion valve configured to allow a condensed refrigerant to pass therethrough or expand a condensed refrigerant in accordance with an air conditioning mode, and a gas-liquid separator configured to receive the refrigerant from the expansion valve and separate the refrigerant into a gaseous refrigerant and a liquid refrigerant, in which the expansion valve has a plurality of expansion regions and performs operations of allowing the refrigerant to pass therethrough, performing first-stage expansion on the refrigerant, or performing second-stage expansion on the refrigerant in accordance with arrangement positions of the expansion regions.