The present disclosure relates to a thermal management system of gas injection type for a vehicle and, more particularly, to a thermal management system of gas injection type for a vehicle, which can implement various types of heating and cooling modes according to vehicle operating conditions and improve heating efficiency by increasing the flow rate of circulating refrigerant.

Systems and methods for implementing ejector refrigeration cycles with cascaded evaporation stages that utilize a pump to optimize operation of the ejector and eliminate the need for a compressor between the evaporation stages.

An ejector includes a body including an inflow space into which a refrigerant flows, a passage formation member disposed inside the body and having a conical shape, and a nozzle passage having an annular cross section which functions as a nozzle and a diffuser passage having an annular cross section which functions as a pressure increase portion, the nozzle passage and the diffuser passage being disposed between an inner wall surface of the body and a conical lateral surface of the passage formation member. A drive mechanism that displaces the passage formation member in a direction along a center axis is coupled to an upstream actuating bar which extends from the passage formation member toward the inflow space and is slidably supported by the body. Center axes of the passage formation member, the upstream actuating bar and the inflow space are coaxial with each other.

An ejector refrigeration cycle device includes: a decompressor that decompresses a refrigerant heat-exchanged in a radiator; a first exterior heat exchanger that exchanges heat between the refrigerant decompressed by the decompressor and outside air; an ejector that decompresses the refrigerant flowing out of the radiator in a nozzle portion and draws another refrigerant heat-exchanged in the first exterior heat exchanger; a branch portion in which the refrigerant heat-exchanged in the radiator branches to a side of the decompressor and a side of the nozzle portion; a second exterior heat exchanger that exchanges heat between the refrigerant pressurized in the ejector and the outside air; a bypass portion that causes the refrigerant heat-exchanged in the radiator to flow to the first exterior heat exchanger while bypassing the decompressor and the nozzle portion; and an opening/closing portion that opens or closes the bypass portion.

A refrigeration cycle device includes: a first expansion valve that decompresses a refrigerant flowing out of a high-pressure side heat exchanger; an exterior heat exchanger that exchanges heat between the refrigerant flowing out of the first expansion valve and outside air; a second expansion valve that decompresses the refrigerant flowing out of the exterior heat exchanger; a low-pressure side heat exchanger arranged in series with the exterior heat exchanger; a cooler core that exchanges heat between the heat medium cooled by the low-pressure side heat exchanger and air to be blown into a vehicle interior to cool the air; and a controller configured to switch between a heat absorption mode and a heat dissipation mode by adjusting an amount of decompression in each of the first expansion valve and the second expansion valve.

The present disclosure relates to a refrigeration cycle apparatus including an ejector capable of significantly increasing the pressure of sucked refrigerant and flowing out the refrigerant having the increased pressure toward a compressor. The ejector 100 includes a drive refrigerant inlet 111 to allow a first refrigerant evaporated in a first evaporator to be introduced, a suction refrigerant inlet 121 to allow a second refrigerant evaporated in a second evaporator to be introduced, a joining portion 131 to join the first refrigerant introduced from the drive refrigerant inlet 111 and the second refrigerant introduced from the suction refrigerant inlet 121, a nozzle neck portion 113 to throttle a flow passage of the first refrigerant introduced from the drive refrigerant inlet 111, and a nozzle diffuser portion 114 including a cylindrical or conical flow passage upstream of the joining portion 131 to allow the first refrigerant that has passed through the nozzle neck portion 113 to pass therethrough, and an inner angle of the nozzle diffuser portion 114 in a plane passing through a center line C is 0 or more and 12 or less.

An ejector refrigeration cycle includes a compressor, a radiator, a branch portion, an ejector, a suction side decompressor, a windward evaporator, and a leeward evaporator. The ejector includes a nozzle portion and a pressure increasing portion. The windward evaporator and the leeward evaporator include at least one outflow side evaporation portion. The leeward evaporator includes a suction side evaporation portion. An outflow side evaporation temperature is a refrigerant evaporation temperature in the at least one outflow side evaporation portion of the leeward evaporator. A suction side evaporation temperature is a refrigerant evaporation temperature in the suction side evaporation portion of the leeward evaporator. At least one of the nozzle portion or the suction side decompressor is configured to adjust a refrigerant passage area such that a temperature difference between the outflow side evaporation temperature and the suction side evaporation temperature is at or below a predetermined reference temperature difference.

A refrigerant that has flowed out of a liquid ejector radiates heat in a radiator, and a liquid-phase refrigerant that has radiated heat in the radiator flows into an ejection refrigerant passage of the liquid ejector. A discharged refrigerant of a compressor that suctions the refrigerant that has flowed out of a low-pressure evaporator flows into an inflow refrigerant passage of the liquid ejector. An ejector adopted as the liquid ejector is one in which an ejection refrigerant is ejected from the ejection refrigerant passage to a gas-liquid mixing portion, and the ejection refrigerant is ejected on an outer circumferential side of the inflow refrigerant flowing from the inflow refrigerant passage into the gas-liquid mixing portion.

An apparatus (1) for handling and cooling plastic preforms comprising a rotatable handling station (2), provided with a plurality of retaining and cooling pins (3) for preforms and adapted to cooperate with an extraction plate (4) adapted to extract the preforms from an injection mold; an aeraulic circuit (5) connected to said station and comprising an aspiration duct (6) for aspirating air from the inside of the station; a delivery duct (7) for sending air to said station; cooling means (8) arranged along the delivery duct for cooling the air sent to said station; aspiration means (9, 19, 29) connected at least to the aspiration duct and to the delivery duct, and wherein switching means are further provided, to pass from a first circuit configuration, in which there is an air passage from the delivery duct to the inside of the station, to a second circuit configuration in which there is an air passage from the inside of the station to the aspiration duct, whereby, in the first configuration, air is blown by means of the plurality of pins, while, in the second configuration, air is aspirated by means of said plurality of pins.

The present disclosure relates to a thermal management system of gas injection type for a vehicle and, more particularly, to a thermal management system of gas injection type for a vehicle, which can implement various types of heating and cooling modes according to vehicle operating conditions and improve heating efficiency by increasing the flow rate of circulating refrigerant.