An air-conditioning unit includes an air-conditioning case and a heat exchanger. The heat exchanger includes a plurality of tubes and a header tank. The air-conditioning case includes a holder in which the header tank is held while being inserted therein. The holder includes a first rib and a plurality of second ribs for pressing a tank outer wall of the header tank toward an internal space of the header tank. The first rib extends in a tube stacking direction. The plurality of second ribs are each connected to the first rib, are formed to extend from the first rib away from the tubes, and are arranged side by side at a predetermined inter-rib spacing in the tube stacking direction. The inter-rib spacing is larger than a length of the second ribs extending from the first rib away from the tubes in a tube longitudinal direction.

An integrated heat exchanger assembly comprises a first header tank, a second header tank, a first heat exchanger core extending between the first header tank and the second header tank, a second heat exchanger core extending between the first header tank and the second header tank, and a third heat exchanger core extending between the first header tank and the second header tank. The first heat exchanger core is in fluid communication with a liquid coolant and a refrigerant, the second heat exchanger core in fluid communication with a first portion of a flow of air and the refrigerant, and the third heat exchanger core in fluid communication with a second portion of the flow of the air and the liquid coolant.

A roof-type air conditioner for vehicles may include an evaporator to discharge cold air to the internal of a vehicle, and a conveying unit to move the evaporator in a longitudinal direction of the vehicle on a ceiling of the vehicle such that the evaporator is disposed to the ceiling of the internal of the vehicle and positioned to a region required for cooling.

A heat exchanger includes a heat exchanging portion, a reservoir that performs gas-liquid separation on a gas-liquid two-phase refrigerant that flows out from the heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant and stores the liquid-phase refrigerant, and an inflow passage that allows the gas-liquid two-phase refrigerant flowing out from the heat exchanging portion to flow into the reservoir. The inflow passage is connected so as to be in communication with an inlet port of the reservoir which is disposed above a liquid surface of the liquid-phase refrigerant stored in the reservoir.

The present disclosure discloses a header box and a heat exchanger. The header box includes a cover plate and a bottom plate. The cover plate is provided with a groove extending along a length direction of the cover plate. The groove includes an opening portion. The bottom plate is provided with a number of openings for inserting flat tubes. The opening extends through an upper surface and a lower surface of the bottom plate. The opening includes a first opening close to the cover plate and a second opening away from the cover plate. A cross-sectional area of the first opening is larger than a cross-sectional area of the second opening. The opening portion of the groove is provided toward the bottom plate. As a result, high pressure resistant performance of the header box and the heat exchanger can be achieved.

A heat pump system for a vehicle may adjust a temperature of a battery module by use of one chiller that performs heat exchange between a refrigerant and a coolant and improve heating efficiency by use of waste heat generated from an electrical component and the battery module, and increase the flow rate of the refrigerant by applying the gas injection unit operates in the heating mode or the heating/dehumidification mode of the vehicle, reducing power consumption of the first compressor and maximizing heating performance.

An evaporator with a cold storage function includes: a plurality of refrigerant tubes which have refrigerant flow paths and which are disposed in parallel with an interval therebetween; and a cold storage material container sandwiched and bonded between adjacent refrigerant tubes among a plurality of the refrigerant tubes and to be filled with a cold storage material, wherein the cold storage material container is formed by superimposing a pair of cold storage plates, each of which includes accommodating concavities to be filled with the cold storage material, and a plurality of convexities are formed with an interval therebetween in standing walls of the accommodating concavities of each of the cold storage plates.

A storage evaporator for an air conditioning system in a vehicle is provided that includes phase change material-containing tubes arranged side-by-side in contact with refrigerant-containing tubes. The storage evaporator includes an upper coolant tank, a lower coolant tank, refrigerant-containing tubes fluidly connecting said tanks, and phase change material-containing tubes provided in contact with said refrigerant tubes. The refrigerant tubes have flat sides and the phase change material-containing tubes have flat sides. The flat sides of the refrigerant tubes are attached to the flat sides of said phase change material-containing tubes. The phase change material may be any of several materials and may an eutectic, a salt hydrate, and an organic material. In operation, cold energy is stored in the phase change material when the air conditioning compressor is in its On position. This cold energy is released from the phase change material when the compressor is in its Off position.

A refrigeration cycle device includes an exterior heat exchanger that includes a core portion including a stack of a plurality of tubes. The core portion has a first core portion, a second core portion and a third core portion each of which includes a tube group of the plurality of tubes. A flow direction of a refrigerant flowing through the second core portion in a heating operation is opposite to that in a cooling operation. Flow directions of the refrigerant flowing through the first core portion and the third core portion in the heating operation are same as those in the cooling operation.

An accumulator in combination with an internal heat exchanger in a shared housing, the accumulator including a cyclone for separation of the gas and liquid phase of a refrigerant, wherein the cyclone includes two separate, curved flow paths, one of which leads from an inlet on the cover side whose direction of flow is closer to the axial than the radial direction of the cyclone into the accumulator and radially outwards, and the other of which leads outwards from an end facing away from the cover.