The present invention relates to an engine coolant cooling system for a vehicle, and provides an engine coolant cooling system for a vehicle, which can increase the heat-dissipation performance of a radiator if necessary without increasing the size of the radiator, securing the cooling performance of the coolant.

Embodiments of a refrigerant distributor for a micro-channel heat exchanger (MCHEX) are described. The refrigerant distributor may be configured to have orifices and/or a flow valve that are inside a header of the MCHEX. The MCHEX can be used as an evaporator in a cooling cycle, where refrigerant is distributed into the header(s) through the orifices and the flow valve may be generally in a closed state that generally prevents a refrigerant flow through the flow valve. In a heating cycle, the flow valve of the refrigerant distributor may be configured to be in an open state that allows the refrigerant to flow into the refrigerant distributor and to be directed out of the MCHEX through the refrigerant distributor. In some embodiments, the refrigerant distributor may be configured to receive liquid refrigerant, so as to eliminate the need of an expansion valve in a HVAC system.

A heat exchanger includes a liquid reservoir configured to separate a gas-liquid two-phase refrigerant flowing out of an upstream heat exchanging portion into a gas-phase refrigerant and a liquid-phase refrigerant, and a refrigerant adjustment portion configured to adjust an outflow state and an outflow destination of the refrigerant flowing out of a downstream heat exchanging portion or the liquid reservoir. The liquid reservoir includes a liquid reserving portion configured to store the liquid-phase refrigerant and a gas reserving portion configured to store the gas-phase refrigerant. The refrigerant adjustment portion faces the liquid reserving portion across the gas reserving portion.

The invention relates to the technical field of water-cooling radiators, in particular to an integrated radiator provided with a water chamber, a control panel, and a water pump. The control panel is provided with a port set electrically connected with the control panel. According to the integrated radiator, the water pump assembly is integrated on the cooler through reasonable design, so that the weight of a block is effectively reduced. Meanwhile, wires of a fan and the block are connected to the port set on the control panel to be prevented from being suspended in a case, so that the internal attractiveness of the case is improved; besides, more cooling liquid is contained, so that the service life of the integrated water-cooling radiator is prolonged.

A heat exchanger (10) comprises: a first sub-heat exchanger (100), which has a first manifold (110), a second manifold (120), and at least two heat exchange tubes (130); and a second sub-heat exchanger (200), which has a third manifold (210), a fourth manifold (220), and at least one heat exchange tube (230), at least one of the heat exchange tubes (130) in the first sub-heat exchanger (100) being part of a flow path of the second sub-heat exchanger (200).

An integrated heat exchanger in which a flow path, in which a first heat exchange medium flows, and a flow path, in which a second heat exchange medium flues, are separated by a baffle, and includes a support surface having a slope of which the height lowers toward the outside, and formed at a header portion coming in contact with a gasket baffle sealing part, and the gasket baffle sealing part formed in a shape corresponding to the support surface of a header such that the deformation of a gasket is prevented during coupling; and problems in which the gasket of a coupling part, at which the baffle is positioned, is non-uniformly compressed or the gasket is broken or separated from a designated position by means of force of the other direction is prevented.

A heat exchanger includes a heat-absorbing part, two gas conduits, a return conduit and a condensing part. The heat-absorbing part includes a gas zone and a liquid zone. The heat-absorbing part includes a gas zone and a liquid zone. A first end of each gas conduit is connected with the gas zone of the heat-absorbing part. A first end of the return conduit is connected with the liquid zone of the heat-absorbing part. The condensing part includes a gas-inputting chamber, a liquid-outputting chamber, a partition plate, a communication chamber, a first condenser tube group and a second condenser tube group. The gas-inputting chamber is connected with a second end of each gas conduit. The liquid-outputting chamber is connected with a second end of the return conduit. A loop is defined by the heat-absorbing part, the at least two gas conduits, the return conduit and the condensing part collaboratively.

An integrated liquid-cooled heat dissipation system includes a heat dissipation device, a pumping device, a water reservoir, and a heat absorption device. The heat dissipation device, the pumping device, the water reservoir, and the heat absorption device are integrated as a whole and interconnected with each other, a main body of the heat dissipation device is provided with the pumping device; the water reservoir is integratedly arranged on and connected to the heat dissipation device; and the heat absorption device is arranged on the water reservoir.

A header for a header tank of a heat exchanger comprises a header wall defining a tube receiving portion having a plurality of longitudinally spaced tube openings formed therethrough. The tube receiving portion includes a planar portion and an adjacent offset portion. The planar portion is disposed on a first plane and the offset portion has a variable distance from the first plane as the offset portion extends away from the planar portion with respect to a longitudinal direction of the header.

A heat exchanger has an inflow port through which refrigerant flows, a cooling outflow port through which the refrigerant flows out during a cooling operation, and a heating outflow port through which the refrigerant flows out during a heating operation. A distance between the inflow port and the heating outflow port is shorter than a distance between the inflow port and the cooling outflow port.