The invention provides: a heat exchanger that improves heating performance by improving both pressure loss and heat-absorption loss at the time of refrigerant circulation during heating, and in which the heat exchanger and the refrigerant circuit in which said heat exchanger is incorporated are simplified; and a heat pump system that achieves highly energy-efficient defrosting operation by using said heat exchanger. This heat exchanger comprises: a main core part (6) that exchanges heat between air and a refrigerant; a receiver tank (8) into which the refrigerant that has circulated in the main core part flows; a subcool core part (10) that subjects the liquid refrigerant that has circulated in the receiver tank to supercooling by exchanging heat with air; a first flow path (36b, 68, 78) that makes the refrigerant circulate in the order of the main core part, the receiver tank, and the subcool core part; a second flow path (36a, 36c, 68, 72) that makes the refrigerant circulate in the order of the main core part and the subcool core part while bypassing the receiver tank; and a flow path switching means (82) that switches between the first flow path and the second flow path.
Heat exchanger and heat pump system using same
12.08.2015
Patent
Elektronische Ressource
Englisch
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht / F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / F28F Einzelheiten von Wärmetauschern oder Wärmeübertragungsvorrichtungen für allgemeine Verwendung , DETAILS OF HEAT-EXCHANGE OR HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION |