| 摘要 |
PROBLEM TO BE SOLVED: To make an ejector exert sufficient suction ability regardless of an operating condition, in an ejector type refrigeration cycle in which a supercooled liquid-phase refrigerant is allowed to flow into a nozzle portion of the ejector.SOLUTION: An ejector type refrigeration cycle includes a radiator 12 for making a refrigerant discharged from a compressor 11 radiate heat, an ejector module 13 for decompressing the refrigerant cooled by the radiator 12, and an evaporator 14 for evaporating a liquid-phase refrigerant separated in a gas-liquid separation space 30f of the ejector module 13, and further a grille shutter 16 as inflow pressure raising means is disposed between a cooling fan 12d for sending the outside air toward the radiator 12 and the radiator 12. When an outside air temperature Tam becomes a predetermined reference outside air temperature KTam or less, the grille shutter 16 is operated to reduce an amount of the outside air sent toward the radiator 12, and a pressure of an inflow refrigerant flowing to a nozzle passage 13a side of the ejector module 13 is raised.SELECTED DRAWING: Figure 1 |
