To combine storage of sufficiently-cooled brine in a cold accumulator and improvement of cooling efficiency in a brine-type cooling device comprising the cold accumulator.
A heat exchange region of a refrigerant-brine heat exchanger 27 is divided into two regions, a first evaporating portion 28a for evaporating a refrigerant flowing out from a diffuser portion 25d of an ejector 25 is disposed in the first heat exchange region 27a, and a second evaporating portion 28b sucked to a refrigerant suction port 25b of the ejector 25 is disposed in the second heat exchange region 27b. Further the brine cooled by the second heat exchange region 27b is stored in a heat storage tank 35. Thus the air-conditioning of a cabin can be performed by the brine cooled in the first heat exchange region 27a without unnecessarily lowering a refrigerant evaporation temperature in the first evaporating portion 28a. Further the brine cooled in the second heat exchange region 27b and having a temperature lower than the brine cooled in the first heat exchange region 27a can be stored in the heat storage tank 35.
YAMANAKA TAKASHI
Takahiro Miura
Fumihiro Mizuno