Refrigerating circuit and refrigerating device

This refrigeration circuit is provided with: a gas-liquid separator into which a gas-liquid two-phase refrigerant flowing out from a condenser flows and which separates the gas-liquid two-phase refrigerant into a gas-phase refrigerant and a liquid-phase refrigerant; and a plate heat exchanger having a first heat exchange unit for exchanging heat between the gas-phase refrigerant flowing out from the gas-liquid separator and the liquid-phase refrigerant flowing out from the gas-liquid separator, and a second heat exchange unit for exchanging heat between the gas-phase refrigerant and the liquid-phase refrigerant. And a second heat exchange unit that exchanges heat between the gas-phase refrigerant flowing out from the first heat exchange unit and the return refrigerant flowing out from the evaporator. 本发明的制冷回路具备：气液分离器，供从冷凝器流出的气液两相制冷剂流入，并将气液两相制冷剂分离为气相制冷剂与液相制冷剂；以及板式热交换器，具有第一热交换部及第二热交换部，该第一热交换部供从气液分离器流出的气相制冷剂与从气液分离器流出的液相制冷剂进行热交换，该第二热交换部供从第一热交换部流出的气相制冷剂与从蒸发器流出的返回制冷剂进行热交换。