Heat exchange device and cooling system thereof

The present invention discloses a heat exchange device and a cooling system thereof. The heat exchange device includes a low-pressure chamber and a high-pressure chamber arranged in the low-pressure chamber. The low-pressure chamber has a first wall for providing heat exchange, and an output portion that communicates with outside to output low-pressure fluid. The high-pressure chamber has an input portion that communicates with outside to introduce high-pressure fluid, and has a plurality of nozzles that communicate with the low-pressure chamber. The fluid flowing out of the nozzle has a pressure drop and exchanges heat through the first wall. In this way, the cooling capacity is established in the heat exchange device, and is also used in the heat exchange device, so that there is no need to configure a transfer pipeline that will cause the loss of cooling capacity between the expansion process and the evaporation process of the fluid. The heat exchange capacity is improved, and cooling efficiency can also b