It is a two-stage compressed freezer that acts as an up, down, and down with one Comp as a cooling The brine used as a secondary refrigerant can be cooled down to -60°C and circulated in the reaction tank (tank) to minimize the load of the freezer to perform stable cooling functions. In addition, it can be applied to cooling devices such as frozen storage of processed agricultural, water and livestock products, and can also be applied to hydrogen charging stations, gas generating inhibitors, and brine cooling devices for hydrogen vehicles