Cooling device for spontaneous combustion prevention

A cooling device for preventing spontaneous combustion of coal stockpiles, the cooling device comprising:

• an outer case having an accommodation space (S) formed therein and having an opening communicating with the accommodation space (S) and a plurality of discharge holes having a predetermined diameter formed on one side thereof;
• an inner case located in the accommodation space (S) and having a storage space (S1) formed therein in which a liquid coolant is compressed and accommodated at a constant pressure;
• a supply valve configured to open and close one side of the inner case to discharge the coolant accommodated in the storage space (S1) to the accommodation space (S) when a temperature reaches a predetermined temperature;
• a backflow prevention valve installed in the discharge hole and configured to open and close the discharge hole to eject the coolant to an outside of the outer case when the coolant is located in the accommodation space (S);
• and
• a control module including:
• a temperature sensor having a portion exposed to the outside of the outer case to measure an external temperature of the outer case;
• and an opening/closing controller configured to control opening and closing of the supply valve and the backflow prevention valve according to a temperature value measured by the temperature sensor.