Patent ID: 8002015

Claim:
A cooling system for a low pressure casting device that comprises an upper mold provided with a core portion of a spark plug and an upper die, a lower mold provided with a mold portion of a combustion chamber and a lower die, and side molds, the cooling system comprising: a liquid coolant supply unit connected respectively to the core portion of the spark plug, the upper die, the mold portion of the combustion chamber, and the lower die through coolant supply lines, the coolant supply lines having a first coolant supply line for supplying coolant to a coolant space of the upper die, a second coolant supply line for supplying coolant to a cooling space of the core portion of the spark plug, a third coolant supply line for supplying coolant to a cooling space of the lower die, and a forth coolant supply for supplying coolant to a cooling space of the mold portion of the combustion chamber; a cooling air supply unit connected respectively to the side molds and the mold portion of the combustion chamber through air supply lines, the air supply lines having a first air supply line for supplying compressed air to a cooling space of the side molds, a second air supply line for supplying compressed air to the cooling of the combustion chamber, a third air supply line for supplying compressed air to the cooling space of the core portion of the upper die, a fourth air supply line for supplying compressed air to the cooling space of the core portion of the spark plug, and a fifth air supply line for supplying compressed air to the cooling space of the lower die: and a vacuum intake unit connected respectively to the core portion of the spark plug, the upper die, the mold portion of the combustion chamber, and the lower die through vacuum intake lines.