Central air conditioner shell non-riser casting structure

The utility model discloses a central air conditioner shell non-riser casting structure which comprises a central air conditioner shell casting mould cavity. An upper sand mould and a lower sand mould are assembled to form the central air conditioner shell casting mould cavity. The upper sand mould comprises a low pressure area, the lower sand mould comprises a high pressure area, first chilling blocks are uniformly arranged in the upper sand mould of a low pressure area casting mould cavity, second chilling blocks are uniformly arranged in the lower sand mould of a high pressure area casting mould cavity, and a central casting system is arranged in the upper sand mould and the lower sand mould and comprises a sprue, a cross gate and ingates. By the aid of the central casting system, the high pressure area of a casting is placed on the lower sand mould, feeding is strengthened by the aid of the gravity of iron liquid, the chilling blocks are respectively arranged on the thick wall of a thermal center of the c