Industrial water chilling unit

The invention relates to the field of air conditioning systems, in particular to an industrial water chilling unit which comprises a shell and a cooling water system arranged in the shell. The cooling water system comprises a refrigerant loop and a cooling water loop; the refrigerant loop comprises a condenser, an electronic expansion valve, an evaporator, a gas-liquid separator and a compressor which are connected into a loop through a refrigerant pipeline, the cooling water loop comprises an evaporator, a cooling pump and a cooling water tank, and the evaporator, the cooling pump and the cooling water tank are connected with a user terminal through a secondary refrigerant pipeline to form a loop; the refrigerant and the cooling water exchange heat in the evaporator; according to the industrial water chilling unit, the internal space arrangement is more reasonable, the cooling pump is arranged at the rear, and water discharging is promoted through potential energy in the cooling water tank, so that the effec