A chiller is a type of water cooling equipment that can provide constant temperature, constant current, and constant pressure cooling water. The working principle is to first inject a certain amount of water into the internal water tank of the machine, cool the water through the refrigeration system, and then send the low-temperature cooling water to the equipment that needs to be cooled by the water pump. The chilled water takes away the heat and rises in temperature before flowing back to the water tank, achieving the cooling effect.