Energy-saving equipment for cooling case and cooling method of energy-saving equipment

The invention relates to the technical field of cases, and particularly discloses energy-saving equipment for cooling a case and a cooling method of the energy-saving equipment. The energy saving equipment is characterized in that a partition plate is arranged on the lower side in the case, the partition plate divides the case into an upper space and a lower space, a water suction pump is arrangedon the upper end face of the partition plate, the output end of the water suction pump is connected with a cooling liquid flowing pipeline, the pipeline is attached to the inner surface of the case and surrounds the inner top surface of the case in an S-shaped mode, the other end of the pipeline penetrates through the partition plate and extends to the lower space, a cooling box is arranged in the middle of the lower space and comprises a cold water tank and a hot water tank which are arranged up and down, a one-way valve is arranged on the left side of the lower space, one end of the one-wayvalve is connected with t