| CPC A47L 11/4091 (2013.01) [A47L 2201/028 (2013.01)] | 18 Claims |

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1. A cleaning robot docking station comprises:
an evaporation equipment, configured to evaporate liquid inside the evaporation equipment and expel a first gas;
a condensation equipment, configured to receive the first gas from the evaporation equipment, condense at least a part of water vapor in the first gas, and expel a second gas;
wherein the first gas is pre-cooled before entering the condensation equipment; and wherein the first gas is pre-cooled by the second gas before entering the condensation equipment.
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