Cascadable air purifier

A cascadable air purifier, comprising:

• a housing unit including a hollow base, a plurality of vent holes formed on an outer wall surface of the hollow base, a partition plate disposed in the hollow base, a wind hole formed on the partition plate, and an upper cover combined on a top of the hollow base;
• a connecting unit including a male coupling portion formed on the housing unit, a female coupling portion formed on the housing unit and configured to connect with a male coupling portion of a connecting unit of at least one to-be-connected cascadable air purifier with the same type, a power/signal receiving terminal formed on the housing unit, and a power/signal output terminal formed on the housing unit and configured to electrically connect to a power/signal receiving terminal of the to-be-connected cascadable air purifier;
• a purifying unit including a fan disposed in the hollow base and located at one side of the wind hole, and a filter assembly disposed on the partition plate and located at the other side of the wind hole;
• and
• a control unit including a power switch controller electrically connected to the purifying unit, the power/signal receiving terminal and the power/signal output terminal, and a power source electrically connected to the power switch controller.