Cleaner

A cleaner comprising:

• a housing having a hollow cylinder shape;
• a barrier for dividing an inner space of the housing into an upper space and a lower space;
• a barrier through-hole provided to pass through the barrier such that the upper space and the lower space are communicated with each other;
• an intake unit provided on a circumferential surface of the housing to communicate the lower space with the outside of the housing;
• a housing through-hole to communicate the upper space with the outside of the housing;
• an upper cover provided in the housing to open or close the housing through-hole;
• an exhaust unit provided to pass through the upper cover to discharge the air inside the upper space to the outside of the housing;
• a fan comprising a case provided in the upper space, a case intake port provided on one surface of the case headed for the barrier through-hole to allow the air to enter the case, a case exhaust port provided on one surface of the case headed for the exhaust unit to discharge the air inside the case, and an impeller rotatably provided inside the case;
• and
• a particle separator provided in the lower space, providing a path that guides the air entering the intake unit to the barrier through-hole and separate particles from the air by a centrifugal force.