An air handling assembly, comprising: a cyclonic chamber being provided with two axial ends as a first end and a second end, the cyclonic chamber being provided with a dirty air inlet (S1a), a clean air outlet (S1b) and a dust fall opening (S1c), the clean air outlet (S1b) being arranged on an end face of the first end, the dust fall opening (S1c) being arranged at the second end, and the dirty air inlet (S1a) being arranged between the clean air outlet (S1b) and the dust fall opening (S1c); a cyclonic cone arranged in the cyclonic chamber and being provided with two axial ends as a third end and a fourth end, the third end and the fourth end being arranged sequentially along a direction from the first end to the second end, the cyclonic cone being provided with an airflow passage within the cyclonic cone, the cyclonic cone being provided with an air intake of the airflow passage on a side wall of the cyclonic cone, the third end being coupled to the first end and communicating the airflow passage with the clean air outlet (S1b), the fourth end being closed and spaced apart from the second end; a dust collection chamber located outside the cyclonic chamber and being in communication with the dust fall opening (S1c); and an exhaust chamber located outside the cyclonic chamber and being in communication with the clean air outlet (S1b), the exhaust chamber being isolated from the dust collection chamber, characterized in that: an axis of the cyclonic chamber extends transversely, and the exhaust chamber extends transversely; an inlet of the exhaust chamber extending to the first end, an outlet of the exhaust chamber extending to the second end. a cyclonic chamber being provided with two axial ends as a first end and a second end, the cyclonic chamber being provided with a dirty air inlet (S1a), a clean air outlet (S1b) and a dust fall opening (S1c), the clean air outlet (S1b) being arranged on an end face of the first end, the dust fall opening (S1c) being arranged at the second end, and the dirty air inlet (S1a) being arranged between the clean air outlet (S1b) and the dust fall opening (S1c); a cyclonic cone arranged in the cyclonic chamber and being provided with two axial ends as a third end and a fourth end, the third end and the fourth end being arranged sequentially along a direction from the first end to the second end, the cyclonic cone being provided with an airflow passage within the cyclonic cone, the cyclonic cone being provided with an air intake of the airflow passage on a side wall of the cyclonic cone, the third end being coupled to the first end and communicating the airflow passage with the clean air outlet (S1b), the fourth end being closed and spaced apart from the second end; a dust collection chamber located outside the cyclonic chamber and being in communication with the dust fall opening (S1c); and an exhaust chamber located outside the cyclonic chamber and being in communication with the clean air outlet (S1b), the exhaust chamber being isolated from the dust collection chamber, characterized in that: an axis of the cyclonic chamber extends transversely, and the exhaust chamber extends transversely; an inlet of the exhaust chamber extending to the first end, an outlet of the exhaust chamber extending to the second end. an axis of the cyclonic chamber extends transversely, and the exhaust chamber extends transversely; an inlet of the exhaust chamber extending to the first end, an outlet of the exhaust chamber extending to the second end.