Patent ID: 9681788
Date: 2017-06-20
CPC Classifications: A47L,B01D

Claim:
1. A dust filter comprising an air inlet, a liquid container comprising a bottom surface and a peripheral wall and defining a first reservoir for holding a cleansing liquid bath to facilitate liquid cleansing of dusted air and a second reservoir for receiving and storing cleansing liquid that moves away from said first reservoir in response to tilting of said dust filter, an inlet duct extending from the air inlet to inside the liquid bath, and an air outlet at a top end of the liquid container for liquid cleansed air to egress from said liquid bath; wherein the bottom surface of the liquid container cooperates with a first axial portion of the peripheral wall to define the first reservoir and the second reservoir is defined on a second axial portion of the peripheral wall which is above the first axial portion of the peripheral wall; wherein the peripheral wall flares or spreads outwardly on projecting upwardly away from the first reservoir and then converges to narrow as it extends towards the top end of the liquid container to define the second reservoir; and wherein said air inlet, said air outlet and said air inlet duct collectively form a detachable assembly which is removable from a top end of said dust filter.