Patent ID: 11865485
Assignee: LG ELECTRONICS INC.
Field: Chemical engineering (Chemistry)
Classification: CPC B  A | IPC A  B

Claim 8:
9. The air cleaner of claim 7,
wherein a roller assembly is provided at a top of the filter cartridge to further unwind the filter sheet from the filter roller and guide the first section of the filter sheet through the roller assembly in a direction away from the grill, the roller assembly including:
a first roller extending in the left-right direction;
a second roller provided above the first roller and configured to engage with the first roller such that, when the first roller is rotated in a first rotational direction, the second roller is rotated in a second rotational direction opposite to the first rotational direction; and
a motor configured to rotate the first roller,

wherein the first section of the filter sheet is fed between the first and second rollers such that, when the motor rotates the first roller, the first section of the filter sheet is moved in a direction away from the grill, and a second section of the filter sheet is unwound from the filter roller to extend in the vertical direction between the filter roller and the top of the case so as to cover an intake of the fan and be exposed through the front opening.