IP Library › Granted Patent US 12,736,251
Granted Patent B2
US 12,736,251 · App. 18/377,447 · Granted Sep 15, 2026

Air purifier

Inventors: Bohyun Kim (Seoul, KR); Juhyup Yoon (Seoul, KR); Taesan Kim (Seoul, KR); Dongeun Kim (Seoul, KR); Jaewan Lee (Seoul, KR)
Assignee: LG ELECTRONICS INC.
F24F13/20F24F8/108
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Quick Facts
Patent No.
US 12,736,251
App. No.
18/377,447
Granted
Sep 15, 2026
Kind
B2
Abstract

An air purifier includes a first body having an inlet formed in a circumferential surface and an outlet formed above the inlet; a fan rotatably disposed between the inlet and the outlet to form an air flow from the inlet to the outlet; a filter for removing foreign substances in air flowing into the inlet; and a second body disposed above the first body and guiding air discharged from the outlet radially outward. The second body includes: a lower cover fixedly disposed at the first body and extending radially outward in an upward direction from the outlet to guide the air discharged from the outlet; and a top cover detachably disposed above the lower cover and forming a flat surface. A protrusion is formed in a bottom surface of the lower cover and protruding downward.

Claims (43)

1 . An air purifier comprising:

a first body having an inlet, an outlet formed above the inlet, and a fan configured to form an air flow from the inlet to the outlet; and

a second body provided above the first body,

wherein the second body includes:

a first cover coupled to the first body and including a bottom surface that extends radially outward in an upward direction from the outlet to guide air discharged from the outlet; and

a second cover detachably provided above the first cover and forming a flat upper surface of the second body,

wherein a protrusion extending downward is formed in the bottom surface of the first cover, and

wherein:

the outlet is formed in a top surface of the first body, and

the protrusion is spaced apart radially from an outer circumference of the outlet.

2 . The air purifier of claim 1 , wherein the protrusion extends along the bottom surface of the first cover in a circumferential direction.

3 . The air purifier of claim 1 , wherein the protrusion protrudes radially outward and downward from the first cover.

4 . The air purifier of claim 1 , wherein a lower end of the protrusion is positioned radially outward from the outlet.

5 . The air purifier of claim 1 , wherein:

the second cover includes

a cover plate positioned above the first cover, and

a peripheral wall extending downward from an outer circumference of the cover plate, and

the peripheral wall is provided at an outer circumference of the first cover.

6 . The air purifier of claim 5 , wherein the protrusion is spaced radially inward from the peripheral wall.

7 . The air purifier of claim 5 , wherein a thickness of the peripheral wall increases from an upper side of the peripheral wall to a lower side of the peripheral wall.

8 . The air purifier of claim 5 , wherein the peripheral wall extends radially outward between an upper side of the peripheral wall to a lower side of the peripheral wall.

9 . The air purifier of claim 5 , wherein the second cover includes an inner protrusion protruding from a lower end of the peripheral wall and in a direction toward the first cover.

10 . The air purifier of claim 9 , wherein:

the first cover includes:

an insertion post configured to be inserted into the first body;

a guide wall positioned above the insertion post and extending outward from the insertion post in an upward direction to define the bottom surface of the first cover; and

an edge rib protruding upward from a perimeter of the guide wall, and

the peripheral wall is provided at an outer circumference of the edge rib.

11 . The air purifier of claim 10 , wherein a fixing groove recessed inward and configured to accommodate the inner protrusion is formed on a side of the edge rib.

12 . The air purifier of claim 1 , wherein:

the second body includes a third cover provided between the first cover and the second cover, and

a mounting hole into which a part of the third cover is inserted is formed in the second cover.

13 . The air purifier of claim 12 , wherein a groove recessed downward and configured to receive a liquid is provided in the third cover.

14 . The air purifier of claim 13 , wherein a height of a top surface of the third cover decreases radially inward.

15 . The air purifier of claim 1 , wherein:

the first cover includes a button that is provided on the bottom surface of the first cover, and

the protrusion is positioned between the button and a perimeter of the first cover.

16 . The air purifier of claim 1 , wherein:

the first cover includes a latch that is configured to be movable by a user to selectively couple the first cover and the second cover, and

the protrusion is positioned between the outlet and the latch.

17 . The air purifier of claim 1 , wherein:

the first cover includes a latch that is configured to be movable by a user to selectively couple the first cover and the second cover, and

the protrusion is positioned between the latch and a perimeter of the first cover.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 27, 2026
From: KIM, BOHYUN; YOON, JUHYUP; KIM, TAESAN; KIM, DONGEUN; LEE, JAEWAN
To: LG ELECTRONICS INC.
Reel/Frame 075406/0456 →
Priority Claims (1)
KR 10-2022-0128429 · Oct 7, 2022 · national
Continuity (1)
Related Publication 20240117993A1 · Apr 11, 2024
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