Air cleaner

Patent metadata

Field	Value
Publication number	US-12290775-B2
Application number	US-202117371697-A
Country	US
Kind code	B2
Filing date	Jul 9, 2021
Priority date	Jul 10, 2020
Publication date	May 6, 2025
Grant date	May 6, 2025

Abstract

An air cleaner includes a first blowing device having a first inlet and a first outlet, a second blowing device disposed above the first blowing device and having a second inlet, and a partition plate disposed between the first outlet and the second blowing device. The first blowing device includes a case forming the first inlet and opened in an upper side, a discharge guide device disposed in the opened upper side of the case and forming the first outlet, a first fan disposed inside the case and forming an air flow from the first inlet to the first outlet, and a splitter disposed between the partition plate and a discharge guide device and extending upward from the discharge guide device in a radial direction of the discharge guide device to separate an air flow discharged from the first outlet and guide the air flow in the radially outward direction.

First claim

What is claimed is:

1. An air cleaner comprising:
a first blowing device having (i) a first inlet defined at a lower part thereof and (ii) a first outlet defined at an upper surface thereof, the first outlet extending in a circumferential direction;
a second blowing device disposed above the first blowing device, the second blowing device having a second inlet defined at a lower part thereof; and
a partition plate disposed between the first outlet and the second blowing device and configured to guide air discharged from the first outlet to flow in a radially outward direction,
wherein the first blowing device comprises:
a case that defines the first inlet and that is open at an upper side,
a discharge guide device that is disposed in the open upper side of the case and that defines the first outlet in the circumferential direction, the discharge guide device comprising a plurality of discharge grilles that define a plurality of the first outlets in the circumferential direction,
a first fan disposed inside of the case and configured to generate an air flow from the first inlet to the first outlet, and
a splitter that is disposed between the partition plate and the discharge guide device and that extends upward from the discharge guide device in a radial direction of the discharge guide device, the splitter being configured to separate an air flow discharged from the first outlet and to guide the air flow discharged from the first outlet in the radially outward direction,

wherein the splitter has a first end that is inserted between the plurality of the discharge grilles, the splitter comprising a concave-convex portion that is disposed at the first end of the splitter, that is concave at a portion corresponding to the plurality of discharge grilles, and that is convex at a portion corresponding to the first outlet, and
wherein the discharge guide device comprises:
a body inner wall that defines an inner circumferential surface of the discharge guide device,
a body outer wall that defines an outer circumferential surface of the discharge guide device, the body outer wall defining the first outlet between the body inner wall and the body outer wall, and
a groove portion that is provided between the body outer wall and the body inner wall and that partitions grooves into which the concave-convex portion is inserted.

2. The air cleaner of claim 1 ,
wherein the first end of the splitter is positioned between the body inner wall and the body outer wall.

3. The air cleaner of claim 2 , wherein the first end of the splitter extends in the circumferential direction to form a ring shape.

4. The air cleaner of claim 1 , wherein a first virtual line is defined along an outer circumferential end of the first outlet in an up-down direction, and
wherein a second end of the splitter extends to an outside of the first virtual line in the radial direction of the discharge guide device.

5. The air cleaner of claim 4 , wherein a third virtual line is defined along the outer circumferential surface of the discharge guide device in the up-down direction, and
wherein the second end of the splitter extends to the third virtual line in the radial direction of the discharge guide device.

6. The air cleaner of claim 4 , wherein the second end of the splitter is positioned between an outer circumferential end of the partition plate and an outer circumferential end of the discharge guide device.

7. The air cleaner of claim 1 , wherein the splitter comprises a curved portion that is rounded upward.

8. The air cleaner of claim 7 , wherein the splitter comprises a flat portion extending horizontally in the radially outward direction from the curved portion of the splitter.

9. The air cleaner of claim 7 , wherein the partition plate comprises a curved portion that is rounded upward, and
wherein a curvature of the curved portion of the splitter is greater than a curvature of the curved portion of the partition plate.

10. The air cleaner of claim 1 , wherein the partition plate is rounded upward from the inner circumferential surface of the discharge guide device and extends in the radially outward direction of the discharge guide device.

11. The air cleaner of claim 10 , wherein a third virtual line is defined along the outer circumferential surface of the discharge guide device in an up-down direction, and
wherein the partition plate extends to an outside of the third virtual line in the radial direction of the discharge guide device.

12. The air cleaner of claim 10 , wherein the partition plate extends in the radially outward direction to an outside of a lower circumferential surface of the second blowing device.

13. The air cleaner of claim 11 , wherein an outer circumferential end of the partition plate is bent downward.

14. The air cleaner of claim 12 , wherein an outer circumferential end of the partition plate is bent downward.

15. The air cleaner of claim 1 , wherein a flow rate of air between the splitter and the outer circumferential surface of the discharge guide device is greater than a flow rate of air between the splitter and the partition plate.

16. The air cleaner of claim 1 , wherein the first fan is a centrifugal fan that allows air to flow obliquely in the radially outward direction toward an upward direction.

17. An air cleaner comprising:
a first blowing device having a first inlet defined in a lower circumferential surface thereof and a first outlet defined in an upper surface thereof in a circumferential direction;
a second blowing device disposed above the first blowing device, the second blowing device having a second inlet defined in a lower circumferential surface thereof; and
a partition plate disposed between the first outlet and the second blowing device and configured to guide air discharged from the first outlet to flow in a radially outward direction,
wherein the first blowing device comprises:
a case that defines the first inlet and that is open in an upper side,
a discharge guide device that is disposed in the open upper side of the case and that defines the first outlet in the circumferential direction,
a first fan disposed inside of the case and configured to generate an air flow from the first inlet to the first outlet, and
a splitter that is disposed between the partition plate and the discharge guide device and that extends upward from the discharge guide device in a radial direction of the discharge guide device, the splitter being configured to separate an air flow discharged from the first outlet and to guide the air flow discharged from the first outlet in the radially outward direction, and

wherein an outer circumferential end of the partition plate is bent downward.

18. The air cleaner of claim 17 , wherein the partition plate is rounded upward from an inner circumferential surface of the discharge guide device and extends in the radially outward direction of the discharge guide device.

19. The air cleaner of claim 18 , wherein a virtual line is defined along an outer circumferential surface of the discharge guide device in an up-down direction, and
wherein the partition plate extends to an outside of the virtual line in the radial direction of the discharge guide device.

20. The air cleaner of claim 18 , wherein the partition plate extends in the radially outward direction to an outside of the lower circumferential surface of the second blowing device.

Assignees

• Lg Electronics Inc

Inventors

• Yang Taeman
• Min Junho
• Park Joonmin
• Chung Choonmyun

Classifications

• B01D2273/30

  Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan · CPC title

• B01D46/2403

  characterised by the physical shape or structure of the filtering element · CPC title

• B01D46/60

  arranged concentrically or coaxially · CPC title

• F24F2221/12

  transportable · CPC title

• F24F7/007

  with forced flow (using ducting systems F24F7/06) · CPC title