Air purifier, air purifying system, and method of controlling air purifying system

Patent metadata

Field	Value
Publication number	US-11623173-B2
Application number	US-202016821124-A
Country	US
Kind code	B2
Filing date	Mar 17, 2020
Priority date	Mar 19, 2019
Publication date	Apr 11, 2023
Grant date	Apr 11, 2023

Abstract

A handheld air purifier may include a suction body provided with a fan to suction air and a filter to filter foreign matter from the sucked air, a handle extending from the suction body, and an agitator provided in the suction body to loosen or scatter dust from a garment. The handheld air purifier may be configured to be attached to and detached from a main air purifier, and the main air purifier may suction dust off the handheld air purifier and sterilize the handheld air purifier when the handheld air purifier is mounted on the main air purifier. The agitator of the handheld air purifier may have a striking member exposed through a lower surface of the suction body, and may move out of and into the suction body to strike the garment so that the dust may be loosened and suctioned into the suction body and filtered by the filter.

First claim

What is claimed is:

1. An air purifier, comprising:
a case having a lower surface;
a plurality of openings provided on a first area of the lower surface of the case;
a handle extending from the case;
a fan provided inside the case and configured to suction air through at least one inlet and discharge air through an outlet, the at least one inlet including the plurality of openings;
a filter provided in the case and adjacent to the first area; and
an agitator exposed through the lower surface of the case, wherein the agitator is configured to move out of and into the case to strike a surface provided below the case.

2. The air purifier of claim 1 , wherein the agitator is pivoted by air suctioned into the case.

3. The air purifier of claim 1 , wherein the lower surface of the case has a triangular shape.

4. The air purifier of claim 3 , wherein the lower surface of the case has one vertex at a first side of the case from which the handle extends, and the lower surface of the case has two vertices at a second side of the case opposite the first side.

5. The air purifier of claim 4 , wherein an angle of the two vertices at the second side is larger than an angle of the vertex at the first side.

6. The air purifier of claim 5 , wherein the angles of the vertices at the first and second sides are less than 90 degrees.

7. The air purifier of claim 1 , wherein the at least one inlet includes an inlet hole provided on an upper surface of the case.

8. The air purifier of claim 1 , wherein a center axis of the handle extending along a longitudinal direction is configured to be above a center axis of the case extending along the longitudinal direction.

9. An air purifying system, comprising:
a main air purifier configured to purify air; and
a handheld air purifier configured to purify air at a smaller air purifying capacity than the main air purifier and configured to be mounted on and removed from the main air purifier, the handheld air purifier including:
a suction body having a first surface and a filter, and
a handle coupled to the suction body, wherein, when the handheld air purifier is mounted on the main air purifier, the main air purifier performs at least one of suctioning foreign matter from the first surface or sterilizing the first surface,
wherein the handheld air purifier includes a striking bar provided at a lower surface of the suction body, the striking bar being configured to move forward from the suction body and backward toward the suction body to strike a surface.

10. The air purifying system of claim 9 , wherein the main air purifier includes:
a mounting portion configured to receive the handheld air purifier;
a dust inlet having a plurality of holes provided on an outer surface of the mounting portion such that, when the handheld air purifier is mounted on the main air purifier, the first surface is aligned with the dust inlet; and
a fan to suction air through the dust inlet.

11. The air purifying system of claim 10 , wherein the main air purifier further includes a suction portion provided at a bottom and an inlet connection conduit connecting the dust inlet and the suction portion.

12. The air purifying system of claim 9 , wherein the main air purifier includes:
a mounting portion configured to receive the handheld air purifier; and
an ultraviolet light emitting diode provided in the mounting portion and configured to emit ultraviolet light on the first surface when the handheld air purifier is mounted on the main air purifier to sterilize the first surface.

13. The air purifying system of claim 9 , wherein the main air purifier includes a sensor to sense whether the handheld air purifier is mounted on the main air purifier.

14. The air purifying system of claim 9 , wherein the main air purifier and the handheld air purifier wirelessly communicate with each other.

15. The air purifying system of claim 9 , wherein the suction body includes a rotating assembly having a turbine, and the striking member is configured to move when the turbine rotates.

16. The air purifying system of claim 15 , wherein the turbine has a plurality of blades configured to rotate when air is suctioned into the suction body.

17. The air purifying system of claim 15 , wherein the suction body includes a power transmitting assembly to convert a rotation movement of the turbine to a linear movement of first and second ends of the striking member, the first and second ends being configured to alternate pivoting back and forth when the turbine rotates.

18. An air purifying system, comprising:
a main air purifier configured to suction ambient air, purify the suctioned air, and discharge the purified air, the main air purifier having a first motor, a first fan, and a first filter; and
a handheld air purifier configured to be seated on and lifted from the main air purifier, the handheld air purifier being configured to suction a lesser volume of air than the main air purifier, purify the suctioned air, and discharged the purified air, and the handheld air purifier having a second motor different from the first motor, a second fan different from the first fan and a second filter different from the first filter,
wherein an operation of the main air purifier is based on whether the handheld air purifier is seated on the main air purifier.

19. The air purifying system of claim 18 , wherein when the handheld air purifier is seated on the main air purifier, the main air purifier is operated to remove foreign matter from the handheld air purifier.

Assignees

• Lg Electronics Inc
• Chungang Univ Industry Academic Cooperation Foundation

Inventors

• Jeon Jongkeon
• Chung Haeyoong
• Kang Jiyoung
• Lee David Kangseong
• Kwak Daeyoung
• Park Sohee

Classifications

• F24F5/0096

  combined with domestic apparatus · CPC title

• A47L5/26 Primary

  with driven dust-loosening tools · CPC title

• A47L7/04

  for using the exhaust air for other purposes, e.g. for distribution of chemicals in a room, for sterilisation of the air (spraying or atomising in general B05) · CPC title

• B01D46/429

  Means for wireless communication · CPC title

• F24F2221/18

  combined with domestic apparatus · CPC title