Air purifier and air purifying system

Patent metadata

Field	Value
Publication number	US-11566800-B2
Application number	US-202016821197-A
Country	US
Kind code	B2
Filing date	Mar 17, 2020
Priority date	Mar 19, 2019
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A handheld air purifier may include a suction body provided with a suction surface having a first and second frame, a fan to suction air, and a filter to filter suctioned air, a bending portion extending rearward from the suction body to bend upward, and a handle extending further from the bending portion and held by the user. The second frame may be provided behind the first frame and may include a protrusion that penetrates through the first frame to create a gap between the suction surface and a garment being treated to promote a free airflow through the handheld air purifier.

First claim

What is claimed is:

1. An air purifier, comprising:
a suction body having at least one opening provided in a lower surface;
a fan to suction air through the lower surface;
a filter provided adjacent to the opening to filter foreign matter air suctioned through the opening; and
a handle extending rearward from the suction body, wherein the suction body, fan, filter, and handle have a total size and weight configured to be carried and held by a user,
wherein the suction body includes:
a first suction frame forming an outer side surface of the suction body, the first suction frame including at least one opening; and
a second suction frame provided on an inner side of the first suction frame, the second suction frame having a protrusion configured to insert through the at least one opening of the first suction frame.

2. The air purifier of claim 1 , wherein a height of the suction body is smaller than a width of the suction body.

3. The air purifier of claim 1 , wherein a width of the suction body is smaller than a length of the suction body.

4. The air purifier of claim 1 , further including:
a bending portion provided between the suction body and the handle, the bending portion bending upward from the suction body to the handle such that the handle is provided to be higher than the suction body; and
a discharge port formed in the bending portion through which air is discharged.

5. The air purifier of claim 4 , wherein the handle, the suction body, and the bending portion form a hollow case, and the fan is provided inside of the hollow case at a position between the suction body and the bending portion.

6. The air purifier of claim 1 , wherein the fan is a sirocco fan.

7. The air purifier of claim 6 , wherein a suction port of the sirocco fan is formed in the suction body and extends in a width direction of the suction body.

8. The air purifier of claim 6 , wherein the air purifier includes a bending portion provided between the suction body and the handle, and wherein the sirocco fan is configured to discharge air toward the bending portion.

9. The air purifier of claim 1 , wherein a battery is provided inside the handle.

10. The air purifier of claim 1 , wherein the second suction frame is configured to be moved toward and away from the first suction frame such that the protrusion protrudes through the at least one opening when the second suction frame is moved toward the first suction frame and the protrusion.

11. The air purifier of claim 1 , wherein the at least one opening includes at least one slit extending in a first direction and at least one slit extending in a second direction, the first direction being a longitudinal direction of the first suction frame and the second direction being perpendicular to the first direction.

12. The air purifier of claim 1 , further comprising a sensor configured to measure an amount of foreign matter in the air adjacent to the suction body.

13. An air purifier, comprising:
a suction body and a handle coupled to the suction body to form a case;
a fan provided in the case and configured to suction air;
a motor provided in the case to drive the fan;
a motor load sensor provided in the case and configured to measure a load on the motor;
a filter provided in the case and configured to filter suctioned air; and
a suction surface formed on the case through which air is suctioned and including:
a first suction frame forming an outer surface of the suction surface; and
a second suction frame provided on an inner side of the first suction frame, the second suction frame having at least one protrusion that is configured to penetrate through the first suction frame, wherein a protruding length of the protrusion is based on the load measured by the motor load sensor to control a flow resistance of air being suctioned through the first suction frame.

14. The air purifier of claim 13 , further comprising a dust sensor to measure foreign matter contained in air adjacent to the suction surface, wherein the fan motor is driven to increase a speed of the fan when an amount of foreign matter sensed by the dust sensor increases.

15. The air purifier of claim 14 , wherein the dust sensor is an optical sensor provided in an inner space of the suction body.

16. The air purifier of claim 14 , wherein at least one slit is formed in the first suction frame through which the protrusion is inserted in a first direction, the first direction being a direction from an inner side of the first suction frame to an outer side of the first suction frame, and the slit has a shape extending in a second direction perpendicular to the first direction, the protrusion having a shape corresponding to a shape of the slit to extend in the second direction.

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

• F24F8/80 Primary

  Self-contained air purifiers · CPC title

• F24F8/108

  using dry filter elements · CPC title

• A47L9/322

  for hand-supported suction cleaners · CPC title

• B01D46/0005

  Mounting of filtering elements within casings, housings or frames (B01D46/2422 takes precedence) · CPC title

• B01D2273/30

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