# US 10,945,573 B2 · Cleaner

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- Number: US 10,945,573 B2
- Document ID: US10945573B2
- Status: Granted
- Kind: B2
- Application number: 16/711,155
- Filed: 2019-12-11
- Published: 2020-04-16
- Granted: 2021-03-16
- Earliest claimed: 2016-03-31
- Assignees: LG Electronics Inc.
- Applicants: LG Electronics Inc.
- Inventors: Bohyun Nam; Namhee Kim; Jinju Kim; Hyeonjeong An; Jungbae Hwang; Philjae Hwang; Mantae Hwang; Eunji Sung; Taekgi Lee
- Web page: https://patentgrep.com/patent/US10945573B2

## CPC

- A47L 9/1675: {movable, revolving or rotary}
- A47L 5/22: with rotary fans
- A47L 5/24: Hand-supported suction cleaners
- A47L 9/106: {Dust removal}
- A47L 9/12: Dry filters
- A47L 9/16: Arrangement or disposition of cyclones or other devices with centrifugal action
- A47L 9/1625: {for series flow}
- A47L 9/1633: {Concentric cyclones}
- A47L 9/1641: {for parallel flow}
- A47L 9/1683: {Dust collecting chambers; Dust collecting receptacles}
- A47L 9/22: Mountings for motor fan assemblies
- A47L 9/28: Installation of the electric equipment, e.g. adaptation or attachment to the suction cleaner; Controlling suction cleaners by electric means
- A47L 9/2842: {Suction motors or blowers}
- A47L 9/2857: {User input or output elements for control, e.g. buttons, switches or displays}
- A47L 9/2873: {Docking units or charging stations (for autonomous or robotic vacuum cleaners A47L2201/02)}
- A47L 9/2884: {Details of arrangements of batteries or their installation}
- A47L 9/32: Handles
- A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08)

## Abstract

A cleaner includes: a suction motor that generates suction force; a dust separation unit that separates dust from air sucked by the suction force; a motor housing that covers the suction motor; a flow guide that surrounds an outer side of the motor housing and guides air discharged from the dust separation unit to the suction motor; and a body that forms an external appearance by surrounding the flow guide and guides air discharged from the suction motor together with the flow guide.

## Claims

### Claim 1

A cleaner comprising:
a suction motor that is configured to generate suction force to thereby suction air;
a dust separation unit that is configured to separate dust from the suctioned air, the dust separation unit including a first cyclone unit and a second cyclone unit that is configured to separate dust from air received from the first cyclone unit;
a motor housing that accommodates the suction motor;
a flow guide that surrounds an outer side of the motor housing and is configured to guide air discharged from the dust separation unit to the suction motor; and
a body that surrounds the flow guide and is configured to guide air discharged from the suction motor,
wherein the suction motor is positioned above an air outlet of the second cyclone unit.

### Claim 2 (depends on 1)

The cleaner of claim 1, wherein a first air passage is defined between the flow guide and the motor housing, the first air passage being configured to guide air to the suction motor, and
wherein a second air passage is defined between the flow guide and the body, the second air passage being configured to guide air discharged from the suction motor.

### Claim 3 (depends on 1)

The cleaner of claim 1, further comprising a filter unit that includes:
a filter configured to filter air discharged from the suction motor, and
a filter frame configured to receive the filter,
wherein the filter frame is removably connected to the body.

### Claim 4 (depends on 1)

The cleaner of claim 1, wherein the flow guide is positioned vertically higher than the air outlet of the second cyclone unit.

### Claim 5 (depends on 1)

The cleaner of claim 1, wherein the second cyclone unit includes a plurality of cyclone bodies.

### Claim 6 (depends on 1)

The cleaner of claim 1, further comprising a pre-filter that is disposed to surround the motor housing.

### Claim 7 (depends on 6)

The cleaner of claim 6, wherein the suction motor includes an impeller, the impeller being positioned at an upper portion of the suction motor, and wherein the pre-filter is configured to surround the impeller.

### Claim 8 (depends on 6)

The cleaner of claim 6, wherein the motor housing includes a filter support configured to support the pre-filter.