Cleaning appliance

Patent metadata

Field	Value
Publication number	US-11344168-B2
Application number	US-201917059012-A
Country	US
Kind code	B2
Filing date	May 21, 2019
Priority date	May 31, 2018
Publication date	May 31, 2022
Grant date	May 31, 2022

Abstract

A cleaning appliance comprises a first housing having a hollow cylinder shape; a second housing fixed to a circumferential surface of the first housing; a third housing provided on a circumferential surface of the first housing and having an exhaust hole; a first communication hole between the first and second housings; a fan for moving air from the second communication hole to the exhaust hole; a particle separator for separating particles from the air by centrifugal force; a battery housing protruded from a rear surface of the first housing, wherein the center of gravity of the fan is located between the center of gravity of the particle separator and the center of gravity of the battery, and a rotary shaft for the fan is parallel with a straight line passing through the center of gravity of the particle separator along a longitudinal direction of the first housing.

First claim

The invention claimed is:

1. A cleaning appliance comprising:
a first housing provided in a hollow cylinder shape;
a second housing fixed to a top circumferential surface of the hollow cylinder shape of the first housing along a longitudinal direction of the first housing and provided with an intake unit through which the air enters;
a third housing provided on the top circumferential surface of the hollow cylinder shape of the first housing along the longitudinal direction of the first housing and provided with an exhaust hole;
a first communication hole for communicating the first housing with the second housing;
a second communication hole for communicating the first housing with the third housing;
a fan provided to include an impeller located in the third housing, a rotary shaft to which the impeller is fixed, and a motor rotating the rotary shaft, moving the air supplied from the second communication hole to the exhaust hole;
a particle separator provided inside the first housing to provide a path for guiding the air entering the first communication hole to the second communication hole, separating particles from the air by using a centrifugal force;
a battery housing protruded from a circular surface at a rear end of the hollow cylinder shape of the first housing located in a direction opposite to a position of the intake unit toward a direction far away from the first housing;
a battery provided in the battery housing, supplying a power to the motor; and
a handle having one end fixed to a rear surface of the third housing located in a direction opposite to the position of the intake unit and the other end fixed to the battery housing,
wherein a center of gravity of the fan is located between a center of gravity of the particle separator and a center of gravity of the battery, and rotary shaft is parallel with a first reference line passing through the center of gravity of the particle separator along the longitudinal direction of the first housing.

2. The cleaning appliance of claim 1 , wherein the center of gravity of the fan is located above the first reference line, and the center of gravity of the battery is located below the first reference line.

3. The cleaning appliance of claim 2 , wherein a center of gravity of the handle is located between the first reference line and a second reference line passing through the center of gravity of the fan along the longitudinal direction of the first housing.

4. The cleaning appliance of claim 3 , wherein the center of gravity of the fan, the center of gravity of the particle separator, the center of gravity of the battery, and the center of gravity of the handle are all located on a single plane that includes the first reference line and the second reference line.

5. The cleaning appliance of claim 4 , wherein the handle includes:
a first handle body extended from the rear surface of the third housing along a longitudinal direction of the rotary shaft, providing a space for grip of a user; and
a second handle body provided to connect a free end of the first handle body with an upper surface of the battery housing, providing a space for grip of a user.

6. The cleaning appliance of claim 5 , wherein a connection point of the first handle body and the second handle body is located between the first reference line and the second reference line.

7. The cleaning appliance of claim 6 , wherein the first handle body is inclined from the rear surface of the third housing toward the battery housing, and the second handle body is inclined toward the rear surface of the third housing.

8. The cleaning appliance of claim 6 , wherein the particle separator includes:
a partition for partitioning an inner space of the first housing into a front space communicated with the first communication hole and a rear space communicated with the second communication hole;
a partition through hole provided to pass through the partition;
chamber bodies provided in a hollow cylinder shape, having one end fixed to the partition and the other end which is in contact with the front surface of the first housing, and partitioning the front space into a first chamber communicated with the first communication hole and a second chamber communicated with the partition through hole;
a body partition partitioning an inner space of the second chamber into a first space communicated with the partition through hole and a second space which is not communicated with the partition through hole;
a through hole provided to pass through the chamber bodies to communicate the first space with the first chamber;
a path body provided in a pipe surrounding the partition through hole, having one end fixed to the partition and the other end communicated with the second space by passing through the body partition;
a discharge pipe provided as a pipe extended from the partition through hole toward the body partition and provided inside the path body;
an inlet provided to pass through the path body, guiding the air supplied to the through hole to the inside the path body; and
an air flow forming portion provided in a screw shape between the discharge pipe and the path body, rotating the air entering the inlet inside the path body.

9. The cleaning appliance of claim 8 , wherein the fan includes:
a case provided in the third housing, storing the impeller therein;
a case intake hole provided on one surface of the case headed for a rear surface of the third housing to allow the air to enter the inside of the case; and
a case exhaust hole provided on one surface of the case headed for a front surface of the third housing to discharge the air inside the case to the outside, and
the rotary shaft is located on a straight line passing through the center of the case intake hole and the center of the case exhaust hole.

10. The cleaning appliance of claim 9 , further comprising:
a first filter located between the second communication hole and the case intake hole, filtering the air; and
a second filter located between the case exhaust hole and the exhaust hole to filter the air, wherein the second filter is provided to filter particles smaller than those filtered by the first filter.

11. The cleaning appliance of claim 9 , further comprising:
a first filter located between the partition through hole and the second communication hole, filtering particles; and
a second filter located between the case exhaust hole and the exhaust hole to filter particles, wherein the second filter is provided to filter particles smaller than those filtered by the first filter.

Assignees

• Lg Electronics Inc

Inventors

• Hyun Kietak
• Lee Sangchul
• Her Jonguk

Classifications

• A47L9/1666 Primary

  with filtering means · CPC title

• A47L9/322

  for hand-supported suction cleaners · CPC title

• A47L5/24 Primary

  Hand-supported suction cleaners · CPC title

• A47L9/1641

  for parallel flow · CPC title

• A47L9/2884

  Details of arrangements of batteries or their installation · CPC title