Autonomous vacuum

Patent metadata

Field	Value
Publication number	US-11141032-B2
Application number	US-201816199835-A
Country	US
Kind code	B2
Filing date	Nov 26, 2018
Priority date	Dec 19, 2014
Publication date	Oct 12, 2021
Grant date	Oct 12, 2021

Abstract

An autonomous vacuum cleaner operable to navigate about a surrounding environment to perform a surface cleaning operation without continuous human input. The vacuum cleaner includes a suction nozzle and a suction motor and a fan assembly operable to generate an airflow through the vacuum cleaner from the suction nozzle through a debris separator to a clean air exhaust. The suction motor and the fan assembly having an axis of rotation and a fan of the fan assembly rotatable about the axis of rotation. The axis of rotation is orientated horizontally. The debris separator includes a cyclonic separator operable to separate debris from the airflow and the cyclonic separator includes a cylindrical wall along a longitudinal axis, the longitudinal axis of the cyclonic separator being orientated horizontally.

First claim

What is claimed is:

1. An autonomous vacuum cleaner comprising:
a housing with one or more of a controller, a sensor, and an automatic wheel assembly operable in combination to sense a surrounding environment and to navigate about the surrounding environment to perform a surface cleaning operation without continuous human input;
a suction nozzle;
a suction motor and a fan assembly operable to generate an airflow through the vacuum cleaner from the suction nozzle through a debris separator to a clean air exhaust,
the suction motor and the fan assembly having an axis of rotation and a fan of the fan assembly rotatable about the axis of rotation, the axis of rotation orientated horizontally,
the debris separator including a cyclonic separator operable to separate debris from the airflow, the cyclonic separator including,
a cylindrical wall along a longitudinal axis, the longitudinal axis of the cyclonic separator being orientated horizontally, and
wherein the suction nozzle is along a longitudinal axis generally parallel to the longitudinal axis of the cyclonic separator.

2. The autonomous vacuum cleaner of claim 1 , wherein the cylindrical wall includes a first end and a second end, the longitudinal axis extending through the first end and the second end, and wherein the axis of rotation extends through the first end and the second end of the cylindrical wall.

3. The autonomous vacuum cleaner of claim 2 , wherein the cyclonic separator further includes, a dirty air inlet, a clean air outlet, a debris outlet adjacent the second end of the cylindrical wall, and a dust bin in fluid communication with the debris outlet of the cyclonic separator.

4. The autonomous vacuum cleaner of claim 2 , where the longitudinal axis of the cyclonic separator is coaxial with the axis of rotation of the motor and fan assembly.

5. The autonomous vacuum cleaner of claim 1 , wherein the axis of rotation of the motor and fan assembly is generally parallel to the longitudinal axis of the suction nozzle.

6. The autonomous vacuum cleaner of claim 1 , wherein the cyclonic separator has a cyclone diameter, and a horizontal distance between the longitudinal axis of the cyclonic separator and the longitudinal axis through the nozzle along a direction of travel is between about 0.4 and about 1.5 times the cyclone diameter.

7. The autonomous vacuum cleaner of claim 1 , further comprising a dust bin in fluid communication with the cyclonic separator, wherein the longitudinal axis of the cyclonic separator is transverse to a longitudinal axis of the dust bin.

8. The autonomous vacuum cleaner of claim 1 , wherein the cyclonic separator has a cyclone diameter, and a distance from the longitudinal axis of the nozzle to the longitudinal axis of the separator is between about 0.4 and 1.5 times the cyclone diameter.

9. The autonomous vacuum cleaner of claim 1 , further comprising a filter positioned between the cyclonic separator and the suction motor and fan assembly to filter air discharged from the separator.

10. The autonomous vacuum cleaner of claim 1 , wherein the cyclonic separator is removably connected to the suction source.

11. The autonomous vacuum cleaner of claim 1 , wherein the cyclonic separator further includes a first end wall located at the first end of the cylindrical wall, and wherein a clean air outlet extends through the first end wall of the cyclonic separator.

12. The autonomous vacuum cleaner of claim 11 , wherein the cyclonic separator further includes a second end wall defining a portion of a debris outlet.

13. The autonomous vacuum cleaner of claim 1 , where the cyclonic separator includes a clean air outlet, wherein the clean air outlet includes a perforated tube located within the cylindrical wall.

14. The autonomous vacuum cleaner of claim 1 , further comprising a battery that provide power to the suction motor, wherein the battery is removable from the autonomous vacuum cleaner to facilitate recharging the battery.

15. The autonomous vacuum cleaner of claim 1 , further comprising a brush roll adjacent the suction nozzle.

16. The autonomous vacuum cleaner of claim 15 , wherein the brush roll rotates in a first direction to facilitate forward movement of the autonomous vacuum cleaner and the brush roll rotates in a second direction, opposite the first direction, to facilitate backward movement of the autonomous vacuum cleaner.

17. An autonomous vacuum cleaner comprising:
a housing with one or more of a controller, a sensor, and an automatic wheel assembly operable in combination to sense a surrounding environment and to navigate about the surrounding environment to perform a surface cleaning operation without continuous human input;
a suction nozzle;
a suction motor and a fan assembly operable to generate an airflow through the vacuum cleaner from the suction nozzle through a debris separator to a clean air exhaust,
the suction motor and the fan assembly having an axis of rotation and a fan of the fan assembly rotatable about the axis of rotation, the axis of rotation orientated horizontally,
the debris separator including a cyclonic separator operable to separate debris from the airflow, the cyclonic separator including,
a cylindrical wall along a longitudinal axis, the longitudinal axis of the cyclonic separator being orientated horizontally, and
a dust bin in fluid communication with the cyclonic separator, wherein the longitudinal axis of the cyclonic separator is transverse to a longitudinal axis of the dust bin.

18. An autonomous vacuum cleaner comprising:
a housing with one or more of a controller, a sensor, and an automatic wheel assembly operable in combination to sense a surrounding environment and to navigate about the surrounding environment to perform a surface cleaning operation without continuous human input;
a suction nozzle;
a suction motor and a fan assembly operable to generate an airflow through the vacuum cleaner from the suction nozzle through a debris separator to a clean air exhaust,
the suction motor and the fan assembly having an axis of rotation and a fan of the fan assembly rotatable about the axis of rotation, the axis of rotation orientated horizontally,
the debris separator including a cyclonic separator operable to separate debris from the airflow, the cyclonic separator including,

a cylindrical wall along a longitudinal axis, the longitudinal axis of the cyclonic separator being orientated horizontally,
wherein the cyclonic separator further includes a first end wall located at the first end of the cylindrical wall, and wherein a clean air outlet extends through the first end wall of the cyclonic separator, and
wherein the cyclonic separator further includes a second end wall defining a portion of a debris outlet.

19. The autonomous vacuum cleaner of claim 18 , further comprising a perforated tube located within the cylindrical wall, the perforated tube extending from the first end wall of the cyclonic separator forming the clean air outlet, and wherein the perforated tube is removable with the first end wall when the separator is removed from the suction motor and fan assembly.

20. The autonomous vacuum cleaner of claim 18 , wherein a dirty air inlet of the cyclonic separator is adjacent the first end of the cylindrical wall.

21. The autonomous vacuum cleaner of claim 20 , wherein the dirty air inlet extends through the cylindrical wall.

Assignees

• Techtronic Ind Co Ltd

Inventors

• Love Alan
• Makarov Sergey
• Sumrain Shadi
• Truitt Patrick

Classifications

• A47L9/00 Primary

  Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners · CPC title

• A47L9/0488

  Combinations or arrangements of several tools, e.g. edge cleaning tools · CPC title

• A47L11/40

  Parts or details of machines not {provided for in} groups A47L11/02 - A47L11/38, {or not restricted to one of these groups}, e.g. handles, arrangements of switches, skirts, buffers, levers · CPC title

• A47L9/0477

  Rolls · CPC title

• A47L2201/04

  Automatic control of the travelling movement; Automatic obstacle detection · CPC title