Vacuum cleaner

Patent metadata

Field	Value
Publication number	US-12557950-B2
Application number	US-202018266437-A
Country	US
Kind code	B2
Filing date	Dec 17, 2020
Priority date	Dec 17, 2020
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

A vacuum cleaner comprising an elongated body having a nozzle end and a handle end, an air inlet arranged at the nozzle end, a handle arranged at the handle end, at least one air outlet arranged on the elongated body, and a dust separation unit arranged inside the elongated body. The vacuum cleaner further comprises a first motor/fan unit and a second motor/fan unit each arranged inside the elongated body. The first motor/fan unit and second motor/fan unit are arranged to operate in parallel to generate an airflow from the air inlet through the dust separation unit to the at least one air outlet.

First claim

The invention claimed is:

1 . A vacuum cleaner comprising:
an elongated body having a nozzle end and a handle end, an air inlet arranged at the nozzle end, a handle arranged at the handle end, at least one air outlet arranged on the elongated body, a dust separation unit arranged inside the elongated body, and a first motor/fan unit and a second motor/fan unit each arranged inside the elongated body, wherein the first motor/fan unit and the second motor/fan unit are arranged to operate in parallel to generate an airflow from the air inlet through the dust separation unit to the at least one air outlet and the first motor/fan unit has a different efficient working point from the second motor/fan unit.

2 . The vacuum cleaner according to claim 1 , wherein the dust separation unit comprises a cyclone separator.

3 . The vacuum cleaner according to claim 1 , wherein the first motor/fan unit is different from the second motor/fan unit with regard to structural aspects.

4 . The vacuum cleaner according to claim 3 , wherein each of the first motor/fan unit and the second motor/fan unit comprises a respective fan and a respective electric motor configured to power the respective fan, and wherein the first motor/fan unit and the second motor/fan unit are differently configured regarding a type and/or a size of the respective electric motor.

5 . The vacuum cleaner according to claim 3 , wherein each of the first motor/fan unit and the second motor/fan unit comprises a respective fan and a respective electric motor configured to power the respective fan, and wherein the first motor/fan unit and the second motor/fan unit are differently configured regarding a type and/or a size of the respective fan.

6 . The vacuum cleaner according to claim 1 , wherein at least one of the first motor/fan unit and the second motor/fan unit comprises a fan and a brushless electric motor configured to power the fan.

7 . The vacuum cleaner according to claim 1 , wherein each of the first motor/fan unit and the second motor/fan unit comprises a respective fan and a respective brushless electric motor configured to power the respective fan.

8 . The vacuum cleaner according to claim 1 , wherein the vacuum cleaner comprises a control arrangement configured to control operation of the first motor/fan unit and the second motor/fan unit, and wherein the control arrangement is configured to operate the first motor/fan unit and the second motor/fan unit in a mode in which the first motor/fan unit and the second motor/fan unit are operated at different respective power levels.

9 . The vacuum cleaner according to claim 1 , wherein the second motor/fan unit is arranged at a greater distance from the nozzle end than the first motor/fan unit.

10 . The vacuum cleaner according to claim 1 , wherein the first motor/fan unit and the second motor/fan unit are arranged inside the elongated body such that a central elongation axis of the elongated body extends through each of the first motor/fan unit and the second motor/fan unit.

11 . The vacuum cleaner according to claim 1 , wherein the second motor/fan unit comprises a respective rotation axis that is substantially parallel to a respective rotation axis of the first motor/fan unit.

12 . The vacuum cleaner according to claim 1 , wherein the vacuum cleaner comprises a battery assembly configured to supply electricity to the first motor/fan unit and the second motor/fan unit.

13 . The vacuum cleaner according to claim 12 , wherein the vacuum cleaner comprises a duct assembly configured to conduct air from the air inlet through the dust separation unit to the at least one air outlet, and wherein the duct assembly comprises a section in thermal communication with the battery assembly.

14 . The vacuum cleaner according to claim 13 , wherein the section is arranged downstream of the first motor/fan unit and the second motor/fan unit.

15 . The vacuum cleaner according to claim 1 , wherein the vacuum cleaner comprises two separate air outlets arranged on the elongated body.

16 . The vacuum cleaner according to claim 1 , wherein the vacuum cleaner is configured for floor cleaning.

17 . A vacuum cleaner comprising:
an elongated body having a nozzle end and a handle end; an air inlet arranged at the nozzle end; a handle arranged at the handle end; at least one air outlet arranged on the elongated body; a dust separation unit arranged inside the elongated body; and a first motor and fan unit and a second motor and fan unit each arranged inside the elongated body, wherein the first motor and fan unit and the second motor and fan unit are arranged to operate in parallel to generate an airflow from the air inlet through the dust separation unit to the at least one air outlet and the second motor and fan unit is arranged at a greater distance from the nozzle end than the first motor and fan unit.

18 . The vacuum cleaner of claim 17 , wherein the first motor and fan unit has a different efficient working point from the second motor and fan unit.

19 . A vacuum cleaner comprising:
an elongated body having a nozzle end and a handle end; an air inlet arranged at the nozzle end; a handle arranged at the handle end; at least one air outlet arranged on the elongated body; a dust separation unit arranged inside the elongated body; and a first motor and fan unit and a second motor and fan unit each arranged inside the elongated body, wherein the first motor and fan unit and the second motor and fan unit are arranged to operate in parallel to generate an airflow from the air inlet through the dust separation unit to the at least one air outlet, and wherein the first motor and fan unit comprises a first electric motor, the second motor and fan unit comprises a second electric motor, and the first electric motor is of a different type and/or size from the second electric motor.

20 . The vacuum cleaner of claim 19 , wherein the first motor and fan unit further comprises a first fan, the second motor and fan unit further comprises a second fan, and the first fan is of a different type and/or size from the second fan.

Assignees

• Electrolux Ab

Inventors

• Sörmark Christoffer
• Mian Peter

Classifications

• A47L9/2842

  Suction motors or blowers · CPC title

• A47L9/22

  Mountings for motor fan assemblies · CPC title

• A47L9/2889

  Safety or protection devices or systems, e.g. for prevention of motor over-heating or for protection of the user · CPC title

• A47L9/2884

  Details of arrangements of batteries or their installation · CPC title

• A47L9/2831

  Motor parameters, e.g. motor load or speed · CPC title