Vacuum cleaner

Patent metadata

Field	Value
Publication number	US-2025380845-A1
Application number	US-202318876380-A
Country	US
Kind code	A1
Filing date	Jun 29, 2023
Priority date	Jun 29, 2022
Publication date	Dec 18, 2025
Grant date	—

Abstract

A vacuum cleaner is described comprising a dirt separator, suction motor comprising an electric motor for generating an airflow through the vacuum cleaner, one or more air outlets to an external environment of the vacuum cleaner, a first passageway fluidically located between the dirt separator and the electric motor, and a second passageway fluidically located between the electric motor and the one or more air outlets. The first passageway surrounds at least a portion of the second passageway, whereby the vacuum cleaner is configured so that, in use, the electric motor causes the airflow to move through the dirt separator, and then to the electric motor via the first passageway, and then from the electric motor to the external environment of the vacuum cleaner via the second passageway and at least one of the one or more air outlets.

First claim

1 . A vacuum cleaner comprising a dirt separator, suction motor comprising an electric motor for generating an airflow through the vacuum cleaner, one or more air outlets to an external environment of the vacuum cleaner, a first passageway fluidically located between the dirt separator and the electric motor, and a second passageway fluidically located between the electric motor and the one or more air outlets, wherein the first passageway surrounds at least a portion of the second passageway, whereby the vacuum cleaner is configured so that, in use, the electric motor causes the airflow to move through the dirt separator, and then to the electric motor via the first passageway, and then from the electric motor to the external environment of the vacuum cleaner via the second passageway and at least one of the one or more air outlets.

2 . The vacuum cleaner of claim 1 , wherein at least the portion of the second passageway surrounds at least a part of the electric motor.

3 . The vacuum cleaner of claim 2 , wherein the electric motor has a rotational axis, and wherein the portion of the second passageway surrounds at least the part of the electric motor in a plane that is orthogonal to the rotational axis and the first passageway surrounds at least the portion of the second passageway in the plane that is orthogonal to the rotational axis.

4 . (canceled)

5 . The vacuum cleaner of claim 1 , comprising one or more tubes respectively defining one or more channels, wherein the, or each of the, channels is fluidically connected to the second passageway and extends to the one or more air outlets, and wherein the one or more tubes extend through the first passageway so that the first passageway surrounds at least a portion of the, or each of the, one or more tubes.

6 . The vacuum cleaner of claim 5 , wherein the first passageway and the one or more tubes are configured relative to each other so that, in use, the electric motor causes the airflow to move through the first passageway in a first direction parallel to a rotational axis of the electric motor, and through the, or each of the, one or more channels in a second direction that is normal to the first direction.

7 . (canceled)

8 . The vacuum cleaner of claim 1 , wherein the suction motor comprises a casing that houses at least part of the suction motor, wherein the vacuum cleaner comprises an inner wall and an outer wall, and wherein the first passageway is defined between the inner wall and the outer wall, and at least the portion of the second passageway is defined between the inner wall and the casing, and the, or each of the, one or more air outlets is defined in the outer wall.

9 . The vacuum cleaner of claim 8 , wherein the first passageway is annular, wherein at least the portion of the second passageway is annular, and wherein the electric motor is positioned radially inwardly of both the first passageway and the portion of the second passageway.

10 . (canceled)

11 . The vacuum cleaner of claim 8 , comprising a filter assembly, wherein the filter assembly comprises a pre-filter fluidically located between the first passageway and the electric motor, a post-filter fluidically located between the second passageway and the one or more air outlets, and one or more seals that seal against the inner wall and the casing such that the vacuum cleaner is configured so that, in use, air moves from the dirt separator to the pre-filter via the first passageway, and air moves from the electric motor to the post-filter via the second passageway.

12 . The vacuum cleaner of claim 1 , comprising an annular chamber and one or more channels, wherein the annular chamber is fluidically connected to the second passageway, and wherein the, or each of the, one or more channels extends from the annular chamber to one of the one or more air outlets.

13 . The vacuum cleaner of claim 1 , comprising a first airflow path and a filter assembly, wherein the first airflow path extends from the dirt separator to the electric motor and comprises the first passageway, and wherein the filter assembly comprises a pre-filter that is fluidically located in the first airflow path so that the first passageway is upstream of the pre-filter and a downstream portion of the first airflow path is downstream of the pre-filter.

14 . The vacuum cleaner of claim 13 , comprising a second airflow path that extends from the electric motor to the one or more outlets and comprises the second passageway, wherein the filter assembly comprises a post-filter that is fluidically located in the second airflow path so that the second passageway is upstream of the post-filter and a downstream portion of the second airflow path is downstream of the post-filter.

15 . The vacuum cleaner of claim 14 , wherein the downstream portion of the second airflow path comprises an annular chamber and one or more channels, wherein the, or each of the, one or more channels extends from the annular chamber to one of the one or more air outlets.

16 . The vacuum cleaner of claim 15 , comprising one or more tubes respectively defining the one or more channels, wherein the one or more tubes extend through the first passageway so that the first passageway surrounds at least a portion of the, or each of the, one or more tubes.

17 . The vacuum cleaner of claim 14 , wherein the post-filter surrounds at least a part of the electric motor.

18 . The vacuum cleaner of claim 1 , comprising a filter assembly, wherein the filter assembly comprises a post-filter downstream of the electric motor, and wherein the first passageway surrounds at least a major part of the post-filter.

19 . (canceled)

20 . The vacuum cleaner of claim 18 , wherein the post-filter is annular, and wherein the vacuum cleaner comprises an annular chamber that is immediately downstream of the post-filter.

21 . The vacuum cleaner of claim 20 , comprising one or more channels, wherein the, or each of the, one or more channels extends from the annular chamber to one of the one or more air outlets.

22 . The vacuum cleaner of claim 1 , wherein the electric motor has a rotational axis, and wherein, in a plane that is orthogonal to the rotational axis and passes through at least one of the one or more air outlets, the vacuum cleaner comprises a chamber and one or more channels, wherein the, or each of the, one or more channels extends from the chamber to a respective one of the one or more air outlets.

23 . The vacuum cleaner of claim 1 , wherein the dirt separator comprises a non-cyclonic separation system and/or a cyclonic separation system.

24 . The vacuum cleaner of claim 23 , wherein the dirt separator comprises the non-cyclonic separation system and the cyclonic separation system, wherein the cyclonic separation system is located downstream of the non-cyclonic separation system.

25 .- 132 . (canceled)

Assignees

• Dyson Technology Ltd

Inventors

• Gray Jonathan James
• Patel Ketan
• Knox Joel Alan
• Harker Anthony Andrew Buchanan
• Sugahara Shohei
• Toogood Oliver
• Selvarajah Arjun

Classifications

• A47L9/20

  Means for cleaning filters · CPC title

• A47L9/1691

  Mounting or coupling means for cyclonic chamber or dust receptacles · CPC title

• A47L9/106 Primary

  Dust removal · CPC title

• A47L9/248

  Parts, details or accessories of hoses or pipes (nozzles A47L9/02) · CPC title

• A47L9/246 Primary

  with electrical connectors · CPC title