Cyclonic separation apparatus

Patent metadata

Field	Value
Publication number	US-10213793-B2
Application number	US-201715410407-A
Country	US
Kind code	B2
Filing date	Jan 19, 2017
Priority date	Jan 22, 2016
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

A cyclonic separation apparatus includes an outer wall, an inner wall and a cyclonic chamber defined between the outer wall and inner wall. A section of the surfaces of both the outer wall and the inner wall are flattened. The inner wall and the outer wall are also concentrically arranged. During use a fluid moving around the cyclonic chamber flows between a curved passage and a flattened passage of the cyclonic chamber.

First claim

The invention claimed is:

1. A cyclonic separation apparatus comprising:
an outer wall;
an inner wall; and
a cyclonic chamber defined between the outer wall and inner wall,
wherein the outer wall and the inner wall each comprise a curved section and a flat section, and the inner wall and the outer wall are concentrically arranged such that during use a fluid moving around the cyclonic chamber flows between a curved passage and a flat passage of the cyclonic chamber, and
wherein the cyclonic separation apparatus comprises a fluid inlet, the fluid inlet being positioned on the flat section of the inner wall such that fluid admitted into the cyclonic chamber flows through the curved passage before flowing through the flat passage.

2. The cyclonic separation apparatus of claim 1 , wherein the cross-sectional area of the cyclonic chamber remains constant through the curved passage and the flattened passage.

3. The cyclonic separation apparatus of claim 1 , wherein the inner wall has multiple perforations that provide a fluid outlet from the cyclonic chamber.

4. The cyclonic separation apparatus of claim 3 , wherein the perforations are provided on the curved section only of the inner wall.

5. The cyclonic separation apparatus of claim 1 , wherein the cyclonic separation apparatus comprises a dirt collection chamber located beneath the cyclonic chamber, the dirt collection chamber being bounded by the outer wall of the cyclonic chamber and a base that is pivotally connected to the outer wall, the base being released by an opening mechanism positioned along the flattened section of the outer wall.

6. The cyclonic separation apparatus of claim 5 , wherein the outer profile of the opening mechanism is curved such that the outer profile of the cyclonic separation apparatus around the outer wall and opening mechanism is cylindrical.

7. A vacuum cleaner comprising a cyclonic separation apparatus, wherein the cyclonic separation apparatus comprises:
an outer wall;
an inner wall; and
a cyclonic chamber defined between the outer wall and inner wall,
wherein the outer wall and the inner wall each comprise a curved section and a flat section, and the inner wall and the outer wall are concentrically arranged such that during use a fluid moving around the cyclonic chamber flows between a curved passage and a flat passage of the cyclonic chamber, and
wherein the cyclonic separation apparatus comprises a fluid inlet, the fluid inlet being positioned on the flat section of the inner wall such that fluid admitted into the cyclonic chamber flows through the curved passage before flowing through the flat passage.

8. The vacuum cleaner of claim 7 , wherein the cross-sectional area of the cyclonic chamber remains constant through the curved passage and the flattened passage.

9. The vacuum cleaner of claim 7 , wherein the inner wall has multiple perforations that provide a fluid outlet from the cyclonic chamber.

10. The vacuum cleaner of claim 9 , wherein the perforations are provided on the curved section only of the inner wall.

11. The vacuum cleaner of claim 7 , wherein the cyclonic separation apparatus comprises a dirt collection chamber located beneath the cyclonic chamber, the dirt collection chamber being bounded by the outer wall of the cyclonic chamber and a base that is pivotally connected to the outer wall, the base being released by an opening mechanism positioned along the flattened section of the outer wall.

12. The vacuum cleaner of claim 11 , wherein the outer profile of the opening mechanism is curved such that the outer profile of the cyclonic separation apparatus around the outer wall and opening mechanism is cylindrical.

Assignees

• Dyson Technology Ltd

Inventors

• Maclean Tim John
• Braine Richard Allix
• Tunstill Joshua James
• CADDLE Ashley Jane

Classifications

• A47L9/1608

  Cyclonic chamber constructions · CPC title

• B01D45/16

  generated by the winding course of the gas stream {, the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes} · CPC title

• A47L9/1633

  Concentric cyclones · CPC title

• A47L9/1641

  for parallel flow · CPC title

• B04C5/081 Primary

  Shapes or dimensions · CPC title