Cyclonic separating device, cleaner, surface cleaning apparatus and cyclonic separating method

Patent metadata

Field	Value
Publication number	US-9565983-B2
Application number	US-201414770713-A
Country	US
Kind code	B2
Filing date	Sep 22, 2014
Priority date	May 26, 2014
Publication date	Feb 14, 2017
Grant date	Feb 14, 2017

Abstract

A cyclonic separating device includes: a first cyclonic separator defining a first longitudinal axis; a plurality of second cyclonic separators located downstream of the first cyclonic separator, arranged circumferentially around the first longitudinal axis in parallel, and integrally received in the first cyclonic separator; an inlet passage at least partially received in the first cyclonic separator; a guiding passage communicated with the inlet passage and the first cyclonic separator respectively, in which a fluid introduced through the inlet passage is tangentially guided into the first cyclonic separator by the guiding passage. In addition, a surface cleaning apparatus, a cleaner and a method for separating dust from a dust containing air using the cyclonic separating device are further provided.

First claim

What is claimed is:

1. A cyclonic separating device, comprising:
a first cyclonic separator defining a first longitudinal axis, the first cyclonic separator having one or more walls defining an interior separating space;
a plurality of second cyclonic separators located downstream of the first cyclonic separator, arranged circumferentially around the first longitudinal axis in parallel, and integrally received in the first cyclonic separator such that the plurality of second cyclonic separators are located wholly within the interior separating space of the first cyclonic separator;
an air intake centrally located along the first longitudinal axis of the first cyclonic separator;
an inlet passage in fluid communication with the air intake and at least partially received in the first cyclonic separator;
a guiding passage communicated with the inlet passage and the first cyclonic separator respectively, wherein a fluid introduced through the inlet passage is tangentially guided outwardly into the interior separating space of the first cyclonic separator by the guiding passage;
wherein each of the plurality of second cyclonic separators has an air inlet formed on a side wall thereof, and the fluid is tangentially guided into the plurality of second cyclonic separators by the air inlet.

2. The cyclonic separating device according to claim 1 , wherein a fluid outlet of the guiding passage is disposed between two adjacent second cyclonic separators.

3. The cyclonic separating device according to claim 1 , wherein a portion of the inlet passage received in the first cyclonic separator is extended along the first longitudinal axis.

4. The cyclonic separating device according to claim 2 , wherein the fluid outlet is configured such that the fluid tangentially flows into the first cyclonic separator in a plane perpendicular to the first longitudinal axis.

5. The cyclonic separating device according to claim 1 , wherein a projection of the guiding passage in the plane perpendicular to the first longitudinal axis is substantially helical or arc-shaped.

6. The cyclonic separating device according to claim 1 , wherein at least one of the plurality of second cyclonic separators defines a second longitudinal axis parallel to the first longitudinal axis.

7. The cyclonic separating device according to claim 3 , further comprising:
a dust collecting space surrounding a periphery of the inlet passage, and communicated with the plurality of second cyclonic separators respectively to collect dust separated by the plurality of second cyclonic separators.

8. The cyclonic separating device according to claim 7 , wherein a central axis of the dust collecting space coincides with the first longitudinal axis.

9. The cyclonic separating device according to claim 2 , further comprising:
a filtering member connected between adjacent second cyclonic separators, wherein the fluid from which the dust has been separated by the first cyclonic separator tangentially flows into the second cyclonic separator via the filtering member.

10. The cyclonic separating device according to claim 9 , wherein the filtering member and the adjacent second cyclonic separators are formed integrally.

11. The cyclonic separating device according to claim 10 , wherein a central axis of the filtering member coincides with the first longitudinal axis, and a projection region of at least one of the plurality of second cyclonic separators in a plane perpendicular to the first longitudinal axis is protruded beyond a projection region of the filtering member in the plane perpendicular to the first longitudinal axis.

12. The cyclonic separating device according to claim 10 , wherein a circumferential flanged edge is formed at a lower part of the filtering member, extended into the first cyclonic separator and inclined downwardly.

13. A cleaner, comprising a cyclonic separating device comprising:
a first cyclonic separator defining a first longitudinal axis, the first cyclonic separator having one or more walls defining an interior separating space;
a plurality of second cyclonic separators located downstream of the first cyclonic separator, arranged circumferentially around the first longitudinal axis in parallel, and integrally received in the first cyclonic separator, such that the plurality of second cyclonic separators are located wholly within the interior separating space of the first cyclonic separator;
an air intake centrally located along the first longitudinal axis of the first cyclonic separator;
an inlet passage in fluid communication with the air intake and at least partially received in the first cyclonic separator;
a guiding passage communicated with the inlet passage and the first cyclonic separator respectively, wherein a fluid introduced through the inlet passage is tangentially guided outwardly into the interior separating space of the first cyclonic separator by the guiding passage.

14. A surface cleaning apparatus, comprising:
a dust barrel defining an opening in an upper end thereof and an air intake therein;
a cyclonic separating device disposed in the dust barrel, and comprising:
a first cyclonic separator defining a first longitudinal axis, a portion of the first cyclonic separator being constituted by an inner wall of the dust barrel, the inner wall defining an interior separating space;
a plurality of second cyclonic separators located downstream of the first cyclonic separator, arranged circumferentially around the first longitudinal axis in parallel, and integrally received in the first cyclonic separator, such that the plurality of second cyclonic separators are located wholly within the interior separating space of the first cyclonic separator;
an inlet passage communicated with the air intake and at least partially received in the first cyclonic separator;
a guiding passage communicated with the inlet passage and the first cyclonic separator respectively, wherein a fluid introduced through the inlet passage is tangentially guided outwardly into the interior separating space of the first cyclonic separator by the guiding passage; and
a dust collecting chamber located below the cyclonic separating device in the dust barrel to collect dust in the fluid separated by the cyclonic separating device;
wherein the air intake is centrally located along the first longitudinal axis of the first cyclonic separator;
wherein each of the plurality of second cyclonic separators has an air inlet formed on a side wall thereof, and the fluid is tangentially guided into the plurality of second cyclonic separators by the air inlet.

15. The surface cleaning apparatus according to claim 14 , wherein a fluid outlet of the guiding passage is disposed between two adjacent second cyclonic separators.

16. The surface cleaning apparatus according to claim 14 , wherein a portion of the inlet passage received in the first cyclonic separator is extended along the first longitudinal axis.

17. The surface cleaning apparatus according to claim 15 , wherein the fluid outlet is configured such that the fluid tangentially flows into the first cyclonic separator in a plane perpendicular to the first longitudinal axis.

18. The surface cleaning apparatus according to claim 14 , wherein a projection of the guiding passage in the plane perpendicular to the first longitudinal axis is substantially helical or arc-shaped.

19. The surface cleaning apparatus according to claim 16 , wherein at least one of the plurality of second cyclonic separators defines a second longitudinal axis parallel to the

Assignees

• Jiangsu Midea Cleaning Appliances Co Ltd
• Midea Group Co Ltd

Inventors

• Gu Youwei
• Niu Junying

Classifications

• B01D50/002

  Operations & Transport · mapped topic

• A47L9/1608 Primary

  Cyclonic chamber constructions · CPC title

• A47L9/1633

  Concentric cyclones · CPC title

• B01D45/12

  by centrifugal forces (centrifuges B04B; cyclones B04C) · CPC title

• A47L9/1616 Primary

  Multiple arrangement thereof · CPC title