Cyclonic separator device

Patent metadata

Field	Value
Publication number	US-2020121145-A1
Application number	US-201816624688-A
Country	US
Kind code	A1
Filing date	Jun 15, 2018
Priority date	Jun 19, 2017
Publication date	Apr 23, 2020
Grant date	—

Abstract

A cyclonic separator device for removing dust or debris from dirt-laden air, the device including: a first separating chamber for separating relatively coarse dust or debris from the dirt-laden air; an inlet through which dirt-laden air is drawn into the first separating chamber; a first dirt collection chamber in communication with the first separating chamber; a shroud; a second separating chamber positioned generally within the shroud for separating relatively fine dust or debris from the dirt-laden air cleaned by the first separating chamber, a second dirt collection chamber in communication with the second separating chamber; an outlet through which cleaner air exits the second separating chamber; wherein the first separating chamber includes a generally cylindrical portion with a central axis and wherein the inlet is configured to direct the incoming dirt-laden air into said generally cylindrical portion such that it travels circumferentially around an inner surface of the first separating chamber, wherein the shroud is positioned generally centrally of the generally cylindrical portion of the first separating chamber and the shroud has a generally cylindrical portion with openings therein for the passage of air therethrough towards the second separating chamber, wherein the second dirt separating chamber includes: an inlet through which cleaned dirt-laden air exiting the first separating chamber is drawn into the second separating chamber; a generally frusto-conical portion with a central axis and the frusto-conical portion has an end-part in communication with the second dirt collection chamber through which fine dust or debris exits therethrough into the second dirt collection chamber, and wherein the inlet of the second separating chamber is configured to direct the incoming said cleaned dirt-laden air such that it travels circumferentially around an inner surface of the generally frusto-conical portion, and wherein the second dirt collection chamber includes: a first portion which surrounds an outer surface of the end part of the frusto-conical portion to define a space S1 therebetween; and a second portion connected to the first portion, wherein the first portion has a greater cross-sectional area than the second portion.

First claim

1 . A cyclonic separator device for removing dust or debris from dirt-laden air, the device including:
a first separating chamber for separating relatively coarse dust or debris from the dirt-laden air; an inlet through which dirt-laden air is drawn into the first separating chamber; a first dirt collection chamber in communication with the first separating chamber; a shroud; a second separating chamber positioned generally within the shroud for separating relatively fine dust or debris from the dirt-laden air cleaned by the first separating chamber, a second dirt collection chamber in communication with the second separating chamber; an outlet through which cleaner air exits the second separating chamber; wherein the first separating chamber includes a generally cylindrical portion with a central axis and wherein the inlet is configured to direct the incoming dirt-laden air into said generally cylindrical portion such that it travels circumferentially around an inner surface of the first separating chamber, wherein the shroud is positioned generally centrally of the generally cylindrical portion of the first separating chamber and the shroud has a generally cylindrical portion with openings therein for the passage of air therethrough towards the second separating chamber, wherein the second dirt separating chamber includes:
an inlet through which cleaned dirt-laden air exiting the first separating chamber is drawn into the second separating chamber;
a generally frusto-conical portion with a central axis and the frusto-conical portion has an end-part in communication with the second dirt collection chamber through which fine dust or debris exits therethrough into the second dirt collection chamber, and wherein the inlet of the second separating chamber is configured to direct the incoming said cleaned dirt-laden air such that it travels circumferentially around an inner surface of the generally frusto-conical portion, and
wherein the second dirt collection chamber includes:
a first portion which surrounds an outer surface of the end part of the frusto-conical portion to define a space S1 therebetween; and
a second portion connected to the first portion,
wherein the first portion has a greater cross-sectional area than the second portion.

2 . A cyclonic separator device according to claim 1 wherein said first portion of the second dirt collection chamber extends into a space S2 defined by the inner surface of the generally cylindrical portion of the shroud having said openings defined therein.

3 . A cyclonic separator device for removing dust or debris from dirt-laden air, the device including:
a first separating chamber for separating relatively coarse dust or debris from the dirt-laden air; an inlet through which dirt-laden air is drawn into the first separating chamber; a first dirt collection chamber in communication with the first separating chamber; a shroud; a second separating chamber positioned generally within the shroud for separating relatively fine dust or debris from the dirt-laden air cleaned by the first separating chamber, a second dirt collection chamber in communication with the second separating chamber; an outlet through which cleaner air exits the second separating chamber; wherein the first separating chamber includes a generally cylindrical portion with a central axis and wherein the inlet is configured to direct the incoming dirt-laden air into said generally cylindrical portion such that it travels circumferentially around an inner surface of the first separating chamber, wherein the shroud is positioned generally centrally of the generally cylindrical portion of the first separating chamber and the shroud has a generally cylindrical portion having a height D with openings therein for the passage of air therethrough towards the second separating chamber, wherein the second separating chamber includes:
an inlet through which cleaned dirt-laden air exiting the first separating chamber is drawn into the second separating chamber;
a generally frusto-conical portion with a central axis and the generally frusto-conical portion has an end part in communication with the second dirt collection chamber through which fine dust or debris exits therethrough into the second dirt collection chamber, and wherein the inlet of the second separating chamber is configured to direct the incoming said cleaned dirt-laden air such that it travels circumferentially around an inner surface of the generally frusto-conical portion, and
wherein a first portion of the second dirt collection chamber surrounds an outer surface of the end part of the generally frusto-conical portion to define a space S1 therebetween and said first portion of the second dirt collection chamber extends into a space S2 defined by the inner surface of the generally cylindrical portion of the shroud having said openings therein.

4 . A cyclonic separator device according to claim 3 wherein the first portion of the second dirt collection chamber extends a height H into said space S2, and wherein the ratio (H:D) between height H and the height D of the generally cylindrical portion of the shroud is defined by the range:
1:1.2≤H:D≤1:4.5.

5 . A cyclonic separator according to claim 4 wherein (H:D) is defined by the range:
1:1.6≤H:D≤1:2.0

6 . A cyclonic separator according to claim 5 wherein (H:D) is defined by the range:
1:1.6≤H:D≤1:1.8.

7 . A cyclonic separator according to claim 6 wherein (H:D) is or is about 1:1.7.

8 . A cyclonic separator device according to any one of claims 4 to 7 wherein the second dirt collection chamber includes a second portion connected to the first portion,
wherein the first portion has a greater cross-sectional area than the second portion.

9 . A cyclonic separator device according to any preceding claim wherein the first portion of the second dirt collection chamber has an end which is in sealed engagement or substantially sealed engagement with the end part of the frusto-conical portion.

10 . A cyclonic separator device according to any preceding claim wherein the first portion of the second dirt collection chamber has a height H about its central axis, and the generally frusto-conical portion of the second separating chamber has a height H2 along its central axis, and wherein the ratio (H:H2) between them is defined by the range:
1:1.2≤H:H2≤1:7.

11 . A cyclonic separator according to claim 10 wherein the ratio (H:H2) is defined by the range:
1:1.3≤H:H2≤1:5.

12 . A cyclonic separator according to claim 10 or 11 wherein the ratio (H:H2) is defined by the range
1:1.4≤H:H2≤1:4.5.

13 . A cyclonic separator according to claim 10 , 11 or 12 wherein the ratio (H:H2) is or is about 1:4.3.

14 . A cyclonic separator according to any one of claims 3 to 13 wherein:
the first portion of the second dirt collecting chamber is generally cylindrical and has a diameter D1 across its inner surface; and
the second portion of the second dirt collecting chamber is generally cylindrical and has a diameter D2 across its inner surface, wherein the ratio (D1:D2) is defined by the range:

1.05:1≤D1:D2≤1.60:1.

15 . A cyclonic separator according to claim 14 wherein the ratio (D1:D2) is defined by the range:
1.07:1≤D1:D2≤1.20:1.

16 . A cyclonic separator according to claim 15 wherein the ratio (D1:D2) is defined by the range:
1.07:1≤D1:D2≤1.15:1.

17 . A cyclonic separator according to claim 16 wherein the ratio (D1:D2) is defined by the range:
1.07:1≤D1:D2≤1.13:1.

18 . A cyclonic

Assignees

• Tti Macao Commercial Offshore Ltd

Inventors

• Pougher Simon Matthew

Classifications

• A47L9/1608

  Cyclonic chamber constructions · CPC title

• A47L9/242

  Hose or pipe couplings · CPC title

• A47L9/1633 Primary

  Concentric cyclones · CPC title

• B04C5/187

  forming an integral part of the vortex chamber · CPC title

• B04C5/26

  for series flow · CPC title