Cyclonic Separation Apparatus

• US 20080155948A1
• Filed: 12/19/2007
• Published: 07/03/2008
• Est. Priority Date: 12/22/2006
• Status: Active Grant

• Current Assignee: Hoover Limited (Haier Group Company)
• Original Assignee: Hoover Limited (Haier Group Company)
• Inventors: Smith, David Benjamin
• Granted Patent: US 7,955,406 B2
• Time in Patent Office: Days
• US Class Current: 55/346
• CPC Class Codes: A47L 9/1625 for series flow
• CPC Class Codes: A47L 9/1641 for parallel flow
• CPC Class Codes: B04C 5/12 Construction of the overflow ducting, e.g. diffusing or spiral exits
• CPC Class Codes: B04C 5/26 for series flow
• CPC Class Codes: B04C 5/28 for parallel flow

Abstract

A cyclonic separation apparatus comprising at least two series connected separation stages and a receptacle for collecting material separated by the separation stages, is described. The first stage comprises a first cyclone separator and the second stage comprises a plurality of parallel connected second cyclone separators. The first and second separation stages are connected by at least one transfer duct which extends through the receptacle and transfers fluid that has been partly cleaned by the first separation stage, to the second separation stage.

Claims

1. A cyclonic separation apparatus comprising a first separation stage and second separation stage,

said first stage comprising a first cyclone separator, said second stage comprising a plurality of parallel connected second cyclone separators, said apparatus further comprising a receptacle for collecting material separated by said second cyclone separators,

said first and second separation stages arranged in fluid communication by at least one transfer duct which transfers fluid that has been partly cleaned by said first separation stage, to said second separation stage, wherein said at least one transfer duct extends through the receptacle.

2. Cyclonic separation apparatus as claimed in claim 1, wherein said at least one transfer duct extends substantially parallel to the rotational axis of said cyclone separators of said first and second separation stages.

3. Cyclonic separation apparatus as claimed in claim 1, wherein said second cyclone separators are arranged in a plurality of groups.

4. Cyclonic separation apparatus as claimed in claim 1, wherein said apparatus comprises a plurality of transfer ducts.

5. Cyclonic separation apparatus as claimed in claim 4, wherein each of said plurality of transfer ducts transfers fluid to one group of the plurality of groups of said second cyclone separators.

6. Cyclonic separation apparatus as claimed in claim 3, wherein said group of second cyclone separators are arranged equidistantly from the downstream end of the respective transfer duct.

7. Cyclonic separation apparatus as claimed in claim 1, wherein said receptacle is disposed partly above said first separation stage.

8. Cyclonic separation apparatus as claimed in claim 7, wherein said receptacle is disposed axially within the first separation stage.

9. Cyclonic separation apparatus as claimed in claim 1, wherein, said receptacle is funnel shaped.

10. Cyclonic separation apparatus as claimed in claim 1, wherein said first separation stage and said second separation stage are connected in series.