EP 2308360 A3 20140226 - Improved cyclonic chamber for air filtration devices
Title (en)
Improved cyclonic chamber for air filtration devices
Title (de)
Verbesserte Zyklonkammer für Luftfilterungsvorrichtung
Title (fr)
Chambre cyclonique améliorée pour dispositifs de filtration d'air
Publication
Application
Priority
US 57640409 A 20091009
Abstract (en)
[origin: EP2308360A2] A cyclonic chamber (1) for use in air filtration devices (2). The chamber (1) includes an apex (3) opposite a base (4) with sidewalls (5) extending therebetween. The cyclonic chamber (1) is preferably parabolic in cross-section or tubular with a hemi-spherical cap. The base (4) contains an outflow passage (12) and a conical filter (9) extending therefrom. An inflow passage (13) is provided proximate the apex (13). The inflow and outflow passages (13,12) are parallel but not aligned. The chamber interior is smooth. The smooth interior and offset relationship of the inflow and outflow passages (13,12) causes air to take a cyclonic path between the inflow passage (13) and the filter (9). Debris in the airstream is pushed outward - away from the filter (9) - by centripetal force. Eddies form proximate the base (4). Debris escapes the airstream there, where it either remains or, depending upon the chamber's orientation relative to gravity, falls back into the airflow where it is again directed away from the filter (9).
IPC 8 full level
CPC (source: EP)
A47L 5/24 (2013.01); A47L 9/1608 (2013.01); A47L 9/165 (2013.01); A47L 9/1666 (2013.01); B04C 2009/004 (2013.01)
Citation (search report)
- [A] EP 1523916 A2 20050420 - BLACK & DECKER INC [US]
- [A] EP 1977672 A1 20081008 - BLACK & DECKER INC [US]
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated extension state (EPC)
BA ME RS
DOCDB simple family (publication)
EP 2308360 A2 20110413; EP 2308360 A3 20140226; EP 2308360 B1 20150624; CN 102038464 A 20110504; CN 102038464 B 20131225; HK 1153369 A1 20120330; JP 2011078757 A 20110421; JP 5649390 B2 20150107
DOCDB simple family (application)
EP 10251559 A 20100907; CN 201010231608 A 20100715; HK 11107716 A 20110725; JP 2010217836 A 20100908