# US 9,872,592 B2 · Cyclonic separation device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,872,592 B2 - Document ID: US9872592B2 - Status: Granted - Kind: B2 - Application number: 14/784,371 - Filed: 2015-01-05 - Published: 2016-12-08 - Granted: 2018-01-23 - Earliest claimed: 2014-01-28 - Assignees: Koninklijke Philips N.V. - Applicants: Koninklijke Philips N.V. - Inventors: Bastian Cornelis Kleine-Doepke; Johannes Tseard Van Der Kooi; Bart Meulenbeld; Arnoldus Cornelis Wessels - Web page: https://patentgrep.com/patent/US9872592B2 ## CPC - A47L 9/1658: {Construction of outlets} - B01D 45/12: by centrifugal forces (centrifuges B04B; cyclones B04C) - B01D 45/16: 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} - B01D 50/20: Combinations of devices covered by groups B01D45/00 and B01D46/00 - B04C 5/103: Bodies or members, e.g. bulkheads, guides, in the vortex chamber (cores B04C5/107) - B04C 5/181: Bulkheads or central bodies in the discharge opening - A47L 9/1608: {Cyclonic chamber constructions} - B04C 5/04: Tangential inlets - A47L: DOMESTIC WASHING OR CLEANING (brushes A46B; cleaning quantities of bottles or of other hollow articles of one kind B08B9/00; laundry D06F); SUCTION CLEANERS IN GENERAL (cleaning in general B08) - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - B04C: APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES ({centrifugal separation of water from steam B01D45/12;} jet mills B02C19/06; {wind sifters B07B7/00;} cyclonic type combustion apparatus F23; {vortex burners for cyclone-type combustion apparatus F23D1/02; cyclonic type combustion apparatus for gas turbines F23R3/00}) ## Abstract A separation device for separating a cyclone chamber from a collection chamber of a cyclonic separator has a guide member that includes a leading end, a trailing end, and a guide surface. The guide surface guides debris entrained in an airflow in the cyclone chamber in a helical path about an axis of the separation device and into the collection chamber. The guide surface extends about the axis of the separation device through an angle of less than 360 degrees for allowing debris in the cyclone chamber to also pass into the collection chamber from the cyclone chamber in an axial direction. The leading end of the guide member is at an angle between 30° and 60° towards the cyclone chamber with respect to the axis of the separation device to promote a helical flow of air and debris flowing over the guide surface. ## Claims ### Claim 1 A separation device comprising: a cyclone chamber having a leading end and a trailing end; a collection chamber; and a guide surface for guiding debris entrained in an airflow in the cyclone chamber in a helical path about a central axis of the separation device and into the collection chamber, wherein the guide surface extends continuously about the central axis of the separation device to a first angle from the leading end to the trailing end of between 270 degrees and 340 degrees defining a flow path for allowing debris in the cyclone chamber to also pass into the collection chamber from the cyclone chamber in an axial direction of the separation device, wherein the guide surface is angled towards the cyclone chamber with respect to the central axis of the separation device such that the guide surface is sloped along a longitudinal direction of the separation device forming an angle a between the guide surface and the central axis of the separation device that continuously increases about the central axis of the separation device in a direction from the leading end to the trailing end, and wherein the angle α at the leading end has a first value α1 between 30 degrees and 60 degrees and the angle α at the trailing end has a second value α2 greater than the first value α1. ### Claim 2 (depends on 1) The separation device according to claim 1, wherein at least a portion of the guide surface follows a substantially helical path about the central axis of the separation device. ### Claim 3 (depends on 1) The separation device according to claim 1, wherein the first value α1 of said angle a at the leading end is substantially 45 degrees. ### Claim 4 (depends on 1) The separation device according to claim 1, wherein the first value α2 of the angle α at the trailing end is substantially 90 degrees such that the trailing end extends substantially perpendicular to the central axis of the separation device. ### Claim 5 (depends on 1) The separation device according to claim 1, having an opening both in a radial direction for allowing debris entrained in an airflow that flows in a helical path about the central axis to exit the separation device, and in the axial direction for allowing debris to exit the separation device under the effect of gravity. ### Claim 6 (depends on 1) The separation device according to claim 1, further comprising a support member, and wherein the guide surface extends from a portion of a periphery of the support member. ### Claim 7 (depends on 6) The separation device according to claim 6, further comprising a blocking member that extends from the support member into the collection chamber. ### Claim 8 (depends on 1) The separation device according to claim 1, wherein the separation device comprises a peripheral wall. ### Claim 9 (depends on 8) The separation device according to claim 8, wherein the peripheral wall is configured to sit flush to a peripheral wall of the cyclone chamber and/or a peripheral wall of the collection chamber. ### Claim 10 A cyclonic separator comprising a separation device, wherein the separation device comprises: a cyclone chamber having a leading end and a trailing end; a collection chamber; and a guide surface for guiding debris entrained in an airflow in the cyclone chamber in a helical path about a central axis of the separation device and into the collection chamber, wherein the guide surface extends continuously about the central axis of the separation device to a first angle from the leading end to the trailing end of between 270 degrees and 340 degrees defining a flow path for allowing debris in the cyclone chamber to also pass into the collection chamber from the cyclone chamber in an axial direction of the separation device, wherein the guide surface is angled towards the cyclone chamber with respect to the central axis of the separation device such that the guide surface is sloped along a longitudinal direction of the separation device forming an angle a between the guide surface and the central axis of the separation device that continuously increases about the central axis of the separation device in a direction from the leading end to the trailing end, and wherein the angle α at the leading end has a first value α1 between 30 degrees and 60 degrees and the angle α at the trailing end has a second value α2 greater than the first value α1. ### Claim 11 A vacuum cleaner comprising a cyclonic separator having a separation device, a cyclone chamber and a collection chamber, wherein the separation device comprises: a leading end; a trailing end; and a guide surface for guiding debris entrained in an airflow in the cyclone chamber in a helical path about a central axis of the separation device and into the collection chamber, wherein the guide surface extends continuously about the central axis of the separation device to a first angle from the leading end to the trailing end of between 270 degrees and 340 degrees defining a flow path for allowing debris in the cyclone chamber to also pass into the collection chamber from the cyclone chamber in an axial direction of the separation device, wherein the guide surface is angled towards the cyclone chamber with respect to the central axis of the separation device such that the guide surface is sloped along a longitudinal direction of the separation device forming an angle a between the guide surface and the central axis of the separation device that continuously increases about the central axis of the separation device in a direction from the leading end to the trailing end, and wherein the angle α at the leading end has a first value α1 between 30 degrees and 60 degrees and the angle α at the trailing end has a second value α2 greater than the first value α1. ### Claim 12 (depends on 11) The vacuum cleaner according to claim 11, wherein at least a portion of the guide surface follows a substantially helical path about the central axis of the separation device. ### Claim 13 (depends on 11) The vacuum cleaner according to claim 11, wherein the first value α1 of said angle α at the leading end is substantially 45 degrees. ### Claim 14 (depends on 11) The vacuum cleaner according to claim 11, wherein the first value α2 of the angle α at the trailing end is substantially 90 degrees such that the trailing end extends substantially perpendicular to the central axis of the separation device. ### Claim 15 (depends on 11) The vacuum cleaner according to claim 11, having an opening both in a radial direction for allowing debris entrained in an airflow that flows in a helical path about the central axis to exit the separation device, and in the axial direction for allowing debris to exit the separation device under the effect of gravity. ### Claim 16 (depends on 11) The vacuum cleaner according to claim 11, wherein the first angle is 315 degrees and the guide surface extends continuously about the central axis of the separation device to the first angle of 315 degrees. ### Claim 17 (depends on 11) The vacuum cleaner according to claim 11, further comprising a support member, and wherein the guide surface extends from a portion of a periphery of the support member. ### Claim 18 (depends on 17) The vacuum cleaner according to claim 17, further comprising a blocking member that extends from the support member into the collection chamber. ### Claim 19 (depends on 11) The vacuum cleaner according to claim 11, wherein the separation device comprises a peripheral wall. ### Claim 20 (depends on 19) The vacuum cleaner according to claim 19, wherein the peripheral wall is configured to sit flush to a peripheral wall of the cyclone chamber and/or a peripheral wall of the collection chamber.