WO2006026414A2 - Dispositif de separation a cyclone pour aspirateur - Google Patents

Dispositif de separation a cyclone pour aspirateur Download PDF

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Publication number
WO2006026414A2
WO2006026414A2 PCT/US2005/030373 US2005030373W WO2006026414A2 WO 2006026414 A2 WO2006026414 A2 WO 2006026414A2 US 2005030373 W US2005030373 W US 2005030373W WO 2006026414 A2 WO2006026414 A2 WO 2006026414A2
Authority
WO
WIPO (PCT)
Prior art keywords
housing
inlet
separation device
cyclonic separation
outlet
Prior art date
Application number
PCT/US2005/030373
Other languages
English (en)
Other versions
WO2006026414A3 (fr
Inventor
Adrain C. Arnold
Mason Greene
John Arnold Arnold
Original Assignee
Euro-Pro Operating, Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US10/926,609 external-priority patent/US7565853B2/en
Priority claimed from US11/009,307 external-priority patent/US7354468B2/en
Priority claimed from US29/219,444 external-priority patent/USD541997S1/en
Priority claimed from US11/083,481 external-priority patent/US7419522B2/en
Application filed by Euro-Pro Operating, Llc filed Critical Euro-Pro Operating, Llc
Priority to EP05792335A priority Critical patent/EP1809159A2/fr
Publication of WO2006026414A2 publication Critical patent/WO2006026414A2/fr
Publication of WO2006026414A3 publication Critical patent/WO2006026414A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1608—Cyclonic chamber constructions
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1616—Multiple arrangement thereof
    • A47L9/1625—Multiple arrangement thereof for series flow
    • A47L9/1633—Concentric cyclones
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/165—Construction of inlets
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1658—Construction of outlets
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/16—Arrangement or disposition of cyclones or other devices with centrifugal action
    • A47L9/1683—Dust collecting chambers; Dust collecting receptacles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04—Tangential inlets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/103—Bodies or members, e.g. bulkheads, guides, in the vortex chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B04C5/185—Dust collectors
    • B04C5/187—Dust collectors forming an integral part of the vortex chamber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24—Multiple arrangement thereof
    • B04C5/26—Multiple arrangement thereof for series flow

Definitions

  • the invention relates to a cyclonic separation device and dirt collection container for a vacuum cleaner. More particularly, the device has a side opening door for emptying dirt and may be the main collection container or an appliance placed on the inlet pipe between the vacuum nozzle and the handle of the inlet pipe to increase the dirt separation and collection.
  • the container includes at least one cyclonic separation region with a decoupling ring for separating and collecting coarse dirt particles.
  • a second stage separating zone may be a frusto-conical cyclone for separating and collecting fine dirt particles.
  • Cyclonic separating devices for vacuum cleaners have been known for some time.
  • U.S. Patent No. 6,195,835 to Samsung Kwangju Electronics discloses a vacuum cleaner having a cyclone dust collecting device.
  • the cyclone dust collecting device includes a dirt separating cyclonic chamber with a shroud extending into the chamber having a plurality of holes of a size to prevent the dirt of a predetermined particle size from flowing into the air outlet.
  • the cyclonic separator includes a separation chamber having an upper cylindrical portion and a lower inverted truncated cone which defines a whirl chamber. Dirty air enters the interior of the cylindrical portion and travels down the truncated conical portion before exiting the top. The upside down truncated cone has a lower opening for dirt particles to fall through to be collected in the dirt collecting chamber below.
  • the collection chamber in both of the devices described above are relatively elongated.
  • the extended collection chamber enables the air flow to disperse naturally and return to the exhaust without significant re- entrainment.
  • the separation chamber must be removable to allow it to be emptied, cleaned or replaced for the ease of use.
  • Cyclonic vacuum cleaners having more that one cyclone unit have been known for some time.
  • European Patent No. EP 0 042 723 and U.S. Patent No. 4,593,429 to James Dyson disclose a vacuum suction cleaning device including two cyclone units in series operating successively to extract dirt particles from an air flow.
  • One of the two cyclones has a substantially frusto-conical shape serving to increase the velocity of the dirt particles so that the cyclone is capable of depositing the fine dust particles in a small diameter collection chamber relative to the diameter of the cone opening.
  • dirty air Prior to the air entering the cyclone, dirty air enters tangentially against the wall of a cylindrical outer chamber operating as a cyclone to remove coarse dirt particles from the dirty air entering the device.
  • a bagless cleaning device is disclosed in WO 99/42198 based on PCT/GB99/00507 by the applicant herein.
  • dirty inlet air is passed into the upper portion of a cyclone having a cylindrical cross-section and a lower frusto-conical section.
  • This cyclone separation stage is designed to separate fine dirt particles in a collection chamber below the cone opening.
  • the cylindrical portion of the device includes a transition zone connected to an adjacent side chamber for collection of coarse dirt particles.
  • coarse dirt is collected in an outer larger cylindrical chamber surrounding the inner frusto-conical cyclone separator.
  • U.S. Patent No. 6,192,550 to Sanyo Electric Co., Ltd. also discloses a vacuum cleaning device having a rotatable filter disposed in a cyclonic air separation chamber. This device is particularly effective, because the rotatable feature of the filter allows removal of dirt entrained in the filter into the bottom of the dirt cup for easy disposal when the dirt cup is removed for cleaning.
  • the contents of this patent are incorporated herein by reference.
  • a cyclonic separation device for a vacuum cleaner has an elongated housing with an inlet opening, an upper separation portion and a lower dirt collection portion and may have a side or bottom opening door.
  • a central outlet tube assembly extends into the upper portion of the separation portion of the housing.
  • a decoupling or disrupter ring is positioned on the inside wall of the housing between the separation portion and the collection portion.
  • the cyclonic separation device has an elongated cylindrical container including the cylindrical separation zone with an inlet at the upper region and a decoupling ring or short section of an inverted frusto-conical cone positioned mid-way down the container wall at the lower end of the separation zone.
  • a second stage fine dust separating cyclone may be coaxially mounted within the cylindrical container with a conical shroud surrounding the cone to allow air to travel to the large cone opening.
  • the cylindrical separator removes coarse dirt particles from the dirty inlet air before the air is fed into the fine dirt cyclone separator.
  • a cyclonic separation device for a vacuum cleaner that provides greater dirt separation over existing designs.
  • Yet another object of the invention is to provide a cyclonic separation device including a frusto-conical shroud with holes about an inner cyclonic separator for directing air to the large cone opening of the conical separator.
  • Still another object of the invention is to provide a shroud for dirt separation container including a plurality of holes angled in the direction of air flow about the shroud.
  • Still a further object of the invention is to provide a cyclonic device with a cylindrical housing for a mounting on an inlet pipe of a vacuum cleaner having a vortex vane in an inlet tube disposed parallel to the cylindrical housing that imparts spin to the inlet dirt laden air.
  • FIG. 1 is a perspective view of a cyclonic separation device with a clear substantially cylindrical cyclonic side wall with an inverted disrupter ring constructed and arranged in accordance with one embodiment of the invention
  • FIG. 2 is a side sectional view of an upright vacuum cleaner of the type disclosed in the prior art including a filter within a removable cylindrical cyclonic air separation and collection chamber;
  • FIG. 3 is a front sectional view of the upright vacuum cleaner illustrated hi FIG. 2;
  • FIG. 4 is a cross-sectional view of the cyclonic separation device of FIG. 1;
  • FIG. 5 is an exploded view of the elements of the cyclonic separation device cyclonic separation device of FIGS. 1 and 4;
  • FIG. 6 is an exploded view of the shroud and fine dirt separation assembly of FIGS, l and 4-5;
  • FIG. 7 is a cross-sectional view of a cyclonic separation device as shown in FIG. 1 with vanes below the disrupter ring in accordance with another embodiment of the invention;
  • FIG. 8 is a side elevation view of a vacuum cleaner with another embodiment of the removable cyclonic separation device constructed and arranged in accordance with the invention.
  • FIG. 9 is a cross-sectional view of the cyclonic separation device with disrupter ring, tube disk and inlet vortex vane of FIG. 8 constructed and arranged in accordance with the invention.
  • FIG. 10 is a cross-sectional view in schematic showing the air-flow pattern in the inlet and housing;
  • FIGS. 1 IA and 1 IB are cross-sectional views of the cyclonic separation device showing the dirt-laden air flow pattern in the cyclonic device of FIG. 10 taken along line 11-11;
  • FIG. 12 is a side elevation view of the outlet tube disc of FIG. 9 showing the outlet tube disk suspended by ribs constructed and arranged hi accordance with the invention;
  • FIG. 13 is a cross-sectional view of a cyclonic separation device in schematic with an outlet tube mounted on a post fixed to the bottom constructed and arranged in accordance with an alternative embodiment of the invention.
  • FIG. 14 is a partial cross-sectional view showing the shape of a disrupter ring in accordance with the invention.
  • a cyclonic separation device 101 has a cylindrical housing 102 with a central axis, an inlet 109 at the upper portion 102a and a lower collection portion 102b as shown in FIG. 1.
  • a central outlet tube 105 is provided having an inlet in the housing and an outlet in communication with the vacuum source.
  • Housing 102 has a cylindrical sidewall 103 with a disrupter ring 111 located on the inside wall at a position below the inlet of the outlet tube 105.
  • FIGS. 2 and 3 illustrate a side sectional view and a front section view of the upright vacuum cleaner of the type shown in U.S. Patent No.
  • a suction nozzle 202 for floors is formed at a lower portion of a main body 201 of the vertical type vacuum cleaner with a handle 203 for operating main body 201 at an upper portion thereof, all of which are formed in a uniform manner.
  • Suction nozzle 202 for floors has a suction inlet 204 at a bottom surface side and further incorporates therein a rotating brush 205 to face suction inlet 204.
  • Rotating brush 205 is connected to a rotating shaft of a motor fan 206 that is incorporated in the lower portion of main body 201 to be driven in a rotating manner.
  • a pair of laterally arranged front wheels 207 are attached frontward of the bottom surface of suction nozzle 202 for floors, while a pair of laterally arranged rear wheels 208 are attached rearward of a lower portion of main body 201.
  • a pipe 209 is attached on either side of the suction nozzle 202 for floors that communicates with suction inlet 204.
  • Pipe 209 extends upward along main body 201 to a tip end portion of a hose 210 in a freely attachable and detachable manner.
  • Hose 210 is disposed to the rear surface side of the main body 201 by means of a holding portion 211 arranged on a rear surface side of the handle 203 for operating the main body and is connected to a suction cylinder 212 which is formed to be shifted to either side with respect to a center of the rear surface side.
  • a dust-collecting device (dust-collecting unit) 220 is fitted to a central portion on the front surface side of the main body 201 of the vacuum cleaner in a freely attachable and detachable manner.
  • Dust-collecting device 220 includes cylindrical pre- filter 222 made of transparent resin or the like fitted into the interior of a substantially cylindrical dust-collecting case 221 made of transparent resin or the like, with a substantially cylindrical main filter 223 inside of pre-filter 222.
  • Dust-collecting case 221 is provided with a grip 224 at a central portion on a side that faces to the front when being attached to main body 201.
  • Grip 224 is so arranged as to extend in a longitudinal direction in a successive manner downward to handle 203 for operating main body 201 with a groove 225 is formed on a surface of the grip 224.
  • a handle 226 is rotatable for rotating the pre-filter 222 is attached to an upper side of grip 224 in such a manner that it is freely foldable in a transverse direction with respect to a rotating axis 227 thereof.
  • Handle 226 can be accumulated in groove 225 of grip 224 while a knob 226a of handle 226 is fitted to a concave portion 225a formed in groove 225 of grip 224 to be fixed thereat. It is possible to discharge dust accumulated within dust-collecting case 221 by holding grip 224, and the handle 226 can also be accumulated by efficiently utilizing the grip 224 which is not needed at the time of performing cleaning.
  • a clamp 228 is engaged with main body 201 when dust-collecting device 220 is fitted to main body 201 is provided on an upper side of the handle 226 of the dust- collecting device 220.
  • a bottom lid 232 is attached which is arranged to be freely openable and closeable by a hinge 231 provided in a lower portion of grip 224.
  • Bottom lid 232 is so arranged that by pushing a lever 233 provided in a lower portion of the grip 224, a clamp 234 formed on an opposing side of the dust-collecting case 221 to be connected to the lever 233 is disengaged from an engaging jaw 235 to thereby release a discharge outlet 236 for the dust.
  • a spiral rib 252 is formed as to extend in vertical directions on an outer periphery of the pre-filter 222.
  • the spiral rib 252 is disposed about pre-filter 222 so that dust which has accumulated and compressed within dust-collecting case 221 is pushed out in a direction of the discharge outlet when bottom lid 232 is opened for rotating the filter in a rightward direction.
  • Filter air is taken in by motor fan 206 via a filter 256 shown in FIG. 2 to be exhausted through an exhaust outlet 258 formed on a lower portion of a front surface of main body 201 to the exterior by being passed from motor fan 206 through an exhaust filter 257.
  • Dust which has been scraped up by rotating brush 205 of the suction nozzle 202 for floors passes through pipe 209 and hose 210 into dust-collecting case 221 through suction cylinder 212 located to be shifted in either direction with respect to a center of the rear surface side of main body 201 and is made to flow downward by being revolved along the inner wall thereof while large-sized dust (coarse dust) is deposited on the bottom.
  • Mesh 251 of pre-filter 222 for sucking air is formed to be located downward within dust-collecting case 221. Dust that has entered together with air through suction hole 230 located upward within the dust-collecting case 221 is pushed downward by being revolved at a high speed so as to be deposited on the bottom surface (bottom lid 232) of dust-collecting case 221 in a pressed condition.
  • small-sized dust enters into pre-filter 222 by passing through mesh 251 arranged in the lower portion of pre-filter 222 and is filtered by the pleat-like main filter 223.
  • main filter 223 only clean air enters main filter 223 to flow downward through the motor fan 206 to be finally exhausted through the exhaust outlet 258 to the exterior.
  • clamp 234 By pushing a lever 233 provided in the lower portion of the dust-collecting case 221, clamp 234 is detached whereby bottom Hd 232 is released to enable discharge of dust that has been accumulated in dust-collecting case 221. At this time, especially flock-like dust adheres to the inner wall of dust-collecting case 221 in a compressed state so that dust does not easily come off as it is.
  • handle 226 is rotated in a specified direction (in this case in a rightward direction) for rotating pre-filter 222 in a specified direction whereby spiral rib 252 provided on outer periphery of pre-filter 222 acts to push out dust such as flock-like dust in a compressed state so that easy discharge is enabled.
  • air separation and collection assembly or cyclonic separation device 101 includes a cylindrical container 102 formed with a substantially cylindrical sidewall 103, a selectively openable bottom 104 and a cover 106.
  • Bottom 104 is secured to sidewall 103 by a hinge 107 and is opened by a latch 108 for cleaning in the same manner as described in connection with the vacuum cleaner of FIGS. 2 and 3.
  • a dirt air inlet 109 is provided at the upper portion of sidewall 103.
  • a decoupler or disrupter ring 111 is positioned on the inside of sidewall 103 about mid-way along its height. Ring 111 is in the form of a short inverted frusto-conical projection having a lower opening 112 a portion of the distance from sidewall 103. Disrupting ring 111 and cover 106 define an air separation zone 113 within container 102. A frusto-conical shroud 116 surrounding a conical separation 117 shown in FIG. 4 is disposed on the axis of container 102 in zone 113. Ring 111 projects into cylinder 102 between about 20 to 50% of the annular distance between sidewall 103 and shroud 116. A coarse dirt collection region 114 is formed at the bottom of container 102 and is defined by a central column 118, sidewall 102 and bottom 104.
  • Disrupter ring 111 causes circulating air to be lifted of sidewall 103 and falling dirt to be collected within outer collection region 114 of container 102.
  • a second stage fine dirt separation zone 116 shown in FIG. 4 is coaxially disposed in a container 102 with center column 117 in which fine dirt particles are collected in a second collection region 119 defined by column 118.
  • FIG. 4 is a cross-sectional view of second stage shroud and cyclone assembly 119.
  • Shroud 116 and cyclone 117 are inverted frusto-conical in shape with a space 121 therebetween.
  • Shroud 116 has a plurality of holes 120 (shown in FIG. 6) to allow air to enter space 121 between shroud 116 and the outer side of cone 117.
  • Cone 117 has a large upper cone opening 122 and a lower small cone opening 123.
  • shroud 116 has a large upper cone opening 124 and a lower smaller cone opening 126 terminating at the top of central column 118.
  • a gasket 127 is provided at the top of column 118 to isolate space 121 from collection region 119 and isolate the inner region of cone 117 from air separation air 113.
  • a plurality of inlet vanes 130 for feeding air to the interior of cyclone 117 are placed between shroud opening 124 and cone opening 122.
  • Cyclone 117 is mounted on central column 118 by gasket 127.
  • Shroud 116 is conical in shape and configured to fit over cyclone 117 and provide a passage for air to flow through holes 120 to vanes 130 before entering conical separator 117.
  • Cyclone 117 extends from the top of container 102 to a point about three quarters of the height of container 102 with large cone opening 122 at the top and small cone opening 123 at the bottom.
  • a deflector plate 128 is mounted at small cone opening 123 supported by at least one rib 129.
  • Shroud 116 extends downwardly to gasket 127 that fits snugly into column 118.
  • Gasket 127 includes an outwardly extending skirt 131 below disrupter ring opening 112.
  • FIG. 5 is an exploded view of assembly 101 showing cylindrical container 102, bottom 104, hinge 107, latch 108, shroud 116, inlet 109, and cover 106.
  • FIG. 6 is an exploded view of the elements of shroud 116 and conical separator 117. Vanes 130 are shown at top opening 122 of cone 117.
  • Shroud 116 is assembled from four shroud plates 131 mounted on a shroud frame 138. Holes 120 in shroud plates are angled in the direction of air flow in separation zone 113 to facilitate passage into space 121. This also reduces collection of fine dirt on shroud 116 and in holes 120 of shroud 116 during operation.
  • FIG. 7 is a cross-sectional view of a modification of assembly 101.
  • a plurality of vanes 151 is disposed on container wall 103 below disrupter ring 111.
  • the remaining elements of assembly 101 are present in this embodiment.
  • Air entering the first stage separator rotates in space 113 between sidewall 103 and shroud 116 with large dirt particles passing through the space between ring 111 and skirt 131. These particles are collected on base 104 in region 114. Paddles or baffles may be placed on the inside surface of base 104 to prevent re-entrainment of dirt during operation of the separation device.
  • Air circulating in first stage separator zone 113 passes through holes 120 (shown in FIG. 6) in shroud 116. It then travels upwardly to a series of directional vanes
  • Second stage conical separator 117 has a large cone opening 122 at the top and a smaller cone opening 123 at the bottom.
  • the separation elements may be oriented in any direction.
  • Air then rotates downwardly along the inside wall of cone 117 and then turns upwardly to exit through an outlet 133 and passes through exhaust or outlet conduits on the outside of vessel 102. Fine dirt is expelled through lower cone opening 123 and collected in collection zone 119 at the base of column 118. Exiting clean air then passes through a filter, such as a HEPA filter, to a suction source such as motor fan 6 in the vacuum cleaner of FIG. 1.
  • a deflector plate 128 may be placed at the outside of small cone opening 123 to increase efficiency of title separation in conical separator 117.
  • holes 120 in shroud 116 are angled at about 45°. The more tangential the angle, the better, but generally between about 30 to 75 degrees.
  • Dirt separation and collection assembly 101 is interchangeable and usable with the type of vacuum cleaner as illustrated in FIGS. 2 and 3.
  • assembly 101 may be used with a stick vacuum or a canister vacuum cleaner.
  • dirty air enters towards the middle to upper portion of vessel 102 and exits through cap 106 and is transported to motor fan 206 at the base of main body 201.
  • FIG. 8 illustrates a further embodiment of this invention.
  • a canister-type vacuum cleaner 11 having a canister housing 12 including a vacuum source 12a.
  • a floor nozzle dirt collector 13 with a suction opening is connected to a rigid vacuum handle 17 that is connected to housing 12 by a flexible hose 16.
  • Vacuum handle 17 has an inlet pipe section 17a.
  • a cyclonic separation device 18, constructed and arranged in accordance with the invention, is mounted between rigid nozzle pipe section 14 and vacuum handle tube section 17a.
  • Cyclonic separation device 18 increases the cleaning efficiency by removing dirt from the inlet air before it reaches the filtering and collection elements in housing 12.
  • Cyclonic separation device 18 includes an elongated substantially cylindrical housing 15 having a central axis with an upper separation portion 19 and a lower collection portion 20. A central exhaust pipe 31 is provided above separation portion 19. Inlet air is fed into housing 15 by an inlet tube 21 mounted adjacent to housing 15 with the tubular axis parallel to the axis of housing 15. Cyclonic separation device 18 is mounted between rigid inlet tube 21 and a pipe section 17a. Dirt laden air from nozzle 13 is fed to separation portion 19 and exhaust air exits separation portion 19 through outlet tube 31.
  • cyclonic separation device 18 includes a vortex vane 22 in inlet tube 21.
  • Inlet tube 21 is adjacent to and parallel to cylindrical housing 15 and has an inlet opening 23 and an outlet opening 24 leading into the upper region of separation portion 19 of housing 15 through a transfer region 27 between inlet tube 21 and housing 15.
  • a lid or cap 26 is hingedly connected to the top of inlet tube 21 by a hinge or pin 26a to allow a user to remove any dirt or fibers that become entrained on vane 22 in inlet tube 21.
  • FIG. 9 further shows that housing 15 has a decoupler/disrupter ring 29 located on the inside wall between upper separation portion 19 and lower collection portion 20.
  • Cylindrical housing 15 also has an outlet tube disc 36, in lower collection portion 20, which is located on the axis of housing 15 below the opening to outlet tube 31 and below the height of disrupter ring 29. While side door 53 is shown on housing 15, it is within the scope of the invention that a side opening door may be utilized in a wide variety of containers to facilitate emptying separated and collected dirt collected in the container.
  • Lower collection portion 20 of housing 15 has a side door 53 that is mounted at the top to housing 15 by a hinge 30 with a release button 34 to facilitate the removal of collected dirt 32.
  • Side door 53 is secured to housing 15 to close collection portion 20 by a lip 51 that engages in a cooperating shoulder 52 of dirt collection portion 20 to secure side door 53 to dirt collection portion 20. Once user presses release button 34, lip 51 is released from housing 15 and pivots clockwise from collection portion 20 and opens at the bottom to allow for the easy removal of dirt collected therein.
  • FIG. 10 shows the air-flow pattern in inlet tube 21 and housing 15. Dirty air enters suction opening of nozzle 13 and passes through pipe 14 and enters inlet tube 21.
  • Vortex vane 22 causes air that enters to rotate axially in inlet tube 21. This forces the dirt particles in the air to move by centrifugal force towards the wall of inlet tube 21 while simultaneously being carried up towards transfer region 27. This allows the dirt particles to leave inlet tube 21 in a thin layer which then passes through transfer region 27 into upper separation portion 19 of cylindrical housing 15 as smoothly as possible. This reduces the amount of turbulence which can cause agglomerated dirt particles to dissociate and reduce efficiency.
  • the radial position of vane 22 may be adjusted by a user so that the thin layer of dirt particles leave the inlet tube without hitting lid 26 of inlet tube 21 and passes directly to transfer region 27. The efficiency of cyclonic separation device 18 is reduced, if the thin layer of dirt particles is deflected by hitting lid 26 or top side of inlet tube 21.
  • vortex vane 22 is an elongated sheet that extends axially within inlet tube 21 and is twisted, but does not cross inlet tube 21. Vane 22 progresses gradually to present a final angle of approximately 60 ° to the axis at outlet opening 24 of the inlet tube 21 after completing a full 360° turn. While a 60° angle is preferred, the angle may vary from 45° to 75°.
  • the vane itself, its orientation and its position are important to the operation of this apparatus, hi use, air with dirt first meets the vane with its axial orientation and curved end to prevent fibrous material becoming impacted at this point.
  • the vane then progresses gradually to present a final angle of approximately 60° to the axis at the egress after completing a full 360° radially. In this way the pressure loss in the unit is kept as low as possible whilst maintaining maximum angular motion.
  • the vane itself extends from the side wall of the tube out to the centre. It does not cross the tube and is therefore not subject to blockage unless presented with a very large solid object which cannot deform to pass around the vane blade.
  • Separation portion 19 and collection portion 20 form a substantially cylindrical housing 15 with transfer region 27 leading from outlet opening 24 of inlet tube 21 connecting to the upper separation portion 19 of housing 15.
  • Dirt in inlet tube 21 is ejected into separation portion 19 in a direction that ensures that it meets the inner wall of separation portion 19 in a tangential direction for collection in collection portion 20. Preferably, this is in the opposite direction of rotation than air rotating in inlet tube 21 as it passes over vortex vane 22.
  • decoupler/disrupter ring 29 is located on the inside wall of housing 15 at about the midpoint of housing 15.
  • separation portion 19 and collection portion 20 are about of equal height.
  • the lower portion of outlet tube 31 extends below the bottom of transfer region 27 a distance of "d" as shown in FIG. 10.
  • Distance d is not critical so long as the entrance to outlet tube 31 is below the bottom of transfer region 27 to avoid any short circuiting of air out of separation portion 19.
  • the distance between the bottom of outlet tube 31 and disrupter ring 29 is generally at least a length d, but may be as long as a distance 5 times d, with a distance of 1.5 to 3 times d being a preferred range.
  • Disrupter ring 29 is a curved or a frusto-ovoid shape to force the air flow to break away from the inner wall of housing 15. When vacuum source 12a in canister 12 is on, air is drawn from separation portion 19 through upper conduit outlet tube 31.
  • Collection portion 20 should be at least 50 percent of the length of separation portion 19 and may be as long as desired. In the illustrated embodiment collection chamber 20 is about equal to the length of separation portion 19. A longer collection chamber provides more room to collect dirt.
  • Collection portion 20 also includes outlet tube disc 36 that is located on the axis of cylindrical housing 15 below the opening to outlet tube 31 and below the height of disrupter ring 29.
  • outlet tube disc 36 is suspended from the lower open end of outlet tube 31 by a plurality of ribs 37.
  • Outlet tube disc 36 serves to limit turbulence in lower collection portion 20 and prevent re-entrainment of dirt that has fallen into collection portion 20 into outlet tube
  • outlet tube disc 36 is positioned below disrupter ring 29 a distance about equal to the width of transfer region 27 shown by a width w in FIGS. HA and HB for maximum effectiveness. By providing this, any dirt or debris that passes through transfer region 27 can pass by outlet tube disk 36 and fall in collection portion 20.
  • FIGS. HA and 11B are top cross-sectional views of the cyclonic separation device 18 that shows the direction of the rotation of air flow.
  • an arrow B shows incoming air flow in inlet tube 21 to be in a counter-clockwise direction. This airflow is reversed in separation housing 15 as shown by an arrow C after passing through. It is also possible to arrange the outlet opening of inlet tube 21 at transfer region 27 so that air flow can be maintained in the same direction in the inlet tube 21 and the separation housing 15 as shown in FIG. HB.
  • incoming air rotates in a counter ⁇ clockwise direction shown by an arrow B' and in separation housing 15 as shown by an arrow C.
  • FIG. 12 illustrates the embodiment wherein an outlet tube disc 36 is suspended from the lower open end of outlet tube 31 by ribs 37.
  • Outlet tube disc 36 limits turbulence in the collection portion 20 of separation housing 15 and prevents re- entrainment of dirt that has fallen into collection portion 20, into outlet tube 31.
  • an outlet tube disc 36 is supported by a stem 46 which is attached to the bottom collection portion 20 as illustrated in FIG 13.
  • dirt-laden air is introduced and dirt is separated m the same manner as in the embodiment illustrated in FIG. 9.
  • disrupter ring 29 is shown in a detailed cross-section view.
  • Ring 29 extends inwardly from sidewall 41 in a gradual arc or curved surface 42 extending outwardly to a relatively sharp edge 43.
  • the shape shown is frusto-ovoid. This insures separation of air flow from wall 41 of housing 15.
  • Disrupter ring 29 may be other shapes man frusto-ovoid. It may be a flange with sharp defined edges. However, in this case dirt may tend to collect at the inner regions of the crease at sidewall 41 and ultimately present the smooth arc shape to the air flow in FIG. 14.
  • Ring 29 should extend inwardly about 10 to 20 percent of the diameter of cylindrical housing 15.

Abstract

[0091] Dispositif de séparation à cyclone pour aspirateur comportant un carter oblong avec un orifice d'entrée, une partie supérieure de séparation et une partie inférieure de collecte de la saleté munie d'une trappe latérale. Un ensemble tube central pénètre dans au moins le haut de la partie supérieure de séparation. Une bague de découplage ou de désolidarisation est disposée sur la paroi intérieure du carter entre les parties de séparation et de collecte. La bague de découplage ou une courte section de tronc de cône inversée est disposée à mi-chemin de la paroi du récipient au bas de la zone de séparation. Un cyclone de séparation de second étage pour séparation des poussières fines peut être monté coaxialement à l'intérieur du récipient cylindrique avec un capot conique entourant le cône de manière à conduire l'air vers la grande ouverture du cône.
PCT/US2005/030373 2004-08-26 2005-08-26 Dispositif de separation a cyclone pour aspirateur WO2006026414A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05792335A EP1809159A2 (fr) 2004-08-26 2005-08-26 Dispositif de separation a cyclone pour aspirateur

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US10/926,609 2004-08-26
US10/926,609 US7565853B2 (en) 2004-08-26 2004-08-26 Compact cyclonic separation device
US11/009,307 US7354468B2 (en) 2004-08-26 2004-12-10 Compact cyclonic separation device
US11/009,307 2004-12-10
US29/219,444 USD541997S1 (en) 2004-12-15 2004-12-15 Cyclonic separation device
US29/219,444 2004-12-15
US11/083,481 2005-03-18
US11/083,481 US7419522B2 (en) 2005-03-18 2005-03-18 Dirt separation and collection assembly for vacuum cleaner

Publications (2)

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WO2006026414A2 true WO2006026414A2 (fr) 2006-03-09
WO2006026414A3 WO2006026414A3 (fr) 2007-08-02

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