WO2009104959A1 - Epurateur de gaz destiné à séparer au moins en partie des composants entraînés d’un écoulement de gaz contaminé - Google Patents

Epurateur de gaz destiné à séparer au moins en partie des composants entraînés d’un écoulement de gaz contaminé Download PDF

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Publication number
WO2009104959A1
WO2009104959A1 PCT/NL2009/050070 NL2009050070W WO2009104959A1 WO 2009104959 A1 WO2009104959 A1 WO 2009104959A1 NL 2009050070 W NL2009050070 W NL 2009050070W WO 2009104959 A1 WO2009104959 A1 WO 2009104959A1
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WO
WIPO (PCT)
Prior art keywords
gas
separating
separating space
cleaner
space
Prior art date
Application number
PCT/NL2009/050070
Other languages
English (en)
Inventor
Robert Schook
Original Assignee
Jadyba B.V.
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
Application filed by Jadyba B.V. filed Critical Jadyba B.V.
Publication of WO2009104959A1 publication Critical patent/WO2009104959A1/fr

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Classifications

    • 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
    • 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
    • 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
    • A47L9/1641—Multiple arrangement thereof for parallel flow
    • 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
    • B04C5/08—Vortex chamber constructions
    • 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
    • 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
    • B04C5/28—Multiple arrangement thereof for parallel flow
    • 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
    • B04C5/30—Recirculation constructions in or with cyclones which accomplish a partial recirculation of the medium, e.g. by means of conduits
    • 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
    • B04C7/00—Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00
    • 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
    • B04C2005/136—Baffles in the vortex finder
    • 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
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B04C2009/004—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with internal filters, in the cyclone chamber or in the vortex finder

Definitions

  • Gas cleaner for at least partially separating entrained components from a contaminated gas flow
  • the invention relates to a gas cleaner, more specifically a vacuum-cleaner, for at least partially separating entrained components from a contaminated gas flow, comprising: a feed duct for drawing in the contaminated gas flow for separating; at least one separating space for separating the contaminated gas flow which is circle-symmetrical in axial direction and connected to the feed duct on a proximal side, which space is provided with a gas discharge for discharging a cleaned gas flow and a component discharge located substantially in the central axis of the separating space for discharging separated components; a component collection space connecting to the component discharge of the at least one separating space for collecting the separated components; and a pump connecting to the gas discharge for suctioning the contaminated gas through the separating space.
  • the components for separating are in this context understood to mean solids, liquid particles and a combination of solids and liquid particles.
  • the separation of components from a gas flow has very varied applications.
  • the cleaning of gas flows is for instance known from applications such as vacuum cleaners, flue gas cleaners and air-conditioning installations. Separation of components such as dirt of a substantial size is relatively simple.
  • Existing gas cleaners, and more in particular vacuum cleaners usually make use of a filter bag (vacuum cleaner bag), this having the drawback, among others, that this filter bag produces more resistance as it becomes more full.
  • a vacuum cleaner with a substantially full vacuum cleaner bag will thus have less suction force than the same vacuum cleaner with an empty vacuum cleaner bag.
  • gas cleaners more specifically vacuum- cleaners, without filter bags have been developed which make use of one or more tangential cyclones, whereby the heavier fraction (for instance the dirt in the case of a vacuum cleaner) is separated from the contaminated airflow by rotation.
  • gas cleaners are EP 0 042 723 and GB 2 426 726.
  • Gas cleaners, and more particularly vacuum cleaners, of this type are also commercially available as such.
  • the present invention has for its object to increase the efficiency and/or the effectiveness of the type of gas cleaner described in the preamble, and more particularly vacuum cleaners, for at least partially separating entrained components from a contaminated gas flow.
  • the invention provides for this purpose a gas cleaner, and more specifically a vacuum- cleaner, of the type stated in the preamble, with the feature that the feed duct makes multiple connections to the at least one separating space and that the at least one circle- symmetrical separating space is provided on the inner side with rotation means in the form of at least two curved guides for setting the gas flow into rotation in the separating space.
  • the separating space for separating the contaminated gas flow is preferably provided on the proximal side with the gas discharge.
  • the orientation of the curved guides which will generally take a blade-like form, is such that they change the flow direction in at least one direction in order to finally result in a flow direction which is substantially tangential (relative to the separating space).
  • the feed duct can thus connect axially or radially to the at least one separating space.
  • the measures according to the present invention thus result in an increased level of separation (i.e. a better separation of gas and components) and/or in a lower pressure drop than in the tangential cyclones as applied in the prior art gas cleaners (vacuum- cleaners). It is thus possible to keep the same level of separation of the improved gas cleaner (vacuum- cleaner) and the conventional gas cleaner (vacuum-cleaner) wherein this then provides the advantage that the pressure drop required for this purpose becomes smaller (up to 30 - 40% or even more) when the proposed improvements are made. Less pressure drop can be used to lower the required power of the vacuum- blower and thus results in less energy consumption.
  • the existing tangential cyclone gas cleaners (in particular tangential cyclone vacuum cleaners) have a compartment connected to the component discharge (underflow) to which the components are discharged as a result of the gravitational force (IG).
  • IG gravitational force
  • the separating action of a vortex in the separating space is many times greater than IG, which means that the force for displacing the components from the separating space to the collection compartment is relatively small.
  • a further increase in the efficiency and/or effectiveness can be obtained by having the component collection space connect to the gas discharge for the cleaned gas flow. This creates a so-called recycle flow.
  • recycle flow This creates a so-called recycle flow.
  • the result of this measure is that a (limited) reduction in the pressure occurs in the component collection space, whereby a (limited) gas flow will flow through the component discharge. The limited gas flow thus ensures that the components for removal are discharged more easily from the separating space.
  • the components By generating a "recycle flow" in the multi-port non-tangential cyclone the components now become much more easily removable from the separating space with the gas cleaner, more specifically a vacuum-cleaner, according to the invention. It also becomes possible to position the gas cleaner (vacuum- cleaner) such that the component collection space is situated adjacently of or even above the separating space. This can be advantageous in mobile multi-port non-tangential cyclone gas cleaners such as vacuum cleaners, which can thus continue to function irrespective of their orientation.
  • constructions of gas cleaners have already been described (inter alia in US 2004/0144070) in which a component collection space is situated above the separating space, the components here too have to be discharged to the component collection space by the gravitational force.
  • the passage of the connection of the component collection space to the gas discharge for the cleaned gas flow is preferably smaller than the passage of the gas discharge for the cleaned gas flow. This measure is desirable in order to prevent such a large recycle flow being generated that components are fed back to the connection of the feed duct to the proximal side of the separating space. Components are thus prevented from being "circulated", which would result in a reduced efficiency and/or effectiveness of the gas cleaner.
  • This feedback of components can further also be prevented by providing the passage of the connection of the component collection space to the gas discharge for the cleaned gas flow with a filter.
  • This filter prevents components collected in the component collection space being able to leave it again.
  • a filter here for can have any desired form; for instance a static filter and/or a cyclone filter.
  • connection of the component collection space to the gas discharge does not necessarily have to connect to the gas discharge of the separating space; it can also be located (optionally partially) in the separating space (this is also referred to as an "internal recycle").
  • the connection of the component collection space to the gas discharge does not have to lead into the component collection space but can also be feed into an individual separating space. This means that the connection for the recycle flow then connects to, or close to, the component discharge(s) located on the distal side of the separating space(s). This results in the same effect in the separating space; only the final part of the transport path of the components into the component collection space is then no longer supported by the recycle flow.
  • the gas cleaner more specifically a vacuum- cleaner, comprises a plurality of separating spaces placed parallel to each other.
  • the capacity of the gas cleaner can hereby be increased. This thus makes it possible to give the gas cleaner a relatively small dimension.
  • the feed duct connects to the at least one separating space via a pre-separator.
  • This pre-separator can comprise a filter and/or a pre-separator collection space.
  • a compact and aesthetic construction becomes possible in practice if the pre- separator is provided with a substantially cylindrical filter drum, which for instance encloses the separating spaces.
  • the pre-separator comprises a chamber in which the contaminated airflow for pre-separation is set into rotation.
  • the pre-separator can also be equipped with a filter.
  • This filter preferably takes the form of a substantially cylindrical filter drum lying between the chamber in which the air for pre-separation is set into rotation and the feed of the at least one separating space.
  • the pre-separator In order to store the fraction of larger components captured by the pre-separator, it is desirable that the pre-separator also be provided with a pre-separator collection space.
  • a (generally likewise curved) stabilizing element is positioned as part of the rotation means between two adjacent curved guides.
  • the at least one separating space is coupled releasably to the component collection space.
  • the component collection space can be opened in simple manner due to the releasable coupling, whereby the components captured in the component collection space can be removed.
  • the gas cleaner vacuum-cleaner
  • a further more compact construction becomes possible by integrating the housing with at least one separating space.
  • the separating space usually has a tapering form over at least a part of the length thereof.
  • the wall of such a separating space preferably encloses an angle with the central axis which is greater than 5°. In other words, the half cone angle of the separating space is greater than 5°.
  • the G-force in axial direction gradually increases by maintaining momentum in combination with the decreasing cross-section; this increases the efficiency of the separation.
  • the separating space it is further advantageous and possible to give the separating space a compact form such that it has a tapering form over at least part of the length thereof, the largest diameter of which is smaller than 100 mm.
  • This largest diameter of the separating space is found at the position where the gas flow has just left the curved guides, and is also referred to as the throat diameter. Even more preferably this largest diameter is smaller than 75 mm, 60 mm or even smaller than 50 mm. This results in a further reduction of the overall volume of the gas cleaner (vacuum-cleaner) and a greater separating force G.
  • At least one additional post- separator is placed connecting to the gas discharge for the cleaned gas flow located on the proximal side of the at least one separating space.
  • a post-separator can once again be formed by a cyclone (or a plurality of cyclones placed in parallel) with a diameter which at maximum is as large as the diameter of the at least one separating space.
  • figure 1 shows a perspective and partly cut-away view of a part of a vacuum-cleaner according to the present invention
  • figure 2 shows a perspective and partly cut-away view of a separating space (including internal recycle) of a vacuum- cleaner with radial feed according to the present invention
  • figure 3 a perspective and partly cut-away view of an alternative embodiment of a separating space of a vacuum-cleaner with an axial feed according to the present invention
  • figure 4 a view of a cross section through the alternative embodiment of a separating space of a vacuum-cleaner as shown in figure 3.
  • Figure 1 shows a part of vacuum cleaner 1 with a tangential feed opening 2.
  • the contaminated air is drawn in through this tangential feed opening 2.
  • the indrawn air is then rotated in a pre-separator 3, as a result of which heavier dirt particles fall downward into a compartment 4 for coarse dirt.
  • the pre-cleaned air is carried through a cylindrical filter 6 likewise forming part of pre-separator 3.
  • the contaminated air will hereby also be further pre-cleaned.
  • the captured (mainly larger) dirt particles will once again fall downward into compartment 4 for coarse dirt.
  • the air carried through cylindrical filter 6 then enters a distribution chamber 7, from where the pre-cleaned air is drawn in through a number of multiple ports 8 of six separating spaces 9.
  • the air is here drawn in substantially radially through separating spaces 9.
  • Situated in separating spaces 9 are curved guide blades 10 which convert the radial flow direction of the air into an axial flow direction and subsequently into a substantially tangential flow direction. It is noted that, in another embodiment variant, this can for instance also be a (direct) conversion from an axial flow direction to a tangential flow direction.
  • Efficient vortices are created in separating spaces 9 by this change in the flow direction in separating spaces 9 and subsequently the tapering inner walls 11 of separating spaces 9, wherein the main flow of the (purified) air is discharged axially by gas discharges 13 through a core 12 enclosed by curved guide blades 10.
  • the combination of the blades 10 and the core 12 is also known as "swirl element".
  • the swirl element 10, 12 converts the axial velocity into a more tangential velocity.
  • the smaller dirt particles leave separating spaces 9 on the distal side of separating spaces 9 through dirt discharges 14 and enter a compartment 15 for dirt with finer particles.
  • a (smaller) passage 16 is arranged between dirt discharges 14 and the suction side of gas discharges 13. Due to the presence of this passage 16 a limited airflow will be generated by dirt discharges 14, whereby the (finer) dirt can be discharged more easily from separating spaces 9 into compartment 15.
  • the pump with which the air is suctioned through vacuum cleaner 1 is not shown. This pump is coupled downstream of connection 17 which encloses gas discharges 13 and passage 16.
  • Figure 2 shows a cut-away view of a separating space 20 of a vacuum-cleaner bearing a great resemblance to separating spaces 9 as shown in figure 1.
  • Corresponding components are therefore designated with identical reference numerals.
  • Situated in separating space 20 are curved guide blades 10 which connect to the radially placed feed ports 8. Curved guide blades 10 ensure that the radial flow direction of the air is converted into an axial flow direction, and then substantially tangential flow direction. The indrawn air then enters an interior of separating space 20 bounded by the tapering inner wall 11.
  • the main flow of the (purified) air is discharged axially through a central channel 21 in the core 12 enclosed by curved guide blades 10, to a gas discharge not further shown here.
  • a smaller passage 22 (also referred to as an "internal recycle") is arranged from dirt discharge 14 to the interior of separating space 20.
  • This construction differs from the passage 16 shown in figure 1. Due to the presence of passage 22 (as an alternative to the central passage 16 shown in figure 1), in this case arranged individually for separating space 20, a limited airflow will be generated in separating space 20, whereby the (finer) dirt will leave dirt discharge 14 more easily.
  • a filter (not shown) can optionally be placed on an outer end 23 of passage 22 in order to prevent already captured dirt being fed back into separating space 9.
  • the re-injection nozzle 24 shown in this figure introduces the air substantially axially.
  • the air from passage 22 can for instance also be carried back again into the separating space in substantially radial and/or tangential manner.
  • FIG 3 shows a perspective and partly cut-away view of an alternative embodiment of a separating space 30 of a vacuum-cleaner according to the present invention, again bearing great resemblance to separating spaces 9, 20 as shown in figures 1 and 2.
  • separating space 30 Situated in separating space 30 are curved guide blades 31 linked to core 32 (also indicated as root 32).
  • the curved guide blades 31 connect to axially placed feed ports (different form the separating space 20 as shown in figure 2).
  • the combination of blades 31 and core 32 is referred to as swirl element 33.
  • the blades 31 of the swirl element 33 converts the axial velocity (see arrow Pi) of a contaminated gas flow gradually from a starting angle ⁇ i to an outflow angle ⁇ 2 at the trailing edge of the blades.
  • swirl element 33 typically ⁇ i ⁇ ⁇ 2 and 50° ⁇ ⁇ 2 ⁇ 85°.
  • An alternative construction of a swirl element 33 could be providing slots in a core 32 instead of providing blades 31 to the core 32; this is equal within the scope of the present invention.
  • Main purpose of the swirl element 33 is to accelerate the flow into a more tangential velocity; the relations of dimensions of the separating space 30 as presented later in this text are contributing to efficiently realise such an effective tangential velocity.
  • the indrawn air After passing the swirl element 33 the indrawn air then enters an interior of separating space 34 bounded by the tapering inner wall 35.
  • the main flow of the (purified) gas is discharged axially through a central channel 36 in the swirl element 33 and a polluted gas flow (e.g. containing a substantial potion of e.g. dust) is leaving the separating space 34 via a dirt discharge 37.
  • the dirt discharge 37 is surrounded by a concave conical part 38.
  • the conical part 38 is pointed inside in this embodiment (concave) that differs from the convex conical part of the core 12 as shown in figure 2.
  • the function of the concave conical part 38 (like that of a convex conical part) is to stabilise the rotating flow in the interior of separating space 34 but now with the advantage of a more compact built separating space 30.
  • a convex conical part of the core 12 and a concave conical part 38 are mentioned here it is also possible to create a flat surface instead of these two curved parts 12, 38.
  • the blades 31 are curved in axial direction and are depicted as perpendicular to the core 32, however the blades 31 could also connect with an acute angle (swept) on the core 32 to further optimise the flow pattern of the gas. Another option is to curve the blades 31 in radial direction, possibly in combination with swept blades 31.
  • Figure 4 shows a view of a cross section through the alternative embodiment of the separating space 30 of a vacuum-cleaner as shown in figure 3. It is beneficial to accelerate (and stabilise) the flow inside the swirl element 33 and/or to have a smooth outflow out of the swirl element 33 inside the separating space 34.
  • H 2 is the height of the blades 31 at the trailing edge
  • - Ti referring to the blade thickness at the leading edge of the blades 31 is larger than T 2 referring to the blade thickness at the trailing edge of the blades 31 ; - the height H of the blades 31 can be varied; Hi being the height of the blades
  • H 2 being the height of the blades 31 at the trailing edge (Hi ⁇ H 2 );
  • the distance between the blades 31 at the leading edge is smaller than Ti representing the blade thickness at the leading edge of the blades 31 ; and/or - the diameter R 0 of the core 32 is at least 1,5 larger than V o d outer diameter of the dirt discharge 37 (R 0 > 1,5 x V o d), and/or
  • the Si straight length of the distance between the end of the blades 31 and the beginning of the separating space 34 bounded by the tapering inner wall 35 is at least 0,3 times smaller than the length C of the conical section of the separation chamber 38.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cyclones (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

Cette invention se rapporte à un épurateur de gaz destiné à séparer des composants entraînés d'un écoulement de gaz contaminé et comprenant : un conduit d'alimentation pour entraîner l'écoulement de gaz contaminé ; au moins un espace de séparation (4) pour séparer l'écoulement de gaz contaminé qui est doté d'une évacuation de gaz (13) et d'une évacuation de composant (14) ; un espace de collecte de composant (15) ; et une pompe pour aspirer le gaz contaminé à travers l'espace de séparation.
PCT/NL2009/050070 2008-02-18 2009-02-17 Epurateur de gaz destiné à séparer au moins en partie des composants entraînés d’un écoulement de gaz contaminé WO2009104959A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2001293 2008-02-18
NL2001293A NL2001293C2 (nl) 2008-02-18 2008-02-18 Gasreiniger voor het ten minste gedeeltelijk uit een vervuilde gasstroom separeren van meegevoerde componenten.

Publications (1)

Publication Number Publication Date
WO2009104959A1 true WO2009104959A1 (fr) 2009-08-27

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Application Number Title Priority Date Filing Date
PCT/NL2009/050070 WO2009104959A1 (fr) 2008-02-18 2009-02-17 Epurateur de gaz destiné à séparer au moins en partie des composants entraînés d’un écoulement de gaz contaminé

Country Status (2)

Country Link
NL (1) NL2001293C2 (fr)
WO (1) WO2009104959A1 (fr)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012001420A1 (fr) * 2010-06-30 2012-01-05 Dyson Technology Limited Appareil de séparation cyclonique d'un aspirateur
CN102389865A (zh) * 2011-10-12 2012-03-28 常熟市华能环保工程有限公司 可调节风量的旋流除尘器
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CN103040414A (zh) * 2011-10-12 2013-04-17 百得有限公司 旋风式分离装置
CN103040413A (zh) * 2011-10-12 2013-04-17 百得有限公司 旋风式分离装置
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US10364905B2 (en) 2017-05-11 2019-07-30 Hayward Industries, Inc. Pool cleaner check valve
US10767382B2 (en) 2017-05-11 2020-09-08 Hayward Industries, Inc. Pool cleaner impeller subassembly
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US10156083B2 (en) 2017-05-11 2018-12-18 Hayward Industries, Inc. Pool cleaner power coupling
US10676950B2 (en) 2017-05-11 2020-06-09 Hayward Industries, Inc. Pool cleaner roller latch
US10161153B2 (en) 2017-05-11 2018-12-25 Hayward Industries, Inc. Pool cleaner canister handle
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US10214933B2 (en) 2017-05-11 2019-02-26 Hayward Industries, Inc. Pool cleaner power supply
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KR102583442B1 (ko) 2019-08-01 2023-09-27 주식회사 엘지화학 축류식 사이클론 장치
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US11751740B2 (en) 2019-11-18 2023-09-12 Omachron Intellectual Property Inc. Multi-inlet cyclone
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WO2022225215A1 (fr) * 2021-04-19 2022-10-27 삼성전자주식회사 Dispositif de collecte de poussières à plusieurs cyclones et aspirateur le comprenant

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