EP2659821A2 - Dimensions d'un séparateur à tube vortex - Google Patents

Dimensions d'un séparateur à tube vortex Download PDF

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Publication number
EP2659821A2
EP2659821A2 EP13165294.3A EP13165294A EP2659821A2 EP 2659821 A2 EP2659821 A2 EP 2659821A2 EP 13165294 A EP13165294 A EP 13165294A EP 2659821 A2 EP2659821 A2 EP 2659821A2
Authority
EP
European Patent Office
Prior art keywords
inlet
air
wirbelrohrabscheider
separator
dip tube
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP13165294.3A
Other languages
German (de)
English (en)
Other versions
EP2659821A3 (fr
EP2659821B1 (fr
Inventor
Florian Schmitt
Thomas Seith
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2659821A2 publication Critical patent/EP2659821A2/fr
Publication of EP2659821A3 publication Critical patent/EP2659821A3/fr
Application granted granted Critical
Publication of EP2659821B1 publication Critical patent/EP2659821B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
    • 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
    • A47L9/165—Construction of 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
    • B04C5/02—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
    • B04C5/081—Shapes or dimensions
    • 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

Definitions

  • Wirbelrohrabscheider are known, which are used for example in vacuum cleaners.
  • a Wirbelrohrabscheider occurs dust-laden air at one end through an inlet opening into the interior of the Wirbelrohrabscheiders.
  • the air then helically moves to the other end of the swirl tube separator.
  • the dust content of the air due to the centrifugal force through a dust ejection outlet from the Wirbelrohrabscheider emerge.
  • the air moves in the interior of the Wirbelrohrabscheiders again in the direction of one end and exits through a dip tube, which leads into an air outlet, from the Wirbelrohrabscheider.
  • the publication DE 102005056921 A1 discloses a centrifugal separator for a vacuum cleaner.
  • the centrifugal separator has an air inlet for the dust-laden air, a vortex tube for separating the dust from the rotationally displaceable air and an air outlet for purified air.
  • the centrifugal separator has a further opening, which is closed by a detachable lid, wherein the wall of the centrifugal separator or a receiving wall and the wall of the lid interlock.
  • the invention is based on the object to provide an improved Wirbelrohrabscheider.
  • a vacuum cleaner that is equipped with such a Wirbelrohrabscheider to have a lower power consumption and a lower noise with constant or improved Staubabscheide educa.
  • the object of the invention is achieved by a Wirbelrohrabscheider with the features of independent claims 1, 6, 10, 13 and / or 15. Further, the object of the invention is achieved by the vacuum cleaner of claim 19 and the use of the Wirbelrohrabscheiders in a vacuum cleaner, such as formulated in claim 20.
  • a Wirbelrohrabscheider consists of a first and an opposite second end face, which are connected by one or more side walls. The end faces and the side wall or side walls surround the interior of the Wirbelrohrabscheiders.
  • the Wirbelrohrabscheider preferably has an inlet opening through which air can flow into its interior.
  • the preferred inlet opening is located in a side wall, preferably closer to the first end face than to the second end face.
  • the incoming air can move through the interior in a helical path.
  • This track has a Rotary as also a translational component. The latter is referred to below as the first transport direction.
  • the first transport direction preferably points from the first end face in the direction of the second end face.
  • the air may undergo a deflection so that it may preferably enter an immersion tube in an opposite, second transport direction, which is preferably connected to an air outlet opening through which the air can escape from the vortex tube separator.
  • the air outlet opening is preferably located in the first end face.
  • the vortex tube separator can serve to separate particles from particle-laden air.
  • the deposition of particles - in particular dust - preferably takes place in a region of the Wirbelrohrabscheiders in which the air reversal takes place.
  • the vortex tube separator has-preferably in the named area-a dust outlet opening through which the separated particles can escape from the vortex tube separator.
  • the interior of the Wirbelrohrabscheiders preferably has an at least approximately circular cylindrical shape.
  • the end faces of the circular cylinder form the end faces of the Wirbelrohrabscheiders.
  • the axis of the circular cylinder is referred to as the axis of the Wirbelrohrabscheiders.
  • the radius of the circular cylinder is called inner radius r a .
  • the preferred dip tube also has an at least approximately circular cylindrical shape.
  • the circular cylinder of the dip tube has a radius r i and a height h i .
  • an end surface of the preferred dip tube is at least partially designed to the interior and the other end surface preferably at least partially made air-permeable to the air outlet.
  • the end of the dip tube located at the air outlet port is referred to as the exit end, the other end being the free end.
  • the dip tube is coaxial in the interior of the Wirbelrohrabscheiders. This makes it possible that the air circulating through the interior around the dip tube, flows through a space of at least approximately constant width.
  • the preferred inlet opening, through which the air enters the interior of the Wirbelrohrabscheiders, has in the axial direction of the Wirbelrohrabscheiders on a maximum extent from the outlet end to the free end of the dip tube.
  • the inlet opening is preferably the projection of an inlet rectangle on the lateral surface of the circular cylindrical interior.
  • the projection direction is parallel to the normal vector of the inlet rectangle.
  • the inlet rectangle has two sides each with the length a and b.
  • the sides with the length a are parallel to the axis of the Wirbelrohrabscheiders. a is thus the inlet height of the inlet opening.
  • the sides with the length b are located radially to the circular axis, have an end in the lateral surface and the second end within the interior. b is called the inlet width.
  • Wirbelrohrabscheiders invention in a vacuum cleaner and the vacuum cleaner according to the invention with the Wirbelrohrabscheider invention have the advantage that they can cause a higher ratio of dust separation to fan performance. On the one hand, this means that with constant fan performance, improved dust separation can be achieved. On the other hand, with a constant Staubabscheide maybe a lower fan speed can be used. This can result in a lower noise level. In addition, it is thereby possible to use a smaller and / or cheaper blower motor.
  • the inventive choice of the value S ra a Vortex Tube may be provided having a dip tube with the same inner radius which has a larger radius r i in comparison with the prior art.
  • the inventors have recognized that a larger radius r i of the dip tube surprisingly does not lead to a short circuit of the air flow. Due to the wider dip tube, the narrowest point of the Wirbelrohrabscheiders is designed much larger at the same inner radius of the Wirbelrohrabscheiders, whereby the pressure drop can be reduced without necessarily a noticeable drop in Staubabscheide artistic be observed can.
  • the speed at the dust outlet opening is the same or even higher due to the increased volume flow.
  • the inventive choice of S hi - and the resulting wider and shorter immersion tube - the path of the air can be limited to one or two revolutions in the Wirbelrohrabscheider so that energy can be saved without the Staubabscheide artistic is reduced.
  • the inventive choice of values S a and S b results in a shorter (a is smaller), but wider (b is greater) surface F e of the inlet opening. This has the consequence that coarse dirt can enter better into the Wirbelrohrabscheider.
  • the shorter inlet surface can effectively prevent a short circuit of the air flow.
  • S F is chosen so that in relation to the cross-sectional area F i of the dip tube smaller surface of the inlet opening F e arises.
  • the smaller inlet opening may result in greater acceleration of the air entering the vortex tube separator and thus may result in improved rotation of the air.
  • the inventors have found in simulations and experiments that the chosen parameters can provide a swirl tube separator which has a lower pressure drop and, with consistent or even improved dust separation, requires a blower motor with a lower power consumption.
  • the improvements of the Wirbelrohrabscheiders invention can lead to lower costs in production. At the same time a Wirbelrohrabscheider having the improvements of the invention may have a lower noise.
  • the parameters according to the invention can represent a design aid in the design of a vortex tube separator. Thus, a simpler and faster coarse construction when designing a Wirbelrohrabscheiders is possible.
  • S hi is preferably at most 6, more preferably at most 5, particularly preferably at most 4, particularly preferably at most 3, particularly preferably at most 2 and very particularly preferably at most 1.2.
  • S hi is preferably at least 0.9, more preferably at least 1.0, and most preferably at least 1.1. Most preferably, S hi is 1,132. Due to the wider immersion tube, the narrowest point in the vortex tube separator is widened and the pressure drop can be reduced.
  • S b is preferably at least 0.42, more preferably at least 0.43, and most preferably 0.44.
  • S b is preferably at most 0.55, and more preferably 0.5. Most preferably, S b is 0.45.
  • the wider inlet opening allows coarser dirt to penetrate better into the vortex tube separator, which can lead to a higher Staubabscheide artistic.
  • S a is preferably at most 0.65, and more preferably at most 0.6.
  • S a is 0.584.
  • S a is preferably at least 0.3, more preferably at least 0.4, and most preferably at least 0.5. The shorter inlet opening can lead to a short circuit of the air flow is avoided.
  • S F is preferably at least 0.3, more preferably at least 0.4, and most preferably at least 0.5.
  • the smaller inlet opening means that the incoming air is better accelerated and thus a faster rotation can occur, which can lead to a higher dust separation.
  • the Wirbelrohrabscheider has in a preferred embodiment in its interior an air guide means.
  • the air guiding means is located on the second end face.
  • the air can be deflected particularly effective and directed into the dip tube. This can lead to a reduction in the pressure loss and a larger ratio of dust removal performance to fan performance.
  • the preferred air guiding means comprises a sheet-like element.
  • the sheet-like element of the air guiding means is for example a blade, a blade, a plate or a wing.
  • the preferred sheet-like element has a linear, progressive or degressive slope in the direction of the air outlet opening.
  • the preferred sheet-like element extends helically in the direction of the air outlet opening.
  • the preferred sheet-like element is formed scoop-shaped, that is, it is curved in cross-section perpendicular to the axis of the Wirbelrohrabscheiders.
  • the air guide means comprises a plurality of sheet-like elements, for example 2, 3 or 4 sheet-like elements, preferably of the type described above.
  • adjacent sheet-like elements of the air guiding means can form straight or helical channels extending in the direction of the air outlet, which are particularly well suited for influencing the rotation suitable for the air.
  • the air guiding means comprises an apex cone.
  • an apex cone may be a straight or slanted cone or truncated cone, so such an apex cone does not necessarily have to be pointed.
  • the generatrix does not necessarily have to be straight, but it may also be concave towards the axis of the apex cone or convexly curved away from the axis.
  • a preferred apex cone is substantially rotationally symmetric.
  • the air guide means in the form of an Apexkegels is arranged and designed so that this Apexkegel directs the air flow from an outer to an inner region of the Wirbelrohrabscheiders.
  • the preferred air guiding means consists in a geometrical sense of the sheet-like element which penetrates the apex cone. In other words, this means that the sheet-like element protrudes directly from an apex cone.
  • the air guide means may be applied to the tip or top surface of the Apexkegels, optionally also spaced by a pin.
  • the air guiding means is preferably arranged in an inner region of the swirl tube separator.
  • An inner region of the Wirbelrohrabscheiders in the context of the present invention is a region which does not extend in the directions perpendicular to the transport direction up to a jacket wall of the Staubabscheideraums.
  • the inner region is enclosed by an outer region reaching up to the outer wall. Due to the position of the air guiding means in the inner region of the dust removal chamber, a particularly efficient reversal of the transport direction can be achieved. This can contribute to a reduction of the pressure loss and to a noise reduction.
  • the air-guiding means is arranged stationarily in the vortex tube separator.
  • at least a part of the air guiding means is movably arranged in the vortex pipe separator, more preferably a part of the air guiding means is rotatable.
  • the movable part comprises one or more sheet-like elements.
  • the rotatable part of the air guide means is driven by the air flow.
  • the rotatable part of the air guiding means is not rotated by the air, but by another means, for example by a motor, preferably an electric motor in rotation.
  • the rotatable part of the air guiding means rotates counter to the direction of rotation of the air.
  • a particularly effective weakening of the rotation of the air can be achieved, thereby further reducing the pressure loss.
  • Ra is at least 1.8, more preferably at least 1.9, and most preferably at least 2.0.
  • S ra is preferably at most 2.4, more preferably at most 2.3, particularly preferably at most 2.2, and most preferably at most 2.1.
  • the distance between the first end face containing the air outlet opening and the nearest edge of the inlet opening is at least 3 mm and at most 15 mm. This distance is particularly preferably at least 5 mm and at most 10 mm. The greater proximity of the inlet opening at the first end face can prevent a short circuit of the air flow.
  • FIGS. 1 to 4 contain different representations of the same vortex tube separator according to the invention in a vacuum cleaner 16.
  • FIG. 1 shows the Wirbelrohrabscheider in plan view.
  • FIG. 2 shows the cross section through the in FIG. 1 shown line GG.
  • FIG. 3 shows a cross section through the Wirbelrohrabscheider in a plane which is perpendicular to the plane in FIG. 2 runs, contains the axis of the Wirbelrohrabscheiders and is parallel to the bottom of the vacuum cleaner.
  • FIG. 4 shows a cross section through the plane that is perpendicular to the plane in FIG. 2 and to the level in FIG. 3 lies and which contains the axis of the Wirbelrohrabscheiders.
  • the Wirbelrohrabscheider 5 has a circular cylindrical shape with the radius r a and includes a circular cylindrical dip tube 6 with the radius r i , which lies coaxially in the Wirbelrohrabscheider 5.
  • the dimensions of the inlet opening 3 are shown in FIG. 2 and FIG. 4 , FIG. 2 shows the larger inlet width b compared to the prior art.
  • the smaller inlet height a is shown in FIG FIG. 4 and corresponds in this case at the same time the height of the air inlet duct.
  • S ra is 2.1 here.
  • the swirl tube separator according to the invention can have improved dust separation and lower pressure drop and can thus be used with a blower motor which offers less noise and reduced power consumption.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Fluid Mechanics (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP13165294.3A 2012-05-03 2013-04-25 Dimensions d'un séparateur à tube vortex Active EP2659821B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102012207351A DE102012207351A1 (de) 2012-05-03 2012-05-03 Dimensionen eines Wirbelrohrabscheiders

Publications (3)

Publication Number Publication Date
EP2659821A2 true EP2659821A2 (fr) 2013-11-06
EP2659821A3 EP2659821A3 (fr) 2017-08-30
EP2659821B1 EP2659821B1 (fr) 2024-10-16

Family

ID=48190216

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13165294.3A Active EP2659821B1 (fr) 2012-05-03 2013-04-25 Dimensions d'un séparateur à tube vortex

Country Status (2)

Country Link
EP (1) EP2659821B1 (fr)
DE (1) DE102012207351A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1507853A1 (de) 1965-02-13 1969-07-24 Siemens Elektrogeraete Gmbh Nach dem Drehstroemungsprinzip arbeitender Schmutzabscheider
DE102005056921A1 (de) 2005-11-29 2007-05-31 BSH Bosch und Siemens Hausgeräte GmbH Fliehkraftabscheider für einen Staubsauger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3887456A (en) * 1973-10-01 1975-06-03 James W Loughner Classifier with rifflers and variable throat
US4317716A (en) * 1979-01-11 1982-03-02 Liller Delbert I Vortex finder and sleeve kit
WO2003080252A1 (fr) * 2002-03-19 2003-10-02 Bp Chemicals Limited Separation de gaz et de solides au moyen d'un cyclone
CN1279869C (zh) * 2002-04-28 2006-10-18 苏州金莱克清洁器具有限公司 吸尘器减速离心除尘装置
DE102008055045A1 (de) * 2008-12-19 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Staubsauger mit Fliehkraftabscheidern

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1507853A1 (de) 1965-02-13 1969-07-24 Siemens Elektrogeraete Gmbh Nach dem Drehstroemungsprinzip arbeitender Schmutzabscheider
DE102005056921A1 (de) 2005-11-29 2007-05-31 BSH Bosch und Siemens Hausgeräte GmbH Fliehkraftabscheider für einen Staubsauger

Also Published As

Publication number Publication date
EP2659821A3 (fr) 2017-08-30
DE102012207351A1 (de) 2013-11-07
EP2659821B1 (fr) 2024-10-16

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