EP2198766A2 - Aspirateur doté d'un séparateur de force centrifuge - Google Patents

Aspirateur doté d'un séparateur de force centrifuge Download PDF

Info

Publication number: EP2198766A2
Authority: EP; European Patent Office
Prior art keywords: centrifugal separator; air; vacuum cleaner; separation chamber; air inlet
Prior art date: 2008-12-19
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

EP09177830A

Other languages

German (de)

English (en)

Other versions

EP2198766A3 (fr

EP2198766B1 (fr

Inventor

Julian Kastner

Markus Kraus

Florian Schmitt

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.)

2008-12-19

Filing date

2009-12-03

Publication date

2010-06-23

2009-12-03 Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH

2010-06-23 Publication of EP2198766A2 publication Critical patent/EP2198766A2/fr

2013-01-23 Publication of EP2198766A3 publication Critical patent/EP2198766A3/fr

2015-03-04 Application granted granted Critical

2015-03-04 Publication of EP2198766B1 publication Critical patent/EP2198766B1/fr

Status Not-in-force legal-status Critical Current

2029-12-03 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
- A47L9/10—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
- A47L9/1608—Cyclonic chamber constructions

Definitions

the present invention relates to a vacuum cleaner with a centrifugal separator having an air inlet passage connected to a suction air guide for dust-laden suction air and having a separation space and an air outlet, the air inlet passage opening into the separation space.
Such vacuum cleaners are known from the prior art.
Components of such a vacuum cleaner are essentially one or more nozzles for receiving the dust, a suction pipe, which is designed depending on the structure of the vacuum cleaner as a floor, hand or upright vacuum cleaner shorter or longer or rigid or telescopic, a connector which the suction pipe with a flexible suction hose connects, one or more dust container, which may be part of the centrifugal or the separator or is designed as a separate dust collector, a vacuum chamber through which the air is sucked by a motor-fan unit, and optionally a fine dust filter for Final cleaning of the escaping air.
the invention has for its object to provide an improved centrifugal separator for a vacuum cleaner, which avoids turbulence in the inlet region, and provides an increased volume flow while reducing the noise.
the vacuum cleaner according to the invention comprises a centrifugal separator of an air guide means, wherein the air guide means is a surface which is generated by screwing a space curve about the longitudinal axis of the centrifugal separator and at the end of the surface has an edge which has an inner and an outer corner, wherein the outer corner has an axial position in the longitudinal direction of the axis of the centrifugal separator and the outer corner is disposed in a radial angular range orthogonal to the axis of the separation space between plus and minus 15 degrees, the zero position of the angular range being from a radius of the separation space and an intersection is formed, which represents the transition of the air inlet channel in the separation chamber, which faces the screwing of the space curve.
Both cyclone and cyclone separators are to be regarded as centrifugal separators, centrifugal forces acting on the particles in the centrifugal force separator and accelerating them radially outward.
centrifugal separators are used in particular in so-called bagless vacuum cleaners.
air guidance means those devices are to be considered, which the incoming air from its original flow direction into another Distract flow direction. With a screwing of a space curve around a fixed direction, a helix is generated and its formed surface represents the air guide means.
the air guide means can start on the one hand on a boundary surface of the separation chamber and ends on the other hand in the separation chamber with an edge projecting into the free space.
the trailing edge of the air guide means may form an inner and outer corner with the inwardly adjacent surfaces of the separation space.
the outer corner is located at the lateral boundary of the air inlet passage so that, with a right-handed air guide means, wherein the screw rotates away from the air inlet and to the ejection, the corner on the left side and a left-hand air guide means on the right side the air inlet is arranged.
An angle of 360 degrees makes a full turn.
the air duct may end in the region of the air inlet. It can thus be achieved that the incoming air and the rotating air are located at the entry point in spaced-apart planes and flow largely unaffected from each other, or almost without mutual collision.
the air inlet channel opens in the vicinity of a separating surface on one side final boundary surface in the separation chamber.
the outer corner on an axial position, of one of the boundary surface (23) nearest the mouth of the Lufeinlasskanals (3) in the separation chamber (5) in the longitudinal direction of the axis of the centrifugal separator by 0.5 to 1.5 times the height of the mouth of the air inlet channel is spaced.
the term height is the extent of the mouth defined in the axial direction.
the axial position of the outer corner in the longitudinal direction of the axis of the centrifugal separator may be about two-thirds to about the maximum height of the air inlet channel.
the air inlet channel preferably opens tangentially into the separation chamber.
the air inlet can be tangential to an air flow in the centrifugal separator and the air guide means deflect the incoming air into a perpendicular to the air inlet protruding helix.
the air can be converted into a preferably screw-shaped or spiral rotational movement with largely avoiding swirling at the point of entry and with as little resistance as possible.
the outer corner of the air guide means is located on the boundary of the air inlet channel, which represents the transition of the air inlet channel in the separation chamber and which faces the screwing of the space curve in the separation space.
the air inlet channel can thereby be continued into the separation chamber, without colliding with a rotating air flow. As a result, especially turbulences and noises in the middle and higher audible frequency range can be avoided.
the edge of the air guide means terminates in the separation chamber or is connected to a cover which closes a space between the air guide and the air inlet side boundary surface of the separation chamber.
the edge may be connected to a boundary wall, which protect a dead space below the air guide means, so aligned to the air inlet side boundary surface, against dust deposits.
the boundary surface together with the air inlet channel may form a continuous wall which extends the lateral area of the air inlet channel into the separation space.
the outer and the inner corner of the air ducting means is located on a line of an obliquely cut cylinder or conic section.
the two corners are located on a spatially arranged secant in a cylinder or cone.
the outer and inner corners of the air guide means lie on a straight line which lies on a plane which intersects the centrifugal separator orthogonal to the axis of the centrifugal separator.
the two corners can thereby lie at different heights, wherein superimposed swirl effects can be achieved in conjunction with the curve lying between the two corners and the concomitant surface in the direction of the air flow, which allow an improved separation efficiency.
the edge forms a straight line or a convex or concave curve.
a convex curve is an outwardly, ie curved into the separation chamber, under a concave curve is to be understood inwardly, ie curved away from the discharge side shape.
the term curve includes symmetric as well as subsections of symmetric and asymmetric geometries.
a straight line can be converted into a tool shape with simple means. Curves may have the advantage that at the radial transitions from the air guide means to the inner boundary walls of the centrifugal separator radii are present, which advantageously avoid areas with turbulence and dust deposits.
the outer and the inner corner are arranged around the axis of the centrifugal separator after a maximum of one complete revolution of the air guiding means.
the air guiding means can guide the air for a maximum of one revolution about the radial axis and thereby unfold the air flow with the dust particles without a limiting channel formation.
a limiting channel may be disadvantageous in that as large, heavy particles only half a revolution, small, light particles, however, require around three revolutions to reach the ejection into the dust collector.
an air guide means which extends for a maximum of one revolution, it can be achieved that act on the different particles their own radial and axial forces and accelerations after a maximum of one revolution and are not decelerated in the radial direction réelleelleder air guide means.
the air guide means may extend over a third of a revolution, preferably at the end of a revolution.
the invention further development is preferably provided that connects to the air guide means a plateau.
air flowing in from the air inlet channel can thereby be prevented from the rotating spiral or screw movement.
it can be achieved that, at the end of the air duct, the helical or spiral air in the separation chamber can be safely guided over the inflowing air which lies deeper in the plane.
turbulences of the two air streams which are almost perpendicular to one another, can advantageously be avoided.
the plateau no longer counts as an air-guiding means and its pitch is substantially less than the pitch of the air-guiding means.
the slope of the plateau is approximately zero.
the air guide means formed integrally with the centrifugal separator or constitutes a separate component of the centrifugal separator.
a one-piece design of the air guide means together with the inner wall of the centrifugal separator allow a simple tool design and easy assembly assembly.
With a separate component design of the air guide means can advantageously more complex geometries are displayed.
Wear-resistant or differently colored materials are used.
the air guide means is arranged on a removable or movable housing part of the centrifugal separator.
the air guide means may be arranged on a removable or movable housing part of the centrifugal separator.
the air guide means extends in the radial direction away from the axis of the centrifugal separator to the inner wall of the centrifugal separator.
the incoming air over the full available width, ie in the radial direction are detected by the air guide means and the particles are accelerated to the outside and receive a spiral or screw movement.
the air guide means extends in the radial direction away from the axis of the centrifugal separator and has a distance to the inner wall of the centrifugal separator.
Small light particles take more turns to reach the ejection window than large, heavy particles.
the air guiding means are advantageously at a distance from the inner wall of the separating space, their particular radial centrifugal forces, as well as axial accelerations caused by the screwing movement of the air, can act especially on the different weighty particles. Even with a short residence time of the dust-laden air in the region of the air duct, this effect can be achieved. Particularly small particles can thereby experience a safe unchecked acceleration.
an oblique ejection surface is arranged in an advantageous manner. Particles which are located on the part of the ejection surface which ascends toward the ejection can be ejected safely into the dust collecting container at the outlet opening.
turbulences in the region of the air outlet, which is connected to the separation chamber via a dip tube, can thereby be avoided.
An oblique ejection surface means a plane which is not oriented orthogonally to the axis of the centrifugal separator, that is to say at an angle.
the present invention facilitates with simple and constructive means the realization of a centrifugal separator in which especially a noise reduction and an increased volume flow are achieved. Furthermore, a higher overall efficiency, an increase in efficiency and improved separation efficiency are achieved.
FIG. 1 an inventive vacuum cleaner 1 is shown, is sucked in the dust-laden air via a floor nozzle and a Saugluft Unit 4, consisting of a length-adjustable suction pipe, a connector to a flexible suction hose into the interior of a housing of the vacuum cleaner 1.
a centrifugal separator 2 in the FIGS. 2 to 6 is shown in detail.
FIG. 2 shows the centrifugal separator 2, which has a tubular air inlet channel 3, which connects to the Saugluft arrangement 4 of the vacuum cleaner 1, that through him the air flows from the suction air 4 tangentially into the centrifugal separator 2. From there, the air passes into a substantially cylindrical separation chamber 5, in which, similar to a centrifuge according to the principle of centrifugal force, the dust from the air is deposited.
An air outlet 6 of the centrifugal separator 2 is connected via a dip tube 7 with the separation chamber 5.
an air guide means 8 in the form of a surface 9 is provided starting from the lower boundary surface 23 of the separation chamber 5, which results from continuous screwing 10 of a radius 14 of a longitudinal axis 11 of the separation chamber 4 about this longitudinal axis 11.
the air guide means 8 with the dip tube 7 forms a innenligede corner 25 and the wall 20 an outer corner 26.
the edge 24 is located on the radius 14 which intersects the separation chamber 5 and the air inlet duct 3.
the air guiding means 8 is formed in one piece with a designed as a pivotable lid housing part 19 of the centrifugal separator 2. The lid can be opened to clean the separation chamber 4.
the lid also covers a collecting chamber of the centrifugal separator 2, not shown, which can be emptied when opening the lid.
the air guide means 8 incoming air is directed to a helical, about the longitudinal axis 11 of the separation chamber 5 extending and along the longitudinal axis 11 directed away from the air inlet duct 3 path.
the threaded surface 9 of the air guide means starts from the mouth of the air inlet duct 3 in the direction of the screw 10 after about 2/3 of a full turn 12 about the longitudinal axis 11 of the centrifugal separator 2.
the screwed surface 9 of the air guide means 8 terminates at an edge 24th after about 1/3 of a full turn 12 at the screw 10 facing edge of the mouth of the air inlet duct 3 and there has an axial extent 17, which corresponds approximately to the height 18 of the mouth of the inlet channel 3. This can ensure that the deflected air does not collide with newly air flowing through the air inlet duct 3 and thereby undesirable turbulence.
the surface 9 of the air guiding means 8 has a linear slope.
the surface 9 extends in the radial direction of the separation chamber 5 from the central dip tube 7 up to the wall 20 of the cylindrical separation chamber 5.
the centrifugal separator 2 operates as follows: Air flowing in through the air inlet duct 3 is directed onto the helical path by the air guiding means 8 and flows on this path in the direction of an obliquely arranged ejection surface 16 and an ejection 22 of the separating chamber 5 of the centrifugal separator 2 Effect of centrifugal forces collects while the dust on the wall 20 of the separation chamber and moves there on a spiral path in the direction of ejection 22, through which he leaves the separation chamber 4 and enters the collection chamber. The air, however, undergoes a deflection at the level of the ejection 22 of the separation chamber 4 and leaves the separation chamber 4 through the dip tube 7 and the outlet 6 in the direction of the blower of the vacuum cleaner. 1
the air guiding means 8 not only improves the dust separation but also reduces the noise generated by the centrifugal separator 2. This may be the comparison of FIGS. 7 and 8 are taken, in each of which the sound power of a centrifugal separator 2 is indicated as a function of frequency. It shows FIG. 7 the sound power of a centrifugal separator 2 without air guide means 8 and FIG. 8 However, it shows that a significant improvement can be achieved, especially in the case of the particularly unpleasant middle frequencies.
the present invention facilitates with simple and constructive means the realization of a centrifugal separator in which particularly a noise reduction and a high volume flow can be achieved. Furthermore, a higher overall efficiency, an increase in efficiency and improved separation efficiency are achieved.

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Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Filters For Electric Vacuum Cleaners (AREA)
Cyclones (AREA)

EP09177830.8A 2008-12-19 2009-12-03 Aspirateur doté d'un séparateur de force centrifuge Not-in-force EP2198766B1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE200810055046 DE102008055046B3 (de)	2008-12-19	2008-12-19	Staubsauger mit einem Fliehkraftabscheider

Publications (3)

Publication Number	Publication Date
EP2198766A2 true EP2198766A2 (fr)	2010-06-23
EP2198766A3 EP2198766A3 (fr)	2013-01-23
EP2198766B1 EP2198766B1 (fr)	2015-03-04

Family

ID=41611373

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP09177830.8A Not-in-force EP2198766B1 (fr)	2008-12-19	2009-12-03	Aspirateur doté d'un séparateur de force centrifuge

Country Status (2)

Country	Link
EP (1)	EP2198766B1 (fr)
DE (1)	DE102008055046B3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102485153A (zh) *	2010-12-03	2012-06-06	乐金电子(天津)电器有限公司	具有异型进气道的吸尘器
EP2617281A1 (fr) *	2012-01-23	2013-07-24	Black & Decker Inc.	Appareil de collecte de déchets du jardin

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102012211249A1 (de)	2012-06-29	2014-01-02	BSH Bosch und Siemens Hausgeräte GmbH	Staubabscheideeinheit für einen Staubsauger und Staubsauger
WO2021119801A1 (fr) *	2019-12-17	2021-06-24	Omachron Intellectual Property Inc.	Cyclone multiétage et appareil de nettoyage de surfaces ayant le cyclone

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
KR20010001213A (ko) *	1999-06-02	2001-01-05	구자홍	싸이클론 집진장치
JP2004215760A (ja) *	2003-01-10	2004-08-05	Matsushita Electric Ind Co Ltd	電気掃除機
KR100560967B1 (ko) *	2005-01-14	2006-03-15	삼성광주전자 주식회사	사이클론 집진장치
DE102005056922A1 (de) *	2005-11-29	2007-05-31	BSH Bosch und Siemens Hausgeräte GmbH	Staubsauger mit Fliehkraftabscheider
KR100778121B1 (ko) *	2006-06-16	2007-11-21	삼성광주전자 주식회사	진공청소기용 집진장치
KR20080096191A (ko) *	2007-04-27	2008-10-30	삼성광주전자 주식회사	캐니스터/스틱 겸용 진공청소기

2008
- 2008-12-19 DE DE200810055046 patent/DE102008055046B3/de not_active Expired - Fee Related
2009
- 2009-12-03 EP EP09177830.8A patent/EP2198766B1/fr not_active Not-in-force

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN102485153A (zh) *	2010-12-03	2012-06-06	乐金电子(天津)电器有限公司	具有异型进气道的吸尘器
CN102485153B (zh) *	2010-12-03	2016-03-02	乐金电子(天津)电器有限公司	具有异型进气道的吸尘器
EP2617281A1 (fr) *	2012-01-23	2013-07-24	Black & Decker Inc.	Appareil de collecte de déchets du jardin
US9265391B2 (en)	2012-01-23	2016-02-23	Black & Decker Inc.	Apparatus for collection of garden waste

Also Published As

Publication number	Publication date
EP2198766A3 (fr)	2013-01-23
EP2198766B1 (fr)	2015-03-04
DE102008055046B3 (de)	2010-06-17

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