EP0755214B1 - Segment de canal d'ecoulement, notamment pour un aspirateur - Google Patents
Segment de canal d'ecoulement, notamment pour un aspirateur Download PDFInfo
- Publication number
- EP0755214B1 EP0755214B1 EP95915163A EP95915163A EP0755214B1 EP 0755214 B1 EP0755214 B1 EP 0755214B1 EP 95915163 A EP95915163 A EP 95915163A EP 95915163 A EP95915163 A EP 95915163A EP 0755214 B1 EP0755214 B1 EP 0755214B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel section
- flow channel
- section
- joint
- flow
- 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.)
- Expired - Lifetime
Links
Images
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
- A47L9/02—Nozzles
- A47L9/04—Nozzles with driven brushes or agitators
Definitions
- the invention relates to a flow channel section, especially for a vacuum cleaner, with an input channel section with a redirection into a diagonal Intermediate channel section merges, which with a further redirection into an output channel section merges with a cross section of the input channel section and the output channel section is elliptical , and being in the intermediate channel section at circular Cross section of the channel formed a hinge is.
- Such an embodiment is from DE-A-27 21 530 known.
- a brush attachment for described a vacuum cleaner in which on the rear wall a flow channel section is connected to the roller chamber is.
- the input channel is the same obtuse angles like the exit channel bent, the input channel and the output channel at least an elliptical one in each bent part Have cross-section.
- the ends of the angled Areas of the input and output channels form a swivel whose axis is parallel to Axis of the brush roller is arranged and around which the Output channel of the flow channel section is pivotable is stored.
- the elliptical cross-sectional shape of Input and output channel in the area of the angled Ends corresponds to that when cutting one circular tube at a cutting angle between the axis of the bent part and corresponding to the pivot axis of the connecting piece
- the resulting elliptical cross-sectional shape is it necessary, with the largest possible angle in the area the bent sections of the input and output channel to work.
- the main disadvantage of this is that the size of the flow channel section grows with increasing angle. It is also a cheap one Flow only in the flat, not swung in Position given. As soon as the output channel around that Swivel pivoted from this flat position there are fluidic disadvantages, because relatively sharp deflection points are formed, which can lead to turbulence.
- the object of the present invention is a generic Flow channel section, in particular for a vacuum cleaner, so that a streamlined Condition in the largest possible swivel range is maintained around the swivel and / or that the air flow is directed so that sharp deflection points be avoided with a relatively small size of the Flow channel section.
- the angled parts of input and output channels, on a surface diagonal Line is determined by the diagonal alignment of the intermediate section according to the invention, improved use of space, where the space diagonal of the intermediate section is longer than the area diagonal of this section in the prior art described, with larger radii in the area of the transition from input to output channel in the intermediate section.
- the Center line of the flow channel section runs in curved shape, in two planes in the form of one Helix.
- the air duct penetrates the swivel in the form of a helix, causing the airflow when leaving the intermediate section into a significant self-rotation is offset.
- the so generated Swirl acts in the direction of that arranged in the vacuum cleaner Blower wheel, which then swirl in the form of a Stator principle enters the impeller or else counteracts, depending on the embodiment, what a improved suction power of the vacuum cleaner Has. Due to this air swirl become heavier Dirt particles in the pipe connection to the outside to the wall hurled out so that an automatic cleaning the pipe is made with this coarse dirt, by rubbing off the fine dirt.
- the connecting piece for the vacuum cleaner can Shortened helical flow channel section be and tangential in the working position of the vacuum cleaner pass over which working position at a rotation angle of about 45 ° is reached. Due to the described configuration of the flow channel section changes when the output channel is swiveled around the swivel just the slope of the Screw conveyor, with which sharp-edged geometries in the area of the flow channel section can be avoided.
- the airflow entering through the input duct becomes always, regardless of the swivel position in the area of the flow channel section, is deflected softly and thereby set in a clear self-rotation.
- the flow channel section is like this trained that the spatial diagonal alignment of the intermediate section at least with the opposite orientation of input and output channel.
- This Alignment corresponds to the working position of the vacuum cleaner, in which the most aerodynamic position is achieved.
- the one passing through the entry channel Airflow is both areal and in height at an angle of 45 ° to the intermediate section redirected.
- the air flow swings again in the same way in the output channel to afterwards in the pipe connection of the vacuum cleaner towards to kick the fan wheel.
- the design is optimized in that the space-diagonal line is a joint plane interspersed as a space diagonal or in that the flow channel axis focuses on the swivel the circular articular surface penetrates as a room diagonal.
- the axis aligned as a diagonal line the intermediate section is thus always in one Angle to the main axes of the joint circle of the swivel joint.
- the area diagonal Axis of the intermediate section in the above State of the art only in the horizontal plane at an angle to the axis of rotation. In the vertical plane however, is between the axis of the intermediate section and that of the swivel included no angle. Due to the alignment of the intermediate section along a space diagonal line, which is the joint plane interspersed as a room diagonal, is used both in the an angle horizontally as well as in the vertical plane between the axis of the intermediate section and the of the swivel included.
- the input channel viewed from a distance from the intermediate section Area, towards the intermediate section first in front of the joint area opposite the Joint area passes through recessed area, then in the alignment to go according to the room diagonals.
- This corresponds to immersing the air flow in the kink area of the input channel, whereby optimized the geometry of the flow channel section and what is the helical deflection of the air flow is already initiated.
- the sucked in Airflow first penetrates the elliptical Cross-section of the input channel, then runs through the recessed area, after which soft in the area of the intermediate section to be diverted.
- the geometry can still be improved can be achieved in that the intermediate section, starting from the joint area in the direction of the exit channel, first one in front of the output channel passes through this elevated area and then into the Alignment of the axis of the output channel.
- the air stream rotating in the form of a helix passes through in the area after stepping through the swivel joint of the intermediate section first the raised area of the kink area to smooth from there into alignment to go over the axis of the output channel.
- the latter has an organic one Design, which is characterized by relatively large radii in the area of the kinks of the input and output channels distinguished.
- the radially outer surface the V-seal runs approximately axially parallel.
- the training can be such that between a sealing socket on the surfaces that meet is arranged from elastomer material.
- This Sealing connector can also on the one forming the joint part End of the output channel.
- a another option for sealing the swivel joint is that between the assigned areas the joint parts arranged a V-shaped ring part is.
- one of the joint parts in A corrugated washer is molded onto the joint area.
- this corrugated washer on a bearing shell, which is arranged on the joint part, injection molded.
- the sealing of the joint part be designed so that one of the joint parts a felt washer is assigned as an axial bearing in the joint area is.
- the vacuum cleaner 1 shown is designed as a hand-held device. It has a housing 2, to which a top Handle 3 connects with end handle 4. In the transition area is between handle 4 and handle 3 On / off switch 5.
- the electrical cable connection is with the Number 10 denotes.
- the housing 2 is divided into a motor housing 6 and an overlying chamber 7 for receiving a filter bag, not shown.
- the engine fan is also not shown in the drawing.
- the motor housing 6 goes underside into a pipe coupling 8 over which the air flow connection to a suction nozzle 9 manufactures.
- the blower motor works from the bottom up, pushes consequently the dust air in the above the motor housing 6 filter bags arranged upside down.
- the suction nozzle 9 is schematic, partial in FIG. 2 broken open, shown. It has a suction area A in the form of a nozzle mouth 11, which is almost over the entire width of the suction nozzle 9 in the area extends its front longitudinal edge. This nozzle mouth 11 Upstream, the suction nozzle 9 has an open bottom Recording groove 12 for receiving a not shown Bristle bar. About the middle of the suction nozzle 9 is the Nozzle mouth 11 in a two-part flow channel section S over, with the first part S 'fixed to the housing and the second part S '' is pivotable on the first part S 'is arranged. The flow channel section part S '' forms the connection to the pipe coupling 8 of the vacuum cleaner 1.
- the flow channel section S has a total of three sections on. On the one hand, this is a suction nozzle housing side Input channel 13, which, starting from the nozzle mouth 11, almost straight into a deflection area 14 extends. Following the deflection area 14 is a Intermediate section 15 is provided, its axis x diagonally is aligned. This intermediate section 15 goes in the area of the flow channel section S '' another deflection area 16, on which a Outlet duct 17 with an almost straight axis connects.
- the intermediate section 15 is divided into two formed, the one part 15 'the housing side Deflection area 14 and the input channel 13 assigned is what the flow channel section part S 'is made of the input channel 13, the deflection area 14 and the first Part 15 'of the intermediate section 15 is composed.
- the second part 15 ′′ of the intermediate section 15 is assigned according to the flow channel section part S ''. Form the two parts of the intermediate section 15 a swivel 18.
- the flow channel section S is in the form of a screw spiral executed.
- the axis x of the intermediate section 15 crosses the swivel 18 in a space diagonal (see Figure 4).
- the formation of the flow channel section S is like this met that both the cross section of input and Output channel 13, 17 and that of the intermediate section 15 is elliptical (see FIGS. 5a-5c).
- the Articular surface 19 of the rotary joint 18, however, has one circular cross-section (see Figure 5d). This circular hinge surface 19 is formed in that the intermediate section 15 in the area of the to be formed Swivel 18 at such an angle to the axis x is cut that a circular cross section is created.
- the axis of rotation a of the hinge 18 about which the flow channel section part S '' is rotatable, is vertical to the articular surface 19 and thus in the preferred Design according to Figure 5 perpendicular to the axes y and z of the input and output channels 13, 17.
- Conditional due to the diagonal arrangement of the intermediate section 15 is the relevant spatial diagonal axis x always at an angle to one of the major axes of the articular surface 19th
- Figure 4 illustrates once again the arrangement of the flow channel axes x, y and z. These are within one dash-dotted in Figure 4 for improved explanation shown cube K, with the axis z of the output channel 17 approximately parallel to the surface of the cube K and the axis y of the input channel 13 accordingly the lower surface of the cube K runs.
- the axis x of the Intermediate section 15 crosses the cube K in one Space diagonals, thus lies within a space diagonal Surface RF and passes through the hinge 18 in the area the center M of the articular surface 19.
- a Helical spiral flow channel section S is in the transition area from the input channel 13 to the Intermediate section 15 upstream deflection area 14 recessed area 20 arranged in the form of a bead.
- an elevated area 21 is arranged between the deflection area 16 and the Output channel 17 . Due to the described design of the flow channel section S is an optimal guide of the Air flow L, which is schematic in Figures 2 and 4 is given. The airflow occurs from starting from the suction area A, through the nozzle mouth 11 in the input channel 13 to, starting from here, the recessed Crossing area 20, soft through the deflection area 14 to get into the intermediate section 15.
- Air flow L increases within the intermediate section 15, driving around the diagonal axis x up to the deflection area 16.
- the air flow L then passes through the elevated one Area 21, after which it enters the output channel 17. Due to the helical course of the Air flow L falls after passing through the deflection area 16 and the raised area 21 in the output channel 17, with which a self-rotation of the air flow L is initiated.
- This self-rotation of the air flow L is desired because this increases the suction power of the vacuum cleaner 1 is reached.
- the swirl of the air flow L acts in the direction of the impeller 22, which Then swirl into the impeller in the form of a stator principle 22 occurs or counteracts this, depending on Embodiment.
- the air flow L is usually with enriched with larger and finer dust particles.
- a flow channel section S is thus created, which is a significant improvement in flow resistance, Has acoustics and tendency to constipation, under Maintaining a relatively small size.
- the room diagonal x is longer than a corresponding one Area diagonal in the known prior art, wherein here also the radii of the deflection areas 14, 16 accordingly can be made larger.
- the formation of the flow channel section S can also be taken so that the helix shape of this Section S ends where it is tangential to the main working position of the vacuum cleaner 1 passes.
- Figures 6 to 10 show different embodiments the seal in the area of the swivel joint 18.
- a bearing shell 23 is arranged, which is an annular, coaxial aligned with the axis of rotation a of the swivel joint 18
- the bearing shell 23 is preferably in one annular, coaxial to the axis of rotation a, edge-open recess 26 in the region of the jacket wall of the intermediate section part 15 '.
- the bearing shell 23 is a V-ring 27 molded.
- the V-shaped projection 28 of the V-ring 27 points in the direction of the articular surface 19 of the Intermediate section part 15 '.
- the V-shaped The area assigned to the projection 28 has the intermediate section part 15 'a corresponding V-shaped recess 29, in which the V-shaped projection 28 engages in a sealing manner.
- Figure 7 is a second embodiment of the seal shown.
- the intermediate section part 15 '' inside an inner one, aligned coaxially to the axis of rotation a Recess 30 a sealing socket 31 made of elastomer material assigned, which is located on a on the Radial collar 25 of the bearing shell 23 arranged shoulder 25 'supports.
- FIG 8 alternatively shows a seal of the swivel 18, between the two intermediate sections 15 'and 15' 'leave an annular space 32 is in which a V-ring 33 inserted as a single part is.
- the V-ring 33 is chosen so that the V-shaped Projection 34 points in the direction of the axis of rotation a and the V-legs 35 sealingly against the respective Wall of the free area 32 of the intermediate section parts Put on 15 'and 15' '.
- FIG. 9 shows a solution in which the bearing shell 23 radially inside a corrugated washer 36 is molded.
- the corrugated washer 26 lies tightly against the corresponding wall of the respective intermediate section part 15 'and 15' '.
- the formation of the seal of the rotary joint 18 can however, it can also be selected as shown in FIG. 10.
- a felt washer 37 is used as a thrust bearing, which felt disk 37 is located radially outside on the radial collar 25 of the bearing shell 23 is supported.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Nozzles For Electric Vacuum Cleaners (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Electric Vacuum Cleaner (AREA)
- Manipulator (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Claims (10)
- Tronçon de canal d'écoulement (S), en particulier pour un aspirateur (1), un tronçon de canal d'entrée (13) présentant un changement de direction se prologeant par un tronçon de canal intermédiaire (15) diagonal qui se prolonge par un autre changement de direction en un tronçon de canal de sortie (17), une section transversale du tronçon de canal d'entrée (13) et du tronçon de canal de sortie (17) étant à forme elliptique, et dans lequel est réalisé dans le tronçon de canal intermédiaire (15), lorsque la section transversale du canal est circulaire, une articulation tournante (18), caractérisé en ce que, lorsque le tronçon de canal d'entrée (13) et le tronçon de canal de sortie (17) sont orientés en sens opposé, leurs axes de canal d'écoulement (y, z) s'étendent, tant dans la direction horizontale qu'également dans la direction verticale, avec un décalage mutuel, de sorte que l'axe de canal d'écoulement (x) du tronçon de canal intermédiaire (15) constitue une diagonale dans l'espace.
- Tronçon de canal d'écoulement selon la revendication 1, caractérisé en ce que l'axe de canal d'écoulement (x) du tronçon de canal intermédiaire (15) traverse l'articulation tournante (18) au centre (M) de la surface d'articulation (19) de forme circulaire, sous la forme d'une diagonale dans l'espace.
- Tronçon de canal d'écoulement selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le tronçon de canal d'entrée (13), observé depuis une zone éloignée du tronçon de canal intermédiaire (15), passe dans la direction du tronçon de canal intermédiaire (15) d'abord avant la zone d'articulation dans une zone (20) creusée par rapport à la zone d'articulation, pour se prolonger, ensuite, dans la direction correspondante de sortie, par la diagonale dans l'espace (axe de canal d'écoulement x).
- Tronçon de canal d'écoulement selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que le tronçon de canal intermédiaire (15), en partant de la zone d'articulation, dans la direction du tronçon de canal de sortie (17), évolue d'abord, avant le tronçon de canal de sortie (17), dans une zone (21) surélevée par rapport à celui-ci, pour, ensuite, se prolonger dans la direction de sortie de l'axe d'écoulement (z) du tronçon de canal de sortie (17).
- Tronçon de canal d'écoulement selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'un joint d'étanchéité (27) est monté dans l'articulation tournante (18), de telle façon que sur une partie d'articulation (15'') soit réalisée une saillie (28) en forme de V, qui s'engage dans un évidement correspondant (29) en forme de V, appartenant à la partie d'articulation (15') associée.
- Tronçon de canal d'écoulement selon la revendication 5, caractérisé en ce que la surface radialement extérieure du joint d'étanchéité en V (27) s'étend à peu près parallèlement à l'axe.
- Tronçon de canal d'écoulement selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, entre les faces se rejoignant, des parties d'articulation (15', 15''), est disposée une tubulure d'étanchéité (31) constituée en un matériau élastomère.
- Tronçon de canal d'écoulement selon l'une ou plusieurs des revendications précédentes, caractérisé en ce que, entre les surfaces associées des parties d'articulation (15', 15''), est disposée une partie annulaire (33) en forme de V.
- Tronçon de canal d'écoulement selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'un disque ondulé (36) est surmoulé par injection dans la zone d'articulation, sur l'une des parties d'articulation (15').
- Tronçon de canal d'écoulement selon l'une ou plusieurs des revendications précédentes, caractérisé en ce qu'à l'une des parties d'articulation (15'') est associé, dans la zone d'articulation, un disque en feutre (37) faisant office de palier axial.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SI9530136T SI0755214T1 (en) | 1994-04-15 | 1995-03-27 | Flow channel section, especially for a vacuum cleaner |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4413223 | 1994-04-15 | ||
DE4413223A DE4413223A1 (de) | 1994-04-15 | 1994-04-15 | Strömungskanalabschnitt für insbesondere einen Staubsauger |
PCT/EP1995/001146 WO1995028120A1 (fr) | 1994-04-15 | 1995-03-27 | Segment de canal d'ecoulement, notamment pour un aspirateur |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0755214A1 EP0755214A1 (fr) | 1997-01-29 |
EP0755214B1 true EP0755214B1 (fr) | 1998-09-09 |
Family
ID=6515617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95915163A Expired - Lifetime EP0755214B1 (fr) | 1994-04-15 | 1995-03-27 | Segment de canal d'ecoulement, notamment pour un aspirateur |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0755214B1 (fr) |
AT (1) | ATE170724T1 (fr) |
AU (1) | AU2214795A (fr) |
DE (2) | DE4413223A1 (fr) |
DK (1) | DK0755214T3 (fr) |
ES (1) | ES2121367T3 (fr) |
TW (1) | TW275569B (fr) |
WO (1) | WO1995028120A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008064211A1 (de) | 2008-12-08 | 2010-06-10 | Vorwerk & Co. Interholding Gmbh | Elektromotorisch betriebenes Flächenbearbeitungsgerät |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU710003B2 (en) * | 1996-02-07 | 1999-09-09 | Techtronic Industries Co., Ltd. | Vacuum cleaner head |
EP2633792B1 (fr) * | 2012-02-29 | 2020-05-13 | Nilfisk A/S | Buse de nettoyage de dispositifs |
EP3659486A1 (fr) | 2018-11-29 | 2020-06-03 | Koninklijke Philips N.V. | Aspirateur doté d'un tube et d'un tuyau |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3120021A (en) * | 1961-01-23 | 1964-02-04 | Whirlpool Co | Vacuum cleaner nozzle |
DE2721530C2 (de) * | 1977-05-12 | 1978-12-14 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Bürstvorsatzgerät für einen Staubsauger |
US4300262A (en) * | 1979-11-28 | 1981-11-17 | Black & Decker Inc. | Air-powered vacuum cleaner floor tool |
JP3079788B2 (ja) * | 1992-09-04 | 2000-08-21 | 株式会社日立製作所 | 電気掃除機及びその吸口 |
-
1994
- 1994-04-15 DE DE4413223A patent/DE4413223A1/de not_active Withdrawn
-
1995
- 1995-03-27 WO PCT/EP1995/001146 patent/WO1995028120A1/fr active IP Right Grant
- 1995-03-27 DK DK95915163T patent/DK0755214T3/da active
- 1995-03-27 EP EP95915163A patent/EP0755214B1/fr not_active Expired - Lifetime
- 1995-03-27 AU AU22147/95A patent/AU2214795A/en not_active Abandoned
- 1995-03-27 ES ES95915163T patent/ES2121367T3/es not_active Expired - Lifetime
- 1995-03-27 DE DE59503527T patent/DE59503527D1/de not_active Expired - Lifetime
- 1995-03-27 AT AT95915163T patent/ATE170724T1/de not_active IP Right Cessation
- 1995-06-06 TW TW084105644A patent/TW275569B/zh active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008064211A1 (de) | 2008-12-08 | 2010-06-10 | Vorwerk & Co. Interholding Gmbh | Elektromotorisch betriebenes Flächenbearbeitungsgerät |
Also Published As
Publication number | Publication date |
---|---|
DE4413223A1 (de) | 1995-10-19 |
TW275569B (fr) | 1996-05-11 |
ATE170724T1 (de) | 1998-09-15 |
WO1995028120A1 (fr) | 1995-10-26 |
ES2121367T3 (es) | 1998-11-16 |
EP0755214A1 (fr) | 1997-01-29 |
AU2214795A (en) | 1995-11-10 |
DK0755214T3 (da) | 1999-06-07 |
DE59503527D1 (de) | 1998-10-15 |
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