EP1656061B1 - Vacuum cleaner with exhaust air flow channels - Google Patents

Vacuum cleaner with exhaust air flow channels Download PDF

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Publication number
EP1656061B1
EP1656061B1 EP04741398A EP04741398A EP1656061B1 EP 1656061 B1 EP1656061 B1 EP 1656061B1 EP 04741398 A EP04741398 A EP 04741398A EP 04741398 A EP04741398 A EP 04741398A EP 1656061 B1 EP1656061 B1 EP 1656061B1
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EP
European Patent Office
Prior art keywords
flow channel
vacuum cleaner
channel
opening
cleaner according
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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
Application number
EP04741398A
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German (de)
French (fr)
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EP1656061A1 (en
Inventor
Erich Bott
Roland Illig
Jörg NIEDERGESÄSS
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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    • 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

Definitions

  • the invention relates to a vacuum cleaner according to the preamble of claim 1.
  • a vacuum cleaner which is provided within its device housing with a Straubsammelraum and a spatially and fluid downstream fan chamber, from which the air conveyed by a motor fan air flows through a blow-out.
  • deflection devices are arranged in the exhaust duct.
  • a pipe component is divided in the flow direction into a plurality of longitudinal channels. In this case, the pipe component is divided into two trains, wherein each train engages laterally next to an integrated into the device housing penetration opening and is guided from there back to respective exhaust openings.
  • the object of the invention is to enable a high noise reduction in the exhaust air flow with little effort.
  • a noise reduction should be achieved substantially without additional, complex deflection devices.
  • a vacuum cleaner with such a noise reduction should also be inexpensive to produce.
  • this object is achieved in that a first sub-channel and a second sub-channel of a flow channel for the exhaust air flow are brought together before the exhaust opening of the vacuum cleaner.
  • the merging of at least two partial air flows causes a turbulence of the partial air flows, so that a great deal of energy is dissipated from the air flow and the flow velocity is reduced.
  • the noise at the outlet of the exhaust port is then lower because the exhaust air outlet at a lower exit velocity from the exhaust port.
  • the second sub-channel forms at least one secondary flow channel, which opens into the first sub-channel, which forms a main flow channel.
  • each sub-channel is to be understood, which promotes a smaller amount of air than an associated main flow channel.
  • a secondary flow channel is designed such that the exhaust air flow flowing in the secondary flow channel flows at a higher velocity than an exhaust air flow in the main flow channel.
  • the secondary flow channel is connected to the main flow channel such that a secondary air flow supplied into the main flow channel via the secondary flow channel crosses the main air flow.
  • a particularly effective turbulence is achieved.
  • the crossing is preferably carried out by vertically colliding air streams.
  • the secondary air stream and main air stream may intersect at a different angle to each other, for example, either at an acute angle to each other or even at an obtuse angle to each other.
  • the secondary air flow and main air flow could even be directed towards one another.
  • the main flow channel is arranged to extend behind an end of the motor / blower unit opposite an intake opening.
  • bypass ducts are provided, they can be connected in the same length to the main flow duct. By the same length of the bypass ducts it is ensured that the turbulence effect is at least approximately the same at each intersection of secondary air flow and main air flow.
  • two bypass ducts are provided which are arranged to extend on opposite sides of the engine / blower unit. But it can also be arranged a plurality of each pairwise bypass ducts extending on opposite sides of the motor / blower unit, which preferably open into a common main flow channel.
  • the at least two secondary flow channels may have a rectangular cross-section and be arranged to extend substantially vertically.
  • each secondary flow channel is connected to the main flow channel via at least one inflow opening.
  • the inflow opening may be formed as a circular bore in a thin intermediate wall between the secondary flow channel and the main flow channel.
  • a sharp-edged diaphragm is created in the region of the inflow opening, at which an additional turbulence of the exhaust air flow takes place.
  • the free opening cross section of the inflow opening may preferably be smaller than the flow cross section in the remaining inflow channel.
  • the opening cross section of the at least one inflow opening is smaller than the flow cross section of the respective bypass flow channel. This results in a constriction of the flow cross section in the transition region of the bypass duct in the main flow channel.
  • a throttle may also in the manner of a venturi be educated.
  • a plurality of in particular two inflow openings can be provided in each inflow duct. The sum of the opening cross sections of the two or more inflow openings should nevertheless be smaller than the flow cross section in the remaining secondary flow channel.
  • the at least one secondary flow channel and / or the main flow channel can be arranged running between a housing part of a blower housing and a capsule part of an insulating capsule.
  • no separate components for displaying the bypass ducts or the main flow channel are necessary.
  • the boundary walls of these flow channels are then formed by the existing walls of the housing part of a blower housing or a capsule part of an insulating capsule.
  • the housing part of the blower housing and the capsule part of the insulating capsule is integrally formed.
  • the inner walls of the bypass ducts and the main flow channel can be smooth-walled, whereby no unwanted disturbing currents can be caused.
  • the housing part may advantageously be a fan cover.
  • FIGS. 1 to 5 A preferred embodiment of the invention is based on the FIGS. 1 to 5 explained in more detail below.
  • An embodiment of a vacuum cleaner according to the invention has a housing 1, the lower shell 2 in FIG. 1 is shown.
  • the lower shell 2 is formed like a trough with a bottom surface 3 and a peripheral shell wall 4.
  • the shell wall 4 extends from an edge region of the bottom surface 3 substantially vertically upwards.
  • a handle 5 is integrally formed on the lower shell 2 on the outside of the shell wall 4.
  • a partition wall 6 is arranged approximately in a middle region between the front end 7 of the lower shell 2 and a rear end 8 of the lower shell 2 in the interior of the lower shell 2.
  • the partition 6 extends from an in FIG. 1
  • the partition wall 6 divides the lower shell 2 into a front dust collecting space 11 and a rear blowing chamber 12.
  • the partition wall 6 has an inflow funnel 13, via the suction air the dust collection chamber 11 is sucked into the fan chamber 12.
  • a first capsule part 14 is integrally formed on the lower shell 2.
  • the first capsule part 14 is formed by wall sections 15a, 15b and 15c of the first capsule part 14, by a part of the partition wall 6 and a bottom part 3a of the bottom surface 3 enclosed by the wall sections 15a, 15b and 15c of the first capsule part 14.
  • the rear wall sections 15b has an open-edged recess, which has a first holding section 16 for a in FIG. 3 illustrated first bearing element 17 forms.
  • the lateral wall sections 15 a and 15 c each have an opening 18 a and 18 b, which establish a flow connection between an inner space 19 delimited by the first capsule part 14 and a channel section 20 of a flow channel 21.
  • the channel portion 20 and a part of the flow channel 21 are of the Wall portions 15 a, 15 b and 15 c of the first capsule part 14 and wall portions 22 a, 22 b and 22 c of a blower unit space 22 laterally limited.
  • the lateral wall sections 22a and 22c of the blower unit chamber 22 adjoin the rear wall sections 22b and extend forward as far as the dividing wall 6 and form a cup-shaped in the lower shell 2, by means of an airtight closing, in FIG. 4
  • a second holding portion 24 is integrally formed below a passage opening 23, which forms a protruding into the fan chamber 12 paragraph 25.
  • the paragraph 25 is half-shell-shaped and open at the top. It extends along a circular ring line concentric with the passage opening 23.
  • a second bearing element 26 can be used, which together with the first bearing element 17 a in FIG. 2 shown engine / blower unit 27 receives.
  • FIG. 2 the flow pattern is indicated by arrows P1 to P6.
  • the motor / blower unit 27 is shown in its installed position between the wall sections 15a, 15b and 15c in the lower shell 2. From the dust collecting chamber 11, air, which is cleaned by means of a filter bag or Staubabscheidebox (not shown) of dust, in the inflow funnel 13, as indicated by the arrows P1, from the front, in FIG. 2 on the right shown dust collecting space 11 in the rear, in FIG. 2 sucked on the left blower chamber 12 shown. The sucked air is passed through the passage opening 23 through the partition wall 6 and a suction port 28 of the motor / blower unit 27, as indicated by arrow P2, fed.
  • a filter bag or Staubabscheidebox (not shown) of dust
  • the sucked air flows through the motor / blower unit 27 and exits at a rear end, as indicated by the arrows P3, out of the motor / blower unit 27 and into an inner channel section 28.
  • the air flows between the housing wall of the motor / blower unit 27 and the wall portions 15a and 15c of the first capsule part 14 forward to the openings 18a and 18b.
  • the flow direction reverses, as indicated by the arrows P4 and the air now flows from front to back in the outer channel portion 20th to the rear.
  • FIG. 3 shows a cross section through a vacuum cleaner according to the invention with the lower shell 2 FIGS. 1 and 2 ,
  • Arrows P6 emerging from the plane of the drawing appear in FIG FIG. 3 as an upward arrow P6.
  • the air flows upward in the direction of the arrow P6 in a main flow passage 33 extending between the wall portions 29a of the second capsule part 30 and the wall 31 of the blower cover 32.
  • Behind the rear end of the motor / blower unit 27, the air within the main flow channel 33 is guided upward and deflected at the upper end of the vertical wall portion 29 a in a horizontal flow direction.
  • the main flow channel 33 then extends along a horizontal wall section 29b of the second capsule part 30 below the blower compartment cover 32 to an inflow opening 34 below a blow-off filter 35.
  • the exhaust filter 35 rests with its upstream surface at the flow opening 34. At the exhaust filter 35 residual particles that are still contained in the air stream can be deposited. Behind the downstream surface of the Ausblasfilters 35 of the purified air stream leaves the vacuum cleaner via a plurality of exhaust ports 36, which is formed as a slats having exhaust grille.
  • the handle 5, the partition 6, and the wall portions 15 of the first capsule part 14 and the wall portions 22 of the fan chamber 12 are formed on the lower shell 2, which is produced as a one-piece injection molded plastic part.
  • An upper shell 37 covers the fan chamber 12 and a cable compartment 38 for receiving a cable drum 39 (in FIG FIG. 4 shown).
  • the upper outer contour of the vacuum cleaner is completed by a dust compartment cover 40, which attaches to the upper shell 37 and extends from a rear end 41 in the vicinity of the discharge opening 36 to a front end 42.
  • the front end 42 of the dust chamber cover 40 has a locking element 43 which fixes the pivotally mounted dust chamber cover 40 by means of a counter-locking element 44 on the lower shell 2 in a closed position.
  • the dust collecting space 11 circumferential top wall 45 projects into a dust collecting space 11 circumferential groove 46 in which a sealing cord 47 is inserted.
  • the groove 46 is integrally formed on an upper end of a molded on the bottom shell 2, the dust collecting space 11 circumferential dust chamber wall 48.
  • a dusty air opening 49 is introduced, to which a Saugschlauchstutzen not shown can be connected.
  • On the dust chamber cover 40 is an outwardly open niche 50 for receiving accessories 54a, 54b, such as crevices, upholstery, furniture brush or instructions for use or information sheets formed.
  • the niche 50 which is open towards the outside is covered by an accessory cover 52 mounted on the dust chamber cover 40 by means of a pivot bearing 51.
  • a receiving pallet 53 can be removably inserted for the correct fixing of the accessories 54a, 54b, which is preferably made of a flat, thermoplastic plastic film and formed in a blowing process in a spatial structure.
  • FIG. 4 shows a blower compartment cover 32 according to the invention in a perspective view.
  • the fan cover 32 is formed as an approximately cuboid shell body. Perpendicular to an upper ceiling wall 55 close in FIG. 4 Right side shown first side wall portion 56 and a in FIG. 4 On the left side shown second side wall portion 57, and a rear rear wall portion 58 at.
  • the first side wall portion 56, the second side wall portion 57 and the rear wall portion 58 are connected at their side edges to each other to a U-shaped side wall 59 of the fan cover 32.
  • the inflow opening 34 is integrated.
  • the ceiling wall 55 of the front wall portion 29 d of the second capsule part 30 is integrally formed by means of a connecting web 59.
  • the front wall portion 29 d of the second capsule part 30 is laterally connected to the first wall portion 56 and the second wall portion 57 of the fan cover 32.
  • the front wall section 29d is semi-circular disk-shaped and has a semicircular edge-open cutout 60 for receiving the second bearing element 26 of the motor / fan unit 27.
  • the rear vertical wall section 29a of the second capsule section 30 is integrally formed on the fan compartment cover 32.
  • the main flow channel 33 extends in the direction of the inflow opening 34 in the top wall 55.
  • a first bypass passage 61a extends between the wall sections 29a and 29d.
  • a second bypass passage 61b extends between the side wall portions 29b and the second side wall portion 57.
  • FIG. 5 the first secondary flow channel 61a and the second secondary flow channel 61b are shown in a cross section through the longitudinal axis of the vacuum cleaner according to the invention. It is the lower shell 2 with the molded wall portions 22a and 22c of the fan chamber 12 is shown. Within the fan chamber 12, the wall portions 15 a and 15 c of the first capsule part 14 are integrally formed on the bottom surface 3. Of the wall portion 22a and the wall portion 15a, the first bypass passage 61a is defined.
  • a first bleed air flow in the bypass passage 61a flows upward between the wall portion 29c and the first side wall portion 56 of the fan cover 32, and a second bleed air flow flows upward in the bypass passage 61b, between the wall portion 29b and the second side wall portion 57 the blower compartment cover 32.
  • a groove-shaped seal assembly 63 is formed at a lower edge 62 of the side wall portions 56 and 57, and the rear wall portion 58 (not shown).
  • a groove-shaped seal assembly 63 is formed at a lower edge 62 of the side wall portions 56 and 57, and the rear wall portion 58 (not shown).
  • a sealing cord may be inserted into the groove.
  • the sealing arrangement 63 closes a parting line between the fan chamber cover 32 and the fan chamber 12.
  • a further sealing arrangement 65 is provided between the first capsule part 14 and the second capsule part 30.
  • the seal assembly 65 is formed as a labyrinth seal.
  • the wall sections 15a, 15b and 15c of the first capsule part 14 partially cover the wall sections 29a, 29b and 29c of the second capsule part 30.
  • the secondary air flows, as indicated by the arrows P9, perpendicular to the main air flows P7.
  • the air is entangled and enters the inlet opening 34 in a diffuse flow, as indicated by the arrows P10.
  • the blow-out filter 35 is in a molded-on to the blower compartment cover 32 holder 67 (FIGS. FIG. 4 ) used.
  • the holder has a peripheral edge shoulder 68, on which a seal 69 is integrally formed, on which the exhaust filter 35 rests sealingly. As in FIG. 4 shown is on the fan cover 32 not only the holder 67 but also a cable run 70 integrally formed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electric Suction Cleaners (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a vacuum cleaner, comprising a housing (1) and an exhaust opening (36) for an exhaust flow, connected to a pressurised side of a motor/fan unit (27) by means of a flow channel (21) which has a branched embodiment to divide the exhaust flow into at least one first part channel (33) and a second part channel (61). According to the invention, a high noise reduction in the exhaust flow may be achieved with low complexity, whereby the first part channel (33) and the second part channel (61) are combined before the exhaust opening (36). An effective noise reduction is achieved, essentially without additional complex baffle devices.

Description

Die Erfindung betrifft einen Staubsauger nach dem Oberbegriff des Anspruchs 1.The invention relates to a vacuum cleaner according to the preamble of claim 1.

Aus DE 38 15 320 A1 ist ein Staubsauger bekannt, der innerhalb seines Gerätegehäuses mit einem Straubsammelraum und einem räumlich wie strömungsmäßig nachgeordneten Gebläseraum versehen ist, aus dem die von einem Motorgebläse geförderte Luft durch einen Ausblaskanal ausströmt. Um eine hohe Geräuschdämpfung bei geringem Aufwand zu erreichen, sind im Ausblaskanal Umlenkvorrichtungen angeordnet. Ein Rohrbauteil ist dabei in Strömungsrichtung in mehrere Längskanäle unterteilt. Dabei ist das Rohrbauteil in zwei Züge geteilt, wobei je ein Zug seitlich neben eine in das Gerätegehäuse integrierte Durchgrifföffnung greift und erst von dort zurück zu jeweiligen Ausblasöffnungen geführt ist. Nachteilig hierbei ist es jedoch, dass eine durch die im Ausblaskanal angeordneten Umlenkvorrichtungen erzeugte Verwirbelung der Ausblasluft in den abströmseitig folgenden Längskanälen des Rohrbauteils zumindest teilweise wieder vergleichmäßigt werden, wodurch die Geräuschdämpfung nicht optimal ist. Aus der US 4970753 ist ein Staubsauger gemäß dem Oberbegriff des Anspruchs 1 offenbart.Out DE 38 15 320 A1 a vacuum cleaner is known, which is provided within its device housing with a Straubsammelraum and a spatially and fluid downstream fan chamber, from which the air conveyed by a motor fan air flows through a blow-out. In order to achieve a high noise attenuation with little effort, deflection devices are arranged in the exhaust duct. A pipe component is divided in the flow direction into a plurality of longitudinal channels. In this case, the pipe component is divided into two trains, wherein each train engages laterally next to an integrated into the device housing penetration opening and is guided from there back to respective exhaust openings. The disadvantage here, however, is that a swirling of the blow-out air generated by the deflecting devices arranged in the blow-out duct is at least partially evened out again in the downstream channels of the pipe component, whereby the noise damping is not optimal. From the US 4970753 a vacuum cleaner according to the preamble of claim 1 is disclosed.

Aufgabe der Erfindung ist es, eine hohe Geräuschminderung im Abluftstrom mit geringen Aufwand zu ermöglichen. Insbesondere soll eine Geräuschminderung im wesentlichen ohne zusätzliche, aufwendige Umlenkvorrichtungen erzielt werden. Ein Staubsauger mit einer solchen Geräuschminderung soll auch kostengünstig herstellbar sein.The object of the invention is to enable a high noise reduction in the exhaust air flow with little effort. In particular, a noise reduction should be achieved substantially without additional, complex deflection devices. A vacuum cleaner with such a noise reduction should also be inexpensive to produce.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, dass ein erster Teilkanal und ein zweiter Teilkanal eines Strömungskanals für den Abluftstrom vor der Ausblasöffnung des Staubsaugers zusammengeführt sind.According to the invention, this object is achieved in that a first sub-channel and a second sub-channel of a flow channel for the exhaust air flow are brought together before the exhaust opening of the vacuum cleaner.

Durch das Zusammenführen mindestens zweier Teilluftströme kommt es zu einer Verwirbelung der Teilluftströme, so dass viel Energie aus der Luftströmung abgebaut wird und die Strömungsgeschwindigkeit reduziert wird. Die Geräuschentwicklung am Ausgang der Ausblasöffnung ist dann geringer, da der Abluftstrom mit einer geringeren Austrittsgeschwindigkeit aus der Ausblasöffnung austritt. Indem die Teilluftströme sich gegenseitig verwirbeln kann auf gesonderte Umlenkvorrichtungen zur Strömungsbeeinflussung verzichtet werden.The merging of at least two partial air flows causes a turbulence of the partial air flows, so that a great deal of energy is dissipated from the air flow and the flow velocity is reduced. The noise at the outlet of the exhaust port is then lower because the exhaust air outlet at a lower exit velocity from the exhaust port. By the partial air streams can swirl each other can be dispensed with separate deflection devices for influencing the flow.

Der zweite Teilkanal bildet mindestens einen Nebenströmungskanal, der in den ersten Teilkanal mündet, der einen Hauptströmungskanal bildet. Als Nebenströmungskanal ist jeder Teilkanal zu verstehen, der eine geringere Luftmenge fördert als ein zugeordneter Hauptströmungskanal. Vorzugsweise ist ein Nebenströmungskanal derart gestaltet, dass der im Nebenströmungskanal strömende Abluftstrom mit einer höheren Geschwindigkeit strömt als ein Abluftstrom im Hauptströmungskanal.The second sub-channel forms at least one secondary flow channel, which opens into the first sub-channel, which forms a main flow channel. As a bypass duct, each sub-channel is to be understood, which promotes a smaller amount of air than an associated main flow channel. Preferably, a secondary flow channel is designed such that the exhaust air flow flowing in the secondary flow channel flows at a higher velocity than an exhaust air flow in the main flow channel.

Der Nebenströmungskanal ist mit dem Hauptströmungskanal derart verbunden, dass ein über den Nebenströmungskanal in den Hauptströmungskanal zugeführter Nebenluftstrom den Hauptluftstrom kreuzt. Durch Kreuzen der Strömungsrichtungen von Nebenluftstrom und Hauptluftstrom wird eine besonders effektive Verwirbelung erzielt. Das Kreuzen erfolgt vorzugsweise durch senkrecht aufeinandertreffende Luftströme. Der Nebenluftstrom und Hauptluftstrom können sich jedoch auch in einem anderen Winkel zueinander kreuzen, so beispielsweise entweder in einem spitzen Winkel zu einander oder sogar in einem Stumpfen Winkel zueinander. Der Nebenluftstrom und Hauptluftstrom könnten sogar frontal aufeinander zu gerichtet sein. Vorteilhafterweise ist der Hauptströmungskanal hinter einem einer Ansaugöffnung gegenüberliegenden Ende des Motor-/Gebläseaggregats verlaufend angeordnet. Durch diese Lage von Hauptströmungskanal kann der Hauptluftstrom mittig zum Motor-/Gebläseaggregat in Richtung auf die Ausblasöffnung zugeführt werden. Wenn mehrere Nebenströmungskanäle vorgesehen sind, können diese in gleicher Länge ausgebildet an den Hauptströmungskanal angeschlossen werden. Durch die gleiche Länge der Nebenströmungskanäle ist sichergestellt, dass der Verwirbelungseffekt an jeder Kreuzung von Nebenluftströmung und Hauptluftströmung zumindest annähernd gleich ist. Vorzugsweise sind zwei Nebenströmungskanäle vorgesehen, die an gegenüberliegenden Seiten des Motor-/Gebläseaggregats verlaufend angeordnet sind. Es können aber auch eine Vielzahl von jeweils paarweisen Nebenströmungskanäle an gegenüberliegenden Seiten des Motor-/Gebläseaggregats verlaufend angeordnet sein, die vorzugsweise in einen gemeinsamen Hauptströmungskanal münden.The secondary flow channel is connected to the main flow channel such that a secondary air flow supplied into the main flow channel via the secondary flow channel crosses the main air flow. By crossing the flow directions of secondary air flow and main air flow, a particularly effective turbulence is achieved. The crossing is preferably carried out by vertically colliding air streams. However, the secondary air stream and main air stream may intersect at a different angle to each other, for example, either at an acute angle to each other or even at an obtuse angle to each other. The secondary air flow and main air flow could even be directed towards one another. Advantageously, the main flow channel is arranged to extend behind an end of the motor / blower unit opposite an intake opening. Through this position of the main flow channel, the main air flow can be supplied centrally to the motor / blower unit in the direction of the exhaust opening. If several bypass ducts are provided, they can be connected in the same length to the main flow duct. By the same length of the bypass ducts it is ensured that the turbulence effect is at least approximately the same at each intersection of secondary air flow and main air flow. Preferably, two bypass ducts are provided which are arranged to extend on opposite sides of the engine / blower unit. But it can also be arranged a plurality of each pairwise bypass ducts extending on opposite sides of the motor / blower unit, which preferably open into a common main flow channel.

Die mindestens zwei Nebenströmungskanäle können einen rechteckigen Querschnitt aufweisen und im wesentlichen vertikal erstreckend angeordnet sein. Durch diese Anordnung ergibt sich ein guter Zug in den Nebenströmungskanäle und das die Nebenströmungskanäle aufweisende Gehäuseteil des Staubsaugers ist trotzdem in einfacher Weise und kostengünstig herzustellen.The at least two secondary flow channels may have a rectangular cross-section and be arranged to extend substantially vertically. By this arrangement, there is a good train in the secondary flow channels and the side flow channels having housing part of the vacuum cleaner is still in a simple manner and inexpensive to manufacture.

Vorzugsweise ist jeder Nebenströmungskanal über mindestens eine Zuströmöffnung mit dem Hauptströmungskanal verbunden. Die Zuströmöffnung kann als kreisförmige Bohrung in einer dünnen Zwischenwand zwischen Nebenströmungskanal und Hauptströmungskanal ausgebildet sein. Dadurch ist im Bereich der Zuströmöffnung eine scharkantige Blende geschaffen, an der eine zusätzliche Verwirbelung des Abluftstromes erfolgt. Dabei kann der freie Öffnungsquerschnitt der Zuströmöffnung vorzugsweise kleiner sein als der Strömungsquerschnitt im übrigen Nebenströmungskanal.Preferably, each secondary flow channel is connected to the main flow channel via at least one inflow opening. The inflow opening may be formed as a circular bore in a thin intermediate wall between the secondary flow channel and the main flow channel. As a result, a sharp-edged diaphragm is created in the region of the inflow opening, at which an additional turbulence of the exhaust air flow takes place. In this case, the free opening cross section of the inflow opening may preferably be smaller than the flow cross section in the remaining inflow channel.

In einer bevorzugten Ausgestaltung der Erfindung ist der Öffnungsquerschnitt der mindestens einen Zuströmöffnung kleiner als der Strömungsquerschnitt des jeweiligen Nebenströmungskanals. Dadurch ergibt sich eine Einschnürung des Strömungsquerschnitts im Übertrittbereich des Nebenströmungskanals in den Hauptströmungskanal. Eine solche Drosselstelle kann auch in Art einer Venturidüse ausgebildet sein. Statt einer einzigen Zuströmöffnung können in jedem Nebenströmungskanal mehrere insbesondere zwei Zuströmöffnungen vorgesehen sein. Die Summe der Öffnungsquerschnitte der zwei oder mehreren Zuströmöffnungen soll dabei dennoch kleiner sein als der Strömungsquerschnitt im übrigen Nebenströmungskanal.In a preferred embodiment of the invention, the opening cross section of the at least one inflow opening is smaller than the flow cross section of the respective bypass flow channel. This results in a constriction of the flow cross section in the transition region of the bypass duct in the main flow channel. Such a throttle may also in the manner of a venturi be educated. Instead of a single inflow opening, a plurality of in particular two inflow openings can be provided in each inflow duct. The sum of the opening cross sections of the two or more inflow openings should nevertheless be smaller than the flow cross section in the remaining secondary flow channel.

In einfacher Weise kann der mindestens eine Nebenströmungskanal und/oder der Hauptströmungskanal zwischen einem Gehäuseteil eines Gebläsegehäuses und eines Kapselteils einer Isolierkapsel verlaufend angeordnet sein. So sind keine gesonderten Bauteile zur Darstellung der Nebenströmungskanäle bzw. des Hauptströmungskanals nötig. Die Begrenzungswände dieser Strömungskanäle werden dann durch die vorhandenen Wände des Gehäuseteils eines Gebläsegehäuses oder eines Kapselteils einer Isolierkapsel gebildet.In a simple manner, the at least one secondary flow channel and / or the main flow channel can be arranged running between a housing part of a blower housing and a capsule part of an insulating capsule. Thus, no separate components for displaying the bypass ducts or the main flow channel are necessary. The boundary walls of these flow channels are then formed by the existing walls of the housing part of a blower housing or a capsule part of an insulating capsule.

Vorzugsweise ist das Gehäuseteil des Gebläsegehäuses und das Kapselteil der Isolierkapsel einstückig ausgebildet. So sind keine Stufen oder Kanten an der Innenwand der Nebenströmungskanäle bzw. des Hauptströmungskanals vorhanden, wie es bei zusammengesetzten Bauteilen mit Trennfugen der Fall wäre. Bei der einstückigen Ausbildung können die Innenwände der Nebenströmungskanäle bzw. des Hauptströmungskanals glattwandig sein, wodurch keine ungewollten Störströmungen verursacht werden können. Das Gehäuseteil kann vorteilhafter Weise eine Gebläseraumabdeckung sein.Preferably, the housing part of the blower housing and the capsule part of the insulating capsule is integrally formed. Thus, there are no steps or edges on the inner wall of the bypass ducts or the main flow channel, as would be the case with composite components with joints. In the one-piece design, the inner walls of the bypass ducts and the main flow channel can be smooth-walled, whereby no unwanted disturbing currents can be caused. The housing part may advantageously be a fan cover.

Eine bevorzugte Ausgestaltung der Erfindung ist anhand der Figuren 1 bis 5 im folgenden näher erläutert.A preferred embodiment of the invention is based on the FIGS. 1 to 5 explained in more detail below.

Es zeigen:

Figur 1
eine perspektivische Ansicht einer Unterschale eines erfindungsgemäßen Staubsaugers;
Figur 2
eine Draufsicht auf die Unterschale aus Figur 1;
Figur 3
einen Querschnitt durch einen erfindungsgemäßen Staubsauger mit einer Unterschale gemäß Figuren 1 und 2;
Figur 4
eine perspektivische Ansicht einer erfindungsgemäßen Gebläseraumabdeckung;
Figur 5
einen Querschnitt durch die Längsachse eines erfindungsgemäßen Staubsaugers.
Show it:
FIG. 1
a perspective view of a lower shell of a vacuum cleaner according to the invention;
FIG. 2
a plan view of the lower shell FIG. 1 ;
FIG. 3
a cross section through a vacuum cleaner according to the invention with a lower shell according to FIGS. 1 and 2 ;
FIG. 4
a perspective view of a fan cover according to the invention;
FIG. 5
a cross section through the longitudinal axis of a vacuum cleaner according to the invention.

Ein Ausführungsbeispiel eines erfindungsgemäßen Staubsaugers weist eine Gehäuse 1 auf, dessen Unterschale 2 in Figur 1 gezeigt ist. Die Unterschale 2 ist wannenartig mit einer Bodenfläche 3 und einer umlaufenden Schalenwand 4 ausgebildet. Die Schalenwand 4 erstreckt sich ausgehend von einem Randbereich der Bodenfläche 3 im wesentlichen senkrecht nach oben. An einem vorderen Ende der Unterschale 1 ist an der Außenseite der Schalenwand 4 ein Griff 5 an die Unterschale 2 angeformt. Eine Trennwand 6 ist etwa in einem mittleren Bereich zwischen dem vorderen Ende 7 der Unterschale 2 und einem hinteren Ende 8 der Unterschale 2 im Innenraum der Unterschale 2 angeordnet. Die Trennwand 6 erstreckt sich von einem in Figur 1 links vorne dargestellten ersten Seitenwandabschnitt 9 bis zu einem rechts hinten dargestellten zweiten Seitenwandabschnitt 10 der Schalenwand 4. Die Trennwand 6 teilt die Unterschale 2 in einen vorderen Staubsammelraum 11 und einen hinteren Gebläseraum 12. Die Trennwand 6 weist einen Einströmtrichter 13 auf, über den Saugluft aus dem Staubsammelraum 11 in den Gebläseraum 12 angesaugt wird.An embodiment of a vacuum cleaner according to the invention has a housing 1, the lower shell 2 in FIG. 1 is shown. The lower shell 2 is formed like a trough with a bottom surface 3 and a peripheral shell wall 4. The shell wall 4 extends from an edge region of the bottom surface 3 substantially vertically upwards. At a front end of the lower shell 1, a handle 5 is integrally formed on the lower shell 2 on the outside of the shell wall 4. A partition wall 6 is arranged approximately in a middle region between the front end 7 of the lower shell 2 and a rear end 8 of the lower shell 2 in the interior of the lower shell 2. The partition 6 extends from an in FIG. 1 The partition wall 6 divides the lower shell 2 into a front dust collecting space 11 and a rear blowing chamber 12. The partition wall 6 has an inflow funnel 13, via the suction air the dust collection chamber 11 is sucked into the fan chamber 12.

Im Gebläseraum 12 ist ein erster Kapselteil 14 an die Unterschale 2 angeformt. Der erste Kapselteil 14 wird durch Wandabschnitte 15a, 15b und 15c des ersten Kapselteils 14, durch einen Teil der Trennwand 6 und einem von den Wandabschnitten 15a, 15b und 15c des ersten Kapselteils 14 umschlossenen Bodenteil 3a der Bodenfläche 3 gebildet. Der hintere Wandabschnitte 15b weist eine randoffene Freisparung auf, die einen ersten Halteabschnitt 16 für ein in Figur 3 dargestelltes erstes Lagerelement 17 bildet. Die seitlichen Wandabschnitte 15a und 15c weisen jeweils eine Öffnung 18a und 18b auf, die eine Strömungsverbindung zwischen einem von dem ersten Kapselteil 14 umgrenzten Innenraum 19 und einem Kanalabschnitt 20 eines Strömungskanals 21 herstellen. Der Kanalabschnitt 20 und ein Teil des Strömungskanals 21 werden von den Wandabschnitten 15a, 15b und 15c des ersten Kapselteils 14 und Wandabschnitten 22a, 22b und 22c eines Gebläseaggregatraums 22 seitlich begrenzt. Die seitlichen Wandabschnitte 22a und 22c des Gebläseaggregatraums 22 schließen sich an den hinteren Wandabschnitte 22b an und erstrecken sich nach vorne bis an die Trennwand 6 heran und bilden in der Unterschale 2 einen schalenförmigen, mittels eine luftdicht abschließenden, in Figur 4 näher beschriebenen Gebläseraumabdeckung, einen geschlossenen Gebläseaggregatraum 22. An der Trennwand 6 ist unterhalb einer Durchtrittsöffnung 23 ein zweiter Halteabschnitt 24 angeformt, der einen in den Gebläseraum 12 hineinragenden Absatz 25 bildet. Der Absatz 25 ist halbschalenförmig und nach oben hin offen ausgebildet. Er erstreckt sich entlang einer zur Durchtrittsöffnung 23 konzentrischen Kreisringlinie. In den Absatz 25 ist ein zweites Lagerelement 26 einsetzbar, das zusammen mit dem ersten Lagerelement 17 ein in Figur 2 dargestelltes Motor-/Gebläseaggregat 27 aufnimmt.In the fan chamber 12, a first capsule part 14 is integrally formed on the lower shell 2. The first capsule part 14 is formed by wall sections 15a, 15b and 15c of the first capsule part 14, by a part of the partition wall 6 and a bottom part 3a of the bottom surface 3 enclosed by the wall sections 15a, 15b and 15c of the first capsule part 14. The rear wall sections 15b has an open-edged recess, which has a first holding section 16 for a in FIG. 3 illustrated first bearing element 17 forms. The lateral wall sections 15 a and 15 c each have an opening 18 a and 18 b, which establish a flow connection between an inner space 19 delimited by the first capsule part 14 and a channel section 20 of a flow channel 21. The channel portion 20 and a part of the flow channel 21 are of the Wall portions 15 a, 15 b and 15 c of the first capsule part 14 and wall portions 22 a, 22 b and 22 c of a blower unit space 22 laterally limited. The lateral wall sections 22a and 22c of the blower unit chamber 22 adjoin the rear wall sections 22b and extend forward as far as the dividing wall 6 and form a cup-shaped in the lower shell 2, by means of an airtight closing, in FIG. 4 On the partition wall 6, a second holding portion 24 is integrally formed below a passage opening 23, which forms a protruding into the fan chamber 12 paragraph 25. The paragraph 25 is half-shell-shaped and open at the top. It extends along a circular ring line concentric with the passage opening 23. In paragraph 25, a second bearing element 26 can be used, which together with the first bearing element 17 a in FIG. 2 shown engine / blower unit 27 receives.

In Figur 2 ist der Strömungsverlauf mittels Pfeilen P1 bis P6 kenntlich gemacht. Das Motor-/Gebläseaggregat 27 ist in seiner Einbaulage zwischen den Wandabschnitten 15a, 15b und 15c in der Unterschale 2 dargestellt. Aus dem Staubsammelraum 11 wird Luft, die mittels eines Filterbeutels oder einer Staubabscheidebox (nicht dargestellt) von Staub gereinigt ist, in den Einströmtrichter 13, wie durch die Pfeile P1 angedeutet, aus dem vorderen, in Figur 2 rechts dargestellten Staubsammelraum 11 in den hinteren, in Figur 2 links dargestellten Gebläseraum 12 angesaugt. Die angesaugte Luft wird über die Durchtrittsöffnung 23 durch die Trennwand 6 geführt und einer Ansaugöffnung 28 des Motor-/Gebläseaggregats 27, wie durch Pfeil P2 angedeutet, zugeleitet. Die angesaugte Luft durchströmt das Motor-/Gebläseaggregat 27 und tritt an einem hinteren Ende, wie durch die Pfeile P3 angedeutet, aus dem Motor-/Gebläseaggregat 27 heraus und in einen inneren Kanalabschnitt 28 ein. Im inneren Kanalabschnitt 28 strömt die Luft zwischen der Gehäusewand des Motor-/Gebläseaggregats 27 und den Wandabschnitten 15a und 15c des ersten Kapselteils 14 nach vorne zu den Öffnungen 18a und 18b. Nachdem die nach vorne strömende Luft durch die Öffnungen 18a und 18b aus dem inneren Kanalabschnitt 28 in den äußeren Kanalabschnitt 20 eingetreten ist, kehrt sich die Strömungsrichtung, wie durch die Pfeile P4 angedeutet um und die Luft strömt nun von vorne nach hinten im äußeren Kanalabschnitt 20 nach hinten. Im äußeren Kanalabschnitt 20 wird die Luft am hinteren Ende des Motor-/Gebläseaggregats 27 in einem rechten Winkel, wie durch die Pfeile P5 angedeutet, hinter den Wandabschnitt 15b des ersten Kapselteils 14 umgelenkt. Die in Figur 2 angedeuteten Pfeile P6 zeigen an, dass die Luft am Ende des äußeren Kanalabschnitts 20 hinter dem Motor-/Gebläseaggregat 27 in eine Richtung umgelenkt wird, die aus der Zeichnungsebene von Figur 2 heraustritt, um zwischen einem vertikalen Wandabschnitt 29a eines zweiten Kapselteils 30 und einer Wand 31 einer Gebläseraumabdeckung 32 wie in Figur 3 gezeigt, weitergeleitet zu werden.In FIG. 2 the flow pattern is indicated by arrows P1 to P6. The motor / blower unit 27 is shown in its installed position between the wall sections 15a, 15b and 15c in the lower shell 2. From the dust collecting chamber 11, air, which is cleaned by means of a filter bag or Staubabscheidebox (not shown) of dust, in the inflow funnel 13, as indicated by the arrows P1, from the front, in FIG. 2 on the right shown dust collecting space 11 in the rear, in FIG. 2 sucked on the left blower chamber 12 shown. The sucked air is passed through the passage opening 23 through the partition wall 6 and a suction port 28 of the motor / blower unit 27, as indicated by arrow P2, fed. The sucked air flows through the motor / blower unit 27 and exits at a rear end, as indicated by the arrows P3, out of the motor / blower unit 27 and into an inner channel section 28. In the inner channel portion 28, the air flows between the housing wall of the motor / blower unit 27 and the wall portions 15a and 15c of the first capsule part 14 forward to the openings 18a and 18b. After the forward flowing air has entered through the openings 18a and 18b from the inner channel portion 28 in the outer channel portion 20, the flow direction reverses, as indicated by the arrows P4 and the air now flows from front to back in the outer channel portion 20th to the rear. In the outer channel portion 20, the air at the rear end of the motor / blower unit 27 at a right angle, as indicated by the arrows P5, deflected behind the wall portion 15 b of the first capsule part 14. In the FIG. 2 Indicated arrows P6 indicate that the air is deflected at the end of the outer channel portion 20 behind the motor / blower unit 27 in a direction from the drawing plane of FIG. 2 emerges between a vertical wall portion 29 a of a second capsule part 30 and a wall 31 of a fan cover 32 as in FIG. 3 shown to be forwarded.

Figur 3 zeigt einen Querschnitt durch einen erfindungsgemäßen Staubsauger mit der Unterschale 2 aus Figuren 1 und 2. Die in Figur 2 aus der Zeichnungsebene heraustretend dargestellten Pfeile P6 erscheinen in Figur 3 als ein nach oben gerichteter Pfeil P6. Die Luft strömt in Richtung des Pfeils P6 in einem zwischen den Wandabschnitten 29a des zweiten Kapselteils 30 und der Wand 31 der Gebläseraumabdeckung 32 verlaufenden Hauptströmungskanals 33 nach oben. Hinter dem rückseitigen Ende des Motor-/Gebläseaggregats 27 wird die Luft innerhalb des Hauptströmungskanals 33 nach oben geführt und am oberen Ende des vertikalen Wandabschnitts 29a in eine horizontale Strömungsrichtung umgelenkt. Der Hauptströmungskanal 33 verläuft anschließend entlang eines horizontalen Wandabschnitts 29b des zweiten Kapselteils 30 unterhalb der Gebläseraumabdeckung 32 auf eine Anströmöffnung 34 unterhalb eines Ausblasfilters 35 zu. Das Ausblasfilter 35 liegt mit seiner anströmseitigen Oberfläche an der Anströmöffnung 34 an. Am Ausblasfilter 35 können Restpartikel, die in dem Luftstrom noch enthalten sind, abgeschieden werden. Hinter der abströmseitigen Oberfläche des Ausblasfilters 35 verlässt der gereinigte Luftstrom den Staubsauger über eine Vielzahl von Ausblasöffnungen 36, die als Lamellen aufweisendes Ausblasgitter ausgebildet ist. FIG. 3 shows a cross section through a vacuum cleaner according to the invention with the lower shell 2 FIGS. 1 and 2 , In the FIG. 2 Arrows P6 emerging from the plane of the drawing appear in FIG FIG. 3 as an upward arrow P6. The air flows upward in the direction of the arrow P6 in a main flow passage 33 extending between the wall portions 29a of the second capsule part 30 and the wall 31 of the blower cover 32. Behind the rear end of the motor / blower unit 27, the air within the main flow channel 33 is guided upward and deflected at the upper end of the vertical wall portion 29 a in a horizontal flow direction. The main flow channel 33 then extends along a horizontal wall section 29b of the second capsule part 30 below the blower compartment cover 32 to an inflow opening 34 below a blow-off filter 35. The exhaust filter 35 rests with its upstream surface at the flow opening 34. At the exhaust filter 35 residual particles that are still contained in the air stream can be deposited. Behind the downstream surface of the Ausblasfilters 35 of the purified air stream leaves the vacuum cleaner via a plurality of exhaust ports 36, which is formed as a slats having exhaust grille.

An der Unterschale 2, die als einteiliges Kunststoffspritzgussteil hergestellt ist, sind der Griff 5, die Trennwand 6, sowie die Wandabschnitte 15 des ersten Kapselteils 14 und die Wandabschnitte 22 des Gebläseraumes 12 angeformt. Eine Oberschale 37 überdeckt den Gebläseraum 12 und einen Kabelraum 38 zur Aufnahme einer Kabeltrommel 39 auf (in Figur 4 dargestellt). Die obere Außenkontur des Staubsaugers wird durch einen Staubraumdeckel 40 vervollständigt, der sich an die Oberschale 37 anfügt und sich von einem hinteren Ende 41 in Nähe der Ausblasöffnung 36 bis zu einem vorderen Ende 42 erstreckt. Das vordere Ende 42 des Staubraumdeckels 40 weist ein Verriegelungselement 43 auf, das den schwenkbar gelagerten Staubraumdeckel 40 mittels eines Gegenrastelements 44 an der Unterschale 2 in einer geschlossenen Position fixiert. Eine am Staubraumdeckel 40 angeformte, den Staubsammelraum 11 umlaufende Deckelwand 45 ragt in eine den Staubsammelraum 11 umlaufende Nut 46 hinein, in der eine Dichtschnur 47 eingelegt ist. Die Nut 46 ist an einem oberen Ende einer an der Bodenschale 2 angeformten, den Staubsammelraum 11 umlaufenden Staubraumwand 48 angeformt. Im Staubraumdeckel 40 ist eine Staubluftöffnung 49 eingebracht, an der ein nicht dargestellte Saugschlauchstutzen anschließbar ist. Am Staubraumdeckel 40 ist eine nach außen hin offene Nische 50 zur Aufnahme von Zubehörteilen 54a, 54b , wie Fugendüsen, Polsterdüsen, Möbelpinsel oder von Gebrauchsanweisungen bzw. Informationsblätter ausgebildet. Die nach außen hin offene Nische 50 ist durch einen mittels eines Schwenklagers 51 am Staubraumdeckel 40 gelagerten Zubehördeckels 52 abgedeckt. In der Nische 51 kann zur lagerichtigen Befestigung der Zubehörteile 54a, 54b eine Aufnahmepalette 53 entnehmbar eingesetzt sein, die vorzugsweise aus einer ebenen, thermoplastischen Kunststoffolie hergestellt und im Blasverfahren in eine räumliche Struktur ausgeformt ist.On the lower shell 2, which is produced as a one-piece injection molded plastic part, the handle 5, the partition 6, and the wall portions 15 of the first capsule part 14 and the wall portions 22 of the fan chamber 12 are formed. An upper shell 37 covers the fan chamber 12 and a cable compartment 38 for receiving a cable drum 39 (in FIG FIG. 4 shown). The upper outer contour of the vacuum cleaner is completed by a dust compartment cover 40, which attaches to the upper shell 37 and extends from a rear end 41 in the vicinity of the discharge opening 36 to a front end 42. The front end 42 of the dust chamber cover 40 has a locking element 43 which fixes the pivotally mounted dust chamber cover 40 by means of a counter-locking element 44 on the lower shell 2 in a closed position. A formed on the dust chamber cover 40, the dust collecting space 11 circumferential top wall 45 projects into a dust collecting space 11 circumferential groove 46 in which a sealing cord 47 is inserted. The groove 46 is integrally formed on an upper end of a molded on the bottom shell 2, the dust collecting space 11 circumferential dust chamber wall 48. In the dust chamber cover 40, a dusty air opening 49 is introduced, to which a Saugschlauchstutzen not shown can be connected. On the dust chamber cover 40 is an outwardly open niche 50 for receiving accessories 54a, 54b, such as crevices, upholstery, furniture brush or instructions for use or information sheets formed. The niche 50 which is open towards the outside is covered by an accessory cover 52 mounted on the dust chamber cover 40 by means of a pivot bearing 51. In the niche 51, a receiving pallet 53 can be removably inserted for the correct fixing of the accessories 54a, 54b, which is preferably made of a flat, thermoplastic plastic film and formed in a blowing process in a spatial structure.

Figur 4 zeigt eine erfindungsgemäße Gebläseraumabdeckung 32 in perspektivischer Ansicht. Die Gebläseraumabdeckung 32 ist als annähernd quaderförmiger Schalenkörper ausgebildet. Senkrecht zu einer oberen Deckenwand 55 schließen sich ein in Figur 4 rechts dargestellter erster Seitenwandabschnitt 56 und ein in Figur 4 links dargestellter zweiter Seitenwandabschnitt 57, sowie ein hinterer Rückwandabschnitt 58 an. Der erste Seitenwandabschnitt 56, der zweite Seitenwandabschnitt 57 und der Rückwandabschnitt 58 sind an ihren Seitenkanten miteinander zu einer U-förmigen Seitenwand 59 der Gebläseraumabdeckung 32 verbunden. In die Deckenwand 55 ist die Anströmöffnung 34 integriert. An einem in Figur 4 vorne dargestelltem Ende der Deckenwand 55 ist der vorderer Wandabschnitt 29d des zweiten Kapselteils 30 mittels eines Verbindungssteges 59 angeformt. Der vordere Wandabschnitt 29d des zweiten Kapselteils 30 ist seitlich mit dem ersten Wandabschnitt 56 und dem zweiten Wandabschnitt 57 der Gebläseraumabdeckung 32 verbunden. Der vordere Wandabschnitt 29d ist halbkreisscheibenartig geformt und weist eine halbkreisförmige randoffene Freisparung 60 zur Aufnahme des zweiten Lagerelements 26 des Motor-/Gebläseaggregats 27 auf. Dem vorderen Wandabschnitt 29d gegenüberliegend ist der hintere vertikale Wandabschnitt 29a des zweiten Kapselteils 30 an die Gebläseraumabdeckung 32 angeformt. Zwischen dem der hinteren vertikalen Wandabschnitt 29a des zweiten Kapselteils 30 und dem hinteren Rückwandabschnitt 58 der Gebläseraumabdeckung 32 verläuft der Hauptströmungskanal 33 in Richtung der Anströmöffnung 34 in der Deckenwand 55. Zwischen den Wandabschnitte 29a und 29d sind zwei vertikale Seitenwandabschnitte 29b und 29 c an die Gebläseraumabdeckung 32 angeformt. Zwischen dem Seitenwandabschnitt 29c und dem ersten Seitenwandabschnitt 56 verläuft ein erster Nebenströmungskanal 61a. Zwischen dem Seitenwandabschnitt 29b und dem zweiten Seitenwandabschnitt 57 verläuft ein zweiter Nebenströmungskanal 61b. FIG. 4 shows a blower compartment cover 32 according to the invention in a perspective view. The fan cover 32 is formed as an approximately cuboid shell body. Perpendicular to an upper ceiling wall 55 close in FIG. 4 Right side shown first side wall portion 56 and a in FIG. 4 On the left side shown second side wall portion 57, and a rear rear wall portion 58 at. The first side wall portion 56, the second side wall portion 57 and the rear wall portion 58 are connected at their side edges to each other to a U-shaped side wall 59 of the fan cover 32. In the ceiling wall 55, the inflow opening 34 is integrated. At one in FIG. 4 front end shown the ceiling wall 55 of the front wall portion 29 d of the second capsule part 30 is integrally formed by means of a connecting web 59. The front wall portion 29 d of the second capsule part 30 is laterally connected to the first wall portion 56 and the second wall portion 57 of the fan cover 32. The front wall section 29d is semi-circular disk-shaped and has a semicircular edge-open cutout 60 for receiving the second bearing element 26 of the motor / fan unit 27. Opposite the front wall section 29d, the rear vertical wall section 29a of the second capsule section 30 is integrally formed on the fan compartment cover 32. Between the rear vertical wall portion 29 a of the second capsule part 30 and the rear rear wall portion 58 of the fan cover 32 the main flow channel 33 extends in the direction of the inflow opening 34 in the top wall 55. Between the wall sections 29a and 29d, two vertical side wall sections 29b and 29c are integrally formed on the blower compartment cover 32. Between the side wall portion 29c and the first side wall portion 56, a first bypass passage 61a extends. Between the side wall portion 29b and the second side wall portion 57, a second bypass passage 61b extends.

In Figur 5 ist der erste Nebenströmungskanal 61a und der zweite Nebenströmungskanal 61b in einem Querschnitt durch die Längsachse des erfindungsgemäßen Staubsaugers gezeigt. Es ist die Unterschale 2 mit den angeformten Wandabschnitten 22a und 22c des Gebläseraums 12 dargestellt. Innerhalb des Gebläseraums 12 sind die Wandabschnitte 15a und 15c des ersten Kapselteils 14 an die Bodenfläche 3 angeformt. Von den Wandabschnitt 22a und dem Wandabschnitt 15a ist der erste Nebenströmungskanal 61a begrenzt. Wie durch die Pfeile P8 angedeutet, strömt ein erster Nebenluftstrom im Nebenströmungskanal 61a nach oben, zwischen den Wandabschnitt 29c und den ersten Seitenwandabschnitt 56 der Gebläseraumabdeckung 32, und ein zweiter Nebenluftstrom strömt im Nebenströmungskanal 61b nach oben, zwischen den Wandabschnitt 29b und den zweiten Seitenwandabschnitt 57 der Gebläseraumabdeckung 32. An einer unteren Kante 62 der Seitenwandabschnitte 56 und 57, sowie des Rückwandabschnitts 58 (nicht dargestellt) ist eine nutförmige Dichtungsanordnung 63 angeformt. In die Nut greift eine obere umlaufende Kante 64 der Wandabschnitte 22a, 22b und 22c ein. Alternativ kann eine nicht dargestellte Dichtungsschnur in die Nut eingelegt sein. Die Dichtungsanordnung 63 verschließt eine Trennfuge zwischen der Gebläseraumabdeckung 32 und dem Gebläseraum 12. Zwischen dem ersten Kapselteil 14 und dem zweiten Kapselteil 30 ist eine weitere Dichtungsanordnung 65 vorgesehen. Die Dichtungsanordnung 65 ist als Labyrinthdichtung ausgebildet. Dazu überdecken die Wandabschnitte 15a, 15b und 15c des ersten Kapselteils 14 teilweise die Wandabschnitte 29a, 29b und 29c des zweiten Kapselteils 30.In FIG. 5 the first secondary flow channel 61a and the second secondary flow channel 61b are shown in a cross section through the longitudinal axis of the vacuum cleaner according to the invention. It is the lower shell 2 with the molded wall portions 22a and 22c of the fan chamber 12 is shown. Within the fan chamber 12, the wall portions 15 a and 15 c of the first capsule part 14 are integrally formed on the bottom surface 3. Of the wall portion 22a and the wall portion 15a, the first bypass passage 61a is defined. As indicated by the arrows P8, a first bleed air flow in the bypass passage 61a flows upward between the wall portion 29c and the first side wall portion 56 of the fan cover 32, and a second bleed air flow flows upward in the bypass passage 61b, between the wall portion 29b and the second side wall portion 57 the blower compartment cover 32. At a lower edge 62 of the side wall portions 56 and 57, and the rear wall portion 58 (not shown), a groove-shaped seal assembly 63 is formed. In the groove engages an upper peripheral edge 64 of the wall portions 22a, 22b and 22c. Alternatively, a sealing cord, not shown, may be inserted into the groove. The sealing arrangement 63 closes a parting line between the fan chamber cover 32 and the fan chamber 12. A further sealing arrangement 65 is provided between the first capsule part 14 and the second capsule part 30. The seal assembly 65 is formed as a labyrinth seal. For this purpose, the wall sections 15a, 15b and 15c of the first capsule part 14 partially cover the wall sections 29a, 29b and 29c of the second capsule part 30.

Die senkrecht nach oben strömenden Nebenluftströme entlang den Pfeilen P8 treten über Zuströmöffnungen 66 in den Hauptströmungskanal 33 ein. Dabei treffen die Nebenluftströme, wie durch die Pfeile P9 angedeutet, senkrecht auf die Hauptluftströme P7. Der in Figur 3 als von links nach rechts verlaufend dargestellter Pfeil P7 erscheint in Figur 5 als aus der Zeichnungsebene heraustretende Pfeile P7. Durch das senkrechte Aufeinandertreffen der Nebenluftströme P9 und der Hauptluftströme P7 wird die Luft verwirbelt und tritt, wie durch die Pfeile P10 angedeutet, in diffuser Strömung in die Anströmöffnung 34 ein. Oberhalb der Anströmöffnung 34 ist das Ausblasfilter 35 in eine an der Gebläseraumabdeckung 32 angeformte Halterung 67 (Figur 4) eingesetzt. Die Halterung weist einen umlaufenden Randabsatz 68 auf, an dem eine Dichtung 69 angeformt ist, auf der das Ausblasfilter 35 dichtend aufliegt. Wie in Figur 4 dargestellt ist an die Gebläseraumabdeckung 32 nicht nur die Halterung 67 sondern auch ein Kabellauf 70 einstückig angeformt.The secondary air streams flowing vertically upwards along the arrows P8 enter the main flow channel 33 via inflow openings 66. In this case, the secondary air flows, as indicated by the arrows P9, perpendicular to the main air flows P7. The in FIG. 3 as shown from left to right arrow P7 appears in FIG. 5 as emerging from the plane of the drawing arrows P7. By the vertical When the secondary air streams P9 and the main air streams P7 meet, the air is entangled and enters the inlet opening 34 in a diffuse flow, as indicated by the arrows P10. Above the inflow opening 34, the blow-out filter 35 is in a molded-on to the blower compartment cover 32 holder 67 (FIGS. FIG. 4 ) used. The holder has a peripheral edge shoulder 68, on which a seal 69 is integrally formed, on which the exhaust filter 35 rests sealingly. As in FIG. 4 shown is on the fan cover 32 not only the holder 67 but also a cable run 70 integrally formed.

Claims (9)

  1. Vacuum cleaner comprising a housing (1) and a exhaust opening (36) for an exhaust air flow, which is connected in terms of flow with an excess pressure side of a motor/fan unit (27) by way of a flow channel (21) which, for division of the exhaust air flow, is constructed to be branched into at least one first sub-channel (33) and second sub-channel (61) which are led together ahead of the exhaust opening (36), characterised in that the second sub-channel (61) forms at least one secondary flow channel (61a, 61b) opening into the first sub-channel (33), which forms a main flow channel, and the secondary flow channel (61a, 61b) is so connected with the main flow channel (33) that a secondary air flow fed to the main flow channel (33) by way of the secondary flow channel (61a, 61b) crosses the main air flow.
  2. Vacuum cleaner according to claim 1, characterised in that the main flow channel (33) is arranged to extend behind an end, which is opposite an induction opening (72), of the motor/fan unit (27).
  3. Vacuum cleaner according to claim 1 or 2, characterised in that at least two secondary flow channels (61a, 61b) arranged to extend at opposite sides of the motor/fan unit (27) are provided.
  4. Vacuum cleaner according to claim 3, characterised in that the at least two secondary flow channels (61a, 61b) have a rectangular cross-section and are arranged to extend substantially vertically.
  5. Vacuum cleaner according to claim 4, characterised in that each secondary flow channel (61a, 61b) is connected with the main flow channel (33) by way of at least one inflow opening (66).
  6. Vacuum cleaner according to claim 5, characterised in that the opening cross-section of the at least one inflow opening (66) is smaller than the flow cross-section of the respective secondary flow channel (61a, 61b).
  7. Vacuum cleaner according to any one of the preceding claims, characterised in that the at least one secondary flow channel (61a, 61b) and/or the main flow channel (33) is arranged to extend between a housing part of a fan housing (12) and a capsule part (14, 30) of an insulating capsule (71).
  8. Vacuum cleaner according to claim 7, characterised in that the housing part of the fan housing (12) and the capsule part (14, 30) of the insulating capsule (71) are of integral construction.
  9. Vacuum cleaner according to claim 7 or 8, characterised in that the housing part is a fan chamber cover (32).
EP04741398A 2003-08-11 2004-08-10 Vacuum cleaner with exhaust air flow channels Expired - Lifetime EP1656061B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10336828A DE10336828B4 (en) 2003-08-11 2003-08-11 Vacuum cleaner with exhaust air flow channels
PCT/EP2004/008952 WO2005016106A1 (en) 2003-08-11 2004-08-10 Vacuum cleaner with exhaust air flow channels

Publications (2)

Publication Number Publication Date
EP1656061A1 EP1656061A1 (en) 2006-05-17
EP1656061B1 true EP1656061B1 (en) 2011-11-16

Family

ID=34177439

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Application Number Title Priority Date Filing Date
EP04741398A Expired - Lifetime EP1656061B1 (en) 2003-08-11 2004-08-10 Vacuum cleaner with exhaust air flow channels

Country Status (7)

Country Link
EP (1) EP1656061B1 (en)
CN (1) CN100475118C (en)
AT (1) ATE533391T1 (en)
DE (1) DE10336828B4 (en)
ES (1) ES2374397T3 (en)
RU (1) RU2330597C2 (en)
WO (1) WO2005016106A1 (en)

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Publication number Priority date Publication date Assignee Title
US10307029B2 (en) 2016-03-21 2019-06-04 Dyson Technology Limited Vacuum cleaner having a filter assembly

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DE10148509B4 (en) * 2001-10-01 2008-01-24 BSH Bosch und Siemens Hausgeräte GmbH Canister
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DE102010001140B4 (en) * 2009-12-30 2012-03-15 BSH Bosch und Siemens Hausgeräte GmbH Vacuum cleaner with mesh guard
DE102011007212B4 (en) * 2011-04-12 2020-04-23 BSH Hausgeräte GmbH Vacuum cleaner with divided air flow channel
GB2514088B (en) * 2013-03-13 2016-05-11 Techtronic Floor Care Tech Ltd A source of suction for a vacuum cleaner
CN105996891B (en) * 2016-07-25 2018-06-29 江苏美的清洁电器股份有限公司 The host and dust catcher of dust catcher
CN112867422B (en) * 2018-10-19 2023-05-09 阿尔弗雷德·卡赫欧洲两合公司 Suction machine with acoustic horn

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Publication number Priority date Publication date Assignee Title
US10307029B2 (en) 2016-03-21 2019-06-04 Dyson Technology Limited Vacuum cleaner having a filter assembly

Also Published As

Publication number Publication date
DE10336828B4 (en) 2013-04-18
RU2330597C2 (en) 2008-08-10
EP1656061A1 (en) 2006-05-17
WO2005016106A1 (en) 2005-02-24
CN100475118C (en) 2009-04-08
DE10336828A1 (en) 2005-03-10
ES2374397T3 (en) 2012-02-16
CN1835706A (en) 2006-09-20
RU2006103276A (en) 2006-07-27
ATE533391T1 (en) 2011-12-15

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