EP1161915A2 - Air flow channel - Google Patents

Air flow channel Download PDF

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Publication number
EP1161915A2
EP1161915A2 EP01107221A EP01107221A EP1161915A2 EP 1161915 A2 EP1161915 A2 EP 1161915A2 EP 01107221 A EP01107221 A EP 01107221A EP 01107221 A EP01107221 A EP 01107221A EP 1161915 A2 EP1161915 A2 EP 1161915A2
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EP
European Patent Office
Prior art keywords
air flow
flow channel
structuring
suction
air
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01107221A
Other languages
German (de)
French (fr)
Other versions
EP1161915A3 (en
EP1161915B1 (en
Inventor
Ralf Dr. Sauer
Ernst Uwe Schiffer
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.)
Vorwerk and Co Interholding GmbH
Original Assignee
Vorwerk and Co Interholding GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10023408A external-priority patent/DE10023408A1/en
Application filed by Vorwerk and Co Interholding GmbH filed Critical Vorwerk and Co Interholding GmbH
Priority to SI200130666T priority Critical patent/SI1161915T1/en
Publication of EP1161915A2 publication Critical patent/EP1161915A2/en
Publication of EP1161915A3 publication Critical patent/EP1161915A3/en
Application granted granted Critical
Publication of EP1161915B1 publication Critical patent/EP1161915B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/02—Influencing flow of fluids in pipes or conduits
    • F15D1/06—Influencing flow of fluids in pipes or conduits by influencing the boundary layer
    • F15D1/065—Whereby an element is dispersed in a pipe over the whole length or whereby several elements are regularly distributed in a pipe
    • 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
    • A47L9/0072—Mechanical means for controlling the suction or for effecting pulsating action
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/0081—Means for exhaust-air diffusion; Means for sound or vibration damping
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/02—Nozzles
    • 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
    • A47L9/24—Hoses or pipes; Hose or pipe couplings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

An air flow channel (4) of domestic suction or blowing apparatus, especially a vacuum cleaner, has a structuring of the inner wall of the air flow channel leading to a micro-turbulence. The structuring is designed to be scaly. The structuring is designed to be groove-shaped and unordered. The structuring is designed on the largest part of the inner wall of the air flow channel from a suction air inlet to the suction fan inlet. The structuring is designed also on the largest part of the inner wall of the air flow channel from the fan outlet to a fan air outlet. The structuring is designed in the 100th to 10th of a millimetre range.

Description

Die Erfindung betrifft einen Luftströmungskanal eines Haushaltssauggeräts oder -blasgeräts, insbesondere eines Staubsauggeräts.The invention relates to an air flow channel Household suction device or blower, in particular of a vacuum cleaner.

Zur Erzielung möglichst hoher Luftleistung bspw. an einer Staubsaugerdüse ist es ohne Erhöhung der Aufnahmeleistung des Motors üblich, Strömungswege hinsichtlich Durchmesser, Glätte, Umlenkung, Querschnitte und Querschnittsänderungen zu optimieren. Die mediumberührte Seite (Innenseite) von Saug- und Blaskanälen wird allgemein auf maximal erreichbare Glätte und Minimierung von Versatz, Totwassergebieten und Verwirbelungen eingestellt. Eine Luftleistungssteigerung durch Erhöhung der Aufnahmeleistung des Blas- bzw. Saugmotors führt zu einer erhöhten Geräuschemission. Zudem stellt sich ein schlechterer Wirkungsgrad ein, was zu einer Verkürzung der Lebensdauer des Motors führt. Zudem ergibt sich hieraus eine verschlechterte Energiebilanz und darüber hinaus eine erhöhte Abrasion in dem Luftströmungskanal. Da Saug- und Blaskanäle an die Gestaltung innerer und äußerer Funktionselemente, wie Engstellen, Kurven, normierte Schnittstellen usw. anzupassen sind und andererseits herstellungsgünstig ausgebildet sein sollen, werden glatte, leicht entformbare Oberflächen bevorzugt. Derartige Oberflächen in Kombination mit sekundären Erfordernissen führen zum einen zu dem Nachteil, dass eine Abfolge von Zonen verschiedener Strömungsgeschwindigkeiten zu Leistungsverlusten führt. Zudem wird eine Ablagerung von Medien in Totwassergebieten bzw. entformungsbedingten Versatz-Grat-Zonen beobachtet. Darüber hinaus ergibt sich hierbei eine erhöhte Schallemission. Weiter ergeben sich Nachteile durch Erosion und/oder Kavitation in den Prallgebieten. To achieve the highest possible air performance, for example a vacuum cleaner nozzle it is without increasing the absorption capacity the engine's usual, flow paths regarding Diameter, smoothness, deflection, cross sections and changes in cross section to optimize. The wetted Side (inside) of suction and blowing channels becomes general for maximum smoothness and minimization of Offset, dead water areas and turbulence set. An air performance increase through increase the power of the blowing or suction motor leads to an increased noise emission. It also arises poorer efficiency, resulting in a shortening the life of the engine. It also results from this a deteriorated energy balance and above also increased abrasion in the air flow channel. Because suction and blowing channels match the design of the interior and external functional elements such as constrictions, curves, standardized interfaces etc. must be adapted and on the other hand should be designed to be inexpensive to manufacture, smooth, easily removable surfaces are preferred. Such surfaces in combination with secondary ones On the one hand, requirements lead to the disadvantage that a sequence of zones of different flow velocities leads to loss of performance. In addition becomes a deposition of media in dead water areas or demolding-related burr zones observed. In addition, there is an increased Noise emission. There are also disadvantages Erosion and / or cavitation in the impact areas.

Im Hinblick auf den zuvor beschriebenen Stand der Technik wird eine technische Problematik der Erfindung darin gesehen, einen Luftströmungskanal der in Rede stehenden Art derart in vorteilhafter Weise weiterzubilden, dass sich eine Erhöhung des Wirkungsgrades des Haushaltssauggerätes oder -blasgerätes einstellt.In view of the prior art described above becomes a technical problem of the invention seen in it an airflow channel in the speech to further develop the standing type in an advantageous manner, that an increase in the efficiency of the Household suction device or blower.

Diese Aufgabe ist zunächst und im wesentlichen durch den Gegenstand des Anspruches 1 durch eine zu einer Mikroverwirbelung führende Strukturierung der Innenwandung des Luftströmungskanales gelöst. Zufolge dieser Ausgestaltung ist ein erhöhter Wirkungsgrad des Haushaltssauggerätes erzielt. Desweiteren wird die Schallemission verringert sowie die Einflüsse von fertigungsbedingten Ungenauigkeiten reduziert. Ablagerungen sowie Abrasion werden verringert. Als Folge der erfindungsgemäßen Strukturierung der Innenwandung des Luftströmungskanales läßt sich eine gleich hohe Luftleistung an der Saug- oder Blasdüse bei verringerter Aufnahmeleistung von bis zu 20 % erzielen. Die Innenwandung des Luftströmungskanales weist erfindungsgemäß eine Strukturierung auf, die die Mikroverwirbelung begünstigt und Makroverwirbelungen bzw. Totwassergebiete unterdrückt. Die Strukturierung kann naturentlehnt oder frei konstruiert sein und mittels Fotografierens, Ätzens, Strahlens, Prägens, Kaschierens, Lackierens oder mittels Rapid-Prototyping direkt erzeugt werden, so dass die Strukturierung beliebig vervielfältigbar ist. Sie kann hierbei auf Werkzeuge für formgebende Verfahren, wie z. B. Spritzgießen, Prägen oder Sintern übertragen werden. Darüber hinaus ist erfindungsgemäß auch vorgesehen, dass ein üblicher, serienmäßiger Luftströmungskanal mit einer, eine Mikroverwirbelung herbeiführende Kunststoffolie beklebt ist. In einer Weiterbildung des Erfindungsgegenstandes ist vorgesehen, dass die Strukturierung schuppenartig ausgebildet ist. So kann die Strukturierung annähernd die Oberfläche der Haut von Grossfischen darstellen, wobei weiter diese Strukturierung partiell oder auch vollflächig vorgesehen sein kann. Weiter ist auch denkbar, dass die Strukturierung rillenartig ausgebildet ist. Zudem ist auch eine ungeordnet ausgebildete Strukturierung denkbar. Weiter wird vorgeschlagen, dass die Strukturierung auf dem größten Teil der Innenwandung des Luftströmungskanales von einem Sauglufteinlass bis zum Saugluftgebläseeinlass ausgebildet ist. Entsprechend wird auch vorgeschlagen, dass die Strukturierung auf dem größten Teil der Innenwandung des Luftströmungskanales von einem Blasluftgebläseauslass bis zu einem Blasluftauslass ausgebildet ist. Auch ist erfindungsgemäß vorgesehen, dass die Strukturierung im Hundertstel- bis Zehntel-Millimeter-Bereich ausgebildet ist. Die erfindungsgemäße Strukturierung führt zu einer Anhebung des Wirkungsgrades und damit der Luftleistung, zur Verringerung der Schallemission sowie zur Verringerung von Ablagerung und Verschleiß durch transportierte Medien, dies ohne Anhebung der Motorleistung. Die Summe der Vorteile kumuliert zu erhöhter Umweltverträglichkeit des Gerätes.This task is initially and essentially through the subject of claim 1 by one to one Micro-swirling structuring of the inner wall of the air flow channel released. As a result of this Design is an increased efficiency of the household suction device achieved. Furthermore, the noise emission reduced as well as the influences of manufacturing-related Reduced inaccuracies. Deposits and abrasion are reduced. As a result of the invention Structuring the inner wall of the air flow channel air performance is equally high on the suction or blowing nozzle with reduced absorption capacity of up to 20%. The inner wall of the air flow channel has according to the invention a structuring on that the micro-vortex favors and macro turbulence or dead water areas suppressed. The structuring can be borrowed from nature or be freely constructed and by means of photography, Etching, blasting, embossing, laminating, painting or generated directly using rapid prototyping, so that the structuring can be reproduced as required is. You can use tools for shaping Methods such as B. injection molding, embossing or sintering be transmitted. In addition, the invention also provided that a common, standard air flow channel with one that induces micro-swirling Plastic film is glued. In a training course of the subject matter of the invention it is provided that the structure is scaled. So the structuring can approximate the surface of the Represent the skin of large fish, with this further Structuring provided partially or over the entire area can be. It is also conceivable that the structuring is formed like a groove. It is also a disorderly structured structuring is conceivable. It is further proposed that the structuring most of the inner wall of the air flow channel from a suction air inlet to a suction air blower inlet is trained. Accordingly, it is also proposed that structuring on the most part the inner wall of the air flow channel from one Blower air blower outlet up to a blower air outlet is trained. It is also provided according to the invention that the structuring in the hundredth to tenths of a millimeter range is trained. The invention Structuring leads to an increase in efficiency and thus the air performance, to reduce the Noise emission and to reduce deposits and wear from transported media, without this Engine power increase. The sum of the advantages accumulates to increased environmental compatibility of the device.

Nachstehend ist die Erfindung anhand der beigefügten Zeichnung, welche lediglich Ausführungsbeispiele darstellt, näher erläutert. Es zeigt:

Fig. 1
ein Haushaltssauggerät in Form eines Staubsauggeräts in perspektivischer Darstellung;
Fig. 2
eine schematische Teildarstellung eines, die erfindungsgemäße, innenwandungsseitige Strukturierung aufweisenden Luftströmungskanals;
Fig. 3
eine schematische Schnittdarstellung gemäß der Linie III-III in Fig. 2;
Fig. 4
eine Herausvergrößerung des Bereiches IV in Fig. 2;
Fig. 5
eine mikroskopische Vergrößerung des Bereiches V in Fig. 4;
Fig. 6
eine Ansicht gegen das, einen erfindungsgemäßen Luftströmungskanal aufweisenden Motor-/Filter-Gehäuse des Staubsauggerätes gemäß Fig. 1;
Fig. 7
eine perspektivische Darstellung einer Saugdüse des Staubsauggerätes;
Fig. 8
eine partiell geschnittene, perspektivische Prinzipdarstellung einer Saugdüse mit einem, die erfindungsgemäße Strukturierung aufweisendem Luftströmungskanal.
The invention is explained in more detail below with reference to the accompanying drawing, which only shows exemplary embodiments. It shows:
Fig. 1
a household suction device in the form of a vacuum cleaner in a perspective view;
Fig. 2
a partial schematic representation of an air flow channel having the inventive structuring on the inner wall side;
Fig. 3
is a schematic sectional view along the line III-III in Fig. 2;
Fig. 4
an enlargement of area IV in Fig. 2;
Fig. 5
a microscopic magnification of the area V in Fig. 4;
Fig. 6
a view against the motor / filter housing of the vacuum cleaner according to FIG. 1, which has an air flow channel according to the invention;
Fig. 7
a perspective view of a suction nozzle of the vacuum cleaner;
Fig. 8
a partially sectioned, perspective illustration of a suction nozzle with an air flow channel having the structuring according to the invention.

Dargestellt und beschrieben ist zunächst mit Bezug zu Fig. 1 ein Haushaltsgerät in Form eines Staubsauggerätes 1, mit einem Saug-/Gebläsemotor 2 und einer zugeordneten Saugdüse 3.Is shown and described initially with reference to Fig. 1 is a household appliance in the form of a vacuum cleaner 1, with a suction / blower motor 2 and an associated Suction nozzle 3.

Der in der Saugdüse 3 ausgebildete Sauglufteinlaß ist mit dem Bezugszeichen 3' versehen. Von diesem ausgehend erstreckt sich ein Luftströmungskanal 4 -bei Anordnung der Saugdüse 3 an dem Staubsauggerät 1- im wesentlichen bis hin zu einem Sauglufteinlaß 2' des Saug-/Gebläsemotors 2. The suction air inlet formed in the suction nozzle 3 is provided with the reference symbol 3 '. Starting from this extends an air flow channel 4 - when arranged the suction nozzle 3 on the vacuum cleaner 1- essentially to a suction air inlet 2 'of the suction / blower motor 2nd

Sowohl das Staubsauggerät 1 als auch die Saugdüse 3 verfügen jeweils über einen Luftströmungskanal 4, durch welchen das angesaugte Medium, einen an dem Motorgehäuse 5 angedockten, nicht dargestellten Filter durchströmend geleitet wird.Both the vacuum cleaner 1 and the suction nozzle 3 each have an air flow channel 4, through which the aspirated medium, one on the motor housing 5 docked filter, not shown, flowing through is directed.

In Fig. 2 ist ein Abschnitt eines Luftströmungskanales 4 in einer schematischen Schnittdarstellung gezeigt. Erfindungsgemäß ist die Innenwandung 6 des Luftströmungskanales 4 mit einer Strukturierung 7 versehen, welche im Saug- oder auch Blasbetrieb zu einer Mikroverwirbelung des vorbeigeführten Mediums führt. Diese Strukturierung kann mittels Fotografierens, Ätzens, Strahlens, Prägens, Kaschierens oder Lackierens oder mittels Rapid-Prototyping direkt erzeugt sein. Alternativ kann auch eine mit einer Strukturierung versehene Kunststofffolie auf der Innenwandung 6 des Luftströmungskanales aufgebracht sein.2 is a portion of an air flow channel 4 shown in a schematic sectional view. According to the invention, the inner wall 6 of the air flow channel 4 provided with a structure 7, which in suction or blowing operation to a micro swirl of the medium being passed. This structuring can be photographed, etched, blasted, Embossing, laminating or painting or by means of Rapid prototyping can be generated directly. Alternatively, you can also a structured plastic film on the inner wall 6 of the air flow channel be upset.

Durch die so geschaffene Oberfläche der Innenwandung 6 des Luftströmungskanales 4 wird eine Mikroverwirbelung begünstigt, jedoch eine Makroverwirbelung bzw. Totwassergebiete unterdrückt, so daß bei gleicher Aufnahmeleistung des Saug-/Gebläsemotors 2 eine erhöhte Luftleistung bzw. bei gleich hoher Luftleistung eine verringerte Aufnahmeleistung erzielt ist. Zufolge der erfindungsgemäßen Ausgestaltung wird durch die Mikroverwirbelung im Bereich der Innenwandungsoberfläche ein Luftpolster geschaffen, welches ein ungestörtes Strömen des Mediums 8 in dem Luftströmungskanal 4 unterstützt (vergl. Fig. 3).The surface of the inner wall 6 thus created of the air flow channel 4 becomes a micro swirl favored, however, a macro vortex or dead water areas suppressed so that with the same power consumption of the suction / blower motor 2 an increased air output or a reduced one with the same high air output Recording performance is achieved. According to the invention Shaping is through the micro-swirling an air cushion in the area of the inner wall surface created, which an undisturbed flow of Medium 8 supported in the air flow channel 4 (see Fig. 3).

Wie in Fig. 4 dargestellt, ist in dem Ausführungsbeispiel die Strukturierung 7 schuppenartig ausgebildet mit einer in Strömungsrichtung r weisenden Ausrichtung der einzelnen Schuppen. Diese Schuppen weisen weiter eine Unterstrukturierung 7' gemäß Fig. 5 auf. Wie zu erkennen, kann diese Unterstrukturierung 7' durch kreisabschnittförmige, gegebenenfalls ineinandergreifende Rillen gebildet sein.As shown in Fig. 4, is in the embodiment the structure 7 is formed like a scale with an orientation pointing in the flow direction r of the individual scales. These scales point further a substructuring 7 'according to FIG. 5. How to can recognize this substructuring 7 'by circular segment-shaped, if necessary, interlocking Grooves are formed.

Die Fig. 6 bis 8 zeigen verschiedene Geräteabschnitte bzw. Gerätezusatzteile mit erfindungsgemäßen, eine Strukturierung 7 aufweisenden Strömungskanälen 4.6 to 8 show different device sections or device accessories with the invention, a Structuring 7 having flow channels 4.

Alle offenbarten Merkmale sind (für sich) erfindungswesentlich. In die Offenbarung der Anmeldung wird hiermit auch der Offenbarungsinhalt der zugehörigen/beigefügten Prioritätsunterlagen (Abschrift der Voranmeldung) vollinhaltlich mit einbezogen, auch zu dem Zweck, Merkmale dieser Unterlagen in Ansprüche vorliegender Anmeldung mit aufzunehmen.All of the features disclosed are (in themselves) essential to the invention. In the disclosure of the registration is hereby also the disclosure content of the associated / attached Priority documents (copy of pre-registration) fully included, also for the purpose of characteristics of these documents in claims of the present application to include.

Claims (7)

Luftströmungskanal (4) eines Haushaltssauggerätes oder -blasgerätes, insbesondere eines Staubsauggerätes (1), gekennzeichnet durch eine zu einer Mikroverwirbelung führende Strukturierung der Innenwandung des Luftströmungskanales (4).Air flow channel (4) of a household suction device or blower, in particular a vacuum cleaner (1), characterized by a structuring of the inner wall of the air flow channel (4) which leads to micro-swirling. Luftströmungskanal nach Anspruch 1 oder insbesondere danach, dadurch gekennzeichnet, dass die Strukturierung schuppenartig ausgebildet ist.Air flow channel according to claim 1 or in particular according thereto, characterized in that the structuring is formed like a scale. Luftströmungskanal nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass die Strukturierung rillenartig ausgebildet ist.Air flow channel according to one or more of the preceding claims or in particular according thereto, characterized in that the structuring is groove-like. Luftströmungskanal nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass die Strukturierung ungeordnet ausgebildet ist.Air flow channel according to one or more of the preceding claims or in particular according thereto, characterized in that the structuring is disordered. Luftströmungskanal nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass die Strukturierung auf dem größten Teil der Innenwandung (6) des Luftströmungskanales (4) von einem Sauglufteinlass (3') bis zum Saugluftgebläseeinlass (2') ausgebildet ist.Air flow duct according to one or more of the preceding claims or in particular according thereto, characterized in that the structuring is formed on the major part of the inner wall (6) of the air flow duct (4) from a suction air inlet (3 ') to the suction air blower inlet (2'). Luftströmungskanal nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass die Strukturierung auf dem größten Teil der Innenwandung (6) des Luftströmungskanales (4) von einem Blasluftgebläseauslass bis zu einem Blasluftauslass ausgebildet ist. Air flow channel according to one or more of the preceding claims or in particular according thereto, characterized in that the structuring is formed on the major part of the inner wall (6) of the air flow channel (4) from a blown air blower outlet to a blown air outlet. Luftströmungskanal nach einem oder mehreren der vorhergehenden Ansprüche oder insbesondere danach, dadurch gekennzeichnet, dass die Strukturierung im Hundertstel- bis Zehntel-Millimeter-Bereich ausgebildet ist.Air flow channel according to one or more of the preceding claims or in particular according thereto, characterized in that the structuring is in the hundredth to tenths of a millimeter range.
EP01107221A 2000-04-18 2001-03-23 Air flow channel Expired - Lifetime EP1161915B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI200130666T SI1161915T1 (en) 2000-04-18 2001-03-23 Air flow channel

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10019125 2000-04-18
DE10019125 2000-04-18
DE10023408 2000-05-12
DE10023408A DE10023408A1 (en) 2000-04-18 2000-05-12 Air flow channel of domestic suction or blowing apparatus, especially vacuum cleaner has structuring of inner wall of air flow channel leading to micro-turbulence designed to be scaly, groove-shaped and unordered.

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EP1161915A2 true EP1161915A2 (en) 2001-12-12
EP1161915A3 EP1161915A3 (en) 2005-04-20
EP1161915B1 EP1161915B1 (en) 2006-10-04

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EP01107221A Expired - Lifetime EP1161915B1 (en) 2000-04-18 2001-03-23 Air flow channel

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AT (1) ATE341268T1 (en)
DE (1) DE50111125D1 (en)
ES (1) ES2270913T3 (en)

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CN106949099A (en) * 2017-04-28 2017-07-14 苏州市海朋电子商务有限公司 Dust catcher motor air pump

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US20050081321A1 (en) 2003-10-15 2005-04-21 Milligan Michael A. Hand-held cordless vacuum cleaner
DE602006012794D1 (en) 2006-01-27 2010-04-22 Black & Decker Inc Filter cleaning mechanism of vacuum cleaner

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EP0453163A1 (en) * 1990-04-18 1991-10-23 Hitachi, Ltd. Vacuum cleaner
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US5953787A (en) * 1996-09-10 1999-09-21 Kwangiu Electronics Co., Ltd. Suction globe of a vacuum cleaner
DE19836873A1 (en) * 1998-06-24 1999-12-30 Montaplast Gmbh Guide structure for the air intake or air/fuel mixture flow at a motor

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR685301A (en) * 1929-11-23 1930-07-09 Stepped inner surface pipe
DE2615507A1 (en) * 1976-04-09 1977-10-20 Mauz & Pfeiffer Progress VACUUM CLEANERS, IN PARTICULAR ELECTRICALLY POWERED HOUSEHOLD VACUUM CLEANERS
EP0453163A1 (en) * 1990-04-18 1991-10-23 Hitachi, Ltd. Vacuum cleaner
US5067584A (en) * 1990-04-25 1991-11-26 Williams William H Low cost replaceable type sound dampening unit for vacuum cleaning machine
US5953787A (en) * 1996-09-10 1999-09-21 Kwangiu Electronics Co., Ltd. Suction globe of a vacuum cleaner
DE19836873A1 (en) * 1998-06-24 1999-12-30 Montaplast Gmbh Guide structure for the air intake or air/fuel mixture flow at a motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106949099A (en) * 2017-04-28 2017-07-14 苏州市海朋电子商务有限公司 Dust catcher motor air pump
CN106949099B (en) * 2017-04-28 2019-05-10 苏州市海朋电子商务有限公司 Dust catcher motor air pump

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ATE341268T1 (en) 2006-10-15
ES2270913T3 (en) 2007-04-16
EP1161915A3 (en) 2005-04-20
EP1161915B1 (en) 2006-10-04
DE50111125D1 (en) 2006-11-16

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