EP0184113B1 - Vacuum cleaner - Google Patents

Vacuum cleaner Download PDF

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Publication number
EP0184113B1
EP0184113B1 EP85114980A EP85114980A EP0184113B1 EP 0184113 B1 EP0184113 B1 EP 0184113B1 EP 85114980 A EP85114980 A EP 85114980A EP 85114980 A EP85114980 A EP 85114980A EP 0184113 B1 EP0184113 B1 EP 0184113B1
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EP
European Patent Office
Prior art keywords
vacuum cleaner
air
filter
shroud
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
EP85114980A
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German (de)
French (fr)
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EP0184113A2 (en
EP0184113A3 (en
Inventor
Gernot Jacob
Leon Radom
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Progress Elektrogeraete GmbH
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Progress Elektrogeraete GmbH
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Priority to AT85114980T priority Critical patent/ATE55687T1/en
Publication of EP0184113A2 publication Critical patent/EP0184113A2/en
Publication of EP0184113A3 publication Critical patent/EP0184113A3/en
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Publication of EP0184113B1 publication Critical patent/EP0184113B1/en
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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
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • A47L9/12—Dry filters
    • A47L9/122—Dry filters flat
    • 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.
  • the air escaping from the vacuum cleaner housing causes some problems.
  • the air drawn in by the blower which carries a considerable amount of dust when the vacuum cleaner is actuated, is normally passed completely through the dust bag, in which dust particles of a certain size are retained, but contains it through the dust bag into the engine compartment flowing air and then exiting the vacuum cleaner housing contains a considerable amount of tiny particles that can have harmful effects on people. This is particularly the case when, in the known vacuum cleaners, the air usually escapes at a considerable pressure from closely spaced air slots, which causes additional dust swirling.
  • a vacuum cleaner is known in which a cap provided with a large number of air outlet openings is placed over the motor, so that the air exits into the rear housing space under expansion.
  • a filter arranged over the entire cross section of the vacuum cleaner housing, through which the air passes in the direction of the air outlet openings located on the rear of the housing. It is particularly disadvantageous that the expansion of the air has largely taken place before the filter, so that even slight contamination should lead to a reduction in the suction power. For this reason, the filter was also arranged over the entire cross-section of the housing, which makes the filter extremely expensive. In addition, the filter was arranged at a point where the replacement of the filter is associated with considerable difficulties for an operator.
  • DE-OS 29 45 176 describes a vacuum cleaner in which the space located behind the motor fan unit is divided so that the air is deflected several times on its way from the motor fan unit to the air outlet openings arranged on the bottom of the housing. After the first deflection, the air is completely expanded, passes through air outlet openings in the engine blower compartment, enters a space located at the bottom of the housing and passes through a filter before being released into the environment. In addition to the fact that the air has expanded completely before it passes the filter, the filter fills the entire floor area, so that it must be unusually large and therefore expensive. The location of the attachment is associated with the same replacement difficulties for the operator.
  • the object of the invention is to improve a vacuum cleaner according to the preamble of claim 1 such that at the same time an optimal filtering of particles from the air escaping into the environment is ensured in a cost-effective manner.
  • the motor is enclosed by an airtight hood attached to the blower, which has an air outlet opening and otherwise encloses the motor in an airtight manner.
  • an additional closed space is formed within the engine compartment, into which the blower conveys the intake air.
  • the sucked-in air emerges from this hood through air outlet openings provided for this purpose, as a result of which it enters the intermediate space between the vacuum cleaner housing and the hood.
  • a circumferential frame comprising the air outlet openings is fitted, into which an air filter with an airtight connection can be inserted and arranged in such a way that the air flowing through the air outlet openings flows through it.
  • the escaping air is thus practically freed from any pollutants, so that after it emerges from the vacuum cleaner it cannot have any detrimental effects on the environment.
  • the air outlet openings can be arranged close to each other, so that the air can be passed through a relatively small air filter without this having an adverse effect on the environment of the vacuum cleaner, as the concentrated outflow from the hood and at the Outlet cleaned air does not leave the vacuum cleaner with the relatively high pressure, but first enters the space between the vacuum cleaner housing and the hood. In this intermediate room, the cleaned air is first distributed and calmed down.
  • the filter is enclosed in a cassette frame, which makes it easier to handle.
  • a cassette frame On the outside of the hood there is a circumferential frame surrounding the air outlet openings, into which the filter cassette frame with an airtight connection can be inserted.
  • the frame is expediently formed on one side of the hood, the filter being insertable vertically upwards from the underside of the housing, while in the case of a floor vacuum cleaner Frame can be formed on the underside of the hood and the filter is inserted horizontally.
  • the filter is expediently supported in the frame by strips, so that it is not bent by the air flowing through it with considerable pressure, which could otherwise lead to its damage.
  • the filter is expediently a fine filter, and a handle is formed on the cassette frame, with which the insertion and removal of the filter can be carried out particularly easily.
  • the air outlet openings of the vacuum cleaner housing are expediently formed in such a large number distributed over considerable areas of the vacuum cleaner housing that the air emerges from the vacuum cleaner housing at a low speed and with a wide distribution.
  • the air emerging from the vacuum cleaner housing with low pressure and good distribution is practically imperceptible even in the immediate vicinity of the vacuum cleaner and cannot cause any annoying dust turbulence.
  • a shut-off device is formed in the hood wall, which is opened at a predetermined excess pressure in the hood, so that the sucked-in air can flow out of the hood. Since the user of a vacuum cleaner is not always informed about the condition of the filter through which the air has to pass if it wants to leave the vacuum cleaner housing or the hood, it can easily happen that this filter is not replaced in time. With an increasingly clogged filter, however, the pressure in the hood adjoining the blower increases, as a result of which the suction power of the vacuum cleaner is increasingly reduced. Finally, when the filter is completely clogged, the blower can no longer suck air into the hood, so that the vacuum cleaner can no longer perform its function in this state.
  • a user who does not pay attention to the filter in the vacuum cleaner can then get the impression that the entire device is defective.
  • This problem is solved by the arrangement of a shut-off device in the hood wall, which is opened at a predetermined pressure as a result of a filter which has been clogged to a certain degree, so that the sucked-in air can flow out of the hood.
  • the emerging air is not cleaned, but the functionality of the vacuum cleaner is retained.
  • the shut-off device is expediently a flap formed in the hood wall. This flap disengages at a certain overpressure and can be closed again by the operator, so that all the air is cleaned again after the filter has been replaced.
  • the design of the shut-off device as a flap is particularly simple and inexpensive.
  • the opening of the flap is advantageously indicated optically, electrically or acoustically.
  • the flap can be painted in a signal color and arranged so that its open state is visible through air outlet openings in the vacuum cleaner housing. This signal then gives the operator of the vacuum cleaner the hint that the filter must be changed.
  • an electrical signal can also be provided, for example in the form of an illuminated lamp, or an acoustic signal which is generated, for example, by the air escaping through the opened flap in the form of a whistle.
  • the display of the opening of the flap can reliably prevent a user familiar with the vacuum cleaner from remaining uninformed about the inoperable state of the filter.
  • a bearing ring for the blower is integrally formed on the hood, which is connected to the hood via webs.
  • the hood expediently consists of a material with elastomeric components.
  • the vacuum cleaner housing can be at least partially perforated.
  • the engine compartment of a handheld vacuum cleaner is shown.
  • the engine compartment is enclosed by the rear part of the vacuum cleaner housing 1 and contains in its end section facing the (not shown) front dust compartment a blower 2 which draws air through the dust compartment and into the engine compartment.
  • the motor 3, which drives the fan, is arranged behind the fan 2.
  • the motor 3 is enclosed in a hood 4 which connects to the blower in an airtight manner. This creates a closed space containing the motor at the rear of the blower 2, from which the air can only escape at outlet openings provided for this purpose.
  • the hood made of an elastomeric plastic also serves as storage for the engine so that an additional bearing ring in the rear area of the engine is not required.
  • webs 5 are formed, which are connected to a bearing ring 6 for the blower 2, the bearing ring 6, the webs 5 and the hood 4 being produced in one piece.
  • the hood 4 has through holes 7 in its rear upper region, through which the connecting cables 8 are passed such that the through holes are hermetically sealed.
  • a frame 9 is formed on the outside of one side of the hood 4, which for.
  • the filter 10 is inserted into the frame 9 from the bottom of the vacuum cleaner housing 1 by means of a handle 11 with which the filter is provided.
  • the filter 10 is supported by webs 12 so that it is not bent and damaged by the air flowing out at high pressure through air outlet openings 13 in the wall of the hood 4.
  • the air flowing out through the air outlet openings 13 must inevitably flow through the filter 10 in order to be able to enter the space 14 between the vacuum cleaner housing 1 and the hood 4, where the air flowing out at high speed is distributed and calms down.
  • a flap 16 is formed which, when the back pressure in the hood 4 exceeds a certain value, is opened by this internal pressure. This prevents the vacuum cleaner from becoming inoperable by an approximately clogged filter 10, since in this case the air sucked into the engine compartment by the blower 2 can leave the hood through the opening opened by the opened flap.
  • Fig. 4 the rear part of the engine compartment of a cylinder vacuum cleaner is shown.
  • the frame 9 is formed on the underside of the hood 4, where it comprises the openings 13 in the hood wall.
  • the filter 10 is inserted horizontally from the rear of the vacuum cleaner housing 1 into the frame 9.

Abstract

The motor 3 of the vacuum cleaner is surrounded by the elastomeric shroud 4, which is air-tightly joined to the blower 2. The blower 2 moves the drawn in air into the space defined by the shroud, which the air can only leave through the air outlet ports 13 formed in the wall of the shroud. Behind the air outlet ports 13 there is a filter 10, which cleans the air coming from the shroud. The air passes into the space between the shroud and the vacuum cleaner housing, where it is distributed and comes to rest. It passes through numerous air outlet ports 15 in the vacuum cleaner housing at a low speed.

Description

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

Bei den herkömmlichen Staubsaugern verursacht die aus dem Staubsaugergehäuse austretende Luft einige Probleme. Zwar wird die von dem Gebläse angesaugte Luft, die bei Betätigung des Staubsaugers beträchtliche Mengen Staub mit sich führt, normalerweise vollständig durch den Staubbeutel hindurchgeleitet, in dem Staubpartikel, die eine bestimmte Größe überschreiten, zurückgehalten werden, jedoch enthält die durch den Staubbeutel in den Motorraum strömende und anschließend aus dem Staubsaugergehäuse austretende Luft noch eine beträchtliche Menge kleinster partikel, die auf Menschen schädliche Einflüsse ausüben können. Dies ist insbesondere dann der Fall, wenn bei den bekannten Staubsaugern üblicherweise die Luft mit einem beträchtlichen Druck aus dicht beieinander angeordneten Luftschlitzen austritt, wodurch eine zusätzliche Staubverwirbelung hervorgerufen wird.With conventional vacuum cleaners, the air escaping from the vacuum cleaner housing causes some problems. Although the air drawn in by the blower, which carries a considerable amount of dust when the vacuum cleaner is actuated, is normally passed completely through the dust bag, in which dust particles of a certain size are retained, but contains it through the dust bag into the engine compartment flowing air and then exiting the vacuum cleaner housing contains a considerable amount of tiny particles that can have harmful effects on people. This is particularly the case when, in the known vacuum cleaners, the air usually escapes at a considerable pressure from closely spaced air slots, which causes additional dust swirling.

Aus der US-PS 20 36 694 ist ein Staubsauger bekannt, bei welchem eine mit einer großen Anzahl von Luftaustrittsöffnungen versehene Kappe über den Motor gesetzt ist, so daß die Luft unter Expansion in den hinteren Gehäuseraum austritt. Dort ist ein über den gesamten Querschnitt des Staubsaugergehäuses angeordneter Filter vorgesehen, durch welchen die Luft in Richtung der an der Gehäuserückseite befindlichen Luftaustrittsöffnungen hindurchtritt. Von besonderem Nachteil ist dabei, daß die Expansion der Luft bereits vor dem Filter weitestgehend stattgefunden hat, so daß bereits geringe Verschmutzung zur Verringerung der Saugleistung führen dürfte. Weiterhin wurde aus diesem Grunde der Filter über den gesamten Gehäusequerschnitt angeordnet, was den Filter extrem teuer macht. Zudem wurde der Filter an einer Stelle angeordnet, an welcher das Auswechseln des Filters für eine Bedienperson mit erheblichen Schwierigkeiten verbunden ist.From US-PS 20 36 694 a vacuum cleaner is known in which a cap provided with a large number of air outlet openings is placed over the motor, so that the air exits into the rear housing space under expansion. There is a filter arranged over the entire cross section of the vacuum cleaner housing, through which the air passes in the direction of the air outlet openings located on the rear of the housing. It is particularly disadvantageous that the expansion of the air has largely taken place before the filter, so that even slight contamination should lead to a reduction in the suction power. For this reason, the filter was also arranged over the entire cross-section of the housing, which makes the filter extremely expensive. In addition, the filter was arranged at a point where the replacement of the filter is associated with considerable difficulties for an operator.

Die DE-OS 29 45 176 beschreibt einen Staubsauger, bei welchem der hinter der Motorgebläseeinheit befindliche Raum mehrgeteilt ist, so daß die Luft auf ihrem Wege von der Motorgebläseeinheit zu den am Boden des Gehäuses angeordneten Luftaustrittsöffnungen mehrfach umgelenkt wird. Die Luft ist dabeinach der ersten Umlenkung vollständig expandiert, passiert Luftaustrittsöffnungen des Motorgebläseraumes, tritt in einen am Boden des Gehäuses angeordneten Raum und passiert vor Austritt in die Umwelt einen Filter. Abgesehen davon, daß auch hier die Luft bereits vollständig vor dem Passieren des Filters expandiert hat, füllt der Filter die gesamte Bodenfläche aus, so daß dieser ungewöhnlich groß und damit teuer ausgestaltet sein muß. Der Ort der Anbringung ist mit den gleichen Auswechselschwierigkeiten für die Bedienperson verbunden.DE-OS 29 45 176 describes a vacuum cleaner in which the space located behind the motor fan unit is divided so that the air is deflected several times on its way from the motor fan unit to the air outlet openings arranged on the bottom of the housing. After the first deflection, the air is completely expanded, passes through air outlet openings in the engine blower compartment, enters a space located at the bottom of the housing and passes through a filter before being released into the environment. In addition to the fact that the air has expanded completely before it passes the filter, the filter fills the entire floor area, so that it must be unusually large and therefore expensive. The location of the attachment is associated with the same replacement difficulties for the operator.

Beiden beschriebenen Lösungen ist zudem der Nachteil gemeinsam, daß, da die Luft vor Erreichen des Filters bereits vollständig expandiert ist, der durch den Filter abzufilternde Staub in dem gesamten Raum niedergeschlagen ist, so daß der gesamte Gehäuseraum bei Filterwechsel gereinigt werden muß, bzw. andererseits eine schnelle Verschmutzung eines neu eingesetzten Filters. stattfinden wird. Damit geht eine ständige Beeinträchtigung der Saugleistung einher.Both of the solutions described also have the disadvantage that, since the air has already completely expanded before reaching the filter, the dust to be filtered by the filter is deposited in the entire room, so that the entire housing space has to be cleaned when changing the filter, or on the other hand rapid contamination of a newly installed filter. will be held. This is accompanied by a permanent impairment of the suction power.

Aufgabe der Erfindung ist es, einen Staubsauger gemäß Oberbegriff des Anspruches 1 derart zu verbessern, daß auf kostengünstige Weise gleichzeitig eine optimale Abfilterung von Partikein aus der in die Umgebung austretenden Luft sichergestellt ist.The object of the invention is to improve a vacuum cleaner according to the preamble of claim 1 such that at the same time an optimal filtering of particles from the air escaping into the environment is ensured in a cost-effective manner.

Diese Aufgabe wird erfindungsgemäß durch die im Kennzeichen des Anspruchs 1 angeführten Merkmale gelöst.This object is achieved by the features stated in the characterizing part of claim 1.

Dabei ist erfindungsgemäß vorgesehen, daß der Motor von einer an das Gebläse luftdicht angesetzten Haube umschlossen ist, die Luftaustrittsöffnung aufweist und ansonsten den Motor luftdicht umfaßt. Durch diese Ausbildung ist innerhalb des Motorraums ein zusätzlicher abgeschlossener Raum ausgebildet, in den das Gebläse die angesaugte Luft befördert. Aus dieser Haube tritt die angesaugte Luft durch hierzu vorgesehene Luftaustrittsöffnungen aus, wodurch sie in den Zwischenraum zwischen dem Staubsaugergehäuse und der Haube eintritt. An der Außenseite der Luftaustrittsöffnungen der Haube ist ein die Luftaustrittsöffnungen umfassender umlaufender Rahmen angesetzt, in den ein Luftfilter mit luftdichtem Anschluß einschiebbar und derart angeordnet ist, daß er von der durch die Luftaustrittsöffnungen austretenden Luft durchströmt wird. Die austretende Luft wird damit praktisch von jeglichen Schadstoffen befreit, so daß sie nach ihrem Austritt aus dem Staubsauger keinerleinachteilige Auswirkungen auf die Umgebung ausüben kann.It is provided according to the invention that the motor is enclosed by an airtight hood attached to the blower, which has an air outlet opening and otherwise encloses the motor in an airtight manner. As a result of this design, an additional closed space is formed within the engine compartment, into which the blower conveys the intake air. The sucked-in air emerges from this hood through air outlet openings provided for this purpose, as a result of which it enters the intermediate space between the vacuum cleaner housing and the hood. On the outside of the air outlet openings of the hood, a circumferential frame comprising the air outlet openings is fitted, into which an air filter with an airtight connection can be inserted and arranged in such a way that the air flowing through the air outlet openings flows through it. The escaping air is thus practically freed from any pollutants, so that after it emerges from the vacuum cleaner it cannot have any detrimental effects on the environment.

Bei dieser erfindungsgemäßen Ausbildung können die Luftaustrittsöffnungen dicht nebeneinander liegend angeordnet werden, so daß die Luft durch einen verhältnismäßig kleinen Luftfilter hindurchgeführt werden kann, ohne daß dies eine nachteilige Auswirkung auf die Umgebung des Staubsaugers haben kann, da die konzentriert aus der Haube ausströmende und an der Austrittsöffnung gereinigte Luft nicht mit dem verhältnismäßig hohen Druck den Staubsauger verläßt, sondern zunächst in den Zwischenraum zwischem dem Staubsaugergehäuse und der Haube eintritt. In diesem Zwischenraun wird die gereinigte Luft zunächst verteilt und beruhigt.In this embodiment of the invention, the air outlet openings can be arranged close to each other, so that the air can be passed through a relatively small air filter without this having an adverse effect on the environment of the vacuum cleaner, as the concentrated outflow from the hood and at the Outlet cleaned air does not leave the vacuum cleaner with the relatively high pressure, but first enters the space between the vacuum cleaner housing and the hood. In this intermediate room, the cleaned air is first distributed and calmed down.

Der Filter ist von einem Kassettenrahmen umfaßt, wodurch seine Handhabung erleichtert ist. An der Außenseite der Haube ist ein die Luftaustrittsöffnungen umfassender umlaufender Rahmen angesetzt, in den der Filterkassettenrahmen mit luftdichtem Anschluß einschiebbar ist. Dabei ist der Rahmen bei Handstaubsaugern zweckmäßigerweise an einer Seite der Haube angeformt, wobei der Filter von der Unterseite des Gehäuses aus vertikal nach oben einschiebbar ist, während bei einem Bodenstaubsauger der Rahmen an der Unterseite der Haube angeformt sein kann und der Filter horizontal eingeführt wird.The filter is enclosed in a cassette frame, which makes it easier to handle. On the outside of the hood there is a circumferential frame surrounding the air outlet openings, into which the filter cassette frame with an airtight connection can be inserted. In the case of handheld vacuum cleaners, the frame is expediently formed on one side of the hood, the filter being insertable vertically upwards from the underside of the housing, while in the case of a floor vacuum cleaner Frame can be formed on the underside of the hood and the filter is inserted horizontally.

Zweckmäßigerweise ist der Filter in dem Rahmen von Leisten abgestützt, so daß er durch die mit beträchtlichem Druck hindurchströmende Luft nicht durchgebogen wird, was anderenfalls zu seiner Beschädigung führen könnte. Der Filter ist zweckmäßigerweise ein Feinfilter, und an dem Kassettenrahmen ist ein Handgriff angeformt, mit dem der Einschub und die Entnahme des Filters besonders leicht ausführbar ist.The filter is expediently supported in the frame by strips, so that it is not bent by the air flowing through it with considerable pressure, which could otherwise lead to its damage. The filter is expediently a fine filter, and a handle is formed on the cassette frame, with which the insertion and removal of the filter can be carried out particularly easily.

Zweckmäßigerweise sind die Luftaustrittsöffnungen des Staubsaugergehäuses in derart großer Anzahl über beträchtliche Flächen des Staubsaugergehäuses verteilt ausgebildet, daß die Luft mit geringer Geschwindigkeit und breiter Verteilung aus dem Staubsaugergehäuse austritt. Die mit niedrigem Druck und guter Verteilung aus dem Staubsaugergehäuse austretende Luft ist auch in unmittelbarer Nähe des Staubsaugers praktisch nicht wahrnehmbar und kann keinerlei lästige Staubverwirbelungen verursachen.The air outlet openings of the vacuum cleaner housing are expediently formed in such a large number distributed over considerable areas of the vacuum cleaner housing that the air emerges from the vacuum cleaner housing at a low speed and with a wide distribution. The air emerging from the vacuum cleaner housing with low pressure and good distribution is practically imperceptible even in the immediate vicinity of the vacuum cleaner and cannot cause any annoying dust turbulence.

Ferner ist mit Vorteil vorgesehen, daß in der Haubenwand ein Absperrorgan ausgebildet ist, das bei einem vorbestimmten Überdruck in der Haube geöffnet wird, so daß die angesaugte Luft aus der Haube ausströmen kann. Da der Benutzer eines Staubsaugers nicht in jedem Fall über den Zustand des Filters informiert ist, durch den die Luft hindurchströmen muß, wenn sie das Staubsaugergehäuse bzw. die Haube verlassen will, kann es leicht vorkommen, daß dieser Filter nicht rechtzeitig ausgewechselt wird. Bei einem zunehmend zugesetzten Filter steigt jedoch der Druck in der sich an das Gebläse anschließenden Haube, wodurch sich die Saugleistung des Staubsaugers zunehmend verringert. Wenn schließlich der Filter vollständig zugesetzt ist, kann das Gebläse keine Luft mehr in die Haube einsaugen, so daß der Staubsauger in diesem Zustand seine Funktion nicht mehr ausüben kann. Dabei kann dann bei einem Benutzer, der dem in dem Staubsauger befindlichen Filter keine Beachtung schenkt, der Eindruck entstehen, als sei das ganze Gerät defekt. Dieses Problem wird durch die Anordnung eines Absperrorgans in der Haubenwand gelöst, das bei einem vorbestimmten Druck infolge eines bis zu einem gewissen Grad zugesetzten Filters geöffnet wird, so daß die angesaugte Luft aus der Haube ausströmen kann. Dabei wird die austretende Luft zwar nicht gereinigt, jedoch bleibt die Funktionsfähigkeit des Staubsaugers erhalten.Furthermore, it is advantageously provided that a shut-off device is formed in the hood wall, which is opened at a predetermined excess pressure in the hood, so that the sucked-in air can flow out of the hood. Since the user of a vacuum cleaner is not always informed about the condition of the filter through which the air has to pass if it wants to leave the vacuum cleaner housing or the hood, it can easily happen that this filter is not replaced in time. With an increasingly clogged filter, however, the pressure in the hood adjoining the blower increases, as a result of which the suction power of the vacuum cleaner is increasingly reduced. Finally, when the filter is completely clogged, the blower can no longer suck air into the hood, so that the vacuum cleaner can no longer perform its function in this state. A user who does not pay attention to the filter in the vacuum cleaner can then get the impression that the entire device is defective. This problem is solved by the arrangement of a shut-off device in the hood wall, which is opened at a predetermined pressure as a result of a filter which has been clogged to a certain degree, so that the sucked-in air can flow out of the hood. The emerging air is not cleaned, but the functionality of the vacuum cleaner is retained.

Zweckmäßigerweise ist das Absperrorgan eine in der Haubenwand ausgebildete Klappe. Diese Klappe rastet bei einem bestimmten Überdruck aus und ist von der Bedienungsperson wieder verschließbar, so daß nach einem Austausch des Filters wieder die gesamte Luft gereinigt wird. Die Ausbildung des Absperrorgans als Klappe ist besonders einfach und kostengünstig.The shut-off device is expediently a flap formed in the hood wall. This flap disengages at a certain overpressure and can be closed again by the operator, so that all the air is cleaned again after the filter has been replaced. The design of the shut-off device as a flap is particularly simple and inexpensive.

Dabei wird vorteilhafterweise das Öffnen der Klappe optisch, elektrisch oder akustisch angezeigt. Dabei kann die Klappe in einer Signalfarbe gestrichen und so angeordnet sein, daß ihr geöffneter Zustand durch Luftaustrittsöffnungen in dem Staubsaugergehäuse sichtbar ist. Dieses Signal gibt dann der Bedienungsperson des Staubsaugers den Hinweis, daß der Filter gewechselt werden muß.The opening of the flap is advantageously indicated optically, electrically or acoustically. The flap can be painted in a signal color and arranged so that its open state is visible through air outlet openings in the vacuum cleaner housing. This signal then gives the operator of the vacuum cleaner the hint that the filter must be changed.

Statt einer optischen Anzeige kann auch ein elektrisches Signal beispielsweise in Form eines erleuchteten Lämpchens oder ein akustischs Signal vorgesehen sein, das beispielsweise durch die durch die geöffnete Klappe austretende Luft in Form eines Pfeiftons erzeugt wird. Durch die Anzeige des Öffnens der Klappe kann zuverlässig verhindert werden, daß ein mit dem Staubsauger vertrauter Benutzer über den nicht mehr funktionsfähigen Stand des Filters uninformiert bleibt.Instead of an optical display, an electrical signal can also be provided, for example in the form of an illuminated lamp, or an acoustic signal which is generated, for example, by the air escaping through the opened flap in the form of a whistle. The display of the opening of the flap can reliably prevent a user familiar with the vacuum cleaner from remaining uninformed about the inoperable state of the filter.

Weiter ist mit besonderem Vorteil vorgesehen, daß an der Haube ein Lagerring für das Gebläse einstückig angeformt ist, der mit der Haube über Stege verbunden ist. Dabei besteht die Haube zweckmäßigerweise aus einem Werkstoff mit elastomeren Anteilen. Durch diese Ausbildung ist die Lagerung des Motors erheblich vereinfacht, da die Haube den bei den bisher bekannten Staubsaugern angeordneten hinteren Lagerring ersetzt, da sie selbst die Schwingungen des Motors im hinreichenden Maße dämpft. Dadurch, daß zudem der vordere Lagerring an der Haube angeformt ist, wird der Aufbau dieses Staubsaugerteils besonders einfach und kostengünstig.Furthermore, it is particularly advantageously provided that a bearing ring for the blower is integrally formed on the hood, which is connected to the hood via webs. The hood expediently consists of a material with elastomeric components. With this design, the mounting of the motor is considerably simplified, since the hood replaces the rear bearing ring arranged in the previously known vacuum cleaners, since it itself sufficiently dampens the vibrations of the motor. The fact that the front bearing ring is integrally formed on the hood, the construction of this vacuum cleaner part is particularly simple and inexpensive.

Damit die aus dem Staubsaugergehäuse austretende Luft auch in der nächsten Umgebung des Staubsaugers praktisch nicht wahrnehmbar ist, kann das Staubsaugergehäuse wenigstens teilweise perforiert sein.So that the air emerging from the vacuum cleaner housing is practically imperceptible in the immediate vicinity of the vacuum cleaner, the vacuum cleaner housing can be at least partially perforated.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung einiger bevorzugter Ausführungsformen sowie anhand der Zeichnung. Dabei zeigen:

  • Fig. 1 einen Längsschnitt durch den Motorraum einer Ausführungsform des erfindungsgemäßen Staubsaugers;
  • Fig. 2 einen Schnitt entlang der Linie 11-11 in Fig. 1;
  • Fig. 3 einen Schnitt entlang der Linie 111-111 in Fig. 1 und Fig. 4 einen Längsschnitt durch einen wesentlichen Teil des Motorraumes einer weiteren Ausführungsform des erfindungsgemäßen Staubsaugers.
Further details and advantages of the invention result from the following description of some preferred embodiments and from the drawing. Show:
  • 1 shows a longitudinal section through the engine compartment of an embodiment of the vacuum cleaner according to the invention.
  • FIG. 2 shows a section along the line 11-11 in FIG. 1;
  • Fig. 3 shows a section along the line 111-111 in Fig. 1 and Fig. 4 shows a longitudinal section through an essential part of the engine compartment of a further embodiment of the vacuum cleaner according to the invention.

In den Fig. 1 bis 3 ist der Motorraum eines Handstaubsaugers dargestellt. Der Motorraum ist von dem hinteren Teil des Staubsaugergehäuses 1 umschlossen und enthält in seinem dem (nicht dargestellten) vorderen Staubraum zugewandten Endabschnitt ein Gebläse 2, das Luft durch den Staubraum und in den Motorraum ansaugt. Hinter dem Gebläse 2 ist der Motor 3 angeordnet, der das Gebläse antreibt.1 to 3, the engine compartment of a handheld vacuum cleaner is shown. The engine compartment is enclosed by the rear part of the vacuum cleaner housing 1 and contains in its end section facing the (not shown) front dust compartment a blower 2 which draws air through the dust compartment and into the engine compartment. The motor 3, which drives the fan, is arranged behind the fan 2.

Der Motor 3 ist in eine Haube 4 eingeschlossen, die luftdicht an das Gebläse anschließt. Damit ist an der Rückseite des Gebläses 2 ein den Motor enthaltender geschlossener Raum geschaffen, aus dem die Luft nur an dazu vorgesehenen Austrittsöffnungen entweichen kann.The motor 3 is enclosed in a hood 4 which connects to the blower in an airtight manner. This creates a closed space containing the motor at the rear of the blower 2, from which the air can only escape at outlet openings provided for this purpose.

Die aus einem elastomeren Kunststoff bestehende Haube dient gleichzeitig als Lagerung für den Motor, so daß ein zusätzlicher Lagerring im hinteren Bereich des Motors nicht erforderlich ist. An dem vorderen Endabschnitt der Haube 4 sind Stege 5 angeformt, die mit einem Lagerring 6 für das Gebläse 2 verbunden sind, wobei der Lagerring 6, die Stege 5 und die Haube 4 einstückig hergestellt sind. Die Haube 4 hat in ihrem hinteren oberen Bereich Durchgangsbohrungen 7, durch die Anschlußkabel 8 derart hindurchgeführt sind, daß die Durchgangsbohrungen luftdicht verschlossen sind.The hood made of an elastomeric plastic also serves as storage for the engine so that an additional bearing ring in the rear area of the engine is not required. At the front end portion of the hood 4, webs 5 are formed, which are connected to a bearing ring 6 for the blower 2, the bearing ring 6, the webs 5 and the hood 4 being produced in one piece. The hood 4 has through holes 7 in its rear upper region, through which the connecting cables 8 are passed such that the through holes are hermetically sealed.

Wie insbesondere aus den Fig. 2 und 3 zu ersehen ist, ist an einer Seite der Haube 4 außen ein Rahmen 9 angeformt, der zur.As can be seen in particular from FIGS. 2 and 3, a frame 9 is formed on the outside of one side of the hood 4, which for.

Aufnahme eines Filters 10 dient. Der Filter 10 wird von der Bodenseite des Staubsaugergehäuses 1 aus mittels eines Handgriffs 11, mit dem der Filter versehen ist, in den Rahmen 9 eingeführt. Der Filter 10 ist von Stegen 12 abgestützt, damit er durch die mit hohem Druck durch Luftaustrittsöffnungen 13 in der Wand der Haube 4 ausströmende Luft nicht durchgebogen und beschädigt wird. Dabei muß die durch die Luftaustrittsöffnungen 13 ausströmende Luft zwangsläufig den Filter 10 durchströmen, um in den Zwischenraum 14 zwischen dem Staubsaugergehäuse 1 und der Haube 4 eintreten zu können, wo sich die mit großer Geschwindigkeit ausströmende Luft verteilt und beruhigt.Includes a filter 10 is used. The filter 10 is inserted into the frame 9 from the bottom of the vacuum cleaner housing 1 by means of a handle 11 with which the filter is provided. The filter 10 is supported by webs 12 so that it is not bent and damaged by the air flowing out at high pressure through air outlet openings 13 in the wall of the hood 4. The air flowing out through the air outlet openings 13 must inevitably flow through the filter 10 in order to be able to enter the space 14 between the vacuum cleaner housing 1 and the hood 4, where the air flowing out at high speed is distributed and calms down.

Die Luft tritt aus zahlreichen Luftaustrittsöffnungen 15 in dem Staubsaugergehäuse 1 in die Umgebung des Staubsaugers aus, ohne schädliche Stoffe zu enthalten und Staubverwirbelungen verursachen zu können, da sie mit geringem Druck und niedriger Geschwindigkeit das Staubsaugergehäuse verläßt.The air emerges from numerous air outlet openings 15 in the vacuum cleaner housing 1 into the surroundings of the vacuum cleaner, without containing harmful substances and being able to cause dust turbulence, since it leaves the vacuum cleaner housing at low pressure and at low speed.

Im oberen Bereich der Haube 4 ist eine Klappe 16 ausgebildet, die dann, wenn der Staudruck in der Haube 4 einen bestimmten Wert übersteigt, durch diesen Innendruck geöffnet wird. Dadurch wird verhindert, daß der Staubsauger durch einen annähernd zugesetzten Filter 10 funktionsunfähig wird, da in diesem Falle die von dem Gebläse 2 in den Motorraum angesaugte Luft die Haube durch die von der geöffneten Klappe freigegebene Öffnung verlassen kann.In the upper area of the hood 4, a flap 16 is formed which, when the back pressure in the hood 4 exceeds a certain value, is opened by this internal pressure. This prevents the vacuum cleaner from becoming inoperable by an approximately clogged filter 10, since in this case the air sucked into the engine compartment by the blower 2 can leave the hood through the opening opened by the opened flap.

In Fig. 4 ist der hintere Teil des Motorraumes eines Bodenstaubsaugers dargestellt. Bei dieser Ausführungsform der Erfindung ist der Rahmen 9 an der Unterseite der Haube 4 angeformt, wo er die Öffnungen 13 in der Haubenwand umfaßt. Der Filter 10 wird hierbei horizontal von der Rückseite des Staubsaugergehäuses 1 aus in den Rahmen 9 eingeführt.In Fig. 4 the rear part of the engine compartment of a cylinder vacuum cleaner is shown. In this embodiment of the invention, the frame 9 is formed on the underside of the hood 4, where it comprises the openings 13 in the hood wall. The filter 10 is inserted horizontally from the rear of the vacuum cleaner housing 1 into the frame 9.

Claims (11)

1. A vacuum cleaner comprising a vacuum cleaner housing (1) having a dust space that is provided with a dust bag placed therein and a motor space being in communication with the dust space and having a blower (2) and a motor (3)-for driving said blower, said blower (2) drawing in air through the dust bag and into the motor space and discharging the air through air outlet ports (15) provided in the vacuum cleaner housing, and the motor (3) being enclosed - except by the vacuum cleaner housing (1) - additionally by a shroud (4) which is air-tightly connected to the blower (2) and has air outlet ports (13) and which otherwise surrounds the motor airtightly, characterized in that a circumferential frame (9) provided with the air outlet ports (13) is arranged on the outside of the shroud (4) for inserting a filter (10) with air-tight connection, which filter is arranged in such a way that air emerging from the air outlet ports passes through said filter.
2. A vacuum cleaner according to claim 1, characterized in that the filter (10) is enclosed by a cassette frame.
3. A vacuum cleaner according to claim 1 or 2, characterized in that the filter (10) is supported in the frame (9) by ribs (12).
4. A vacuum cleaner according to at least one of the preceding claims, characterized in that the filter (10) is a fine filter and that a handle (11) is mounted to the filter cassette frame.
5. A vacuum cleaner according to claim 1, characterized in that the air outlet ports (15) of the vacuum cleaner housing (1) are distributed over a substantial area of the vacuum cleaner housing in such a large amount that the air leaves the vacuum cleaner housing at a low velocity and with a wide distribution.
6. A vacuum cleaner according to claim 5, characterized in that the vacuum cleaner housing (1) is at least partly perforated.
7. A vacuum cleaner according to any of the preceding claims, characterized in that in the wall of the shroud (4) a shutoff device (16) is formed, which is opened when a predetermined overpressure in the shroud has been reached, so that the air drawn in can flow out of the shroud.
8. A vacuum cleaner according to claim 7, characterized in that the shutoff device is a flap (16) arranged in the wall of the shroud (4).
9. A vacuum cleaner according to claim 8, characterized in that the opening of the flap (16) is indicated optically, electrically or acoustically.
10. A vacuum cleaner according to any of the claims 1 to 7, characterized in that a bearing ring (6) for the blower (2) is arranged in one piece on the shroud (4), which bearing ring is connected to the shroud by means of ribs (5).
11. A vacuum cleaner according to any of the claims 1 to 7 and 10, characterized in that the shroud (4) is made of a material with elastomer components.
EP85114980A 1984-11-30 1985-11-26 Vacuum cleaner Expired - Lifetime EP0184113B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85114980T ATE55687T1 (en) 1984-11-30 1985-11-26 VACUUM CLEANER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843443837 DE3443837A1 (en) 1984-11-30 1984-11-30 VACUUM CLEANER
DE3443837 1984-11-30

Publications (3)

Publication Number Publication Date
EP0184113A2 EP0184113A2 (en) 1986-06-11
EP0184113A3 EP0184113A3 (en) 1988-03-16
EP0184113B1 true EP0184113B1 (en) 1990-08-22

Family

ID=6251640

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85114980A Expired - Lifetime EP0184113B1 (en) 1984-11-30 1985-11-26 Vacuum cleaner

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US (1) US4733429A (en)
EP (1) EP0184113B1 (en)
JP (1) JPS61135626A (en)
AT (1) ATE55687T1 (en)
AU (1) AU580115B2 (en)
CA (1) CA1262605A (en)
DE (2) DE3443837A1 (en)
DK (1) DK539785A (en)
NZ (1) NZ214328A (en)

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DE3904392A1 (en) * 1989-02-14 1990-08-16 Mauz & Pfeiffer Progress VACUUM CLEANER
JP3047984B2 (en) * 1990-04-18 2000-06-05 株式会社日立製作所 Electric vacuum cleaner
US5353469A (en) * 1992-07-01 1994-10-11 National Super Service Company Wet/dry vacuum cleaner with noise reducing housing structure
US5479676A (en) * 1994-05-12 1996-01-02 Electrolux Corporation Vacuum cleaner
US6085382A (en) 1997-01-10 2000-07-11 White Consolidated Industries, Inc. Air filtrating self-propelled upright vacuum cleaner
US5813085A (en) * 1997-02-25 1998-09-29 White Consolidated Industries, Inc. Motor isolation gasket for central vacuum
FR2767050B1 (en) * 1997-08-08 1999-11-05 Thierry Andre Azemar ANIMAL ELEPHANT VACUUM WITH MULTIDIRECTIONAL TRUMP
US6077032A (en) * 1998-07-16 2000-06-20 Felchar Manufacturing Corporation Housing assembly for a vacuum cleaner
DE19909543A1 (en) * 1999-03-04 2000-09-07 Bsh Bosch Siemens Hausgeraete vacuum cleaner
DE10200913A1 (en) * 2002-01-12 2003-07-24 Vorwerk Co Interholding High-speed electric motor
CA2476147C (en) * 2003-07-31 2008-06-03 Matsushita Electric Corporation Of America Motor enclosure for a vacuum cleaner
ITMI20040577A1 (en) * 2004-03-24 2004-06-24 Ametek Italia S R L LOW NOISE MOTORIZED SUCTION UNIT FOR CLEANING APPLIANCES AND APPLIANCE WITH IT
KR100725515B1 (en) * 2005-12-15 2007-06-08 삼성광주전자 주식회사 Vacuum cleaner having noise reducing structure of motor
FR2902632B1 (en) * 2006-06-27 2012-06-08 Seb Sa VACUUM
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KR20090046052A (en) * 2007-11-05 2009-05-11 삼성광주전자 주식회사 Discharging apparatus and vacuum cleaner having the same

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Also Published As

Publication number Publication date
DE3443837A1 (en) 1986-06-05
EP0184113A2 (en) 1986-06-11
DK539785A (en) 1986-05-31
JPS61135626A (en) 1986-06-23
AU580115B2 (en) 1989-01-05
US4733429A (en) 1988-03-29
DK539785D0 (en) 1985-11-21
ATE55687T1 (en) 1990-09-15
CA1262605A (en) 1989-11-07
DE3579297D1 (en) 1990-09-27
NZ214328A (en) 1988-02-12
DE3443837C2 (en) 1988-02-25
AU5040485A (en) 1986-06-05
EP0184113A3 (en) 1988-03-16

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