EP3790437B1 - Air ejector system for a portable dry vacuum cleaning unit - Google Patents

Air ejector system for a portable dry vacuum cleaning unit Download PDF

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Publication number
EP3790437B1
EP3790437B1 EP19719851.8A EP19719851A EP3790437B1 EP 3790437 B1 EP3790437 B1 EP 3790437B1 EP 19719851 A EP19719851 A EP 19719851A EP 3790437 B1 EP3790437 B1 EP 3790437B1
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EP
European Patent Office
Prior art keywords
dry vacuum
vacuum cleaner
air
housing
air outlet
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.)
Active
Application number
EP19719851.8A
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German (de)
French (fr)
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EP3790437A1 (en
Inventor
Sonya Wörz
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Hilti AG
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Hilti AG
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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/14—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum cleaning by blowing-off, also combined with suction cleaning
    • 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
    • A47L7/00—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids
    • A47L7/04—Suction cleaners adapted for additional purposes; Tables with suction openings for cleaning purposes; Containers for cleaning articles by suction; Suction cleaners adapted to cleaning of brushes; Suction cleaners adapted to taking-up liquids for using the exhaust air for other purposes, e.g. for distribution of chemicals in a room, for sterilisation of the air
    • 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
    • A47L5/00—Structural features of suction cleaners
    • A47L5/12—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/24—Hand-supported suction cleaners
    • 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
    • A47L9/22—Mountings for motor fan assemblies
    • 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
    • A47L9/248—Parts, details or accessories of hoses or pipes

Definitions

  • the present invention relates to an air blow-out system for a dry vacuum cleaner. Suction air sucked in by the dry vacuum cleaner can be blown out to the environment as exhaust air via an air blow-out system.
  • the invention also relates to a dry vacuum cleaner with such an air blow-out system. Air blow-out systems or dry vacuum cleaners of the type mentioned at the outset are known in principle from the prior art.
  • a similar vacuum cleaner is from the JP H 013 106 24 A known.
  • the air blow-out system has a receiving bay to be arranged in a housing of the dry vacuum cleaner, in which either an air filter insert or a blow-out adapter can be accommodated, the blow-out adapter having an outlet fitting for connecting a blower hose and the air filter insert not having such an outlet fitting.
  • the air blow-out system creates the basis for a dry vacuum cleaner with which—in suction operation—suction air can be sucked in via an inlet fitting and this suction air can be blown out to the environment as exhaust air.
  • suction air can be sucked in via an inlet fitting and this suction air can be blown out to the environment as exhaust air.
  • an air filter insert is accommodated in the receiving bay provided according to the invention, the exhaust air is filtered and blown out through the air filter insert to the environment.
  • the blow-out adapter is used in the receiving bay instead of the air filter insert, a blow-out hose for blow-out operation of the dry vacuum cleaner can be connected to its outlet fitting. Suction air flowing in via the inlet fitting accordingly flows as exhaust air through the outlet fitting and any blower hose connected to it to the environment.
  • the air blow-out system according to the invention creates the basis for a dry vacuum cleaner of particularly compact design.
  • Such a dry vacuum cleaner is equipped with an air blow-out system according to the invention, the receiving bay of the air blow-out system being arranged in the housing of the dry vacuum cleaner, and the dry vacuum cleaner also having an inlet fitting designed for connecting a suction hose, which is arranged on the housing and via which the suction air in use, with the receiving bay extending across a corner of the housing.
  • dry vacuum cleaners known from the prior art can, for example, have an air outlet at their rear end of the housing, which is suitable for inserting a blower hose.
  • This allows the dry vacuum cleaner to be used as a so-called "blower".
  • the smaller the cross-sectional area of the exhaust opening the higher the exhaust air exhaust speed and thus an undesirable dust turbulence of ambient dust.
  • users or people in the vicinity of such dry vacuum cleaners can be unpleasantly "blown on”.
  • the high blow-out speed described is a problem, particularly in the case of compact dry vacuum cleaners.
  • the dry vacuum cleaner according to the invention has a receiving bay which extends over a corner of the housing. This corner positioning saves space on the housing of the dry vacuum cleaner and enables an outlet with a comparatively large flow cross section.
  • the receiving bay is designed as a diffuser. A reduction in the outflow velocity of the exhaust air can thus already be achieved.
  • At least one retaining dome can be provided in the receiving bay, to which the blow-out adapter can be fastened.
  • Two retaining domes are preferably provided within a volume of the receiving bay.
  • the blow-out adapter can have one or two plug-in or clamping pins by means of which the blow-out adapter can be fastened to the holding dome or the holding domes.
  • the blow-out adapter can be secured in the receiving bay by means of a screw connection.
  • the air filter insert has a frame with a plurality of filter openings. As a result, a linearization of the otherwise turbulent air flowing out of the receiving bay designed as a diffuser can be achieved.
  • the dry vacuum cleaner preferably has an essentially cuboid housing. It has turned out to be advantageous if the receiving bay extends over at least 25% of the total height of the housing. Preferably, the receiving bay, based on the two surface portions of the housing at the common corner, takes an approximately equal cross-sectional area. In other words, the receiving bay can be formed symmetrically over the corner of the essentially cuboid housing of the dry vacuum cleaner.
  • the dry vacuum cleaner is battery-operated.
  • the dry vacuum cleaner is particularly preferably designed to be exclusively battery-operated.
  • the dry vacuum cleaner is portable with a weight of less than 10 kg. This preferably includes the weight of an accumulator provided for operating the dry vacuum cleaner (preferably a 22-volt accumulator).
  • a preferred embodiment of a dry vacuum cleaner 100 according to the invention is 1 shown.
  • the dry vacuum cleaner 100 der 1 is designed as a compact and portable vacuum cleaner, which in this case can only be operated with a battery.
  • the battery bay 80 shown serves to accommodate a supply battery, not shown here, which preferably has a voltage of 22 V. 1 shows a rear perspective view of the dry vacuum cleaner 100.
  • the dry vacuum cleaner 100 has a housing 90 which is cuboid in the exemplary embodiment shown here.
  • an inlet fitting 10 which is used to connect a suction hose 210, which is only shown schematically here.
  • the inlet fitting 10 is located on the front of the dry vacuum cleaner 100 and is accordingly in 1 only partially visible.
  • an air blowing system 50 of the dry vacuum cleaner 100 is arranged on the opposite side of the inlet fitting 10 of the housing 90, ie in the foreground 1 .
  • the air outlet system 50 has a receiving bay 23 which is guided over a corner E (dashed vertical line indicates corner E). In other words, the receiving bay 23 extends over the corner E of the housing 90 away.
  • the receiving bay 23 extends to at least 25% of the overall height GH of the housing 90.
  • suction air SL air from the environment U is drawn in as suction air SL into the inlet fitting 10 or into the suction hose 210 connected to the inlet fitting 10 .
  • This suction air SL carries dirt particles that are separated inside the dry vacuum cleaner 100 .
  • a filter (not shown) inside the dry vacuum cleaner 100 is responsible for this.
  • the sucked-in suction air SL is then blown out to the environment U as exhaust air AL. This is done through the air blow-out system 50, more precisely through the receiving bay 23 shown here.
  • the receiving bay 23 is designed as a diffuser, so that the exiting exhaust air AL is already experiencing a reduction in speed.
  • the air discharge system 50 has two modular components, namely a discharge adapter 27 (cf. 2 ) and an air filter insert 25 (cf. 3 and 4 ).
  • a discharge adapter 27 cf. 2
  • an air filter insert 25 cf. 3 and 4
  • a holding dome 24 located within a lumen of the receiving bay 23 is used to fasten the blow-out adapter 27 via a clamping pin which corresponds to the holding dome 24 .
  • More accurate Said two retaining domes 24 are arranged in the receiving bay 23, of which only the lower one can be seen here.
  • blow-out adapter 27 now shows the dry vacuum cleaner 100, with a blow-out adapter 27 being accommodated in the air blow-out system 50.
  • the blow-out adapter 27 has an outlet fitting 29 for connecting a blow-out tube 290, shown schematically here.
  • the suction air SL sucked in via the inlet fitting 10 now exits to the environment U via the outlet fitting 29 or via the blow hose 290 to be connected to the blow-out adapter 27 .
  • blow-out adapter 27 is arranged with a precise fit in the receiving bay 23 .
  • the blow-out adapter 27 has a cylindrical opening with a stepped stop 28 .
  • a hose end 29 ′ of the blow hose 290 can be inserted with a precise fit into this opening, with the counter-stop 28 ′ coming to abut against the stop 28 of the blow-out adapter 27 .
  • the inner opening of the blow-out adapter 27 is cylindrical, corresponding to the hose end 29'.
  • a conical connection can be realized between the blow-out adapter 27 and the hose end 29'.
  • blow-out adapter 27 accommodated in the accommodation bay 23 also stretches over the corner E, taking up surface portions of the back and the side of the housing 90 of the dry vacuum cleaner 100 .
  • the blow-out adapter 27 is held securely within the receiving bay 23 via two clamping pins 26', which are inserted in the in 1 Retaining dome 24 shown engage.
  • FIG. 3 shows the dry vacuum cleaner 100, with an air filter insert 25 being accommodated in the accommodation bay 23 (covered here) of the air blow-out system 50.
  • the blow-out adapter 27 shown is the air filter insert 25 in 3 free of any outlet fitting. In other words, no blower hose or the like should be connected to the air filter insert 25 . Rather, the suction air SL sucked in by the dry vacuum cleaner exits the air filter insert 25 to the environment U as exhaust air AL. This takes place through a number of filter openings 24 ′, which are defined by a frame 24 of the air filter insert 25 .
  • the frame 24 sits together with the filter mat behind the filter openings 24' which can be seen over the corner E of the housing 90 3 can be removed, there are both filter openings 24 'on the side and on the back of the housing 90, whereby a comparatively large outflow cross-section for exhaust air AL is provided.
  • the air filter insert 25 together with the frame 24 is fastened to the housing 90 via a clip fastener 22 .
  • exhaust air AL flows backwards (out of the image plane into 4 ) and to the side (to the left in 4 ) out of the filter insert 25.
  • the total of the filter openings 24' distributed over two housing walls offer a comparatively large outflow cross section for the exhaust air AL.
  • a flow speed of the exhaust air AL is reduced as desired. Due to the fact that flow quantities of the exhaust air AL flow out both from the rear and from the side (side different from the rear), an unpleasant blowing on of users in the vicinity of the dry vacuum cleaner is significantly reduced.
  • the receiving bay 23 nestles against the battery bay 80 provided on the housing 90, as a result of which a particularly compact design of the dry vacuum cleaner 100 is ensured.

Description

Die vorliegende Erfindung betrifft ein Luftausblassystem für einen Trockensauger. Über ein Luftausblassystem kann vom Trockensauger eingesaugte Saugluft als Abluft zur Umgebung ausgeblasen werden. Die Erfindung betrifft ebenfalls einen Trockensauger mit einem solchen Luftausblassystem. Luftausblassysteme bzw. Trockensauger der eingangs genannten Art sind grundsätzlich aus dem Stand der Technik bekannt.The present invention relates to an air blow-out system for a dry vacuum cleaner. Suction air sucked in by the dry vacuum cleaner can be blown out to the environment as exhaust air via an air blow-out system. The invention also relates to a dry vacuum cleaner with such an air blow-out system. Air blow-out systems or dry vacuum cleaners of the type mentioned at the outset are known in principle from the prior art.

Ein ähnlicher Staubsauger ist aus der JP H 013 106 24 A bekannt.A similar vacuum cleaner is from the JP H 013 106 24 A known.

Es ist Aufgabe der vorliegenden Erfindung, ein Luftausblassystem bereitzustellen, das einen kompakten und flexiblen Aufbau eines Trockensauger begünstigt.It is the object of the present invention to provide an air blow-out system that promotes a compact and flexible construction of a dry vacuum cleaner.

Die Aufgabe wird dadurch gelöst, dass das Luftausblassystem eine in einem Gehäuse des Trockensaugers anzuordnende Aufnahmebucht aufweist, in der wahlweise ein Luftfiltereinsatz oder ein Ausblasadapter aufnehmbar ist, wobei der Ausblasadapter ein Auslassfitting zum Anschluss eines Blasschlauchs aufweist und der Luftfiltereinsatz frei von einem solchen Auslassfitting ist.The object is achieved in that the air blow-out system has a receiving bay to be arranged in a housing of the dry vacuum cleaner, in which either an air filter insert or a blow-out adapter can be accommodated, the blow-out adapter having an outlet fitting for connecting a blower hose and the air filter insert not having such an outlet fitting.

Das erfindungsgemäße Luftausblassystem schafft die Grundlage für einen Trockensauger, mit dem - in einem Saugbetrieb - Saugluft über ein Einlassfitting angesaugt werden kann und diese Saugluft als Abluft zur Umgebung ausgeblasen werden kann. Ist in die erfindungsgemäß vorgesehene Aufnahmebucht ein Luftfiltereinsatz aufgenommen, so wird die Abluft gefiltert zur Umgebung durch den Luftfiltereinsatz ausgeblasen. Ist hingegen statt des Luftfiltereinsatzes der Ausblasadapter in der Aufnahmebucht angenommen, so kann an dessen Auslassfitting ein Blasschlauch für einen Blasbetrieb des Trockensaugers angeschlossen werden. Über das Einlassfitting einströmende Saugluft strömt als Abluft demnach durch das Auslassfitting und einen etwaigen daran angeschlossenen Blasschlauch zur Umgebung.The air blow-out system according to the invention creates the basis for a dry vacuum cleaner with which—in suction operation—suction air can be sucked in via an inlet fitting and this suction air can be blown out to the environment as exhaust air. If an air filter insert is accommodated in the receiving bay provided according to the invention, the exhaust air is filtered and blown out through the air filter insert to the environment. If, on the other hand, the blow-out adapter is used in the receiving bay instead of the air filter insert, a blow-out hose for blow-out operation of the dry vacuum cleaner can be connected to its outlet fitting. Suction air flowing in via the inlet fitting accordingly flows as exhaust air through the outlet fitting and any blower hose connected to it to the environment.

Das erfindungsgemäße Luftausblassystem schafft die Grundlage für einen Trockensauger besonders kompakter Bauart.The air blow-out system according to the invention creates the basis for a dry vacuum cleaner of particularly compact design.

Ein solcher Trockensauger ist ausgestattet mit einem erfindungsgemäßen Luftausblassystem, wobei die Aufnahmebucht des Luftausblassystems in dem Gehäuse des Trockensaugers angeordnet ist, und der Trockensauger weiterhin ein zum Anschluss eines Saugschlauchs ausgebildetes Einlassfitting aufweist, das am Gehäuse angeordnet ist und über das die Saugluft im Betrieb eingesaugt wird, wobei sich die Aufnahmebucht über eine Ecke des Gehäuses hinweg erstreckt.Such a dry vacuum cleaner is equipped with an air blow-out system according to the invention, the receiving bay of the air blow-out system being arranged in the housing of the dry vacuum cleaner, and the dry vacuum cleaner also having an inlet fitting designed for connecting a suction hose, which is arranged on the housing and via which the suction air in use, with the receiving bay extending across a corner of the housing.

Diesbezüglich wurde erkannt, dass aus dem Stand der Technik bekannte Trockensauger beispielsweise an ihrem hinteren Gehäuseende einen Luftauslass aufweisen können, der zum Einstecken eines Blasschlauchs geeignet ist. Hierdurch kann der Trockensauger als sogenannter "Blower" genutzt werden. Als problematisch wurde erkannt, dass je kleiner die Querschnittsfläche der Ausblasöffnung ist, desto höher auch die Ausblasgeschwindigkeit der Abluft und somit eine unerwünschte Staubverwirbelung von Umgebungsstaub ist. Ebenfalls können Benutzer oder Personen in der Umgebung solcher Trockensauger unangenehm "angeblasen" werden. Die beschriebene hohe Ausblasgeschwindigkeit ist insbesondere bei kompakten Trockensaugern ein Problem.In this regard, it was recognized that dry vacuum cleaners known from the prior art can, for example, have an air outlet at their rear end of the housing, which is suitable for inserting a blower hose. This allows the dry vacuum cleaner to be used as a so-called "blower". It was recognized as problematic that the smaller the cross-sectional area of the exhaust opening, the higher the exhaust air exhaust speed and thus an undesirable dust turbulence of ambient dust. Likewise, users or people in the vicinity of such dry vacuum cleaners can be unpleasantly "blown on". The high blow-out speed described is a problem, particularly in the case of compact dry vacuum cleaners.

In Abkehr dazu weist der erfindungsgemäße Trockensauger eine Aufnahmebucht auf, die sich über eine Ecke des Gehäuses hinweg erstreckt. Durch diese Positionierung über Eck kann am Gehäuse des Trockensaugers Platz gespart werden bzw. ein Auslass mit vergleichsweise hohem Strömungsquerschnitt ermöglicht werden.In contrast to this, the dry vacuum cleaner according to the invention has a receiving bay which extends over a corner of the housing. This corner positioning saves space on the housing of the dry vacuum cleaner and enables an outlet with a comparatively large flow cross section.

Es hat sich als vorteilhaft herausgestellt, wenn der Luftfiltereinsatz und/oder der Ausblasadapter modularer Teil des Luftausblassystems sind.It has turned out to be advantageous if the air filter insert and/or the blow-out adapter are a modular part of the air blow-out system.

In einer besonders bevorzugten Ausgestaltung ist die Aufnahmebucht als Diffusor ausgebildet. Somit kann bereits eine Reduktion der Ausströmgeschwindigkeit der Abluft erreicht werden.In a particularly preferred embodiment, the receiving bay is designed as a diffuser. A reduction in the outflow velocity of the exhaust air can thus already be achieved.

In der Aufnahmebucht kann wenigstens ein Haltedom vorgesehen sein, an dem der Ausblasadapter befestigt werden kann. Vorzugsweise sind zwei Haltedome innerhalb eines Volumens der Aufnahmebucht vorgesehen. Dementsprechend kann der Ausblasadapter ein oder zwei Steck- oder Klemmstifte aufweisen mittels welcher der Ausblasadapter an dem Haltedom oder den Haltedomen befestigt werden kann. Alternativ kann der Ausblasadapter mittels einer Schraubverbindung in der Aufnahmebucht gesichert sein.At least one retaining dome can be provided in the receiving bay, to which the blow-out adapter can be fastened. Two retaining domes are preferably provided within a volume of the receiving bay. Accordingly, the blow-out adapter can have one or two plug-in or clamping pins by means of which the blow-out adapter can be fastened to the holding dome or the holding domes. Alternatively, the blow-out adapter can be secured in the receiving bay by means of a screw connection.

Es hat sich als vorteilhaft herausgestellt, wenn der Luftfiltereinsatz einen Rahmen mit einer Mehrzahl von Filteröffnungen aufweist. Dadurch kann eine Linearisierung der ansonsten turbulent aus der als Diffusor ausgebildeten Aufnahmebucht ausströmenden Luft erreicht werden.It has turned out to be advantageous if the air filter insert has a frame with a plurality of filter openings. As a result, a linearization of the otherwise turbulent air flowing out of the receiving bay designed as a diffuser can be achieved.

Der Trockensauger weist vorzugsweise ein im Wesentlichen quaderförmiges Gehäuse auf. Es hat sich als vorteilhaft herausgestellt, wenn sich die Aufnahmebucht wenigstens über 25% der Gesamthöhe des Gehäuses erstreckt. Vorzugsweise nimmt die Aufnahmebucht, bezogen an die beiden an der gemeinsamen Ecke anstehenden Oberflächenanteile des Gehäuses, eine etwa gleich große Querschnittsfläche ein. Mit anderen Worten kann die Aufnahmebucht symmetrisch über der Ecke des im Wesentlichen quaderförmig ausgebildeten Gehäuses des Trockensaugers ausgebildet sein.The dry vacuum cleaner preferably has an essentially cuboid housing. It has turned out to be advantageous if the receiving bay extends over at least 25% of the total height of the housing. Preferably, the receiving bay, based on the two surface portions of the housing at the common corner, takes an approximately equal cross-sectional area. In other words, the receiving bay can be formed symmetrically over the corner of the essentially cuboid housing of the dry vacuum cleaner.

Es hat sich als vorteilhaft herausgestellt, wenn das Einlassfitting des Trockensaugers und die Aufnahmebucht auf einander gegenüberliegenden Seiten des Gehäuses befindlich sind.It has been found to be advantageous if the inlet fitting of the dry vacuum cleaner and the receiving bay are on opposite sides of the housing.

In einer besonders bevorzugten Ausgestaltung ist der Trockensauger akkubetrieben ausgebildet. Besonders bevorzugt ist der Trockensauger ausschließlich akkubetrieben ausgebildet. In einer weiteren bevorzugten Ausgestaltung ist der Trockensauger tragbar mit einem Gewicht von weniger als 10 kg ausgebildet. Dies schließt vorzugsweise das Gewicht eines zum Betrieb des Trockensaugers vorgesehenen Akkumulators (vorzugsweise 22 Volt-Akku) ein.In a particularly preferred embodiment, the dry vacuum cleaner is battery-operated. The dry vacuum cleaner is particularly preferably designed to be exclusively battery-operated. In a further preferred embodiment, the dry vacuum cleaner is portable with a weight of less than 10 kg. This preferably includes the weight of an accumulator provided for operating the dry vacuum cleaner (preferably a 22-volt accumulator).

Weitere Vorteile ergeben sich aus der folgenden Figurenbeschreibung. In den Figuren sind verschiedene Ausführungsbeispiele der vorliegenden Erfindung dargestellt. Die Figuren, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und sinnvollen weiteren Kombinationen zusammenfassen.Further advantages result from the following description of the figures. Various exemplary embodiments of the present invention are shown in the figures. The figures, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and summarize them in further meaningful combinations.

In den Figuren sind gleiche und gleichartige Komponenten mit gleichen Bezugszeichen beziffert.In the figures, the same and similar components are denoted by the same reference symbols.

Es zeigen:Show it:

Fig. 11
ein bevorzugtes Ausführungsbeispiel eines tragbaren Trockensaugers mit Luftausblassystem;a preferred embodiment of a portable dry vacuum cleaner with air purge system;
Fig. 22
das Ausführungsbeispiel der Fig. 1, wobei in der Aufnahmebucht ein Ausblasadapter aufgenommen ist;the embodiment of the 1 wherein a blow-out adapter is received in the receiving bay;
Fig. 33
das Ausführungsbeispiel der Fig. 1, wobei in der Aufnahmebucht ein Luftfiltereinsatz aufgenommen ist; undthe embodiment of the 1 wherein an air filter cartridge is received in the receiving bay; and
Fig. 44
das Ausführungsbeispiel der Fig. 3 in einer anderen Ansicht.the embodiment of the 3 in a different view.
Ausführungsbeispiel:Example:

Ein bevorzugtes Ausführungsbeispiel eines erfindungsgemäßen Trockensaugers 100 ist in Fig. 1 dargestellt. Der Trockensauger 100 der Fig. 1 ist als kompakter und tragbarer Staubsauger ausgebildet, der vorliegend ausschließlich akkubetreibbar ist. Die in Fig. 1 dargestellte Akkubucht 80 dient der Aufnahme eines hier nicht dargestellten Versorgungsakkus, der vorzugsweise eine Spannung von 22 V aufweist. Fig. 1 zeigt eine rückwärtige perspektivische Sicht auf den Trockensauger 100.A preferred embodiment of a dry vacuum cleaner 100 according to the invention is 1 shown. The dry vacuum cleaner 100 der 1 is designed as a compact and portable vacuum cleaner, which in this case can only be operated with a battery. In the 1 The battery bay 80 shown serves to accommodate a supply battery, not shown here, which preferably has a voltage of 22 V. 1 shows a rear perspective view of the dry vacuum cleaner 100.

Der Trockensauger 100 weist ein Gehäuse 90 auf, das im vorliegend dargestellten Ausführungsbeispiel quaderförmig ausgebildet ist. Am Gehäuse 90 angeordnet ist ein Einlassfitting 10, das zum Anschluss eines hier lediglich schematisch dargestellten Saugschlauchs 210 dient. Das Einlassfitting 10 befindet sich auf der Vorderseite des Trockensaugers 100 und ist dementsprechend in Fig. 1 lediglich abschnittsweise zu erkennen. Auf der dem Einlassfitting 10 gegenüberliegenden Seite des Gehäuses 90, d.h. im Vordergrund der Fig. 1, ist ein Luftblassystem 50 des Trockensaugers 100 angeordnet. Das Luftausblassystem 50 weist eine Aufnahmebucht 23 auf, die über eine Ecke E (gestrichelte senkrechte Linie deutet Ecke E an) geführt ist. Mit anderen Worten erstreckt sich die Aufnahmebucht 23 über die Ecke E des Gehäuses 90 hinweg. Dabei erstreckt sich die Aufnahmebucht 23 zu wenigstens 25% der Gesamthöhe GH des Gehäuses 90.The dry vacuum cleaner 100 has a housing 90 which is cuboid in the exemplary embodiment shown here. Arranged on the housing 90 is an inlet fitting 10, which is used to connect a suction hose 210, which is only shown schematically here. The inlet fitting 10 is located on the front of the dry vacuum cleaner 100 and is accordingly in 1 only partially visible. On the opposite side of the inlet fitting 10 of the housing 90, ie in the foreground 1 , an air blowing system 50 of the dry vacuum cleaner 100 is arranged. The air outlet system 50 has a receiving bay 23 which is guided over a corner E (dashed vertical line indicates corner E). In other words, the receiving bay 23 extends over the corner E of the housing 90 away. The receiving bay 23 extends to at least 25% of the overall height GH of the housing 90.

Während des Betriebs des Trockensaugers 100 wird Luft aus der Umgebung U als Saugluft SL in das Einlassfitting 10 bzw. den an das Einlassfitting 10 angeschlossenen Saugschlauch 210 eingesaugt. Diese Saugluft SL trägt Schmutzpartikel, die innerhalb des Trockensaugers 100 abgeschieden werden. Hierfür ist ein nicht weiter dargestellter Filter innerhalb des Trockensaugers 100 verantwortlich. Anschließend wird die eingesaugte Saugluft SL als Abluft AL zur Umgebung U ausgeblasen. Dies geschieht durch das Luftausblassystem 50, genauer gesagt durch die hier dargestellte Aufnahmebucht 23 hindurch.During the operation of the dry vacuum cleaner 100 , air from the environment U is drawn in as suction air SL into the inlet fitting 10 or into the suction hose 210 connected to the inlet fitting 10 . This suction air SL carries dirt particles that are separated inside the dry vacuum cleaner 100 . A filter (not shown) inside the dry vacuum cleaner 100 is responsible for this. The sucked-in suction air SL is then blown out to the environment U as exhaust air AL. This is done through the air blow-out system 50, more precisely through the receiving bay 23 shown here.

Wie der Fig. 1 entnommen werden kann, ist die Aufnahmebucht 23 als Diffusor ausgebildet, sodass die austretende Abluft AL bereits eine Verringerung ihrer Geschwindigkeit erfährt.Again 1 can be removed, the receiving bay 23 is designed as a diffuser, so that the exiting exhaust air AL is already experiencing a reduction in speed.

Das Luftausblassystem 50 weist zwei modulare Komponenten auf, nämlich einen Ausblasadapter 27 (vgl. Fig. 2) sowie einen Luftfiltereinsatz 25 (vgl. Fig. 3 und 4). In Fig. 1 ist die Aufnahmebucht 23 ohne darin aufgenommene Einsätze gut erkennbar. Ein innerhalb eines Lumens der Aufnahmebucht 23 befindlicher Haltedom 24 dient dem Befestigen des Ausblasadapters 27 über einen Klemmstift, der mit dem Haltedom 24 korrespondiert. Genauer gesagt sind in der Aufnahmebucht 23 zwei Haltedome 24 angeordnet, von denen lediglich der untere hier erkennbar ist.The air discharge system 50 has two modular components, namely a discharge adapter 27 (cf. 2 ) and an air filter insert 25 (cf. 3 and 4 ). In 1 the receiving bay 23 without inserts received therein is easily recognizable. A holding dome 24 located within a lumen of the receiving bay 23 is used to fasten the blow-out adapter 27 via a clamping pin which corresponds to the holding dome 24 . More accurate Said two retaining domes 24 are arranged in the receiving bay 23, of which only the lower one can be seen here.

Fig. 2 zeigt nunmehr den Trockensauger 100, wobei in dem Luftausblassystem 50 ein Ausblasadapter 27 aufgenommen ist. Der Ausblasadapter 27 weist ein Auslassfitting 29 zum Anschluss eines hier schematisch dargestellten Blasschlauchs 290 auf. Die über das Einlassfitting 10 eingesaugte Saugluft SL tritt nunmehr über das Auslassfitting 29 bzw. über den am Ausblasadapter 27 anzuschließenden Blasschlauch 290 zur Umgebung U aus. 2 now shows the dry vacuum cleaner 100, with a blow-out adapter 27 being accommodated in the air blow-out system 50. The blow-out adapter 27 has an outlet fitting 29 for connecting a blow-out tube 290, shown schematically here. The suction air SL sucked in via the inlet fitting 10 now exits to the environment U via the outlet fitting 29 or via the blow hose 290 to be connected to the blow-out adapter 27 .

Wie der Fig. 2 entnommen werden kann, ist der Ausblasadapter 27 passgenau in der Aufnahmebucht 23 angeordnet.Again 2 can be removed, the blow-out adapter 27 is arranged with a precise fit in the receiving bay 23 .

Der Ausblasadapter 27 weist eine zylindrische Öffnung mit abgesetztem Anschlag 28 auf. In diese Öffnung kann ein Schlauchende 29' des Blasschlauchs 290 passgenau eingeschoben werden, wobei der Gegenanschlag 28' am Anschlag 28 des Ausblasadapters 27 zum Anschlag kommt. Die innere Öffnung des Ausblasadapters 27 ist entsprechend des Schlauchendes 29' zylindrisch ausgebildet. Alternativ kann eine konische Verbindung zwischen Ausblasadapter 27 und Schlauchende 29' realisiert sein.The blow-out adapter 27 has a cylindrical opening with a stepped stop 28 . A hose end 29 ′ of the blow hose 290 can be inserted with a precise fit into this opening, with the counter-stop 28 ′ coming to abut against the stop 28 of the blow-out adapter 27 . The inner opening of the blow-out adapter 27 is cylindrical, corresponding to the hose end 29'. Alternatively, a conical connection can be realized between the blow-out adapter 27 and the hose end 29'.

Wie der Fig. 2 gut entnommen werden kann, streckt sich auch der in der Aufnahmebucht 23 aufgenommene Ausblasadapter 27 über die Ecke E hinweg, wobei er Oberflächenanteile der Rückseite sowie der Seite des Gehäuses 90 des Trockensaugers 100 einnimmt. Sicher gehalten innerhalb der Aufnahmebucht 23 wird der Ausblasadapter 27 über zwei Klemmstifte 26', die in die in Fig. 1 gezeigten Haltedome 24 eingreifen.Again 2 can be easily removed, the blow-out adapter 27 accommodated in the accommodation bay 23 also stretches over the corner E, taking up surface portions of the back and the side of the housing 90 of the dry vacuum cleaner 100 . The blow-out adapter 27 is held securely within the receiving bay 23 via two clamping pins 26', which are inserted in the in 1 Retaining dome 24 shown engage.

Fig. 3 zeigt den Trockensauger 100, wobei in der Aufnahmebucht 23 (hier verdeckt) des Luftausblassystems 50 ein Luftfiltereinsatz 25 aufgenommen ist. Im Gegensatz zu dem in Fig. 2 gezeigten Ausblasadapter 27 ist der Luftfiltereinsatz 25 in Fig. 3 frei von einem etwaigen Auslassfitting. Mit anderen Worten soll an den Luftfiltereinsatz 25 kein Blasschlauch oder dgl. angeschlossen werden. Vielmehr tritt die vom Trockensauger eingesaugte Saugluft SL als Abluft AL aus dem Luftfiltereinsatz 25 zur Umgebung U hinaus. Dies geschieht durch eine Anzahl von Filteröffnungen 24', die durch einen Rahmen 24 des Luftfiltereinsatzes 25 definiert werden. 3 shows the dry vacuum cleaner 100, with an air filter insert 25 being accommodated in the accommodation bay 23 (covered here) of the air blow-out system 50. In contrast to the in 2 The blow-out adapter 27 shown is the air filter insert 25 in 3 free of any outlet fitting. In other words, no blower hose or the like should be connected to the air filter insert 25 . Rather, the suction air SL sucked in by the dry vacuum cleaner exits the air filter insert 25 to the environment U as exhaust air AL. This takes place through a number of filter openings 24 ′, which are defined by a frame 24 of the air filter insert 25 .

Wie der Fig. 3 entnommen werden kann, sitzt der Rahmen 24 samt der hinter den Filteröffnungen 24' erkennbaren Filtermatte über Eck E des Gehäuses 90. Wie ebenfalls der Fig. 3 entnommen werden kann, befinden sich dabei sowohl Filteröffnungen 24' auf der Seite als auch auf der Rückseite des Gehäuses 90, wodurch ein vergleichsweise großer Ausströmquerschnitt für Abluft AL bereitgestellt wird. Auch hier ist gut zu erkennen, dass sich die Aufnahmebucht 23 und der passgenau darin aufgenommene Luftfiltereinsatz 25 über wenigstens 25% der Gesamthöhe GH des Gehäuses 90 erstreckt. Über einen Klippverschluss 22 wird der Luftfiltereinsatz 25 samt Rahmen 24 am Gehäuse 90 befestigt.Again 3 can be removed, the frame 24 sits together with the filter mat behind the filter openings 24' which can be seen over the corner E of the housing 90 3 can be removed, there are both filter openings 24 'on the side and on the back of the housing 90, whereby a comparatively large outflow cross-section for exhaust air AL is provided. Here, too, it is easy to see that the receiving bay 23 and the air filter insert 25 accommodated in it with a precise fit overlap at least 25% of the overall height GH of the housing 90 extends. The air filter insert 25 together with the frame 24 is fastened to the housing 90 via a clip fastener 22 .

Fig. 4 zeigt schließlich eine ... Rückansicht des Trockensaugers 100. Gut zu erkennen ist, dass der Luftfiltereinsatz 25 nebst Rahmen 24 und Filteröffnungen 24' über Eck E ausgebildet ist. Mit anderen Worten strömt Abluft AL nach hinten (aus der Bildebene heraus in Fig. 4) sowie zur Seite (nach links in Fig. 4) aus dem Filtereinsatz 25 heraus. Die über zwei Gehäusewände verteilten Filteröffnungen 24' bieten in ihrer Summe einen vergleichsweise großen Ausströmquerschnitt für die Abluft AL. Somit wird wie erwünscht eine Strömungsgeschwindigkeit der Abluft AL reduziert. Dadurch, dass Strömungsmengen der Abluft AL sowohl aus der Rückseite als auch aus der Seite (von der Rückseite verschiedene Seite) ausströmt, wird ein unangenehmes Anblasen von Benutzern in der Umgebung des Trockensaugers deutlich vermindert. 4 Finally, FIG. In other words, exhaust air AL flows backwards (out of the image plane into 4 ) and to the side (to the left in 4 ) out of the filter insert 25. The total of the filter openings 24' distributed over two housing walls offer a comparatively large outflow cross section for the exhaust air AL. Thus, a flow speed of the exhaust air AL is reduced as desired. Due to the fact that flow quantities of the exhaust air AL flow out both from the rear and from the side (side different from the rear), an unpleasant blowing on of users in the vicinity of the dry vacuum cleaner is significantly reduced.

Wie der Fig. 4 entnommen werden kann, schmiegt sich die Aufnahmebucht 23 an die am Gehäuse 90 vorgesehene Akkubucht 80 an, wodurch eine besonders kompakte Bauart des Trockensaugers 100 gewährleistet wird.Again 4 can be removed, the receiving bay 23 nestles against the battery bay 80 provided on the housing 90, as a result of which a particularly compact design of the dry vacuum cleaner 100 is ensured.

BezugszeichenlisteReference List

1010
Einlassfittinginlet fitting
2020
Luftauslassair outlet
2222
Klippverschlussclip closure
2323
Aufnahmebuchtintake bay
2424
RahmenFrame
24'24'
Filteröffnungenfilter openings
2525
Luftfiltereinsatzair filter insert
2626
Haltedomretaining dome
26`26`
Klemmstifteclamp pins
2727
Ausblasadapterexhaust adapter
2828
Anschlagattack
28'28'
Gegenanschlagcounterattack
2929
Auslassfittingoutlet fitting
29'29'
Schlauchendehose end
5050
Luftauslasssystemair outlet system
8080
Akkubuchtbattery bay
9090
GehäuseHousing
100100
Trockensaugerdry vacuum cleaner
210210
Saugschlauchsuction hose
290290
Blasschlauchblow hose
ALAL
Abluftexhaust air
EE
Ecke des Gehäusescorner of the case
GHGH
Gesamthöhe des Gehäusesoverall height of the case
SLSL
Saugluftsuction air
Uu
UmgebungVicinity

Claims (9)

  1. Air outlet system (50) for a portable dry vacuum cleaner (100), via which intake air (SL) sucked in by the dry vacuum cleaner (100) can be expelled into the surroundings (U) as exhaust air (AL),
    characterized in that the air outlet system (50) has an accommodation bay (23), which is to be arranged in a housing (90) of the dry vacuum cleaner (100), wherein the accommodation bay (23) is provided for accommodating a modular constituent part of the air outlet system (50) and wherein the modular constituent part of the air outlet system (50) is formed by an outlet adapter (27) having an outlet fitting (29) for the connection of a blower hose (290) or by an air filter cartridge (25) without such an outlet fitting (29).
  2. Air outlet system (50) according to Claim 1,
    characterized in that the accommodation bay (23) forms a diffuser.
  3. Air outlet system (50) according to Claim 1 or 2,
    characterized in that at least one retention dome (24) for fastening the outlet adapter (27) is provided in the accommodation bay (23).
  4. Air outlet system (50) according to one of the preceding claims,
    characterized in that the air filter cartridge (25) has a frame (24) having a plurality of filter openings (24').
  5. Dry vacuum cleaner (100) having an air outlet system (50) according to any of the preceding claims, wherein the accommodation bay of the air outlet system (50) is arranged in the housing (90) of the dry vacuum cleaner (100), and the dry vacuum cleaner (100) furthermore has an inlet fitting (10), which is designed for the connection of a suction hose (210), which is arranged on the housing and via which the intake air (SL) is sucked in during operation, wherein the accommodation bay (23) extends across a corner (E) of the housing (90).
  6. Dry vacuum cleaner (100) according to Claim 5,
    characterized in that the housing (90) of the dry vacuum cleaner (100) is of substantially cuboidal design.
  7. Dry vacuum cleaner (100) according to Claim 5 or 6,
    characterized in that the accommodation bay (23) extends at least over 25 percent of the total height (GH) of the housing (90).
  8. Dry vacuum cleaner (100) according to one of Claims 5 to 7,
    characterized in that the inlet fitting (10) and the accommodation bay (23) are situated on opposite sides of the housing (90).
  9. Dry vacuum cleaner (100) according to one of Claims 5 to 8,
    characterized in that the dry vacuum cleaner (100) is of battery-operated design and/or of portable design with a weight of less than 10 kilograms.
EP19719851.8A 2018-05-09 2019-04-24 Air ejector system for a portable dry vacuum cleaning unit Active EP3790437B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18171424.7A EP3566627A1 (en) 2018-05-09 2018-05-09 Air ejector system for a portable dry vacuum cleaning unit
PCT/EP2019/060509 WO2019214945A1 (en) 2018-05-09 2019-04-24 Air outlet system for a portable dry vacuum cleaner

Publications (2)

Publication Number Publication Date
EP3790437A1 EP3790437A1 (en) 2021-03-17
EP3790437B1 true EP3790437B1 (en) 2023-07-12

Family

ID=62200248

Family Applications (2)

Application Number Title Priority Date Filing Date
EP18171424.7A Withdrawn EP3566627A1 (en) 2018-05-09 2018-05-09 Air ejector system for a portable dry vacuum cleaning unit
EP19719851.8A Active EP3790437B1 (en) 2018-05-09 2019-04-24 Air ejector system for a portable dry vacuum cleaning unit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP18171424.7A Withdrawn EP3566627A1 (en) 2018-05-09 2018-05-09 Air ejector system for a portable dry vacuum cleaning unit

Country Status (5)

Country Link
US (1) US11925302B2 (en)
EP (2) EP3566627A1 (en)
JP (1) JP2021520269A (en)
CN (1) CN111918590B (en)
WO (1) WO2019214945A1 (en)

Family Cites Families (18)

* Cited by examiner, † Cited by third party
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JPH01310624A (en) * 1988-06-08 1989-12-14 Tokyo Electric Co Ltd Electric cleaner
US5606769A (en) * 1994-10-31 1997-03-04 Emerson Electric Co. Wet/dry utility vacuum cleaner with detachable blower
US6125501A (en) * 1999-01-08 2000-10-03 Yip; Chung Lun Vacuum cleaner using a sheet filter
KR100433404B1 (en) * 2002-02-04 2004-05-31 삼성광주전자 주식회사 Upright type vacuum cleaner
KR100445803B1 (en) * 2002-02-05 2004-08-25 삼성광주전자 주식회사 Air exhaust structure of an upright-type vacuum cleaner
JP2003275150A (en) 2002-03-26 2003-09-30 Toshiba Tec Corp Vacuum cleaner
CN1644150A (en) * 2003-02-26 2005-07-27 布莱克和戴克公司 Hand-held vacuum cleaner with filter indicator
US7418763B2 (en) * 2003-02-26 2008-09-02 Black & Decker Inc. Hand vacuum with filter indicator
US7712182B2 (en) * 2003-07-25 2010-05-11 Milwaukee Electric Tool Corporation Air flow-producing device, such as a vacuum cleaner or a blower
GB0402847D0 (en) * 2004-02-10 2004-03-17 Black & Decker Inc Filter assembly for vacuum cleaner and vacuum cleaner incorporating such assembly
US20070028413A1 (en) * 2005-08-03 2007-02-08 Fischer Richard J Upright vacuum cleaner with removable air path cover for canister assembly
KR100730944B1 (en) * 2005-08-18 2007-06-22 주식회사 대우일렉트로닉스 Exhaust structure of vacuum cleaner
CN103565350A (en) * 2012-07-19 2014-02-12 乐金电子(天津)电器有限公司 Horizontal type vacuum cleaner provided with dust blowing device
JP2014097117A (en) 2012-11-13 2014-05-29 Makita Corp Dust collector
AU2016102017A4 (en) * 2015-12-04 2017-01-12 Bissell Inc. Cyclone module for vacuum cleaner
WO2017124628A1 (en) * 2016-01-20 2017-07-27 江苏美的清洁电器股份有限公司 Hand-held vacuum cleaner

Also Published As

Publication number Publication date
EP3790437A1 (en) 2021-03-17
US20210161337A1 (en) 2021-06-03
CN111918590A (en) 2020-11-10
WO2019214945A1 (en) 2019-11-14
EP3566627A1 (en) 2019-11-13
US11925302B2 (en) 2024-03-12
JP2021520269A (en) 2021-08-19
CN111918590B (en) 2021-09-07

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