EP3790437A1 - Air outlet system for a portable dry vacuum cleaner - Google Patents

Air outlet system for a portable dry vacuum cleaner

Info

Publication number
EP3790437A1
EP3790437A1 EP19719851.8A EP19719851A EP3790437A1 EP 3790437 A1 EP3790437 A1 EP 3790437A1 EP 19719851 A EP19719851 A EP 19719851A EP 3790437 A1 EP3790437 A1 EP 3790437A1
Authority
EP
European Patent Office
Prior art keywords
dry vacuum
air
vacuum cleaner
housing
receiving bay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19719851.8A
Other languages
German (de)
French (fr)
Other versions
EP3790437B1 (en
Inventor
Sonya Wörz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hilti AG
Original Assignee
Hilti AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hilti AG filed Critical Hilti AG
Publication of EP3790437A1 publication Critical patent/EP3790437A1/en
Application granted granted Critical
Publication of EP3790437B1 publication Critical patent/EP3790437B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • 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 exhaust system for a dry vacuum cleaner.
  • An air blow-out system can be used to blow out suction air sucked in from the dry vacuum as exhaust air to the surroundings.
  • the invention also relates to a dry vacuum cleaner with such a Heilausblassystem. Air exhaust systems or dry vacuum cleaner of the type mentioned are basically known from the prior art.
  • the Luftausblassystem has to be arranged in a housing of the dry vacuum receiving bay in which either an air filter cartridge or a Ausblasadapter is receivable, wherein the Ausblasadapter has a Auslassfitting for connection of a blast hose and the air filter cartridge is free of such an outlet fitting.
  • the air exhaust system provides the basis for a dry vacuum cleaner with which - in a suction operation - suction air can be sucked in via an inlet fitting and this suction air can be blown out as exhaust air to the environment.
  • a dry vacuum cleaner with which - in a suction operation - suction air can be sucked in via an inlet fitting and this suction air can be blown out as exhaust air to the environment.
  • the exhaust air is filtered out to the surroundings through the air filter insert.
  • the blow-out adapter in the receiving bay is assumed, a blow hose for a blowing operation of the dry vacuum can be connected to its outlet fitting. Intake air flowing in via the inlet fitting thus flows as exhaust air through the outlet fitting and any blast hose connected thereto to the environment.
  • the air exhaust system according to the invention provides the basis for a dry vacuum cleaner of particularly compact design.
  • Such a dry vacuum is equipped with a Heilausblassystem invention, wherein the receiving bay of Heilausblassystems is disposed in the housing of the dry vacuum, and the dry vacuum further comprises a trained for connection of a suction inlet fitting, which is arranged on the housing and via which the suction air is sucked in operation, wherein the receiving bay extends beyond a corner of the housing away.
  • the dry vacuum according to the invention has a receiving bay which extends over a corner of the housing. This positioning over corner space can be saved on the housing of the dry vacuum or an outlet with a comparatively high flow cross-section are possible.
  • the receiving bay is designed as a diffuser.
  • At least one holding dome may be provided in the receiving bay, to which the discharge adapter may be attached.
  • the blowout adapter may have one or two male or female pins by means of which the blowout adapter may be attached to the retaining dome or the retaining 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, it is possible to achieve a linearization of the otherwise turbulent air flowing out of the receiving bay which is designed as a diffuser.
  • the dry vacuum preferably has a substantially cuboidal housing. It has proven 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 at the common corner pending surface portions of the housing, an approximately equal cross-sectional area. In other words, the receiving bay can be formed symmetrically over the corner of the substantially parallelepiped-shaped housing of the dry vacuum.
  • the dry vacuum cleaner is battery operated.
  • the dry vacuum is designed exclusively battery operated.
  • the dry vacuum cleaner is designed to be portable with a weight of less than 10 kg. This preferably includes the weight of an intended for the operation of the dry vacuum accumulator (preferably 22 volt battery).
  • Fig. 1 shows a preferred embodiment of a portable dry vacuum
  • FIG. 2 shows the embodiment of FIG. 1, wherein in the receiving bay a
  • FIG. 3 shows the embodiment of FIG. 1, wherein in the receiving bay a
  • Air filter is included;
  • Fig. 4 shows the embodiment of Fig. 3 in another view.
  • FIG. 1 A preferred embodiment of a dry vacuum cleaner 100 according to the invention is shown in FIG.
  • the dry vacuum cleaner 100 of FIG. 1 is designed as a compact and portable vacuum cleaner, which in the present case is exclusively battery-operated.
  • the Akkubucht 80 shown in Fig. 1 serves to receive a supply battery, not shown here, which preferably has a voltage of 22 volts. 1 shows a rear perspective view of the dry vacuum cleaner 100.
  • the dry vacuum cleaner 100 has a housing 90, which is formed cuboid in the present embodiment shown.
  • an inlet fitting 10 which serves to connect a suction hose 210, which is shown here only schematically.
  • the inlet fitting 10 is located on the front side of the dry vacuum 100 and accordingly can only be seen in sections in FIG. 1.
  • an air blowing system 50 of the dry vacuum 100 is arranged on the opposite side of the housing 90 from the inlet fitting 10, i. in the foreground of Fig. 1, an air blowing system 50 of the dry vacuum 100 is arranged.
  • the Heilausblassystem 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 beyond the corner E of the housing 90. In this case, the receiving bay 23 extends to at least 25% of the total height GH of the housing 90th
  • suction air SL is sucked in from the surroundings U as suction air SL into the inlet fitting 10 or the suction hose 210 connected to the inlet fitting 10.
  • This suction air SL carries dirt particles which are deposited inside the dry vacuum 100.
  • a filter not shown within the dry vacuum 100 is responsible.
  • the sucked suction air SL is blown out as exhaust air AL to the environment U. This is done by the Heilausblassystem 50, more precisely through the receiving bay 23 shown here.
  • the receiving bay 23 is formed as a diffuser, so that the exiting exhaust air AL is already experiencing a reduction in their speed.
  • the air exhaust system 50 has two modular components, namely a blowout adapter 27 (see Fig. 2) and an air filter cartridge 25 (see Figures 3 and 4).
  • a blowout adapter 27 see Fig. 2
  • an air filter cartridge 25 see Figures 3 and 4
  • the receiving bay 23 is well recognizable without recorded therein inserts.
  • a holding dome 24 located within a lumen of the receiving bay 23 serves to secure the discharge 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 is visible here.
  • FIG. 2 now shows the dry vacuum cleaner 100, wherein a blow-out adapter 27 is accommodated in the air outlet system 50.
  • the blow-out adapter 27 has an outlet fitting 29 for connecting a blow hose 290, which is shown schematically here.
  • the suction air SL sucked in via the inlet fitting 10 now exits via the outlet fitting 29 or via the blast hose 290 to be connected to the blow-off adapter 27 to the environment U.
  • blow-out adapter 27 is arranged in an exact fit in the receiving bay 23.
  • the blow-out adapter 27 has a cylindrical opening with a stepped stop 28. In this opening, a hose end 29 'of the blast hose 290 can be inserted accurately, with the counter-stop 28' on the stop 28 of the blow-out adapter 27 comes to a stop.
  • the inner opening of the Ausblasadapters 27 is cylindrical corresponding to the hose end 29 '.
  • the discharge adapter 27 accommodated in the receiving bay 23 also extends beyond the corner E, occupying surface portions of the rear side as well as the side of the housing 90 of the dry vacuum 100. Securely held within the receiving bay 23, the discharge adapter 27 via two clamping pins 26 ', which engage in the holding domes 24 shown in Fig. 1.
  • FIG. 3 shows the dry vacuum cleaner 100, an air filter element 25 being accommodated in the receiving bay 23 (here concealed) of the air outlet system 50.
  • the air filter insert 25 in FIG. 3 is free of any outlet fitting. In other words, no blast hose or the like should be connected to the air filter insert 25. Rather, the sucked in by the dry vacuum suction air SL occurs as exhaust air AL from the air filter cartridge 25 to the environment U addition. This is done by a number of filter openings 24 ', which are defined by a frame 24 of the air filter cartridge 25.
  • both filter openings 24' are located on the side also on the back of the housing 90, whereby a comparatively large Ausströmquerites for exhaust air AL is provided.
  • About a clip closure 22 of the air filter cartridge 25 is attached together with frame 24 on the housing 90.
  • FIG. 4 shows a rear view of the dry vacuum cleaner 100.
  • the air filter cartridge 25, together with the frame 24 and filter openings 24 ' is formed above the corner E.
  • exhaust air AL flows out to the rear (out of the image plane in FIG. 4) and to the side (to the left in FIG. 4) out of the filter cartridge 25.
  • the distributed over two housing walls filter openings 24 'offer in their sum a comparatively large Ausströmquerites for the exhaust air AL.
  • a flow velocity of the exhaust air AL is reduced.
  • unpleasant blowing of users in the vicinity of the dry vacuum is significantly reduced.
  • the receiving bay 23 nestles against the housing 90 provided on the battery bay 80, whereby a particularly compact design of T rockensaugers 100 is guaranteed.

Landscapes

  • Filtering Of Dispersed Particles In Gases (AREA)
  • Electric Suction Cleaners (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)

Abstract

The invention relates to an air outlet system for a portable dry vacuum cleaner, via which the intake air sucked in by the dry vacuum cleaner can be expelled into the environment as exhaust air, wherein the air outlet system has an accommodation bay which is to be disposed in a housing of the dry vacuum cleaner and in which optionally an air cleaner cartridge or an exhaust adapter may be accommodated, with the exhaust adapter having an exhaust fitting onto which a blower hose connects and the air cleaner cartridge being free from an outlet fitting of this kind.

Description

Luftausblassystem für einen tragbaren Trockensauger  Air exhaust system for a portable dry vacuum cleaner
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 exhaust system for a dry vacuum cleaner. An air blow-out system can be used to blow out suction air sucked in from the dry vacuum as exhaust air to the surroundings. The invention also relates to a dry vacuum cleaner with such a Luftausblassystem. Air exhaust systems or dry vacuum cleaner of the type mentioned are basically known from the prior art.
Es ist Aufgabe der vorliegenden Erfindung, ein Luftausblassystem bereitzustellen, das einen kompakten und flexiblen Aufbau eines Trockensauger begünstigt.  It is an object of the present invention to provide a Luftausblassystem that favors 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 Luftausblassystem has to be arranged in a housing of the dry vacuum receiving bay in which either an air filter cartridge or a Ausblasadapter is receivable, wherein the Ausblasadapter has a Auslassfitting for connection of a blast hose and the air filter cartridge is free of 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 exhaust system according to the invention provides the basis for a dry vacuum cleaner with which - in a suction operation - suction air can be sucked in via an inlet fitting and this suction air can be blown out as exhaust air to the environment. If an air filter element is accommodated in the receiving bay provided according to the invention, the exhaust air is filtered out to the surroundings through the air filter insert. However, if, instead of the air filter insert, the blow-out adapter in the receiving bay is assumed, a blow hose for a blowing operation of the dry vacuum can be connected to its outlet fitting. Intake air flowing in via the inlet fitting thus flows as exhaust air through the outlet fitting and any blast hose connected thereto to the environment.
Das erfindungsgemäße Luftausblassystem schafft die Grundlage für einen Trockensauger besonders kompakter Bauart.  The air exhaust system according to the invention provides 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 is equipped with a Luftausblassystem invention, wherein the receiving bay of Luftausblassystems is disposed in the housing of the dry vacuum, and the dry vacuum further comprises a trained for connection of a suction inlet fitting, which is arranged on the housing and via which the suction air is sucked in operation, wherein the receiving bay extends beyond a corner of the housing away.
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 has been recognized that known from the prior art dry vacuum can have, for example at its rear end of the housing an air outlet, which is suitable for insertion of a blast hose. As a result, the dry vacuum can be used as a so-called "blower". It has been recognized as problematic that the smaller the cross-sectional area of the blow-off opening, the higher the blow-off speed of the exhaust air and thus an undesirable dust swirling of ambient dust. Likewise, users or people in the vicinity of such dry vacuum cleaners can be unpleasantly "blown". The high blow-off speed described is a problem, in particular 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.  As a departure from this, the dry vacuum according to the invention has a receiving bay which extends over a corner of the housing. This positioning over corner space can be saved on the housing of the dry vacuum or an outlet with a comparatively high flow cross-section are possible.
Es hat sich als vorteilhaft herausgestellt, wenn der Luftfiltereinsatz und/oder der Ausblasadapter modularer Teil des Luftausblassystems sind.  It has been found to be advantageous if the air filter cartridge and / or the blowout adapter are a modular part of the air blower 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. Thus, already a reduction of the outflow velocity of the exhaust air can 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 holding dome may be provided in the receiving bay, to which the discharge adapter may be attached. Preferably, two retaining domes are provided within a volume of the receiving bay. Accordingly, the blowout adapter may have one or two male or female pins by means of which the blowout adapter may be attached to the retaining dome or the retaining 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 proven to be advantageous if the air filter insert has a frame with a plurality of filter openings. As a result, it is possible to achieve a linearization of the otherwise turbulent air flowing out of the receiving bay which is designed as a diffuser.
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 preferably has a substantially cuboidal housing. It has proven 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 at the common corner pending surface portions of the housing, an approximately equal cross-sectional area. In other words, the receiving bay can be formed symmetrically over the corner of the substantially parallelepiped-shaped housing of the dry vacuum.
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 and the receiving bay are located 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 of the dry vacuum cleaner is battery operated. Particularly preferably, the dry vacuum is designed exclusively battery operated. In a further preferred embodiment, the dry vacuum cleaner is designed to be portable with a weight of less than 10 kg. This preferably includes the weight of an intended for the operation of the dry vacuum accumulator (preferably 22 volt battery).
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 will become apparent from the following description of the figures. In the figures, various embodiments of the present invention are shown. 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 meaningful further combinations.
In den Figuren sind gleiche und gleichartige Komponenten mit gleichen Bezugszeichen beziffert. Es zeigen:  In the figures, identical and similar components are numbered with the same reference numerals. Show it:
Fig. 1 ein bevorzugtes Ausführungsbeispiel eines tragbaren Trockensaugers mit  Fig. 1 shows a preferred embodiment of a portable dry vacuum with
Luftausblassystem;  Luftausblassystem;
Fig. 2 das Ausführungsbeispiel der Fig. 1 , wobei in der Aufnahmebucht ein Fig. 2 shows the embodiment of FIG. 1, wherein in the receiving bay a
Ausblasadapter aufgenommen ist;  Blow-out adapter is added;
Fig. 3 das Ausführungsbeispiel der Fig. 1 , wobei in der Aufnahmebucht ein  Fig. 3 shows the embodiment of FIG. 1, wherein in the receiving bay a
Luftfiltereinsatz aufgenommen ist; und  Air filter is included; and
Fig. 4 das Ausführungsbeispiel der Fig. 3 in einer anderen Ansicht. Fig. 4 shows the embodiment of Fig. 3 in another view.
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 shown in FIG. The dry vacuum cleaner 100 of FIG. 1 is designed as a compact and portable vacuum cleaner, which in the present case is exclusively battery-operated. The Akkubucht 80 shown in Fig. 1 serves to receive a supply battery, not shown here, which preferably has a voltage of 22 volts. 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 formed cuboid in the present embodiment shown. Arranged on the housing 90 is an inlet fitting 10, which serves to connect a suction hose 210, which is shown here only schematically. The inlet fitting 10 is located on the front side of the dry vacuum 100 and accordingly can only be seen in sections in FIG. 1. On the opposite side of the housing 90 from the inlet fitting 10, i. in the foreground of Fig. 1, an air blowing system 50 of the dry vacuum 100 is arranged. The Luftausblassystem 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 beyond the corner E of the housing 90. In this case, the receiving bay 23 extends to at least 25% of the total height GH of the housing 90th
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 operation of the dry vacuum cleaner 100, air is sucked in from the surroundings U as suction air SL into the inlet fitting 10 or the suction hose 210 connected to the inlet fitting 10. This suction air SL carries dirt particles which are deposited inside the dry vacuum 100. For this purpose, a filter not shown within the dry vacuum 100 is responsible. Subsequently, the sucked suction air SL is blown out as exhaust air AL to the environment U. This is done by the Luftausblassystem 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.  As can be seen from Fig. 1, the receiving bay 23 is formed as a diffuser, so that the exiting exhaust air AL is already experiencing a reduction in their 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 exhaust system 50 has two modular components, namely a blowout adapter 27 (see Fig. 2) and an air filter cartridge 25 (see Figures 3 and 4). In Fig. 1, the receiving bay 23 is well recognizable without recorded therein inserts. A holding dome 24 located within a lumen of the receiving bay 23 serves to secure the discharge 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 is visible 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, wherein a blow-out adapter 27 is accommodated in the air outlet system 50. The blow-out adapter 27 has an outlet fitting 29 for connecting a blow hose 290, which is shown schematically here. The suction air SL sucked in via the inlet fitting 10 now exits via the outlet fitting 29 or via the blast hose 290 to be connected to the blow-off adapter 27 to the environment U.
Wie der Fig. 2 entnommen werden kann, ist der Ausblasadapter 27 passgenau in der Aufnahmebucht 23 angeordnet.  As can be seen from FIG. 2, the blow-out adapter 27 is arranged in an exact 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. In this opening, a hose end 29 'of the blast hose 290 can be inserted accurately, with the counter-stop 28' on the stop 28 of the blow-out adapter 27 comes to a stop. The inner opening of the Ausblasadapters 27 is cylindrical corresponding to the hose end 29 '. Alternatively, a conical connection between blow-out adapter 27 and hose end 29 'can be realized.
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.  As can be well seen in FIG. 2, the discharge adapter 27 accommodated in the receiving bay 23 also extends beyond the corner E, occupying surface portions of the rear side as well as the side of the housing 90 of the dry vacuum 100. Securely held within the receiving bay 23, the discharge adapter 27 via two clamping pins 26 ', which engage in the holding domes 24 shown in Fig. 1.
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. FIG. 3 shows the dry vacuum cleaner 100, an air filter element 25 being accommodated in the receiving bay 23 (here concealed) of the air outlet system 50. In contrast to the blow-off adapter 27 shown in FIG. 2, the air filter insert 25 in FIG. 3 is free of any outlet fitting. In other words, no blast hose or the like should be connected to the air filter insert 25. Rather, the sucked in by the dry vacuum suction air SL occurs as exhaust air AL from the air filter cartridge 25 to the environment U addition. This is done by a number of filter openings 24 ', which are defined by a frame 24 of the air filter cartridge 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. As can be seen in FIG. 3, the frame 24, together with the filter mat visible behind the filter openings 24 ', sits over the corner E of the housing 90. As can also be seen in FIG. 3, both filter openings 24' are located on the side also on the back of the housing 90, whereby a comparatively large Ausströmquerschnitt for exhaust air AL is provided. Again, it is easy to see that the receiving bay 23 and the precisely recorded therein air filter element 25 via at least 25% of the total height GH of the housing 90 extends. About a clip closure 22 of the air filter cartridge 25 is attached together with frame 24 on the housing 90.
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.  Finally, FIG. 4 shows a rear view of the dry vacuum cleaner 100. It can easily be seen that the air filter cartridge 25, together with the frame 24 and filter openings 24 ', is formed above the corner E. In other words, exhaust air AL flows out to the rear (out of the image plane in FIG. 4) and to the side (to the left in FIG. 4) out of the filter cartridge 25. The distributed over two housing walls filter openings 24 'offer in their sum a comparatively large Ausströmquerschnitt for the exhaust air AL. Thus, as desired, a flow velocity of the exhaust air AL is reduced. By discharging flow rates of the exhaust air AL both from the rear side and the side (side different from the rear side), unpleasant blowing of users in the vicinity of the dry vacuum 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 T rockensaugers 100 gewährleistet wird. As can be seen from Fig. 4, the receiving bay 23 nestles against the housing 90 provided on the battery bay 80, whereby a particularly compact design of T rockensaugers 100 is guaranteed.
Bezuaszeichenliste Bezuaszeichenliste
10 Einlassfitting  10 inlet fitting
20 Luftauslass  20 air outlet
22 Klippverschluss  22 clip closure
23 Aufnahmebucht  23 recording bay
24 Rahmen  24 frames
24‘ Filteröffnungen  24 'filter openings
25 Luftfiltereinsatz  25 air filter element
26 Haltedom  26 Haltedom
26‘ Klemmstifte  26 'clamping pins
27 Ausblasadapter  27 exhaust adapter
28 Anschlag  28 stop
28‘ Gegenanschlag  28 'counter-attack
29 Auslassfitting  29 outlet fitting
29‘ Schlauchende  29 'hose end
50 Luftauslasssystem  50 air outlet system
80 Akkubucht  80 battery bay
90 Gehäuse  90 housing
100 Trockensauger  100 dry vacuums
210 Saugschlauch  210 suction hose
290 Blasschlauch  290 blown hose
AL Abluft AL exhaust air
E Ecke des Gehäuses  E corner of the housing
GH Gesamthöhe des Gehäuses  GH Total height of the housing
SL Saugluft  SL suction air
U Umgebung  U environment

Claims

Patentansprüche claims
1 . Luftausblassystem (50) für einen tragbaren Trockensauger (100), über das vom Trockensauger (100) eingesaugte Saugluft (SL) als Abluft (AL) zur Umgebung (U) ausgeblasen werden kann, 1 . Air blowing system (50) for a portable dry vacuum cleaner (100), via which suction air sucked in by the dry vacuum cleaner (100) can be blown out as exhaust air (AL) to the environment (U),
dadurch gekennzeichnet, dass das Luftauslasssystem (50) eine in einem Gehäuse (90) des Trockensaugers (100) anzuordnende Aufnahmebucht (23) aufweist, in der wahlweise ein Luftfiltereinsatz (25) oder ein Ausblasadapter (27) aufnehmbar ist, wobei der Ausblasadapter (27) ein Auslassfitting (29) zum Anschluss eines Blasschlauchs (290) aufweist und der Luftfiltereinsatz (25) frei von einem solchen Auslassfitting ist.  characterized in that the air outlet system (50) has a receiving bay (23) to be arranged in a housing (90) of the dry vacuum cleaner (100) in which either an air filter insert (25) or a blowout adapter (27) can be accommodated, the blower adapter (27 ) has an outlet fitting (29) for connecting a blast hose (290) and the air filter cartridge (25) is free from such outlet fitting.
2. Luftausblassystem (50) nach Anspruch 1 , 2. Air blowing system (50) according to claim 1,
dadurch gekennzeichnet, dass der Luftfiltereinsatz (25) und/oder der Ausblasadapter (27) modularer Teil des Luftausblassystems (50) sind.  characterized in that the air filter cartridge (25) and / or the blowout adapter (27) are modular parts of the air blower system (50).
3. Luftausblassystem (50) nach Anspruch 1 oder 2, 3. air blowing system (50) according to claim 1 or 2,
dadurch gekennzeichnet, dass die Aufnahmebucht (23) einen Diffusor bildet.  characterized in that the receiving bay (23) forms a diffuser.
4. Luftausblassystem (50) nach einem der vorangehenden Ansprüche, 4. air blowing system (50) according to any one of the preceding claims,
dadurch gekennzeichnet, dass in der Aufnahmebucht (23) wenigstens ein Haltedom (24) zum Befestigen des Ausblasadapters (27) vorgesehen ist.  characterized in that in the receiving bay (23) at least one retaining dome (24) for fixing the blow-out adapter (27) is provided.
5. Luftausblassystem (50) nach einem der vorangehenden Ansprüche, 5. air blowing system (50) according to any one of the preceding claims,
dadurch gekennzeichnet, dass der Luftfiltereinsatz (25) einen Rahmen (24) mit einer Mehrzahl von Filteröffnungen (24‘) aufweist.  characterized in that the air filter cartridge (25) has a frame (24) with a plurality of filter openings (24 ').
6. Trockensauger (100) mit einem Luftausblassystem (50) nach einem der vorangehenden Ansprüche, wobei die Aufnahmebucht des Luftausblassystems (50) in dem Gehäuse (90) des Trockensaugers (100) angeordnet ist, und der Trockensauger (100) weiterhin ein zum Anschluss eines Saugschlauchs (210) ausgebildetes Einlassfitting (10) aufweist, das am Gehäuse angeordnet ist und über das die Saugluft (SL) im Betrieb eingesaugt wird, wobei sich die Aufnahmebucht (23) über eine Ecke (E) des Gehäuses (90) hinweg erstreckt. 6. dry vacuum cleaner (100) with an air blowing system (50) according to any one of the preceding claims, wherein the receiving bay of Luftausblassystems (50) in the housing (90) of the Trockensaugers (100) is arranged, and the Trockensauger (100) further for connection a suction fitting (210) formed inlet fitting (10) which is arranged on the housing and through which the suction air (SL) is sucked in operation, wherein the receiving bay (23) over a corner (E) of the housing (90) extends away ,
7. Trockensauger (100) nach Anspruch 6, 7. dry vacuum cleaner (100) according to claim 6,
dadurch gekennzeichnet, dass das Gehäuse (90) des Trockensaugers (100) im Wesentlichen quaderförmig ausgebildet ist.  characterized in that the housing (90) of the Trockensaugers (100) is formed substantially cuboid.
8. Trockensauger (100) nach Anspruch 6 oder 7, 8. dry vacuum cleaner (100) according to claim 6 or 7,
dadurch gekennzeichnet, dass sich die Aufnahmebucht (23) wenigstens über 25 Prozent der Gesamthöhe (GH) des Gehäuses (90) erstreckt.  characterized in that the receiving bay (23) extends at least over 25 percent of the total height (GH) of the housing (90).
9. Trockensauger (100) nach einem der Ansprüche 6 bis 8, 9. dry vacuum cleaner (100) according to any one of claims 6 to 8,
dadurch gekennzeichnet, dass das Einlassfitting (10) und die Aufnahmebucht (23) auf einander gegenüberliegenden Seiten des Gehäuses (90) befindlich sind.  characterized in that the inlet fitting (10) and the receiving bay (23) are located on opposite sides of the housing (90).
10. Trockensauger (100) nach einem der Ansprüche 6 bis 9, 10. dry vacuum cleaner (100) according to any one of claims 6 to 9,
dadurch gekennzeichnet, dass der Trockensauger (100) akkubetrieben ausgebildet und/oder tragbar mit einem Gewicht von weniger als 10 Kilogramm ausgebildet ist.  characterized in that the dry vacuum cleaner (100) is battery-operated and / or portable 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 true EP3790437A1 (en) 2021-03-17
EP3790437B1 EP3790437B1 (en) 2023-07-12

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EP19719851.8A Active EP3790437B1 (en) 2018-05-09 2019-04-24 Air ejector system for a portable dry vacuum cleaning unit

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

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US20210161337A1 (en) 2021-06-03
US11925302B2 (en) 2024-03-12
EP3566627A1 (en) 2019-11-13
WO2019214945A1 (en) 2019-11-14
CN111918590B (en) 2021-09-07
EP3790437B1 (en) 2023-07-12
CN111918590A (en) 2020-11-10

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