EP0740520B1 - Filterless industrial vacuum cleaner operated by compressed gas and suitable for connection to an existing suction and filtering system - Google Patents

Filterless industrial vacuum cleaner operated by compressed gas and suitable for connection to an existing suction and filtering system Download PDF

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Publication number
EP0740520B1
EP0740520B1 EP95905643A EP95905643A EP0740520B1 EP 0740520 B1 EP0740520 B1 EP 0740520B1 EP 95905643 A EP95905643 A EP 95905643A EP 95905643 A EP95905643 A EP 95905643A EP 0740520 B1 EP0740520 B1 EP 0740520B1
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EP
European Patent Office
Prior art keywords
suction
vacuum
propellant
nozzle
tool
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.)
Expired - Lifetime
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EP95905643A
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German (de)
French (fr)
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EP0740520A1 (en
Inventor
Herbert OBERMÜLLER
Ulrich Kethers
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.)
Tet Umwelttechnik Gesellschaft fur Lufttechnische Verfahren Mbh (thermal And Environmental Techniques)
Original Assignee
Tet Umwelttechnik Gesellschaft fur Lufttechnische Verfahren Mbh (thermal And Environmental Techniques)
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Publication of EP0740520A1 publication Critical patent/EP0740520A1/en
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Publication of EP0740520B1 publication Critical patent/EP0740520B1/en
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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
    • A47L5/22—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with rotary fans
    • A47L5/38—Built-in suction cleaner installations, i.e. with fixed tube system to which, at different stations, hoses can be connected
    • 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
    • A47L5/16—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with suction devices other than rotary fans
    • A47L5/18—Structural features of suction cleaners with power-driven air-pumps or air-compressors, e.g. driven by motor vehicle engine vacuum with suction devices other than rotary fans with ejectors, e.g. connected to motor vehicle exhaust
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area

Definitions

  • the invention relates to a device for extracting suction material by means of a propellant gas operated propellant nozzle, which has a suction hose on the suction side with an end suction tool for extracting the suction material and is connected on the pressure side to an exhaust air pipe leading to an exhaust air and filter system.
  • the vacuum cleaner blows off air again, creating air turbulence that can stir up dust.
  • a device of the type mentioned can be found in DE-C-37 17 569.
  • the suction hose In order to extract suction material via the suction tool or a suction hose connected to it, the suction hose either leads to a blower or to a venturi nozzle, in front of which a compressed air line, which can be shut off by a cock to the required extent, extends to supply propellant gas.
  • the present invention is based on the object of designing a device of the type mentioned at the outset in such a way that problem-free handling is ensured, in particular actuation of the driving nozzle is possible directly by operating the suction tool, without additional handles being required.
  • the object is achieved in that means are provided which automatically trigger a function that switches on the driving nozzle when the suction tool is removed from its rest position, and which automatically trigger a function that switches off the driving nozzle when the suction tool is brought into its rest position.
  • the teaching according to the invention provides a compact device for suctioning off suction material, which practically enables one-hand operation: since the driving gas is supplied to the driving nozzle or blocked off only when the suction tool is detected or replaced.
  • no additional units such as valves or blowers are required in order to be able to extract suction material. This in turn means that the device is easy to maintain.
  • a device 20 for suction of suction material by means of a driving nozzle 1 actuated by propellant gas is shown in order to feed the suction material to a suction pipe 9, which can lead to a filter system.
  • the nozzle 1 which is an annular gap nozzle, is connected via a pipe 4 to a suction pipe 20.1, which has the function of a suction tool 20 and has a suction opening 8 at the end.
  • the suction tool 20 or the suction pipe 20.1 with its suction opening 8 can be inserted into a tool holder 7 into which a valve tappet 6 of a valve 5 projects.
  • propellant gas flows via a connection 10.1 to the gap 2 of the nozzle 1 in order to suck off suction material 20 when the suction tool is actuated.
  • the valve 5 is automatically opened when the suction tool 20 is removed from the tool holder 7. Conversely, the valve 5 is closed by pushing back the valve tappet 6 when the suction pipe 20.1 is inserted into the opening 7.1 of the tool holder 7.
  • the pipe 3 leading from the valve 1 to the suction pipe 9 opens into the latter in such a way that the suction material is blown in in the direction of flow during operation.

Landscapes

  • Cleaning In General (AREA)
  • Nozzles For Electric Vacuum Cleaners (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • External Artificial Organs (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Manipulator (AREA)
  • Nozzles (AREA)

Abstract

PCT No. PCT/EP95/00243 Sec. 371 Date Jul. 17, 1996 Sec. 102(e) Date Jul. 17, 1996 PCT Filed Jan. 24, 1995 PCT Pub. No. WO95/19730 PCT Pub. Date Jul. 27, 1995A device for extraction of vacuum-cleaned material comprising a propellant nozzle (1) operated by propellant gas that has on a suction side a vacuum tube (4) with vacuum tool (20) on the end for extraction of vacuum cleaned material and on a discharge side is connected to an extraction pipe (9) leading to a suction and filtering system, wherein means (5,6) to automatically trigger a function switching on said propellant nozzle (1) when said vacuum tool (20) is removed from its rest position and that automatically trigger a function switching off said propellant nozzle (1) when said vacuum tool (20) is inserted in its res position into a mounting (7) into which a plunger (6) of a valve (5) controlling the propellant gas slidably projects.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Absaugen von Sauggut mittels einer durch Treibgas betätigten Treibdüse, die saugseitig einen Saugschlauch mit endseitigem Saugwerkzeug zum Absaugen des Saugguts aufweist und druckseitig mit zu einer Abluft- und Filteranlage führenden Abluftrohrleitung verbunden ist.The invention relates to a device for extracting suction material by means of a propellant gas operated propellant nozzle, which has a suction hose on the suction side with an end suction tool for extracting the suction material and is connected on the pressure side to an exhaust air pipe leading to an exhaust air and filter system.

In Industriebetrieben setzt man zum Staubsaugen meist bewegliche Industriestaubsauger ein. Gelegentlich sind auch stationäre Staubsauger installiert, die meist an einer längeren Saugleitung sitzen und mehrere 'Steckdosen' für Staubsaugwerkzeuge haben. Beide Staubsauger verfügen über eigene Filter, die periodisch gereinigt und erneuert werden müssen. Ein Sauggebläse - auf der Reinluftseite, d.h.nach dem Filter arbeitend - erzeugt den erforderlichen Saugunterdruck und die Absaugmenge.In industrial companies, portable industrial vacuum cleaners are usually used for vacuuming. Occasionally, stationary vacuum cleaners are also installed, which are usually located on a longer suction line and have several 'sockets' for vacuum cleaning tools. Both vacuum cleaners have their own filters, which have to be cleaned and replaced periodically. A suction fan - on the clean air side, i.e. working after the filter - generates the required suction vacuum and the amount of suction.

Nachteile der Industriestaubsauger sind deren limitierte Filterfläche, die zu einem frühen Abreinigen und Wechsel zwingt, der große Aufwand vor Ort, einen Staubsauger zu beschaffen und diesen nach Gebrauch gereinigt wieder weiterzugeben, die Sperrigkeit dieser Geräte und die damit verbundenen Behinderungen.Disadvantages of industrial vacuum cleaners are their limited filter area, which means that they have to be cleaned and replaced early, the great effort on site to get a vacuum cleaner and pass it on again after use, the bulkiness of these devices and the associated disabilities.

Zudem bläst der Staubsauger wieder Luft ab und sorgt so für Luftturbulenzen, die Stäube aufwirbeln können.In addition, the vacuum cleaner blows off air again, creating air turbulence that can stir up dust.

Diese Argumente und die meist geringe Zahl an vorhandenen Geräten in einem Betrieb erklären die oft mangelnde Akzeptanz des Industriestaubsaugers in den Betrieben.These arguments and the usually small number of existing devices in a company explain the often insufficient acceptance of the industrial vacuum cleaner in the company.

Eine Vorrichtung der eingangs genannten Art ist der DE-C-37 17 569 zu entnehmen. Um über das Saugwerkzeug bzw. einem mit diesem verbundenen Saugschlauch Sauggut abzusaugen, führt der Saugschlauch entweder zu einem Gebläse oder zu einer Venturi-Düse, vor der eine über einen Hahn im erforderlichen Umfang absperrbare Druckluftleitung zum Zuführen von Treibgas ausgeht.A device of the type mentioned can be found in DE-C-37 17 569. In order to extract suction material via the suction tool or a suction hose connected to it, the suction hose either leads to a blower or to a venturi nozzle, in front of which a compressed air line, which can be shut off by a cock to the required extent, extends to supply propellant gas.

Um die bekannte Vorrichtung zu nutzen, muß nicht nur das Saugwerkzeug, sondern auch entweder ein gesonderter Schalter für das Gebläse oder der Hahn für das Treibgas bedient werden, das der Venturi-Düse zugeführt wird.In order to use the known device, not only the suction tool, but also either a separate switch for the blower or the cock for the propellant gas must be operated, which is supplied to the Venturi nozzle.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art so auszubilden, daß eine problemlose Handhabung sichergestellt ist, insbesondere durch das Bedienen des Saugwerkzeuges unmittelbar eine Betätigung der Treibdüse möglich ist, ohne daß es zusätzlicher Handgriffe bedarf.The present invention is based on the object of designing a device of the type mentioned at the outset in such a way that problem-free handling is ensured, in particular actuation of the driving nozzle is possible directly by operating the suction tool, without additional handles being required.

Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß Mittel vorgesehen sind, die beim Entfernen des Saugwerkzeugs aus dessen Ruhestellung selbsttätig eine die Treibdüse einschaltende Funktion auslösen, und die beim Einbringen des Saugwerkzeugs in dessen Ruhestellung selbsttätig eine die Treibdüse ausschaltende Funktion auslösen.The object is achieved in that means are provided which automatically trigger a function that switches on the driving nozzle when the suction tool is removed from its rest position, and which automatically trigger a function that switches off the driving nozzle when the suction tool is brought into its rest position.

Durch die erfindungsgemäße Lehre wird eine kompakte Vorrichtung zum Absaugen von Sauggut zur Verfügung gestellt, die quasi eine Einhandbedienung ermöglicht: da allein beim Erfassen bzw. Zurücklegen des Saugwerkzeuges das Treibgas der Treibdüse zugeführt bzw. zu dieser hin abgesperrt wird. Insbesondere sind keine zusätzlichen Aggregate wie Ventile oder Gebläse erforderlich, um Sauggut absaugen zu können. Dies wiederum bedeutet, daß die Vonrichtung wartungsfreundlich ist.The teaching according to the invention provides a compact device for suctioning off suction material, which practically enables one-hand operation: since the driving gas is supplied to the driving nozzle or blocked off only when the suction tool is detected or replaced. In particular, no additional units such as valves or blowers are required in order to be able to extract suction material. This in turn means that the device is easy to maintain.

Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Embodiments of the invention result from the subclaims.

Anhand eines der Zeichnung zu entnehmenden Ausführungsbeispiels wird die Erfindung näher erläutert.The invention is explained in more detail with reference to an embodiment shown in the drawing.

In der einzigen Figur ist eine Vorrichtung 20 zum Absaugen von Sauggut mittels einer durch Treibgas betätigten Treibdüse 1 dargestellt, um über diese das Sauggut einer Absaugrohrleitung 9 zuzuführen, die zu einer Filteranlage führen können.In the single figure, a device 20 for suction of suction material by means of a driving nozzle 1 actuated by propellant gas is shown in order to feed the suction material to a suction pipe 9, which can lead to a filter system.

Die Düse 1, bei der es sich um eine Ringspaltdüse handelt, ist über ein Rohr 4 mit einem Saugrohr 20.1 verbunden, welches die Funktion eines Saugwerkzeuges 20 hat und endseitig eine Saugöffnung 8 aufweist. Das Saugwerkzeug 20 bzw. das Saugrohr 20.1 mit seiner Saugöffnung 8 kann in eine Werkzeugaufnahme 7 eingeschoben werden, in die ein Ventilstößel 6 eines Ventils 5 hineinragt. Über das Ventil 5 strömt Treibgas über eine Verbindung 10.1 zu dem Spalt 2 der Düse 1, um bei Betätigung des Saugwerkzeugs 20 Sauggut abzusaugen. Das Ventil 5 wird automatisch dann geöffnet, wenn das Saugwerkzeug 20 aus der Werkzeugaufnähme 7 herausgenommen wird. Umgekehrt wird das Ventil 5 durch Zurückdrücken des Ventilstößels 6 geschlossen, wenn das Saugrohr 20.1 in die Öffnung 7.1 der Werkzeugaufnahme 7 eingeschoben wird.The nozzle 1, which is an annular gap nozzle, is connected via a pipe 4 to a suction pipe 20.1, which has the function of a suction tool 20 and has a suction opening 8 at the end. The suction tool 20 or the suction pipe 20.1 with its suction opening 8 can be inserted into a tool holder 7 into which a valve tappet 6 of a valve 5 projects. Via the valve 5, propellant gas flows via a connection 10.1 to the gap 2 of the nozzle 1 in order to suck off suction material 20 when the suction tool is actuated. The valve 5 is automatically opened when the suction tool 20 is removed from the tool holder 7. Conversely, the valve 5 is closed by pushing back the valve tappet 6 when the suction pipe 20.1 is inserted into the opening 7.1 of the tool holder 7.

Das von dem Ventil 1 zu der Absaugrohrleitung 9 führende Rohr 3 mündet in dieser derart, daß bei Betrieb das Sauggut in Fließrichtung eingeblasen wird.The pipe 3 leading from the valve 1 to the suction pipe 9 opens into the latter in such a way that the suction material is blown in in the direction of flow during operation.

Ist im Ausführungsbeispiel nur ein Saugwerkzeug 20 an der Absaugrohrleitung 9 angeschlossen, so können in der Praxis eine Vielzahl von Saugwerkzeugen an eine einzige Absaugrohrleitung 9 angeschlossen werden, wodurch insbesondere die durch die erfindungsgemäße Lehre erzielbaren Vorteile gewährleistet sind, die unter anderem darin zu sehen sind:

  • ein Saugwerkzeug kostet nur einen Bruchtteil eines Industriestaubsaugers,
  • es ist eine Installation an dem Ort möglich, wo ein Gebrauch gewünscht wird,
  • eine hängende Montage bei kleinem Aufbau ist möglich, so daß das Saugwerkzeug nicht stört,
  • die Reinigung der Staubsaugluft entspricht höchsten Anforderungen, nämlich denjenigen, die auch an die Reinigung von Prozeßabluft gestellt werden,
  • durch den Anschluß an ein Prozeßluft-Absaugsystem ist es grundsätzlich unbeachtlich, ob ein oder mehrere Saugwerkzeuge gleichzeitig in Betrieb sind, da die anfallende Abluft im Vergleich zu der Prozeßabluft gering ist,
  • durch Einstellen der Treibdüse (1) kann die Saugkraft variiert werden,
  • ein problemloses Nachrüsten in bestehende Absaugrohrleitungen ist möglich, auch können mehrere Saugwerkzeuge pro Arbeitsplatz zum Einsatz gelangen,
  • durch die Verschaltung des Betriebs der Absauganlage mit dem Druckluftventil (5) kann sichergestellt werden, daß beim Stillstand des Absaugsystems ein Absaugen nicht erfolgt.
In the exemplary embodiment, if only one suction tool 20 is connected to the suction pipeline 9, in practice a large number of suction tools can be connected to a single suction pipeline 9, thereby ensuring in particular the advantages which can be achieved by the teaching according to the invention, which can be seen in:
  • a suction tool only costs a fraction of an industrial vacuum cleaner,
  • it can be installed at the location where use is desired,
  • hanging installation with a small construction is possible, so that the suction tool does not interfere,
  • The cleaning of the vacuum air meets the highest requirements, namely those that are also placed on the cleaning of process exhaust air,
  • by connecting to a process air extraction system, it is basically irrelevant whether one or more suction tools are in operation at the same time, since the exhaust air is low compared to the process exhaust air,
  • the suction power can be varied by adjusting the driving nozzle (1),
  • problem-free retrofitting in existing suction pipelines is possible, several suction tools can be used per workstation,
  • By interconnecting the operation of the suction system with the compressed air valve (5) it can be ensured that suction does not take place when the suction system is at a standstill.

Claims (3)

  1. A device for extraction of vacuum-cleaned material by means of a propellant nozzle (1) operated by propellant gas that has on the suction side a vacuum tube (4) with vacuum tool (20) on the end for extraction of the vacuum-cleaned material and on the discharge side is connected to an extraction pipe (9) leading to a suction and filtering system,
    wherein
    means (5, 6) are provided that automatically trigger a function switching on said propellant nozzle (1) when said vacuum tool (20) is removed from its rest position and that automatically trigger a function switching off said propellant nozzle (1) when said vacuum tool (20) is placed in its rest position.
  2. A device according to Claim 1,
    wherein
    said vacuum tool (20) is insertable into a mounting (7) defining the rest position, into which mounting a plunger (6) of a valve (5) controlling the propellant gas slidably projects.
  3. A device according to Claim 1 or Claim 2,
    wherein
    said propellant nozzle (1) is of the ring gap, Coanda, or ring hole or Venturi type.
EP95905643A 1994-01-25 1995-01-24 Filterless industrial vacuum cleaner operated by compressed gas and suitable for connection to an existing suction and filtering system Expired - Lifetime EP0740520B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9401201U 1994-01-25
DE9401201U DE9401201U1 (en) 1994-01-25 1994-01-25 By means of a suction or vacuuming tool operated with compressed air or compressed gas, when it is deposited, parked, suspended in or on its resting device, the propellant gas is automatically switched off and the suction cross section is closed
PCT/EP1995/000243 WO1995019730A1 (en) 1994-01-25 1995-01-24 Filterless industrial vacuum cleaner operated by compressed gas and suitable for connection to an existing suction and filtering system

Publications (2)

Publication Number Publication Date
EP0740520A1 EP0740520A1 (en) 1996-11-06
EP0740520B1 true EP0740520B1 (en) 1997-12-29

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Application Number Title Priority Date Filing Date
EP95905643A Expired - Lifetime EP0740520B1 (en) 1994-01-25 1995-01-24 Filterless industrial vacuum cleaner operated by compressed gas and suitable for connection to an existing suction and filtering system

Country Status (10)

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US (1) US5867865A (en)
EP (1) EP0740520B1 (en)
JP (1) JPH09507649A (en)
AT (1) ATE161405T1 (en)
AU (1) AU1417395A (en)
CA (1) CA2181679A1 (en)
CZ (1) CZ218096A3 (en)
DE (2) DE9401201U1 (en)
ES (1) ES2111390T3 (en)
WO (1) WO1995019730A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7299522B1 (en) 2002-01-25 2007-11-27 Smith Donald A Compressed air vacuum cleaner
US7203994B2 (en) * 2002-01-25 2007-04-17 Smith Donald A Compressed air vacuum cleaner
US6826799B2 (en) * 2002-01-25 2004-12-07 Donald A Smith Smith air vac
US9700186B2 (en) 2014-01-30 2017-07-11 Vista Outdoor Operations Llc Portable vacuuming device for collecting and neutralizing flammable residue
DE202016104914U1 (en) * 2016-09-06 2017-12-07 Fridolin Ohnemus Vacuum cleaner and dust extraction system with such a vacuum cleaner
JP7285395B2 (en) * 2019-05-31 2023-06-02 パナソニックＩｐマネジメント株式会社 dust collector

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR440599A (en) * 1912-02-26 1912-07-13 John Mac Naull Wilson Apparatus for vacuum removing pasty and sticky residues from any surfaces
FR75983E (en) * 1959-06-30 1961-09-01 Suction machine for clearing friable materials
SE426778B (en) * 1981-06-18 1983-02-14 Electrolux Ab DEVICE FOR REMOTE CONTROL OF A VACUUM ENGINE
DE3717569C1 (en) * 1987-05-25 1988-07-14 Rippert Paul Fa Suction device
GB2270463A (en) * 1992-09-10 1994-03-16 New Air Technical Services Lim Suction apparatus for cleaning or other purposes
FR2701830B1 (en) * 1993-02-26 1995-04-28 Muller & Cie Ets M Automatic device for closing the suction duct or for placing under vacuum.
US5454139A (en) * 1994-01-12 1995-10-03 Beck; Ronald K. Vacuum cleaner for vehicles

Also Published As

Publication number Publication date
WO1995019730A1 (en) 1995-07-27
DE9401201U1 (en) 1994-05-19
ATE161405T1 (en) 1998-01-15
EP0740520A1 (en) 1996-11-06
CZ218096A3 (en) 1997-02-12
US5867865A (en) 1999-02-09
JPH09507649A (en) 1997-08-05
CA2181679A1 (en) 1995-07-27
DE59501168D1 (en) 1998-02-05
AU1417395A (en) 1995-08-08
ES2111390T3 (en) 1998-03-01

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