EP1272091A2 - Method for cleaning, using cleaning jets - Google Patents

Method for cleaning, using cleaning jets

Info

Publication number
EP1272091A2
EP1272091A2 EP01938057A EP01938057A EP1272091A2 EP 1272091 A2 EP1272091 A2 EP 1272091A2 EP 01938057 A EP01938057 A EP 01938057A EP 01938057 A EP01938057 A EP 01938057A EP 1272091 A2 EP1272091 A2 EP 1272091A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
liquid
gas
valve
pressure
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
EP01938057A
Other languages
German (de)
French (fr)
Other versions
EP1272091B1 (en
Inventor
Yavuz Dedegil
Manfred Weber
Rüdiger EIERMANN
Hans-Peter Nannt
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1272091A2 publication Critical patent/EP1272091A2/en
Application granted granted Critical
Publication of EP1272091B1 publication Critical patent/EP1272091B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/26—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device
    • B05B7/262—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device
    • B05B7/267—Apparatus in which liquids or other fluent materials from different sources are brought together before entering the discharge device a liquid and a gas being brought together before entering the discharge device the liquid and the gas being both under pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • 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
    • A47L2601/00—Washing methods characterised by the use of a particular treatment
    • A47L2601/03—Pressurised, gaseous medium, also used for delivering of cleaning liquid

Definitions

  • the invention relates to a method for cleaning with cleaning jets.
  • cleaning jets from a nozzle, a plurality or a plurality of nozzles of an arrangement for conveying cleaning liquid for application, e.g. a surface to be cleaned is emitted of goods to be cleaned.
  • a sufficient cleaning result is in such an exposure to the goods to be cleaned by the amount of chemical additives that can be added to the cleaning liquid, but mainly by a sufficient duration of exposure to the goods to be cleaned with the pulse of the cleaning jet and the resulting over the period of time mechanical removal of dirt on the items to be cleaned is achieved.
  • the invention is therefore based on the object of providing a method for cleaning with cleaning jets in which energy can be saved and the duration of the cleaning program can be shortened.
  • This object is achieved in that a cleaning liquid is pressurized with a pressurized gas before exiting and is thereby additionally accelerated, as a result of which the cleaning liquid has a higher momentum after exiting.
  • the intensity of the mechanical removal on the surface of the material to be cleaned is inevitably increased, ie the effectiveness of the cleaning jet is improved, as a result of which, as explained at the outset, an adequate cleaning result mainly due to an adequate Duration of exposure to the goods to be cleaned and the mechanical removal of dirt on the goods to be cleaned over the period of time, the duration of the cleaning program shortened and thus less energy is required to promote the cleaning liquid.
  • the method according to the invention furthermore saves a considerable amount of cleaning liquid.
  • the invention provides a method for cleaning with cleaning jets of the type mentioned at the beginning, in which energy can be saved and the duration of the cleaning program can be shortened.
  • the gas is blown into a flowing or standing cleaning liquid.
  • the application according to the invention can be optimized in accordance with the desired cleaning process by selecting one of the variants shown.
  • the gas is blown in continuously or intermittently.
  • the method according to the invention can also be further optimized in accordance with the desired cleaning process by selecting one of the variants shown.
  • the gas is blown in with or without additives. Even a separate addition of additives, e.g. Cleaning agents etc. can be saved.
  • the method is used in household appliances and in a particularly advantageous manner in dishwashers.
  • the method has been shown that by increasing the effect of the cleaning jet with the method according to the invention in household appliances, in particular in dishwashers, particularly good cleaning results are achieved.
  • Show it 1 is a schematic representation of an apparatus for performing the method according to the invention according to a preferred embodiment of the invention
  • Fig. 2 is a schematic representation of a household dishwasher with the device for performing the preferred embodiment of the invention
  • Fig. 3 shows the time course of a spray pulse according to a preferred embodiment of the invention.
  • a device 1 for conveying liquids according to the cycle plug method in the exemplary embodiments shown and described has an arrangement 10 in which the liquid is pressurized by a gas under pressure, the liquid in the arrangement 10 being pressurized by the gas , which is alternately changed between two pressure levels so that the liquid flows in at a low pressure level and is conveyed in the desired conveying direction by applying the higher pressure level.
  • the gas is pressurized by means of a compressor 2.
  • a pressure vessel 4, into which the gas is introduced and stored, is connected to the compressor 2 in the flow direction of the gas after the compressor 2, that is to say at a pressure outlet 3 of the compressor 2.
  • the arrangement 10 has a pressure chamber 11 which is connected to a liquid container 9 in a liquid-conducting manner.
  • the gas controlled by a valve 5, is introduced into the pressure chamber 11.
  • This valve 5 for controlling the introduction of the gas into the pressure chamber 11 is in a connecting line 21 between the pressure vessel 4 and an inlet 20 of the gas arranged in the pressure chamber 11.
  • a liquid discharge line 12 is connected in a liquid-conducting manner to the pressure chamber 11 and the liquid container 9.
  • a liquid line 13 is continued from the liquid container 9 to the liquid drain 12 and has a branch 14 to the pressure chamber 11.
  • a valve 15 for opening and closing the connection between the liquid container 9 and the pressure chamber 11 is arranged, which in the exemplary embodiment is a check valve with a spherical closing body, which has a liquid outlet from the liquid container 9 when a against the Liquid container 9 closes directed flow.
  • a valve 16 for opening and closing the liquid discharge line 12 which in the exemplary embodiment is a check valve with a spherical closing body, which closes the liquid discharge line 12 when a flow directed against the liquid container 9 or against the pressure chamber 11 occurs
  • the pressure chamber 11 has a further inlet 18 which is controlled by a valve 17 and to which a ventilation line 19 is connected.
  • the inlet 20 of the gas into the pressure chamber 11 in the position of use that is to say from a frontal view of FIGS. 1 and 2, at the top and the inlet of the liquid line 13, ie the branch 14, is arranged at the bottom.
  • the arrangement 10 has a connection 23 between the pressure chamber 11 and a suction line 7 of the compressor 2, the suction line 7 of the compressor 2 in the flow direction of the gas after the branching for the connection 23 to the valve 17 and further to a valve 17 controlled inlet 20 of the pressure chamber 11 has a further valve 8 for opening or closing the suction line 7 with respect to the environment.
  • the liquid is pressurized by the gas with a pressure which changes so alternately between two pressure levels is that the liquid flows in at a low pressure level and is conveyed in the desired conveying direction by applying the higher pressure level.
  • the arrangement 10 at the low pressure level veau there is a negative pressure so that the liquid is sucked in and there is an excess pressure when the higher pressure level is applied.
  • connection with a suction line 7 of the compressor 2 it is of course also possible to generate the required negative pressure with an additional compressor and to connect this to the connection 23.
  • the arrangement 10 has a connection 22 between the liquid drain 12 and the pressure vessel 4.
  • a further valve 6 for controlling the introduction of the gas into the liquid discharge line 12 is arranged in the connection 22.
  • Valves 5, 6, 8 and 16 are initially closed, valves 15 and 17 are open.
  • the connection between the liquid container 9 and the pressure chamber 11 is arranged below the liquid level N1 of the liquid container 9, so that the liquid in the liquid container 9 to the liquid level N1 and in the pressure chamber 11 due to the suction function of the negative pressure described below to the much higher Liquid level N1 'extends.
  • the valve 5 By opening the valve 5, the gas under pressure is introduced into the pressure chamber 11, whereby the liquid is displaced to a lower liquid level N2.
  • the valve 15 is closed and the valve 16 is opened so that the liquid penetrates further into the liquid discharge line 12, an equal amount of liquid being moved from the liquid discharge line 12 to the corresponding liquid consumer.
  • the cleaning liquid is pressurized with a gas under pressure before it emerges and is thereby additionally accelerated, as a result of which the liquid has a higher momentum after the outlet.
  • the application of the flowing cleaning liquid is selected.
  • the valve 5 is now closed and the further valve 6 for controlling the introduction of the gas into the liquid discharge line 12 is opened - or it can, in reverse order, first the further valve 6 for controlling the introduction of the gas opened in the liquid discharge line 12 and then the valve 5 are closed - whereby the gas is passed into the liquid discharge line 12 in both alternative method steps and the pressurized cleaning liquid is pressurized according to the invention, whereby the cleaning liquid according to the invention is additionally accelerated and the Liquid has a higher momentum after the leak. Furthermore, the liquid located in the liquid discharge line 12 is pressed again, so that liquid is again moved to corresponding liquid consumers.
  • valve 16 and also the valve 6 and the valve 8 are now closed and the valve 17 is opened, as a result of which the gas located in the pressure chamber 11 is passed to the compressor 2 via the ventilation line 19 and the suction line 7 and a negative pressure is created in the pressure chamber 11. Due to the negative pressure or, in the event that the valve 15 is not a non-return valve, external control now opens the valve 15, so that liquid is sucked into the pressure chamber 11 from the liquid container 9 by the negative pressure prevailing in the pressure chamber 11. The valve 16 is held in the closed position. Now valve 17 is closed and at the same time valve 8 is opened again. This process is now repeated as long as fluid delivery is required.
  • FIG. 2 describes a dishwasher 25, in the exemplary embodiment shown a household dishwasher, in which the cycle plug method and the method according to the invention for cleaning with cleaning jets are carried out with a device 1 in the preferred embodiment shown and described in FIG. 1.
  • the gas air and the liquid is a cleaning liquid with which the items to be cleaned in the dishwasher 25 are charged, namely water, which may be mixed with detergents or rinse aids and, if appropriate, also with removed ones Leftovers are dirty.
  • the liquid container 9 of the device 1 is formed by the lowermost section of a washing container 26, which is usually referred to as a pump pot or drain pan and in which the items to be cleaned, for example cutlery, not shown, which are filled into crockery baskets 27, 28, Plates plates, cups, glasses etc., collecting cleaning liquid.
  • the cleaning liquid is applied to the material to be cleaned by spray devices, for example so-called spray arms 29, 30.
  • the cleaning liquid in the arrangement shown and described in FIG. 2 is conveyed by means of the device 1, as described for FIG. 1, into the liquid discharge line 12 connected to the feed lines to the spray arms 29, 30 and before it emerges from nozzles not described in any more detail the spray arms 29, 30 in the liquid discharge line 12, according to the inventive method, acted upon by a gas under pressure.
  • FIG. 3 The course of time in connection with the cycle plug method of a spray pulse generated with the preferred exemplary embodiments of the method according to the invention shown in FIGS. 1 and 2 is shown in FIG. 3, FIG. 3 showing the course of time and the water pressure generated from the time of the Opening the valve 17 for sucking the cleaning liquid into the pressure chamber 11 shows.
  • the suction period is designated by Ts in FIG. 3 and is approximately one second. Now a pause is made over a period Tp of about half a second.
  • the gas could also be blown into a standing cleaning liquid by the method according to the invention.
  • the inventive can also be driven with an intermittently blown gas. Addition of additive to the gas is also possible using the method according to the invention.
  • the intensity of the mechanical removal on the surface of the material to be cleaned is inevitably increased, i.e. improves the effectiveness of the cleaning jet, which, because a sufficient cleaning result is mainly achieved by a sufficient duration of exposure to the goods to be cleaned and the mechanical removal of dirt on the goods to be cleaned over the period of time, shortens the duration of the cleaning program and so that less energy is required to convey the cleaning liquid.
  • the process according to the invention furthermore saves a considerable amount of cleaning liquid.
  • a method for cleaning with cleaning jets of the type mentioned is created, in which energy can be saved and the duration of the cleaning program can be shortened.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning Or Drying Semiconductors (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
  • Detergent Compositions (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

The aim of the invention is to produce a cleaning method using cleaning jets that saves energy and shortens the duration of the cleaning programme. According to the invention, a cleaning fluid is impinged by a pressurised gas and additionally accelerated by the latter, prior to being discharged, whereby the fluid has a higher momentum once it has been discharged.

Description

Verfahren zur Reinigung mit Reinigungsstrahlen Methods for cleaning with cleaning jets
Die Erfindung betrifft ein Verfahren zur Reinigung mit Reinigungsstrahlen.The invention relates to a method for cleaning with cleaning jets.
Bei Verfahren der eingangs genannten Art werden üblicherweise Reinigungsstrahlen aus einer Düse, mehreren oder einer Vielzahl von Düsen einer Anordnung zum Fördern von Reinigungsflüssigkeit zur Beaufschlagung z.B. einer zu reinigenden Oberfläche von zu reinigendem Gut ausgesandt. Ein ausreichendes Reinigungsergebnis wird bei einer derartigen Beaufschlagung des zu reinigenden Gutes durch die Menge der chemischen Zusätze, die der Reinigungsflüssigkeit beigemischt werden können, aber hauptsächlich durch eine ausreichende Dauer der Beaufschlagung des zu reinigenden Gutes mit dem Impuls des Reinigungsstrahls und den dabei über die Zeitdauer erfolgenden mechani- sehen Abtrag von Verschmutzungen auf dem zu reinigenden Gutes erzielt. Dies bedeutet neben dem für das Fördern der Reinigungsflüssigkeit notwendigen Aufwand an Energie eine lange Dauer des Reinigungsprogrammes.In processes of the type mentioned at the outset, cleaning jets from a nozzle, a plurality or a plurality of nozzles of an arrangement for conveying cleaning liquid for application, e.g. a surface to be cleaned is emitted of goods to be cleaned. A sufficient cleaning result is in such an exposure to the goods to be cleaned by the amount of chemical additives that can be added to the cleaning liquid, but mainly by a sufficient duration of exposure to the goods to be cleaned with the pulse of the cleaning jet and the resulting over the period of time mechanical removal of dirt on the items to be cleaned is achieved. In addition to the energy required to convey the cleaning liquid, this means that the cleaning program lasts a long time.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Reinigung mit Reini- gungsstrahlen zu schaffen, bei dem Energie eingespart und die Dauer des Reinigungsprogrammes verkürzt werden kann.The invention is therefore based on the object of providing a method for cleaning with cleaning jets in which energy can be saved and the duration of the cleaning program can be shortened.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß eine Reinigungsflüssigkeit vor dem Austritt mit einem unter Druck stehenden Gas beaufschlagt und dadurch zusätzlich beschleunigt wird, wodurch die Reinigungsflüssigkeit nach dem Austritt einen höheren Impuls aufweist.This object is achieved in that a cleaning liquid is pressurized with a pressurized gas before exiting and is thereby additionally accelerated, as a result of which the cleaning liquid has a higher momentum after exiting.
Mit dem erfindungsgemäßen Verfahren der Erhöhung des Impulses der Tropfen eines Reinigungsstrahles wird zwangsläufig die Intensität des mechanischen Abtrages auf der Oberfläche des zu reinigenden Gutes erhöht, d.h. die Wirksamkeit des Reinigungsstrahles verbessert, wodurch, da, wie eingangs erläutert, ein ausreichendes Reinigungsergebnis hauptsächlich durch eine ausreichende Dauer der Beaufschlagung des zu reinigenden Gutes und den dabei über die Zeitdauer erfolgenden mechanischen Abtrag von Verschmutzungen auf dem zu reinigenden Gutes erzielt wird, die Dauer des Reini- gungsprogrammes verkürzt und damit weniger Energie zur Förderung der Reinigungsflüssigkeit benötigt wird. Bei Reinigungsverfahren, bei denen die Reinigungsflüssigkeit nicht wiederverwendet wird, wird mit dem erfindungsgemäßen Verfahren weiterhin dadurch noch eine beträchtliche Menge an Reinigungsflüssigkeit eingespart. Mit der Erfin- düng ist ein Verfahren zur Reinigung mit Reinigungsstrahlen der eingangs genannten Art geschaffen, bei dem Energie eingespart und die Dauer des Reinigungsprogrammes verkürzt werden kann.With the method according to the invention of increasing the momentum of the drops of a cleaning jet, the intensity of the mechanical removal on the surface of the material to be cleaned is inevitably increased, ie the effectiveness of the cleaning jet is improved, as a result of which, as explained at the outset, an adequate cleaning result mainly due to an adequate Duration of exposure to the goods to be cleaned and the mechanical removal of dirt on the goods to be cleaned over the period of time, the duration of the cleaning program shortened and thus less energy is required to promote the cleaning liquid. In cleaning processes in which the cleaning liquid is not reused, the method according to the invention furthermore saves a considerable amount of cleaning liquid. The invention provides a method for cleaning with cleaning jets of the type mentioned at the beginning, in which energy can be saved and the duration of the cleaning program can be shortened.
Nach einer bevorzugten Ausführungsform der Erfindung wird das Gas in eine strömende oder stehende Reinigungsflüssigkeit eingeblasen. Die erfindungsgemäße Beaufschlagung kann entsprechend des gewünschten Reinigungsprozesses durch Auswahl einer der aufgezeigten Varianten optimiert werden.According to a preferred embodiment of the invention, the gas is blown into a flowing or standing cleaning liquid. The application according to the invention can be optimized in accordance with the desired cleaning process by selecting one of the variants shown.
Nach einer vorteilhaften Ausführungsform der Erfindung wird das Gas stetig oder intermit- tierend eingeblasen. Das erfindungsgemäße Verfahren kann bei dieser Ausführungsform auch entsprechend des gewünschten Reinigungsprozesses durch Auswahl einer der aufgezeigten Varianten weiter optimiert werden.According to an advantageous embodiment of the invention, the gas is blown in continuously or intermittently. In this embodiment, the method according to the invention can also be further optimized in accordance with the desired cleaning process by selecting one of the variants shown.
Nach einer weiteren vorteilhaften Ausführungsform der Erfindung wird das Gas mit oder ohne Zusatzmittel eingeblasen. Damit könnte sogar eine gesonderte Zugabe von Zugabemitteln, z.B. Reinigungsmittel etc. eingespart werden.According to a further advantageous embodiment of the invention, the gas is blown in with or without additives. Even a separate addition of additives, e.g. Cleaning agents etc. can be saved.
Nach einer weiteren bevorzugten Ausführungsform der Erfindung wird das Verfahren in Haushaltgeräten und in besonders vorteilhafter Weise in Geschirrspülmaschinen ange- wandt. In der Praxis hat sich gezeigt, daß durch die Erhöhung der Wirkung des Reinigungsstrahles mit dem erfindungsgemäßen Verfahren in Haushaltgeräten, insbesondere in Geschirrspülmaschinen, besonders gute Reinigungsergebnisse erzielt werden.According to a further preferred embodiment of the invention, the method is used in household appliances and in a particularly advantageous manner in dishwashers. In practice it has been shown that by increasing the effect of the cleaning jet with the method according to the invention in household appliances, in particular in dishwashers, particularly good cleaning results are achieved.
Die Erfindung wird nachstehend anhand den in der Zeichnung dargestellten Ausfüh- rungsbeispielen von Vorrichtungen zur Durchführung des erfindungsgemäßen Verfahrens erläutert. Es zeigen Fig. 1 eine schematische Darstellung einer Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens nach einer bevorzugten Ausführungsform der Erfindung,The invention is explained below with reference to the exemplary embodiments of devices for carrying out the method according to the invention shown in the drawing. Show it 1 is a schematic representation of an apparatus for performing the method according to the invention according to a preferred embodiment of the invention,
Fig. 2 eine schematische Darstellung einer Haushalt-Geschirrspülmaschine mit der Vorrichtung zur Durchführung der bevorzugten Ausführungsform der Erfindung undFig. 2 is a schematic representation of a household dishwasher with the device for performing the preferred embodiment of the invention and
Fig. 3 den zeitlichen Verlauf eines Sprühimpules nach einer bevorzugten Ausführungsform der Erfindung.Fig. 3 shows the time course of a spray pulse according to a preferred embodiment of the invention.
In der nachfolgenden Figurenbeschreibung werden gleiche Teile mit gleichen Bezugszeichen benannt.In the following description of the figures, the same parts are given the same reference numerals.
In den im folgenden Ausführungsbeispielen wird das erfindungsgemäße Verfahren zur Reinigung mit Reinigungsstrahlen an einer Vorrichtung zur Förderung von Flüssigkeiten nach dem Taktpropfenverfahren gezeigt und beschrieben.In the following exemplary embodiments, the method according to the invention for cleaning with cleaning jets on a device for conveying liquids is shown and described according to the cycle plug method.
Eine Vorrichtung 1 zur Förderung von Flüssigkeiten nach dem Taktpropfenverfahren in den gezeigten und beschriebenen Ausführungsbeispielen weist eine Anordnung 10 auf, in der die Flüssigkeit durch ein unter Druck stehendes Gas beaufschlagt wird, wobei die Flüssigkeit in der Anordnung 10 durch das Gas mit einem Druck beaufschlagt wird, der zwischen zwei Druckniveaus abwechselnd so verändert wird, daß bei einem niedrigen Druckniveau die Flüssigkeit nachfließt und durch Anlegen des höheren Druckniveaus in die gewünschte Förderrichtung gefördert wird. Das Gas wird in den gezeigten Ausführungsbeispielen mittels eines Verdichters 2 unter Druck gestellt. An den Verdichter 2 in Strömungsrichtung des Gases nach dem Verdichter 2, das heißt an einem Druckausgang 3 des Verdichters 2, ist ein Druckbehälter 4 angeschlossen, in den das Gas eingeleitet und bevorratet wird.A device 1 for conveying liquids according to the cycle plug method in the exemplary embodiments shown and described has an arrangement 10 in which the liquid is pressurized by a gas under pressure, the liquid in the arrangement 10 being pressurized by the gas , which is alternately changed between two pressure levels so that the liquid flows in at a low pressure level and is conveyed in the desired conveying direction by applying the higher pressure level. In the exemplary embodiments shown, the gas is pressurized by means of a compressor 2. A pressure vessel 4, into which the gas is introduced and stored, is connected to the compressor 2 in the flow direction of the gas after the compressor 2, that is to say at a pressure outlet 3 of the compressor 2.
Weiterhin weist die Anordnung 10 einen mit einem Flüssigkeitsbehälter 9 flüssigkeitsleitend verbundenen Druckraum 11 auf. In den Druckraum 11 wird das Gas, gesteuert durch ein Ventil 5, eingeleitet. Dieses Ventil 5 zur Steuerung der Einleitung des Gases in den Druckraum 11 ist in einer Verbindungsleitung 21 zwischen dem Druckbehälter 4 und einem Eintritt 20 des Gases in den Druckraum 11 angeordnet. Mit dem Druckraum 11 und dem Flüssigkeitsbehäiter 9 ist eine Flüssigkeitsableitung 12 flüssigkeitsleitend verbunden. Eine Flüssigkeitsleitung 13 ist von dem Flüssigkeitsbehälter 9 bis zur Flüssigkeitsableitung 12 fortgesetzt und weist eine Abzweigung 14 zu dem Druckraum 11 auf. Zwischen dem Flüssigkeitsbehälter 9 und dem Druckraum 11 ist ein Ventil 15 zum Öffnen und Schließen der Verbindung zwischen dem Flüssigkeitsbehälter 9 und dem Druckraum 11 angeordnet, das im Ausführungsbeispiel ein Rückschlagventil mit kugelförmigem Schließkörper ist, das einen Flüssigkeitsauslaß aus dem Flüssigkeitsbehälter 9 bei Auftreten einer gegen den Flüssigkeitsbehälter 9 gerichteten Strömung verschließt. Zwischen dem Druckraum 11 und der Flüssigkeitsableitung 12 ist ein Ventil 16 zum Öffnen und Schließen der Flüssigkeitsableitung 12 angeordnet, das im Ausführungsbeispiel ein Rückschlagventil mit kugelförmigem Schließkörper ist, das die Flüssigkeitsableitung 12 bei Auftreten einer gegen den Flüssigkeitsbehälter 9 oder gegen den Druckraum 11 gerichteten Strömung verschließt. Der Druckraum 11 weist einen weiteren mit einem Ventil 17 gesteuerten Eingang 18 auf, an den eine Entlüftungsleitung 19 angeschlossen ist. Der Eintritt 20 des Gases in den Druckraum 11 in Gebrauchslage, d.h. aus frontaler Sicht auf die Figuren 1 und 2, oben und der Eintritt der Flüssigkeitsleitung 13, d.h. die Abzweigung 14, unten angeordnet ist.Furthermore, the arrangement 10 has a pressure chamber 11 which is connected to a liquid container 9 in a liquid-conducting manner. The gas, controlled by a valve 5, is introduced into the pressure chamber 11. This valve 5 for controlling the introduction of the gas into the pressure chamber 11 is in a connecting line 21 between the pressure vessel 4 and an inlet 20 of the gas arranged in the pressure chamber 11. A liquid discharge line 12 is connected in a liquid-conducting manner to the pressure chamber 11 and the liquid container 9. A liquid line 13 is continued from the liquid container 9 to the liquid drain 12 and has a branch 14 to the pressure chamber 11. Between the liquid container 9 and the pressure chamber 11, a valve 15 for opening and closing the connection between the liquid container 9 and the pressure chamber 11 is arranged, which in the exemplary embodiment is a check valve with a spherical closing body, which has a liquid outlet from the liquid container 9 when a against the Liquid container 9 closes directed flow. Between the pressure chamber 11 and the liquid discharge line 12 there is a valve 16 for opening and closing the liquid discharge line 12, which in the exemplary embodiment is a check valve with a spherical closing body, which closes the liquid discharge line 12 when a flow directed against the liquid container 9 or against the pressure chamber 11 occurs , The pressure chamber 11 has a further inlet 18 which is controlled by a valve 17 and to which a ventilation line 19 is connected. The inlet 20 of the gas into the pressure chamber 11 in the position of use, that is to say from a frontal view of FIGS. 1 and 2, at the top and the inlet of the liquid line 13, ie the branch 14, is arranged at the bottom.
In der in Fig. 1 und 2 gezeigten Ausführungsform der Vorrichtung 1 zur Förderung von Flüssigkeiten nach dem Taktpropfenverfahren weist die Anordnung 10 eine Verbindung 23 zwischen dem Druckraum 1 1 und einer Saugleitung 7 des Verdichters 2 auf, wobei die Saugleitung 7 des Verdichters 2 in Strömungsrichtung des Gases nach der Abzweigung für die Verbindung 23 mit dem Ventil 17 des weiteren mit einem Ventil 17 gesteuerten Eingangs 20 des Druckraumes 11 ein weiteres Ventil 8 zum Öffnen oder Schließen der Saugleitung 7 gegenüber der Umgebung aufweist.In the embodiment of the device 1 for conveying liquids according to the cyclic plug method shown in FIGS. 1 and 2, the arrangement 10 has a connection 23 between the pressure chamber 11 and a suction line 7 of the compressor 2, the suction line 7 of the compressor 2 in the flow direction of the gas after the branching for the connection 23 to the valve 17 and further to a valve 17 controlled inlet 20 of the pressure chamber 11 has a further valve 8 for opening or closing the suction line 7 with respect to the environment.
In der in Fig. 1 und 2 gezeigten Ausführungsform der Vorrichtung 1 zur Förderung von Flüssigkeiten nach dem Taktpropfenverfahren wird, wie oben schon erläutert, in der An- Ordnung 10 die Flüssigkeit durch das Gas mit einem Druck beaufschlagt, der zwischen zwei Druckniveaus abwechselnd so verändert wird, daß bei einem niedrigen Druckniveau die Flüssigkeit nachfließt und durch Anlegen des höheren Druckniveaus in die gewünschte Förderrichtung gefördert wird., wobei in der Anordnung 10 bei dem niedrigen Druckni- veau, ein Unterdruck herrscht, so daß die Flüssigkeit angesaugt wird und beim Anlegen des höheren Druckniveaus ein Überdruck herrscht.In the embodiment of the device 1 for conveying liquids according to the cyclic plug method shown in FIGS. 1 and 2, as already explained above, in the arrangement 10, the liquid is pressurized by the gas with a pressure which changes so alternately between two pressure levels is that the liquid flows in at a low pressure level and is conveyed in the desired conveying direction by applying the higher pressure level., In the arrangement 10 at the low pressure level veau, there is a negative pressure so that the liquid is sucked in and there is an excess pressure when the higher pressure level is applied.
Alternativ zu der oben angeführten Verbindung mit einer Saugleitung 7 des Verdichters 2 ist es natürlich auch möglich den benötigten Unterdruck mit einem zusätzlichen Verdichter zu erzeugen und diesen an die Verbindung 23 anzuschließen.As an alternative to the above-mentioned connection with a suction line 7 of the compressor 2, it is of course also possible to generate the required negative pressure with an additional compressor and to connect this to the connection 23.
Zur Durchführung des erfindungsgemäßen Verfahrens zur Reinigung mit Reinigungsstrahlen weist die Anordnung 10 eine Verbindung 22 zwischen der Flüssigkeitsableitung 12 und dem Druckbehälter 4 auf. In der Verbindung 22 ist ein weiteres Ventil 6 zur Steuerung der Einleitung des Gases in die Flüssigkeitsableitung 12 angeordnet.To carry out the method according to the invention for cleaning with cleaning jets, the arrangement 10 has a connection 22 between the liquid drain 12 and the pressure vessel 4. A further valve 6 for controlling the introduction of the gas into the liquid discharge line 12 is arranged in the connection 22.
Die Förderung von Flüssigkeit nach dem Taktpropfenverfahren unter Einfügung des erfindungsgemäßen Verfahrens zur Reinigung mit Reinigungsstrahlen wird in dem in Fig. 1 und 2 gezeigten Ausführungsbeispiel wie folgt ausgeführt:The conveying of liquid according to the cycle plug method with the insertion of the method according to the invention for cleaning with cleaning jets is carried out as follows in the exemplary embodiment shown in FIGS. 1 and 2:
Die Ventile 5, 6, 8 und 16 sind anfänglich geschlossen, die Ventile 15 und 17 sind geöffnet. Die Verbindung zwischen dem Flüssigkeitsbehälter 9 und dem Druckraum 11 ist unter dem Flüssigkeitsniveau N1 des Flüssigkeitsbehälters 9 angeordnet, so daß sich die Flüssigkeit in dem Flüssigkeitsbehälter 9 auf das Flüssigkeitsniveau N1 und in dem Druckraum 11 aufgrund der weiter unten beschriebenen Saugfunktion des Unterdruckes auf das wesentlich höhere Flüssigkeitsniveau N1 ' erstreckt. Durch Öffnen des Ventils 5 wird das unter einem Überdruck stehende Gas in den Druckraum 11 eingeleitet, wodurch die Flüssigkeit bis zu einem unteren Flüssigkeitsniveau N2 verdrängt wird. Dabei wird das Ventil 15 geschlossen und das Ventil 16 geöffnet, so daß die Flüssigkeit weiter in die Flüssigkeitsableitung 12 eindringt, wobei eine gleiche Menge Flüssigkeit aus der Flüssigkeitsableitung 12 zu entsprechenden Flüssigkeitsverbraucher bewegt wird.Valves 5, 6, 8 and 16 are initially closed, valves 15 and 17 are open. The connection between the liquid container 9 and the pressure chamber 11 is arranged below the liquid level N1 of the liquid container 9, so that the liquid in the liquid container 9 to the liquid level N1 and in the pressure chamber 11 due to the suction function of the negative pressure described below to the much higher Liquid level N1 'extends. By opening the valve 5, the gas under pressure is introduced into the pressure chamber 11, whereby the liquid is displaced to a lower liquid level N2. The valve 15 is closed and the valve 16 is opened so that the liquid penetrates further into the liquid discharge line 12, an equal amount of liquid being moved from the liquid discharge line 12 to the corresponding liquid consumer.
Nach dem erfindungsgemäßen Verfahren zur Reinigung mit Reinigungsstrahlen wird die Reinigungsflüssigkeit vor dem Austritt mit einem unter Druck stehenden Gas beaufschlagt und dadurch zusätzlich beschleunigt wird, wodurch die Flüssigkeit nach dem Austritt einen höheren Impuls aufweist. Im beschriebenen Ausführungsbeispiel der Erfindung wird das Beaufschlagen der strömenden Reinigungsflüssigkeit gewählt. Zur Durchführung dieses Ausführungsbeispiel des erfindungsgemäßen Verfahrens wird nun das Ventil 5 geschlossen und das weitere Ventil 6 zur Steuerung der Einleitung des Gases in die Flüssigkeitsableitung 12 geöffnet werden - oder es kann, in umgekehrter Reihenfolge, zuerst das weitere Ventil 6 zur Steuerung der Einleitung des Gases in die Flüssigkeitsableitung 12 geöffnet und dann das Ventil 5 geschlossen werden -, wodurch in beiden alternativen Verfahrensschritten das Gas in die Flüssigkeitsableitung 12 geleitet wird und das erfindungsgemäße Beaufschlagen der Reinigungsflüssigkeit mit einem unter Druck stehenden Gas erfolgt, wodurch erfindungsgemäß die Reinigungsflüssigkeit zusätzlich beschleunigt wird und die Flüssigkeit nach dem Austritt einen höheren Impuls aufweisen. Weiterhin wird ein Nachdrücken der in der Flüssigkeitsableitung 12 befindlichen Flüssigkeit bewirkt, so daß nochmals Flüssigkeit zu entsprechenden Flüssigkeitsverbrauchern bewegt wird.According to the method according to the invention for cleaning with cleaning jets, the cleaning liquid is pressurized with a gas under pressure before it emerges and is thereby additionally accelerated, as a result of which the liquid has a higher momentum after the outlet. In the described embodiment of the invention, the application of the flowing cleaning liquid is selected. To carry out this exemplary embodiment of the method according to the invention, the valve 5 is now closed and the further valve 6 for controlling the introduction of the gas into the liquid discharge line 12 is opened - or it can, in reverse order, first the further valve 6 for controlling the introduction of the gas opened in the liquid discharge line 12 and then the valve 5 are closed - whereby the gas is passed into the liquid discharge line 12 in both alternative method steps and the pressurized cleaning liquid is pressurized according to the invention, whereby the cleaning liquid according to the invention is additionally accelerated and the Liquid has a higher momentum after the leak. Furthermore, the liquid located in the liquid discharge line 12 is pressed again, so that liquid is again moved to corresponding liquid consumers.
In der Fortsetzung des Taktpropfenverfahren wird nun das Ventil 16 sowie auch das Ven- til 6 und das Ventil 8 geschlossen und das Ventil 17 geöffnet, wodurch das in dem Druckraum 11 befindliche Gas über die Entlüftungsleitung 19 und die Saugleitung 7 zum Verdichter 2 geleitet wird und ein Unterdruck in der Druckkammer 11 entsteht. Durch den Unterdruck oder, für den Fall, daß das Ventil 15 kein Rückschlagventil ist, durch Fremdsteuerung öffnet sich nun das Ventil 15, so daß Flüssigkeit durch den in der Druckkammer 11 herrschenden Unterdruck aus dem Flüssigkeitsbehälter 9 in den Druckraum 11 eingesaugt wird. Das Ventil 16 wird in Schließlage gehalten. Nun wird das Ventil 17 geschlossen und gleichzeitig wird das Ventil 8 wieder geöffnet. Dieser Vorgang wird nun solange Flüssigkeitsförderung benötigt wird wiederholt.In the continuation of the cycle plug method, the valve 16 and also the valve 6 and the valve 8 are now closed and the valve 17 is opened, as a result of which the gas located in the pressure chamber 11 is passed to the compressor 2 via the ventilation line 19 and the suction line 7 and a negative pressure is created in the pressure chamber 11. Due to the negative pressure or, in the event that the valve 15 is not a non-return valve, external control now opens the valve 15, so that liquid is sucked into the pressure chamber 11 from the liquid container 9 by the negative pressure prevailing in the pressure chamber 11. The valve 16 is held in the closed position. Now valve 17 is closed and at the same time valve 8 is opened again. This process is now repeated as long as fluid delivery is required.
Nach einer bevorzugten Ausführungsform der Erfindung wird das Verfahren in Haushaltgeräten angewandt. In Fig. 2 wird eine Geschirrspülmaschine 25, im gezeigten Ausführungsbeispiel eine Haushalt-Geschirrspülmaschine beschrieben, in der das Taktpropfenverfahren und das erfindungsgemäße Verfahren zur Reinigung mit Reinigungsstrahlen mit einer Vorrichtung 1 in der in der Fig. 1 gezeigten und beschriebenen, bevorzugten Ausführungsform durchgeführt wird. Bei dieser Anwendung des erfindungsgemäßen Verfahrens in der Vorrichtung 1 ist das Gas Luft und die Flüssigkeit eine Reinigungsflüssigkeit, mit der in der Geschirrspülmaschine 25 zu reinigendes Gut beaufschlagt wird, nämlich Wasser, das ggf. mit Reinigungs- oder Klarspülmitteln vermischt und ggf. auch mit abgetragenen Speiseresten verschmutzt ist. Der Flüssigkeitsbehälter 9 der Vorrichtung 1 wird bei der Geschirrspülmaschine 25 von dem untersten Abschnitt eines Spülbehälters 26 gebildet, der üblicherweise Pumpentopf oder Ablaufwanne genannt wird und in dem sich die von dem in Geschirrkörben 27, 28 eingefüllten, nicht gezeigten zu reinigendem Gut, z.B. Besteck, Teller, Tassen, Gläser usw., zurücklaufenden Reinigungsflüssigkeit sammelt. Das zu reinigende Gut wird mit der Reinigungsflüssigkeit durch Sprüheinrichtungen, z.B. sogenannten Sprüharmen 29, 30, beaufschlagt. Die Reinigungsflüssigkeit wird in der in Fig. 2 gezeigten und beschriebenen Anordnung mittels der Vorrichtung 1, wie zu Fig. 1 beschrieben, in die mit den Zuleitun- gen zu den Sprüharmen 29, 30 verbundene Flüssigkeitsableitung 12 gefördert und vor Austritt aus nicht näher beschriebenen Düsen der Sprüharme 29, 30 in der Flüssigkeitsableitung 12, nach dem erfindungsgemäßen Verfahren, mit einem unter Druck stehenden Gas beaufschlagt.According to a preferred embodiment of the invention, the method is used in household appliances. FIG. 2 describes a dishwasher 25, in the exemplary embodiment shown a household dishwasher, in which the cycle plug method and the method according to the invention for cleaning with cleaning jets are carried out with a device 1 in the preferred embodiment shown and described in FIG. 1. In this application of the method according to the invention in the device 1, the gas air and the liquid is a cleaning liquid with which the items to be cleaned in the dishwasher 25 are charged, namely water, which may be mixed with detergents or rinse aids and, if appropriate, also with removed ones Leftovers are dirty. In the dishwasher 25, the liquid container 9 of the device 1 is formed by the lowermost section of a washing container 26, which is usually referred to as a pump pot or drain pan and in which the items to be cleaned, for example cutlery, not shown, which are filled into crockery baskets 27, 28, Plates plates, cups, glasses etc., collecting cleaning liquid. The cleaning liquid is applied to the material to be cleaned by spray devices, for example so-called spray arms 29, 30. The cleaning liquid in the arrangement shown and described in FIG. 2 is conveyed by means of the device 1, as described for FIG. 1, into the liquid discharge line 12 connected to the feed lines to the spray arms 29, 30 and before it emerges from nozzles not described in any more detail the spray arms 29, 30 in the liquid discharge line 12, according to the inventive method, acted upon by a gas under pressure.
Der zeitlichen Verlauf in Verbindung mit dem Taktpropfenverfahren eines mit dem zu den Fig. 1 und 2 gezeigten, bevorzugten Ausführungsbeispielen des erfindungsgemäßen Verfahrens erzeugten Sprühimpulses ist in Fig. 3 gezeigt, wobei die Fig. 3 den zeitlichen Ablauf und den erzeugten Wasserdruck ab dem Zeitpunkt des Öffnen des Ventils 17 zum Ansaugen der Reinigungsflüssigkeit in den Druckraum 11 zeigt. Der Zeitraum zum An- saugen ist in Fig. 3 mit Ts bezeichnet und beträgt etwa eine Sekunde. Nun wird über eine Zeitdauer Tp von etwa einer halben Sekunde eine Pause eingelegt.The course of time in connection with the cycle plug method of a spray pulse generated with the preferred exemplary embodiments of the method according to the invention shown in FIGS. 1 and 2 is shown in FIG. 3, FIG. 3 showing the course of time and the water pressure generated from the time of the Opening the valve 17 for sucking the cleaning liquid into the pressure chamber 11 shows. The suction period is designated by Ts in FIG. 3 and is approximately one second. Now a pause is made over a period Tp of about half a second.
Danach folgt die Beaufschlagung der Reinigungsflüssigkeit mit dem unter Druck stehenden Gas vor dem Austritt der Reinigungsflüssigkeit nach dem erfindungsgemäßen Ver- fahren, wobei im gezeigten Ausführungsbeispiel der Erfindung eine impulsartige Förderung der Reinigungsflüssigkeit durch Öffnen des Ventils 5 mit einer Impulshöhe If von im Ausführungsbeispiel ca. 310 Millibar und das Nachdrücken durch Öffnen des Ventils 6 mit einer Impulshöhe In von im Ausführungsbeispiel zusätzlich ca. 90 Millibar zusammen über eine Zeitdauer Ti von im Ausführungsbeispiel einer halben Sekunde durchgeführt wird. Mit dieser sehr kurzen Impulsdauer Ti wird die Reinigungswirkung der unter Druck auf das zu reinigende Gut aufgebrachten Reinigungsflüssigkeit optimiert.This is followed by the application of the pressurized gas to the cleaning liquid before the cleaning liquid emerges according to the method according to the invention, in the exemplary embodiment of the invention shown a pulsed delivery of the cleaning liquid by opening the valve 5 with a pulse height If of approximately 310 in the exemplary embodiment Millibars and the re-pressing by opening the valve 6 with a pulse height In of approximately 90 millibars in the exemplary embodiment are carried out together over a period of time Ti of half a second in the exemplary embodiment. With this very short pulse duration Ti, the cleaning effect of the cleaning liquid applied under pressure to the material to be cleaned is optimized.
Alternativ könnte nach dem erfindungsgemäßen Verfahren das Gas auch in eine stehende Reinigungsflüssigkeit eingeblasen werden. Weiterhin ist das erfindungsgemäße Ver- fahren auch mit einem intermittierend eingeblasenen Gas durchführbar. Auch eine Beigabe von Zusatzmittel zu dem Gas ist nach dem erfindungsgemäßen Verfahren möglich.Alternatively, the gas could also be blown into a standing cleaning liquid by the method according to the invention. Furthermore, the inventive can also be driven with an intermittently blown gas. Addition of additive to the gas is also possible using the method according to the invention.
Bei einer Beaufschlagung des zu reinigenden Gutes im zeitlichen Abstand, wie z.B. bei dem oben geschilderten Taktpropfenförderverfahren, erfolgt bei jedem Beginn der Beaufschlagung ein Druckanstieg in der beaufschlagenden Reinigungsflüssigkeit sowie bei jedem Ende der Beaufschlagung ein Abfall des Druckes in der beaufschlagenden Reinigungsflüssigkeit. In der Praxis hat sich gezeigt, daß durch das abwechselnde Ansteigen und Abfallen des Druckes der Reinigungsflüssigkeit und der damit verursachten abwech- selnde Ansteigen und Abfallen der auf die Verschmutzungen auf dem zu reinigenden Gut wirkenden mechanischen Kräfte, ein gutes Reinigungsergebnis bei einer kurzen Dauer der Beaufschlagung erreicht wird.When the goods to be cleaned are loaded at intervals, e.g. With the cycle plug conveying method described above, there is an increase in pressure in the pressurizing cleaning liquid each time the application is started and a decrease in the pressure in the operating cleaning liquid at each end of the application. In practice, it has been shown that the alternating rise and fall in the pressure of the cleaning liquid and the resulting rise and fall in the mechanical forces acting on the contaminants on the items to be cleaned result in a good cleaning result with a short duration of exposure is achieved.
Dieses Reinigungsergebnis wird, wie ebenfalls in der Praxis nachgewiesen, noch wesent- lieh verbessert, wenn, nach dem erfindungsgemäßen Verfahren, die Förderung der Reinigungsflüssigkeit durch Beaufschlagung mit einem unter Druck stehenden Gas vor dem Austritt und damit impulsartig erfolgt, wobei das abwechselnde Ansteigen und Abfallen des Druckes der Reinigungsflüssigkeit und der damit verursachten abwechselnde Ansteigen und Abfallen der auf die Verschmutzungen auf dem zu reinigenden Gut wirkenden mechanischen Kräfte in sehr kurzer Zeitdauer und damit sehr intensiv stattfindet.This cleaning result, as also proven in practice, is significantly improved if, according to the method according to the invention, the cleaning liquid is conveyed by applying a pressurized gas before the outlet and thus in an impulsive manner, the alternating rising and falling the pressure of the cleaning liquid and the alternating rise and fall of the mechanical forces acting on the soiling on the items to be cleaned takes place in a very short period of time and therefore very intensely.
Mit dem erfindungsgemäßen Verfahren der Erhöhung des Impulses der Tropfen eines Reinigungsstrahles wird zwangsläufig die Intensität des mechanischen Abtrages auf der Oberfläche des zu reinigenden Gutes erhöht, d.h. die Wirksamkeit des Reinigungsstrah- les verbessert, wodurch, da ein ausreichendes Reinigungsergebnis hauptsächlich durch eine ausreichende Dauer der Beaufschlagung des zu reinigenden Gutes und den dabei über die Zeitdauer erfolgenden mechanischen Abtrag von Verschmutzungen auf dem zu reinigenden Gutes erzielt wird, die Dauer des Reinigungsprogrammes verkürzt und damit weniger Energie zur Förderung der Reinigungsflüssigkeit benötigt wird. Bei Reinigungs- verfahren, bei denen die Reinigungsflüssigkeit nicht wiederverwendet wird, wird mit dem erfindungsgemäßen Verfahren weiterhin noch eine beträchtliche Menge an Reinigungsflüssigkeit eingespart. Mit der Erfindung ist ein Verfahren zur Reinigung mit Reinigungsstrahlen der eingangs genannten Art geschaffen, bei dem Energie eingespart und die Dauer des Reinigungsprogrammes verkürzt werden kann. With the method according to the invention of increasing the momentum of the drops of a cleaning jet, the intensity of the mechanical removal on the surface of the material to be cleaned is inevitably increased, i.e. improves the effectiveness of the cleaning jet, which, because a sufficient cleaning result is mainly achieved by a sufficient duration of exposure to the goods to be cleaned and the mechanical removal of dirt on the goods to be cleaned over the period of time, shortens the duration of the cleaning program and so that less energy is required to convey the cleaning liquid. In cleaning processes in which the cleaning liquid is not reused, the process according to the invention furthermore saves a considerable amount of cleaning liquid. With the invention, a method for cleaning with cleaning jets of the type mentioned is created, in which energy can be saved and the duration of the cleaning program can be shortened.

Claims

Patentansprüche claims
1. Verfahren zur Reinigung mit Reinigungsstrahlen, dadurch gekennzeichnet, daß eine Reinigungsflüssigkeit vor dem Austritt mit einem unter Druck stehenden Gas beaufschlagt und dadurch zusätzlich beschleunigt wird, wodurch die Flüssigkeit nach dem Austritt einen höheren Impuls aufweist.1. A method of cleaning with cleaning jets, characterized in that a cleaning liquid is acted upon by a pressurized gas before exiting and is thereby additionally accelerated, as a result of which the liquid has a higher momentum after exiting.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Gas in eine strömende oder stehende Reinigungsflüssigkeit eingeblasen wird.2. The method according to claim 1, characterized in that the gas is blown into a flowing or standing cleaning liquid.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Gas stetig oder intermittierend eingeblasen wird.3. The method according to claim 1 or 2, characterized in that the gas is injected continuously or intermittently.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Gas mit oder ohne Zusatzmittel eingeblasen wird.4. The method according to any one of claims 1 to 3, characterized in that the gas is blown in with or without additives.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß das Verfahren in Haushaltgeräten angewandt wird.5. The method according to any one of claims 1 to 4, characterized in that the method is applied in household appliances.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Verfahren in Geschirrspülmaschinen (25) angewandt wird. 6. The method according to any one of claims 1 to 5, characterized in that the method is used in dishwashers (25).
EP01938057A 2000-04-06 2001-03-27 Method for cleaning, using cleaning jets Expired - Lifetime EP1272091B1 (en)

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DE10017240 2000-04-06
DE10017240A DE10017240A1 (en) 2000-04-06 2000-04-06 Process for cleaning cleaning jets
PCT/EP2001/003484 WO2001076446A2 (en) 2000-04-06 2001-03-27 Method for cleaning, using cleaning jets

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AT (1) ATE330532T1 (en)
AU (1) AU6381801A (en)
DE (2) DE10017240A1 (en)
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GB1338607A (en) * 1971-06-12 1973-11-28 Kingsdown Instr Co Ltd Apparatus for dispensing a predetermined and variable volume of liquid
DE3916446A1 (en) * 1988-06-14 1990-03-15 Autobahnbaukombinat Veb Improved method of dressing solid materials - is achieved by injection of air into water jets
JP3504023B2 (en) * 1995-05-26 2004-03-08 株式会社ルネサステクノロジ Cleaning device and cleaning method
JP3315611B2 (en) * 1996-12-02 2002-08-19 三菱電機株式会社 Two-fluid jet nozzle for cleaning, cleaning device, and semiconductor device
DE19750265A1 (en) * 1997-11-13 1999-05-20 Miele & Cie Cleaning method

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DE50110259D1 (en) 2006-08-03
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ES2266202T3 (en) 2007-03-01
TR200400338T4 (en) 2004-03-22
WO2001076446A3 (en) 2002-04-04
EP1272091B1 (en) 2006-06-21
AU6381801A (en) 2001-10-23
DE10017240A1 (en) 2001-10-11

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