EP1272092B1 - Device for conveying flowing substances - Google Patents

Device for conveying flowing substances Download PDF

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Publication number
EP1272092B1
EP1272092B1 EP01923712A EP01923712A EP1272092B1 EP 1272092 B1 EP1272092 B1 EP 1272092B1 EP 01923712 A EP01923712 A EP 01923712A EP 01923712 A EP01923712 A EP 01923712A EP 1272092 B1 EP1272092 B1 EP 1272092B1
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EP
European Patent Office
Prior art keywords
pressure
pressure chamber
valve
substances
container
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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EP01923712A
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German (de)
French (fr)
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EP1272092A1 (en
Inventor
RĂ¼diger EIERMANN
Hans-Peter Nannt
Manfred Weber
Yavuz Dedegil
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1272092A1 publication Critical patent/EP1272092A1/en
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/0002Washing processes, i.e. machine working principles characterised by phases or operational steps
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00Washing or rinsing machines for crockery or tableware
    • A47L15/42Details
    • A47L15/4214Water supply, recirculation or discharge arrangements; Devices therefor
    • A47L15/4225Arrangements or adaption of recirculation or discharge pumps
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47LDOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L2601/00Washing methods characterised by the use of a particular treatment
    • A47L2601/03Pressurised, gaseous medium, also used for delivering of cleaning liquid

Definitions

  • the invention relates to a device for conveying flowable materials and / or Mixtures.
  • flowable substances such as.
  • liquids fine-grained bulk materials or mixtures of solid particles with liquids or gases
  • pumps of various kinds Types transported including centrifugal pumps, piston pumps or diaphragm pumps etc .
  • US 3,102,666 discloses a method of conveying water in one Dishwasher and a dishwasher for performing the method known.
  • a vertically arranged in a dishwasher pipe with an opening at the upper end for loading the items to be washed with water an opening on a body connected to the tube.
  • an opening on a body connected to the tube.
  • About this opening water flows into the pipe section and into the body.
  • About another opening on the body with a solenoid valve can through this further opening with compressed air in the pipe section and water in the body blown out and thus the dishes with water be charged.
  • a method for cleaning objects and a device for carrying out the method is known.
  • the admission of the nozzles in the washroom, in which the material to be cleaned is arranged, can take place via a conventional pump or directly from a storage container.
  • the reservoir is filled with cleaning fluid, which passes through a line with a controllable valve and a sterile filter in this pantry.
  • an air space in the reservoir above the cleaning fluid can be pressurized with compressed air.
  • a pipe protrudes, the opening opens into the cleaning liquid.
  • the cleaning fluid flows via this line directly to the nozzles in the washroom.
  • the reservoir also has no valve for venting the reservoir.
  • the invention is therefore based on the object, a device for the promotion of to create flowable materials that in a simple structural design over a improved functionality.
  • a device for Promotion of flowable materials having an arrangement with a pressure chamber, in the substances by a of at least one compressor pressurized gaseous fluid to be applied with a pressure between two Pressure levels alternately changed so that at a low pressure level Substances can enter the pressure chamber and by applying the higher pressure levels are conveyed in the desired direction of conveyance from the pressure chamber, wherein the Arrangement at least one conductive with a container by means of a conduit connected pressure chamber, in which the gaseous medium, through a valve controlled, is introduced, wherein the pressure in the pressure space, between two Pressure levels, alternately changed so that at low pressure level in Pressure vessel to enter the substances from the container in the pressure chamber, with between the container and the pressure chamber, a valve for opening or closing the connection between the container and the pressure chamber is arranged, and that by applying the higher pressure levels to the pressure chamber the substances in one with the pressure space conductive be conveyed connected derivative, wherein between the pressure chamber and the Deriving a valve to open or close the connection between the pressure
  • the Device according to the invention can be structurally extremely simple, since in Basically, as explained in more detail below, only one hollow body with an inlet and a Outlet must be created in which a substance to be delivered by means of a gaseous Pumped medium can be pressurized. This is a device for Promotion of flowable materials created that no special Zulaufvoraus GmbHen needed and has a simple structural design.
  • the line extends from the container to the outlet and has a branch to the pressure chamber, wherein the entry of the gaseous medium in the pressure chamber in the use position of the Device above and the entry of substances from the line ago in the use position of the Device is arranged below, bringing a further simplification in the construction of inventive device has succeeded.
  • valve for opening or closing the connection between the container and the pressure chamber, a check valve, the one Outlet opening of the container when one occurs in the arrangement against the container closes directed flow.
  • valve for opening or closing the Connection between the pressure chamber and the discharge a check valve, which the Discharge when one occurs in the arrangement against the container or against the Pressure chamber directed flow closes.
  • the check valve has a spherical or conical closing body, thus choosing the simplest and most effective option of a check valve is.
  • the compressor directs the gaseous conveying medium in a direction of flow the gaseous medium after the compressor connected to this Pressure vessel.
  • the valve is intended to control the introduction of the gaseous medium arranged in the pressure space between the pressure vessel and the pressure chamber.
  • the arrangement has a connection between the discharge and the compressor for the gaseous medium in, in the another valve for controlling the introduction of the gaseous medium is arranged in the derivative.
  • the substances in the arrangement pressurized by the gaseous medium with a pressure between two pressure levels are alternately changed so that at a low pressure level, in which there is a negative pressure, the substances sucked in and by applying the higher Pressure levels, in which an overpressure prevails, promoted in the desired direction of conveyance become. Since the gaseous medium to be sucked for compacting must, with this measure, this already existing negative pressure to promote the substances used, in particular for accelerating the filling of the pressure chamber with a new amount of substance to be delivered.
  • the preferred embodiment of the invention is preferably designed so that the pressure in the pressure space alternately changes between two pressure levels is that at the low pressure level in the pressure vessel, in which a negative pressure prevails, the substances from the conductively connected to this pressure chamber container in the Sucked pressure chamber and by applying the higher pressure level, in which an overpressure prevails, is conveyed into the discharge connected to the pressure chamber.
  • the inventive Device works in two bars. In the first measure, by applying of the negative pressure, substances are sucked into the pressure chamber and in the second cycle these Substances by applying an overpressure from the pressure chamber in the desired direction promoted.
  • the arrangement has a Ver Bond between the pressure chamber and a suction line of the compressor, wherein the Suction line of the compressor in the flow direction of the gaseous medium after the branch for connection with the valve further controlled with a valve Input of the pressure chamber another valve to open or close the Suction line to the environment has.
  • the gaseous medium is air, which is the most common Gas is used to promote the substances.
  • the substances to be conveyed consist of gases, liquids or Solids and / or mixtures thereof, which is the great variety of applications of the invention Device shows.
  • the substances are optionally with solids and / or aerated, optionally hot and / or foaming liquid, which shows that even a promotion of a special additives because of possible corrosion causing liquid is possible with the device according to the invention. It is also shown that with the device according to the invention even at higher Temperatures and the presence of solid particles, the risk of occurrence Cavitation is completely avoided.
  • the device according to the invention arranged in a dishwasher.
  • a dishwasher is the Promoted substance known to be a cleaning liquid, possibly with cleaning or Rinsing agents are mixed and possibly also contaminated with removed food residues, is acted upon in the dishwasher to be cleaned Good.
  • the cleaning fluid with the inventive Device in a dishwasher particularly good cleaning results be achieved.
  • the invention described further relates to a dishwasher in the one device for conveying liquid according to at least one of the previously discussed Claims is arranged.
  • the inventive device for Promotion of substances shown on a device for the conveyance of liquids and described.
  • a device according to the invention 1, 1 ', 1 "for conveying substances in the three shown and described embodiments has an arrangement 10, 10 ', 10 ", in which the liquid is acted upon by a pressurized gaseous medium is, wherein in the three embodiments shown and described according to the invention the liquid in the assembly 10, 10 ', 10 "through the gaseous medium is pressurized, alternating between two pressure levels is changed so that at a low pressure level, the liquid nachfchtt and promoted by applying the higher pressure level in the desired conveying direction becomes.
  • a pressurized gaseous medium It is possible a liquid largely without moving mechanical aggregates to promote.
  • the device requires no technically complicated feed conditions. In practice, it has been found that such a device according to the invention has no difficulties.
  • the gaseous medium is shown in FIGS Embodiments provided by means of a compressor 2 under pressure.
  • a pressure vessel 4 In the flow direction the gaseous medium after the compressor 2, that is at a Pressure outlet 3 of the compressor 2, a pressure vessel 4 is connected, in which the gaseous fluid is introduced and stored.
  • the gaseous medium controlled by a valve 5, initiated.
  • This valve 5 for controlling the introduction of the gaseous medium in the pressure chamber 11 is in the three embodiments shown and described in a connecting line 21 between the pressure vessel 4 and an inlet 20 of the arranged gaseous medium in the pressure chamber 11.
  • a drain 12 is conductively connected.
  • a valve 16 for opening and Close the derivative 12 arranged, which, in the three shown and described Embodiments, a check valve with a spherical or conical Closing body is the discharge 12 in the event of a against the container 9 or against closes the pressure chamber 11 directed flow.
  • the pressure chamber 11 has a another with a valve 17 controlled input 18, to a vent line 19 is connected.
  • the three embodiments shown and described is continue together, that the inlet 20 of the gaseous medium in the pressure chamber 11 in the use position, i. from a frontal view of the figures 1 to 4, above and the Entrance of the conduit 13, i. the branch 14, is arranged below.
  • the liquid - in the pressure chamber 11 by the gaseous medium subjected to a pressure alternating between two pressure levels is changed so that at a low pressure level of the substance - in the illustrated embodiment the liquid - flows in and by applying the higher pressure level in the desired conveying direction is promoted.
  • the valves 5, 16 and 17 are initially closed.
  • the liquid extends due to the conductive connection between the container 9 and the pressure chamber 11, wherein in this embodiment shown in Fig. 1, the connection with the container. 9 is arranged below its liquid level N1, in both containers 9 and 11 up to the liquid level N1.
  • the valve 5 is under an overpressure standing gaseous fluid introduced into the pressure chamber 11, whereby the liquid is displaced to a lower level N2.
  • the valve 15 is closed and the valve 16 is opened, so that the liquid further into the discharge 12th penetrates, with an equal amount of liquid from the discharge line 12 into corresponding Consumer is moved.
  • the valve 5 is closed and the valve 17 is opened, whereby the located in the pressure chamber 11 gaseous fluid through the vent line 19 escapes.
  • valve 15 Now open the valve 15 so that liquid from the container 9 can flow into the pressure chamber 11.
  • the valve 16 is, in the shown and described Embodiment, due to the weight of the ball of the valve and the above closed the ball of the valve 16 in the discharge line 12 amount of substance. This process is repeated as long as promotion is needed.
  • connection 22 between the Discharge 12 and the compressor 2 for the gaseous medium, in the illustrated embodiment between the drain 12 and the pressure vessel 4.
  • connection 22 is another valve 6 for controlling the introduction of the gaseous medium disposed in the drain 12, wherein the connecting line 21 between the Pressure vessel 4 and the inlet 20 of the gaseous medium in the pressure chamber 11, as in the embodiment shown in Fig. 1, a valve 5 for controlling the Having introduced the gaseous medium in the pressure chamber 11.
  • the substance according to the invention is shown in FIG Embodiment, the liquid - in the assembly 10 'by the gaseous Delivery medium pressurized with a pressure which alternately between two pressure levels is changed so that at a low pressure level of the substance - in the shown Embodiment, the liquid - flows and by applying the higher pressure levels is conveyed in the desired conveying direction, wherein the application of the higher Pressure levels for acting on the substance - in the illustrated embodiment of the Liquid - with an overpressure more than once, in the described embodiment twice, at short intervals.
  • valves 5, 6, 16 and 17 are initially closed, the valve 8 is open.
  • the Liquid extends due to the conductive connection between the container 9 and the pressure chamber 11, wherein also in this embodiment, the connection with the container 9 is arranged below the liquid level N1, in both containers up to the liquid level N1.
  • the valve 5 is under an overpressure standing gaseous fluid introduced into the pressure chamber 11, whereby the liquid is displaced to the lower liquid level N2.
  • This is the Valve 15 is closed and the valve 16 is opened so that the liquid continues into the drain 12 penetrates, with an equal amount of liquid from the discharge 12 to corresponding Consumers is moved.
  • valve 5 is closed and the other Valve 6 to control the introduction of the gaseous fluid into the drain 12 is opened - or it is, in reverse order, first the other valve. 6 opened to control the introduction of the gaseous medium in the discharge line 12 and then the valve 5 is closed -, whereby in both cases the gaseous medium is conducted into the discharge line 12 and the second application of the higher pressure level for charging the substance - in the illustrated embodiment, the liquid - With an overpressure, whereby a reprinting of the located in the derivative 12 Liquid is effected so that again liquid to corresponding Consumers is moved.
  • the valve 16 is closed. Now also the valve 6 closed and the valve 17 is opened, whereby the located in the pressure chamber 11 gaseous fluid escapes through the vent line 19. Now the valve opens 15, so that liquid from the container 9 can flow into the pressure chamber 11. The Valve 16 is held in the closed position. This process is now needed as long as promotion will be repeated.
  • the arrangement 10 in addition to the arrangement shown in Fig. 2 and described a Connection 23 between the pressure chamber 11 and a suction line 7 of the compressor. 2 on, wherein the suction line 7 of the compressor 2 in the flow direction of the gaseous Delivery medium after the branch for the connection 23 with the valve 17 of the other with a valve 17 controlled input 20 of the pressure chamber 11 another valve 8 to open or close the suction line 7 from the environment.
  • the substance according to the invention is shown in FIG Embodiment, the liquid - through the gaseous fluid with a Pressure applied alternately between two pressure levels so is that at a low pressure level of the substance - in the illustrated embodiment the liquid - flows and by applying the higher pressure level into the desired Conveying direction is promoted, but in the arrangement shown in Fig. 3 10 "at the low pressure level, a negative pressure prevails, so that the substance - in the shown Embodiment, the liquid - is sucked and wherein in the in Fig. 3rd shown arrangement 10 "when applying the higher pressure level, an overpressure prevails.
  • connection 23 Alternatively to the above-mentioned connection with a suction line 7 of the compressor. 2 Of course it is also possible the required vacuum with an additional compressor to generate and connect this to the connection 23.
  • valves 5, 6, 8 and 16 are initially closed, the valves 15 and 17 are open.
  • the liquid extends in the liquid container 9 to the liquid level N1 and in the pressure chamber 11 due to the below described suction function of the negative pressure to the much higher liquid level N1 "by closing the valve 17 and simultaneously opening the valve 5 is the under pressure gaseous medium in the pressure chamber 11 introduced, whereby the liquid displaces up to a lower liquid level N2 becomes.
  • the valve 15 is closed and the valve 16 is opened, so that the Liquid continues to penetrate into the liquid discharge 12, wherein an equal amount Liquid from the liquid discharge 12 to corresponding liquid consumers is moved.
  • the valve 8 is opened so that the compressor 2 can suck in gas and a pressure and flow compensation of the gas he follows.
  • valve 5 is closed and the further valve 6 for controlling the introduction of the gaseous Medium to be opened in the derivative 12 - or it can, in reverse First, the additional valve 6 to control the introduction of the gaseous Opened medium in the discharge line 12 and then the valve 5 is closed -, which in both alternative program steps, the gaseous medium is conducted into the discharge line 12 and the second application of the higher pressure level for acting on the substance - in the illustrated embodiment, the liquid - with an overpressure occurs, whereby a reprinting of the 12 located in the derivative Liquid is effected, so that again liquid to corresponding consumers is moved.
  • valve 16 is closed. Now also the valve 6 and the valve 8 are closed and the valve 17 is opened, whereby the located in the pressure chamber 11 gaseous Pumped fluid via the vent line 19 and the suction line 7 to the compressor 2 is passed and a negative pressure in the pressure chamber 11 is formed.
  • the negative pressure or, in the event that the valve 15 is not a check valve by external control now opens the valve 15 so that liquid through the in the pressure chamber 11th prevailing negative pressure from the container 9 is sucked into the pressure chamber 11.
  • the Valve 16 is held in the closed position. Now the valve 17 is closed and at the same time the valve 8 is opened again. This process is now needed as long as promotion will be repeated.
  • valve 8 instead of the valve 8 also a pipe constriction, such.
  • a pipe constriction such as an aperture provided or such a valve Only throttled in place of the whole closing and opening or continue to open.
  • Fig. 4 is a dishwasher 25, in the embodiment shown a Household dishwasher shown in the inventive device "1 for Promotion of substances in the shown in Fig. 3 and described, preferred Embodiment is arranged.
  • the gaseous medium conveyed air and the substance to be conveyed a cleaning liquid, subjected to the to be cleaned in the dishwasher 25 Good is water, which may be mixed with cleaning or rinse aid and possibly is also contaminated with worn food leftovers.
  • the container 9 of the device 1 " is at the dishwasher 25 of the lowest Section of a washing container 26 is formed, which usually sump or drain pan is called and in which the filled of the in crockery baskets 27, 28, Not to be cleaned, not shown, e.g. Cutlery, plates, cups, glasses, etc., returning Cleaning fluid collects.
  • the cleaning liquid is in the arrangement shown in FIG. 4 and described by means of the device 1 ", as described for Fig. 4, in the with the leads conveyed to the spray arms 29, 30 connected discharge 12.
  • the invention provides a device for conveying flowable substances, which requires no special Zulaufausaus GmbHen and a simple constructive Structure has.

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  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Transmission Of Braking Force In Braking Systems (AREA)
  • Threshing Machine Elements (AREA)

Abstract

The aim of the invention is to provide a device (1, 1', 1") for conveying flowing substances which does not require any special delivery conditions for operation compared to conventional pumps and which has a simple construction. To this end, the invention provides for an arrangement (10, 10', 10") in which the substances are subjected to pressure through a gaseous conveying medium, said pressure being switched alternately between two pressure levels in such a way that at a low pressure level, the substances enter the arrangement (10, 10', 10") and at a high pressure level, the substances are conveyed in the desired direction of travel.

Description

Die Erfindung betrifft eine Vorrichtung zur Förderung von flieĂŸfähigen Stoffen und/oder Stoffgemischen.The invention relates to a device for conveying flowable materials and / or Mixtures.

Ăœblicherweise werden flieĂŸfähige Stoffe, wie z. B. FlĂ¼ssigkeiten, feinkörnige SchĂ¼ttgĂ¼ter oder Gemische aus Feststoffpartikeln mit FlĂ¼ssigkeiten oder Gasen, mittels Pumpen verschiedenster Bauarten transportiert, unter anderem durch Kreiselpumpen, Kolbenpumpen oder Membranpumpen etc..Usually, flowable substances, such as. As liquids, fine-grained bulk materials or mixtures of solid particles with liquids or gases, by means of pumps of various kinds Types transported, including centrifugal pumps, piston pumps or diaphragm pumps etc ..

Beim Einsatz von Kreiselpumpen tritt durch die Zentrifugalwirkung eine Entmischung von Gasen bzw. Feststoffpartikeln auf, wodurch die Fördermenge und der Wirkungsgrad der Pumpe beeinträchtigt werden.When using centrifugal pumps occurs by the centrifugal effect segregation of Gas or solid particles, whereby the flow rate and efficiency of Pump be affected.

Bei Ă¼blichen Pumpverfahren, z.B. mit gewöhnlichen Pumpen, muĂŸ z.B. eine FlĂ¼ssigkeit unter einem hydrostatischen Druck aus einem Vorlagebehälter in die Pumpe einflieĂŸen. Der aktive, bewegte Teil der Pumpe, sei es das Laufrad, ein Kolben oder eine Membrane erzeugt einen Unterdruck und saugt die FlĂ¼ssigkeit in die Pumpe ein. Dieser Unterdruck wird durch den Zulauf der FlĂ¼ssigkeit begrenzt. Wenn der hydrostatische Druck auf der Saugseite nicht ausreicht, eine ausreichende Menge an FlĂ¼ssigkeit in die Pumpe einzudrĂ¼cken und den oben genannten Unterdruck zu begrenzen, kann der sich am Saugstutzen einstellende Absolutdruck unter den Dampfdruck der FlĂ¼ssigkeit sinken, was zur Folge hat, daĂŸ die FlĂ¼ssigkeit verdampft und nunmehr Dampf, anstelle oder neben der FlĂ¼ssigkeit, in die Pumpe gelangt. Dies hat zur Folge, daĂŸ die Förderleistung auf einen Bruchteil der vorgesehenen Fördermenge absinkt. Ferner stellt sich bei diesem - Kavitation genannten - Vorgang eine Ă¼bermĂ¤ĂŸige Geräuschentwicklung und eine Schädigung der Pumpe ein, die von der Kondensation der Dampfblasen hervorgerufen wird.In conventional pumping methods, e.g. with ordinary pumps, e.g. a liquid flow under a hydrostatic pressure from a storage tank into the pump. The active, moving part of the pump, be it the impeller, a piston or a diaphragm creates a vacuum and sucks the liquid into the pump. This negative pressure is limited by the inflow of the liquid. When the hydrostatic pressure on the Suction side is insufficient to press a sufficient amount of liquid into the pump and to limit the above-mentioned negative pressure, which can be at the suction nozzle adjusting absolute pressure drops below the vapor pressure of the liquid, resulting in has that the liquid evaporates and now steam, instead of or in addition to the liquid, gets into the pump. This has the consequence that the delivery rate to a fraction the planned delivery rate drops. Furthermore, in this - called cavitation - Process of excessive noise and damage to the Pump, which is caused by the condensation of the vapor bubbles.

Da sich der Dampfdruck bei höheren Temperaturen und beim Vorhandensein von Feststoffpartikeln, sogenannten Keimen, erhöht, d.h. in die Nähe des Atmosphärendrucks verschoben wird, treten solche Erscheinungen beim Pumpen von warmen und verschmutzten FlĂ¼ssigkeiten, wie dies z.B. in GeschirrspĂ¼lmaschinen der Fall ist, besonders stark und häufig auf, was zu den oben beschriebenen schweren Störungen des Betriebes fĂ¼hren kann.Since the vapor pressure at higher temperatures and in the presence of solid particles, so-called germs, increased, i. near the atmospheric pressure is shifted, such phenomena occur when pumping warm and polluted Liquids, e.g. in dishwashers, especially strong and frequent, resulting in the above described severe disruptions of the operation can lead.

Zur Vermeidung dieser Nachteile, wird versucht, wie oben schon beschrieben, die FlĂ¼ssigkeit unter einem eigenen, ausreichenden hydrostatischen Druck, z.B. aus einem Vorlagebehälter, in die Pumpe einflieĂŸen zu lassen. Hierzu ist auf der Saugseite der Pumpe, z.B. in einem Vorlagebehälter, eine Mindesthöhe der FlĂ¼ssigkeit, die sogenannte NPSH (Net Positive Suction Head), einzuhalten, wodurch der notwendige hydrostatische Druck entstehen kann. Diese - Ă¼blicherweise Zulaufhöhe genannte - Mindesthöhe der FlĂ¼ssigkeit kann allerdings nicht immer gewährleistet werden, weil dies z.B. räumlich nicht möglich ist oder weil eine dafĂ¼r benötigte Vorlage einer zusätzlichen Masse an FlĂ¼ssigkeit unerwĂ¼nscht ist.To avoid these disadvantages, it is attempted, as already described above, the liquid under its own sufficient hydrostatic pressure, e.g. from a storage container, to flow into the pump. For this purpose, on the suction side of the pump, e.g. in a storage tank, a minimum level of liquid, the so-called NPSH (Net Positive Suction Head), keeping the necessary hydrostatic pressure can arise. This - usually called inlet height - minimum height of However, liquid can not always be guaranteed because this is e.g. not spatially is possible or because a required template of an additional mass of liquid is undesirable.

An der US 3,102,666 ist ein Verfahren zum Fördern von Wasser in einer GeschirrspĂ¼lmaschine und eine GeschirrspĂ¼lmaschine zur DurchfĂ¼hrung des Verfahrens bekannt. Im einem vertikal in einer GeschirrspĂ¼lmaschine angeordneten RohrstĂ¼ck mit einer Ă–ffnung am oberen Ende zur Beaufschlagung des SpĂ¼lguts mit Wasser befindet sich an einem mit dem RöhrstĂ¼ck verbundenen Körper eine Ă–ffnung. Ăœber diese Ă–ffnung strömt Wasser in das RohrstĂ¼ck und in den Körper. Ăœber eine weitere Ă–ffnung am Körper mit einem Magnetventil kann Ă¼ber diese weitere Ă–ffnung mit Druckluft das im RohrstĂ¼ck und im Körper befindliche Wasser herausgeblasen und somit das SpĂ¼lgut mit Wasser beaufschlagt werden.US 3,102,666 discloses a method of conveying water in one Dishwasher and a dishwasher for performing the method known. In a vertically arranged in a dishwasher pipe with an opening at the upper end for loading the items to be washed with water an opening on a body connected to the tube. About this opening water flows into the pipe section and into the body. About another opening on the body with a solenoid valve can through this further opening with compressed air in the pipe section and water in the body blown out and thus the dishes with water be charged.

Aus der DE 30 18 872 A1 ist ein Verfahren zum Reinigen von Gegenständen und eine Vorrichtung zur DurchfĂ¼hrung des Verfahrens bekannt. Die Beaufschlagung der DĂ¼sen im Waschraum, in denen das zu reinigenden Gut angeordnet ist, kann Ă¼ber eine herkömmliche Pumpe oder direkt aus einen Vorratsbehälter erfolgen. Der Vorratsbehälter ist mit ReinigungsflĂ¼ssigkeit gefĂ¼llt, welche Ă¼ber eine Leitung mit einem steuerbaren Ventil und einem Sterilfilter in diesen Vorratsraum gelangt.
Ăœber eine Leitung mit einem steuerbaren Ventil und einer Druckluftquelle kann ein Luftraum im Vorratsbehälter oberhalb der ReinigungsflĂ¼ssigkeit mit Druckluft beaufschlagt werden. In den Vorratsbehälter ragt eine Leitung hinein, deren Ă–ffnung in die ReinigungsflĂ¼ssigkeit mĂ¼ndet. Durch Ă–ffnen eines steuerbaren Ventils, während der Luftraum im Vorratsbehälter sich unter Druck befindet, strömt die ReinigungsflĂ¼ssigkeit Ă¼ber diese Leitung direkt zu den DĂ¼sen im Waschraum. Somit ist nur eine drucklose Zufuhr der ReinigungsflĂ¼ssigkeit in den unter Druck stehenden Vorratsbehälter ohne einen zusätzlichen Behälter offenbart. AuĂŸerdem weist der Vorratsbehälter auch kein Ventil zum EntlĂ¼ften der Vorratsbehälter auf.
From DE 30 18 872 A1 a method for cleaning objects and a device for carrying out the method is known. The admission of the nozzles in the washroom, in which the material to be cleaned is arranged, can take place via a conventional pump or directly from a storage container. The reservoir is filled with cleaning fluid, which passes through a line with a controllable valve and a sterile filter in this pantry.
Via a line with a controllable valve and a compressed air source, an air space in the reservoir above the cleaning fluid can be pressurized with compressed air. In the reservoir, a pipe protrudes, the opening opens into the cleaning liquid. By opening a controllable valve, while the air space in the reservoir is under pressure, the cleaning fluid flows via this line directly to the nozzles in the washroom. Thus, only a non-pressurized supply of the cleaning liquid is disclosed in the pressurized reservoir without an additional container. In addition, the reservoir also has no valve for venting the reservoir.

Der Erfindung liegt daher die Aufgabe zugrunde, eine Vorrichtung zur Förderung von flieĂŸfähigen Stoffen zu schaffen, die bei einem einfachen konstruktiven Aufbau Ă¼ber eine verbesserte Funktionsfähigkeit verfĂ¼gt.The invention is therefore based on the object, a device for the promotion of to create flowable materials that in a simple structural design over a improved functionality.

Diese Aufgabe wird erfindungsgemĂ¤ĂŸ dadurch gelöst, dass eine Vorrichtung zur Förderung von flieĂŸfähigen Stoffen eine Anordnung mit einem Druckraum aufweist, in dem die Stoffe durch ein von wenigstens einem Verdichter unter Druck gestelltes gasförmiges Fördermedium mit einem Druck beaufschlagt werden, der zwischen zwei Druckniveaus abwechselnd so verändert wird, dass bei einem niedrigen Druckniveau die Stoffe in den Druckraum eintreten können und durch Anlegen des höheren Druckniveaus in die gewĂ¼nschte Förderrichtung aus dem Druckraum gefördert werden, wobei die Anordnung wenigstens einen mit einem Behälter mittels einer Leitung leitend verbundenen Druckraum, in den das gasförmige Fördermedium, durch ein Ventil gesteuert, eingeleitet wird, aufweist, wobei der Druck in dem Druckraum, zwischen zwei Druckniveaus, abwechselnd so verändert wird, dass beim niedrigen Druckniveau im Druckbehälter die Stoffe aus dem Behälter in den Druckraum eintreten, wobei zwischen dem Behälter und dem Druckraum ein Ventil zum Ă–ffnen oder SchlieĂŸen der Verbindung zwischen dem Behälter und dem Druckraum angeordnet ist, und dass durch Anlegen des höheren Druckniveaus an den Druckraum die Stoffe in eine mit dem Druckraum leitend verbundene Ableitung gefördert werden, wobei zwischen dem Druckraum und der Ableitung ein Ventil zum Ă–ffnen oder SchlieĂŸen der Verbindung zwischen dem Druckraum und der Ableitung angeordnet ist und dass der Druckraum einen weiteren mit einem Ventil gesteuerten Eingang aufweist.This object is achieved in that a device for Promotion of flowable materials having an arrangement with a pressure chamber, in the substances by a of at least one compressor pressurized gaseous fluid to be applied with a pressure between two Pressure levels alternately changed so that at a low pressure level Substances can enter the pressure chamber and by applying the higher pressure levels are conveyed in the desired direction of conveyance from the pressure chamber, wherein the Arrangement at least one conductive with a container by means of a conduit connected pressure chamber, in which the gaseous medium, through a valve controlled, is introduced, wherein the pressure in the pressure space, between two Pressure levels, alternately changed so that at low pressure level in Pressure vessel to enter the substances from the container in the pressure chamber, with between the container and the pressure chamber, a valve for opening or closing the connection between the container and the pressure chamber is arranged, and that by applying the higher pressure levels to the pressure chamber the substances in one with the pressure space conductive be conveyed connected derivative, wherein between the pressure chamber and the Deriving a valve to open or close the connection between the pressure chamber and the discharge is arranged and that the pressure chamber another with a valve having controlled input.

Durch das Anlegen des niedrigen Druckes können Stoffe trotz niedriger Zulaufhöhe in ausreichender Menge angesaugt werden. Durch die folgende Beaufschlagung mit höherem Druck erfolgt die Förderung der Stoffe zwangsweise durch Verdrängung. Die erfindungsgemĂ¤ĂŸe Vorrichtung kann konstruktiv äuĂŸerst einfach aufgebaut werden, da im Grunde, wie unten näher erläutert, nur ein Hohlkörper mit einem Einlass und einem Auslass geschaffen werden muss, in der ein zu fördernder Stoff mittels eines gasförmigen Fördermediums unter Druck gesetzt werden kann. Damit ist eine Vorrichtung zur Förderung von flieĂŸfähigen Stoffen geschaffen, die keine besonderen Zulaufvoraussetzungen benötigt und die einen einfachen konstruktiven Aufbau aufweist. By applying the low pressure substances can despite low inlet height in Sufficient amount are sucked. By the following admission with higher pressure is the promotion of substances forced by displacement. The Device according to the invention can be structurally extremely simple, since in Basically, as explained in more detail below, only one hollow body with an inlet and a Outlet must be created in which a substance to be delivered by means of a gaseous Pumped medium can be pressurized. This is a device for Promotion of flowable materials created that no special Zulaufvoraussetzungen needed and has a simple structural design.

Mit diesem sehr einfachen Aufbau der erfindungsgemĂ¤ĂŸen Vorrichtung, die auĂŸer den genannten vier Ventilen und dem Verdichter fĂ¼r das gasförmige Fördermedium keine bewegten mechanischen Aggregate aufweist, ist eine einfache Möglichkeit zur Beaufschlagung der zu fördernden Stoffe geschaffen, wobei der Einsatz von direkt auf die zu fördernden Stoffe wirkender mechanischer Mittel vollständig vermieden wird, wodurch die erfindungsgemĂ¤ĂŸe Vorrichtung wenig reparaturanfällig ist und einen einfachen konstruktiven Aufbau aufweist.With this very simple structure of the device according to the invention, except the none mentioned four valves and the compressor for the gaseous medium Moving mechanical aggregates is an easy way to Creation of materials to be promoted, whereby the use of directly on the substances to be conveyed is completely avoided, thereby the device according to the invention is less prone to repair and a simple has constructive structure.

Nach einer bevorzugten AusfĂ¼hrungsform der Erfindung erstreckt sich die Leitung von dem Behälter bis zur Ableitung und weist eine Abzweigung zu dem Druckraum auf, wobei der Eintritt des gasförmigen Fördermediums in den Druckraum in Gebrauchslage der Vorrichtung oben und der Eintritt der Stoffe von der Leitung her in Gebrauchslage der Vorrichtung unten angeordnet ist, womit eine weitere Vereinfachung im Aufbau der erfindungsgemĂ¤ĂŸen Vorrichtung gelungen ist.According to a preferred embodiment of the invention, the line extends from the container to the outlet and has a branch to the pressure chamber, wherein the entry of the gaseous medium in the pressure chamber in the use position of the Device above and the entry of substances from the line ago in the use position of the Device is arranged below, bringing a further simplification in the construction of inventive device has succeeded.

In besonders vorteilhafter Weise ist das Ventil zum Ă–ffnen oder SchlieĂŸen der Verbindung zwischen dem Behälter und dem Druckraum ein RĂ¼ckschlagventil, das eine Austrittsöffnung des Behälters bei Auftreten einer in der Anordnung gegen den Behälter gerichteten Strömung verschlieĂŸt. Durch den Einsatz eines RĂ¼ckschlagventils an dieser Stelle der Anordnung wird die Steuerung der erfindungsgemĂ¤ĂŸen Vorrichtung gegenĂ¼ber der Verwendung eines z. B. Elektromagnetventils wesentlich vereinfacht.In a particularly advantageous manner, the valve for opening or closing the connection between the container and the pressure chamber, a check valve, the one Outlet opening of the container when one occurs in the arrangement against the container closes directed flow. By using a check valve on this Position of the arrangement is compared with the control of the device according to the invention the use of a z. B. solenoid valve significantly simplified.

Ebenso ist in besonders vorteilhafter Weise das Ventil zum Ă–ffnen oder SchlieĂŸen der Verbindung zwischen dem Druckraum und der Ableitung ein RĂ¼ckschlagventil, das die Ableitung bei Auftreten einer in der Anordnung gegen den Behälter oder gegen den Druckraum gerichteten Strömung verschlieĂŸt. Durch den Einsatz eines RĂ¼ckschlagventils auch an dieser Stelle der Anordnung wird die Steuerung der erfindungsgemĂ¤ĂŸen Vorrichtung gegenĂ¼ber der Verwendung eines z.B. Elektromagnetventilen wesentlich vereinfacht. Likewise, in a particularly advantageous manner, the valve for opening or closing the Connection between the pressure chamber and the discharge a check valve, which the Discharge when one occurs in the arrangement against the container or against the Pressure chamber directed flow closes. By using a check valve Also at this point of the arrangement is the control of the invention Device against the use of e.g. Solenoid valves essential simplified.

Bevorzugt weist das RĂ¼ckschlagventil einen kugel- oder kegelförmigen SchlieĂŸkörper auf, womit die einfachste und zugleich wirksamste Möglichkeit eines RĂ¼ckschlagventil gewählt ist.Preferably, the check valve has a spherical or conical closing body, thus choosing the simplest and most effective option of a check valve is.

Vorteilhafterweise leitet der Verdichter das gasförmige Fördermedium in einen in Strömungsrichtung des gasförmigen Fördermediums nach dem Verdichter an diesen angeschlossenen Druckbehälter ein. Mit dieser Vorratshaltung an unter Druck stehendem gasförmigem Fördermedium wird der dauernde ununterbrochene Betrieb der erfindungsgemĂ¤ĂŸen Vorrichtung gewährleistet.Advantageously, the compressor directs the gaseous conveying medium in a direction of flow the gaseous medium after the compressor connected to this Pressure vessel. With this inventory of pressurized gaseous Conveying medium is the continuous uninterrupted operation of the invention Device guaranteed.

BestimmungsgemĂ¤ĂŸ ist das Ventil zur Steuerung der Einleitung des gasförmigen Fördermediums in den Druckraum zwischen dem Druckbehälter und dem Druckraum angeordnet.The valve is intended to control the introduction of the gaseous medium arranged in the pressure space between the pressure vessel and the pressure chamber.

Nach einer vorteilhaften AusfĂ¼hrungsform der Erfindung weist die Anordnung eine Verbindung zwischen der Ableitung und dem Verdichter fĂ¼r das gasförmige Fördermedium auf, in der ein weiteres Ventil zur Steuerung der Einleitung des gasförmigen Fördermediums in die Ableitung angeordnet ist. Mit dieser einfachen Verbindung mit einem weiteren Ventil ist es möglich, die erfindungsgemĂ¤ĂŸe Vorrichtung noch effektiver zu betreiben, da damit ein zusätzliches NachdrĂ¼cken der schon in die Ableitung geförderten Stoffe durchgefĂ¼hrt werden kann.According to an advantageous embodiment of the invention, the arrangement has a connection between the discharge and the compressor for the gaseous medium in, in the another valve for controlling the introduction of the gaseous medium is arranged in the derivative. With this simple connection with another Valve, it is possible to operate the device according to the invention even more effective because thus carried out an additional repressing the already promoted in the discharge substances can be.

Nach einer bevorzugten AusfĂ¼hrungsform der Erfindung werden die Stoffe in der Anordnung durch das gasförmige Fördermedium mit einem Druck beaufschlagt, der zwischen zwei Druckniveaus abwechselnd so verändert wird, daĂŸ bei einem niedrigen Druckniveau, bei dem ein Unterdruck herrscht, die Stoffe eingesaugt und durch Anlegen des höheren Druckniveaus, bei dem ein Ăœberdruck herrscht, in die gewĂ¼nschte Förderrichtung gefördert werden. Da das gasförmige Fördermedium zum Verdichten auch angesaugt werden muĂŸ, wird mit dieser MaĂŸnahme, dieser ohnehin vorhandene Unterdruck auch zur Förderung der Stoffe verwendet, insbesondere zur Beschleunigung des BefĂ¼llens des Druckraumes mit einer neuen, zu fördernden Stoffmenge.According to a preferred embodiment of the invention, the substances in the arrangement pressurized by the gaseous medium with a pressure between two pressure levels are alternately changed so that at a low pressure level, in which there is a negative pressure, the substances sucked in and by applying the higher Pressure levels, in which an overpressure prevails, promoted in the desired direction of conveyance become. Since the gaseous medium to be sucked for compacting must, with this measure, this already existing negative pressure to promote the substances used, in particular for accelerating the filling of the pressure chamber with a new amount of substance to be delivered.

Hierzu wird die bevorzugte AusfĂ¼hrungsform der Erfindung bevorzugt so gestaltet, daĂŸ der Druck in dem Druckraum zwischen zwei Druckniveaus abwechselnd so verändert wird, daĂŸ bei dem niedrigen Druckniveau im Druckbehälter, bei dem ein Unterdruck herrscht, die Stoffe aus dem mit diesem Druckraum leitend verbundenen Behälter in den Druckraum eingesaugt und durch Anlegen des höheren Druckniveaus, bei dem ein Ăœberdruck herrscht, in die mit dem Druckraum verbundene Ableitung gefördert wird. Die erfindungsgemĂ¤ĂŸe Vorrichtung arbeitet in zwei Takten. Im ersten Takt werden, durch Anlegen des Unterdrucks, Stoffe in den Druckraum eingesaugt und im zweiten Takt werden diese Stoffe durch Anlegen eines Ăœberdrucks aus dem Druckraum in die gewĂ¼nschte Richtung gefördert.For this purpose, the preferred embodiment of the invention is preferably designed so that the pressure in the pressure space alternately changes between two pressure levels is that at the low pressure level in the pressure vessel, in which a negative pressure prevails, the substances from the conductively connected to this pressure chamber container in the Sucked pressure chamber and by applying the higher pressure level, in which an overpressure prevails, is conveyed into the discharge connected to the pressure chamber. The inventive Device works in two bars. In the first measure, by applying of the negative pressure, substances are sucked into the pressure chamber and in the second cycle these Substances by applying an overpressure from the pressure chamber in the desired direction promoted.

Nach einer vorteilhaften AusfĂ¼hrungsform der Erfindung weist die Anordnung eine Ver bindung zwischen dem Druckraum und einer Saugleitung des Verdichters auf, wobei die Saugleitung des Verdichters in Strömungsrichtung des gasförmigen Fördermediums nach der Abzweigung fĂ¼r die Verbindung mit dem Ventil des weiteren mit einem Ventil gesteuerten Eingangs des Druckraumes ein weiteres Ventil zum Ă–ffnen oder SchlieĂŸen der Saugleitung gegenĂ¼ber der Umgebung aufweist. Mit dieser einfachen Verbindung und einem weiteren Ventil ist es auf einfache Art und Weise möglich, den ohnehin vorhandenen Unterdruck auch zur Förderung der Stoffe zu verwenden.According to an advantageous embodiment of the invention, the arrangement has a Ver Bond between the pressure chamber and a suction line of the compressor, wherein the Suction line of the compressor in the flow direction of the gaseous medium after the branch for connection with the valve further controlled with a valve Input of the pressure chamber another valve to open or close the Suction line to the environment has. With this simple connection and one another valve, it is possible in a simple manner, the already existing Vacuum also to promote the materials use.

Vorzugsweise ist das gasförmige Fördermedium Luft, womit das am Häufigsten vorkommende Gas zur Förderung der Stoffe verwendet wird.Preferably, the gaseous medium is air, which is the most common Gas is used to promote the substances.

Vorteilhafterweise bestehen die zu fördernden Stoffe aus Gasen, FlĂ¼ssigkeiten oder Feststoffen und/oder Gemischen derselben, was die groĂŸe Anwendungsvielfalt der erfindungsgemĂ¤ĂŸen Vorrichtung aufzeigt.Advantageously, the substances to be conveyed consist of gases, liquids or Solids and / or mixtures thereof, which is the great variety of applications of the invention Device shows.

In besonders vorteilhafter Weise sind die Stoffe eine gegebenenfalls mit Feststoffen und/oder mit Gasen befrachtete, gegebenenfalls heiĂŸe und/oder schäumende, FlĂ¼ssigkeit, was aufzeigt, daĂŸ sogar eine Förderung einer wegen besonderer Zusätze eventuell Korrosion verursachenden FlĂ¼ssigkeit mit der erfindungsgemĂ¤ĂŸen Vorrichtung möglich wird. Ebenso wird aufgezeigt, daĂŸ mit der erfindungsgemĂ¤ĂŸen Vorrichtung sogar bei höheren Temperaturen und beim Vorhandensein von Feststoffpartikeln die Gefahr des Auftretens der Kavitation vollständig vermieden wird.In a particularly advantageous manner, the substances are optionally with solids and / or aerated, optionally hot and / or foaming liquid, which shows that even a promotion of a special additives because of possible corrosion causing liquid is possible with the device according to the invention. It is also shown that with the device according to the invention even at higher Temperatures and the presence of solid particles, the risk of occurrence Cavitation is completely avoided.

Nach einer bevorzugten AusfĂ¼hrungsform der Erfindung ist die erfindungsgemĂ¤ĂŸe Vorrichtung in einer GeschirrspĂ¼lmaschine angeordnet. In einer GeschirrspĂ¼lmaschine ist der geförderte Stoff bekannterweise eine ReinigungsflĂ¼ssigkeit, die ggf. mit Reinigungs- oder KlarspĂ¼lmitteln vermischt und ggf. auch mit abgetragenen Speiseresten verschmutzt ist, mit der in der GeschirrspĂ¼lmaschine zu reinigendes Gut beaufschlagt wird. In der Praxis hat sich gezeigt, daĂŸ durch die Förderung der ReinigungsflĂ¼ssigkeit mit der erfindungsgemĂ¤ĂŸen Vorrichtung in einer GeschirrspĂ¼lmaschine besonders gute Reinigungsergebnisse erzielt werden.According to a preferred embodiment of the invention, the device according to the invention arranged in a dishwasher. In a dishwasher is the Promoted substance known to be a cleaning liquid, possibly with cleaning or Rinsing agents are mixed and possibly also contaminated with removed food residues, is acted upon in the dishwasher to be cleaned Good. In practice has been shown that by promoting the cleaning fluid with the inventive Device in a dishwasher particularly good cleaning results be achieved.

Die beschriebene Erfindung betrifft weiterhin eine GeschirrspĂ¼lmaschine in der eine Vorrichtung zur Förderung von FlĂ¼ssigkeit nach wenigstens einem der vorher besprochenen AnsprĂ¼che angeordnet ist.The invention described further relates to a dishwasher in the one device for conveying liquid according to at least one of the previously discussed Claims is arranged.

Die Erfindung wird nachstehend anhand den in der Zeichnung dargestellten AusfĂ¼hrungsbeispielen erläutert. Es zeigen

Fig. 1
eine schematische Darstellung der erfindungsgemĂ¤ĂŸen Vorrichtung nach einer vorteilhaften AusfĂ¼hrungsform der Erfindung,
Fig. 2
eine schematische Darstellung der erfindungsgemĂ¤ĂŸen Vorrichtung nach einer weiteren vorteilhaften AusfĂ¼hrungsform der Erfindung,
Fig. 3
eine schematische Darstellung der erfindungsgemĂ¤ĂŸen Vorrichtung nach einer bevorzugten AusfĂ¼hrungsform der Erfindung,
Fig. 4
eine schematische Darstellung einer Haushalt-GeschirrspĂ¼lmaschine mit der bevorzugten AusfĂ¼hrungsform der Erfindung und
Fig. 5
den zeitlichen Verlauf eines SprĂ¼himpules nach einer bevorzugten AusfĂ¼hrungsform der Erfindung.
The invention will be explained below with reference to the embodiments illustrated in the drawings. Show it
Fig. 1
a schematic representation of the device according to the invention according to an advantageous embodiment of the invention,
Fig. 2
a schematic representation of the device according to the invention according to a further advantageous embodiment of the invention,
Fig. 3
a schematic representation of the device according to the invention according to a preferred embodiment of the invention,
Fig. 4
a schematic representation of a domestic dishwasher with the preferred embodiment of the invention and
Fig. 5
the time course of a SprĂ¼himpules 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 named.

In den im folgenden AusfĂ¼hrungsbeispielen wird die erfindungsgemĂ¤ĂŸe Vorrichtung zur Förderung von Stoffen an einer Vorrichtung zur Förderung von FlĂ¼ssigkeiten gezeigt und beschrieben.In the following embodiments, the inventive device for Promotion of substances shown on a device for the conveyance of liquids and described.

Eine erfindungsgemĂ¤ĂŸe Vorrichtung 1, 1', 1" zur Förderung von Stoffen in den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen weist eine Anordnung 10, 10', 10" auf, in der die FlĂ¼ssigkeit durch ein unter Druck stehendes gasförmiges Fördermedium beaufschlagt wird, wobei in den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen erfindungsgemĂ¤ĂŸ die FlĂ¼ssigkeit in der Anordnung 10, 10', 10" durch das gasförmige Fördermedium mit einem Druck beaufschlagt wird, der zwischen zwei Druckniveaus abwechselnd so verändert wird, daĂŸ bei einem niedrigen Druckniveau die FlĂ¼ssigkeit nachflieĂŸt und durch Anlegen des höheren Druckniveaus in die gewĂ¼nschte Förderrichtung gefördert wird. Durch die Beaufschlagung mit einem unter Druck stehenden gasförmigen Fördermedium ist es möglich eine FlĂ¼ssigkeit weitgehend ohne bewegte mechanische Aggregate zu fördern. Die Vorrichtung benötigt keine technisch aufwendigen Zulaufbedingungen. In der Praxis hat sich gezeigt, daĂŸ eine derartige erfindungsgemĂ¤ĂŸe Vorrichtung keine Schwierigkeiten aufweist. Das gasförmige Fördermedium wird in den gezeigten AusfĂ¼hrungsbeispielen mittels eines Verdichters 2 unter Druck gestellt. In Strömungsrichtung des gasförmigen Fördermediums nach dem Verdichter 2, das heiĂŸt an einem Druckausgang 3 des Verdichters 2, ist ein Druckbehälter 4 angeschlossen, in den das gasförmige Fördermedium eingeleitet und bevorratet wird.A device according to the invention 1, 1 ', 1 "for conveying substances in the three shown and described embodiments has an arrangement 10, 10 ', 10 ", in which the liquid is acted upon by a pressurized gaseous medium is, wherein in the three embodiments shown and described according to the invention the liquid in the assembly 10, 10 ', 10 "through the gaseous medium is pressurized, alternating between two pressure levels is changed so that at a low pressure level, the liquid nachflieĂŸt and promoted by applying the higher pressure level in the desired conveying direction becomes. By applying a pressurized gaseous medium It is possible a liquid largely without moving mechanical aggregates to promote. The device requires no technically complicated feed conditions. In practice, it has been found that such a device according to the invention has no difficulties. The gaseous medium is shown in FIGS Embodiments provided by means of a compressor 2 under pressure. In the flow direction the gaseous medium after the compressor 2, that is at a Pressure outlet 3 of the compressor 2, a pressure vessel 4 is connected, in which the gaseous fluid is introduced and stored.

Weiterhin weist die Anordnung 10, 10', 10" in den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen einen mit einem Behälter 9 leitend verbundenen Druckraum 11 auf. In den Druckraum 11 wird das gasförmige Fördermedium, gesteuert durch ein Ventil 5, eingeleitet. Dieses Ventil 5 zur Steuerung der Einleitung des gasförmigen Fördermediums in den Druckraum 11 ist in den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen in einer Verbindungsleitung 21 zwischen dem Druckbehälter 4 und einem Eintritt 20 des gasförmigen Fördermediums in den Druckraum 11 angeordnet. Mit dem Druckraum 11 und dem Behälter 9 ist eine Ableitung 12 leitend verbunden. Wie aus den Fig. 1 bis 3 gut erkennbar ist, ist bei den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen eine Leitung 13 von dem Behälter 9 bis zur Ableitung 12 fortgesetzt, die eine Abzweigung 14 zu dem Druckraum 11 aufweist. Zwischen dem Behälter 9 und dem Druckraum 11 ist bei den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen ein Ventil 15 zum Ă–ffnen und SchlieĂŸen der Verbindung zwischen dem Behälter 9 und dem Druckraum 11 angeordnet, das, in den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen ein RĂ¼ckschlagventil mit einem kugel- oder kegelförmigen SchlieĂŸkörper ist, das einen FlĂ¼ssigkeitsauslaĂŸ aus dem Behälter 9 bei Auftreten einer gegen den Behälter 9 gerichteten Strömung verschlieĂŸt. Zwischen dem Druckraum 11 und der Ableitung 12 ist bei den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen ein Ventil 16 zum Ă–ffnen und SchlieĂŸen der Ableitung 12 angeordnet, das, in den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen, ein RĂ¼ckschlagventil mit einem kugel- oder kegelförmigen SchlieĂŸkörper ist, das die Ableitung 12 bei Auftreten einer gegen den Behälter 9 oder gegen den Druckraum 11 gerichteten Strömung verschlieĂŸt. Der Druckraum 11 weist einen weiteren mit einem Ventil 17 gesteuerten Eingang 18 auf, an den eine EntlĂ¼ftungsleitung 19 angeschlossen ist. Den drei gezeigten und beschriebenen AusfĂ¼hrungsbeispielen ist weiterhin gemeinsam, daĂŸ der Eintritt 20 des gasförmigen Fördermediums in den Druckraum 11 in Gebrauchslage, d.h. aus frontaler Sicht auf die Figuren 1 bis 4, oben und der Eintritt der Leitung 13, d.h. die Abzweigung 14, unten angeordnet ist.Furthermore, the arrangement 10, 10 ', 10 "in the three embodiments shown and described a conductively connected to a container 9 pressure chamber 11. In the pressure chamber 11, the gaseous medium, controlled by a valve 5, initiated. This valve 5 for controlling the introduction of the gaseous medium in the pressure chamber 11 is in the three embodiments shown and described in a connecting line 21 between the pressure vessel 4 and an inlet 20 of the arranged gaseous medium in the pressure chamber 11. With the pressure chamber 11 and the container 9, a drain 12 is conductively connected. As is good from Figs. 1 to 3 is recognizable, is in the three embodiments shown and described a Line 13 continued from the container 9 to the discharge line 12, the branch 14th has to the pressure chamber 11. Between the container 9 and the pressure chamber 11 is at the three embodiments shown and described a valve 15 to open and closing the connection between the container 9 and the pressure chamber 11, that, in the three embodiments shown and described a check valve with a spherical or conical closing body, which is a liquid outlet from the container 9 in the event of a directed against the container 9 Flow closes. Between the pressure chamber 11 and the derivative 12 is in the three shown and described embodiments, a valve 16 for opening and Close the derivative 12 arranged, which, in the three shown and described Embodiments, a check valve with a spherical or conical Closing body is the discharge 12 in the event of a against the container 9 or against closes the pressure chamber 11 directed flow. The pressure chamber 11 has a another with a valve 17 controlled input 18, to a vent line 19 is connected. The three embodiments shown and described is continue together, that the inlet 20 of the gaseous medium in the pressure chamber 11 in the use position, i. from a frontal view of the figures 1 to 4, above and the Entrance of the conduit 13, i. the branch 14, is arranged below.

Die Förderung von Stoffen nach einer vorteilhaften AusfĂ¼hrungsform der erfindungsgemĂ¤ĂŸen Vorrichtung wird in dem in Fig. 1 gezeigten AusfĂ¼hrungsbeispiel wie folgt ausgefĂ¼hrt:The promotion of substances according to an advantageous embodiment of the invention Device is carried out in the embodiment shown in Fig. 1 as follows:

ErfindungsgemĂ¤ĂŸ wird in der in Fig. 1 gezeigten Anordnung 10 der Stoff - im gezeigten AusfĂ¼hrungsbeispiel die FlĂ¼ssigkeit - in dem Druckraum 11 durch das gasförmige Fördermedium mit einem Druck beaufschlagt, der zwischen zwei Druckniveaus abwechselnd so verändert wird, daĂŸ bei einem niedrigen Druckniveau der Stoff - im gezeigten AusfĂ¼hrungsbeispiel die FlĂ¼ssigkeit - nachflieĂŸt und durch Anlegen des höheren Druckniveaus in die gewĂ¼nschte Förderrichtung gefördert wird.According to the invention in the arrangement 10 shown in Fig. 1, the substance - in the shown Embodiment, the liquid - in the pressure chamber 11 by the gaseous medium subjected to a pressure alternating between two pressure levels is changed so that at a low pressure level of the substance - in the illustrated embodiment the liquid - flows in and by applying the higher pressure level in the desired conveying direction is promoted.

Die Ventile 5, 16 und 17 sind anfänglich geschlossen. Die FlĂ¼ssigkeit erstreckt sich aufgrund der leitenden Verbindung zwischen dem Behälter 9 und dem Druckraum 11, wobei in diesem in Fig. 1 dargestellten AusfĂ¼hrungsbeispiel die Verbindung mit dem Behälter 9 unter dessen FlĂ¼ssigkeitsniveau N1 angeordnet ist, in beiden Behältern 9 und 11 bis zu dem FlĂ¼ssigkeitsniveau N1. Durch Ă–ffnen des Ventils 5 wird das unter einem Ăœberdruck stehende gasförmige Fördermedium in den Druckraum 11 eingeleitet, wodurch die FlĂ¼ssigkeit bis zu einem unteren Niveau N2 verdrängt wird. Dabei wird das Ventil 15 geschlossen und das Ventil 16 geöffnet, so daĂŸ die FlĂ¼ssigkeit weiter in die Ableitung 12 eindringt, wobei eine gleiche Menge FlĂ¼ssigkeit aus der Ableitung 12 in entsprechende Verbraucher bewegt wird. Nun wird das Ventil 5 geschlossen und das Ventil 17 geöffnet, wodurch das in dem Druckraum 11 befindliche gasförmige Fördermedium Ă¼ber die EntlĂ¼ftungsleitung 19 entweicht. Nun öffnet das Ventil 15, so daĂŸ FlĂ¼ssigkeit aus dem Behälter 9 in den Druckraum 11 nachströmen kann. Das Ventil 16 wird, in der gezeigten und beschriebenen AusfĂ¼hrungsform, aufgrund des Gewichts der Kugel des Ventils und der oberhalb der Kugel des Ventils 16 in der Ableitung 12 befindlichen Stoffmenge geschlossen. Dieser Vorgang wird nun solange Förderung benötigt wird wiederholt.The valves 5, 16 and 17 are initially closed. The liquid extends due to the conductive connection between the container 9 and the pressure chamber 11, wherein in this embodiment shown in Fig. 1, the connection with the container. 9 is arranged below its liquid level N1, in both containers 9 and 11 up to the liquid level N1. By opening the valve 5 is under an overpressure standing gaseous fluid introduced into the pressure chamber 11, whereby the liquid is displaced to a lower level N2. In this case, the valve 15 is closed and the valve 16 is opened, so that the liquid further into the discharge 12th penetrates, with an equal amount of liquid from the discharge line 12 into corresponding Consumer is moved. Now the valve 5 is closed and the valve 17 is opened, whereby the located in the pressure chamber 11 gaseous fluid through the vent line 19 escapes. Now open the valve 15 so that liquid from the container 9 can flow into the pressure chamber 11. The valve 16 is, in the shown and described Embodiment, due to the weight of the ball of the valve and the above closed the ball of the valve 16 in the discharge line 12 amount of substance. This process is repeated as long as promotion is needed.

In dem in Fig. 2 gezeigten AusfĂ¼hrungsbeispiel weist die Anordnung 10' zusätzlich zu der in Fig. 1 gezeigten und beschriebenen Anordnung 10 eine Verbindung 22 zwischen der Ableitung 12 und dem Verdichter 2 fĂ¼r das gasförmige Fördermedium, im gezeigten AusfĂ¼hrungsbeispiel zwischen der Ableitung 12 und dem Druckbehälter 4 auf. In der Verbindung 22 ist ein weiteres Ventil 6 zur Steuerung der Einleitung des gasförmigen Fördermediums in die Ableitung 12 angeordnet, wobei die Verbindungsleitung 21 zwischen dem Druckbehälter 4 und dem Eintritt 20 des gasförmigen Fördermediums in den Druckraum 11, wie in dem in Fig. 1 gezeigten AusfĂ¼hrungsbeispiel, ein Ventil 5 zur Steuerung der Einleitung des gasförmige Fördermediums in den Druckraum 11 aufweist.In the embodiment shown in Fig. 2, the arrangement 10 'in addition to the in Fig. 1 and described arrangement 10 a connection 22 between the Discharge 12 and the compressor 2 for the gaseous medium, in the illustrated embodiment between the drain 12 and the pressure vessel 4. In the connection 22 is another valve 6 for controlling the introduction of the gaseous medium disposed in the drain 12, wherein the connecting line 21 between the Pressure vessel 4 and the inlet 20 of the gaseous medium in the pressure chamber 11, as in the embodiment shown in Fig. 1, a valve 5 for controlling the Having introduced the gaseous medium in the pressure chamber 11.

Auch in der in Fig. 2 gezeigten Anordnung 10' wird erfindungsgemĂ¤ĂŸ der Stoff - im gezeigten AusfĂ¼hrungsbeispiel die FlĂ¼ssigkeit - in der Anordnung 10' durch das gasförmige Fördermedium mit einem Druck beaufschlagt, der zwischen zwei Druckniveaus abwechselnd so verändert wird, daĂŸ bei einem niedrigen Druckniveau der Stoff - im gezeigten AusfĂ¼hrungsbeispiel die FlĂ¼ssigkeit - nachflieĂŸt und durch Anlegen des höheren Druckniveaus in die gewĂ¼nschte Förderrichtung gefördert wird, wobei das Anlegen des höheren Druckniveaus zur Beaufschlagung des Stoffs - im gezeigten AusfĂ¼hrungsbeispiel der FlĂ¼ssigkeit - mit einem Ăœberdruck mehr als einmal, im beschriebenen AusfĂ¼hrungsbeispiel zweimal, in kurzen Abständen erfolgt.Also in the arrangement 10 'shown in FIG. 2, the substance according to the invention is shown in FIG Embodiment, the liquid - in the assembly 10 'by the gaseous Delivery medium pressurized with a pressure which alternately between two pressure levels is changed so that at a low pressure level of the substance - in the shown Embodiment, the liquid - flows and by applying the higher pressure levels is conveyed in the desired conveying direction, wherein the application of the higher Pressure levels for acting on the substance - in the illustrated embodiment of the Liquid - with an overpressure more than once, in the described embodiment twice, at short intervals.

Die Förderung von Stoffen nach einer weiteren vorteilhaften AusfĂ¼hrungsform der erfindungsgemĂ¤ĂŸen Vorrichtung wird in dem in Fig. 2 gezeigten AusfĂ¼hrungsbeispiel wie folgt ausgefĂ¼hrt:The promotion of substances according to a further advantageous embodiment of the invention Device becomes in the embodiment shown in Fig. 2 as follows run:

Die Ventile 5, 6, 16 und 17 sind anfänglich geschlossen, das Ventil 8 ist geöffnet. Die FlĂ¼ssigkeit erstreckt sich aufgrund der leitenden Verbindung zwischen dem Behälter 9 und dem Druckraum 11, wobei auch in diesem AusfĂ¼hrungsbeispiel die Verbindung mit dem Behälter 9 unter dessen FlĂ¼ssigkeitsniveau N1 angeordnet ist, in beiden Behältern bis zu dem FlĂ¼ssigkeitsniveau N1. Durch Ă–ffnen des Ventils 5 wird das unter einem Ăœberdruck stehende gasförmige Fördermedium in den Druckraum 11 eingeleitet, wodurch die FlĂ¼ssigkeit bis zu dem unteren FlĂ¼ssigkeitsniveau N2 verdrängt wird. Dabei wird das Ventil 15 geschlossen und das Ventil 16 geöffnet, so daĂŸ die FlĂ¼ssigkeit weiter in die Ableitung 12 eindringt, wobei eine gleiche Menge FlĂ¼ssigkeit aus der Ableitung 12 zu entsprechenden Verbrauchern bewegt wird. Nun wird das Ventil 5 geschlossen und das weitere Ventil 6 zur Steuerung der Einleitung des gasförmigen Fördermediums in die Ableitung 12 geöffnet - oder es wird, in umgekehrter Reihenfolge, zuerst das weitere Ventil 6 zur Steuerung der Einleitung des gasförmigen Fördermediums in die Ableitung 12 geöffnet und dann das Ventil 5 geschlossen -, wodurch in beiden Fällen das gasförmige Fördermedium in die Ableitung 12 geleitet wird und das zweite Anlegen des höheren Druckniveaus zur Beaufschlagung des Stoffs ― im gezeigten AusfĂ¼hrungsbeispiel der FlĂ¼ssigkeit - mit einem Ăœberdruck erfolgt, wodurch ein NachdrĂ¼cken der in der Ableitung 12 befindlichen FlĂ¼ssigkeit bewirkt wird, so daĂŸ nochmals FlĂ¼ssigkeit zu entsprechenden Verbrauchern bewegt wird. Das Ventil 16 wird geschlossen. Nun wird auch das Ventil 6 geschlossen und das Ventil 17 geöffnet, wodurch das in dem Druckraum 11 befindliche gasförmige Fördermedium Ă¼ber die EntlĂ¼ftungsleitung 19 entweicht. Nun öffnet das Ventil 15, so daĂŸ FlĂ¼ssigkeit aus dem Behälter 9 in den Druckraum 11 nachströmen kann. Das Ventil 16 wird in SchlieĂŸlage gehalten. Dieser Vorgang wird nun solange Förderung benötigt wird wiederholt.The valves 5, 6, 16 and 17 are initially closed, the valve 8 is open. The Liquid extends due to the conductive connection between the container 9 and the pressure chamber 11, wherein also in this embodiment, the connection with the container 9 is arranged below the liquid level N1, in both containers up to the liquid level N1. By opening the valve 5 is under an overpressure standing gaseous fluid introduced into the pressure chamber 11, whereby the liquid is displaced to the lower liquid level N2. This is the Valve 15 is closed and the valve 16 is opened so that the liquid continues into the drain 12 penetrates, with an equal amount of liquid from the discharge 12 to corresponding Consumers is moved. Now the valve 5 is closed and the other Valve 6 to control the introduction of the gaseous fluid into the drain 12 is opened - or it is, in reverse order, first the other valve. 6 opened to control the introduction of the gaseous medium in the discharge line 12 and then the valve 5 is closed -, whereby in both cases the gaseous medium is conducted into the discharge line 12 and the second application of the higher pressure level for charging the substance - in the illustrated embodiment, the liquid - With an overpressure, whereby a reprinting of the located in the derivative 12 Liquid is effected so that again liquid to corresponding Consumers is moved. The valve 16 is closed. Now also the valve 6 closed and the valve 17 is opened, whereby the located in the pressure chamber 11 gaseous fluid escapes through the vent line 19. Now the valve opens 15, so that liquid from the container 9 can flow into the pressure chamber 11. The Valve 16 is held in the closed position. This process is now needed as long as promotion will be repeated.

In dem in Fig. 3 gezeigten, bevorzugten AusfĂ¼hrungsbeispiel der Erfindung weist die Anordnung 10" zusätzlich zu der in Fig. 2 gezeigten und beschriebenen Anordnung eine Verbindung 23 zwischen dem Druckraum 11 und einer Saugleitung 7 des Verdichters 2 auf, wobei die Saugleitung 7 des Verdichters 2 in Strömungsrichtung des gasförmigen Fördermediums nach der Abzweigung fĂ¼r die Verbindung 23 mit dem Ventil 17 des weiteren mit einem Ventil 17 gesteuerten Eingangs 20 des Druckraumes 11 ein weiteres Ventil 8 zum Ă–ffnen oder SchlieĂŸen der Saugleitung 7 gegenĂ¼ber der Umgebung aufweist.In the preferred embodiment of the invention shown in Fig. 3, the arrangement 10 "in addition to the arrangement shown in Fig. 2 and described a Connection 23 between the pressure chamber 11 and a suction line 7 of the compressor. 2 on, wherein the suction line 7 of the compressor 2 in the flow direction of the gaseous Delivery medium after the branch for the connection 23 with the valve 17 of the other with a valve 17 controlled input 20 of the pressure chamber 11 another valve 8 to open or close the suction line 7 from the environment.

Auch in der in Fig. 3 gezeigten Anordnung 10" wird erfindungsgemĂ¤ĂŸ der Stoff - im gezeigten AusfĂ¼hrungsbeispiel die FlĂ¼ssigkeit - durch das gasförmige Fördermedium mit einem Druck beaufschlagt, der zwischen zwei Druckniveaus abwechselnd so verändert wird, daĂŸ bei einem niedrigen Druckniveau der Stoff - im gezeigten AusfĂ¼hrungsbeispiel die FlĂ¼ssigkeit - nachflieĂŸt und durch Anlegen des höheren Druckniveaus in die gewĂ¼nschte Förderrichtung gefördert wird, wobei aber in der in Fig. 3 gezeigten Anordnung 10" bei dem niedrigen Druckniveau, ein Unterdruck herrscht, so daĂŸ der Stoff - im gezeigten AusfĂ¼hrungsbeispiel die FlĂ¼ssigkeit - angesaugt wird und wobei in der in Fig. 3 gezeigten Anordnung 10" beim Anlegen des höheren Druckniveaus ein Ăœberdruck herrscht.Also in the arrangement 10 "shown in FIG. 3, the substance according to the invention is shown in FIG Embodiment, the liquid - through the gaseous fluid with a Pressure applied alternately between two pressure levels so is that at a low pressure level of the substance - in the illustrated embodiment the liquid - flows and by applying the higher pressure level into the desired Conveying direction is promoted, but in the arrangement shown in Fig. 3 10 "at the low pressure level, a negative pressure prevails, so that the substance - in the shown Embodiment, the liquid - is sucked and wherein in the in Fig. 3rd shown arrangement 10 "when applying the higher pressure level, an overpressure prevails.

Alternativ zu der oben angefĂ¼hrten Verbindung mit einer Saugleitung 7 des Verdichters 2 ist es natĂ¼rlich auch möglich den benötigten Unterdruck mit einem zusätzlichen Verdichter zu erzeugen und diesen an die Verbindung 23 anzuschlieĂŸen.Alternatively to the above-mentioned connection with a suction line 7 of the compressor. 2 Of course it is also possible the required vacuum with an additional compressor to generate and connect this to the connection 23.

Die Förderung von Stoffen nach der bevorzugten AusfĂ¼hrungsform der erfindungsgemĂ¤ĂŸen Vorrichtung wird in dem in Fig. 3 gezeigten AusfĂ¼hrungsbeispiel wie folgt ausgefĂ¼hrt:The promotion of substances according to the preferred embodiment of the invention Device is carried out in the embodiment shown in Fig. 3 as follows:

Die Ventile 5, 6, 8 und 16 sind anfänglich geschlossen, die Ventile 15 und 17 sind geöffnet. In diesem AusfĂ¼hrungsbeispiel erstreckt sich die FlĂ¼ssigkeit in dem FlĂ¼ssigkeitsbehälter 9 auf das FlĂ¼ssigkeitsniveau N1 und in dem Druckraum 11 aufgrund der weiter unten beschriebenen Saugfunktion des Unterdruckes auf das wesentlich höhere FlĂ¼ssigkeitsniveau N1". Durch SchlieĂŸen des Ventils 17 und gleichzeitiges Ă–ffnen des Ventils 5 wird das unter einem Ăœberdruck stehende gasförmige Fördermedium in den Druckraum 11 eingeleitet, wodurch die FlĂ¼ssigkeit bis zu einem unteren FlĂ¼ssigkeitsniveau N2 verdrängt wird. Dabei wird das Ventil 15 geschlossen und das Ventil 16 geöffnet, so daĂŸ die FlĂ¼ssigkeit weiter in die FlĂ¼ssigkeitsableitung 12 eindringt, wobei eine gleiche Menge FlĂ¼ssigkeit aus der FlĂ¼ssigkeitsableitung 12 zu entsprechenden FlĂ¼ssigkeitsverbraucher bewegt wird. In etwa gleichzeitig mit dem Ventil 5 wird auch das Ventil 8 geöffnet, damit der Verdichter 2 Gas einsaugen kann und ein Druck- und Mengenausgleich des Gases erfolgt.The valves 5, 6, 8 and 16 are initially closed, the valves 15 and 17 are open. In this embodiment, the liquid extends in the liquid container 9 to the liquid level N1 and in the pressure chamber 11 due to the below described suction function of the negative pressure to the much higher liquid level N1 "by closing the valve 17 and simultaneously opening the valve 5 is the under pressure gaseous medium in the pressure chamber 11 introduced, whereby the liquid displaces up to a lower liquid level N2 becomes. In this case, the valve 15 is closed and the valve 16 is opened, so that the Liquid continues to penetrate into the liquid discharge 12, wherein an equal amount Liquid from the liquid discharge 12 to corresponding liquid consumers is moved. In about the same time as the valve 5, the valve 8 is opened so that the compressor 2 can suck in gas and a pressure and flow compensation of the gas he follows.

Wie zu der in Fig. 2 gezeigten AusfĂ¼hrungsform der Erfindung gezeigt und beschrieben, kann, wenn gewĂ¼nscht, auch bei dieser bevorzugten AusfĂ¼hrungsform der Erfindung nun das Ventil 5 geschlossen und das weitere Ventil 6 zur Steuerung der Einleitung des gasförmigen Fördermediums in die Ableitung 12 geöffnet werden - oder es kann, in umgekehrter Reihenfolge, zuerst das weitere Ventil 6 zur Steuerung der Einleitung des gasförmigen Fördermediums in die Ableitung 12 geöffnet und dann das Ventil 5 geschlossen werden -, wodurch in beiden alternativen Programmschritten das gasförmige Fördermedium in die Ableitung 12 geleitet wird und das zweite Anlegen des höheren Druckniveaus zur Beaufschlagung des Stoffs - im gezeigten AusfĂ¼hrungsbeispiel der FlĂ¼ssigkeit - mit einem Ăœberdruck erfolgt, wodurch ein NachdrĂ¼cken der in der Ableitung 12 befindlichen FlĂ¼ssigkeit bewirkt wird, so daĂŸ nochmals FlĂ¼ssigkeit zu entsprechenden Verbrauchern bewegt wird.As shown and described with respect to the embodiment of the invention shown in FIG. 2, may, if desired, also in this preferred embodiment of the invention now the valve 5 is closed and the further valve 6 for controlling the introduction of the gaseous Medium to be opened in the derivative 12 - or it can, in reverse First, the additional valve 6 to control the introduction of the gaseous Opened medium in the discharge line 12 and then the valve 5 is closed -, which in both alternative program steps, the gaseous medium is conducted into the discharge line 12 and the second application of the higher pressure level for acting on the substance - in the illustrated embodiment, the liquid - with an overpressure occurs, whereby a reprinting of the 12 located in the derivative Liquid is effected, so that again liquid to corresponding consumers is moved.

Das Ventil 16 wird geschlossen. Nun werden auch das Ventil 6 und das Ventil 8 geschlossen und das Ventil 17 geöffnet, wodurch das in dem Druckraum 11 befindliche gasförmige Fördermedium Ă¼ber die EntlĂ¼ftungsleitung 19 und die Saugleitung 7 zum Verdichter 2 geleitet wird und ein Unterdruck in der Druckkammer 11 entsteht. Durch den Unterdruck oder, fĂ¼r den Fall, daĂŸ das Ventil 15 kein RĂ¼ckschlagventil ist, durch Fremdsteuerung öffnet sich nun das Ventil 15, so daĂŸ FlĂ¼ssigkeit durch den in der Druckkammer 11 herrschenden Unterdruck aus dem Behälter 9 in den Druckraum 11 eingesaugt wird. Das Ventil 16 wird in SchlieĂŸlage gehalten. Nun wird das Ventil 17 geschlossen und gleichzeitig wird das Ventil 8 wieder geöffnet. Dieser Vorgang wird nun solange Förderung benötigt wird wiederholt. The valve 16 is closed. Now also the valve 6 and the valve 8 are closed and the valve 17 is opened, whereby the located in the pressure chamber 11 gaseous Pumped fluid via the vent line 19 and the suction line 7 to the compressor 2 is passed and a negative pressure in the pressure chamber 11 is formed. By the negative pressure or, in the event that the valve 15 is not a check valve, by external control now opens the valve 15 so that liquid through the in the pressure chamber 11th prevailing negative pressure from the container 9 is sucked into the pressure chamber 11. The Valve 16 is held in the closed position. Now the valve 17 is closed and at the same time the valve 8 is opened again. This process is now needed as long as promotion will be repeated.

Bei geeignet gewählten Querschnitten und Leitungslängen, kann anstelle des Ventils 8 auch eine Rohrverengung, wie z. B. eine Blende, vorgesehen oder aber ein solches Ventil verwendet werden, das anstelle des gänzlichen SchlieĂŸens und des Ă–ffnens lediglich gedrosselt oder weiter geöffnet wird.For suitably selected cross-sections and cable lengths, instead of the valve 8 also a pipe constriction, such. As an aperture provided or such a valve Only throttled in place of the whole closing and opening or continue to open.

In Fig. 4 wird eine GeschirrspĂ¼lmaschine 25, im gezeigten AusfĂ¼hrungsbeispiel eine Haushalt-GeschirrspĂ¼lmaschine gezeigt, in der die erfindungsgemĂ¤ĂŸe Vorrichtung "1 zur Förderung von Stoffen in der in der Fig. 3 gezeigten und beschriebenen, bevorzugten AusfĂ¼hrungsform angeordnet ist. Bei dieser Anwendung der erfindungsgemĂ¤ĂŸen Vorrichtung 1" ist das gasförmige Fördermedium Luft und der zu fördernde Stoff eine ReinigungsflĂ¼ssigkeit, mit der in der GeschirrspĂ¼lmaschine 25 zu reinigendes Gut beaufschlagt wird, nämlich Wasser, das ggf. mit Reinigungs- oder KlarspĂ¼lmitteln vermischt und ggf. auch mit abgetragenen Speiseresten verschmutzt ist.In Fig. 4 is a dishwasher 25, in the embodiment shown a Household dishwasher shown in the inventive device "1 for Promotion of substances in the shown in Fig. 3 and described, preferred Embodiment is arranged. In this application of the device according to the invention 1 "is the gaseous medium conveyed air and the substance to be conveyed a cleaning liquid, subjected to the to be cleaned in the dishwasher 25 Good is water, which may be mixed with cleaning or rinse aid and possibly is also contaminated with worn food leftovers.

Der Behälter 9 der Vorrichtung 1" wird bei der GeschirrspĂ¼lmaschine 25 von dem untersten Abschnitt eines SpĂ¼lbehälters 26 gebildet, der Ă¼blicherweise Pumpentopf oder Ablaufwanne genannt wird und in dem sich die von dem in Geschirrkörben 27, 28 eingefĂ¼llten, nicht gezeigten zu reinigendem Gut, z.B. Besteck, Teller, Tassen, Gläser usw., zurĂ¼cklaufenden ReinigungsflĂ¼ssigkeit sammelt. Das zu reinigende Gut wird mit der ReinigungsflĂ¼ssigkeit durch SprĂ¼heinrichtungen, z.B. sogenannten SprĂ¼harmen 29, 30, beaufschlagt. Die ReinigungsflĂ¼ssigkeit wird in der in Fig. 4 gezeigten und beschriebenen Anordnung mittels der Vorrichtung 1", wie zu Fig. 4 beschrieben, in die mit den Zuleitungen zu den SprĂ¼harmen 29, 30 verbundene Ableitung 12 gefördert.The container 9 of the device 1 "is at the dishwasher 25 of the lowest Section of a washing container 26 is formed, which usually sump or drain pan is called and in which the filled of the in crockery baskets 27, 28, Not to be cleaned, not shown, e.g. Cutlery, plates, cups, glasses, etc., returning Cleaning fluid collects. The good to be cleaned with the cleaning fluid by sprayers, e.g. so-called spray arms 29, 30, applied. The cleaning liquid is in the arrangement shown in FIG. 4 and described by means of the device 1 ", as described for Fig. 4, in the with the leads conveyed to the spray arms 29, 30 connected discharge 12.

Der zeitlichen Verlauf eines mit der zu den Fig. 3 und 4 gezeigten bevorzugten AusfĂ¼hrungsbeispielen der Erfindung geschilderten Vorrichtung 1" erzeugten SprĂ¼himpulses ist in Fig. 5 gezeigt, wobei die Figur den zeitlichen Ablauf und den erzeugten Wasserdruck ab dem Zeitpunkt des Ă–ffnen des Ventils 17 zum Ansaugen der ReinigungsflĂ¼ssigkeit in den Druckraum 11 zeigt. Der Zeitraum zum Ansaugen ist in Fig. 5 mit Ts bezeichnet und beträgt etwa eine Sekunde. In dem in Fig. 3 und 4 beschriebenen bevorzugten AusfĂ¼hrungsbeispiel der Erfindung wird nun Ă¼ber eine Zeitdauer Tp von etwa einer halben Sekunde eine Pause eingelegt. Nun folgt die impulsartige Förderung der ReinigungsflĂ¼ssigkeit durch Ă–ffnen des Ventils 5 mit einer Impulshöhe If von im AusfĂ¼hrungsbeispiel ca. 310 Millibar und das NachdrĂ¼cken durch Ă–ffnen des Ventils 6 mit einer Impulshöhe In von im AusfĂ¼hrungsbeispiel zusätzlich ca. 90 Millibar zusammen Ă¼ber eine Zeitdauer Ti von im AusfĂ¼hrungsbeispiel einer halben Sekunde. In dem beschriebenen AusfĂ¼hrungsbeispiel ist also das Verhältnis der Dauer des zeitlichen Abstandes (Ts + Tp) der Förderungen der ReinigungsflĂ¼ssigkeit zu der Dauer der Förderung der ReinigungsflĂ¼ssigkeit Ti in etwa 3:1. Mit dieser sehr kurzen Impulsdauer Ti wird die Reinigungswirkung der unter Druck auf das zu reinigende Gut aufgebrachten ReinigungsflĂ¼ssigkeit optimiert.The time course of a preferred embodiments shown in FIGS. 3 and 4 The invention described device 1 "spray pulse is generated shown in Figure 5, wherein the figure shows the timing and the generated water pressure from the time of opening the valve 17 for sucking the cleaning liquid in the pressure chamber 11 shows. The period for suction is indicated in Fig. 5 with Ts and is about a second. In the preferred embodiment described in FIGS. 3 and 4 The invention will now be over a period Tp of about half a second taken a break. Now follows the pulse-like promotion of cleaning fluid by opening the valve 5 with a pulse height If of the exemplary embodiment 310 millibar and the repressing by opening the valve 6 with a pulse height In of in the exemplary embodiment additionally about 90 millibars together over a period of time Ti of in the embodiment of half a second. In the described embodiment is thus the ratio of the duration of the time interval (Ts + Tp) of the subsidies the cleaning liquid at the time of promotion of the cleaning liquid Ti in about 3: 1. With this very short pulse duration Ti, the cleaning effect of the Optimized pressure on the cleaning liquid applied to the cleaning agent.

Bei einer Beaufschlagung des zu reinigenden Gutes im zeitlichen Abstand wie in den zu Fig. 1 und 2 beschriebenen AusfĂ¼hrungsbeispielen der Erfindung erfolgt bei jedem Beginn der Beaufschlagung ein Druckanstieg in der beaufschlagenden ReinigungsflĂ¼ssigkeit sowie bei jedem Ende der Beaufschlagung ein Abfall des Druckes in der beaufschlagenden ReinigungsflĂ¼ssigkeit. In der Praxis hat sich gezeigt, daĂŸ durch das abwechselnde Ansteigen und Abfallen des Druckes der ReinigungsflĂ¼ssigkeit und der damit verursachten abwechselnde Ansteigen und Abfallen der auf die Verschmutzungen auf dem zu reinigenden Gut wirkenden mechanischen Kräfte, ein ausreichendes Reinigungsergebnis bei einer kurzen Dauer der Beaufschlagung erreicht wird, insbesondere wenn die Förderung der ReinigungsflĂ¼ssigkeit impulsartig, wie bei den zu den Figuren 3 und 4 beschriebenen AusfĂ¼hrungsformen der Erfindung, erfolgt, wobei das abwechselnde Ansteigen und Abfallen des Druckes der ReinigungsflĂ¼ssigkeit 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.When loading the goods to be cleaned at a time interval as in the zu Figs. 1 and 2 described embodiments of the invention takes place at each beginning the application of a pressure increase in the impinging cleaning liquid and at each end of the application, a drop in the pressure in the impinging Cleaning fluid. In practice it has been shown that by the alternate Rising and falling of the pressure of the cleaning fluid and the thus caused alternating increase and decrease of the soiling on the to be cleaned Good mechanical forces, sufficient cleaning results with a short duration of admission, especially if the promotion the cleaning liquid like a pulse, as described in the figures 3 and 4 Embodiments of the invention, wherein the alternating increase and decreasing the pressure of the cleaning liquid and the alternating therewith caused Rising and falling on the dirt on the material to be cleaned acting mechanical forces in a very short period of time and thus takes place very intense.

Mit der Erfindung ist eine Vorrichtung zur Förderung von flieĂŸfähigen Stoffen geschaffen, die keine besonderen Zulaufvoraussetzungen benötigt und die einen einfachen konstruktiven Aufbau aufweist.The invention provides a device for conveying flowable substances, which requires no special Zulaufausaussetzungen and a simple constructive Structure has.

Claims (16)

  1. Device for conveying flowable substances, comprising an arrangement (10, 10', 10") with a pressure chamber (11) in which the substances are acted on by a gaseous conveying medium, which is disposed under pressure by at least one compressor (2), at a pressure which so changes between two pressure levels in alternation that at a low pressure level the substances can enter into the pressure chamber (11) and by application of the higher pressure level are conveyed in the desired conveying direction out of the pressure chamber, wherein the arrangement (10, 10', 10") comprises at least one pressure chamber (11), which is conductively connected with a container (9) by means of a duct (13) and into which the gaseous conveying medium is introduced controlled by a valve (5), wherein the pressure in the pressure chamber (11) so changes between two pressure levels in alternation that at the low pressure level in the pressure container (11) the substances enter from the container (9) into the pressure chamber (11), wherein a valve (15) for opening or closing the connection between the container (9) and the pressure chamber (11) is arranged between the container (9) and the pressure chamber (11) and that through application of the higher pressure level to the pressure chamber (11) the substances are conveyed into a delivery duct (12) conductively connected with the pressure chamber (11), wherein a valve (16) for opening or closing the connection between the pressure chamber (11) and the delivery duct (12) is arranged between the pressure chamber (11) and the delivery duct (12) and that the pressure chamber (11) has a further inlet (18), which is controlled by a valve (17), for ventilating the gaseous conveying medium.
  2. Device according to claim 1, characterised in that the duct (13) extends from the container (9) to the delivery duct (12) and has a branch (14) to the pressure chamber (11), wherein the entry (20) of the gaseous conveying medium into the pressure chamber (11) in the use position of the device (1, 1', 1") is arranged at the top and the entry of the substances from the duct (13) in the use position of the device (1, 1', 1") is arranged at the bottom.
  3. Device according to claim 1 or 2, characterised in that the valve (15) for opening or closing the connection between the container (9) and the pressure chamber (11) is a non-return valve which closes an outlet opening of the container (9) in the case of occurrence of a flow directed in the arrangement (10, 10', 10") towards the container (9).
  4. Device according to claim 1 or 2, characterised in that the valve (16) for opening or closing the connection between the pressure chamber (11) and the delivery duct (12) is a non-return valve which closes the delivery duct (12) in the case of occurrence of a flow directed in the arrangement (10, 10', 10") towards the container (9) or towards the pressure chamber (11).
  5. Device according to claim 3 or 4, characterised in that the non-return valve comprises a spherical or conical closure body.
  6. Device according to one of claims 1 to 5, characterised in that the compressor (2) introduces the gaseous conveying medium into a pressure container (4) connected, after the compressor (2) in the flow direction of the gaseous conveying medium, to the compressor.
  7. Device according to one of claims 1 to 6, characterised in that the valve (5) for controlling the introduction of the gaseous conveying medium into the pressure chamber (11) is arranged between the pressure container (4) and the pressure chamber (11).
  8. Device according to one of claims 1 to 7, characterised in that the arrangement (10', 10") comprises a connection (22) between the delivery duct (12) and the compressor (2) for the gaseous conveying medium, in which a further valve (6) for controlling the introduction of the gaseous conveying medium into the delivery duct (12) is arranged.
  9. Device according to one of claims 1 to 8, characterised in that the substances in the arrangement (10") are acted on by the gaseous conveying medium at a pressure which so changes between two pressure levels in alternation that at a low pressure level in which an underpressure prevails the substances are sucked in and through application of the higher pressure level at which an excess pressure prevails the substances are conveyed in the desired conveying direction.
  10. Device according to one of claims 1 to 9, characterised in that the pressure in the pressure chamber (11) so varies between two pressure levels in alternation that at the low pressure level in the pressure container (11), at which an underpressure prevails, the substances are sucked out of the container (9), which is conductively connected with this pressure chamber (11), into the pressure chamber (11) and through application of the higher pressure level at which an excess pressure prevails the substances are conveyed into the discharge duct (12) connected with the pressure chamber (11).
  11. Device according to claim 10, characterised in that the arrangement (10") comprises a connection (23) between the pressure chamber (11) and a suction duct (7) of the compressor (2), wherein the suction duct (7) of the compressor (2) comprises, in flow direction of the gaseous conveying medium after the branching for the connection with the valve (17) of the further inlet (18) - which is controlled by a valve (17) - of the pressure chamber (11), a further valve (8) for opening or closing the suction duct (7) relative to the environment.
  12. Device according to one of claims 1 to 11, characterised in that the gaseous conveying medium is air.
  13. Device according to one of claims 1 to 12, characterised in that the substances to be conveyed consist of gases, liquids or solids and/or mixtures of the same.
  14. Device according to one of claims 1 to 13, characterised in that the substances are optionally laden with liquids, which are optionally hot and/or foaming.
  15. Device according to one of claims 1 to 14, characterised in that it is arranged in a dishwashing machine (25).
  16. Dishwashing machine, characterised in that a device (1, 1', 1") for conveying substances according to at least one of the preceding claims is arranged in the dishwashing machine (25).
EP01923712A 2000-04-06 2001-04-03 Device for conveying flowing substances Expired - Lifetime EP1272092B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10017242 2000-04-06
DE10017242A DE10017242A1 (en) 2000-04-06 2000-04-06 Device for conveying flowable substances
PCT/EP2001/003791 WO2001076449A1 (en) 2000-04-06 2001-04-03 Device for conveying flowing substances

Publications (2)

Publication Number Publication Date
EP1272092A1 EP1272092A1 (en) 2003-01-08
EP1272092B1 true EP1272092B1 (en) 2005-05-25

Family

ID=7637865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01923712A Expired - Lifetime EP1272092B1 (en) 2000-04-06 2001-04-03 Device for conveying flowing substances

Country Status (6)

Country Link
EP (1) EP1272092B1 (en)
AT (1) ATE296049T1 (en)
AU (1) AU2001250414A1 (en)
DE (2) DE10017242A1 (en)
ES (1) ES2241813T3 (en)
WO (1) WO2001076449A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11752256B2 (en) 2017-09-27 2023-09-12 Medirio S.A. Medical infusion device

Family Cites Families (8)

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Publication number Priority date Publication date Assignee Title
DE897360C (en) * 1950-02-20 1953-11-19 Procedes Thermodynamiques Soc Pneumatic fluid lifters
NL254765A (en) * 1959-08-26
JPS5493575A (en) * 1977-12-28 1979-07-24 Kyoei Zoki Kk Shifter
US4187122A (en) * 1978-11-07 1980-02-05 Query Grady W Dishwashing apparatus
DE3018872A1 (en) * 1980-05-16 1981-11-26 BHT Hygiene-Technik GmbH, 8000 MĂ¼nchen Cleaning system for glass chemical vessels - interrupts cleaning-liquid spray long enough for films to break on vessels
GB2239904A (en) * 1990-01-16 1991-07-17 Atomic Energy Authority Uk Fluidic diode pumps
DE4006558A1 (en) * 1990-03-02 1991-09-05 Josef Woerz Pump system for food fluids - has two intermediate vessels, each connected by separate vacuum and overpressure lines to control valve and form there to pump
DE9016481U1 (en) * 1990-12-04 1992-04-02 Siemens AG, 8000 MĂ¼nchen Pulsating gas jet pump for liquids

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11752256B2 (en) 2017-09-27 2023-09-12 Medirio S.A. Medical infusion device

Also Published As

Publication number Publication date
DE50106319D1 (en) 2005-06-30
DE10017242A1 (en) 2001-11-15
ES2241813T3 (en) 2005-11-01
AU2001250414A1 (en) 2001-10-23
ATE296049T1 (en) 2005-06-15
EP1272092A1 (en) 2003-01-08
WO2001076449A1 (en) 2001-10-18

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