EP1663533B1 - Injecteur et systeme de production de mousse comprenant ledit injecteur - Google Patents

Injecteur et systeme de production de mousse comprenant ledit injecteur Download PDF

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Publication number
EP1663533B1
EP1663533B1 EP04764450A EP04764450A EP1663533B1 EP 1663533 B1 EP1663533 B1 EP 1663533B1 EP 04764450 A EP04764450 A EP 04764450A EP 04764450 A EP04764450 A EP 04764450A EP 1663533 B1 EP1663533 B1 EP 1663533B1
Authority
EP
European Patent Office
Prior art keywords
cleaning liquid
pressure
line
chemical
injector
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.)
Not-in-force
Application number
EP04764450A
Other languages
German (de)
English (en)
Other versions
EP1663533A1 (fr
Inventor
Wolfgang Holzwarth
Stefan Schilpp
Jürgen WEITZDÖRFER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alfred Kaercher SE and Co KG
Original Assignee
Alfred Kaercher SE and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfred Kaercher SE and Co KG filed Critical Alfred Kaercher SE and Co KG
Priority to PL04764450T priority Critical patent/PL1663533T3/pl
Publication of EP1663533A1 publication Critical patent/EP1663533A1/fr
Application granted granted Critical
Publication of EP1663533B1 publication Critical patent/EP1663533B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/312—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof
    • B01F25/3124—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow
    • B01F25/31242—Injector mixers in conduits or tubes through which the main component flows with Venturi elements; Details thereof characterised by the place of introduction of the main flow the main flow being injected in the central area of the venturi, creating an aspiration in the circumferential part of the conduit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/003—Cleaning involving contact with foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/026—Cleaning by making use of hand-held spray guns; Fluid preparations therefor

Definitions

  • the invention relates to an injector for adding a chemical to a cleaning fluid having the features of patent claim 1 and to a foam generation system having such an injector, according to claim 12.
  • the pumped cleaning liquid usually water
  • a chemical by means of an injector to improve the cleaning effect.
  • air is injected by means of an air compressor in the output side line of the high-pressure pump. Upstream of the air supply, the cleaning fluid pressurized by the high-pressure pump can be mixed with the chemical by means of an injector.
  • the pressing in of the air by means of the compressed air compressor causes a restriction of the output pressure of the high pressure pump, since the output pressure of the compressor must be greater than the output pressure of the pump.
  • compressed air compressors as in the system according to the DE 36 30 555 A1 are used, an output pressure of up to 12 bar.
  • an injector having the features of the preamble of claim 1 is known.
  • the injector has an inlet that can be connected to the pressure port of a high pressure pump, and an outlet that is connectable to a pressure line.
  • the inlet is connected to the outlet via a detergent line, and two chemical lines for adding chemicals to the cleaning liquid flow into the detergent line in one area of the mouth. Upstream of the mouth region, the detergent line forms a cylindrical drive channel and downstream of the mouth region, the detergent line forms a cylindrical collecting channel.
  • the pressure of the cleaning fluid can be at least 25 bar.
  • Object of the present invention is to provide an injector of the type mentioned, in which a particularly effective admixture of the chemical can be achieved.
  • the diameter of the catch channel is 1.2 times to 1.4 times the diameter of the drive channel. It has been found that with such a ratio of the diameter of the blowing and catching channel a particularly effective admixture of chemical can be achieved, as long as the pressure of the cleaning liquid does not exceed a predetermined maximum value, while exceeding this value in the injector virtually no admixture of Chemical is done more.
  • the injector can be connected to the high-pressure connection of a high-pressure pump, which puts the cleaning fluid under a pressure of at least 30 bar. In such a pressure of the cleaning liquid can then be mixed by means of the injector, a chemical which can be sucked for example from a storage tank. An additional feed pump for the chemical is not required and by mixing the chemical at a pressure of the cleaning fluid of at least 30 bar ensures that the cleaning liquid-chemicals mixture can be supplied under high pressure of the connectable to the injector pressure line.
  • the chemical can be sucked in and the cleaning liquid can be mixed at a pressure of the cleaning liquid of 60 bar to 80 bar, in particular at a pressure of 70 bar to a maximum of 80 bar.
  • a pressure of the cleaning liquid-chemical mixture of 70 bar to 80 bar has proven to be particularly favorable to produce a particularly effective detergent foam with low chemical content.
  • the cleaning liquid in a first step the cleaning liquid is added to the chemical, wherein the cleaning liquid is supplied under an operating pressure of more than about 30 bar to the injector, and in a second step, the cleaning liquid-chemical mixture by means of the foam nozzle Air added. It is advantageous here if the operating pressure of the cleaning fluid is about 60 bar to about 80 bar, in particular about 70 bar to a maximum of about 80 bar.
  • the admixture of a chemical and air in two successive steps, wherein the operating pressure of the cleaning liquid is more than about 30 bar, has the advantage that the injector can be arranged at the outlet of a high-pressure pump, while the foam nozzle used for the admixture of air can be kept spatially separated from the injector and in fluid communication with the injector via a single high pressure line, preferably via a high pressure hose.
  • the injector is designed such that the cleaning liquid at a pressure of more than 80 bar virtually no chemical is added.
  • the diameter of the capture channel is approximately 1.25 times the diameter of the drive channel.
  • catch channel has 6 times the length of the drive channel.
  • the drive channel widens conically in the direction of the mouth region with a cone angle of 90 degrees.
  • the cleaning fluid line upstream of the drive channel forms a continuously tapering in the flow direction supply channel, which comprises an arcuately narrowing in longitudinal section inlet portion.
  • the arcuate narrowing entry section reduces the risk of turbulence forming upstream of the orifice area which could interfere with the chemical admixture.
  • the inlet section merges continuously into a line section which tapers conically in the flow direction, to which the drive channel adjoins, the cone angle of the line section being 30 °.
  • a further optimization of the flow conditions within the injector according to the invention can be achieved in that the cleaning liquid line upstream of the feed channel a cylindrical Connecting channel forms.
  • the connection channel makes it easier to connect the injector to a pressure connection of a high-pressure pump, wherein disruptions of the flow conditions within the injector can be kept very low.
  • the input of the injector is connected via a bypass line to the output of the injector, wherein in the bypass line a bypass valve is connected and by means of the bypass Valve the bypass line is releasable, if the pressure of the cleaning fluid exceeds a predetermined maximum value.
  • bypass line can be released at a pressure of the cleaning liquid of 80 bar.
  • the invention also relates to a foam generation system comprising a cleaning fluid-conveying high-pressure pump, an injector of the aforementioned type for adding a chemical to the cleaning liquid and a foam nozzle for adding air to the cleaning liquid-chemical mixture.
  • the foam generation system is characterized in that the injector is arranged on the high-pressure pump and in fluid communication with the foam nozzle via a pressure line, wherein the cleaning liquid-chemical mixture of the foam nozzle can be supplied via the pressure line under a pressure of at least 30 bar.
  • the foam generation system is particularly easy to handle, because the arrangement of the injector on the high-pressure pump and the connection of the injector via a Pressure line with the foam nozzle allows a compact design of the foam generation system, the use of which is very simple.
  • the cleaning liquid-chemical mixture of the foam nozzle can be supplied under a pressure of 60 bar to 80 bar.
  • a pressure of about 70 bar to about 80 bar has proven to be particularly advantageous.
  • the foam nozzle is held on a nozzle button, for example a cleaning gun, which comprises a high-pressure nozzle, optionally with the cleaning liquid-chemical mixture or the high-pressure nozzle can be acted upon with cleaning liquid the foam nozzle.
  • a nozzle button for example a cleaning gun, which comprises a high-pressure nozzle, optionally with the cleaning liquid-chemical mixture or the high-pressure nozzle can be acted upon with cleaning liquid the foam nozzle.
  • the high-pressure nozzle can be subjected to a standing cleaning liquid under a pressure of at least 100 bar, preferably about 120 to about 250 bar, while the foam nozzle is pressurized to at least 30 bar, preferably about 60 to about 80 bar, standing cleaning fluid-chemicals mixture is acted upon.
  • a standing cleaning liquid under a pressure of at least 100 bar, preferably about 120 to about 250 bar
  • the foam nozzle is pressurized to at least 30 bar, preferably about 60 to about 80 bar, standing cleaning fluid-chemicals mixture is acted upon.
  • a generally designated by the reference numeral 10 foam generating system is shown with a high-pressure cleaner 12 which includes a driven by an electric motor 14 high-pressure pump 16, and with a nozzle button in the form of a cleaning gun 18, which via a high-pressure line in the form of a high-pressure hose 20 to the Output 21 of an injector 22 is connected, the input 23 is connected to the pressure port 25 of the high-pressure pump 16.
  • the foam generation system 10 also includes a chemical container 28 which communicates with the injector 22 via a chemical line 30.
  • the chemical container 28 may be configured as a separate structural unit, as shown in FIG FIG. 1 is shown. Alternatively, it can be provided that the chemical container 28 is integrated into the high-pressure cleaning device 12. This is in FIG. 1 illustrated by the arrow 30.
  • the cleaning gun 18 has a pistol-like handle and a first and a second output line 31, 32, which can be selectively acted upon with liquid. At the free end of the first output line 31, a foam nozzle 34 is held, while the free end of the second output line 32 carries a high pressure nozzle 36.
  • the cleaning gun 18 is configured in a manner known per se such that either cleaning agent foam can be applied to the surface to be cleaned either via the foam nozzle 34 detergent foam or via the high-pressure nozzle 36 without additional chemical. With the help of the foam nozzle air can be added to the supplied cleaning liquid-chemical mixture.
  • foam nozzles are known to the person skilled in the art as well as the high-pressure nozzle 36 and cleaning gun 18.
  • Cleaning fluid preferably water
  • the high-pressure pump 16 can convey the cleaning fluid by means of the high-pressure pump 16, wherein the cleaning fluid can be supplied to the injector 22 under high pressure and then to the cleaning gun 18 via the high-pressure hose 20.
  • a chemical can be added to the conveyed cleaning liquid so that pressurized cleaning liquid-chemical mixture can be supplied to the foam nozzle 34 via the high-pressure hose 20.
  • the injector 22 used for admixing the chemical is in FIG. 2 shown in detail. It comprises a cleaning line 40 which penetrates the injector 22 in the longitudinal direction and connects the inlet 23 of the injector to the outlet 21 and into which the chemical line 30 terminates vertically in an opening region 42. Upstream of the mouth region 43, the cleaning agent line 40 forms a cylindrical drive channel 44, which opens into the mouth region 43 via a cone-shaped end section 45 and upstream of which a feed channel 49, which continuously tapers in the flow direction 47, is arranged upstream.
  • the supply channel 49 has an arcuately narrowing in longitudinal section inlet portion 50, to which in the flow direction 47 is a cone-shaped Line section 51 adjoins kink-free.
  • the line section 51 has a cone angle of approximately 30 °.
  • Upstream of the feed channel 49 is a cylindrical connecting channel 53, via which the inlet 23 of the injector communicates with the feed channel 49 in flow connection.
  • the cleaning agent line 40 Downstream of the mouth region 43, the cleaning agent line 40 forms a cylindrical collecting channel 55, which has approximately six times the length of the driving channel 44 in the flow direction 47 and whose diameter is approximately 1.25 times the diameter of the driving channel 44.
  • An outlet channel 57 adjoins the catching channel 45 in the flow direction 47, with a first outlet section 58 which widens conically in the flow direction 47 with a cone angle of approximately 10 °, and with a second outlet section 59 which opens with a cone angle of approximately 60 ° flared until the outlet 21 of the injector 22.
  • Parallel to the detergent line 40 is a the input 23 to the output 21 of the injector 22 connecting bypass line 61, in which a spring-loaded bypass valve 62 is connected.
  • the bypass valve 62 is designed such that it opens at a prevailing in the region of the inlet 23 pressure of the cleaning liquid of more than 80 bar, so that at cleaning fluid pressures of more than 80 bar, the injector 22 can be bypassed, while at a pressure of less than 80 bar, the bypass line 62 is closed and thereby the entire, funded by the high-pressure pump 16 cleaning fluid flows through the injector 22.
  • the passage of the cleaning liquid through the injector 22 has the consequence that chemical is sucked from the chemical container 28 and mixed with the cleaning liquid via the chemical line 30.
  • the cleaning liquid-chemical mixture of the foam nozzle 34 can be supplied, so that the mixture supplied additional air can be added.
  • the flow diameter of the foam nozzle is in this case selected such that at active high pressure pump 16 at the pressure port 25, a cleaning liquid pressure of about 70 to a maximum of 80 bar sets so that chemical sucked from the chemical tank 28 and the cleaning liquid-chemical mixture thus generated via the high-pressure hose 20th and the first output line 31 is supplied to the foam nozzle 33.
  • the foam nozzle 34 can be admixed in a conventional manner air, and the pressurized cleaning liquid-chemical mixture can then be applied at high exit velocity in the form of a detergent foam on the surface to be cleaned.
  • the user may activate the high pressure nozzle 36, whose flow diameter is less than the flow diameter of the foam nozzle.
  • a cleaning fluid pressure of at least 120 bar to a maximum of 250 bar is established in the region of the pressure port 25.
  • This causes the bypass valve 62 to assume its open state, and thus cleaning fluid conveyed by the high-pressure pump 16 can bypass the injector 22.
  • Cleaning fluid the nevertheless flows through the injector 22 under high pressure, due to the adjusting under these conditions flow conditions causes only a very small suction effect for the chemical, so that virtually no chemical of the cleaning liquid is added.
  • the under very high pressure cleaning liquid can be supplied via the high pressure hose 20 and the second output line 32 of the high pressure nozzle 36 and applied by this on the surface to be cleaned.
  • the high-pressure nozzle 36 is detachably connectable to the second outlet line 32 via known connection means, which are therefore not shown in the drawing. This gives the user the opportunity to use different high-pressure nozzles, which differ in particular in their nozzle diameter. The larger the diameter of the high-pressure nozzle is selected, the lower is the pressure of the cleaning liquid which is established in the region of the pressure port 25. Thus, by selecting a corresponding high-pressure nozzle 36, the operating pressure of the cleaning fluid can be varied.

Claims (14)

  1. Injecteur comportant une admission (23) qui peut être raccordée au raccord sous pression d'une pompe à haute pression et une sortie (21) qui peut être raccordée à une conduite sous pression, l'admission (23) étant reliée à la sortie (21) par une conduite d'agent de nettoyage (40) et une conduite de produit chimique (30) débouchant dans la conduite d'agent de nettoyage (40) dans une région d'embouchure (42), le produit chimique pouvant être aspiré à une pression de liquide de nettoyage d'au moins 30 bars et être mélangé au liquide de nettoyage, la conduite de liquide de nettoyage (40) formant, en amont de la région d'embouchure (42), un canal d'injection (44) de forme cylindrique et, en aval de la région d'embouchure (42) un canal collecteur (55) de forme cylindrique, caractérisé en ce que le diamètre du canal collecteur (55) est 1,2 à 1,4 fois le diamètre du canal d'injection (44).
  2. Injecteur selon la revendication 1, caractérisé en ce que le produit chimique peut être aspiré et mélangé au liquide de nettoyage à une pression de liquide de nettoyage de 60 bars à 80 bars, notamment de 70 à 80 bars maximum.
  3. Injecteur selon la revendication 1 ou 2, caractérisé en ce que pratiquement aucun produit chimique n'est mélangé au liquide de nettoyage lorsque la pression du liquide de nettoyage devient supérieure à une valeur maximale.
  4. Injecteur selon la revendication 3, caractérisé en ce que pratiquement aucun produit chimique n'est plus mélangé au liquide de nettoyage à une pression de liquide de nettoyage de plus de 80 bars.
  5. Injecteur selon l'une des revendications précédentes, caractérisé en ce que le canal collecteur (55) a six fois la longueur du canal d'injection (44).
  6. Injecteur selon l'une des revendications précédentes, caractérisé en ce que le canal d'injection (44) s'élargit en cône en direction de la région d'embouchure (42), l'angle de cône étant de 90°.
  7. Injecteur selon l'une des revendications précédentes, caractérisé en ce que la conduite de liquide de nettoyage (40) forme, en amont du canal d'injection (44), un canal d'amenée (49) qui s'amincit continûment dans la direction d'écoulement (47) et qui comporte une portion d'entrée (50) qui se rétrécit en forme d'arc en coupe longitudinale.
  8. Injecteur selon la revendication 7, caractérisé en ce que la portion d'entrée (50) se transforme continûment en portion de conduite (51) qui s'amincit en cône dans la direction d'écoulement (47) et à laquelle se raccorde le canal d'injection (44), l'angle de cône de la portion de conduite (51) étant de 30°.
  9. Injecteur selon la revendication 7 ou 8, caractérisé en ce que la conduite de liquide de nettoyage (40) forme, en amont du canal d'amenée (49), un canal de raccordement (53) de forme cylindrique.
  10. Injecteur selon l'une des revendications précédentes, caractérisé en ce que l'admission (23) est reliée à la sortie (21) par une conduite de dérivation (61), un clapet de dérivation (62) étant monté dans la conduite de dérivation (61) et la conduite de dérivation (61) pouvant être libérée au moyen du clapet de dérivation (62) lorsque la pression du liquide de nettoyage devient supérieure à une valeur maximale prescrite.
  11. Injecteur selon la revendication 10, caractérisé en ce que la valeur maximale est de 80 bars.
  12. Système de génération de mousse comportant une pompe à haute pression (16) délivrant du liquide de nettoyage, un injecteur (22) selon l'une des revendications précédentes pour mélanger un produit chimique au liquide de nettoyage et un ajutage de mousse (34) pour mélanger de l'air au mélange produit chimique/liquide de nettoyage, caractérisé en ce que l'injecteur (22) est disposé au niveau de la pompe à haute pression (16) et est en liaison d'écoulement avec l'ajutage de mousse (34) par une conduite sous pression (20), le mélange produit chimique/liquide de nettoyage pouvant être amené à l'ajutage de mousse (34) à une pression d'au moins 30 bars par la conduite sous pression (20).
  13. Système de génération de mousse selon la revendication 12, caractérisé en ce que le mélange produit chimique/liquide de nettoyage peut être amené à l'ajutage de mousse (34) à une pression allant de 60 bars à 80 bars.
  14. Système de génération de mousse selon la revendication 12 ou 13, caractérisé en ce que l'ajutage de mousse (34) est monté sur une tête d'ajutage (18) qui comporte un ajutage à haute pression (36) ; au choix, l'ajutage de mousse (34) peut être alimenté en mélange produit chimique/liquide de nettoyage ou bien l'ajutage à haute pression (36) peut être alimenté en liquide de nettoyage.
EP04764450A 2003-09-08 2004-08-25 Injecteur et systeme de production de mousse comprenant ledit injecteur Not-in-force EP1663533B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04764450T PL1663533T3 (pl) 2003-09-08 2004-08-25 Iniektor i system wytwarzania piany z tym iniektorem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10342000A DE10342000A1 (de) 2003-09-08 2003-09-08 Verfahren zum Erzeugen eines Reinigungsmittelschaumes sowie Schaumerzeugungssystem zur Durchführung des Verfahrens
PCT/EP2004/009473 WO2005028132A1 (fr) 2003-09-08 2004-08-25 Procede pour produire une mousse de produit de lavage, injecteur et systeme de production de mousse pour la mise en oeuvre dudit procede

Publications (2)

Publication Number Publication Date
EP1663533A1 EP1663533A1 (fr) 2006-06-07
EP1663533B1 true EP1663533B1 (fr) 2011-06-15

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP04764450A Not-in-force EP1663533B1 (fr) 2003-09-08 2004-08-25 Injecteur et systeme de production de mousse comprenant ledit injecteur

Country Status (7)

Country Link
US (1) US20060234616A1 (fr)
EP (1) EP1663533B1 (fr)
AT (1) ATE512729T1 (fr)
DE (1) DE10342000A1 (fr)
DK (1) DK1663533T3 (fr)
PL (1) PL1663533T3 (fr)
WO (1) WO2005028132A1 (fr)

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WO2015113593A1 (fr) 2014-01-28 2015-08-06 Alfred Kärcher Gmbh & Co. Kg Dispositif pour mélanger un agent de nettoyage liquide à un liquide de nettoyage
EP3297764B1 (fr) 2015-05-21 2020-04-01 Alfred Kärcher SE & Co. KG Système de nettoyage à haute pression et unité d'éjection pour un tel système de nettoyage à haute pression

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015113593A1 (fr) 2014-01-28 2015-08-06 Alfred Kärcher Gmbh & Co. Kg Dispositif pour mélanger un agent de nettoyage liquide à un liquide de nettoyage
EP3297764B1 (fr) 2015-05-21 2020-04-01 Alfred Kärcher SE & Co. KG Système de nettoyage à haute pression et unité d'éjection pour un tel système de nettoyage à haute pression

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WO2005028132A1 (fr) 2005-03-31
DK1663533T3 (da) 2011-09-19
US20060234616A1 (en) 2006-10-19
PL1663533T3 (pl) 2011-11-30
ATE512729T1 (de) 2011-07-15
DE10342000A1 (de) 2005-04-07
EP1663533A1 (fr) 2006-06-07

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