EP0120331B1 - Procédé pour commander un appareil de nettoyage au jet à haute pression et appareil de nettoyage au jet à haute pression pour effectuer ce procédé - Google Patents

Procédé pour commander un appareil de nettoyage au jet à haute pression et appareil de nettoyage au jet à haute pression pour effectuer ce procédé Download PDF

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Publication number
EP0120331B1
EP0120331B1 EP84102113A EP84102113A EP0120331B1 EP 0120331 B1 EP0120331 B1 EP 0120331B1 EP 84102113 A EP84102113 A EP 84102113A EP 84102113 A EP84102113 A EP 84102113A EP 0120331 B1 EP0120331 B1 EP 0120331B1
Authority
EP
European Patent Office
Prior art keywords
pressure
flow path
line
cleaning apparatus
valve
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
Application number
EP84102113A
Other languages
German (de)
English (en)
Other versions
EP0120331A1 (fr
Inventor
Werner Ing. Grad. Schulze
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 AT84102113T priority Critical patent/ATE16899T1/de
Publication of EP0120331A1 publication Critical patent/EP0120331A1/fr
Application granted granted Critical
Publication of EP0120331B1 publication Critical patent/EP0120331B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/002—Manually-actuated controlling means, e.g. push buttons, levers or triggers
    • 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
    • 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
    • B08B3/028—Spray guns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2203/00—Details of cleaning machines or methods involving the use or presence of liquid or steam
    • B08B2203/02—Details of machines or methods for cleaning by the force of jets or sprays
    • B08B2203/0282—Safety devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/0318—Processes
    • Y10T137/0324—With control of flow by a condition or characteristic of a fluid
    • Y10T137/0379—By fluid pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8326—Fluid pressure responsive indicator, recorder or alarm

Definitions

  • the invention relates to a method for controlling a high-pressure cleaning device which, via a high-pressure line provided with a closing valve, delivers cleaning medium conveyed by a high-pressure pump via a spray nozzle, in which the high-pressure pump is switched on and off in dependence on the pressure in the high-pressure line, the pump switches on when the pressure in the high-pressure line has fallen below the switch-on pressure which is below the operating pressure resulting when the high-pressure pump is running and the closing valve is fully or partially open.
  • the invention further relates to a high-pressure cleaning device for carrying out this method with a high-pressure pump, a high-pressure line leading from this to a jet pipe with a closing valve and with. a pressure sensor arranged upstream of the closing valve, which generates a signal that switches on the high-pressure pump when the switch-on pressure falls below.
  • High-pressure cleaning devices of this type generally also comprise a heat exchanger with a burner and a chemical metering device, so that the cleaning medium given off can optionally be heated and / or provided with chemical.
  • the optional connection of the heating and / or the chemicals; lien dosing from the hand spray gun which also includes a closing or dosing valve for the cleaning medium to be dispensed.
  • the heat exchanger and the chemical admixing device are normally arranged in the high-pressure cleaning unit itself, which is connected to the hand-held spray gun by means of a frequently quite long high-pressure hose, special signal transmission devices must be provided for the transmission of control signals for the burner and / or the chemical admixing.
  • a high-frequency transmitter in the hand-held spray gun and a corresponding receiver in the high-pressure cleaning unit, so that signals reach the transmitter wirelessly or via a reinforcement surrounding the high-pressure hose.
  • control lines in the jacket of the high-pressure line, which are used for the transmission of electrical control signals.
  • This object is achieved according to the invention in a method of the type described in the introduction in that a second, closable flow path is connected in parallel with the flow path through the spray nozzle in order to generate a control signal, in that the pressure rise time in the cleaning medium is determined after the high-pressure pump is switched on and in one by the When the second flow path is opened, an increase in this rise time compared to the rise time when the second flow path is closed generates a control signal.
  • this pressure rise time is extended.
  • This increase in the pressure rise time can be determined and used to generate a control signal, which is generated, for example, only when a certain increase in the pressure rise time occurs.
  • This control signal can then be used, for example, to switch on the chemical metering or the burner.
  • the operator can determine the occurrence of the control signal in a simple manner by either opening or closing the second flow path before the high-pressure pump is switched on.
  • an optionally closable second flow path is provided, that a pressure-sensitive signal generator connected to a time circuit is connected to the high-pressure line and that the time circuit generates a control signal if the rise time between two specific pressure values when the pump is switched on exceeds a specific value.
  • the pressure-sensitive signal generator comprises two pressure sensors, each of which supplies a signal at different pressures of the timer.
  • the time circuit can check the time interval between these two signals in a manner known per se and compare them with a predetermined time difference, so that a control signal is generated when the predetermined time difference value is exceeded.
  • the pressure-sensitive signal generator may comprise a switching element which can be displaced by the cleaning medium against the action of an elastic force accumulator and which actuates switches connected to the time switch at different positions. It is advantageous if the switching element is assigned a single switch which is actuated by the switching element when a pressure value is reached and is released again when a second pressure value is reached.
  • the time switch is supplied with a switch closing signal and, after a certain time, a switch opening signal, the time interval between which can be determined in the same way as the signals from two pressure sensors or two switches operated in succession.
  • a manually operable closing valve is preferably provided for the second flow path, which can be easily adjusted by the operator and on which the operator can recognize the state of the closing valve in the second flow path.
  • valve body which can be displaced in the flow direction against the action of an elastic energy store against a sealing seat and which can be displaced sealingly against the sealing seat when the operating pressure is reached by the cleaning medium, so that the second flow path is closed. This automatically ensures that the second flow path is closed when the operating pressure is reached and that the cleaning medium is completely dispensed via the first flow path.
  • valve body is pressed by the elastic force accumulator against an upstream valve seat in the idle state and thereby closes the second flow path, and if the valve body forms a throttle body in the second flow path after lifting off this valve seat.
  • the second flow path even when the closing valve is open, only opens when a certain minimum pressure is reached and at the same time closes the second flow path again as soon as a maximum pressure is exceeded.
  • further parallel flow paths can be connected to the first and second flow paths and that the time switch generates different control signals in the case of different extensions of the pressure rise time compared to the pressure rise time which results when only the first flow path is open.
  • a pistol-shaped handpiece 1 is connected to a flexible high-pressure line 2, which opens into a cavity 3 in the handpiece 1.
  • the cavity 3 is connected via an opening 4, a branch space 5 and a throttle point 6 to a spray line 7, which opens into the environment via a spray nozzle 8.
  • a closing body 10 is held in the interior of the cavity 3 on an actuating rod 9 which passes through the cavity 3 in the longitudinal direction and exits from it in a sealed manner, and a throttle body 11 is held at the free end of the actuating rod 9 in the region of the throttle point 6.
  • a compression spring 12 surrounds the actuating rod 9 inside the cavity 3 and is supported on the one hand on the closing body 10 and on the other hand on the opposite wall 13 of the cavity 3, so that the closing body (10) is pressed by the compression spring 12 against the opening 4 and this closes.
  • the throttle body 11 is immersed over its entire length in the area of the spray line 7 referred to above as the throttle point 6, as shown in FIG.
  • the actuating rod passes through an actuating lever 15 pivotably mounted on the handpiece 1; the end protruding through the actuating lever 15 carries a widening 16.
  • the actuating rod 9 can be displaced against the action of the compression spring 12, so that on the one hand the closing body 10 lifts off the opening 4 and releases it, while on the other hand the immersion depth of the Throttle body 11 in the throttle point 6 is reduced. Thereby, the high-pressure line is opened on the one hand and on the other hand can be carried stepped pivoting of the actuating lever 15 ili dose amount of R eini un B B SME diums that the throttle point can happen. 6
  • a valve body 18 In a channel 17 running perpendicular to the branch space 5, a valve body 18 is rotatably mounted, which has a central blind bore 19 which is connected to the branch space 5.
  • a branch line 20 emerges from this in the radial direction of the valve body 18 and extends to the circumference of the valve body 18.
  • the valve body On both sides of the branch line 20, the valve body is sealed off from the inner wall of the channel 17 by inserted seals 21 and 22.
  • branch line 20 there is a further radial branch line 24, which is angularly offset in the circumferential direction with respect to the first branch line 20.
  • valve body 18 in the channel 17 can be rotated into different positions, which will be explained further below.
  • a connecting line 25 opens into the channel 17 and connects the channel 17 to a valve chamber 26. This is on the opposite side with an outlet line 27 which opens into the open.
  • a valve seat 28 is arranged in the region of the transition from the valve chamber 26 into the outlet line 27; the connecting line 25 is also surrounded in the interior of the valve chamber 26 by an annular valve seat 29.
  • a valve body 30 designed as a stepped piston, which has a large diameter in its end facing the valve seat 29, but has a smaller diameter on the opposite side.
  • valve body 30 is surrounded by a compression spring 31, which is supported on the one hand on the inner wall of the valve chamber 26 and on the other hand on the valve body 30 itself and thus presses it against the valve seat 29, as can be seen from FIG. 1.
  • the valve body 30 can be moved in the direction of the outlet line 27, so that it finally closes it.
  • the part of the valve body adjacent to the valve seat 29 forms a throttle in the cylindrical valve chamber 26.
  • a circumferential groove 32 of small cross-section is located on the piston, the outer diameter of which corresponds approximately to the inner diameter of the valve chamber 26.
  • the outer diameter of the valve body 30 can be somewhat smaller than the inner diameter of the valve chamber 26, so that there is an annular gap between the valve body 30 and the valve chamber 26, which acts as a throttle point.
  • the branch line 20 in the valve body 18 can be connected to the connecting line 25 by suitable rotation of the valve body 18 and thus to the outlet line 27 via the valve space.
  • a corresponding connecting line 33 is assigned to the second branch line 24 and is also connected to an outlet line 34 via a valve space (not shown in the drawing).
  • a valve body constructed in the same way as the valve body 30 is located in the valve chamber assigned to the branch line 24.
  • valve body 18 in the channel 17 to connect the branch space 5 either to the first outlet line 27 via the first branch line 20 or to the second outlet line 34 via the second branch line 24 or each connection of the branch space to one of the To close outlet lines.
  • the high-pressure line 2 is connected to the pressure outlet 35 of a high-pressure pump 36, to which a cleaning medium to be sprayed is fed from a suction line 37.
  • the high-pressure line 2 is also connected to a pressure compensation vessel 38 and to a pressure switch 39, which is only shown schematically in the drawing and by means of which the high-pressure pump 36 can be switched on and off.
  • the high-pressure line 2 is connected to the interior of a chamber 40, which is divided into two sub-spaces 42 and 43 by a piston 41 that is sealed in it.
  • the high-pressure line 2 opens into the first partial space 42, while in the second partial space there is a compression spring 44, which is supported on the one hand on the piston 41 and on the other hand on the inner wall of the chamber 40 and the piston 41 against a step 45 in the first partial space 42 presses.
  • An actuating rod 46 connected to the piston protrudes from the second sub-space 43 and carries a constriction 47.
  • a switch 48 is arranged adjacent to the protruding end of the actuating rod 46, which switch is actuated by the actuating rod 46, but which is released when the constriction changes 47 is located next to a switching element 49 of the switch.
  • the switch 48 is connected to a timer circuit 50, which is shown only schematically in the drawing. This time circuit 50 receives switch-on and switch-off signals from the switch when the piston is displaced and determines the time interval between these signals.
  • This time interval is compared with a fixed value, and if the time interval exceeds a certain value, the timer circuit 50 generates a control signal which is fed via a control line 51, for example to a chemical metering device (not shown in the drawing) or to a burner, of a heating device of the high-pressure cleaning device.
  • the piston 41 When the pressure rises to the operating pressure, the piston 41 is displaced in the chamber 40 by the cleaning liquid against the force of the spring 44.
  • the dimensioning is chosen so that the switch which is actuated first is released when the pressure rises to a lower limit value p u , since the switching element 49 reaches the region of the constriction 47.
  • the switch 48 is actuated again by the actuating rod 46.
  • the time circuit compares this pressure rise time t 1 with a target value that is selected so that it is greater than t 1 . If the pressure rise time is less than the target value, the timer circuit 50 does not generate a control signal for the chemical metering and / or the activation of the burner.
  • the operating pressure p B is maintained as long as the hand lever 15 is actuated. If the operator lets go of the handle 15, the opening 4 is closed, so that a higher pressure builds up in the high-pressure line 2. As soon as this pressure exceeds a value P out , the pressure switch 39 responds and switches off the high-pressure pump 36. Since the high-pressure line is closed in this operating state 2, the cleaning liquid remains off on the pressure P, where here consciously occurring in reality leakage losses are neglected.
  • valve body 18 In a second operating mode, the valve body 18 is rotated in the channel 17 by means of the handle 23 so that the branch space 5 is connected to the outlet line 27 via the longitudinal bore 19 and the branch light 20.
  • the pressure behavior in this case is shown by the dashed curve 2 in Figure 2.
  • the spray nozzle 8 is connected in parallel with a second flow path, so that the pressure increases more slowly, ie the operating pressure p B is reached later than in the case of normal operation described above.
  • the lower limit value p u is reached at a point in time t 2u
  • the upper limit value p o at a point in time t 20 , so that overall there is a pressure rise time t 2 which is significantly longer than the pressure rise time t in normal operation.
  • the timing circuit 50 compares the time t 2 with the target time, which is chosen to be lower. Since t 2 is greater than the target time, the timing circuit 50 generates a control signal which is fed via the control line 51 to the chemical admixture, for example. In this way, the chemical supply is switched on and mixes a chemical into the cleaning liquid.
  • the hand-held spray gun essentially sprays cleaning medium, to which a chemical has been added, via the spray nozzle 8; a part of this amount of liquid is discharged via the outlet line 27.
  • the hand lever 15 is again closed the opening 4, so that the pressure in the high pressure line increases, until, upon reaching the Ausschalttikes P is disconnected from the high-pressure pump. Opening the opening 4 by actuation of the hand lever 15 again, the pressure in the high pressure line steeply until at a pressure P, a high pressure pump is switched on again.
  • the pressure rise now takes place either according to curve 2a, if branch space 5 has been separated again by turning valve body 18 in channel 17, or according to curve 2b, if valve body 18 remains untwisted.
  • valve body 30 A slight change in the pressure behavior results from the presence of the valve body 30 in the valve chamber 26 described above. This is shown by the dash-dotted curve 3 in FIG. 2. Even if the valve body 18 is set so that the branch line 20 opens into the valve chamber 26, at At low pressures, no cleaning medium initially enters the valve chamber 26, since the latter is closed by the valve body 30. The valve body 30 is only lifted from the valve seat 29 at an opening pressure Pauf , ie up to this pressure the pressure increases with the same steepness as in the case of normal operation. However, as soon as the valve body 30 is lifted off the valve seat 29, part of the cleaning medium can flow through the outlet line 27, ie a pressure increase corresponding to that of curve 2 is obtained.
  • the operating pressure p B at 100 may for example be bars, the cut-off p at 110 bar.
  • the threshold pressure P a can be 15 bar, the lower limit value u p at 20 bar and the upper limit value P o at 45 bar.
  • the pressure at which the valve body 30 lifts from the valve seat 29 is below the cut-in P a, for example at 10 bar, the pressure at which the valve body 30, the outlet conduit seals 27, between the upper limit value p o and the operating pressure p B, for example at 70 bar.
  • the total rise time until the operating pressure is reached in normal operation can be, for example, 0.3 seconds, and the pressure rise time t 1 can be, for example, 0.15 seconds. If the pressure increase is delayed, the time until the operating pressure is reached can, for example, increase to 0.7 seconds, and the time t 2 or t 3 (curves 2 and 3) is then, for example, 0.4 seconds.
  • the determination of the pressure rise time between the limit values p " and p o can of course also be carried out in a different way, for example by means of a pressure sensor (e.g. piezoelectric crystal, strain gauges etc.) which generates signals proportional to pressure, or with two separate pressure sensors, each of which reaches the generate a signal below the lower limit or the upper limit.
  • a pressure sensor e.g. piezoelectric crystal, strain gauges etc.

Landscapes

  • Cleaning By Liquid Or Steam (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Gas Separation By Absorption (AREA)
  • Manipulator (AREA)
  • Nozzles (AREA)
  • Dram (AREA)
  • Debugging And Monitoring (AREA)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Cleaning In General (AREA)
  • Control Of Fluid Pressure (AREA)

Claims (13)

1. Procédé de commande d'un appareil de nettoyage haute pression délivrant par une buse un fluide de nettoyage d'une pompe haute pression fait circuler dans une canalisation haute pression munie d'une soupape de fermeture, et dans lequel la pompe haute pression est branchée et coupée en fonction de la pression dans la canalisation haute pression, la pompe étant branchée quand la pression dans la canalisation haute pression tombe au-dessous de la pression de branchement qui est inférieure à la pression de service qui s'établit quand la pompe haute pression est en marche et la soupape de fermeture totalement ou partiellement ouverte, ledit procédé étant caractérisé en ce qu'un second circuit obturable est branché en parallèle avec le circuit passant par la buse pour la production d'un signal de commande ; le temps de croissance de la pression dans le fluide de nettoyage est déterminé après le branchement de la pompe et le signal de commande est délivré quand l'ouverture du second circuit prolonge ledit temps de croissance de la pression par rapport à sa valeur avec second circuit fermé.
2. Procédé selon la revendication 1, caractérisé en ce que le second circuit est obturé au plus tard quand la pression de service est atteinte.
3. Appareil de nettoyage haute pression pour la mise en oeuvre du procédé selon une des revendications 1 ou 2, avec une pompe haute pression, une canalisation haute pression reliant ladite pompe à une lance et comportant une soupape de fermeture, et un capteur de pression disposé en amont de la soupape de fermeture et délivrant un signal de branchement de la pompe haute pression quand la pression tombe au-dessous de sa valeur de branchement, ledit appareil étant caractérisé en ce qu'un second circuit obturable (canalisation de sortie 27 ; canalisation de sortie 34) est prévu en parallèle avec un premier circuit reliant la canalisation haute pression (2) à la lance (7) ; la canalisation haute pression (2) est reliée à un générateur de signal (48), sensible à la pression et connecté à un opérateur temporel (50) ; et l'opérateur temporel (50) délivre un signal de commande quand le temps de croissance (t) entre deux valeurs de pression déterminées (seuil inférieur p,, : seuil supérieur Pol dépasse une valeur déterminée après le branchement de la pompe haute pression (36).
4. Appareil de nettoyage haute pression selon revendication 3, caractérisé en ce que le générateur de signal sensible à la pression comprend deux capteurs de pression délivrant chacun un signal à l'opérateur temporel (50) pour des pressions différentes.
5. Appareil de nettoyage haute pression selon une des revendications 3 ou 4, caractérisé en ce que le générateur de signal sensible à la pression comprend un organe de commutation (41, 46) translaté par le fluide de nettoyage, contre l'action d'un accumulateur de force élastique (44), et actionnant sur diverses positions des interrupteurs (48) reliés à l'opérateur temporel (50).
6. Appareil de nettoyage haute pression selon revendication 5, caractérisé en ce qu'un seul interrupteur (48) est affecté à l'organe de commutation (41, 46), est actionné par ce dernier quand une valeur donnée de la pression est atteinte (seuil inférieur pu), puis de nouveau libéré quand une seconde valeur de la pression est atteinte (seuil supérieur po).
7. Appareil de nettoyage haute pression selon une quelconque des revendications 3 à 6, caractérisé en ce que le signal de commande branche un doseur de produit chimique additionné au fluide de nettoyage et/ou un brûleur d'un dispositif de chauffage.
8. Appareil de nettoyage haute pression selon une quelconque des revendications 3 à 7, caractérisé en ce que le second circuit est dérivé sur le premier aval de la soupape de fermeture (lumière 4 ; obturateur 10).
9. Appareil de nettoyage haute pression selon revendication 8, caractérisé en ce qu'une soupape doseuse (étranglement 6 ; étrangleur 11), est disposée dans le premier circuit (canalisation de pulvérisation 7), en aval de la soupape de fermeture (lumière 4, obturateur 10) ; et le second circuit est dérivé en amont de la soupape doseuse.
10. Appareil de nettoyage haute pression selon une quelconque des revendications 3 à 9, caractérisé par une soupape de fermeture (obturateur 18) commandée manuellement pour le second circuit.
11. Appareil de nettoyage haute pression selon une quelconque des revendications 3 à 10, caractérisé en ce que le second circuit contient un obturateur (30) translatable sur un siège (28) suivant le sens d'écoulement, contre l'action d'un accumulateur de force élastique (31), et s'appliquant avec étanchéité sur le siège (28) au plus tard quand la pression de service pB du fluide de nettoyage est atteinte, de sorte que le second circuit est fermé.
12. Appareil de nettoyage haute pression selon revendications 11, caractérisé en ce que l'obturateur (30) est appliqué au repos, par l'accumulateur de force élastique (31), sur un siège de soupape (29) en amont et obture ainsi le second circuit ; et l'obturateur (30) forme, après décollement du siège (29), un étrangleur dans le second circuit.
13. Appareil de nettoyage haute pression selon une quelconque des revendications 1 à 12, caractérisé en ce que d'autres circuits (canalisation de sortie 34) peuvent être branchés en parallèle avec le premier et le second circuit (canalisation de pulvérisation 7 ; canalisation de sortie 27) ; et l'opérateur temporel (50) délivre des signaux de commande différents pour des prolongations différentes du temps de croissance de la pression par rapport à la valeur de ce temps obtenue quand seul le premier circuit (canalisation de pulvérisation 7) est ouvert.
EP84102113A 1983-03-29 1984-02-29 Procédé pour commander un appareil de nettoyage au jet à haute pression et appareil de nettoyage au jet à haute pression pour effectuer ce procédé Expired EP0120331B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84102113T ATE16899T1 (de) 1983-03-29 1984-02-29 Verfahren zum steuern eines hochdruckreinigungsgeraetes und hochdruckreinigungsgeraet zur durchfuehrung dieses verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3311382A DE3311382C2 (de) 1983-03-29 1983-03-29 Verfahren zum Steuern eines Hochdruckreinigungsgerätes und Hochdruckreinigungsgerät zur Durchführung dieses Verfahrens
DE3311382 1983-03-29

Publications (2)

Publication Number Publication Date
EP0120331A1 EP0120331A1 (fr) 1984-10-03
EP0120331B1 true EP0120331B1 (fr) 1985-12-11

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EP84102113A Expired EP0120331B1 (fr) 1983-03-29 1984-02-29 Procédé pour commander un appareil de nettoyage au jet à haute pression et appareil de nettoyage au jet à haute pression pour effectuer ce procédé

Country Status (9)

Country Link
US (1) US4613074A (fr)
EP (1) EP0120331B1 (fr)
JP (1) JPS59183852A (fr)
AT (1) ATE16899T1 (fr)
AU (1) AU550718B2 (fr)
BR (1) BR8401444A (fr)
DE (1) DE3311382C2 (fr)
DK (1) DK169467B1 (fr)
ES (2) ES531047A0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005028116A1 (de) * 2005-06-13 2006-12-14 Alfred Kärcher Gmbh & Co. Kg Verfahren zum Steuern eines Reinigungsgerätes und Reinigungsgerät zur Durchführung des Verfahrens

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU582383B2 (en) * 1985-09-10 1989-03-23 M. Ahmed Ashraff Pesticide rinser
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AU550718B2 (en) 1986-04-10
DK170584D0 (da) 1984-03-28
DE3311382A1 (de) 1984-10-11
ES8501644A1 (es) 1984-12-01
JPS59183852A (ja) 1984-10-19
DE3311382C2 (de) 1985-02-21
ES531047A0 (es) 1984-12-01
JPH0329467B2 (fr) 1991-04-24
DK170584A (da) 1984-09-30
ES8505559A1 (es) 1985-06-01
AU2554484A (en) 1984-10-04
US4613074A (en) 1986-09-23
BR8401444A (pt) 1984-11-06
DK169467B1 (da) 1994-11-07
ATE16899T1 (de) 1985-12-15
ES536039A0 (es) 1985-06-01
EP0120331A1 (fr) 1984-10-03

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