EP1250959A1 - Nozzle and wash system with such a nozzle - Google Patents

Nozzle and wash system with such a nozzle Download PDF

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Publication number
EP1250959A1
EP1250959A1 EP01401012A EP01401012A EP1250959A1 EP 1250959 A1 EP1250959 A1 EP 1250959A1 EP 01401012 A EP01401012 A EP 01401012A EP 01401012 A EP01401012 A EP 01401012A EP 1250959 A1 EP1250959 A1 EP 1250959A1
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EP
European Patent Office
Prior art keywords
nozzle
valve
pressure
low pressure
high pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP01401012A
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German (de)
French (fr)
Inventor
Laurent Duclaux
Didier Beslon
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California Kleidienst France
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California Kleidienst France
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Publication date
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Priority to EP01401012A priority Critical patent/EP1250959A1/en
Publication of EP1250959A1 publication Critical patent/EP1250959A1/en
Withdrawn legal-status Critical Current

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    • 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
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/16—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets
    • B05B1/1609—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening having selectively- effective outlets with a selecting mechanism comprising a lift valve
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3006—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the controlling element being actuated by the pressure of the fluid to be sprayed
    • 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
    • B08B2203/007—Heating the liquid
    • 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
    • B08B2203/0217—Use of a detergent in high pressure cleaners; arrangements for supplying the same

Definitions

  • the present invention relates to a nozzle operating at different pressure levels and a washing system equipped with this nozzle.
  • the present invention aims to overcome these drawbacks.
  • nozzle operating at low and high pressure characterized in that it comprises an inlet channel dividing into two dedicated channels, one for high pressure and the other for low pressure, each channel having a nozzle adapted to the pressure corresponding and a valve with a spring cooperating with a member mobile closure, the characteristics of each nozzle and the calibration of the spring of the associated valve being determined so as to allow automatic switching from one valve to another.
  • the nozzle advantageously comprises two independent sprinklers whose characteristics can therefore be optimized for both low and high pressure operation optimized, and an automatic switching system using robust mechanical parts, the movable member can be a simple metal ball.
  • a pressure is advantageously provided between each valve and nozzle, the dimensions of which can also be configured to achieve the automatic nozzle switching.
  • each nozzle can be its angle opening and its flow.
  • each spring is a function of the high and low pressure chosen as well as the field of application (in a particular, for industrial vehicles etc.). These characteristics can be the diameter, stiffness and length of the spring.
  • a cleaning system comprising means for establishing a high pressure in fluid cleaning, means for establishing a low pressure in said fluid cleaning means for alternately supplying fluid high or low pressure cleaning in a cleaning lance fitted a nozzle, characterized in that said nozzle has the characteristics stated according to the invention.
  • the system according to the invention comprises a water buffer tank 1 supplying a booster 2 designed to raise the water pressure to a so-called low pressure, here 7.5 bars. Leaving the booster 2 divides into a branch 3 supplying a softener of water 4 and a branch 5 supplying via a solenoid valve 6 a pump high pressure 7 intended to raise the water pressure to a pressure so-called high pressure, here 100 bars.
  • the softener 4 outlet is also divides into two branches: the first branch 8 supplies via a non-return valve 9 a boiler 10 provided for raising the temperature of the water leaving the softener 4 and then delivering to a mixing manifold 11, via a solenoid valve 12 and a valve 13, warm softened water, here at 50 ° C; the second branch 14 supplies via a solenoid valve 15 also the high pressure pump 7. Water hard or softened exiting at high pressure from this pump 7 supplies the feeder mixer 11 via a non-return valve 16. The feeder mixer 11 also receives foaming soap via a valve 17 which is withdrawn using a metering pump 18 in a tank 19. The manifold 11 also still receives compressed air at 6 bars via a valve 20.
  • This lance 21 comprises a two-position weeping trigger 24 for blocking or unblock the water supply in channel 25 of nozzle 22.
  • One unit control center (not shown) controls the operation of the system according to programmed parameters, such as values of low and high pressure, the boiler heating temperature, the dose of foaming soap or the hardness of the water at the outlet of softener, and as instructed by the system user.
  • the system can operate in one washing mode and two washing modes rinsing. In the washing mode, the feeder 11 is supplied with hot water softened at low pressure, air tablet and foaming soap. The two rinsing modes are with cold water either softened or hard.
  • trigger 24 operates a switch (not shown) connected to the central control unit of the system, then pull the trigger again to release the water outlet.
  • the nozzle 22 has a single inlet channel 25 dividing into two low pressure 26 and high pressure 27 channels.
  • Each channel 26, 27 comprises, starting from the inlet channel 25, a straight portion respectively 26a, 27a, deviating from the general axis A of the channel 25 at an angle of about 20 °, then a straight portion respectively 26b, 27b in which a shoulder is formed respectively 26c, 27c widening the diameter of this straight portion to the end of the nozzle.
  • the end portion of the straight portions 26b and 27b is threaded for securing a valve, respectively 28, 29, and a nozzle 30 and 31 between which is defined a pressure chamber 32 and 33 respectively.
  • Each valve 28, 29 has a skirt respectively 28a, 29a, defining a housing respectively 28b, 29b for a spring calibrated in stainless steel respectively 34, 35, said skirt comprising at its end opposite the nozzle a flange, respectively 28c, 29c, defining an opening, respectively 28d, 29d, entering the pressure chamber 32, 33 respectively and the opposite face of the housing respectively 28b, 29b, serves as a face support at one end of the spring respectively 34, 35.
  • the outer end part of the skirt, respectively 28th, 29th is threaded to cooperate with the walls of the associated channel 26, 27.
  • the skirt 28a, 29a takes support on a washer, respectively 36, 37, itself wedged on the shoulder respectively 26c, 27c, of the channel respectively 26, 27, said washer defining an inlet opening respectively 38, 39 in the valve.
  • the movable member for closing each valve cooperating on the one hand with the free end of the valve spring, respectively 40, 41, and, on the other hand, with the inlet opening of the valve, respectively 38, 39, consists of a metal ball respectively 42, 43, here in stainless steel and 9 mm in diameter.
  • Each nozzle 30, 31 has an external thread for its attachment to the end of the associated channel 26 or 27 and a calibrated bore respectively 30a, 31a for the pressurized liquid outlet washing or rinsing.
  • valves 28, 29, and the nozzles 30, 31 of the low pressure 26 and high pressure 27 channels have different geometrical and physical characteristics to allow automatic switching from one channel to another when the user switches from one mode to another as explained above.
  • the liquid arriving through the channel central 25 will enter parts 26a and 27a located before the low pressure and high pressure valves.
  • the calibration of spring 35 is such that the low pressure applied to the ball 39 is not enough to move it. So only the low pressure side will be crossed by the liquid.
  • the switching is will do as follows.
  • the high pressure liquid enters the valve low pressure which remained open and we observe a very strong pressure build-up in the pressure chamber 32 due to the presence of the nozzle 30 which is not configured for such a pressure and which therefore constitutes an obstacle to the flow.
  • the high pressure side valve 29 opened, leading also an increase in pressure in the upper chamber pressure 33 and at a flow rate adapted to this high pressure via the nozzle high pressure 31.
  • the flow setting of the high pressure nozzle 31 has has the effect of reducing the inlet pressure of the nozzle 22 upstream valves by a pressure drop and the pressure at the inlet of the low pressure chamber 32 is then below the pressure in the low pressure chamber 32, which leads to a pressure negative differential and therefore a blockage of the low pressure valve. Switching is done automatically.

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  • Nozzles (AREA)

Abstract

Nozzle (22) has an inlet channel (25), divided in two channels (26,27) one for the high pressure and the other for low pressure. Each of the channels has a jet (30,31) adapted to the pressure and a flap valve (28,29) with a spring (34,35) and a closing organ (42,43). An Independent claim is also included for the washing system using this kind of nozzle.

Description

La présente invention concerne une buse fonctionnant à différents niveaux de pression et un système de lavage équipé de cette buse.The present invention relates to a nozzle operating at different pressure levels and a washing system equipped with this nozzle.

Elle s'applique plus particulièrement au domaine du nettoyage des carrosseries automobiles, une basse pression étant utilisée pour la phase de lavage et une haute pression pour la phase de rinçage. Actuellement pour distribuer ces deux niveaux de pression, on utilise une buse à gicleur unique alimentée à la demande de l'utilisateur soit en basse pression soit en haute pression. L'inconvénient d'une telle buse vient du fait que l'on est obligé d'avoir un compromis des caractéristiques d'une buse qui serait adaptée à chaque niveau de pression, comme l'angle d'ouverture du gicleur ou le matériau utilisé. Le résultat du lavage et du rinçage ne peut ainsi être optimisé. Par ailleurs, l'aiguilleur utilisé pour commuter d'un mode de pression à l'autre est une pièce mécanique fragile.It applies more particularly to the field of cleaning automobile bodies, low pressure being used for washing phase and high pressure for the rinsing phase. Currently to distribute these two pressure levels, we use a single nozzle nozzle supplied at the user's request either at low pressure or at high pressure. The downside of such nozzle comes from the fact that we have to have a compromise of characteristics of a nozzle which would be adapted to each level of pressure, such as the nozzle opening angle or the material used. The result of washing and rinsing cannot therefore be optimized. Through elsewhere, the switch used to switch from a pressure mode to the other is a fragile mechanical part.

La présente invention a pour but de pallier ces inconvénients.The present invention aims to overcome these drawbacks.

Elle propose une buse fonctionnant à basse et haute pression, caractérisée en ce qu'elle comporte un canal d'arrivée se divisant en deux canaux dédiés l'un à la haute pression et l'autre à la basse pression, chaque canal comportant un gicleur adapté à la pression correspondante et un clapet avec un ressort coopérant avec un organe mobile de fermeture, les caractéristiques de chaque gicleur et le tarage du ressort du clapet associé étant déterminés de manière à permettre la commutation automatique d'un clapet à l'autre.It offers a nozzle operating at low and high pressure, characterized in that it comprises an inlet channel dividing into two dedicated channels, one for high pressure and the other for low pressure, each channel having a nozzle adapted to the pressure corresponding and a valve with a spring cooperating with a member mobile closure, the characteristics of each nozzle and the calibration of the spring of the associated valve being determined so as to allow automatic switching from one valve to another.

Ainsi, selon l'invention, la buse comporte avantageusement deux gicleurs indépendants dont les caractéristiques peuvent donc être optimisées pour un fonctionnement à la fois en basse et haute pression optimisé, et un système de commutation automatique utilisant des pièces mécaniques robustes, l'organe mobile pouvant être une simple bille métallique. Thus, according to the invention, the nozzle advantageously comprises two independent sprinklers whose characteristics can therefore be optimized for both low and high pressure operation optimized, and an automatic switching system using robust mechanical parts, the movable member can be a simple metal ball.

Selon un mode de réalisation particulier, une chambre de pression est avantageusement ménagée entre chaque clapet et gicleur, dont les dimensions peuvent en outre être paramètrées pour réaliser la commutation automatique de la buse.According to a particular embodiment, a pressure is advantageously provided between each valve and nozzle, the dimensions of which can also be configured to achieve the automatic nozzle switching.

Les caractéristiques de chaque gicleur peuvent être son angle d'ouverture et son débit.The characteristics of each nozzle can be its angle opening and its flow.

Les caractéristiques de chaque ressort sont fonction des haute et basse pression choisies ainsi que du domaine d'application (chez un particulier, pour des véhicules industriels etc.). Ces caractéristiques peuvent être le diamètre, la raideur et la longueur du ressort.The characteristics of each spring are a function of the high and low pressure chosen as well as the field of application (in a particular, for industrial vehicles etc.). These characteristics can be the diameter, stiffness and length of the spring.

Il est proposé également un système de nettoyage comportant des moyens pour établir une haute pression dans du fluide de nettoyage, des moyens pour établir une basse pression dans ledit fluide de nettoyage, des moyens pour délivrer alternativement du fluide de nettoyage haute ou basse pression dans une lance de nettoyage munie d'une buse, caractérisé en ce que ladite buse présente les caractéristiques énoncées selon l'invention.It is also proposed a cleaning system comprising means for establishing a high pressure in fluid cleaning, means for establishing a low pressure in said fluid cleaning means for alternately supplying fluid high or low pressure cleaning in a cleaning lance fitted a nozzle, characterized in that said nozzle has the characteristics stated according to the invention.

La présente invention sera mieux comprise et d'autres avantages apparaítront à la lumière de la description qui va suivre d'un exemple de réalisation, description faite en référence aux dessins sur lesquels :

  • la figure 1 est un schéma synoptique d'un exemple de système selon l'invention destiné au lavage de carrosseries automobiles ; et
  • la figure 2 une vue en coupe longitudinale de la buse selon l'invention utilisée dans le système de la figure 1.
The present invention will be better understood and other advantages will appear in the light of the following description of an embodiment, description made with reference to the drawings in which:
  • FIG. 1 is a block diagram of an exemplary system according to the invention intended for washing automobile bodies; and
  • FIG. 2 a view in longitudinal section of the nozzle according to the invention used in the system of FIG. 1.

Le système selon l'invention comporte un bac tampon d'eau 1 alimentant un surpresseur 2 prévu pour élever la pression de l'eau à une pression dite basse pression, ici de 7,5 bars. La sortie du surpresseur 2 se divise en une branche 3 alimentant un adoucisseur d'eau 4 et une branche 5 alimentant via une électrovanne 6 une pompe haute pression 7 prévue pour élever la pression de l'eau à une pression dite haute pression, ici de 100 bars. La sortie de l'adoucisseur 4 se divise également en deux branches : la première branche 8 alimente via une vanne anti-retour 9 une chaudière 10 prévue pour élever la température de l'eau sortant de l'adoucisseur 4 pour ensuite délivrer à une nourrice mélangeuse 11, via une électrovanne 12 et une valve 13, une eau adoucie chaude, ici à 50°C ; la seconde branche 14 alimente via une électrovanne 15 également la pompe haute pression 7. L'eau dure ou adoucie sortant à haute pression de cette pompe 7 alimente la nourrice mélangeuse 11 via une vanne anti-retour 16. La nourrice mélangeuse 11 reçoit également via une valve 17 un savon moussant lequel est prélevé à l'aide d'une pompe doseuse 18 dans un réservoir 19. La nourrice 11 reçoit par ailleurs encore de l'air comprimé à 6 bars via une valve 20. Une lance de nettoyage 21, munie d'une buse 22 selon l'invention qui sera décrite ci-après, est reliée par un tuyau 23 à la sortie de la nourrice mélangeuse 11. Cette lance 21 comporte une gâchette pleureuse 24 à deux positions permettant de bloquer ou de débloquer l'arrivée d'eau dans le canal 25 de la buse 22. Une unité centrale de contrôle (non représentée) commande le fonctionnement du système selon des paramètres programmées, comme les valeurs des basse et haute pression, la température de chauffe de la chaudière, la dose de savon moussant ou la dureté de l'eau à la sortie de l'adoucisseur, et selon les instructions de l'utilisateur du système. Le système peut fonctionner selon un mode de lavage et deux modes de rinçage. Dans le mode de lavage, la nourrice mélangeuse 11 est alimentée par de l'eau chaude adoucie à basse pression, de l'air comprimé et de savon moussant. Les deux modes de rinçage se font avec de l'eau froide soit adoucie soit dure. Pour passer d'un mode à un autre, l'utilisateur relâche la gâchette 24, actionne un commutateur (non représenté) relié à l'unité centrale de contrôle du système, puis actionne de nouveau la gâchette pour libérer la sortie d'eau.The system according to the invention comprises a water buffer tank 1 supplying a booster 2 designed to raise the water pressure to a so-called low pressure, here 7.5 bars. Leaving the booster 2 divides into a branch 3 supplying a softener of water 4 and a branch 5 supplying via a solenoid valve 6 a pump high pressure 7 intended to raise the water pressure to a pressure so-called high pressure, here 100 bars. The softener 4 outlet is also divides into two branches: the first branch 8 supplies via a non-return valve 9 a boiler 10 provided for raising the temperature of the water leaving the softener 4 and then delivering to a mixing manifold 11, via a solenoid valve 12 and a valve 13, warm softened water, here at 50 ° C; the second branch 14 supplies via a solenoid valve 15 also the high pressure pump 7. Water hard or softened exiting at high pressure from this pump 7 supplies the feeder mixer 11 via a non-return valve 16. The feeder mixer 11 also receives foaming soap via a valve 17 which is withdrawn using a metering pump 18 in a tank 19. The manifold 11 also still receives compressed air at 6 bars via a valve 20. A cleaning lance 21, provided with a nozzle 22 according to the invention which will be described below, is connected by a pipe 23 to the outlet of the feeder nurse 11. This lance 21 comprises a two-position weeping trigger 24 for blocking or unblock the water supply in channel 25 of nozzle 22. One unit control center (not shown) controls the operation of the system according to programmed parameters, such as values of low and high pressure, the boiler heating temperature, the dose of foaming soap or the hardness of the water at the outlet of softener, and as instructed by the system user. The system can operate in one washing mode and two washing modes rinsing. In the washing mode, the feeder 11 is supplied with hot water softened at low pressure, air tablet and foaming soap. The two rinsing modes are with cold water either softened or hard. To switch from one mode to another other, user releases trigger 24, operates a switch (not shown) connected to the central control unit of the system, then pull the trigger again to release the water outlet.

La structure et le fonctionnement de la buse 22 selon l'invention sont maintenant expliqués en référence à la figure 2.The structure and operation of the nozzle 22 according to the invention are now explained with reference to Figure 2.

La buse 22 comporte un canal d'arrivée unique 25 se divisant en deux canaux basse pression 26 et haute pression 27. Chaque canal 26, 27 comprend en partant du canal d'arrivée 25 une portion droite respectivement 26a, 27a, s'écartant par rapport à l'axe général A du canal 25 d'un angle d'environ 20°, puis une portion droite respectivement 26b, 27b dans laquelle est formée un épaulement respectivement 26c, 27c élargissant le diamètre de cette portion droite jusqu'à l'extrémité de la buse. La partie terminale des portions droites 26b et 27b est filetée pour l'assujettissement d'un clapet, respectivement 28, 29, et d'un gicleur 30 et 31 entre lesquels est définie une chambre de pression respectivement 32 et 33.The nozzle 22 has a single inlet channel 25 dividing into two low pressure 26 and high pressure 27 channels. Each channel 26, 27 comprises, starting from the inlet channel 25, a straight portion respectively 26a, 27a, deviating from the general axis A of the channel 25 at an angle of about 20 °, then a straight portion respectively 26b, 27b in which a shoulder is formed respectively 26c, 27c widening the diameter of this straight portion to the end of the nozzle. The end portion of the straight portions 26b and 27b is threaded for securing a valve, respectively 28, 29, and a nozzle 30 and 31 between which is defined a pressure chamber 32 and 33 respectively.

Chaque clapet 28, 29, comporte une jupe respectivement 28a, 29a, définissant un logement respectivement 28b, 29b pour un ressort taré en acier inoxydable respectivement 34, 35, ladite jupe comportant à son extrémité en regard du gicleur une collerette, respectivement 28c, 29c, définissant une ouverture, respectivement 28d, 29d, d'entrée dans la chambre de pression respectivement 32, 33 et dont la face en regard du logement respectivement 28b, 29b, sert de face d'appui à l'une des extrémités du ressort respectivement 34, 35. La partie terminale extérieure de la jupe, respectivement 28e, 29e, est filetée pour coopérer avec les parois du canal associé 26, 27. A son extrémité opposée à la collerette 28c, 29c, la jupe 28a, 29a, prend appui sur une rondelle, respectivement 36, 37, elle même calée sur l'épaulement respectivement 26c, 27c, du canal respectivement 26, 27, ladite rondelle définissant une ouverture d'entrée respectivement 38, 39 dans le clapet. L'organe mobile de fermeture de chaque clapet coopérant d'une part avec l'extrémité libre du ressort du clapet, respectivement 40, 41, et, d'autre part, avec l'ouverture d'entrée du clapet, respectivement 38, 39, est constitué d'une bille métallique respectivement 42, 43, ici en acier inoxydable et de 9 mm de diamètre.Each valve 28, 29 has a skirt respectively 28a, 29a, defining a housing respectively 28b, 29b for a spring calibrated in stainless steel respectively 34, 35, said skirt comprising at its end opposite the nozzle a flange, respectively 28c, 29c, defining an opening, respectively 28d, 29d, entering the pressure chamber 32, 33 respectively and the opposite face of the housing respectively 28b, 29b, serves as a face support at one end of the spring respectively 34, 35. The outer end part of the skirt, respectively 28th, 29th, is threaded to cooperate with the walls of the associated channel 26, 27. At its opposite end to the flange 28c, 29c, the skirt 28a, 29a, takes support on a washer, respectively 36, 37, itself wedged on the shoulder respectively 26c, 27c, of the channel respectively 26, 27, said washer defining an inlet opening respectively 38, 39 in the valve. The movable member for closing each valve cooperating on the one hand with the free end of the valve spring, respectively 40, 41, and, on the other hand, with the inlet opening of the valve, respectively 38, 39, consists of a metal ball respectively 42, 43, here in stainless steel and 9 mm in diameter.

Chaque gicleur 30, 31, comporte un filetage extérieur pour sa fixation à l'extrémité du canal associé 26 ou 27 et un perçage calibré respectivement 30a, 31a pour la sortie en jet sous pression du liquide de lavage ou de rinçage.Each nozzle 30, 31 has an external thread for its attachment to the end of the associated channel 26 or 27 and a calibrated bore respectively 30a, 31a for the pressurized liquid outlet washing or rinsing.

Selon l'invention, les clapets 28, 29, et les gicleurs 30, 31 des canaux basse pression 26 et haute pression 27 présentent des caractéristiques géométriques et physiques différentes pour permettre une commutation automatique d'un canal à l'autre lorsque l'utilisateur commute d'un mode à un autre comme expliqué plus haut.According to the invention, the valves 28, 29, and the nozzles 30, 31 of the low pressure 26 and high pressure 27 channels have different geometrical and physical characteristics to allow automatic switching from one channel to another when the user switches from one mode to another as explained above.

Ces caractéristiques sont répertoriées dans le tableau ci-après.

Figure 00050001
These characteristics are listed in the table below.
Figure 00050001

Du fait de leur tarage respectif, au repos le ressort 34 du clapet basse pression 28 est tel que la bille 42 est dégagée de l'ouverture 38 du clapet et le ressort 35 du clapet haute pression 29 est par contre tel que la bille 43 ferme le clapet haute pression.Due to their respective calibration, at rest the spring 34 of the valve low pressure 28 is such that the ball 42 is released from the opening 38 of the valve and the spring 35 of the high pressure valve 29 is on the other hand such that ball 43 closes the high pressure valve.

En fonctionnement basse pression, le liquide arrivant par le canal central 25 va pénétrer dans les parties 26a et 27a situées avant les clapets basse pression et haute pression. Du côté haute pression, le tarage du ressort 35 est tel que la basse pression appliquée sur la bille 39 ne suffit pas à la déplacer. Ainsi, seule le côté basse pression sera traversé par le liquide.In low pressure operation, the liquid arriving through the channel central 25 will enter parts 26a and 27a located before the low pressure and high pressure valves. On the high pressure side, the calibration of spring 35 is such that the low pressure applied to the ball 39 is not enough to move it. So only the low pressure side will be crossed by the liquid.

Pour un fonctionnement en haute pression, la commutation se fera de la manière suivante. L'utilisateur appui sur la gâchette 24 de la lance pour fermer l'arrivée de liquide, actionne le commutateur vers la haute pression (en sélectionnant comme on l'a vu de l'eau froide soit adoucie, soit dure), et appui à nouveau sur la gâchette 24 pour ouvrir l'arrivée de liquide cette fois sous haute pression. Pendant un court laps de temps, le liquide sous haute pression pénètre dans le clapet basse pression qui est resté ouvert et l'on observe une très forte montée de la pression dans la chambre de pression 32 du fait de la présence du gicleur 30 qui n'est pas paramètré pour une telle pression et qui constitue donc un obstacle à l'écoulement. Dans le même temps, le clapet 29 côté haute pression s'est ouvert, conduisant également à une augmentation de pression dans la chambre haute pression 33 et à un débit adapté à cette haute pression via le gicleur haute pression 31. La mise en débit du gicleur haute pression 31 a pour effet de diminuer la pression en entrée de la buse 22 en amont des clapets par une perte de charge et la pression en entrée de la chambre basse pression 32 se trouve alors inférieure à la pression dans la chambre basse pression 32, ce qui conduit à une pression différentielle négative et donc à un blocage du clapet basse pression. La commutation se fait ainsi automatiquement.For high pressure operation, the switching is will do as follows. The user presses the trigger 24 of the launches to close the liquid supply, operates the switch to the high pressure (by selecting as we have seen cold water either softened, either hard), and press the trigger 24 again to open the arrival of liquid this time under high pressure. During a short time, the high pressure liquid enters the valve low pressure which remained open and we observe a very strong pressure build-up in the pressure chamber 32 due to the presence of the nozzle 30 which is not configured for such a pressure and which therefore constitutes an obstacle to the flow. In the same time, the high pressure side valve 29 opened, leading also an increase in pressure in the upper chamber pressure 33 and at a flow rate adapted to this high pressure via the nozzle high pressure 31. The flow setting of the high pressure nozzle 31 has has the effect of reducing the inlet pressure of the nozzle 22 upstream valves by a pressure drop and the pressure at the inlet of the low pressure chamber 32 is then below the pressure in the low pressure chamber 32, which leads to a pressure negative differential and therefore a blockage of the low pressure valve. Switching is done automatically.

Il va de soi que des variantes de réalisation sont possibles, notamment en ce qui concernent le paramètrage des caractéristiques des clapets et des gicleurs permettant d'obtenir la commutation automatique. Par ailleurs, on pourrait faire varier d'autres paramètres structurels comme la taille des chambres de pression 32, 33.It goes without saying that variant embodiments are possible, especially with regard to the configuration of characteristics valves and nozzles for switching automatic. In addition, we could vary other parameters structural such as the size of the pressure chambers 32, 33.

Claims (10)

Buse (22) fonctionnant à basse et haute pression, caractérisée en ce qu'elle comporte un canal d'arrivée (25) se divisant en deux canaux (26,27) dédiés l'un à la haute pression et l'autre à la basse pression, chaque canal (26,27) comportant un gicleur (30,31) adapté à la pression correspondante et un clapet (28,29) avec un ressort (34,35) coopérant avec un organe mobile de fermeture (42,43), les caractéristiques de chaque gicleur et le tarage du ressort du clapet associé étant déterminés de manière à permettre la commutation automatique d'un clapet à l'autre.Nozzle (22) operating at low and high pressure, characterized in that it comprises an inlet channel (25) dividing into two channels (26,27) dedicated one for high pressure and the other for low pressure, each channel (26,27) comprising a nozzle (30,31) adapted to the corresponding pressure and a valve (28,29) with a spring (34,35) cooperating with a movable closure member (42,43 ), the characteristics of each nozzle and the setting of the spring of the associated valve being determined so as to allow automatic switching from one valve to another. Buse selon la revendication 1, caractérisé en ce les caractéristiques sont pour chaque gicleur (30,31) l'angle d'ouverture et le débit.Nozzle according to claim 1, characterized in that characteristics are for each nozzle (30,31) the opening angle and the flow. Buse selon la revendication 1 ou 2, caractérisé en ce qu'au repos le ressort (355) du clapet basse pression (29) sollicite l'organe mobile de fermeture (43) en position fermée du clapet.Nozzle according to claim 1 or 2, characterized in that at rest the spring (355) of the low pressure valve (29) biases the movable closing member (43) in the closed position of the valve. Buse selon l'une des revendications 1 à 3, caractérisé par une chambre de pression (32,33) située entre chaque clapet (28,29) et gicleur (30,31) associé.Nozzle according to one of claims 1 to 3, characterized by a pressure chamber (32,33) located between each valve (28,29) and associated nozzle (30,31). Buse selon l'une des revendications 1 à 4, caractérisé en ce que l'organe mobile (42,43) est une bille.Nozzle according to one of claims 1 to 4, characterized in that the movable member (42,43) is a ball. Système de nettoyage comportant des moyens (7) pour établir une haute pression dans du fluide de nettoyage, des moyens (2) pour établir une basse pression dans ledit fluide de nettoyage , des moyens (16,12,13,17,20) pour délivrer alternativement du fluide de nettoyage haute ou basse pression dans une lance de nettoyage (21) munie d'une buse (22), caractérisé en ce que ladite buse présente les caractéristiques selon l'une quelconque des revendications 1 à 5.Cleaning system comprising means (7) for establishing a high pressure in cleaning fluid, means (2) for establishing a low pressure in said cleaning fluid, means (16,12,13,17,20) for alternately deliver high or low pressure cleaning fluid to a cleaning lance (21) provided with a nozzle (22), characterized in that said nozzle has the characteristics according to any one of claims 1 to 5. Système selon la revendication 6, caractérisé par des moyens mélangeurs (11) pouvant être alimentés par de l'air comprimé, du savon moussant, du fluide de nettoyage haute pression, du fluide de nettoyage basse pression, lesdits moyens mélangeurs étant reliés à la lance de nettoyage (21) et comportant des vannes d'alimentation (16,12,13,17,20) pour chacun des composants susceptibles de l'alimenter.System according to claim 6, characterized by mixing means (11) which can be supplied with compressed air, foaming soap, high pressure cleaning fluid, low pressure cleaning fluid, said mixing means being connected to the lance. cleaning (21) and comprising supply valves (16,12,13,17,20) for each of the components capable of supplying it. Système selon la revendication 6 ou 7, caractérisé par des moyens (10) pour chauffer le fluide basse pression.System according to claim 6 or 7, characterized by means (10) for heating the low pressure fluid. Système selon l'une des revendications 6 à 8, caractérisé par des moyens (4) pour abaisser la dureté de l'eau utilisée comme fluide de nettoyage.System according to one of claims 6 to 8, characterized by means (4) for lowering the hardness of the water used as a cleaning fluid. Système selon l'une des revendications 1 à 9, caractérisé par trois modes de fonctionnement, un mode de lavage dans lequel on alimente les moyens mélangeurs (11) en eau adoucie chaude basse pression, en savon moussant et en air comprimé, un premier mode de rinçage dans lequel on alimente les moyens mélangeurs (11) en eau dure froide et un second mode de rinçage dans lequel on alimente les moyens mélangeurs (11) en eau adoucie froide.System according to one of claims 1 to 9, characterized by three operating modes, a washing mode in which the mixing means (11) are supplied with low pressure hot softened water, foaming soap and compressed air, a first mode rinsing in which the mixing means (11) are supplied with cold hard water and a second rinsing mode in which the mixing means (11) are supplied in cold softened water.
EP01401012A 2001-04-19 2001-04-19 Nozzle and wash system with such a nozzle Withdrawn EP1250959A1 (en)

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ITVE20090016A1 (en) * 2009-02-23 2010-08-24 Davide Fecchio AUTOMATIC DOUBLE MECHANICAL LAUNCH WITH DISPENSE OF THE FOAMY-EFFECT MIXTURE (MOUSSE-SNOW EFFECT)
WO2011020733A2 (en) 2009-08-19 2011-02-24 Unilever Nv A process and a device to clean substrates
CN102529901A (en) * 2012-03-02 2012-07-04 长乐杭辉日用品有限公司 Portable car washing device
US8685174B2 (en) 2009-08-19 2014-04-01 Conopco, Inc. Process for cleaning hard surfaces
US8800089B2 (en) 2009-08-19 2014-08-12 Conopco, Inc. Process for cleaning teeth
CN107150040A (en) * 2017-05-26 2017-09-12 厦门建霖工业有限公司 A kind of two-in-one spray gun of electronics independent control
CN110604895A (en) * 2019-09-24 2019-12-24 九江中船消防设备有限公司 High-low pressure automatic switch-over fire control shower nozzle

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JP2000145986A (en) * 1998-11-11 2000-05-26 Abe Seikoo Kk Switch valve for washer and car washer used thereof
FR2799666A1 (en) * 1999-10-19 2001-04-20 California Kleindienst France Nozzle for car washing system has an inlet channel, which is divided in two channels, one for the high pressure and the other for low pressure

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FR2799666A1 (en) * 1999-10-19 2001-04-20 California Kleindienst France Nozzle for car washing system has an inlet channel, which is divided in two channels, one for the high pressure and the other for low pressure

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITVE20090016A1 (en) * 2009-02-23 2010-08-24 Davide Fecchio AUTOMATIC DOUBLE MECHANICAL LAUNCH WITH DISPENSE OF THE FOAMY-EFFECT MIXTURE (MOUSSE-SNOW EFFECT)
WO2011020733A2 (en) 2009-08-19 2011-02-24 Unilever Nv A process and a device to clean substrates
US8685174B2 (en) 2009-08-19 2014-04-01 Conopco, Inc. Process for cleaning hard surfaces
US8800089B2 (en) 2009-08-19 2014-08-12 Conopco, Inc. Process for cleaning teeth
US8910889B2 (en) 2009-08-19 2014-12-16 Conopco, Inc. Process and a device to clean substrates
CN102529901A (en) * 2012-03-02 2012-07-04 长乐杭辉日用品有限公司 Portable car washing device
CN107150040A (en) * 2017-05-26 2017-09-12 厦门建霖工业有限公司 A kind of two-in-one spray gun of electronics independent control
CN110604895A (en) * 2019-09-24 2019-12-24 九江中船消防设备有限公司 High-low pressure automatic switch-over fire control shower nozzle
CN110604895B (en) * 2019-09-24 2024-02-20 九江中船消防设备有限公司 High-low pressure automatic switching fire control shower nozzle

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