EP0634223A1 - Improved liquid suction and exhaust device and apparatus for dispersing liquid comprising such a device - Google Patents

Improved liquid suction and exhaust device and apparatus for dispersing liquid comprising such a device Download PDF

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Publication number
EP0634223A1
EP0634223A1 EP94401481A EP94401481A EP0634223A1 EP 0634223 A1 EP0634223 A1 EP 0634223A1 EP 94401481 A EP94401481 A EP 94401481A EP 94401481 A EP94401481 A EP 94401481A EP 0634223 A1 EP0634223 A1 EP 0634223A1
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EP
European Patent Office
Prior art keywords
piston
axis
gas
forming
liquid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94401481A
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German (de)
French (fr)
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EP0634223B1 (en
Inventor
Michel Vandromme
Charles Pileur
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.)
Yves Saint Laurent Parfums SA
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Yves Saint Laurent Parfums SA
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Publication date
Application filed by Yves Saint Laurent Parfums SA filed Critical Yves Saint Laurent Parfums SA
Priority to US08/271,665 priority Critical patent/US5518375A/en
Publication of EP0634223A1 publication Critical patent/EP0634223A1/en
Application granted granted Critical
Publication of EP0634223B1 publication Critical patent/EP0634223B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
    • 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
    • B05B12/02—Arrangements for controlling delivery; Arrangements for controlling the spray area for controlling time, or sequence, of delivery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/0012—Apparatus for achieving spraying before discharge from the apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms

Definitions

  • the invention firstly relates to an improved device, of the pump or compressor type, for the suction and delivery of a fluid.
  • Such devices are known and usually include a rod system connected to the motor for driving, in a reciprocating motion, a means forming a piston in a pumping chamber.
  • These connecting rod systems appear in particular bulky and impose a relatively bulky overall shape of the device.
  • One of the problems posed in the present case is therefore to produce a fluid dispensing device which has a minimum bulk, in order to be able to be easily integrated into an apparatus supplied with fluid (without having to increase the dimensions of the latter).
  • the coupling means are movable in a relatively small displacement volume, centered on the axis of the device and allow a substantially coaxial mounting of the main organs of the dispenser.
  • the latter is thus particularly compact.
  • the invention also relates to an apparatus for dispersing or diffusing a liquid thanks to the fluid (gas) supplied by the device which is integrated therein.
  • the device in particular, use of the device as a room fragrance diffuser.
  • a complementary characteristic of the invention provides that the outlet passage of the cartridge which can extend the reservoir on one side, will preferably have a convergent / divergent form, the gas blowing duct and the liquid supply means then advantageously interrupting, in the tank, at a level where the passage in question will be convergent.
  • Another characteristic provides, still for this diffusion efficiency, that the device has a blown secondary gas conduit (in particular air) passing through the support body of the device to open around the outlet passage of the cartridge.
  • a blown secondary gas conduit in particular air
  • the apparatus of the invention having been designed so that the quantity of liquid to be dispersed can be easily modulated, another characteristic provides for the integration of a programmable electronic card for controlling the operation of the dispensing device. gas, by triggering and sequentially interrupting the supply of gas to the liquid diffusion means.
  • the device or means for distributing fluid advantageously consists of a pump or compressor of generally elongated shape (and essentially non-angular) along an axis 200 for pumping various fluids , liquids or gases, especially air.
  • This compressor 9 comprises an electric motor 204, a means forming a piston 206, 252 driven by the motor, in an axial reciprocating movement, inside a body 202 (of axis 200) essentially hollow to delimit, with this body , a pumping chamber 208.
  • This chamber communicates, via an inlet orifice 212, with a source of fluid 25 and with a discharge orifice or evacuation duct 21.
  • Means for selectively closing the passages 212, 21 are also associated with this chamber 208.
  • the general operating principle of the pump 9 is such that an axial movement (without rotation) in the direction of the arrow 216 of the piston means causes an increase in volume of the chamber 208, while the selective closing means maintain the fluid inlet passage 212 open and discharge passage 21 closed.
  • a reverse translation movement (arrow 218), the piston means exerts a pressure on the fluid contained in the chamber 208, while the closing means uncover the conduit 21, for the delivery of the fluid, and keep the orifice closed. 212.
  • the body 202 of the device here made of rigid plastic, comprises several essentially hollow and coaxial parts 224, 226, 228, cooperating with each other by defining a cavity 250.
  • the end piece 224 covers the end of the motor leaving its electrical terminals 232, 234 accessible for supply by a preferably autonomous stabilized source, for example at 6, 9 or 12 volts, such as a battery 27.
  • the motor / piston coupling means in this case comprise a metal head 236 provided with a guide path 238 formed on its peripheral external surface and angularly spaced, at least in places, from a plane normal to the axis 200, as well as a drive member 240 adapted to move along the path 238.
  • the head 236, mounted on the drive shaft 242 of the motor, here has the general shape of a directing cylinder (preferably straight) circular and is rotated (in a given direction) around axis 200.
  • the guide path is continuous, closed on itself and essentially follows an oblique path relative to the axis 200. It advantageously consists of a groove or groove 238 formed on the tubular face of the head and having here the general shape d 'a ring essentially inscribed in a plane which forms with the straight line 200 an acute angle ⁇ greater than about 70 ° and less than 90 °.
  • the drive part 240 can consist of a metal pin provided with a pin 240a capable of being introduced with a slight play in the groove 238, while being able to rotate in a part 206 to which it is linked.
  • the coupling means mechanically balance themselves, which is certainly favorable to the efficiency and reliability of the device and to obtaining high fluid flow rates for low consumption.
  • the piston means here comprises the sliding part 206, of circular cylindrical shape, which is hollowed out, at 246, from one of its ends 206a, the open clearance 246 having a shape suitable for the part 206 to be mounted, relatively tightly , on the head 236 with possibility of sliding.
  • This sliding part also comprises, formed in its wall, an opening 248 for housing the pin 240, substantially normal to the axis 200.
  • this piston 206 moves closely essentially in the tubular element 226 of the body 202.
  • This element 226 which is linked at each of its ends to the elements 224 and 228, has an essentially cylindrical inner wall which goes away flaring towards the end 226b for fitting element 226 into element 228, following a surface concavity curve facing the cavity 250.
  • the pumping chamber 208 it is here defined essentially by the piston-forming means, the terminal portion with an inner flared wall of the part 226, and by the element 228.
  • This element 228 has a general form of cap with a part transverse end. 225 extended by a substantially cylindrical tubular skirt 227 of generator parallel to the axis 200, the part 225 having an inner face 225a curved, with concavity turned towards the chamber 208.
  • the latter comprises a fluid-tight membrane 252 which participates in pumping the fluid. This membrane is kept pressed in its central part (substantially perpendicular to the axis 200) against the transverse end face 254 of the piston 206 with which it moves, by a locking disc 264, screwed.
  • This flexible and deformable membrane is advantageously in a natural, unconstrained state, like a disc, plane or curved, with a diameter greater than the cross section of the piston and, here, also greater than the internal diameter of the parts 226 and 228, to advantageously ensure sealing at the level of the fitting zone of these parts 226 and 228.
  • this membrane will be chosen to be thin, with a thickness for example of between a few tenths of a millimeter and a few millimeters (advantageously less than 2 mm) to reduce the resistive torque of this membrane and apparently make it possible to obtain a high flow rate of fluid for low engine consumption.
  • the membrane will be produced by cutting a disc in a sheet, or a tube, from a rubbery elastic material, such as an elastomer.
  • the membrane is fixed to the block 206, once the latter has been placed in the element 226, then is tensioned suitably on the circular end 226b and is here held there by a clamping ring 262.
  • the periphery of the membrane extends against the external interlocking face of the element 226 and then allows a tight connection with the element 228.
  • the peripheral edge of the membrane could be directly kept linked to the body 202 by being clamped and locked between the external and internal faces of fitting elements 226 and 228.
  • this membrane which is fixed relative to the body at its periphery, in this case constitutes the means for locking in rotation relative to the body of the piston-forming means.
  • at least one longitudinal projection and a complementary axial groove could be provided, formed on the part 206 and the element 226.
  • passages 212 and 21 for circulation of the fluid they are in this case formed in the wall of an end piece 230, here essentially full, of the body 202 and in the wall of the part 225 of the element 228, these parts 228 and 230 being fixedly connected by any known fixing means, with interposition between them of the means for selectively closing the orifices 212 and 21, taken closely as a "sandwich".
  • These selective closing means comprise in this case two one-way valves constituted by the tongues 220 and 222 (for example made of fluid-tight rubber).
  • the block 206 is brought back by the drive member, along arrow 216, in the direction of the motor. This creates a depression in the chamber 208 and allows it to be filled.
  • the piston-forming means performs a round trip per revolution of the head 206.
  • a guide path could be designed with a wavy line.
  • the inventors have found that it is possible to obtain high flow rates of fluid, in particular gas, for low pressures and this with low consumption of the engine.
  • gas flow rates of 1.8 liters / minute (on average between about 1.5 and 2 liters / minute) for a pressure of about 200 to 400 millibar, the engine supply (turning for tests between 5000 and 6000 revolutions / minute) being less than 250 milliamps (around 200 milliamps) in 6 Volts.
  • the device 9 could be used for pumping liquids or gases and could advantageously be integrated into the diffusion device 1 shown in FIG. 1. Still within the scope of the invention and to obtain high fluid pressures (greater than 1 bar), a membrane with a thickness greater than 2 mm may be used (for example up to 4 mm) and in the case of liquids, it might be possible not to provide a waterproofing membrane.
  • the device 1 is used to disperse a liquid, such as for example an eau de toilette 3, contained in a refill cartridge 5 (FIG. 2).
  • a liquid such as for example an eau de toilette 3, contained in a refill cartridge 5 (FIG. 2).
  • the device 1, or sprayer essentially comprises a support body 7 made of plastic, containing, in the lower part, the distributor 9 (here gas, in particular air) and, in the upper part, a distribution barrel 17 internally defining a housing 11 for a removable cartridge 5, so that its discharge opening 13 (FIG. 2) is, once the cartridge in place in its housing, extended by an outlet passage 15 defined by the internal conformation of the barrel 17, an interior chamber 19 ensuring in particular the communication between the outlet 21 of the device 9 and the inlet channel 23 of the cartridge 5.
  • the distributor 9 here gas, in particular air
  • the outlet passage 15 will advantageously have a form of convergent / divergent, with successively a convergent 151, an area of constant section 152 and a divergent output 153.
  • the location 11 for the cartridge 5 and the discharge passage 15 which extends it may be surrounded by a channel 29 connected upstream, via a calibrated tube 31, to the chamber 19 and opening downstream around the divergent 153, so that circulates in this passage 29 a secondary gas (air) promoting the dispersion of the main gas (air) flow carrying the liquid to be "vaporized".
  • the flange 153 will be removable and the barrel 17 will have a fixed base 171, in which will be hollowed out the housing, for example parallelepipedal open on its upper face and having an orifice 111 in its opposite lower face for the passage of the nozzle 23, the upper part 172 of the barrel being removable and can for example be made in two half-shells.
  • plastic cartridge-refill 5 of FIG. 2 it can consist of a tank base 33 containing the liquid 3 and surmounted by an outlet neck 35 having a converging part, then an end part of reduced section neck constant 351 corresponding substantially to the reduced section s of passage 15.
  • the cartridge 5 also contains the diffusion means 37 which will therefore advantageously make it possible to disperse the liquid in a very fine mist, all the more easily since this liquid is volatile.
  • the means 37 comprise a single plastic part fixed at the bottom to the base 33 of the cartridge which it passes through to present the abovementioned connection end piece 23.
  • the part 37 has a gas blowing duct 39, which opens in the upper part, above the level L of the liquid, as well as a second duct 41, of reduced section compared to the first, communicating in the lower part with the liquid and opening, in the upper part, facing the first conduit 39, these conduits 39, 41 being calibrated.
  • the capillary duct 41 may for example have an internal diameter of the order of 0.4 mm, for an upper section of the channel 39 which may be between 0.65 and 1.2 mm approximately.
  • the channel 39 will be interrupted, in the reservoir, at a level close to the narrowest end of the converging part of the neck 35, to blow the gas flow received substantially in the vertical central axis 43 of the cartridge. .
  • FIG. 3 shows a possible electrical diagram of this card which could be a programmable card, making it possible to control the operation of the means 9 by triggering and sequentially interrupting the distribution of the gas to the diffusion means 37.
  • the card 45 will be essentially constituted on the basis of an electronic timer, of which we will first consider the outputs 1 and 5 of the eight switches 47.
  • the output 53 of the inverter 55 is at logic level 1.
  • This initialization (reset) when the under tension is then applied to the two flip-flops 57, 59, as well as to the pulse counter 61 (in this case of the "4040" type).
  • the counter as well as the two flip-flops 57, 59 are therefore at logic level 0.
  • the terminals 63 and 65 respectively of the counters 57 and 59 are at level 1: the light-emitting diode (for example red) 67 is then lit and the distributor means for gas 9, connected to connector 69, does not work, no spraying of fluid then existing.
  • the capacity 71 is discharged.
  • a logic level 0 is therefore applied to the input 73 of the second inverter or trigger 75 whose output 77 is then at level 1.
  • This pin 77 then being at 9 volts, the capacitor 71 is charged by the resistor 79 in series with a potentiometer 81.
  • the capacitor 71 discharges into the resistor 79 and the potentiometer 81. Once its voltage is sufficiently low, the inverter 75 switches again, and so on.
  • the inverter 75 is therefore a clock.
  • the output 1 of the series of switches 47 is assumed to be conducting; after 16 pulses on the clock input of counter 61, its output 99 goes to 1. A rising edge is applied to the clock input 101 of flip-flop 59, its output 103 passing to 1, while its exit 65 is no longer busy. The distributor 9 is then no longer supplied, the lighting changing from green to red (diode 67).
  • Counter 83 still counts.
  • the pulses sent to the input 89 of the flip-flop 57 are not taken into account because the pin 87 (reset) is always at 1.
  • Switch 5 of the series of switches 47 is closed.
  • After the 256th pulse on the clock input of the counter 61 its output 105 goes to 1.
  • the output 116 of the trigger therefore goes to 1.
  • the counter 83 is initialized by pin 119 of flip-flop 57, its outputs being at 0. At the first clock pulse, its output 85 goes to 1, flip-flop 57 taking into account the rising edge. and the cycle begins again.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Nozzles (AREA)

Abstract

This is a device (9) for pumping a fluid, comprising a piston (206) which can move in a metering chamber (208), this piston being driven by a motor, via coupling means which include a rotary head (236) provided with a guide path (238) at least locally oblique with respect to the axis of the device, as well as a driving component (240) which is connected to the piston and which moves along the guide path, causing the reciprocating movement of the piston. The invention also relates to an apparatus for spraying a liquid, comprising the said gas-distributing device. Application to the spraying of an air-freshening fragrance. <IMAGE>

Description

L'invention concerne tout d'abord un dispositif perfectionné, du type pompe ou compresseur, pour l'aspiration et le refoulement d'un fluide.The invention firstly relates to an improved device, of the pump or compressor type, for the suction and delivery of a fluid.

De tels dispositifs sont connus et comportent habituellement un système à bielle raccordé au moteur pour l'entraînement, suivant un mouvement alternatif, d'un moyen formant piston dans une chambre de pompage. Ces systèmes à bielle apparaissent en particulier encombrants et imposent une forme d'ensemble (généralement en "L") relativement volumineuse du dispositif.Such devices are known and usually include a rod system connected to the motor for driving, in a reciprocating motion, a means forming a piston in a pumping chamber. These connecting rod systems appear in particular bulky and impose a relatively bulky overall shape of the device.

L'un des problèmes posés en l'espèce est donc de réaliser un dispositif distributeur de fluide qui présente un encombrement minimum, pour pouvoir être aisément intégré dans un appareil alimenté en fluide (sans avoir à augmenter les dimensions de ce dernier).One of the problems posed in the present case is therefore to produce a fluid dispensing device which has a minimum bulk, in order to be able to be easily integrated into an apparatus supplied with fluid (without having to increase the dimensions of the latter).

Cette exigence de taille ne devant pas se faire au détriment des performances, les inventeurs ont travaillé la fiabilité et l'efficacité. Parmi les autres difficultés à vaincre, il a également fallu tenir compte des débits de fluide à respecter pour un approvisionnement correct des appareils à alimenter, et ce pour une consommation en énergie du dispositif aussi réduite que possible.This size requirement should not be at the expense of performance, the inventors have worked on reliability and efficiency. Among the other difficulties to be overcome, it was also necessary to take account of the flow rates of fluid to be respected for a correct supply of the apparatuses to be supplied, and this for a consumption of energy of the device as reduced as possible.

Face à cela, l'invention propose donc un dispositif pour l'aspiration ou le refoulement d'un fluide, présentant un axe et comprenant :

  • un corps extérieur au moins en partie creux,
  • un moyen formant piston mobile dans ce corps suivant un mouvement axial alternatif pour définir, avec la partie du corps qui le jouxte, une chambre de pompage de volume variable pour l'aspiration ou le refoulement du fluide,
  • des moyens de blocage en rotation par rapport audit corps du moyen formant piston, et
  • des moyens d'accouplement du moyen formant piston à un moteur, ces moyens d'accouplement comprenant :
    • . une tête qui présente sur sa surface extérieure périphérique au moins un chemin de guidage continu, fermé sur lui-même et au moins localement angulairement incliné par rapport à un plan perpendiculaire audit axe du dispositif ; cette tête étant associée au moteur pour être animée d'un mouvement de rotation autour de cet axe, et
    • . au moins une pièce d'entraînement liée au moyen formant piston et propre à se déplacer le long dudit chemin de guidage de la tête, en provoquant le mouvement axial alternatif du moyen formant piston.
Faced with this, the invention therefore proposes a device for the suction or the delivery of a fluid, having an axis and comprising:
  • an external body at least partially hollow,
  • a means forming a piston movable in this body in an alternating axial movement to define, with the part of the body which adjoins it, a pumping chamber of variable volume for suction or delivery of the fluid,
  • means for locking in rotation relative to said body of the piston-forming means, and
  • means for coupling the piston-forming means to a motor, these coupling means comprising:
    • . a head which has on its peripheral external surface at least one continuous guide path, closed on itself and at least locally angularly inclined relative to a plane perpendicular to said axis of the device; this head being associated with the motor to be driven in a rotational movement around this axis, and
    • . at least one drive part linked to the piston means and suitable for moving along said head guide path, causing the reciprocating axial movement of the piston means.

On notera qu'avantageusement, les moyens d'accouplement sont mobiles dans un volume de déplacement relativement réduit, centré sur l'axe du dispositif et permettent un montage sensiblement coaxial des principaux organes du distributeur. Ce dernier est ainsi particulièrement compact.It will be noted that advantageously, the coupling means are movable in a relatively small displacement volume, centered on the axis of the device and allow a substantially coaxial mounting of the main organs of the dispenser. The latter is thus particularly compact.

L'invention se rapporte également à un appareil de dispersion ou diffusion d'un liquide grâce au fluide (gaz) apporté par le dispositif qui y est intégré. Une utilisation de l'appareil en tant que diffuseur de parfum d'ambiance est en particulier visée.The invention also relates to an apparatus for dispersing or diffusing a liquid thanks to the fluid (gas) supplied by the device which is integrated therein. In particular, use of the device as a room fragrance diffuser.

Dans ce cadre, l'invention a permis de définir :

  • un appareil fiable et efficace qui diffuse rapidement le liquide, si nécessaire en quantité variable en fonction des caractéristiques de ce liquide et du volume de l'endroit de diffusion ;
  • un appareil peu onéreux, simple d'emploi et permettant, si nécessaire, de diffuser successivement des liquides différents en évitant toute obligation de rinçage ;
  • une modulation assez facile du rythme de diffusion tout en vaporisant de préférence un "nuage" léger et quasi-invisible à l'oeil.
In this context, the invention has made it possible to define:
  • a reliable and efficient device which rapidly diffuses the liquid, if necessary in a variable quantity depending on the characteristics of this liquid and the volume of the diffusion location;
  • an inexpensive device, simple to use and allowing, if necessary, to successively diffuse different liquids while avoiding any obligation to rinse;
  • a fairly easy modulation of the rhythm of diffusion while preferably spraying a light "cloud" almost invisible to the eye.

Dans ce but, l'invention propose un appareil comprenant :

  • un corps-support,
  • une cartouche-recharge définissant un réservoir pour le liquide à disperser et étant adaptée pour être liée de façon amovible au corps-support,
  • des moyens de diffusion dudit liquide, portés par la cartouche et comprenant un conduit de soufflage de gaz qui communique, d'un côté, avec un passage de sortie de la cartouche vers l'air libre et des moyens d'amenée, sur le chemin du gaz soufflé, de faibles quantités de liquide, et
  • un dispositif de distribution du gaz, disposé dans le corps-support et communiquant avec ledit conduit de soufflage du gaz, ce dispositif étant du type présenté ci-avant.
To this end, the invention provides an apparatus comprising:
  • a support body,
  • a refill cartridge defining a reservoir for the liquid to be dispersed and being adapted to be removably linked to the support body,
  • means for diffusing said liquid, carried by the cartridge and comprising a gas blowing duct which communicates, on one side, with an outlet passage from the cartridge to the open air and supply means, on the way blown gas, small amounts of liquid, and
  • a gas distribution device, arranged in the support body and communicating with said gas blowing duct, this device being of the type presented above.

Pour favoriser cette distribution du liquide, une caractéristique complémentaire de l'invention prévoit que le passage de sortie de la cartouche qui pourra prolonger d'un côté le réservoir, présentera de préférence une forme de convergent/divergent, le conduit de soufflage du gaz et les moyens d'amenée de liquide s'interrompant alors avantageusement, dans le réservoir, à un niveau où le passage en question sera convergent.To promote this distribution of the liquid, a complementary characteristic of the invention provides that the outlet passage of the cartridge which can extend the reservoir on one side, will preferably have a convergent / divergent form, the gas blowing duct and the liquid supply means then advantageously interrupting, in the tank, at a level where the passage in question will be convergent.

Une autre caractéristique prévoit, toujours pour cette efficacité de diffusion, que l'appareil présente un conduit de gaz secondaire soufflé (notamment air) cheminant dans le corps-support de l'appareil pour déboucher autour du passage de sortie de la cartouche.Another characteristic provides, still for this diffusion efficiency, that the device has a blown secondary gas conduit (in particular air) passing through the support body of the device to open around the outlet passage of the cartridge.

L'appareil de l'invention ayant été conçu pour qu'on puisse facilement moduler la quantité de liquide à disperser, une autre caractéristique prévoit l'intégration d'une carte électronique programmable pour commander le fonctionnement du dispositif de distribution du gaz, en déclenchant et en interrompant séquentiellement l'alimentation en gaz des moyens de diffusion de liquide.The apparatus of the invention having been designed so that the quantity of liquid to be dispersed can be easily modulated, another characteristic provides for the integration of a programmable electronic card for controlling the operation of the dispensing device. gas, by triggering and sequentially interrupting the supply of gas to the liquid diffusion means.

D'autres caractéristiques et avantages de l'invention apparaîtront encore de la description qui va suivre, faite en référence aux dessins annexés donnés uniquement à titre d'exemples non limitatif, et dans lesquels :

  • la figure 1 est une vue schématique intérieure de l'appareil selon l'invention, avec ses éléments constitutifs essentiels, dont le dispositif distributeur de fluide,
  • la figure 2 est une vue intérieure d'une cartouche adaptable sur l'appareil de la figure 1,
  • la figure 3 est une vue simplifiée du schéma électrique de la carte programmable qui peut être prévue sur l'appareil de la figure 1,
  • la figure 4 est une vue schématique éclatée en perspective du dispositif de la figure 1,
  • la figure 5 est une autre vue schématique éclatée des principaux organes du distributeur de la figure 4,
  • et, la figure 6 montre une vue partielle et agrandie, en partie en coupe, du distributeur des figures 4 et 5.
Other characteristics and advantages of the invention will become apparent from the description which follows, given with reference to the appended drawings given solely by way of nonlimiting examples, and in which:
  • FIG. 1 is a diagrammatic interior view of the apparatus according to the invention, with its essential constituent elements, including the fluid distributor device,
  • FIG. 2 is an interior view of a cartridge adaptable to the device of FIG. 1,
  • FIG. 3 is a simplified view of the electrical diagram of the programmable card which can be provided on the device of FIG. 1,
  • FIG. 4 is a schematic exploded perspective view of the device of FIG. 1,
  • FIG. 5 is another exploded schematic view of the main organs of the dispenser of FIG. 4,
  • and, FIG. 6 shows a partial and enlarged view, partly in section, of the dispenser of FIGS. 4 and 5.

D'après les figures 4 à 6, on voit que le dispositif ou moyen distributeur de fluide, référencé 9, consiste avantageusement en une pompe ou compresseur de forme générale allongée (et essentiellement non anguleuse) suivant un axe 200 pour le pompage de fluides divers, liquides ou gazeux, notamment l'air. Ce compresseur 9 comprend un moteur électrique 204, un moyen formant piston 206, 252 entraîné par le moteur, suivant un mouvement alternatif axial, à l'intérieur d'un corps 202 (d'axe 200) essentiellement creux pour délimiter, avec ce corps, une chambre de pompage 208. Cette chambre communique, via un orifice d'admission 212, avec une source de fluide 25 et avec un orifice de refoulement ou conduit d'évacuation 21. Des moyens de fermeture sélective des passages 212, 21 sont également associés à cette chambre 208.From FIGS. 4 to 6, it can be seen that the device or means for distributing fluid, referenced 9, advantageously consists of a pump or compressor of generally elongated shape (and essentially non-angular) along an axis 200 for pumping various fluids , liquids or gases, especially air. This compressor 9 comprises an electric motor 204, a means forming a piston 206, 252 driven by the motor, in an axial reciprocating movement, inside a body 202 (of axis 200) essentially hollow to delimit, with this body , a pumping chamber 208. This chamber communicates, via an inlet orifice 212, with a source of fluid 25 and with a discharge orifice or evacuation duct 21. Means for selectively closing the passages 212, 21 are also associated with this chamber 208.

Le principe général de fonctionnement de la pompe 9 est tel qu'un déplacement axial (sans rotation) dans le sens de la flèche 216 du moyen formant piston provoque une augmentation de volume de la chambre 208, alors que les moyens de fermeture sélective maintiennent le passage d'entrée du fluide 212 ouvert et le passage de refoulement 21 fermé. Dans un mouvement de translation inverse (flèche 218), le moyen formant piston exerce une pression sur le fluide contenu dans la chambre 208, tandis que les moyens de fermeture découvrent le conduit 21, pour le refoulement du fluide, et maintiennent obturé l'orifice 212.The general operating principle of the pump 9 is such that an axial movement (without rotation) in the direction of the arrow 216 of the piston means causes an increase in volume of the chamber 208, while the selective closing means maintain the fluid inlet passage 212 open and discharge passage 21 closed. In a reverse translation movement (arrow 218), the piston means exerts a pressure on the fluid contained in the chamber 208, while the closing means uncover the conduit 21, for the delivery of the fluid, and keep the orifice closed. 212.

Dans la version illustrée, le corps 202 du dispositif, ici en matière plastique rigide, comprend plusieurs pièces essentiellement creuses et coaxiales 224, 226, 228, coopérant entre elles en définissant une cavité 250. Notamment, la pièce terminale 224 recouvre l'extrémité du moteur en laissant accessibles ses bornes électriques 232, 234 pour une alimentation par une source de préférence autonome stabilisée, par exemple à 6, 9 ou 12 volts, telle qu'une pile 27.In the illustrated version, the body 202 of the device, here made of rigid plastic, comprises several essentially hollow and coaxial parts 224, 226, 228, cooperating with each other by defining a cavity 250. In particular, the end piece 224 covers the end of the motor leaving its electrical terminals 232, 234 accessible for supply by a preferably autonomous stabilized source, for example at 6, 9 or 12 volts, such as a battery 27.

Les moyens d'accouplement moteur/moyen formant piston comprennent en l'espèce une tête métallique 236 pourvue d'un chemin de guidage 238 formé sur sa surface externe périphérique et angulairement écarté, au moins par endroits, d'un plan normal à l'axe 200, ainsi qu'un organe d'entraînement 240 propre à se déplacer le long du chemin 238.The motor / piston coupling means in this case comprise a metal head 236 provided with a guide path 238 formed on its peripheral external surface and angularly spaced, at least in places, from a plane normal to the axis 200, as well as a drive member 240 adapted to move along the path 238.

La tête 236, montée sur l'arbre d'entraînement 242 du moteur, présente ici la forme générale d'un cylindre (de préférence droit) à directrice circulaire et est animée d'un mouvement de rotation (dans un sens donné) autour de l'axe 200.The head 236, mounted on the drive shaft 242 of the motor, here has the general shape of a directing cylinder (preferably straight) circular and is rotated (in a given direction) around axis 200.

Le chemin de guidage est continu, fermé sur lui-même et suit essentiellement un tracé oblique par rapport à l'axe 200. Il consiste avantageusement en une rainure ou saignée 238 formée sur la face tubulaire de la tête et ayant ici la forme générale d'un anneau essentiellement inscrit dans un plan qui forme avec la droite 200 un angle aigu α supérieur à environ 70° et inférieur à 90°.The guide path is continuous, closed on itself and essentially follows an oblique path relative to the axis 200. It advantageously consists of a groove or groove 238 formed on the tubular face of the head and having here the general shape d 'a ring essentially inscribed in a plane which forms with the straight line 200 an acute angle α greater than about 70 ° and less than 90 °.

Quant à la pièce d'entraînement 240, elle peut consister en une goupille métallique pourvue d'un téton 240a propre à s'introduire avec un faible jeu dans la saignée 238, tout en pouvant tourner dans une pièce 206 à laquelle elle est liée.As for the drive part 240, it can consist of a metal pin provided with a pin 240a capable of being introduced with a slight play in the groove 238, while being able to rotate in a part 206 to which it is linked.

On notera qu'avantageusement les moyens d'accouplement s'équilibrent mécaniquement d'eux-mêmes, ce qui est certainement favorable à l'efficacité et la fiabilité du dispositif et à l'obtention de débits de fluide élevés pour une faible consommation.It will be noted that advantageously the coupling means mechanically balance themselves, which is certainly favorable to the efficiency and reliability of the device and to obtaining high fluid flow rates for low consumption.

Le moyen formant piston comprend ici la pièce coulissante 206, de forme cylindrique circulaire, qui est évidée, en 246, depuis l'une de ses extrémités 206a, le dégagement ouvert 246 ayant une forme adaptée pour que la pièce 206 soit montée, relativement étroitement, sur la tête 236 avec possibilité de coulissement. Cette pièce coulissante comprend également, ménagée dans sa paroi, une ouverture 248 de logement du pion 240, sensiblement normal à l'axe 200.The piston means here comprises the sliding part 206, of circular cylindrical shape, which is hollowed out, at 246, from one of its ends 206a, the open clearance 246 having a shape suitable for the part 206 to be mounted, relatively tightly , on the head 236 with possibility of sliding. This sliding part also comprises, formed in its wall, an opening 248 for housing the pin 240, substantially normal to the axis 200.

Tel qu'illustré, ce piston 206 se déplace étroitement essentiellement dans l'élément tubulaire 226 du corps 202. Cet élément 226 qui est lié à chacune de ses extrémités aux éléments 224 et 228, présente une paroi intérieure essentiellement cylindrique qui va en s'évasant vers l'extrémité 226b d'emboîtement de l'élément 226 dans l'élément 228, en suivant une surface courbe à concavité tournée vers la cavité 250.As illustrated, this piston 206 moves closely essentially in the tubular element 226 of the body 202. This element 226 which is linked at each of its ends to the elements 224 and 228, has an essentially cylindrical inner wall which goes away flaring towards the end 226b for fitting element 226 into element 228, following a surface concavity curve facing the cavity 250.

Quant à la chambre de pompage 208, elle est ici définie essentiellement par le moyen formant piston, la portion terminale à paroi intérieure évasée de la pièce 226, et par l'élément 228. Cet élément 228 présente une forme générale de capuchon avec une partie transversale d'extrémité.225 prolongée par une jupe tubulaire 227 sensiblement cylindrique de génératrice parallèle à l'axe 200, la partie 225 présentant une face intérieure 225a incurvée, à concavité tournée vers la chambre 208. Pour l'étanchéité de cette chambre 208, du côté du moyen formant piston, ce dernier comprend une membrane étanche au fluide 252 qui participe au pompage du fluide. Cette membrane est maintenue plaquée dans sa partie centrale (sensiblement perpendiculairement à l'axe 200) contre la face transversale d'extrémité 254 du piston 206 avec lequel elle se déplace, par un disque de blocage 264, vissé.As for the pumping chamber 208, it is here defined essentially by the piston-forming means, the terminal portion with an inner flared wall of the part 226, and by the element 228. This element 228 has a general form of cap with a part transverse end. 225 extended by a substantially cylindrical tubular skirt 227 of generator parallel to the axis 200, the part 225 having an inner face 225a curved, with concavity turned towards the chamber 208. For the sealing of this chamber 208, on the side of the piston-forming means, the latter comprises a fluid-tight membrane 252 which participates in pumping the fluid. This membrane is kept pressed in its central part (substantially perpendicular to the axis 200) against the transverse end face 254 of the piston 206 with which it moves, by a locking disc 264, screwed.

Cette membrane souple et déformable se présente avantageusement, dans un état naturel non contraint, comme un disque, plan ou courbe, de diamètre supérieur à la section du piston et, ici, également supérieur au diamètre intérieur des pièces 226 et 228, pour assurer avantageusement l'étanchéité au niveau de la zone d'emboîtement de ces pièces 226 et 228.This flexible and deformable membrane is advantageously in a natural, unconstrained state, like a disc, plane or curved, with a diameter greater than the cross section of the piston and, here, also greater than the internal diameter of the parts 226 and 228, to advantageously ensure sealing at the level of the fitting zone of these parts 226 and 228.

De préférence, cette membrane sera choisie mince, avec une épaisseur par exemple comprise entre quelques dixièmes de millimètres et quelques millimètres (avantageusement inférieure à 2 mm) pour réduire le couple résistant de cette membrane et permettre apparemment d'obtenir un débit de fluide important pour une faible consommation du moteur. De manière préférée, on réalisera la membrane en découpant un disque dans une feuille, ou un tube, en une matière élastique caoutchouteuse, telle qu'en élastomère.Preferably, this membrane will be chosen to be thin, with a thickness for example of between a few tenths of a millimeter and a few millimeters (advantageously less than 2 mm) to reduce the resistive torque of this membrane and apparently make it possible to obtain a high flow rate of fluid for low engine consumption. Preferably, the membrane will be produced by cutting a disc in a sheet, or a tube, from a rubbery elastic material, such as an elastomer.

Pour créer l'étanchéité, la membrane est fixée au bloc 206, une fois ce dernier mis en place dans l'élément 226, puis est tendue convenablement sur l'extrémité circulaire 226b et y est ici maintenue par une bague de serrage 262. Le pourtour de la membrane s'étend contre la face externe d'emboîtement de l'élément 226 et permet alors une liaison étanche avec l'élément 228. En variante, le bord périphérique de la membrane pourraît être directement maintenu lié au corps 202 en étant serré et bloqué entre les faces externe et interne d'emboîtement des éléments 226 et 228.To create the seal, the membrane is fixed to the block 206, once the latter has been placed in the element 226, then is tensioned suitably on the circular end 226b and is here held there by a clamping ring 262. The periphery of the membrane extends against the external interlocking face of the element 226 and then allows a tight connection with the element 228. As a variant, the peripheral edge of the membrane could be directly kept linked to the body 202 by being clamped and locked between the external and internal faces of fitting elements 226 and 228.

On notera que cette membrane, qui est fixe par rapport au corps au niveau de sa périphérie, constitue en l'espèce les moyens de blocage en rotation par rapport au corps du moyen formant piston. En variante, on pourrait prévoir au moins une saillie longitudinale et une gorge axiale complémentaire, formées sur la pièce 206 et l'élément 226.Note that this membrane, which is fixed relative to the body at its periphery, in this case constitutes the means for locking in rotation relative to the body of the piston-forming means. As a variant, at least one longitudinal projection and a complementary axial groove could be provided, formed on the part 206 and the element 226.

En ce qui concerne les passages 212 et 21 de circulation du fluide, ils sont en l'espèce ménagés dans la paroi d'une pièce terminale 230, ici essentiellement pleine, du corps 202 et dans la paroi de la partie 225 de l'élément 228, ces pièces 228 et 230 étant liées fixement par tous moyens de fixation connus, avec interposition entre elles des moyens de fermeture sélective des orifices 212 et 21, pris étroitement en "sandwich". Ces moyens de fermeture sélective comprennent en l'espèce deux clapets unidirectionnels constitués par les languettes 220 et 222 (par exemple en caoutchouc étanche au fluide).With regard to the passages 212 and 21 for circulation of the fluid, they are in this case formed in the wall of an end piece 230, here essentially full, of the body 202 and in the wall of the part 225 of the element 228, these parts 228 and 230 being fixedly connected by any known fixing means, with interposition between them of the means for selectively closing the orifices 212 and 21, taken closely as a "sandwich". These selective closing means comprise in this case two one-way valves constituted by the tongues 220 and 222 (for example made of fluid-tight rubber).

Lorsque le distributeur 9 sera disposé dans l'appareil 1 décrit ci-après (figure 1), il sera pratique qu'il souffle de l'air vers un canal 23 de l'appareil, il sera alors avantageux de le raccorder à l'atmosphère par son passage 212 communiquant avec la prise d'air extérieure 25.When the distributor 9 is placed in the device 1 described below (FIG. 1), it will be practical for it to blow air towards a channel 23 of the device, it will then be advantageous to connect it to the atmosphere through its passage 212 communicating with the external air intake 25.

La pompe 9 des figures 4 à 6 fonctionne comme suit : la pièce coulissante 206 est en une position reculée vers le moteur, la chambre 208 étant supposée pleine (volume maximal de fluide). Puisque la pièce coulissante est maintenue fixe en rotation, la rotation de la tête 236 (entraînée par le moteur) provoque le déplacement le long de son chemin de guidage 238 de l'organe 240 (qui va être animé d'un mouvement de translation suivant l'axe 200), lequel entraîne alors la pièce 206 dans un mouvement axial dans le sens de la flèche 218. Le fluide contenu dans la chambre 208 est alors forcé vers l'intérieur du passage 21 pour finalement déboucher dans la chambre intérieure 19 de l'appareil 1 décrit ci-après (figure 1). En fin de course de la pièce 206 (volume minimal de la chambre 208) et puisque la tête continue à tourner, le bloc 206 est ramené par l'organe d'entraînement, suivant la flèche 216, en direction du moteur. Cela crée une dépression dans la chambre 208 et permet son remplissage.Pump 9 in Figures 4 to 6 operates as follows: the sliding part 206 is in a retracted position towards the motor, the chamber 208 being assumed to be full (maximum volume of fluid). Since the sliding part is kept fixed in rotation, the rotation of the head 236 (driven by the motor) causes the displacement along its guide path 238 of the member 240 (which will be animated by a translational movement according to the axis 200), which then drives the part 206 in an axial movement in the direction of the arrow 218. The fluid contained in the chamber 208 is then forced into the interior of the passage 21 to finally open into the interior chamber 19 of the device 1 described below (Figure 1). At the end of travel of the part 206 (minimum volume of the chamber 208) and since the head continues to rotate, the block 206 is brought back by the drive member, along arrow 216, in the direction of the motor. This creates a depression in the chamber 208 and allows it to be filled.

On notera que compte tenu de la forme annulaire retenue ici du chemin de guidage, le moyen formant piston effectue un aller-retour par tour de la tête 206. En variante, on pourrait concevoir un chemin de guidage avec un tracé ondulé.It will be noted that, taking into account the annular shape retained here of the guide path, the piston-forming means performs a round trip per revolution of the head 206. As a variant, a guide path could be designed with a wavy line.

Les inventeurs ont constaté qu'il était possible d'obtenir des débits élévés de fluide, en particulier de gaz, pour de faibles pressions et ce avec une faible consommation du moteur. Ainsi, il a été possible d'atteindre des débits de gaz de 1,8 litre/minute (en moyenne entre environ 1,5 et 2 litres/minute) pour une pression d'environ 200 à 400 millibar, l'alimentation du moteur (tournant pour les essais entre 5000 et 6000 tours/minute) étant inférieure à 250 milliampères (autour de 200 milliampères) en 6 Volts.The inventors have found that it is possible to obtain high flow rates of fluid, in particular gas, for low pressures and this with low consumption of the engine. Thus, it was possible to reach gas flow rates of 1.8 liters / minute (on average between about 1.5 and 2 liters / minute) for a pressure of about 200 to 400 millibar, the engine supply (turning for tests between 5000 and 6000 revolutions / minute) being less than 250 milliamps (around 200 milliamps) in 6 Volts.

Le dispositif 9 pourra être utilisé pour le pompage de liquides ou de gaz et pourra avantageusement être intégré dans l'appareil 1 de diffusion représenté figure 1. Toujours dans le cadre de l'invention et pour obtenir des pressions élevées du fluide (supérieures à 1 bar), on pourra utiliser une membrane d'une épaisseur supérieure à 2 mm (par exemple jusqu'à 4 mm) et dans le cas de liquides, on pourrait éventuellement ne pas prévoir de membrane d'étanchéité.The device 9 could be used for pumping liquids or gases and could advantageously be integrated into the diffusion device 1 shown in FIG. 1. Still within the scope of the invention and to obtain high fluid pressures (greater than 1 bar), a membrane with a thickness greater than 2 mm may be used ( for example up to 4 mm) and in the case of liquids, it might be possible not to provide a waterproofing membrane.

L'appareil 1 est utilisé pour disperser un liquide, tel par exemple qu'une eau de toilette 3, contenu dans une cartouche-recharge 5 (figure 2).The device 1 is used to disperse a liquid, such as for example an eau de toilette 3, contained in a refill cartridge 5 (FIG. 2).

L'appareil 1, ou pulvérisateur, comprend essentiellement un corps-support 7 en plastique, renfermant, en partie inférieure, le distributeur 9 (ici de gaz, en particulier air) et, en partie supérieure, un fût de distribution 17 définissant intérieurement un logement 11 pour une cartouche amovible 5, de telle manière que son ouverture d'évacuation 13 (figure 2) soit, une fois la cartouche en place dans son logement, prolongée par un passage de sortie 15 défini par la conformation intérieure du fût 17, une chambre intérieure 19 assurant en particulier la communication entre la sortie 21 du dispositif 9 et le canal 23 d'entrée de la cartouche 5.The device 1, or sprayer, essentially comprises a support body 7 made of plastic, containing, in the lower part, the distributor 9 (here gas, in particular air) and, in the upper part, a distribution barrel 17 internally defining a housing 11 for a removable cartridge 5, so that its discharge opening 13 (FIG. 2) is, once the cartridge in place in its housing, extended by an outlet passage 15 defined by the internal conformation of the barrel 17, an interior chamber 19 ensuring in particular the communication between the outlet 21 of the device 9 and the inlet channel 23 of the cartridge 5.

Sur la figure 1, on remarquera que pour améliorer la diffusion du liquide sous l'effet du flux de gaz généré par le compresseur 9, le passage de sortie 15 présentera avantageusement une forme de convergent/divergent, avec successivement un convergent 15₁, une zone de section constante 15₂ et une sortie divergente 15₃.In FIG. 1, it will be noted that, in order to improve the diffusion of the liquid under the effect of the gas flow generated by the compressor 9, the outlet passage 15 will advantageously have a form of convergent / divergent, with successively a convergent 15₁, an area of constant section 15₂ and a divergent output 15₃.

Pour favoriser encore la dispersion pulvérisée du liquide, l'emplacement 11 pour la cartouche 5 et le passage d'évacuation 15 qui le prolonge, pourront être entourés par un canal 29 raccordé en amont, via un tube calibré 31, à la chambre 19 et débouchant en aval autour du divergent 15₃, de telle manière que circule dans ce passage 29 un gaz (air) secondaire favorisant la dispersion du flux de gaz (air) principal porteur du liquide à "vaporiser".To further favor the sprayed dispersion of the liquid, the location 11 for the cartridge 5 and the discharge passage 15 which extends it, may be surrounded by a channel 29 connected upstream, via a calibrated tube 31, to the chamber 19 and opening downstream around the divergent 15₃, so that circulates in this passage 29 a secondary gas (air) promoting the dispersion of the main gas (air) flow carrying the liquid to be "vaporized".

Pour la mise en place de la cartouche 5, la collerette 15₃ sera amovible et le fût 17 comportera une base fixe 17₁, dans laquelle sera creusé le logement, par exemple parallélépipédique ouvert sur sa face supérieure et présentant un orifice 11₁ dans sa face inférieure opposée pour le passage de l'embout 23, la partie supérieure 17₂ du fût étant amovible et pouvant par exemple être réalisée en deux demi-coques.For the installation of the cartridge 5, the flange 15₃ will be removable and the barrel 17 will have a fixed base 17₁, in which will be hollowed out the housing, for example parallelepipedal open on its upper face and having an orifice 11₁ in its opposite lower face for the passage of the nozzle 23, the upper part 17₂ of the barrel being removable and can for example be made in two half-shells.

Quant à la cartouche-recharge 5 en plastique de la figure 2, elle peut être constituée d'une base-réservoir 33 renfermant le liquide 3 et surmontée d'un goulot de sortie 35 présentant une partie convergente, puis une partie terminale de section réduite constante de col 35₁ correspondant sensiblement à la section réduite s du passage 15.As for the plastic cartridge-refill 5 of FIG. 2, it can consist of a tank base 33 containing the liquid 3 and surmounted by an outlet neck 35 having a converging part, then an end part of reduced section neck constant 35₁ corresponding substantially to the reduced section s of passage 15.

De préférence, la cartouche 5 renferme en outre les moyens de diffusion 37 qui vont permettent donc avantageusement de disperser le liquide en un très fin brouillard cela d'autant plus facilement que ce liquide est volatil. En l'espèce, les moyens 37 comprennent une pièce plastique unique fixée en partie inférieure à la base 33 de la cartouche qu'elle traverse pour présenter l'embout de raccordement précité 23.Preferably, the cartridge 5 also contains the diffusion means 37 which will therefore advantageously make it possible to disperse the liquid in a very fine mist, all the more easily since this liquid is volatile. In this case, the means 37 comprise a single plastic part fixed at the bottom to the base 33 of the cartridge which it passes through to present the abovementioned connection end piece 23.

Intérieurement, la pièce 37 présente un conduit de soufflage du gaz 39, qui débouche en partie supérieure, au-dessus du niveau L du liquide, ainsi qu'un second conduit 41, de section réduite par rapport au premier, communiquant en partie inférieure avec le liquide et débouchant, en partie supérieure, en regard du premier conduit 39, ces conduits 39, 41 étant calibrés.Internally, the part 37 has a gas blowing duct 39, which opens in the upper part, above the level L of the liquid, as well as a second duct 41, of reduced section compared to the first, communicating in the lower part with the liquid and opening, in the upper part, facing the first conduit 39, these conduits 39, 41 being calibrated.

Sur l'illustration, le conduit capillaire 41 pourra par exemple présenter un diamètre intérieur de l'ordre de 0,4 mm, pour une section supérieure du canal 39 qui pourra être comprise entre 0,65 et 1,2 mm environ.In the illustration, the capillary duct 41 may for example have an internal diameter of the order of 0.4 mm, for an upper section of the channel 39 which may be between 0.65 and 1.2 mm approximately.

Avantageusement, le canal 39 s'interrompra, dans le réservoir, à un niveau proche de l'extrémité la plus étroite de la partie convergente du goulot 35, pour souffler le flux de gaz reçu sensiblement dans l'axe central vertical 43 de la cartouche.Advantageously, the channel 39 will be interrupted, in the reservoir, at a level close to the narrowest end of the converging part of the neck 35, to blow the gas flow received substantially in the vertical central axis 43 of the cartridge. .

Pour optimiser le fonctionnement de l'appareil, il a également été envisagé d'ajoindre, à l'intérieur du corps 7, une carte électronique programmable 45 pour la commande du moyen de distribution de gaz 9.To optimize the operation of the device, it has also been envisaged to add, inside the body 7, a programmable electronic card 45 for controlling the gas distribution means 9.

Sur la figure 3, on a représenté un possible schéma électrique de cette carte qui pourra être une carte programmable, permettant de commander le fonctionnement des moyens 9 en déclenchant et en interrompant séquentiellement la distribution du gaz vers les moyens de diffusion 37. En d'autres termes, la carte 45 sera essentiellement constituée sur la base d'un temporisateur électronique, dont nous allons considérer tout d'abord les sorties 1 et 5 des huit commutateurs 47.FIG. 3 shows a possible electrical diagram of this card which could be a programmable card, making it possible to control the operation of the means 9 by triggering and sequentially interrupting the distribution of the gas to the diffusion means 37. By d ' in other words, the card 45 will be essentially constituted on the basis of an electronic timer, of which we will first consider the outputs 1 and 5 of the eight switches 47.

A la mise sous tension de la carte via la source 49 (6 volts), tant que la capacité 51 n'est pas chargée, la sortie 53 de l'inverseur 55 est au niveau logique 1. Cette initialisation (reset) à la mise sous tension est appliquée ensuite aux deux bascules bistables 57, 59, ainsi qu'au compteur d'impulsions 61 (en l'espèce de type "4040"). Le compteur ainsi que les deux bascules 57, 59 sont donc au niveau logique 0. Les bornes 63 et 65 respectivement des compteurs 57 et 59 sont au niveau 1 : la diode électroluminescente (par exemple rouge) 67 est alors allumée et le moyen distributeur de gaz 9, raccordé au connecteur 69, ne fonctionne pas, aucune pulvérisation de fluide n'existant alors.When the card is powered up via the source 49 (6 volts), as long as the capacity 51 is not charged, the output 53 of the inverter 55 is at logic level 1. This initialization (reset) when the under tension is then applied to the two flip-flops 57, 59, as well as to the pulse counter 61 (in this case of the "4040" type). The counter as well as the two flip-flops 57, 59 are therefore at logic level 0. The terminals 63 and 65 respectively of the counters 57 and 59 are at level 1: the light-emitting diode (for example red) 67 is then lit and the distributor means for gas 9, connected to connector 69, does not work, no spraying of fluid then existing.

Par ailleurs, la capacité 71 est déchargée. On applique donc un niveau logique 0 à l'entrée 73 du second inverseur ou trigger 75 dont la sortie 77 est alors au niveau 1. Cette broche 77 étant alors à 9 volts, on charge la capacité 71 par la résistance 79 en série avec un potentiomètre 81. Quand la tension du condensateur 71 devient supérieure à la tension de basculement de l'inverseur 75, ce dernier bascule et sa sortie 77 passe à 0 volt. Le condensateur 71 se décharge dans la résistance 79 et le potentiomètre 81. Une fois sa tension suffisamment faible, l'inverseur 75 bascule à nouveau, et ainsi de suite. L'inverseur 75 est donc une horloge.Furthermore, the capacity 71 is discharged. A logic level 0 is therefore applied to the input 73 of the second inverter or trigger 75 whose output 77 is then at level 1. This pin 77 then being at 9 volts, the capacitor 71 is charged by the resistor 79 in series with a potentiometer 81. When the voltage of the capacitor 71 becomes greater than the switching voltage of the inverter 75, this last flip-flop and its output 77 goes to 0 volts. The capacitor 71 discharges into the resistor 79 and the potentiometer 81. Once its voltage is sufficiently low, the inverter 75 switches again, and so on. The inverter 75 is therefore a clock.

Initialement, toutes les sorties du compteur 61 sont à 0. Au premier coup d'horloge appliqué sur l'entrée 83 du compteur, celui-ci va compter : sa première sortie 85 va donc passer au niveau 1. La broche 87 de la bascule 57 est alors à 0, ladite bascule étant donc prête à mémoriser. On applique donc le front montant venant de la sortie 85 à l'entrée 89 de la bascule 57. La bascule enregistre et sa sortie 91 passe à 1, tandis que sa sortie 63 passe à 0. La diode lumineuse 67 s'éteint, tandis que l'autre diode (par exemple verte) 93 s'allume. Ainsi on applique 9 volts en entrée de la résistance 95 et le transistor 97 devient passant, le moyen distributeur de gaz 9 entrant alors en fonctionnement.Initially, all the outputs of the counter 61 are at 0. At the first clock applied to the input 83 of the counter, the latter will count: its first output 85 will therefore go to level 1. The pin 87 of the rocker 57 is then at 0, said flip-flop being therefore ready to store. The rising edge coming from the output 85 is therefore applied to the input 89 of the flip-flop 57. The flip-flop registers and its output 91 goes to 1, while its output 63 goes to 0. The light diode 67 goes out, while the other diode (for example green) 93 lights up. Thus, 9 volts are applied at the input of the resistor 95 and the transistor 97 turns on, the gas distributor means 9 then entering into operation.

La sortie 1 de la série de commutateurs 47 est supposée passante ; au bout de 16 impulsions sur l'entrée d'horloge du compteur 61, sa sortie 99 passe à 1. On applique un front montant sur l'entrée d'horloge 101 de la bascule 59, sa sortie 103 passant à 1, tandis que sa sortie 65 n'est plus passante. Le distributeur 9 n'est alors plus alimenté, l'éclairage passant du vert au rouge (diode 67).The output 1 of the series of switches 47 is assumed to be conducting; after 16 pulses on the clock input of counter 61, its output 99 goes to 1. A rising edge is applied to the clock input 101 of flip-flop 59, its output 103 passing to 1, while its exit 65 is no longer busy. The distributor 9 is then no longer supplied, the lighting changing from green to red (diode 67).

Le compteur 83 compte toujours. Les impulsions envoyées sur l'entrée 89 de la bascule 57 ne sont pas prises en compte car la broche 87 (reset) est toujours à 1. Le commutateur 5 de la série de commutateurs 47 est fermé. Au bout de la 256ème impulsion sur l'entrée d'horloge du compteur 61, sa sortie 105 passe à 1. On envoie donc 9 volts en entrée de la résistance 107, et le transistor 109 devient passant, de telle sorte que la broche d'entrée 111 du trigger 113 passe à 0, le temps de la temporisation assurée par le circuit résistance 115 - capacité 117. La sortie 116 du trigger passe donc à 1. On initialise alors la bascule 59, ainsi que le compteur 61 dont la sortie 103 passe donc à 0. On applique par conséquent un niveau logique 1 ou 0 à la broche 87, enlevant l'initialisation forcée de cette bascule qui peut donc reprendre en compte les impulsions du compteur 83 venant de sa broche 85.Counter 83 still counts. The pulses sent to the input 89 of the flip-flop 57 are not taken into account because the pin 87 (reset) is always at 1. Switch 5 of the series of switches 47 is closed. After the 256th pulse on the clock input of the counter 61, its output 105 goes to 1. We therefore send 9 volts to the input of the resistor 107, and the transistor 109 turns on, so that the input pin 111 of the trigger 113 goes to 0, the time delay provided by the resistance 115 - capacitance 117. The output 116 of the trigger therefore goes to 1. We then set the flip-flop 59, as well as the counter 61 whose output 103 therefore goes to 0. Consequently, a logic level 1 or 0 is applied to pin 87, removing the forced initialization of this flip-flop which can therefore take into account the pulses of the counter 83 coming from its pin 85.

De cette manière, le compteur 83 est initialisé par la broche 119 de la bascule 57, ses sorties étant à 0. A la première impulsion d'horloge, sa sortie 85 passe à 1, la bascule 57 prenant en compte le front montant ... et le cyle recommence.In this way, the counter 83 is initialized by pin 119 of flip-flop 57, its outputs being at 0. At the first clock pulse, its output 85 goes to 1, flip-flop 57 taking into account the rising edge. and the cycle begins again.

Pour régler le temps des durées d'impulsions, il suffit de sélectionner une des sorties 99, 121, 123, 125 du compteur 61 à l'aide des commutateurs 47 et, pour régler le temps entre deux impulsions, on peut sélectionner une des sorties 105, 127, 129, 131 de ce même compteur, également à l'aide des commutateurs 47. On notera que la présence des portes logiques OU 133, 135 et 137, dont les sorties sont respectivement raccordées à la borne 87, à la borne 139 du compteur et à la borne 141 de la seconde bascule 59, permettent de réinitialiser (reset) les bascules et le compteur en cas de mise sous tension ou en fin de cycle, la présence des huit diodes de sortie 143 du compteur permettant par ailleurs d'éviter les courts-circuits en cas où deux commutateurs seraient passants en même temps. Quant à la diode 143, elle permet d'éviter la destruction des circuits intégrés en cas d'inversion de sens lors du branchement de la pile. On limite la tension inverse à environ 0,7 volt.To adjust the time of the pulse durations, simply select one of the outputs 99, 121, 123, 125 of the counter 61 using switches 47 and, to adjust the time between two pulses, you can select one of the outputs 105, 127, 129, 131 of this same counter, also using switches 47. Note that the presence of OR logic gates 133, 135 and 137, whose outputs are respectively connected to terminal 87, at terminal 139 of the counter and at terminal 141 of the second flip-flop 59, allow the flip-flops and the counter to be reset (reset) in the event of power-up or at the end of the cycle, the presence of the eight output diodes 143 of the counter also enabling avoid short circuits if two switches are on at the same time. As for the diode 143, it avoids the destruction of the integrated circuits in the event of reversal of direction when the battery is connected. The reverse voltage is limited to about 0.7 volts.

Claims (11)

Dispositif (9) pour l'aspiration ou le refoulement d'un fluide, présentant un axe (200) et comprenant : - un corps extérieur (202) au moins en partie creux, - un moyen formant piston (206, 252) mobile dans ce corps suivant un mouvement axial alternatif, pour définir avec la partie (228) du corps qui le jouxte une chambre de pompage (208) de volume variable pour l'aspiration ou le refoulement du fluide, - des moyens (252) de blocage en rotation, par rapport audit corps du moyen formant piston, et - des moyens d'accouplement du moyen formant piston à un moteur (204), ces moyens d'accouplement comprenant : . une tête (236) présentant sur sa surface extérieure périphérique au moins un chemin de guidage (238) continu, fermé sur lui-même et au moins localement angulairement incliné par rapport à un plan perpendiculaire audit axe du dispositif ; cette tête étant associée au moteur pour être animée d'un mouvement de rotation autour de cet axe, et . au moins une pièce d'entraînement (240) liée au moyen formant piston et propre à se déplacer le long dudit chemin de guidage de la tête, en provoquant le mouvement axial alternatif du moyen formant piston. Device (9) for suction or delivery of a fluid, having an axis (200) and comprising: - an outer body (202) at least partially hollow, - A means forming a piston (206, 252) movable in this body according to an alternating axial movement, to define with the part (228) of the body which adjoins it a pumping chamber (208) of variable volume for suction or discharge fluid, - means (252) for locking in rotation, with respect to said body of the piston-forming means, and - means for coupling the piston-forming means to a motor (204), these coupling means comprising: . a head (236) having on its peripheral external surface at least one guide path (238) continuous, closed on itself and at least locally angularly inclined relative to a plane perpendicular to said axis of the device; this head being associated with the motor to be driven in a rotational movement around this axis, and . at least one drive part (240) linked to the piston means and capable of moving along said head guide path, causing the reciprocating axial movement of the piston means. Dispositif selon la revendication 1, caractérisé en ce que ledit chemin de guidage consiste en une saignée (238) creusée sur la surface externe longitudinale de ladite tête, ladite pièce d'entraînement étant disposée en partie dans la saignée.Device according to claim 1, characterized in that the said guide path consists of a groove (238) hollowed out on the longitudinal external surface of the said head, the said drive part being partly arranged in the groove. Dispositif selon la revendication 2, caractérisé en ce que ladite saignée présente une forme générale d'anneau essentiellement plan, oblique par rapport audit axe du dispositif et formant avec cet axe un angle aigu (α) supérieur à 70° environ.Device according to Claim 2, characterized in that the said groove has the general shape of an essentially planar ring, oblique to the said axis of the device and forming with this axis an acute angle (α) greater than approximately 70 °. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le moyen formant piston comprend une membrane étanche déformable (252).Device according to any one of claims 1 to 3, characterized in that the piston means comprises a deformable waterproof membrane (252). Dispositif selon la revendication 4, caractérisé en ce que ladite membrane (252) présente une forme générale de disque dans un état naturel non contraint.Device according to Claim 4, characterized in that the said membrane (252) has the general shape of a disc in an unconstrained natural state. Dispositif selon la revendication 4 ou la revendication 5, caractérisé en ce que la membrane présente une épaisseur comprise entre environ quelques dixièmes de millimètre et 2 millimètres.Device according to claim 4 or claim 5, characterized in that the membrane has a thickness of between approximately a few tenths of a millimeter and 2 millimeters. Dispositif selon l'une quelconque des revendications 4 à 6, caractérisé en ce que la membrane est maintenue périphériquement vis-à-vis du corps, formant ainsi lesdits moyens de blocage en rotation dudit moyen formant piston.Device according to any one of Claims 4 to 6, characterized in that the membrane is held peripherally with respect to the body, thus forming the said means for locking in rotation of the said means forming the piston. Appareil pour disperser un liquide, comprenant : - un corps-support (7, 17), - une cartouche-recharge (5), définissant un réservoir pour le liquide (3) à disperser et étant adaptée pour être liée de façon amovible au corps-support, - des moyens (15, 23, 37) de diffusion dudit liquide, portés par la cartouche et comprenant un conduit (39) de soufflage de gaz qui communique, d'un côté, avec un passage (13, 15) de sortie de la cartouche vers l'air libre et des moyens (41) d'amenée, sur le chemin du gaz soufflé, de faibles quantités de liquide, et - une pompe (9) pour l'aspiration ou le refoulement du gaz, disposée dans ledit corps-support et communiquant avec le conduit de soufflage du gaz, cette pompe présentant un axe (200) et comprenant : - un corps extérieur (202) au moins en partie creux, - un moyen formant piston (206, 252) mobile dans ce corps suivant un mouvement axial alternatif, pour faire varier le volume d'une chambre de pompage (208) du gaz, - des moyens (252) de blocage en rotation, par rapport audit corps extérieur (202), du moyen formant piston, et - des moyens d'accouplement du moyen formant piston à un moteur (204), ces moyens d'accouplement comprenant : . une tête (236) présentant sur sa surface extérieure périphérique au moins un chemin de guidage (238) continu, fermé sur lui-même et au moins localement angulairement incliné par rapport à un plan perpendiculaire audit axe du dispositif ; cette tête, étant associée au moteur pour être animée d'un mouvement de rotation autour de cet axe, et . au moins une pièce d'entraînement (240) liée au moyen formant piston et propre à se déplacer le long dudit chemin de guidage de la tête, en provoquant le mouvement axial alternatif du moyen formant piston. Apparatus for dispersing a liquid, comprising: - a support body (7, 17), - a refill cartridge (5), defining a reservoir for the liquid (3) to be dispersed and being adapted to be removably linked to the support body, - Means (15, 23, 37) for diffusing said liquid, carried by the cartridge and comprising a gas blowing duct (39) which communicates, on one side, with a passage (13, 15) for exit from the cartridge to the open air and means (41) for supplying, on the path of the blown gas, small quantities of liquid, and a pump (9) for the suction or delivery of the gas, disposed in said support body and communicating with the gas blowing duct, this pump having an axis (200) and comprising: - an outer body (202) at least partially hollow, a piston-forming means (206, 252) movable in this body in an alternating axial movement, to vary the volume of a gas pumping chamber (208), - means (252) for locking in rotation, with respect to said external body (202), of the means forming the piston, and - means for coupling the piston-forming means to a motor (204), these coupling means comprising: . a head (236) having on its peripheral external surface at least one guide path (238) continuous, closed on itself and at least locally angularly inclined relative to a plane perpendicular to said axis of the device; this head, being associated with the motor to be driven in a rotational movement around this axis, and . at least one drive part (240) linked to the piston means and suitable for moving along said head guide path, causing the reciprocating axial movement of the piston means. Appareil selon la revendication 8, caractérisé en ce que le passage de sortie (13, 15) de la cartouche (5), qui prolonge d'un côté le réservoir (33) s'intègre dans un canal (15₁, 15₂, 15₃) convergent/divergent ménagé dans le corps-support (17) de l'appareil, le conduit de soufflage du gaz (39) et les moyens d'amenée de liquide (41) s'interrompant, dans le réservoir (33), à un niveau où ledit passage de sortie (13) est convergent.Apparatus according to claim 8, characterized in that the outlet passage (13, 15) of the cartridge (5), which extends on one side the reservoir (33) is integrated into a channel (15₁, 15₂, 15₃) converging / diverging formed in the support body (17) of the apparatus, the gas blowing duct (39) and the liquid supply means (41) being interrupted, in the tank (33), at one level where said outlet passage (13) is convergent. Appareil selon la revendication 8 ou la revendication 9, caractérisé en ce qu'il présente un conduit (29) de gaz secondaire soufflé qui communique, d'un côté, avec ladite pompe (9) et chemine dans le corps-support (17) de l'appareil pour déboucher, autour du passage (15) de sortie à l'air libre de la cartouche (5).Apparatus according to claim 8 or claim 9, characterized in that it has a blown secondary gas conduit (29) which communicates, on one side, with said pump (9) and runs in the support body (17) of the apparatus for opening, around the passage (15) for the air outlet of the cartridge (5). Appareil selon l'une quelconque des révendications 8 à 10, caractérisé en ce qu'il intègre en outre une carte électronique programmable (45) pour commander le fonctionnement de ladite pompe (9), en déclenchant et en interrompant séquentiellement, pendant un intervalle de temps prédéterminé, la distribution de gaz vers lesdits moyens de diffusion (37).Apparatus according to any one of claims 8 to 10, characterized in that it further includes a programmable electronic card (45) for controlling the operation of said pump (9), by triggering and interrupting sequentially, during an interval of predetermined time, the distribution of gas to said diffusion means (37).
EP94401481A 1993-07-13 1994-06-29 Improved liquid suction and exhaust device and apparatus for dispersing liquid comprising such a device Expired - Lifetime EP0634223B1 (en)

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US08/271,665 US5518375A (en) 1993-07-13 1994-07-07 Device for the suction and delivery of a fluid, apparatus for dispersing a liquid comprising such a device

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FR9308628A FR2707529B1 (en) 1993-07-13 1993-07-13 Apparatus for dispersing a liquid by a gas flow.
FR9308628 1993-07-13

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EP0741038A2 (en) * 1995-04-27 1996-11-06 Owens-Illinois Closure Inc. Liquid containment and dispensing device
EP0830902A3 (en) * 1996-09-07 1998-10-28 Black & Decker Inc. Pump unit (paint system)
EP0938933A3 (en) * 1998-02-25 2000-08-09 Ing. Erich Pfeiffer Gmbh Control of discharge for a fluid dispenser
WO2020081216A1 (en) * 2018-10-16 2020-04-23 Kci Licensing, Inc. Rotationally actuated negative-pressure wound therapy device

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JP2002121880A (en) 2000-10-12 2002-04-26 Nichiha Corp External wall execution structure and starter metal fitting

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WO2020081216A1 (en) * 2018-10-16 2020-04-23 Kci Licensing, Inc. Rotationally actuated negative-pressure wound therapy device

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ES2114667T3 (en) 1998-06-01
ATE162431T1 (en) 1998-02-15
DE69408049D1 (en) 1998-02-26
FR2707529B1 (en) 1995-09-01
DE69408049T2 (en) 1998-08-13
FR2707529A1 (en) 1995-01-20
JP2575336B2 (en) 1997-01-22
EP0634223B1 (en) 1998-01-21
JPH07151054A (en) 1995-06-13

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